CN218327560U - Petroleum pipeline safety inspection device - Google Patents
Petroleum pipeline safety inspection device Download PDFInfo
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- CN218327560U CN218327560U CN202222381567.0U CN202222381567U CN218327560U CN 218327560 U CN218327560 U CN 218327560U CN 202222381567 U CN202222381567 U CN 202222381567U CN 218327560 U CN218327560 U CN 218327560U
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- cover body
- lifting
- petroleum pipeline
- fixed
- support device
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- 239000003208 petroleum Substances 0.000 title claims abstract description 71
- 238000007689 inspection Methods 0.000 title claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 13
- 230000002146 bilateral effect Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 9
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005504 petroleum refining Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to an inspection device field, concretely relates to petroleum pipeline safety inspection device. The device comprises an inverted U-shaped cover body, wherein lifting frames are arranged on the left side and the right side of a cover body top plate in a sliding manner, the straight parts of the lifting frames are connected with the cover body top plate through vertical upper telescopic cylinders, the lower ends of the vertical parts of the lifting frames are rotatably connected with pinch rollers, upper motors are fixed at the lower ends of the vertical parts of the lifting frames, a supporting rod is fixed on the right side of the upper end of the cover body, a first photoelectric sensor is fixed on the lower side of the right end of the supporting rod, and a second photoelectric sensor is fixed at the lower end of the cover body top plate between the two lifting frames; the lifting support device is characterized by further comprising a lower plate which is detachably and fixedly connected with the lower end of the cover body, a lifting support device corresponding to the lifting frame is arranged on the lower plate, the upper end of the lifting support device is rotatably connected with a top wheel, and a lower motor is fixed to the upper end of the lifting support device. The utility model discloses, conveniently cross the flange on the petroleum pipeline, when crossing the flange on the petroleum pipeline, can guarantee to install holistic stability.
Description
Technical Field
The utility model relates to an inspection device field, concretely relates to petroleum pipeline safety inspection device.
Background
In the petroleum refining process, petroleum needs to be conveyed to petroleum refining equipment through pipelines, and the petroleum pipelines are exposed outdoors for a long time, so that the pipelines need to be regularly checked and detected through related equipment. The patent document with the application number of CN202121427651.0 and the invention name of 'a petroleum pipeline safety inspection device' discloses that the device comprises a second fixing seat, a controller is connected above the second fixing seat, an L-shaped support is connected to the position, close to the controller, above the second fixing seat, a detection instrument is connected to the lower portion of the L-shaped support, a box body is connected to one side of the second fixing seat, a second through hole is formed in the box body, a group of support frames … … are connected to the position, close to the second through hole, in the box body, the inner side of a protection cover is connected with a third motor, one end of an output shaft in the third motor is connected with a third shaft rod, one end of the third shaft rod is connected with a second bearing seat, the second bearing seat is connected with the protection cover, and the outer side of the third shaft rod is connected with a pulley. "the device is through opening the second motor, it is rotatory to drive the second gear in second shaft pole and its outside, it is rotatory to drive first gear, and then drive safety cover synchronous revolution, thereby it is rotatory to the inside pulley of safety cover, the contact of pulley and petroleum pipeline outer wall has been realized, open the third motor afterwards, it is rotatory to drive the pulley in third shaft pole and the outside, under pulley and petroleum pipeline outer wall connection effect, it removes along the pipeline outer wall to have realized whole device, it patrols and examines to have solved needs the handheld check out test set of workman, very waste time and energy problem.
However, because need connect through the ring flange between the pipeline, when passing through the flange, the device need separate first fixing base and second fixing base earlier and merge, troublesome poeration, it is low to patrol and examine work efficiency, and it is inconvenient to use.
