CN210293348U

CN210293348U - Automatic alarm Internet of things gas meter

Info

Publication number: CN210293348U
Application number: CN201921582782.9U
Authority: CN
Inventors: 周忠柱; 白开云; 黎志锋
Original assignee: Zhongran Huishenghuo E Commerce Co ltd
Current assignee: Zhongran Huishenghuo E Commerce Co ltd
Priority date: 2019-09-21
Filing date: 2019-09-21
Publication date: 2020-04-10
Anticipated expiration: 2029-09-21

Abstract

The utility model relates to an automatic alarm thing networking gas table, including gas meter case body, the shell body upper surface is provided with gas import and gas export, gas import on fixed mounting have a gas solenoid valve, install safety arrangement on gas meter case body, safety arrangement including detection device, the valve headstock gear of control gas solenoid valve of gas content in the detection air, the alarm device who is used for sending alarm signal, the valve headstock gear includes control circuit and response circuit, when gas content to the setting value in detection device detects the room air, output signal V1, control circuit is when receiving signal V1, output signal V2, response circuit controls the gas solenoid valve and closes after receiving signal V2, alarm device is after receiving signal V2, sends alarm signal. When the gas concentration reaches the warning value, people and workers can be reminded, the valve is cut off in time, and the maintenance is carried out.

Description

Automatic alarm Internet of things gas meter

Technical Field

The utility model belongs to the technical field of the technique of gas table and specifically relates to an automatic alarm thing networking gas table is related to.

Background

With the improvement of living standard and the enhancement of environmental protection consciousness at present, the fuel for daily cooking of people is changed from the conventional energy sources such as firewood, coal and the like into the clean energy sources such as natural gas, coal gas and the like. In the process of gas entering a household, a gas meter is often installed on a household pipeline, so that users using the gas can conveniently know the used gas, and the payment is convenient according to the cubic meter consumed in each month. At present, the internet of things is gradually applied to an intelligent gas meter, a system solution of intelligent management and control of public resources is provided for a gas operator through a mobile cellular network, and five management and service functions of online monitoring, remote control, safety precaution, statistical reporting and intelligent charging can be realized. The functions of mobile phone payment, on-line gas inquiry and valve control are provided for the terminal user.

However, in the installation and use process of the existing internet of things gas meter, workers are required to detect the safety of gas regularly. When the gas leakage occurs, people are often not easy to perceive the gas leakage, and when the gas concentration reaches the degree capable of being found by people, the gas concentration is late, users and workers cannot be timely and effectively reminded, and people cannot timely control dangerous situations.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art existence, the utility model aims at providing an automatic alarm thing networking gas table, it can remind resident and staff when detecting gas concentration and reach the alert value, in time cut off the valve and overhaul.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an automatic alarm thing networking gas table, includes gas meter case body, and the shell body upper surface is provided with gas import and gas export, gas import on fixed mounting have a gas solenoid valve, install safety arrangement on gas meter case body, safety arrangement including detection device, the valve headstock gear of control gas solenoid valve of gas content in the detection air, an alarm device for sending alarm signal, the valve headstock gear includes control circuit and response circuit, when gas content to the setting value in detection device detects the indoor air, output signal V1, control circuit is when receiving signal V1, output signal V2, response circuit controls the gas solenoid valve and closes after receiving signal V2, alarm device sends alarm signal after receiving signal V2.

By adopting the technical scheme, when gas leakage occurs, the gas content in the air around the gas meter gradually rises, when the gas content rises and reaches a set value, the detection device sends out a signal V1, the control circuit outputs a signal V2 when receiving a signal V1, and the alarm device sends out an alarm signal after receiving a signal V2, so that people can be reminded in time, and people can control dangerous situations in time. The response circuit controls the gas electromagnetic valve to be closed after receiving the signal V2, and if the gas leakage is caused by cracks in a pipeline behind the gas meter and the gas meter, the gas inlet can be closed, so that the gas can not continuously pass through the gas meter, and the effect of controlling dangerous situations is achieved.

