CN219102124U - Pressure relief valve group - Google Patents

Abstract

The utility model discloses a pressure relief valve group, which belongs to the technical field of valves and comprises a first valve, wherein a valve cavity is arranged in the first valve in a hollow mode, a rotatable valve core assembly is arranged in the valve cavity, an inlet and an outlet are arranged at the left end and the right end of the valve cavity, the inlet can be sealed when the valve core assembly rotates, a connecting port communicated with the valve cavity is arranged at the upper end of the first valve, a second valve is arranged above the connecting port, and the upper end of the second valve is connected with the pressure relief valve. The pressure relief valve group provided by the utility model can realize the pressure relief function while realizing the on-off of equipment or pipelines, realize the integral disassembly and assembly, has higher installation efficiency and is convenient for maintenance and replacement.

Description

Pressure relief valve group

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a pressure relief valve bank.

Background

When the existing valve is applied to a pipeline, the valve generally only plays a role in switching on and off equipment or the pipeline, and the pressure relief valve is automatically opened to relieve pressure when the pressure in the equipment or the pipeline exceeds the set pressure of the pressure relief valve, so that the medium in the equipment and the pipeline is ensured to be under the set pressure, the pipeline and the equipment are protected, the valves are independently acted, the integration is not carried out, the installation efficiency is low, meanwhile, the equipment is required to be independently disassembled and assembled in the replacement and maintenance processes, the operation is more troublesome, the whole disassembly and assembly cannot be carried out, and the maintenance efficiency is low.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a pressure relief valve group, which aims to solve the problems that a valve between devices or pipelines in the prior art is not integrated and cannot be integrally disassembled.

In order to achieve the above purpose, the utility model provides a pressure relief valve group, which comprises a first valve, wherein a valve cavity is arranged in the first valve in a hollow manner, a rotatable valve core assembly is arranged in the valve cavity, an inlet and an outlet are arranged at the left end and the right end of the valve cavity, the inlet can be sealed when the valve core assembly rotates, a connecting port communicated with the valve cavity is arranged at the upper end of the first valve, a second valve is arranged above the connecting port, and the upper end of the second valve is connected with the pressure relief valve.

Still further, the second valve is the gate valve and is in the normally open state, the relief valve including with the relief valve body that the second valve is connected, be equipped with the relief valve pocket in the relief valve body, be equipped with relief valve seat and pressure release export in the relief valve pocket, the coaxial piston cylinder that is equipped with in the relief valve seat top, coaxial elastic valve core subassembly that is equipped with in the piston cylinder, but intercommunication or separation when elastic valve core subassembly stretches out and draws back the relief valve seat with the pressure release export.

Still further, first valve is eccentric hemisphere valve, and it is including the valve main part, valve main part top is equipped with the valve gap, the connector is located on the valve gap, the import department is equipped with the elasticity disk seat.

Still further, the elastic valve seat comprises a valve seat main body, first sealing elements for sealing the inlet are uniformly distributed on the side wall of the valve seat main body, and a compression spring is arranged between the valve seat main body and the side wall of the valve main body.

Still further, the elastic valve core subassembly is including with the piston of the coaxial setting of piston cylinder, the piston lower extreme is equipped with and is used for sealing the sealing washer of pressure release disk seat, the sealing washer passes through the clamp plate to be fixed the piston tip, still be equipped with the spring in the piston, spring one end supports to be established the pressure release valve body inner wall, the other end supports to be established on the piston, the spring has the drive the piston is sealed the motion trend of pressure release disk seat.

Further, a connecting pipeline is arranged between the connecting port and the second valve.

Still further, the case subassembly is including the valve rod, be equipped with rotatable case on the valve rod, be equipped with annular apron and second sealing member on the case, be equipped with first draw-in groove on the case, be equipped with the second draw-in groove on the annular apron, first draw-in groove with the cooperation of second draw-in groove forms and is used for installing the spacing groove of sealing member.

Furthermore, the pressure gauge and the regulating valve are also arranged on the pressure relief valve.

Compared with the prior art, the technical scheme of the utility model has the advantages that as the first valve, the second valve and the pressure relief valve are arranged, the valves are integrated, the pressure relief function can be realized while equipment or pipelines are opened and closed, the whole disassembly and assembly are realized, the installation efficiency is higher, and the maintenance and the replacement are convenient; meanwhile, the first valve adopts an eccentric half ball valve and is provided with an elastic valve seat, and the valve core assembly and the elastic valve seat can be always kept sealed in the sealing process, so that the sealing effect is good; in addition, the pressure relief valve is installed in the second valve top, when overhauling the pressure relief valve, closes the second valve and can overhauls the pressure relief valve, need not to cut off the flow with the pipeline, and it is convenient to maintain.

Drawings

FIG. 1 is a schematic diagram of a pressure relief valve set according to the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural diagram of a pressure relief valve of the pressure relief valve set provided by the utility model;

the corresponding structure of each numerical mark in the attached drawings is as follows: 1-first valve, 11-valve cavity, 12-valve core assembly, 121-valve stem, 122-valve core, 1221-first clamping groove, 123-annular cover plate, 124-second sealing element, 1231-second clamping groove, 13-inlet, 14-outlet, 15-connecting port, 16-valve body, 17-valve cover, 18-elastic valve seat, 181-valve seat body, 182-first sealing element, 183-compression spring, 19-limit groove, 2-second valve, 3-valve, 31-pressure relief valve body, 32-pressure relief valve cavity, 33-pressure relief valve seat, 34-pressure relief outlet, 35-piston cylinder, 36-elastic valve core assembly, 361-piston, 362-sealing ring, 363-pressing plate, 364-spring, 37-pressure gauge, 38-regulating valve, 4-connecting pipe.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 3, the utility model provides a pressure relief valve group, which can realize on-off of equipment or pipelines and can simultaneously perform pipeline pressure relief, and the pressure relief valve group is generally arranged at an inlet of the pipelines, and specifically comprises a first valve 1, a valve cavity 11 is arranged in the first valve 1, a rotatable valve core assembly 12 is arranged in the valve cavity 11, an inlet 13 and an outlet 14 are arranged at left and right ends of the valve cavity 11, a medium flows in and out from the outlet 14 through the inlet 13, the inlet 13 can be sealed when the valve core assembly 12 rotates, the on-off of the pipelines is realized, a connecting port 15 communicated with the valve cavity 11 is arranged at the upper end of the first valve 1, a second valve 2 is arranged above the connecting port 15, and the upper end of the second valve 2 is connected with a pressure relief valve 3.

The connection port 15 is communicated with the second valve 2 through a connection pipeline 4, the second valve 2 is a gate valve and is in a normally open state, the pressure relief valve 3 is connected to the second valve 2 to realize pressure relief, specifically, the pressure relief valve 3 comprises a pressure relief valve body 31 connected with the second valve 2, a pressure relief valve cavity 32 is arranged in the pressure relief valve body 31, a pressure relief valve seat 33 and a pressure relief outlet 34 are arranged in the pressure relief valve cavity 32, a piston cylinder 35 is coaxially arranged above the pressure relief valve seat 33, an elastic valve core assembly 36 is coaxially arranged in the piston cylinder 35, the pressure relief valve seat 33 and the pressure relief outlet 34 can be communicated or cut off when the elastic valve core assembly 36 stretches, and when the pipeline is in a normal pressure state, the elastic valve core assembly 36 stretches to cut off the pressure relief valve seat 33 and the pressure relief outlet 34; when the pipeline is in an overpressure state, the elastic valve core assembly 36 is compressed under the action of medium pressure, the pressure relief valve seat 33 is communicated with the pressure relief outlet 34, and the pipeline is depressurized; further, the elastic valve core assembly 36 includes a piston 361 coaxially disposed with the piston cylinder 35, a sealing ring 362 for sealing the pressure relief valve seat 33 is disposed at the lower end of the piston 361, the sealing ring 362 is fixed at the end of the piston 361 by a pressing plate 363, a spring 364 is further disposed in the piston 361, one end of the spring 364 is abutted against the inner wall of the pressure relief valve body 31, the other end is abutted against the piston 361, and the spring 364 has a movement tendency for driving the piston 361 to seal the pressure relief valve seat 33; meanwhile, as can be seen from fig. 3, a first limiting boss is disposed on the inner wall of the pressure relief valve body 31 and is mounted and positioned at one end of the spring 364, and a second limiting boss is disposed on the inner wall of the piston 361 and is mounted and positioned at the other end of the spring 364. In order to facilitate the observation of the internal pressure of the pressure relief valve 3 and adjust the pipeline pressure, the pressure gauge 37 and the regulating valve 38 are also arranged on the pressure relief valve 3.

In order to facilitate cleaning and maintenance of the valve group, the first valve is an eccentric half ball valve, the first valve 1 comprises a valve main body 16, a valve cover 17 is arranged above the valve main body 16, a sealing connecting piece is arranged between the valve main body 16 and the valve cover 17 and is fixedly connected by adopting a screw, and a connecting port 15 is positioned on the valve cover 17; in order to further improve the sealing effect between the valve core assembly 12 and the inlet 13, an elastic valve seat 18 is arranged at the inlet 13; the elastic valve seat 18 comprises a valve seat main body 181, first sealing elements 182 for sealing the inlet 13 are uniformly distributed on the side wall of the valve seat main body 181, wherein the first sealing elements 182 are generally made of sealing materials such as rubber or silica gel, and a compression spring 183 is arranged between the valve seat main body 181 and the side wall of the valve main body 16; meanwhile, the valve core assembly 12 includes a valve rod 121, a rotatable valve core 122 is disposed on the valve rod 121, an annular cover plate 123 and a second sealing member 124 are disposed on the valve core 122, wherein the second sealing member 124 is generally made of sealing materials such as rubber or silica gel, a first clamping groove 1221 is disposed on the valve core 122, a second clamping groove 1231 is disposed on the annular cover plate 123, and the first clamping groove 1221 and the second clamping groove 1231 cooperate to form a limiting groove for installing the sealing member 124. When the sealing is realized, the second sealing piece 124 is always in a pressing state with the side wall of the valve seat main body 181 due to the compression spring 183, so that the sealing effect is good; in order to limit the axial movement of the valve seat main body 181 during elastic sealing, a limiting groove 19 is formed in the inner wall of the valve cavity 11, limiting pins are radially arranged on the outer wall of the valve seat main body 181, and the limiting pins are clamped in the limiting groove 19 to realize limiting.

When the pressure relief valve bank is used, the first valve 1 is connected with the pipeline inlet to realize the on-off of a pipeline, the second valve 2 is in a normally open state and is communicated with the pressure relief valve 3, pressure parameters are set, automatic pressure relief can be realized when a pressure relief value is reached, and the valves can be integrally disassembled and assembled, so that the pressure relief valve bank is convenient to install.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (8)

1. A pressure relief valve group, its characterized in that: including first valve (1), the inside cavity of first valve (1) is equipped with valve pocket (11), be equipped with rotatable case subassembly (12) in valve pocket (11), both ends are equipped with import (13) and export (14) about valve pocket (11), can seal when case subassembly (12) rotate import (13), first valve (1) upper end be equipped with connector (15) of valve pocket (11) intercommunication, connector (15) top is equipped with second valve (2), second valve (2) upper end is connected with relief valve (3).

2. The pressure relief valve set of claim 1, wherein: the second valve (2) is a gate valve and is in a normally open state, the pressure relief valve (3) comprises a pressure relief valve body (31) connected with the second valve (2), a pressure relief valve cavity (32) is arranged in the pressure relief valve body (31), a pressure relief valve seat (33) and a pressure relief outlet (34) are arranged in the pressure relief valve cavity (32), a piston cylinder (35) is coaxially arranged above the pressure relief valve seat (33), an elastic valve core assembly (36) is coaxially arranged in the piston cylinder (35), and the elastic valve core assembly (36) can be communicated or separated when being stretched.

3. The pressure relief valve set of claim 1, wherein: the first valve (1) is an eccentric half ball valve and comprises a valve main body (16), a valve cover (17) is arranged above the valve main body (16), the connecting port (15) is positioned on the valve cover (17), and an elastic valve seat (18) is arranged at the inlet (13).

4. A pressure relief valve set as claimed in claim 3, wherein: the elastic valve seat (18) comprises a valve seat main body (181), first sealing elements (182) for sealing the inlet (13) are uniformly distributed on the side wall of the valve seat main body (181), and a compression spring (183) is arranged between the valve seat main body (181) and the side wall of the valve main body (16).

5. The pressure relief valve set of claim 2, wherein: the elastic valve core assembly (36) comprises a piston (361) coaxially arranged with the piston cylinder (35), a sealing ring (362) for sealing the pressure relief valve seat (33) is arranged at the lower end of the piston (361), the sealing ring (362) is fixed at the end part of the piston (361) through a pressing plate (363), a spring (364) is further arranged in the piston (361), one end of the spring (364) is propped against the inner wall of the pressure relief valve body (31), the other end of the spring is propped against the piston (361), and the spring (364) has a movement trend for driving the piston (361) to seal the pressure relief valve seat (33).

6. The pressure relief valve set of claim 1, wherein: a connecting pipeline (4) is arranged between the connecting port (15) and the second valve (2).

7. The pressure relief valve set of claim 1, wherein: the valve core assembly (12) comprises a valve rod (121), a rotatable valve core (122) is arranged on the valve rod (121), an annular cover plate (123) and a second sealing element (124) are arranged on the valve core (122), a first clamping groove (1221) is formed in the valve core (122), a second clamping groove (1231) is formed in the annular cover plate (123), and the first clamping groove (1221) and the second clamping groove (1231) are matched to form a limiting groove for installing the sealing element (124).

8. The pressure relief valve set of claim 2, wherein: the pressure relief valve (3) is also provided with a pressure gauge and a regulating valve.

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