KR101761765B1 - Pool equipped with leak prevention system and leak monitoring method for pool - Google Patents

Abstract

The present invention relates to a water tank and a water leakage prevention method using a water leakage blocking system, and more particularly, to a water leakage prevention method using a concrete vessel, a plurality of first panels connected by welding, And a bottom liner which is welded to the second panel and welded to the bottom of the concrete container and welded to the wall liner, the water tank comprising a plurality of A third panel connected by welding and inserted between the bottom liner and the bottom of the concrete container; a corner leak collector installed in the corner of the water tank to collect leaks discharged between the bottom liner and the leakage collector plate; With the provision of the channel, leakage is blocked and the pneumatic device And a water leakage prevention system capable of quickly detecting a leakage occurrence point and a leakage occurrence point.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leakage monitoring system and a leakage monitoring method for a water tank,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water leakage monitoring method for a water tank and a water tank, and more particularly to a water leakage monitoring method for a water tank and a water tank provided with a water leakage blocking system.

Spent fuel in spent fuel, spent fuel, and commercial nuclear reactors in research reactors is stored in a water tank for nuclear fuel cooling and radiation shielding. For this purpose, a reinforced concrete structure is installed outside the water tank to maintain the rigidity of the structure, and a tank liner is installed on the inner wall and bottom surface of the water tank. The water tank liner composed of the welding of the metal plate is attached to the reinforced concrete to prevent the water level of the water tank and the damage of the reinforced concrete structure due to the water in the water tank.

The design of the present nuclear fuel reservoir is designed to allow the leakage of water in the water tank by installing a leakage collection system between the tank liner and the reinforced concrete in consideration of potential tank liner damage. The leakage collection system is installed along the weld zone of the tank liner. The leakage water generated by the damage of the weld zone is designed to collect in the leak reservoir, but it contains the following technical problems.

First, the conventional leakage water collection system can confirm the leakage, but can not confirm the leakage area. There are several methods to identify leaking sites known to date, such as visual inspection of the inside of a water tank or inspection through installation of a special apparatus (for example, a vacuum box device). However, due to restrictions on accessibility and applicability, Is very difficult.

Second, some of the water in the fuel tank during the operation period is always evaporated into the air. Therefore, it is difficult to distinguish the decrease of the number of the water tank due to the minute damage of the water tank liner from the decrease of the water tank due to the evaporation. This type of leakage can lead to the expansion of the damaged area of the aquarium liner and ultimately lead to excessive leakage accidents.

Third, in case of excessive leakage, leakage of water tank between leakage collector system and reinforced concrete causes loss of nuclear fuel cooling, damage of reinforced concrete structures, and environmental leakage of radioactive materials.

As shown in FIG. 1, the water tank liner 2 in the upper layer of the water tank is formed by welding a plurality of metal plates together, and the welding portion 2-1 is most vulnerable to leakage, A leak-collecting channel (5) is provided under the welding portion (2-1). And the leaks collected in the leak collecting channel 5 can be transferred to the leak reservoir 7 along the connector 6. [

The leakage water collecting channel 5 is embedded in the bottom of the concrete container 1 when the reinforced concrete layer 1 constituting the lower layer of the water tank liner 2 (hereinafter, referred to as 'concrete container' The bottom surface of the water tank liner 2 and the upper end 5-1 on both sides of the water collecting channel 5 can not be welded to each other when the water tank liner 2 is installed on the floor of the water tank liner 2.

Therefore, when water leaks from the welded portion 2-1 of the water tank liner 2 exceeds the flow rate into the water leakage reservoir 7, the upper ends (5- 1) and permeate into the concrete.

In this case, there is no way to prevent leakage, and as described above, it is difficult to check the leaking position and leakage position, and there is a problem that it can be connected to environmental leakage of radioactive material.

That is, the conventional leak-collecting system is installed on the wall surface and the bottom surface of the weld portion of the nuclear fuel tank liner. Since the leakage collection system installed on the wall is installed prior to the installation of the reinforced concrete in the working process, it is possible to connect the wall water tank liner with the airtight structure. However, the leakage water collection system installed on the floor is installed first in the reinforced concrete, Can not be connected to the airtight structure because the operation is performed in the order that the water tank liner of the water tank is covered with the leakage water collection system.

