High-temperature and high-pressure gas-liquid dual-purpose valve with replaceable valve element sealing part

Abstract

The utility model provides a high-temperature high-pressure gas-liquid dual-purpose valve with a replaceable valve core sealing part, which belongs to the technical field of valves and comprises a valve body, threaded flanges are in threaded connection with two sides of the valve body, and pipeline welding flanges are fixedly mounted on the outer sides of the threaded flanges through bolts. According to the high-temperature and high-pressure gas-liquid dual-purpose valve, the valve element sealing part can be replaced through the valve, the defect that the valve element sealing part of an existing high-temperature and high-pressure gas-liquid dual-purpose valve cannot be replaced is overcome, and when the valve element sealing part is corroded and damaged in the long-term use process, the valve element sealing part can be replaced; therefore, the problem that the sealing performance of the valve becomes poor due to the fact that a valve element sealing part is damaged is avoided, the service life of the valve is prolonged, the reliability and stability of the valve are improved, high-temperature and high-pressure gas and liquid can be effectively prevented from leaking in the valve through the arrangement of the sealing ring and the sealing face, and the sealing performance of the valve is greatly improved. And the strict sealing requirement of high-temperature and high-pressure gas-liquid dual purposes is met.

Description

Technical Field

[0001] This utility model belongs to the technical field of valves, specifically relating to a high-temperature and high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium. Based on their function, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or overflow pressure relief. Valves used in fluid control systems range from the simplest shut-off valves to various valves used in extremely complex automatic control systems, with a wide variety of types and specifications. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. Based on their material, valves are also classified as cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, and non-standard customized valves, etc.

[0003] Existing high-temperature and high-pressure gas-liquid dual-purpose valves do not have replaceable valve core sealing parts, which makes the valve core sealing parts prone to corrosion and damage during long-term use, resulting in poor sealing performance of the high-temperature and high-pressure gas-liquid dual-purpose valves. Therefore, developing a high-temperature and high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts has important practical significance and market demand. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts, comprising:

[0007] The valve body has threaded flanges on both sides. Pipeline welding flanges are bolted to the outer sides of the threaded flanges. A valve core sleeve is mounted on the top of the valve body, a pressure cap is mounted on the top of the valve core sleeve, an indicator sleeve is mounted on the top of the pressure cap, an indicator block is installed inside the indicator sleeve, a hand-tightening rod is mounted on the top of the indicator sleeve, a torsion head is mounted on the surface of the hand-tightening rod, a threaded valve stem is mounted on the bottom of the torsion head, the bottom end of the threaded valve stem extends into the inner cavity of the pressure cap, a copper sleeve is mounted on the surface of the threaded valve stem, the valve core is mounted on the bottom end of the threaded valve stem, and a valve bottom plug is mounted on the bottom of the valve body. The components are connected by threads and bolts, enabling rapid replacement of the valve core sealing parts. This solves the problem of traditional valves being scrapped due to corrosion damage to the seals. The multi-layer structure enhances sealing performance and pressure resistance, making it suitable for harsh gas and liquid applications.

[0008] As a preferred embodiment of this utility model, the surfaces on both sides of the valve body are provided with a first thread, and the inner cavity of the threaded flange is provided with a second thread that cooperates with the first thread. The double thread cooperation ensures the tightness between the valve body and the threaded flange, preventing medium leakage under high pressure. The threaded flange can be rotated and adjusted to realize the change of the hole position.

[0009] As a preferred embodiment of this utility model, the threaded flange is provided with a sealing surface, which forms a redundant seal through the cooperation of the sealing surface and the thread, and is particularly suitable for corrosive media.

[0010] As a preferred embodiment of this utility model, the contact surface between the valve body and the valve bottom plug is provided with two sealing rings, and sealing rings are provided on both sides of the valve body. The double sealing ring design significantly improves the sealing reliability of the bottom and sides of the valve body, and avoids medium leakage under high pressure.

[0011] As a preferred embodiment of this utility model, a sealing ring is provided on the contact surface between the valve body and the valve core sleeve, and a sealing ring is provided on the contact surface between the valve core sleeve and the pressure cover. The sealing rings on the moving parts of the valve core reduce frictional loss and extend the valve core life. Each component is independently sealed, and local damage does not affect the overall performance.

[0012] As a preferred embodiment of this utility model, a sealing ring is provided on the contact surface between the compression cover and the threaded valve stem. The sealing ring prevents the medium from leaking along the axial direction of the threaded valve stem, thus ensuring long-term stability under high temperature and high pressure.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the valve core sealing parts can be replaced, overcoming the defect of existing high-temperature and high-pressure gas-liquid dual-purpose valves where the valve core sealing parts cannot be replaced. When the valve core sealing parts are corroded and damaged during long-term use, they can be replaced, thereby avoiding the problem of poor valve sealing performance due to damage to the valve core sealing parts, extending the service life of the valve, and improving the reliability and stability of the valve. Through the setting of sealing rings and sealing surfaces, leakage of high-temperature and high-pressure gas and liquid inside the valve can be effectively prevented, greatly improving the sealing performance of the valve and meeting the strict sealing requirements of high-temperature and high-pressure gas-liquid dual-purpose valves. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0015] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the structure of this utility model.

