CN115389107A

CN115389107A - Boiler pressure vessel leakage detection device

Info

Publication number: CN115389107A
Application number: CN202211040271.0A
Authority: CN
Inventors: 孙瑜; 王朝发; 李立升
Original assignee: KASTO ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Current assignee: KASTO ENVIRONMENTAL PROTECTION EQUIPMENT CO Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-11-25

Abstract

The invention relates to the field of boiler pressure containers, in particular to a leakage detection device for a boiler pressure container. Provided is a boiler pressure vessel leakage detection device capable of accurately judging whether a boiler pressure vessel has a leakage. The utility model provides a boiler pressure vessel leak testing device, is including detecting the framework, placing platform and first pump etc. and the wall is connected with places the platform in detecting the framework, places the platform and is used for supporting boiler pressure vessel and places, detects framework top intermediate position and is connected with first gas tube, and first gas tube upside is connected with first pump. According to the invention, the second inflator pump can be used for inflating the detection frame, meanwhile, the first inflator pump can be used for inflating the boiler pressure container, then, people can accurately judge whether the boiler pressure container leaks or not through the position of the piston rod frame, and the door plate and the sealing plate can cover and seal the interior of the detection frame, so that the detection result can be prevented from being inaccurate.

Description

Boiler pressure vessel leakage detection device

Technical Field

The invention relates to the field of boiler pressure containers, in particular to a leakage detection device for a boiler pressure container.

Background

Boiler pressure vessel possesses very important position in production and life, boiler pressure vessel is after processing is accomplished, all need test it, just can use after the test is qualified, boiler pressure vessel leak testing is an important process that needs the test, can have pressure monitor on the traditional boiler pressure vessel certainly, people judge the problem that boiler pressure vessel whether takes place to leak through the data on the pressure monitor, if the gap of revealing on the boiler pressure vessel is less, pressure monitor is difficult to the accurate detection boiler pressure vessel whether takes place to leak.

Therefore, a leak detection device for a boiler pressure vessel has been developed, which can accurately determine whether or not a leak is detected in the boiler pressure vessel.

Disclosure of Invention

In order to overcome the defect that whether the boiler pressure container leaks or not is difficult to accurately judge in the patent, the invention has the technical problems that: provided is a boiler pressure vessel leakage detection device capable of accurately judging whether a boiler pressure vessel has found a leakage.

The technical implementation scheme of the invention is as follows: the utility model provides a boiler pressure vessel leakage detection device, including the detection framework, place the platform, first pump, first gas tube, flexible pipe, seal assembly and inflation assembly, the bottom wall is connected with places the platform in the detection framework, it is used for supporting boiler pressure vessel and places to place the platform, it is connected with first gas tube to detect framework top intermediate position, first gas tube upside is connected with first pump, first gas tube passes detection framework upper portion, first gas tube downside is connected with flexible pipe, flexible pipe can be out of shape according to boiler pressure vessel's high emergence, so that detect different boiler pressure vessels, be equipped with the seal assembly who is used for hiding the sealed detection framework in the detection framework, be equipped with the inflation assembly who is used for carrying out aerifing to the detection framework inside in the detection framework, people can be according to the part position on the inflation assembly simultaneously, judge the degree that boiler pressure vessel leaked.

As preferred, seal assembly is including first fixed block, the door plant, fixing bolt and closing plate, it all is connected with first fixed block to detect frame body right wall front portion both sides from top to bottom, the rotary type is connected with the door plant between two first fixed blocks, the door plant is used for hiding the right side that detects the frame body, thereby can seal the detection frame body, the equal screw thread formula in both sides is connected with fixing bolt about the door plant rear portion, fixing bolt is used for fixing the door plant spacing, fixing bolt and detection frame body screw thread formula are connected, take off through rotating fixing bolt, make the door plant rotate and open, the door plant left side is connected with the closing plate.

