JPS63180800A - Gas cut-off device - Google Patents

Abstract

PURPOSE:To get a gas cut-off device which is safer than a current one, by automati cally measuring the flow pattern of gas actually used at each home, for a preset period of time, by a temperature deciding signal of a temperature condition deciding part, and at the same time, resetting the deciding condition which suits the real state of each home. CONSTITUTION:A gas proper consuming condition in the first year, is stored in a memory storage part 17. After the next year, a first stage condition of a first stage condition setting part 7 and the gas proper consuming condition, which is stored in the gas proper consuming condition memory storage part 17 according to the tempera ture deciding signal of the first year, are compared with each other by the temperature deciding signal, for setting the proper consuming condition for the actually consumed gas, at a gas proper consuming condition setting part 18, and as the same as the first year, a signal from a consuming situation detecting part 6 and the gas proper consuming condition set at the gas proper consuming condition setting part are com pared with each other, for watching abnormality in the flow, at an abnormality decid ing part 9. Then, when it is decided that the flow is abnormal, a closing signal is output from a closing signal output part 10 toward a cut-off means 4, for cutting-off a gas route.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention automatically shuts off the gas passage in the event of an abnormality, thereby preventing explosions and poisoning caused by city gas, propane gas, etc. This relates to a gas cutoff device.

2. Description of the Related Art An example of a conventional gas cutoff device will be described with reference to FIGS. 2 and 3. As shown in FIG. 2, a gas meter 2, a flow rate measuring means 3 for emitting a signal according to the amount of gas passing through the gas meter, and a shutting means 4 for stopping the gas supply are provided in the middle of the gas supply path 1. The device is equipped with a control section 5 which judges the usage state based on the flow rate signal of the measuring means 3, determines that there is an abnormality if the gas usage conditions deviate from preset and stored proper gas usage conditions, and issues a closing signal to the shutoff means 4.

An example of the configuration of this conventional control section is shown in FIG. Components with the same reference numerals as in FIG. 2 have the same functions. The control unit 5 includes a usage status detection unit 6 that inputs the flow rate signal from the aforementioned flow rate measuring means 3 and detects the gas usage status, and an initial condition setting unit that sets appropriate usage conditions in advance according to the number of the gas meter. section 7, a gas appropriate usage condition setting section 8 which stores the setting contents and sends a reference signal to the abnormality determination section 9, and a closing signal output which issues a closing signal to the shutoff means 4 in response to the signal from the abnormality determination section 9. It consists of a section 10.

Here, the appropriate usage conditions include items such as the total flow rate, individual maximum flow rate, and safe continuous usage time set according to the capacity of each gas meter. The total flow rate is the total flow rate of gas that passes through the gas meter within a predetermined measurement period.If the current total flow rate exceeds the initially set predetermined value, such as when a gas hose is disconnected or the combustion of a gas appliance goes out, the shutoff means is activated. let

The individual maximum flow rate is calculated by detecting changes in the gas flow rate at each predetermined measurement period, identifying how many types of gas appliances are currently in use and how much gas each one consumes, and calculating the maximum gas consumption among them. When the amount exceeds a set value, a closing signal is output to the shut-off means to prevent gas leaks such as cracks in the gas hose or combustion going out when the gas valve is half-open. In addition, the safe continuous use time is the amount of time a gas appliance can be used continuously for each range based on statistical data of the time a gas appliance in a certain combustion range is continuously used. when the data from 6 exceeds the set time, sends an activation signal to the cutoff means 4;
This ensures safety even when you forget to turn off gas appliances.

Problems to be Solved by the Invention However, with the above configuration, the proper gas usage conditions are uniformly determined only by the initial value depending on the capacity of the gas meter installed in the gas pipe, so There was a problem in that it was not possible to appropriately satisfy all special conditions, the presence or absence of gas appliances used, the usage conditions, etc. depending on the season.

