CN112128432A

CN112128432A - Pressure relief electromagnetic valve for toxic gas pipeline

Info

Publication number: CN112128432A
Application number: CN202011143410.3A
Authority: CN
Inventors: 范利波
Original assignee: Chongqing Panheng Valve Co ltd
Current assignee: Chongqing Panheng Valve Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2020-12-25
Anticipated expiration: 2040-10-23
Also published as: CN112128432B

Abstract

The invention discloses a pressure relief electromagnetic valve for a toxic gas pipeline, which comprises a valve seat, a first cavity, a first channel, a second cavity, an electromagnetic valve, a piston, a limiting mechanism and an adjusting rod, wherein the pressure relief electromagnetic valve can be used for relieving pressure by opening and closing a valve core, and when the pressure is increased, the electromagnetic valve can be opened to enable the adjusting rod to move, so that the pressure of the first cavity is changed, and the pressure relief is finished; the switch valve core is a one-way valve, and can prevent gas from flowing back; the piston is in sealing fit with the second chamber, so that gas leakage and corrosion of the pressure relief mechanism can be prevented. The invention has the advantages of reasonable design, simple structure, convenient operation and the like.

Description

Pressure relief electromagnetic valve for toxic gas pipeline

Technical Field

The invention relates to the field of electromagnetic valves, in particular to a pressure relief electromagnetic valve for a toxic gas pipeline.

Background

The electromagnetic valve is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. Used in industrial control systems to regulate the direction, flow, velocity and other parameters of a medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. However, the electromagnetic valve usually has only two states of opening and closing, and the valve core can only be located at two extreme positions and cannot be continuously adjusted, so that the adjustment precision is limited to a certain extent. In addition, in the case of unstable fluid pressure, the solenoid valve cannot be controlled appropriately, which impairs the service life of the pipeline.

A patent entitled "a dual-use angle valve" is disclosed in CN 211624383U, and is provided with a water inlet joint, a water outlet joint and a pressure relief cavity, and has the disadvantages that: 1. the pressure relief mechanism in the pressure relief cavity is of a mechanical structure and cannot be adjusted according to the pressure in the pipeline; 2. the fluid can corrode the pressure relief mechanism.

Those skilled in the art have therefore endeavored to develop a pressure relief solenoid valve for toxic gas lines.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a pressure relief solenoid valve for a toxic gas pipeline, which can adjust the magnitude of fluid pressure by controlling the position of a movable iron core.

The invention aims to realize the technical scheme that the pressure relief electromagnetic valve for the toxic gas pipeline comprises a valve seat, a first adjusting screw, a switch valve core, a pressure relief mechanism, a movable iron core, a piston and a pressure gauge;

a first cavity is arranged in the valve seat, a first channel and a second channel are further arranged on the valve seat, one end of the first channel is communicated with the first cavity, the other end of the first channel is communicated with the main toxic gas pipeline, one end of the second channel is communicated with the first cavity, the other end of the second channel is communicated with the main toxic gas pipeline through a buffer pipeline, a circular table is arranged in the first cavity, the circular table is located between the joint of the first channel and the first cavity and the joint of the second channel and the first cavity, and through holes are formed in the circular table;

the valve seat is provided with a first adjusting screw rod, the first adjusting screw rod is in threaded connection with the valve seat, one end of the first adjusting screw rod penetrates out of the valve seat connecting hand wheel, the other end of the first adjusting screw rod stretches into the first cavity to be connected with one side of the first limiting block, the first limiting block is in slidable connection with the first cavity, the other side of the first limiting block is further connected with a first adjusting spring, the other side of the first adjusting spring is connected with a switch valve core, the switch valve core is in sealing fit with the through hole, and one side, opposite to the first adjusting screw rod, of the valve seat is further provided with a pressure relief mechanism communicated.

