A gas wellhead device performance test device and method

Abstract

The application provides a kind of gas production wellhead device performance test device and method.A kind of gas production wellhead device performance test device, comprising: frame, clamping assembly, inflation assembly and detection assembly, the clamping assembly and the inflation assembly are installed on the frame, the detection assembly is communicated with the inflation assembly.The clamping assembly plays a role in clamping and fixing products, which is conducive to maintaining the stability of subsequent detection of products.By designing the device structure containing clamping assembly, inflation assembly and the like, stable clamping of the wellhead device, gas pressure detection and detection process are realized, so as to complete the gas tightness detection of the gas production wellhead device, ensure that no leakage occurs during subsequent use, and ensure the quality and use safety of the gas production wellhead device.

Description

Technical Field

[0001] This invention relates to the field of gas wellhead equipment technology, and in particular to a performance testing device and method for gas wellhead equipment. Background Technology

[0002] Wellhead equipment is the core equipment installed at the wellhead after oil and gas drilling. It is mainly used to control and regulate the production activities of oil, gas, and water wells. Its core functions include sealing the wellhead, suspending the tubing string, controlling fluid pressure and direction, and as an important component of the well control system, ensuring the safe conduct of drilling operations. According to petroleum industry standards, this device must be installed at the very top of the well, in direct contact with the medium inside the well to achieve real-time control. Typical structures include blowout preventer assemblies, four-way valves, casing heads, and other components, and involve special tools, instruments, and related manifold systems. The core function of wellhead equipment is to control the pressure and direction of fluids in oil and gas wells to prevent safety accidents such as blowouts. At the same time, it can regulate the production parameters of oil, gas, and water wells, and achieve flow monitoring and pressure balance through valves and instruments. After the gas production wellhead equipment is manufactured, it needs to be subjected to performance testing, such as testing the airtightness of the gas production wellhead equipment, which helps to avoid leakage during subsequent use of the gas production wellhead equipment.

[0003] Existing patent CN117268655 discloses an integrated device for maintenance and testing of downhole tools, relating to the field of downhole tools. It includes a testing box with a sealing cover on top. Sealing rings are fixedly connected to the four sides of the sealing cover. Rubber gaskets are fixedly connected to the bottom surface of the sealing cover and the lower side of the inner wall of the testing box. Sealing airbags are fixedly connected to the center of the bottom surface of the sealing cover and the center of the lower side of the inner wall of the testing box. Mounting rings are fixedly connected to the upper and lower sides of the inner walls of the two sealing airbags. This invention, by setting up a testing box, uses an air-filled method for testing the well casing. Therefore, when there are small gaps inside the well casing, some gas will enter the testing box through these gaps. The testing box is pre-evacuated. When air enters the testing box, the pressure change in the testing box is recorded via a second pressure gauge, thus detecting the sealing performance of the well casing and increasing the comprehensiveness of the testing. The principle of existing patent one is to use a testing chamber to test the well casing by inflating it with air. Therefore, if there are small gaps inside the well casing, some gas will enter the testing chamber through these gaps. The testing chamber is pre-evacuated, and when air enters, the pressure inside the chamber changes as indicated by a second pressure gauge, thus detecting the sealing performance of the well casing and increasing the comprehensiveness of the test. However, existing patent one tests well casings in use, does not require clamping devices, and is not suitable for testing the airtightness of wellhead equipment. Its testing efficiency is low, the testing chamber is difficult to achieve a vacuum, and small gas leaks into the testing chamber are difficult to detect, resulting in poor accuracy.

[0004] Existing patent 2, CN116735466, discloses a device and method for evaluating stress corrosion of well tubing under alternating loads. The device includes: a base, a telescopic mechanism, a reaction vessel, a temperature sensor, an internal pressure gauge, a central control system, a heating sleeve, a top cover, an upper clamp, a lower clamp, an internal pressure relief valve, and a gas supply system. The telescopic mechanism and the reaction vessel are mounted on the base. The top of the reaction vessel has an opening, and the top cover is installed at the top opening. The upper clamp is slidably mounted on the top cover, with its bottom located inside the reaction vessel. The top of the upper clamp is connected to the telescopic mechanism, and the lower clamp is installed at the bottom of the reaction vessel. The heating sleeve is fitted onto the outer wall of the reaction vessel. The temperature sensor, internal pressure gauge, internal pressure relief valve, and gas supply system are connected to the reaction vessel via pipelines. The central control system is connected to the telescopic mechanism, temperature sensor, internal pressure gauge, and gas supply system. The principle of existing patent two is to fix a wellbore sample in a device using two clamps, and apply periodic tension to the sample through the extension and retraction of a telescopic mechanism to simulate the stress state of a reservoir well under alternating loads. Corrosive gas is then injected, and the corrosion rate is evaluated by measuring the mass and thickness of the sample before and after corrosion. This allows for the simulation and evaluation of the corrosion status and behavior of the wellbore material, providing a theoretical basis for exploring the corrosion mechanism of wellbore tubing under alternating stress, and providing guidance for the selection of tubing materials, assessment of remaining strength and remaining life of tubing, and evaluation of wellbore integrity. It can evaluate the impact of different loads, temperatures, or corrosive media on the corrosion rate and behavior by adjusting the load, temperature, or corrosive medium ratio individually, while keeping other parameters constant. However, existing patent two targets the corrosion resistance testing of wellbore, uses a corrosive gas, and measures the dimensional changes of the wellbore after corrosion, making it unsuitable for the airtightness testing of wellhead equipment.

[0005] Existing patent three, CN117189016, discloses a gas wellhead device capable of automatic detection and early warning. It includes an end cap and two arc-shaped positioning sleeves, both slidably connected to the end cap. The end cap can cover the wellhead. Positioning clips are provided on the inner side of each arc-shaped positioning sleeve, and a linkage mechanism connects the positioning clips and the arc-shaped positioning sleeves. The end cap is connected to a gas outlet pipe, and a sealing mechanism is slidably connected in the wellhead. The sealing mechanism can seal one end of the gas outlet pipe under air pressure. Simultaneously, a thrust mechanism is provided between the sealing mechanism and the positioning clips. An air bladder is annularly arranged on each arc-shaped positioning sleeve. This invention uses the annular sleeve to drive the end seat to move vertically upwards. The end seat drives the rubber head to seal one end of the gas outlet pipe. Simultaneously, the air guiding component delivers air to the air bladder, thereby ensuring a tight fit between the air bladder and the outer wall of the wellhead, preventing gas leakage and potential safety hazards. The principle of existing patent three is that when the gas pressure in the wellhead increases, the gas guiding component delivers air into the airbag, thereby making the airbag fit tightly against the outer wall of the wellhead. This solves the problem that the sealing device of existing gas production wellhead devices is prone to expansion and leakage under gas pressure. However, the purpose of existing patent three is to use the airbag to assist in supporting the sealing device of the wellhead device during use, thereby increasing the load strength of the sealing device and preventing leakage due to expansion under high pressure. It is not suitable for airtightness testing of wellhead devices.

[0006] Existing technologies for gas wellhead equipment suffer from problems such as insufficient clamping stability, low testing efficiency, and poor accuracy during airtightness testing after processing. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a performance testing device and method for gas wellhead equipment, which addresses the shortcomings of the prior art.

[0008] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a performance testing device for a gas wellhead device, comprising: a frame, a clamping component, an inflation component, and a testing component, wherein the clamping component and the inflation component are both installed on the frame, and the testing component is connected to the inflation component.

[0009] The beneficial effects of adopting the technical solution of this invention are: the clamping component plays a role in clamping and fixing the product, which is conducive to maintaining the stability of the product in subsequent testing. By designing a device structure that includes clamping components, air-filling components, etc., stable clamping of the wellhead device, air pressure detection, and testing process are achieved, thereby completing the airtightness test of the gas production wellhead device, ensuring that no leakage will occur during its subsequent use, and ensuring the quality and safety of the gas production wellhead device.

