Bleeding valve
By designing a step-by-step discharge pipe and a fastening plate with a sector-shaped structure in the discharge valve, combined with the coordination of the limiting baffle and the core head, step-by-step pressure relief is achieved, solving the problem of unbalanced pressure distribution of the existing discharge valve, ensuring the stable and safe operation of the discharge valve.
Patent Information
- Application Number
- CN202421339757.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-12
AI Technical Summary
Existing discharge valves cannot achieve pressure distribution balance when step by step pressure relief, resulting in excessive pressure relief or insufficient pressure relief.
A discharge valve is designed, which includes several sets of discharge tubes and fastening plates in a step-by-step distribution, and the pressure relief step-by-step is achieved through the coordination of the limiting pad and the core head, and the excess gas is collected through the air conduit and the check valve.
During the release process, the pressure relief is achieved through the wide-mouth opening step by step, ensuring the stable use of the discharge valve and avoiding excessive or insufficient pressure relief.
Smart Images
Figure CN222669038U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gas pipeline interfaces, and in particular relates to a relief valve. Background Art
[0002] The relief valve is a safety warning device for pipeline transportation of flammable and explosive gases. When the pressure in the pipeline exceeds the set value (bubble burst pressure) due to some temporary reason, the relief valve will automatically discharge a certain amount of gas to prevent the pipeline system from being damaged or causing safety accidents due to overpressure.
[0003] The safety relief valve is a commonly used safety device. Its working principle is based on the principles of fluid statics and dynamics. By adjusting the pressure set point on the spring or piston, the valve opens when the pressure exceeds the set value to release the excessive internal pressure, thereby protecting the safe operation of the pressure vessel and pipeline system. However, the relief valves currently on the market cannot achieve balanced pressure distribution in step-by-step pressure relief. The reason is that the pressure relief opening is too small, resulting in excessive or insufficient pressure relief. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a relief valve. By distributing several groups of relief pipes in stages and setting their cross-sections to a fan-shaped structure with a larger opening, pressure relief can be achieved through the wide-mouth opening in stages during the relief process, thereby ensuring the stable use of the relief valve.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A relief valve comprises a valve body, a relief core and a valve cover, wherein the valve body is a cylindrical structure with a hollow interior and an opening at one end, the valve body is provided with a limit baffle which divides the inner cavity into an air inlet cavity and a relief cavity, the air inlet pipe and the air outlet pipe provided on the valve body are respectively connected to the air inlet cavity, a fastening plate is provided at the opening of the valve body, and the valve body is also provided with a relief pipe which is respectively connected to the relief cavity and the fastening plate; the relief core comprises a core head and a spring, the outer side wall of the core head is matched with the inner side wall of the relief cavity, and one end of the spring abuts against the side surface of the core head; the valve cover The vent pipe is connected to the valve body in a detachable manner, and the other end of the spring is in contact with the valve cover. The valve cover is provided with an air guide pipe, and the air guide pipe is connected with the release group pipe. The release pipe includes several groups, and the release pipes in several groups are parallel to the central axis of the valve body and are distributed outward in stages in sequence. The connection points between the release pipes in several groups and the valve body are distributed in stages in sequence along the direction of the limit baffle toward the fastening plate. The connection points between the release pipes in several groups and the fastening plate are all connected with the air guide pipe. The connection between the release pipes in several groups on the fastening plate is in a fan-shaped structure that expands outward in stages on the fastening plate.
[0007] The relief valve adopts this structure, and the inner cavity of the valve body is divided into an air inlet cavity and a relief cavity by a limit baffle. The air inlet cavity is connected to the air inlet pipe and the air outlet pipe for normal valve circulation, while the relief cavity is connected to the opening of the valve body, and a fastening plate is provided at the opening of the valve body. A plurality of relief pipes are connected to the relief cavity and the fastening plate respectively. Therefore, when the valve cover is closed on the fastening plate, the relief cavity forms a relatively closed space, and only the air inlet cavity, the relief cavity and the relief pipe are connected in sequence. In order to achieve step-by-step pressure relief, a plurality of relief pipes are connected in the relief cavity. When the valve cap is in the air, the pressure at the valve cap is increased, and the spring forces the valve cap to move upward, until the valve cap is in the air, and the spring forces the valve cap to move horizontally, until the first valve cap is exposed, and the valve cap is in the air. In the pipe, since the connection points of several groups of vent pipes and the valve body are distributed step by step along the direction of the limit baffle toward the fastening plate, when the air pressure continues to rise, the first vent pipe cannot meet the pressure relief demand, and the pressure will continue to be pressed on the core head until the second and third vent pipes are exposed, presenting a step-by-step pressure relief, and several groups of vent pipes are respectively parallel to the center axis of the valve body and are distributed step by step outward in sequence, and the connection on the fastening plate is in a fan-shaped structure that expands step by step on the fastening plate, and the connection points of several groups of vent pipes and the fastening plate are all connected to the guide pipe. Therefore, each level of pressure relief will be concentrated from the air guide pipe, and the release pipe and the release cavity that have not been crossed by the core head are in a relatively stable closed space. Therefore, when the pressure is relieved, the previous level of release pipe will not flow back from the vent pipe to the release cavity, and can only be discharged from the vent pipe with a smaller air pressure. A one-way valve can be set on the air guide pipe and connected to the air storage tank to collect the excess pressure-relieved gas for subsequent reuse. The fan-shaped structure can increase the pressure relief area, which is better than pressure relief in the form of pipes alone.
