JPS5824668A - Device for automatically closing gas valve under earthquake - Google Patents

Abstract

PURPOSE:To prevent the wrong action of a device in which a stopper for keeping a valve element open is released by the swing of a weight to close the valve element, by placing the weight in a high position which the hands of little children cannot reach and by coupling the weight and the stopper to each other through a wire. CONSTITUTION:A device for automatically closing a gas cock 4 under an earthquake is installed between the nozzle of a propane gas cylinder 28 and an indoor gas pipe. After a weight box 22 is secured on a wall 31 in such a position that a wire 23' protected by a tube 26 is tightened, setting work mentioned hereinafter is effected. An operating shaft 12' is horizontally turned by about 90 deg. against a plate spring 15. At the same time, a valve spindle 3 is turned by the same angle to open the valve element 2 of the cock 4. At the end of the turning operation, the operating shaft 12' pushes up a stopper 19 and is stopped in the turned position by the descent of the stopper, thereby completing the setting work. When the stopper 19 is pulled up by the swing of the weight 4 through the wire 23' at the occurrence of the earthquake, the valve element 22 is instantaneously closed by the force of the plate spring 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that automatically closes gas pipes when an earthquake occurs.

Conventionally, in gas pipes such as city gas and propane gas,
There is no equipment in place to automatically close gas pipes in the event of an earthquake, leaving everyone exposed to the risk of poisoning and fire due to gas leaks in the event of an earthquake. Therefore, the applicant developed and filed an application (Patent Application No. 174131 of 1982) for an automatic gas valve closing device that automatically closes the valve in the event of an earthquake. The valve body that closes the valve is locked by an operating plate/stopper that protrudes from the valve stem, and the stopper is disengaged from the operating plate by heavy vibrations linked to the stopper, so that the valve closes automatically. Since the weight is suspended close to the top of the valve body, it is easy for children to accidentally close the valve automatically.The present invention aims to eliminate the above-mentioned problems. The weight that operates the body stopper is installed in an upper position out of the reach of young children to prevent malfunction, and is activated only in the event of an earthquake to prevent disasters caused by gas leaks. be.

Hereinafter, the present invention will be explained in detail from the example diagram (second example).

A cock 4 is configured to open and close the valve by fitting two valve bodies 2 in the valve box 1 and rotating the valve stem 3 protruding from the valve body 2 by 90 degrees.
A tube body 5.5'' is connected to the front and back surfaces of the valve box l, a base is provided on the upper surface of the tube body 5.5 degrees, and a tube body 6 of an appropriate diameter and height is connected.
A shaft hole 8 for fitting the valve stem 3 is opened at the center of the bottom 1fi7 of the cylinder body 6, and a partition '@9 is provided inside the cylinder body 6 to provide a valve stem operating chamber lO. The legs @ 11° 11' protruding from the lower surface of the front and rear of 70 are fixed to the base of the pipe body 5.5°, and the upper end of the valve stem 3 is projected into the valve stem operating chamber 10 from the shaft hole 8 of the bottom @ 7. One end of an operating plate I2 that opens and closes the valve body 2 is fixed to the side surface of the valve stem 3 in the valve stem operating chamber 10, and is rotated counterclockwise to the tip of the operating plate 12 to the center position of the lower right side of the cylinder body 6. The l/4 circumferential groove 13 is opened closer to the center position of the lower back surface, and an operating shaft piece 12'' is provided protruding from the tip of the operating plate 12 to the outer surface of the circumferential groove 13, and is provided on the left side of the valve stem 3. A leaf spring 15 with one end fixed to the shaft 14 is made to revolve around the front of the valve stem 3 and the other end is engaged with the front center position of the operating plate 12, and the operating plate 12 is moved into the cylinder body 6 by the elasticity of the leaf spring I5. When the valve body 2 is rotated from the back side to the side face, the valve body 2 closes, and the stopper insertion hole 17-. A hole is opened at 17 degrees and guide tubes 18 and 18 degrees are attached to the upper surface, and the stopper 19 of the operating plate 12 is inserted into the guide tubes 18 and 18', and the lower end of the stopper 19 is used to rotate the operating plate 12. Two diagonal notches 20 are made so that it can be pushed up and passed during setting, and a stopper 19 and a partition plate 9 are provided.
A spring 21 is stretched between the ends of the weight box 22, and a weight 24 is suspended by a wire 23 at the center of the closed weight box 22. The wire 23 is tied to the upper end of a stopper 19 that hangs down from the hole 25 on the lower surface and protrudes from the upper surface of the cylinder 6.
° Shockproof automatic gas valve closing device 2 covered with tube 26
7. In addition, 28/ in the figure
fi propane gas cylinder, 29 is a joint, 30 is a pressure regulator, 31 is a wall surface.Next, the effects of the present invention will be explained with reference to embodiment diagrams.

The anti-seismic automatic gas valve closing device 27 according to the present invention is connected to a gas pipe for city gas, propane gas, etc.
As shown in the figure, a pipe body 5 is connected to the nozzle of an outdoor propane gas cylinder 28 using a joint 29 in a detachable manner, and a pressure regulator 30 is connected to the pipe body 5° to connect a gas pipe indoors. The weight box 22 is raised to a position where the wire 23' inside the tube 26 is tensed, and then secured to the wall surface 31 or the like. When narrating, hold the operating shaft piece 12' with your fingertips and guide the operation plate 12 from the right side of the cylinder 6 to the back side along the 1/4 circumferential groove I3. When the valve stem 3 is rotated 90 degrees while resisting the elasticity of the valve body 3, the hole in the valve body 2 communicates with the pipe body 5.'5', and the cock 4 is opened. The moved operating plate 12 comes into contact with the lower end notch 20 of the stopper 19, pushes the stopper 19 upward against the elasticity of the spring 21, and passes the stopper 19. After passing, the stopper 19 descends to lock the operating plate 12 and cock the cock. 4 is maintained in the open state.When an earthquake occurs, the weight 24 in the weight box 22 is
To pull the lower wire 23' while swinging,
The stopper 19 rises while resisting the elasticity of the spring 21, and the locking force of the operating plate 12 is released (from the second point).
The operating plate 12 is rotated rearward from the back surface to the side surface inside the cylinder 6 by the restoring elasticity of the reciprocating spring 15, so that the hole in the valve body 2 is closed, and the cock 4 is automatically closed to completely drain the gas. By installing the weight box 22 at the upper position of the wall surface 31, children cannot touch it, and while preventing automatic valve closing caused by children's mischief, it also prevents significant earthquake-like effects. 0 that plays

[Brief explanation of the drawing]

Figure i1 is a front view of the device according to the embodiment of the present invention, Figure 2 is its rear view, Figure 3 is its plan view, and Figure 4 is Figure 1A-
5 is a sectional view taken along line B-B in FIG. 4, and FIG. 6 is the same (sectional view taken along line C-C, and FIG. The figure is a plan view of the weight box 22, FIG. 9 is a sectional view taken along the line E-E, and FIG. 1O is a usage state diagram.

Claims (1)

[Claims] 1. The valve body 2 is inserted into the valve body 1, and the pipe bodies 5 and 5' are communicated with the valve body of the cock 4, which is opened and closed by the rotation of the valve stem 3, and a partition plate 9 is provided inside. Valve stem operating chamber 1 A cylinder 6 provided with an angle of 3°0 is installed above the pipe 5,5°, and the valve stem 3 of the cock 4 is inserted into the valve stem operating chamber 10 through a hole in the bottom plate of the cylinder 6. One end of the operating plate 12 is fixed to the valve stem 3 by protruding, and a 1/4 circumferential groove 13 is opened on the circumferential side of the cylinder body 6 facing the tip of the operating @ 12. Operation shaft piece 12゛ with 1/4 circumferential groove 1
The operating plate 12 is made to protrude outward from the valve stem operating chamber 10.
A resilient mechanism is provided for the return rotation of the cock 4, and the operating shaft piece 12' is connected to the operating plate 12 to open the cock 4.
/4 Stopper I9 for locking the operating plate 12 guided along the circumferential groove 13 and rotated against the elastic mechanism
is inserted into the stopper insertion hole provided in the upper surface plate 16 of the cylinder body 6 and the partition plate 9, and a weight 24 is suspended by a wire 23 at the center position in the closed weight box 22. Weight box 22
An anti-seismic automatic gas valve closing device characterized in that it is attached to a stopper -19 that hangs down from a hole in the lower surface of the cylinder body and protrudes from the upper surface of the cylinder body 6.