KR20020040128A - Intercepting device by watching gas fluid metering - Google Patents

Abstract

PURPOSE: A device for isolating gas by sensing flux is provided to improve safety of a gas isolator by detecting fuel amount while changing the flux. CONSTITUTION: A gas isolator by detecting flux comprises a flux measuring unit(1) generating flux signal by being mounted on a gas supplying main pipe; a flux state detecting unit(2) outputting a data signal by analyzing the flux signal of changed gas amount; a starting signal generator(5) outputting a starting signal while flowing flux in the flux measuring unit; a timer(6) detecting period while flowing the flux by inputting a signal of the starting signal generator; an apparatus registering unit(14) registering data according to various apparatus; a consumption amount detecting unit(3); an excess flux detecting unit(4); a limited condition unit(15) memorizing limited condition; a condition selecting unit(9) outputting a conditional signal by receiving date form the limited condition unit; and an abnormality deciding unit(10).

Description

Gas shutoff device by flow monitoring {INTERCEPTING DEVICE BY WATCHING GAS FLUID METERING}

The present invention relates to a gas shut-off device by monitoring the flow rate of a gas appliance, and more particularly, gas safety management in conjunction with a city gas and liquefied petroleum gas (LP gas) use mechanism to enable gas safety management. The present invention relates to a gas shutoff device by monitoring the flow rate of a gas appliance that can prevent explosion or fire accident due to gas leakage.

In general, gas accidents are caused by leakage of unburned city gas or liquefied petroleum gas (hereinafter referred to as gas). For example, gas leaks are caused by suspending rubber hoses for suicide purposes or opening gas service facilities without combustion, unexpected release of rubber hoses, cracks in aged gas supply hoses, and aging of valves.

Conventional gas-related safety devices include flame monitoring devices, oxygen deprivation devices and conduction safety devices in gas appliances, and gas supply facilities interlock with gas shutoff valves, gas alarms to detect leaking gas, and gas alarms to shut off the gas supply. A device, a device for monitoring the function of a gas alarm, a gas flow rate management device, an abnormal pressure monitoring device, an earthquake detection device, and a registered gas device registration device are used.

However, the gas-related stabilizer is composed of independent functions, so that the gas cannot be effectively used as a safety mechanism. For example, if there is a certain amount of gas leakage from the gas appliance's connection or gas appliance by moving the gas appliance, the overflow shutoff valve will not be activated, and in the gas flow rate sensing device, the gas flow rate will be similar to that of the gas appliance. Without blocking the gas alarm, the operation time of the alarm is generally delayed because the gas alarm is generally installed to maintain the distance from the gas appliance as much as possible in order to reduce the malfunction caused by the use of the gas appliance. This causes gas leakage for a certain period of time, which may cause a gas fire or gas explosion.

Moreover, alarms are more likely to malfunction due to a decrease in reliability over time, and when not interlocked with the shutoff device, it simply generates a beep, which will stop dangerous gas leaks if a person is not in a position to hear the beep. It becomes impossible and can develop by accident. In addition, due to the reduced reliability of the alarm, even if the gas concentration is below a certain level, the alarm is frequently turned off due to the frequent alarm sound.

The effective gas shutoff device disclosed recently is a device which detects the gas flow rate and detects the occurrence of an abnormal state and cuts off the supply of gas when the flow rate of the gas exceeds a predetermined total flow rate for a predetermined time interval. This device judges the flow of gas as an abnormal state and cuts off the gas flow when the gas flow rate is greatly increased than the predetermined flow rate. In addition, when the gas flow is continuously predicted when the gas flows continuously without changing the flow rate of the gas, an abnormal state is judged to block the gas flow.

Such a method is disclosed in Japanese Patent Laid-Open Nos. 63-101619 and 63-108118, and also in Korean Patent Publication Nos. 92-2744 and 97-7657. Recently, the problem of the gas shutoff device is that even if the gas leaks, if the flow rate is similar to the flow rate of the gas appliance, the gas flow is determined to be in a normal state and gas leakage cannot be stopped.

Although the gas leak alarm is used to detect the leaked gas in order to secure such disadvantages, the gas flow may not be blocked due to the reliability of the alarm and the delay of the detection time. There is a possibility. In addition, the domestic gas can be used in excess of the time normally used for cooking for a long time can not prevent the malfunction of the gas shutoff device.

