CN110890176A - Coaxial cable and method for connecting end portions thereof - Google Patents
Coaxial cable and method for connecting end portions thereof Download PDFInfo
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- CN110890176A CN110890176A CN201911344442.7A CN201911344442A CN110890176A CN 110890176 A CN110890176 A CN 110890176A CN 201911344442 A CN201911344442 A CN 201911344442A CN 110890176 A CN110890176 A CN 110890176A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 176
- 238000002788 crimping Methods 0.000 claims abstract description 51
- 238000009421 internal insulation Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 8
- 238000009413 insulation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/04—Concentric cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
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Abstract
The invention discloses a coaxial cable and an end part connecting method thereof, relates to the technical field of cable connection, and solves the problem that the reliability of the cable is influenced because an led-out cable conductor is broken at a branch point by electromagnetic force easily under the condition of super-strong pulse current flow in the conventional coaxial cable adopting an end part branch connection leading-out mode. The main technical scheme of the invention is as follows: the method comprises the following steps: the connecting end part comprises a low-voltage connecting end and a high-voltage connecting end, the low-voltage connecting end comprises an outer conductor which is partially exposed and stripped from the inner insulating layer, and the high-voltage connecting end is an inner conductor which is partially exposed; the outer conductor snap ring, the outer conductor snap ring includes the first fixed lantern ring and the first lantern ring that supports, wherein, fixed lantern ring cover is established the outside of low pressure link, just the low pressure link the outer conductor crimping is in the first fixed lantern ring with between the first lantern ring that supports, the low pressure link the outer conductor with first fixed lantern ring electric connection.
Description
Technical Field
The invention relates to the technical field of cable connection, in particular to a coaxial cable and an end connection method thereof.
Background
Coaxial cable refers to a cable having two concentric conductors, the conductors and shield sharing an axis. Most common coaxial cables consist of a copper conductor separated by an insulating material, outside of which is another layer of annular conductor and its insulation, and then the entire cable is surrounded by a sheath of polyvinyl chloride or teflon material. Generally, a coaxial cable is used for transmitting ultra-high power pulse energy under high voltage and high current conditions, and an electromagnetic field of the coaxial cable is mainly confined between an inner conductor and an outer conductor due to the outer conductor armored in a form of wrapping a central conductor, so that external electromagnetic interference is small, and the coaxial cable is mainly applied to the field of pulse power of some extreme physical researches.
At present, the commonly used lead-out mode of the coaxial cable is to strip off the outer conductor at the end of the coaxial cable, coat the insulating film and weld a lug at the end position of the copper wire, the mode forms a forked 'Y' -shaped structure at the end of the coaxial cable, the currents carried by the inner conductor and the outer conductor after the forking are equal in magnitude and opposite in direction, when the carried current is large, the two forked conductors receive obvious electromagnetic 'repulsion', so that the two conductors are mutually repulsive vibration during each discharge, the stress concentration point of the vibration is located at the forked position of the cable, and when the discharge times are more, the forked conductors of the cable are easily broken from the forked point, thereby affecting the reliability of the cable.
Disclosure of Invention
In view of this, embodiments of the present invention provide a coaxial cable and an end connection method thereof, and mainly aim to solve the problem that the current coaxial cable adopts an end-splitting connection leading-out manner, which easily causes the lead-out cable conductor to break from a splitting point, thereby affecting the reliability of the cable. In order to achieve the purpose, the invention mainly provides the following technical scheme:
in one aspect, an embodiment of the present invention provides a coaxial cable, where the coaxial cable includes: inner conductor, internal insulation layer, outer conductor and outer insulating sheath still include: the coaxial cable comprises a cable main body part and a connecting end part;
the connecting end part comprises a low-voltage connecting end and a high-voltage connecting end, the low-voltage connecting end comprises an outer conductor which is partially exposed and stripped from the inner insulating layer, and the high-voltage connecting end is an inner conductor which is partially exposed;
the outer conductor snap ring, the outer conductor snap ring includes the first fixed lantern ring and the first lantern ring that supports, wherein, fixed lantern ring cover is established the outside of low pressure link, just the low pressure link the outer conductor crimping is in the first fixed lantern ring with between the first lantern ring that supports, the low pressure link the outer conductor with first fixed lantern ring electric connection.
Optionally, the method further includes: the inner conductor clamping ring comprises a second supporting lantern ring and a second fixing lantern ring sleeved outside the second supporting lantern ring;
the second supporting lantern ring is sleeved outside the inner conductor of the high-voltage connecting end, and the inner conductor of the high-voltage connecting end is electrically connected with the second fixing lantern ring.
