CN201851773U - Fuel gas safety warning indicator - Google Patents

Abstract

A device capable of indicating whether a coal gas valve is closed comprises a cam device, a limit switch, a display device (an indication lamp or a sound reminding device), a power supply, and the like. According to the device, people can judge the on-off state of the coal gas valve, thereby improving the use safety of the coal gas.

Description

The gas safe warning device

Affiliated technical field

Whether closed the utility model be a kind of indication gas valve device that relates to, and can determine warning form at the gas valve on off state according to customer requirements.

Background technique

At present, domestic gas when having made things convenient for people's daily life, if do not note service regeulations, brings huge hidden danger also can for people's safety.If do not close the total valve behind the gas meter after using, so, when the pressure in the fuel tube increases, just gas hose might be fallen from the metal tube drum.Cause the consequence that to imagine.In order to remind the combustion gas user after use, in time to close total valve, ensure everybody safety, made the gas valve status indicating device.

The model utility content

The technical problem that the utility model solves is, if domestic gas uses the back the total valve after not closing gas meter, when the pressure in the fuel tube increases, just gas hose might be roused from metal tube and fall, thereby cause adverse consequences such as gas leakage.In order to remind the combustion gas user after use, in time to close total valve, ensure the safety that combustion gas is used, made this device.

Device is by cam gear, limit switch, display unit (tutorial light or sound prompting device), formations such as power supply.It is characterized in that: in the rotating shaft of gas valve, increase a cam gear,, increase by a cover limit switch again in the back of gas valve.Limit switch, battery, electric wire and tutorial light (or sound equipment) constitute an indicator light circuit, when gas valve is opened, drive the limit switch closure, and tutorial light is lighted; When gas lockout valve, drive limit switch and disconnect, tutorial light extinguishes.This device can be installed in the valve place of gas pipe line.

The beneficial effects of the utility model are that gas valve can be indicated the state of gas valve break-make after increasing this device, thereby reminds combustion gas user timely throttle down after use, ensures the safety that combustion gas is used.

Description of drawings

Fig. 1 is the electrical schematic diagram of this device:

Limit switch is by cam driven, and cam is driven by gas valve, and when valve was transformed into opening state by closed condition, valve drove the make contact of cam with limit switch, and status indicator lamp is lighted; And after valve was got back to closed position, valve drove the contact disconnection of cam with limit switch, and tutorial light extinguishes.Like this, the position of valve just and the bright secret connection of tutorial light tied up to together: gas valve is open-minded, and tutorial light is lighted, the gas valve disconnection, tutorial light extinguishes.The principle that Here it is installs.Device is made up of limit switch, cam, battery, electric wire and tutorial light.Limit switch, battery, electric wire and tutorial light constitute an indicator light circuit.

Fig. 2 is a gas valve device schematic representation in the closed position:

As shown in Figure 2, " gas safe warning device " is made up of limit switch, cam, battery, electric wire and tutorial light etc., and device can be installed in the valve place of gas pipe line.

Fig. 2 shows that gas valve is in the closed position, and the cam on the valve is not had an effect to limit switch at this moment, and the contact of limit switch is in off position, and tutorial light extinguishes.

To be valve be transformed into schematic representation behind the opening state by closed condition to Fig. 3, and in transfer process, valve drives cam rotation, and cam is with the contact butt of limit switch, and tutorial light is lighted.

Thus, the bright secret connection of the position of valve and tutorial light is: gas valve is open-minded, and tutorial light is lighted; Gas valve turn-offs, and tutorial light extinguishes.This is the indication principle of " gas safe warning device ".

The top etc. that tutorial light can be placed on the dining table, be placed on backstairs significantly comes reminds people to note the state of valve in the position.If sound device in the parallel connection of the both sides of tutorial light can also be reminded by sound, as shown in Figure 4, this family in some visual aspects inconvenience also is essential.

Fig. 4 is the electrical schematic diagram after increasing the audio alert part on the basis of tutorial light, makes things convenient for this device of use of vision disorder personnel.Fig. 5 is not cams mounted as yet device schematic representation.

Embodiment

The technological scheme that its technical problem that solves the utility model adopts is: in the rotating shaft of gas valve, increase a cam gear, on the pipeline of gas valve back, increase by a cover limit switch again; When gas valve rotates, cam gear rotates thereupon, and cam gear can promote the limit switch action, thereby can control the switching of limit switch, so just with the on off state of limit switch with the state of gas valve get in touch, that is to say that the contact on the limit switch opens and closes and the switching of gas valve interrelates.Like this, when controlling a warning light or buzzer or other warning message devices with the contact of limit switch, can show the on off state of gas valve with warning light or buzzer or other warning message devices.

The beneficial effects of the utility model are, increase cam gear and limit switch simple in structure at burnt gas valve, be fit to again the alarm display apparatus of customer requirement by simple wiring and employing, whether show easily burnt gas valve for the opening state of supplying gas, ensure the safety of usefulness gas.

Claims (1)

1. gas safe warning device, by cam gear, limit switch, tutorial light or sound prompting display unit, formations such as power supply is characterized in that: in the rotating shaft of gas valve, increase a cam gear,, increase by a cover limit switch again in the back of gas valve.

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