The novel use patent with the application number of CN202220706235.2 and the invention name of petroleum pipeline safety inspection device describes that the novel use patent comprises a circular ring, wherein the circular ring comprises an arc-shaped rod A and two arc-shaped rods B, the arc-shaped rod A is fixedly connected with a slide rod A, the arc-shaped rod B is fixedly connected with a slide rod B, the slide rod A is in sliding fit with a slide bar, the slide bar is in threaded connection with an adjusting bolt, the lower end of the adjusting bolt is connected with a detection instrument, the circular ring is provided with a plurality of limiting wheels in annular equidistant distribution, the limiting wheels comprise connecting rods in sliding fit with the arc-shaped rod A and the arc-shaped rod B, the inner ends of the connecting rods are rotatably connected with rotating shafts, and two ends of the rotating shafts are both rotatably connected with a plurality of guide wheels. In the technical solution described in the patent, when a certain guide wheel contacts with the flange, the guide wheel drives the rotating shaft to rotate, and simultaneously the connecting rod slides to the outside of the circular ring, so that when the rotating shaft rotates 120 degrees, the guide wheel turns over the flange. Although the technical square bar described in the patent can conveniently pass through the flange on the pipeline, in the process that the guide wheel drives the rotating shaft to rotate and cross the flange, the contact point of the device and the pipeline is reduced, the stability of the device is poor, the device is easy to incline, and the flange is required to be strengthened and stabilized manually in the process of crossing the flange, so that the use is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an in-process that patrols and examines petroleum pipeline conveniently crosses the flange on the petroleum pipeline, petroleum pipeline safety inspection device that stability can be good in the use.
In order to realize the purpose, the utility model provides a technical scheme is:
a petroleum pipeline safety inspection device comprises a cover body in an inverted U shape, wherein lifting frames are arranged on the left side and the right side of a cover body top plate in a sliding mode, the lifting frames are in the inverted U shape, the vertical parts of the lifting frames penetrate through the cover body top plate, the vertical parts of the lifting frames are in sliding fit with the cover body top plate, the straight parts of the lifting frames are connected with the cover body top plate through vertical upper telescopic cylinders, the lower ends of the vertical parts of the lifting frames are rotatably connected with pressing wheels, upper motors are fixed at the lower ends of the vertical parts of the lifting frames, the pressing wheels on one side of the lifting frames are driven by the upper motors, a support rod is fixed on the right side of the upper end of the cover body, a first photoelectric sensor is fixed on the lower side of the right end of the support rod, and a second photoelectric sensor is fixed at the lower end of the cover body top plate between the two lifting frames; the lifting support device comprises a lifting support device and is characterized by further comprising a lower plate which is detachably and fixedly connected with the lower end of the cover body, the lower plate is provided with a lifting support device corresponding to the lifting frame, the upper end of the lifting support device is rotatably connected with a top wheel, a lower motor is fixed to the upper end of the lifting support device and drives the top wheel on one side of the lifting support device, a detection instrument is fixed to the upper end of the lower plate, the lower end of the top plate of the cover body and the end face, opposite to the front side wall and the rear side wall of the cover body, of the lower plate, and two vertical portions of the lifting frame are arranged in a bilateral symmetry mode according to the axis of the lifting support device below the lifting support device.
Specifically, the lifting support device comprises a vertical lower telescopic cylinder fixed on the lower plate, an ear seat is fixed at the upper end of a telescopic rod of the lower telescopic cylinder, a top wheel is connected in the ear seat in a rotating manner, a lower motor is fixedly connected with the ear seat, two vertical polish rods are fixed at the lower end of the ear seat and are arranged in a bilateral symmetry manner according to the axis of the lower telescopic cylinder, and the polish rods penetrate through the lower plate and are in sliding fit with the lower plate.
Specifically, the upper end of the cover body between the two lifting frames is fixed with a storage battery, the upper end of the cover body on one side of the storage battery is fixed with a controller, the upper end of the cover body on the other side of the storage battery is fixed with a buzzer, and the upper telescopic cylinder, the upper motor, the first photoelectric sensor, the second photoelectric sensor, the storage battery, the controller, the buzzer, the lower telescopic cylinder, the lower motor and the detection instrument are electrically connected.
Specifically, the top wheel and the pinch roller are both V-shaped rubber wheels.
Specifically, go up the cylinder body of telescoping cylinder and the straight fixed connection of portion of crane, go up the telescopic link and the cover body upper end fixed connection of telescoping cylinder.
Specifically, horizontal chutes are formed in the end faces, opposite to the lower ends of the front side wall and the rear side wall, of the cover body, sliding strips are fixed to the front end and the rear end of the lower plate, and the sliding strips are connected in the chutes on one sides in a sliding and clamping mode.
