High temperature and high pressure self-sealing gate valve forging structure for petroleum refining

Abstract

This utility model discloses a forged structure for a high-temperature, high-pressure self-sealing gate valve for petroleum refining. It relates to the field of gate valve forging technology and aims to solve the problems of existing gate valves having a simple gate structure, insufficient active sealing operation, and inadequate sealing performance in high-temperature, high-pressure environments. The key technical points include a sealing seat, with a gate plate disposed on the inner side of the sealing seat. Multiple side-sealing protrusions are integrally connected to the side surface of the gate plate. Multiple first sealing grooves are provided on the inner surface of the sealing seat, and the side-sealing protrusions fit into these grooves. The cross-section of each side-sealing protrusion is semi-circular. A surface-sealing protrusion, in the shape of a ring, is integrally connected to the symmetrical outer surface of the gate plate. This achieves improved gate plate fit within the valve body and enables active sealing operation under high-temperature, high-pressure conditions, resulting in a strong sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of gate valve forging technology, and in particular to the structure of high temperature and high pressure self-sealing gate valve forgings for petroleum refining. Background Technology

[0002] In the oil refining process, a large number of pipelines are used for transportation operations. In order to facilitate the management and control of the pipelines, valves, including gate valves, need to be installed at the corresponding locations of the pipelines. A gate valve includes an internal gate, valve body, actuators, etc. The opening and closing of the transportation route is achieved by the movement of the gate inside the valve body.

[0003] The existing gate valve has a simple gate structure and is insufficient in active sealing operation. Its sealing effect needs to be further improved in high-temperature and high-pressure environments. Utility Model Content

[0004] The purpose of this invention is to provide a forged structure for a high-temperature and high-pressure self-sealing gate valve for petroleum refining that can improve the fit of the gate plate inside the valve body, and at the same time, can perform active sealing operation under high temperature and high pressure conditions, with a strong sealing effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A high-temperature and high-pressure self-sealing gate valve forging structure for petroleum refining includes a sealing seat, a gate plate is provided on the inner side of the sealing seat, a plurality of side sealing protrusions are integrally connected on the side surface of the gate plate, a plurality of first sealing grooves are provided on the inner side of the sealing seat, the side sealing protrusions fit into the first sealing grooves, and the cross-section of the side sealing protrusions is semi-circular.

[0007] By adopting the above technical solution, the sealing effect of the gate side can be effectively improved, thereby improving the sealing effect of the entire gate inside the valve body.

[0008] Furthermore, a surface sealing protrusion is integrally connected to each of the symmetrical outer surfaces of the gate, and the surface sealing protrusion is in the shape of a ring.

[0009] By adopting the above technical solution, a single sealing operation can be performed.

[0010] Furthermore, a second sealing groove is provided on the outer surface of the surface sealing protrusion. The second sealing groove is annular and is filled with first expanded graphite.

[0011] By adopting the above technical solution, the first expanded graphite can be used to perform active sealing operation in a high-temperature environment.

[0012] Furthermore, an annular sealing ring is slidably installed at the opening of the second sealing groove.

[0013] By adopting the above technical solution, the sealing effect can be further improved by using a sealing ring.

[0014] Furthermore, a plurality of third sealing grooves are provided on the outer surface of the sealing seat, and the interior of the third sealing grooves is filled with second expanded graphite.

[0015] By adopting the above technical solution, the sealing effect of the sealing seat can be improved by using a second expanded graphite.

[0016] Furthermore, a connection hole is provided at the middle position of the end face of the gate.

[0017] By adopting the above technical solution, the connection of the screw is facilitated.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] 1. This utility model can install the sealing seat inside the valve body, and then slide the gate plate inside the sealing seat so that the side sealing protrusion matches the first sealing groove. Therefore, during the closing process of the gate valve, the tight fit between the gate plate and the sealing seat can achieve a better sealing effect.

[0020] 2. This utility model provides a surface sealing protrusion on each of the symmetrical surfaces of the gate plate. The surface sealing protrusions can achieve a first sealing operation by adhering to the inner wall of the valve body. Furthermore, a second sealing groove is provided on the outer surface of the surface sealing protrusion. The interior of the second sealing groove is filled with first expanded graphite. An annular sealing ring is slidably installed at the opening of the second sealing groove. When encountering high-temperature scenarios, the first expanded graphite expands due to heat, pushing the annular sealing ring to move. This allows the annular sealing ring to adhere tightly to the inner wall of the valve body, achieving a second sealing operation. The overall sealing effect is further improved, making it more adaptable to high-temperature and high-pressure environments. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural perspective view of the present invention;

[0022] Figure 2 This utility model Figure 1 Enlarged view of point A.

