JPS60942B2 - Earthquake-resistant electrical equipment - Google Patents

Description

[Detailed description of the invention] This invention relates to earthquake-resistant electrical equipment.

For example, in power systems, many electrical devices are installed on the ground, but as the power transmission voltage has tended to increase in recent years, the height of these electrical devices has gradually increased, and as a result, earthquakes, etc. It has become necessary to improve the seismic resistance of these electrical devices so that they can withstand earthquakes.

In order to improve the earthquake resistance of secondary structures, electrical devices are reinforced with braces, strips, strips, and pipes with larger diameters, and with stays and strips. According to this, these things are removed, children are removed, and peeled off.
It is also common practice to suspend Q-mata electrical equipment, which is extremely expensive and economically uneconomical, using iron twills. According to this method, when an earthquake occurs, the lower end is suspended by using the supporting part as a fulcrum. This is advantageous because seismic forces do not directly act on the electrical equipment as it sways, but on the other hand, the mechanical strength must be sufficiently high to withstand these seismic forces as a steel railing for suspension. In addition, there are disadvantages such as the need to perform special work on the wiring of the control circuit led to the ground because the lower end of the electrical equipment swings, and both of these become uneconomical. Furthermore, it may not be possible to manufacture high-voltage, ultra-high-voltage, or even ultra-super-high-voltage electrical equipment for salt damage resistance that satisfies the required seismic performance. In view of the above-mentioned problems, this invention is designed to blow air onto the foundation surface when an earthquake occurs, and to lift the entire electrical device above the foundation surface so that the electrical device is not affected by the acceleration of the earthquake.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes an electrical device such as an ultra-high voltage or ultra-super high voltage instrument transformer, and an air blowing mechanism 3 such as an air bearing is provided on the base surface 2 side. ing.

This air blowing mechanism 3 is connected to a connecting pipe 7 via a valve 6 such as a solenoid valve to an air storage tank 5 attached to a pedestal 4 of the electrical device 1 or the like. Reference numeral 8 denotes an earthquake detector such as an earthquake relay having a built-in battery, and the opening and closing of the valve 6 is controlled by the operation of this earthquake detector 8.

The operating setting value of the earthquake detector 8 is determined by the mechanical strength of the electrical device 1 and the dimensions of the part that is in constant contact with the foundation surface 2. For example, 50 chicks 1 (98 female al = 1
0), and the valve 6 may be kept open for several minutes. Further, the air storage tank 5 and the air blowing force of the air blowing mechanism 3 may be set such that the electric device 1 floats several tens of degrees or more above the base surface 2. In addition, when multiple electric devices 1 are installed in close proximity, one set of the gas storage tank 5, the earthquake detector 8, and the valve 6 is prepared, and the gas storage tank 5 and each electric device 1 can be connected flexibly. The structure may be simplified by connecting them with a connecting pipe 7. In addition, the air storage tank 5, the earthquake detector 8, and the valve 6 are installed on the foundation surface 2 side, which is the earth, and the air blowing mechanism 3 provided in the electrical device 1 and the air storage tank 5 are connected through the valve 6. The weight of the entire device may be reduced by connecting with a flexible connecting pipe 7. With the above configuration, if an earthquake that is greater than the operating setting value of the earthquake detector 5 strikes, the shaking of the foundation surface 2 due to this will cause the electric equipment to
However, at the same time, the earthquake detector 5 operates, and the valve 6 is immediately opened, and the air stored in the air storage tank 5 is blown out from the air blowing mechanism 3 to the foundation surface 2 side, and the electrical device 1 is levitated. Therefore, the electric device 1 is not subjected to acceleration due to an earthquake.

As detailed above, according to the present invention, it is possible to improve the seismic performance of this type of device with a simple structure without making the structure of the electrical device itself seismic.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a plan view thereof. 1: Electrical equipment, 2: Foundation surface, 3: Air blowing mechanism, 5
: Air storage tank, 6: Valve, 7: Connecting pipe, 8: Earthquake detector. 1 picture of bamboo 2 pictures of soup

Claims (1)

[Scope of Claims] 1. An earthquake-resistant electrical device that blows air out onto a foundation surface in the event of an earthquake so that the entire electrical device floats above the foundation surface. 2. An air blowing mechanism provided on the base side of the electrical equipment;
The earthquake-resistant electric device according to claim 1, which is formed by connecting an air storage tank attached to the electric device. 3. The earthquake-resistant electric device according to claim 1 or 2, wherein a valve interposed between the air blowing mechanism and the air storage tank is opened by the operation of an earthquake detector.