CN214248124U - Safety protection device for well control pressure test - Google Patents
Safety protection device for well control pressure test Download PDFInfo
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- CN214248124U CN214248124U CN202120110970.2U CN202120110970U CN214248124U CN 214248124 U CN214248124 U CN 214248124U CN 202120110970 U CN202120110970 U CN 202120110970U CN 214248124 U CN214248124 U CN 214248124U
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- 238000012360 testing method Methods 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 abstract description 11
- 239000000945 filler Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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Abstract
The utility model discloses a safety device of well control pressure testing, including the safety device body, the safety device body includes two connecting rods, fixes returning the shape frame on two connecting rod tops and fixing the casing in two connecting rod bottoms, it has the collar to return the equal fixed mounting in four sides of shape frame, it installs the apron to rotate on the left side inner wall of shape frame, and establish to the arc structure on the right side of apron, and the top fixed mounting of apron has T shape pull head, and fixed mounting has the supporting shoe on the right side inner wall of shape frame, the top of supporting shoe and the bottom one side active contact of apron. The utility model relates to a rationally, be convenient for alleviate the hard impact force that the eminence dropped the object, reduce the damage risk because of the impact force is great causes, and be convenient for realize the fixed and unblock of buffering protection machanism and apron fast through wireless remote control's mode, make things convenient for personnel to operate, and wireless remote control's mode can reduce the risk that irrelevant personnel opened, satisfy the user demand.
Description
Technical Field
The utility model relates to a safety protection equipment technical field especially relates to a safety device of well control pressure testing.
Background
In the oil and gas drilling process, well control pressure testing is the important equipment of high-pressure oil gas stream in the control well, ensures that drilling and development operation process can carry out safely and implement smoothly important guarantee, and well control pressure testing refers to the general name of the required professional equipment and the instrument of implementation oil and gas well pressure control technique to mainly prevent ejector, throttle killing manifold, well head valve, in order to guarantee the security of pressure testing work, consequently need use safety device, for example application number: 201820367747.4 discloses a safety protection device for well control pressure test, which comprises a frame body, a cover body, a lock rod, a connecting rod and a clapboard, the two sides of the frame body are provided with fixed plates, the top of the frame body is provided with two groups of fixed rods, the bottom of the frame body is provided with two groups of connecting rods, the bottom of the connecting rod is provided with a first shell, the first shell is filled with energy-absorbing filler, the bottom of the reinforced hinge curtain is provided with a cover body, the interior of the cover body is provided with three groups of supporting rods, the top of the cover body is provided with a baffle plate, two groups of buckles are arranged on one side of the top of the baffle plate, lock holes are arranged on the baffle plate between the buckles, a clamping sleeve matched with the buckle is arranged on one side of the frame body, when the water pressure is reduced and the water flow is sprayed out due to overlarge water pressure by arranging the partition plate, impact force on the cover body increases the pressure resistance of the device, and meanwhile, the impact of ground vibration on the device can be reduced through the energy-absorbing filler;
above-mentioned patent still has some not enoughly, and it is nevertheless accessible energy-absorbing filler reduces the influence that ground vibration caused the device, but its rigid impact force of alleviating the lid eminence object that drops is not convenient for, and it is great often to have the risk that causes the lid to damage because of rigid impact force, and then influences the normal use of whole device, can not satisfy the user demand, therefore we have proposed the safety device of a well control pressure testing and have been used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a safety protection device for well control pressure test.