KR102490859B1 - automatic shutoff device for gas valve - Google Patents

Abstract

The present invention relates to an automatic gas circuit breaker, and more particularly, can detect gas leaking between an intermediate valve and a gas device regardless of whether the intermediate valve is opened or closed, and detects gas leakage while the intermediate valve is open. It relates to an automatic gas circuit breaker capable of preventing accidents by automatically shutting off an intermediate valve.
The present invention for achieving the above object is a connection pipe installed at the end of the gas supply pipe, an intermediate valve installed in the connection pipe, and installed on one side of the connection pipe, so that the operating lever of the intermediate valve is rotatable. It is characterized in that it consists of a case to be installed, and a driving unit installed inside the case to rotate the operation lever to control the opening and closing of the intermediate valve.

Description

Gas automatic shutoff device {automatic shutoff device for gas valve}

The present invention relates to an automatic gas circuit breaker, and more particularly, can detect gas leaking between an intermediate valve and a gas device regardless of whether the intermediate valve is opened or closed, and detects gas leakage while the intermediate valve is open. It relates to an automatic gas circuit breaker capable of preventing accidents by automatically shutting off an intermediate valve.

In general, a gas pipe is installed to reach a gas appliance from a gas supply unit to supply gas to a gas appliance that uses gas as fuel, such as a gas range used in the kitchen or a gas boiler used for heating. At this time, the gas appliance An intermediate valve for regulating the gas supply is installed in the gas pipe connected to so that the user can connect and disconnect the gas simply by manipulating it.

However, leak factors unknown to the user may occur in gas pipes or opening/closing valves connected to gas appliances such as gas ranges or gas boilers. There was a problem with

Therefore, the user installs and uses a separate gas leak detector and gas leak alarm around the gas appliance (near the ceiling or floor of the kitchen) to prevent the above accident, but since it is not completely prevented, the user checks whether or not there is a gas leak. There was a cumbersome and inconvenient drawback in the situation of checking gas leaks by painting soapy water on the gas pipe connection from time to time in order to directly check.

So, in order to solve the above problems, the technology described in Korea Utility Model Registration No. 20-0462991 as shown in FIGS. 1 and 2 has been proposed, the technical feature of which is that it is formed as a tubular body and connected to a gas pipe on the gas supply side. A gas passage 13 is formed between the inlet side connection portion 11 and the outlet side connection portion 12 formed of a tubular body and connected to the gas pipe on the gas appliance side, and a spherical opening and closing ball is installed in the middle of the gas passage 13 A valve body (1) in which an on-off valve (14) is installed; In the middle valve for gas equipment composed of an operating handle (2) installed outside the valve body (1) to open and close an on-off valve (14) installed inside the valve body (1), the valve body (1) has an opening and closing device. an outlet gas pressure sensor 4 installed in the gas passage leading to the valve 14 and the outlet connection 12 and detecting a gas leak in the gas pipe leading from the inside of the valve body to the gas appliance; An electric signal that detects the pressure applied to the outlet gas pressure sensor 4 and inputs the indicated electric signal to the microcomputer operating circuit 51 through a lead terminal, a display device indicating safety or not, and an operating switch 52 that operates the pressure sensor And, a safety light 53 and a warning light 54 that display the inspection result after a certain time after the operation switch is operated, and a speaker 55 that outputs an alarm sound in conjunction with the warning light on one side, and the safety a case 5 having a display 56 for displaying; It is characterized in that it includes a power supply unit 6 formed on one side of the case 5 to supply power to the pressure sensor and the micom operation circuit.

However, the technology described in Korea Utility Model Registration No. 20-0462991 installs a gas pressure sensor in the gas passage of the intermediate valve to check whether there is a gas leak in the gas pipe leading to the gas supply unit or gas appliance in the state in which the intermediate valve is closed. However, there is a problem in that gas leakage cannot be detected when the intermediate valve is open.

In other words, not only when gas is used with the intermediate valve open, but also when gas is not being used, gas leakage cannot be accurately detected, and even if detected, the intermediate valve cannot be operated, resulting in gas leakage. there is

Korea Registered Utility Model No. 20-0462991 (registered on October 5, 2012)

The present invention has been made to solve the above problems, and an object of the present invention is through pressure information detected by a pressure sensor for detecting the pressure inside a connecting pipe provided between a connecting hose connecting an intermediate valve and a gas device. When determining a gas leak, the range of pressure changed by the minute leak is the first section, and the range of pressure changed by the use of a gas device is the second section, and the change in the internal pressure of the connecting pipe is the first section It is to provide an automatic gas circuit breaker capable of accurately determining gas leakage in an open state as well as in a closed state by determining that the gas is leaking if it is within.

