CN2363191Y

CN2363191Y - Combustible gas automatic monitoring controller

Info

Publication number: CN2363191Y
Application number: CN 98251112
Authority: CN
Inventors: 陆正大
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-23
Filing date: 1998-12-23
Publication date: 2000-02-09
Anticipated expiration: 2008-12-23

Abstract

The utility model relates to a combustible gas automatic monitoring controller, and belongs to a monitoring device for gas tools using natural gas, coal gas, liquefied gas as fuel. The utility model is composed of a detection device and a control valve, wherein, the detection device is composed of a transformer, a rectifier, a voltage stabilizing block, a gas-sensitive element, a relay and an acoustic-optic element. When the difference of the inlet gas pressure and the outlet gas pressure of the control valve achieves rated values, a valve core of the control valve automatically cuts off a gas source. Whether power is cut off or not, the utility model ensures control.

Description

The combustible gas automator

The utility model relates to a kind of combustible gas automator, belongs to the supervising device that natural gas, coal gas, liquefied gas are made combustion gas tools such as the stove and accessory of fuel, shower.

The liquefied gas controller of existing gas cooker mostly adopts solenoid control, and only can control a kind of gas, and when having a power failure, controller promptly loses function.

The purpose of this utility model be avoid the above-mentioned weak point of prior art and provide a kind of and be convenient to install, the wider automatic monitor valve of combustible gas of gas control effect range of application constant, that be applicable to natural gas, coal gas and liquefied gas when having a power failure.

The purpose of this utility model reaches by following technical measures.

The utility model includes checkout gear, the fuse on this checkout gear, power input, gas sensor, buzzer, relay indicating light, alarm lamp, control output end and circuit board.Circuit on the circuit board is connected to form by fuse, transformer, rectifier, regulator block, gas sensor, integrated package, light emitting diode and relay.

Checkout gear is connected with a control valve, this control valve by the valve opening with three sections different apertures and with the valve body of valve opening inlet communicating and outlet, be with the ⊥ shape spool of sealing ring in the groove in the valve opening, adjustment screw in valve opening one end and the valve gap on the other end thereof, the coil rack that has the hole and be threaded with valve body, coil on this coil rack and coil end cap, have the hole and be enclosed within valve bonnet on the valve body, the spring shield that has the hole and be connected with valve bonnet, one end has the O-ring seals other end and is provided with external screw thread and penetrates the spring shield hole, the screw in valve bonnet hole and coil rack hole, one is connected with the screw external screw thread, the center has the spring shield of internal thread pipe, and being enclosed within screw between spring shield and the spring shield and the spring on the spring shield pipe is formed, the checkout gear control output end is connected with coil in the control valve through lead.

Be connected with gas sensor or photosensitive unit or temperature-sensitive element in the circuit of checkout gear between regulator block and the integrated package, to enlarge its range of application.

When leaking with device of air or utensil, when containing certain density fuel gas in the air, the induction of the gas sensor of checkout gear changes, and red light emitting diodes is warned, the relay adhesive, buzzer is warned, and connects the coil in the control valve simultaneously, and screw, valve bonnet, end cap and spool form magnetic loop, spool is picked up, sealing ring on the spool is close to valve opening upper surface sealing valve opening, cuts off air-flow, reaches prison and shows the control purpose.When inlet air pressure reaches rated value with the difference that exports air pressure, promote spool and make the sealing ring sealing valve opening on the spool cut off source of the gas automatically, because of the service restoration ventilation, under spring action, screw does not reset.

Compared with the prior art the utility model has following advantage: utilize the pressure reduction of valve body entrance and exit gas, can automatically valve opening in the valve body be sealed, and not out of control because of power failure.Gas sensor available light photosensitive elements or temperature-sensitive element replace in the circuit, and the scope of application is more extensive.

The explanation of accompanying drawing drawing:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the circuit diagram of checkout gear.

Following the utility model will describe in detail embodiment (in conjunction with the accompanying drawings).

The utility model shown in Figure 1 comprises checkout gear 9, fuse 7 on this monitoring device 9, power input 8, gas sensor 11, buzzer 10, relay indicating light 12, alarm lamp 13, control output end 16 and circuit board 14, the circuit on the circuit board 14 connects to form (see figure 2) by fuse, transformer B, rectifier D1-D4, regulator block 7812, gas sensor MQ, integrated package 555, light emitting diode (LED1 and LED2) and relay.

