Heat dissipation type high-temperature and high-pressure blind plate valve

Abstract

The utility model belongs to the technical field of structural improvement of high-temperature and high-pressure blind plate valves, and particularly relates to a heat dissipation type high-temperature and high-pressure blind plate valve which comprises a left valve body and a right valve body, a left sealing seat is arranged at the right end of the left valve body, a right sealing seat is arranged at the left end of the right valve body, and a blind plate capable of swinging is arranged between the left valve body and the right valve body. A blind hole plate and a through hole plate are arranged on the blind plate, sealing assemblies corresponding to the left sealing seat and the right sealing seat are arranged on the blind hole plate and the through hole plate, each sealing assembly comprises at least one heat-resisting sealing ring and further comprises a graphite heat-insulating sealing ring, and the graphite heat-insulating sealing rings are located on the inner sides of the heat-resisting sealing rings; the outer sides of the corners of the left valve body and the left sealing seat and the outer sides of the corners of the right valve body and the right sealing seat are both connected with a plurality of cooling fins. According to the utility model, the heat-resistant sealing ring can be prevented from being in a high-temperature working condition, the sealing failure caused by high-temperature deformation of the heat-resistant sealing ring is effectively prevented, and the service life of the heat-resistant sealing ring is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to a heat dissipation type high temperature and high pressure blind plate valve, belonging to the technical field of high temperature and high pressure blind plate valve structure improvement. Background Technology

[0002] Blind plate valves, also known as spectacle valves or sector valves, are indispensable shut-off devices in pipeline systems. They are primarily used in metallurgy, chemical, petroleum, and municipal industries to quickly and reliably block the flow of media within pipelines when necessary, ensuring pipeline maintenance, replacement, and the safe and normal operation of the system. High-temperature and high-pressure blind plate valves, as a type of blind plate valve, offer superior high-temperature resistance and sealing performance compared to traditional blind plate valves, making them more reliable for gas pipeline control under complex high-temperature conditions. Existing high-temperature and high-pressure blind plate valve structures mainly consist of a left valve body and a right valve body, with a blind plate positioned between them. The blind plate has a blind orifice plate and a through-hole plate, allowing it to swing between the left and right valve bodies, thus switching between the blind orifice plate and the through-hole plate. Both sides of the blind orifice plate and the through-hole plate are embedded with high-temperature resistant sealing rings, which seal the left and right valve bodies to prevent media leakage. However, due to the high operating temperatures, the high-temperature resistant sealing rings are prone to sealing failure under high temperatures, resulting in a relatively short service life.

[0003] To address this, Chinese utility model patent CN218718924U discloses a high-temperature blind flange valve. The aforementioned prior art involves placing two heat-insulating second sealing rings inside the two temperature-resistant first sealing rings, thereby preventing the high-temperature medium in the pipeline from conducting heat to the first sealing rings, indirectly improving the service life of the first sealing rings. However, the high-temperature medium in the pipeline can still transfer heat to the sealing surface of the first sealing rings through the valve body, easily leading to sealing failure and poor performance. Utility Model Content

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a heat dissipation type high temperature and high pressure blind valve that can effectively increase the service life of the heat-resistant sealing ring.

[0005] The heat-dissipating high-temperature and high-pressure blind flange valve of this utility model includes a left valve body and a right valve body. The right end of the left valve body is provided with a left sealing seat, and the left end of the right valve body is provided with a right sealing seat. A swingable blind flange is provided between the left and right valve bodies. The blind flange is provided with a blind hole plate and a through hole plate. Sealing components are provided on the blind hole plate and the through hole plate corresponding to the left and right sealing seats. The sealing components include at least one heat-resistant sealing ring and a graphite heat-insulating sealing ring located inside the heat-resistant sealing ring. Several heat dissipation fins are connected to the outer corners of the left valve body and the left sealing seat, as well as the outer corners of the right valve body and the right sealing seat.

[0006] Furthermore, the sealing assembly includes two heat-resistant sealing rings, which are arranged in inner and outer layers, and both heat-resistant sealing rings are located on the outer side of the graphite heat-insulating sealing ring.

[0007] Furthermore, multiple reinforcing ribs are welded to the outer walls of both the left and right valve bodies.

[0008] Furthermore, the heat sink is provided with a right-angle bayonet.

[0009] Working principle and process:

[0010] In use, the graphite heat-insulating sealing ring can prevent the heat of the high-temperature medium in the pipeline from being transferred to the heat-resistant sealing ring through the gap between the blind plate and the left sealing seat and the gap between the blind plate and the right sealing seat, thus providing heat insulation for the heat-resistant sealing ring. By setting heat dissipation fins, the contact area between the left and right sealing seats and the outside atmosphere can be greatly increased, thereby facilitating timely heat dissipation from the left and right sealing seats and effectively reducing the heat transfer from the left and right sealing seats to the heat-resistant sealing ring.

[0011] The advantages of this utility model compared with the prior art are:

[0012] The heat-dissipating high-temperature and high-pressure blind valve of this utility model uses a graphite heat-insulating sealing ring to insulate the heat-resistant sealing ring, and uses heat sinks to reduce heat transfer between the left and right sealing seats to the heat-resistant sealing ring. This prevents the heat-resistant sealing ring from being in high-temperature operating conditions, effectively preventing sealing failure caused by high-temperature deformation of the heat-resistant sealing ring, and greatly increasing the service life of the heat-resistant sealing ring. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0014] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the distribution structure of the heat sink on the left sealing seat in an embodiment of this utility model.