And, another object of the present invention is to open the intermediate valve by controlling the drive unit when the intermediate valve is closed when it is determined that the change in gas pressure inside the connecting pipe corresponds to the second section and the gas device is used, thereby stably In addition, when the change in gas pressure inside the connecting pipe corresponds to the first section while the intermediate valve is open, a warning is issued and the intermediate valve is closed at the same time, It is to provide an automatic gas circuit breaker capable of preventing accidents.

The present invention to solve these problems;

A connection pipe installed at an end of the gas supply pipe, an intermediate valve installed in the connection pipe, a case installed on one side of the connection pipe, and a case in which the operation lever of the intermediate valve is rotatably installed, and It is characterized in that it consists of a driving unit installed to control the opening and closing of the intermediate valve by rotating the operating lever.

Here, a pressure sensor for detecting the internal pressure on the output side of the connection pipe is installed on one side of the inside of the case, and a control unit is further provided inside the case, and the control unit uses pressure information detected by the pressure sensor. It is characterized in that it determines whether there is a gas leak.

In addition, the control unit divides the degree of reduction from the current pressure detected by the pressure sensor into two sections, and the control unit is reduced when discharged through a fine gap formed in the connection pipe or the hose pipe connecting the connection pipe and the gas device. It is characterized in that it is divided into a first section and a second section in which gas is reduced when gas is used by the operation of the gas device.

Here, the control unit determines that gas is leaking when a change occurs in the current pressure received in real time from the pressure sensor and the degree of reduction corresponds to the first section, issues a gas leak warning, and opens the intermediate valve. When in the state, it is characterized in that the intermediate valve is closed.

At this time, when a change occurs in the current pressure received in real time from the pressure sensor, the control unit determines that the gas device is used when the degree of reduction corresponds to the second section, and when the intermediate valve is closed. , characterized in that for opening the intermediate valve.

In addition, when a change occurs in the current pressure received in real time from the pressure sensor, when the pressure is high and the intermediate valve is open, it is determined that the use of the gas device is stopped and the intermediate valve is closed. It is characterized by doing.

On the other hand, the intermediate valve penetrates the opening and closing member installed on one side of the inside of the connecting pipe, the operating lever installed inside the case, and the connecting pipe, and one end is connected to the opening and closing member, and the other end is connected to the opening and closing member. It is characterized in that it is made of a connecting bar connected to the operating lever.

Here, the drive unit is composed of a driven bevel gear formed on an outer circumferential surface of the operating lever, a drive motor installed inside the case, and a drive bevel gear rotated by the drive motor but meshed with the driven bevel gear. to be

At this time, the opening and closing member is installed in the opening and closing member accommodating portion formed inside the longitudinal end of the connecting pipe, and one end of the pipe connector is inserted into the end of the connecting pipe to prevent separation of the opening and closing member, and the pipe The other end of the connector is characterized in that connected to the gas supply pipe.

According to the present invention having the above configuration, when determining a gas leak through the pressure information detected by the pressure sensor for detecting the pressure inside the connecting pipe provided between the intermediate valve and the connecting hose connecting the gas device, a fine leak The range of pressure changed by the first section, and the range of pressure changed by the use of the gas device as the second section, if the change in the internal pressure of the connecting pipe is within the first section, it is judged as a gas leak By doing so, there is an effect of accurately determining gas leakage in the open state as well as in the closed state of the intermediate valve.

In addition, in the present invention, when it is determined that the change in gas pressure inside the connecting pipe corresponds to the second section and the gas device is used, the intermediate valve is closed by controlling the driving unit to open the intermediate valve, thereby stably supplying gas. In addition, when the change in gas pressure inside the connecting pipe corresponds to the first section while the intermediate valve is open, a warning is issued and the intermediate valve is closed at the same time to prevent major accidents There are effects that can be done.