[0023] In the figure: 1. Sealing seat; 2. First sealing groove; 3. Gate plate; 4. Side sealing protrusion; 5. Surface sealing protrusion; 6. Second sealing groove; 7. First expanded graphite; 8. Sealing ring; 9. Connecting hole; 10. Second expanded graphite. Detailed Implementation

[0024] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 , Figure 2 The high-temperature and high-pressure self-sealing gate valve forging structure for petroleum refining includes a sealing seat 1, a gate plate 3 on the inner side of the sealing seat 1, multiple side sealing protrusions 4 integrally connected to the side surface of the gate plate 3, multiple first sealing grooves 2 on the inner side of the sealing seat 1, the side sealing protrusions 4 fitting with the first sealing grooves 2, the cross-section of the side sealing protrusions 4 being semi-circular, multiple third sealing grooves on the outer surface of the sealing seat 1, and the interior of the third sealing grooves being filled with second expanded graphite 10, a connecting hole 9 at the middle position of the end face of the gate plate 3, through which the sealing seat 1 can be installed inside the valve body, and then the gate plate 3 is slidably installed inside the sealing seat 1, so that the side sealing protrusions 4 fit with the first sealing grooves 2. Therefore, during the closing process of the gate valve, the tight fit between the gate plate 3 and the sealing seat 1 can achieve a better sealing effect.

[0026] Reference Figure 1 Each of the symmetrical outer surfaces of the gate plate 3 has an integrally connected surface sealing protrusion 5, which is annular in shape. A second sealing groove 6 is provided on the outer surface of the surface sealing protrusion 5, which is also annular in shape. The interior of the second sealing groove 6 is filled with first expanded graphite 7, and an annular sealing ring 8 is slidably installed at the opening of the second sealing groove 6. By providing a surface sealing protrusion 5 on each of the symmetrical surfaces of the gate plate 3, the surface sealing protrusion 5 can achieve a first sealing operation by adhering to the inner wall of the valve body. Furthermore, since the second sealing groove 6 is provided on the outer surface of the surface sealing protrusion 5, the interior of the second sealing groove 6 is filled with first expanded graphite 7, and the annular sealing ring 8 is slidably installed at the opening of the second sealing groove 6, the first expanded graphite 7 can expand when heated in high-temperature environments, pushing the annular sealing ring 8 to move, so that the annular sealing ring 8 can tightly adhere to the inner wall of the valve body, achieving a second sealing operation. The overall sealing effect is further improved, and the adaptability is stronger in the face of high-temperature and high-pressure environments.

[0027] Working principle: In use, first install the sealing seat 1 inside the valve body, then slide the gate 3 inside the sealing seat 1, and then install the traction screw inside the connecting hole 9. When the gate valve needs to be opened or closed, the screw drives the gate 3 to slide inside the sealing seat 1, causing the side sealing protrusion 4 to engage with the first sealing groove 2. Therefore, during the closing process of the gate valve, the tight fit between the gate 3 and the sealing seat 1 provides a better sealing effect. Since a surface sealing protrusion 5 is provided on each of the symmetrical surfaces of the gate 3, the surface sealing protrusion 5 and the valve body can be used for sealing. The inner wall of the valve body is in close contact to achieve a first sealing operation. Furthermore, a second sealing groove 6 is provided on the outer surface of the surface sealing protrusion 5. The second sealing groove 6 is filled with a first expanded graphite 7. An annular sealing ring 8 is slidably installed at the opening of the second sealing groove 6. When encountering high temperature scenarios, the first expanded graphite 7 expands due to heat, pushing the annular sealing ring 8 to move, so that the annular sealing ring 8 can be tightly attached to the inner wall of the valve body, achieving a second sealing operation. The overall sealing effect is further improved, and the valve body is more adaptable to high temperature and high pressure environments.

[0028] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A forged structure for a high-temperature, high-pressure self-sealing gate valve for petroleum refining, comprising a sealing seat (1), characterized in that: The inner side of the sealing seat (1) is provided with a gate (3), and a plurality of side sealing protrusions (4) are integrally connected on the side surface of the gate (3). A plurality of first sealing grooves (2) are provided on the inner side of the sealing seat (1). The side sealing protrusions (4) fit into the first sealing grooves (2), and the cross-section of the side sealing protrusions (4) is semi-circular.

2. The high-temperature, high-pressure self-sealing gate valve forging structure for petroleum refining as described in claim 1, characterized in that: Each of the symmetrical outer surfaces of the gate (3) is integrally connected with a surface sealing protrusion (5), which is in the shape of a ring.

3. The high-temperature and high-pressure self-sealing gate valve forging structure for petroleum refining as described in claim 2, characterized in that: A second sealing groove (6) is provided on the outer surface of the surface sealing protrusion (5). The second sealing groove (6) is annular and is filled with first expanded graphite (7).

4. The high-temperature and high-pressure self-sealing gate valve forging structure for petroleum refining as described in claim 3, characterized in that: An annular sealing ring (8) is slidably installed at the opening of the second sealing groove (6).

5. The high-temperature, high-pressure self-sealing gate valve forging structure for petroleum refining as described in claim 1, characterized in that: The outer surface of the sealing seat (1) is provided with a plurality of third sealing grooves, and the interior of the third sealing grooves is filled with second expanded graphite (10).

6. The high-temperature, high-pressure self-sealing gate valve forging structure for petroleum refining as described in claim 1, characterized in that: A connection hole (9) is provided at the middle position of the end face of the gate (3).

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