Optionally, the first fixing collar includes a first crimping portion and a first fixing portion;
the first crimping part is used for compressing the outer conductor of the low-voltage connecting end between the first fixing sleeve ring and the first supporting sleeve ring;
the first fixing part extends to the cable main body part for a preset distance and is clamped with the outer insulating sheath of the cable main body part;
the inner diameter of the first fixing part is matched with the outer diameter of the outer insulating sheath and is larger than the inner diameter of the first crimping part.
Optionally, the inner side wall of the first crimping part and the outer side wall of the first support collar are respectively provided with a tapered inclined surface, and the directions of the inclined surfaces of the first crimping part and the first support collar are opposite;
and a fastening nut ring is connected to the inner thread of the outer end of the first crimping part, so that the outer conductor of the low-voltage connecting end is compressed between the first fixing sleeve ring and the first supporting sleeve ring.
Optionally, an anti-drop nut is connected to the external thread of the first fixing portion, and is used for pressing the first fixing portion outside the outer insulating sheath.
Optionally, an annular protrusion is disposed on an inner side wall of the second fixing sleeve ring, and the annular protrusion contacts with the inner conductor of the high-voltage connecting end, so that the inner conductor of the high-voltage connecting end is electrically connected with the second fixing sleeve ring.
Optionally, the second fixing collar includes a second crimping portion and a second fixing portion, and the annular protrusion is disposed between the second crimping portion and the second fixing portion;
the second crimping part is used for compressing the inner conductor of the high-voltage connecting end into the second supporting lantern ring;
the second fixing part extends to a preset distance outside the inner insulating layer between the low-voltage connecting end and the high-voltage connecting end and is clamped with the inner insulating layer;
the inner diameter of the second fixing part is matched with the outer diameter of the inner insulating layer and is larger than the inner diameter of the second crimping part.
Optionally, the inner side wall of the second crimping portion and the outer side wall of the second support collar are respectively provided with a tapered inclined surface, and the directions of the inclined surfaces of the second crimping portion and the second support collar are opposite;
and a fastening nut ring is connected to the inner end of the second crimping part in a threaded manner, so that the inner conductor of the high-voltage connecting end is pressed in the second supporting sleeve ring.
In another aspect, an embodiment of the present invention provides a method for connecting an end of a coaxial cable, where the method includes: stripping an outer insulating layer of a connecting end part of the coaxial cable, and stripping an outer conductor of a low-voltage connecting end from an inner insulating layer to form the outer conductor which is exposed and separated from the inner insulating layer;
stripping the inner insulating layer of the high-voltage connecting end to form a bare inner conductor;
an outer conductor snap ring is installed at the low-voltage connecting end, so that the outer conductor of the low-voltage connecting end is in crimping between the first fixed lantern ring and the first supporting lantern ring, and the outer conductor of the low-voltage connecting end is electrically connected with the first fixed lantern ring.
Optionally, the method further includes: and an inner conductor snap ring is arranged at the high-voltage connecting end, so that the inner conductor of the high-voltage connecting end is crimped inside the second support sleeve ring and the second support sleeve ring, and the inner conductor of the high-voltage connecting end is electrically connected with the second support sleeve ring.
According to the coaxial cable and the end part connecting method thereof provided by the embodiment of the invention, the connecting end part of the coaxial cable is processed to form the low-voltage connecting end and the high-voltage connecting end which are spaced at a certain interval, the outer conductor of the low-voltage connecting end can be pressed between the first fixing lantern ring and the first supporting lantern ring by installing the outer conductor snap ring on the low-voltage connecting end, so that the outer conductor of the low-voltage connecting end can be led out through the first supporting lantern ring, the branching operation of the coaxial cable is avoided, the damage of electromagnetic force caused by the branching of the coaxial cable to a branching point can be effectively avoided, and the running reliability of the coaxial cable can be improved.
Drawings
Fig. 1 is a schematic cross-sectional view of a coaxial cable according to an embodiment of the present invention;
fig. 2 is a schematic perspective cross-sectional view of a coaxial cable according to an embodiment of the present invention;
fig. 3 is a schematic view of a first fixing collar structure of a coaxial cable according to an embodiment of the present invention;
fig. 4 is a schematic view of a first supporting collar structure of a coaxial cable according to an embodiment of the present invention;
fig. 5 is a schematic view of a second fixing collar structure of a coaxial cable according to an embodiment of the present invention;
fig. 6 is a schematic view of a second support collar structure of a coaxial cable according to an embodiment of the present invention;
fig. 7 is a schematic flow chart illustrating a method for connecting ends of coaxial cables according to an embodiment of the present invention;
fig. 8 is another schematic flow chart of a method for connecting ends of coaxial cables according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the coaxial cable and the method for connecting the end portion thereof according to the present invention, the detailed description, the structure, the features and the effects thereof will be made with reference to the accompanying drawings and the preferred embodiments.