Specifically, the sliding groove is a dovetail groove, and the sliding strip is a dovetail sliding strip.
Specifically, a longitudinal through hole is formed in the lower plate, openings concentric with the through hole are formed in the slide bar, circular holes concentric with the openings are formed in the front side wall and the rear side wall of the cover body, and the pin rod penetrates through the circular holes, the openings and the through hole.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses, when patrolling and examining petroleum pipeline, conveniently cross the flange on the petroleum pipeline, when crossing the flange on the petroleum pipeline, can guarantee the holistic stability of device, can effectually prevent its slope, it needs the handheld check-out equipment of workman to patrol and examine to have solved, the problem of wasting time and energy, detecting instrument is at the in-process that detects petroleum pipeline, distance between detecting instrument and the petroleum pipeline can not increase, can improve the accuracy of testing result, can carry out all-round detection to petroleum pipeline, the condition of lou examining prevents to appear.
Drawings
Fig. 1 is a cross-sectional view of the present invention in operation on a petroleum pipeline.
Fig. 2 is a cross-sectional view of the present invention as it passes over a flange.
Fig. 3 is a side view of the present invention in operation on a petroleum pipeline.
Fig. 4 is a plan view of the lower plate.
Part names in the drawings are as follows:
controller for 1 petroleum pipeline 2, cover body 3, lower plate 4, lifting frame 5, upper telescopic cylinder 6 and storage battery 7
8 buzzer, 9 support rod, 10 first photoelectric sensor, 11 second photoelectric sensor
12 detection instrument 13 lower telescopic cylinder 14 ear seat 15 top wheel 16 polish rod 17 pin rod
Detailed Description
As shown in fig. 1-4, a petroleum pipeline safety inspection device, including the cover body 2 that is the type of falling U, the left and right sides of the cover body 2 roof all slides and is provided with crane 4, crane 4 is the type of falling U, crane 4's vertical portion runs through the cover body 2 roof, crane 4's vertical portion and cover body 2 roof sliding fit, crane 4's straight portion is connected through vertical last telescopic cylinder 5 with cover body 2 roof, go up telescopic cylinder 5's cylinder body and crane 4's straight portion fixed connection, go up telescopic cylinder 5's telescopic link and cover body 2 upper end fixed connection, crane 4's vertical portion lower extreme all rotates and is connected with pinch roller 19, pinch roller 19 is V type rubber wheel, adopts V type rubber wheel as pinch roller 19, can improve pinch roller 19 and petroleum pipeline 1's area of contact, prevents this device at the working process petroleum pipeline 1 outside circumference slip, crane 4's vertical portion lower extreme all is fixed with motor 18, goes up motor 18 and drives its pinch roller 19 of one side, and cover body 2 upper end right side is fixed with branch 9, and the branch 9 is fixed with first photoelectric sensor 10 to the branch 9 downside of the lower extreme of the cover body between two photoelectric sensors 11.
Still include the hypoplastron 3 that can dismantle fixed connection with the cover body 2 lower extreme, all seted up horizontal spout on the relative terminal surface of lateral wall lower extreme around the cover body 2, both ends all are fixed with draw runner 21 around the hypoplastron 3, and draw runner 21 slip joint is in the spout of its one side, the spout is the dovetail, and draw runner 21 is the dovetail draw runner, seted up fore-and-aft through-hole 22 on the hypoplastron 3, seted up on the draw runner 21 with the endocentric trompil of through-hole 22, seted up on the lateral wall around the cover body 2 with the endocentric round hole of trompil, round pin 17 runs through round hole, trompil and through-hole 22. The hypoplastron 3 can need to be made with engineering plastics material, consequently can reduce its weight, thereby when needs make the casing 2 pass through the bracing piece of petroleum pipeline 1 with hypoplastron 3 with the separation of the casing 2, conveniently with hypoplastron 3 and the separation of the casing 2, simultaneously, conveniently install hypoplastron 3.
