JPH06178541A - Thyristor bulb - Google Patents

Abstract

PURPOSE:To provide a structure of thyristor bulb which reduces a load applied on an insulating member and a frame due to an external force such as earthquake and is preferable in strength. CONSTITUTION:A thyristor module 1, an insulating member 2 and a frame 3 for supporting the module are coupled as a block through a soft coupling member 4 in the serial direction. The soft coupling member 4 in the serial direction has a low rigidity in the horizontal direction. Thereby, when an external force is applied due to the earthquake, relative displacement by vibration between blocks coupled via soft coupling members can be absorbed by deformation of the soft coupling members to reduce vibration. Accordingly, a load applied on the insulating members and frames can be suppressed and vibrationproof characteristic can also be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thyristor valve, and more particularly to a structure that is advantageous in terms of earthquake resistance and strength.

[0002]

2. Description of the Related Art Japanese Patent Publication No. 59-3114 discloses a seismic resistant structure of a thyristor valve. This uses an insulating plate wall or an insulating rod for reinforcement. Also,
63-265042 discloses a seismic isolation method for supporting a thyristor valve by a lower seismic isolation unit and suspending it from an upper seismic isolation unit. This method improves the strength of the valve hole. There is a need.

[0003]

With the increase in voltage, the thyristor valve is multi-tiered to prevent external forces such as earthquakes.
The load that the insulating member and frame bear is increasing,
On the other hand, in order to obtain sufficient strength, it is necessary to take measures such as increasing the number of members.

An object of the present invention is to provide a structure of a thyristor valve which is advantageous in terms of strength by reducing a load applied to an insulating member and a frame by an external force such as an earthquake.

[0005]

In order to solve the above-mentioned problems, the present invention is characterized in that a structure including a flexible coupling member is provided when a block including a thyristor module, an insulating member and a frame is arranged. And

[0006]

With the structure in which the flexible coupling member is sandwiched between the arranged blocks, when the external force such as an earthquake is applied, the flexible coupling member is deformed so that the vibration between the blocks is difficult to be transmitted. Further, the vibration response can be reduced by utilizing the relative displacement between the blocks in the flexible joint to obtain the damping effect. Therefore, the load applied to the insulating member and the frame during an earthquake is reduced, and the structure is advantageous in terms of strength.

[0007]

EXAMPLES Examples of the present invention will be described below. In FIG. 1, the thyristor module 1 is fixed to an insulating member 2, and the insulating member 2 is joined to a frame 3 at the top and bottom. When these are arranged in the series direction as one block, they are connected via the series-direction flexible coupling member 4. As a result, when an external force such as an earthquake is applied, the series-direction flexible coupling member 4 is deformed as shown in FIG. A load such as a moment applied to the member 2 and the frame 3 is reduced.

FIG. 3 shows an example of a case where a plurality of blocks each including a thyristor module, an insulating member and a frame are arranged in a series direction, and at least one paragraph between the blocks is stacked through a series direction flexible coupling member 4. Indicates. As in the first stage and the second stage from the bottom in FIG. 3, the blocks to be connected without using the flexible coupling member may be rigidly fastened with bolts or the like.

FIG. 4 shows an example in which, when the blocks are arranged in the series direction and the parallel direction, one or more places between the blocks are connected to each other through the series direction flexible coupling member 4 or the parallel direction flexible coupling member 5. In this case, with respect to the series direction, as described in FIGS. 1 and 2, the series-direction flexible coupling member 4 alleviates the transmission of vibration between the upper and lower blocks. Furthermore, it is possible to reduce vibration by using the parallel direction flexible coupling member 5 by utilizing the relative displacement between the parallel block rows. For that, for parallel block sequences,
It is desirable that the vibration characteristics such as their natural frequencies are different, and this can be achieved by different materials and structures of the insulating member 2 and the frame 3 used for the block. It is also possible to change the material properties such as the rigidity of the in-line flexible coupling members 4 used in the rows. Further, the parallel-direction flexible connecting member 5 can be connected not only horizontally but also in a stepped manner or obliquely in a horizontal plane. Even if blocks that do not use the parallel-direction flexible connecting member 5 are rigidly connected. Good. further,
When the blocks are arranged in the series direction and the parallel direction, it is more effective to use the series direction flexible coupling member 4 and the parallel direction flexible coupling member 5 together, but it is also possible to apply either one between at least one block. Yes, at this time, other blocks may be rigidly connected.

FIG. 5 is a series-direction block row having a flexible structure using a series-direction flexible coupling member 4 between at least one paragraph of blocks, and a series-direction block row having a rigid structure that is fastened by fastening with bolts or the like. Is arranged in parallel, and the parallel direction flexible coupling member 5 is used between at least one block to be connected. By connecting in parallel a block row of a flexible structure having a low natural frequency and a block row of a rigid structure having a high natural frequency, it is possible to suppress the respective resonance states from each other due to the difference in vibration mode.

FIG. 6 shows a case in which a large number of blocks are arranged three-dimensionally in the series direction and the parallel direction, and at least one position between the blocks is connected by using the series-direction flexible coupling member 4 or the parallel-direction flexible coupling member 5. Indicates. Regarding the serial direction flexible coupling member 4, the material characteristics such as the rigidity thereof, the number of used and the position thereof are made different in each parallel block row, and the vibration characteristics such as the natural frequency of each parallel block row are different. It is desirable to set By doing so, the block rows arranged in parallel with respect to the same vibration input vibrate differently, so that large resonance of the entire thyristor valve can be avoided, while the parallel direction flexible coupling member 5 reduces vibration. Is improved. In addition, by considering the vibration characteristics of the parallel block rows, by arranging the parallel direction flexible coupling member at the antinode of the vibration mode in which resonance is desired to be suppressed or the vibration mode expected to be induced by an external force such as an earthquake. Therefore, the vibration response can be efficiently reduced.

In the above-described embodiment, the case where two thyristor modules are mounted on one block and they are supported by four insulating members has been described, but the number of them is not limited to this.

An embodiment of the series-direction flexible coupling member is shown in FIGS. In FIG. 7, the flexible coupling member in the serial direction is rubber 6
And the steel plate 7, and the rubber 6 and the steel plate 7 are alternately laminated. This supports the weight of the upper block,
Moreover, it has a low rigidity in the horizontal direction and has a flexible structure. FIG. 8 shows an example in which the coil spring 8 is used as the flexible coupling member.

Next, FIG. 9 shows an embodiment of a parallel direction flexible coupling member.
To FIG. With respect to the horizontal connection, a viscous damper or the like having a high damping effect as shown in FIG. 9 is effective because the relative displacement between the parallel blocks is utilized to improve the damping performance. 9 is composed of a cylinder 9 containing a viscous fluid 11 and a piston rod 10 having an orifice 12. When the cylinder 9 and the piston rod 10 are relatively displaced in the axial direction and the viscous fluid 11 passes through the orifice 12, Viscous resistance can be generated to obtain a damping effect,
It is mounted so that it is free from rotation with respect to the block using the link 13. In FIG. 10, the rubber 6 and the steel material 14 are used to absorb vibrations by the cushioning action of the rubber 6, and the end of the steel material 14 on the side not in contact with the rubber 6 is fastened to the block with a bolt or the like. 11 is composed of a rubber 6, a steel plate 7 and a rod 15, and the rubber 6 and the steel plate 7 are laminated alternately so as to allow vertical rotation with the block via a link 13 at the rod end. Is installed.

With respect to the flexible coupling members to be used, the positions and the number of the flexible coupling members to be arranged and the combination thereof can be selected.

[0016]

According to the present invention, the block provided with the thyristor module, the insulating member and the frame is arranged via the flexible coupling member so that the flexible coupling member is sandwiched when it is vibrated by an external force such as an earthquake. The relative displacement between the blocks is absorbed by the deformation of the flexible coupling member to reduce vibration. Therefore, the load such as the moment applied to the insulating member and the frame is reduced, and it becomes possible to use a simpler structure and material for the insulating member and the frame in the multi-stage stacking, and further, it is possible to reduce the weight. Therefore, it is possible to provide a thyristor valve having a structure advantageous in strength.

[Brief description of drawings]

FIG. 1 is a perspective view of a thyristor valve showing an embodiment of the present invention.

FIG. 2 is a perspective view of a thyristor valve for explaining the operation of the present invention.

FIG. 3 is a perspective view of a thyristor valve showing another embodiment of the present invention.

FIG. 4 is a perspective view of a thyristor valve showing another embodiment of the present invention.

FIG. 5 is a perspective view of a thyristor valve showing another embodiment of the present invention.

FIG. 6 is a perspective view of a thyristor valve showing another embodiment of the present invention.

FIG. 7 is a cross-sectional view showing an example of a serial direction flexible coupling member of the present invention.

FIG. 8 is a cross-sectional view showing another embodiment of the serial direction flexible coupling member of the present invention.

FIG. 9 is a cross-sectional view showing an embodiment of a parallel direction flexible coupling member of the present invention.

FIG. 10 is a cross-sectional view showing another embodiment of the parallel direction flexible coupling member of the present invention.

FIG. 11 is a cross-sectional view showing another embodiment of the parallel direction flexible coupling member of the present invention.

[Explanation of symbols]

1 ... Thyristor module, 2 ... Insulation member, 3 ... Frame, 4 ... Series direction flexible coupling member.

Claims (1)

[Claims] 1. A thyristor valve comprising a plurality of blocks including a thyristor module, an insulating member supporting the thyristor module, and a frame connecting the insulating members to each other, wherein the blocks are connected via a flexible joint member. Thyristor valve that is characterized.