JPS5944855A - Gas insulated water cooling type thyristor bulb - Google Patents

Abstract

PURPOSE:To prevent other thyristor module to be wet by water leaking from a certain thyristor module by accommodating a thyristor bulb where a plurality of thyristor modules are arranged in lateral in a tank filled with an insulating gas. CONSTITUTION:A thyristor module 1 is supported by an insulating bar 20, which is supported by a tank 21 through an insulator 5. A thyristor bulb 22 is constituted by arranging in lateral a plurality of thyristor modules 1 between the insulating bars 20. The thyristor modules 1 are electrically connected in series and both ends thereof are connected to a bushing 7 provided outside of the tank 21 through a main circuit conductor 6. In both sides of the thyristor bulb 22, the main cooling pipes 8a, 8b are provided as the piping for cooling water and these are extended to the outside of tank 21 through a hermetically sealed terminal 23.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a thyristor valve used for direct current power transmission or interconnection between different frequency power systems, and particularly relates to a gas insulated thyristor valve that is cooled by water. Seki, do it.

[Technical background of the invention and its problems]

In recent years, advances in semiconductor devices have been remarkable.
Electrical valves and star valves that use this thyristor element are becoming more and more popular over the years. Follow'C its high'ili,
With the increase in power consumption and large currents, the problem has become how to cool the equipment with a small impact and a large amount of current. Regarding the former, it is possible to convert it into a JS-J component by storing the t:L S・F risk valve in a tank filled with SF and gas static membranes with high transmissive filF.

(The latter has a high cooling effect and low cost.)
It is also possible to use water as a cooling medium. However, when cooling a thermostat valve used at high voltage with water in one tank, the problem arises that the cooling water leaks. In particular, it is extremely important to take measures to prevent a drop in dielectric strength in the event of water leakage into a product, and it is difficult to use this Nyristor valve. has not been put into practical use until now. For high voltage and zero power! 9...
Fig. 1 shows an example of the f lister valve circuit.

In Figure 110, ゛[, l are connected in series, f2a several 9' inverters, a, no F reactor, voltage dividing resistor, voltage dividing capacitor, ignition circuit for Nyristor, etc. are connected in a frame. This is the placed Cyrisk module.

This thyristor module 1 is connected to C
A plurality of insulating gases 3 such as Jl, 5Fl1, etc. are stacked vertically and filled in a female tank 4. 5
is an insulator that supports the J or F lister module 1. The cyrisk module 1 is electrically connected in series with the main circuit conductor 6 on both sides of the main circuit conductor 6, which is connected to the hole and the bushing 7 formed outside the L-return switch. At both ends of the thyristor module 1 are cooling main piping made of insulators. a.

8b is arranged and led out to the outside of the tank 4 via an airtight terminal 9, and is connected to the famous silisk module 1 and the main cooling pipe 8.
What are a and 8b? The water drilled into the branch pipes ioa and joh is from tank 4 and I? 1) The main pipe 8a and the branch pipe 10a are led into the thyristor module 1 through the eaves, and are led out of the tank 4 through the main pipe 8b and the branch pipe 10b1.

In this way, in the #+lI J"L R Nyristor valve, for example, if water leaks in the topmost thyristor module 1, the leaked cooling water will sequentially fall to the thyristor module 1 at the top. The bottom row is for O7 who will be doing it! Components inside the I-4 risk module ((cooling)
Damage due to insulation deterioration due to the application of k! l: All of the insulators 2 and thyristors will fire (this will also cause dielectric breakdown in the light guide that transmits No. 6, leading to a huge failure of the iris valve.・In the G iris valve which is formed by controlling the thyristor module 1 in multiple stages downward, due to water leakage that has risen to one thyristor module 1, the other・Not only will it cause serious damage to Iristamodicor I and insulator 2, but it will also cause maintenance problems.
During inspection, water leaks from many parts, so a lot of time is required, and the gap between the ribs will last for a while. This means that only the risk valve F) body will be connected to the bottom of the body. In case of cooling water leakage, quick and easy maintenance is possible at; !F, highly reliable gas-insulated water-cooled thyristor valve. [Summary of the Invention] The present invention has two objects: In order to achieve the above two objects, a plurality of thyristor modules are arranged in a horizontal direction, and a thyristor valve is arranged in a plurality of thyristor modules so that the A gas-insulated water-cooled iris valve fC4iM is housed in the filled tank.

[Embodiments of the invention]

The first embodiment of the present invention will be explained with reference to FIGS. 2 to 4.0 In FIGS. 2 to 4, the same parts as in FIG. In the 08112 diagram shown in FIG. , a number of Cyrisk modules 1 are arranged laterally between the insulating columns 20 C4'
8 has been completed. The Cyrisk module 1 is electrically connected in series, and both ends are connected to the outside of the tank 2).
r + erected (connected by shishing 7 to main circuit conductor 6'[5 erected'(+,)Z). Cooling water is supplied to both ii + 11 of the zuirista valve 22;
A and 8b are placed and drawn out to the outside of the tank 21 via the airtight terminal 23. tank 2
In the evening of 1, cooling J-beggar, +7 p, and 8
11. The uppermost pump 24, -f A converter 25, and heat exchanger 26 are connected to each other.

Inside tank 2, there is a 16mm cooling main pipe, IIA.

8b Who is G.F. Listabo; Jules 1 and eyes: ? 1H
141 Branch as water piping l t, + a, 10
connected by b.

1 piece of cooling water, cooling %3a above, is distributed to each branch pipe 1θa to cool the Irista module 1, and is heated to the branch pipe 10b1 cooling main pipe 8b. It is collected as Guhi water.

This warmed ice is cooled by the heat exchanger 26, and
The purity is controlled by the liquid exchanger 25, and the purity is controlled by the pump 24.
1) and sent to the cooling main part 8a. Takaichi.

Pure water is preferable as cooling water for feeding month 1. Count, : 1 IXl's ㅅf risk, ? The thyristors 30 and 31 are connected in series. J-
3.? Ka handling 1iL a n'c il c+! l"(
! The gate of J raster θ is provided with an ignition circuit 34 and a light guide 35 for controlling the ignition circuit 34 and the gate.

Figure 4 shows an example of the 4') configuration of the zuirista module in Figure 2. It is made up of 4 tuff thorns that are connected to each other, and the cooling water is placed between the 40 cooling fins.
11: It is connected to the insulating tube 42 at t°C.

Further, the voltage dividing resistor 32 is constructed by attaching a resistor 44 to a cooling fin 43, and the cooling fins 43 are connected by an insulating tube 45 without cooling water.

The γ-node trickle 31 is formed of a tubular conductor 46'fC in the form of a coil, with the conductor 46 serving as a cooling water 99 passage. 47 is a frame in which the components of the above-mentioned thyristor module 1 are arranged. Cooling water is cooling distribution g1
3a, it is introduced into the Two-Iristor module 1 through a branch pipe 10a and distributed to each component. The water heated by cooling each component is collected in the branch pipe 10b and led out to the main cooling pipe 8b. In addition, each ignition circuit 34
The light guide 35 connected to the thyristor module 1 is led out to the outside of the thyristor module 1. Even if water leaks inside the thyristor module 1, other thyristor modules 1 will not be exposed to cooling water.

Therefore, the second maintenance inspection can be performed easily and quickly for the thyristor module in which water leakage has occurred. Explain with reference to.

In Figure 5, C1 cooling main pipes 8a, 8b and branch pipe 1
0tt, 10b are arranged at the bottom of the iris module 1. Further, a light guide 35 for transmitting optical signals for the gate system 4'1 TII is led out from the top of each Zuiristar module 1.

In this embodiment, since the cooling earthen floor Wg&+8b is arranged at the bottom of the thyristor module 1, the thyristor module 1 can be easily pulled out from the insulating column in the direction of arrow A during maintenance 2 inspection. . Furthermore, since the light guide 35 is made of quartz (J-shirasu) insulator, if it gets wet with cooling water, it will cause an absolute failure, resulting in a serious failure. Since the thyristor module 1 is disposed above the thyristor module 1, the two-light guide 35 is not affected even if water leaks in the thyristor module 1.

Next, a third embodiment of the present invention will be described with reference to FIG. 816.

In Fig. 86, 60 is a water receptacle, which is tilted at appropriate angles t, r, and θ degrees.

“If there are 4 cases of A, fruit, V, ′, and L in [Iru 0 Follow-), then the width of J is due to some reason, A, Kau, ′3. I am good at watering; I am able to do the 1 o'clock I'V millet in a short period of time for 9 points of kidney preservation. It is supported in the lower C tank 21 and placed in the tank 21.

A first embodiment of the present invention will be described with reference to FIG.

El (, r1 In the figure, a water leak detection device 70 is installed to detect 9 L of cooling water collected in the water receiver 6o. This is detected, and the presence or absence of water leakage can be displayed on the display circuit 73 provided outside the tank 21 via the airtight terminal 72 based on the detection result shown in the sensor leaf 1. If it is installed on the wood flow side, water leakage can be detected quickly, making maintenance and inspection easier.

(Effects of the Invention) According to the present invention, as explained above, since the gas is not applied to a certain siter module, serious failures can be prevented and maintenance and inspection can be carried out quickly. We can provide water-cooled equipment.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a conventional gas-water cooled valve (IJ star valve), Fig. 2 (a) is a block diagram showing the first embodiment of the present invention, and Fig. 2 (b) is a block diagram of the i-n' 3N is a circuit diagram of the thyristor module in FIG. 2, FIG. 4 is a configuration diagram of the thyristor module in FIG. 2, and FIG. 5 is a second embodiment of the present invention. Configuration diagram, FIG. 6 1; 1 Third aspect of the present invention
01°°゛Thyristor module, 3゛...Insulating gas, 5...Insulator ( supporting member)
, 8a, 8b... Cooling main piping (cooling water piping), 1oa
, tob...branch pipe (cooling water piping), 2Q...insulation support (support member), 21...tank, 22...small iris valve, 30°°thyristor, 31...anode reactor , 32...min Y [capacitor, 3
3... Voltage dividing resistor, 35... Light guide, 60
...Water receiver, 70...Water leakage detection device. (7317) Agent Bentanshi Noriyuki Chika (1 person) 1'J1 Figure 2 Figure 3 Figure 4 Figure 46/

Claims (5)

[Claims] (1) A silister module consisting of a tank filled with insulating gas, a thyristor, an anode reactor, a voltage dividing capacitor, a voltage dividing resistor, a light guide that transmits a signal for igniting the thyristor, etc. ,
A plurality of these thyristor modules are arranged in the horizontal direction, and cooling water is introduced and led out between the supporting part side that insulates and supports the electrically connected thyristor valve in the tank, the outside of the tank, and the inside of the thyristor module. 1. A gas insulated water-cooled ZIRISTA pulp, characterized in that it is equipped with a cooling water piping provided for the purpose of cooling water. (2) The gas-insulated water-cooled thyristor valve 0 according to claim 1, characterized in that a cooling water pipe is arranged below the thyristor module. (3) Feature a' characterized in that the two light guides are led out from the upper part of the thyristor module.
``Gas insulated water-cooled P-Iristor valve as set forth in item 1 or 2 of the scope of the request. (4) The gas insulation according to claim 1 or 2 or 3, wherein the support member has an inclined water receiver located below the thyristor module. Water-cooled type Nyristabalp. (5) The gas-insulated water-cooled thyristor pulp according to claim 4, wherein the water receiver has a water leak detection device for detecting collected water.