JPH02166309A - Device of shutting gas at falling down - Google Patents

Abstract

PURPOSE:To close the gas inlet side or the gas outlet side in a wall chamber by a method wherein a wall chamber with a built-in spherical body is provided in a gas passage part, and during inclination or falling down of a device, the spherical body is moved. CONSTITUTION:When a device is inclined or rolled rearwardly, a spherical body 9 is separated away from an arc recessed part 8a of a bed seat 8 and moved to a wall chamber 7a for adhesion thereto to close an outlet passage 12. When it inclines falls down frontwardly, the spherical body 9 is separated away from the arc recessed part 8a of the bed seat 8 and moved to make tight contact with a wall chamber 7b to close the inlet passage 11 side.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a safety device for a combustor using gas, oil, or the like as fuel.

Conventional technology Conventionally, a tilt switch using mercury has been generally used in the thermocouple circuit installed in the burner as a safety device in the event of a fall of the combustor. The contact separated from the mercury, disconnected the circuit, connected to the thermocouple, and closed the solenoid valve supplying combustion to the burner.

An example of the above-mentioned conventional fall safety device will be described below with reference to the drawings.

FIG. 7 shows an example of a conventional combustor in which a tilt switch using mercury is connected to a thermocouple circuit connected to a solenoid valve as a safety device.

The gas passes through the solenoid valve l and is supplied to the burner 3 via the orifice 2, where it becomes a flame 4 and is combusted. The solenoid valve 1 is kept open by the electromotive force of the thermocouple 5 located within the flame 4, and the contacts 6a and 6b of the tilt switch 6 connected to the thermocouple 5 are electrically connected through the water 116C. It is something. If the combustor is tilted or overturned due to some action at this time, the tilt switch 6 will also tilt as shown in Figure 8, the contact 6b will be separated from the mercury 6c, the contacts 6a and 6b will be open, and the thermocouple The electromotive force of 5 is not supplied to the solenoid valve 1, so the solenoid valve 1 is closed and the combustion of the burner 3 is stopped.

Problems to be Solved by the Invention However, as is well known in recent years due to the problem of disposal of dry cell batteries, this tilt switch using mercury can also pose a major pollution problem due to its disposal method.

The present invention solves the above-mentioned problems and provides a gas cutoff device in the event of an overturning, which directly closes a gas passage when a combustor tilts or overturns.

Means for Solving the Problems The present invention provides a wall chamber containing a sphere in a gas passage section,
When the instrument is tilted or falls over, the movement of the sphere closes the gas inlet or outlet side of the wall chamber.

According to the above means, the gas passage can be directly closed when the instrument is tilted or falls over, and can be used as a safety device in place of a tilt switch using mercury.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1(a), Φ) shows the gas cutoff device at the time of fall of the present invention (
FIG. 2 is a plan view and a sectional view of a main part of the device (hereinafter referred to as the present device).

Reference numeral 7 denotes the present device, and 7a and 7b denote wall chambers with spherical inner surfaces, which are arranged side by side. 8 is a wall chamber 7a.

It is a flat pedestal formed at the bottom of 7b, and has an arcuate recess 8a in the center in which a sphere, which will be described later, is accommodated. Reference numeral 9 is a spherical body made of stainless steel or the like, and is housed in the arcuate recess 8a of the base 8 during normal times. Gas enters from the inlet passage 11 of the wall chamber 7b and enters the wall chamber 7a.
exit passageway 12 and flow in the direction of arrow 10.

The operation of this apparatus configured as described above will be explained below. FIG. 2 shows that when the device tilts backward or falls over, the sphere 9 separates from the arcuate recess 8a of the pedestal 8, moves to the wall chamber 7a, and comes into close contact with the wall chamber 7a, closing the outlet passage 12 side.

FIG. 3 shows that when the device tilts forward or falls over, the sphere 9 separates from the arcuate recess 8a of the pedestal 8, moves to the wall chamber 7b, and comes into close contact with the wall chamber 7b, closing the entrance passage 11 side. Figure 4 shows the state when the device is tilted to the left or overturned.
Similarly to the figure, the sphere 9 closes the gas outlet passage 12 side.

FIG. 5 shows a state in which the device is tilted or overturned to the right, and the gas inlet side is blocked as in FIG. 3.

Further, FIG. 6 shows an embodiment of a gas combustor using the safety device according to claim (2).

The gas passes through the solenoid valve lO integrated with the gas cutoff device 7 when the appliance falls over, is supplied to the burner 12 via the orifice 11, becomes a flame 13 and burns, and the electromotive force of the thermocouple 14 located within the combustion 13 Therefore, the solenoid valve 10 is kept open, and the gas combustor is performing normal combustion.

If the gas combustor tilts or falls at this time, as shown in Figures 1 to 5, the gas cutoff device 7
is activated to stop the flow of gas to the burner 12 and stop combustion, and the electromotive force of the thermocouple 14 decreases to close the solenoid valve 10.

Effects of the Invention As described above, the present invention can directly stop the flow of gas when a gas combustor, etc. tilts or falls over, so it is possible to directly stop the flow of gas. Even if the equipment (equipment, etc.) is out of order, combustion can be stopped and no dangerous situation occurs, and there are no pollution problems related to the disposal of equipment that uses mercury or the like.

[Brief explanation of the drawing]

FIGS. 1(a) and 1(b) are a plan view and a sectional view of essential parts of a gas cutoff device in the event of a fall in an embodiment of the present invention, and FIG.
6 to 6 are operational diagrams of the gas cutoff device in the event of an overturning according to the present invention, FIG. 7 is a side view of a gas combustor equipped with a conventional gas cutoff device in the event of an overturning, and FIG. 8 is a side view of the same operation. It is. 7... Gas cutoff device in the event of a fall, 7a, 7b, old.
- Wall chamber, 9... sphere, lO... solenoid valve, 12... burner, 14... thermocouple.

Claims (2)

[Claims] (1) A wall chamber containing a sphere made of stainless steel or the like and having a spherical inner surface is provided in the middle of the gas passage, and when the gas combustor, etc. tilts or falls over, the sphere moves inside the wall chamber and A gas cutoff device in the event of a fall, which closes off at least one of the inlet passageway and the outlet passageway. (2) A gas cutoff device is installed in the gas passage between a solenoid valve that is opened by the electromotive force of a thermocouple or the like heated by the burner and the burner to which gas is supplied via this solenoid valve. Gas cutoff device.