CN107588676B - Limiting device of heat exchange tube and heat exchange device - Google Patents
Limiting device of heat exchange tube and heat exchange device Download PDFInfo
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- CN107588676B CN107588676B CN201610524132.3A CN201610524132A CN107588676B CN 107588676 B CN107588676 B CN 107588676B CN 201610524132 A CN201610524132 A CN 201610524132A CN 107588676 B CN107588676 B CN 107588676B
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Abstract
The invention discloses a limiting device of a heat exchange tube, which comprises: the pipe clamp mechanism is used for installing a plurality of heat exchange pipes; the rack is used for supporting and fixing the pipe clamp mechanism, and the rack is detachably connected with the pipe clamp mechanism; a limiting mechanism for limiting a jitter amplitude of the tube clamp mechanism; the limiting mechanism is arranged on the frame, and the pipe clamp mechanism is positioned in the limiting mechanism. According to the invention, the pipe clamping mechanism is used for fixing the heat exchange pipe, the rack is used for fixing the pipe clamping mechanism and the limiting mechanism respectively, and the limiting mechanism is used for limiting the pipe clamping mechanism. When the heat exchange tube shaking device is used, the heat exchange medium continuously impacts the heat exchange tube, so that the heat exchange tube shakes, and the phenomena of staggered and scattered heat exchange tubes and the like can not occur.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a limiting device of a heat exchange tube and a heat exchange device.
Background
The fluorine plastic pipe has the advantages of smooth pipe wall, moderate flexibility, stable chemical property, strong corrosion resistance, difficult scaling due to vibration during use, and the like; are often used in fluoroplastic heat exchangers. The fluoroplastic heat exchanger is a novel corrosion-resistant heat exchange device, and the heat exchange medium of the fluoroplastic heat exchanger has the characteristics of high temperature, high pressure, high flow speed, strong corrosiveness and the like. In addition, the fluoroplastic heat exchanger has the advantages of small volume, compact structure, high heat transfer efficiency and the like. Therefore, the fluoroplastic heat exchanger is widely applied to the fields of aviation, aerospace, chemical industry, medicine, electric power and the like.
At present, the length of the heat exchange tube in the fluoroplastic heat exchanger is longer; the fixing device in the fluoroplastic heat exchanger only fixes the inlet and the outlet of the heat exchange tube. Once the high-temperature high-pressure heat exchange medium continuously impacts the heat exchange tube, the heat exchange tube can shake up and down or shake in other directions, so that the heat exchange tube is staggered and scattered and the like.
Disclosure of Invention
The limiting device for the heat exchange tube can solve the problems of staggered and scattered heat exchange tubes and the like caused by shaking when the heat exchange medium continuously impacts the heat exchange tube.
The technical scheme provided by the invention is as follows:
the invention provides a limiting device of a heat exchange tube, which comprises: the pipe clamp mechanism is used for installing a plurality of heat exchange pipes; the rack is used for supporting and fixing the pipe clamp mechanism, and the rack is detachably connected with the pipe clamp mechanism; a limiting mechanism for limiting a jitter amplitude of the tube clamp mechanism; the limiting mechanism is arranged on the frame, and the pipe clamp mechanism is positioned in the limiting mechanism.
Further, the limiting mechanism comprises a positioning strip and a limiting strip, and a plurality of positioning grooves are formed in the positioning strip along the length direction; the limiting strips are provided with a plurality of limiting grooves along the length direction; the limiting strip is detachably connected to the positioning strip, and the opening of the limiting groove is aligned with the opening of the positioning groove to form a limiting hole.
Further, the limiting mechanism further comprises a clamping pin, and the clamping pin is inserted into the positioning strip through the limiting strip; the limiting strip is used for fixing the limiting strip on the positioning strip.
Further, the limit strip is bent to form the limit groove protruding outwards, the non-bent part of the limit strip forms the mounting part of the clamping pin, and the limit groove is arranged at intervals with the clamping pin.
Further, this stop device still includes: the outer side wall of the positioning ring is fixedly connected with at least one connecting part, the positioning ring is sleeved on the frame, and the connecting part is flexibly hinged to the pipe clamp mechanism.
