CN2826194Y

CN2826194Y - Fuel gas safety device

Info

Publication number: CN2826194Y
Application number: CN 200520033873
Authority: CN
Inventors: 王飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-14
Filing date: 2005-04-14
Publication date: 2006-10-11
Anticipated expiration: 2015-04-14

Abstract

The utility model relates to a fuel gas safety device which comprises a fuel gas detecting alarm device, a driving device and a machine actuating mechanism. The utility model is characterized in that the fuel gas detecting alarm device comprises a main control circuit, a sensor signal circuit and a voltage-stabilizing and starting-up time delay circuit which is connected to the main control circuit and controls the input of sensor signals, wherein the driving device comprises an electric machine, an electric machine cover and a clutch; the machine actuating mechanism comprises a rotating arm, a mechanical hand lever, a limiting bolt, a fuel gas ball valve and a supporting frame, wherein the rotating arm is fixedly connected with a rotating shaft of the electric machine in the driving device and is driven to rotate by the rotating shaft, and the rotating arm drives one end of the mechanical hand lever through the limiting bolt and controls the opening and closing of the fuel gas ball valve. The utility model has the advantages of simple structure, easy installation and operation by ordinary persons, low cost, small energy consumption, reliable performance, accurate motion execution, strong flexibility and high safety.

Description

Gas safety device

Technical field

The utility model relates to a kind of gas safety device, definite a kind of family, dining room of being applicable to of saying so, can carry out the combustion gas leak detection in the occasions such as restaurant and take sound and light alarm and can be manually or reach the remote closing fuel gas ball valve automatically, cut off a kind of gas safety device of source of the gas.

Background technology

At present, the use of the clean type energy such as natural gas, liquefied petroleum gas and coal gas is more and more universal, and blast is revealed in consequential combustion gas, the poisoning serious accident also occurs repeatedly, and uses the safety problem of fuel gas to get more and more people's extensive concerning.China utility model patent specification CN85205593 discloses a kind of gas appliance safety device, its actuator of this safety device is the impulse electromagnetic valve that adopts, adopt this kind magnetic valve can be, prevent the leak generation of accidents such as causing poisoning, fire even blast of unburned gas at the instantaneous trip source of the gas of fray-out of flame.But the custom-designed for this reason magnetic valve of this utility model is a pilot-type solenoid valve, the structure of this kind valve is comparatively complicated, cost is corresponding higher, and be difficult for being grasped installation by domestic consumer, during use, the valve of magnetic valve very easily is subjected to the influence of electromagnetic force and causes being not closed completely and leak gas, and has caused serious potential safety hazard.Another part China disclosed number of patent application on July 15th, 1992 is 92100203.3, publication number be CN1062801's " gas leakage autoalarm amputator ", it cuts off the source of the gas operating part mainly is the mechanical device of magnet control, mechanical device is mainly by pole, energy-stored spring, compositions such as rubber sheet gasket.Electromagnet drives restoring link, make the pole closed gas flow valve that under spring action, moves upward, it is bigger that this mode exists control restoring link requirement power of electromagnet, and the execution that is prone to mistake is moved, even do not work, relay control work of electromagnet, its contact easily produces electric spark, causes defectives such as danger.Therefore existing gas safety device exists that power consumption is big, cost is high, can not accurately and timely close the combustion gas air outlet valve, also is easy to generate false alarm simultaneously, and influence is normally used.

Summary of the invention:

The purpose of this utility model is the deficiency that exists at above-mentioned existing gas safety device, a kind of family that is applicable to is provided, the dining room, can carry out the combustion gas leak detection in the occasions such as restaurant and take sound and light alarm and can be manually or reach the remote closing fuel gas ball valve automatically, cut off the gas safety device of source of the gas, this device has adopted voltage stabilizing and start delay circuit, guaranteeing can false alarm after the start, its mechanical actuating mechanism that adopts is more reliable than traditional magnetic valve performance, can not cause the fill order mistake even not worked because of the influence that is subjected to electromagnetic force, and it is simple in structure, power consumption is little, cost is low, and can by mechanical handle accurately and timely close fuel gas ball valve, cut off source of the gas.

The utility model is achieved through the following technical solutions:

A kind of gas safety device, comprise combustion gas detection alarm device, drive unit and mechanical actuating mechanism, it is characterized in that: described combustion gas detection alarm device comprises main control circuit, sensor signal circuit and voltage stabilizing that on main control circuit, is connected the input of control sensor signal and start delay circuit, described drive unit comprises motor, motor cover and clutch, described mechanical actuating mechanism comprises pivoted arm, mechanical handle, caging bolt, fuel gas ball valve and support, the rotating shaft of the motor in described pivoted arm and the drive unit is fixedlyed connected and is driven pivoted arm by rotating shaft and rotates, and described pivoted arm drives mechanical handle one end and controls fuel gas ball valve and open or cut out through caging bolt.

Described combustion gas detection alarm device also comprises power supply rectification filter circuit, remote control treatment circuit and failure alarm circuit.

Described motor, clutch are fixed in the motor cover, and described clutch is arranged between pivoted arm and the motor.

Described support is fixedlyed connected with motor cover by the mounting ear in the motor cover, described support is installed on the fuel gas ball valve, described fuel gas ball valve is provided with the fuel gas ball valve axle of fixedlying connected with mechanical handle, and the other end of described mechanical handle is fixedlyed connected with the fuel gas ball valve axle.

Described voltage stabilizing and start delay circuit are made up of Q2, U1A, C3, after electric current enters voltage stabilizing and start delay circuit, described Q2 conducting, circuit is earlier to capacitor C 3 chargings, by the time after the voltage of C3 is full of, 1 pin output HIGH voltage of U1A unit makes Q2 turn-off, delay time and finish, and whole voltage stabilizing and the work of start delay circuit finish.

Described main control circuit adopts the CM324 module, main control circuit to all signals receive-handle-export.

Described combustion gas detection alarm device is connected with drive unit by a branch of two lead-in wires, and described lead-in wire sectional area is 0.3 square millimeter.

Operation principle of the present utility model: work as power connection, electric current is by rectifying and wave-filtering and voltage stabilizing time-delay, guarantee that start can false alarm, gas sensor is started working, detect the concentration of fuel gas (CO) in the air, combustable gas concentration surpasses the scope that gas safety device allowed in one denier air, alarm signal leads up to that sound light alarming circuit sends alarm sound and light reminds the user to note, the delay circuit of leading up to time-delay conveys to motor-drive circuit control Mechanical Driven executing agency and closes gas check valve automatically after 8 seconds, pending fault is removed, can machine be restarted by manual or two kinds of functions of remote control, to reach the purpose of opening gas again.

Advantage of the present utility model is:

1, dependable performance: because the utility model has adopted voltage stabilizing and start delay circuit, having guaranteed can false alarm after the start, and the mechanical actuating mechanism that the utility model adopts is more reliable than traditional magnetic valve performance, can not cause the fill order mistake even not worked because of the influence that is subjected to electromagnetic force.

2, power consumption is little: drive the mode rotatable gas ball valve of mechanical handle with lever because the utility model adopts motor shaft to connect pivoted arm, made full use of the motor energy, saved energy consumption.

3, torque is big: because the mode rotatable gas ball valve axle of the utility model by lever, the size of torque by pivoted arm and mechanical handle to be connected length adjustable.Same energy consumption can obtain maximum torque.Be beneficial to that to solve valve year malfunctioning for a long time and cause reversing the big problem of difficulty.

4, because this Mechanical Driven executing agency has adopted between motor and pivoted arm clutch is set, satisfied when the time needs of hand switch ball valve easily, also increased security owing to power failure, driving mechanism fault, maintenance and debugging ball valve.

What 5, the utility model adopted is simple in structure, ingenious, easily with in the ordinary person install, operation, and cost is low, energy consumption is little, safe and reliable.

Accompanying drawing and drawing explanation

Fig. 1 is drive unit of the present utility model and mechanical actuating mechanism structural representation

Fig. 2 is a schematic block circuit diagram of the present utility model

Fig. 3 is a physical circuit schematic diagram of the present utility model

Fig. 4 is an operation principle structured flowchart of the present utility model

The specific embodiment:

Embodiment 1

A kind of gas safety device, comprise combustion gas detection alarm device 1, drive unit 2 and mechanical actuating mechanism 3, described combustion gas detection alarm device comprises main control circuit 4, sensor signal circuit 5 and voltage stabilizing that on main control circuit 4, is connected the input of control sensor signal and start delay circuit 6, described drive unit 2 comprises motor 7, motor cover 8 and clutch 9, described mechanical actuating mechanism 3 comprises pivoted arm 10, mechanical handle 11, caging bolt 12, fuel gas ball valve 13 and support 14, the rotating shaft 15 of the motor 7 in described pivoted arm 10 and the drive unit 2 is fixedlyed connected and is driven pivoted arms 10 by rotating shaft 15 and rotates, and described pivoted arm 10 drives mechanical handle 11 1 ends and controls fuel gas ball valve 13 and open or cut out through caging bolt 12.Described combustion gas detection alarm device 1 also comprises power supply rectification filter circuit 16, remote control treatment circuit 17 and failure alarm circuit 18.Described motor 7, clutch 9 are fixed in the motor cover 8, and described clutch 9 is arranged between pivoted arm 10 and the motor 7.Described support 14 is fixedlyed connected with motor cover 8 by the mounting ear 19 in the motor cover 8, described support 14 is installed on the fuel gas ball valve 13, described fuel gas ball valve 13 is provided with the fuel gas ball valve axle 20 of fixedlying connected with mechanical handle 11, and the other end of described mechanical handle 11 is fixedlyed connected with fuel gas ball valve axle 20.Described voltage stabilizing and start delay circuit 6 are made up of Q2, U1A, C3, after electric current enters voltage stabilizing and start delay circuit 6, described Q2 conducting, circuit is earlier to capacitor C 3 chargings, by the time after the voltage of C3 is full of, 1 pin output HIGH voltage of U1A unit makes Q2 turn-off, delay time and finish, and whole voltage stabilizing and 6 work of start delay circuit finish.Described main control circuit 4 adopts the CM324 modules, and 4 pairs of all signals of main control circuit receive-handle-export.Described combustion gas detection alarm device 1 is connected with drive unit 2 by a branch of two lead-in wires 21, and described lead-in wire 21 sectional areas are 0.3 square millimeter.

Embodiment 2:

Fig. 3 is a kind of preferable specific embodiment of the present utility model: in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 works as power supply as can be known and is imported through transformer T1 transformation at secondary output 7.7V-0-7.7V by alternating current 220V, through V1, V2, V3, the V4 diode rectification is transformed into DC voltage after by C1 filtering and inputs to voltage stabilizing and start delay circuit, described start delay circuit is by Q2, U1A, C3 forms, after electric current enters voltage stabilizing and start delay circuit, described Q2 conducting, circuit is earlier to electric capacity 3 chargings, by the time after the voltage of C3 is full of, 1 pin output HIGH voltage of U1A unit turn-offs Q2, time-delay finishes, whole voltage stabilization delay circuit work finishes, system continues normal operation, the current flowing main control circuit, described main control circuit adopts the CM324 module, main control circuit is made reception-processing-output action to all signals, the current flowing gas sensor, when if gas sensor finds to have combustion gas to reveal, described gas sensor relatively amplifies the 8 pin output of back from U1C with regard to output signal by 10 pin of U1C, and the R10 of leading up to promotes loudspeaker LS1 to the base stage of audible alarm circuit Q3 and sends chimes of doom and note with the prompting user; Lead up to R9 to LED 1 luminous indication; Another road is amplified back 7 pin output from U1B to 6 pin of U1B by U1B by R23, V12, R25, again by making Q1 turn-on relay J1 adhesive behind C12, the C13 electric capacity time-delay certain hour, thereby control relay J3 makes machine operation again, treat that machine operation drives the supply voltage that disconnects relay J 3 valve touches microswitch K3 when 90 spend on the positions after machine operation is stopped, it is bright to close the gas indicator lamp simultaneously, and source of the gas has been cut off in expression.Described gas gas sensor sensitivity detects testing circuit and is made up of U1D, when gas sensor A resistance between B the 13 pin voltages of U1D are changed when becoming big, the malfunction indicator lamp LED2 that outputs on the panel through 14 pin and the R13 of U1D after relatively amplifying via U1D is bright, the expression gas sensor will be changed, with assurance equipment reliable and stable carry out work.Again start after pending fault is got rid of, can machine be opened again by manual and two kinds of functions of remote control, again start is by opening gas key switch K2 on the panel, relay J 2 conducting machine operation are opened shut off valve when pressing K2, make motor stop to reach out the purpose of gas when reaching the supply voltage that disconnects relay J 2 after valve touches microswitch K4 when vertical.

Because the utility model has adopted voltage stabilizing and start delay circuit, can false alarm after having guaranteed to start shooting.And the mechanical actuating mechanism that the utility model adopts is more reliable than traditional magnetic valve performance, can not cause the fill order mistake even not worked because of the influence that is subjected to electromagnetic force; Adopt motor shaft to connect pivoted arm and drive the mode rotatable gas ball valve of mechanical handle, made full use of the motor energy, saved energy consumption with lever; By the mode rotatable gas ball valve axle of lever, the size of torque by pivoted arm and mechanical handle to be connected length adjustable, same energy consumption can obtain maximum torque, is beneficial to that to solve valve year malfunctioning for a long time and cause reversing the big problem of difficulty; The utility model Mechanical Driven executing agency has adopted between motor and pivoted arm clutch has been set, and has satisfied when because the needs of hand switch ball valve easily when power failure, driving mechanism fault, maintenance and debugging ball valve have also increased security;

Summary the utility model is simple in structure, ingenious, is easy to that the ordinary person installs, operation, and cost is low, energy consumption is little, dependable performance, execution action accurately, flexibility is strong, safe.

Claims

1, a kind of gas safety device, comprise combustion gas detection alarm device (1), drive unit (2) and mechanical actuating mechanism (3), it is characterized in that: described combustion gas detection alarm device comprises main control circuit (4), sensor signal circuit (5) and voltage stabilizing that on main control circuit (4), is connected the input of control sensor signal and start delay circuit (6), described drive unit (2) comprises motor (7), motor cover (8) and clutch (9), described mechanical actuating mechanism (3) comprises pivoted arm (10), mechanical handle (11), caging bolt (12), fuel gas ball valve (13) and support (14), the rotating shaft (15) of the motor (7) in described pivoted arm (10) and the drive unit (2) is fixedlyed connected and is driven pivoted arm (10) by rotating shaft (15) and rotates, and described pivoted arm (10) drives mechanical handle (11) one ends and controls fuel gas ball valve (13) and open or cut out through caging bolt (12).

2, a kind of gas safety device according to claim 1 is characterized in that: described combustion gas detection alarm device (1) also comprises power supply rectification filter circuit (16), remote control treatment circuit (17) and failure alarm circuit (18).

3, a kind of gas safety device according to claim 1 is characterized in that: described motor (7), clutch (9) are fixed in the motor cover (8), and described clutch (9) is arranged between pivoted arm (10) and the motor (7).

4, a kind of gas safety device according to claim 1, it is characterized in that: described support (14) is fixedlyed connected with motor cover (8) by the mounting ear (19) in the motor cover (8), described support (14) is installed on the fuel gas ball valve (13), described fuel gas ball valve (13) is provided with the fuel gas ball valve axle (20) of fixedlying connected with mechanical handle (11), and the other end of described mechanical handle (11) is fixedlyed connected with fuel gas ball valve axle (20).

5, a kind of gas safety device according to claim 1, it is characterized in that: described voltage stabilizing and start delay circuit (6) are made up of Q2, U1A, C3, after electric current enters voltage stabilizing and start delay circuit (6), described Q2 conducting, circuit is earlier to capacitor C 3 chargings, by the time after the voltage of C3 was full of, 1 pin output HIGH voltage of U1A unit made Q2 turn-off, delay time and finish, and whole voltage stabilizing and start delay circuit (6) work finish.

6, a kind of gas safety device according to claim 1 is characterized in that: described main control circuit (4) adopts the CM324 module, main control circuit (4) to all signals receive-handle-export.

7, a kind of gas safety device according to claim 1 is characterized in that: described combustion gas detection alarm device (1) is connected with drive unit (2) by a branch of two lead-in wires (21), and described lead-in wire (21) sectional area is 0.3 square millimeter.