CN217713859U

CN217713859U - Gas self-closing valve

Info

Publication number: CN217713859U
Application number: CN202220988113.7U
Authority: CN
Inventors: 马斌
Original assignee: Shaanxi Datang Gas Safety Technology Co ltd
Current assignee: Shaanxi Datang Gas Safety Technology Co ltd
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-11-01
Anticipated expiration: 2032-04-24

Abstract

The utility model discloses a gas self-closing valve, including the valve body, still include: the moving assembly is arranged at the air inlet of the valve body in a sliding manner; the first magnetic assembly is arranged in the valve body in a sliding mode, and the side wall of the first magnetic assembly is clamped with the end part of the moving assembly and used for driving the moving assembly to open or close the air inlet of the valve body; the second magnetic component is positioned in the valve body, can move relative to the valve body and is magnetically attracted with the first magnetic component; the micro-leakage sensor is arranged on the valve body; the signal input end of the control component is connected with the micro-leakage sensor, and the control end of the control component is connected with the second magnetic component; when the micro-leakage sensor detects that the gas of the valve body leaks slightly, the control assembly is used for controlling the second magnetic assembly to move to the first position in the valve body, and the first magnetic assembly drives the moving assembly to move under the action of magnetic attraction so as to seal the gas inlet of the valve body. The gas self-closing valve that this scheme provided possesses unusual small flow detection, and the control assembly closes the valve automatically and mechanical locking, has improved the security performance of self-closing valve.

Description

Gas self-closing valve

Technical Field

The utility model belongs to the technical field of the self-closing valve, concretely relates to gas self-closing valve.

Background

The gas self-closing valve is usually installed on an indoor gas pipeline and has the functions of automatically closing gas overpressure, automatically closing gas underpressure, automatically closing gas overflow and the like.

When gas leaks, the self-closing valve is controlled to be automatically closed through the overflowing assembly arranged in the self-closing valve, and therefore gas using safety is guaranteed. The existing overflowing assembly is structurally characterized in that a valve body of the self-closing valve is divided into a pressure regulating cavity and a valve cavity by a membrane and other assemblies, a gas pressure difference value exists between the pressure regulating cavity and the valve cavity through the change of gas pressure in the valve cavity, the overflowing assembly can move back and forth under the action of the gas pressure difference value, and when the valve cavity loses pressure, the overflowing assembly can seal the valve cavity of the self-closing valve, so that the function of closing the gas self-closing valve is realized.

However, when a trace amount of fuel gas leaks, the valve cavity of the existing overflowing assembly cannot lose pressure, and at the moment, the overflowing assembly does not close the self-closing valve, so that the tiny fuel gas leakage cannot be found in time, and further corresponding measures cannot be taken effectively and timely, and property loss or safety accidents are easily caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gas self-closing valve for among the solution prior art, the current subassembly that overflows, when the trace gas that appears is revealed, the valve pocket can not the decompression, and at this moment, it does not close the self-closing valve to overflow the subassembly, leads to small gas to leak and can't in time be discover, and then the unable effective timely corresponding measure of taking, easily causes the technical problem of loss of property or incident.

In order to solve the technical problem, the embodiment of the utility model discloses gas self-closing valve, including valve body 1, still include:

the moving assembly is arranged at the air inlet of the valve body in a sliding manner;

the first magnetic assembly is arranged in the valve body in a sliding mode, the side wall of the first magnetic assembly is clamped with the end part of the moving assembly, and the first magnetic assembly is used for driving the moving assembly to open or close the air inlet of the valve body;

the second magnetic component is positioned in the valve body, can move relative to the valve body and is magnetically attracted with the first magnetic component;

the micro-leakage sensor is arranged on the valve body;

the signal input end of the control component is connected with the micro-leakage sensor, and the control end of the control component is connected with the second magnetic component;

when the micro-leakage sensor detects that the valve body has gas micro-leakage, the control assembly is used for controlling the second magnetic assembly to move to the first position in the valve body, and the first magnetic assembly drives the moving assembly to move under the action of magnetic attraction so as to seal the air inlet of the valve body.

Optionally, when the moving assembly opens the air inlet of the valve body, the control assembly controls the second magnetic assembly to be kept at a second position in the valve body, and the first position and the second position are two different positions in the valve body.

Optionally, the control assembly includes:

the control component is positioned in the valve body, and the information input end of the control component is connected with the micro-leakage sensor;

the control component is connected with the action component in a control mode, and the action component is clamped with the second magnetic assembly;

when the action part is clamped with the second magnetic assembly, the action part limits the second magnetic assembly to be kept at a second position in the valve body, and when the action part is not clamped with the second magnetic assembly, the second magnetic assembly moves to the first position from the second position.

Optionally, the first magnetic component includes:

the limiting rod is arranged inside the valve body in a sliding manner; a trapezoidal groove is formed in the side wall of the valve body, and when the left end of the moving assembly is located on the bottom surface of the trapezoidal groove, the moving assembly opens the valve body; when the moving assembly is positioned on the side wall of the limiting rod and is not positioned in the trapezoidal groove, the overflowing assembly closes the valve body;

the limiting rod spring is sleeved on the outer side of the limiting rod, one end of the limiting rod spring is abutted with the side wall of the limiting rod, and the other end of the limiting rod spring is abutted with the valve body;

and the magnet is arranged on the limiting rod and is magnetically attracted with the second magnetic component.

Optionally, the second magnetic assembly includes:

the magnet locking seat is arranged in the valve body in a sliding mode, a limiting groove is formed in the side wall of the magnet locking seat, the action part can be clamped in the limiting groove, and when the action part is clamped in the limiting groove, the second magnetic component is kept at a second position in the valve body;

the magnet spring is sleeved on the side wall of the magnet locking seat, one end of the magnet spring is abutted against the valve body, and the other end of the magnet spring is abutted against the top of the magnet locking seat;

and the magnetic part is fixedly connected to the magnet locking seat and is magnetically attracted with the magnet.

Optionally, the moving assembly includes:

the overflow column is arranged in the air inlet channel of the valve body in a sliding mode, and one end of the overflow column abuts against the side wall of the limiting rod;

the overflowing sheet is fixedly connected to the side wall of the overflowing column, and the overflowing column penetrates through the overflowing sheet;

the overflowing spring is positioned in the air inlet channel, one end of the overflowing spring is connected with the valve body, and the other end of the overflowing spring is abutted against the overflowing sheet and used for driving the overflowing sheet to open the air inlet of the valve body;

when the end part of the overflowing column is positioned on the bottom surface of the trapezoid groove, the overflowing sheet opens the valve body; when the end part of the overflowing column is positioned on the side wall of the limiting rod and is not positioned in the trapezoidal groove, the overflowing sheet closes the valve body.

Optionally, the end of the flow post is shaped as a hemisphere.

Optionally, the method further includes: a manual unlocking assembly for moving the second magnetic assembly from the first position to the second position.

Optionally, the manual unlocking assembly includes: the reset knob, the reset rotating shaft, the cotter pin, the reset deflector rod and the reset elastic sheet; the reset knob is rotatably arranged on the valve body; the reset rotating shaft rotates along with the rotation of the reset knob; the reset deflector rod is arranged on the side wall of the reset rotating shaft and rotates along with the rotation of the reset rotating shaft, the reset deflector rod is used for pressing the second magnetic assembly so as to increase the distance between the first magnetic assembly and the second magnetic assembly, and the reset elastic sheet is arranged on the reset rotating shaft and used for resetting the reset knob.

Optionally, the reset deflector rod is fixed on the reset rotating shaft through a cotter pin.

The embodiment of the utility model discloses gas self-closing valve, including the valve body, still include: the moving assembly is arranged at the air inlet of the valve body in a sliding manner; the first magnetic assembly is arranged in the valve body in a sliding mode, the side wall of the first magnetic assembly is clamped with the end part of the moving assembly, and the first magnetic assembly is used for driving the moving assembly to open or close the air inlet of the valve body; the second magnetic component is positioned in the valve body, can move relative to the valve body and is magnetically attracted with the first magnetic component; the micro-leakage sensor is arranged on the valve body; the signal input end of the control component is connected with the micro-leakage sensor, and the control end of the control component is connected with the second magnetic component; when the micro-leakage sensor detects that the valve body has micro-leakage of fuel gas, the control assembly is used for controlling the second magnetic assembly to move to the first position in the valve body, and the first magnetic assembly drives the moving assembly to move under the action of magnetic attraction so as to seal the air inlet of the valve body. The gas self-closing valve provided by the scheme has the advantages that abnormal micro flow detection is realized, the control assembly automatically closes the valve, the valve is mechanically locked after being closed, and the safety performance of the gas self-closing valve is improved.

Drawings

Fig. 1 is a schematic structural diagram of a gas self-closing valve provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of another gas self-closing valve provided in the embodiment of the present application.

Fig. 3 is a schematic view of a connection structure of an overcurrent component and a limiting component provided in an embodiment of the present application.

Fig. 4 is a schematic view of another connection structure of an overcurrent assembly and a limiting assembly according to an embodiment of the present application.

Fig. 5 is an external structural schematic diagram of a manual unlocking assembly provided in an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a manual unlocking assembly provided in an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a reset spring according to an embodiment of the present application.

In the figure, 1, a valve body; 2. a magnet; 3. an operation member; 4. a push rod; 5. a magnet locking seat; 6. a magnet spring; 7. a magnetic member; 8. a limiting part; 9. a limiting plug; 10. a limiting rod; 11. a stopper rod spring; 12. a trapezoidal groove; 13. an overflow sheet; 14. an overcurrent spring; 15. a flow-through column; 16. a reset knob; 17. resetting the rotating shaft; 18. a cotter pin; 19. resetting the deflector rod; 20. resetting the elastic sheet; 21. a power source; 22. a loose joint; 23. a micro-leak sensor; 24. a housing; 25. an upper cover; 26. a control part; 27. and (7) a lower cover.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-7, fig. 1 is a schematic structural diagram of a gas self-closing valve provided in an embodiment of the present application. Fig. 2 is a schematic structural diagram of another gas self-closing valve provided in the embodiment of the present application. Fig. 3 is a schematic view of a connection structure of an overcurrent component and a limiting component provided in an embodiment of the present application. Fig. 4 is a schematic view of another connection structure of an overcurrent assembly and a limiting assembly according to an embodiment of the present application. Fig. 5 is an external structural schematic diagram of a manual unlocking assembly according to an embodiment of the present application. Fig. 6 is a schematic structural diagram of a manual unlocking assembly provided in an embodiment of the present application. Fig. 7 is a schematic structural diagram of a reset spring according to an embodiment of the present application.

Before introducing the technical scheme of the application, an application scenario of the application is introduced:

at present, when gas leaks, the self-closing valve is controlled to be automatically closed through an overflowing assembly arranged inside the self-closing valve, and then gas using safety is ensured. The existing overflowing assembly is structurally characterized in that a valve body of the self-closing valve is divided into a pressure regulating cavity and a valve cavity by a membrane and other assemblies, a gas pressure difference value exists between the pressure regulating cavity and the valve cavity through the change of gas pressure in the valve cavity, the overflowing assembly can move back and forth under the action of the gas pressure difference value, and when the valve cavity loses pressure, the overflowing assembly can seal the valve cavity of the self-closing valve, so that the function of closing the gas self-closing valve is realized. However, when a trace amount of fuel gas leaks, the valve cavity of the existing overflowing assembly cannot lose pressure, and at the moment, the overflowing assembly does not close the self-closing valve, so that the tiny fuel gas leakage cannot be found in time, and further corresponding measures cannot be taken effectively and timely, and property loss or safety accidents are easily caused.

In order to solve the problems, the applicant conceives that a micro-leakage sensor can be added in the existing gas self-closing valve to detect the micro-leakage of the gas of the valve body of the self-closing valve, correspondingly, when the micro-leakage of the gas occurs, a set of device capable of automatically closing the gas inlet of the self-closing valve needs to be arranged, and then if the micro-leakage of the gas occurs, the function of automatically closing the self-closing valve can be realized.

Based on the overall concept, the technical scheme of the application is provided, and the specific scheme is as follows:

as shown in figure 1, the embodiment of the utility model discloses a gas self-closing valve, including valve body 1, still include: the moving assembly is arranged at the air inlet of the valve body 1 in a sliding manner; the first magnetic assembly is arranged in the valve body 1 in a sliding mode, and the side wall of the first magnetic assembly is clamped with the end part of the moving assembly and used for driving the moving assembly to open or close the air inlet of the valve body 1; the second magnetic component is positioned in the valve body 1, can move relative to the valve body 1 and is magnetically attracted with the first magnetic component; a micro-leak sensor 23 provided on the valve body 1; a signal input end of the control component is connected with the micro-leakage sensor 23, and a control end of the control component is connected with the second magnetic component; when the micro-leakage sensor 23 detects that the valve body 1 has gas micro-leakage, the control component is used for controlling the second magnetic component to move to the first position in the valve body 1, and the first magnetic component drives the moving component to move under the action of magnetic attraction so as to seal the air inlet of the valve body 1.

In the present exemplary embodiment, the valve body 1 may have the following structure: the valve body 1 may include an upper cover 25, a lower cover 27, a pipe, a union joint 22 and a control knob, and the structure of the valve body 1 is conventional in the art, and the present embodiment does not limit the structure, and refer to fig. 1 and 2 specifically.

In the present exemplary embodiment, the first magnetic assembly is used to drive the moving assembly to open or close the air inlet of the valve body 1, and in the art, the means for opening or closing the valve body 1 is to close or open an air inlet channel disposed inside the valve body 1; the structure shown in fig. 3 and 4 is adopted, an annular baffle plate with a size smaller than the inner diameter of the pipeline is arranged in the pipeline of the valve body 1, a hollow cylinder is arranged in the middle of the annular baffle plate, an overflowing column 15 for sliding connection of the hollow cylinder is arranged, an overflowing sheet 13 is arranged on the overflowing column 15, and the overflowing column 15 can block or open the middle part of the annular baffle plate in the sliding process of driving the overflowing sheet 13, so that the pipeline can be opened or closed.

In this example embodiment, the utility model discloses gas self-closing valve, including valve body 1, still include: the moving assembly is arranged at the air inlet of the valve body 1 in a sliding manner; the first magnetic assembly is arranged in the valve body 1 in a sliding mode, and the side wall of the first magnetic assembly is clamped with the end part of the moving assembly and used for driving the moving assembly to open or close the air inlet of the valve body 1; the second magnetic component is positioned in the valve body 1, can move relative to the valve body 1 and is magnetically attracted with the first magnetic component; a micro-leak sensor 23 provided on the valve body 1; a signal input end of the control component is connected with the micro-leakage sensor 23, and a control end of the control component is connected with the second magnetic component; when the micro-leakage sensor 23 detects that the valve body 1 has gas micro-leakage, the control component is used for controlling the second magnetic component to move to the first position in the valve body 1, and the first magnetic component drives the moving component to move under the action of magnetic attraction so as to seal the air inlet of the valve body 1. The gas self-closing valve provided by the scheme has the advantages that abnormal micro flow detection is realized, the control assembly automatically closes the valve, the valve is mechanically locked after being closed, and the safety performance of the gas self-closing valve is improved.

In one embodiment, when the moving component opens the air inlet of the valve body 1, the control component controls the second magnetic component to be kept at a second position in the valve body 1, and the first position and the second position are two different positions in the valve body 1.

In one embodiment, the control assembly comprises: a control unit 26 located inside the valve body 1, the information input end of which is connected to the micro-leak sensor 23; the action component 3 is connected with the control component 26 in a control mode, and the action component 3 is clamped with the second magnetic assembly; when action part 3 with the second magnetic assembly joint, action part 3 restriction the second magnetic assembly keeps in second position department in the valve body 1, when action part 3 with the second magnetic assembly is not the joint, the second magnetic assembly by the second position removes to first position.

In the present exemplary embodiment, the action part 3 includes: remote electromagnet, push rod 4; the remote electromagnet is used for driving the push rod 4 to move, and when the push rod 4 is in an extending state, the push rod 4 locks the second magnetic assembly; when the push rod 4 is in a retraction state, the second magnetic component moves, under the attraction effect of the second magnetic component and the first magnetic component, the first magnetic component drives the limiting component to move downwards, and the limiting component drives the moving component to close the valve body 1.

Specifically, the remote electromagnet is an electromagnet capable of realizing remote control, in this embodiment, the remote electromagnet can be obtained by direct purchase, and certainly, the remote electromagnet can be controlled to be powered on or powered off by the action of a remote control assembly, so as to realize the purpose of remotely controlling the remote electromagnet to work; in practical application, the remote control of the control assembly belongs to the conventional technical means in the field, and the embodiment does not improve the remote control. For example, the existing solution implemented by remote control is the control of an unmanned aerial vehicle.

In one embodiment, the first magnetic assembly comprises: the limiting rod 10 is arranged inside the valve body 1 in a sliding mode; a trapezoidal groove 12 is formed in the side wall of the valve body, and when the left end of the moving assembly is positioned on the bottom surface of the trapezoidal groove 12, the moving assembly opens the valve body 1; when the moving component is positioned on the side wall of the limiting rod 10 and is not positioned in the trapezoidal groove 12, the moving component closes the valve body 1; the limiting rod spring 11 is sleeved on the outer side of the limiting rod 10, one end of the limiting rod spring is abutted with the side wall of the limiting rod 10, and the other end of the limiting rod spring is abutted with the valve body 1; and the magnet 2 is arranged on the limiting rod 10 and is magnetically attracted with the second magnetic component.

In this example embodiment, the first magnetic component may include: a limiting plug 9, a limiting rod 10 and a limiting rod spring 11; the limiting plug 9 is arranged on the valve body 1, the limiting rod 10 is movably arranged in the valve body 1, and the limiting rod spring 11 is used for applying elastic force towards the limiting plug 9 to the limiting rod 10; the magnet 2 is arranged at the bottom of the limiting rod 10, and a trapezoidal groove 12 is formed in the side wall of the limiting rod 10; when the left end of the moving component is positioned at the bottom surface of the trapezoidal groove 12, the moving component opens the valve body 1; when the moving component is positioned on the side wall of the limiting rod 10 and is not positioned in the trapezoidal groove 12, the moving component closes the valve body 1.

In one embodiment, the second magnetic assembly comprises: the magnet locking seat 5 is slidably arranged in the valve body 1, a limiting groove is formed in the side wall of the magnet locking seat, the action part 3 can be clamped in the limiting groove, and when the action part 3 is clamped in the limiting groove, the second magnetic component is kept at a second position in the valve body 1; the magnet spring 6 is sleeved on the side wall of the magnet locking seat 5, one end of the magnet spring is abutted with the valve body 1, and the other end of the magnet spring is abutted with the top of the magnet locking seat 5; and the magnetic part 7 is fixedly connected to the magnet locking seat 5 and is magnetically attracted with the magnet 2.

In this exemplary embodiment, as shown in fig. 1 and 2, the second magnetic assembly includes: a magnet locking seat 5, a magnet spring 6 and a magnetic piece 7; magnet spring 6 set up in the below of magnet locking seat 5 is used for popping out magnet locking seat 5, magnetic part 7 sets up the top of magnet locking seat 5 be provided with on the lateral wall of magnet locking seat be used for with the spacing portion 8 of 4 joints of push rod.

In one embodiment, the moving assembly comprises: the flow post 15 is arranged in the air inlet channel of the valve body 1 in a sliding mode, and one end of the flow post abuts against the side wall of the limiting rod 10; the overflowing sheet 13 is fixedly connected to the side wall of the overflowing column 15, and the overflowing column 15 penetrates through the overflowing sheet 13; the overflowing spring 14 is positioned in the air inlet channel, one end of the overflowing spring is connected with the valve body 1, and the other end of the overflowing spring is abutted against the overflowing sheet 13 and used for driving the overflowing sheet 13 to open an air inlet of the valve body 1; when the end of the overflowing column 15 is positioned at the bottom surface of the trapezoidal groove 12, the overflowing sheet 13 opens the valve body 1; when the end of the overflow column 15 is located on the side wall of the limiting rod 10 and is not located in the trapezoidal groove 12, the overflow sheet 13 closes the valve body 1.

In this example embodiment, as shown in fig. 1 to 4, the overcurrent assembly includes: the overflowing sheet 13, the overflowing spring 14 and the overflowing column 15; one end of the overflowing column 15 contacts the limiting rod 10, the other end of the overflowing column is fixedly connected with the overflowing sheet 13, the overflowing spring 14 is used for applying elastic force to the overflowing sheet 13, and the overflowing spring 14 is used for driving the overflowing sheet 13 to open the valve body 1. The end of the flow post 15 is shaped as a hemisphere.

In one embodiment, the end of the flow post 15 is hemispherical in shape.

In a specific embodiment, the method further comprises the following steps: a manual unlocking assembly for moving the second magnetic assembly from the first position to the second position. The manual unlocking assembly is used for adjusting the distance between the first magnetic assembly and the second magnetic assembly so as to control the limiting assembly to move, and the valve body 1 is opened by the moving assembly under the driving of the movement of the limiting assembly.

In one embodiment, the manual unlocking assembly comprises: a reset knob 16, a reset rotating shaft 17, a cotter 18, a reset deflector rod 19 and a reset spring plate 20; the reset knob 16 is rotatably arranged on the valve body 1; the reset rotation shaft 17 rotates along with the rotation of the reset knob 16; the reset deflector rod 19 is arranged on the side wall of the reset rotating shaft 17 and rotates along with the rotation of the reset rotating shaft 17, the reset deflector rod 19 is used for pressing the second magnetic component so as to increase the distance between the first magnetic component and the second magnetic component, and the reset elastic sheet 20 is arranged on the reset rotating shaft 17 and used for resetting the reset knob 16.

This exemplary embodiment is shown in fig. 5, 6, and 7. The manual unlocking assembly comprises: a reset knob 16, a reset rotating shaft 17, a cotter 18, a reset deflector rod 19 and a reset elastic sheet 20; the reset knob 16 is rotationally arranged on the valve body 1; the reset rotation shaft 17 rotates along with the rotation of the reset knob 16; the reset deflector rod 19 is arranged on the side wall of the reset rotating shaft 17 and rotates along with the rotation of the reset rotating shaft 17, the reset deflector rod is used for pressing the second magnetic component so as to increase the distance between the first magnetic component and the second magnetic component, and the reset elastic sheet 20 is arranged on the reset rotating shaft 17 and is used for resetting the reset knob 16.

In one specific embodiment, the reset lever 19 is fixed to the reset rotary shaft 17 by a cotter 18. And a power supply 21 for supplying power to the control assembly.

Example 2

On the basis of the above embodiment 1, the present embodiment further describes in detail an implementation manner of the scheme of the present application with reference to the accompanying drawings:

micro-leakage valve closing principle:

when the intelligent remote-transmission gas self-closing valve is normally used, as shown in fig. 1, the intelligent remote-transmission gas self-closing valve is in a valve opening state, at the moment, the limiting rod 10 is in a rising position under the action of the limiting rod spring 11 and the limiting plug 9, meanwhile, the bottom space of the trapezoidal groove 12 on the limiting rod 10 leaves the cylindrical spherical surface at the front end of the overflowing sheet 13 and does not limit the overflowing sheet 13, so that the opening state of the overflowing assembly is kept, and the valve is normally ventilated. Meanwhile, the remote electromagnet controls the push rod 4 to extend out and be clamped in the limiting part 8 of the magnet locking seat 5, so that the magnet 2 and the magnetic part 7 are kept within a specific distance, and at the moment, the limiting rod spring 11 is larger than the suction force between the upper magnetic part and the magnetic part 7, so that the limiting rod 10 is continuously kept at a rising position, and the valve is normally opened for ventilation.

When a micro-leakage sensor 23 arranged at the rear end of the valve cavity detects abnormal micro-flow, the intelligent control assembly judges that micro-leakage occurs through preset parameters, then the intelligent control assembly energizes the remote electromagnet, the electromagnet attracts back the push rod 4 to unlock the limit part 8 of the magnet 2, the magnetic part 7 rapidly moves up to the limit position of the shell 24 under the combined action of attraction force of the magnet 2 and force of the magnet spring 6, at the moment, the magnet 2 overcomes the limit rod spring 11 and moves down to the limit position of the shell 24 under the attraction force of the magnetic part 7, meanwhile, the overflowing sheet 13 is moved right by the thrust of the trapezoidal groove 12 (shown in figures 3 and 4) of the limit rod 10 to close the overflowing assembly, and then the valve is automatically closed due to throttling under-pressure (shown in figure 2).

Mechanical locking and manual unlocking principles:

after the valve is automatically closed remotely, after a worker needs to perform on-site troubleshooting and fault handling, the valve can be unlocked manually (the fault is not eliminated, and the valve can still be automatically closed and locked after manual unlocking). When the lock is manually unlocked, the reset knob 16 is rotated according to the direction shown in fig. 4, as shown in fig. 6, the reset knob 16 overcomes the elasticity of the reset elastic sheet 20 in fig. 7, the reset rotating shaft 17 and the reset poking rod 19 at the tail end are driven to rotate to press the magnetic part 7, and the push rod 4 at the end part of the remote electromagnet is automatically clamped into the clamping groove of the limiting part 8 of the magnet 2 to lock the magnetic part 7; meanwhile, the magnet 2 is separated from the magnetic part 7 by a certain distance, the suction force is attenuated, so that the magnet 2 is reset under the action of the limiting rod spring 11, the overflowing sheet 13 moves to the bottom of the trapezoidal groove 12 to the left, the overflowing assembly is opened, and the valve can be safely opened.

The reset elastic sheet 20 passes through the fixed notch through a fixed pin, one end of the reset elastic sheet is connected with the shell 24, and the other end of the reset elastic sheet is connected with the reset rotating shaft 17; after manual unlocking, the reset deflector rod 19 rotates clockwise to return under the action of the reset elastic sheet 20, and a safe space is reserved for the action of the magnetic piece 7.

The principle of overflowing automatic valve closing:

the intelligent remote-transmission gas self-closing valve can monitor the flow in the valve body 1 by additionally arranging a micro-flow sensor, and when the flow in the valve body 1 is over-pressure or under-pressure, the valve is automatically closed by remotely controlling the overflowing assembly, so that the dual protection of remote overflowing automatic closing of the valve and mechanical closing of the overflowing assembly is realized; the remote overcurrent automatic closing value can be set by itself, and when the monitored flow exceeds the set value, the valve intelligent control assembly 26 energizes the remote electromagnet 3 to close the valve (the working principle is the same as that of the micro-leakage valve closing).

The user actively requires the valve closing principle:

when a user goes out and does not close the manual valve or does not determine whether to close the manual valve, the user can actively require the remote control center to remotely close the valve (the working principle is the same as that of micro-leakage valve closing), and the safety of gas use by the user is ensured.

The intelligent remote-transmission gas self-closing valve provided by the scheme can automatically close the valve under special working conditions (micro leakage, overflowing, active requirements and the like) and has the functions of mechanical locking and manual unlocking after the valve is closed. Whole automatic valve structure that closes adopts magnetism to inhale the formula principle, effectually completely cuts off gas passageway and control module, avoids the gas to get into control area territory (electrified region), and this structure leaks for increasing simultaneously, improves valve seal's reliability. Meanwhile, the valve closing principle of the structure is that the limiting rod 10 influences the action of the overflowing sheet 13, so that the valve is closed, the control precision of the structure is sensitive and effective, the main structure of the self-closing valve is prevented from being influenced, the overpressure, underpressure and mechanical overflowing functions of the self-closing valve are not influenced, and the reliability and maintainability of the self-closing valve are ensured.

The existing self-closing valve is made up of the fact that the existing self-closing valve does not have the function of micro-leakage detection, so that self-closing valve products are more complete in function, safe and reliable; the modular design is adopted, the functions of flow monitoring, leakage alarm, automatic valve closing, remote control and the like are added on the basis of not influencing the functions and the structure of the original self-closing valve, and the integration of the functions of the traditional self-closing valve, a gas alarm and an electromagnetic valve is equivalent to the integration of the functions of the traditional self-closing valve, the traditional gas alarm and the traditional electromagnetic valve; the intelligent gas management system can be integrated into the Internet of things for use, and realizes real-time and effective big data management of information, thereby realizing the management and use of intelligent gas; the user can realize remote automatic valve closing, and the user can use gas more safely and conveniently.

It should be noted that the above-described embodiments are only some of the claimed embodiments, and not all of the claimed embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments in the application without creative efforts, shall fall within the scope of protection of the application. In the present specification, each embodiment is described with emphasis on differences from other embodiments, and the same and similar parts between the embodiments may be referred to each other.

Claims

1. Gas self-closing valve, including valve body (1), its characterized in that still includes:

the moving assembly is arranged at the air inlet of the valve body (1) in a sliding manner;

the first magnetic assembly is arranged in the valve body (1) in a sliding mode, the side wall of the first magnetic assembly is clamped with the end part of the moving assembly, and the first magnetic assembly is used for driving the moving assembly to open or close the air inlet of the valve body (1);

the second magnetic component is positioned in the valve body (1), can move relative to the valve body (1) and is magnetically attracted with the first magnetic component;

a micro-leakage sensor (23) arranged on the valve body (1);

the signal input end of the control component is connected with the micro-leakage sensor (23), and the control end of the control component is connected with the second magnetic component;

when the micro-leakage sensor (23) detects that gas micro-leakage exists in the valve body (1), the control assembly is used for controlling the second magnetic assembly to move to a first position in the valve body (1), and the first magnetic assembly drives the moving assembly to move under the action of magnetic attraction to seal the gas inlet of the valve body (1).

2. Gas self-closing valve according to claim 1, characterized in that said control assembly controls said second magnetic assembly to remain in a second position inside said valve body (1) when said moving assembly opens the inlet of said valve body (1), said first and second position being two different positions inside said valve body (1).

3. Gas self-closing valve according to claim 2, characterized in that said control assembly comprises:

a control component (26) which is positioned inside the valve body (1) and the information input end of which is connected with the micro-leakage sensor (23);

the control component (26) is connected with the action component (3) in a control mode, and the action component (3) is clamped with the second magnetic assembly;

when action part (3) with the second magnetic component joint, action part (3) restriction second magnetic component keeps in second position department in valve body (1), when action part (3) with the second magnetic component does not joint, second magnetic component by the second position removes to first position.

4. Gas self-closing valve according to claim 3, characterized in that said first magnetic assembly comprises:

the limiting rod (10) is arranged inside the valve body (1) in a sliding mode; a trapezoidal groove (12) is formed in the side wall of the valve body, and when the left end of the moving assembly is positioned on the bottom surface of the trapezoidal groove (12), the moving assembly opens the valve body (1); when the moving assembly is positioned on the side wall of the limiting rod (10) and is not positioned in the trapezoidal groove (12), the valve body (1) is closed by the overflowing assembly;

the limiting rod spring (11) is sleeved on the outer side of the limiting rod (10), one end of the limiting rod spring is abutted against the side wall of the limiting rod (10), and the other end of the limiting rod spring is abutted against the valve body (1);

and the magnet (2) is arranged on the limiting rod (10) and is magnetically attracted with the second magnetic component.

5. Gas self-closing valve according to claim 4, characterized in that said second magnetic assembly comprises:

the magnet locking seat (5) is arranged in the valve body (1) in a sliding mode, a limiting groove is formed in the side wall of the magnet locking seat, the action part (3) can be clamped in the limiting groove, and when the action part (3) is clamped in the limiting groove, the second magnetic assembly is kept at a second position in the valve body (1);

the magnet spring (6) is sleeved on the side wall of the magnet locking seat (5), one end of the magnet spring is abutted against the valve body (1), and the other end of the magnet spring is abutted against the top of the magnet locking seat (5);

and the magnetic part (7) is fixedly connected to the magnet locking seat (5) and is magnetically attracted with the magnet (2).

6. Gas self-closing valve according to claim 5, wherein said moving assembly comprises:

the flow post (15) is arranged in an air inlet channel of the valve body (1) in a sliding mode, and one end of the flow post is abutted to the side wall of the limiting rod (10);

the overflowing sheet (13) is fixedly connected to the side wall of the overflowing column (15), and the overflowing column (15) penetrates through the overflowing sheet (13);

the overflowing spring (14) is positioned in the air inlet channel, one end of the overflowing spring is connected with the valve body (1), and the other end of the overflowing spring is abutted against the overflowing sheet (13) and used for driving the overflowing sheet (13) to open an air inlet of the valve body (1);

when the end of the overflowing column (15) is positioned on the bottom surface of the trapezoidal groove (12), the overflowing sheet (13) opens the valve body (1); when the end part of the overflowing column (15) is positioned on the side wall of the limiting rod (10) and is not positioned in the trapezoidal groove (12), the overflowing sheet (13) closes the valve body (1).

7. Gas self-closing valve according to claim 6, characterised in that the end of said post (15) is shaped as a hemisphere.

8. The gas self-closing valve according to claim 7, further comprising: a manual unlocking assembly for moving the second magnetic assembly from the first position to the second position.

9. The gas self-closing valve according to claim 8, wherein said manual unlocking assembly comprises: a reset knob (16), a reset rotating shaft (17), a cotter pin (18), a reset deflector rod (19) and a reset spring plate (20); the reset knob (16) is rotationally arranged on the valve body (1); the reset rotating shaft (17) rotates along with the rotation of the reset knob (16); the reset driving lever (19) is arranged on the side wall of the reset rotating shaft (17) and rotates along with the rotation of the reset rotating shaft (17), the reset driving lever (19) is used for pressing the second magnetic assembly so as to increase the distance between the first magnetic assembly and the second magnetic assembly, and the reset elastic sheet (20) is arranged on the reset rotating shaft (17) and used for resetting the reset knob (16).

10. Gas self-closing valve according to claim 9, characterised in that said reset lever (19) is fixed to said reset rotation shaft (17) by means of a cotter pin (18).