CN209622185U - Valve opening-preventing device - Google Patents
Valve opening-preventing device Download PDFInfo
- Publication number
- CN209622185U CN209622185U CN201822114069.3U CN201822114069U CN209622185U CN 209622185 U CN209622185 U CN 209622185U CN 201822114069 U CN201822114069 U CN 201822114069U CN 209622185 U CN209622185 U CN 209622185U
- Authority
- CN
- China
- Prior art keywords
- threaded hole
- valve
- bar
- chamber door
- backboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003447 ipsilateral effect Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 239000010779 crude oil Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003129 oil well Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract 5
- 230000002265 prevention Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Valve Housings (AREA)
Abstract
The utility model discloses a device is prevented opening by valve belongs to oil engineering technical field. The device comprises a fixing component and a locking component, wherein the fixing component comprises a top plate, at least two penetrating rods fixed on the same side of the top plate and penetrating rod nuts; the locking assembly comprises a coaming, a back plate, a box door and a lockset, wherein the back plate and the box door are arranged on the two opposite sides of the coaming, and the coaming, the back plate and the box door can be encircled to form a closed box body. The valve opening prevention device provided by the embodiment of the utility model has simple structure, can be manufactured by oneself, can save cost and solve the problem of high cost of the anti-theft valve; in addition, the rod penetrating nut is arranged in the box body to be connected with the penetrating rod, so that a conventional wrench cannot be used for fastening and detaching the penetrating rod nut, a special wrench sleeve needs to be adopted for operation, the universality of accessories is avoided, external personnel cannot open the valve, or the difficulty of opening the valve is increased, crude oil loss is avoided to the greatest extent, and normal production of an oil well is ensured.
Description
Technical field
The utility model relates to petroleum works technical field, in particular to a kind of valve anti-open device.
Background technique
The production tree valve of Oil Field application mostly uses handwheel to carry out control switch greatly.In production, sleeve valve is general
State in closing.However, sleeve valve can be opened by being frequently found external staff, and carry out oil steathily by perfusion cannula,
Cause crude oil to lose, or even causes oil well production failure.
Crude oil is stolen in order to avoid sleeve valve is arbitrarily opened, the prior art would generally add anti-at sleeve valve
Pirate of the open measure.For example, using special valve for guarding against theft as sleeve valve.
Designer discovery in the prior art the prior art has at least the following problems:
It is on the one hand at high cost using special valve for guarding against theft, antitheft expense is increased, valve for guarding against theft is on the other hand opened
Accessory is general, for a long time using being easy to be cracked.
Utility model content
The utility model embodiment provides a kind of valve anti-open device, can solve the above problems.
Specifically, including technical solution below:
Provide a kind of valve anti-open device, comprising: fixation kit and locked assembly；
The fixation kit include top plate, be fixed on the top plate the same side at least two bars and bar spiral shell
It is female；
The locked assembly include coaming plate, be arranged in the coaming plate opposite sides backboard and chamber door and lockset,
In, the coaming plate, the backboard and the chamber door can enclose a closed cabinet；
Pole perforating hole is offered on the backboard, the bar may pass through the pole perforating hole, and solid by the bar nut
It is scheduled on the backboard；
One end of the chamber door is hinged on the coaming plate, and the other end is fixed on the coaming plate by the lockset.
In a kind of possible design, the first locating slot, first locating slot and the valve are provided on the top plate
The handwheel outer profile of door is adapted；
First locating slot and the bar are ipsilateral, and the bar is located at the inside of first locating slot.
In a kind of possible design, be additionally provided with the second locating slot on the top plate, second locating slot with it is described
Fixture nut in the middle part of the handwheel of valve is adapted；
Second locating slot and the bar are ipsilateral, and second locating slot be located at least two bar it
Between.
In a kind of possible design, backboard fixation hole, the backboard fixation hole and the valve are provided on the backboard
The bottom boss of door is adapted.
In a kind of possible design, the exterior contour of the bar nut is in triangle, or is in quadrangle, or is in five sides
Shape.
In a kind of possible design, the locked assembly further includes the first bolt；And
The cabinet is internally provided with the first threaded hole；
The second threaded hole is provided on the chamber door, second threaded hole is counterbore；
First bolt passes through second threaded hole and is fixed in first threaded hole；Wherein, first spiral shell
The end of bolt has interior polygonal connected in star, and the interior polygonal is triangle, or is quadrangle, or is pentagon.
In a kind of possible design, it is provided with the first convex block towards the box house on the coaming plate, described
One threaded hole is provided on first convex block；
The second convex block towards the box house is provided on the chamber door, second threaded hole is provided with described
On two convex blocks.