[0016] In the diagram: 1. Left valve body; 2. Blind flange; 3. Right valve body; 4. Heat-resistant sealing ring; 5. Graphite heat-insulating sealing ring; 6. Left sealing seat; 7. Right sealing seat; 8. Heat sink; 9. Reinforcing rib; 10. Right-angle bayonet. Detailed Implementation

[0017] The embodiments of this utility model will be further described below with reference to the accompanying drawings:

[0018] Example 1:

[0019] like Figures 1 to 3 As shown, the heat dissipation type high temperature and high pressure blind plate valve of this utility model includes a left valve body 1 and a right valve body 3. The right end of the left valve body 1 is provided with a left sealing seat 6, and the left end of the right valve body 3 is provided with a right sealing seat 7. A swingable blind plate 2 is provided between the left valve body 1 and the right valve body 3. The blind plate 2 is provided with a blind hole plate and a through hole plate. Sealing components are provided on the blind hole plate and the through hole plate corresponding to the left sealing seat 6 and the right sealing seat 7. The sealing components include at least one heat-resistant sealing ring 4, and the sealing components also include a graphite heat-insulating sealing ring 5, which is located inside the heat-resistant sealing ring 4. Several heat dissipation fins 8 are connected to the outer corner of the left valve body 1 and the left sealing seat 6, and the outer corner of the right valve body 3 and the right sealing seat 7.

[0020] In use, the graphite heat-insulating sealing ring 5 prevents the heat of the high-temperature medium in the pipeline from being transferred to the heat-resistant sealing ring 4 through the gaps between the blind flange 2 and the left sealing seat 6, and between the blind flange 2 and the right sealing seat 7, thus providing heat insulation for the heat-resistant sealing ring 4. By setting the heat dissipation fins 8, the contact area between the left and right sealing seats 6 and the outside atmosphere is greatly increased, facilitating timely heat dissipation from the left and right sealing seats 6 and 7, effectively reducing heat transfer from the left and right sealing seats 6 and 7 to the heat-resistant sealing ring 4. By setting the graphite heat-insulating sealing ring 5 to insulate the heat-resistant sealing ring 4, and by setting the heat dissipation fins 8 to reduce heat transfer from the left and right sealing seats 6 and 7 to the heat-resistant sealing ring 4, the heat-resistant sealing ring 4 is prevented from operating under high-temperature conditions, effectively preventing sealing failure caused by high-temperature deformation, and greatly increasing the service life of the heat-resistant sealing ring 4.

[0021] Example 2:

[0022] like Figures 1 to 3 As shown, based on Example 1,

[0023] Furthermore, the sealing assembly includes two heat-resistant sealing rings 4, which are arranged in inner and outer layers, and both heat-resistant sealing rings 4 are located outside the graphite heat-insulating sealing ring 5. By setting two heat-resistant sealing rings 4, double sealing of the left valve body 1 and the right valve body 3 can be achieved, thereby effectively preventing valve body leakage and reducing the frequency of valve body maintenance.

[0024] Furthermore, multiple reinforcing ribs 9 are welded to the outer walls of both the left valve body 1 and the right valve body 3. The reinforcing ribs 9 can increase the structural strength of the left sealing seat 6 and the right sealing seat 7, and prevent valve body leakage due to deformation of the left sealing seat 6 or the right sealing seat 7.

[0025] Furthermore, the heat sink 8 is provided with a right-angle bayonet 10. The heat sink 8 is secured to the left sealing seat 6 or the right sealing seat 7 through the right-angle bayonet 10 and then welded. On the one hand, this increases the welding path, thereby improving the structural stability of the heat sink 8. On the other hand, it can simultaneously dissipate heat from the rear and side walls of the left sealing seat 6 and the right sealing seat 7, further improving the heat dissipation effect of the left sealing seat 6 and the right sealing seat 7.

[0026] It should be noted that in the description of this utility model, the terms "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A heat-dissipating high-temperature and high-pressure blind flange valve, comprising a left valve body (1) and a right valve body (3), wherein a left sealing seat (6) is provided at the right end of the left valve body (1), a right sealing seat (7) is provided at the left end of the right valve body (3), and a swingable blind flange (2) is provided between the left valve body (1) and the right valve body (3), wherein a blind hole plate and a through hole plate are provided on the blind flange (2), characterized in that: The blind hole plate and the through hole plate are provided with sealing components corresponding to the left sealing seat (6) and the right sealing seat (7). The sealing components include at least one heat-resistant sealing ring (4) and a graphite heat-insulating sealing ring (5). The graphite heat-insulating sealing ring (5) is located inside the heat-resistant sealing ring (4). Several heat sinks (8) are connected to the outer corner of the left valve body (1) and the left sealing seat (6) and the outer corner of the right valve body (3) and the right sealing seat (7).

2. The heat-dissipating high-temperature and high-pressure blind valve according to claim 1, characterized in that: The sealing assembly includes two heat-resistant sealing rings (4), which are arranged in inner and outer layers, and both heat-resistant sealing rings (4) are located on the outside of the graphite heat-insulating sealing ring (5).

3. The heat-dissipating high-temperature and high-pressure blind plate valve according to claim 1, characterized in that: Multiple reinforcing ribs (9) are welded to the outer walls of both the left valve body (1) and the right valve body (3).

4. The heat-dissipating high-temperature and high-pressure blind plate valve according to claim 1, characterized in that: The heat sink (8) is provided with a right-angle bayonet (10).

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