JPS5821076A - Automatic emergency valve - Google Patents

Abstract

PURPOSE:To enable reliably operating the valve even in the interruption of service due to occurrence of any abnormality in such a way that a solar battery is used as the working power source, and magnetic type solenoid valves are used for operating an emergency shut-off valve. CONSTITUTION:An emergency shut-off valve 11 is controlled by means of solenoid valves 8, 9. A solar battery 12, an automatic abnormality flow switch 14, a seismosensor 15, etc. are installed in a control circuit. In such a constitution, for example, in case where earthquake is overlapped with a cause of the occurrence of abnormal flow rate, the shut-off valve 11 is emergently shut off through the both solenoid valves 8, 9.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a proposal for an automatic emergency shutoff valve that is installed in a fluid distribution pipeline and is to be closed in an emergency due to the occurrence of an earthquake or the occurrence of an abnormal flow rate. Three solenoid valves to close the emergency shutoff valve are operated in conjunction with a seismic sensor and an abnormal flow rate sensing means, and the power source for operating these solenoid valves is constituted by a solar battery. By switching the energizing circuit to these solenoid valves, it is possible to configure both in parallel, in series, or to set only one of them to operate, and in practice, a magnet latch solenoid valve is used as the solenoid valve, and furthermore, a solar cell The battery is equipped with an overcharge prevention device and a backflow prevention device.

Next, the present invention will be explained with reference to the accompanying drawings. FIGS. 1 to 3 show an example of an emergency shutoff valve to be used in the present invention, in which the above-mentioned emergency shutoff valve of a Podida is provided with a secondary port 1, a secondary port 1, and a passage 3 communicating between these ports 1S2. A valve seat 5 is formed in the middle of a passage 3, and a valve body 7 having a diaphragm t is moved toward and away from the valve seat S to open and close the passage 3.1. is a magnetic latch solenoid valve, and these solenoid valves ff and 9 operate in connection with the earthquake sensor and the automatic abnormal flow switch, respectively. Further, 10 is a valve open/close display switch.

An automatic emergency valve according to the present invention, including, for example, the emergency shutoff valve l/, constitutes a circuit as shown in the following figures. That is,
Figure q shows a state in which a seismic sensor and an abnormal flow rate detection means are connected in series, 1 is a solar cell including a charger, 13 is its overcharge prevention device and backflow prevention device, and 1 is an abnormal flow rate. It is an automatic switch, which is turned on when the flow rate is high, and automatically returns to □ and turned off when the flow rate is low. /S is a seismic sensor, /A is an open pilot lamp relay, 17 is a closed pilot lamp relay, it is an abnormal flow rate relay, /? is a seismic sensor relay, -〇 is a time relay, 2/Fi return manual switch, n is a solenoid valve relay, n is a voltage test switch, J is a close test switch, jS and u are changeover switches for changing the circuit configuration. . In the circuit configuration shown in Figure 1, the emergency shutoff valve // is closed via the electromagnetic valves t and y when the causes of an earthquake and abnormal flow rate occur at the same time. Below, Fig. 3 shows a configuration in which the seismic sensor and the abnormal flow rate detection means are connected in parallel by switching the switch j1, and similarly, Fig. 6 shows only the seismic sensor. , FIG. 7 shows a circuit configuration that responds only to abnormal flow rates.

In either case, by using solar cells as the operating power source and a Magnelatte-type solenoid valve to operate the emergency shutoff valve, we have realized an automatic emergency valve that can operate reliably even during power outages due to abnormal situations. It could have been done.

[Brief explanation of the drawing]

Figures 1 to 3 are cross-sectional views, plan views, and front views showing one type of emergency shutoff valve used in this invention, and Figures 1 to 7 show four sides of the circuit configuration in this invention. It is a circuit diagram. In the figure, l - secondary port 3 secondary ports
road, body, valve
Seat diaphragm t valve
Body T1 Solenoid valve 10, Valve open/close display switch II Emergency shutoff valve C Abnormal flow rate automatic switch ls Earthquake sensor. Patent Applicant Kimitsu Kiko Co., Ltd. Procedural Amendment (Operation) February 24, 1980 Director General of the Patent Office Haruki Shimada Tono 1, Indication of the Case 1982 Patent Application No. 117178 2 Name of Gi 11 Vigilant No. 3, person making amendments Relationship with the case Poetry license applicant name 3'r, Kon Mean 1#C1 Co., Ltd. 4, agent address 4th floor, Sakura Masamune Building, 2-1-1 Nihonbashi, Chuo-ku, Tokyo Showa January 5, 57

Claims (1)

[Scope of Claims] l Three-cylinder solenoid valves for emergency closing of emergency shutoff valves provided in the fluid distribution pipeline are operated in conjunction with a seismic sensor and an abnormal flow rate sensing means.1. A solar battery is used as a power source for operating the solenoid valve, and by switching the energizing circuit between the solenoid valves, it is possible to configure both in parallel or series, or to set so that only one of them operates. Emergency automatic valve. The automatic emergency valve according to claim 1, wherein the solenoid valve is a magnet latch solenoid valve that opens and closes with pulses caused by short-time energization. 3. The automatic emergency valve according to claim 1, wherein the visitor battery is provided with an overcharge prevention device and a backflow prevention device.