In a kind of possible design, the locked assembly further includes the second bolt；And
The cabinet is internally provided with third threaded hole；
The 4th threaded hole is provided on the chamber door, the 4th threaded hole is counterbore；
Second bolt passes through the 4th threaded hole and is fixed in the third threaded hole；Wherein, second spiral shell
The end profile of bolt is in polygonal, and the polygonal is triangle, or is quadrangle, or is pentagon.
In a kind of possible design, it is provided with the third convex block towards the box house on the coaming plate, described
Three threaded holes are provided on the third convex block；
The 4th convex block towards the box house is provided on the chamber door, the 4th threaded hole is provided with described
On four convex blocks.
Technical solution bring beneficial effect provided by the embodiment of the utility model includes at least:
Valve anti-open device provided by the embodiment of the utility model includes fixation kit and locked assembly, structure letter
It is single, can self manufacture so as to save the cost solve the problems, such as that valve for guarding against theft is at high cost；In addition, passing through setting bar nut
Bar is connected in cabinet, so that common spanner cannot be used for the fastening and disassembly of bar nut, is needed using Special pull gloves
Cylinder is operated, and is thus avoided the versatility of accessory, is made external staff that can not open valve, or increases the difficulty for opening valve
Degree, avoids crude oil from losing, it is ensured that oil well normally produces to the greatest extent.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram of fixation kit provided by the embodiment of the utility model；
Fig. 2 is a kind of structural schematic diagram of locked assembly provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of Fig. 2 dorsulum；
Fig. 4 is the structural schematic diagram of the first spanner provided by the embodiment of the utility model；
Fig. 5 is the structural schematic diagram of the second spanner provided by the embodiment of the utility model.
Appended drawing reference in figure respectively indicates:
1- fixation kit；
11- top plate；The first locating slot of 1101-；The second locating slot of 1102-；
12- bar；
13- bar nut；
2- locked assembly；
21- coaming plate；The first threaded hole of 2101-；2102- third threaded hole；
22- backboard；2201- pole perforating hole；2202- backboard fixation hole；
23- chamber door；The second threaded hole of 2301-；The 4th threaded hole of 2302-；
The first bolt of 24-；
The second bolt of 25-；
The first spanner of 3-；
The second spanner of 4-.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with attached drawing
Mode is described in further detail.Unless otherwise defined, all technical terms used in the utility model embodiment all have
With the normally understood identical meaning of those skilled in the art.
In the description of the present invention, it should be noted that term " on ", "lower", "top", "bottom", "inner", "outside" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship usually put, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.In addition, term " first ", " second ", etc. be only used for distinguishing description, and should not be understood as instruction or dark
Show relative importance or implicitly indicates the quantity of indicated technical characteristic.
The utility model embodiment provides a kind of valve anti-open device, as shown in Figure 1-3, the valve anti-open device
It include: fixation kit 1 and locked assembly 2；
At least two bars 12 and bar nut of the fixation kit 1 including top plate 11, the same side for being fixed on top plate 11
13；
Locked assembly 2 includes coaming plate 21, the backboard 22 for the opposite sides that coaming plate 21 is arranged in and chamber door 23 and lockset,
Wherein, coaming plate 21, backboard 22 and chamber door 23 can enclose a closed cabinet；
Pole perforating hole 2201 is offered on backboard 22, bar 12 may pass through pole perforating hole 2201, and fixed by bar nut 13
On backboard 22；
One end of chamber door 23 is hinged on coaming plate 21, and the other end is fixed on coaming plate 21 by lockset.
In application, the bar 12 of fixation kit 1 is made to be each passed through the gap of valve handle, the top plate 11 of fixation kit 1 is pasted
On the handwheel of nearly valve, bar 12 extends to the bottom of valve, and is located at the two sides of valve；Then pass through the bar on backboard 22
Locked assembly 2 is mounted on fixation kit 1 by hole 2201, and bar 12 is fixed on backboard 22 using bar nut 13 (by
Bar 12 is enclosed in a relatively small cabinet in coaming plate 21, therefore bar nut 13 cannot be consolidated using common spanner
It is fixed, need to be fixed using special spanner sleeve), chamber door 23 is finally closed, chamber door 23 is fixed using lockset and is locked.When need
When opening valve, operator needs first to open lockset with key, then opens chamber door 23, then twist using special spanner sleeve
Bar nut 13 is opened, locked assembly 2 is removed, then removes fixation kit 1, so that it may operate handwheel and switch.