1 is a perspective view of a conventional intermediate valve for gas appliances.
2 is a cross-sectional view of a state in which a conventional intermediate valve for gas appliances is installed.
3 is a perspective view of a state in which an automatic gas circuit breaker according to the present invention is installed in a gas supply pipe.
4 is a bottom perspective view of an automatic gas circuit breaker according to the present invention.
5 is a perspective view of a state in which an upper portion of a case of an automatic gas circuit breaker according to the present invention is opened.
6 is a perspective view of a state in which the main substrate of the automatic gas circuit breaker according to the present invention is separated.
7 is a cross-sectional view of an automatic gas circuit breaker according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted. And, it should be understood that the present invention may be embodied in many different forms and is not limited to the described embodiments.

Figure 3 is a perspective view of a state in which the automatic gas circuit breaker according to the present invention is installed in the gas supply pipe, Figure 4 is a perspective view from the bottom of the automatic gas circuit breaker according to the present invention, Figure 5 is the upper part of the case of the automatic gas circuit breaker according to the present invention 6 is a perspective view of the automatic gas circuit breaker according to the present invention in a state in which the main substrate is separated, and FIG. 7 is a cross-sectional view of the automatic gas circuit breaker according to the present invention.

The present invention relates to an automatic gas circuit breaker, and as shown in FIGS. 3 to 7, the configuration includes a connection pipe 100 installed at an end of a gas supply pipe 500 for supplying gas from the outside and the connection pipe 100 ) It consists of an intermediate valve 200 installed in the connecting pipe 100, a case 300 installed on one side of the connection pipe 100, and a drive unit 400 provided inside the case 300.

Here, the operation lever 230 constituting the intermediate valve 200 is rotatably installed in the case 300, and the upper end is formed to protrude upward from the case 300. By rotating the operating lever 230, the intermediate valve 200 is automatically opened and closed.

Therefore, by rotating the operation lever 230 depending on the situation by the driving unit 400 to open and close the intermediate valve 200, the user can stably open and close the intermediate valve 200 without directly managing the opening and closing of the intermediate valve 200. safety accidents can be prevented.

In addition, the connection pipe 100 is connected to the rear surface of the case 300, and at one end of the connection pipe 100, a coupler 150 is formed to protrude forward to the lower rear surface of the case 300. It is coupled by screwing, and a coupling bracket 360 is provided on the upper rear surface of the case 300 so that the upper portion of the connection pipe 100 is firmly coupled.

Here, a battery 370 for supplying power to each component is detachably provided on one side of the inside of the case 300, and a control unit 340 for controlling each component is provided on the other side. The controller ( 340) may be formed in a substrate shape as shown in the drawing.

On the other hand, a pressure sensor 330 is installed to be located at one inner side of the case 300 and at the rear of the battery 370. The pressure sensor 330 detects the internal pressure on the output side of the connection pipe 100. will do

Here, between the couplers 150 formed at the bottom of the connection pipe 100, a connector 120 protrudes to be inserted into the sensor connection hole 320 formed on the lower rear surface of the case 300. , At the center of the rear surface of the pressure sensor 330, a sensing unit 334 inserted into the hollow of the connector 120 is formed to accurately detect the pressure inside the connection pipe 100.

At this time, coupling wings 332 are formed on both sides of the pressure sensor 330 in the longitudinal direction and are fixed to the coupler 150 by screwing.

Therefore, the control unit 340 determines whether or not gas leaks according to the change in the internal pressure of the output side of the connection pipe 100 received from the pressure sensor 330, and accordingly, the Accidents such as gas explosion can be prevented in advance by controlling the opening and closing.

In addition, a display unit 350 is formed on the front of the case 300 to check the operating state of the automatic gas circuit breaker according to the present invention. When the intermediate valve 200 is opened, a timer (not shown) set therein operates. The set time is output to the display unit 350, and when the time is completed, the driving unit 400 is operated to automatically close the intermediate valve 200.

Here, operation buttons 362 are provided on both sides of the display unit 350 to adjust the initially set timer time, and the display unit 350 and operation buttons 362 are provided on the front of the case 300. A transparent cover 366 for protection is detachably provided.

At this time, when the control unit 340 detects gas leakage, a warning message about gas leakage is output through the display unit 350, and continuously through the speaker 380 installed inside the case 300. It outputs a warning alarm so that the user can respond quickly to prevent gas accidents.

In addition, the control unit 340 divides the degree of reduction from the current pressure detected by the pressure sensor 330 into two sections, the connection pipe 100 or the connection pipe 100 and a gas device (not shown). It is divided into a first section reduced when gas is discharged through a fine gap formed in the connecting hose pipe 510 and a second section reduced when gas is used by the operation of the gas device.

Here, the first section is reduced because the internal pressure is reduced by the gas leaking out through the fine gap formed in the hose pipe 510 or the gap between the hose pipe 510 and the connection pipe 100. The degree is minute, and since the gas device uses gas in the second section, the pressure drops rapidly, so the control unit 340 sets a range in which the gas pressure is reduced for each section.

At this time, when the second section is normally used in a gas range, the range is set according to the number of craters used in the gas range based on the reduced value, and the size of the fine gap formed in the first section is also There are various, but when the gap is large and the pressure difference similar to the second section occurs, it can be confirmed with the naked eye, so a gap smaller than that is set as a target.

On the other hand, looking at the method of checking gas leakage through the above-described first section and second section, first, the control unit 340 when a change occurs in the current pressure received in real time from the pressure sensor 330 , when the degree of reduction corresponds to the first section, it is determined that the gas is leaking.

Here, the control unit 340 gives a warning about gas leakage through the speaker 380 and the display unit 350 installed in the case 300 as described above, and the intermediate valve 200 is in an open state. In this case, the driving unit 400 is controlled to close the intermediate valve 200.

At this time, in the present invention, not only the state in which the intermediate valve 200 is closed, but also in the state in which the intermediate valve 200 is open and in the state in which a gas device (not shown) is used, the internal pressure is within the range corresponding to the first section. If it is reduced to , it is possible to check the leakage of gas and to deal with it quickly.

In addition, when a change occurs in the current pressure received by the pressure sensor 330 in real time, the control unit 340 determines that the gas device is used when the degree of reduction corresponds to the second section.

Here, when the intermediate valve 200 is closed, the intermediate valve 200 is opened to stably supply gas, so that the user does not manually control the intermediate valve 200. be able to use it.

In addition, when a change occurs in the current pressure received in real time from the pressure sensor 330, the control unit 340 increases the pressure instead of lowering it, and when the intermediate valve 200 is open, the gas It is judged that the use of the device has been stopped.

Thus, the control unit 340 closes the intermediate valve 200 through the drive unit 400 when a separate pressure change does not occur for a set period of time to prevent a gas accident.

And, as shown in FIG. 7 , the intermediate valve 200 includes an opening/closing member 210 installed on one side of the inside of the connection pipe 100 and the operation lever 230 installed inside the case 300. ) and a connecting bar 220 connecting the operating lever 230 and the opening/closing member 210.

Here, the connecting bar 220 is rotatably installed through the connecting pipe 100 and the case 300, one end is connected to the opening and closing member 210, and the other end is connected to the operating lever 230. As the operating lever 230 rotates, the opening/closing member 210 rotates to open and close the intermediate valve 200.

On the other hand, the opening and closing member 210 is installed in the opening and closing member accommodating portion 110 formed inside the longitudinal end of the connecting pipe 100, and the pipe connector 140 is installed at the end of the connecting pipe 100. It is connected to the gas supply pipe 500.

Here, an insertion portion 142 inserted into the end of the connection pipe 100 is formed at one end of the pipe connector 140 to prevent separation of the opening and closing member 210, and A connection part 144 is formed at the other end and connected to the gas supply pipe 500 .

At this time, gaskets (not shown) are provided on both sides of the opening and closing member 210 to prevent leakage of gas.

In addition, the driving unit 400 includes a driven bevel gear 430 formed along the circumferential direction on the lower surface of the flange formed on the outer circumferential surface of the operating lever 230 and a driving motor 410 installed inside the case 300. ) and a driving bevel gear 420 that is rotated by the driving motor 410 but meshed with the driven bevel gear 430.

Here, a guide bracket 238 formed in a C-ring shape is installed on the outer circumferential surface of the operating lever 230, and the guide bracket 238 is installed on the inner upper surface of the case 300 by screwing to the drive unit ( When the operation lever 230 is rotated by 400, it rotates stably without being shaken.

On the other hand, the controller 340 installed inside the case 300 is made of a PCB board as described above. As shown in FIG. 5, the operating lever 230 is a control unit 340 made of a PCB board. It is installed to pass through the top and bottom.

Here, in the controller 340 made of the PCB board, the first position sensor 352 and the second position sensor 354 are installed to form an angle of 90 ° so as to be located outside the operating lever 230.

At this time, the first and second position sensors 352 and 354 are made of photo sensors, and a position detection protrusion 232 in the shape of "L" is formed on one side of the outer circumferential surface of the operating lever 230, so that the operating lever ( 230 is rotated, the first and second position sensors 352 and 354 detect the position detection protrusion 232 to detect the open/closed state of the intermediate valve 200.

In addition, a limit switch 356 may be further installed on one side of the upper surface of the control unit 340, and a pressing protrusion (not shown) is provided on one side of the outer circumferential surface of the operating lever 230 to correspond to the limit switch 356. By protruding, when the opening/closing member 210 is completely sealed, the pressing protrusion (not shown) operates the limit switch 356 so that the opening/closing state can be checked more accurately.

Although preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and the spirit of the present invention extends to those within the scope substantially equivalent to the embodiments of the present invention. Various modifications and implementations are possible by those skilled in the art to which the present invention pertains within the scope that does not deviate from the above.

The present invention relates to an automatic gas circuit breaker, and more particularly, can detect gas leaking between an intermediate valve and a gas device regardless of whether the intermediate valve is opened or closed, and detects gas leakage while the intermediate valve is open. It relates to an automatic gas circuit breaker capable of preventing accidents by automatically shutting off an intermediate valve.

100: connecting pipe 110: opening and closing member receiving portion
120: connector 200: intermediate valve
210: opening and closing member 220: connecting bar
230: operation lever 300: case
320: sensor connection hole 330: pressure sensor
340: control unit 350: display unit
360: coupling bracket 370: battery
400: driving unit 410: driving motor
420: drive bevel gear 430: driven bevel gear
500: gas supply pipe

Claims (9)

A connection pipe installed at an end of the gas supply pipe, an intermediate valve installed in the connection pipe, a case installed on one side of the connection pipe, and a case in which the operation lever of the intermediate valve is rotatably installed, and It is made of a driving unit installed to control the opening and closing of the intermediate valve by rotating the operating lever,
A pressure sensor for detecting the internal pressure of the output side of the connection pipe is installed on one side of the inside of the case,
A control unit is further provided inside the case, and the control unit determines whether gas leaks through pressure information detected by the pressure sensor,
The control unit divides the degree of reduction from the current pressure detected by the pressure sensor into two sections, and the first section is reduced when discharged through a fine gap formed in the hose pipe connecting the connection pipe or the connection pipe and the gas device. And, when the gas is used by the operation of the gas device, it is reduced, but divided into a second section that is reduced more than the reduction amount of the first section,
When a change occurs in the current pressure received by the pressure sensor in real time, the control unit determines that a gas device is used when the degree of reduction corresponds to the second section, and when the intermediate valve is closed, the Gas automatic circuit breaker, characterized in that for opening the intermediate valve.
delete delete According to claim 1,
When a change occurs in the current pressure received in real time from the pressure sensor, if the degree of reduction corresponds to the first section, the control unit determines that gas is leaking and issues a gas leak warning,
When the intermediate valve is in an open state, the automatic gas circuit breaker, characterized in that for closing the intermediate valve.
delete According to claim 1,
When a change occurs in the current pressure received in real time from the pressure sensor, when the pressure is high and the intermediate valve is open, the control unit judges that the use of the gas device has been stopped and closes the intermediate valve. Features gas automatic circuit breaker.
According to claim 1,
The intermediate valve includes an opening and closing member installed on one side of the inside of the connecting pipe;
The operating lever installed inside the case;
An automatic gas circuit breaker characterized in that the connecting bar is formed through the connection pipe, one end of which is connected to the opening and closing member and the other end is connected to the operating lever.
According to claim 7,
The driving unit includes a driven bevel gear formed on an outer circumferential surface of the operating lever;
A drive motor installed inside the case;
Automatic gas circuit breaker, characterized in that consisting of a drive bevel gear rotated by the drive motor but engaged with the driven bevel gear.
According to claim 7,
The opening and closing member is installed in the opening and closing member receiving portion formed inside the longitudinal end of the connecting pipe,
One end of the pipe connector is inserted into the end of the connection pipe to prevent the opening and closing member from leaving,
The gas automatic circuit breaker, characterized in that the other end of the pipe connector is connected to the gas supply pipe.

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