A needle valve device for facilitating gas production operations

Abstract

The utility model discloses a kind of needle valve devices facilitating gas production operation, including valve body, still including first regulating valve stem, dosing screw rod and second regulating valve stem;The first regulating valve stem, dosing screw rod and second regulating valve stem are installed in valve body outer side in turn, the opposite surface of first regulating valve stem and dosing screw rod is installed;Pressure hand wheel is installed on the first regulating valve stem, pressure relief hand wheel is installed on the second regulating valve stem, one end of dosing screw rod is provided with connecting thread, the other end is connected with high-pressure hose, the one end of high-pressure hose away from dosing screw rod is fixedly connected on valve body.The utility model can directly and the hose on chemical truck by setting dosing screw rod, to carry out dosing in gas production tree without needing to disassemble gas pressure detector;While improving dosing efficiency, thread sliding silk caused by gas pressure detector being frequently disassembled can also be avoided, natural gas leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gas extraction technology, specifically a needle valve device that facilitates gas extraction operations. Background Technology

[0002] During oilfield development, both domestic and international gas production trees require the installation of needle valves to facilitate the installation of pressure gauges and the connection between the pressure gauges and pipelines. These needle valves also serve as switches for pressure gauge input.

[0003] For example, the GMJ14F high-sealing sampling needle valve, currently in use, ensures the correct installation and use of pressure gauges in the pipeline through externally machined sampling and discharge devices, achieving the purpose of venting and sampling. It has a multi-functional design. The valve's sealing structure features a hard and soft dual-material seal design, avoiding direct erosion by the medium on the sealing surface. High-sealing sampling valves are widely used in the automatic control systems of oil fields, chemical plants, light industry, power plants, and metallurgical plants. Needle valves are adjustable valves with a wide range of applications; for example, the cutting distance used in flame cutting, where the flame temperature adjustment knob is a needle valve. Instrument needle valves are an important component of instrument measurement pipeline systems, mainly gate valves and ball valves. Their function is to open or close the pipeline. The valve core of a needle valve is a very sharp cone that is tightly integrated with the valve seat, achieving the closing function.

[0004] The aforementioned technology describes the GMJ14F high-sealing sampling needle valve installed on the gas production tree. This sampling valve features a conical valve core designed for tight integration with the valve seat, achieving a shut-off function. It is compact, aesthetically pleasing, flexible in use, securely connected, and offers excellent sealing performance. Furthermore, it is easy to install and disassemble, has a secure connection, and offers advantages such as fire resistance, explosion protection, high pressure resistance, and excellent sealing. However, in gas field wellheads, besides connecting pressure gauges to measure oil casing pressure, the needle valve also connects to high-pressure hoses, allowing chemical injection trucks to inject chemicals into the well. Existing sampling valves lack a structure to assist with wellhead chemical injection, requiring the pressure gauge to be disassembled and reinstalled before and after injection. Frequent disassembly and reinstallation not only wastes considerable time but can also strip threads at the installation points, severely impacting the pressure gauge's lifespan. Furthermore, the disassembly of the pressure gauge may pose a risk of natural gas leakage. Further improvements are needed. Utility Model Content

[0005] The purpose of this utility model is to provide a needle valve device that facilitates gas production operations. It aims to improve the existing sampling valve, which requires the disassembly and installation of the pressure gauge on the sampling valve before and after the injection process in the gas production well. This not only wastes a lot of time, but also causes the threads to strip and reduces the service life of the pressure gauge. Furthermore, there is a risk of natural gas leakage during the disassembly of the pressure gauge.

[0006] This utility model is implemented as follows: A needle valve device for easy gas sampling operations includes a valve body, characterized in that it further includes a first adjusting valve stem, a dosing screw, and a second adjusting valve stem; the first adjusting valve stem, the dosing screw, and the second adjusting valve stem are respectively installed on different sides of the valve body, with the first adjusting valve stem and the dosing screw installed on opposite sides; a pressure-tapping handwheel is installed on the first adjusting valve stem, and a pressure-relieving handwheel is installed on the second adjusting valve stem; one end of the dosing screw is provided with a connecting thread, and the other end is connected to a high-pressure hose, and is fixedly connected to the valve body through the high-pressure hose.

[0007] Preferably, the valve body also includes a pressure detector, and the valve body has an exhaust port at its upper end, with the pressure detector installed in the exhaust port.

[0008] Preferably, the valve body further includes an air inlet, and an air inlet is provided at the lower end of the valve body.

[0009] Preferably, it also includes a nameplate, which is mounted on the side of the valve body and is positioned opposite to the second regulating valve stem.

[0010] Preferably, the first regulating valve stem includes a valve stem nut, a first adjusting nut, and a connecting rod. The valve stem nut is installed on the first regulating valve stem, and the first adjusting nut is installed at the end of the first regulating valve stem away from the valve body. The pressure-taking handwheel is fixedly connected to the first adjusting nut via the connecting rod.