Preferably, the pressure relief mechanism comprises a hollow closed container, a pressure regulating sleeve, a second regulating screw, a second limiting block, a second regulating spring, a regulating rod, a piston and a limiting mechanism;

the cavity is airtight to accept the body coupling on the disk seat, and the cavity is airtight to hold internal second cavity, and second cavity and first cavity intercommunication, pressure regulating sleeve install on the airtight body of accepting of cavity, and is parallel with first cavity axis, adjust pole one end slidable and set up in pressure regulating sleeve, in the other end stretches into the second cavity, with piston connection, piston and second cavity sliding connection, second adjusting spring sets up in pressure regulating sleeve, and second adjusting spring one end is connected with adjusting the pole, and the other end is connected with second stopper one end, and the second stopper other end is connected with second adjusting screw, and second adjusting screw and pressure regulating sleeve threaded connection still are provided with stop gear between adjusting pole and the cavity airtight body.

Preferably, the limiting mechanism comprises an electromagnetic valve, an electromagnetic valve movable iron core and a limiting hole;

the solenoid valve is installed on the airtight body of acceping of cavity, and the solenoid valve moves the iron core and passes the airtight body of acceping of cavity and be connected with can with spacing hole complex spacing head, spacing hole equidistance is arranged on adjusting the pole.

Preferably, the diameter of the limiting head is smaller than that of the limiting hole.

Preferably, a sealing ring is arranged on the through hole.

Preferably, the solenoid valve is mounted on the valve seat by a screw thread.

Preferably, a pressure gauge is arranged at the joint of the first chamber and the first channel.

The invention has the beneficial effects that:

1. pressure relief can be accomplished through the switch case, can open the solenoid valve when pressure increases and make the regulation pole remove to change first cavity pressure, accomplish the pressure relief. The adjusting rod is also provided with a plurality of limiting holes, so that the multi-stage control of pressure can be realized, and the pressure in the pipeline is stabilized;

2. the switch valve core is a one-way valve which can prevent gas from flowing back;

3. the piston is in sealing fit with the second chamber, so that gas leakage and corrosion of the pressure relief mechanism can be prevented.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.

Drawings

The drawings of the present invention are described below.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic structural view of the adjusting lever of the present invention.

In the figure: 1. a first chamber; 2. a first channel; 3. a second channel; 4. a first adjusting screw; 41. a hand wheel; 42. a first stopper; 5. a first regulating spring; 6. a switch valve core; 7. a seal ring; 8. a through hole; 9. a pressure gauge; 10. a hollow sealed container; 101. a second chamber; 11. an electromagnetic valve; 111. a movable iron core; 112. a limiting head; 12. a pressure regulating sleeve; 121. a second adjusting screw; 122. a second limiting block; 123. a second regulating spring; 124. adjusting a rod; 1241. a limiting hole; 125. a piston; 13. a valve seat.

Detailed Description

The invention is further illustrated by the following figures and examples.

As shown in fig. 1, the invention provides a pressure relief solenoid valve for a toxic gas pipeline, which is characterized in that the pressure relief solenoid valve for the toxic gas pipeline comprises a valve seat 13, a first adjusting screw 4, a switch valve core 6, a pressure relief mechanism, a movable iron core 11, a piston 15 and a pressure gauge 9;

a first cavity 1 is arranged in the valve seat 13, a first channel 2 and a second channel 3 are further arranged on the valve seat 13, one end of the first channel 2 is communicated with the first cavity 1, the other end of the first channel is communicated with a main toxic gas pipeline, one end of the second channel 3 is communicated with the first cavity 1, the other end of the second channel is communicated with the main toxic gas pipeline through a buffer pipeline, a circular truncated cone is arranged in the first cavity, the circular truncated cone is positioned between the joint of the first channel 2 and the first cavity 1 and the joint of the second channel 3 and the first cavity 1, and a through hole 8 is formed in the circular truncated cone;

the improved valve is characterized in that a first adjusting screw rod 4 is arranged on the valve seat 13, the first adjusting screw rod 4 is in threaded connection with the valve seat 13, one end of the first adjusting screw rod 4 penetrates out of the valve seat connecting hand wheel 41, the other end of the first adjusting screw rod extends into one side of the first cavity 1 connected with the first limiting block 42, the first limiting block 42 is in slidable connection with the first cavity 1, the other side of the first limiting block 42 is further connected with a first adjusting spring 5, the other side of the first adjusting spring 5 is connected with a switch valve core 6, the switch valve core 6 is in sealing fit with the through hole 8, and a pressure relief mechanism communicated with the first cavity is further arranged on one side, opposite to the first adjusting.

In this embodiment, gaseous first cavity of flowing in through first passageway, when exceeding the pipeline and predetermineeing the pressure value, the switch case is opened, accomplishes the pressure release, and when the pipeline pressure value continued the increase, the solenoid valve was opened, and the piston removes, changes the pipeline internal pressure through pressure relief mechanism, accomplishes the pressure release.

As shown in fig. 2, the pressure relief mechanism includes a hollow sealed container 10, a pressure regulating sleeve 12, a second adjusting screw 121, a second limiting block 122, a second adjusting spring 123, an adjusting rod 124, a piston 125, and a limiting mechanism;

the airtight body 10 of acceping of cavity is connected on disk seat 13, is second cavity 101 in the airtight body 10 of acceping of cavity, second cavity 101 and first cavity 1 intercommunication, and pressure regulating sleeve 12 is installed on the airtight body 10 of acceping of cavity, and is parallel with 1 axis of first cavity, adjust the setting of pole 124 one end slidable in pressure regulating sleeve 12, the other end stretches into in the second cavity 101, is connected with piston 125, piston 125 and second cavity 101 sliding connection, second regulating spring 123 sets up in pressure regulating sleeve 12, and second regulating spring 123 one end is connected with adjusting pole 124, and the other end is connected with second stopper 122 one end, and the second stopper 122 other end is connected with second adjusting screw 121, and second adjusting screw 121 and pressure regulating sleeve 12 threaded connection still are provided with stop gear between adjusting pole 124 and the airtight body 10 of acceping of cavity.

In this embodiment, when the pressure relief mechanism is in the non-operating state, the piston is located at the joint of the second chamber and the first chamber, and the piston can seal and isolate the first chamber and the adjusting sleeve, thereby preventing gas leakage and corrosion.

As shown in fig. 3, the limiting mechanism 9 includes an electromagnetic valve 11, an electromagnetic valve plunger 111, and a limiting hole 1241;

the electromagnetic valve 11 is installed on the hollow airtight container 10, the movable iron core 111 of the electromagnetic valve penetrates through the hollow airtight container 14 to be connected with the limiting head 112 capable of being matched with the limiting holes 1241, and the limiting holes 1241 are arranged on the adjusting rod 124 at equal intervals.

In this embodiment, the position of the adjusting rod can be adjusted through the limiting head by the movable iron core of the electromagnetic valve, so that the pressure of the second chamber is changed, and multi-stage control is realized.

The diameter of the limiting head 112 is smaller than that of the limiting hole 1241.

In this embodiment, the position limiting head can be inserted into the position limiting hole to fix the position of the adjusting rod

And a sealing ring 7 is arranged on the through hole 8.

In this embodiment, the sealing washer makes the sealed effect of switch valve department better.

The solenoid valve 10 is mounted on a valve seat 13 by means of a screw thread.

In this embodiment, the solenoid valve passes through the screw thread and installs on the disk seat, convenient and fast more.

And a pressure gauge 9 is arranged at the joint of the first chamber 1 and the first channel 2.

In this embodiment, the pressure gauge is used to monitor the pressure inside the pipe.

The working principle of the invention is as follows: poisonous gas gets into the valve body through first passageway, when gas pressure reaches first regulating spring's the pressure value of predetermineeing, the switch case is opened, accomplish the pressure release, continue to increase as gas pressure, when reaching second regulating spring's the pressure value of predetermineeing, the gear of regulation pole is adjusted in the control solenoid valve, the piston moves to the right, reduce the pressure size of first cavity, after the pressure size of first cavity is stable, the piston resets, the gear that suits can both be made to the pressure variation solenoid valve in the pipeline at every turn is adjusted, can effectively get rid of the intraductal pressure peak value.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. A pressure relief electromagnetic valve for a toxic gas pipeline is characterized by comprising a valve seat (13), a first adjusting screw rod (4), a switch valve core (6), a pressure relief mechanism, a movable iron core (11) and a piston (15);

a first cavity (1) is arranged in the valve seat (13), a first channel (2) and a second channel (3) are further arranged on the valve seat (13), one end of the first channel (2) is communicated with the first cavity (1), the other end of the first channel is communicated with a toxic gas main pipeline, one end of the second channel (3) is communicated with the first cavity (1), the other end of the second channel is communicated with the toxic gas main pipeline through a buffer pipeline, a circular table is arranged in the first cavity, the circular table is located between the joint of the first channel (2) and the first cavity (1) and the joint of the second channel (3) and the first cavity (1), and a through hole (8) is formed in the circular table;

the improved valve is characterized in that a first adjusting screw (4) is arranged on the valve seat (13), the first adjusting screw (4) is in threaded connection with the valve seat (13), one end of the first adjusting screw (4) penetrates out of the valve seat connecting hand wheel (41), the other end of the first adjusting screw extends into the first cavity (1) to be connected with one side of a first limiting block (42), the first limiting block (42) is in slidable connection with the first cavity (1), the other side of the first limiting block (42) is further connected with a first adjusting spring (5), the other side of the first adjusting spring (5) is connected with a switch valve core (6), the switch valve core (6) is in sealing fit with the through hole (8), and a pressure relief mechanism communicated with the first cavity is further arranged on one side, opposite to the first adjusting screw (4), of the valve seat (13.

2. The pressure relief electromagnetic valve for toxic gas pipelines according to claim 1, wherein the pressure relief mechanism comprises a hollow closed container (10), a pressure regulating sleeve (12), a second regulating screw (121), a second limiting block (122), a second regulating spring (123), a regulating rod (124), a piston (125) and a limiting mechanism;

the hollow airtight container body (10) is connected to the valve seat (13), a second cavity (101) is arranged in the hollow airtight container body (10), the second cavity (101) is communicated with the first cavity (1), the pressure regulating sleeve (12) is installed on the hollow airtight container body (10) and is parallel to the central axis of the first cavity (1), one end of the regulating rod (124) is slidably arranged in the pressure regulating sleeve (12), the other end of the regulating rod extends into the second cavity (101) and is connected with the piston (125), the piston (125) is slidably connected with the second cavity (101), the second regulating spring (123) is arranged in the pressure regulating sleeve (12), one end of the second pressure regulating spring (123) is connected with the regulating rod (124), the other end of the second regulating spring is connected with one end of the second limiting block (122), the other end of the second limiting block (122) is connected with the second regulating screw rod (121), and the second regulating screw rod (121) is in threaded connection with the pressure regulating sleeve (12), a limiting mechanism is also arranged between the adjusting rod (124) and the hollow closed container (10).

3. The pressure relief solenoid valve for toxic gas pipelines according to claim 2, wherein the limiting mechanism (9) comprises a solenoid valve (11), a solenoid valve plunger (111), a limiting hole (1241);

the electromagnetic valve (11) is installed on the hollow airtight container (10), the movable iron core (111) of the electromagnetic valve penetrates through the hollow airtight container (14) to be connected with a limiting head (112) capable of being matched with a limiting hole (1241), and the limiting holes (1241) are arranged on the adjusting rod (124) at equal intervals.

4. The toxic gas preventing pressure relief solenoid valve as claimed in claim 3, wherein the diameter of the stopper head (112) is smaller than the diameter of the stopper hole (1241).

5. The anti-toxic gas pressure relief solenoid valve according to claim 1, wherein the through hole (8) is provided with a sealing ring (7).

6. The toxic gas preventive pressure relief solenoid valve as claimed in claim 1, wherein said solenoid valve (11) is screw-mounted on a valve seat (13).

7. The anti-toxic gas pressure relief solenoid valve according to claim 1, wherein a pressure gauge (9) is provided at the junction of the first chamber (1) and the first channel (2).