[0010] Furthermore, the clamping assembly is mounted on the frame via a lifting assembly.

[0011] The beneficial effects of adopting the above-mentioned further technical solution are: it facilitates the adjustment of the height of the clamping component through the lifting component according to actual needs, and facilitates the clamping component to clamp wellhead devices of different sizes, thereby improving applicability.

[0012] Furthermore, the lifting assembly includes: a pair of support seats, a support plate, and a pair of stabilizing rods. The pair of stabilizing rods are installed at the bottom of the frame, the support plate is slidably installed on the pair of stabilizing rods, the pair of support seats are both connected to the support plate, and the clamping assembly is connected to the pair of support seats.

[0013] The beneficial effects of adopting the above-mentioned further technical solutions are: the structural design of the lifting component simplifies the structure, facilitates installation and maintenance, and the stabilizing rod facilitates the stable sliding of the support plate, thereby improving stability and reliability.

[0014] Furthermore, the clamping assembly includes: a pair of first telescopic members and a pair of clamping plates, the pair of first telescopic members being respectively mounted on a pair of support seats, and the pair of clamping plates being respectively connected to the pair of first telescopic members.

[0015] The beneficial effect of adopting the above-mentioned further technical solution is that by driving the mounting plate and clamping plate on the same side to move synchronously through the first telescopic component, the product can be clamped and fixed, which is conducive to maintaining the stability of subsequent product testing.

[0016] Furthermore, each pair of the first telescopic components is connected to a pair of clamping plates via a pair of mounting plates, and each pair of clamping plates is equipped with a buffer pad, and the clamping plates have an arc-shaped structure.

[0017] The beneficial effects of adopting the above-mentioned further technical solution are: the buffer pad provides cushioning, preventing the clamp from damaging the wellhead device and improving reliability. The clamp has an arc-shaped structure, which facilitates the fitting of the clamp to the wellhead device and makes it easier to clamp the wellhead device.

[0018] Furthermore, the first telescopic component is a first cylinder, and the buffer pad is a rubber pad.

[0019] The beneficial effects of adopting the above-mentioned further technical solution are: by driving the mounting plate and clamping plate on the same side to move synchronously through the first cylinder, the product can be clamped and fixed, which helps to maintain the stability of the product during subsequent testing. The setting of the cylinder and rubber pad simplifies the structure, reduces costs, and facilitates installation and maintenance.

[0020] Furthermore, the frame is located between a pair of support seats, and a second telescopic component is installed at the bottom of the frame, the second telescopic component being connected to the support plate.

[0021] The advantages of adopting the above-mentioned further technical solution are: a compact structure and reduced space occupancy. The inclusion of the second telescopic component facilitates automatic lifting and lowering of the support plate, improving automation.

[0022] Furthermore, the second telescopic component is a second cylinder, and the second telescopic component is located between the pair of stabilizing rods.

[0023] The beneficial effects of adopting the above-mentioned further technical solution are: the cylinder configuration improves efficiency and reduces costs. The second telescopic component is located between a pair of stabilizing rods, which facilitates the stable sliding of the support plate along the stabilizing rods, prevents the support plate from jamming with the stabilizing rods, and improves stability and reliability.

[0024] Furthermore, the inflation assembly includes a plug and an air inlet pipe, both of which are slidably mounted on the frame, and the air inlet pipe is connected to an air guide assembly.

[0025] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the plug is used to seal one end of the wellhead device, and the air inlet pipe is used to pressurize the wellhead device with air, which facilitates air tightness testing. The end of the air inlet pipe away from the plug is connected to an air guiding component for pressing air into the wellhead device.

[0026] Furthermore, a support frame is installed on the frame, an mounting frame is installed on the support frame, and a pair of mounting blocks are slidably installed on the mounting frame. The plug and the air intake pipe are respectively installed on the pair of mounting blocks.

[0027] The beneficial effects of adopting the above-mentioned further technical solution are: the setting of the support frame, the mounting frame and the mounting block facilitates the pipe blocking and the sliding installation of the air intake pipe on the frame, the structure is compact, the structure is simplified, and it is easy to install and maintain.

[0028] Furthermore, baffles are installed on both the plug and the air intake pipe, and sealing gaskets are installed on the baffles.

[0029] The beneficial effects of adopting the above-mentioned further technical solution are: the baffles fitted on the side walls of the plug and the air inlet pipe can seal both ends of the product and clamp and fix the product, facilitating subsequent testing of the product's airtightness. The sealing gasket is used to improve the sealing performance.

[0030] Furthermore, a double-threaded screw is rotatably mounted in the mounting frame, and a pair of support blocks are threaded onto the double-threaded screw, with the pair of mounting blocks respectively connected to the pair of support blocks.

[0031] The beneficial effect of adopting the above-mentioned further technical solution is that the double-threaded screw drives the two support blocks to move relative to each other, thereby causing the plug and the air inlet pipe to move relative to each other, so that the plug and the air inlet pipe enter the interior of the opposite end of the product.

[0032] Furthermore, a protective box is installed at one end of the mounting frame, and a geared motor is installed in the protective box. The geared motor is connected to the double-threaded screw drive.

[0033] The beneficial effect of adopting the above-mentioned further technical solution is that the double-tooth screw is driven to rotate by the geared motor, and the double-tooth screw drives the two support blocks to move relative to each other, thereby causing the plug and the air inlet pipe to move relative to each other, so that the plug and the air inlet pipe enter the interior of the opposite end of the product.

[0034] Furthermore, a pair of mounting blocks are respectively connected to a pair of support blocks via a pair of telescopic rods.

[0035] The beneficial effects of adopting the above-mentioned further technical solution are as follows: After the product is fixed, the mounting block on the same side is lowered by driving the telescopic rod, causing the plug and air inlet pipe to move to the opposite side of the product. The telescopic rod facilitates the adjustment of the height of the plug and air inlet pipe according to actual needs, improving applicability.

[0036] Furthermore, the mounting frame is provided with a pair of sliding grooves, in which sliders are slidably mounted, and the pair of sliders are respectively connected to a pair of support blocks.

[0037] The beneficial effect of adopting the above-mentioned further technical solution is that the cooperation between the slider and the groove helps to maintain the stability of the support block movement and prevent the support block from shaking.

[0038] Furthermore, the pair of sliders are respectively connected to the pair of support blocks by bolts. A pair of positioning blocks are installed on the sliders, and a pair of positioning grooves adapted to the positioning blocks are provided on the support blocks. The pair of positioning blocks are installed in the pair of positioning grooves.

[0039] The beneficial effects of adopting the above-mentioned further technical solution are: the slider and the support block on the same side are fixed by bolts, which facilitates subsequent disassembly and assembly. When installing the slider, the worker places the slider in the groove and makes the positioning block installed on one side of the slider engage with the positioning groove opened on the opposite side of the support block, which can play the role of positioning the slider and facilitate subsequent fixing.

[0040] Furthermore, the air guiding assembly includes: an installation pipe, a connecting pipe, a conduit, a telescopic hose, and an air compressor. A control valve is installed on the air intake pipe. The installation pipe is connected to the air intake pipe. The connecting pipe is connected to the installation pipe. The conduit is connected to the connecting pipe. The telescopic hose is connected to the conduit. The air compressor is connected to the telescopic hose.

[0041] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Air is compressed by an air compressor. The control valve installed on the side wall of the air inlet pipe is opened, and the compressed air enters the air inlet pipe through a conduit, telescopic hose, connecting pipe, and installation pipe. The compressed air then enters the product's interior through the air inlet pipe. A pressure gauge installed on the side wall of the air inlet pipe detects the internal air pressure. Once the required test value is reached, the control valve installed on the side wall of the air inlet pipe is closed, thus stopping the introduction of compressed air into the product. The telescopic hose is used to accommodate adjustments to the position of the air inlet pipe.

