JPH08166100A - Water-cooled thyristor module - Google Patents

Abstract

PURPOSE: To prevent dielectric breakdown of module component parts by forming water-leading grooves by notching the upper surface of a drain flange to lead leaked water collected on a module frame bottom plate from water- cooled cooling means to a drain hole. CONSTITUTION: Based on the assumption that leaked water 10 from a module component part 22 is accumulating on a module frame bottom plate 2, the leaked water 10 reaches to bottom portion of water-leading grooves 3 on a flange 1 for water drain. Then, it is discharged from the water-leading grooves 3 into a through hole 1a, then to a water-cooled module in a following stage. Accordingly, leak water 10 is discharged from the water leading channels 3 before being accumulated up to an uppermost surface of the flange 1 for drain, and then reaches to a leak water detector 23 via a water-cooled module in a lower stage. Leaked water 10 is thus rapidly detected. Thus, dielectric breakdown of module component parts due to leak water is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-cooled thyristor module of a high voltage thyristor device used for DC power transmission.

[0002]

2. Description of the Related Art FIG. 17 is a side view showing an outline of a conventional multi-stage water-cooled thyristor module, FIG. 18 is a plan view showing the arrangement of module components, and FIG. 19 is a side view of a water-cooled thyristor module. 20 is a cross-sectional view of the drainage flange, FIG. 21 is a partial cross-sectional view showing a state in which leak water has accumulated to the height of the drainage flange, and FIG. 22 is a partial cross-sectional view showing a state in which leak water overflows the drainage flange.
FIG. 23 is a partial cross-sectional view showing a state in which the leaked water that has flowed down from the upper water-cooled thyristor module onto the funnel is scattered, FIG. 24 is a side view showing a state where the leaked water is accumulated on the insulating plate, and FIG. 25 is a Teflon pipe and nipple. And FIG. 26 is a partial cross-sectional view showing a state where the cooling water leaks from the joint portion with and is accumulated on the module frame bottom plate, and FIG. 26 is a portion showing the state where the cooling water leaks and is scattered from the joint portion with the Teflon pipe and the nipple. FIG. In the drawing, 1 is a drainage flange formed in an annular shape having a drainage through hole 1a in the center, 2 is a module frame bottom plate for supporting module components from below, 2a is a drainage hole, and 6 is from above. A funnel that captures and collects the leaked leaked water 10, 11 is a condenser, 13 is an insulating plate, 14 is a insulator provided between the insulating plate 13 and the module frame bottom plate 2 in order to insulate them, and 15 is a water-cooled cooling means. , A Teflon pipe for flowing cooling water, which is a constituent element of the water cooling system, 16 is a nipple which is a constituent element of the water cooling type cooling means, 18 is a cooling fin which is a constituent element of the water cooling type cooling means, and 22 is a thyristor element 2 connected in series.
5 is a module component in which a water cooling resistor 24 and a capacitor 11 which are its associated circuits are arranged on an insulating plate 13, 23 is a water leak detector, 26 is a stack, and 27 is a terminal.

Next, the operation will be described. When the cooling water leaks between the Teflon pipe 15 and the nipple 16 through which the cooling water shown in FIG. 19 leaks, the leaked cooling water, that is, the leaked water 10 accumulates on the module frame bottom plate 2 as shown in FIG. . When the water leakage 10 reaches the height of the drainage flange 1 shown in FIG. 21, it overflows the drainage flange 1 as shown in FIG. 22, and the drainage flange 1 of the lower water-cooled thyristor module shown in FIG. Is collected and flowed down by the funnel 6 provided in
It reaches the water leak detector 23 provided further below, and the water leak in the module component 22 is detected.

[0004]

Since the conventional water-cooled thyristor module is constructed as described above, even if water leakage occurs in the module component 22, the water leakage 10 overflows the drainage flange 1 and is drained. There was a problem that it took a certain amount of time for the water to leak, and during that time no leak was detected. Further, when the leaked water 10 passes through the through hole 1a of the drainage flange 1 and the funnel 6, the leaked water 10 is scattered to the module components 22 below or in the surroundings, which causes a dielectric breakdown of the module components 22. It was
Further, the leaked water 10 accumulates on the insulating plate 13 to cause a creeping discharge between the capacitors 11, and
There was also a problem that the insulation breakdown occurred.