[0017] In the diagram: 1. Valve body; 2. Threaded flange; 3. Pipeline welding flange; 4. Valve core sleeve; 5. Compression cover; 6. Indicator sleeve; 7. Indicator block; 8. Hand-tightening rod; 9. Torque head; 10. Threaded valve stem; 11. Copper sleeve; 12. Valve core body; 13. Valve bottom plug. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0021] Example

[0022] Reference Figure 1-2 This embodiment of the present invention provides a high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts, comprising:

[0023] The valve body 1 has threaded flanges 2 on both sides. Pipeline welding flanges 3 are fixed to the outside of the threaded flanges 2 by bolts. A valve core sleeve 4 is installed on the top of the valve body 1. A pressure cover 5 is installed on the top of the valve core sleeve 4. An indicator sleeve 6 is installed on the top of the pressure cover 5. An indicator block 7 is installed in the inner cavity of the indicator sleeve 6. A hand-tightening rod 8 is set on the top of the indicator sleeve 6. A torsion head 9 is installed on the surface of the hand-tightening rod 8. A threaded valve stem 10 is installed at the bottom of the torsion head 9. The bottom end of the threaded valve stem 10 extends into the inner cavity of the pressure cover 5. A copper sleeve 11 is set on the surface of the threaded valve stem 10. A valve core body 12 is installed at the bottom end of the threaded valve stem 10. A valve bottom plug 13 is installed at the bottom of the valve body 1. The components are connected by threads and bolts, which realizes the quick replacement of valve core sealing parts and solves the problem of overall scrapping of traditional valves due to corrosion damage of sealing parts. The multi-layer structure enhances sealing performance and pressure bearing capacity and is suitable for harsh working conditions of gas and liquid.

[0024] The valve body 1 has a first thread on both sides of its surface, and the threaded flange 2 has a second thread that works in conjunction with the first thread. The double threaded connection ensures the tightness between the valve body 1 and the threaded flange 2, preventing medium leakage under high pressure. The threaded flange 2 can be rotated and adjusted to change the position of the orifice.

[0025] Specifically, the threaded flange 2 is provided with a sealing surface, which forms a redundant seal through the mating of the sealing surface and the thread, making it particularly suitable for corrosive media.

[0026] Furthermore, two sealing rings are provided on the contact surface between the valve body 1 and the valve bottom plug 13. Sealing rings are provided on both sides of the valve body 1. The double sealing ring design significantly improves the sealing reliability of the bottom and sides of the valve body 1, preventing medium leakage under high pressure.

[0027] Preferably, a sealing ring is provided on the contact surface between the valve body 1 and the valve core sleeve 4, and a sealing ring is provided on the contact surface between the valve core sleeve 4 and the pressure cover 5. The sealing rings on the moving parts of the valve core reduce friction loss and extend the valve core life. Each component is independently sealed, and local damage does not affect the overall performance.

[0028] It should be noted that a sealing ring is provided on the contact surface between the compression cap 5 and the threaded valve stem 10. The sealing ring prevents the medium from leaking along the axial direction of the threaded valve stem 10, ensuring long-term stability under high temperature and high pressure.

[0029] In summary, the ability to replace valve core sealing components overcomes the shortcomings of existing high-temperature, high-pressure gas-liquid dual-purpose valves where these components cannot be replaced. When valve core sealing components become corroded or damaged during long-term use, they can be replaced, thus preventing the valve's sealing performance from deteriorating due to damage to the valve core sealing components. This extends the valve's service life and improves its reliability and stability. Furthermore, the use of sealing rings and sealing surfaces effectively prevents leakage of high-temperature, high-pressure gas and liquid inside the valve, significantly improving its sealing performance and meeting the stringent sealing requirements of high-temperature, high-pressure gas-liquid dual-purpose valves.

[0030] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0031] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0032] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts, characterized in that: include: The valve body (1) has threaded flanges (2) on both sides. Pipe welding flanges (3) are fixed to the outside of the threaded flanges (2) by bolts. A valve core sleeve (4) is installed on the top of the valve body (1). A pressure cover (5) is installed on the top of the valve core sleeve (4). An indicator sleeve (6) is installed on the top of the pressure cover (5). An indicator block (7) is installed in the inner cavity of the indicator sleeve (6). A hand-tightening rod (8) is provided on the top of the indicator sleeve (6). A torsion head (9) is installed on the surface of the hand-tightening rod (8). A threaded valve stem (10) is installed at the bottom of the torsion head (9). The bottom end of the threaded valve stem (10) extends through the inner cavity of the pressure cover (5). A copper sleeve (11) is provided on the surface of the threaded valve stem (10). A valve core body (12) is installed at the bottom end of the threaded valve stem (10). A valve bottom plug (13) is installed at the bottom of the valve body (1).

2. The high-temperature and high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts according to claim 1, characterized in that: The valve body (1) has a first thread on both sides of its surface, and the threaded flange (2) has a second thread in its inner cavity that works in conjunction with the first thread.

3. A high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts according to claim 2, characterized in that: The threaded flange (2) is provided with a sealing surface.

4. A high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts according to claim 3, characterized in that: The contact surface between the valve body (1) and the valve bottom plug (13) is provided with two sealing rings, and sealing rings are provided on both sides of the valve body (1).

5. A high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts according to claim 4, characterized in that: A sealing ring is provided on the contact surface between the valve body (1) and the valve core sleeve (4), and a sealing ring is provided on the contact surface between the valve core sleeve (4) and the pressure cover (5).

6. A high-temperature, high-pressure gas-liquid dual-purpose valve with replaceable valve core sealing parts according to claim 5, characterized in that: A sealing ring is provided on the contact surface between the compression cap (5) and the threaded valve stem (10).

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