In addition, the gas flow rate of the gas meta is changed in conjunction with the change in the gas use amount of the gas combustion mechanism in the general home. That is, when the flow rate is changed by extinguishing the gas appliance or by ignition, the corresponding flow rate is generated in the gas meter. The gas shutoff device developed and used recently detects only one flow rate of the gas meter among the two flow fluctuations and compares it with the consumption pattern (maximum consumption, normal continuous use time, etc.) of the gas appliance. It is composed of logic to determine the state, there is a problem in that a logic error because it does not directly detect the combustion amount of the gas appliance.

The present invention has been invented to solve the above problems, the technical problem of the present invention, when the flow rate changes in the gas meter, the flow of gas by directly detecting the combustion amount of some or all of the gas appliances used Since the logic is configured to determine whether the normal state or abnormal state, it is an object to eliminate the error of determining the abnormal gas flow as a normal gas flow in the conventional blocking state.

For this purpose, the present invention is a flow rate measuring means for detecting the flow rate of the gas supplied to the home house is attached to the main pipe which is supplied to the gas appliance to the home house and outputs a flow rate signal corresponding thereto, A flow state detection means for analyzing a signal of a gas flow rate and a fluctuating gas flow rate based on the output flow rate signal and transmitting the flow rate in real time, and a start signal for outputting a predetermined start signal when the flow rate flows from the flow state detection means; A generator, a timer for measuring a predetermined time interval when the flow rate detection is measured by the flow rate measuring means based on the signal output from the start signal generator, mechanism registration means for registering the gas mechanism externally, and the mechanism Receives the signal output from the registration means in wired or wireless form and consumes gas for each gas appliance currently used Consumption flow rate detecting means for detecting the gas flow rate, and the amount of gas flowing through the gas flow meter more than the current gas consumption of the gas burner registered using the respective signals outputted from the consumption flow rate detecting means and the flow rate state detecting means. Excess flow rate detection means for calculating the quantity, limit condition means for data-saving and storing the limit conditions of the gas appliance not registered in the device registration means, and data received from the limit condition means are inputted to receive a predetermined condition signal. An abnormality judging means for judging whether there is an abnormality in the gas use state by receiving a condition selecting means for outputting, a condition signal output from the condition selecting means and an excess flow signal output from the excess flow detecting means, and from the abnormal judging means Warning means to warn by the signal output, and to block the flow of gas Provided is a gas shutoff device by flow rate monitoring, which comprises a shutoff means and an external input means connected to the shutoff means and capable of inputting a control signal in order to shut off the flow of gas urgently.

1 is a block diagram showing the configuration of the present invention.

<Explanation of symbols for main parts of drawing>

1: flow measurement means 2: flow state detection means

3: consumption flow detection means 4: excess flow detection means

5: start signal generator 6: timer

7: Continuous flow rate registration means 8: Limit condition storage means

9: condition selection means 10: abnormal judgment means

11: warning means 12: blocking means

13: external input means 14: instrument registration means

15: limit condition means

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

As shown in Fig. 1, the flow rate measuring means (1) attached to the main pipe of the gas supplied to the gas appliances of the home house detects the flow rate of the gas supplied to the home house and outputs a flow rate signal corresponding thereto, and the flow rate measurement A flow state detection means (2) for analyzing a signal of a gas flow rate and a fluctuating gas flow rate based on a flow rate signal output from the means (1), and outputting a data signal according to the flow rate in real time; The start signal generator 5 which outputs a predetermined start signal when the flow rate flows in the c) and a predetermined time interval when an input signal is received from the start signal generator 5 and the flow rate flows from the flow rate measuring means 1. A timer 6, a mechanism registration means 14 for registering data according to the type of the gas appliance, and a gas consumption signal provided by a gas burner, ie, a boiler, in general, is wired or Each of the flow rate detecting means 3 inputted in the form of a line to detect the gas consumption of the gas appliance currently using gas, and input from the consumption flow rate detecting means 3 and the flow rate state detecting means 2, respectively. The excess flow rate detection means 4 for calculating the excess flow rate of the gas currently used on the basis of the signal and the instrument registration means 14 which cannot directly input the gas consumption of the gas burner by wire or wirelessly are not registered. Limit condition means 15 for registering the normal flow rate of the gas appliance and storing the limit condition of the gas appliance as data, and condition selection means for receiving data output from the limit condition means 15 and outputting a condition signal. (9) and the abnormal condition of the gas use state by receiving the condition signal outputted from the condition selection means 9 and the excess flow signal outputted from the excess flow detection means 4; The abnormal determination means 10 for determining the presence, the warning means 11 for warning the abnormal state by the signal output from the abnormal determination means 10, and the blocking means 12 for blocking the flow of gas Is done.