[0008] Furthermore, a sealing ring is provided on the inner wall of the relief chamber, a groove is provided on the outer wall of the core head, and the sealing ring cooperates with the groove; the sealing ring includes several groups, and several groups of the sealing rings are respectively arranged between the connecting parts of several groups of relief valves and the valve body.
[0009] Compared with the prior art, the advantages of the utility model are: through the separated air intake chamber and the discharge chamber, the air intake chamber plays a basic valve ventilation effect, and the core head in the discharge chamber is closed by the compression force of the spring. When the air pressure in the air intake chamber is too high, the air pressure will push the core head to compress and expose the discharge pipe, and the discharge pipe distributed outward in stages has the effect of step-by-step pressure relief. At the same time, the connection between several discharge pipes and the fastening plate is set to a fan-shaped structure that expands outward in stages, thereby increasing the pressure relief area and ensuring the stability of the pressure relief process. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0011] Figure 1 It is a three-dimensional diagram of the utility model;
[0012] Figure 2 This is a frontal exploded schematic diagram of the utility model;
[0013] Figure 3 It is a rear exploded schematic diagram of the utility model;
[0014] Figure 4 It is a partial cross-sectional front exploded schematic diagram of the utility model.
[0015] Among them: 1. valve body; 11. limit baffle; 12. air inlet chamber; 13. exhaust chamber; 14. air inlet pipe; 15. air outlet pipe; 16. fastening plate; 17. exhaust pipe; 18. sealing ring; 2. exhaust core; 21. core head; 211. groove; 22. spring; 3. valve cover; 31. air guide pipe. DETAILED DESCRIPTION
[0016] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0017] The specific implementation of the utility model will be described below in conjunction with the accompanying drawings:
[0018] like Figure 1-4As shown, a relief valve comprises a valve body 1, a relief core 2 and a valve cover 3, wherein the valve body 1 is a cylindrical structure with a hollow interior and an opening at one end, wherein a limit stopper 11 is provided in the valve body 1 for dividing the inner cavity into an air inlet cavity 12 and a relief cavity 13, wherein an air inlet pipe 14 and an air outlet pipe 15 are provided on the valve body 1 and are respectively connected to the air inlet cavity 12, wherein a fastening plate 16 is provided at the opening of the valve body 1, and a relief pipe 17 is further provided on the valve body 1 and is respectively connected to the relief cavity 13 and the fastening plate 16; wherein the relief core 2 comprises a core head 21 and a spring 22, wherein the outer side wall of the core head 21 is matched with the inner side wall of the relief cavity 13, and one end of the spring 22 abuts against the side surface of the core head 21; The valve cover 3 is detachably connected to the fastening plate 16, and the other end of the spring 22 abuts against the valve cover 3. An air guide pipe 31 is provided on the valve cover 3, and the air guide pipe 31 is connected to the release group pipe; the release pipe 17 includes a plurality of groups, and the plurality of groups of release pipes 17 are respectively parallel to the central axis of the valve body 1 and are distributed outward in stages in sequence. The connection points of the plurality of release pipes 17 and the valve body 1 are distributed in stages in sequence along the direction of the limit baffle 11 toward the fastening plate 16, and the connection points of the plurality of release pipes 17 and the fastening plate 16 are all connected to the air guide pipe 31; the connection of the plurality of release pipes 17 on the fastening plate 16 is in a fan-shaped structure that expands outward in stages on the fastening plate 16.
[0019] Furthermore, a sealing ring 18 is provided on the inner wall of the relief chamber 13, and a groove 211 is provided on the outer wall of the core head 21, and the sealing ring 18 cooperates with the groove 211; the sealing ring 18 includes several groups, and several groups of the sealing rings 18 are respectively arranged between the connecting parts of several groups of relief valves and the valve body 1.
[0020] Description of the working method of this utility model:
[0021] The relief valve adopting this structure divides the inner cavity of the valve body 1 into an air inlet cavity 12 and a relief cavity 13 by a limit stopper 11. The air inlet cavity 12 is connected to the air inlet pipe 14 and the air outlet pipe 15 for normal valve circulation, while the relief cavity 13 is connected to the opening of the valve body 1, and a fastening plate 16 is provided at the opening of the valve body 1. A plurality of relief pipes 17 are connected to the relief cavity 13 and the fastening plate 16 respectively. Therefore, when the valve cover 3 is closed on the fastening plate 16, the relief cavity 13 forms a relatively closed space, and only the air inlet cavity 12, the relief cavity 13 and the relief pipe 17 are connected in sequence. In order to realize step-by-step To relieve pressure, a core head 21 is provided in the relief chamber 13, one end face of the core head 21 can be abutted against the limit baffle 11, and the other end face of the core head 21 can be abutted against the valve cover 3 through a spring 22. Therefore, under the elastic force of the spring 22, the core head 21 will remain abutted against the limit baffle 11 to ensure the closure of the relief pipe 17. When the gas pressure entering the inlet pipe 14 exceeds the pressure that the outlet pipe 15 can withstand, the excess pressure will act on the core head 21 and keep the core head 21 continuously compressed until the spring 22 is deformed and compressed, and the core head 21 will move toward the direction of the valve cover 3 until the first relief pipe 17 is closed. 17 is exposed, and the air pressure is released into the release pipe 17. Since the connection points between the plurality of release pipes 17 and the valve body 1 are distributed step by step in the direction from the limit baffle 11 to the fastening plate 16, when the air pressure continues to rise, the first release pipe 17 cannot meet the pressure relief demand, and the pressure will continue to be pressed on the core head 21 until the second and third release pipes 17 are exposed, and the pressure is released step by step. Moreover, the plurality of release pipes 17 are parallel to the central axis of the valve body 1 and are distributed step by step outward in sequence. The connection points on the fastening plate 16 are in a fan-shaped structure that expands outward step by step on the fastening plate 16. Moreover, the plurality of release pipes 17 and the fastening plate 16 are connected to the fastening plate 16 in a fan-shaped structure that expands outward step by step. The connecting parts of the fixing plate 16 are all connected to the air duct 31, so each level of pressure relief will be concentrated from the air duct 31. Because the release pipe 17 that has not been crossed by the core head 21 and exposed is in a relatively stable closed space with the release chamber 13, the previous level of release pipe 17 will not flow back from the vent pipe to the release chamber 13 when the pressure is released, and can only be released from the vent pipe with a smaller air pressure. A one-way valve can be set on the air duct 31 and connected to the air storage tank to collect the excess pressure-released gas for subsequent reuse. The fan-shaped structure can increase the pressure relief area, which is better than pressure relief in the form of pipelines alone.
[0022] In order to maintain a better sealing effect, a plurality of sealing rings 18 are arranged on the inner wall of the relief chamber 13, and the plurality of sealing rings 18 are arranged between the connecting parts of the plurality of relief valves and the valve body 1. At the same time, a groove 211 is arranged on the outer wall of the core head 21, and the groove 211 is used to cooperate with the sealing ring 18, so that the pressure to be withstood can be calculated more conveniently, and the obstruction of the sealing ring 18 during the pressure relief process can achieve a better sealing effect.
[0023] The beneficial effect of the utility model is that the air inlet chamber 12 and the discharge chamber 13 are separated, and the air inlet chamber 12 plays a basic valve ventilation effect, while the core head 21 in the discharge chamber 13 is closed by the compression force of the spring 22. When the air pressure in the air inlet chamber 12 is too high, the air pressure will push the core head 21 to compress and expose the discharge pipe 17. The discharge pipes 17 distributed outward in stages play a step-by-step pressure relief effect. At the same time, the connection points between the plurality of discharge pipes 17 and the fastening plate 16 are arranged to be a fan-shaped structure that expands outward in stages, thereby increasing the pressure relief area and ensuring the stability of the pressure relief process.
[0024] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A relief valve, characterized in that: The vent core comprises a valve body, a discharge core and a valve cover, wherein the valve body is a cylindrical structure which is hollow inside and provided with an opening at one end, the valve body is provided with a limit baffle which divides the inner cavity into an air inlet cavity and a discharge cavity, the air inlet pipe and the air outlet pipe provided on the valve body are respectively connected to the air inlet cavity, a fastening plate is provided at the opening of the valve body, and the valve body is also provided with a discharge pipe which is respectively connected to the discharge cavity and the fastening plate; the discharge core comprises a core head and a spring, the outer side wall of the core head cooperates with the inner side wall of the discharge cavity, and one end of the spring abuts against the side surface of the core head; the valve cover is detachably connected to the fastening plate, the other end of the spring abuts against the valve cover, the valve cover is provided with an air guide pipe, and the air guide pipe is connected to the discharge group pipe.
2. The relief valve according to claim 1, characterized in that: The vent pipes include several groups, several groups of vent pipes are respectively parallel to the central axis of the valve body and are distributed outward in stages, several groups of connections between the vent pipes and the valve body are distributed in stages along the direction of the limit baffle toward the fastening plate, and several groups of connections between the vent pipes and the fastening plate are connected to the air guide pipe.
3. The relief valve according to claim 2, characterized in that: The connection of the plurality of emission pipes on the fastening plate is in a fan-shaped structure that expands outward step by step on the fastening plate.
4. The relief valve according to claim 2, characterized in that: A sealing ring is arranged on the inner side wall of the emission cavity, and a groove is arranged on the outer side wall of the core head, and the sealing ring cooperates with the groove.
5. The relief valve according to claim 4, characterized in that: The sealing rings include several groups, and the several groups of sealing rings are respectively arranged between the communicating parts of the several groups of relief valves and the valve body.