A ring belt pressure relief valve

Abstract

The application discloses a ring pressure release valve, which comprises a main body, an intermediate cavity is formed in the main body, an extension column is vertically formed in the center of the intermediate cavity, an air outlet channel and an installation channel are formed in the extension column and are communicated with each other, the air outlet channel and the installation channel respectively penetrate the main body downward and upward, a pair of air inlet holes are formed in the bottom of the installation channel, a pair of first air outlet holes are formed in the middle of the installation channel, the air inlet holes are communicated with the intermediate cavity and the lower part of the installation channel, the first air outlet holes are communicated with the intermediate cavity and the middle part of the installation channel, a pair of second air outlet holes are formed in the main body and are communicated with the outside and the middle part of the installation channel, a sliding rod is longitudinally arranged in the installation channel, a fixed plug is arranged at the bottom of the sliding rod, a spring is arranged at the top of the fixed plug, and the spring is sleeved on the sliding rod.

Description

Technical Field

[0001] This application relates to the field of pressure relief valve technology, and in particular to a pressure relief valve with a ring. Background Technology

[0002] Pressure relief valves are critical safety components widely used in pressure vessels, pipeline systems, gas storage equipment, and various devices requiring pressure protection. Existing pressure relief valves, such as the American-style transformer substation instrument relief valve disclosed in announcement number CN215635182U, can control the valve's on / off state by pulling a pull ring. They only have conventional on / off functions and cannot accurately and quantitatively release gas, nor can they reduce the impact when releasing pressure, especially when releasing high-pressure gas.

[0003] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is the closest prior art to this application. Summary of the Invention

[0004] Based on this, this application provides a pressure relief valve with a ring to solve one of the above-mentioned technical problems.

[0005] The technical solution adopted by this application to solve its technical problem is: a pressure relief valve with a ring, comprising: a main body having an internal intermediate cavity, an extension column vertically formed at the center of the intermediate cavity, an interconnected air outlet channel and an installation channel forming inside the extension column, the air outlet channel and the installation channel respectively penetrating the main body downwards and upwards; a pair of air inlets are provided at the bottom of the installation channel, and a pair of first air outlets are provided in the middle, the air inlets connecting the intermediate cavity and the lower part of the installation channel, the first air outlets connecting the intermediate cavity and the middle part of the installation channel, and a pair of second air outlets connecting the outside and the middle part of the installation channel are also provided on the main body; a sliding rod is longitudinally arranged inside the installation channel, a fixed blocking block is provided at the bottom of the sliding rod, a spring is provided at the top of the fixed blocking block, the spring is sleeved on the sliding rod, a sliding blocking block is also sleeved on the sliding rod, the sliding blocking block is fixed to the top of the spring, and a ring is provided at the top of the sliding rod;

[0006] When the sliding rod is pulled upward by the belt ring, the air outlet channel and the air inlet are connected, and the first air outlet is sealed by the sliding block; when the belt ring is released, the air outlet channel is closed, and the first air outlet and the second air outlet are connected.

[0007] In some embodiments, the inner diameter of the mounting channel is larger than that of the air outlet channel, and both the mounting channel and the air outlet channel protrude longitudinally from the main body.

[0008] In some embodiments, the two ends of the installation channel are funnel-shaped, the bottom of the fixed blocking block is a matching trapezoidal structure, and both the fixed blocking block and the sliding blocking block have fixed grooves on their side walls, with a sealing ring fixedly fitted inside the fixed groove.

[0009] In some embodiments, the outer walls of the fixed blocking block and the sliding blocking block are in close contact with the inner wall of the installation channel.

[0010] In some embodiments, the second vent is opened at an angle downwards, with its port facing downwards on the outer surface of the main body.

[0011] In some embodiments, a limiting post extends horizontally on the side wall of the sliding rod, and an L-shaped limiting groove is provided at the top of the mounting channel, with the limiting post moving within the limiting groove.

[0012] The beneficial effects of this application are as follows: by pulling the belt ring, the fixed blocking block at the end of the sliding rod releases the seal on the air intake channel. At this time, the sliding blocking block completely blocks the connection between the first and second air outlets, allowing the gas in the container that needs to be depressurized to enter the intermediate cavity in a measured amount. At this time, the gas pressure in the intermediate cavity is balanced with the gas pressure in the container. Then, the belt ring is released, and under the spring restoring force, the sliding rod returns to its original position and the limiting post limits and fixes the sliding block. At this time, the fixed blocking block reseals the air intake channel, while the first and second air outlets above are connected. The high-pressure gas in the intermediate cavity is released to the outside, which can release the gas in a measured amount at one time and can reduce the impact force when the high-pressure gas is released. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional schematic diagram of this application.

[0015] Figure 2 This is a cross-sectional schematic diagram of this application.

[0016] Figure 3 This is a schematic diagram of the sliding rod in this application.

[0017] Explanation of reference numerals: 1. Main body, 2. Intermediate cavity, 3. Extension column, 4. Air outlet channel, 5. Installation channel, 6. Air inlet, 7. First air outlet, 8. Second air outlet, 9. Sliding rod, 10. Fixed blocking block, 11. Sliding blocking block, 12. Spring, 13. Ring, 14. Fixed groove, 15. Sealing ring, 16. Limiting column, 17. Limiting groove. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0019] In the embodiments of this application, please refer to Figure 1-3 As shown, this type of pressure relief valve with a ring mainly includes: a main body 1, which has an internal intermediate cavity 2. An extension column 3 is vertically formed at the center of the intermediate cavity 2. An interconnected air outlet channel 4 and an installation channel 5 are formed inside the extension column 3. The air outlet channel 4 and the installation channel 5 penetrate the main body 1 downwards and upwards, respectively. A pair of air inlets 6 are opened at the bottom of the installation channel 5, and a pair of first air outlets 7 are opened in the middle. The air inlets 6 connect the intermediate cavity 2 and the lower part of the installation channel 5, and the first air outlets 7 connect the intermediate cavity 2 and the middle part of the installation channel 5. A pair of second air outlets 8 are also opened on the main body 1, connecting the outside and the middle part of the installation channel 5. A sliding rod 9 is longitudinally arranged within the installation channel 5. A fixed blocking block 10 is provided at the bottom of the sliding rod 9, and a spring 12 is provided at the top of the fixed blocking block 10. The spring 12 is sleeved on the sliding rod 9, and a sliding blocking block 11 is also sleeved on the sliding rod 9. The sliding blocking block 11 is fixed to the top of the spring 12, and a belt ring 13 is provided at the top of the sliding rod 9. After the sliding rod 9 is pulled upward by the belt ring 13, the air outlet channel 4 and the air inlet 6 are connected, and the first air outlet 7 is sealed by the sliding blocking block 11. After the belt ring 13 is released, the air outlet channel 4 is closed, and the first air outlet 7 and the second air outlet 8 are connected.

[0020] The following will continue to describe some preferred / improved embodiments based on the above embodiments. Any one of the following embodiments can be selected, or multiple embodiments can be combined.

[0021] like Figure 2 As shown, the inner diameter of the mounting channel 5 is larger than that of the air outlet channel 4. Both the mounting channel 5 and the air outlet channel 4 protrude longitudinally from the main body 1. The bottom air outlet channel 4 is used for installation and embedding in the container that needs to be depressurized, while the top mounting channel 5 is exposed for operation.

[0022] Specifically, the two ends of the installation channel 5 are funnel-shaped, and the bottom of the fixed blocking block 10 is a matching trapezoidal structure. Both the fixed blocking block 10 and the sliding blocking block 11 have fixed grooves 14 on their side walls. A sealing ring 15 is fixedly fitted inside the fixed groove 14. The fixed sealing plug can press against the port of the air outlet channel 4 under the action of the spring 12 and its own gravity. The sliding rod 9 is lifted by the pull ring until the fixed blocking block 10 is above the air inlet 6. At this time, the air inlet channel and the air inlet 6 are connected, and the first air outlet channel 4 and the second air outlet channel 4 are blocked by the sliding blocking block 11. The gas in the container that needs to be depressurized enters the intermediate cavity 2. And maintain air pressure balance; after the belt ring 13 is loosened, under the force of the spring 12 returning to its original position, the sliding rod 9 returns to its original position, the fixed blocking block 10 re-blocks the air intake channel, and the sliding blocking block 11 moves down, releasing the obstruction of the area between the first air outlet 7 and the second air outlet 8, and the first air outlet 7 and the second air outlet 8 are connected, and the gas in the intermediate cavity 2 is discharged from the second air outlet 8 in a measured amount. While the fixed blocking block 10 blocks the air intake channel, the sliding blocking block 11 releases the obstruction of the area between the first air outlet 7 and the second air outlet 8, ensuring that the leakage of gas in the container can be avoided when the belt ring 13 is loosened, and only the gas in the intermediate cavity 2 is discharged.

[0023] Furthermore, the outer walls of the fixed blocking block 10 and the sliding blocking block 11 are tightly attached to the inner wall of the installation channel 5. This tight assembly can further improve the sealing performance and, together with the sealing ring 15, better play a directional blocking and sealing role.

[0024] Specifically, the second vent 8 is opened at an angle downwards, with its port on the outer surface of the main body 1 facing downwards. When installing the pressure relief valve, the second vent 8 should be kept away from important components to avoid damage to the components. The second vent 8 should be placed externally to avoid injury to components and personnel.

[0025] like Figure 1 As shown, a limiting post 16 extends horizontally on the side wall of the sliding rod 9, and an L-shaped limiting groove 17 is provided at the top of the installation channel 5. The limiting post 16 moves within the limiting groove 17. When the pressure relief valve is not vertical (horizontal or inverted), the sliding rod 9 can be limited to a specific position by the cooperation of the limiting post 16 and the limiting groove 17, so as to ensure that the fixed blocking block 10 can seal the air outlet channel 4 in the non-vertical state.

[0026] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A pressure relief valve with a ring, characterized in that, include: The main body has an internal cavity, and an extension column is vertically formed at the center of the internal cavity. An air outlet channel and an installation channel are formed inside the extension column, which are respectively connected downward and upward through the main body. The installation channel has a pair of air inlets at the bottom and a pair of first air outlets in the middle. The air inlets connect the intermediate cavity and the lower part of the installation channel, and the first air outlets connect the intermediate cavity and the middle part of the installation channel. The main body also has a pair of second air outlets that connect the outside and the middle of the installation channel. A sliding rod is longitudinally arranged in the installation channel. A fixed blocking block is provided at the bottom of the sliding rod, and a spring is provided at the top of the fixed blocking block. The spring is sleeved on the sliding rod, and a sliding blocking block is also sleeved on the sliding rod. The sliding blocking block is fixed to the top of the spring, and a ring is provided at the top of the sliding rod. When the sliding rod is pulled upward by the belt ring, the air outlet channel and the air inlet are connected, and the first air outlet is sealed by the sliding block; when the belt ring is released, the air outlet channel is closed, and the first air outlet and the second air outlet are connected.

2. The pressure relief valve with ring according to claim 1, characterized in that, The inner diameter of the mounting channel is larger than that of the air outlet channel, and both the mounting channel and the air outlet channel protrude longitudinally from the main body.

3. The pressure relief valve with ring according to claim 1, characterized in that, The two ends of the installation channel are funnel-shaped, and the bottom of the fixed blocking block is a matching trapezoidal structure. Both the fixed blocking block and the sliding blocking block have fixed grooves on their side walls, and a sealing ring is fixedly fitted in the fixed groove.

4. A pressure relief valve with a ring according to claim 1, characterized in that, The outer walls of the fixed blocking block and the sliding blocking block are in close contact with the inner wall of the installation channel.

5. A pressure relief valve with a ring according to claim 1, characterized in that, The second vent is opened at an angle downwards, with its port on the outer surface of the main body facing downwards.

6. A pressure relief valve with a ring according to claim 1, characterized in that, A limiting post extends horizontally on the side wall of the sliding rod, and an L-shaped limiting groove is provided at the top of the installation channel, with the limiting post moving within the limiting groove.

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