Checkout gear 9 is connected with control valve 1, this control valve 1 by the valve opening 5 in three sections different apertures of tool and with the valve body 19 of valve opening 5 inlet communicating 35 and outlet 6, be with the ⊥ shape spool 18 of sealing ring 4 in the groove 3 in the valve opening 5, the screw 2 in valve opening 5 one ends and the valve gap 20 of the other end, the coil rack 22 that has hole 26 and be threaded with valve body 19, coil 21 on this coil rack 22 and coil end cap 24, have hole 29 and be enclosed within valve bonnet 25 on the valve body 19, the spring shield 28 that has hole 30 and be connected with valve bonnet 25, one end tool O-ring seals, 23 other ends are provided with external screw thread 34 and penetrate spring shield hole 30, the screw 27 in valve bonnet hole 29 and coil rack hole 26, one is connected with screw external screw thread 34, the center have the spring shield 32 of internal thread pipe 33 and be enclosed within spring shield 28 and spring shield 32 between screw and the spring on the spring shield pipe 33 31 form.Checkout gear 9 control output ends 16 are connected with coil 21 in the control valve 1 through lead 17.

Can connect gas sensor 11 or light-sensitive element or temperature-sensitive element between regulator block 7812 and the integrated package 555 in the circuit in checkout gear 9 on the circuit board 14.

Use when implementing, connect the utility model power supply when reaching finite concentration because of pipeline or the leakage of burning appliance gas in the air, checkout gear 9 is exported the 15V AC power through the D1-D4 rectification through its transformer B step-down, by regulator block 7812 voltage stabilizings, provide integrated package 555 conditions of work, relay indicating light--LED 1, Yellow luminous.After gas sensor 11 is sensed airborne combustible gas, resistance variations among gas sensor (QM) 11, internal resistance sharply descends, and 2 pin of collection face piece 555 reach 1/3V _DDThe time, output 3 becomes electronegative potential from the high potential wraparound, and red light emitting diodes LED2 is luminous to warn, and the relay J adhesive is connected buzzer 10 sounding and is warned, and connects control coil 21 simultaneously, generates magnetic loop, and adhesive spool 18 turn-offs air-flow, reaches monitoring purposes.

Claims

1, a kind of combustible gas automator, include checkout gear [9], fuse [7] on the monitoring device [9], power input [8], gas sensor [11], buzzer [10], relay indicating light [12], alarm lamp [13], control output end [16] and circuit board [14], circuit on the circuit board [14] is by fuse, transformer [B] rectifier [D1-D4], regulator block [7812], gas sensor [MQ], integrated package [555], light emitting diode [LED1 and LED2] and relay [J] connect to form, it is characterized in that checkout gear [9] is connected with a control valve [1], described control valve [1] by the valve opening with three sections different apertures [5] and with valve opening [5] inlet communicating [35] and the outlet [6] valve body [19], be with the ⊥ shape spool [18] of sealing ring [4] in the groove [3] in the valve opening [5], the screw [2] in valve opening [5] one ends and the valve gap [20] of the other end, has coil rack [22] hole [26] and that be threaded with valve body [19], coil [21] on this coil rack [22] and coil end cap [24], have hole [29] and be enclosed within valve bonnet [25] on the valve body [19], has spring shield [28] hole [30] and that be connected with valve bonnet [25], one end has O-ring seals [23], the other end is provided with external screw thread cover [34] and penetrates spring shield hole [30], the screw [27] of valve bonnet hole [29] and coil rack hole [26], one is connected with screw external screw thread [34], the center has the spring shield [32] of internal thread pipe [33], and being enclosed within screw [27] between spring shield [28] and the spring shield [32] and the spring [31] on the spring shield pipe [33] is formed, checkout gear [9] control output end [16] lead [17] is connected with coil [21] in the control valve [1].

2, combustible gas automator according to claim 1 is characterized in that in the checkout gear [9] also can being connected with light-sensitive element or temperature-sensitive element between the regulator block [7812] and integrated package [555] in the circuit on the circuit board [14].