Preferably, the inflation assembly comprises a second inflation pump, a second inflation tube, air outlet pipes, piston cylinders, piston rod frames and a distance sensor, the upper side of the left portion of the detection frame body is connected with the second inflation tube, the upper side of the second inflation tube is connected with the second inflation pump, the second inflation pump inflates air into the detection frame body through the second inflation tube, the left side of the detection frame body is connected with the two air outlet pipes, the two air outlet pipes are communicated with the detection frame body, the two air outlet pipes are symmetrically arranged front and back, the upper sides of the two air outlet pipes are connected with the piston cylinders, the piston rod frames are connected between the two piston cylinders in a sliding mode, gas in the detection frame body can enter the piston cylinders through the air outlet pipes, the piston rod frames can be pushed to move towards the upper side, the upper left side of the detection frame body is connected with the distance sensor, the distance sensor is electrically connected with the second inflation pump, when the piston rod frames move to the left side of the distance sensor, the distance sensor can detect whether the distance between the piston rod frames reaches a preset value.

Preferably, the boiler pressure container leakage detection device further comprises a display assembly for displaying the leakage degree of the boiler pressure container, the display assembly comprises a supporting block, a data table, a pointer, a supporting rod, a first rack, a first gear and a first spring, the supporting block is connected to the upper left side of the detection frame body, the data table is connected to the left side of the supporting block, the pointer is rotatably connected to the middle position of the data table, the pointer is used for accurately expressing the leakage degree of the boiler pressure container, the supporting rod is connected to the left portion of the supporting block in a rotating mode, the pointer penetrates through the supporting rod, the first gear is connected to the right side of the pointer, the first rack is slidably connected to the lower left portion of the supporting block, the piston rod frame moves upwards to be in contact with the first rack, the first gear can rotate due to the fact that the first rack moves upwards, the pointer can rotate, the first rack is meshed with the first gear, the first spring is connected between the lower portion of the first rack and the lower side of the supporting block, and the first spring is wound on the first rack.

Preferably, the device further comprises a speed measurement component for measuring the moving speed of the piston rod frame, the speed measurement component comprises guide blocks, a second rack, a second spring, a support frame, a second gear, a rotating shaft, a rotating disc, a magnet, a speed measurement sensor and a display screen, the left side of the upper portion of the detection frame body is connected with the two guide blocks, the guide blocks are located between the two piston cylinders, the two guide blocks are symmetrically arranged front and back, the second rack is connected to the guide blocks in a sliding mode, the second spring is connected between the lower portion of the second rack and the lower side of the guide blocks, the second spring is wound on the second rack, the second spring is used for moving and resetting of the second rack, the left side of the middle portion of the detection frame body is connected with the support frame, the left portion of the support frame is rotatably connected with the rotating shaft, the front side and the back side of the rotating shaft are connected with the second gear, the second rack is meshed with the second gear, the middle portion of the rotating shaft is connected with the rotating disc, the outer wall of the rotating disc is evenly connected with a plurality of magnets in the circumferential direction, the middle portion of the left side of the support frame is connected with the speed measurement sensor, the sensor is used for measuring the rate of the magnet to be measured, the display screen is electrically connected with the display screen.

Preferably, the air tightness detection device further comprises a leakage-proof assembly used for enhancing the air tightness of the detection frame body, the leakage-proof assembly comprises an air bag and an air guide pipe, a filling groove is formed in the right portion of the detection frame body, the air bag is connected to the filling groove, the air guide pipe is connected between the front side and the rear side of the first inflation pipe and the upper side of the air bag, and the air guide pipe is used for inflating the air bag.

As preferred, still including being used for carrying on spacing subassembly to boiler pressure vessel, spacing subassembly is including second fixed block, stopper and third spring, and both sides all are connected with the second fixed block around detecting the framework inner wall, and equal slidingtype is connected with the stopper on the second fixed block, and the stopper is used for pressing from both sides tightly spacing to boiler pressure vessel, all is connected with the third spring between the one side that the stopper was kept away from each other and the second fixed block inner wall.

Preferably, the limiting block is in an arc shape, so that the limiting block can be better attached to the body of the boiler pressure container, and the boiler pressure container can be better clamped and limited.

The invention has the following advantages: 1. according to the invention, the second inflator pump can be used for inflating the detection frame, meanwhile, the first inflator pump can be used for inflating the boiler pressure container, then, people can accurately judge whether the boiler pressure container leaks or not through the position of the piston rod frame, and the door plate and the sealing plate can cover and seal the interior of the detection frame, so that the inaccuracy of a detection result can be prevented.

2. The invention can simply and clearly inform people of the leakage degree of the boiler pressure container through the position pointed by the pointer on the data sheet.

3. The invention can detect the rotating speed of the magnet through the speed measuring sensor, indirectly reflect the moving speed of the piston cylinder, and then display the detected speed through the display screen, so that people can conveniently judge the gas leakage speed in the boiler pressure vessel.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of another perspective structure according to the present invention.

Fig. 3 is a schematic internal perspective view of the present invention.

Fig. 4 is a partial perspective view of the present invention.

Fig. 5 is a schematic view of the structure of the sealing assembly of the present invention.

Fig. 6 is a partial structural schematic view of the seal assembly of the present invention.

FIG. 7 is a schematic view of the construction of the inflation assembly of the present invention.

FIG. 8 is a schematic view of another perspective structure of the inflation assembly of the present invention.

FIG. 9 is a schematic view of a display module according to the present invention.

FIG. 10 is a schematic view of a first partial structure of a display module according to the present invention.

FIG. 11 is a second partial structure of a display module according to the present invention.

Fig. 12 is a schematic structural diagram of the velocity measuring assembly according to the present invention.

Fig. 13 is a schematic view of a partial structure of the velocity measuring module according to the present invention.

FIG. 14 is a schematic view of a leakage preventing member according to the present invention.

Fig. 15 is a schematic structural view of the spacing assembly of the present invention.

Fig. 16 is a partial structural schematic view of the spacing assembly of the present invention.

Wherein the figures include the following reference numerals: 1: detection frame body, 2: placing table, 3: first inflator, 4: first gas-filled tube, 5: a telescopic pipe, 6: seal assembly, 601: first fixed block, 602: door panel, 603: fixing bolt, 604: sealing plate, 7: inflation assembly, 701: second inflator, 702: second inflation tube, 703: outlet duct, 704: piston cylinder, 705: piston rod holder, 706: distance sensor, 8: display assembly, 801: support block, 802: data table, 803: pointer, 804: support bar, 805: first rack, 806: first gear, 807: first spring, 9: velocity measurement component, 901: guide block, 902: second rack, 903: second spring, 904: support frame, 905: second gear, 906: rotation shaft, 907: turntable, 908: magnet, 909: speed measuring sensor, 910: display screen, 10: leak protection assembly, 1001: filling grooves, 1002: airbag, 1003: air duct, 11: spacing subassembly, 1101: second fixed block, 1102: stopper, 1103: a third spring.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

Example 1

The utility model provides a boiler pressure vessel leakage detection device, as shown in fig. 1-4, including detecting framework 1, place platform 2, first pump 3, first gas tube 4, flexible pipe 5, seal assembly 6 and gas charging assembly 7, the platform 2 of placing that can be used for placing boiler pressure vessel is welded to the inner bottom wall in detecting framework 1, the top intermediate position of detecting framework 1 is connected with first gas tube 4, first gas tube 4 upside fixedly connected with first pump 3, first gas tube 4 passes detecting framework 1 upper portion, first gas tube 4 downside is connected with flexible pipe 5, flexible pipe 5 can take place the change of adaptability according to boiler pressure vessel's height, be equipped with seal assembly 6 on detecting framework 1, seal assembly 6 is used for hiding sealed detecting framework 1, be equipped with gas charging assembly 7 on detecting framework 1, gas charging assembly 7 is used for aerifing the inside of detecting framework 1.

As shown in fig. 1, 2, 3, 5 and 6, the sealing assembly 6 includes a first fixing block 601, a door plate 602, a fixing bolt 603 and a sealing plate 604, the first fixing block 601 is welded to both sides of the front portion of the right wall of the detection frame 1, the door plate 602 capable of covering the detection frame 1 is rotatably connected between the two first fixing blocks 601, the fixing bolt 603 is threadedly connected to both sides of the rear portion of the door plate 602, the fixing bolt 603 is threadedly connected to the detection frame 1, and the sealing plate 604 capable of sealing the detection frame 1 is connected to the left side of the door plate 602.

As shown in fig. 1, fig. 2, fig. 3, fig. 7 and fig. 8, the inflation assembly 7 includes a second inflator 701, a second inflator 702, an outlet pipe 703, piston cylinders 704, a piston rod rack 705 and a distance sensor 706, the upper side of the left portion of the detection frame 1 is connected with the second inflator 702, the upper side of the second inflator 702 is connected with the second inflator 701, the left side of the detection frame 1 is fixedly connected with two outlet pipes 703, the two outlet pipes 703 are communicated with the detection frame 1, the two outlet pipes 703 are symmetrically arranged in the front-back direction, the upper sides of the two outlet pipes 703 are both connected with the piston cylinders 704, the piston rod rack 705 is slidably connected between the two piston cylinders 704, the upper left side of the detection frame 1 is connected with the distance sensor 706, and the distance sensor 706 is electrically connected with the second inflator 701.

When people need to detect whether a boiler pressure container (hereinafter referred to as boiler pressure container) is leaked, the device can be used for realizing the detection, firstly, people rotate the fixing bolt 603 to separate the fixing bolt 603 from the detection frame body 1, then people rotate the door plate 602 to the right side to drive the sealing plate 604 to rotate to the right side, then people place the boiler pressure container to be detected on the placing table 2, at the moment, the telescopic pipe 5 is communicated with the upper part of the boiler pressure container, the telescopic pipe 5 can be adaptively stretched according to the height of the boiler pressure container, after the boiler pressure container is placed, people rotate and close the door plate 602 to the left side to drive the sealing plate 604 to rotate and reset to the left side, the sealing plate 604 and the door plate 602 are mutually matched to cover and seal the detection frame body 1, then people rotate the fixing bolt 603 reversely to enable the fixing bolt 603 to be in threaded connection with the detection frame body 1 again, the fixing bolt 603 can lock the door plate 602, then people start the second inflator 701, the second inflator 701 is started to inflate the interior of the detection frame 1 through the second inflation tube 702, the piston rod rack 705 can move upwards through the air outlet tube 703 along with the increase of the air pressure in the detection frame 1, then when the piston rod rack 705 moves to the position of the distance sensor 706, the distance sensor 706 can detect that the distance between the piston rod rack and the piston rod rack reaches a preset value, at the moment, the second inflator 701 is controlled to be turned off, at the moment, the inflation to the interior of the detection frame 1 is stopped, then people start the first inflator 3, the first inflator 3 is started to inflate the interior of the boiler pressure container through the first inflation tube 4, if the boiler pressure container leaks, the air pressure in the detection frame 1 can be increased, and then make the piston rod frame 705 continue to move to the upside, if the boiler pressure vessel does not leak, the air pressure in the detection frame body 1 will remain unchanged, and then make the position of the piston rod frame 705 remain unchanged, so people can judge whether the boiler pressure vessel leaks by observing the position of the piston rod frame 705, then people close the first inflator pump 3, after the detection is completed, then people take out the boiler pressure vessel, repeat the above operations and pass through the second inflator pump 701, can inflate in the detection frame body 1, simultaneously the first inflator pump 3 can inflate in the boiler pressure vessel, then people can judge whether the boiler pressure vessel leaks through the position of the piston rod frame 705, and the door plant 602 and the sealing plate 604 can cover and seal the inside of the detection frame body 1, and then can prevent the detection result from being inaccurate.

Example 2

On the basis of embodiment 1, as shown in fig. 1, 2, 3, 9, 10 and 11, the present invention further includes a display component 8 for displaying the leakage degree of the boiler pressure vessel, the display component 8 includes a supporting block 801, a data table 802, a pointer 803, a supporting rod 804, a first rack 805, a first gear 806 and a first spring 807, the supporting block 801 is welded on the left upper side of the detecting frame 1, the data table 802 is connected to the left side of the supporting block 801, the pointer 803 is rotatably connected to the middle position of the data table 802, the supporting rod 804 is connected to the left portion inside the supporting block 801, the pointer 803 is rotatably connected to the supporting rod 804, the pointer 803 passes through the supporting rod 804, the first gear 806 is connected to the right side of the pointer 803, the first rack 805 is slidably connected to the left lower portion of the supporting block 801, the first rack 805 is engaged with the first gear 806, the piston rod holder 705 moves upward and contacts with the first rack 805, the first spring 807 capable of moving and resetting the first rack 805 is connected between the lower portion of the first rack 805 and the lower portion of the supporting block 801, and the first spring is wound around the first rack 805.

When people need to know the leakage degree of the boiler pressure vessel, firstly, the piston rod frame 705 moves upwards to be in contact with the first rack 805, if the boiler pressure vessel leaks, the piston rod frame 705 moves upwards continuously to push the first rack 805 to move upwards, the first spring 807 is compressed, the first rack 805 moves upwards to rotate the first gear 806, the first gear 806 rotates to drive the pointer 803 to rotate, then when the piston rod frame 705 stops moving, the pointer 803 stops rotating, then people can know the leakage degree of the boiler pressure vessel by looking at the position pointed by the pointer 803, then when the piston rod frame 705 moves downwards to reset, the piston rod frame moves downwards to release the first rack 805, then the first rack 805 moves downwards under the action of the first spring 807 to reset, the first rack 805 moves downwards to drive the first gear 806 to rotate backwards, the first gear 806 rotates backwards to drive the pointer to rotate backwards, the operation is repeated, and the leakage degree of the boiler pressure vessel can be simply informed by people according to the position pointed by the pointer 803 on the table 802.

As shown in fig. 2, fig. 3, fig. 12 and fig. 13, the apparatus further includes a speed measurement component 9 for measuring a moving speed of the piston rod frame 705, the speed measurement component 9 includes a guide block 901, a second rack 902, a second spring 903, a support frame 904, a second gear 905, a rotating shaft 906, a rotating disc 907, a magnet 908, a speed measurement sensor 909 and a display screen 910, two guide blocks 901 are welded to the left side of the upper portion of the detection frame 1, the guide blocks 901 are located between the two piston cylinders 704, the two guide blocks 901 are symmetrically arranged in a front-rear direction, the guide block 901 is slidably connected with the second rack 902, a second spring 903 is connected between the lower portion of the second rack 902 and the lower side of the guide block 901, the second spring 903 is wound around the second rack 902, the second spring 903 can move and reset the second rack 902, the support frame 904 is welded to the left side of the middle portion of the detection frame 1, the left portion of the support frame 904 is rotatably connected with the rotating shaft 906, the front and rear sides of the rotating shaft 906 are connected with the second gear 905, the second rack 902 and the second gear are engaged with the second gear, the rotating shaft 906, the rotating disc 906 is connected with the rotating disc 906, the outer wall of the rotating disc 908 is connected with the plurality of the support frames 904 uniformly connected with the magnet 904 along a circumferential direction, the middle of the support frame 904, the display screen 910, and the display screen 910 are electrically connected with the display screen 909.

When people need to detect the moving speed of the piston rod frame 705, firstly, the piston rod frame 705 moves upwards and contacts with the second rack 902, if the boiler pressure vessel leaks, the piston rod frame 705 continues to move upwards and drives the second rack 902 to move upwards, at the moment, the second spring 903 is compressed, the second rack 902 moves upwards to enable the second gear 905 to rotate anticlockwise, the second gear 905 rotates anticlockwise to drive the rotating shaft 906, the rotating disc 907 and the magnet 908 to rotate anticlockwise, at the moment, the speed measurement sensor 909 can detect the rotating speed of the magnet 908, the detected data can be transmitted to the display screen 910, then the display screen 910 can display the detected speed, then people can know the moving speed of the piston rod frame 705 by observing the data on the display screen 910, so that people can judge the leaking speed of the gas in the boiler pressure vessel, after the detection is completed, the piston rod frame 705 moves downwards and resets, the piston rod frame 705 moves downwards, so that the second rack 902 is released, then the second rack 902 moves downwards under the action of the second gear 902, people can detect the rotating shaft 906 and rotate the rotating shaft 908, and the rotating speed of the magnet 908 after the detection, people detect the leaking gas in the piston rod frame 904, the rotating shaft 906 and the rotating by the rotating shaft 906 and the rotating shaft, the rotating shaft 908, the rotating of the rotating piston rod frame 904 can be detected by the rotating shaft, the rotating shaft 906 and the rotating speed of the rotating piston rod frame 910, so that the piston rod frame 705 can be detected gas in a leakage, the piston rod frame 704 can be detected by the rotating shaft 906 and the rotating shaft 908, and the rotating shaft 906, and the rotating shaft 908, and the rotating speed of the rotating shaft 908, and the rotating piston rod frame.

As shown in fig. 1, 2, 3, 4 and 14, the gas tightness detection device further comprises a leak-proof assembly 10 for enhancing the gas tightness of the detection frame body 1, the leak-proof assembly 10 comprises a gas bag 1002 and a gas guide tube 1003, a filling groove 1001 is formed in the right portion of the detection frame body 1, the gas bag 1002 is connected to the filling groove 1001, the gas bag 1002 can enhance the gas tightness of the detection frame body 1, and the gas guide tubes 1003 capable of guiding gas are connected between the front side and the rear side of the first inflation tube 4 and the upper side of the gas bag 1002.

For the accuracy of the detection result, it is necessary to prevent the gas leakage in the detection frame body 1, when the first inflator 3 is turned on, the first inflator 4 and the gas guide tube 1003 can inflate the gas bag 1002, so that the gas bag 1002 swells, the gas tightness of the detection frame body 1 can be enhanced, and further the gas leakage in the detection frame body 1 can be prevented, and then after the boiler pressure container is detected, the first inflator 3 is turned off, so that the gas bag 1002 stops inflating, and the gas bag 1002 inflates to swell by repeating the above operations, so that the gas tightness of the detection frame body 1 can be enhanced, and further the gas leakage in the detection frame body 1 can be prevented.

As shown in fig. 3, fig. 15 and fig. 16, the boiler pressure container limiting device further comprises a limiting component 11 for limiting the boiler pressure container, the limiting component 11 comprises a second fixing block 1101, a limiting block 1102 and a third spring 1103, the second fixing block 1101 is welded on the front side and the rear side of the inner wall of the detection frame body 1, the limiting block 1102 capable of limiting the boiler pressure container is connected to the second fixing block 1101 in a sliding mode, the third spring 1103 is connected between one side, away from the limiting block 1102, of the inner wall of the second fixing block 1101, the third spring 1103 can enable the limiting block 1102 to move and reset, the limiting block 1102 is in an arc shape and can be better attached to the body of the boiler pressure container, and therefore the boiler pressure container can be better clamped and limited.

When people need carry on spacingly to boiler pressure vessel, people place boiler pressure vessel between two stopper 1102, along with placing of boiler pressure vessel, can make stopper 1102 keep away from the removal each other, third spring 1103 is compressed this moment, stopper 1102 can press from both sides tight spacing to boiler pressure vessel, thereby can prevent that boiler pressure vessel from taking place to rock, later can detect boiler pressure vessel, the detector is accomplished the back, people take out boiler pressure vessel, then stopper 1102 is close to each other under the effect of third spring 1103 and removes to reset, operation more than the repetition can press from both sides tight spacing to boiler pressure vessel through stopper 1102, and then can prevent that boiler pressure vessel from taking place to rock, improve boiler pressure vessel's stability.

It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. The utility model provides a boiler pressure vessel leak testing device, including detection framework (1), place platform (2), first pump (3), first gas tube (4) and flexible pipe (5), the wall is connected with places platform (2) in detection framework (1), it is used for supporting boiler pressure vessel and places to place platform (2), it is connected with first gas tube (4) to detect framework (1) top intermediate position, first gas tube (4) pass detection framework (1) upper portion, first gas tube (4) upside is connected with first pump (3), first gas tube (4) downside is connected with flexible pipe (5), flexible pipe (5) can be out of shape according to boiler pressure vessel's high emergence, so that detect different boiler pressure vessels, the utility model is characterized by, still including seal assembly (6) and gas filled assembly (7), be equipped with seal assembly (6) that are used for hiding sealed detection framework (1) on the detection framework (1), be equipped with gas filled assembly (7) that are used for carrying out the gas filled to detection framework (1) inside on the detection framework, people can come the degree of leakage of pressure vessel according to gas filled assembly (7) simultaneously, the degree of judging boiler pressure vessel.

2. The leakage detection device for the boiler pressure vessel as claimed in claim 1, wherein the sealing assembly (6) comprises first fixing blocks (601), a door plate (602), fixing bolts (603) and sealing plates (604), the first fixing blocks (601) are connected to the upper and lower sides of the front portion of the right wall of the detection frame body (1), the door plate (602) is rotatably connected between the two first fixing blocks (601), the door plate (602) is used for covering the right side of the detection frame body (1) so as to seal the detection frame body (1), the fixing bolts (603) are threadedly connected to the upper and lower sides of the rear portion of the door plate (602), the fixing bolts (603) are used for fixing and limiting the door plate (602), the fixing bolts (603) are threadedly connected with the detection frame body (1), the door plate (602) can be rotated and opened by rotating and removing the fixing bolts (603), and the sealing plates (604) are connected to the left side of the door plate (602).

3. The apparatus for detecting the leakage of the pressure vessel of the boiler as claimed in claim 2, wherein the air-filling assembly (7) comprises a second air-filling pump (701), a second air-filling pipe (702), an air outlet pipe (703), a piston cylinder (704), a piston rod frame (705) and a distance sensor (706), the upper side of the left portion of the detecting frame (1) is connected with the second air-filling pipe (702), the upper side of the second air-filling pipe (702) is connected with the second air-filling pump (701), the second air-filling pump (701) is filled into the detecting frame (1) through the second air-filling pipe (702), the left side of the detecting frame (1) is connected with two air outlet pipes (703), the two air outlet pipes (703) are communicated with the detecting frame (1), the two air outlet pipes (703) are symmetrically arranged in the front-back direction, the piston cylinders (704) are connected to the upper sides of the two air outlet pipes (703), the piston rod frame (705) is slidably connected between the piston rod frame (704), the air in the detecting frame (1) enters the piston cylinder (74) through the air outlet pipes (703), thereby the piston cylinder (706) can push the piston rod frame (705) to move upward, the distance sensor (706) is connected with the distance sensor (706), and the distance sensor (706) is electrically connected to the left side of the piston rod frame (706), the distance sensor (706) can detect whether the distance between the piston rod holders (705) reaches a preset value.

4. The leakage detecting device for the boiler pressure vessel as claimed in claim 3, further comprising a display component (8) for displaying the leakage degree of the boiler pressure vessel, wherein the display component (8) comprises a supporting block (801), a data table (802), a pointer (803), a supporting rod (804), a first rack (805), a first gear (806) and a first spring (807), the supporting block (801) is connected to the upper left side of the detecting frame (1), the data table (802) is connected to the left side of the supporting block (801), the pointer (803) is rotatably connected to the middle position of the data table (802), the pointer (803) is used for accurately expressing the leakage degree of the boiler pressure vessel, the supporting rod (804) is connected to the left inside of the supporting block (801), the pointer (803) is rotatably connected to the supporting rod (804), the pointer (803) passes through the supporting rod (804), the first gear (806) is connected to the right side of the pointer (803), the first rack (805) is slidably connected to the lower left side of the supporting block (801), the piston rod holder (705) is moved upward to contact with the first rack (805), the first gear (805) is moved to cause the first gear (806) to rotate, and the pointer (806) to be meshed with the first rack (806), a first spring (807) is connected between the lower part of the first rack (805) and the lower side of the supporting block (801), and the first spring (807) is wound on the first rack (805).

5. The boiler pressure vessel leakage detection device according to claim 4, characterized by further comprising a speed measurement component (9) for measuring the moving speed of the piston rod frame (705), wherein the speed measurement component (9) comprises two guide blocks (901), a second rack (902), a second spring (903), a support frame (904), a second gear (905), a rotating shaft (906), a rotating disc (907), a magnet (908), a speed measurement sensor (909) and a display screen (910), the left side of the upper portion of the detection frame (1) is connected with the two guide blocks (901), the guide blocks (901) are located between the two piston cylinders (704), the two guide blocks (901) are symmetrically arranged in the front-back direction, the second rack (902) is slidably connected to the guide blocks (901), a second spring (903) is connected between the lower portion of the second rack (902) and the lower side of the guide blocks (901), the second spring (903) is wound around the second rack (902), the second spring (903) is used for moving and resetting the second rack (902), the support frame (904) is connected to the left side of the detection frame (1), the support frame (904) is connected to the left side of the support frame (904), the second gear (906) and the second rotating shaft (905) are meshed with the second gear (906), the middle part of the rotating shaft (906) is connected with a rotating disc (907), the outer wall of the rotating disc (907) is uniformly connected with a plurality of magnets (908) along the circumferential direction, the middle position on the left side of the supporting frame (904) is connected with a speed measuring sensor (909), the speed measuring sensor (909) is used for measuring the rotating speed of the magnets (908), the upper side of the supporting frame (904) is connected with a display screen (910), the display screen (910) is electrically connected with the speed measuring sensor (909), and the display screen (910) is used for displaying the speed measured by the speed measuring sensor (909).

6. The boiler pressure vessel leakage detection device according to claim 5, further comprising a leakage prevention assembly (10) for enhancing the air tightness of the detection frame body (1), wherein the leakage prevention assembly (10) comprises an air bag (1002) and an air duct (1003), a filling groove (1001) is formed in the right portion of the detection frame body (1), the air bag (1002) is connected to the filling groove (1001), the air duct (1003) is connected between the front side and the rear side of the first inflation tube (4) and the upper side of the air bag (1002), and the air duct (1103) is used for inflating the air bag (1002).

7. The leakage detection device for the boiler pressure vessel as claimed in claim 6, further comprising a limiting component (11) for limiting the boiler pressure vessel, wherein the limiting component (11) comprises a second fixing block (1101), a limiting block (1102) and a third spring (1103), the second fixing block (1101) is connected to the front side and the rear side of the inner wall of the detection frame body (1), the limiting block (1102) is connected to the second fixing block (1101) in a sliding manner, the limiting block (1102) is used for clamping and limiting the boiler pressure vessel, and the third spring (1103) is connected between the side, away from each other, of the limiting block (1102) and the inner wall of the second fixing block (1101).

8. The leakage detecting device for the boiler pressure vessel as claimed in claim 7, wherein the stopper (1102) is arc-shaped, and can be better attached to the body of the boiler pressure vessel, so as to better clamp and limit the boiler pressure vessel.