Large temperature change high pressure ball valve

Abstract

The utility model belongs to the technical field of ball valve, especially a big temperature change high pressure ball valve, including valve body, valve rod and half ball valve core, still include sealing assembly, sealing assembly includes: valve seat, can be axially movably set up in the valve body, elastic piece, set up between valve seat and valve body, sealing ring, set up on valve seat, be used for contacting half ball valve core, adjusting piece, can be radially movably set up on valve body for pushing valve seat moves, the utility model's beneficial effect is along with the frequent operation of half ball valve core and opens and closes, when sealing ring produces abrasion and leads to cannot with half ball valve core and tightly realizes the sealing, through operating multiple adjusting pieces and moving along the radial direction to the inside, come the whole valve seat moves along the axial direction and draws near half ball valve core, make sealing ring on valve seat can re -tightly half ball valve core, thereby re -realize sealing effect, effectively prolong the service life of ball valve.

Description

Technical Field

[0001] This utility model belongs to the field of ball valve technology, and in particular relates to a high-pressure ball valve with large temperature variation. Background Technology

[0002] High-pressure ball valves are high-pressure pipeline shut-off valves that rely on the rotation of a ball around the valve stem axis by 90° to achieve on / off switching. They are widely used in high-pressure systems such as oil and gas, chemical, power, and hydrogenation industries. High-pressure ball valves with a hemispherical valve core offer advantages such as anti-scaling and resistance to particle erosion, making them suitable for high-pressure, solid / slurry-containing, and frequent operation conditions. In existing technologies, most high-pressure ball valves with hemispherical valve cores, while exhibiting good sealing performance when closed, are prone to wear and failure of the valve seat due to frequent operation and particle erosion within the fluid. This leads to sealing failure when the valve is closed, affecting its normal operation. Utility Model Content

[0003] The purpose of this utility model is to provide a high-pressure ball valve with large temperature variation in order to solve the above-mentioned technical problems.

[0004] In view of this, the present invention provides a large temperature-varying high-pressure ball valve, including a valve body, a valve stem, and a hemispherical valve core, and also includes a sealing assembly, which includes: Valve seat, which is axially movable and disposed within the valve body; An elastic element is disposed between the valve seat and the valve body; A sealing ring is provided on the valve seat to contact the hemispherical valve core; An adjusting element, which is radially movable on the valve body, is used to move the valve seat.

[0005] Furthermore, the valve seat includes: A sealing part is provided on the end of the valve seat along the axial direction near the hemispherical valve core; The abutting part is located on the end of the valve seat axially away from the hemispherical valve core; The sealing part is provided with a sealing end face for adapting to and abutting the surface of the hemispherical valve core, and the abutting part is used to abut against the end of the adjusting part.

[0006] Furthermore, the adjusting element includes: A threaded rod, which is threaded onto the valve body and arranged radially; An abutment, which is connected to the end of the threaded rod and is tapered in shape; The abutting part is provided with an abutting slope that is compatible with the abutting joint structure.

[0007] Furthermore, it also includes a knob, which is connected to the other end of the threaded rod.

[0008] Furthermore, the knob is equipped with anti-slip texture.

[0009] The beneficial effects of this utility model are: with the frequent opening and closing of the hemispherical valve core, when the sealing ring wears and can no longer abut against the hemispherical valve core to achieve a seal, by operating multiple adjusting components to move radially inward, the valve seat as a whole is pushed axially closer to the hemispherical valve core, so that the sealing ring on the valve seat can abut against the hemispherical valve core again, thereby restoring the sealing effect and effectively extending the service life of the ball valve. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the valve seat structure in this utility model; Figure 4 This is a schematic diagram of the valve seat structure from another perspective in this utility model. The markings in the diagram are as follows: 1. First valve body; 2. Second valve body; 3. Fixed seat; 4. Fixed sleeve; 5. Valve seat; 51. Sealing part; 52. Abutting part; 53. Sealing end face; 54. Abutting bevel; 6. Elastic element; 7. Sealing ring; 8. Adjusting element; 81. Threaded rod; 82. Abutting joint; 83. Knob. Detailed Implementation

[0011] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0012] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0013] Example 1:

[0014] This embodiment provides a large temperature-variable high-pressure ball valve, including a valve body, a valve stem, and a hemispherical valve core, and also includes a sealing assembly, which includes: Valve seat 5 is axially movable and disposed within the valve body; Elastic element 6 is disposed between valve seat 5 and valve body; Sealing ring 7 is disposed on valve seat 5 and is used to contact the hemispherical valve core; Adjusting element 8 is radially movable on the valve body and is used to move valve seat 5.

[0015] In this technical solution, the valve body comprises a first valve body 1, a second valve body 2, a fixed seat 3, and a fixed sleeve 4. The two ends of the first valve body 1 are an inlet and an outlet, respectively. The fixed seat 3 and the second valve body 2 can be connected by fasteners. The fixed seat 3 and the second valve body 2 can then be connected as a whole to the outlet of the first valve body 1 by fasteners. A groove for mounting a valve seat 5 is formed between the fixed seat 3 and the second valve body 2. The valve seat 5 is disposed between the fixed seat 3 and the second valve body 2, and an elastic element 6 is provided between the valve seat 5 and the fixed seat 3. The elastic element 6 is used to press the valve seat 5 against the second valve body 2 for axial limiting. Then, the fixed sleeve 4 is connected to the second valve body 2 by fasteners to radially limit the valve seat 5.