And the limit condition means (15) is a continuous flow rate registration means (7) for storing the basic data for distinguishing the state of using the gas for a long time in the gas appliances not registered and the state of gas accidents due to extinction forgetting And limit condition storage means (8) for storing data related to the fluctuation range and time of the flow rate, such as the maximum gas use time, the minimum gas use flow rate, and the like of an unregistered gas combustor.

And the blocking means 12 is connected to the external input means 13 to prevent the accident by blocking the flow of gas urgently.

Here, the continuous flow rate registration means 7 is a means for encompassing the various types of gas use of the gas appliance, and indicates the flow rate continuously used. For example, when a pilot flame or the like that uses a small amount of gas for a long time is not registered in the instrument registration means 14, a predetermined flow rate range is designated to prevent malfunctions for blocking continuous use time. Therefore, this continuous flow rate registration means 7 has basic data for distinguishing between gas use for a long time and possible gas accidents caused by extinguishing oblivion.

In the limit condition storing means 8, the maximum gas use time, the minimum gas flow rate, the maximum gas flow rate, and the flow rate by thermal control are taken into consideration in consideration of the characteristics of the gas combustion mechanism that is not registered in the instrument registration means 14. It stores data related to flow rate and time such as fluctuation range.

The condition selection means 9 selects the conditions required by the abnormality determination means 10 from the continuous flow rate registration means 7 and the limit condition storage means 8 and provides the data to the abnormality determination means 10. Logic judgment can be made.

Hereinafter, the operation of the present invention made of the above configuration.

First, the flow rate measuring means 1 is attached to the main pipe that the gas is supplied to the home house detects the flow rate of the gas supplied to the home house, and transmits a flow rate signal corresponding thereto to the flow state detection means 2. The flow state detection means 2 then analyzes signals of gas flow rate and fluctuating gas flow rate based on the signal input from the flow rate measurement means 1 and transmits the signal to the excess flow rate detection means 4 in real time. do.

In this case, the excess flow rate detecting means 4 calculates and processes the signals inputted from the flow rate state detecting means 2, the consumption flow rate detecting means 3, and the timer 6, and thus changes in flow rate, continuous gas consumption time, and gas consumption. Detects excess flow in the gas meter for the total amount of gas. That is, when the flow rate of the gas fluctuates, the excess flow rate detecting means 4 checks the gas consumption of the gas appliance from the consumption flow rate detecting means 3, calculates the excess flow rate, and then signals the abnormality determining means 10. In addition, if the change in the gas consumption of the combustion mechanism is input to the consumption flow rate detecting means 3, the flow rate of the gas meter is checked from the flow rate state detecting means 2, and then the abnormality determining means 10 ).

Therefore, when the abnormality determining means 10 detects an abnormality in the gas flow, the predetermined determining signal is applied to the blocking means 12 so that the blocking means 12 blocks the flow path of the gas, thereby causing a defect in the gas appliance and Prevent gas leaks due to faults in the facility.

In addition, when the abnormality determination means 10 detects the abnormal state of the flow of gas, but the risk of an accident is not large, a warning signal may be applied to the warning means 11 to warn the danger.

On the other hand, in case of excessive supply of abnormal flow rate, that is, for the purpose of suicide, cutting rubber hose, opening gas facility without combustion, leaving rubber hose to supply gas, cracking of aging gas supply hose and aging of valve If gas is leaking, the signal accordingly is detected by the excess flow detection means 4. Therefore, the excess flow detection means 4 applies a predetermined detection signal to the abnormality determination means 10, so that the abnormality determination means 10 is the maximum gas flow rate and continuous use time applied from the condition selection means 9. By applying a signal according to a gas leakage abnormality state based on a signal such as, to the blocking means 12, it is possible to prevent the accident of gas leakage by the blocking operation of the blocking means 12.

The condition selection means 9 has limitations such as the maximum gas use time, the minimum gas flow rate, the maximum gas flow rate, and the fluctuation range of the gas flow rate due to thermal control, which can be output to the outside. By receiving the input of the condition means 15, a condition in consideration of simultaneous use of several combustors, etc. is selected to apply a signal to the abnormality determination means 10.

In this case, the timer 6 receives a signal input from the start signal generator 5 and measures a predetermined time interval when the flow of the flow rate is detected from the flow rate measuring means 1 and applies it to the excess flow rate detecting means 4. . Therefore, the excess flow detection means 4 recognizes that the combustor registered in the current instrument registration means 14 is abnormally used for a long time by an appropriate arithmetic operation by means of the input signal and signals the abnormal determination means 10. The abnormality determining means 1 applies a signal to the warning means 11 to warn the gas user.

