Gas extraction well mouth safety protection equipment

Abstract

The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application discloses a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well safety protection. The application disclosing a gas extraction well hole opening safety protection equipment and relates to the technical field of gas extraction well

Description

Technical Field

[0001] This invention relates to the field of safety protection technology for gas extraction wells, specifically a safety protection device for the orifice of a gas extraction well. Background Technology

[0002] Coal mine gas, also known as coalbed methane, is a hydrocarbon gas found in coal seams. Like natural gas, its main component is methane. Methane is a flammable and explosive gas that poses a significant threat to safe production in coal mines. However, it is also a high-quality and clean energy source, and its utilization can increase energy supply.

[0003] However, in actual use, the outer side of the top of the wellhead will be subjected to pressure of varying forces due to construction. Under such circumstances, the protective plate will be subjected to expansion force from the inner wall of the wellhead. Traditional protective equipment cannot detect and alarm the pressure on the outer side of the wellhead. In this case, when the external pressure is too great, it may affect the protective effect of the wellhead protective equipment and cause compression and collapse. Summary of the Invention

[0004] This invention provides a safety protection device for the orifice of a gas extraction well, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A safety protection device for the orifice of a gas extraction well includes an installation ring and a protective mechanism. The protective mechanism includes a safety plate fixedly installed at the bottom of the installation ring. An installation arm is fixedly connected to the outer wall of the safety plate. A positioning rod is threaded through the installation arm. During actual installation, the operator contacts the installation arm with the ground and then rotates the positioning rod to install the installation on the ground outside the wellhead. A protective cloth is installed between the safety plates. A limiting rod is installed on one side of the protective plate. A sensing component is installed on the limiting rod, and the sensing component is correspondingly installed with the protective cloth.

[0007] The sensing component is provided with sensing cylinders on both sides, and the sensing cylinders are fixedly connected to the safety plate. The sensing cylinders are provided with telescopic components, and the telescopic components are connected to the sensing component. The mounting ring is provided with a bearing plate, and a bearing arm is fixedly connected between the bearing plate and the mounting ring. A pneumatic component is provided on the bearing arm. An air supply pump is fixedly connected to the bearing plate. The output end of the air supply pump is connected to the air guide cylinder. An air guide plate is fixedly connected to the top of the air guide cylinder. A guide groove is opened on the air guide plate, and the guide groove is connected to the air guide cylinder.

[0008] An alarm component is installed on the air guide plate, and the alarm component is correspondingly installed with the pneumatic component. The protective cloth is a stretchable material. When the soil inside the wellhead expands outward, it will squeeze the protective cloth to one side, which will in turn drive the sensing component on one side to move to one side. The sensing component will drive the telescopic component inside the sensing cylinder to move. The telescopic component compresses the air inside the sensing cylinder, increasing the pressure inside the sensing cylinder, which in turn drives the pneumatic component on the bearing arm to extend and retract. The pneumatic component contacts the alarm component, and under the action of the air supply pump, the gas is sent to the guide channel through the air guide cylinder. Under the action of the alarm component, an alarm is triggered. After receiving the alarm information, the construction personnel can perform operations to reinforce the wellhead or reduce the edge pressure according to the alarm information.

[0009] As a preferred embodiment of the present invention, the sensing component includes a guide post that is slidably disposed on a limiting rod, a sensing rod that is fixedly connected to the end of the guide post, and transmission rods that are hinged to both ends of the guide post. By setting a sensing rod on one side of the protective cloth, the sensing rod can promptly sense and transmit information about the expansion of the soil on the inner wall of the wellhead on one side of the protective cloth, and promptly transmit this information to improve the safety protection effect.

[0010] As a preferred embodiment of the present invention, the telescopic component includes a reset member fixedly disposed inside the induction cylinder, a movable block fixedly connected to one side of the reset member, the movable block being slidably disposed inside the induction cylinder, a piston column fixedly connected to the end of the movable block, and the two ends of the piston column being hinged to the transmission rod. The reset member can be a spring or an elastic metal sheet with telescopic properties. When the movable block moves inside the induction cylinder, it can compress the air inside the induction cylinder, thereby increasing the pressure inside the induction cylinder.

[0011] As a preferred embodiment of the present invention, the pneumatic assembly includes a mounting cylinder fixedly mounted on a support arm, guide pipes fixedly connected to both sides of the mounting cylinder, an air transmission pipe communicating between the guide pipes and the sensing cylinder, a piston block slidably mounted inside the mounting cylinder, a telescopic column fixedly connected to the top of the piston block, a telescopic component sleeved on the telescopic column inside the mounting cylinder, and a fixed arm fixedly connected to the top of the telescopic column, wherein the telescopic component can be a spring or an elastic metal sheet with telescopic properties.

[0012] As a preferred embodiment of the present invention, the alarm component includes a valve rod that is slidably disposed on the air guide plate, a valve port being provided on the valve rod, a compression member being sleeved on one end of the valve rod, and a movable rod being fixedly connected to the bottom of the valve rod. The compression member can be a spring with telescopic properties or an elastic metal sheet, etc. The movable rod is correspondingly disposed with the fixed arm. When the fixed arm moves to the highest position, it can drive the valve rod above the movable rod to move, so that the valve port corresponds to the guide groove.

[0013] As a preferred embodiment of the present invention, a light-shielding cylinder is fixedly connected to the air guide plate above the valve stem, the valve stem extends into the light-shielding cylinder, and an indicator light is fixedly connected to the top. The side wall of the air guide plate is connected to a pneumatic alarm. The working principle of the pneumatic alarm can be a whistle. When a high-speed airflow passes through, the pneumatic alarm can emit a sound through the whistle, thereby playing the role of prompting an alarm.

[0014] This invention has the following advantages: During use, the device is placed inside the wellhead. The safety plate and protective cloth provide safety protection for the inner wall of the wellhead. In actual use, the induction cylinder is filled with gas to support the movable block. This gas, along with the piston rod and transmission rod, drives the induction rod at one end of the guide column to support one side of the protective cloth. When pressure occurs on the outer side of the wellhead top due to construction, it compresses the soil outside the wellhead. The soil on the inner wall of the wellhead experiences an outward expansion force. When this force is within the device's tolerance range, the induction rod will not move significantly, and the device will not trigger an alarm. However, if significant pressure occurs on the outer side of the wellhead top, the soil will expand to both sides. Due to the characteristics of the protective cloth, it will cause the induction rod to shift, and the induction rod will then be driven by the guide column... The pistons at both ends of the transmission rod move outwards, compressing the air inside the sensing cylinder and increasing the pressure. This increased pressure is then transmitted into the installation cylinder via the air transmission pipe. The piston block inside the installation cylinder drives the telescopic column upwards. The fixed arm at the top of the telescopic column contacts the movable rod, which in turn drives the valve rod upwards. The indicator light at the top of the valve rod moves out of the light-shielding cylinder, and simultaneously, the valve port on the valve rod connects with the guide groove. Gas enters the pneumatic alarm through the valve port and flows out, triggering an alarm sound. This indicates to the construction personnel that the pressure at the edge of the wellhead is too high, posing a safety hazard. The operator can then reinforce the wellhead or reduce the edge pressure based on the alarm information to ensure the safety of wellhead construction. Overall, this device provides timely alarm while protecting the inner wall of the wellhead, resulting in higher safety. Attached Figure Description

[0015] Figure 1 A schematic diagram of a safety protection device for the orifice of a gas extraction well. Figure 1 .

[0016] Figure 2 A schematic diagram of a safety protection device for the orifice of a gas extraction well. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the internal structure of a safety protection device for the orifice of a gas extraction well.

[0018] Figure 4 This is a schematic cross-sectional view of a safety protection device for the orifice of a gas extraction well.

[0019] Figure 5 for Figure 4 A magnified structural diagram of A in the middle.

[0020] Figure 6 This is a schematic diagram of a safety protection device for the orifice of a gas extraction well, viewed from below.

[0021] Figure 7 for Figure 6 A magnified structural diagram of B in the diagram.

[0022] In the diagram: 1. Mounting ring; 2. Protective cloth; 3. Mounting arm; 4. Positioning rod; 5. Safety plate; 6. Mounting cylinder; 7. Fixing arm; 8. Air guide plate; 9. Light shield; 10. Air guide cylinder; 11. Air pump; 12. Telescopic column; 13. Support plate; 14. Support arm; 15. Sensor cylinder; 16. Piston column; 17. Transmission rod; 18. Sensor rod; 19. Limiting rod; 20. Guide column; 21. Air transmission pipe; 22. Flow guide pipe; 23. Piston block; 24. Telescopic component; 25. Pneumatic alarm; 26. Movable block; 27. Reset component; 28. Movable rod; 29. ​​Indicator light; 30. Valve rod; 31. Valve port; 32. Flow guide groove; 33. Compression component; 34. Protective mechanism; 35. Sensor assembly; 36. Telescopic assembly; 37. Pneumatic assembly; 38. Alarm assembly. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] Please see Figures 1-7As an embodiment of the present invention: a safety protection device for the orifice of a gas extraction well includes an installation ring 1 and a protection mechanism 34. The protection mechanism 34 includes a safety plate 5 fixedly disposed at the bottom of the installation ring 1, a protective cloth 2 fixedly disposed between the safety plates 5, a limiting rod 19 disposed on one side of the protective plate, and a sensing component 35 disposed on the limiting rod 19, the sensing component 35 being correspondingly disposed with the protective cloth 2; sensing cylinders 15 are disposed on both sides of the sensing component 35, the sensing cylinders 15 being fixedly connected to the safety plate 5, and the two ends of the limiting rod 19 being fixedly connected to the sensing cylinders 15. An extension component 36 is provided inside the mounting ring 15, and the extension component 36 is connected to the sensing component 35; a support plate 13 is provided on the mounting ring 1, and a support arm 14 is fixedly connected between the support plate 13 and the mounting ring 1, and a pneumatic component 37 is provided on the support arm 14; an air supply pump 11 is fixedly connected to the support plate 13, and the output end of the air supply pump 11 is connected to the air guide cylinder 10. An air guide plate 8 is fixedly connected to the top of the air guide cylinder 10, and a guide groove 32 is opened on the air guide plate 8, which is connected to the air guide cylinder 10. An alarm component 38 is provided on the air guide plate 8, and the alarm component 38 is correspondingly provided with the pneumatic component 37.

[0025] The protective cloth 2 is a stretchable material. In actual use, when the soil inside the wellhead expands outward, it will squeeze the protective cloth 2 to one side, which will in turn drive the sensing component 35 on one side to move to one side. The sensing component 35 will drive the telescopic component 36 inside the sensing cylinder 15 to move. The telescopic component 36 compresses the air inside the sensing cylinder 15, increasing the pressure inside the sensing cylinder 15. This will then drive the pneumatic component 37 on the bearing arm 14 to extend and retract. The pneumatic component 37 contacts the alarm component 38. Under the action of the air supply pump 11, the gas is sent to the guide channel 32 through the air guide tube 10. Under the action of the alarm component 38, an alarm is triggered. After receiving the alarm information, the construction personnel will know that the pressure on the edge of the wellhead is too high and there will be a safety hazard. The operator can then reinforce the wellhead or reduce the edge pressure according to the alarm information to ensure the safety of the wellhead construction.

[0026] Please see Figures 1-7 In another embodiment of the present invention: the sensing component 35 includes a guide post 20 that is slidably disposed on the limiting rod 19, a sensing rod 18 fixedly connected to the end of the guide post 20, and transmission rods 17 hinged to both ends of the guide post 20. The sensing rod 18 can promptly sense and transmit information about the expansion changes that occur on the inner wall of the wellhead on one side of the protective cloth 2.

[0027] The telescopic assembly 36 includes a reset member 27 fixedly disposed inside the sensing cylinder 15. A movable block 26 is fixedly connected to one side of the reset member 27. The movable block 26 is slidably disposed inside the sensing cylinder 15. A piston column 16 is fixedly connected to the end of the movable block 26. One end of the piston column 16 is slidably connected through the side wall of the sensing cylinder 15. Both ends of the piston column 16 are hinged to the transmission rod 17. The reset member 27 can be a spring or elastic metal sheet with telescopic properties. In actual operation, the sensing rod 18 will drive the piston columns 16 at both ends of the transmission rod 17 to move through the guide column 20. The piston columns 16 move outward, and the air inside the sensing cylinder 15 is compressed.

[0028] The pneumatic assembly 37 includes an installation cylinder 6 fixedly mounted on the support arm 14. Guide pipes 22 are fixedly connected to both sides of the installation cylinder 6. A gas transmission pipe 21 connects the guide pipes 22 and the sensing cylinder 15. A piston block 23 is slidably mounted inside the installation cylinder 6. A telescopic column 12 is fixedly connected to the top of the piston block 23. A telescopic component 24 is sleeved on the telescopic column 12 inside the installation cylinder 6. A fixed arm 7 is fixedly connected to the top of the telescopic column 12. The telescopic column 12 is slidably connected through the top wall of the installation cylinder 6. The telescopic component 24 can be a spring or an elastic metal sheet with telescopic properties. The compressed gas inside the sensing cylinder 15 can be transmitted into the installation cylinder 6 through the guide pipes 22 and the gas transmission pipe 21. This process realizes the transmission of expansion information of the wellhead inner wall.

[0029] The alarm component 38 includes a valve rod 30 that is slidably disposed on the air guide plate 8. A valve port 31 is opened on the valve rod 30. A compression member 33 is sleeved on one end of the valve rod 30. The compression member 33 can be a spring with telescopic properties or an elastic metal sheet, etc. The bottom of the valve rod 30 is fixedly connected to a movable rod 28, and the movable rod 28 is correspondingly disposed with the fixed arm 7.

[0030] A light-shielding cylinder 9 is fixedly connected to the air guide plate 8 above the valve stem 30. The valve stem 30 extends into the light-shielding cylinder 9 and an indicator light 29 is fixedly connected to its top. The side wall of the air guide plate 8 is connected to a pneumatic alarm 25, which works on a principle similar to a whistle. When high-speed flowing gas passes by, the pneumatic alarm 25 will sound an alarm.

[0031] The safety plate 5 is fixedly connected to the mounting arm 3. A positioning rod 4 is threaded through the mounting arm 3. During actual operation, the mounting arm 3 is brought into contact with the ground, and then the device is fixedly installed on the side edge of the wellhead by rotating the positioning rod 4.

[0032] In actual operation, the device provides safety protection for the inner wall of the wellhead under the action of the safety plate 5 and the protective cloth 2. During actual use, the induction cylinder 15 is filled with gas to support the movable block 26. This gas, through the piston rod 16 and transmission rod 17, drives the induction rod 18 at one end of the guide column 20 to support one side of the protective cloth 2. When pressure arises on the outer side of the wellhead due to construction, it will compress the soil outside the wellhead, causing the soil on the inner wall of the wellhead to expand outwards. When this force is within the device's tolerance range, the induction rod 18 will not move significantly, and the device will not trigger an alarm. However, if significant pressure occurs on the outer side of the wellhead, the soil will expand to both sides under pressure. Due to the characteristics of the protective cloth 2, the protective cloth 2 will cause the induction rod 18 to shift. The induction rod 18 will then move through the guide column 2... The piston rod 16 at both ends of the transmission rod 17 moves outward, compressing the air in the sensing cylinder 15 and increasing the pressure. Under the action of the air transmission pipe 21, the pressure is transmitted into the mounting cylinder 6. The piston block 23 in the mounting cylinder 6 drives the telescopic column 12 to move upward. The fixed arm 7 at the top of the telescopic column 12 contacts the movable rod 28, which in turn drives the valve rod 30 to move upward. The indicator light 29 at the top of the valve rod 30 moves out of the light shielding cylinder 9. At the same time, the valve port 31 on the valve rod 30 is connected to the guide groove 32. Gas enters the pneumatic alarm 25 through the valve port 31 and flows out. The pneumatic alarm 25 sounds an alarm. In this case, the operator is reminded that the pressure at the edge of the wellhead is too high and there is a safety hazard. The operator can reinforce the wellhead or reduce the edge pressure according to the alarm information to ensure the safety of wellhead construction.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A safety protection device for the orifice of a gas extraction well, comprising an installation ring, characterized in that, Also includes: The protective mechanism includes a safety plate fixedly installed at the bottom of the mounting ring, a protective cloth installed between the safety plates, a limiting rod installed on one side of the protective plate, and a sensing component installed on the limiting rod, with the sensing component corresponding to the protective cloth. The sensing component is provided with sensing cylinders on both sides, and the sensing cylinders are fixedly connected to the safety plate. The sensing cylinders are provided with telescopic components, and the telescopic components are connected to the sensing component. The mounting ring is provided with a bearing plate, and a bearing arm is fixedly connected to the mounting ring. A pneumatic component is provided on the bearing arm. An air supply pump is fixedly connected to the bearing plate. The output end of the air supply pump is connected to the air guide cylinder. An air guide plate is fixedly connected to the top of the air guide cylinder. A guide groove is opened on the air guide plate. The guide groove is connected to the air guide cylinder. An alarm component is set on the air guide plate. The alarm component is set in correspondence with the pneumatic component. The sensing component includes a guide post that is slidably disposed on the limiting rod, a sensing rod that is fixedly connected to the end of the guide post, and transmission rods that are hinged to both ends of the guide post; The telescopic assembly includes a reset component fixedly installed inside the sensing cylinder, a movable block fixedly connected to one side of the reset component, the movable block slidably installed inside the sensing cylinder, a piston column fixedly connected to the end of the movable block, and the two ends of the piston column hinged to the transmission rod. The pneumatic assembly includes a mounting cylinder fixedly mounted on a support arm, with guide pipes fixedly connected to both sides of the mounting cylinder, and an air transmission pipe connecting the guide pipes and the sensing cylinder. A piston block is slidably mounted inside the mounting cylinder. The alarm component includes a valve rod that is slidably disposed on the air guide plate, a valve port is opened on the valve rod, a compression component is sleeved on one end of the valve rod, and a movable rod is fixedly connected to the bottom of the valve rod.

2. The safety protection device for the orifice of a gas extraction well according to claim 1, characterized in that, The piston block is fixedly connected to the top of a telescopic column, and a telescopic component is sleeved on the telescopic column inside the mounting cylinder. A fixed arm is fixedly connected to the top of the telescopic column.

3. The safety protection device for the orifice of a gas extraction well according to claim 1, characterized in that, A light-shielding cylinder is fixedly connected to the air guide plate above the valve stem. The valve stem extends into the light-shielding cylinder and an indicator light is fixedly connected to its top. A pneumatic alarm is connected to the side wall of the air guide plate.

4. The safety protection device for the orifice of a gas extraction well according to claim 1, characterized in that, The safety plate is fixedly connected to the outer wall of the mounting arm, and a positioning rod is threaded through the mounting arm.

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