[0011] Preferably, the second regulating valve stem includes a second regulating nut, and the second regulating valve stem is mounted on the end away from the valve body, and the pressure relief handwheel is fixedly mounted on the second regulating nut.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting a dosing screw, this utility model allows for direct dosing of chemicals into the gas production tree via the hose on the chemical drainage vehicle without disassembling the pressure detector; this improves dosing efficiency and avoids thread stripping caused by frequent disassembly of the pressure detector, thus preventing natural gas leakage.

[0014] 2. By setting up a high-pressure hose, this utility model facilitates connection when connecting the hose in the dosing screw and the chemical discharge vehicle. At the same time, after the injection is completed and the pressure is released, the high-pressure hose can be disassembled for easy site cleanup. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front of this utility model;

[0016] Figure 2 This is a structural schematic diagram of the back of this utility model.

[0017] In the diagram: 1. Valve body; 2. High-pressure hose; 3. Dosing screw; 4. First adjusting valve stem; 5. Valve stem nut; 6. First adjusting nut; 7. Connecting rod; 8. Pressure tapping handwheel; 9. Exhaust port; 10. Air inlet; 11. Nameplate; 12. Air pressure detector; 13. Pressure relief handwheel; 14. Second adjusting nut; 15. Second adjusting valve stem. Detailed implementation method:

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0020] Example 1

[0021] like Figure 1As shown, a needle valve device for facilitating gas sampling operations includes a valve body 1, a first regulating valve stem 4, a dosing screw 3, and a second regulating valve stem 15. The first regulating valve stem 4, the dosing screw 3, and the second regulating valve stem 15 are sequentially installed on the outer side of the valve body 1, with the first regulating valve stem 4 and the dosing screw 3 installed opposite each other. Additionally, a pressure detector 12 is included. An exhaust port 9 is provided at the upper end of the valve body 1, and the pressure detector 12 is installed in the exhaust port 9. By connecting the pressure detector 12 to the upper left side of the valve body 1, the gas pressure controlled by the valve body 1 can be easily monitored. Operators can monitor and adjust the gas pressure in real time using the pressure detector 12. The installation of the pressure detector 12 does not affect the normal opening and closing of the exhaust port 9, thus allowing gas to be effectively discharged through the exhaust port 9. When the valve is closed or the operation is completed, the residual gas in the valve body 1 can be discharged by opening the exhaust port 9, preventing gas accumulation in the valve body 1 and thus avoiding pressure or leakage problems. The valve body 1 also includes an air inlet 10, which is provided at the lower end of the valve body 1; it also includes a nameplate 11, which is installed on the side of the valve body 1. The nameplate 11 is positioned opposite the second regulating valve stem 15. The nameplate 11 can provide important information about the valve body 1. The nameplate 11 usually includes information such as manufacturer, model, specifications, and rated parameters.

[0022] like Figure 1 and Figure 2As shown, a pressure-tapping handwheel 8 is installed on the first regulating valve stem 4. The first regulating valve stem 4 includes a valve stem nut 5, a first adjusting nut 6, and a connecting rod 7. The valve stem nut 5 is installed on the first regulating valve stem 4, and the first adjusting nut 6 is installed at the end of the first regulating valve stem 4 away from the valve body 1. The pressure-tapping handwheel 8 is fixedly connected to the first adjusting nut 6 through the connecting rod 7. Rotating the pressure-tapping handwheel 8 facilitates the rotation of the connecting rod 7, which in turn rotates the first regulating valve stem 4. The adjusting valve stem nut 5 serves to fix the position of the first regulating valve stem 4, preventing unnecessary displacement or loosening of the valve stem during operation and ensuring a stable connection between the first regulating valve stem 4 and the valve body 1. The opening and closing degree of the needle valve inside the valve body 1 can be controlled by the first regulating valve stem 4, thereby regulating the gas flow or pressure. This regulating function is very important for gas sampling operations because operators can precisely control the gas flow and pressure as needed to meet specific operational requirements. A pressure relief handwheel 13 is installed on the second regulating valve stem 15. The second regulating valve stem 15 includes a second adjusting nut 14, with the second adjusting nut 14 installed at the end of the second regulating valve stem 15 away from the valve body 1. The pressure relief handwheel 13 is fixedly installed on the second adjusting nut 14. This allows adjustment of the valve opening, thereby more precisely regulating the flow rate or pressure of the fluid, which is crucial for ensuring that the fluid parameters in the system are within the required range. One end of the dosing screw 3 is provided with a connecting thread, and the other end is connected to a high-pressure hose 2. The end of the high-pressure hose 2 away from the dosing screw 3 is fixedly connected to the valve body 1. The dosing screw 3 provides a detachable connection, facilitating direct connection of the dosing equipment to the dosing screw 3, while also facilitating the disassembly and replacement of the hose or other connections. Furthermore, by providing the dosing screw 3, the tight connection of the joint helps reduce the risk of leakage and accidents.