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a safety device for well control pressure test comprises a safety device body, wherein the safety device body comprises two connecting rods, a clip-shaped frame fixed at the top ends of the two connecting rods and a shell fixed at the bottom ends of the two connecting rods, four sides of the clip-shaped frame are fixedly provided with mounting rings, a cover plate is rotatably mounted on the inner wall of the left side of the clip-shaped frame, the right side of the cover plate is of an arc structure, the top of the cover plate is fixedly provided with a T-shaped pull head, the inner wall of the right side of the clip-shaped frame is fixedly provided with a supporting block, the top of the supporting block is movably contacted with one side of the bottom of the cover plate, the top of the clip-shaped frame is provided with a buffer protection mechanism and a locking mechanism matched with the buffer protection mechanism, the buffer protection mechanism comprises two supporting plates arranged at the top of the clip-shaped frame, the two supporting plates are slidably sleeved with a same protection plate, and the top of the supporting plates is fixedly provided with an anti-falling block, the support plate positioned on the left side of the two support plates is rotatably installed on the top of the left side of the square-shaped frame, the same positioning rod is fixedly installed between the two support plates, the bottom of each protection plate is provided with a first groove, the front side and the rear side of each first groove are both provided with openings, an elastic air bag is fixedly bonded between the inner wall of the top of each first groove and the top of each positioning rod, a first spring is fixedly installed between the inner wall of the top of each elastic air bag and the inner wall of the bottom of each elastic air bag, two sides of each elastic air bag are movably contacted with a movable plate, the movable plates are slidably sleeved on the positioning rods, a first fixed block fixedly sleeved on the positioning rods is arranged on one side, away from the corresponding elastic air bags, of each movable plate, a second spring is fixedly installed between one side, close to the corresponding elastic air bags, of each first fixed block and the corresponding movable plate, and the second springs are movably sleeved on the positioning rods;
the locking mechanism comprises a mounting groove arranged on the right side of the top of the rectangular frame, the front side, the rear side and the right side of the mounting groove are respectively provided with an opening, the bottom of a support plate positioned on the right side is fixedly provided with a second fixed block, the bottom of the second fixed block extends into the mounting groove and is movably contacted with the inner wall of the bottom of the mounting groove, the inner wall of the left side of the mounting groove is provided with a clamping groove, a clamping block is movably clamped in the clamping groove, one side of the second fixed block is provided with a mounting hole, the left side of the clamping block is provided with a conical structure, the right side of the clamping block extends into the mounting hole, an electric telescopic rod is fixedly arranged between the inner wall of the top of the mounting hole and the inner wall of the bottom, the left end of an output shaft of the electric telescopic rod is fixedly connected with the right side of the clamping block, a storage battery is fixedly arranged on the inner wall of the top of the mounting hole, a single chip microcomputer and a wireless remote control switch are fixedly arranged on the right side of the storage battery, and a limiting block is fixedly arranged on one side of the top of the second fixed block, the bottom of the limiting block is movably contacted with one side of the top of the cover plate.
Preferably, electric telescopic handle and singlechip all with battery electric connection, singlechip and electric telescopic handle and wireless remote control switch electric connection, wireless remote control switch matches and is provided with outside remote controller.
Preferably, the rotation groove that front side, rear side and left side were the opening setting is seted up in the top left side of returning the shape frame, and fixed mounting has two installation pieces on the bottom inner wall in rotation groove, and the circular port has been seted up to the front side of installation piece, and the circular port internal fixation cover is equipped with the bearing, and the inner circle internal fixation cover of two bearings is equipped with same pivot, and the front side that is located left backup pad has been seted up and has been perforated, the outside fixed connection of fenestrate inner wall and pivot.
Preferably, a first rectangular hole is formed in one side of the moving plate, and the inner wall of the first rectangular hole is in sliding connection with the outer side of the positioning rod.
Preferably, two second rectangular holes are formed in the top of the protection plate, and the inner walls of the second rectangular holes are in sliding connection with the outer sides of the corresponding support plates.
Preferably, the outer side of the clamping block is movably contacted with the inner wall of the mounting hole.
Compared with the prior art, the beneficial effects of the utility model are that:
through the connecting rod, the clip frame, the cover plate, the positioning rod, the mounting ring, the protection plate, the first groove, the support plate, the elastic air bag, the first spring, the movable plate, the first fixed block, the second spring, the second fixed block, the mounting groove, the clamping groove, the limiting block, the clamping block, the mounting hole, the electric telescopic rod and the storage battery are matched with the single chip microcomputer, when an object drops to a high degree, the protection plate is firstly impacted, the force of the impact drives the protection plate to slide downwards on the two support plates and compress the two elastic air bags, so that the elastic air bags deform and compress the corresponding first springs, and the movable plates on the two sides are extruded, so that the movable plates slide on the positioning rod and compress the second springs, under the action of the elastic force of the first springs, the elastic force of the elastic air bags and the elastic force of the second springs, the impact force of the object dropping to a high degree is relieved, when the cover plate needs to be opened, the electric telescopic rod is controlled by an external remote controller to be started reversely, the output shaft of the electric telescopic rod drives the clamping block to move out of the clamping groove rightwards, then the protection plate is rotated upwards to drive the second fixing block to rotate out of the mounting groove through the supporting plate on the right side, the second fixing block drives the limiting block to rotate upwards and remove the shielding of the cover plate, when the buffering protection mechanism rotates to one side of the square-shaped frame, the T-shaped pull head is pulled to rotate the cover plate out of the square-shaped frame, when the cover plate needs to be rotated for fixing, the cover plate is rotated downwards to be contacted with the top of the supporting block, the buffer protection mechanism is rotated, make the backup pad on right side drive the second fixed block and rotate to the mounting groove in, the second fixed block drives the stopper and rotates to contacting with top one side of apron, starts electric telescopic handle immediately the forward and drives the fixture block and remove to the draw-in groove in, and then makes buffering protection machanism and apron fixed.
The utility model relates to a rationally, be convenient for alleviate the hard impact force that the eminence dropped the object, reduce the damage risk because of the impact force is great causes, and be convenient for realize the fixed and unblock of buffering protection machanism and apron fast through wireless remote control's mode, make things convenient for personnel to operate, and wireless remote control's mode can reduce the risk that irrelevant personnel opened, satisfy the user demand.
Drawings
Fig. 1 is a schematic sectional structural view of a safety protection device for well control pressure testing provided by the present invention;
fig. 2 is an enlarged schematic view of a portion a in fig. 1.
In the figure: 100 connecting rods, 101 rectangular frames, 102 cover plates, 1 positioning rod, 2 mounting rings, 3 protection plates, 4 first grooves, 5 supporting plates, 6 elastic air bags, 7 first springs, 8 moving plates, 9 first fixing blocks, 10 second springs, 11 second fixing blocks, 12 mounting grooves, 13 clamping grooves, 14 limiting blocks, 15 clamping blocks, 16 mounting holes, 17 electric telescopic rods, 18 storage batteries and 19 single-chip microcomputers.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a safety device for well control pressure test comprises a safety device body, the safety device body comprises two connecting rods 100, a clip frame 101 fixed at the top ends of the two connecting rods 100, and a housing fixed at the bottom ends of the two connecting rods 100, four sides of the clip frame 101 are all fixedly provided with a mounting ring 2, a cover plate 102 is rotatably mounted on the inner wall of the left side of the clip frame 101, the right side of the cover plate 102 is provided with an arc-shaped structure, the top of the cover plate 102 is fixedly provided with a T-shaped pull head, the inner wall of the right side of the clip frame 101 is fixedly provided with a support block, the top of the support block is movably contacted with one side of the bottom of the cover plate 102, the top of the clip frame 101 is provided with a buffer protection mechanism and a locking mechanism matched with the buffer protection mechanism, the buffer protection mechanism comprises two support plates 5 arranged at the top of the clip frame 101, the two support plates 5 are slidably sleeved with a same protection plate 3, the anti-falling block is fixedly arranged at the top of the supporting plate 5, the supporting plate 5 positioned at the left side in the two supporting plates 5 is rotatably arranged at the top of the left side of the square-shaped frame 101, the same positioning rod 1 is fixedly arranged between the two supporting plates 5, the bottom of the protection plate 3 is provided with two first grooves 4 with openings at the front side and the rear side, an elastic airbag 6 is fixedly bonded between the inner wall of the top of the first groove 4 and the top of the positioning rod 1, a first spring 7 is fixedly arranged between the inner wall of the top and the inner wall of the bottom of the elastic airbag 6, both sides of the elastic airbag 6 are movably contacted with a movable plate 8, the movable plate 8 is slidably sleeved on the positioning rod 1, one side of the movable plate 8 away from the corresponding elastic airbag 6 is provided with a first fixed block 9 fixedly sleeved on the positioning rod 1, and a second spring 10 is fixedly arranged between one side of the first fixed block 9 close to the corresponding elastic airbag 6 and the movable plate 8, the second spring 10 is movably sleeved on the positioning rod 1;
the locking mechanism comprises a mounting groove 12 arranged on the right side of the top of the rectangular frame 101, the front side, the rear side and the right side of the mounting groove 12 are provided with openings, the bottom of a supporting plate 5 positioned on the right side is fixedly provided with a second fixing block 11, the bottom of the second fixing block 11 extends into the mounting groove 12 and is movably contacted with the inner wall of the bottom of the mounting groove 12, the inner wall of the left side of the mounting groove 12 is provided with a clamping groove 13, a clamping block 15 is movably clamped in the clamping groove 13, one side of the second fixing block 11 is provided with a mounting hole 16, the left side of the clamping block 15 is provided with a conical structure, the right side of the clamping block 15 extends into the mounting hole 16, an electric telescopic rod 17 is fixedly arranged between the inner wall of the top and the inner wall of the bottom of the mounting hole 16, the left end of an output shaft of the electric telescopic rod 17 is fixedly connected with the right side of the clamping block 15, the inner wall of the top of the mounting hole 16 is fixedly provided with a storage battery 18, the right side of the storage battery 18 is fixedly provided with a single chip microcomputer 19 and a wireless remote control switch, top one side fixed mounting of second fixed block 11 has stopper 14, stopper 14's bottom and apron 102's top one side movable contact, the utility model relates to a rationally, be convenient for alleviate the hard impact force that the eminence dropped the object, reduce the damage risk because of the impact force is great causes, and be convenient for realize buffering protection machanism and apron 102's fixed and unblock fast through wireless remote control's mode, make things convenient for personnel to operate, and wireless remote control's mode can reduce the risk that irrelevant personnel opened, satisfies the user demand.
In the utility model, the electric telescopic rod 17 and the single chip microcomputer 19 are both electrically connected with the storage battery 18, the single chip microcomputer 19 is electrically connected with the electric telescopic rod 17 and the wireless remote control switch, the wireless remote control switch is provided with an external remote controller in a matching way, the left side of the top of the clip frame 101 is provided with a rotating groove with an opening at the front side and the rear side and the left side, two installation sheets are fixedly installed on the inner wall of the bottom of the rotating groove, a circular hole is arranged at the front side of the installation sheet, a bearing is fixedly sleeved in the circular hole, the inner ring inner fixing sleeves of the two bearings are provided with the same rotating shaft, a perforation is arranged at the front side of the supporting plate 5 at the left side, the perforated inner wall is fixedly connected with the outer side of the rotating shaft, one side of the moving plate 8 is provided with a first rectangular hole, the inner wall of the first rectangular hole is slidably connected with the outer side of the positioning rod 1, the top of the protection plate 3 is provided with two second rectangular holes, the inner wall of the second rectangular hole is slidably connected with the outer side of the corresponding supporting plate 5, the outside of fixture block 15 and the inner wall movable contact of mounting hole 16, the utility model relates to a rationally, be convenient for alleviate the rigid impact force that the eminence dropped the object, reduce because of the great damage risk that causes of impact force, and be convenient for realize buffering protection machanism and apron 102's fixed and unblock fast through wireless remote control's mode, make things convenient for personnel to operate, and wireless remote control's mode can reduce the risk that irrelevant personnel opened, satisfy the user demand.
The working principle is as follows: when the device is used, when an object with a high falling height collides the protection plate 3, the protection plate 3 is driven to move downwards by the force of the collision, the protection plate 3 slides downwards on the two support plates 5, the two elastic air bags 6 are compressed downwards by the protection plate 3, so that the elastic air bags 6 deform, the corresponding first springs 7 are compressed by the deformed elastic air bags 6, and meanwhile, the two sides of the elastic air bags 6 extrude the moving plates 8 at the two sides, so that the moving plates 8 slide on the positioning rod 1 and compress the second springs 10, under the action of the elastic force of the first springs 7, the elastic force of the elastic air bags 6 and the elastic force of the second springs 10, the impact force of the object with a high falling height is relieved, and the damage risk caused by the large impact force is reduced;
when the cover plate 102 needs to be lifted, the single chip microcomputer 19 is controlled through an external remote controller to control the electric telescopic rod 17 to be reversely started, the output shaft of the electric telescopic rod 17 drives the clamping block 15 to move out of the clamping groove 13 rightwards, further the fixation of the buffering protection mechanism is removed, then the protection plate 3 is rotated upwards, the protection plate 3 drives the support plate 5 on the left side to rotate in the rotating groove, the protection plate 3 drives the support plate 5 on the right side to rotate upwards, the support plate 5 on the right side drives the second fixing block 11 to rotate out of the mounting groove 12, the second fixing block 11 drives the limiting block 14 to rotate upwards and remove the shielding of the cover plate 102, when the buffering protection mechanism rotates to one side of the square frame 101, the protection plate 3 stops rotating, then the T-shaped pull head is pulled to drive the cover plate 102 to rotate upwards, the cover plate 102 gradually rotates out of the square frame 101, and when the rotary cover plate 102 needs to be fixed, downwardly rotating apron 102, apron 102 rotates when contacting with the top of supporting shoe, gyration buffering protection mechanism, make the backup pad 5 on right side drive second fixed block 11 rotate to mounting groove 12 in, second fixed block 11 drives stopper 14 and rotates to contacting with top one side of apron 102, start electric telescopic handle 17 next to the forward, electric telescopic handle 17's output shaft drives fixture block 15 and removes to draw-in groove 13 in, fixture block 15 clamps with draw-in groove 13 mutually, and then make buffering protection mechanism and apron 102 fixed, make and realize fixing and the unblock to buffering protection mechanism and apron 102 through wireless remote control's mode be convenient for, make things convenient for personnel to operate, and wireless remote control's mode can reduce the risk that irrelevant personnel opened.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A safety device for well control pressure test comprises a safety device body, wherein the safety device body comprises two connecting rods (100), a clip-shaped frame (101) fixed at the top ends of the two connecting rods (100) and a shell fixed at the bottom ends of the two connecting rods (100), four sides of the clip-shaped frame (101) are fixedly provided with mounting rings (2), the safety device is characterized in that a cover plate (102) is rotatably arranged on the inner wall of the left side of the clip-shaped frame (101), the right side of the cover plate (102) is of an arc-shaped structure, a T-shaped pull head is fixedly arranged at the top of the cover plate (102), a supporting block is fixedly arranged on the inner wall of the right side of the clip-shaped frame (101), the top of the supporting block is in movable contact with one side of the bottom of the cover plate (102), the top of the clip-shaped frame (101) is provided with a buffer protection mechanism and a locking mechanism matched with the buffer protection mechanism, the buffer protection mechanism comprises two supporting plates (5) arranged at the top of the clip-shaped frame (101), sliding sleeve is equipped with same guard plate (3) on two backup pads (5), the top fixed mounting of backup pad (5) has the anticreep piece, lie in left backup pad (5) and rotate and install the left side top of returning shape frame (101) in two backup pads (5), fixed mounting has same locating lever (1) between two backup pads (5), first groove (4) that two fronts and rear side were the opening setting are seted up to the bottom of guard plate (3), it is fixed with elastic air bag (6) to bond between the top inner wall of first groove (4) and the top of locating lever (1), fixed mounting has first spring (7) between the top inner wall of elastic air bag (6) and the bottom inner wall, the equal movable contact in both sides of elastic air bag (6) has movable plate (8), movable plate (8) sliding sleeve is established on locating lever (1), one side that corresponding elastic air bag (6) was kept away from to movable plate (8) is equipped with the first fixed block(s) of fixed cover establishment on locating lever (1), (the fixed block (8) 9) A second spring (10) is fixedly arranged between one side of the first fixed block (9) close to the corresponding elastic air bag (6) and the moving plate (8), and the second spring (10) is movably sleeved on the positioning rod (1);
the locking mechanism comprises a mounting groove (12) arranged on the right side of the top of the rectangular frame (101), the front side, the rear side and the right side of the mounting groove (12) are provided with openings, the bottom of a supporting plate (5) positioned on the right side is fixedly provided with a second fixing block (11), the bottom of the second fixing block (11) extends into the mounting groove (12) and is in movable contact with the inner wall of the bottom of the mounting groove (12), the inner wall of the left side of the mounting groove (12) is provided with a clamping groove (13), a clamping block (15) is movably clamped in the clamping groove (13), one side of the second fixing block (11) is provided with a mounting hole (16), the left side of the clamping block (15) is provided with a conical structure, the right side of the clamping block (15) extends into the mounting hole (16), an electric telescopic rod (17) is fixedly arranged between the inner wall of the top and the inner wall of the bottom of the mounting hole (16), the left end of an output shaft of the electric telescopic rod (17) is fixedly connected with the right side of the clamping block (15), a storage battery (18) is fixedly mounted on the inner wall of the top of the mounting hole (16), a single chip microcomputer (19) and a wireless remote control switch are fixedly mounted on the right side of the storage battery (18), a limiting block (14) is fixedly mounted on one side of the top of the second fixing block (11), and the bottom of the limiting block (14) is in movable contact with one side of the top of the cover plate (102).
2. The safety protection device for well control pressure test according to claim 1, wherein the electric telescopic rod (17) and the single chip microcomputer (19) are both electrically connected with the storage battery (18), the single chip microcomputer (19) is electrically connected with the electric telescopic rod (17) and the wireless remote control switch, and the wireless remote control switch is provided with an external remote controller in a matching manner.
3. The safety protection device for well control pressure test according to claim 1, wherein a rotating groove with an opening on the front side, the rear side and the left side is formed in the left side of the top of the square frame (101), two mounting pieces are fixedly mounted on the inner wall of the bottom of the rotating groove, a circular hole is formed in the front side of each mounting piece, a bearing is fixedly sleeved in each circular hole, the same rotating shaft is fixedly sleeved in the inner ring of each bearing, a through hole is formed in the front side of the supporting plate (5) on the left side, and the inner wall of each through hole is fixedly connected with the outer side of the corresponding rotating shaft.
4. The safety protection device for well control pressure test according to claim 1, wherein a first rectangular hole is formed in one side of the moving plate (8), and the inner wall of the first rectangular hole is slidably connected with the outer side of the positioning rod (1).
5. The safety protection device for well control and pressure test according to claim 1, wherein two second rectangular holes are formed in the top of the protection plate (3), and the inner walls of the second rectangular holes are slidably connected with the outer sides of the corresponding support plates (5).
6. The safety protection device for well control pressure test is characterized in that the outer side of the fixture block (15) is in movable contact with the inner wall of the installation hole (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120110970.2U CN214248124U (en) | 2021-01-15 | 2021-01-15 | Safety protection device for well control pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120110970.2U CN214248124U (en) | 2021-01-15 | 2021-01-15 | Safety protection device for well control pressure test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214248124U true CN214248124U (en) | 2021-09-21 |
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ID=77726160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120110970.2U Expired - Fee Related CN214248124U (en) | 2021-01-15 | 2021-01-15 | Safety protection device for well control pressure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214248124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118531840A (en) * | 2024-07-23 | 2024-08-23 | 晋城市华顺鑫铸业股份有限公司 | Nodular cast iron well lid with prevent function of falling |
-
2021
- 2021-01-15 CN CN202120110970.2U patent/CN214248124U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118531840A (en) * | 2024-07-23 | 2024-08-23 | 晋城市华顺鑫铸业股份有限公司 | Nodular cast iron well lid with prevent function of falling |
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Granted publication date: 20210921 |