Example one
As shown in fig. 1 to 6, an embodiment of the present invention provides a coaxial cable 1, where the coaxial cable 1 includes: inner conductor 101, interior insulating layer 102, outer conductor 103 and outer insulating sheath 104 still include:
the coaxial cable 1 includes a cable main body portion 110 and a connection end portion 120;
the connecting end part 120 comprises a low-voltage connecting end 1201 and a high-voltage connecting end 1202, the low-voltage connecting end 1201 comprises an outer conductor 103 which is partially exposed and stripped from the inner insulating layer 102, and the high-voltage connecting end 1202 is an inner conductor 101 which is partially exposed;
the outer conductor snap ring 2, the outer conductor snap ring 2 includes first fixed lantern ring 201 and first support lantern ring 202, wherein, fixed lantern ring cover is established the outside of low pressure link 1201, just low pressure link 1201 the outer conductor 103 crimping is in first fixed lantern ring 201 with between the first support lantern ring 202, low pressure link 1201 the outer conductor 103 with first fixed lantern ring 201 electric connection.
Specifically, the coaxial cable 1 includes an inner conductor 101 and an outer conductor 103 coaxially disposed, the inner conductor 101 and the outer conductor 103 are separated by an inner insulating layer 102, and an outer insulating sheath 104 is disposed at the outermost layer to cover the inner conductor. The coaxial cable 1 comprises a cable main body 110 and a connection end 120, the connection end 120 is the end position of the coaxial cable 1 to be led out, at present, the connection end 120 of the coaxial cable 1 is usually led out in a manner of separating an inner conductor 101 and an outer conductor 103 at the ends to form a bifurcated 'Y' -shaped structure, when the carried current is large, the two bifurcated leads receive obvious electromagnetic 'repulsive force', the concentrated stress concentration point of vibration generated by the two leads during each discharge is positioned at the bifurcation of the coaxial cable 1, so that the leads after the cable bifurcation are easy to break from the bifurcation point, in order to solve the problem that the led-out cable leads are easy to break from the bifurcation caused by the current lead-out of the ends, in the present embodiment, a connection end 120 leading-out manner different from the current bifurcation is adopted, firstly, the outermost outer insulating sheath 104 of the connection end 120 is peeled off, forming a low-voltage connecting end 1201 and a high-voltage connecting end 1202 by the connecting end 120, wherein the low-voltage connecting end 1201 is positioned at one end close to the cable main body 110, and peeling the outer conductor 103 which is arranged on the connecting end 120 and is spaced from the cable main body by a preset distance from the inner insulating layer 102 to form the high-voltage connecting end 1202; the low voltage connection end 1201 is located at the outermost end, that is, the end farthest from the cable main body 110, and the inner insulating layer 102 with a preset length at the outermost end is peeled off, so that the inner conductor 101 can be exposed to form the high voltage connection end 1202, and the distance between the low voltage connection end 1201 and the high voltage connection end 1202 can be set according to practical situations, and is not particularly limited herein.
When the connection end part 120 of the coaxial cable 1 is led out, the outer conductor snap ring 2 is installed at the high-voltage connection end 1202, the outer conductor snap ring 2 comprises a first fixing collar 201 and a first supporting collar 202, during installation, the first supporting collar 202 may be inserted into the high voltage connection end 1202 and sleeved between the inner insulating layer 102 and the outer conductor 103 of the low voltage connection end 1201, then, the first fixing lantern ring 201 penetrates from the high-voltage connecting end 1202 and is sleeved outside the outer conductor 103 of the low-voltage connecting end 1201 to realize fixing, the first fixing lantern ring 201 and the first supporting lantern ring 202 are matched to enable the outer conductor 103 of the low-voltage connecting end 1201 to be pressed between the first fixing lantern ring 201 and the first supporting lantern ring 202, the first fixing lantern ring 201 can be electrically connected with the outer conductor 103 of the low-voltage connecting end 1201, namely, the low-voltage connection end 1201 can be led out through the first fixing collar 201 to realize connection with the outside, and the exposed inner conductor 101 of the high-voltage connection end 1202 can be directly led out. The low-voltage connecting end 1201 and the high-voltage connecting end 1202 of the end part of the coaxial cable 1 can be reliably led out under the condition of no branching through the processing of the connecting end part 120 of the coaxial cable 1 and the arrangement of the outer conductor clamping ring 2, and the running reliability of the coaxial cable 1 is improved.