Further, a waist-shaped hole is formed in the connecting portion, the waist-shaped hole is used for adjusting the installation distance between the pipe clamp mechanism and the frame, and the pipe clamp mechanism moves in the waist-shaped hole.
Further, the tube gripping device comprises at least two tube gripping units arranged in parallel, wherein the tube gripping units comprise a plurality of tube gripping strips arranged in parallel; be provided with a plurality of pipe clamp on the pipe clamp strip, be provided with the connecting block between two adjacent pipe clamps, the face of connecting block is on a parallel with the central line of pipe clamp.
Further, the ends of the pipe clamping strips are respectively provided with a mounting groove, and the groove walls of the mounting grooves are provided with hinge holes.
Further, the frame comprises a plurality of frame cross beams which are arranged in parallel and a plurality of auxiliary cross beams which are arranged in parallel; and at least one auxiliary cross beam is arranged between every two frame cross beams, the limiting mechanism is arranged on the auxiliary cross beams, and the pipe clamp mechanism is connected with the frame cross beams.
The invention also provides a heat exchange device comprising the limiting device, which further comprises: and the plurality of heat exchange pipes are arranged on the pipe clamping mechanism.
Compared with the prior art, the invention has the following advantages:
1. the invention provides a limiting device for a heat exchange tube, wherein a tube clamping mechanism is used for fixing the heat exchange tube, a frame is used for fixing the tube clamping mechanism and the limiting mechanism respectively, the limiting mechanism is used for limiting the tube clamping mechanism, and even if continuous impact is generated during use, the heat exchange tube shakes, and the phenomenon that the heat exchange tube is staggered, scattered and the like can not occur. In addition, the limiting device has the advantages of low cost, convenient use, safety, reliability, convenient installation and maintenance and the like.
2. The limiting mechanism comprises the locating strip and the limiting strip, and the locating strip is provided with a plurality of locating grooves, so that the pipe clamp mechanism can be rapidly clamped in batches; the limiting grooves are formed in the limiting strips, limiting holes are formed in the limiting grooves and the positioning grooves, and the limiting grooves can be prevented from being moved out of the heat exchange tubes when the heat exchange tubes shake. The limiting mechanism further comprises a clamping pin, wherein the clamping pin and the limiting groove are arranged in a crossing mode, and each limiting hole can be effectively fixed.
3. The pipe clamping mechanism comprises a pipe clamping strip, wherein a plurality of pipe clamps are arranged on the pipe clamping strip, and a plurality of heat exchange pipes can be installed; the plurality of tube clamping strips which are arranged in parallel form a tube clamping unit, and at least two tube clamping units which are arranged in parallel form a tube clamping mechanism, so that the heat exchange tubes are arranged in a honeycomb shape, and the heat exchange efficiency is improved. In addition, be provided with the connecting block between the pipe clamp, its connecting block is convenient for block into spacing hole to play well fixed action to the pipe clamp strip.
4. The connecting part is fixedly connected to the outer side wall of the positioning ring, and the waist-shaped hole is formed in the connecting part, so that the pipe clamp mechanism and the frame can be flexibly hinged, and the installation distance between the pipe clamp mechanism and the frame can be adjusted; when the heat exchange medium continuously impacts the heat exchange tube, and the heat exchange tube and the tube clamping mechanism shake together, the hinge pin can move in the waist-shaped hole, so that relative friction between the heat exchange tube and the tube clamping mechanism is avoided, and abrasion or grinding of the heat exchange tube is avoided. If the pipe clamping strip is rigidly connected with the frame, the heat exchange pipe can be broken by grinding and leakage.
5. The machine frame comprises a machine frame beam and an auxiliary beam, wherein the machine frame beam provides an installation platform for the pipe clamp mechanism, pipe clamp strips of the pipe clamp mechanism are flexibly hinged with the machine frame beam through positioning rings, and the auxiliary beam provides an installation platform for the limiting mechanism.
6. In the heat exchange device, the pipe clamp mechanism is used for fixing the heat exchange pipe, the rack is used for fixing the pipe clamp mechanism and the limiting mechanism respectively, the limiting mechanism is used for limiting the pipe clamp mechanism, and even if continuous impact is generated during use, the heat exchange pipe shakes, and the phenomenon that the heat exchange pipe is staggered, scattered and the like can not occur; thereby ensuring that the heat exchange device works safely and reliably.