The present invention solves such conventional problems by automatically measuring the flow rate pattern of gas actually used in each household for a predetermined period based on the temperature judgment signal of the temperature condition judgment unit, and at the same time, automatically measuring the flow rate pattern of gas actually used in each household for a predetermined period. By resetting the judgment conditions, a safer gas cutoff device can be provided. In addition, it is determined whether the temperature obtained by the temperature detection unit satisfies a predetermined condition, and if it does, it outputs a temperature judgment signal 61 me/, which measures the flow rate and N6 turn at that time. At the same time, judgment conditions suitable for the season can be set from next year onwards, and a gas cutoff device with even higher safety can be provided.

Means for Solving the Problems In order to solve the above problems, the gas cutoff device of the present invention has the following features:
A flow rate measuring means provided in the gas supply path and emitting a signal according to the amount of gas passing through; a usage state detection section detecting the gas usage state based on the flow rate signal sent from the flow rate measuring means; and a usage state detection section that detects the temperature of the outside air. and a temperature condition determination unit that determines whether the temperature obtained by the temperature detection means satisfies a predetermined condition and outputs a temperature determination signal according to the detected temperature if the temperature is satisfied. a timer activation determination unit that receives the temperature determination signal output from the temperature condition determination unit and outputs a timer activation signal only for the first year; a timer unit that counts a predetermined time based on the timer activation signal; and the timer unit. a usage status storage unit that stores the gas usage status according to a signal from the usage status detection unit during operation; and a gas appropriate usage condition change storage unit that changes and stores gas usage conditions as appropriate gas usage conditions according to the contents of the usage status storage unit; , a gas appropriate usage condition storage unit that stores the stored contents of the gas appropriate usage condition change storage unit in a predetermined storage unit according to the temperature determination signal; and an initial condition that sets the gas appropriate usage conditions as an initial value in advance. The setting unit compares the initial conditions of the initial condition setting unit with the appropriate gas usage conditions stored in the gas appropriate usage condition storage unit in response to the same temperature determination signal in the first year according to the temperature determination signal. a gas appropriate usage condition setting section that sets appropriate gas usage conditions to be used; and an abnormality determination section that compares the signal of the usage state detection section with the gas appropriate usage conditions of the gas appropriate usage condition setting section to determine the presence or absence of an abnormality. and a closing signal output unit that outputs a closing signal when the abnormality determining unit determines that there is an abnormality.
and a shutoff means for shutting off the gas passage in response to a closing signal from the closing signal output section.

Operation With the above-described configuration, when the present invention is installed in each home, flow rate monitoring is started under the conditions set in the initial condition setting section, and then the outside temperature is detected, and if the predetermined conditions are met, the temperature conditions are changed. The determination unit outputs a temperature determination signal, and in response to the temperature determination signal, the timer activation determination unit outputs a timer activation signal only for the first year, the timer unit starts counting, and at the same time the usage status is changed. The gas usage pattern during the timer count period is measured by the operation of the storage unit. In other words, during this period, the actual measured values such as the total flow rate, individual maximum flow rate, safe continuous use time, etc. mentioned above are updated, and at the same time as the timer count ends, the measured data is sent to the gas proper usage condition change storage unit, and the proper gas usage conditions are changed. It is stored as usage condition data. Then, the gas is stored in a predetermined storage section in the gas appropriate usage condition storage section in accordance with the temperature determination signal.

Initial conditions are set in the first year of installation, but from the second year onward, the data in the gas proper usage condition memory storage unit and the initial condition data stored in response to the same temperature judgment signal in the first year are determined by the temperature judgment signal. 9 pages/ predetermined appropriate gas usage conditions will be set.

