A natural gas well production wellhead device

Abstract

The present invention relates to the technical field of natural gas extraction, and discloses a natural gas wellhead device, comprising a gas tree main body, a flat valve being slidably connected to the inner wall of the gas tree main body, a threaded rod being rotatably connected to the inner wall of the gas tree main body, and a fan-shaped frame being rotatably connected to the inner wall of the gas tree main body. When the valve needs to be closed, the threaded rod is rotated by rotating the rotating handle, thereby pushing the flat valve to move and blocking the natural gas. The natural gas flowing in the flow guide pipe will push the fan-shaped frame to rotate, and the threaded rod is driven to rotate by a reciprocating component to divert the natural gas in the gas tree main body, thereby reducing the resistance of the natural gas to the flat valve. At the same time, the fan-shaped frame is pushed to rotate by the natural gas, which drives the threaded rod to rotate, thereby accelerating the rotation speed of the threaded rod, thereby accelerating the movement speed of the flat valve, effectively preventing the natural gas pressure from being high, thereby generating strong resistance to the flat valve, slowing down the closing speed of the flat valve, and increasing the risk of leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas production equipment, in particular to a natural gas well production wellhead device. Background Art

[0002] In recent years, with the continuous development of science and technology and society, people's living and production standards have been greatly improved. Since natural gas only produces carbon dioxide and water during the combustion process, the carbon dioxide produced is only about 40% of that produced by coal combustion, and there is no waste residue after combustion, it has the advantages of good safety and high calorific value compared to coal, oil and other energy sources, and is favored by people. my country has huge reserves of natural gas. As a clean energy, natural gas is extremely in line with the country's energy conservation and environmental protection concept.

[0003] Among them, underground natural gas often has high pressure and will flow upward from the pipeline. However, when the pressure in the pipeline is high and the lower main valve needs to be closed, the high-pressure natural gas will increase the resistance to the movement of the lower main valve, making it more difficult to close the valve, which may lead to an increase in the valve closing time and an increase in the risk of leakage. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a natural gas well production wellhead device, comprising a gas tree body, wherein a flat valve is slidably connected to the inner wall of the gas tree body;

[0005] A gas extraction mechanism, wherein a plugging assembly is rotatably provided on the side wall of the gas extraction mechanism, and a guide assembly is installed on the inner wall of the gas extraction mechanism, and the plugging assembly is used to control the flow of natural gas;

[0006] A connecting mechanism, which is installed on the inner wall of the gas extraction mechanism and is used to speed up the movement of the flat valve; and a blocking mechanism, which is located on the inner wall of the connecting mechanism and is used to allow the connecting mechanism to continue rotating after the flat valve is closed.

[0007] A threaded rod is rotatably connected to the inner wall of the gas tree body, a fan-shaped frame is rotatably connected to the inner wall of the gas tree body, the inner wall of the fan-shaped frame is rotatably connected to the outer wall of the threaded rod, and a connecting pipe is connected through the inner wall of the gas tree body;

[0008] Among them, when the natural gas pressure in the main body of the gas tree is high and the valve needs to be closed, the connecting mechanism is used to accelerate the closing speed of the sealing component, so that the flat valve can quickly block the high-pressure natural gas, effectively preventing the high natural gas pressure from generating strong resistance to the flat valve when it moves, slowing down the closing speed of the flat valve and increasing the risk of leakage. After the sealing component is closed through the blocking mechanism, the connecting mechanism can continue to rotate.

[0009] Preferably, the gas extraction mechanism includes:

[0010] A plugging assembly, the side wall of the plugging assembly is rotatably arranged with the inner wall of the gas tree body to control the flow of natural gas;

[0011] The guide assembly is fixedly arranged at the outer wall of the guide assembly and the inner wall of the gas tree body, and is used to guide the natural gas to flow toward the connecting mechanism.

[0012] Preferably, the communication mechanism includes:

[0013] A push assembly is rotatably arranged on the inner wall of the main body of the gas tree to accelerate the movement speed of the flat valve;

[0014] The flow assembly is fixedly arranged on the inner wall of the connecting pipe and is used to allow the natural gas to flow in one direction;

[0015] Among them, when the valve needs to be closed, the guide component guides the natural gas to contact the pushing component, causing the pushing component to rotate, driving the sealing component to rotate rapidly, accelerating the movement speed of the flat valve, and effectively preventing the high natural gas pressure from generating strong resistance to the flat valve, slowing down the closing speed of the flat valve, and increasing the risk of leakage.