Drawings
The above features, technical features, advantages and implementation modes of a heat exchange tube limit device and a heat exchange device will be further described in the following description of preferred embodiments with reference to the accompanying drawings in a clearly understood manner.
FIG. 1 is a schematic view of a portion of a heat exchange device according to the present invention;
FIG. 2 is a schematic view of a portion of the structure of the tube gripping device and one-sided retaining ring of the present invention;
fig. 3 is a schematic view of a part of the structure of the limiting mechanism in the present invention.
Reference numerals illustrate:
10-pipe clamping mechanism 11-pipe clamping strip 111-pipe clamp
112-connecting block 113-mounting groove
20-frame 21-frame beam 22-auxiliary beam
30-limiting mechanism 31-positioning strip 311-positioning groove
32-stop bar 321-stop slot 33-clamping pin
40-unilateral positioning ring 41-bilateral positioning ring 42-connecting part
421-waist-shaped hole 43-hinge pin 50-heat exchange tube
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
As shown in fig. 1, 2 and 3, according to one embodiment of the present invention, a limiting device for a heat exchange tube includes: a tube clamp mechanism 10 for mounting a plurality of heat exchange tubes 50; a frame 20 for supporting and fixing the pipe clamping mechanism 10, wherein the frame 20 is detachably connected with the pipe clamping mechanism 10; a limiting mechanism 30 for limiting the magnitude of the position change during dithering of the tube clamp mechanism 10; the limiting mechanism 30 is disposed on the housing 20, and the pipe clamp mechanism 10 is located within the limiting mechanism 30.
In this embodiment, the pipe clamping mechanism 10 comprises at least two pipe clamping units arranged in parallel, and the pipe clamping units comprise a plurality of pipe clamping strips 11 arranged in parallel; the pipe clamp strip 11 is provided with a plurality of hollow pipe clamps 111, a connecting block 112 is arranged between two adjacent pipe clamps 111, and the plate surface of the connecting block 112 is parallel to the center line of the pipe clamps 111. The two end parts of the pipe clamp strip 11 are respectively provided with a mounting groove 113, the groove walls of the mounting grooves 113 are provided with hinge holes, and the notch of the mounting groove 113 is perpendicular to the central line of the pipe clamp 111.
In the present embodiment, the frame 20 includes a plurality of frame beams 21 arranged in parallel and a plurality of auxiliary beams 22 arranged in parallel; at least one auxiliary beam 22 is arranged between every two frame beams 21, and the length direction of the frame beams 21 is parallel to the length direction of the auxiliary beam 22; the limiting mechanism 30 is arranged on the auxiliary beam 22, and the pipe clamp mechanism 10 is connected with the frame beam 21 through a positioning ring.
In the present embodiment, the limiting mechanism 30 includes a positioning strip 31 and a limiting strip 32, where the positioning strip 31 is provided with a plurality of positioning slots 311 along the length direction, so that the connecting blocks 112 on the pipe clamping strip 11 can be fast clamped into the positioning slots 311; the limit strip 32 is provided with a plurality of limit grooves 321 along the length direction; the limiting strip 32 is detachably connected to the positioning strip 31, and the opening of the limiting groove 321 is aligned with the opening of the positioning groove 311 to form a limiting hole, so as to limit the pipe clamping strip 11. The positioning strip 31 and the auxiliary cross beam 22 can be fastened by flexible plastic ropes.
The limiting mechanism 30 further comprises a clamping pin 33, and the clamping pin 33 is inserted into the positioning strip 31 through the limiting strip 32; for fixing the limit bar 32 to the positioning bar 31. The limiting strip 32 is bent to form a limiting groove 321 protruding outwards, an unbent part of the limiting strip 32 forms an installation part of the clamping pin 33, and the limiting groove 321 and the clamping pin 33 are arranged at intervals; thereby securely limiting the pipe clip 11.
