JP2002004633A - Structure damping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide mixture stirring effect by moving a heavy muddy water in a damper up and down, maintain uniform viscosity and compatibly serve power generation with the production of a pressure air. SOLUTION: This structure damping device comprises a synchronous liquid damper 2 installed at the upper part of a building 1, a sealed reservoir 3 installed in the lower part or the underground part of the building, communication pipes 5, 6 connecting the damper 2 and the reservoir 3, the heavy muddy water 4 sealed in the damper 2 and the reservoir 3 and driving means 7 for vertically circulating the heavy muddy water 4 via the communication pipes 5, 6. An pressure air produced in the reservoir 3 is used as a pressure source for a power generating gas turbine, which serves to stop the circulation on detecting the vibration of the building and actuate the damper 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device for a structure using heavy muddy water.

[0002]

2. Description of the Related Art In high-rise building structures such as high-rise buildings and high piers, a vibration damping device is used in order to suppress shaking during an earthquake or a strong wind. Among the damping devices, devices that use the sloshing phenomenon of fluid include Shimizu,
And a device using heavy muddy water having a specific gravity heavier than water. The former device using water is suitable for securing drinking water, but requires a large tank capacity in order to cause an effective sloshing phenomenon. On the other hand, the latter device using heavy muddy water is a sloshing phenomenon due to a viscous liquid, so that the tank capacity for obtaining the same effect may be small. Therefore, this type of device is suitable as a vibration control device for a high-rise building structure such as a high pier that does not require drinking water.

[0003]

However, in the apparatus using the heavy muddy water, if the apparatus is allowed to stand at a cycle of about one day, the muddy water particles settle and the particles and water are separated from each other. Even if shaking occurs in the state, the function of the viscous liquid cannot be instantaneously exhibited, so that it is necessary to periodically stir and mix using a stirrer, which is uneconomical.

[0004] Recently, a CAES system is called, in which compressed air driven by a compressor using electric power at night is stored in an underground tank, and during the daytime, the compressed air is used as a pressure source to drive a gas turbine. A method of generating power has been developed.

The present invention is an application of the above-described power generation method to the maintenance of heavy muddy water stored in a vibration damping device.
The purpose is to move the heavy muddy water in the vibration damping device up and down to obtain mixing and agitation, to maintain a uniform viscosity, and to control electric power using compressed air. A vibration device is provided.

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a tunable liquid damping system installed at the top of a building and a sealed storage tank installed at the bottom or underground of the building. A communication pipe connecting the apparatus and the storage tank, and a driving means for vertically circulating heavy muddy water sealed in the apparatus and the storage tank through the communication pipe, and a pressure generated in the storage tank. It is characterized by using air as a power source. Therefore, in the present invention, sedimentation of the mud particles is prevented by circulating the heavy mud up and down, and the function as the vibration damping device can be constantly maintained. Further, since the compressed air generated in the storage tank can be used as a power source, the cost for private power generation can be reduced.

In the present invention, it is preferable that the circulation is stopped by detecting the vibration of the building and the vibration damping device is operated. Further, the circulating drive means may be a pump for pumping water, or may use a pressure of pressurized air generated in the storage tank. Further, the circulating drive means is driven by using nighttime electric power, so that the maintenance cost can be reduced.

[0008]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a first embodiment of the present invention. In the figure,
On the roof of the high-rise building 1, a tuned liquid damper 2 is installed, and in the basement of the building 1, a closed storage tank 3 is arranged. Each heavy muddy water 4 is sealed at the water level.

The heavy muddy water 4 is obtained by uniformly dispersing and mixing muddy water materials such as bentonite, a pH adjuster, a surfactant and other additives in water with a specific gravity of 1.4 to 2.0 and a viscosity of 30 to 1000.
It is a viscous solution of cps, and although the particles are adjusted so that they do not easily settle by the addition of additives, they settle by standing for more than one day, and the uniformity of the solution is impaired. I have.

[0010] The damping device 2 and the storage tank 3 are connected by a pair of communication pipes 5 and 6, one of which is a riser pipe 5 and the other is a downcomer pipe 6. A pump 7 for pumping and a solenoid stop valve 8 are arranged in the pipeline of the riser pipe 5, and a check valve 9 and a solenoid stop valve 10 are also arranged in the pipeline of the downcomer 6. By driving, the heavy muddy water 4 enclosed in each is circulated as shown by an arrow.

An air vent pipe 11 is disposed above the storage tank 3 and can be opened and closed by a solenoid type air vent valve 14 having a check mechanism, and a pressure sensor 16 is disposed inside. . In addition, piping 1 for air release
Although not shown, 2 is connected to the pressure source of the gas turbine for power generation and opens the air release valve 14 in a state where the internal pressure is increased,
It is designed to supply pressurized air.

Further, reference numeral 17 denotes a vibration sensor 17 disposed on the roof of the building 1, and each of the above sensors 16, 1
7 is input to the control unit 18. Control unit 18
Is for controlling the opening and closing of each of the valves 8, 10, and 14 and for controlling the drive stop of the pump 7 according to the outputs of the built-in timer and these sensors.

First, in the daytime, the pump 7 is stopped and the stop valves 8 and 10 are closed, so that the vibration damping device 2 is kept in a standby state for vibration applied to the building 1. The heavy muddy water 4 in the vibration damping device 2 is sloshing, and exhibits a normal vibration damping effect.

Next, at the time of the nighttime power use time period, in the state where the signal from the vibration sensor 17 is not inputted,
By opening the air vent valve 14, opening the stop valve 7, and driving the pump 7, the heavy muddy water 4 in the storage tank 3
Once to the damping device side 2 and then the air release valve 1
By repeating the cycle of closing the stop valve 4 and opening the stop valve 10, the heavy muddy water 4 stored in the apparatus 2 is lowered into the storage tank 3 side, and the particles of the heavy muddy water are uniformly dispersed by the stirring action of this circulation. And regenerate it into a sloshing liquid. Also,
By repeating the above cycle, the air in the storage tank 3 is repeatedly supplied and compressed, and sequentially becomes high in pressure.

During this cycle, the vibration sensor 1
When the vibration picks up, the pump 7 is stopped and the stop valves 8 and 10 are switched to the closed state, as in the daytime, thereby exhibiting a vibration damping effect. If the vibration stops
The same cycle as described above is repeated until the end of the night power use time period, and after the time period, the state returns to the daytime standby state. The high-pressure air stored in the storage tank 3 can be effectively used as auxiliary power for in-house power generation by supplying the high-pressure air to the gas turbine for power generation. FIG. 2 shows a second embodiment of the present invention. Although the reference numerals are the same as those of the first embodiment, the basic structure is the same except that the transfer direction of the pump 7 and the direction of the check valve 9 are different, and the device 2 side is opened for standby. . In this case, the internal pressure of the storage tank 3 is increased by transferring the heavy muddy water 4 in the device 2 into the storage tank 3 by the drive of the pump 7, and then the stop valve 10 is opened by the air pressure. Heavy mud 4 once stored in 3
Is repeated in the apparatus.

In each of the above embodiments, a pump is used as a means for transporting heavy muddy water. However, compressed air is introduced into the storage tank 3 by the power of a compressor, and this air pressure
It is also possible to circulate the heavy muddy water 4.

FIGS. 3A to 3C show the basic structure of the third embodiment utilizing the above-described compressor power. In the figure, an air introduction pipe 20 and an air discharge pipe 21 are provided on both sides of the storage tank 3, and can be opened and closed by supply and discharge air valves 22 and 23, respectively. The air introduction pipe 20 is connected to a compressor (not shown) operated by night power, and the air discharge pipe 21 is also connected to a high-pressure air source of a gas turbine (not shown). The apparatus 2 and the storage tank 3 are connected by one communication pipe 24, and the pipe can be opened and closed by a stop valve 25 provided in the pipe.

As shown in FIG. 2A, when the supply side air valve 22 is opened, the discharge side air valve 23 is closed, and the stop valve 25 is opened in a state where the internal pressure is increased while the compressor is being driven, the communication pipe is opened. The heavy muddy water 4 stored in the storage tank 3 through 24 rises and is supplied to the apparatus 2 side. Next, when the drive of the compressor is stopped, the supply side air valve 22 is closed, and the discharge side air valve 23 is opened, the inside of the storage tank 3 is depressurized,
As shown in (b), the heavy muddy water 14 on the device 2 side descends,
It is returned to the storage tank 3 again.

By repeating the above cycle, heavy muddy water 1
4 is stirred to form a uniform mixed solution. The released air is used as an air pressure source for a gas turbine. Further, when the vibration sensor detects vibration even in the daytime or at night, as shown in FIG.
5 is closed, and both air valves 22 and 23 are closed, so that the device 2 performs a damping action by a normal sloshing operation.

[0020]

As is clear from the above description, according to the vibration damping device for a structure according to the present invention, the mixing and stirring effect can be obtained by moving the heavy muddy water in the vibration damping device up and down. At the same time that the viscosity can be maintained, electric power can be generated by the generated compressed air. In addition, maintenance costs can be reduced by performing the work using nighttime power.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram according to a first embodiment of the present invention.

FIG. 2 is a system configuration diagram according to a second embodiment of the present invention.

FIGS. 3A, 3B, and 3C are explanatory diagrams illustrating an operation principle according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 High-rise building 2 Synchronous liquid system vibration device 3 Storage tank 4 Heavy muddy water 5, 6, 25 Communication pipe 7 Pump 17 Vibration sensor

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yozo Goto 4-640 Shimoseito, Kiyose-shi, Tokyo Inside Obayashi Corporation Technical Research Institute (72) Inventor Masao Hayashi 131-7 Wakamatsu, Abiko-shi, Chiba F-term (reference) 2D059 AA03 GG05 3J048 AB07 BF11 BF16 EA38 5H590 AA02 AA10 CA30 FA01

Claims (5)

[Claims] 1. A tunable liquid damping device installed at an upper part of a building, a sealed storage tank installed at a lower part or underground part of a building, a communication pipe connecting the device and the storage tank, and the device. A driving means for vertically circulating heavy muddy water sealed inside and in the storage tank through the communication pipe, and using the pressurized air generated in the storage tank as a power source. Shaking device. 2. The structure vibration damping device according to claim 1, wherein the circulation is stopped by detecting the vibration of the building, and the vibration damping device is operated. 3. The structure vibration damping device according to claim 1, wherein said circulation driving means is a pump for pumping water. 4. The vibration damping device for a structure according to claim 1, wherein said circulating drive means utilizes the pressure of the compressed air generated in the storage tank. 5. The vibration damping device for a structure according to claim 2, wherein the circulating drive unit is driven by using nighttime electric power.