JPH07203680A - Thyristor valve - Google Patents

Abstract

(57) [Summary] [Structure] A module 1 including a thyristor element and its peripheral circuits is provided with an upper module 10 and a lower module 11.
The upper part of the module 1 is suspended by the support rod 2,
The whole is suspended by the hanging member 4 from the ceiling of the valve hole 5. The module 1 is installed on the installation floor 6 by the pillar 3 at the lower part. The module groups are connected to each other by a connecting member 7. [Effect] The total weight of the module supported by the support member at the installation end is reduced. By restraining the divided module groups from each other, vibration during an earthquake is reduced, and the load applied to the supporting part is reduced, enabling a simpler structure to be supported.

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 advantageous in strength against an external force such as an earthquake.

[0002]

2. Description of the Related Art In a thyristor valve, it is necessary to assemble a group of thyristor elements at predetermined intervals according to the voltage used to secure an insulation distance. The thyristor element is fixed to the tray and constitutes a module. Since the withstand voltage of the elements assembled on one module is limited, a high voltage is dealt with by stacking a plurality of modules in layers. For this reason, the structure becomes large, and it is supported by increasing the number of columns. Regarding the structure of the thyristor valve, there is Japanese Patent Publication No. 59-3114. According to the present invention, the strength of the support member is increased to cope with an earthquake load, and the deformation of the thyristor valve at the time of an earthquake is reduced, thereby making it possible to reduce the floor area of the valve hole to be stored.

[0003]

As the voltage to be handled increases, the number of modules that can be stacked increases, and the frame assembled by the support members also becomes long. As a result, the weight of the frame that must be supported has increased, and it has become necessary to take measures such as increasing the number of support members to make the structure strong against external forces such as earthquakes. In addition, the deformation of the thyristor valve during an earthquake becomes large, so it is necessary to increase the volume of the valve hole in order to secure the insulation distance.

An object of the present invention is to improve the length of the thyristor valve by devising the method of supporting the module group, so that the load applied to the strut member during an earthquake can be more effectively dispersed and the deformation of the thyristor valve can be reduced. To provide the structure.

[0005]

In order to achieve the above object, the module groups to be stacked are divided into two, the upper module group is suspended from the valve hole upper part, and one lower module group is suspended. It is characterized by being installed on the fixed floor.

Further, a member for connecting the upper and lower divided module groups is provided, and the connecting member is a member having a vibration damping performance such as a damper.

[0007]

The module is divided into two module groups, and the module group is divided and supported by the upper portion and the lower portion, thereby reducing the total weight of the modules carried by the support member at the installation end. As a result, the load applied to the support member that supports the thyristor valve at the time of an earthquake is reduced, and the support member can be configured with a simpler structure. In addition, in the thyristor valve in which the upper part and the lower part are connected and supported, relative deformation between the modules is restrained, vibration of the module group is reduced by the energy absorbing action of the connecting member, and the conductor wire connected between the modules is reduced. It is possible to reduce the relative displacement of peripheral devices such as.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a thyristor element and its peripheral circuits are mounted on a tray to form a module 1.
The plurality of modules 1 are installed in a hierarchical manner at regular intervals by a supporting member made of an insulating material. The plurality of modules 1 to be installed are divided into two, and the upper module group 10 uses the support rods 2 as support members to hang the modules 1 and install them in a hierarchical structure. The upper module group 10 is suspended and supported by the hanging member 4 from the valve hole ceiling portion 5. On the other hand, the lower module group 11 is
The modules 1 are installed in a hierarchical manner by using the pillars 3 as support members, and the pillars 3 are installed on the installation floor 6.

In the upper module group 10, the support rod 2 and the hanging member 4 support the own weight of the module group 10, but do not restrain the moment due to the horizontal movement of the module group 10. As a result, the upper module group 10 constitutes a pendulum vibration system, and its natural frequency is 0.5 Hz or less. Since the frequency range is lower than 2 Hz to 10 Hz which is the frequency range of the external earthquake force, large vibration is not excited in the upper module 10 and the seismic load applied to the support member of the module 1 is small.

By dividing the module into two, it is possible to reduce the load applied to the support rod 2 and the pillar 3 which are module supporting members, as compared with the case where all the modules are supported by suspension or installed on the installation floor. it can.

FIG. 2 shows a second embodiment of the present invention. The lowermost part of the upper module group 10 and the lower module group 11
And the uppermost part of are connected using the connecting member 7. The length of the connecting member 7 is determined so that the load is not normally applied. When the module vibrates during an earthquake, the load due to the deformation is transmitted through the connecting member 7. Since the upper module group 10 and the lower module group 11 have different vibration shapes due to their installation conditions, forces for mutually restraining the two module groups act via the connecting member 7. As a result, vibration during an earthquake is reduced. Furthermore, since the connecting member 7 restricts the relative displacement of the two module groups in the horizontal direction, the conductor wire 8 extending between the module groups is not excessively deformed, so that the length thereof can be shortened.

FIG. 3 shows a third embodiment in which a connecting member is used for connection. In order to apply the restraint in the horizontal direction of each module group more effectively, the pillar 3 and the frame 9 made of an insulating material are assembled on the upper part of the lower module group 11,
And the upper module group 10 are connected by the connecting member 7. By arranging the connecting member 7 in the horizontal direction in which the upper and lower modules are relatively deformed, the mutual deformation of the modules is effectively restrained, and the vibration is reduced. The restraining effect of the connecting member 7 can be adjusted by using an elastic member as the member. Further, since the connecting member 7 can be installed in a portion where the electric field is uniform, it is possible to use a non-insulating material as the material of the connecting member 7, and the degree of freedom in structure selection is widened.

FIG. 4 shows an embodiment of the connecting member 7. In this embodiment, the energy absorption effect is realized by using a damper structure. The connecting member is a cylinder 12 and a piston 1.
3, and the viscous fluid 14 is enclosed in the cylinder 12. Air or silicone resin fluid can be used as the viscous fluid. The piston 13 is provided with an orifice 15 through which the viscous fluid 14 flows. When the cylinder 12 and the piston 13 move relative to each other, the viscous fluid 14 passes through the orifice 15 and the resistance force at that time absorbs energy.

By using the connecting member shown in FIG. 4 in the embodiment shown in FIGS. 2 to 3, the vibration energy generated in the module group is absorbed, and the vibration can be reduced. In the case of applying to FIG. 2, it is necessary to configure the connecting member using an insulating material. When applied to FIG. 3, there is no restriction on the material, and a metal material can also be used.

[0015]

According to the present invention, by dividing the module group and supporting the thyristor valve at two locations, the upper portion and the lower portion, the weight of the module supported at each location is reduced, and the modules vibrate during an earthquake. By doing so, the seismic load applied to the support member is reduced. Further, the suspended module group has a low natural frequency due to the hanging structure, and thus vibration is less likely to occur. As a result, the vibration of the relatively heavy module is reduced, so that the load applied to the support member is reduced, and it is possible to support the module with a simpler structure.

Further, in the structure in which the upper and lower module groups are connected to each other, the upper and lower parts vibrate in different modes, so that mutual vibrations can be restrained and reduced. The vibration reducing effect is improved by forming the connecting member with an energy absorbing member such as a damper.

[Brief description of drawings]

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

FIG. 2 is a front view of a thyristor valve showing a second embodiment of the present invention.

FIG. 3 is a front view of a thyristor valve showing a third embodiment of the present invention.

FIG. 4 is a sectional view showing an embodiment of a connecting member of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Module, 2 ... Support rod, 3 ... Support post, 4 ... Hanging member, 5 ... Valve hole, 6 ... Installation floor, 7 ... Connection member, 10 ... Upper module group, 11 ... Lower module group, 12 ... Cylinder, 13 ... Piston, 14 ... Viscous fluid.

Claims (3)

[Claims] 1. A thyristor comprising a thyristor element and its peripheral circuit, a module comprising a tray on which the thyristor element and its peripheral circuit are mounted, and a supporting member made of an insulating material for vertically stacking the plurality of modules. In the valve, the plurality of modules are roughly divided into an upper part and a lower part, the upper module group is suspended from above the valve hole for accommodating the thyristor valve, and the lower module group is installed on the installation floor. Characteristic thyristor valve. 2. The thyristor valve according to claim 1, wherein the lowermost portion of the upper module group and the uppermost portion of the lower module group are connected by a connecting member. 3. The thyristor valve according to claim 2, wherein the connecting member is an energy absorbing member such as a damper.