Therefore, it is possible to prevent fire accidents due to overheating by forgetting extinguishing during use of gas appliances. That is, when the combustor is being used continuously for 4 hours or 10 hours, the excess gas use condition is recognized by the excess flow rate detecting means 4 and applied to the abnormality determining means 10. Therefore, by warning the gas user by applying a signal to the warning means 11 in the abnormal determination means 10 to prevent a fire accident due to overheating.

Here, the mechanism registration means 14 is a means for registering the gas mechanism from the outside, and by using the consumption flow rate detection means 3 determines what mechanism is currently using gas and the current gas consumption amount. And this consumption flow rate detection means 3 is possible by receiving a signal from a gas appliance by wire or wirelessly.

On the other hand, the blocking means 12 is connected to the external input means 13, the external input means 13 to prevent the accident by blocking the flow of gas urgently, for example, the concentration of carbon monoxide in the room When the gas exceeds the reference value, the gas supply is supplied at an abnormal pressure, or a fire occurs, a predetermined control signal is applied to the blocking means 12. Therefore, the secondary supply due to the use of gas can be prevented by blocking the main supply of the gas supply by the control signal of the blocking means 12.

On the other hand, the detailed description of the present invention is in a form for more preferably explaining the characteristics of the present invention, the configuration and detailed combinations thereof, as long as the basic concept does not change as in the claims can be changed.

The gas shutoff device according to the present invention has a logic of directly detecting the combustion amount of a gas appliance used when a flow rate change occurs in a gas meter and determining whether the flow of gas is in a normal state or an abnormal state. There is an effect that can rule out judgment errors and improve the stability of the blocking device.

Claims (3)

In the gas shutoff device that monitors the gas outflow of the gas mechanism to control the gas supply, A flow rate measuring means (1) for measuring a flow rate of gas supplied to the gas supply pipe of the gas apparatus and generating a corresponding flow signal; A flow state detection means (2) for analyzing the signal of the gas fluctuation flow rate based on the flow rate signal output from the flow rate measuring means (1) and outputting the data signal accordingly; A start signal generator 5 for outputting a predetermined start signal when the flow rate flows from the flow rate measuring means 1, A timer 6 for measuring a predetermined time interval when a signal from the start signal generator 5 is input and flow rate flows from the flow rate measuring means 1; Mechanism registration means (14) for registering data according to the type of gas appliances that can be used; Consumption flow rate detection means (3) for receiving a signal output from the device registration means (14) in a wired or wireless form to detect the current gas consumption of the gas appliance; Detects and calculates each signal output from the consumption flow rate detecting means 3 and the flow rate state detecting means 2, and based on the calculated result, the current gas consumption of the gas appliance registered in the instrument registering means 14 Excess flow rate detecting means (4) for detecting the excess supply when the amount of gas flowing through the gas flowmeter is higher; Limit condition means (15) for registering a normal use flow rate of gas appliances not registered in the device registration means (14) and storing the limit conditions as data; Condition selection means 9 for receiving data output from the limit condition means 15 and outputting a condition signal; An abnormality determination means 10 which receives the condition signal output from the condition selection means 9 and the excess flow signal output from the excess flow detection means 4 and determines whether there is an abnormality in the gas use state; Warning means 11 for warning the abnormal state by a signal of the presence or absence of abnormal determination output from the abnormal determination means 10, Gas blocking device according to the flow rate monitoring, characterized in that consisting of a blocking means for blocking the flow of gas by the signal output from the abnormal determination means (10). The method according to claim 1, wherein the limit condition means (15) Continuous flow rate registration means (7) for storing the basic data for distinguishing the state of using the gas for a long time among the gas burner not registered in the instrument registration means 14 and the possible gas accident due to extinction forgetting and , A gas shutoff apparatus according to the flow rate monitoring, characterized in that it comprises a limit condition storing means (8) for storing the data related to the fluctuation range and time of the gas flow rate including the maximum time gas use of the gas appliance and the minimum flow rate. 2. The excess flow detection means (4) according to claim 1, wherein the excess flow detection means (4) compares the total gas flow rate with the current gas consumption of the registered gas appliance and compares the difference flow rate or the maximum total gas of the combustor registered with the appliance registration means (14). Gas blocking device according to the flow rate monitoring, characterized in that to provide the abnormality determining means (10) and time and flow rate information exceeded.