The present invention has been made in order to solve the above-mentioned problems, and quickly leaks water in a module component to make it easy to detect, and prevents dielectric breakdown of the module component due to the water leakage. The purpose is to obtain a water-cooled thyristor module.

[0006]

A water-cooled thyristor module according to a first aspect of the present invention is provided with a water guide groove in which an upper surface of a drainage flange is absent in order to guide a leaked water accumulated on a module frame bottom plate to a drain hole. It was formed.

In the water-cooled thyristor module according to the second aspect of the present invention, a rectifying member, which is formed in a tubular shape in order to regulate the flow of water leaking through the drainage flange, and the inner wall surface of which is pleated, is provided for drainage. It is provided on the flange.

In the water-cooled thyristor module according to the invention of claim 3, a funnel for collecting and collecting leaked water discharged from the water-cooled thyristor module located above is provided on the drainage flange, and the leaked water is prevented from scattering. In order to do so, the funnel is provided with a sheet for preventing water splashing, which has an elongated hole-shaped cut portion and is formed so as to be placed on the inner peripheral surface of the funnel.

In the water-cooled thyristor module according to the invention of claim 4, the bottom of the module frame bottom plate is inclined toward the drain hole, and the drain hole and the drainage flange are provided at the lowest position of the module frame bottom plate. It is a thing.

In the water-cooled thyristor module according to the invention of claim 5, a slit which is a through hole is provided in the insulating plate.

In the water-cooled thyristor module according to the invention of claim 6, a water guide plate for collecting and collecting the cooling water leaking from the water-cooled cooling means and guiding it to the drain hole is provided below the water-cooled cooling means. is there.

A water-cooled thyristor module according to a seventh aspect of the present invention includes a cladding tube which covers a portion of the water-cooled cooling means where water may leak and prevents the water from scattering around.
The water-cooled cooling means is provided with a cap for receiving splashed water leakage, which includes a rectifying pipe that communicates with the cladding pipe and rectifies and discharges leakage water inside the cladding pipe to a module frame bottom plate.

In the water-cooled thyristor module according to the invention of claim 8, one or more partition plates are erected on the module frame bottom plate to divide the module frame bottom plate into a plurality of sections, and the divided module frame bottom plates. Each of them is provided with a drainage hole and a drainage flange.

[0014]

In the water-cooled thyristor module according to the first aspect of the invention, since the water guide groove is formed in the drainage flange, the time taken for the leaked water to overflow the drainage flange can be shortened. Water can be quickly drained, and water leaks in module components can be quickly detected.

In the water-cooled thyristor module according to the second aspect of the present invention, the rectifying member is provided on the drainage flange to prevent the leakage of water and to prevent the dielectric breakdown of the module components due to the water leakage in the module components. To prevent.

In the water-cooled thyristor module according to the third aspect of the present invention, the funnel for capturing and collecting the leakage is provided on the drainage flange, and the leakage preventing sheet for preventing the leakage is provided on the funnel. It is possible to prevent the leakage of water and prevent the dielectric breakdown of the module components due to the leakage of the components.

In the water-cooled thyristor module according to the invention of claim 4, the module frame bottom plate is bent or curved so as to be convex downward, and the drain hole and the drainage flange are provided at the lowest position of the module frame bottom plate. As a result, the leaked water accumulated on the bottom plate of the module frame can be quickly drained, and the leaked water in the module components can be quickly detected.

In the water-cooled thyristor module according to the fifth aspect of the invention, since the insulating plate is provided with a plurality of slits, which are through holes, it is possible to prevent leakage of water from accumulating in the insulating plate, and to prevent dielectric breakdown of module components due to leakage of water. To do.

In the water-cooled thyristor module according to the invention of claim 6, a water guide plate for collecting and collecting the cooling water leaking from the water-cooled cooling means and guiding it to the drain hole is provided below the water-cooled cooling means. Leakage water can be drained quickly, and leaks can be detected quickly.