[0016] The elastic element 6 can be an elastic bellows made of metal, which can extend and retract along the axial direction. The valve seat 5 has a first annular groove and the valve body has a second annular groove. The two ends of the elastic bellows are located in the first annular groove and the second annular groove, respectively. By setting the first annular groove and the second annular groove, the elastic bellows can be limited, thereby improving the extension and retraction stability of the elastic bellows.

[0017] The elastic element 6 can also be composed of several springs. Several first positioning grooves that adapt to the ends of the springs are provided on the valve seat 5, and several second positioning grooves that adapt to the ends of the springs are provided on the valve body. By providing the first and second positioning grooves, the springs can be limited, preventing spring displacement and thus avoiding movement and jamming of the valve seat 5. Furthermore, positioning pins can be provided in both the first and second positioning grooves. By fitting the two ends of the spring onto the positioning pins, the stability of the spring installation is further enhanced.

[0018] Several radially arranged mounting through holes are provided on the second valve body 2. An adjusting member 8 that can move radially is provided at each mounting through hole, and the end of the adjusting member 8 abuts against the valve seat 5. As the adjusting member 8 moves radially, it can push the valve seat 5 to move axially, ensuring that the sealing ring 7 on the valve seat 5 can abut against the hemispherical valve core to achieve sealing.

[0019] Through the above structural design, as the hemispherical valve core is frequently opened and closed, when the sealing ring 7 wears and can no longer abut against the hemispherical valve core to achieve a seal, multiple adjusting parts 8 are moved radially inward to push the valve seat 5 as a whole to move axially closer to the hemispherical valve core, so that the sealing ring 7 on the valve seat 5 can abut against the hemispherical valve core again, thereby restoring the sealing effect and effectively extending the service life of the ball valve.

[0020] Example 2:

[0021] This embodiment provides a high-temperature-variable-pressure ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0022] Furthermore, the valve seat 5 includes: Sealing part 51 is provided on the end of valve seat 5 along the axial direction close to the hemispherical valve core; The abutting part 52 is disposed on the end of the valve seat 5 away from the hemispherical valve core along the axial direction; The sealing part 51 is provided with a sealing end face 53 for adapting to and abutting the surface of the hemispherical valve core, and the abutting part 52 is used to abut against the end of the adjusting member 8.

[0023] Through the above structural design, when the sealing ring 7 on the valve seat 5 is worn out, the sealing end face 53 on the sealing part 51 of the valve seat 5 and the surface of the hemispherical valve core can be kept in close contact to achieve a hard seal, thereby ensuring that the sealing performance of the ball valve will not fail and further extending the service life of the sealing assembly.

[0024] Example 3:

[0025] This embodiment provides a high-temperature-variable-pressure ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0026] Furthermore, the adjusting element 8 includes: Threaded rod 81 is threaded onto the valve body and is arranged radially. Abutment 82 is connected to the end of threaded rod 81 and is tapered in shape; The abutting part 52 is provided with an abutting slope 54 that is adapted to the structure of the abutting part 82.

[0027] In this technical solution, the mounting through hole on the second valve body 2 can be a threaded hole. The adjusting member 8 consists of a screw and an abutment 82. The threaded rod 81 and the threaded hole are threadedly connected. The operator can drive it to move radially within the mounting through hole by rotating the threaded rod 81, thereby causing the abutment 82 to move further. The abutment 82 is conical and moves along the abutment slope 54 of the abutment portion 52, pressing the abutment portion 52 to move axially, thereby driving the sealing portion 51 of the valve seat 5 to move axially closer to the hemispherical valve core.

[0028] Furthermore, it also includes a knob 83, which is connected to the other end of the threaded rod 81. This structural design allows operators to more easily and conveniently control the rotation of the threaded rod 81 using the knob 83, thereby enabling the abutment 82 to push the abutment part 52 to move axially. Furthermore, the knob 83 is provided with anti-slip textures. These textures make operation more effortless and comfortable, improving operational comfort.

[0029] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A high-pressure ball valve with large temperature variation, comprising a valve body, a valve stem, and a hemispherical valve core, characterized in that, It also includes a sealing assembly, the sealing assembly comprising: Valve seat (5), which is axially movable and disposed in the valve body; An elastic element (6) is disposed between the valve seat (5) and the valve body; A sealing ring (7) is disposed on the valve seat (5) and is used to contact the hemispherical valve core; Adjusting element (8), which is radially movable on the valve body, is used to push the valve seat (5) to move.

2. The high-pressure ball valve with large temperature variation according to claim 1, characterized in that, The valve seat (5) includes: A sealing part (51) is provided on the end of the valve seat (5) axially close to the hemispherical valve core; Abutting part (52) is provided on the end of the valve seat (5) away from the hemispherical valve core along the axial direction; The sealing part (51) is provided with a sealing end face (53) for adapting to and abutting the surface of the hemispherical valve core, and the abutting part (52) is used to abut against the end of the adjusting member (8).

3. The high-pressure ball valve with large temperature variation according to claim 2, characterized in that, The adjusting member (8) includes: A threaded rod (81) is threaded onto the valve body and is arranged radially; Abutment (82), which is connected to the end of the threaded rod (81) and is cone-shaped; The abutting part (52) is provided with an abutting slope (54) that is adapted to the structure of the abutting part (82).

4. A high-pressure ball valve with large temperature variation according to claim 3, characterized in that, It also includes a knob (83) which is connected to the other end of the threaded rod (81).

5. A high-pressure ball valve with large temperature variation according to claim 4, characterized in that, The knob (83) is provided with anti-slip texture.

Images