EXAMPLE Hereinafter, a gas cutoff device according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a gas cutoff device in one embodiment of the present invention. In FIG. 1, reference numeral 3 indicates a flow rate measuring means that emits a signal according to the flow rate of gas passing through the gas meter; 6 indicates a usage state detection unit that inputs the flow rate signal from the flow rate measuring means 3 and detects the usage state of the gas; 11 12 is a temperature detection means for detecting the temperature of the outside air; 12 is a temperature condition determination unit that determines whether or not the temperature obtained by the temperature detection means satisfies a predetermined condition; and if it does, outputs a temperature determination signal; 13; 14 is a timer activation determination unit that receives the temperature determination signal output from the temperature condition determination unit and outputs a timer activation signal only for the first year; 14 is a timer unit that counts a predetermined time based on the timer activation signal; 15 is a timer A usage status storage unit 14 stores the gas usage status according to a signal from the usage status detection unit 6 during operation of the usage status storage unit 15; Gas appropriate usage condition change storage section 17 stores the stored contents of gas appropriate usage condition change storage section 16 in a predetermined storage storage section in accordance with the temperature determination signal;
18 is an initial condition setting section that sets gas proper usage conditions as an initial value in advance, and 18 is a temperature judgment signal from the next year onwards to set the initial conditions of the initial condition setting section 7 and the first year in the gas proper usage conditions memory storage section 16. A gas proper use condition setting section compares the stored gas proper use conditions according to the same temperature judgment signal and sets the gas proper use conditions to be actually used; 9 indicates the signal of the use state detection section 6 and the gas proper use conditions; Setting section 17
10 is a closing signal output section that outputs a closing signal based on the abnormality signal from the abnormality determining section 9; 4 is a closing signal output section that outputs a closing signal from the closing signal output section 10; This is a shutoff means that shuts off the gas passage in response to a closing signal.

In the gas cutoff device configured as above, when this gas cutoff device is installed in each household, the first year is 11 l・-
7, the initial conditions set in the initial condition setting unit 7 are set in the gas proper usage condition setting unit 18, and the abnormality determination unit 9 compares the signal from the usage state detection unit 6 with the initial conditions to monitor the presence or absence of a flow rate abnormality. do. If it is determined that there is an abnormality, a closing signal is output from the closing signal output section 10 to the shutting means 4 to shut off the gas passage. In the gas proper usage condition setting unit 18, the usage conditions stored in the gas proper usage condition storage unit 17 are compared with the initial conditions, and the smaller value is set. Since the maximum value is stored, the initial conditions are always set in the gas appropriate usage condition setting section 18.

In addition, in the first year, after installing this gas cutoff device, the outside temperature is detected by the temperature detection means 11, and the outside temperature is detected under a predetermined condition (here, the temperature condition is, for example, when the outside temperature at a certain time of the day is a predetermined temperature). If it is satisfied, a temperature judgment signal is output, and upon receiving the temperature judgment signal, the timer start judgment section outputs a timer start signal only in the first year. . The timer unit 11 is activated by the timer activation signal and starts counting for a predetermined period, and at the same time, the usage status storage unit 14 records the gas usage pattern, that is, the total flow rate, individual maximum flow rate, and safe continuous usage time from the usage status detection unit 6. When the timer count for a predetermined period ends, the data of each actually measured gas usage pattern is changed to the appropriate usage condition and stored in the gas appropriate usage condition change storage section 16. Then, the memory contents of the gas proper usage condition change storage unit are stored in the timer unit 1.
The gas is stored in a predetermined storage section in the gas appropriate usage condition storage section 17 in accordance with the temperature determination signal when the gas gas is activated.

From the next year onwards, the temperature determination signal is used to store the initial conditions in the initial condition setting section 7 and the same temperature determination signal for the first year in the gas proper usage condition storage section 17 in the gas appropriate usage condition setting section 1st. The proper gas usage conditions to be actually used are set by comparing the proper gas usage conditions that have been set, and as in the first year, the abnormality judgment section 9 compares the signal from the usage state detection section 6 with the gas proper usage conditions setting section. The appropriate gas usage conditions are compared and the presence or absence of flow rate abnormality is monitored. If it is determined that there is an abnormality, a closing signal is output from the closing signal output section 10 to the shutting means 4 to shut off the gas passage.

For example, if you change the temperature conditions to summer temperature (TH) and winter temperature (T
It is assumed that the settings are made using two patterns (L). If the first temperature determination signal after the installation of the gas cutoff device is output at the time when winter changes to summer, the outside temperature has become summer temperature (H), and the gas proper usage condition setting section 1B
In this case, the proper gas use condition at summer temperature is stored in the gas proper use condition storage unit 17.