[0042] Furthermore, the detection component is a barometer, and the detection component is installed on the air intake pipe.

[0043] The beneficial effect of adopting the above-mentioned further technical solution is that the pressure gauge value is detected in real time by the control mechanism of the existing technology. When the pressure gauge value remains unchanged, the airtightness of the product is good. When the pressure gauge value changes, it indicates that the airtightness of the product is poor, which can play the role of detecting the airtightness of the product.

[0044] Furthermore, a support plate is installed on the frame, and an installation port is provided on the support plate, into which the telescopic hose is installed.

[0045] The beneficial effects of adopting the above-mentioned further technical solution are: the support plate is used to support the telescopic hose and prevent the telescopic hose from obstructing other components. The telescopic hose is used to adapt to the position adjustment of the air intake pipe.

[0046] Furthermore, a filter is installed in the installation tube.

[0047] The beneficial effects of adopting the above-mentioned further technical solution are: the installation pipe is equipped with a filter, which can filter out moisture and dust in the compressed air, and help to prevent the product from being damaged by moisture.

[0048] Furthermore, an arc-shaped plate is hinged to the mounting tube, and the arc-shaped plate is detachably connected to the mounting tube via a positioning component.

[0049] The beneficial effect of adopting the above-mentioned further technical solution is that the arc plate is hinged to the installation tube, which makes it easy for the staff to place the filter into the installation tube through the notch. Then the staff flips the arc plate so that the arc plate fits against the side opposite to the notch.

[0050] Furthermore, the positioning assembly includes: a pair of inserts, a pair of movable slots, a pair of elastic members, a pair of positioning rods, and a pair of slots adapted to the inserts. The pair of inserts are mounted on the arc-shaped plate. The pair of movable slots and the pair of slots are both disposed on the mounting tube. The pair of movable slots communicate with the pair of slots respectively. The pair of positioning rods are slidably mounted in the pair of movable slots respectively. The pair of elastic members are mounted in the pair of movable slots respectively. The two ends of the elastic members abut against the positioning rods and the movable slots respectively. The inserts are provided with positioning holes adapted to the positioning rods.

[0051] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the insert block installed on one side of the arc plate engages with the slot opened in the inner wall of the recess. When the insert block moves into the slot, the insert block pushes the positioning rod on the same side to slide into the movable groove, and the positioning rod pushes the spring on the same side to retract. When the insert block and the slot are engaged, the positioning rod returns to its original position under the elastic force of the spring on the same side, and makes the positioning rod engage with the positioning hole opened in the side wall of the insert block, thus playing the role of positioning the insert block, which facilitates the subsequent fixation of the arc plate and the mounting tube by fasteners of the existing technology.

[0052] Furthermore, the elastic component is a spring; a limiting block is installed on the side wall of the positioning rod, and a limiting groove adapted to the limiting block is provided in the movable groove, and the limiting block is slidably installed in the limiting groove.

[0053] The beneficial effect of adopting the above-mentioned further technical solution is that when the positioning rod slides in the movable groove on the same side, the positioning rod slides in the limiting groove on the same side with the limiting block. Through the cooperation of the limiting block and the limiting groove, it is beneficial to maintain the stability of the movement of the positioning rod.

[0054] Furthermore, a pressure relief valve is installed on the plug.

[0055] The beneficial effect of adopting the above-mentioned further technical solution is that the gas inside the product can be discharged through the pressure relief valve installed on the side wall of the plug, thereby achieving the effect of pressure relief and facilitating subsequent disassembly.

[0056] Furthermore, multiple columns are installed at the bottom of the frame, and a conveyor belt is installed inside the frame.

[0057] The beneficial effects of adopting the above-mentioned further technical solution are: multiple columns are used to support the frame, increasing load-bearing capacity; and a conveyor belt is used to transport the product to the clamping component area, improving automation.

[0058] In addition, the present invention also provides a performance test method for a gas wellhead device. Based on the above-mentioned performance test device for a gas wellhead device, the performance test method for a gas wellhead device includes: S1, clamping the wellhead device with a clamping component; S2, inflating the wellhead device with an air-inflating component; S3, detecting the sealing performance of the wellhead device with a detection component.

[0059] The beneficial effects of adopting the technical solution of this invention are: the clamping component plays a role in clamping and fixing the product, which is conducive to maintaining the stability of the product in subsequent testing. By designing a device structure that includes clamping components, air-filling components, etc., stable clamping of the wellhead device, air pressure detection, and testing process are achieved, thereby completing the airtightness test of the gas production wellhead device, ensuring that no leakage will occur during its subsequent use, and ensuring the quality and safety of the gas production wellhead device.

[0060] Further, step S1 includes: S11, conveying the wellhead device to the bottom of the support frame via a conveyor belt; S12, clamping the wellhead device via a clamping assembly.

[0061] The beneficial effects of adopting the above-mentioned further technical solution are: the conveyor belt is used to transport the product to the clamping component area, improving automation. The clamping component serves to hold and fix the product, which helps maintain the stability of subsequent product testing.

[0062] Further, step S2 includes: S21, driving the double-toothed screw to rotate by a geared motor, so that the plug and the air inlet pipe are connected to both ends of the wellhead device; S22, filling the wellhead device with air through the air guide assembly.

[0063] The beneficial effects of adopting the above-mentioned further technical solution are: the double-threaded screw drives the two support blocks to move relative to each other, thereby causing the plug and the air inlet pipe to move relative to each other, so that the plug and the air inlet pipe enter the interior of the opposite end of the product, which facilitates the filling of gas into the wellhead device through the gas guiding assembly.

[0064] Further, step S22 includes: S221, compressing air using an air compressor; S222, opening a control valve to allow compressed air to enter the wellhead device through the air inlet pipe; S223, detecting whether the air pressure inside the wellhead device has reached a preset value using a detection component; S224, closing the control valve when the air pressure inside the wellhead device reaches the preset value.

[0065] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Air is compressed by an air compressor. The control valve installed on the side wall of the air inlet pipe is opened, and the compressed air enters the air inlet pipe through a conduit, telescopic hose, connecting pipe, and installation pipe. The compressed air then enters the product's interior through the air inlet pipe. A pressure gauge installed on the side wall of the air inlet pipe detects the internal air pressure. Once the required test value is reached, the control valve installed on the side wall of the air inlet pipe is closed, thus stopping the introduction of compressed air into the product. The telescopic hose is used to accommodate adjustments to the position of the air inlet pipe.

[0066] Furthermore, step S3 includes: when the value of the pressure gauge remains unchanged, the airtightness of the wellhead device is good; when the value of the pressure gauge changes, the airtightness of the wellhead device is abnormal.

[0067] The beneficial effect of adopting the above-mentioned further technical solution is that the pressure gauge value is detected in real time by the control mechanism of the existing technology. When the pressure gauge value remains unchanged, the airtightness of the product is good. When the pressure gauge value changes, it indicates that the airtightness of the product is poor, which can play the role of detecting the airtightness of the product.

[0068] Furthermore, after step S3, step S4 is followed by: after the test is completed, pressure is released through the pressure relief valve.

[0069] The beneficial effect of adopting the above-mentioned further technical solution is that the gas inside the product can be discharged through the pressure relief valve installed on the side wall of the plug, thereby achieving the effect of pressure relief and facilitating subsequent disassembly.

[0070] The advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0071] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0072] Figure 1 This is one of the structural schematic diagrams of the performance testing device for gas wellhead equipment provided in an embodiment of the present invention.

[0073] Figure 2 for Figure 1 A magnified view of the structure shown at point A.

[0074] Figure 3 This is the second schematic diagram of the performance testing device for the gas wellhead equipment provided in the embodiments of the present invention.

