JPS58130059A - Gas shielding system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a scum cutoff system, and its first purpose is to automatically shut off gas when scum is detected, thereby ensuring safety. At the same time, the purpose is to provide a dregs disconnection system that is unlikely to be cut off by a malfunctioning VC.The second objective is to provide a dregs connection system in which gas can be easily cut off by operating a cutoff switch. It is about providing.

Examples will be explained below using figures. Figures 1 and 2 show the configuration of a gas detection unit 11) that detects gas sufficiency and outputs a waste detection signal (To).
O8) is a type of metal oxide semiconductor in which a sintered body of metal oxide semiconductor such as 8nOs is placed between the heater ill and the resistance detecting pole fPl, and it is combustible with a soft wire energized by HH+. K is designed so that the resistance value between Shi-9 (2) and the electrode IPI changes (decreases) due to contact with the reactive gas. Fushiparator using nor Id operation (
This is a waste detection circuit consisting of (CPs) (CPs) (CPm), which determines the voltage difference between both ends of the resistor IRI (CPs) due to the change in the resistance value of the gas ty (O8), and determines the difference between the gas t + It ( When the resistance value of O8) reaches the preset value, the comparator (OF2) (CP proverb)
The gas detection signal (
VG) is output. Here, 1 signal processing circuit (Ill ke 1 [#) is used to prevent signal transfer at the time of input. (PC)' is input to the output circuit +1fi4c.

The output circuit consists of transistors (Ql) (Ql) and diode diodes (ZDs) (ZDm).
It is output as a gas detection signal (VCl) consisting of a gas detection signal (To) and a bell signal.
In the second embodiment, a voltage level signal of 12V is output when gas is detected, and 6V when non-resistance is detected. aS is OP 凰, light emitting diode (
LDt)% This is an alarm circuit consisting of transistors (Ql) to (Ql) and a buzzer (BZt), and the signal processing circuit +
When a gas detection signal (Vo) is output via +11, one light-emitting diode (LDt) is lit repeatedly and a buzzer (BZs) sounds to issue an alarm. is the power supply system that steps down 1fil on the commercial side, and (tea) and (tab) are the power supply circuits. Note that when gas detection No. 11 (Vo) is not obtained, the light emitting diode (LDI) is lit continuously.

Fig. 8 and Fig. 4 show Kf and stop signal (Vs) when the gas detection signal (Vσ) is obtained for a preset time or more.
61Q is an input protection circuit, 61Q is an input protection circuit;
Dm), and a gas detection signal (Dm) consisting of a voltage and bell signal output from the tl gas detection section.
Determine the level of vocalization. 4 is the OR time constant circuit (OR
) and an operational amplifier (OPm), and the level discrimination circuit 31) output is a timer circuit consisting of a CIIL time constant circuit (
When the timer circuit (OR) becomes H for a certain period of time set and becomes a bell, that is, when the gas detection color code (Vo') is obtained for a certain period of time, the timer circuit (output becomes H level.@
is a timer circuit @ which turns on when the output suddenly goes to H level 8
(aI1 connected in parallel to 3R+81 and 80kL+81
The output circuit consisting of the 1r switch (2a) is strange. When the timer circuit output goes high and becomes a bell, and when the disconnection switch (2 tortoise) is closed, the terminal (A) 1BI K
Outputs gas cutoff signal (Vs). (Incorporated) is a buzzer circuit consisting of a transistor (Ql) and a buzzer (BZs), which is activated when a t'Js cutoff signal (Vs) is output. @ is operational amplifier (OPs)
and light emitting diodes (LDs), and when the operation confirmation switch 81 of the gas cutoff section (3), which will be described later, is turned off, the light emitting diodes (LDs) are activated.
) will flicker, however, when the buzzer is on, the light emitting diode and de (LD) will flicker.
s) indicates that the vehicle is on a waiting list by lighting up continuously.

Figures 5 and 6 show the waste blocking part (3).
C3U is a solenoid that is activated by the suspension signal (Vs).
The example in Figure 0 that drives the gas cross-cutting fence structure @S at Iz is a drive piece rotatably supported on a shaft (84&), 13f) is a tangible body, and (86&) is a gas inlet,
(88b) is a gas outlet, (371 is a waste pipe,
Operation confirmation switch 1381k'i actuator (88
1) It is opened and closed at the Brassier (Foundation) through 't-, and the V1 substance is turned off when the gas is blocked by blocking the gas outlet (86b). It has become.

By the way, in the *embodiment, the L scrap detection section port 1, the a cutoff control section 1!1, and the scrap cutoff section 13) are housed in separate cases and formed as separate bodies. Therefore, a commonly used gas detection unit can be used. Kass utensils rcj to use! ! it.

Nine gas shielding parts (31 can be selected).

In other words, each grain scum detection section Ill and the scum cutoff section (31
It is designed so that a highly versatile system can be formed by combining them. In addition, the cut-off control unit (21 terminals IBL t
el is connected to the terminal 'tB)'IO)' of the cass interrupter 13).

Below is 5j! I will explain the operation of the example.

When a gas leak occurs, the alarm circuit I of the gas detection unit (1) is activated, and the light emitting diode (LDs) flickers and the buzzer (H2S) sounds to issue a cascade alarm. The waste detection number 4s<Va) is output. When this waste detection signal (Vo') is hti after a preset time, the % cutoff control unit 1! A gas cutoff signal (Vs) is output from ;, the gas cutoff section 13) is activated, and the supply of gas to the gas appliance is cut off. At this time, the buzzer circuit and operation display circuit are activated and the -j service is activated.
(BZ proverb) sounds and the light emitting diode F (LD lamp) flickers to notify that the gas cutoff section (3) has been activated. On the other hand, when shutting off the emergency Kfi, the shutoff control unit 1! A gas cutoff signal (Y3) is output from I11, and the gas cutoff section I11 is activated to cut off the supply of waste to the gas appliance. Furthermore, the scum can be shut off without stopping the scum main valve installed in the corner of one room, making the scum shutoff operation easier.

The present invention is configured as described above, and when a gas detection signal is obtained from the gas detection section, the IKfis disconnection section is activated to automatically cut off the waste supplied to the gas appliance. %K that safety will be ensured as gas leaks will not be left unattended.

A gas detection signal was set up in advance and was obtained over 9 o'clock at 9 o'clock.
Since the gas cut-off section is activated, the gas cut-off section will not malfunction and the gas will be shut off due to temporary gas leaks such as when ignition fails, and this has the advantage of being easy to use.

In addition, in the second invention, the gas cutoff section is actuated by operating the cutoff switch and the gas can be forcibly cut off, so if you want to cut off the gas urgently, you can turn off the one-source valve. It has the advantage of being able to easily shut off the Kfis without stopping it.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of the main part of an embodiment of the present invention, Fig. 2 is a specific circuit diagram of the main part of the same as above, Fig. 8 is a block circuit diagram of the main part of same as above, and Fig. 4 is a circuit diagram of the main part of same as above. Specific circuit diagram of Sugata part, Figure 6 is the same block circuit diagram of the inspector block as above, No. 6 WJ (a) (b
) is a sectional view showing the configuration and operation of the main parts of the same. 11) Gas detection section, (21 is a cutoff control section, and 3) Gas cutoff section s tQt) is a cutoff switch. Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

[Claims] A gas detection unit that detects Ill gas-〇 and outputs a detection signal, and a cutoff control unit that outputs a gas cutoff signal when a waste detection signal is obtained for a preset time or more. , t5
A gas cut-off section that operates in response to a gas pressure signal.
IT System・+21737. A gas detection part detects M leakage and outputs a gas detection signal, and when a scum detection signal is obtained for a preset time or longer, a cutoff switch is used to force a cutoff (when g is input, a gas cutoff signal is generated) a cutoff control section that outputs
A waste cut-off system that operates with a gas cut-off means that is activated by a gas cut-off signal. +3) Gas detection section, i&off control section and gas all
The scum isolation system according to claim 2, wherein the Ir portions are formed separately.