The embodiment of the invention provides a coaxial cable, wherein a low-voltage connecting end and a high-voltage connecting end which are spaced at a certain interval are formed by processing the connecting end of the coaxial cable, an outer conductor snap ring is arranged on the low-voltage connecting end, and the outer conductor of the low-voltage connecting end can be pressed between a first fixed lantern ring and a first supporting lantern ring, so that the outer conductor of the low-voltage connecting end can be led out through the first supporting lantern ring, the branching operation of the coaxial cable is avoided, the damage of electromagnetic force to a branching point caused by the branching of the coaxial cable can be effectively avoided, and the running reliability of the coaxial cable can be improved.
Further, referring to fig. 1 and fig. 3, in an implementation, the first fixing collar 201 includes a first press-fitting part 2011 and a first fixing part 2012; the first crimp 2011 is configured to crimp the outer conductor 103 of the low-voltage connection end 1201 between the first fixed collar 201 and the first support collar 202; the first fixing part 2012 extends to the cable main body 110 by a predetermined distance and is clamped with the outer insulating sheath 104 of the cable main body 110; the inner diameter of the first fixing portion 2012 is matched with the outer diameter of the outer insulating sheath 104 and is larger than the inner diameter of the first crimping portion 2011.
Specifically, in order to improve the reliability of fixing the outer conductor snap ring 2 and the coaxial cable 1 and the stability of the electrical connection between the first fixed collar 201 and the outer conductor 103 of the low-voltage connection end 1201, in the technical scheme adopted by the invention, the first fixed collar 201 comprises a first press-fit part 2011 and a first fixed part 2012, wherein the first press-fit part 2011 is used for enabling the outer conductor 103 of the low-voltage connection end 1201 to be tightly attached between the first fixed collar 201 and the first support collar 202 and form a stable electrical connection relationship with the first support collar 202, so as to ensure the effect of leading out the low-voltage connection end; the second fixing portion is used for realizing the reliable fixed relation of the outer conductor snap ring 2 and the coaxial cable 1, the low-voltage connecting end is close to the cable main body portion 110, the first fixing portion 2012 has a preset length and is sleeved outside the outer insulating sheath 104 of the cable main body portion 110 adjacent to the low-voltage connecting end, the inner diameter of the first fixing portion is matched with the outer diameter of the outer insulating sheath 104, and the first fixing portion is clamped with the outer insulating sheath 104, so that the stable fixed relation is realized. Since the outer insulating sheath 104 of the low-voltage connection end 1201 is removed and the first crimping part 2011 of the first fixing collar 201 needs to be tightly attached to the outer conductor 103 of the low-voltage connection end 1201, the inner diameter of the first fixing part 2012 is larger than that of the first crimping part 2011, and on the other hand, the outer insulating sheath 104 of the cable main body 110 can also play a role in limiting the first crimping part 2011, so that the fixing and positioning reliability is further improved.
Further, referring to fig. 3 and fig. 4, in an implementation, an inner side wall of the first press-connecting part 2011 and an outer side wall of the first support collar 202 are respectively configured to have a tapered slope, and the directions of the slopes of the two are opposite; a fastening nut ring 3 is screwed into the outer end of the first crimp 2011 so that the outer conductor 103 of the low-voltage connection end 1201 is compressed between the first fixing collar 201 and the first support collar 202.
Specifically, in order to improve the crimping effect of the first fixing collar 201 and the first support collar 202 on the outer conductor 103 of the low-voltage connection end 1201, in the technical scheme adopted by the invention, the inner side wall of the first crimping part 2011 and the outer side wall of the first support collar 202 are respectively set to be slopes with certain tapers, and the directions of the slopes of the first crimping part 2011 and the outer side wall of the first support collar 202 are opposite, and the tapers can be equal, so that after the setting, when the first support collar 202 gradually moves towards the direction close to the cable main body 110, the outer conductor 103 in the middle part can be crimped tightly through the matching of the tapers of the first crimping part 2011 and the first support collar 202; and through setting up fastening nut ring 3, can realize with further supplementary that first crimping portion 2011 and first support lantern ring 202 are inseparable to the outer conductor 103 crimping, and can play fixed and spacing effect to first support lantern ring 202.
Further, referring to fig. 1, in an implementation, an anti-drop nut 4 is screwed to an outer portion of the first fixing portion 2012, and is configured to press the first fixing portion 2012 against an outer portion of the outer insulating sheath 104.