With respect to the improvement of the above embodiment, in this embodiment, the limiting device of the heat exchange tube further includes: the device comprises a single-side positioning ring 40 and double-side positioning rings 41, wherein a connecting part 42 is fixedly connected to the outer side wall of the single-side positioning ring 40, and two connecting parts 42 are fixedly connected to the outer side wall of the double-side positioning ring 41; the unilateral locating ring 40 is sleeved on the frame beams 21 positioned on two sides, the bilateral locating ring 41 is sleeved on the frame beam 21 positioned in the middle, the connecting part 42 stretches into the mounting groove 113 at the end part of the pipe clamp strip 11, and the connecting part 42 is detachably connected with the end part of the pipe clamp strip 11 through the hinge pin 43. The connecting portion 42 is provided with a waist-shaped hole 421, and the hinge pin 43 passes through the hinge hole and the waist-shaped hole 421 on the wall of one side of the mounting groove 113 and extends to the hinge hole on the wall of the other side of the mounting groove 113; the hinge pin 43 can slide properly in the waist-shaped hole 421 and can be used to adjust the mounting distance of the pipe clamping mechanism 10 to the frame 20. An opening is formed at one end of the hinge pin 43, so that the hinge pin can be conveniently and rapidly clamped into the hinge hole. The pipe clamping strip 11, the clamping pin 33, the hinge pin 43, the positioning ring and other parts are all made of high-quality corrosion-resistant fluoroplastic.
According to another embodiment of the present invention, a heat exchange device including the limiting device in the above embodiment further includes: a plurality of heat exchange tubes 50, wherein the plurality of heat exchange tubes 50 are mounted on the pipe clamping mechanism 10, and the heat exchange tubes 50 and the pipe clamps 111 cannot be loose.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. A spacing device for heat exchange tubes, comprising:
the pipe clamp mechanism is used for installing a plurality of heat exchange pipes;
the rack is used for supporting and fixing the pipe clamp mechanism, and the rack is detachably connected with the pipe clamp mechanism;
a limiting mechanism for limiting a jitter amplitude of the tube clamp mechanism; the limiting mechanism is arranged on the frame, and the pipe clamping mechanism is positioned in the limiting mechanism;
the limiting mechanism comprises a positioning strip and a limiting strip, and the positioning strip is provided with a plurality of positioning grooves along the length direction; the limiting strips are provided with a plurality of limiting grooves along the length direction;
the limiting strip is detachably connected to the positioning strip, and the opening of the limiting groove is aligned with the opening of the positioning groove to form a limiting hole.
2. The spacing device for heat exchange tubes of claim 1, wherein:
the limiting mechanism further comprises a clamping pin, and the clamping pin is inserted into the positioning strip through the limiting strip; the limiting strip is used for fixing the limiting strip on the positioning strip.
3. The spacing device of heat exchange tubes as set forth in claim 2, wherein:
the limiting strip is bent to form the limiting groove protruding outwards, the non-bent part of the limiting strip forms the mounting part of the clamping pin, and the limiting groove is arranged at intervals with the clamping pin.
4. The spacing device of heat exchange tubes of claim 1 further comprising:
the outer side wall of the positioning ring is fixedly connected with at least one connecting part, the positioning ring is sleeved on the frame, and the connecting part is flexibly hinged to the pipe clamp mechanism.
5. The heat exchange tube spacing device as set forth in claim 4, wherein:
the connecting part is provided with a waist-shaped hole for adjusting the installation distance between the pipe clamp mechanism and the frame, and the pipe clamp mechanism moves in the waist-shaped hole.
6. A spacing device for a heat exchange tube as claimed in any one of claims 1 to 5, wherein:
the pipe clamp mechanism at least comprises two pipe clamp units which are arranged in parallel, wherein each pipe clamp unit comprises a plurality of pipe clamp strips which are arranged in parallel;
be provided with a plurality of pipe clamp on the pipe clamp strip, be provided with the connecting block between two adjacent pipe clamps, the face of connecting block is on a parallel with the central line of pipe clamp.
7. The heat exchange tube spacing device as set forth in claim 6, wherein:
the end parts of the pipe clamping strips are respectively provided with a mounting groove, and the groove walls of the mounting grooves are provided with hinge holes.
8. A spacing device for a heat exchange tube as claimed in any one of claims 1 to 5, wherein:
the rack comprises a plurality of rack cross beams which are arranged in parallel and a plurality of auxiliary cross beams which are arranged in parallel;
and at least one auxiliary cross beam is arranged between every two frame cross beams, the limiting mechanism is arranged on the auxiliary cross beams, and the pipe clamp mechanism is connected with the frame cross beams.