The lifting support device corresponding to the lifting frame 4 is arranged on the lower plate 3, two vertical parts of the lifting frame 4 are arranged according to the axis bilateral symmetry of the lifting support device below the lifting support device, the upper end of the lifting support device is rotatably connected with a top wheel 15, the top wheel 15 is a V-shaped rubber wheel, the V-shaped rubber wheel is adopted as the top wheel 15, the contact area between the top wheel 15 and the petroleum pipeline 1 can be increased, the device is prevented from sliding circumferentially outside the petroleum pipeline 1 in the working process, a lower motor 20 is fixed at the upper end of the lifting support device, the lower motor 20 drives the top wheel 15 at one side of the lifting support device, and a detection instrument 12 is fixed at the upper end of the lower plate 3, at the lower end of the top plate of the cover body 2 and on the end face, opposite to the front side wall and the rear side wall, of the cover body 2.
The detecting instrument 12 can be an ultrasonic detector, and because the petroleum leakage can cause the petroleum pipeline 1 to vibrate, when the ultrasonic detector detects that the vibration of the petroleum pipeline 1 is abnormal, it indicates that the petroleum pipeline 1 of the detected section is abnormal. Meanwhile, the detecting instrument 12 can detect the petroleum associated gas in the air of the petroleum pipeline 1 accessory, when the petroleum pipeline 1 leaks, a large amount of petroleum associated gas can appear in the air of the leakage point accessory, and when the detecting instrument 12 detects that the petroleum associated gas exists in the air near the petroleum pipeline 1, the detected petroleum pipeline 1 is proved to leak.
The lifting support device comprises a vertical lower telescopic cylinder 13 fixed on the lower plate 3, an ear seat 14 is fixed at the upper end of a telescopic rod of the lower telescopic cylinder 13, a top wheel 15 is rotatably connected in the ear seat 14, a lower motor 20 is fixedly connected with the ear seat 14, two vertical polish rods 16 are fixed at the lower end of the ear seat 14, the two polish rods 16 are arranged in bilateral symmetry according to the axis of the lower telescopic cylinder 13, and the polish rods 16 penetrate through the lower plate 3 and are in sliding fit with the lower plate.
The upper end of the cover body 2 between the two lifting frames 4 is fixed with a storage battery 6, the upper end of the cover body 2 on one side of the storage battery 6 is fixed with a controller 7, the controller 7 adopts a programmable plc controller, the upper end of the cover body 2 on the other side of the storage battery 6 is fixed with a buzzer 8, and the upper telescopic cylinder 5, the upper motor 18, the first photoelectric sensor 10, the second photoelectric sensor 11, the storage battery 6, the controller 7, the buzzer 8, the lower telescopic cylinder 13, the lower motor 20 and the detecting instrument 12 are electrically connected.
When the petroleum pipeline 1 is detected, the cover body 2 is sleeved on the petroleum pipeline 1, the pinch roller 19 is in rolling contact with the upper end of the petroleum pipeline 1, the lower plate 3 is installed in the lower end of the cover body 2, the pin rod 17 penetrates through the front side wall and the rear side wall of the cover body 2, the slide bar 21 and the lower plate 3, after the lower plate 3 is installed, the top wheel 15 is tightly abutted to the lower end of the petroleum pipeline 1, then the power switch is turned on, the upper motor 18 drives the pinch roller 19 to rotate, the lower motor 20 drives the top wheel 15 to rotate, the device advances on the petroleum pipeline 1, meanwhile, the detection instrument 12 detects the petroleum pipeline 1, if the petroleum pipeline 1 leaks, the detection instrument 12 sends a signal to the controller 7, the controller 7 turns off the upper motor 18 and the lower motor 20 and enables the buzzer 8 to be started, and after the upper motor 18 and the lower motor 20 are turned off, the device stops moving, and the buzzer 8 reminds a patrolling person to inspect the petroleum pipeline 1 of the accessory of the device after being started.