The utility model discloses further set up to: the detection device comprises a gas alarm which comprises a QM-N10 gas-sensitive semiconductor sensor and a heating wire, wherein the heating wire is arranged in the QM-N10 gas-sensitive semiconductor sensor.

By adopting the technical scheme, the QM-N10 gas-sensitive semiconductor sensor can effectively and accurately measure the content of indoor fuel gas, and dust and oil stains attached to the QM-N10 gas-sensitive semiconductor sensor can be burnt off by the heating wire in detection, so that the adsorption of gas is accelerated, and the measurement is more accurate.

The utility model discloses further set up to: the control circuit comprises a unidirectional thyristor SCR, the anode of the unidirectional thyristor SCR is coupled with the anode of the power supply, the cathode of the unidirectional thyristor SCR is coupled with the cathode of the power supply, one end of the QM-N10 gas-sensitive semiconductor sensor is coupled with the anode of the power supply, the other end of the QM-N10 gas-sensitive semiconductor sensor is coupled with the cathode of the power supply, and the control electrode of the unidirectional thyristor SCR is coupled with a connection point between the QM-N10 gas-sensitive semiconductor sensor and the cathode of the power supply.

By adopting the technical scheme, the resistance value of the QM-N10 gas-sensitive semiconductor sensor in clean air is very high, the control electrode of the unidirectional thyristor SCR is connected with low level, and the unidirectional thyristor SCR is not conducted; when the QM-N10 gas-sensitive semiconductor sensor contacts with fuel gas, the conductivity of the gas-sensitive semiconductor sensor is increased, the resistance value is reduced, and when the resistance value is reduced to a set value, the signal is output by the detection device V1, at the moment, the control electrode of the unidirectional thyristor SCR is connected with a high level, the unidirectional thyristor SCR is conducted, and therefore the signal V2 is sent.

The utility model discloses further set up to: the response circuit comprises an NPN type triode Q1, the base electrode of the triode Q1 is coupled to a connection point between the unidirectional thyristor SCR and the power supply cathode, the emitting electrode of the triode Q1 is grounded, the collecting electrode of the triode Q1 is coupled to the relay KM1, the other end of the relay KM1 is connected to VCC voltage, the switch KM1-1 is a control contact of the relay KM1, one end of the switch KM1-1 is connected to the VCC voltage, the other end of the switch KM1-1 is coupled to the gas solenoid valve, and the other end of the gas solenoid valve is grounded.

By adopting the technical scheme, when the unidirectional thyristor SCR is switched on, the base electrode of the triode Q1 is connected with a high level, the triode Q1 is switched on, the relay KM1 is powered on at the moment, and the switch KM1-1 is pulled in to change the position of the switch KM1-1, so that the gas electromagnetic valve is changed from an open state to a closed state.

The utility model discloses further set up to: the switch KM1-1 is a normally closed contact, and the gas electromagnetic valve is a normally closed electromagnetic valve.

By adopting the technical scheme, when gas leakage occurs, a large amount of combustible gas exists in the surrounding air, so that explosion is easily caused by electric sparks. The structure can automatically turn off the gas electromagnetic valve when the gas content is higher than a set value, so that the gas electromagnetic valve is changed from a power-on state to a power-off state, the gas electromagnetic valve can be safely turned off, and the probability of explosion caused by electric sparks is reduced.

The utility model discloses further set up to: the alarm device comprises a light emitting diode, an NPN triode Q2, an oscillator and a switch KM1-2, wherein one end of the light emitting diode is connected with a voltage VCC, the other end of the light emitting diode is coupled with a collector of the triode Q2, an emitter of the triode Q2 is grounded, a base of the triode Q2 is coupled with the oscillator, the other end of the oscillator is coupled with the switch KM1-2, the other end of the switch KM1-2 is coupled with a connection point between the light emitting diode and a power supply VCC, and the switch KM1-2 is a normally open contact of a relay KM 1.

By adopting the technical scheme, when the control circuit outputs a signal V2 and the alarm device receives a signal V2, the switch KM1-2 is closed, so that the triode Q2 is electrified and conducted, and the light-emitting diode emits light. Under the action of the oscillator, the light emitting diode continuously flickers, is more striking, and can remind people of paying attention to dangerous situations in time.

The utility model discloses further set up to: the alarm device comprises a buzzer and a switch KM1-3, wherein one end of the buzzer is connected with a voltage VCC, the other end of the buzzer is coupled with the switch KM1-3, the other end of the switch KM1-3 is grounded, and the switch KM1-3 is a normally open contact of a relay KM 1.

By adopting the technical scheme, when the control circuit outputs the signal V2 and the alarm device receives the signal V2, the buzzer gives out an alarm sound to remind people of paying attention to a dangerous case in time.

The utility model discloses further set up to: the detection device is connected with the gas meter shell through an electric wire, and the detection device is fixedly installed on the upper side of the gas meter shell.

By adopting the technical scheme, because the gas meter is usually installed in a corner which is not convenient to touch, such as a kitchen cabinet, most of the gas conveyed by the pipeline is natural gas and coal gas, the weight of the gas meter is lighter than that of air, and the gas meter is easy to float in the space on the upper side indoors. Through the connection of electric lines between detection device and the gas table surgery, can install the upside at gas table shell body according to actual need, make measuring result more accurate.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the gas concentration reaches the warning value, residents and workers can be reminded, the valve can be cut off in time, and the maintenance is carried out;

2. the measuring result is more accurate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a circuit diagram of a detection device and a valve opening and closing device in the safety protection device.

Fig. 3 is a circuit diagram of an alarm device in the safety protection device.

In the figure, 1, a gas meter outer shell; 11. a gas inlet; 12. a gas outlet; 13. a gas solenoid valve; 2. a safety protection device; 21. a detection device; 22. a valve opening and closing device; 221. a control circuit; 222. a response circuit; 23. an alarm device; 231. a light source alarm device; 232. provided is an audible alarm device.

Detailed Description

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

Refer to fig. 1 and fig. 2, do the utility model discloses an automatic alarm thing networking gas table, including gas meter case body 1. The upper surface of the gas meter outer shell 1 is integrally formed with a gas inlet 11 and a gas outlet 12, and the gas inlet 11 is fixedly provided with a gas electromagnetic valve 13. The safety protection device 2 is mounted on the gas meter outer shell 1, the safety protection device 2 includes a detection device 21, a valve opening and closing device 22 and an alarm device 23 (shown in fig. 3), and the valve opening and closing device 22 includes a control circuit 221 and a response circuit 222. The detection device 21 is used for detecting the gas content in the surrounding air and sending out a signal V1 when reaching a set value, the control circuit 221 outputs a signal V2 when receiving the signal V1, and the alarm device 23 sends out an alarm signal after receiving the signal V2. The response circuit 222 controls the gas solenoid valve 13 to close after receiving the signal V2. The detection device 21 is connected with the gas meter shell through an electric wire, and the detection device 21 is fixedly installed above the gas meter shell body 1.

Referring to fig. 2 and 3, the detection device 21 includes a gas alarm including a QM-N10 gas-sensitive semiconductor sensor and a heater wire provided in the QM-N10 gas-sensitive semiconductor sensor. The control circuit 221 comprises a unidirectional thyristor SCR and a thermistor Rt, wherein the anode of the unidirectional thyristor SCR is coupled with the anode of the power supply, the cathode of the unidirectional thyristor SCR is coupled with the cathode of the power supply, one end of the QM-N10 gas-sensitive semiconductor sensor is coupled with the anode of the power supply, the other end of the QM-N10 gas-sensitive semiconductor sensor is coupled with the cathode of the power supply, and the control electrode of the unidirectional thyristor SCR is coupled with a connection point between the QM-N10 gas-sensitive semiconductor sensor and the cathode of; one end of the thermistor Rt is coupled with the connection end of the QM-N10 gas sensitive semiconductor sensor and the control electrode of the thyristor, and the other end of the thermistor Rt is coupled with the cathode of the power supply. When the QM-N10 gas sensitive semiconductor sensor contacts with the gas, the conductivity of the gas sensitive semiconductor sensor increases, the resistance value decreases, and when the resistance value decreases to a set value, the signal V1 is output by the detection device 21, and at this time, the control electrode of the unidirectional thyristor SCR is connected with a high level, and the unidirectional thyristor SCR is turned on, so that the signal V2 is sent out. And because the heating wire has higher temperature during working, the thermistor is arranged to compensate the temperature, so that the measurement accuracy is improved.

Referring to fig. 2 and 3, the response circuit 222 includes an NPN-type transistor Q1, a base of the transistor Q1 is coupled to a connection point between the unidirectional thyristor SCR and a power supply cathode, an emitter of the transistor Q1 is grounded, a collector of the transistor Q1 is coupled to the relay KM1, the other end of the relay KM1 is connected to a VCC voltage, the switch KM1-1 is a normally closed contact of the relay KM1, one end of the switch KM1-1 is connected to the VCC voltage, the other end of the switch KM1-1 is coupled to the gas solenoid valve 13, the other end of the gas solenoid valve 13 is grounded, and the gas solenoid valve 13 is a normally closed solenoid. When the unidirectional thyristor SCR is switched on, the base electrode of the triode Q1 is connected with high level, the triode Q1 is switched on, the relay KM1 is powered on at the moment, and the switch KM1-1 is switched off, so that the gas electromagnetic valve 13 is switched from the on state to the off state. The structure can automatically turn off the gas electromagnetic valve 13 when the gas content is higher than a set value, so that the gas electromagnetic valve 13 is changed from an electrified state to an unpowered state, the gas electromagnetic valve can be safely turned off, and the probability of explosion caused by electric sparks is reduced.

Referring to fig. 3, the alarm device 23 includes a light source alarm device 231 and a sound alarm device 232. The light source alarm device 231 comprises a light emitting diode, one end of the light emitting diode is connected to a voltage VCC, the other end of the light emitting diode is coupled to a collector of a triode Q2, an emitter of the triode Q2 is grounded, a base of the triode Q2 is coupled to an oscillator, the other end of the oscillator is coupled to a switch KM1-2, the other end of the switch KM1-2 is coupled to a connection point between the light emitting diode and the power source VCC, and the switch KM1-2 is a normally open contact of a relay KM 1. The sound alarm device 23 comprises a buzzer, one end of the buzzer is connected to a voltage VCC, the other end of the buzzer is coupled with a switch KM1-3, the other end of the switch KM1-3 is grounded, and the switch KM1-3 is a normally open contact of a relay KM 1. When the unidirectional thyristor SCR is conducted, the triode Q1 is conducted, the relay KM1 is electrified, the switch KM1-2 and the switch KM1-3 are attracted and conducted, so that the light-emitting diode emits light, and the light-emitting diode continuously flickers under the action of the oscillator; the buzzer gives an alarm sound to remind people of paying attention to dangerous cases in time.

The implementation principle of the embodiment is as follows: when gas leakage occurs, the content of gas in the air around the gas meter gradually rises, when the content of the gas rises and reaches a set value, the control electrode of the unidirectional thyristor SCR is connected with high level, the unidirectional thyristor SCR is conducted, so that the base electrode of the triode Q1 is connected with the high level, the relay KM1 is electrified, the switch KM1-1 is disconnected, and the switch KM1-2 and the switch KM1-3 are attracted. Thereby reach and turn off gas solenoid valve 13, emitting diode and constantly flash and the buzzer sends the function of alarm sound, effectual warning resident and staff in time cut off the valve and overhaul. If the gas leakage is caused by the fact that a pipeline behind the gas meter and the gas meter is cracked, the gas electromagnetic valve 13 can seal the gas inlet 11, so that the gas cannot continuously pass through the gas meter, and the effect of controlling dangerous situations is achieved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an automatic alarm thing networking gas table, includes gas meter case body (1), and the shell body upper surface is provided with gas import (11) and gas export (12), its characterized in that: the gas inlet (11) on fixed mounting have gas solenoid valve (13), install safety arrangement (2) on gas meter shell body (1), safety arrangement (2) including detection device (21) that detect gas content in the air, valve headstock gear (22) of control gas solenoid valve (13), alarm device (23) for sending alarm signal, valve headstock gear (22) include control circuit (221) and response circuit (222), when detection device (21) detected gas content to the setting value in the indoor air, output signal V1, control circuit (221) when receiving signal V1, output signal V2, response circuit (222) control gas solenoid valve (13) after receiving signal V2 close, alarm device (23) send alarm signal after receiving signal V2.

2. The automatic alarm Internet of things gas meter according to claim 1, characterized in that: the detection device (21) comprises a gas alarm which comprises a QM-N10 gas-sensitive semiconductor sensor and a heating wire, wherein the heating wire is arranged in the QM-N10 gas-sensitive semiconductor sensor.

3. The automatic alarm Internet of things gas meter according to claim 2, characterized in that: the control circuit (221) comprises a unidirectional thyristor SCR, the anode of the unidirectional thyristor SCR is coupled with the anode of the power supply, the cathode of the unidirectional thyristor SCR is coupled with the cathode of the power supply, one end of the QM-N10 gas-sensitive semiconductor sensor is coupled with the anode of the power supply, the other end of the QM-N10 gas-sensitive semiconductor sensor is coupled with the cathode of the power supply, and the control electrode of the unidirectional thyristor SCR is coupled with a connection point between the QM-N10 gas-sensitive semiconductor sensor and the cathode of the power supply.

4. The automatic alarm Internet of things gas meter according to claim 3, characterized in that: the response circuit (222) comprises an NPN type triode Q1, the base electrode of the triode Q1 is coupled to a connection point between the unidirectional thyristor SCR and a power supply cathode, the emitting electrode of the triode Q1 is grounded, the collecting electrode of the triode Q1 is coupled to the relay KM1, the other end of the relay KM1 is connected to VCC voltage, the switch KM1-1 is a control contact of the relay KM1, one end of the switch KM1-1 is connected to the VCC voltage, the other end of the switch KM1-1 is coupled to the gas solenoid valve (13), and the other end of the gas solenoid valve (13) is grounded.

5. The automatic alarm Internet of things gas meter according to claim 4, characterized in that: the switch KM1-1 is a normally closed contact, and the gas electromagnetic valve (13) is a normally closed electromagnetic valve.

6. The automatic alarm Internet of things gas meter according to claim 4, characterized in that: the alarm device (23) comprises a light emitting diode, an NPN triode Q2, an oscillator and a switch KM1-2, wherein one end of the light emitting diode is connected with a voltage VCC, the other end of the light emitting diode is coupled with a collector of the triode Q2, an emitter of the triode Q2 is grounded, a base of the triode Q2 is coupled with the oscillator, the other end of the oscillator is coupled with the switch KM1-2, the other end of the switch KM1-2 is coupled with a connection point between the light emitting diode and a power supply VCC, and the switch KM1-2 is a normally open contact of a relay KM 1.

7. The automatic alarm Internet of things gas meter according to claim 4, characterized in that: the alarm device (23) comprises a buzzer and a switch KM1-3, wherein one end of the buzzer is connected with a voltage VCC, the other end of the buzzer is coupled with the switch KM1-3, the other end of the switch KM1-3 is grounded, and the switch KM1-3 is a normally open contact of a relay KM 1.

8. The automatic alarm Internet of things gas meter according to claim 1, characterized in that: the detection device (21) is connected with the gas meter outer shell (1) through an electric wire, and the detection device (21) is fixedly installed on the upper side of the gas meter outer shell (1).