JP2003082715A - Disaster preventive system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disaster preventive system for dispensing with a power source and a compressor, causing no stoppage of the vibration damping function of a vibration damping overhead water tank even at power failure time, and usable without restricting supply of water to water supply equipment by using pressurized air from an air cylinder for sending the pressurizing air to the vibration damping overhead water tank, and using a pump for operating with this pressure air as a motive power source. SOLUTION: This disaster preventive system is provided with the vibration damping overhead water tank 1 for maintaining the vibration damping function by always pressurizing an inside water surface by the pressurized air from the air cylinder, the pump 10 for operating in emergency with the pressurized air as the motive power source, and the water supply equipment 7 arranged on the tip of this pump 10. The water surface in the vibration damping overhead water tank 1 is increased and pressurized by the pressurized air in emergency, and water in the vibration damping overhead water tank 1 can be supplied to the water supply equipment 7 from the pump 10 by operating the pump 10.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disaster prevention system in which water in an elevated water tank for vibration suppression is used for water supply equipment in an emergency. 2. Description of the Related Art A conventional disaster prevention system of this type will be described with reference to FIG. In FIG. 2, reference numeral 1 denotes an elevated water tank for vibration suppression installed on the roof of a building or the like; 2, a compressor for supplying pressurized air to the elevated water tank for vibration control 1 via a pressurized pipe 3;
, A drain pipe led out from the bottom of the vibration-suppressing elevated water tank 1, 6 a drain valve provided in the drain pipe 5, and 7 a water supply facility disposed in front of the drain pipe 5. [0003] The compressor 2 is normally driven by a power supply to constantly pressurize the water surface in the vibration-supplying water tank 1 with pressurized air, thereby maintaining the vibration-suppressing function of the vibration-supplying water tank 1. Therefore, in the event of an earthquake or typhoon, air pressure acts on the water surface in the vibration-suppressing elevated water tank 1, so that the vibration frequency of the U-shaped tank is synchronized with the vibration frequency of the building, and a dynamic vibration absorbing function acts to attenuate the vibration of the building. That is, a damping action is performed. In an emergency, for example, after an earthquake, the drain valve 6 of the vibration control elevated water tank 1 is opened to supply the water in the vibration control elevated water tank 1 to the water supply equipment 7 to supply emergency drinking water, miscellaneous water, and cooling water. (For example, for generators). [0004] However, in such a conventional disaster prevention system, if the power outage is prolonged due to an earthquake or typhoon, the compressor 2 does not operate, so that the water level in the vibration-suppressing elevated water tank 1 is reduced. Since the pressurization is constantly stopped and the vibration damping function of the elevated water tank 1 for damping does not work, and the necessary pressurization is not made even if it is used for the subsequent water use, especially for emergency drinking water and cooling water. There is a problem that the range of available water use is limited. SUMMARY OF THE INVENTION [0005] The present invention has been made to solve such a problem, and uses compressed air from an air cylinder to send compressed air to an elevated water tank for vibration suppression. The use of a pump that operates with pressurized air as a power source eliminates the need for a power supply and compressor, prevents the vibration suppression function of the vibration suppression elevated water tank from stopping even in the event of a power outage, and supplies water to water supply equipment. Available without restriction. An embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram showing the entire system.
In the figure, the same or corresponding parts as those of the conventional system are denoted by the same reference numerals, and description thereof is omitted. In the drawing, 8 is an air cylinder, 9 is a pressure reducing valve for reducing the pressure of air from the air cylinder 8, 10 is a pump provided in the drain pipe 5, 11 is a driving unit of the pump 10 from the pressurizing pipe 3. A drive pipe branched to 10a, 12 is provided in the drive pipe 11, and an operation unit 12a of the drive pipe 11
, An increasing pressure pipe which branches from the driving pipe 11 ahead of the opening valve 12 and is connected to the pressurizing pipe 3 near the vibration control elevated water tank 1, and 15 is provided in the increasing pressure pipe 14 The check valve 16 is an operation pipe branched from the drive pipe 11 to the operation section 6 a of the drain valve 6. Normally, the pressure air in the air cylinder 8 is depressurized by the pressure reducing valve 9 and guided to the pressure regulating valve 4, where it is adjusted to the air chamber pressure value of the vibration-supplying elevated water tank 1 determined from the vibration-damping characteristics. . In this case, since the opening valve 12 and the drain valve 6 are in the closed state, the pump 10 is stopped. Therefore, at the time of an earthquake or a typhoon, the vibration-suppressing elevated water tank 1 performs a vibration-suppressing action. Next, in an emergency, for example, after an earthquake, a drainage command 13 is issued.
, The operating unit 12a is operated to open the release valve 12, and the decompressed compressed air enters the drive pipe 11. The drive unit 10a is driven by the pressurized air to operate the pump 10, and the operation unit 6a is operated to open the drain valve 6,
By the driving force of the pump 10, water is pumped from the vibration-suppressing elevated water tank 1 to the water supply facility 7 via the drain valve 6. At the time of this drainage, the water surface in the vibration-suppressing elevated water tank 1 is increased by the increasing pressure pipe 14 to smooth the drainage. In the above description, a water supply system 7 for emergency drinking water, miscellaneous water, cooling water (for example, for a generator), etc. is provided in front of the pump 10, but fire extinguishing is performed in place of the water supply system 7. Equipment or a combination of both may be provided.
In the case of fire extinguishing equipment, a fire detector or the like is used as the drainage command 13. As described above, according to the present invention, there is provided a pump that utilizes pressure air from an air cylinder to send pressurized air to an elevated water tank for vibration suppression, and that operates using the pressurized air as a power source. Since it is used, the power supply and the compressor are not required, and the vibration control function of the vibration control elevated water tank does not stop even during a power outage, and the effect that the water supply to the water supply equipment can be used without restriction is obtained. .

[Brief description of the drawings] FIG. 1 is a schematic diagram showing an embodiment of the present invention. FIG. 2 is a schematic diagram showing a conventional system. [Explanation of symbols] 1 Elevated water tank for vibration suppression 3 Pressurized piping 4 Pressure regulating valve 5 drainage pipe 6 drain valve 7 Water supply facilities 8 Air cylinder 9 Pressure reducing valve 10 pumps 11 Drive piping 12 Release valve 13 Wastewater Directive 14 Increasing pressure piping 16 Operation piping

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Yoichi Suga             8-20 Asahi-cho, Nagasaki-shi, Nagasaki Pal Corporation             In the structure (72) Inventor Noriaki Araki             3-5, Shodenda, Hirakata City, Osaka Stock             Hatsuda Factory F term (reference) 2E189 BB08 BD06

Claims (1)

Claims: 1. An elevated water tank for vibration suppression, in which an internal water surface is constantly pressurized by pressure air from an air cylinder to maintain a vibration suppression function, and operates using the pressure air as a power source in an emergency. Pump, and a water supply facility disposed ahead of the pump. In an emergency, the water pressure in the vibration suppression elevated water tank is increased by the pressurized air, and the pump is operated, whereby the vibration suppression A disaster prevention system, wherein water in an elevated water tank can be supplied from the pump to a water supply facility or the like.