In the water-cooled thyristor module according to the invention of claim 7, the splash-cooled water receiving cap is provided in the water-cooled cooling means to prevent the splash of the leaked water and prevent the dielectric breakdown of the module components due to the leaked water. To do.

In the water-cooled thyristor module according to the invention of claim 8, one or more partition plates are erected on the module frame bottom plate to divide the module frame bottom plate into a plurality of sections, and the divided module frame bottom plates are By providing a drain hole and drain flange for each, it is possible to shorten the time until the leak overflows the drain flange, so it is possible to quickly drain the leak water that has accumulated on the module frame bottom plate. Quickly detect water leaks in parts.

[0022]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a drainage flange according to an embodiment of the present invention, and FIG. 2 is a plan view thereof. Corresponding parts shown in FIGS. The description is omitted. In the figure, 1 is a drainage flange, 1a is a through hole, 3 is a top surface of the drainage flange 1 for guiding the leaked water 10 accumulated on a module frame bottom plate 2 (not shown) to the through hole 1a leading to the drainage hole 2a. It is a water conduit that is absent in the depth.

Next, the operation will be described. In FIG. 1, it is assumed that the leaked water 10 from the module component 22 shown in FIG. 17 is being collected on the module frame bottom plate 2. When the water leak 10 reaches the bottom of the water guiding groove 3 of the drainage flange 1, thereafter, the water guiding groove 3 passes through the through hole 1a,
It is discharged to the lower water-cooled module. Therefore,
According to the configuration of the first embodiment, the leaked water 10 is discharged from the water guiding groove 3 before being accumulated up to the uppermost surface of the drainage flange 1, and reaches the leak detector 23 shown in FIG. 17 through the lower water-cooled module. Therefore, the water leak 10 can be detected more quickly than in the past.

Embodiment 2 FIG. 3 is a perspective view showing a flow regulating member according to an embodiment of the present invention, FIG. 4 is a sectional view showing a state in which the flow regulating member is provided on a drainage flange, and FIG. 5 is a plan view thereof. Is the through hole 1 of the drainage flange 1
A cylindrical straightening member 5 having an outer diameter that can be inserted into a is a pleated portion provided parallel to the longitudinal direction of the inner wall of the straightening member 4.

Next, the operation will be described. In the figure,
Leakage (not shown) is rectified by flowing down along the folds 5 of the rectifying member 4. Therefore, according to the configuration of the second embodiment, it is possible to prevent the leakage of water and to prevent the dielectric breakdown of the module component 22 due to the water leakage. Further, maintenance such as replacement of parts due to such dielectric breakdown can be eliminated.

Example 3. FIG. 6 is a cross-sectional view showing a state in which a water leakage prevention sheet according to an embodiment of the present invention is provided on a funnel, and FIG. 7 is a plan view thereof, in which 6 is a water-cooled type not shown in the figure. A funnel 7 for capturing and collecting the water leaked from the thyristor module, 7 is formed in a shape corresponding to the side surface of the truncated cone so that it can be placed on the inner surface of the funnel 6, and a plurality of slotted notches 9 are provided radially. The water splash prevention sheet 8 is an attachment portion for fixing the water splash prevention sheet 7 to the inner surface of the funnel 6.

Next, the operation will be described. In the figure,
Now, it is assumed that leaked water has fallen into the funnel 6 from the drainage flange 1 of the upper water-cooled thyristor module (not shown). This water leakage is due to the cutout portion 9 of the water leakage prevention sheet 7.
And flows through the funnel 6 while being rectified by the cut portion 9. Therefore, according to the configuration of the third embodiment, it is possible to prevent the splashing of the leaked water, and thus to prevent the dielectric breakdown of the module component 22 shown in FIG. Further, maintenance such as replacement of parts due to this dielectric breakdown can be eliminated.