[0075] Figure 4 This is a cross-sectional view of the mounting frame and protective box provided in an embodiment of the present invention.

[0076] Figure 5 for Figure 4 The diagram shows a magnified view of the structure at point B.

[0077] Figure 6 This is a cross-sectional view of the mounting pipe provided in an embodiment of the present invention.

[0078] Figure 7 for Figure 6 A magnified view of the structure shown at point C.

[0079] Explanation of reference numerals: 1. Frame; 2. Conveyor belt; 3. Support frame; 4. Mounting frame; 5. Protective box; 6. Mounting block; 7. Pipe plug; 8. Telescopic rod; 9. Mounting plate; 10. First cylinder; 11. Support base; 12. Support plate; 13. Second cylinder; 14. Mounting pipe; 15. Connecting pipe; 16. Support plate; 17. Conduit; 18. Telescopic hose; 19. Air compressor; 20. Inlet pipe; 21. Baffle; 22. Clamping plate; 23. Pressure gauge; 24. Control valve; 25. Gear motor; 26. Support block; 27. Slider; 28. Double-threaded screw; 29. ​​Positioning block; 30. Arc plate; 31. Insert block; 32. Filter; 33. Movable groove; 34. Spring; 35. Positioning rod; 36. Slot. Detailed Implementation

[0080] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0081] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0082] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0083] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0084] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0085] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0086] like Figures 1 to 7 As shown, this embodiment of the invention provides a performance testing device for a gas wellhead device, including: a frame 1, a clamping assembly, an inflation assembly, and a testing assembly. The clamping assembly and the inflation assembly are both installed on the frame 1, and the testing assembly is connected to the inflation assembly.

[0087] The beneficial effects of adopting the technical solution of this invention are: the clamping component plays a role in clamping and fixing the product, which is conducive to maintaining the stability of the product in subsequent testing. By designing a device structure that includes clamping components, air-filling components, etc., stable clamping of the wellhead device, air pressure detection, and testing process are achieved, thereby completing the airtightness test of the gas production wellhead device, ensuring that no leakage will occur during its subsequent use, and ensuring the quality and safety of the gas production wellhead device.

[0088] like Figures 1 to 7 As shown, the clamping assembly is further mounted on the frame 1 via a lifting assembly.

[0089] The beneficial effects of adopting the above-mentioned further technical solution are: it facilitates the adjustment of the height of the clamping component through the lifting component according to actual needs, and facilitates the clamping component to clamp wellhead devices of different sizes, thereby improving applicability.

[0090] like Figures 1 to 7As shown, the lifting assembly further includes: a pair of support seats 11, a support plate 12 and a pair of stabilizing rods. The pair of stabilizing rods are installed at the bottom of the frame 1. The support plate 12 is slidably installed on the pair of stabilizing rods. The pair of support seats 11 are both connected to the support plate 12. The clamping assembly is connected to the pair of support seats 11.

[0091] The beneficial effects of adopting the above-mentioned further technical solutions are: the structural design of the lifting component simplifies the structure, facilitates installation and maintenance, and the stabilizing rod facilitates the stable sliding of the support plate, thereby improving stability and reliability.

[0092] like Figures 1 to 7 As shown, the clamping assembly further includes: a pair of first telescopic components and a pair of clamping plates 22, the pair of first telescopic components being respectively mounted on a pair of support seats 11, and the pair of clamping plates 22 being respectively connected to the pair of first telescopic components.

[0093] The beneficial effect of adopting the above-mentioned further technical solution is that by driving the mounting plate and clamping plate on the same side to move synchronously through the first telescopic component, the product can be clamped and fixed, which is conducive to maintaining the stability of subsequent product testing.

[0094] like Figures 1 to 7 As shown, further, a pair of the first telescopic components are respectively connected to a pair of clamping plates 22 via a pair of mounting plates 9. Each pair of clamping plates 22 is equipped with a buffer pad, and the clamping plates 22 have an arc-shaped structure.

[0095] The beneficial effects of adopting the above-mentioned further technical solution are: the buffer pad provides cushioning, preventing the clamp from damaging the wellhead device and improving reliability. The clamp has an arc-shaped structure, which facilitates the fitting of the clamp to the wellhead device and makes it easier to clamp the wellhead device.

[0096] like Figures 1 to 7 As shown, the first telescopic component is a first cylinder 10, and the buffer pad is a rubber pad.

[0097] The beneficial effects of adopting the above-mentioned further technical solution are: by driving the mounting plate and clamping plate on the same side to move synchronously through the first cylinder, the product can be clamped and fixed, which helps to maintain the stability of the product during subsequent testing. The setting of the cylinder and rubber pad simplifies the structure, reduces costs, and facilitates installation and maintenance.

[0098] like Figures 1 to 7 As shown, the frame 1 is further located between a pair of support seats 11, and a second telescopic component is installed at the bottom of the frame 1, the second telescopic component being connected to the support plate 12.

[0099] The advantages of adopting the above-mentioned further technical solution are: a compact structure and reduced space occupancy. The inclusion of the second telescopic component facilitates automatic lifting and lowering of the support plate, improving automation.

[0100] like Figures 1 to 7 As shown, the second telescopic component is further defined as a second cylinder 13, and the second telescopic component is located between the pair of stabilizer rods.

[0101] The beneficial effects of adopting the above-mentioned further technical solution are: the cylinder configuration improves efficiency and reduces costs. The second telescopic component is located between a pair of stabilizing rods, which facilitates the stable sliding of the support plate along the stabilizing rods, prevents the support plate from jamming with the stabilizing rods, and improves stability and reliability.

[0102] like Figures 1 to 7 As shown, the inflation assembly further includes a plug 7 and an air inlet pipe 20, both of which are slidably mounted on the frame 1, and the air inlet pipe 20 is connected to an air guide assembly.

[0103] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the plug is used to seal one end of the wellhead device, and the air inlet pipe is used to pressurize the wellhead device with air, which facilitates air tightness testing. The end of the air inlet pipe away from the plug is connected to an air guiding component for pressing air into the wellhead device.

[0104] like Figures 1 to 7 As shown, a support frame 3 is further installed on the frame 1, an installation frame 4 is installed on the support frame 3, a pair of installation blocks 6 are slidably installed on the installation frame 4, and the plug 7 and the air intake pipe 20 are respectively installed on the pair of installation blocks 6.

[0105] The beneficial effects of adopting the above-mentioned further technical solution are: the setting of the support frame, the mounting frame and the mounting block facilitates the pipe blocking and the sliding installation of the air intake pipe on the frame, the structure is compact, the structure is simplified, and it is easy to install and maintain.

[0106] like Figures 1 to 7 As shown, further, baffles 21 are installed on both the plug 7 and the air inlet pipe 20, and sealing gaskets are installed on both the baffles 21.

[0107] The beneficial effects of adopting the above-mentioned further technical solution are: the baffles fitted on the side walls of the plug and the air inlet pipe can seal both ends of the product and clamp and fix the product, facilitating subsequent testing of the product's airtightness. The sealing gasket is used to improve the sealing performance.

[0108] like Figures 1 to 7 As shown, a double-threaded screw 28 is rotatably mounted in the mounting frame 4, and a pair of support blocks 26 are threadedly mounted on the double-threaded screw 28. The pair of mounting blocks 6 are respectively connected to the pair of support blocks 26.

[0109] The beneficial effect of adopting the above-mentioned further technical solution is that the double-threaded screw drives the two support blocks to move relative to each other, thereby causing the plug and the air inlet pipe to move relative to each other, so that the plug and the air inlet pipe enter the interior of the opposite end of the product.

[0110] like Figures 1 to 7 As shown, a protective box 5 is further installed at one end of the mounting frame 4, and a geared motor 25 is installed in the protective box 5. The geared motor 25 is connected to the double-threaded screw 28 for transmission.