Specifically, in order to further prevent the outer conductor snap ring 2 from falling off the coaxial cable 1, in the technical scheme adopted by the present invention, the anti-drop nut 4 is connected to the external thread of the first fixing portion 2012, and further to press the first fixing portion 2012 against the outside of the outer insulating sheath 104, corresponding threads may be provided at one ends of the anti-drop nut 4 and the first fixing portion 2012 close to the low-voltage connecting end 1201 to realize threaded connection, and at one ends of the anti-drop nut 4 and the first fixing portion 2012 far from the low-voltage connecting end 1201, the inner side wall of the anti-drop nut 4 and the outer side wall of the first fixing portion 2012 may be provided with tapered inclined surfaces, and the lower surfaces of the two are opposite, so that in the process of threaded connection between the anti-drop nut 4 and the first fixing portion 2012, the first predetermined portion may be pressed against the cable main body portion 110 to achieve the anti.
Further, referring to fig. 1, fig. 2, fig. 5 and fig. 6, in an implementation, the coaxial cable 1 according to the embodiment of the present invention further includes: the inner conductor clamping ring 5 comprises a second supporting sleeve ring 502 and a second fixing sleeve ring 501 sleeved outside the second supporting sleeve ring 502; the second supporting sleeve ring 502 is sleeved outside the inner conductor 101 of the high-voltage connecting end, and the inner conductor 101 of the high-voltage connecting end is electrically connected with the second fixing sleeve ring 501.
Specifically, in order to improve the stability and reliability of the lead-out of the high-voltage connection end 1202 of the coaxial cable 1, the invention adopts the technical scheme that the coaxial cable is further provided with an inner conductor snap ring 5 installed on the high-voltage connection end 1202, the inner conductor snap ring 5 comprises a second support collar 502 and a second fixing collar 501, when the coaxial cable is installed, the second support collar 502 is firstly sleeved outside the inner conductor 101 of the high-voltage connection end 1202, then the second fixing collar 501 is sleeved outside the second support collar 502 and fixed, so that the inner conductor 101 of the high-voltage connection end 1202 is pressed inside the second support collar 502 and the second fixing collar 501, in order to realize the lead-out of the inner conductor 101 of the high-voltage connection end 1202, the electrical connection between the inner conductor 101 of the high-voltage connection end 1202 and the second fixing collar 501 is ensured, so that part of the second fixing collar 501 can be contacted with the inner conductor 101 of the high-, various specific arrangements may be adopted, and are not particularly limited herein. The high-voltage connecting end 1202 of the coaxial cable 1 is led out through the inner conductor snap ring 5, so that the damage of electromagnetic force to the high-voltage connecting end 1202 can be reduced, the service life of the high-voltage connecting end 1202 is prolonged, and the stable and reliable operation of the coaxial cable 1 is ensured.
Further, referring to fig. 1, in a specific implementation, an annular protrusion may be disposed on an inner sidewall of the second fixed collar 501, and the annular protrusion contacts with the inner conductor 101 of the high-voltage connection end 1202, so that the inner conductor 101 of the high-voltage connection end 1202 is electrically connected to the second fixed collar 501.
Specifically, in order to improve the electrical connection between the inner conductor 101 of the high-voltage connection end 1202 of the coaxial cable 1 and the inner conductor snap ring 5, so as to lead out the high-voltage connection end 1202 through the inner conductor snap ring 5, in the technical scheme adopted by the invention, an annular convex part can be arranged on the inner side wall of the second fixing collar 501, specifically the annular convex part can be arranged at the inner end of the second fixing collar 501, namely the end close to the low-voltage connection end 1201, the inner diameter of the annular convex part is matched with the diameter of the inner conductor 101 through the arrangement of the annular convex part, and the annular convex part can be contacted with the inner conductor 101 after installation, so as to realize the electrical connection between the inner conductor 101 of the high-voltage connection end 1202 and the second fixing. According to the above, after the annular protrusion is provided in the second fixing collar 501, when the inner conductor snap ring 5 is installed, the second fixing collar 501 may be installed first, and then the second supporting collar 502 may be installed between the second fixing collar 501 and the inner conductor 101, and the inner end of the second supporting collar 502 is in contact with and closely attached to the annular protrusion.
Further, referring to fig. 5 and 6, in an implementation, the second fixing collar 501 includes a second press-connection part 5011 and a second fixing part 5012, and the annular protrusion is disposed between the second press-connection part 5011 and the second fixing part 5012; the second crimp 5011 is used to crimp the inner conductor 101 of the high voltage connection end 1202 inside the second support collar 502; the second fixing portion 5012 extends to a preset distance outside the inner insulating layer 102 between the low-voltage connecting end 1201 and the high-voltage connecting end 1202, and is clamped with the inner insulating layer 102; the inner diameter of the second fixing portion 5012 is matched with the outer diameter of the inner insulating layer 102 and is larger than the inner diameter of the second clamping portion 5011.