It is understood that one end of bar 12 can be fixed by welding on top plate 11, the other end is provided with screw thread, uses
It is fixedly connected in bar nut 13.Wherein for the length of bar 12, it can be determined according to practical valve situation, generally may be used
So that the length of bar 12 is slightly longer than valve length is advisable.
Valve anti-open device provided by the embodiment of the utility model includes fixation kit 1 and locked assembly 2, structure letter
It is single, can self manufacture so as to save the cost solve the problems, such as that valve for guarding against theft is at high cost；In addition, passing through setting bar nut
13 connect bar 12 in cabinet, so that common spanner cannot be used for the fastening and disassembly of bar nut 13, need using dedicated
Wrench socket is operated, and the versatility of accessory is thus avoided, and makes external staff that can not open valve, or increases opening valve
The difficulty of door, avoids crude oil from losing, it is ensured that oil well normally produces to the greatest extent.
In the prior art, also carried out frequently with the mode for being welded valve export plug antitheft, but external staff is generally
Weld seam, and forged scene can be destroyed, makes to be not easy to be found when employee Cha Jing.And apply valve provided by the embodiment of the utility model
Anti-open device, if scene is not easy to pretend by strong destruction, employee can have found and deal in time in patrol.
In above-mentioned valve anti-open device, for the ease of fixation of the fixation kit 1 on valve handle, such as Fig. 1 institute
Show, the first locating slot 1101 can be provided on top plate 11, and the first locating slot 1101 is adapted with the handwheel outer profile of valve；
First locating slot 1101 and bar 12 are ipsilateral, and bar 12 is located at the inside of the first locating slot 1101.
In application, the bar 12 of fixation kit 1 to be each passed through to the gap of valve handle, the handwheel of valve can be made to be located at the
In a positioning groove 1101, consequently facilitating fixation kit 1 is fixed on handwheel.Meanwhile first locating slot 1101 cell wall also opponent
Wheel plays a protective role, and avoids the rotation of valve handle.
Further, as shown in Figure 1, the second locating slot 1102 can also be arranged on top plate 11, the second locating slot 1102 with
Fixture nut in the middle part of the handwheel of valve is adapted；
Second locating slot 1102 and bar 12 are ipsilateral, and the second locating slot 1102 is between at least two bars 12.
In application, the bar 12 of fixation kit 1 to be each passed through to the gap of valve handle, it is fixed that the handwheel of valve is located at first
In the slot 1101 of position, meanwhile, the cell wall of the second locating slot 1102 blocks the fixture nut in the middle part of the handwheel of valve, thus can realize pair
Valve handle further fixes.
Similarly, the fixation for the ease of locked assembly 2 on valve handle, as shown in figure 3, can also be set on backboard 22
Backboard fixation hole 2202 is set, backboard fixation hole 2202 is adapted with the bottom boss of valve.
In application, the bottom boss of valve can be made to be stuck on backboard fixation hole 2202, so that locked assembly 2 is fixed on valve
On handwheel, it is convenient for subsequent operation.Wherein, backboard fixation hole 2202 can be set to have shape compatible with the bottom boss of valve
Shape, for example, being rectangular.
Furthermore, it is contemplated that security insurance can also be designed further following on the basis of above-mentioned valve anti-open device
Antitheft details.
Since the exterior contour of common fixture nut is hexagon (i.e. " hex nut "), in order to increase opening difficulty,
It can make bar nut 13 that there is unconventional exterior contour, such as make external shape in triangle (triangle nut) or quadrangle (four
Angle nut) or pentagon (pentagon nut) or any other unconventional shape.Correspondingly, operator can be according to bar nut
13 exterior contour designs corresponding wrench socket, and the exterior contour of the inside groove and bar nut 13 that make wrench socket is adapted,
And it can be used to specially opening or tightening bar nut 13.
Further, in order to increase the opening difficulty of chamber door 23, thus the anti-theft effect of stiffening device, as shown in Fig. 2, can
Making locked assembly 2 further includes the first bolt 24；And
Cabinet is internally provided with the first threaded hole 2101；
The second threaded hole 2301 is provided on chamber door 23, the second threaded hole 2301 is counterbore；
First bolt 24 passes through the second threaded hole 2301 and is fixed in the first threaded hole 2101；Wherein, first bolt 24
End has interior polygonal connected in star, and interior polygonal is triangle, or is quadrangle, or is pentagon.
In application, after closing chamber door 23, the first screw thread of the second threaded hole 2301 and the inside of cabinet on chamber door 23
Hole 2101 is corresponding, then passes through the second threaded hole 2301 using the first bolt 24 and is fixed in the first threaded hole 2101.
Since the second threaded hole 2301 is counterbore, the end of the first bolt 24 will be submerged in counterbore, and needing to use has
First spanner 3 (as shown in Figure 4) of stopper is opened, and the shape of stopper will be with the groove shapes of the end of the first bolt 24
It is adapted.
For example, when the end of the first bolt 24 has interior pentagon, as shown in figure 4, the stopper of the first spanner 3 can be made
Exterior contour is in pentagon.
More specifically, as shown in Fig. 2, can make to be provided with the first convex block towards box house, the first screw thread on coaming plate 21
Hole 2101 is provided on the first convex block；
The second convex block towards the box house is provided on chamber door 23, the second threaded hole 2301 is provided with the second convex block
On.
Similarly, in order to further strengthen the anti-theft effect of device, as shown in Fig. 2, locked assembly 2 can be made to further include second
Bolt 25；And
Cabinet is internally provided with third threaded hole 2102；
The 4th threaded hole 2302 is provided on chamber door 23, the 4th threaded hole 2302 is counterbore；
Second bolt 25 passes through the 4th threaded hole 2302 and is fixed in third threaded hole 2102, and the end of the second bolt 25
Profile is in polygonal, and polygonal is triangle, or is quadrangle, or is pentagon.
In application, after closing chamber door 23, the third screw thread of the 4th threaded hole 2302 and the inside of cabinet on chamber door 23
Hole 2102 is corresponding, then passes through the 4th threaded hole 2302 using the second bolt 25 and is fixed in third threaded hole 2102.
Since the 4th threaded hole 2302 is counterbore, the end of the second bolt 25 will be submerged in counterbore, and needing to use has
Second spanner 4 (as shown in Figure 5) of sleeve is opened, and the inner cylinder shape of sleeve will be with the outside of the end of the second bolt 25
Profile is adapted.
For example, when the end profile of the second bolt 25 is in pentagon, as shown in figure 5, can make in the sleeve of the second spanner 4
Cylinder is in pentagon.
More specifically, as shown in Fig. 2, being provided with the third convex block towards box house, third threaded hole on coaming plate 21
2102 are provided on third convex block；
The 4th convex block towards box house is provided on chamber door 23, the 4th threaded hole 2302 is provided with the 4th convex block
On.
When needing to close valve, after bar nut 13 being fixed, chamber door 23 is closed, by special spanner (example
Such as the first spanner 3) it is fixed on the first bolt 24 in first threaded hole 2101 across the second threaded hole 2301, by special spanner
(such as second spanner 4) is fixed on the second bolt 25 in third threaded hole 2102 across the 4th threaded hole 2302, then utilizes
The fixed locking of chamber door 23 is realized multiple-protection by lockset；When needing to open valve, operator needs first to be opened with key and lock
Tool backs out the first bolt 24 and the second bolt 25 by the first spanner 3 and the second spanner 4 respectively, opens chamber door 23, then using special
Bar nut 13 is unscrewed with wrench socket, removes locked assembly 2, then removes fixation kit 1, handwheel could be operated and opened
It closes.Make external staff that can not open valve as a result, or increase the difficulty for opening valve, avoids crude oil from losing to the greatest extent,
Ensure that oil well normally produces.
The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of valve anti-open device characterized by comprising fixation kit (1) and locked assembly (2)；
The fixation kit (1) include top plate (11), be fixed on the top plate (11) the same side at least two bars (12),
And bar nut (13)；
The locked assembly (2) include coaming plate (21), setting the coaming plate (21) opposite sides backboard (22) and chamber door
(23) and lockset, wherein the coaming plate (21), the backboard (22) and the chamber door (23) can enclose one it is closed
Cabinet；
It is offered pole perforating hole (2201) on the backboard (22), the bar (12) may pass through the pole perforating hole (2201), and lead to
The bar nut (13) is crossed to be fixed on the backboard (22)；
One end of the chamber door (23) is hinged on the coaming plate (21), and the other end is fixed on the coaming plate by the lockset
(21) on.
2. valve anti-open device according to claim 1, which is characterized in that it is fixed to be provided with first on the top plate (11)
Position slot (1101), first locating slot (1101) are adapted with the handwheel outer profile of the valve；
First locating slot (1101) and the bar (12) are ipsilateral, and the bar (12) is located at first locating slot
(1101) inside.
3. valve anti-open device according to claim 2, which is characterized in that be additionally provided with second on the top plate (11)
Locating slot (1102), second locating slot (1102) are adapted with the fixture nut in the middle part of the handwheel of the valve；
Second locating slot (1102) and the bar (12) are ipsilateral, and second locating slot (1102) be located at it is described at least
Between two bars (12).
4. valve anti-open device according to claim 1, which is characterized in that it is solid to be provided with backboard on the backboard (22)
Determine hole (2202), the backboard fixation hole (2202) is adapted with the bottom boss of the valve.
5. valve anti-open device according to claim 1, which is characterized in that the exterior contour of the bar nut (13)
In triangle, or it is in quadrangle, or is in pentagon.
6. valve anti-open device according to claim 1, which is characterized in that the locked assembly (2) further includes first
Bolt (24)；And
The cabinet is internally provided with the first threaded hole (2101)；
It is provided with the second threaded hole (2301) on the chamber door (23), second threaded hole (2301) is counterbore；
First bolt (24) passes through second threaded hole (2301) and is fixed in first threaded hole (2101)；Its
In, the end of first bolt (24) has interior polygonal connected in star, and the interior polygonal is triangle, or is quadrangle,
It or is pentagon.
7. valve anti-open device according to claim 6, which is characterized in that be provided on the coaming plate (21) towards institute
The first convex block of box house is stated, first threaded hole (2101) is provided on first convex block；
The second convex block towards the box house is provided on the chamber door (23), second threaded hole (2301) is provided with
On second convex block.
8. valve anti-open device according to claim 1, which is characterized in that the locked assembly (2) further includes second
Bolt (25)；And
The cabinet is internally provided with third threaded hole (2102)；
The 4th threaded hole (2302) is provided on the chamber door (23), the 4th threaded hole (2302) is counterbore；
Second bolt (25) passes through the 4th threaded hole (2302) and is fixed in the third threaded hole (2102)；Its
In, the end profile of second bolt (25) is in polygonal, and the polygonal is triangle, or is quadrangle, or is five
Side shape.
9. valve anti-open device according to claim 8, which is characterized in that be provided on the coaming plate (21) towards institute
The third convex block of box house is stated, the third threaded hole (2102) is provided on the third convex block；
The 4th convex block towards the box house is provided on the chamber door (23), the 4th threaded hole (2302) is provided with
On 4th convex block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822114069.3U CN209622185U (en) | 2018-12-17 | 2018-12-17 | Valve opening-preventing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822114069.3U CN209622185U (en) | 2018-12-17 | 2018-12-17 | Valve opening-preventing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209622185U true CN209622185U (en) | 2019-11-12 |
Family
ID=68445920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822114069.3U Active CN209622185U (en) | 2018-12-17 | 2018-12-17 | Valve opening-preventing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209622185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322454A (en) * | 2018-12-17 | 2020-06-23 | 中国石油天然气股份有限公司 | Valve opening-preventing device |
-
2018
- 2018-12-17 CN CN201822114069.3U patent/CN209622185U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322454A (en) * | 2018-12-17 | 2020-06-23 | 中国石油天然气股份有限公司 | Valve opening-preventing device |
| CN111322454B (en) * | 2018-12-17 | 2024-06-25 | 中国石油天然气股份有限公司 | Valve anti-opening device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3349947A (en) | Closure | |
| US20130004260A1 (en) | Connection means and lock mounting device with such connection means | |
| CN209622185U (en) | Valve opening-preventing device | |
| CN111322454B (en) | Valve anti-opening device | |
| CN219221014U (en) | Antitheft bolt | |
| CN201024952Y (en) | Theft prevention well mouth device | |
| CN203214558U (en) | Center hexagonal anti-theft bolt | |
| CN2781112Y (en) | Ball valve capable of locking | |
| CN202039686U (en) | Anti-prizing lock device for railways | |
| CN110778585A (en) | Anti-theft structure of anti-theft bolt | |
| CN207392903U (en) | Low-voltage tapping box theft-proof door lock structure | |
| CN207363530U (en) | A kind of antitheft door | |
| CN217420798U (en) | Front panel assembly and door lock | |
| CN213954119U (en) | Improved bolt | |
| CN204099710U (en) | A kind of sample cock alarm | |
| CN218150295U (en) | Fence lock and fence lock system | |
| CN204003914U (en) | Box type transformer | |
| CN215595259U (en) | Simple door lock of glass vertical hinged door for engineering | |
| CN210271967U (en) | Three-phase combined type transformer high-low voltage chamber anti-theft structure | |
| CN208619081U (en) | A kind of wellhead safety anti-theft plug valve | |
| CN209892851U (en) | Heat supply pipeline valve fastener | |
| CN215830929U (en) | Bolt with lock | |
| CN208417188U (en) | A kind of anti-theft bolt | |
| CN209208915U (en) | A kind of antitheft battery device of electric vehicle | |
| CN209603622U (en) | A kind of lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |