CN212455516U - Low-power low-power-consumption emergency cut-off device - Google Patents
Low-power low-power-consumption emergency cut-off device Download PDFInfo
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- CN212455516U CN212455516U CN202021852496.2U CN202021852496U CN212455516U CN 212455516 U CN212455516 U CN 212455516U CN 202021852496 U CN202021852496 U CN 202021852496U CN 212455516 U CN212455516 U CN 212455516U
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- screw nut
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Abstract
The utility model discloses a device is promptly cut to low power consumption, valve body and valve gap pass through high strength bolted connection, and threaded connection is passed through on the valve cap to the top cap, and threaded connection is passed through on the top cap to the upper cover. The mounting plate passes through the screw connection on the upper cover, the motor passes explosion-proof case and connects on the mounting plate, pinion connection is on the motor shaft, screw nut passes upper cover and gear wheel connection through the bearing, it is fixed to use lock nut, handle nut passes through the second key and is connected with screw nut, the lead screw protects the cap and is connected with screw nut, the guard shield is connected with the mounting plate, the lead screw is connected with the sliding sleeve through preventing changeing the support, the valve rod passes the sliding sleeve and is connected with the slider, the top cap is connected with the disk seat through hanging the core, it is connected with the lock cap to close the. The utility model discloses not only can carry out remote switch control under the electrified condition, also can surpass the automatic shutoff under the sudden pressure boost of setting value or upper reaches pipeline, the sudden pressure loss condition of pipeline of low reaches at pipeline pressure, reach the purpose of protection natural gas-supply line.
Description
Technical Field
The utility model relates to a safe operation field of natural gas-supply line, concretely relates to low-power low power consumption promptly cuts device.
Background
A large number of natural gas producing areas in China are mostly in deserts, wastelands and mountains, so that great difficulties exist in well patrol and management, the quality of needed workers is high, the cost is increased year by year, and the digital management of natural gas wells becomes a great trend for solving the problem. At present, although a remote switch can be realized by an emergency cut-off device installed on site, the required power of a power supply is high, once a solar panel loses power or the voltage is reduced, the whole gas transmission line is completely paralyzed in control, and the effect of protecting the gas transmission line cannot be realized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low power consumptive urgent device that cuts of miniwatt to overcome prior art's defect, the utility model discloses not only can carry out remote switch control under the electrified condition, also can cut automatically when pipeline pressure surpasss the sudden pressure boost of setting value or upper reaches pipeline, the sudden pressure loss of downstream pipeline under the electroless condition, reach the purpose of protection natural gas supply line.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a low-power-consumption emergency cut-off device comprises a valve body, wherein the high-pressure end of the valve body is connected with an upstream pipeline of a gas transmission pipeline, the low-pressure end of the valve body is connected with a downstream pipeline of the gas transmission pipeline, a valve cover is connected onto the valve body, a top cover is connected onto the valve cover, an upper cover is connected onto the top cover and is connected with an installation bottom plate, a motor is connected onto the installation bottom plate, a lead screw nut is inserted into the upper cover through a bearing, an output shaft of the motor is connected with a pinion through a first key, the pinion is meshed with a gearwheel connected onto the lead screw nut, the gearwheel and the lead screw nut are connected through keys and fixed by a locking nut, a lead screw matched with the lead screw nut is inserted into the lead screw nut, the bottom of the lead screw is connected to a sliding sleeve through an anti-rotation support, a sliding block is arranged in the sliding sleeve and is, the closing valve core is located on the inner side of the suspension core, a spring is arranged in the valve seat, a locking cap matched with the valve rod is arranged on the upper portion of the closing valve core, a detection port is formed in the side wall of the top cover, a high-pressure stop valve is connected to the detection port, and a pressure sensor is arranged on the detection port and between the detection port and the high-pressure stop valve.
Further, the motor passes through the explosion-proof box and is connected on the mounting base plate.
Further, the outer side of the screw rod nut is connected with a handle nut through a second key.
Further, the top of the screw nut is connected with a screw protective cap.
Further, the valve cover is connected with the valve body through a plurality of high-strength bolts, and a sealing gasket ring is arranged at the joint of the valve cover and the valve body.
Furthermore, a shield which can protect the large gear and the small gear is connected to the mounting bottom plate.
Furthermore, a first sealing ring is arranged at the position, where the valve rod penetrates through the top cover, of the valve rod, a second sealing ring is arranged at the joint of the top cover and the valve cover, a third sealing ring is arranged at the joint of the valve seat and the valve body, a fourth sealing ring matched with the valve seat is arranged on the closing valve core, and a fifth sealing ring matched with the closing valve core is arranged at the lower end of the valve rod.
Compared with the prior art, the utility model discloses following profitable technological effect has:
when the pipeline cutting device is used, when the pipeline needs to be cut off, a program gives a command to the motor, the motor rotates to drive the pinion, the gear wheel and the lead screw nut to rotate, the lead screw moves downwards, the valve rod is pushed, the valve core is closed to move downwards to the valve seat, the valve core is closed to be sealed with the valve seat, and the pipeline is cut off; when the pressure sensor detects that the line pressure exceeds or falls below the set value, the program will automatically command the motor to perform a valve closing action. When the upstream pipeline is suddenly pressurized or the downstream pipeline is suddenly decompressed, the action of a motor is not needed, the sliding block moves downwards in the sliding sleeve to drive the valve rod and the closing valve core to move downwards to the valve, the valve core and the valve seat are closed to seal, and the pipeline is cut off. The utility model discloses not only can carry out remote switch control under the electrified condition, also can surpass the automatic shutoff under the sudden pressure boost of setting value or upper reaches pipeline, the sudden pressure loss condition of pipeline of low reaches at pipeline pressure, reach the purpose of protection natural gas-supply line.
In addition, when the cut-off device needs to be opened to restore the pipeline, a program gives a command to the motor, the motor rotates to drive the pinion, the gearwheel and the screw nut to rotate, the screw moves upwards to pull the valve rod and the closing valve core to move upwards to a certain distance away from the valve seat, the seal on the closing valve core is separated from the valve seat, and the pipeline airflow channel is opened. In the process, the key point is that secondary lifting is used when the valve core is lifted and closed, when the motor pulls the valve rod to move upwards, the seal between the valve rod and the valve core is firstly pulled open, so that the upstream and downstream air flows open a small channel, after the pressure of the pipeline is balanced for a period of time, the valve core is lifted and closed for the second time, so that the seal between the valve core and the valve seat is separated, the use power of the motor is greatly reduced in the process, the sealing ring at the lower end of the valve rod can be separated from the valve core to close the valve core under the low voltage and the low power, the small air flow channel is formed firstly, and.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1, a motor; 2. an explosion-proof box; 3. mounting a bottom plate; 4. a shield; 5. a pinion gear; 6. a first key; 7. a bull gear; 8. locking the nut; 9. a handle nut; 10. a lead screw cap; 11. a lead screw; 12. a lead screw nut; 13. a second key; 14. a bearing; 15. an upper cover; 16. an anti-rotation bracket; 17. a sliding sleeve; 18. a slider; 19. a pressure sensor; 20. a high pressure stop valve; 21. a first seal ring; 22. a top cover; 23. a second seal ring; 24. a valve stem; 25. a valve cover; 26. a third seal ring; 27. a valve body; 28. a valve seat; 29. a spring; 30. a sealing gasket ring; 31. a suspension core; 32. a high strength bolt; 33. a fourth seal ring; 34. closing the valve core; 35. a locking cap; 36. and a fifth sealing ring.
Detailed Description
The invention will be described in further detail with reference to the following drawings and specific embodiments:
the emergency cut-off device with low power and low power consumption can work under the condition of small voltage or no electricity, and the left high-voltage end of the emergency cut-off device is connected with the upstream pipeline of a gas pipeline, and the right low-voltage end of the emergency cut-off device is connected with the downstream pipeline of the gas pipeline. A sealing gasket ring 30 is arranged between the valve body 27 and the valve cover 25 and connected through 10 high-strength bolts 32, the top cover 22 is connected to the valve cover 25 through threads, a second sealing ring 23 is arranged between the top cover 22 and the valve body, and the upper cover 15 is connected to the top cover 22 through threads. Mounting plate 3 passes through the screw connection on upper cover 15, and motor 1 passes explosion-proof box 2 and connects on mounting plate 3, and pinion 5 connects at motor 1 epaxially, and screw nut 12 passes upper cover 15 through bearing 14 and is connected with gear wheel 7, uses lock nut 8 fixed, and handle nut 9 passes through second key 13 and is connected with screw nut 12, and screw helmet 10 is connected with screw nut 12, and guard shield 4 is connected with mounting plate 3. The screw rod 11 is connected with the sliding sleeve 17 through the anti-rotation support 16, the valve rod 24 penetrates through the sliding sleeve 17 to be connected with the sliding block 18, a first sealing ring 21 is arranged between the valve rod 24 and the top cover 22, the top cover 22 is connected with the valve seat 28 through the suspension core 31, and the closing valve core 34 is connected with the locking cap 35.
During normal production, the cut-off device is in an open state, a certain distance exists between a sealing surface of the closed valve core 34 and the valve seat 28, pipeline gas enters the valve cover 25 through the high-pressure end of the valve body 27, and enters the low-pressure end through the hanging core 31 and the side hole of the closed valve core 34 to form an airflow channel.
When the pipeline needs to be cut off, a program gives a command to the motor 1, the motor 1 rotates to drive the pinion 5, the gearwheel 7 and the screw nut 12 to rotate, the screw 11 moves downwards, the valve rod 24 is pushed, the closing valve core 34 moves downwards to the valve seat 28, the fourth sealing ring 33 on the closing valve core 34 is sealed with the valve seat 28, and the pipeline is cut off.
When the pressure sensor 19 detects that the line pressure exceeds or falls below the set value, the program automatically commands the motor 1 to perform a valve closing action.
When the upstream pipeline is suddenly pressurized or the downstream pipeline is suddenly depressurized, the sliding block 18 moves downwards in the sliding sleeve 17 without the action of the motor 1, drives the valve rod 24 and the closing valve core 34 to move downwards to the valve seat 28, seals the fourth sealing ring 33 on the closing valve core 34 with the valve seat 28, and cuts off the pipeline. In the process, the key point is that when the pipeline normally conducts gas, a certain free stroke is left between the sliding block 18 and the sliding sleeve 17, the valve rod 24 and the closing valve core 34 are in a suspension static balance state under the action of air pressure, and when the pipeline pressure fluctuation is large, the sliding block 18 can drive the valve rod 24 and the closing valve core 34 to move downwards to the valve seat 28.
When a pipeline in a cut-off state needs to be opened and the cut-off device recovers the pipeline, a program gives a command to the motor 1, the motor 1 rotates to drive the pinion 5, the gearwheel 7 and the screw nut 12 to rotate, the screw 11 moves upwards to pull the valve rod 24 and the closing valve core 34 to move upwards to a certain distance away from the valve seat 28, the fourth sealing ring 33 on the closing valve core 34 is separated from the valve seat 28, and an airflow channel of the pipeline is opened. In the process, the key point is that secondary lifting is used when the closing valve core 34 is lifted, when the motor 1 pulls the valve rod 24 to move upwards, the fifth sealing ring 36 between the valve rod 24 and the closing valve core 34 is firstly pulled open, so that a small channel is opened by upstream and downstream air flows, after the pipeline pressure is balanced for a period of time, the closing valve core 34 is lifted for the second time, so that the fourth sealing ring 33 between the closing valve core 34 and the valve seat 28 is separated, the using power of the motor 1 is greatly reduced in the process, the fifth sealing ring 36 at the lower end of the valve rod 24 can be separated from the closing valve core 34 by small voltage and low power, a small air flow channel is formed firstly, and the closing valve core 34 can be lifted.