Specifically, in order to improve the reliability of fixing the inner conductor snap ring 5 to the coaxial cable 1 and the stability of the electrical connection between the second fixing collar 501 and the inner conductor 101 of the high-voltage connection end 1202, in the technical scheme adopted by the invention, the second fixing collar 501 comprises a second press-connection part 5011 and a second fixing part 5012, wherein the second press-connection part 5011 is used for pressing the inner conductor 101 of the high-voltage connection end 1202 inside the second support collar 502, and the annular protruding part is arranged between the second press-connection part 5011 and the second fixing part 5012 so as to ensure the effect of leading out the high-voltage connection end 1202; the second fixing portion 5012 is used for realizing a reliable fixing relationship between the inner conductor snap ring 5 and the coaxial cable 1, the inner conductor 101 and the inner insulating layer 102 are arranged between the inner end of the high-voltage connecting end 1202 and the low-voltage connecting end 1201 with a certain distance, and the second fixing portion 5012 extends to the outside of the inner insulating layer 102 for a preset distance and is clamped with the inner insulating layer 102, so that a stable fixing relationship is realized. Since the inner insulating layer 102 of the high-voltage connection end 1202 is removed and the second crimping portion 5011 of the second fixing collar 501 needs to be tightly attached to the inner conductor 101 of the high-voltage connection end 1202, the inner diameter of the second fixing portion 5012 is larger than that of the second crimping portion 5011, and on the other hand, the inner insulating layer 102 between the inner end of the high-voltage connection end 1202 and the low-voltage connection end 1201 can also play a role in limiting the second crimping portion 5011, and further improve the reliability of fixing and positioning.
Further, referring to fig. 5 and fig. 6, in an implementation, an inner side wall of the second press-contact part 5011 and an outer side wall of the second support collar 502 are respectively configured to have a tapered slope, and the directions of the slopes of the two are opposite; a fastening nut ring 3 is screwed into the outer end of the second crimp portion 5011 to press the inner conductor 101 of the high-voltage connection end 1202 against the inside of the second support collar 502.
Specifically, in order to improve the crimping effect of the second fixed collar 501 and the second support collar 502 on the inner conductor 101 of the low-voltage connection end 1201, in the technical scheme adopted by the invention, the inner side wall of the second crimping part 5011 and the outer side wall of the second support collar 502 are respectively provided with slopes with certain tapers, and the directions of the slopes of the two are opposite, and the tapers can be equal, so that after the arrangement, when the second support collar 502 gradually moves towards the inner end direction of the high-voltage connection end 1202, the outer conductor 103 in the middle can be tightly crimped through the matching of the tapers of the second crimping part 5011 and the second support collar 502; and through setting up fastening nut ring 3, can realize with further supplementary that second crimping portion 5011 and second support lantern ring 502 are inseparable to the crimping of inner conductor 101, and can play fixed and spacing effect to first support lantern ring 202.
Example two
As shown in fig. 7 and 8, an embodiment of the present invention provides an end connection method of a coaxial cable 1, where the end connection method of the coaxial cable 1 includes:
s1: stripping the outer insulation of the connection end 120 of the coaxial cable 1 and the outer conductor 103 of the low voltage connection end 1201 from the inner insulation 102 to form said outer conductor 103 exposed and separated from said inner insulation 102;
s2: stripping the inner insulating layer 102 of the high voltage connection terminal 1202 to form a bare inner conductor 101;
s3: an outer conductor snap ring is mounted on the low-voltage connection end 1201, so that the outer conductor 103 of the low-voltage connection end 1201 is crimped between the first fixing collar 201 and the first support collar 202, and the outer conductor 103 of the low-voltage connection end 1201 is electrically connected with the first fixing collar 201.