9. A heat exchange device comprising a spacing device as claimed in any one of claims 1 to 8, further comprising:
and the plurality of heat exchange pipes are arranged on the pipe clamping mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524132.3A CN107588676B (en) | 2016-07-06 | 2016-07-06 | Limiting device of heat exchange tube and heat exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524132.3A CN107588676B (en) | 2016-07-06 | 2016-07-06 | Limiting device of heat exchange tube and heat exchange device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107588676A CN107588676A (en) | 2018-01-16 |
| CN107588676B true CN107588676B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610524132.3A Active CN107588676B (en) | 2016-07-06 | 2016-07-06 | Limiting device of heat exchange tube and heat exchange device |
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| Country | Link |
|---|---|
| CN (1) | CN107588676B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489320A (en) * | 2018-05-14 | 2018-09-04 | 江苏康大联合节能科技有限公司 | A kind of novel metalloid heat exchanger flexible support |
| CN110057231A (en) * | 2019-03-18 | 2019-07-26 | 山东博然电力科技有限公司 | A kind of veneer structure of stationary heat exchangers heat exchanger tube |
| CN111366016A (en) * | 2020-04-22 | 2020-07-03 | 河南龙成煤高效技术应用有限公司 | Heat exchanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0081013A1 (en) * | 1981-12-03 | 1983-06-15 | The Babcock & Wilcox Company | Tube support structures |
| EP0088363A1 (en) * | 1982-03-09 | 1983-09-14 | STEIN INDUSTRIE Société Anonyme dite: | Apparatus for suspending heat exchanger pipe bundles |
| CN102927373A (en) * | 2012-10-24 | 2013-02-13 | 安徽誉丰汽车技术有限责任公司 | Combined type pipe clip assembly and assembly method thereof |
| CN104455752A (en) * | 2014-07-02 | 2015-03-25 | 三一重型装备有限公司 | Rubber pipe fixing device and hydraulic support |
| CN105156760A (en) * | 2015-03-17 | 2015-12-16 | 杭州斯泰新材料技术有限公司 | Easy-installation pipeline installing and fixing system |
| CN205860846U (en) * | 2016-07-06 | 2017-01-04 | 上海长园电子材料有限公司 | The stopping means of a kind of heat exchanger tube and heat-exchanger rig |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6874572B2 (en) * | 2002-03-22 | 2005-04-05 | Exxonmobil Research And Engineering Company | Heat exchanger flow-through tube supports |
| US7343964B2 (en) * | 2004-11-22 | 2008-03-18 | Exxonmobil Research & Engineering Company | Anti-vibration tube support |
| US7699093B2 (en) * | 2005-10-20 | 2010-04-20 | Exxonmobil Research And Engineering Company | Anti-vibration tube support for tube bundles having U-shaped bends |
| DE102010011644A1 (en) * | 2010-03-16 | 2011-09-22 | Babcock Borsig Service Gmbh | Retaining element and spacer plane of a tube bundle |
-
2016
- 2016-07-06 CN CN201610524132.3A patent/CN107588676B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0081013A1 (en) * | 1981-12-03 | 1983-06-15 | The Babcock & Wilcox Company | Tube support structures |
| EP0088363A1 (en) * | 1982-03-09 | 1983-09-14 | STEIN INDUSTRIE Société Anonyme dite: | Apparatus for suspending heat exchanger pipe bundles |
| CN102927373A (en) * | 2012-10-24 | 2013-02-13 | 安徽誉丰汽车技术有限责任公司 | Combined type pipe clip assembly and assembly method thereof |
| CN104455752A (en) * | 2014-07-02 | 2015-03-25 | 三一重型装备有限公司 | Rubber pipe fixing device and hydraulic support |
| CN105156760A (en) * | 2015-03-17 | 2015-12-16 | 杭州斯泰新材料技术有限公司 | Easy-installation pipeline installing and fixing system |
| CN205860846U (en) * | 2016-07-06 | 2017-01-04 | 上海长园电子材料有限公司 | The stopping means of a kind of heat exchanger tube and heat-exchanger rig |
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| CN107588676A (en) | 2018-01-16 |
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