KR101483503B1 - Safety valve for gas leakage alarm - Google Patents

Abstract

The present invention relates to a structure of a valve sensing the leak of inflow fluid (F1) and outflow fluid (F2), comprising: a main body pipe (10) which is connected between connectors (1) (2) with each fluid path and flows the inflow fluid (F1); a solenoid part (20) including a magnet (23), a stay-put core (24), a plunger (25), a space unit (26), and an opening and closing means (21) for opening and closing a movement detecting sensor (27); a leak detection part (30) confirming whether leaked or not through the pressure difference of the inflow fluid (F1) and the outflow fluid (F2) leaking on the fluid path which is blocked by the solenoid part (20); and a control unit (40) which makes a user recognize a warning signal in the leak equipped with the solenoid part (20).

Description

[0001] The present invention relates to a safety valve for a gas leakage alarm,

The present invention relates to a safety valve for a gas leakage alarm, more specifically, to check whether a fluid is leaked or not by operating a valve to shut off a gas to prevent an accident, and a fixed core and a plunger To a safety valve for a gas leakage alarm which can prevent sticking phenomenon by preventing an adhered state.

Normally, a device using a gas such as a gas range is piped through a cross-type valve provided with a knob. In recent years, as a result of various types of accidents due to gas leakage, the installation of fire detection means to detect, warn, and extinguish gas has been legally strengthened in order to prevent accidents. The valve itself has a built- If a pressure drop occurs, it may be used in addition to the function of shutting off the pipeline. However, since the gas detector used in the conventional fire-fighting means detects the leakage state after the gas is leaked to fill a certain space, it is difficult to promptly respond to the gas, and the gas detector is insufficient for perfect protection. When the gas is leaked in the underground space It is impossible to detect at all and often causes a major accident from underground. When a plurality of gases or flammable fluids are used at the same time, the respective detectors must be installed at different positions, resulting in complicated management and inconvenience. In the case of a valve with a built-in fuse, it operates only at a sudden pressure change due to breakage of the piping, etc., so that there is a decisive weak point in early detection of a minute leakage state. A variety of gas leakage check valves have been commercialized and used.

For example, according to Korean Utility Model Registration No. 0294427, a valve for detecting a leak by a differential pressure between each of the connection ports 22 and 23 is connected by using connection ports 22 and 23 for interrupting the fluid flow path, , A body (21) having a bypass flow path for sending a part of the fluid of the upstream side connection (22) to the downstream side connection (23) by another path; A cylinder (24) mounted to communicate with one bypass flow path of the body (21) and having an opening at upper and lower ends thereof; An indicator 25 mounted on the cylinder 24 so as to be movable up and down and having a plurality of marks 25a on an outer surface thereof; A transparent cap 26 tightly mounted on the body 21 to maintain the airtightness of the cylinder 24 and the indicator 25; And a detection switch (35) mounted on the transparent cap (26) to generate a signal in contact with the set descending stroke end of the indicator (25). .

As another example, Korean Patent Laid-Open Publication No. 2006-0006258 discloses a gas leakage detecting device for detecting a gas leak on a gas pipe connected to a gas pipe for supplying gas to a combustion device, An apparatus, comprising: a connection line having a first end and a second end, both ends of which are coupled to the gas piping; An intermediate valve installed in the connection line between the first end and the second end to shut off gas flowing through the connection line; A first line extending in communication with the connection line between the intermediate valve and the first end; A second line extending in communication with the connection line between the intermediate valve and the second end; The liquid is contained in the liquid at a predetermined height, the end of the first line is positioned to be contained in the liquid, the end of the second line is sealed on the surface of the liquid, The chamber being formed so as to be visible from the outside when bubbles are generated through the contained liquid; And a check valve member installed at the first line and the second line for opening and closing the first line and the second line so that the first line and the second line are kept closed by the check valve member at normal times So that the gas between the combustion device and the intermediate valve is prevented from flowing back to the chamber, and when the gas leakage is confirmed, the check valve member is operated to confirm gas leakage between the combustion device and the intermediate valve. Gas leak detection device.

However, in the above-mentioned Korean Utility Model Application No. 0294427 filed by the present applicant on July 09, 2002, most of the above-mentioned prior arts are mostly used for commercialization, And reading the naked eye or the pressure sensor with digital technology due to the differential pressure of the exhaust gas.

Korean Registered Utility Model No. 0294427 "Safety valve for gas leakage alarm" Korean Patent Laid-Open Publication No. 2006-0006258 " Gas Leakage Detection Apparatus "

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems in the prior art. Accordingly, it is an object of the present invention to provide a fluid- A safety valve for a gas leakage alarm that can prevent a sticking phenomenon by preventing a state in which the valve body is completely in close contact with the valve body.

In order to accomplish the above object, the present invention provides a structure of a valve that interrupts a flow path on a connection port to detect leakage of an inflow fluid and a discharge fluid therein, the valve comprising: Body tube; A magnet for generating a magnetic force to block the flow path through a blocking member moving by a magnetic force so as to move and block the inflow fluid to one side of the main tube; a fixed core for generating a magnetic force using the magnet; A plunger that approaches the fixed core even when the power source is turned off when a predetermined magnetic force is reached; a space portion provided with the fixed core and the plunger in close contact with each other by a magnetic force generated through the magnet; A solenoid portion having an opening / closing means interposed therebetween; A leakage detection unit for detecting leakage through a pressure difference between an inflow fluid leaking on a flow path blocked by the solenoid unit and a discharge fluid; And a control unit interlocked with the leakage detection unit to cut off gas supply at the time of leakage and recognize a warning signal to the user.

At this time, the opening and closing means of the solenoid portion may include a magnet generating a magnetic force to block the flow path through the blocking member, a fixed core generating a magnetic force using the magnet, A plunger approaching the fixed core, a space provided with the fixed core and the plunger in close contact with each other by a magnetic force generated through the magnet, and an operation detection sensor for sensing the movement of the plunger.

The leakage detection unit may include a diaphragm that expands when the same pressure of the inflow fluid and the discharge fluid blocked by the opening and closing means is generated, a sensing rod that moves through the expanded diaphragm, And a leakage detection sensor for detecting the leakage of the fluid.

It should be understood, however, that the terminology or words of the present specification and claims should not be construed in an ordinary sense or in a dictionary, and that the inventors shall not be limited to the concept of a term It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As described above, according to the present invention, it is possible to prevent the accident by preventing the fluid from leaking, to shut off the gas by performing the operation of the valve, and to prevent the stationary core and the plunger from completely coming into close contact with each other through the space portion. So that it is possible to prevent sticking phenomenon.

1 and 2 are sectional views showing an operating state of a safety valve for gas leakage alarm according to the present invention,
3 is a sectional view showing a solenoid portion of a safety valve for gas leakage alarm according to the present invention,
4 is a cross-sectional view illustrating a leakage detection unit of a safety valve for a gas leakage alarm according to the present invention.
5 is a cross-sectional view showing a safety valve for a gas leakage alarm according to an embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a cross-sectional view showing a solenoid portion of a safety valve for a gas leakage alarm according to the present invention, and Fig. 4 is a cross-sectional view of the safety valve for a gas leakage alarm according to the present invention. FIG. 5 is a cross-sectional view showing a safety valve for a gas leakage alarm according to an embodiment of the present invention. FIG.

The present invention relates to a safety valve for gas leakage alarm, and comprises a main body pipe (10), a solenoid portion (20), a leakage detection portion (30), and a control portion (40).

The main body pipe 10 according to the present invention communicates with the respective flow paths between the connection ports 1 and 2 to flow the inflow fluid F1 and the discharge fluid F2. The main pipe 10 is located between the connecting ports 1 and 2 and is located at a midpoint between the inlet fluid F1 and the outlet fluid F2 flowing to an apparatus using a gas such as a gas range So that the solenoid unit 20 and the leakage sensing unit 30 described below are interlocked with each other.

The solenoid unit 20 according to the present invention includes opening and closing means for opening and closing the flow path through the blocking member 22 through a magnetic force to move and block the inflow fluid F1 to one side of the main tube 10 21). The solenoid unit 20 is provided with an opening and closing means 21 for interrupting the inflow fluid F1 that communicates with the main tube 10 and controls the flow of the inflow fluid F1. To block the flow of the inflow fluid (F1) by blocking the flow path of the main pipe (10), and to flow the discharge fluid (F2) by opening the flow path.

The opening and closing means 21 of the solenoid unit 20 includes a magnet 23 for generating a magnetic force to block the flow path through the blocking member 22 and a fixed core A plunger 25 that approaches the fixed core 24 when the power is turned off when the power is applied to the fixed core 24 and the plunger 25 by the magnetic force generated through the magnet 23, A space portion 26 provided in a manner to closely contact the plunger 25 and an operation detection sensor 27 for detecting the movement of the plunger 25. The opening and closing means 21 of the solenoid portion 20 generates a magnetic force in the fixed core 24 using the strong magnetic force of the magnet 23 so that the reciprocating plunger 25 is supplied with power for several seconds, (24). The approaching plunger 25 utilizes a characteristic in which the fixed core 24 and the plunger 25 are brought into close contact with each other by the magnetic force even when the power supply is released when the predetermined magnetic force is generated, (28) so as to maintain airtightness. The magnet 23 described above is preferably a neodymium magnet capable of generating a strong magnetic force, but it is preferable that the magnet 23 has a magnetic force to some extent.

At this time, a space 26 is provided between the fixed core 24 and the plunger 25, and this space 26 is formed by simply securing a space between the fixed core 24 and the plunger 25 A magnetic force is generated on the space 26 between the stationary core 24 and the plunger 25 so that the magnetic force is generated in the fixed core 24 and the plunger 25, The more the pulling force of the fixed core 24 and the plunger 25 becomes strong so that the blocking member 21 can block the inflow fluid F1 flowing by pressing the blocking jaw 28 with a stronger force. Since the core 24 and the plunger 25 are not in contact with each other by the space 26, the core 24 and the plunger 25 can be prevented from adhering to the plunger 25 for a long time If the preliminary power supply drops below a predetermined voltage due to the fixing phenomenon, the solenoid unit 20 can not operate. Therefore, the phenomenon that the inflow fluid F1 of the inflow fluid F1 is interrupted Lt; / RTI > Then, the motion detection sensor 27 confirms the movement of the plunger 25 before and after the movement, and the control unit 40, which will be described later, recognizes the movement. The thus-recognized motion detection sensor 27 must be interlocked with the leak detection unit 30, which will be described later.

The leak detecting unit 30 according to the present invention confirms leakage through the pressure difference between the inflow fluid F1 leaking on the flow path blocked by the solenoid unit 20 and the discharge fluid F2. The leakage detection unit 30 is configured to be able to confirm the leakage of the inflow fluid F1 even when the flow of the inflow fluid F1 is blocked by the opening and closing means 21 of the solenoid unit 20 to be.

The leakage detection unit 30 includes a diaphragm 31 that expands when the same pressure of the inflow fluid F1 and the discharge fluid F2 is generated by the opening and closing means 21, And a leakage detection sensor 33 which is pressed by the detection rod 32 and sends leakage information to the control unit 40. [ First, when the flow path is opened by the opening / closing means 21, the same pressure is generated between the inflow fluid F1 and the discharge fluid F2, so that the diaphragm 31 is inflated and fixed integrally with the diaphragm 31 The detection rod 32 is moved and the switch 33a of the leak detection sensor 33 is pushed by the moving detection rod 32 so that the leak detection sensor 33 maintains the normal state gas pressure, The inflow fluid F1 and the discharge fluid F2 have different pressures, and the inflated diaphragm 31 is contracted. At this time, when the inflow fluid F1 is leaked while the flow path is blocked by the opening / closing means 21 of the solenoid portion 20, the motion detection sensor 27 recognizes that the flow path is shut off The same pressure of the inflow fluid F1 and the discharge fluid F2 is generated as the inflow fluid F1 is leaked so that the diaphragm 31 expands and flows into the leak detection sensor 33 by the detection rod 32, So that the leakage of the inflow fluid F1 can be sensed by stimulating the leak detection sensor 33. In this case, The diaphragm 31 of the opening and closing means 21 is provided with a restoring spring 34 so that it can move to the correct position when it is retracted after being expanded.

In addition, the control unit 40 according to the present invention interlocks with the leakage detection unit 30 to interrupt the gas supply at the time of leakage and recognize a warning signal to the user. The control unit 40 interlocks with the motion detection sensor 27 of the solenoid unit 20 and the leakage detection sensor 33 of the leakage detection unit 30 to collect all information about the flow of the inflow fluid F1 And the user is alerted, and the flow path is automatically shut off to block the supply of the inflow fluid F1 in advance to stop the use of the inflow fluid F1 in an unsafe state, thereby preventing an accident from occurring.

5 is a cross-sectional view showing a safety valve for gas leakage alarm according to an embodiment of the present invention.

At this time, the safety valve for gas leakage alarm of the present invention can be used on a large-scale main pipe. This can be achieved by increasing the size of the shut-off member 22 because the various other configurations and basic principles are the same and the flow paths of the ports 1 and 2 are formed wider.

As described above, according to the present invention, it is possible to prevent the accident by preventing the gas from flowing by operating the valve in order to confirm whether the fluid is leaked or not, and to prevent the fixing core from completely sticking to the plunger through the space, Provides a possible effect.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

1, 2: Connector 10: Body tube
20: Solenoid section 21: opening / closing means
22: blocking member 23: magnet
24: stationary core 25: plunger
26: Space section 27: Motion detection sensor
30: leak detection part 31: diaphragm
32: detection rod 33: leak detection sensor
40:

Claims (3)

A structure of a valve interrupting a flow path on a connection port (1) (2) to detect leakage of an inflow fluid (F1) and a discharge fluid (F2)
A main pipe 10 communicating with the respective flow paths between the connection ports 1 and 2 to flow the inflow fluid F1;
A magnet 23 for generating a magnetic force to block the flow path through a blocking member 22 that moves by a magnetic force so as to move and block the inflow fluid F1 to one side of the main tube 10; A plunger 25 that approaches the stationary core 24 when the power is turned off when a predetermined magnetic force is reached through a reciprocating motion and a magnet 23 A space portion 26 provided with the fixed core 24 and the plunger 25 in close contact with each other by the generated magnetic force and an opening and closing means 21 interposed between the motion detection sensor 27 for sensing the movement of the plunger 25, A solenoid portion 20 having a first end;
A leakage detection unit 30 for checking leakage through a pressure difference between the inflow fluid F1 leaking on the flow path blocked by the solenoid unit 20 and the discharge fluid F2; And
And a control unit (40) interlocked with the leakage detection unit (30) to cut off gas supply in case of leakage and recognize a warning signal to a user. delete The method according to claim 1,
The leakage detecting unit 30 includes a diaphragm 31 that expands when the same pressure of the inflow fluid F1 and the discharge fluid F2 is generated by the opening and closing means 21, And a leakage detection sensor 33 which is pressed by the detection rod 32 and sends leakage information to the control unit 40. The gas leakage alarm safety valve according to claim 1, .

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