[0111] The beneficial effect of adopting the above-mentioned further technical solution is that the double-tooth screw is driven to rotate by the geared motor, and the double-tooth screw drives the two support blocks to move relative to each other, thereby causing the plug and the air inlet pipe to move relative to each other, so that the plug and the air inlet pipe enter the interior of the opposite end of the product.

[0112] like Figures 1 to 7 As shown, further, a pair of mounting blocks 6 are connected to a pair of support blocks 26 via a pair of telescopic rods 8.

[0113] The beneficial effects of adopting the above-mentioned further technical solution are as follows: After the product is fixed, the mounting block on the same side is lowered by driving the telescopic rod, causing the plug and air inlet pipe to move to the opposite side of the product. The telescopic rod facilitates the adjustment of the height of the plug and air inlet pipe according to actual needs, improving applicability.

[0114] like Figures 1 to 7 As shown, the mounting frame 4 is further provided with a pair of sliding grooves, and a slider 27 is slidably installed in each of the pair of sliding grooves. The pair of sliders 27 are respectively connected to the pair of support blocks 26.

[0115] The beneficial effect of adopting the above-mentioned further technical solution is that the cooperation between the slider and the groove helps to maintain the stability of the support block movement and prevent the support block from shaking.

[0116] like Figures 1 to 7 As shown, further, a pair of sliders 27 are connected to a pair of support blocks 26 by bolts. A pair of positioning blocks 29 are installed on the sliders 27. A pair of positioning grooves that are adapted to the positioning blocks 29 are provided on the support blocks 26. The pair of positioning blocks 29 are installed in the pair of positioning grooves.

[0117] The beneficial effects of adopting the above-mentioned further technical solution are: the slider and the support block on the same side are fixed by bolts, which facilitates subsequent disassembly and assembly. When installing the slider, the worker places the slider in the groove and makes the positioning block installed on one side of the slider engage with the positioning groove opened on the opposite side of the support block, which can play the role of positioning the slider and facilitate subsequent fixing.

[0118] like Figures 1 to 7As shown, the air guiding assembly further includes: an installation pipe 14, a connecting pipe 15, a conduit 17, a telescopic hose 18, and an air compressor 19. A control valve 24 is installed on the air intake pipe 20. The installation pipe 14 is connected to the air intake pipe 20. The connecting pipe 15 is connected to the installation pipe 14. The conduit 17 is connected to the connecting pipe 15. The telescopic hose 18 is connected to the conduit 17. The air compressor 19 is connected to the telescopic hose 18.

[0119] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Air is compressed by an air compressor. The control valve installed on the side wall of the air inlet pipe is opened, and the compressed air enters the air inlet pipe through a conduit, telescopic hose, connecting pipe, and installation pipe. The compressed air then enters the product's interior through the air inlet pipe. A pressure gauge installed on the side wall of the air inlet pipe detects the internal air pressure. Once the required test value is reached, the control valve installed on the side wall of the air inlet pipe is closed, thus stopping the introduction of compressed air into the product. The telescopic hose is used to accommodate adjustments to the position of the air inlet pipe.

[0120] like Figures 1 to 7 As shown, the detection component is a barometer 23, which is installed on the air intake pipe 20.

[0121] The beneficial effect of adopting the above-mentioned further technical solution is that the pressure gauge value is detected in real time by the control mechanism of the existing technology. When the pressure gauge value remains unchanged, the airtightness of the product is good. When the pressure gauge value changes, it indicates that the airtightness of the product is poor, which can play the role of detecting the airtightness of the product.

[0122] like Figures 1 to 7 As shown, further, a support plate 16 is installed on the frame 1, and an installation port is provided on the support plate 16, in which the telescopic hose 18 is installed.

[0123] The beneficial effects of adopting the above-mentioned further technical solution are: the support plate is used to support the telescopic hose and prevent the telescopic hose from obstructing other components. The telescopic hose is used to adapt to the position adjustment of the air intake pipe.

[0124] like Figures 1 to 7 As shown, a filter 32 is further installed in the mounting pipe 14.

[0125] The beneficial effects of adopting the above-mentioned further technical solution are: the installation pipe is equipped with a filter, which can filter out moisture and dust in the compressed air, and help to prevent the product from being damaged by moisture.

[0126] like Figures 1 to 7 As shown, further, an arc-shaped plate 30 is hinged to the mounting tube 14, and the arc-shaped plate 30 is detachably connected to the mounting tube 14 through a positioning component.

[0127] The beneficial effect of adopting the above-mentioned further technical solution is that the arc plate is hinged to the installation tube, which makes it easy for the staff to place the filter into the installation tube through the notch. Then the staff flips the arc plate so that the arc plate fits against the side opposite to the notch.

[0128] like Figures 1 to 7 As shown, the positioning assembly further includes: a pair of inserts 31, a pair of movable slots 33, a pair of elastic members, a pair of positioning rods 35, and a pair of slots 36 adapted to the inserts 31. The pair of inserts 31 are mounted on the arc plate 30. The pair of movable slots 33 and the pair of slots 36 are both disposed on the mounting tube 14. The pair of movable slots 33 are respectively connected to the pair of slots 36. The pair of positioning rods 35 are respectively slidably mounted in the pair of movable slots 33. The pair of elastic members are respectively mounted in the pair of movable slots 33. The two ends of the elastic members abut against the positioning rods 35 and the movable slots 33, respectively. The inserts 31 are provided with positioning holes adapted to the positioning rods 35.

[0129] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the insert block installed on one side of the arc plate engages with the slot opened in the inner wall of the recess. When the insert block moves into the slot, the insert block pushes the positioning rod on the same side to slide into the movable groove, and the positioning rod pushes the spring on the same side to retract. When the insert block and the slot are engaged, the positioning rod returns to its original position under the elastic force of the spring on the same side, and makes the positioning rod engage with the positioning hole opened in the side wall of the insert block, thus playing the role of positioning the insert block, which facilitates the subsequent fixation of the arc plate and the mounting tube by fasteners of the existing technology.

[0130] like Figures 1 to 7 As shown, the elastic component is a spring 34; a limiting block is installed on the side wall of the positioning rod 35, and a limiting groove adapted to the limiting block is provided in the movable groove 33, and the limiting block is slidably installed in the limiting groove.

[0131] The beneficial effect of adopting the above-mentioned further technical solution is that when the positioning rod slides in the movable groove on the same side, the positioning rod slides in the limiting groove on the same side with the limiting block. Through the cooperation of the limiting block and the limiting groove, it is beneficial to maintain the stability of the movement of the positioning rod.

[0132] Furthermore, a pressure relief valve is installed on the plug 7.

[0133] The beneficial effect of adopting the above-mentioned further technical solution is that the gas inside the product can be discharged through the pressure relief valve installed on the side wall of the plug, thereby achieving the effect of pressure relief and facilitating subsequent disassembly.

[0134] like Figures 1 to 7 As shown, further, a plurality of columns are installed at the bottom of the frame 1, and a conveyor belt 2 is installed inside the frame 1.

[0135] The beneficial effects of adopting the above-mentioned further technical solution are: multiple columns are used to support the frame, increasing load-bearing capacity; and a conveyor belt is used to transport the product to the clamping component area, improving automation.

[0136] This invention provides a performance testing device for gas production wellhead equipment to address issues such as insufficient clamping stability, low testing efficiency, and poor accuracy in airtightness testing after the gas production wellhead equipment (wellhead device) has been manufactured. By designing a device structure including clamping components, driving components, and gas guiding components, it achieves stable clamping of the product (gas production wellhead equipment), accurate gas pressure testing, and an automated testing process. This efficiently and accurately completes the airtightness testing of the gas production wellhead equipment, ensuring no leakage occurs during subsequent use and guaranteeing the quality and safety of the gas production wellhead equipment.