[0016] Preferably, the blocking mechanism includes:

[0017] A locking assembly is slidably arranged on the inner wall of the threaded rod and is used to enable the pushing assembly to continue rotating after the blocking assembly is closed;

[0018] A reciprocating assembly is slidably arranged on the inner wall of the connecting pipe and is used to push the circulation assembly to move;

[0019] Among them, when the flat valve is closed, the natural gas will still contact the pushing component, and the locking component allows the pushing component to rotate smoothly, effectively preventing the flat valve from stopping moving. Part of the natural gas will still contact the fan-shaped frame, and the fan-shaped frame will be difficult to rotate, affecting the guidance of the natural gas, resulting in a higher natural gas pressure in the area, which may cause natural gas to leak from the area. When the pushing component rotates, it will drive the reciprocating component to move, allowing the circulation component to open and close, and allowing the natural gas to move to the top of the flat valve.

[0020] Preferably, the plugging assembly includes a rotating handle rotatably connected to the side wall of the gas tree body, the side wall of the rotating handle is fixedly connected to the side wall of the threaded rod, and the outer wall of the threaded rod is threadedly connected to the inner wall of the flat valve;

[0021] The guide assembly includes a guide pipe connected to the inner wall of the gas tree body, and a threaded blocking rod is threadedly connected to the inner wall of the guide pipe;

[0022] Among them, when the natural gas pressure in the main body of the gas production tree is high and the valve needs to be closed, the operator rotates the threaded blocking rod to move the threaded blocking rod toward the turning handle to eliminate the obstruction of the natural gas in the diversion pipe. Afterwards, by turning the turning handle, the threaded rod rotates, pushing the flat valve to move, and moving the flat valve away from the turning handle to block the natural gas.

[0023] Preferably, the pushing assembly includes a ventilation groove provided on the inner wall of the threaded blocking rod, the blocking rod is fixedly connected to the inner wall of the guide tube, and the outer wall of the blocking rod is slidably connected to the inner wall of the ventilation groove;

[0024] Among them, the natural gas flowing in the guide tube will come into contact with the fan-shaped frame. Due to the high pressure of natural gas, the natural gas will push the blades of the fan-shaped frame, causing the fan-shaped frame to rotate, and drive the threaded rod to rotate through the reciprocating assembly.

[0025] Preferably, the circulation component includes a fixing sleeve fixedly connected to the inner wall of the connecting pipe, and a spherical rod is provided on the inner wall of the connecting pipe.

[0026] Preferably, the circulation assembly further comprises a return spring 1 fixedly connected to the side wall of the spherical rod, and the outer wall of the spherical rod is slidably connected to the inner wall of the fixed sleeve;

[0027] Among them, the natural gas that pushes the fan-shaped frame to rotate will enter the connecting pipe and contact the spherical rod. The natural gas will push the spherical rod to move, allowing the spherical rod to squeeze the reset spring 1, so that it accumulates rebound force. The spherical rod will move and separate from the inclined surface of the connecting pipe, leaving a gap between the two. Natural gas will flow through the gap, so that the natural gas in the connecting pipe is discharged into the main body of the gas production tree, and the natural gas is moved to the top of the flat valve, diverting the natural gas in the main body of the gas production tree. By diverting the natural gas, the resistance of the natural gas to the flat valve is reduced. At the same time, the fan-shaped frame is pushed to rotate by natural gas, which drives the threaded rod to rotate and speeds up the rotation speed of the threaded rod, thereby speeding up the movement speed of the flat valve, so that the flat valve can quickly block the high-pressure natural gas, effectively preventing the natural gas pressure from being too high. When the flat valve moves, it generates strong resistance to the flat valve, slowing down the closing speed of the flat valve and increasing the risk of leakage.

[0028] Preferably, the clamping assembly includes eight arc-shaped blocks slidably connected to the inner wall of the threaded rod, the side walls of the eight arc-shaped blocks are fixedly connected to the second return spring, the inner wall of the fan-shaped frame is provided with eight inclined grooves, and the inner walls of the eight inclined grooves are slidably connected to the outer walls of the eight arc-shaped blocks;

[0029] Among them, when the fan-shaped frame rotates, the inclined groove will contact the arc block, pushing the arc block to rotate, and the arc block will push the threaded rod to rotate, so that the threaded rod rotates smoothly. When the flat valve moves into place, the threaded rod will stop rotating. At this time, the fan-shaped frame continues to rotate, and the inclined surface of the inclined groove will squeeze the arc surface of the arc block, causing the arc block to drop, causing the arc block to squeeze the reset spring 2, allowing the reset spring 2 to accumulate rebound force, so that the arc block is separated from the inclined groove, and the fan-shaped frame can rotate smoothly, effectively preventing part of the natural gas from contacting the fan-shaped frame after the flat valve stops moving, making it difficult for the fan-shaped frame to rotate, affecting the guidance of the natural gas, causing the flow speed of part of the natural gas to slow down, making it difficult to enter the connecting pipe, causing natural gas to gather around the fan-shaped frame, resulting in higher natural gas pressure in this area, which may cause natural gas to leak from this area.

[0030] Preferably, the reciprocating assembly includes a concave-convex ring fixedly connected to the outer wall of the fan-shaped frame, a lifting rod is slidably connected to the inner wall of the connecting pipe, and the bottom of the lifting rod is slidably connected to the outer wall of the concave-convex ring.

[0031] Preferably, the reciprocating assembly further comprises a connecting rod provided on the inner wall of the connecting tube, the side wall of the connecting rod being fixedly connected to the side wall of the spherical rod, the top of the jacking rod being rotatably connected to a connecting rod, and the inner wall of the connecting rod being rotatably connected to the side wall of the connecting rod;

[0032] Among them, when the fan-shaped frame rotates, it will drive the concave and convex ring to rotate. When the convex position of the concave and convex ring contacts the lifting rod, it will squeeze the lifting rod to rise, and the lifting rod will push the connecting rod to rotate, allowing the connecting rod to push the connecting rod away from the rotating handle, allowing the connecting rod to drive the spherical rod to move, allowing the spherical rod to be separated from the inclined surface of the connecting pipe by a farther distance, leaking a larger gap, and being able to quickly discharge natural gas from the connecting pipe into the main body of the gas production tree, effectively preventing part of the natural gas flowing in the main body of the gas production tree from entering the connecting pipe during the movement of the flat valve, exerting an extrusion pressure on the right side of the spherical rod, resulting in the natural gas on the left side of the spherical rod requiring a greater pushing force to push the spherical rod to move, resulting in a smaller gap between the spherical rod and the inclined surface of the connecting pipe, making it difficult to discharge the natural gas into the main body of the gas production tree in time, causing natural gas accumulation.

[0033] The present invention has the following beneficial effects:

[0034] When the present invention is used, when it is necessary to close the valve, the operator removes the obstruction of the natural gas in the guide pipe by rotating the guide assembly, and then rotates the handle to rotate the threaded rod, pushing the flat valve to move and block the natural gas. The natural gas flowing in the guide pipe will push the fan-shaped frame to rotate, and the reciprocating assembly drives the threaded rod to rotate. The natural gas that pushes the fan-shaped frame to rotate will enter the connecting pipe and contact the spherical rod. The natural gas in the connecting pipe is discharged into the gas production tree body through the circulation assembly, and the natural gas in the gas production tree body is diverted, reducing the resistance of the natural gas to the flat valve. At the same time, the natural gas pushes the fan-shaped frame to rotate, drives the threaded rod to rotate, and accelerates the rotation speed of the threaded rod, thereby accelerating the movement speed of the flat valve, effectively preventing the natural gas pressure from being high, generating strong resistance to the flat valve, slowing down the closing speed of the flat valve, and increasing the risk of leakage.

[0035] (2) In the present invention, when the fan-shaped frame rotates, the inclined groove will contact the arc block, pushing the arc block to rotate, and the arc block will push the threaded rod to rotate, so that the threaded rod can rotate smoothly. When the flat valve moves into place, the threaded rod will stop rotating. At this time, the fan-shaped frame continues to rotate, and the inclined surface of the inclined groove will squeeze the arc surface of the arc block, allowing the arc block to descend, so that the fan-shaped frame can rotate smoothly, effectively preventing part of the natural gas from contacting the fan-shaped frame after the flat valve stops moving, making it difficult for the fan-shaped frame to rotate, affecting the guidance of the natural gas, causing part of the natural gas to flow slower and difficult to enter the connecting pipe, causing the natural gas to gather around the fan-shaped frame, resulting in a higher natural gas pressure in the area, which may cause natural gas to leak from the area.

[0036] (3) When the fan-shaped frame rotates, the concave-convex ring will be driven to rotate. The protruding position of the concave-convex ring will squeeze the lifting rod to rise, and the connecting rod will be pushed to move by the connecting rod, so that the connecting rod will drive the spherical rod to move, so that a larger gap will be formed between the spherical rod and the inclined surface of the connecting pipe. Natural gas can be quickly discharged from the connecting pipe into the main body of the gas tree, effectively preventing part of the natural gas from entering the connecting pipe during the movement of the flat valve and exerting a squeezing force on the right side of the spherical rod, such as: Figure 8 As shown, the natural gas on the left side of the spherical rod requires a greater driving force to push the spherical rod and the inclined surface of the connecting pipe to leak out a smaller gap, making it difficult to discharge the natural gas into the main body of the gas tree in time, causing natural gas accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1This is a schematic cross-sectional view of the main body of the gas tree of the present invention;

[0039] Figure 2 This is a schematic left side view of the main body of the gas tree of the present invention;

[0040] Figure 3 This is a schematic cross-sectional view of the connecting pipe of the present invention;

[0041] Figure 4 This is a schematic bottom-view cross-sectional view of the flow guide tube of the present invention;

[0042] Figure 5 It is a schematic cross-sectional view of a fan-shaped frame of the present invention;

[0043] Figure 6 For the present invention Figure 5 A in the middle is an enlarged schematic diagram;

[0044] Figure 7 This is a schematic cross-sectional view of a flat plate valve according to the present invention;

[0045] Figure 8 For the present invention Figure 7 The enlarged schematic diagram of point B in the middle;

[0046] Figure 9 For the present invention Figure 7 The enlarged schematic diagram of point C in the middle;

[0047] Figure 10 This is a schematic diagram of the arc block structure of the present invention.

[0048] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0049] In the figure: 1. Gas production mechanism; 11. Blocking assembly; 12. Guide assembly; 111. Gas production tree body; 112. Flat valve; 113. Rotating handle; 121. Guide pipe; 122. Threaded blocking rod; 2. Connecting mechanism; 21. Pushing assembly; 22. Circulation assembly; 211. Fan-shaped frame; 212. Threaded rod; 213. Connecting pipe; 214. Ventilation groove; 215. Blocking rod; 221. Fixing sleeve; 222. Spherical rod; 223. Return spring 1; 3. Blocking mechanism; 31. Engaging assembly; 32. Reciprocating assembly; 311. Arc block; 312. Return spring 2; 313. Inclined groove; 321. Concave and convex ring; 322. Lifting rod; 323. Connecting rod; 324. Connecting rod. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] For example 1, please refer to Figure 1-Figure 5 The present invention is a natural gas wellhead device, comprising a gas tree body 111, wherein a flat valve 112 is slidably connected to the inner wall of the gas tree body 111;

[0052] A gas extraction mechanism 1, a plugging assembly 11 is rotatably provided on the side wall of the gas extraction mechanism 1, and a guide assembly 12 is installed on the inner wall of the gas extraction mechanism 1. The plugging assembly 11 is used to control the flow of natural gas;

[0053] The connecting mechanism 2 is installed on the inner wall of the gas extraction mechanism 1 and is used to speed up the movement of the flat valve 112; and

[0054] The blocking mechanism 3 is located on the inner wall of the connecting mechanism 2 and is used to allow the connecting mechanism 2 to continue rotating after the flat valve 112 is closed;

[0055] A threaded rod 212 is rotatably connected to the inner wall of the gas tree body 111. A fan-shaped frame 211 is rotatably connected to the inner wall of the gas tree body 111. The inner wall of the fan-shaped frame 211 is rotatably connected to the outer wall of the threaded rod 212. A connecting pipe 213 is connected through the inner wall of the gas tree body 111.

[0056] Among them, when the natural gas pressure in the gas tree body 111 is high and the valve needs to be closed, the connecting mechanism 2 is used to accelerate the closing speed of the sealing component 11, so that the flat valve 112 can quickly block the high-pressure natural gas, effectively preventing the natural gas pressure from being high. When the flat valve 112 moves, it will generate strong resistance to the flat valve 112, slowing down the closing speed of the flat valve 112 and increasing the risk of leakage. After the sealing component 11 is closed through the blocking mechanism 3, the connecting mechanism 2 can continue to rotate.

[0057] The gas production mechanism 1 includes:

[0058] The plugging assembly 11 is rotatably arranged at the side wall of the plugging assembly 11 and the inner wall of the gas tree body 111 to control the flow of natural gas;

[0059] The guide assembly 12 is fixedly provided at the outer wall of the guide assembly 12 and the inner wall of the gas tree body 111 , and is used to guide the natural gas to flow toward the connecting mechanism 2 .

[0060] The connecting mechanism 2 includes:

[0061] A push assembly 21 is rotatably disposed on the inner wall of the gas tree body 111 to accelerate the movement of the flat valve 112;

[0062] The circulation component 22 is fixedly arranged on the inner wall of the connecting pipe 213 and is used to allow the natural gas to flow in one direction;

[0063] Among them, when the valve needs to be closed, the natural gas is guided to contact the pushing component 21 through the guiding component 12, so that the pushing component 21 rotates, driving the blocking component 11 to rotate rapidly, accelerating the movement speed of the flat valve 112, and effectively preventing the high natural gas pressure from generating strong resistance to the flat valve 112, slowing down the closing speed of the flat valve 112, and increasing the risk of leakage.

[0064] The blocking mechanism 3 includes:

[0065] The locking assembly 31 is slidably disposed on the inner wall of the threaded rod 212 and is used to enable the pushing assembly 21 to continue to rotate after the blocking assembly 11 is closed;

[0066] A reciprocating assembly 32 is slidably disposed on the inner wall of the connecting pipe 213 to push the circulation assembly 22 to move;

[0067] Among them, when the flat valve 112 is closed, the natural gas will still contact the pushing component 21, and the locking component 31 allows the pushing component 21 to rotate smoothly, effectively preventing part of the natural gas from contacting the fan-shaped frame 211 after the flat valve 112 stops moving. The fan-shaped frame 211 is difficult to rotate, affecting the guidance of the natural gas, resulting in a high natural gas pressure in the area, which may cause natural gas to leak from the area. When the pushing component 21 rotates, it will drive the reciprocating component 32 to move, allowing the circulation component 22 to open and close, and allowing the natural gas to move to the top of the flat valve 112.

[0068] For example 2, please refer to Figures 1-10 The present invention is a natural gas wellhead device. Based on Example 1, the plugging assembly 11 includes a rotating handle 113 rotatably connected to the side wall of the gas tree body 111. The side wall of the rotating handle 113 is fixedly connected to the side wall of the threaded rod 212. The outer wall of the threaded rod 212 is threadedly connected to the inner wall of the flat valve 112.

[0069] The guide assembly 12 includes a guide tube 121 that is connected to the inner wall of the gas tree body 111, and a threaded blocking rod 122 is threadedly connected to the inner wall of the guide tube 121;

[0070] Among them, when the natural gas pressure in the gas production tree body 111 is high and the valve needs to be closed, the operator rotates the threaded blocking rod 122 to move the threaded blocking rod 122 toward the rotating handle 113, thereby removing the obstruction to the natural gas in the guide tube 121. Afterwards, by rotating the rotating handle 113, the threaded rod 212 rotates, pushing the flat valve 112 to move, and moving the flat valve 112 away from the rotating handle 113 to block the natural gas.

[0071] The pushing assembly 21 includes a vent groove 214 formed on the inner wall of the threaded blocking rod 122. A blocking rod 215 is fixedly connected to the inner wall of the guide tube 121. The outer wall of the blocking rod 215 is slidably connected to the inner wall of the vent groove 214.

[0072] The natural gas flowing in the flow guide tube 121 contacts the fan-shaped frame 211 . Due to the high pressure of the natural gas, the natural gas pushes the blades of the fan-shaped frame 211 , causing the fan-shaped frame 211 to rotate, thereby driving the threaded rod 212 to rotate via the reciprocating assembly 32 .

[0073] The circulation component 22 includes a fixing sleeve 221 fixedly connected to the inner wall of the connecting pipe 213 , and a spherical rod 222 is provided on the inner wall of the connecting pipe 213 .

[0074] The circulation assembly 22 further includes a return spring 223 fixedly connected to the side wall of the spherical rod 222, and the outer wall of the spherical rod 222 is slidably connected to the inner wall of the fixed sleeve 221;

[0075] The natural gas that pushes the fan-shaped frame 211 to rotate will enter the connecting pipe 213 and contact the spherical rod 222. The natural gas will push the spherical rod 222 to move, so that the spherical rod 222 squeezes the return spring 223, so that it accumulates rebound force. The spherical rod 222 moves and separates from the inclined surface of the connecting pipe 213, leaving a gap between the two. The natural gas will flow through the gap, so that the natural gas in the connecting pipe 213 is discharged into the gas tree body 111, and the natural gas moves to the top of the flat valve 112, closing the gas tree body. The natural gas in the body 111 is diverted, and the resistance of the natural gas to the flat valve 112 is reduced by diverting the natural gas. At the same time, the fan-shaped frame 211 is pushed to rotate by the natural gas, which drives the threaded rod 212 to rotate, thereby accelerating the rotation speed of the threaded rod 212, thereby accelerating the movement speed of the flat valve 112, so that the flat valve 112 can quickly block the high-pressure natural gas, effectively preventing the natural gas pressure from being high, and generating strong resistance to the flat valve 112 when it moves, slowing down the closing speed of the flat valve 112 and increasing the risk of leakage.

[0076] The locking assembly 31 includes eight arc-shaped blocks 311 slidably connected to the inner wall of the threaded rod 212. The side walls of the eight arc-shaped blocks 311 are fixedly connected to the second return spring 312. The inner wall of the fan-shaped frame 211 is provided with eight inclined grooves 313. The inner walls of the eight inclined grooves 313 are slidably connected to the outer walls of the eight arc-shaped blocks 311.

[0077] When the fan-shaped frame 211 rotates, the inclined groove 313 contacts the arc block 311, pushing the arc block 311 to rotate, and the arc block 311 pushes the threaded rod 212 to rotate, so that the threaded rod 212 rotates smoothly. When the flat valve 112 moves into place, the threaded rod 212 stops rotating. At this time, the fan-shaped frame 211 continues to rotate, and the inclined surface of the inclined groove 313 squeezes the arc surface of the arc block 311, causing the arc block 311 to drop, causing the arc block 311 to squeeze the reset spring 2 312, so that the reset spring 2 The second spring 312 accumulates a rebound force, causing the arc block 311 to separate from the inclined groove 313, so that the sector frame 211 can rotate smoothly. This effectively prevents some natural gas from coming into contact with the sector frame 211 after the flat valve 112 stops moving, making it difficult for the sector frame 211 to rotate, affecting the guidance of the natural gas, causing the flow speed of some natural gas to slow down and making it difficult for it to enter the connecting pipe 213. As a result, natural gas accumulates around the sector frame 211, resulting in a higher natural gas pressure in this area, which may cause natural gas leakage from this area.

[0078] The reciprocating assembly 32 includes a concave-convex ring 321 fixedly connected to the outer wall of the fan-shaped frame 211 , a lifting rod 322 is slidably connected to the inner wall of the connecting pipe 213 , and the bottom of the lifting rod 322 is slidably connected to the outer wall of the concave-convex ring 321 .

[0079] The reciprocating assembly 32 further includes a connecting rod 323 provided on the inner wall of the connecting tube 213. The side wall of the connecting rod 323 is fixedly connected to the side wall of the spherical rod 222. The top of the lifting rod 322 is rotatably connected to a connecting rod 324. The inner wall of the connecting rod 324 is rotatably connected to the side wall of the connecting rod 323.

[0080] When the fan-shaped frame 211 rotates, the concave-convex ring 321 is driven to rotate. When the protruding position of the concave-convex ring 321 contacts the lifting rod 322, the lifting rod 322 is squeezed to rise. The lifting rod 322 pushes the connecting rod 324 to rotate, so that the connecting rod 324 pushes the connecting rod 323 away from the rotating handle 113, and the connecting rod 323 drives the spherical rod 222 to move, so that the spherical rod 222 is separated from the inclined surface of the connecting pipe 213 by a greater distance, leaking a larger gap, and quickly discharging natural gas from the connecting pipe 213 into the gas tree body 111, effectively preventing part of the natural gas flowing in the gas tree body 111 from entering the connecting pipe 213 during the movement of the flat valve 112, exerting a squeezing force on the right side of the spherical rod 222, such as: Figure 8As shown, the natural gas on the left side of the spherical rod 222 requires a greater driving force to push the spherical rod 222 to move, resulting in a smaller gap between the spherical rod 222 and the inclined surface of the connecting pipe 213, making it difficult to discharge the natural gas into the gas tree body 111 in time, causing natural gas accumulation.

[0081] There is no limit on the number of the above components, and relevant technicians in this field can freely set them according to actual needs, as long as the above components are installed in the corresponding component connection positions.

[0082] A specific application of this embodiment is: when the present invention is used, when the natural gas pressure in the gas tree body 111 is high and the valve needs to be closed, the operator rotates the threaded blocking rod 122 to move the threaded blocking rod 122 toward the rotating handle 113, thereby removing the obstruction to the natural gas in the guide pipe 121. Afterwards, the threaded rod 212 is rotated by rotating the rotating handle 113 to push the flat valve 112 to move away from the rotating handle 113 to block the natural gas. The natural gas flowing in the guide pipe 121 will contact the fan-shaped frame 211. Since the natural gas has high pressure, the natural gas will push the blades of the fan-shaped frame 211 to rotate the fan-shaped frame 211. The reciprocating assembly 32 drives the threaded rod 212 to rotate, and the natural gas that pushes the fan-shaped frame 211 to rotate will enter the connecting pipe 213 and contact the round ball rod 222. The natural gas will push the round ball rod 222 to rotate. 22 moves, causing the spherical rod 222 to squeeze the return spring 223, causing it to accumulate a rebound force. The spherical rod 222 moves and separates from the inclined surface of the connecting pipe 213, leaving a gap between the two. Natural gas will flow through the gap, causing the natural gas in the connecting pipe 213 to be discharged into the gas tree body 111, allowing the natural gas to move to the top of the flat valve 112, diverting the natural gas in the gas tree body 111. By diverting the natural gas, the resistance of the natural gas to the flat valve 112 is reduced. At the same time, the fan-shaped frame 211 is pushed to rotate by the natural gas, driving the threaded rod 212 to rotate, accelerating the rotation speed of the threaded rod 212, thereby accelerating the movement speed of the flat valve 112, allowing the flat valve 112 to quickly block the high-pressure natural gas, effectively preventing the natural gas pressure from being too high. When the flat valve 112 moves, it generates strong resistance to the flat valve 112, slowing down the closing speed of the flat valve 112 and increasing the risk of leakage.

[0083] When the threaded blocking rod 122 is closed, the threaded blocking rod 122 is rotated again to move it away from the rotating handle 113. When the threaded blocking rod 122 moves, part of the natural gas will flow through the vent groove 214, reducing the blocking force of the natural gas on the threaded blocking rod 122, until the threaded blocking rod 122 fits into the blocking rod 215, so that the threaded blocking rod 122 blocks the guide tube 121 again, blocking the flow of natural gas.

[0084] Secondly, when the fan-shaped frame 211 rotates, the inclined groove 313 will contact the arc block 311, pushing the arc block 311 to rotate, and the arc block 311 pushes the threaded rod 212 to rotate, so that the threaded rod 212 rotates smoothly. When the flat valve 112 moves into place, the threaded rod 212 will stop rotating. At this time, the fan-shaped frame 211 continues to rotate, and the inclined surface of the inclined groove 313 will squeeze the arc surface of the arc block 311, causing the arc block 311 to drop, causing the arc block 311 to squeeze the reset spring 2 312, allowing the reset spring 2 312 to The second spring 312 accumulates a rebound force, separating the arc block 311 from the inclined groove 313, allowing the sector frame 211 to rotate smoothly. This effectively prevents some natural gas from coming into contact with the sector frame 211 after the flat valve 112 stops moving, making it difficult for the sector frame 211 to rotate and affecting the guidance of the natural gas. This causes some natural gas to flow more slowly and have difficulty entering the connecting pipe 213, resulting in natural gas accumulation around the sector frame 211, causing high natural gas pressure in that area and possible leakage from that area.

[0085] Secondly, when the fan-shaped frame 211 rotates, it drives the concave-convex ring 321 to rotate. When the protruding position of the concave-convex ring 321 contacts the lifting rod 322, it squeezes the lifting rod 322 to rise, and the lifting rod 322 pushes the connecting rod 324 to rotate, so that the connecting rod 324 pushes the connecting rod 323 away from the rotating handle 113, and the connecting rod 323 drives the spherical rod 222 to move, so that the spherical rod 222 is separated from the inclined surface of the connecting pipe 213 by a greater distance, leaking a larger gap, and quickly discharging natural gas from the connecting pipe 213 into the gas tree body 111, effectively preventing part of the natural gas flowing in the gas tree body 111 from entering the connecting pipe 213 during the movement of the flat valve 112, exerting a squeezing force on the right side of the spherical rod 222, such as: Figure 8 As shown, the natural gas on the left side of the spherical rod 222 requires a greater driving force to push the spherical rod 222 to move, resulting in a smaller gap between the spherical rod 222 and the inclined surface of the connecting pipe 213, making it difficult to discharge the natural gas into the gas tree body 111 in time, causing natural gas accumulation.

[0086] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A natural gas wellhead device, comprising a gas tree body (111), wherein a flat valve (112) is slidably connected to the inner wall of the gas tree body (111), characterized in that: Also includes: A gas extraction mechanism (1), wherein a plugging assembly (11) is rotatably provided on a side wall of the gas extraction mechanism (1), a guide assembly (12) is installed on an inner wall of the gas extraction mechanism (1), and the plugging assembly (11) is used to control the flow of natural gas; a connecting mechanism (2), the connecting mechanism (2) being installed at the inner wall of the gas extraction mechanism (1) and being used to accelerate the movement speed of the flat valve (112); and a blocking mechanism (3), the blocking mechanism (3) being located at the inner wall of the connecting mechanism (2) and being used to allow the connecting mechanism (2) to continue to rotate after the flat valve (112) is closed; The inner wall of the gas tree body (111) is rotatably connected to a threaded rod (212), the inner wall of the gas tree body (111) is rotatably connected to a fan-shaped frame (211), the inner wall of the fan-shaped frame (211) is rotatably connected to the outer wall of the threaded rod (212), and the inner wall of the gas tree body (111) is connected to a connecting pipe (213); When the natural gas pressure in the main body (111) of the gas tree is high and the valve needs to be closed, the valve closing speed of the plugging component (11) is accelerated by the connecting mechanism (2), and the blocking mechanism (3) completes the closing of the plugging component (11), allowing the connecting mechanism (2) to continue to rotate; The communication mechanism (2) comprises: A pushing component (21), the pushing component (21) being rotatably arranged on the inner wall of the gas tree body (111) and used for accelerating the moving speed of the flat valve (112); A circulation component (22), wherein the circulation component (22) is fixedly arranged on the inner wall of the connecting pipe (213) and is used to allow natural gas to flow in one direction; When the valve needs to be closed, the guide component (12) guides the natural gas to contact the push component (21), causing the push component (21) to rotate, driving the blocking component (11) to rotate rapidly, thereby accelerating the movement speed of the flat valve (112); The blocking mechanism (3) comprises: A locking assembly (31), wherein the locking assembly (31) is slidably disposed on the inner wall of the threaded rod (212) and is used to enable the pushing assembly (21) to continue rotating after the blocking assembly (11) is closed; A reciprocating assembly (32), the reciprocating assembly (32) being slidably disposed on the inner wall of the connecting pipe (213) and being used to push the circulation assembly (22) to move; When the flat valve (112) is closed, the natural gas will still contact the push component (21), and the push component (21) can be smoothly rotated through the locking component (31). When the push component (21) rotates, it will drive the reciprocating component (32) to move, so that the circulation component (22) opens and closes, and the natural gas moves to the top of the flat valve (112); The reciprocating assembly (32) comprises a concave-convex ring (321) fixedly connected to the outer wall of the fan-shaped frame (211); a lifting rod (322) is slidably connected to the inner wall of the connecting pipe (213); and the bottom of the lifting rod (322) is slidably connected to the outer wall of the concave-convex ring (321); The reciprocating assembly (32) further includes a connecting rod (323) disposed on the inner wall of the connecting tube (213), the side wall of the connecting rod (323) being fixedly connected to the side wall of the spherical rod (222), the top of the lifting rod (322) being rotatably connected to a connecting rod (324), the inner wall of the connecting rod (324) being rotatably connected to the side wall of the connecting rod (323); When the threaded rod (212) rotates, the concave-convex ring (321) is driven to rotate, so that the protruding position of the concave-convex ring (321) pushes the lifting rod (322) to rise, and the connecting rod (324) pushes the connecting rod (323) and the spherical rod (222) to move, so that the spherical rod (222) is separated from the inclined surface of the connecting pipe (213).

2. A natural gas well production wellhead device according to claim 1, characterized in that: The gas extraction mechanism (1) comprises: A plugging assembly (11), wherein the side wall of the plugging assembly (11) is rotatably arranged with the inner wall of the gas tree body (111) for controlling the flow of natural gas; A guide component (12) is fixedly arranged at an outer wall of the guide component (12) and an inner wall of the gas tree body (111), and is used to guide the natural gas to flow toward the connecting mechanism (2).

3. A natural gas well production wellhead device according to claim 2, characterized in that: The plugging assembly (11) comprises a rotating handle (113) rotatably connected to the side wall of the gas tree body (111); the side wall of the rotating handle (113) is fixedly connected to the side wall of the threaded rod (212); and the outer wall of the threaded rod (212) is threadedly connected to the inner wall of the flat valve (112); The guide assembly (12) comprises a flow guide tube (121) connected through the inner wall of the gas tree body (111), and a threaded blocking rod (122) is threadedly connected to the inner wall of the flow guide tube (121); When the natural gas pressure in the main body (111) of the gas tree is high and the valve needs to be closed, the threaded rod (212) is rotated by turning the handle (113), thereby pushing the flat valve (112) to move and block the natural gas.

4. A natural gas well production wellhead device according to claim 3, characterized in that: The pushing assembly (21) includes a ventilation groove (214) provided on the inner wall of the threaded blocking rod (122); a blocking rod (215) is fixedly connected to the inner wall of the guide tube (121); and an outer wall of the blocking rod (215) is slidably connected to the inner wall of the ventilation groove (214); Before closing the valve, the threaded blocking rod (122) is rotated to remove the obstruction to the natural gas, and part of the natural gas will push the fan-shaped frame (211) to rotate through the guide tube (121), and drive the threaded rod (212) to rotate through the locking assembly (31), thereby accelerating the rotation speed of the threaded rod (212).

5. A natural gas well production wellhead device according to claim 4, characterized in that: The circulation assembly (22) comprises a fixed sleeve (221) fixedly connected to the inner wall of the connecting pipe (213), and a spherical rod (222) is provided on the inner wall of the connecting pipe (213).

6. A natural gas well production wellhead device according to claim 5, characterized in that: The circulation assembly (22) further includes a return spring (223) fixedly connected to the side wall of the spherical rod (222), and the outer wall of the spherical rod (222) is slidably connected to the inner wall of the fixed sleeve (221); The natural gas that drives the fan-shaped frame (211) to rotate enters the connecting pipe (213), pushes the spherical rod (222) to separate from the inclined surface of the connecting pipe (213), and moves the natural gas to the top of the flat valve (112), thereby reducing the natural gas in contact with the flat valve (112).

7. A natural gas well production wellhead device according to claim 6, characterized in that: The engaging assembly (31) comprises eight arc-shaped blocks (311) slidably connected to the inner wall of the threaded rod (212), and the side walls of the eight arc-shaped blocks (311) are all fixedly connected to a second return spring (312); Eight inclined grooves (313) are provided on the inner wall of the fan-shaped frame (211), and the inner walls of the eight inclined grooves (313) are all slidably connected to the outer walls of the eight arc-shaped blocks (311); When the flat valve (112) is closed, the high-pressure natural gas will also push the fan-shaped frame (211) to rotate. When the fan-shaped frame (211) rotates, the inclined groove (313) will squeeze the arc block (311) downward, allowing the fan-shaped frame (211) to rotate smoothly.

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