CN214621638U

CN214621638U - Leakage detection system

Info

Publication number: CN214621638U
Application number: CN202120753666.XU
Authority: CN
Inventors: 王小龙; 李政; 朱倍萱
Original assignee: Shenhua Shendong Coal Group Co Ltd
Current assignee: Shenhua Shendong Coal Group Co Ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-11-05
Anticipated expiration: 2031-04-13

Abstract

The application discloses leak hunting system, including the locking mechanism, the mechanism and the water tank of suppressing that are used for setting up the rigidity of the tube bank in the casing of heat exchanger, suppress the input of mechanism with the water tank is connected, suppress the output of mechanism with the casing is connected, still including being used for measuring the manometer of pressure in the casing. The utility model discloses can guarantee the rigidity of tube bank when the operation of looking for leaks to can realize adopting great suppress pressure to look for the operation of leaking, guarantee the security of the operation of looking for leaks and improve the accuracy of looking for leaks.

Description

Leakage detection system

Technical Field

The application relates to the technical field of heat exchangers, in particular to a leakage detection system.

Background

At present, in the existing shell-and-tube heat exchanger, when the leakage is detected, the end socket of the heat exchanger needs to be detached so as to observe whether water flows out from the end port of the tube bundle, and therefore whether the heat transfer tube leaks inwards is determined. But when demolising the heat exchanger head after, the tube bank has lost the axial fixity power, when looking for the hourglass, the pressure of suppressing is too big, and rivers are greater than the frictional force that the tube bank received to the impact force of tube bank, lead to the tube bank to take place the displacement to make the tube bank shift out from the casing, damage the tube bank, can harm staff's life safety even. When the pressurizing pressure is too low, the heat transfer pipe with small crack and less serious internal leakage can be diagnosed as intact by mistake, so that the heat exchanger needs to be disassembled again to check the leakage after short-term operation, thereby causing waste of manpower, material resources and financial resources and influencing normal production.

Therefore, it is necessary to design a leak testing system that can ensure the safety of the leak testing operation and the accuracy of the leak testing.

Disclosure of Invention

The utility model provides a leak hunting system is provided in the not enough of overcoming prior art, can guarantee the rigidity of tube bank when the operation of leaking hunting to can realize adopting great suppress pressure to carry out the operation of leaking hunting, guarantee the security of the operation of leaking hunting and improve the accuracy of leaking hunting.

The technical scheme of this application provides a leak hunting system, including the locking mechanism, the mechanism of suppressing and the water tank that are used for the rigidity that will set up the tube bank in the casing of heat exchanger, the input of the mechanism of suppressing with the water tank is connected, the output of the mechanism of suppressing with the casing is connected, still including being used for measuring the manometer of pressure in the casing.

Preferably, the heat exchanger further comprises a tube plate, the tube bundle is arranged in the shell, the tube plate is fixedly connected with the tube bundle, the tube plate is arranged at the end part of the shell, and the locking mechanism is connected with the shell and the tube plate to fix the tube bundle and the shell during leakage detection.

Preferably, the locking mechanism comprises a first flange and a second flange, the first flange is arranged along the circumferential direction of the shell and fixedly connected with the outer wall of the shell during leakage detection, the tube plate is arranged between the first flange and the second flange, and the first flange is connected with the second flange and clamps the tube plate.

Preferably, the tube plate is provided with a clamping portion extending radially outward, and the first flange and the second flange clamp the clamping portion.

Preferably, the clamping device further comprises a fastening bolt, the first flange is provided with at least two first fixing holes along the circumferential direction, the second flange is provided with at least two second fixing holes along the circumferential direction, the clamping portion is provided with at least two third fixing holes along the circumferential direction, the first fixing hole, the second fixing hole and the third fixing hole are coaxial, and the fastening bolt penetrates through the first fixing hole, the second fixing hole and the third fixing hole and locks the first flange and the second flange, so that the first flange and the second flange clamp the clamping portion.

Preferably, the second flange further comprises radially disposed ribs.

Preferably, locking mechanism includes along the first fixed part that casing circumference set up, along second fixed part and the screw that the radial outside extension of tube sheet set up, first fixed part sets up at least one first screw along circumference, the second fixed part sets up at least one second screw along the axial, first screw with the second screw is coaxial, the screw runs through first screw with the second screw and with first screw with second screw threaded connection.

Preferably, the pressurizing mechanism comprises a pressurizing pump, a water inlet valve and a water outlet valve, the water inlet valve is connected with the input end of the pressurizing pump, and the water outlet valve is connected with the output end of the pressurizing pump.

Preferably, the shell is provided with a water outlet, the water outlet is connected with the water tank, and the safety valve is arranged between the water outlet and the water tank.

Preferably, the device further comprises an exhaust valve, and the exhaust valve is connected with the bottom of the shell.

After adopting above-mentioned technical scheme, have following beneficial effect: the utility model discloses an use locking mechanism with the rigidity of tube sheet to make the tube bank of being connected with the tube sheet can with casing relatively fixed, when looking for the operation of leaking, the tube bank can not be because suppress pressure too big and displacement in the casing, avoided tube bank roll-off casing harm staff's operation safety. Meanwhile, the leakage detection operation can be carried out by adopting larger pressing pressure, so that the accuracy of leakage detection is improved.

Drawings

The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:

fig. 1 is a schematic structural diagram of a leak detection system according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the locking mechanism connected to the heat exchanger according to an embodiment of the present invention.

Reference symbol comparison table:

a housing 10: a water inlet 101 and a water outlet 102;

tube sheet 20: a tip 201;

the locking mechanism 30: a first flange 301, a second flange 302, a reinforcing rib 3021, and a fastening bolt 303;

the pressing mechanism 40: a pressurizing pump 401, a water outlet valve 402 and a water inlet valve 403;

a water tank 50, a pressure gauge 60, a safety valve 70, a drain valve 80 and a reducer pipe 90.

Detailed Description

Embodiments of the present application are further described below with reference to the accompanying drawings.

It is easily understood that according to the technical solutions of the present application, those skilled in the art can substitute various structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present application, and should not be construed as limiting or restricting the technical solutions of the present application in their entirety.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The foregoing is to be understood as belonging to the specific meanings in the present application as appropriate to the person of ordinary skill in the art.

The utility model discloses a leak hunting system is disclosed in an embodiment, as shown in fig. 1, it is including the locking mechanism 30, the mechanism 40 and the water tank 50 of suppressing that are used for the rigidity of the tube bank in the casing 10 with the heat exchanger, and the input and the water tank 50 of the mechanism 40 of suppressing are connected, and the output and the casing 10 of the mechanism 40 of suppressing are connected, still including the manometer 60 that is used for measuring casing 10 internal pressure.

Wherein, when carrying out the operation of checking for leaks, input the casing 10 after the mechanism 40 pressurizes the water in the water tank 50 through the pressure, after manometer 60 shows that the pressure in the casing 10 reaches the required value, maintain the pressure in the casing 10 at this pressure value certain time, the staff observes whether the numerical value of manometer 60 has obvious change and whether the end 201 of observing on the tube sheet 20 has water outflow in this time quantum, if do not, prove that this heat exchanger does not leak in, if the numerical value of manometer 60 takes place obvious reduction, and the end 201 on the tube sheet 20 has water outflow, indicate to have and leak in and carry out repair work. Staff can judge jointly whether the condition of interior hourglass takes place through observing the end 201 condition on manometer 60 and the tube sheet 20, and can adjust the pressure value in order to satisfy the leak hunting requirement through manometer 60 cooperation.

In some embodiments of the present invention, as shown in fig. 2, the heat exchanger further includes a tube plate 20, the tube bundle is disposed in the shell 10, the tube plate 20 is fixedly connected to the tube bundle, the tube plate is disposed at the end of the shell 10, and the locking mechanism 30 connects the shell 10 and the tube plate 20 to fix the tube bundle to the shell 10 during leakage detection.

Wherein, be provided with the end 201 that a plurality of and tube bank are connected on tube sheet 20, casing 10 is cylindrical structure, and the tube bank sets up in casing 10 along the axial, and the contact of tube bank and the inner wall of casing 10 can link together tube sheet 20 casing 10 through locking mechanism 30 to make the tube bank with tube sheet 20 fixed connection can fix in casing 10, guarantee that the tube bank can not remove or rotate for casing 10 along the axial in casing 10. When carrying out the operation of checking for leaks, go into the water under high pressure into casing 10 to thereby the end 201 of inspection on tube sheet 20 has water outflow to judge whether take place interior hourglass, under locking mechanism 30's effect, tube bank and casing 10 relatively fixed, consequently can avoid restricting the operation safety that slide-out casing 10 endangered the staff in the in-process of checking for leaks effectively, can also increase the pressure of suppressing simultaneously, thereby guarantee to leak little or interior not serious condition of crack and detect, the accuracy of checking for leaks has been improved.

Fig. 2 in some embodiments of the present invention, the locking mechanism 30 includes a first flange 301 and a second flange 302, the first flange 301 is disposed along the circumference of the shell 10 and fixedly connected to the outer wall of the shell 10, the tube sheet 20 is disposed between the first flange 301 and the second flange 302, and the first flange 301 and the second flange 302 are connected to clamp the tube sheet 20. The first flange 301 is disposed on the outer wall of the end portion of the shell 10, the first flange 301 is integrally formed with or welded to the outer wall of the shell 10, and the tube plate 20 is clamped by the first flange 301 and the second flange 302 by connecting the first flange 301 and the second flange 302 together, so that the tube plate 20 is fixed, and the tube bundle cannot be displaced in the shell 10.

In some embodiments of the present invention, the tube sheet 20 extends radially outward to provide a clamping portion, and the first flange 301 and the second flange 302 clamp the clamping portion. The second flange 302 is hollow in the middle to facilitate the display of the tube bundle ports on the tube sheet 20 for the worker to observe whether water is flowing during the leak detection operation.

In some embodiments of the present invention, the fastening bolt 303 is further included, the first flange 301 is circumferentially provided with at least two first fixing holes, the second flange 302 is circumferentially provided with at least two second fixing holes, the clamping portion is circumferentially provided with at least two third fixing holes, the first fixing hole, the second fixing hole and the third fixing hole are coaxial, and the fastening bolt 303 runs through the first fixing hole, the second fixing hole and the third fixing hole and locks the first flange 301 and the second flange 302, so that the first flange 301 and the second flange 302 clamp the clamping portion. Wherein, a plurality of first fixed orificess, second fixed orifices and third fixed orifices are central symmetry and set up, run through first fixed orifices through using fastening bolt 303, the fixed of tube sheet 20 both can be realized to second fixed orifices and third fixed orifices, also can realize tube sheet 20 at the ascending fixed of footpath, a plurality of fastening bolt 303 effects can avoid tube sheet 20 along axial float or rotate for casing 10 simultaneously, thereby make the tube bank can fix in casing 10 steadily, security when guaranteeing the operation of checking for leaks.

In some embodiments of the present invention, the second flange 302 further comprises radially disposed reinforcing ribs 3021. The reinforcing ribs 3021 can reinforce the strength of the second flange 302, and at the same time, the reinforcing ribs 3021 cover the surface of the tube sheet 20, thereby further fixing the position of the tube sheet 20.

In some embodiments of the present invention, the locking mechanism 30 includes a first fixing portion disposed along the circumferential direction of the casing 10, a second fixing portion disposed along the tube plate 20 and extending radially outward, the first fixing portion is disposed along the circumferential direction with at least one first screw hole, the second fixing portion is disposed along the axial direction with at least one second screw hole, the first screw hole and the second screw hole are coaxial, and the screw passes through and is in threaded connection with the first screw hole and the second screw hole.

Fig. 1 in some embodiments of the present invention, the pumping mechanism 40 includes a pumping pump 401, a water inlet valve 403, and a water outlet valve 402, wherein the water inlet valve 403 is connected to an input end of the pumping pump 401, and the water outlet valve 402 is connected to an output end of the pumping pump 401. When pressurizing, the water inlet valve 403, the pressurizing pump 401 and the water outlet valve 402 are sequentially opened, water in the water tank 50 is injected into the housing 10 through the pressurizing pump 401, and when a desired pressure value is reached, the water outlet valve 402, the pressurizing pump 401 and the water inlet valve 403 are sequentially closed, so that the pressure is constant. Wherein, the water in the housing 10 can be prevented from flowing back by closing the water outlet valve 402, the pressure value in the housing 10 is ensured to be constant and the pressurizing pump 401 is protected.

In some embodiments of the present invention, the housing 10 is provided with a water outlet 102, the water outlet 102 is connected to the water tank 50, and the safety valve 70 is disposed between the water outlet 102 and the water tank 50. The safety valve 70 is in a normally closed state, and when the pressure in the housing 10 exceeds a safety range, the safety valve 70 is opened, and water in the housing 10 is discharged from the water outlet 102 into the water tank 50, thereby ensuring operation safety.

In some embodiments of the present invention, an exhaust valve 80 is further included, and the exhaust valve 80 is connected to the bottom of the housing 10. The water in the housing 10 can be drained by opening the drain valve 80.

Example 1:

the embodiment discloses a leakage detection system, which comprises a locking mechanism 30 for fixing the position of a tube bundle in a shell 10 of a heat exchanger, a pressurizing mechanism 40, a water tank 50 and a pressure gauge 60, wherein the pressurizing mechanism 40 comprises a pressurizing pump 401, a water inlet valve 403 and a water outlet valve 402, the water inlet valve 403 is connected with the input end of the pressurizing pump 401, the water outlet valve 402 is connected with the output end of the pressurizing pump 401, the input end of the pressurizing pump 401 is connected with the water outlet end of the water tank 50 through the water inlet valve 403, the output end of the pressurizing pump 401 is connected with the shell 10 through the water outlet valve 402, water in the water tank 50 is pressurized through the pressurizing pump 401 and then injected into the shell 10, and the pressure gauge 60 is used for monitoring the pressure value in the shell 10.

Wherein, in this embodiment, the heat exchanger still includes tube sheet 20, and casing 10 is cylindrical structure, and the tube bank sets up in casing 10, and the contact of the inner wall of tube bank and casing 10, tube sheet 20 set up the tip at casing 10, and tube sheet 20 and tube bank fixed connection, be provided with a plurality of end 201 of being connected with the tube bank on tube sheet 20, locking mechanism 30 connects casing 10 and tube sheet 20 and makes the position between tube bank and the casing 10 fixed to make the tube bank can not break away from casing 10.

Fig. 2 in the present embodiment, the locking mechanism 30 includes a first flange 301 and a second flange 302, wherein the first flange 301 is disposed along the axial direction of the housing 10 and is fixedly connected to the housing 10. Specifically, the first flange 301 is integrally connected or welded to the housing 10 on the axial outer wall of the housing 10, the second flange 302 has the same diameter as the first flange 301, the tube plate 20 has a diameter larger than the cross-sectional diameter of the housing 10, specifically, the tube plate 20 has the same diameter as the first flange 301 and the second flange 302, the tube plate 20 is disposed between the first flange 301 and the second flange 302, and the tube plate 20 is clamped and fixed by connecting the first flange 301 and the second flange 302.

Specifically, in the present embodiment, a plurality of first fixing holes with central symmetry are provided on the first flange 301, a plurality of second fixing holes with central symmetry are provided on the second flange 302, the tube sheet 20 extends radially outward to form a clamping portion, the outer diameter of the clamping portion is equal to the diameter of the first flange 301 and the second flange 302, wherein a plurality of third fixing holes with central symmetry are provided on the clamping portion, the first fixing holes, the second fixing holes and the third fixing holes are coaxially arranged and correspond to each other in position, in the present embodiment, the first fixing holes, the second fixing holes and the third fixing holes are all through holes, the first fixing holes, the second fixing holes and the third fixing holes are penetrated by the fastening bolts 303, the fastening bolts 303 are locked, the fastening bolts 303 apply mutually approaching force to the first flange 301 and the second flange 302 to clamp the clamping portion, so that the position of the tube bundle fixedly connected with the tube sheet 20 is fixed, cannot move axially or rotate relative to the housing 10. The tube plate 20 can be fixed in the axial direction by penetrating the first fixing hole, the second fixing hole and the third fixing hole through the fastening bolts 303, the tube plate 20 can also be fixed in the radial direction, and meanwhile, the tube plate 20 can be prevented from rotating in the axial direction due to the effect of the fastening bolts 303, so that the tube bundle can be stably fixed in the shell 10, and the safety during leakage checking operation is ensured.

In this embodiment, the second flange 302 is hollow in the middle and exposes the tip 201 disposed on the tube sheet 20, and the operator can easily observe the tip 201. In addition, in order to enhance the structural strength of the second flange 302 and improve the limiting and fixing effect on the tube plate 20, the second flange 302 further comprises a reinforcing rib 3021 arranged in the radial direction, the strength of the second flange 302 can be improved through the reinforcing rib 3021, and meanwhile, the reinforcing rib 3021 covers the surface of the tube plate 20, so that the position of the tube plate 20 can be further fixed. In this embodiment, to reduce the shielding of the head 201 on the tube sheet 20 by the reinforcing ribs 3021, the reinforcing ribs 3021 are disposed between the two sets of the head 201, thereby preventing the reinforcing ribs 3021 from covering the head 201.

Optionally, the locking mechanism 30 may further include a first fixing portion disposed along a circumferential direction of the casing 10, a second fixing portion disposed along a radial direction of the pipe and extending outward, and a screw, wherein the first fixing portion is integrally connected to or welded to the outer wall surface of the casing 10, the first fixing portion is provided with a plurality of first screw holes having central symmetry, the second fixing portion is provided with a plurality of second screw holes having central symmetry, the first screw holes and the second screw holes are coaxial, and the screw penetrates through the first screw holes and the second screw holes and is in threaded connection with the first screw holes and the second screw holes. The tube sheet 20 is secured to the shell 10 by a threaded connection to achieve a relative fixation of the tube bundle position.

Fig. 1 in the present embodiment, the housing 10 includes a water inlet 101 and a water outlet 102, the water inlet 101 is disposed at the bottom of the housing 10 far from the end of the tube plate 20, the water outlet 102 is disposed at the top of the housing 10 near the end of the tube plate 20, and the output end of the pressurizing pump 401 is connected to the water inlet 101 of the housing 10 through the reducer 90. The water outlet 102 of the housing 10 is connected with the water inlet end of the water tank 50 through a water outlet pipe, the water outlet pipe is connected with the water outlet 102 through a reducer pipe 90, a safety valve 70 is arranged at the water outlet 102, the safety valve 70 is in a normally closed state, when the pressure in the housing 10 exceeds a safety range, the safety valve 70 is opened, and water in the housing 10 is discharged into the water tank 50 from the water outlet 102, so that the operation safety is ensured.

In this embodiment, an evacuation valve 80 is further included, the evacuation valve 80 is connected to the bottom of the housing 10, and the water in the housing 10 can be evacuated by opening the evacuation valve 80.

In the system, when leakage detection operation is performed, a water inlet valve 403, a pressurizing pump 401 and a water outlet valve 402 are opened in sequence, water in a water tank 50 is pressurized by the pressurizing pump 401 and then injected into a shell 10, a worker monitors the water pressure in the shell 10 through a pressure gauge 60, when the water pressure value reaches 1.5-2 times of the working pressure of a heat exchanger, the water outlet valve 402, the pressurizing pump 401 and the water inlet valve 403 are closed in sequence, the water outlet valve 402 is closed, backflow of the water in the shell 10 can be prevented, the water pressure in the shell 10 is kept constant, and meanwhile, the pressurizing pump 401 is protected. No internal leakage was demonstrated when there was no significant change in the value of the pressure gauge 60 within 30 minutes and no water was flowing out of the tip 201 on the tube sheet 20. When the value of the pressure gauge 60 is significantly reduced and water flows out from the end 201 of the tube plate 20, an internal leakage is indicated and a repair operation is required. Through this system staff can judge jointly whether the condition of interior hourglass takes place through observing the end 201 condition on manometer 60 and the tube sheet 20, and can adjust the pressure value in order to satisfy the leak hunting requirement through manometer 60 cooperation. Meanwhile, because the position between the tube bundle and the shell 10 is relatively fixed, large pressure can be injected to ensure that the detection can be carried out under the condition of small crack or no serious internal leakage, the accuracy of leakage detection is improved, and meanwhile, the system is also provided with a safety valve 70, so that the operation safety can be further ensured. Wherein the system fixes the tube sheet 20 and the shell 10 by using the locking mechanism 30, so that the tube bundle fixedly connected with the tube sheet 20 can be fixed in the shell 10, and the tube bundle can not move in the shell 10 or rotate relative to the shell 10. When the high pressure water is injected into the shell 10 during the leakage checking operation, the worker can judge whether the internal leakage occurs by observing whether the end 201 on the tube plate 20 leaks water. Under locking mechanism 30's effect, tube bank and casing 10 relatively fixed, consequently can avoid effectively tying the roll-off casing 10 to endanger staff's operation safety in the in-process of checking for leaks, can also increase simultaneously and suppress pressure to guarantee to detect the little or not serious condition of interior hourglass of crack, improved the accuracy of checking for leaks.

What has been described above is merely the principles and preferred embodiments of the present application. It should be noted that, for a person skilled in the art, several other modifications can be made on the basis of the principle of the present application, and these should also be considered as the scope of protection of the present application.

Claims

1. A leak detection system is characterized by comprising

The device comprises a locking mechanism (30), a pressing mechanism (40) and a water tank (50) which are used for fixing the position of a tube bundle in a shell (10) of the heat exchanger, wherein the input end of the pressing mechanism (40) is connected with the water tank (50), the output end of the pressing mechanism (40) is connected with the shell (10), and the device further comprises a pressure gauge (60) which is used for measuring the pressure in the shell (10).

2. A leak detection system according to claim 1, wherein the heat exchanger further comprises a tube sheet (20), the tube bundle being arranged within the shell (10), the tube sheet (20) being fixedly connected to the tube bundle, the tube sheet (20) being arranged at an end of the shell (10), the locking mechanism (30) connecting the shell (10) and the tube sheet (20) during leak detection such that the tube bundle is fixed to the shell (10).

3. A leak detection system according to claim 2, wherein the locking mechanism (30) comprises a first flange (301) and a second flange (302), the first flange (301) being arranged circumferentially along the housing (10) and fixedly connected to the outer wall of the housing (10) during leak detection, the tube sheet (20) being arranged between the first flange (301) and the second flange (302), the first flange (301) and the second flange (302) being connected and clamping the tube sheet (20).

4. A leak detection system according to claim 3, wherein the tube sheet (20) is provided with a clamping portion extending radially outwards, the clamping portion being clamped by the first flange (301) and the second flange (302).

5. A leak detection system according to claim 4, further comprising fastening bolts (303), wherein the first flange (301) is provided with at least two first fixing holes along the circumferential direction, the second flange (302) is provided with at least two second fixing holes along the circumferential direction, the clamping portion is provided with at least two third fixing holes along the circumferential direction, the first fixing holes, the second fixing holes and the third fixing holes are coaxial, and the fastening bolts (303) penetrate through the first fixing holes, the second fixing holes and the third fixing holes and lock the first flange (301) and the second flange (302) so that the first flange (301) and the second flange (302) clamp the clamping portion.

6. A leak detection system according to any of claims 3-5, wherein the second flange (302) further comprises radially arranged reinforcement ribs (3021).

7. The leak detection system of claim 2, wherein the locking mechanism (30) includes a first fastening portion disposed along a circumferential direction of the housing (10), a second fastening portion disposed along the tube sheet (20) and extending radially outward, the first fastening portion having at least two first screw holes disposed along the circumferential direction at intervals, the second fastening portion having at least two second screw holes disposed along the circumferential direction at intervals, the first screw holes and the second screw holes being coaxial, and a screw passing through and being in threaded connection with the first screw holes and the second screw holes.

8. A leak detection system according to claim 1, wherein the pressurizing mechanism (40) comprises a pressurizing pump (401), a water inlet valve (403) and a water outlet valve (402), the water inlet valve (403) being connected to an input of the pressurizing pump (401), the water outlet valve (402) being connected to an output of the pressurizing pump (401).

9. A leak detection system according to claim 1, further comprising a safety valve (70), wherein the housing (10) is provided with a water outlet (102), the water outlet (102) is connected to the water tank (50), and the safety valve (70) is arranged between the water outlet (102) and the water tank (50).

10. A leak detection system according to claim 1, further comprising an evacuation valve (80), said evacuation valve (80) being connected to the bottom of said housing (10).