[0137] like Figures 1 to 7 As shown in the figure, the performance testing device for a gas wellhead device provided in this embodiment of the invention includes a frame 1, a plurality of columns arranged in a rectangular array at the bottom end of the frame 1, a conveyor belt 2 inside the frame 1, a support frame 3 fixedly installed at the top end of the frame 1, an installation frame 4 fixedly installed on the inner wall of the top end of the support frame 3, a second cylinder 13 fixedly installed at the bottom end of the frame 1, a support plate 12 fixedly installed at the piston shaft end of the second cylinder 13, and a clamping assembly at the top end of the support plate 12.

[0138] The clamping assembly includes two support seats 11 fixedly installed on the top of the support plate 12. The two support seats 11 are located on both sides of the frame 1. A first cylinder 10 is fixedly installed on the top of each of the two support seats 11. A mounting plate 9 is fixedly installed on the piston shaft end of each of the two first cylinders 10. Two symmetrically distributed clamping plates 22 are fixedly installed on the opposite side of each of the two mounting plates 9. A rubber pad is fixedly installed on the side of each clamping plate 22 away from the mounting plate 9 on the same side. Two symmetrically distributed stabilizing rods are fixedly installed at the bottom of the frame 1. The bottom ends of the two stabilizing rods slide through the support plate 12.

[0139] When using this equipment (performance testing device for gas wellhead equipment), the operator places the product above the conveyor belt 2. The product moves to the bottom of the support frame 3 via the conveyor belt 2. Then, the second cylinder 13 drives the support plate 12 to move up and down synchronously with the support base 11, the first cylinder 10, the mounting plate 9, and the clamping plate 22, so that the clamping plate 22 moves to align with the product. Then, the first cylinder 10 drives the mounting plate 9 and the clamping plate 22 on the same side to move synchronously, which can clamp and fix the product, which is beneficial to maintaining the stability of the product in subsequent testing.

[0140] Below the mounting frame 4, there are two symmetrically distributed mounting blocks 6. A plug 7 and an air inlet pipe 20 are respectively embedded in the two mounting blocks 6. A baffle 21 is fixedly fitted on the opposite side wall of the plug 7 and the air inlet pipe 20. A sealing gasket is fixedly installed on the opposite side of the two baffles 21. A drive assembly is provided between the two mounting blocks 6 and the mounting frame 4.

[0141] The drive assembly includes a double-threaded screw 28 rotatably mounted in the mounting frame 4. Support blocks 26 are fitted on both side walls of the double-threaded screw 28. A protective box 5 is fixedly mounted on one side of the mounting frame 4. A geared motor 25 is fixedly mounted inside the protective box 5. One end of the double-threaded screw 28 passes through the mounting frame 4 and is fixedly connected to the end of the output shaft of the geared motor 25. Telescopic rods 8 are fixedly mounted on the bottom of the two support blocks 26. The ends of the two telescopic rods 8 are fixedly connected to the top of the mounting block 6 on the same side.

[0142] After the product is fixed, the telescopic rod 8 drives the mounting block 6 on the same side to descend, so that the plug 7 and the air inlet pipe 20 move to the opposite side of the product. Then, the geared motor 25 drives the double threaded screw 28 to rotate, and the double threaded screw 28 drives the two support blocks 26 to move relative to each other, so that the plug 7 and the air inlet pipe 20 move relative to each other, so that the plug 7 and the air inlet pipe 20 enter the opposite end of the product. The side walls of the plug 7 and the air inlet pipe 20 are fitted with baffles 21, which can seal both ends of the product and facilitate subsequent testing of the product's airtightness.

[0143] Two symmetrically distributed sliding grooves are provided on both sides of the mounting frame 4. A slider 27 is slidably installed in each groove. The slider 27 is fixed to the opposite side of the support block 26 on the same side by bolts. Two symmetrically distributed positioning blocks 29 are fixedly installed on the side of the slider 27 near the support block 26 on the same side. The side wall of the support block 26 has a positioning groove that matches the positioning block 29 on the same side. When the support block 26 slides in the mounting frame 4, the support block 26 carries the slider 27 and slides in the groove on the same side. The cooperation between the slider 27 and the groove helps to maintain the stability of the movement of the support block 26. The slider 27 and the support block 26 on the same side are fixed by bolts, which facilitates subsequent disassembly and assembly. When installing the slider 27, the operator places the slider 27 in the groove and makes the positioning block 29 installed on one side of the slider 27 engage with the positioning groove on the opposite side of the support block 26, which can play the role of positioning the slider 27 and facilitate subsequent fixation.

[0144] An air guide assembly is connected to the end of the air intake pipe 20 away from the blockage pipe 7.

[0145] The air guiding assembly includes an air compressor 19 located on one side of the frame 1. A conduit 17 is connected to one side of the air compressor 19. An installation pipe 14 is fixedly connected to the end of the air inlet pipe 20 away from the blocking pipe 7. A filter 32 is installed inside the installation pipe 14. A connecting pipe 15 is connected to the side of the installation pipe 14 away from the air inlet pipe 20. A telescopic hose 18 is connected between the opposite sides of the connecting pipe 15 and the conduit 17. A support plate 16 is fixedly installed at the top of the frame 1. An installation port is opened at the top of the support plate 16. The telescopic hose 18 is located in the installation port. A pressure gauge 23 is installed on the side wall of the air inlet pipe 20 near the blocking pipe 7. A control valve 24 is installed on the side wall of the air inlet pipe 20 near the installation pipe 14. A pressure relief valve is installed on the side wall of the blocking pipe 7.

[0146] After the product is sealed and clamped, open the control valve 24 installed on the side wall of the air inlet pipe 20. Compressed air enters the air inlet pipe 20 through the conduit 17, telescopic hose 18, connecting pipe 15, and installation pipe 14. The compressed air enters the product through the air inlet pipe 20. The pressure gauge 23 installed on the side wall of the air inlet pipe 20 detects the internal pressure of the product. When the internal pressure reaches the required test value, close the control valve 24 installed on the side wall of the air inlet pipe 20 to stop the introduction of compressed air into the product. Then, the value of the pressure gauge 23 is monitored in real time by the existing control mechanism. When the value of the pressure gauge 23 remains unchanged, the airtightness of the product is good. When the value of the pressure gauge 23 changes, it indicates that the airtightness of the product is poor. This serves to test the airtightness of the product. After the product test is completed, the gas inside the product can be discharged through the pressure relief valve installed on the side wall of the plug pipe 7 to achieve the effect of pressure relief and facilitate subsequent disassembly.

[0147] The mounting tube 14 has a notch on its side wall, and an arc plate 30 is hinged in the notch. A positioning assembly is provided between the arc plate 30 and the mounting tube 14. The positioning assembly includes two inserts 31 fixedly installed on one side of the arc plate 30. The inner wall of the bottom end of the notch has a slot 36 that matches the inserts 31. The inner wall of the opposite side of the two slots 36 has a movable groove 33. A positioning rod 35 is slidably installed in the two movable grooves 33. A spring 34 is fixedly connected between the inner wall of the opposite side of the two positioning rods 35 and the inner wall of the opposite side of the movable groove 33. The opposite side of the two inserts 31 has a positioning hole that matches the positioning rod 35 on the same side.

[0148] The mounting tube 14 is equipped with a filter 32, which filters moisture and dust from the compressed air, helping to prevent damage to the product's interior caused by moisture. A notch is provided on the side wall of the mounting tube 14, allowing workers to place the filter 32 inside. The workers then flip the arc-shaped plate 30 so that it aligns with the side opposite the notch, and the insert 31 mounted on one side of the arc-shaped plate 30 engages with the slot 36 on the inner wall of the notch. As the insert 31 moves into the slot 36, it pushes the positioning rod 35 on the same side to slide into the movable groove 33, and the positioning rod 35 pushes the spring 34 on the same side to retract. After the insert 31 and slot 36 are engaged, the positioning rod 35 returns to its original position under the elastic force of the spring 34 on the same side, engaging with the positioning hole on the side wall of the insert 31, thus positioning the insert 31 and facilitating subsequent fixation of the arc-shaped plate 30 and the mounting tube 14 using existing fasteners.