The usage conditions are compared with the initial conditions in the initial condition setting unit 7, and the smaller one is set as the appropriate gas usage condition in the gas appropriate usage condition setting unit 17. However, in the first year, the smaller one is set in the gas appropriate usage condition storage unit 17. Since the maximum value is stored, the initial conditions are set in the gas appropriate usage condition setting section 18. Further, after the timer count ends, the actual gas usage pattern during the summer period obtained by the usage state storage unit 15 while the timer unit 14 is operating is changed and stored as the gas usage condition by the gas usage condition change storage unit 16, and the gas usage pattern is changed and stored as the gas usage condition by the gas usage condition change storage unit 16. The usage condition record 14 page stores the storage part number in the storage part 17 at the time of summer temperature (TH).

Next, if the second temperature determination signal is output at a time when summer changes to winter, the outside temperature has become the winter temperature (TL), and the appropriate gas usage condition setting section 18 has set the appropriate gas usage conditions. Compare the appropriate gas usage conditions at the winter temperature in the storage storage unit 17 with the initial conditions in the initial condition setting unit 7, and set the smaller one as the appropriate gas usage condition in the gas appropriate usage condition setting unit. In the first year, the initial conditions are set in the gas proper usage condition storage section 17 (the maximum value is stored, so the initial conditions are set in the gas proper usage condition setting section 18. After the timer count ends, the actually measured gas usage pattern for the winter period stored in the usage state storage unit 15 is changed and stored as the appropriate gas usage condition from the gas appropriate usage condition change storage unit 161, and then stored in the gas usage condition storage unit 17. It is stored in the storage section at winter temperature (TL).

From next year onward, when the temperature judgment signal is output, ■summer temperature (
In the case of TH), the appropriate gas usage conditions setting unit 1815 vane sets the appropriate usage conditions for the gas stored in the first year in the gas appropriate usage conditions storage unit 17 at the summer temperature and the initial condition setting unit 7.
The smaller one is set as the gas proper usage condition, and as in the first year, the abnormality judgment unit 9 sets the signal from the usage status detection unit 6 and the gas proper usage condition setting unit on the first day. Proper gas usage is compared and the presence or absence of flow rate abnormalities is monitored.

If it is determined that there is an abnormality, a closing signal is output from the closing signal output section 10 to the blocking means 4 to block the passage. ■In the case of winter temperature (TL), the appropriate gas usage conditions setting section 18 selects the appropriate gas usage conditions for the winter temperature stored in the first year in the gas appropriate usage conditions storage section 17 and the initial state of the initial condition setting section 7. The conditions are compared, and the smaller one is set as the proper gas usage condition, and the following is monitored for presence or absence of flow rate abnormalities due to summer temperatures.

In other words, this gas cutoff device detects the temperature of the outside air,
By determining whether the detected temperature satisfies predetermined temperature conditions, and if so, by issuing a predetermined temperature judgment signal, the gas usage conditions that are most suitable for each household at that time are automatically set. , gas usage status will be monitored.

In addition, in the example, the temperature was divided into two, summer temperature and winter temperature (set temperature is set in two patterns). By increasing the number of storage sections that correspond to the number of temperature settings in each section, it is possible to set gas usage conditions that are more appropriate for each season (time of year), making it possible to create a more appropriate and safe gas cutoff device. .

Effects of the Invention As described above, the gas cutoff device of the present invention includes a conventional gas cutoff device including a temperature detection means for detecting the outside air temperature and a determination as to whether or not the temperature obtained by the temperature detection means satisfies a predetermined condition. a temperature condition determination section that outputs a temperature determination signal in accordance with the detected temperature if the condition is satisfied; a timer section that counts a predetermined time only in the first year based on the temperature determination signal; and a usage state detection section when the timer section is in operation. a usage status storage unit that stores the gas usage status according to a signal from the gas usage status storage unit;
=-.

a gas appropriate usage condition change storage unit that changes and stores the gas usage conditions; and a gas appropriate usage condition storage unit that stores the stored contents of the gas appropriate usage condition change storage unit in a predetermined storage unit in accordance with the temperature determination signal. and an initial condition setting section that sets gas proper usage conditions as initial values in advance; and an initial condition setting section that sets the initial conditions of the initial condition setting section and the same temperature determination signal for the first year of the gas proper usage conditions storage section based on the temperature determination signal. By providing a gas proper usage condition setting section that compares the stored gas proper usage conditions and sets the gas proper usage conditions to be used, it is possible to simply set the gas meter capacity (number).
- Compared to setting conditions that have been determined by law, we actually measure the actual gas usage patterns of each household in each season, and calculate the season (season) of the year based on the gas usage pattern for the same period in the first year. ), the gas usage conditions are set every year under the optimal gas usage conditions for each household, and it is possible to monitor the gas usage status and determine abnormalities.In the event of an abnormality, a shutoff means is activated to shut off the gas. Since the supply is stopped, dangerous gases such as gas explosions and gas poisoning 1 B =
−; Safety in preventing accidents can be further increased.

In addition, regarding the setting of gas proper usage conditions, a temperature judgment signal is output according to the conditions set in the temperature condition judgment section.
As a result, each household is automatically set to appropriate gas usage conditions that match the usage period.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a gas cutoff device according to an embodiment of the present invention, FIG. 2 is a block diagram of a conventional gas cutoff device, and FIG. 3 is a block diagram of a conventional gas cutoff device. 11...Temperature detection means, 12...Temperature condition determination unit, 13...Timer activation determination unit, 1
4...Timer unit, 15...Usage status storage unit, 16...Gas proper usage condition change storage unit, 17...Gas proper usage condition memory storage Part, 18
・・・・・・Gas proper usage condition setting section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure/, 9 10 4 5 Rough volume, turbidity, stool condition J! Normally closed signal
Appraiser role a [I Judgment capital Output section Means 3 8. ．． -E ka, e
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Tea Igyu gas regular delivery & f beef record storage department ry Figure 2 Figure 3 5 Ya 11 Wholesale capital

Claims (1)

[Claims] A flow rate measuring means provided in the gas supply path and emitting a signal according to the amount of gas passing through; a usage state detection section detecting the gas usage state based on the flow rate signal sent from the flow rate measuring means; and a usage state detection section that detects the temperature of the outside air. and a temperature condition determination unit that determines whether the temperature obtained by the temperature detection means satisfies a predetermined condition and outputs a temperature determination signal according to the detected temperature if the temperature is satisfied. a timer activation determination unit that receives the temperature determination signal output from the temperature condition determination unit and outputs a timer activation signal only for the first year; a timer unit that counts a predetermined time based on the timer activation signal; and the timer unit. a usage state storage unit that stores the gas usage state according to a signal from the usage state detection unit during operation; and a gas proper usage condition change storage unit that changes and stores gas usage conditions as proper gas usage conditions according to the contents of the usage state storage unit. a gas appropriate usage condition storage unit that stores the stored contents of the gas appropriate usage condition change storage unit in a predetermined storage unit according to the temperature determination signal; and an initialization unit that sets the gas appropriate usage conditions as an initial value in advance. a condition setting section;
From the next year onwards, the initial conditions in the initial condition setting section are compared with the appropriate gas usage conditions stored in the gas appropriate usage condition storage section in accordance with the temperature determination signal in the first year, and the gas is used. a gas appropriate usage condition setting section that sets gas appropriate usage conditions; and an abnormality determination section that compares the signal of the usage state detection section with the gas appropriate usage conditions of the gas appropriate usage condition setting section to determine the presence or absence of an abnormality. A gas shutoff device comprising: a closing signal output section that outputs a closing signal when the abnormality determining section determines that there is an abnormality; and a shutoff means that shuts off a gas passage in response to the closing signal from the closing signal output section.