Therefore, various inspection apparatuses such as a visual inspection using a camera, an inspection using a meter, and a inspection using a vacuum box have been developed for in-service inspection of a nuclear fuel tank liner. However, such an inspection apparatus has many limitations on the time and space in the examination of the nuclear fuel tank liner, and it is accompanied with many difficulties in detecting the leakage area. In addition, if leaks are identified, rapid sealing should be done to prevent further leaks.

Therefore, it is necessary to develop a means for effectively blocking leakage of a water tank liner currently applied and a means for clearly recognizing the location of leakage.

Patent Registration No. 10-0517121 (registered date: 2005. 09. 16.)

Registration Utility Model No. 20-0281437 (Registered Date: Jun. 27, 2002)

U.S. Patent No. 6,431,387 B2 (registered on Aug. 13, 2002)

Accordingly, the present invention provides a water tank equipped with a leak-barrier system that can ensure the soundness of the fuel reservoir liner and confirm the leakage area accurately by developing a leakage monitoring method of a water tank liner and a tank liner provided with a leak- .

In addition, a water tank liner provided with a leak-barrier system can serve as a secondary fuel reservoir liner, thereby preventing the water tank from being damaged when the welded liner of the nuclear fuel tank is damaged, and a leak- ≪ / RTI >

In order to accomplish the above object, a water tank provided with a leakage preventing system according to the present invention comprises a concrete container, a wall liner attached to the inner wall of the concrete container by welding a plurality of first panels, And a bottom liner connected to the bottom of the concrete container by welding and connected to the wall liner by welding, wherein the plurality of third panels are welded to each other, A corner leakage water collecting channel embedded in the edge of the water tank and collecting leakage water discharged between the bottom liner and the water leakage collecting plate; Is embedded in the wall of the first panel And a lower portion is embedded in the bottom of the concrete container, and the upper portion is protruded by the thickness of the third panel, and the lower portion of the channel is protruded by the thickness of the third panel, And the third panel is welded to both sides of the upper part so as to connect the third panels. The welded portion between the second panels is arranged on the upper part of the connection block along the longitudinal direction of the connection block, And is formed into a channel shape in which the upper part is opened so as to form a bottom leak collecting channel.

Preferably, the welding portions between the third panels are disposed along the longitudinal direction of the connection block on the upper part of the connection block, and the connection block is formed into a block shape in which the interior is filled, thereby forming a floor connection block.

The upper part of the concrete container is protruded by a length corresponding to the combined thickness of the third panel and the second panel and the upper surface is exposed through the third panel and the second panel to the bottom surface of the water tank, It is preferable that a weight support to which the third panel and the second panel are welded is further provided on the upper side surface.

The upper part of the concrete container is protruded by a length corresponding to the combined thickness of the third panel and the second panel and the upper surface is exposed through the third panel and the second panel to the bottom surface of the water tank, A cylindrical hollow penetrating vertically is formed at the center, a hollow upper portion communicates with the inside of the water tank, a cylindrical sleeve surrounding the hollow extends to the lower portion of the concrete container, and the third panel and the second panel are welded to the upper side surface Preferably, a penetrating portion is further provided.

It is also preferable that an air injection unit including a pneumatic device for injecting compressed air into the corner leak-collecting channel or the water-collecting wall leak collecting channel, and a pressure gauge for measuring the internal pressure of the corner leak-collecting channel or the water-

In the water leakage preventing method using the water tank provided with the water leakage preventing system according to the present invention, a third panel for collecting water leakage is installed between the bottom of the bottom liner and the bottom of the concrete container, And the third panel, and collecting the collected water into the corner leak collecting channel.

Preferably, before the collecting step, a pneumatic device is connected to the water collection wall leak collecting channel or the corner leak collecting channel so that a gap between the water collecting wall leak collecting channel and the corner leak collecting channel and between the bottom liner 22 and the third panel A leakage amount detection step of detecting a leakage occurrence by observing a change in the air pressure in the leakage passage is performed after injecting a predetermined amount of air into the leakage passage connected to the leak passage.

Preferably, when leakage is detected due to a change in the air pressure in the leakage passage between the sensing step and the collecting step, if the bubbles are formed in the water tank by injecting air into the leakage passage with the pneumatic device, A leak point acquisition step for capturing a leak occurrence point is further performed.

The water tank provided with the leak-barrier system according to the present invention has the following effects.

First, unlike the prior art, leakage of water to the outside of the water tank is blocked even if leakage occurs at the welded portion of the bottom liner.

Second, the first leak is capillary phenomena and is immediately collected in leak collection means.

Third, welding between the bottom leak collecting channel and the leak collecting plate becomes possible, so that the bottom leak collecting channel can perform the function of the channel for blocking the leak.

Fourth, since the bottom has a double liner structure and a stepped multi-step structure is adopted, the leakage between the heavy material support for supporting the heavy object and the penetration portion of the bottom and the liner forming the bottom is blocked.

Fifth, regardless of whether or not the reactor is operating, it is possible to check the occurrence of leaks and the point where leaks occur, thus preventing accidents.

1 is a drawing showing a prior art,
Fig. 2 is a front sectional view showing the present invention,
FIG. 3A is a front sectional view of the case where the connecting rod is a bottom leak collecting channel,
3B is a front sectional view of the case where the connecting rod is a floor connecting block,
4 is an exploded perspective view of the present invention,
5 is a top perspective view of the present invention,
6 is a bottom perspective view of the present invention,
7 is a front sectional view of a channel expansion plate according to the present invention,

The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

A leakage collector plate (30) inserted between a bottom surface of a water tank liner (20) and a bottom of a concrete container (10) is provided with a water tank liner (20) attached to the inner surface of the concrete tank A corner leak water collecting channel 50 in which leakage water collected at corners is collected, a water collection wall leak collecting channel 40 and a connecting rod 60. [

The concrete container 10 is a concrete container 10 in the form of a conventional water tank,

And the wall are integrally formed so that water can be stored therein and the upper part is opened, and there is no particular limitation on the specific shape and size.

Since the inner surface of the concrete container 10 is divided into the inner surface and the bottom surface of the concrete container 10, the tank liner 20 includes a wall liner 21 attached to the wall of the concrete container 10, And a bottom liner 22.

The panel comprising the wall liner 21 and the bottom liner 22 is made of metal and is installed so that the airtightness of the inner wall of the concrete container 10 can be maintained to prevent leakage of water contained in the concrete container 10 .

Accordingly, the structural rigidity of the water tank is maintained by the concrete container 10, and the water tank liner 20 is responsible for the airtightness maintenance for preventing water leakage.

The walls of the wall liner 21 and the bottom liner 22 have a certain size limit according to the standard to be mass produced so that the wall liner 21 or the bottom liner 22 In order to be constructed to maintain the airtightness inside the concrete container (10), a plurality of panels must be welded and connected.

At this time, even if the water tank liner 20 is provided as a discontinuous section of the panel, the welded portion 22-1 may be regarded as a portion likely to be damaged due to the passage of time due to the influence of the water quality environment and mechanical load.

Particularly, in the nuclear power field, water in the water tank performs radiation shielding and cooling functions as described in the Background Art, so that if water level in the water tank is lowered due to leakage at the welding part (22-1) .

Conventionally, as shown in FIG. 1, a leak-collecting channel 5 is formed in a lengthwise direction along a welded portion 2-1 below a welding portion 2-1 between the panels of the bottom liner 22, So that the leakage water can be collected into the leak-collecting channel 5.

However, as mentioned above, since it is not possible to weld between the upper end 5-1 of both side upper portions 5-1 of the leakage collecting channel 5 and the bottom of the water tank liner 20, -1) could not be the ultimate solution to the leakage.

Accordingly, in the present invention, as shown in FIG. 2, a leakage collector plate 30 is provided between the bottom of the bottom liner 22 and the bottom of the concrete container 10.

Like the wall liner 21 or the bottom liner 22 constituting the water tank liner 20, the water leakage collecting plate 30 is formed by welding a plurality of panels.

In this case, the panels constituting the wall liner 21 are referred to as a first panel, the panels constituting the bottom liner 22 are referred to as a second panel, and the panels constituting the leakage collection plate 30 are referred to as a third panel.

Therefore, even if leakage occurs due to corrosion due to corrosion in the welded portion 22-1 between the second panels constituting the bottom liner 22, the leaked water does not flow out to the concrete container 10, Collecting plate 30.

In this case, a corner leak-collecting channel 50 is provided at an edge of the water tank liner 20 for collecting leaked water permeated between the bottom liner 22 and the water collecting plate 30, as shown in FIG.

Although not shown in FIG. 2, a passage is formed in the corner leak collecting channel 50 to allow leakage water leaking between the bottom liner 22 and the leak collecting plate 30.

At this time, the water leaking between the bottom liner 22 and the water leakage collecting plate 30 flows into the corner leakage water collecting channel (the water leakage collecting plate 30) at a high speed along the narrow gap between the bottom liner 22 and the water collecting plate 30 50).

And a connecting rod 60 is installed below the welding portion 22-1 between the second panel constituting the bottom liner 22. [

The connecting rod 60 is formed by an embodiment formed by a bottom leakage collection channel 160 similar to the conventional leakage collection channel 5 of FIG. 1 as shown in FIG. 3A, and the conventional leakage 1 of FIG. There is an embodiment in which, unlike the collecting channel 5, the bottom connecting block 260 in the form of a tight block is formed.

In both of the above cases, the connecting block 60 is installed in a state of being embedded in the bottom of the concrete container 10.

The bottom leakage collection channel 160 shown in FIG. 3A differs from the conventional leakage collection channel 5 of FIG. 1 in that the welding is performed between the bottom leakage collection channel 160 and the leakage collection plate 30.

Welding between the bottom leak collecting channel 160 and the leak collecting plate 30 enables strong contrast against leakage generated in the bottom liner 22.

In this case, when water leaks into the bottom leakage collecting channel 160, the water leaks into the bottom liner 22 and the leakage collector plate 30 without permeating the concrete, ).

Also, the same leakage reservoir 7 as the conventional leakage collection channel 5 shown in FIG. 1 may be connected to the bottom leakage collection channel 160.

3A, so that the upper bottom liner 22 does not fall into the bottom leak collecting channel 160 because the bottom leak collecting channel 160 is in the shape of a hollow channel. have.

The connecting rod 60 provided under the welding portion 22-1 between the second panel constituting the bottom liner 22 may be the bottom leakage collecting channel 160 described above and may also be a bottom connecting block 260).

At this time, the bottom connecting block 260 does not act to collect leakage water, and acts to support the lower portion of the welded portion 22-1 between the second panels so that the welded portion 22-1 does not fall down .

3A and 3B, a step is formed in the welded portions 30-1 and 30-2 where the leakage collector plate 30 is welded on both upper sides of the bottom leakage collecting channel 160 of FIG. 3A and the bottom connection block 260 of FIG. So that the leak-collecting plate 30 can be seated and welded on a plane formed by the step.

When the leak-collecting plate 30 is seated and welded on the plane formed by the step, the leak-collecting plate 30 is supported in a plane formed by the step, so that the welded portion 30- The welding portions 30-1 and 30-2 between the leakage collecting plate 30 and the connecting block 60 can be firmly held.

Also, as shown in FIGS. 2 and 5, a water leakage wall collecting channel 40 similar to the bottom leakage collecting channel 160 may be formed on the back surface of the wall liner 21.

(Not shown) between the first panel constituting the wall liner 21 may cause leakage due to damage as in the case of the welded portion 22-1 between the second panel constituting the bottom liner 22. [

Here, the water collection wall leakage collecting channel 40 can be welded to the first panel constituting the wall liner 21, unlike the prior art water leakage collecting channel 5 of FIG.

This is because the leak-collecting channel 5 of FIG. 1 places the concrete constituting the bottom of the concrete container 10 after installing the leak-collecting channel 5, so that when the bottom liner 22 is installed, the bottom liner 22 ) And the leak-collecting channel (5).

However, in the case of the wall liner 21, it is possible to place the concrete after welding the wall-housing liner 21 and the water-collecting wall water-collecting channel 40, and thus welding is possible.

Here, the leaking water flowing into the wall leak collecting channel 40 is guided downward along the wall leak collecting channel 40 and collected in the corner leak collecting channel 50.

In this case, a separate leak reservoir 7 may be connected to the corner leak collecting channel 50 as in the prior art of FIG.

5 and 6 show a drain pipe 52 provided for discharging the leakage water from the corner leak collecting channel 50 to the leak water reservoir 7.

Meanwhile, as shown in FIGS. 2 and 4, a heavy object support 70 for supporting a heavy object installed in the water tank from below can be installed.

In particular, research reactors are equipped with heavy objects such as reactors and experimental equipment in the water tank, which are fixed on the bottom of the water tank to maintain structural integrity during earthquakes.

If a heavy material is directly connected to the bottom liner 22 by using a member such as the fixing bolt 71, the bottom liner 22 may be damaged when an earthquake occurs, and a water tank may be leaked.

Therefore, a heavy object support 70 is required.

In this case, in the present invention, the upper part of the side surface of the heavy object support 70 is formed to have a stepped structure, so that the third panel constituting the bottom panel 22 and the water leakage collecting plate 30 have a multi- So that the leakage of water due to the damage of the welded portions 22-3 and 30-3 on the upper side of the heavy material support 70 is blocked.

Also, in the case of a research reactor, a through hole may be formed in the lower portion of the water tank to move the control rod up and down. As shown in FIGS. 2 and 4, the sleeve 81 is inserted into the through hole to block leakage due to the through hole. The through hole 80 is formed of a body communicating with the sleeve 81.

In this case, in order to achieve the watertight structure of the penetrating portion 80, the upper side surface of the penetrating portion 80 is formed in a multi-stage structure like the heavy material support 70 so that the bottom liner 22 and the water- So that the occurrence of leakage due to the penetration portion 80 is blocked.

As shown in FIG. 5, the leak collecting plate landing pad 51 is formed so that the leak collecting plate 30 can be seated and welded step by step in the corner leak collecting channel 50, And is leaked by being welded to the collecting plate landing pad (51).

Thus, in the present invention, the wall leak water collecting channel, the corner leak water collecting channel 50, the space between the bottom liner 22 and the water leakage collecting plate 30, which are the sections where the water is moved or collected, Air can also be moved in the same path as well.

The water leakage collecting channel 40, the corner water leakage collecting channel 50, the space between the bottom liner 22 and the water leakage collecting plate 30, and the floor leakage collecting channel 160 Are connected to each other is referred to as a " leak path ".

It may be seen that the leakage between the bottom liner 22 and the water collecting plate 30 is completely adhered due to the load of the bottom liner 22 and the load of the weight or the structure on the bottom liner 22 However, since the third panel and the second panel constituting the leakage collecting plate 30 and the bottom liner 22 are both rigid members, a space through which the leakage water can be moved by the capillary phenomenon can be finely formed.

2 and 5, there is provided an air injection unit 90 comprising a pneumatic device for injecting air into the water leakage passage, and a certain amount of air is injected into the water leakage passage, A pressure gauge (91) for measuring the leakage can be detected by monitoring the pressure change in the leakage passage.

At this time, preferably, the air injecting unit 90 is installed above the water collection wall water collecting channel 40 to facilitate observation.

That is, when a predetermined amount of air is injected into the water leakage passage, the water leakage passage keeps a constant air pressure inside the water leakage passage when the upper end of the water reception wall 40 corresponding to the inlet or the outlet communicating directly with the outside is closed.

At this time, if the leakage starts to occur, the pressure inside the leak passage decreases, and such pressure drop can be detected by monitoring the pressure gauge 91.

For example, after setting the pressure in the spillway to 5 bar, if the pressure drops to 3 bar or 2 bar, it is detected that a leak is occurring at a certain point.

At this time, the pressure drop is caused by the air escaping into the water inside the water tank through the leak point.

In this case, the confirmation of the leak point can be confirmed by checking the point where the bubble is generated as shown in Fig.

Once the leakage is confirmed, a large amount of air is injected into the water leakage passage by using the air injection unit 90, so that a large amount of air bubbles are generated at the water leakage point, and the water leakage point can be grasped.

1, since air is blown between the leakage collecting channel of FIG. 1 and the bottom liner 2, the air is leaked through the leakage collecting channel 5 and the bottom liner 2 2), the leak detection by the pneumatic device itself could not be realized.

However, in the present invention, by introducing the leakage collector plate 30, air can not escape between the bottom liner 22 and the bottom of the concrete container 10, thereby enabling detection of leakage occurrence by the air injection unit 90 Not only will it be possible to detect leaks.

Therefore, in the present invention, leaks can be quickly detected in the spent nuclear fuel storage tank as well as in the research reactor, and leaks can be grasped through the leaking passage even during normal operation.

The water leakage prevention method of the water tank according to the present invention has been described in the operation of each constitution of the water tank provided with the water leakage prevention system, and the further explanation will be omitted.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

1, 10: concrete container 2: aquarium liner
5: Leakage collecting channel 5-1: Leakage collecting channel upper both ends
6: Connector 7: Leakage Storage
20: aquarium liner 21: a wall liner
22-1, 2, 3, 4: welding site 22: bottom liner
30: Leak collecting plate 30-1,2,3,4: welding part
40: Reservoir wall leak collection channel 50: Corner leak collection channel
51: Leak collecting plate landing pad 52: Drain pipe
60: connecting rod 70: heavy weight support
71: Fixing bolt 72: Support step step
80: penetrating part 81: sleeve
82: penetrating part step difference 90: air injecting part
91: Manometer 160: Floor leak collecting channel
161: weld support bracket 260: bottom connection block

Claims (8)

A concrete container;
A wall liner which is welded to the plurality of first panels and is attached to the inner wall of the concrete container; a plurality of second panels welded to each other and attached to the bottom of the concrete container and welded to the wall liner A bottom liner, and a water tank liner composed of a bottom liner,
A plurality of third panels welded to each other and inserted between the bottom liner and the bottom of the concrete container;
A corner leak collecting channel embedded in an edge of the water tank and collecting leakage water discharged between the bottom liner and the water collecting plate;
A channel installed in the wall of the concrete container at the back surface of the wall liner to form a long channel along the welded portion between the first panels, the lower part of the channel being connected to the edge leak collecting channel; And
A lower portion is embedded in the bottom of the concrete container and the upper portion is protruded by the thickness of the third panel and is formed to be longer by the length of the third panel so that the third panel is welded to both sides of the upper portion, Respectively,
Wherein a welded portion between the second panels is disposed along the longitudinal direction of the connection block at an upper portion of the connection block, and the connection block is formed into a channel shape having an open top to form a bottom-leakage collection channel. water tank. The method according to claim 1,
Wherein a welding portion between the third panels is disposed along the longitudinal direction of the connecting block on the upper part of the connecting block, and the connecting block is formed into a block shape in which the inside is filled, thereby forming a bottom connecting block. The method according to claim 1,
The upper portion of the concrete container is protruded by a length corresponding to the combined thickness of the third panel and the second panel and the upper surface is exposed through the third panel and the second panel to the bottom surface of the water tank, A heavy object support to which the third panel and the second panel are welded to the side surface; Wherein the water leakage prevention system further comprises a water leakage prevention system. The method according to claim 1,
The upper part of the concrete container is protruded by a length corresponding to the combined thickness of the third panel and the second panel and the upper surface is exposed through the third panel and the second panel to the bottom surface of the water tank, And a cylindrical sleeve extending into the lower portion of the concrete container and communicating with the inside of the water tank, and the third panel and the second panel are welded to the upper side surface, Wherein the water leakage prevention system further comprises: The method according to claim 1,
An air injection unit including a pneumatic device for injecting compressed air into the corner leakage water collecting channel or the water supply wall water collecting channel and a pressure gauge for measuring an inner pressure of the corner water leakage collecting channel or the water collecting wall water collecting channel A water leakage prevention system is provided. A water leakage prevention method of a water tank using a water tank provided with a water leakage prevention system according to any one of claims 1 to 5,
A third panel for collecting leaking water between the bottom of the bottom liner and the bottom of the concrete container to collect leaking water generated in the bottom liner into a space between the bottom liner and the third panel and collecting the leaking water into the corner leak collecting channel; Wherein the water leakage prevention method comprises the steps of: The method according to claim 6,
The pneumatic device is connected to the water collection wall leak collecting channel or the corner leak collecting channel before the collecting step so that the gap between the water collecting wall water collecting channel and the corner leak collecting channel and the bottom liner 22 and the third panel are all connected A leakage detection step of injecting a certain amount of air into the water leakage passage and then monitoring a change in air pressure in the water leakage passage to detect the occurrence of leakage; The method of claim 1, further comprising: 8. The method of claim 7,
When the occurrence of water leakage is detected by the air pressure change in the water leakage passage between the sensing step and the collecting step, when the air is injected into the water passage by the pneumatic device to form bubbles in the water tank, Further comprising the step of acquiring a leak point for capturing an occurrence point of the water leakage.

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