Claims (7)
1. The device is characterized by comprising a valve body (27), wherein the high-pressure end of the valve body (27) is connected with an upstream pipeline of a gas transmission pipeline, the low-pressure end of the valve body (27) is connected with a downstream pipeline of the gas transmission pipeline, a valve cover (25) is connected on the valve body (27), a top cover (22) is connected on the valve cover (25), an upper cover (15) is connected on the top cover (22), an installation bottom plate (3) is connected on the upper cover (15), a motor (1) is connected on the installation bottom plate (3), a screw nut (12) is inserted on the upper cover (15) through a bearing (14), an output shaft of the motor (1) is connected with a pinion (5) through a first key (6), the pinion (5) is meshed with a gear wheel (7) connected on the screw nut (12), the gear wheel (7) and the screw nut (12) are connected through keys and fixed through a locking nut (8), lead screw nut (12) inside is worn to insert rather than complex lead screw (11), lead screw (11) bottom is connected to sliding sleeve (17) through preventing changeing support (16), be provided with slider (18) in sliding sleeve (17), slider (18) are connected with valve rod (24) of interlude on sliding sleeve (17), the lower part of valve rod (24) is passed top cap (22) and is connected to and closes case (34), the lower part of top cap (22) is connected to disk seat (28) of setting in valve body (27) through hanging core (31), it is inboard to close case (34) to be located hanging core (31), be provided with spring (29) in disk seat (28), it is provided with locking cap (35) with valve rod (24) complex to close case (34) upper portion, the detection mouth has been seted up to the lateral wall of top cap (22), be connected with high pressure stop valve (20) on the detection mouth, be provided with pressure sensor (19) on the detection mouth and.
2. A low power and low power consumption emergency cut-off device according to claim 1, wherein the motor (1) is connected to the mounting base plate (3) through the explosion-proof box (2).
3. A low power and low power consumption emergency cut-off device according to claim 1, wherein the handle nut (9) is connected to the outside of the screw nut (12) through a second key (13).
4. A low power and low power consumption emergency cut-off device according to claim 1, wherein a screw cap (10) is connected to the top of the screw nut (12).
5. A small power low power consumption emergency cut-off device according to claim 1, wherein the valve cover (25) is connected with the valve body (27) by a plurality of high strength bolts (32), and a sealing gasket ring (30) is arranged at the connection of the valve cover (25) and the valve body (27).
6. A small power and low power consumption emergency cut-off device according to claim 1, wherein a shield (4) capable of protecting the large gear (7) and the small gear (5) is connected to the mounting base plate (3).
7. The emergency cut-off device with low power consumption according to claim 1, wherein a first sealing ring (21) is arranged at a position where the valve rod (24) penetrates through the top cover (22), a second sealing ring (23) is arranged at a joint of the top cover (22) and the valve cover (25), a third sealing ring (26) is arranged at a joint of the valve seat (28) and the valve body (27), a fourth sealing ring (33) matched with the valve seat (28) is arranged on the closing valve core (34), and a fifth sealing ring (36) matched with the closing valve core (34) is arranged at the lower end of the valve rod (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852496.2U CN212455516U (en) | 2020-08-28 | 2020-08-28 | Low-power low-power-consumption emergency cut-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852496.2U CN212455516U (en) | 2020-08-28 | 2020-08-28 | Low-power low-power-consumption emergency cut-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212455516U true CN212455516U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021852496.2U Active CN212455516U (en) | 2020-08-28 | 2020-08-28 | Low-power low-power-consumption emergency cut-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212455516U (en) |
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2020
- 2020-08-28 CN CN202021852496.2U patent/CN212455516U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210902 Address after: 710065 room 11111, unit 1, building 1, building B, metropolitan gate, No. 1, Jinye Road, high tech Zone, Xi'an, Shaanxi Province Patentee after: XI'AN DONGXIN PETROLEUM EQUIPMENT PLANT Co.,Ltd. Address before: Room 11110, block B, city gate, No.1 Jinye Road, Zhangba Street office, high tech Zone, Xi'an City, Shaanxi Province, 710075 Patentee before: Xi'an Jiude Chuangyi Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |