Natural gas ball valve system with leakage alarm function and using method thereof

Abstract

The invention relates to the technical field of natural gas ball valves, in particular to a natural gas ball valve system with a leakage alarm function and a using method thereof.The natural gas ball valve system comprises a valve body, supporting legs are rotationally connected to the two sides of the valve body correspondingly, monitoring lantern rings sleeve the two ends of the valve body correspondingly, and an adjusting mechanism is rotationally connected to the valve body; the collecting tank is fixedly connected to one end of the adjusting mechanism, the exhaust pipes are fixedly connected to the two sides of the collecting tank in a penetrating mode, the suction pipes are fixedly connected to the two sides of the collecting tank, and the anti-blocking mechanisms are arranged on the inner walls of the two ends of the valve body in a sliding fit mode. When pipelines at the two ends of the natural gas ball valve are detached and overhauled, residual natural gas in the pipelines can be collected, and the gas is prevented from leaking into air in the detaching process. Therefore, the risk of explosion or fire is reduced, and the operation safety is remarkably improved. By collecting residual gas, a certain amount of natural gas resources can be recycled, natural gas waste is avoided, and the energy cost can also be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas ball valves, and in particular to a natural gas ball valve system with a leakage alarm function and a use method thereof. Background Art

[0002] A natural gas ball valve is a spherical valve used for natural gas transmission and regulation. It is typically used to control natural gas flow and pressure and is widely used in natural gas pipelines, petrochemicals, city gas, and various industrial fields requiring fluid control.

[0003] The document with the prior art publication number CN218267495U collects the leaked gas by expanding the airbag, squeezing the induction switch to trigger the alarm. It can not only collect the leaked gas, but also use the alarm to notify the staff to carry out maintenance in the first time, thereby effectively improving the service life of the ball valve.

[0004] The existing technology collects leaked gas through air bags, but when leaks occur at both ends of the ball valve for repair, the pipes connecting the two ends of the ball valve need to be disassembled. At this time, natural gas will remain in the pipes. Natural gas is a flammable and explosive gas. If the existing technology is not convenient for properly handling the residual gas in the pipes on both sides, it may cause leakage or gas explosion during the disassembly process, posing serious safety risks to operators and the surrounding environment.

[0005] In summary, the prior art lacks a technology for processing the residual natural gas in the connecting pipes at both ends of the natural gas ball valve. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a natural gas ball valve system with a leakage alarm function and a method of using the same.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a natural gas ball valve system with a leakage alarm function and a method of using the same, comprising a valve body, support feet rotatably connected on both sides of the valve body, monitoring collars sleeved on both ends of the valve body, a semiconductor sensor fixedly mounted on the inner wall of the monitoring collar, an alarm fixedly mounted on the outside of the monitoring collar, an adjustment mechanism rotatably connected on the valve body, a collection tank fixedly connected at one end of the adjustment mechanism, exhaust pipes fixedly penetrate and are mounted on both sides of the collection tank, suction pipes fixedly are mounted on both sides of the collection tank, and anti-blocking mechanisms are slidably fitted on the inner walls of both ends of the valve body.

[0008] Preferably, both ends of the valve body are symmetrically structured and are fixedly connected with an air guide tube, and the outer end of the air guide tube is fixedly connected with a connecting hose.

[0009] Preferably, the anti-blocking mechanism includes a hole-blocking frame, which is movably plugged into the inner wall of the air guide tube, and one end of the hole-blocking frame is fixedly connected to a guide frame, and the guide frame is slidingly matched with the inner wall of the valve body, and one end of the guide frame is slidingly matched with a bevel block, and a spring is fixedly connected between the bevel block and the inner wall of the valve body, and one end of the bevel block is fixedly connected to a contact rod, and the other end of the contact rod extends to the outside of the valve body.

[0010] Preferably, the supporting foot is arranged in a U-shaped structure, a gear is fixedly connected to one end of the supporting foot, an adjusting rack is meshingly transmitted on one side of the gear, a threaded rod is threadedly connected to one end of the adjusting rack, and the threaded rod is rotatably connected to the outer wall of the valve body.

[0011] Preferably, a semiconductor sensor is fixedly installed on the inner wall of the monitoring collar, and an alarm is fixedly installed on the outside of the monitoring collar.

[0012] Preferably, the adjusting mechanism includes a rotating frame, which is rotatably connected to the outer wall of the valve body, one end of the rotating frame is fixedly connected to the collecting tank, one side of the rotating frame is fixedly connected to an annular rack, one side of the annular rack is meshingly provided with an adjusting wheel, one end of the adjusting wheel is rotatably connected to the outer wall of the valve body, a worm gear is fixedly provided on the adjusting wheel, one side of the worm gear is meshingly provided with a worm, and the worm is rotatably connected to the outer wall of the valve body.

[0013] Preferably, a piston plate is provided in a sliding manner on the inner wall of the collection tank, and a support rod group is rotatably connected to the bottom end of the piston plate. The other end of the support rod group is rotatably connected to the inner wall of the collection tank. A connecting rod is rotatably connected to the support rod group near the middle, and a hydraulic rod A is rotatably connected to the other end of the connecting rod. The hydraulic rod A is fixedly connected to the inner wall of the collection tank.

[0014] Preferably, the exhaust pipe output end is fixedly connected to one of the connecting hoses, a sealing plug is slidingly provided on the inner wall of the exhaust pipe, the sealing plug is arranged in a conical structure, a plurality of spacing rods are fixedly provided on the top of the sealing plug, a T-shaped rod is fixedly provided on the bottom end of the sealing plug, a tension spring is fixedly provided on the bottom end of the T-shaped rod, the other end of the tension spring is fixedly connected to the inner wall of the collection tank, a sealing sleeve is slidingly provided on the outer wall of the T-shaped rod, and the sealing sleeve is fixedly connected to the piston plate.

[0015] Preferably, a hydraulic rod B is fixedly connected to the bottom end of the suction pipe, and the output end of the hydraulic rod B extends into the suction pipe and is fixedly connected to a piston block, and the piston block is slidingly fitted with the inner wall of the suction pipe. An air injection pipe is fixedly connected to one side of the suction pipe, and the other end of the air injection pipe is fixedly connected to the inner wall of the collection tank, and an air intake pipe is fixedly connected to the top end of the suction pipe, and the air intake pipe is fixedly connected to one of the connecting hoses.

[0016] A method for using a natural gas ball valve system with a leakage alarm function specifically comprises the following steps: S1. When installing a natural gas ball valve, first determine the installation position of the valve body. Turn the adjustment mechanism to allow the collection tank to move to the appropriate position. Then adjust the support legs to support the valve body. Then, place the monitoring collar on the connection between the valve body and the pipeline. S2. During the use of the valve body, when the semiconductor sensor in the monitoring collar detects natural gas leakage at the connection between the valve body and the pipeline, it will control the alarm to sound an alarm; S3. When the connection between the valve body and the pipeline needs to be repaired, first use the suction pipe to extract the residual natural gas in the valve body and the pipeline and inject it into the collection tank for temporary storage; S4. After the maintenance is completed, the natural gas in the collection tank is re-injected into the valve body and pipeline through the exhaust pipe for use.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. By installing a suction pipe and collection tank, residual natural gas can be collected during disassembly and maintenance of the pipelines at both ends of the natural gas ball valve, preventing gas leakage into the air during the disassembly process. This reduces the risk of explosion or fire and significantly improves operational safety. By collecting residual gas, a certain amount of natural gas resources can be recovered, avoiding natural gas waste and reducing energy costs. Recovering natural gas can help save money during long-term maintenance and overhaul.

[0018] 2. By installing an adjustable piston plate in the collection tank, combined with a vent pipe, natural gas from the collection tank can be reinjected into the pipeline after the natural gas ball valve is repaired and installed. This avoids resource waste, effectively recovers and reuses it, reduces the burden on the environment, and saves energy costs. During the repair process, the discharge and reinjection of residual natural gas helps maintain stable pressure in the pipeline. By recovering and reinjecting natural gas, rapid fluctuations in pipeline pressure can be avoided, maintaining balanced system operation.

[0019] 3. The adjustment mechanism allows the angle of the collection tank to be adjusted according to the installation location of the natural gas ball valve, facilitating installation. Furthermore, an anti-blocking mechanism is incorporated into the valve body to seal the gas duct during transportation and installation, preventing blockage. Furthermore, rotatable support feet are provided on the outside of the valve body to provide auxiliary support for the valve body. This not only optimizes working conditions during installation and transportation, but also significantly improves the safety, reliability, and cost-effectiveness of the equipment, making the use and maintenance of the natural gas ball valve more efficient and long-term feasible. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a natural gas ball valve system with a leakage alarm function and its use method of the present invention; Figure 2 This is a partial cross-sectional schematic diagram of the overall structure of a natural gas ball valve system with a leakage alarm function and a method of using the same according to the present invention; Figure 3 This is a partial cross-sectional schematic diagram of the valve body and other structures of a natural gas ball valve system with a leakage alarm function and a method of using the same according to the present invention; Figure 4 This is a schematic structural diagram of an anti-blocking mechanism of a natural gas ball valve system with a leakage alarm function and a method of using the same according to the present invention; Figure 5 This is a schematic diagram of the support leg structure of a natural gas ball valve system with a leakage alarm function and a method of using the same according to the present invention; Figure 6 This is a schematic diagram of the structure of the regulating mechanism of a natural gas ball valve system with a leakage alarm function and a method of using the same; Figure 7 This is a partial cross-sectional schematic diagram of a collection tank structure of a natural gas ball valve system with a leakage alarm function and a method of using the same according to the present invention; Figure 8 The present invention provides a partial cross-sectional schematic diagram of a natural gas ball valve system with a leakage alarm function and a method of using the same, showing a suction pipe and an air guide pipe structure.

[0021] The following are marked in the figure: 1. Valve body; 2. Support foot; 3. Monitoring collar; 4. Adjustment mechanism; 5. Collection tank; 6. Exhaust pipe; 7. Suction pipe; 8. Anti-blocking mechanism; 101. Air guide pipe; 102. Connecting hose; 801. Hole blocking rack; 802. Guide rack; 803. Chute block; 804. Spring; 805. Contact rod; 201. Gear; 202. Adjustment rack; 203. Threaded rod; 301. Alarm ; 401, rotating frame; 402, annular rack; 403, adjusting wheel; 404, worm gear; 405, worm; 501, piston plate; 502, strut group; 503, connecting rod; 504, hydraulic rod A; 601, sealing plug; 602, spacing rod; 603, T-rod; 604, tension spring; 605, sealing sleeve; 701, hydraulic rod B; 702, piston block; 703, air injection pipe; 704, air intake pipe. DETAILED DESCRIPTION

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0023] like Figures 1-8 The natural gas ball valve system with a leakage alarm function shown in the figure and its use method include a valve body 1, and support feet 2 are rotatably connected on both sides of the valve body 1. Monitoring collars 3 are sleeved on the outside of both ends of the valve body 1, and a semiconductor sensor is fixedly installed on the inner wall of the monitoring collar 3. An alarm 301 is fixedly installed on the outside of the monitoring collar 3. An adjustment mechanism 4 is rotatably connected on the valve body 1, and a collection tank 5 is fixedly connected at one end of the adjustment mechanism 4. Exhaust pipes 6 are fixedly connected on both sides of the collection tank 5, and suction pipes 7 are fixedly connected on both sides of the collection tank 5. Anti-blocking mechanisms 8 are slidably fitted on the inner walls of both ends of the valve body 1.

[0024] like Figure 3 As shown, both ends of the valve body 1 are symmetrically structured and are fixedly connected with an air guide tube 101 , and the outer end of the air guide tube 101 is fixedly connected with a connecting hose 102 .

[0025] like Figure 4As shown, the anti-blocking mechanism 8 includes a hole-blocking frame 801, which is movably connected to the inner wall of the air duct 101. A guide frame 802 is fixedly connected to one end of the hole-blocking frame 801. The guide frame 802 is slidably engaged with the inner wall of the valve body 1. A chute block 803 is slidably engaged with one end of the guide frame 802. A spring 804 is fixedly connected between the chute block 803 and the inner wall of the valve body 1. A contact rod 805 is fixedly connected to one end of the chute block 803, and the other end of the contact rod 805 extends to the outside of the valve body 1. The spring 804 drives the hole-blocking frame 801 downward, sealing the opening of the air duct 101 and preventing debris from falling into the air duct 101 during transportation and installation of the valve body 1. The valve body 1 is connected to the pipeline. At this time, one end of the pipeline will contact and squeeze the contact rod 805, so that the contact rod 805 drives the connected inclined groove block 803 to move. At this time, the inclined groove block 803 will drive the hole blocking frame 801 connected to the guide frame 802 to move upward through the inclined groove, so that the air guide pipe 101 is conductive.

[0026] like Figure 5 As shown, the supporting foot 2 is arranged in a U-shaped structure, and a gear 201 is fixedly connected to one end of the supporting foot 2, and an adjusting rack 202 is meshed and transmitted on one side of the gear 201, and a threaded rod 203 is threadedly connected to one end of the adjusting rack 202, and the threaded rod 203 is rotatably connected to the outer wall of the valve body 1.

[0027] like Figure 3 As shown, a semiconductor sensor is fixedly installed on the inner wall of the monitoring collar 3 , and an alarm 301 is fixedly installed on the outside of the monitoring collar 3 .

[0028] like Figure 6 As shown, the adjustment mechanism 4 includes a rotating frame 401, which is rotatably connected to the outer wall of the valve body 1. One end of the rotating frame 401 is fixedly connected to the collection tank 5. An annular rack 402 is fixedly connected to one side of the rotating frame 401. An adjusting wheel 403 is meshingly provided on one side of the annular rack 402. One end of the adjusting wheel 403 is rotatably connected to the outer wall of the valve body 1. A worm gear 404 is fixedly connected to the adjusting wheel 403. A worm 405 is meshingly provided on one side of the worm gear 404. The worm 405 is rotatably connected to the outer wall of the valve body 1. By rotating the worm gear 405, the worm gear 405 drives the adjusting wheel 403 connected to the worm gear 404 to rotate, so that the adjusting wheel 403 can drive the rotating frame 401 connected to the annular rack 402 to rotate, thereby driving the collection tank 5 to rotate to a suitable position.

[0029] like Figure 7As shown, a piston plate 501 is slidably mounted on the inner wall of the collection tank 5. A support rod assembly 502 is rotatably mounted on the bottom end of the piston plate 501. The other end of the support rod assembly 502 is rotatably mounted on the inner wall of the collection tank 5. A connecting rod 503 is rotatably mounted near the middle of the support rod assembly 502. The other end of the connecting rod 503 is rotatably mounted on a hydraulic rod A504, which is fixedly mounted on the inner wall of the collection tank 5. Hydraulic rod A504 drives the connecting rod 503 to move, causing the other end of the connecting rod 503 to rotate the support rod assembly 502, which in turn drives the piston plate 501 upward, thereby re-injecting the natural gas collected in the collection tank 5 into the valve body 1 and the pipeline.

[0030] By providing the suction pipe 7 and collection tank 5, residual natural gas can be collected during disassembly and maintenance of the pipelines at both ends of the natural gas ball valve, preventing gas leakage into the air during the disassembly process. This reduces the risk of explosion or fire and significantly improves operational safety. By collecting residual gas, a certain amount of natural gas resources can be recovered, avoiding natural gas waste and reducing energy costs. Recovering natural gas can help save money during long-term maintenance and overhaul.

[0031] like Figure 8 As shown, the output end of the exhaust pipe 6 is fixedly connected to one of the connecting hoses 102. A sealing plug 601 is slidably mounted on the inner wall of the exhaust pipe 6. The sealing plug 601 has a conical structure, with multiple spacing rods 602 fixedly mounted on the top of the sealing plug 601. A T-shaped rod 603 is fixedly mounted on the bottom of the sealing plug 601. The bottom end of the T-shaped rod 603 is in movable contact with the piston plate 501. A tension spring 604 is fixedly mounted on the bottom end of the T-shaped rod 603. The other end of the tension spring 604 is fixedly mounted on the inner wall of the collection tank 5. A sealing sleeve 605 is slidably mounted on the outer wall of the T-shaped rod 603. The sealing sleeve 605 is intersecting and fixedly mounted on the piston plate 501. A one-way valve is installed in the exhaust pipe 6. When the piston plate 501 moves upward, the T-shaped rod 603 is unrestricted. Under the action of the tension spring 604, the sealing plug 601 connected to the T-shaped rod 603 moves upward, and the spacing rods 602 block the sealing plug 601 from the outlet of the exhaust pipe 6.

[0032] like Figure 8As shown, a hydraulic rod B701 is fixedly attached to the bottom end of the suction pipe 7. The output end of hydraulic rod B701 extends into the suction pipe 7 and is fixedly attached to a piston block 702. The piston block 702 slides with the inner wall of the suction pipe 7. A gas injection pipe 703 is fixedly attached to one side of the suction pipe 7. The other end of the gas injection pipe 703 penetrates and is fixedly connected to the inner wall of the collection tank 5. An air inlet pipe 704 is fixedly attached to the top end of the suction pipe 7. The air inlet pipe 704 is fixedly connected to one of the connecting hoses 102. Check valves are installed in the gas injection pipe 703 and the gas inlet pipe 704. The hydraulic rod B701 drives the piston block 702 to move back and forth, sucking the natural gas remaining in the valve body 1 and the pipeline on one side into the suction pipe 7 through the connecting hose 102, and then injecting it into the collection tank 5 through the gas injection pipe 703.

[0033] A method for using a natural gas ball valve system with a leakage alarm function specifically comprises the following steps: S1. When installing a natural gas ball valve, first determine the installation position of the valve body 1. Rotate the adjustment mechanism 4 to rotate the collection tank 5 to the appropriate position. Then adjust the support legs 2 to support the valve body 1. Then, place the monitoring collar 3 on the connection between the valve body 1 and the pipeline. S2. During the use of the valve body 1, when the semiconductor sensor in the monitoring collar 3 detects a natural gas leak at the connection between the valve body 1 and the pipeline, it controls the alarm 301 to sound an alarm; S3. When the connection between the valve body 1 and the pipeline needs to be repaired, the residual natural gas in the valve body 1 and the pipeline is first extracted using the suction pipe 7 and injected into the collection tank 5 for temporary storage; S4. After the maintenance is completed, the natural gas in the collection tank 5 is re-injected into the valve body 1 and the pipeline through the exhaust pipe 6 for use.

[0034] Working principle: When installing the valve body 1, the angles of the collection tank 5 and the support foot 2 are adjusted according to the installation position. First, the worm 405 is rotated, so that the worm 405 drives the adjusting wheel 403 connected to the worm gear 404 to rotate, so that the adjusting wheel 403 can drive the rotating frame 401 connected to the annular rack 402 to rotate, thereby driving the collection tank 5 to rotate to the appropriate position; Then, the threaded rod 203 is rotated so that the threaded rod 203 drives the adjustment rack 202 to move, so that the adjustment rack 202 drives the support foot 2 connected to the gear 201 to rotate to a suitable angle, thereby providing auxiliary support for the valve body 1; Then, the valve body 1 is connected to the pipeline. At this time, one end of the pipeline will contact and squeeze the contact rod 805, causing the contact rod 805 to drive the connected chute block 803 to move. At this time, the chute block 803 will drive the hole blocking frame 801 connected to the guide frame 802 to move upward through the chute, so that the air guide pipe 101 is open. During the use of the valve body 1, when the semiconductor sensor in the monitoring collar 3 detects that there is a natural gas leak at the connection between the valve body 1 and the pipeline, the alarm 301 is used to sound an alarm and timely repair is carried out; During maintenance, first close the valve body 1, then use the hydraulic rod B701 to drive the piston block 702 to move back and forth, and suck the natural gas remaining in the valve body 1 and the pipeline on one side into the suction pipe 7 through the connecting hose 102, and then inject it into the collection tank 5 through the gas injection pipe 703 for collection; Then, after inspecting the connection end of the valve body 1 and the pipeline, the hydraulic rod A504 is used to drive the connecting rod 503 to move, so that the other end of the connecting rod 503 drives the support rod group 502 to rotate, so that the support rod group 502 can drive the piston plate 501 to move upward. At this time, the T-shaped rod 603 is not restricted, and under the action of the tension spring 604, it will drive the sealing plug 601 connected to the T-shaped rod 603 to move upward, and then the spacing rod 602 will block the outlet of the sealing plug 601 and the exhaust pipe 6. Then, when the piston plate 501 continues to move upward, the natural gas collected in the collection tank 5 will be re-injected into the valve body 1 and the pipeline.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural gas ball valve system with a leakage alarm function, comprising a valve body (1), characterized in that: Support feet (2) are rotatably connected to both sides of the valve body (1), monitoring collars (3) are sleeved on both ends of the valve body (1), a semiconductor sensor is fixedly mounted on the inner wall of the monitoring collar (3), and an alarm (301) is fixedly mounted on the outside of the monitoring collar (3), an adjustment mechanism (4) is rotatably connected to the valve body (1), one end of the adjustment mechanism (4) is fixedly connected to a collecting tank (5), exhaust pipes (6) are fixedly connected to both sides of the collecting tank (5), and suction pipes (7) are fixedly connected to both sides of the collecting tank (5), and anti-blocking mechanisms (8) are slidably fitted on the inner walls of both ends of the valve body (1).

2. The natural gas ball valve system with leakage alarm function according to claim 1, characterized in that: Both ends of the valve body (1) are symmetrically structured and are provided with an air guide tube (101) running through and fixedly connected thereto. The outer end of the air guide tube (101) is provided with a connecting hose (102) fixedly connected thereto.

3. The natural gas ball valve system with leakage alarm function according to claim 2, characterized in that: The anti-blocking mechanism (8) comprises a hole-blocking frame (801), the hole-blocking frame (801) is movably plugged into the inner wall of the air guide tube (101), one end of the hole-blocking frame (801) is fixedly connected to a guide frame (802), the guide frame (802) is slidingly matched with the inner wall of the valve body (1), one end of the guide frame (802) is slidingly matched with a chute block (803), a spring (804) is fixedly connected between the chute block (803) and the inner wall of the valve body (1), one end of the chute block (803) is fixedly connected to a contact rod (805), and the other end of the contact rod (805) extends to the outside of the valve body (1).

4. The natural gas ball valve system with leakage alarm function according to claim 1, characterized in that: The support foot (2) is provided in a U-shaped structure, one end of the support foot (2) is fixedly connected to a gear (201), one side of the gear (201) is meshed and driven with an adjustment rack (202), one end of the adjustment rack (202) is threadedly connected to a threaded rod (203), and the threaded rod (203) is rotatably connected to the outer wall of the valve body (1).

5. The natural gas ball valve system with leakage alarm function according to claim 1, characterized in that: The regulating mechanism (4) comprises a rotating frame (401), wherein the rotating frame (401) is rotatably connected to the outer wall of the valve body (1), one end of the rotating frame (401) is fixedly connected to the collecting tank (5), one side of the rotating frame (401) is fixedly connected to an annular rack (402), one side of the annular rack (402) is meshingly provided with an regulating wheel (403), one end of the regulating wheel (403) is rotatably connected to the outer wall of the valve body (1), a worm gear (404) is fixedly provided on the regulating wheel (403), one side of the worm gear (404) is meshingly provided with a worm (405), and the worm gear (405) is rotatably connected to the outer wall of the valve body (1).

6. The natural gas ball valve system with leakage alarm function according to claim 2, characterized in that: The inner wall of the collecting tank (5) is provided with a piston plate (501) in a sliding manner, and a support rod group (502) is rotatably connected to the bottom end of the piston plate (501), and the other end of the support rod group (502) is rotatably connected to the inner wall of the collecting tank (5). A connecting rod (503) is rotatably connected to a position near the middle of the support rod group (502), and a hydraulic rod A (504) is rotatably connected to the other end of the connecting rod (503), and the hydraulic rod A (504) is fixedly connected to the inner wall of the collecting tank (5).

7. The natural gas ball valve system with leakage alarm function according to claim 6, characterized in that: The output end of the exhaust pipe (6) is fixedly connected to one of the connecting hoses (102), and a sealing plug (601) is provided on the inner wall of the exhaust pipe (6) in a sliding manner. The sealing plug (601) is provided in a conical structure, and a plurality of spacing rods (602) are fixedly connected to the top of the sealing plug (601). A T-shaped rod (603) is fixedly connected to the bottom end of the sealing plug (601), and a tension spring (604) is fixedly connected to the bottom end of the T-shaped rod (603). The other end of the tension spring (604) is fixedly connected to the inner wall of the collection tank (5), and a sealing sleeve (605) is provided on the outer wall of the T-shaped rod (603) in a sliding manner. The sealing sleeve (605) is fixedly connected to the piston plate (501).

8. The natural gas ball valve system with leakage alarm function according to claim 2, characterized in that: The bottom end of the suction pipe (7) is fixedly connected to a hydraulic rod B (701), the output end of the hydraulic rod B (701) extends into the suction pipe (7) and is fixedly connected to a piston block (702), the piston block (702) is slidingly matched with the inner wall of the suction pipe (7), one side of the suction pipe (7) is fixedly connected to an air injection pipe (703), the other end of the air injection pipe (703) is fixedly connected to the inner wall of the collection tank (5), and the top end of the suction pipe (7) is fixedly connected to an air intake pipe (704), and the air intake pipe (704) is fixedly connected to one of the connecting hoses (102).

9. A method for using a natural gas ball valve system with a leakage alarm function, using the natural gas ball valve system with a leakage alarm function according to any one of claims 1 to 8, specifically comprising the following steps: S1. When installing a natural gas ball valve, first determine the installation position of the valve body (1), rotate the adjustment mechanism (4) to allow the collection tank (5) to be rotated to a suitable position, then adjust the support foot (2) to support the valve body (1), and then put the monitoring collar (3) on the connection between the valve body (1) and the pipeline; S2. During the use of the valve body (1), when the semiconductor sensor in the monitoring collar (3) detects a natural gas leak at the connection between the valve body (1) and the pipeline, the alarm (301) is controlled to sound an alarm; S3. When the connection between the valve body (1) and the pipeline needs to be repaired, the residual natural gas in the valve body (1) and the pipeline is first extracted using the suction pipe (7) and injected into the collection tank (5) for temporary storage; S4. After the repair is completed, the natural gas in the collection tank (5) is re-injected into the valve body (1) and the pipeline through the exhaust pipe (6) for use.

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