As shown in fig. 2, in the process of the device moving on the petroleum pipeline 1, when the first photoelectric sensor 10 senses the flange, the first photoelectric sensor 10 sends a signal to the controller 7, after the controller 7 receives the signal of the first photoelectric sensor 10, the upper motor 18 and the lower motor 20 are turned off, the upper telescopic cylinder 5 and the lower telescopic cylinder 13 on the right side are started, the telescopic rods of the upper telescopic cylinder 5 and the lower telescopic cylinder 13 on the right side are retracted, and the crane 4 and the top wheel 15 on the right side are far away from the petroleum pipeline 1. At this time, the cover body 2 does not incline to the right side under the squeezing action of the pinch roller 19 on the left lifting frame 4 and the top wheel 15 on the left lifting support device on the petroleum pipeline 1. When the retraction of the telescopic rods of the upper telescopic cylinder 5 and the lower telescopic cylinder 13 on the right side is finished, the pinch roller 19 on the right side and the top wheel 15 on the right side are staggered with the flange. At the same time, the controller 7 activates the upper motor 18 and the lower motor 20. Subsequently, the mantle 2 and the lower plate 3 are moved in the right direction on the oil pipe 1 by the rotation of the left pinch roller 19 and the left top roller 15. When the second photoelectric sensor 11 senses the flange, the second photoelectric sensor 11 sends a signal to the controller 7, and after the controller 7 receives the signal of the second photoelectric sensor 11, the upper motor 18 and the lower motor 20 are turned off, and the telescopic rods of the upper telescopic cylinder 5 on the right side and the lower telescopic cylinder 13 on the right side are restored. At this moment, crane 4 on right side and the lift strutting arrangement on right side are located the flange right side, the telescopic link of last telescoping cylinder 5 on right side and the lower telescoping cylinder 13 on right side is reduced the back, pinch roller 19 on right side and top wheel 15 on right side tightly support the petroleum pipeline 1 on flange right side, the telescopic link of last telescoping cylinder 5 on right side and the telescopic link of the lower telescoping cylinder 13 on right side are reduced the completion back, controller 7 makes the telescopic link of left last telescoping cylinder 5 and the telescopic link of left lower telescoping cylinder 13 retract, thereby make left side pinch roller 19 and left top wheel 15 keep away from petroleum pipeline 1, pinch roller 19 on crane 4 on right side and the top wheel 15 on the lift strutting arrangement on right side are under the squeezing action to petroleum pipeline 1, the cover body 2 can not incline to the left side direction. After the retraction of the telescopic rods of the left upper telescopic cylinder 5 and the left lower telescopic cylinder 13 is completed, the controller 7 starts the upper motor 18 and the lower motor 20, and then the cover body 2 and the lower plate 3 move to the right direction on the petroleum pipeline 1 under the rotation of the left pinch roller 19 and the left top wheel 15. After the device moves towards the right side for a set time, the controller 7 enables the telescopic rod of the upper left telescopic cylinder 5 and the telescopic rod of the lower left telescopic cylinder 13 to restore, after the telescopic rod of the upper left telescopic cylinder 5 and the telescopic rod of the lower left telescopic cylinder 13 restore, the left pinch roller 19 and the left top wheel 15 are in rolling contact with the petroleum pipeline 1, and at the moment, the device completely crosses the flange and can continuously detect the petroleum pipeline 1. In the process that the device crosses the flange, the distance between the detection instrument 12 and the petroleum pipeline 1 is not changed, so that the accuracy of the detection result of the petroleum pipeline 1 can be improved.
When the device needs to penetrate through the supporting column at the lower end of the petroleum pipeline 1, the lower plate 3 can be separated from the cover body 2, and then the cover body 2 is moved to the petroleum pipeline 1 on the right side of the supporting column and then the lower plate 3 is installed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The petroleum pipeline safety inspection device comprises an inverted U-shaped cover body (2), and is characterized in that lifting frames (4) are arranged on the left side and the right side of a top plate of the cover body (2) in a sliding mode, the lifting frames (4) are inverted U-shaped, the vertical parts of the lifting frames (4) penetrate through the top plate of the cover body (2), the vertical parts of the lifting frames (4) are in sliding fit with the top plate of the cover body (2), the straight parts of the lifting frames (4) are connected with the top plate of the cover body (2) through vertical upper telescopic cylinders (5), the lower ends of the vertical parts of the lifting frames (4) are rotatably connected with pressing wheels (19), the lower ends of the vertical parts of the lifting frames (4) are fixedly provided with upper motors (18), the upper motors (18) drive the pressing wheels (19) on one side of the lifting frames, a support rod (9) is fixedly arranged on the right side of the upper end of the cover body (2), a first photoelectric sensor (10) is fixedly arranged on the lower side of the right end of the support rod (9), and a second photoelectric sensor (11) is fixedly arranged at the lower end of the top plate of the cover body (2) between the two lifting frames (4); the lifting support device is characterized by further comprising a lower plate (3) which is detachably and fixedly connected with the lower end of the cover body (2), a lifting support device corresponding to the lifting frame (4) is arranged on the lower plate (3), the upper end of the lifting support device is rotatably connected with a top wheel (15), a lower motor (20) is fixed to the upper end of the lifting support device, the lower motor (20) drives the top wheel (15) on one side of the lifting support device, the upper end of the lower plate (3), the lower end of a top plate of the cover body (2) and the end face, opposite to the front side wall and the rear side wall of the cover body (2), are fixedly provided with a detection instrument (12), and two vertical parts of the lifting frame (4) are arranged in a bilateral symmetry mode according to the axis of the lifting support device below the lifting support device.