[0023] Example 2

[0024] like Figure 1 As shown, a needle valve device for facilitating gas sampling operations includes a valve body 1, a first regulating valve stem 4, a dosing screw 3, and a second regulating valve stem 15. The first regulating valve stem 4, the dosing screw 3, and the second regulating valve stem 15 are sequentially installed on the outer side of the valve body 1, with the first regulating valve stem 4 and the dosing screw 3 installed opposite each other. It also includes a pressure detector 12, with an exhaust port 9 at the upper end of the valve body 1, and the pressure detector 12 is installed in the exhaust port 9. The valve body 1 also includes an air inlet 10, with an air inlet 10 at the lower end of the valve body 1. Additionally, it includes a nameplate 11, which is installed on the side of the valve body 1, with the nameplate 11 positioned opposite the second regulating valve stem 15.

[0025] like Figure 1 and Figure 2As shown, a pressure-tapping handwheel 8 is installed on the first regulating valve stem 4. The first regulating valve stem 4 includes a valve stem nut 5, a first adjusting nut 6, and a connecting rod 7. The valve stem nut 5 is installed on the first regulating valve stem 4, and the first adjusting nut 6 is installed on the end of the first regulating valve stem 4 away from the valve body 1. The pressure-tapping handwheel 8 is fixedly connected to the first adjusting nut 6 through the connecting rod 7. A pressure-relief handwheel 13 is installed on the second regulating valve stem 15. The second regulating valve stem 15 includes a second adjusting nut 14. The second adjusting nut 14 is installed on the end of the second regulating valve stem 15 away from the valve body 1, and the pressure-relief handwheel 13 is fixedly installed on the second adjusting nut 14. One end of the dosing screw 3 is provided with a connecting thread, and the other end is connected to a high-pressure hose 2. The end of the high-pressure hose 2 away from the dosing screw 3 is fixedly connected to the valve body 1.

[0026] The working principle of this utility model is as follows: After the needle valve device is installed on the pipeline, the pressure tapping handwheel 8 is in the open state and the pressure relief handwheel 13 is in the closed state, supplying pressure to the pressure gauge. After the chemical drainage vehicle or other mobile dosing equipment arrives, the reserved connector of the needle valve is connected to the dosing screw 3 of the high-pressure hose 2, and the dosing pump of the chemical drainage vehicle is started to pressurize the pipeline. After the pressure is balanced, the pressure relief handwheel 13 of the needle valve is opened, and the agent is added to the pipeline. After the agent is added, the pressure relief handwheel 13 of the needle valve is closed, and the high-pressure hose 2 is depressurized on the chemical drainage vehicle. After the pressure of the high-pressure hose 2 is completely depressurized, the high-pressure hose 2 is removed, the site is cleaned up, and the construction is completed.

[0027] In summary, this utility model, by setting up the dosing screw 3, allows for direct dosing of chemicals into the gas production tree without disassembling the pressure detector 12 and the hose on the chemical drainage vehicle. This improves dosing efficiency and avoids thread stripping caused by frequent disassembly of the pressure detector 12, preventing natural gas leaks. Furthermore, the high-pressure hose 2 facilitates connection between the dosing screw 3 and the hose on the chemical drainage vehicle, and can be disassembled after dosing and depressurization for easy site cleanup.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A needle valve device for facilitating gas extraction operations, comprising a valve body (1), characterized in that: It also includes a first regulating valve stem (4), a dosing screw (3), and a second regulating valve stem (15); the first regulating valve stem (4), the dosing screw (3), and the second regulating valve stem (15) are respectively installed on different sides of the valve body (1), and the first regulating valve stem (4) and the dosing screw (3) are installed on opposite sides; a pressure-tapping handwheel (8) is installed on the first regulating valve stem (4), and a pressure-relieving handwheel (13) is installed on the second regulating valve stem (15); one end of the dosing screw (3) is provided with a connecting thread, and the other end is connected to a high-pressure hose (2), and is fixedly connected to the valve body (1) through the high-pressure hose (2).

2. The needle valve device for facilitating gas extraction operations according to claim 1, characterized in that, It also includes a pressure detector (12), and the upper end of the valve body (1) is provided with an exhaust port (9), and the pressure detector (12) is installed in the exhaust port (9).

3. The needle valve device for facilitating gas extraction operations according to claim 1, characterized in that, The valve body (1) also includes an air inlet (10), and the lower end of the valve body (1) is provided with an air inlet (10).

4. The needle valve device for facilitating gas extraction operations according to claim 1, characterized in that, It also includes a nameplate (11), which is installed on the side of the valve body (1) and is positioned opposite to the second regulating valve stem (15).

5. A needle valve device for facilitating gas extraction operations according to claim 1, characterized in that, The first regulating valve stem (4) includes a valve stem nut (5), a first regulating nut (6) and a connecting rod (7). The valve stem nut (5) is installed on the first regulating valve stem (4). The first regulating nut (6) is installed at the end of the first regulating valve stem (4) away from the valve body (1). The pressure-taking handwheel (8) is fixedly connected to the first regulating nut (6) through the connecting rod (7).

6. The needle valve device for facilitating gas extraction operations according to claim 1, characterized in that, The second regulating valve stem (15) includes a second regulating nut (14). The second regulating valve stem (15) is equipped with a second regulating nut (14) at one end away from the valve body (1). The pressure relief handwheel (13) is fixedly installed on the second regulating nut (14).

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