Example 4. FIG. 8 is a sectional view showing a module frame bottom plate according to an embodiment of the present invention. In the figure, 2b is an inclined portion formed by bending the module frame bottom plate 2 so as to be convex downward. Further, the module frame bottom plate 2 is provided with a drainage hole 2a and a drainage flange 1 at the lowest position of the module frame bottom plate 2.

Next, the operation will be described. In the figure,
Leakage 1 from the module component 22 shown in FIG.
It is assumed that 0 leaks to the module frame bottom plate 2. The water leak 10 flows down along the slope on the slope 2b of the module frame bottom plate 2 and flows to the drainage flange 1.
That is, since the drainage hole 2a and the drainage flange 1 are provided at the lowest position of the module frame bottom plate 2, the water leak 10 is faster in the drainage flange 1 than the conventional horizontal module frame bottom plate 2. Will be reached. Therefore, according to the configuration of the fourth embodiment, as shown in FIG.
In FIG. 7, the water leak 10 quickly reaches the water leak detector 23 through the lower water-cooled module, so that the water leak 10 can be detected more quickly than in the conventional case.

Example 5. FIG. 9 is a partial sectional view showing a slit provided in an insulating plate according to an embodiment of the present invention, and FIG.
Is a plan view thereof, and in the figure, 11 is a capacitor,
Reference numeral 12 is a slit that is a through hole provided in a portion of the insulating plate 13 located between the capacitors 11.

Next, the operation will be described. In the figure,
Now, it is assumed that the leaked water that has fallen from the drainage flange 1 of the upper water-cooled thyristor module shown in FIG. 17 is scattered inside the funnel 6 and adheres to the condenser 11. At this time, in FIG. 9, the water leaked to the capacitor 11 flows down along the surface of the capacitor 11 and reaches the insulating plate 13 below the capacitor 11. Then, it flows into the slit 12 provided in the insulating plate 13 and drops to the module frame bottom plate 2 below. Therefore, according to the configuration of the fifth embodiment, the leaked water 10 collects on the insulating plate 13 to cause a creeping discharge between the capacitors 11 and the capacitor 11 concerned.
Can be prevented from dielectric breakdown. Further, maintenance such as replacement of the capacitor 11 due to this dielectric breakdown can be eliminated.

Example 6. FIG. 11 is a perspective view showing a water guide plate according to an embodiment of the present invention, and FIG. 12 is a partial cross-sectional view showing a state in which the water guide plate is provided on a drainage flange. Is a water guide plate formed to have a substantially wedge shape so as to be captured and collected, and is formed so as to widen the upper part and close the lower part, and 18 is a cooling fin (water cooling type cooling means). Further, the water guide plate 17 is provided with one end fixed to the upper surface of the drainage flange 1 so as to be inclined so that the leaked water 10 captured and collected can be guided to the drain hole 2a.

Next, the operation will be described. In FIG. 12, it is assumed that the cooling water is leaking from the nipple (water cooling type cooling means) 16. This water leak 10 is captured and collected by the inclined water guide plate 17, and reaches the drainage flange 1 quickly and accurately, and as a result, also reaches the water leak detector 23 shown in FIG. Therefore, according to the configuration of the sixth embodiment, water leak detection can be performed quickly and accurately.

Example 7. FIG. 13 is a perspective view showing a splash water leakage receiving cap according to an embodiment of the present invention, FIG. 14 is a side view thereof, and FIG. 15 is a side view showing a usage state of the splash water leakage receiving cap. Reference numeral 15 is a component of the water-cooling type cooling means, a Teflon pipe for passing cooling water, 16 is a nipple, and 19 is a hollow structure for covering the vicinity of the nipple 16 and preventing the leakage of water to the surroundings. It is provided with a covering pipe 19a formed in a cylindrical shape, and a rectifying pipe 19b for communicating one end with the covering pipe 19a to rectify and discharge the leaked water in the covering pipe 19a to the module frame bottom plate 2 and to provide two pipes in the axial direction of the cylinder. It is a cap for receiving splashed water leakage that is formed so as to be divided.

Next, the operation will be described. In the figure,
Now, it is assumed that the cooling water is violently leaking from the nipple 16 in the scattered water leakage receiving cap 19 and is scattered. The scattered leaked water 10 is not scattered to the outside by the coating pipe 19a of the splashed water leakage receiving cap 19 provided around the nipple 16, but is rectified and discharged by the rectifying pipe 19b, and is discharged to a predetermined portion of the lower module frame bottom plate 2. run down. Therefore, according to the configuration of the seventh embodiment, the water leakage 1
It is possible to prevent dielectric breakdown of the module component 22 due to scattering of zero. Further, maintenance such as replacement of parts due to this dielectric breakdown can be eliminated.

Example 8. FIG. 16 is a sectional view showing a partition plate erected on a module frame bottom plate according to an embodiment of the present invention. In the figure, reference numeral 21 denotes the module frame bottom plate 2 for dividing the module frame bottom plate 2 into two. A partition plate which is erected on the upper side, and 22 are module components. Each of the module frame bottom plates 2 thus divided by the partition plate 21 is provided with a drainage hole 2 a and a drainage flange 1. Also partition 2
The height of 1 is formed higher than the height of the drainage flange 1.

Next, the operation will be described. In the figure,
Now, it is assumed that the water leaked from the module component 22 is collected in one of the module frame bottom plates 2 partitioned by the partition plate 21. Compared to the conventional case in which the partition plate 21 is not provided in this case, the volume of the area where the leaked water 10 accumulates is half, so that the leaked water 10 overflows the drainage flange 1 and the leaked water is detected. It takes half the time. Therefore, according to the configuration of the eighth embodiment, it is possible to detect the water leak in the module component 22 more quickly than before.

The configurations of the first to eighth embodiments described above may be combined in any desired manner. Further, in the above description, the case where the present invention is applied to the high-voltage thyristor device is shown, but it goes without saying that the present invention can also be applied to other devices using the water-cooled air insulation method.

[0039]

As described above, according to the first aspect of the present invention, the upper surface of the drainage flange is formed in order to form the water guiding groove in order to guide the water leak accumulated on the bottom plate of the module frame to the drainage hole. With this configuration, there is an effect that a water-cooled thyristor module can be obtained in which leakage of water in the module components can be quickly discharged and easily detected.

According to the second aspect of the present invention, the rectifying member, which is formed in a tubular shape in order to regulate the flow of water leaking through the drainage flange and the inner wall surface of which is pleated, is provided on the drainage flange. Since it is configured as described above, there is an effect that it is possible to obtain a water-cooled thyristor module that can prevent dielectric breakdown of module components due to water leakage in the module components.

According to the third aspect of the present invention, the funnel for collecting and collecting the leaked water discharged from the water-cooled thyristor module located above is provided on the drainage flange, and at the same time, it is long to prevent the leaked water from scattering. Since the funnel is provided with a sheet for preventing water splashing, which has a hole-shaped cut portion and is formed so as to be placed on the inner peripheral surface of the funnel, the module component due to water leakage in the module component. There is an effect that it is possible to obtain a water-cooled thyristor module that can prevent the dielectric breakdown.

According to the invention of claim 4, the bottom of the module frame bottom plate is inclined toward the drainage hole, and the drainage hole and the drainage flange are provided at the lowest position of the module frame bottom plate. Therefore, it is possible to obtain a water-cooled thyristor module that can quickly detect and easily detect water leaks in module components.

According to the fifth aspect of the present invention, the slits which are the through holes are provided in the insulating plate, so that a water-cooled thyristor module capable of preventing the dielectric breakdown of the module components due to water leakage in the module components can be obtained. There is an effect that can be.

According to the sixth aspect of the invention, since the water guide plate for collecting and collecting the cooling water leaking from the water cooling type cooling means and guiding it to the drain hole is provided below the water cooling type cooling means. There is an effect that it is possible to obtain a water-cooled thyristor module in which water leakage in the component parts can be quickly discharged and easily detected, and dielectric breakdown of the module component parts due to water leakage in the module component parts can be prevented.

According to the invention of claim 7, a covering pipe for covering a portion of the water-cooling type cooling means which may leak water to prevent the leaking water from scattering to the surroundings, and a covering pipe communicating with the covering pipe and in the covering pipe. Since the splash water leakage receiving cap having a straightening pipe for rectifying and discharging the leaked water to the module frame bottom plate is provided in the water cooling type cooling means, it is possible to prevent the dielectric breakdown of the module component parts due to the water leak in the module component parts. There is an effect that a water-cooled thyristor module that can be prevented can be obtained.

According to the eighth aspect of the present invention, one or more partition plates are erected on the module frame bottom plate to divide the module frame bottom plate into a plurality of parts, and drain water is discharged to each of the divided module frame bottom plates. Since the holes and the drainage flange are provided, it is possible to obtain a water-cooled thyristor module that can quickly discharge and easily detect leakage of water in module components.

[Brief description of drawings]

FIG. 1 is a perspective view showing a drainage flange according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view showing a rectifying member according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a state in which a flow regulating member is provided on a drainage flange.

FIG. 5 is a plan view of FIG.

FIG. 6 is a cross-sectional view showing a state in which a water splash prevention sheet according to an embodiment of the present invention is provided on a funnel.

FIG. 7 is a plan view of FIG.

FIG. 8 is a sectional view showing a module frame bottom plate according to an embodiment of the present invention.

FIG. 9 is a partial cross-sectional view showing a slit provided in an insulating plate according to an embodiment of the present invention.

FIG. 10 is a plan view of FIG.

FIG. 11 is a perspective view showing a water guide plate according to an embodiment of the present invention.

FIG. 12 is a partial cross-sectional view showing a state in which a water guide plate is provided on a drainage flange.

FIG. 13 is a perspective view showing a splash water leakage receiving cap according to an embodiment of the present invention.

FIG. 14 is a side view of FIG.

FIG. 15 is a side view showing a usage state of the splash water leakage receiving cap.

FIG. 16 is a sectional view showing a partition plate erected on a module frame bottom plate according to an embodiment of the present invention.

FIG. 17 is a side view schematically showing a conventional multi-stage water-cooled thyristor module.

FIG. 18 is a plan view showing the arrangement of module components.

FIG. 19 is a side view of the water-cooled thyristor module.

FIG. 20 is a cross-sectional view of a drainage flange.

FIG. 21 is a partial cross-sectional view showing a state in which water leakage has accumulated up to the height of the drainage flange.

FIG. 22 is a partial cross-sectional view showing a state in which water has overflowed the drainage flange.

FIG. 23 is a partial cross-sectional view showing a state in which leaked water that has flowed down from the upper water-cooled thyristor module onto the funnel is scattered.

FIG. 24 is a side view showing a state where leaked water is accumulated on the insulating plate.

FIG. 25 is a partial cross-sectional view showing a state in which cooling water leaks from a joint between a Teflon pipe and a nipple and collects on the module frame bottom plate.

FIG. 26 is a partial cross-sectional view showing a state in which cooling water leaks and scatters from the joint between the Teflon pipe and the nipple.

[Explanation of symbols]

1 drainage flange, 2 module frame bottom plate, 2
a drainage hole, 3 water guiding groove, 4 straightening member, 6 funnel, 7
Sheet for preventing water leakage, 9 notches, 10 water leakage, 12 slits, 13 insulating plates, 14 insulators, 1
5 Teflon pipes (water cooling type cooling means), 16 nipples (water cooling type cooling means), 17 water guide plates, 18 cooling fins (water cooling type cooling means), 19 caps for splash and leakage water reception, 19a cladding pipes, 19b straightening pipes, 21 partitions Board, 2
2 module components, 25 thyristor elements.

Front page continuation (72) Inventor Satoshi Sato Marunouchi 2-3-3, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Inventor Takahiro Kawahara 1-2-1, Wadasaki-cho, Hyogo-ku, Kobe Sanrishi Electric Machinery Co., Ltd. Kobe Works (72) Inventor Koji Onishi 1-2-1, Wadazakicho, Hyogo-ku, Kobe Sanryo Electric Co., Ltd.