Specifically, in this embodiment, a connection end 120 leading-out manner different from the current bifurcated connection end 120 is adopted, first, the outermost outer insulating sheath 104 of the connection end 120 is stripped and removed, and the connection end 120 forms a low-voltage connection end 1201 and a high-voltage connection end 1202, where the low-voltage connection end 1201 is located at one end close to the cable main body 110, and the outer conductor 103 on the connection end 120, which is spaced from the cable main body by a preset distance, is stripped from the inner insulating layer 102 to form the high-voltage connection end 1202; the low voltage connection end 1201 is located at the outermost end, i.e. the end farthest from the cable main body 110, and the inner insulation layer 102 with a predetermined length at the outermost end is peeled off to expose the inner conductor 101, so as to form the high voltage connection end 1202. When the connection end part 120 of the coaxial cable 1 is led out, the outer conductor snap ring 2 is installed at the high-voltage connection end 1202, the outer conductor snap ring 2 comprises a first fixing lantern ring 201 and a first supporting lantern ring 202, the first fixing lantern ring 201 and the first supporting lantern ring 202 are matched to enable the outer conductor 103 of the low-voltage connection end 1201 to be in crimping connection between the first fixing lantern ring 201 and the first supporting lantern ring 202, the first fixing lantern ring 201 can be electrically connected with the outer conductor 103 of the low-voltage connection end 1201, namely the low-voltage connection end 1201 can be led out through the first fixing lantern ring 201 to enable connection with the outside, and the exposed inner conductor 101 of the high-voltage connection end. The low-voltage connecting end 1201 and the high-voltage connecting end 1202 of the end part of the coaxial cable 1 can be reliably led out under the condition of no branching through the processing of the connecting end part 120 of the coaxial cable 1 and the arrangement of the outer conductor clamping ring 2, and the running reliability of the coaxial cable 1 is improved.
The embodiment of the invention provides a method for connecting the end parts of a coaxial cable, which comprises the steps of processing the connecting end part of the coaxial cable to form a low-voltage connecting end and a high-voltage connecting end which are spaced at a certain interval, installing an outer conductor clamping ring on the low-voltage connecting end, and pressing the outer conductor of the low-voltage connecting end between a first fixed lantern ring and a first supporting lantern ring, so that the outer conductor of the low-voltage connecting end can be led out through the first supporting lantern ring, the operation of branching the coaxial cable is avoided, the damage of electromagnetic force caused by the branching of the coaxial cable to a branching point can be effectively avoided, and the operation reliability of the coaxial cable can be improved.
Further, referring to fig. 8, in an implementation, the method further includes:
s4: an inner conductor snap ring 5 is installed on the high voltage connection end 1202, so that the inner conductor 101 of the high voltage connection end 1202 is crimped inside the second support collar 502 and the second support collar 502, and the inner conductor 101 of the high voltage connection end 1202 is electrically connected with the second support collar 502.
Specifically, in order to improve the stability and reliability of the lead-out of the high-voltage connection end 1202 of the coaxial cable 1, the invention adopts the technical scheme that the coaxial cable is further provided with an inner conductor snap ring 5 installed at the high-voltage connection end 1202, the inner conductor snap ring 5 comprises a second support collar 502 and a second fixing collar 501, when the coaxial cable is installed, the second support collar 502 is firstly sleeved outside the inner conductor 101 of the high-voltage connection end 1202, then the second fixing collar 501 is sleeved outside the second support collar 502 and fixed, so that the inner conductor 101 of the high-voltage connection end is pressed inside the second support collar 502 and the second fixing collar 501, in order to realize the lead-out of the inner conductor 101 of the high-voltage connection end 1202, the electrical connection between the inner conductor 101 of the high-voltage connection end 1202 and the second fixing collar 501 is ensured, so that part of the second fixing collar 501 can be contacted with the inner conductor 101 of the high-, various specific arrangements may be adopted, and are not particularly limited herein. The high-voltage connecting end 1202 of the coaxial cable 1 is led out through the inner conductor snap ring 5, so that the damage of electromagnetic force to the high-voltage connecting end 1202 can be reduced, the service life of the high-voltage connecting end 1202 is prolonged, and the stable and reliable operation of the coaxial cable 1 is ensured.
It should be noted that in the description of the present specification, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A coaxial cable, the coaxial cable comprising: inner conductor, internal insulation layer, outer conductor and outer insulating sheath, its characterized in that still includes:
the coaxial cable comprises a cable main body part and a connecting end part;
the connecting end part comprises a low-voltage connecting end and a high-voltage connecting end, the low-voltage connecting end comprises an outer conductor which is partially exposed and stripped from the inner insulating layer, and the high-voltage connecting end is an inner conductor which is partially exposed;
the outer conductor snap ring, the outer conductor snap ring includes the first fixed lantern ring and the first lantern ring that supports, wherein, fixed lantern ring cover is established the outside of low pressure link, just the low pressure link the outer conductor crimping is in the first fixed lantern ring with between the first lantern ring that supports, the low pressure link the outer conductor with first fixed lantern ring electric connection.
2. The coaxial cable of claim 1, further comprising:
the inner conductor clamping ring comprises a second supporting lantern ring and a second fixing lantern ring sleeved outside the second supporting lantern ring;
the second supporting lantern ring is sleeved outside the inner conductor of the high-voltage connecting end, and the inner conductor of the high-voltage connecting end is electrically connected with the second fixing lantern ring.
3. The coaxial cable of claim 1,
the first fixing collar comprises a first crimping part and a first fixing part;
the first crimping part is used for compressing the outer conductor of the low-voltage connecting end between the first fixing sleeve ring and the first supporting sleeve ring;
the first fixing part extends to the cable main body part for a preset distance and is clamped with the outer insulating sheath of the cable main body part;
the inner diameter of the first fixing part is matched with the outer diameter of the outer insulating sheath and is larger than the inner diameter of the first crimping part.
4. The coaxial cable of claim 3,
the inner side wall of the first crimping part and the outer side wall of the first support sleeve ring are respectively provided with a tapered inclined surface, and the directions of the inclined surfaces of the first crimping part and the first support sleeve ring are opposite;
and a fastening nut ring is connected to the inner thread of the outer end of the first crimping part, so that the outer conductor of the low-voltage connecting end is compressed between the first fixing sleeve ring and the first supporting sleeve ring.
5. The coaxial cable of claim 4,
the external thread of the first fixing part is connected with an anti-drop nut which is used for pressing the first fixing part outside the external insulating sheath.
6. The coaxial cable of claim 2,
the inner side wall of the second fixed lantern ring is provided with an annular bulge, and the annular bulge is in contact with the inner conductor of the high-voltage connecting end, so that the inner conductor of the high-voltage connecting end is electrically connected with the second fixed lantern ring.
7. The coaxial cable of claim 6,
the second fixing collar comprises a second crimping part and a second fixing part, and the annular bulge part is arranged between the second crimping part and the second fixing part;
the second crimping part is used for compressing the inner conductor of the high-voltage connecting end into the second supporting lantern ring;
the second fixing part extends to a preset distance outside the inner insulating layer between the low-voltage connecting end and the high-voltage connecting end and is clamped with the inner insulating layer;
the inner diameter of the second fixing part is matched with the outer diameter of the inner insulating layer and is larger than the inner diameter of the second crimping part.
8. The coaxial cable of claim 7,
the inner side wall of the second crimping part and the outer side wall of the second support sleeve ring are respectively provided with a tapered inclined surface, and the directions of the inclined surfaces of the second crimping part and the second support sleeve ring are opposite;
and a fastening nut ring is connected to the inner end of the second crimping part in a threaded manner, so that the inner conductor of the high-voltage connecting end is pressed in the second supporting sleeve ring.
9. A method of connecting ends of coaxial cables, comprising:
stripping an outer insulating layer of a connecting end part of the coaxial cable, and stripping an outer conductor of a low-voltage connecting end from an inner insulating layer to form the outer conductor which is exposed and separated from the inner insulating layer;
stripping the inner insulating layer of the high-voltage connecting end to form a bare inner conductor;
an outer conductor snap ring is installed at the low-voltage connecting end, so that the outer conductor of the low-voltage connecting end is in crimping between the first fixed lantern ring and the first supporting lantern ring, and the outer conductor of the low-voltage connecting end is electrically connected with the first fixed lantern ring.
10. The method of claim 9, further comprising:
and an inner conductor snap ring is arranged at the high-voltage connecting end, so that the inner conductor of the high-voltage connecting end is crimped inside the second support sleeve ring and the second support sleeve ring, and the inner conductor of the high-voltage connecting end is electrically connected with the second support sleeve ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911344442.7A CN110890176A (en) | 2019-12-24 | 2019-12-24 | Coaxial cable and method for connecting end portions thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911344442.7A CN110890176A (en) | 2019-12-24 | 2019-12-24 | Coaxial cable and method for connecting end portions thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284720A (en) * | 2021-12-09 | 2022-04-05 | 中国电子科技集团公司第二十九研究所 | Feed structure of double coaxial cables |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070240893A1 (en) * | 2006-04-10 | 2007-10-18 | Bremnes Jarle J | Power cable for direct electric heating system |
| CN210778017U (en) * | 2019-12-24 | 2020-06-16 | 中信科佳信(北京)电气技术研究院有限公司 | Coaxial cable |
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- 2019-12-24 CN CN201911344442.7A patent/CN110890176A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070240893A1 (en) * | 2006-04-10 | 2007-10-18 | Bremnes Jarle J | Power cable for direct electric heating system |
| CN210778017U (en) * | 2019-12-24 | 2020-06-16 | 中信科佳信(北京)电气技术研究院有限公司 | Coaxial cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114284720A (en) * | 2021-12-09 | 2022-04-05 | 中国电子科技集团公司第二十九研究所 | Feed structure of double coaxial cables |
| CN114284720B (en) * | 2021-12-09 | 2023-04-25 | 中国电子科技集团公司第二十九研究所 | Feed structure of double coaxial cables |
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