CN2240679Y

CN2240679Y - Fuel gas leakage controller

Info

Publication number: CN2240679Y
Application number: CN 95244864
Authority: CN
Inventors: 苏福明
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-12
Filing date: 1995-10-12
Publication date: 1996-11-20
Anticipated expiration: 2005-10-12

Abstract

The utility model discloses a fuel gas leakage controller. The utility model is characterized in that the power supply which is treated by changing, rectifying, and stabilizing the voltage is respectively supplied to a detecting circuit, a time circuit, a relay circuit, and an executive device; the detected signal is transmitted to the time circuit by the detecting circuit, and is transmitted to an alarm circuit after the detected signal passes through the relay circuit, and the relative signal is transmitted to the executive device and the electrical appliance by the relay circuit. The utility model adopts an electromechanical integration fully enclosed type, when the noxious or the flammable gas in the air is monitored, the alarm can be sent out; meanwhile, the gas source can be cut off in one minute, and an exhaust fan is started. The utility model has the advantages of simple structure, low energy consumption, stable performance, and high safety. The utility model is an ideal fuel gas leakage controller at present.

Description

The combustible gas leakage controller

The utility model relates to a kind of gas monitor, specifically a kind of device that can control automatically the combustible gas leakage that is harmful to human body of suitable family expenses.

Along with improving constantly of people's living standard as gas range, water heater, apparatus such as warmer are increasing, but incident poisoning happens occasionally, therefore the gas monitor of family expenses begins to enter family gradually, present gas monitor system mostly is to report to the police after monitoring the fuel gas of leakage, reminds people valve-off or door window, open exhaust fan etc., function ratio is more single, though in the industrial control system that the use electric operator is arranged, but this device is not only complicated, heaviness, and cost height are not suitable for civilian, on current market, also do not see simple in structure, be fit to family expenses, and after monitoring combustible gas leakage, can not only report to the police, and the control device of energy automatic-closing valve.

It is a kind of suitable civilian that the purpose of this utility model is to provide, and can not only monitor the leakage of fuel gas, and the controller of energy automatic-closing valve.

The technical solution of the utility model is achieved in that it mainly comprises shell, transformation regulator rectifier circuit, testing circuit, time circuit, relay circuit, warning circuit and actuating unit, is characterized in that: the power supply behind the transformation rectifying and voltage-stabilizing is supplied with the input of testing circuit, time circuit and the relay in the relay circuit respectively; Testing circuit is connected with relay circuit with time circuit connect hours circuit, and relay circuit links to each other with warning circuit, actuating unit, electrical appliance respectively.

The utility model adopts the electromechanical integration totally enclosed type, concentration to poisonous in the air or fuel gas is monitored, in monitoring air, contain and make 2% poisonous or fuel gas of human body poisoning concentration (comprise carbon monoxide, toluene, phenol, gasoline, alcohol and hydrocarbon etc.) time, promptly begin to report to the police, and when reporting to the police, can in 1 minute, turn-off source of the gas, opening exhaust fan takes a breath, whole process is all handled automatically, this controller architecture is simple, actuating unit no-spark in entire work process produces, its normal working voltage is direct current 10-20V, it is little to consume energy, stable performance, safe and reliable is a kind of comparatively desirable combustible gas leakage controller at present.

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is the electrical schematic diagram of the utility model one embodiment.

The utility model will be further described below in conjunction with drawings and Examples.

The utility model mainly is made up of regulator rectifier circuit 1, testing circuit 2, time circuit 3, relay circuit 4, warning circuit 5, actuating unit 6, ventilating fan 7, and wherein, regulator rectifier circuit 1 is by transformer, rectifying tube D ₁-D ₄, D ₈-D ₁₁, filter capacitor C ₁-C ₃, C ₅With a three-terminal voltage-stabilizing ic chip ₁Form, step-down transformer is drawn two groups of low pressure, a winding and C from paying coil ₁Carry out D in parallel ₁-D ₄Bridge rectifier, C ₂, C ₃An end each and IC ₁An end link to each other C ₂, C ₃The other end and the input of bridge rectifier all and IC ₁The 3rd end link to each other another winding D ₈-D ₁₁Bridge rectifier, this bridge rectifier and C ₅In parallel; Testing circuit 3 is made up of probe and adjustable resistance W, pop one's head in to have and add thermoae f-f ' and control utmost point A, B two ends, present embodiment adopts QM-K type temperature-sensitive air-sensitive type probe, its control utmost point A end is connected in series with W, the sensitivity that act as of W is aligned, the response time of time circuit can be aligned within 10 seconds, can align recovery time within 30 seconds; Time circuit 3 is mainly by ic chip ₂, resistance R ₄, capacitor C ₄, diode D ₇And relay J ₁Form the IC of present embodiment ₂Adopt UA555 integrated package, it and R ₄, C ₄The mode of forming trigger, D ₇With J ₁Parallel connection is connected IC ₂And 1,3 between end.IC ₂6 ends link to each other diode D with the A end of probe with the end of W respectively ₇Play the overvoltage protection effect; Relay circuit 4 is mainly by three relay J ₁, J ₂, J ₃, resistance R ₂, R ₃With light emitting diode D ₅, D ₆Form J ₁Normally opened contact J ₁' respectively with J ₃, D ₅With the ic chip in the warning circuit 5 ₃Link to each other normally opened contact J ₁" and J ₂Link to each other J ₂Normally opened contact J ₂' with actuating unit 6 in hand push button AN ₁Link to each other normally opened contact J ₂" with limit switch S ₂Link to each other J ₃Normally opened contact J ₃' linking to each other with electrical appliance 7, the electrical appliance 7 of present embodiment is ventilating fan RL, also can be the controlling organization that door and window is opened, light emitting diode D ₅, D ₆All be arranged on the panel of shell; Warning circuit 5 is mainly by ic chip ₃Form with loudspeaker r; 6 of actuating units are mainly by motor D, relay J ₂Two normally opened contact J ₂', J ₂", limit switch S ₁, S ₂With button AN ₁Form, motor D respectively with J ₂', J ₂" link to each other, the axle of motor D is provided with worm gear, this worm gear and the engagement of motor rocking arm, and to realize the cooperation of its rotation, explosion-proof direct current generator is adopted in this enforcement.

The probe of testing circuit 2 adds the voltage of thermoae f-f ' by rectification, and mu balanced circuit 1 is through IC ₁Two ends supply with the IC of signal controlling utmost point A termination time circuit 3 ₂6 ends, B end passes through resistance R ₁And capacitor C ₁, make A, B two ends keep certain normal voltage (for example being 6V), the A end is high potential, i.e. IC ₂In 6 ends also be high potential, the light emitting diode D be installed on the housing face-plate is set in the relay circuit 4 ₆Green light is sent in conducting, and is normal to show the monitoring situation, when around the gas of flammable or some harmful healths is being popped one's head in, existing, because of electrical conductivity increases, A, B both end voltage will change (for example becoming 1.5V), thereby make the ic chip in the time circuit ₂Trigger upset, make IC ₂In 3 terminal potentials raise relay J ₁Action, normally opened contact J ₁' and J ₂" by adhesive, on the one hand warning circuit 5 conductings are reported to the police, simultaneously J ₃Action, normally opened contact J ₃' by adhesive, ventilating fan is opened and carries out exhaust ventilation, on the other hand because J ₁" by adhesive, J ₂Action, J ₂' and J ₂" by adhesive, the noise control motor D is rotated and is made the motor rocking arm drive valve handle valve-off gradually, when motor goes to limit switch S ₂The time limited stopping, this moment because of J ₁' by adhesive, light emitting diode D ₆End D ₅Ruddiness is sent in conducting, also as the cue of reporting to the police, AN ₁, AN ₂Be hand push button, as want to open gas source valve by AN ₁Motor D is rotated and drive valve handle and open valve gradually, when motor goes to S by the motor rocking arm ₁Spacing position the time stop operating button AN ₂Then be when the manual-lock valve, to use.

Claims

1. combustible gas leakage controller, mainly comprise shell, transformation regulator rectifier circuit, testing circuit, time circuit, relay circuit, warning circuit and actuating unit is characterized in that: the power supply behind the transformation rectifying and voltage-stabilizing is supplied with the input of testing circuit, time circuit and the relay in the relay circuit respectively; Testing circuit is connected with time circuit, and time circuit is connected with relay circuit, and relay circuit links to each other with warning circuit, actuating unit, electrical appliance respectively.

2. by the described combustible gas leakage controller of claim 1, it is characterized in that: rectifying voltage regulator also adopts a three-terminal voltage-stabilizing integrated package (IC ₁); Probe in the testing circuit is the temperature-sensitive air-sensitive type, has to add thermoae and the control utmost point; Integrated package of pressure-stabilizing (IC ₁) two ends supply with adding of probe thermoae (f-f ') respectively.

3. by the described combustible gas leakage controller of claim 1, it is characterized in that: time circuit mainly adopts an integrated package (IC ₂) trigger formed, overvoltage protection diode (D ₇) and relay (J ₁) parallel connection, be connected (IC ₂) 1,3 ends, 6 ends link to each other with the A end of the probe control utmost point.

4. by the described combustible gas leakage controller of claim 1, it is characterized in that: relay circuit has adopted three relays, relay (J ₁) with warning circuit in integrated package (IC ₃) link to each other; Relay (J ₂) with actuating unit in hand push button (AN ₁) link to each other; Relay (J ₃) link to each other with electrical appliance, on the panel of shell, also be provided with red green two light emitting diodes.

5. by the described combustible gas leakage controller of claim 1, it is characterized in that: the motor in the actuating unit adopts explosion-proof direct current generator, and motor shaft is provided with the worm gear with the rocking arm engagement.

6. by the described combustible gas leakage controller of claim 1, it is characterized in that: electrical appliance is that exhaust fan also can be the controlling organization that door and window is opened.

7. by the described combustible gas leakage controller of claim 1, it is characterized in that: in relay circuit and actuating unit, be provided with hand push button; In actuating unit, also be provided with two limit switches.