[0149] Two symmetrically distributed limiting blocks are fixedly installed on the side walls of the opposite ends of the two positioning rods 35, and the inner walls of the two movable grooves 33 are provided with limiting grooves that match the limiting blocks on the same side.

[0150] When the positioning rod 35 slides within the movable groove 33 on the same side, the positioning rod 35 slides within the limiting groove on the same side along with the limiting block. The cooperation between the limiting block and the limiting groove helps to maintain the stability of the movement of the positioning rod 35.

[0151] A method for testing the performance of a gas production wellhead device, using the aforementioned gas production wellhead device performance testing apparatus, includes the following steps: The product (gas wellhead device, wellhead device) is transported to the support frame 3 via conveyor belt 2. The product is clamped and fixed by clamping components. The drive components drive the two mounting blocks 6 to move relative to each other, so that the plug pipe 7 and the air inlet pipe 20 are placed inside the two ends of the product.

[0152] After the product is sealed and clamped, compressed air is supplied by the air compressor 19, and the control valve 24 installed on the side wall of the air inlet pipe 20 is opened. The compressed air enters the air inlet pipe 20 through the conduit 17, the telescopic hose 18, the connecting pipe 15, and the installation pipe 14. The compressed air enters the product through the air inlet pipe 20. The air pressure value inside the product is detected by the air pressure gauge 23 installed on the side wall of the air inlet pipe 20. When the internal pressure of the product reaches the required test value, the control valve 24 installed on the side wall of the air inlet pipe 20 is closed to stop the introduction of compressed air into the product.

[0153] When the value of pressure gauge 23 remains unchanged, the product's airtightness is good. When the value of pressure gauge 23 changes, it indicates that the product's airtightness is poor, which can be used to test the product's airtightness. After the product test is completed, the gas inside the product can be discharged through the pressure relief valve installed on the side wall of the plug 7 to achieve the effect of pressure relief.

[0154] The implementation principle of this embodiment is as follows: When the device is in use, the product is conveyed to the bottom of the support frame 3 by the conveyor belt 2, and then clamped and fixed by the clamping assembly. This facilitates the relative movement of the two mounting blocks 6 driven by the drive assembly, so that the blocking pipe 7 and the air inlet pipe 20 are placed inside the two ends of the product. Both the blocking pipe 7 and the air inlet pipe 20 have baffles 21 on their side walls, which not only clamp and fix the product, but also seal the product. After the product is sealed and clamped, the air compressor 19 compresses air and opens the control valve 24 installed on the side wall of the air inlet pipe 20. The compressed air enters the air inlet pipe 20 through the conduit 17, the telescopic hose 18, the connecting pipe 15, and the mounting pipe 14. 20 enters the product's interior, and the air pressure value inside the product is detected by the air pressure gauge 23 installed on the side wall of the air inlet pipe 20. When the internal pressure reaches the required test value, the control valve 24 installed on the side wall of the air inlet pipe 20 is closed to stop the introduction of compressed air into the product. Subsequently, the value of the air pressure gauge 23 is monitored in real time by the existing technology control mechanism. When the value of the air pressure gauge 23 remains unchanged, the air tightness of the product is good. When the value of the air pressure gauge 23 changes, it indicates that the air tightness of the product is poor, thus serving the purpose of testing the air tightness of the product. After the product test is completed, the gas inside the product can be discharged through the pressure relief valve installed on the side wall of the plug pipe 7 to achieve the effect of pressure relief and facilitate subsequent disassembly.

[0155] In addition, the present invention also provides a performance test method for a gas wellhead device. Based on the above-mentioned performance test device for a gas wellhead device, the performance test method for a gas wellhead device includes: S1, clamping the wellhead device with a clamping component; S2, inflating the wellhead device with an air-inflating component; S3, detecting the sealing performance of the wellhead device with a detection component.

[0156] The beneficial effects of adopting the technical solution of this invention are: the clamping component plays a role in clamping and fixing the product, which is conducive to maintaining the stability of the product in subsequent testing. By designing a device structure that includes clamping components, air-filling components, etc., stable clamping of the wellhead device, air pressure detection, and testing process are achieved, thereby completing the airtightness test of the gas production wellhead device, ensuring that no leakage will occur during its subsequent use, and ensuring the quality and safety of the gas production wellhead device.

[0157] Further, step S1 includes: S11, conveying the wellhead device to the bottom of the support frame via a conveyor belt; S12, clamping the wellhead device via a clamping assembly.

[0158] The beneficial effects of adopting the above-mentioned further technical solution are: the conveyor belt is used to transport the product to the clamping component area, improving automation. The clamping component serves to hold and fix the product, which helps maintain the stability of subsequent product testing.

[0159] Further, step S2 includes: S21, driving the double-toothed screw to rotate by a geared motor, so that the plug and the air inlet pipe are connected to both ends of the wellhead device; S22, filling the wellhead device with air through the air guide assembly.

[0160] The beneficial effects of adopting the above-mentioned further technical solution are: the double-threaded screw drives the two support blocks to move relative to each other, thereby causing the plug and the air inlet pipe to move relative to each other, so that the plug and the air inlet pipe enter the interior of the opposite end of the product, which facilitates the filling of gas into the wellhead device through the gas guiding assembly.

[0161] Further, step S22 includes: S221, compressing air using an air compressor; S222, opening a control valve to allow compressed air to enter the wellhead device through the air inlet pipe; S223, detecting whether the air pressure inside the wellhead device has reached a preset value using a detection component; S224, closing the control valve when the air pressure inside the wellhead device reaches the preset value.

[0162] The beneficial effects of adopting the above-mentioned further technical solution are as follows: Air is compressed by an air compressor. The control valve installed on the side wall of the air inlet pipe is opened, and the compressed air enters the air inlet pipe through a conduit, telescopic hose, connecting pipe, and installation pipe. The compressed air then enters the product's interior through the air inlet pipe. A pressure gauge installed on the side wall of the air inlet pipe detects the internal air pressure. Once the required test value is reached, the control valve installed on the side wall of the air inlet pipe is closed, thus stopping the introduction of compressed air into the product. The telescopic hose is used to accommodate adjustments to the position of the air inlet pipe.

[0163] Furthermore, step S3 includes: when the value of the pressure gauge remains unchanged, the airtightness of the wellhead device is good; when the value of the pressure gauge changes, the airtightness of the wellhead device is abnormal.

[0164] The beneficial effect of adopting the above-mentioned further technical solution is that the pressure gauge value is detected in real time by the control mechanism of the existing technology. When the pressure gauge value remains unchanged, the airtightness of the product is good. When the pressure gauge value changes, it indicates that the airtightness of the product is poor, which can play the role of detecting the airtightness of the product.

[0165] Furthermore, after step S3, step S4 is followed by: after the test is completed, pressure is released through the pressure relief valve.

[0166] The beneficial effect of adopting the above-mentioned further technical solution is that the gas inside the product can be discharged through the pressure relief valve installed on the side wall of the plug, thereby achieving the effect of pressure relief and facilitating subsequent disassembly.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A performance testing device for gas wellhead equipment, characterized in that, include: The frame (1), clamping component, inflation component and detection component are installed on the frame (1), and the detection component is connected to the inflation component.

2. The performance testing device for a gas wellhead device according to claim 1, characterized in that, The clamping assembly is mounted on the frame (1) via a lifting assembly.

3. The performance testing device for a gas wellhead apparatus according to claim 2, characterized in that, The lifting assembly includes: a pair of support seats (11), a support plate (12) and a pair of stabilizing rods. The pair of stabilizing rods are installed at the bottom of the frame (1). The support plate (12) is slidably installed on the pair of stabilizing rods. The pair of support seats (11) are both connected to the support plate (12). The clamping assembly is connected to the pair of support seats (11).

4. The performance testing device for a gas wellhead device according to claim 3, characterized in that, The clamping assembly includes a pair of first telescopic components and a pair of clamping plates (22). The pair of first telescopic components are respectively mounted on a pair of support seats (11), and the pair of clamping plates (22) are respectively connected to the pair of first telescopic components.

5. The performance testing device for a gas wellhead apparatus according to claim 4, characterized in that, A pair of the first telescopic components are connected to a pair of clamps (22) via a pair of mounting plates (9). Each pair of clamps (22) is equipped with a buffer pad and the clamps (22) are arc-shaped.

6. The performance testing device for a gas wellhead apparatus according to claim 5, characterized in that, The first telescopic component is a first cylinder (10), and the buffer pad is a rubber pad.

7. The performance testing device for a gas wellhead apparatus according to claim 3, characterized in that, The frame (1) is located between a pair of support seats (11), and a second telescopic component is installed at the bottom of the frame (1), which is connected to the support plate (12).

8. The performance testing device for a gas wellhead apparatus according to claim 7, characterized in that, The second telescopic component is a second cylinder (13), and the second telescopic component is located between a pair of the stabilizing rods.

9. The performance testing device for a gas wellhead apparatus according to claim 1, characterized in that, The inflation assembly includes a plug (7) and an air inlet pipe (20), both of which are slidably mounted on the frame (1), and the air inlet pipe (20) is connected to an air guide assembly.

10. The performance testing device for a gas wellhead device according to claim 9, characterized in that, A support frame (3) is installed on the frame (1), an installation frame (4) is installed on the support frame (3), and a pair of installation blocks (6) are slidably installed on the installation frame (4). The plug (7) and the air inlet pipe (20) are respectively installed on the pair of installation blocks (6).

11. The performance testing device for a gas wellhead apparatus according to claim 10, characterized in that, Both the plug (7) and the air inlet pipe (20) are equipped with baffles (21), and both baffles (21) are equipped with sealing gaskets.

12. The performance testing device for a gas wellhead device according to claim 10, characterized in that, A double-threaded screw (28) is rotatably mounted in the mounting frame (4). A pair of support blocks (26) are threadedly mounted on the double-threaded screw (28). The pair of mounting blocks (6) are respectively connected to the pair of support blocks (26).

13. The performance testing device for a gas wellhead apparatus according to claim 12, characterized in that, A protective box (5) is installed at one end of the mounting frame (4), and a geared motor (25) is installed in the protective box (5). The geared motor (25) is connected to the double-threaded screw (28) for transmission.

14. The performance testing device for a gas wellhead device according to claim 12, characterized in that, A pair of mounting blocks (6) are connected to a pair of support blocks (26) via a pair of telescopic rods (8).

15. The performance testing device for a gas wellhead apparatus according to claim 12, characterized in that, The mounting frame (4) is provided with a pair of sliding grooves, and a slider (27) is slidably installed in each of the pair of sliding grooves. The pair of sliders (27) are respectively connected to the pair of support blocks (26).

16. The performance testing device for a gas wellhead apparatus according to claim 15, characterized in that, A pair of sliders (27) are connected to a pair of support blocks (26) by bolts. A pair of positioning blocks (29) are installed on the sliders (27). A pair of positioning grooves adapted to the positioning blocks (29) are provided on the support blocks (26). A pair of positioning blocks (29) are installed in the pair of positioning grooves.

17. The performance testing device for a gas wellhead apparatus according to claim 9, characterized in that, The air guiding assembly includes: an installation pipe (14), a connecting pipe (15), a conduit (17), a telescopic hose (18), and an air compressor (19). A control valve (24) is installed on the air intake pipe (20). The installation pipe (14) is connected to the air intake pipe (20). The connecting pipe (15) is connected to the installation pipe (14). The conduit (17) is connected to the connecting pipe (15). The telescopic hose (18) is connected to the conduit (17). The air compressor (19) is connected to the telescopic hose (18).

18. The performance testing device for a gas wellhead apparatus according to claim 17, characterized in that, The detection component is a barometer (23), which is installed on the air intake pipe (20).

19. A performance testing device for a gas wellhead apparatus according to claim 17, characterized in that, A support plate (16) is installed on the frame (1), and an installation port is provided on the support plate (16). The telescopic hose (18) is installed in the installation port.

20. The performance testing device for a gas wellhead apparatus according to claim 17, characterized in that, A filter (32) is installed in the installation tube (14).

21. The performance testing device for a gas wellhead device according to claim 20, characterized in that, An arc plate (30) is hinged to the mounting tube (14), and the arc plate (30) and the mounting tube (14) are detachably connected by a positioning component.

22. The performance testing device for a gas wellhead device according to claim 21, characterized in that, The positioning assembly includes: a pair of inserts (31), a pair of movable slots (33), a pair of elastic components, a pair of positioning rods (35), and a pair of slots (36) adapted to the inserts (31). The pair of inserts (31) are mounted on the arc plate (30). The pair of movable slots (33) and the pair of slots (36) are both disposed on the mounting tube (14). The pair of movable slots (33) are respectively connected to the pair of slots (36). The pair of positioning rods (35) are respectively slidably mounted in the pair of movable slots (33). The pair of elastic components are respectively mounted in the pair of movable slots (33). The two ends of the elastic components abut against the positioning rods (35) and the movable slots (33) respectively. The inserts (31) are provided with positioning holes adapted to the positioning rods (35).

23. The performance testing device for a gas wellhead apparatus according to claim 22, characterized in that, The elastic component is a spring (34); a limiting block is installed on the side wall of the positioning rod (35), and a limiting groove adapted to the limiting block is provided in the movable groove (33), and the limiting block is slidably installed in the limiting groove.

24. The performance testing device for a gas wellhead apparatus according to claim 9, characterized in that, A pressure relief valve is installed on the plug (7).

25. The performance testing device for a gas wellhead apparatus according to claim 1, characterized in that, Multiple columns are installed at the bottom of the frame (1), and a conveyor belt (2) is installed inside the frame (1).

26. A performance testing method for a gas wellhead device, characterized in that, Based on the gas wellhead device performance testing device according to any one of claims 1 to 25, the gas wellhead device performance testing method includes: S1. Clamping the wellhead device using clamping components; S2. Inflate the wellhead device with air through the air-inflating assembly; S3. Inspect the sealing performance of the wellhead device using the detection components.

27. The performance test method for a gas wellhead device according to claim 26, characterized in that, Step S1 includes: S11, transporting the wellhead device to below the support frame via a conveyor belt; S12. The wellhead device is clamped by the clamping assembly.

28. The performance test method for a gas wellhead device according to claim 26, characterized in that, Step S2 includes: S21, driving the double-tooth screw to rotate by a reduction motor, so that the plug and the air inlet pipe are connected to both ends of the wellhead device; S22. Gas is introduced into the wellhead device through the gas guiding assembly.

29. The performance test method for a gas wellhead device according to claim 28, characterized in that, Step S22 includes: S221, compressing air using an air compressor; S222. Open the control valve to allow compressed air to enter the wellhead device through the air inlet pipe; S223. The gas pressure inside the wellhead device is checked by the detection component to see if it reaches the preset value; S224. When the gas pressure inside the wellhead device reaches the preset value, close the control valve.

30. The performance test method for a gas wellhead device according to claim 26, characterized in that, Step S3 includes: when the pressure gauge reading remains unchanged, the wellhead equipment is in good airtight condition; When the pressure gauge reading changes, the airtightness of the wellhead equipment is abnormal.

31. The performance test method for a gas wellhead device according to claim 26, characterized in that, Step S3 is followed by: S4, after the test is completed, the pressure is released through the pressure relief valve.

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