Claims (8)

[Claims] 1. A module component having water-cooling cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component from below through a insulator, the water-cooling cooling. In a water-cooled thyristor module having a module frame bottom plate having a drainage hole for discharging the cooling water leaked from the means, and a drainage flange provided in the drainage hole for guiding the cooling water downward, from the water-cooled cooling means A water-cooled thyristor module, wherein an upper surface of the drainage flange is absent to form a water guiding groove in order to guide the water leaked and accumulated on the bottom plate of the module frame to the drainage hole. 2. A module component having a water cooling type cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component from below via a insulator, said water cooling type In a water-cooled thyristor module comprising a module frame bottom plate having a drainage hole for discharging cooling water leaked from the means, and a drainage flange provided in the drainage hole for guiding the cooling water downward, the drainage flange is A water-cooled thyristor module, characterized in that a rectifying member, which is formed in a tubular shape and whose inner wall surface is formed in a pleated shape, is provided on a drainage flange in order to regulate the flow of leaking water therethrough. 3. A module component having a water cooling type cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component from below through a insulator, the water cooling type cooling device. In the water-cooled thyristor module provided with a module frame bottom plate having a drainage hole for discharging the cooling water leaked from the means, and a drainage flange provided in the drainage hole for guiding the cooling water downward, the module was positioned above. The drainage flange is provided with a funnel that captures and collects the leaked water discharged from the water-cooled thyristor module, and has a slotted notch to prevent the leaked water from scattering and the inner peripheral surface of the funnel. A water-cooled thyristor module, characterized in that the funnel is provided with a sheet for preventing water splashing formed so that it can be placed. 4. A module component having water-cooling cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component from below through a insulator to cool the water-cooling device. In a water-cooled thyristor module including a module frame bottom plate having a drainage hole for discharging cooling water leaked from the means, and a drainage flange provided in the drainage hole for guiding the cooling water downward, in the module frame bottom plate, A water-cooled thyristor module, wherein a bottom portion is inclined toward the drainage hole, and the drainage hole and the drainage flange are provided at the lowest position of the module frame bottom plate. 5. A module component having a water cooling type cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component from below via a insulator, said water cooling type In a water-cooled thyristor module having a module frame bottom plate having a drain hole for discharging cooling water leaked from the means, and a drain flange provided in the drain hole for guiding the cooling water downward, the insulating plate is penetrated. A water-cooled thyristor module characterized by having a slit as a hole. 6. A module component having a water cooling type cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component from below through a insulator, said water cooling type In the water-cooled thyristor module including a module frame bottom plate having a drainage hole for discharging the cooling water leaked from the means, and a drainage flange provided in the drainage hole for guiding the cooling water downward, the water-cooled cooling means A water-cooled thyristor module, characterized in that a water guide plate for collecting and collecting the cooling water leaking from it and guiding it to the drain hole is provided below the water-cooled cooling means. 7. A module component having a water cooling type cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component part from below via a insulator, said water cooling type In the water-cooled thyristor module including a module frame bottom plate having a drainage hole for discharging the cooling water leaked from the means, and a drainage flange provided in the drainage hole for guiding the cooling water downward, the water-cooled cooling means A covering pipe that covers the location where there is a risk of water leakage and prevents the water from scattering around, and a rectifying pipe that communicates with the covering pipe and rectifies and discharges the water leak in the covering pipe to the module frame bottom plate. A water-cooled thyristor module, characterized in that the water-cooled chiller module is provided with a cap for receiving scattered water leakage. 8. A module component having water cooling type cooling means for arranging a thyristor element and its associated circuit on an insulating plate and cooling them, and supporting the module component part from below through a insulator to cool the water cooling type. In the water-cooled thyristor module including a module frame bottom plate having a drain hole for discharging the cooling water leaked from the means, and a drainage flange provided in the drain hole for guiding the cooling water downward, on the module frame bottom plate. A water-cooled thyristor characterized in that one or two or more partition plates are erected in a vertical direction to divide the module frame bottom plate into a plurality of parts, and each of the divided module frame bottom plates is provided with a drain hole and a drainage flange. module.