2. The petroleum pipeline safety inspection device according to claim 1, wherein the lifting support device comprises a lower vertical telescopic cylinder (13) fixed on the lower plate (3), an ear seat (14) is fixed at the upper end of a telescopic rod of the lower telescopic cylinder (13), a top wheel (15) is rotatably connected in the ear seat (14), a lower motor (20) is fixedly connected with the ear seat (14), two vertical polish rods (16) are fixed at the lower end of the ear seat (14), the two polish rods (16) are arranged in bilateral symmetry according to the axis of the lower telescopic cylinder (13), and the polish rods (16) penetrate through the lower plate (3) and are in sliding fit with the lower plate.
3. The petroleum pipeline safety inspection device according to claim 2, wherein a storage battery (6) is fixed to the upper end of the cover body (2) between the two lifting frames (4), a controller (7) is fixed to the upper end of the cover body (2) on one side of the storage battery (6), a buzzer (8) is fixed to the upper end of the cover body (2) on the other side of the storage battery (6), and the upper telescopic cylinder (5), the upper motor (18), the first photoelectric sensor (10), the second photoelectric sensor (11), the storage battery (6), the controller (7), the buzzer (8), the lower telescopic cylinder (13), the lower motor (20) and the detection instrument (12) are electrically connected.
4. A petroleum pipeline safety inspection device according to claim 1, wherein the top wheels (15) and the pinch wheels (19) are both V-shaped rubber wheels.
5. The petroleum pipeline safety inspection device according to claim 1, wherein the cylinder body of the upper telescopic cylinder (5) is fixedly connected with the straight portion of the lifting frame (4), and the telescopic rod of the upper telescopic cylinder (5) is fixedly connected with the upper end of the cover body (2).
6. The petroleum pipeline safety inspection device according to claim 1, wherein the cover body (2) has transverse sliding grooves formed on the opposite end surfaces of the lower ends of the front and rear side walls, the lower plate (3) has sliding strips (21) fixed to the front and rear ends thereof, and the sliding strips (21) are slidably clamped in the sliding grooves on one side thereof.
7. The petroleum pipeline safety inspection device according to claim 6, wherein the sliding groove is a dovetail groove, and the sliding strip (21) is a dovetail sliding strip.
8. A petroleum pipeline safety inspection device according to claim 6, wherein the lower plate (3) is provided with a longitudinal through hole (22), the slide bar (21) is provided with an opening concentric with the through hole (22), the front and rear side walls of the cover body (2) are provided with round holes concentric with the opening, and the pin rod (17) penetrates through the round holes, the opening and the through hole (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222381567.0U CN218327560U (en) | 2022-09-08 | 2022-09-08 | Petroleum pipeline safety inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222381567.0U CN218327560U (en) | 2022-09-08 | 2022-09-08 | Petroleum pipeline safety inspection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218327560U true CN218327560U (en) | 2023-01-17 |
Family
ID=84834204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222381567.0U Expired - Fee Related CN218327560U (en) | 2022-09-08 | 2022-09-08 | Petroleum pipeline safety inspection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218327560U (en) |
-
2022
- 2022-09-08 CN CN202222381567.0U patent/CN218327560U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20230117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |