CN114323469B - Airtightness detection method for pipeline system of liquefied gas filling station - Google Patents

Abstract

The application relates to a pipeline system airtightness detection method for a liquefied gas filling station, which relates to the field of pipeline detection and comprises the following specific steps: installing a detection device: installing a blind plate at one end of the pipeline to be detected, installing a plugging plate at the other end of the pipeline to be detected, and coating soapy water on the outer side wall of the pipeline to be detected; and (3) detection: inflating the pipeline to be tested through an inflating nozzle on the plugging plate, keeping the gas in the pipeline to be tested for at least five minutes, and checking whether the pipeline to be tested has a leakage point; disassembling the detection device: and after the inspection is finished, exhausting gas, and disassembling the blind plate and the plugging plate. The utility model provides an effect that has lies in the gas tightness that can convenient and fast detect the pipeline, reduces the possibility that takes place to leak when using pipe-line system, is favorable to reducing the possibility that later stage pipeline operation stage need be maintained.

Description

Airtightness detection method for pipeline system of liquefied gas filling station

Technical Field

The application relates to the field of pipeline detection, in particular to a pipeline system airtightness detection method for a liquefied gas filling station.

Background

The liquefied gas filling station is a liquefied petroleum gas storage and distribution station, which is a facility for storing and distributing liquefied petroleum gas and has the main task of receiving, storing and filling liquefied petroleum gas into steel cylinders, distribution tank cars and other movable containers.

After the pipeline is installed, welded and subjected to nondestructive testing, before the filling station is put into practical production and use, the pipeline of the filling station needs to detect the air tightness of the pipeline, otherwise, the pipeline is easy to leak in use, so that raw materials are easy to waste, and production safety problems can be caused to a factory.

Disclosure of Invention

In order to detect the problem of pipeline gas tightness, the application provides a pipeline system gas tightness detection method of a liquefied gas filling station.

The application provides an airtight detection method of pipe-line system in liquefied gas filling station adopts following technical scheme:

a method for detecting the air tightness of a pipeline system of a liquefied gas filling station comprises the following specific steps:

installing a detection device: installing a blind plate at one end of the pipeline to be detected, installing a plugging plate at the other end of the pipeline to be detected, and coating soapy water on the outer side wall of the pipeline to be detected;

and (3) detection: inflating the pressure test pipeline through an inflating nozzle on the blocking plate, keeping the gas in the pipeline to be detected for at least five minutes, and checking whether the pipeline to be detected has a leakage point;

disassembling the detection device: and after the inspection is finished, exhausting gas, and disassembling the blind plate and the plugging plate.

Through adopting above-mentioned technical scheme, the utilization is aerifyd to waiting to detect in the pipeline to coating soapy water on the pipeline lateral wall, if there is the leak point, the bubbling can take place for soapy water, then need maintain this moment, if there is not the leak point, then wait to detect the pipeline meet the requirements, with this gas tightness of detection pipeline that can convenient and fast, reduce the possibility that takes place to leak when using pipe-line system, be favorable to reducing the possibility that later stage pipe operation stage need be maintained.

In a specific embodiment, in the step of "installing the detection device", the pipeline to be detected is coated with soapy water by using a coating device.

Through adopting above-mentioned technical scheme, utilize the coating device to the fertile soap water of pipeline coating, can replace artifical manual mode of coating like this, improve the efficiency of the fertile soap water of coating, also can alleviate workman work burden.

In a specific can embodiment, the coating device is including removing the seat, it is used for the drive to remove the seat along waiting to detect the driving piece of pipeline axial displacement to be equipped with on the removal seat, it is used for waiting to detect the clearance subassembly that the pipeline lateral wall cleared up to be equipped with on the seat to remove, it is equipped with the subassembly that sprays that is used for waiting to detect the soapy water of coating on the pipeline lateral wall to remove the seat.

Through adopting above-mentioned technical scheme, when treating the fertile water of detection pipeline lateral wall coating as needs, utilize earlier the clearance subassembly will wait to detect the pipeline lateral wall and clear up, recycle sprays the subassembly with water and spray to waiting to detect on the pipeline lateral wall to can form the fertile water film, with this can detect the gas tightness of waiting to detect the pipeline.

In a specific implementation scheme, the spraying assembly comprises a vertical frame arranged on the moving seat, a vertical plate is arranged on the vertical frame, a driving air cylinder is arranged on the vertical plate, a driving rack is arranged on the end wall of a piston rod of the driving air cylinder, the axis of the driving air cylinder is perpendicular to the axis of the pipeline to be detected, and an arc-shaped toothed ring meshed with the driving rack is rotatably arranged on the vertical plate;

a fixed plate is hinged to one side, away from the moving seat, of the vertical plate, through notches are formed in the fixed plate and the vertical plate, the two through notches are arranged oppositely and used for the pipeline to be detected to pass through, one side of the fixed plate is hinged to the vertical plate, the other side of the fixed plate is detachably connected with the vertical plate through bolts, a linkage ring plate is rotatably arranged on the fixed plate, and the inner side wall of the linkage ring plate and the inner side wall of the arc-shaped toothed ring are combined to form a through hole for the pipeline to be detected to pass through;

a plurality of sliding grooves are formed in the vertical plate and the fixed plate along the radial direction of the through hole, the sliding grooves are uniformly distributed along the circumferential direction of the through hole, one side of each sliding groove is closed, the other side of each sliding groove is communicated with the through notch, a moving plate is arranged in each sliding groove in a sliding manner, a sliding column is arranged on the moving plate, and a spray head is arranged on one side, away from the sliding column, of the moving plate;

waist-shaped grooves for the sliding columns to slide are formed in the side walls of the arc-shaped toothed ring and the link plate, and the waist-shaped grooves are used for driving the moving plate to extend out of the sliding grooves or retract into the sliding grooves;

the soap water dispenser is characterized in that a water tank for storing soap water is arranged in the movable seat, a conveying water pump is arranged on the movable seat, a water conveying pipe is arranged between the water tank and the conveying water pump, and a hose is arranged between the conveying water pump and the spray head.

Through adopting above-mentioned technical scheme, when the pipeline is examined to waiting to detect to needs, at first remove the grudging post and wait to detect the pipeline below, with riser and arc ring gear cover in the below of waiting to detect the pipeline, the rotation fixed plate, thereby can wait to detect the top of pipeline with the link ring plate cover, and utilize the bolt to connect link ring plate and arc ring gear, utilize and drive actuating cylinder drive rack and remove, thereby can drive arc ring gear and link ring plate and rotate simultaneously, and then can drive the slip post and be bad at waist type inslot, and then drive the movable plate and slide in the groove that slides again, with this can move the shower nozzle to be close to waiting to detect pipeline lateral wall one side, the fertile soap water of delivery pump in with the water tank is carried the shower nozzle along raceway and hose, the shower nozzle is sprayed fertile soap water to waiting to detect on the pipeline lateral wall, can convenient and fast wait to detect on the pipeline lateral wall with fertile soap water coating.

In a specific implementation scheme, the cleaning assembly comprises a support arranged on the moving seat, a rotating arc toothed plate is rotatably arranged on the support, a linkage arc toothed plate is rotatably arranged on the support, the rotating arc toothed plate and the linkage arc toothed plate are connected through bolts, a moving hole for the pipeline to be detected to pass through is formed by the inner side wall of the rotating arc toothed plate and the inner side wall of the linkage arc toothed plate, a driving motor is arranged on the support, and a driving gear meshed with the rotating arc toothed plate and the linkage arc toothed plate is coaxially arranged on the driving motor;

and the rotating arc toothed plate is provided with a cleaning piece for cleaning the outer side wall of the pipeline to be detected.

Through adopting above-mentioned technical scheme, utilize driving motor to drive gear and rotate to can drive and rotate arc pinion rack and linkage arc pinion rack and rotate, and then can drive clearance piece and carry out the circumferential motion along waiting to detect the pipeline lateral wall, with this can convenient and fast treat that the pipeline lateral wall of detecting enters the clearance, with this can reduce to detect dust and impurity on the pipeline lateral wall, reduce the possibility that dust and impurity influence the fertile water film-forming.

In a specific can embodiment, the clearance piece is including setting up be equipped with the connecting rod on the rotation arc pinion rack lateral wall, the connecting rod is followed wait to detect the radial setting of pipeline, be equipped with on the end wall of connecting rod and be used for the clearance wait to detect the clearance piece of pipeline lateral wall.

Through adopting above-mentioned technical scheme, when rotating the ARC pinion rack and rotating to can drive the connecting rod and rotate, and then can drive the rotation of clearance piece, thereby the lateral wall that waits to detect the pipeline can be cleaned to the clearance piece, with this dust and impurity on can reducing to wait to detect the pipeline lateral wall.

In a specific implementation scheme, a rotating frame is arranged on the side wall of the rotating arc toothed plate, a power motor is arranged on the rotating frame, a lead screw is coaxially arranged on a motor shaft of the power motor, a sliding block is arranged on the lead screw, a sliding groove for the sliding block to slide is arranged on the rotating frame, the sliding groove is arranged along the radial direction of the rotating arc toothed plate, and the connecting rod is connected with one side, far away from the sliding groove, of the sliding block.

Through adopting above-mentioned technical scheme, owing to wait to detect that pipeline diameter is likely to change, so utilize motor power drive lead screw to rotate to can drive the slider and remove, and then can adjust the position of connecting rod, and then can adjust the position of clearance piece, with this can adapt to the different pipe diameters wait to detect the pipeline.

In a specific implementation scheme, a rotating motor is arranged at one end of the sliding block, which is far away from the lead screw, a connecting rod is coaxially arranged on a motor shaft of the rotating motor, the connecting rod is arranged along the radial direction of the pipeline to be detected, a cleaning block is arranged on the end wall of the connecting rod, and an extrusion rod is arranged on the sliding block and between the connecting rod and the lead screw;

the movable seat is respectively provided with a fixed box and a transfusion water pump, an air bag for storing soapy water is arranged in the fixed box, a transfusion tube is arranged between the air bag and the transfusion water pump, a liquid feeding tube is arranged between the transfusion water pump and the water tank, the air bag is provided with a connecting tube for conveying the soapy water, and the connecting tube and the transfusion tube are both provided with one-way valves;

remove and be equipped with the case that supplies connecting rod and clearance piece to stretch into on the seat, the one end that the gasbag was kept away from to the connecting pipe stretches into in the case, it has the clamp plate that supplies the extrusion of stripper bar to articulate on the seat to remove, the one end that the case was kept away from to the clamp plate is equipped with the briquetting that is used for extrudeing the gasbag, the pin joint is equipped with the torsional spring, torsional spring one end with the clamp plate is connected, the torsional spring other end with the case is connected.

By adopting the technical scheme, when the cleaning block cleans the pipeline to be detected, the rotating motor is utilized to drive the connecting rod to rotate, the cleaning block is rotated towards one side of the moving seat, the power motor drives the screw rod to rotate again, the connecting rod and the extrusion rod are driven to move downwards, the cleaning block can extend into the storage box, the extrusion rod is added with the pressing plate, the pressing plate drives the pressing plate to rotate, the pressing plate drives the pressing plate to extrude the air bag, soap water in the air bag is extruded into the storage box, the cleaning block can be wetted by the soap water, the power motor drives the screw rod to rotate, the connecting rod and the extrusion rod are driven to move upwards, the cleaning block is separated from the storage box, the rotating motor drives the connecting rod to rotate again, the cleaning block can face the pipeline to be detected, the power motor drives the screw rod to rotate again, the cleaning block is extruded on the outer side wall of the pipeline to be detected, the driving motor drives the rotating arc toothed plate to rotate, the cleaning block can not only clean the pipeline to be detected, but also can coat the soap water on the outer side wall of the pipeline to be detected in advance, and the efficiency of soap water film forming can also be improved;

the pressing plate is extruded by the extruding rod, so that the soapy water in the air bag is extruded into the storage box, and the pollution of the excessive soapy water by the dirty cleaning blocks can be reduced.

In a specific implementation scheme, a turntable motor is arranged on the moving seat, a motor shaft of the turntable motor is arranged along the radial direction of the pipeline to be detected, a rotating disc is coaxially arranged on the motor shaft of the turntable motor, the storage box, the fixed box and the infusion water pump are all arranged on the rotating disc, a cleaning box for inserting the cleaning block is arranged on the rotating disc, and the cleaning box is used for storing cleaning liquid;

the cleaning box is provided with a cleaning motor, a motor shaft of the cleaning motor is coaxially provided with a power rod, one end, far away from the cleaning motor, of the power rod is inserted into the cleaning box, one end, inserted into the cleaning box, of the power rod is provided with a plurality of beating plates used for beating the cleaning blocks, and the beating plates are uniformly distributed along the circumferential direction of the power rod.

Through adopting above-mentioned technical scheme, after being infected with too much dust and impurity on the clearance piece, carousel motor drive rolling disc rotates, thereby can rotate the clearance piece below with wasing the box, power motor drive lead screw rotates, drive connecting rod and clearance piece move down, the clearance piece moves to in wasing the box, it rotates to wash motor drive power rod, it rotates to drive the clapper, the clapper pats the clearance piece, in shaking off the clearance liquid with impurity and the dust on the clearance piece, thereby the clearance piece can last effectually to waiting to detect clearance between the pipeline.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pipeline to be detected is inflated, soap water is coated on the outer side wall of the pipeline, if leakage points exist, the soap water can bubble, maintenance is needed at the moment, and if the leakage points do not exist, the pipeline to be detected meets the requirements, so that the air tightness of the pipeline can be conveniently and quickly detected, and the possibility of leakage when a pipeline system is used is reduced;

2. when soapy water is coated on the outer side wall of the pipeline to be detected, the outer side wall of the pipeline to be detected is cleaned by the cleaning assembly, and then water is sprayed onto the outer side wall of the pipeline to be detected by the spraying assembly, so that a soapy water film can be formed, and the air tightness of the pipeline to be detected can be detected;

3. after being infected with too much dust and impurity on the clearance piece, carousel motor drive rolling disc rotates, thereby can rotate the clearance piece below with wasing the box, power motor drive lead screw rotates, drive connecting rod and clearance piece move down, the clearance piece removes in wasing the box, it rotates to wash motor drive power rod, it rotates to drive the clapper, the clapper is patted the clearance piece, with impurity and dust vibration on the clearance piece come off to the cleaning solution, thereby the clearance piece can last effectual to waiting to detect the clearance between the pipeline.

Drawings

Fig. 1 is a schematic structural view of a coating apparatus in an embodiment of the present application.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic structural view of a water tank and an air bag embodying the embodiment of the present application.

Fig. 4 is a schematic structural view of a spray assembly embodying embodiments of the present application.

FIG. 5 is a schematic diagram of a riser and a junction box embodying embodiments of the present application.

Fig. 6 is a schematic structural diagram of the upper water box and the lower water box in the embodiment of the application.

Description of reference numerals: 1. a pipeline to be detected; 2. a movable seat; 20. a water tank; 21. a transfusion water pump; 22. a liquid delivery pipe; 23. a delivery water pump; 24. a water delivery pipe; 25. a hose; 26. a riser; 27. a receiving box; 28. a through groove; 3. a drive member; 30. a push motor; 31. a push gear; 32. a rotating shaft; 33. a roller; 34. driving the gear; 4. cleaning the assembly; 40. a support; 41. mounting a plate; 42. mounting a connecting plate; 43. sliding a notch; 44. rotating the arc toothed plate; 45. the arc toothed plate is linked; 46. a connecting plate; 47. a fixing sheet; 48. moving the hole; 49. a drive motor; 400. a drive gear; 401. cleaning the workpiece; 402. a rotating frame; 403. a fixed block; 404. connecting blocks; 405. a power motor; 406. a lead screw; 407. a slider; 408. a chute; 409. an extrusion stem; 410. rotating the motor; 411. a connecting rod; 412. cleaning the block; 413. a turntable motor; 414. rotating the disc; 415. a storage box; 416. a fixing box; 417. cleaning the box; 418. an air bag; 419. a transfusion tube; 420. a connecting pipe; 421. a one-way valve; 422. opening the mouth; 423. a fixed mount; 424. a hinged lever; 425. pressing a plate; 426. a torsion spring; 427. pressing into blocks; 428. an opening; 430. a power rod; 431. beating a plate; 432. cleaning the motor; 5. a spray assembly; 50. erecting a frame; 51. a vertical plate; 52. a fixing plate; 53. penetrating through the notch; 54. a transverse plate; 55. a driving cylinder; 56. a driving rack; 57. an arc-shaped toothed ring; 58. a link ring plate; 59. connecting sheets; 500. a through hole; 501. a sliding groove; 502. moving the plate; 503. sliding the column; 504. a spray head; 505. a waist-shaped groove; 506. a water supply hose; 507. the water pipe is communicated; 508. a water feeding box; 509. a water discharging box; 510. a communication pipe is provided.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses an airtight detection method for a pipeline system of a liquefied gas filling station.

A method for detecting the air tightness of a pipeline system of a liquefied gas filling station comprises the following specific steps:

s1, cleaning an inner pipeline: introducing steam into the pipeline to be detected for purging, wherein the flow velocity of the steam is not lower than 30m/s, and the cleanness of the interior of the pipeline 1 to be detected is ensured to meet the requirement;

s2, installing a detection device: installing a blind plate at one end of a pipeline 1 to be detected, installing a plugging plate at the other end of the pipeline 1 to be detected through a bolt and a flange connection of the pipeline 1 to be detected, installing the plugging plate at the other end of the pipeline, installing the charging connector on the plugging plate through the bolt and the flange connection of the pipeline 1 to be detected, and coating soapy water on the outer side wall of the pipeline 1 to be detected by adopting a coating device;

s3, detection is carried out: inflating the inflating nozzle by using an air compressor, stopping ventilation when the gas pressure in the pipeline reaches 3000pa, keeping the gas in the pipeline to be detected for 15-12 minutes, in the embodiment, keeping the time for 10 minutes, checking whether a leakage point exists in the pipeline 1 to be detected, and marking if the leakage point exists;

s4, disassembling the detection device: and after the inspection is finished, exhausting gas, disassembling the blind plate and the plugging plate, maintaining the mark points, and finishing the detection.

Utilize soapy water coating to wait to detect on the pipeline 1 lateral wall to wait to detect pipeline 1 and aerify, wait to detect when pipeline 1 has the gas leakage condition, wait to detect pipeline 1 lateral wall then take place the tympanic bulla, need mark and maintain waiting to detect pipeline 1 this moment, with this can realize waiting the detection of detecting pipeline 1 gas tightness, be favorable to reducing the possibility that the later stage takes place to leak when using the pipeline.

Referring to fig. 1, the coating device is including removing seat 2, removes to be equipped with on the seat 2 to be used for the drive to remove seat 2 along waiting to detect driving piece 3 that detects 1 axial displacement of pipeline, removes to be equipped with on the seat 2 to be used for waiting to detect that the clearance subassembly 4 that pipeline 1 lateral wall carries out the clearance is carried out, removes to be equipped with on the seat 2 to be used for waiting to detect the spraying subassembly 5 that coats fertile water on the pipeline 1 lateral wall.

The driving part 3 comprises a pushing motor 30 arranged on the moving seat 2, a pushing gear 31 is coaxially arranged on a motor shaft of the pushing motor 30, two rotating shafts 32 are rotatably arranged on the moving seat 2, the two rotating shafts 32 are uniformly distributed along the axial direction of the pipeline 1 to be detected, the axis of each rotating shaft 32 is perpendicular to the axis of the pipeline 1 to be detected, two ends of each rotating shaft 32 are respectively provided with a roller 33 which is in contact with the ground, one rotating shaft 32 is coaxially provided with a driving gear 34, and the driving gear 34 is meshed with the pushing gear 31;

clearance subassembly 4 is including setting up the support 40 on removing seat 2, be equipped with mounting panel 41 on support 40, it has installation even board 42 to articulate on the mounting panel 41, installation even board 42 and mounting panel 41 set up relatively from top to bottom, all be equipped with the slip breach 43 that supplies to detect pipeline 1 and pass on the installation even board 42 and the mounting panel 41 relative lateral wall, one side that installation even board 42 and mounting panel 41 kept away from the pin joint all is equipped with connecting plate 46, pass through bolted connection between two connecting plates 46, it is equipped with rotation arc pinion rack 44 to rotate on the mounting panel 41, it is equipped with linkage arc pinion rack 45 to rotate on the installation even board 42, it is equipped with two stationary sheets 47 to rotate between arc pinion rack 44 and the linkage arc pinion 45, stationary sheet 47 is located the one side setting that rotation arc pinion rack 44 kept away from mounting panel 41, two stationary sheets 47 set up relatively, be equipped with two bolts on the stationary sheet 47, one of them bolt passes stationary sheet 47 and rotation arc pinion rack 44 threaded connection, another bolt passes stationary sheet 47 and linkage arc pinion 45 threaded connection, the inside wall of rotation arc pinion 44 and the movable hole 48 that supplies to detect pipeline 1 to pass is equipped with the constitution of installation even board 42, installation even board 42 is equipped with coaxial arc pinion 49 and the meshing motor 400 that drives arc pinion rack 49 and coaxial arc pinion 400.

The rotating arc toothed plate 44 is provided with a cleaning piece 401 for cleaning the outer side wall of the pipeline 1 to be detected.

Referring to fig. 2, the cleaning member 401 includes a rotating frame 402 disposed on the side wall of the rotating arc toothed plate 44, the rotating frame 402 includes two fixing blocks 403 disposed on the rotating arc toothed plate 44, a connecting block 404 is disposed between the two fixing blocks 403, the two fixing blocks 403 and the connecting block 404 are integrally formed and are shaped like a Chinese character '\21274', a power motor 405 is disposed on the rotating frame 402, a lead screw 406 is coaxially and fixedly disposed on a motor shaft of the power motor 405, the lead screw 406 is disposed along the radial direction of the pipe 1 to be detected, a sliding block 407 is connected to the lead screw 406 in a threaded manner, a sliding groove 408 for sliding the sliding block 407 is disposed on the connecting block 404, the sliding groove 408 is disposed along the radial direction of the pipe 1 to be detected, a pressing rod 409 is disposed on one side of the sliding block 407 extending out of the sliding groove 408, and the pressing rod 409 is disposed along the radial direction of the pipe 1 to be detected.

One end of the sliding block 407 far away from the screw 406 is provided with a rotating motor 410, a motor shaft of the rotating motor 410 is coaxially provided with a connecting rod 411, the connecting rod 411 is located on one side of the extrusion rod 409 far away from the screw 406, the connecting rod 411 is arranged along the radial direction of the pipeline 1 to be detected, a cleaning block 412 used for absorbing soapy water is arranged on the end wall of the connecting block 404, and the cleaning block 412 can be a sponge block or a rag.

Referring to fig. 2 and 3, a turntable motor 413 is arranged on the movable base 2, a motor shaft of the turntable motor 413 is arranged along the radial direction of the pipeline 1 to be detected, a rotating disc 414 is coaxially arranged on the motor shaft of the turntable motor 413, the rotating disc 414 is horizontally arranged, a storage box 415, a fixed box 416 and a cleaning box 417 are respectively arranged on the rotating disc 414, the fixed box 416 is positioned between the storage box 415 and the cleaning box 417, an air bag 418 for storing soapy water is arranged in the fixed box 416, the outer side wall of the air bag 418 is arranged in contact with the inner side wall of the fixed box 416, an infusion tube 419 and a connecting tube 420 are respectively arranged on the air bag 418, and a one-way valve 421 is respectively arranged on the connecting tube 420 and the infusion tube 419.

Referring to fig. 2 and 3, a water tank 20 for storing soapy water is arranged in the movable seat 2, an infusion water pump 21 is arranged on the top wall of the movable seat 2, a water inlet of the infusion water pump 21 is connected with the water tank 20 through a liquid feeding pipe 22, and one end of an infusion pipe 419 far away from the air bag 418 is connected with a water outlet of the infusion water pump 21.

Be equipped with on the roof of case 415 and supply clearance piece 412 and connecting rod 411 male uncovered 422, connecting pipe 420 is kept away from the one end of gasbag 418 and is inserted uncovered 422, be equipped with mount 423 on the roof of removal seat 2, be equipped with articulated rod 424 on the mount 423, it is equipped with the extruded clamp plate 425 of confession extrusion pole 409 to rotate on the articulated rod 424, be equipped with torsional spring 426 on the articulated rod 424, the one end and the articulated rod 424 of torsional spring 426 are connected, the torsional spring 426 other end and clamp plate 425 are connected, the one end that articulated rod 424 was kept away from to clamp plate 425 is equipped with briquetting 427, be equipped with on the roof of case 416 and supply briquetting 427 to insert and extrude the opening 428 of gasbag 418.

The cleaning box 417 is used for storing cleaning liquid for cleaning the cleaning block 412, a cleaning motor 432 is arranged on the outer side wall of the cleaning box 417, a power rod 430 is coaxially arranged on a motor shaft of the cleaning motor 432, one end, far away from the cleaning motor 432, of the power rod 430 is inserted into the cleaning box 417, a plurality of beating plates 431 used for beating the cleaning block 412 are arranged at one end, inserted into the cleaning box 417, of the power rod 430, and the plurality of beating plates 431 are arranged along the circumferential direction of the power rod 430.

When soapy water is applied, the power motor 405 is used for driving the lead screw 406 to rotate, so that the sliding block 407 can be driven to slide along the sliding groove 408, the extrusion rod 409 and the connecting rod 411 can be driven to move downwards, the connecting rod 411 drives the cleaning block 412 to move downwards, the cleaning block 412 is inserted into the storage box 415, the extrusion rod 409 simultaneously extrudes the pressing plate 425, the pressing plate 425 drives the pressing block 427 to rotate, the pressing block 427 is inserted into the opening 428 to extrude the air bag 418, the soapy water in the air bag 418 is conveyed into the storage box 415 from the connecting pipe 420, the cleaning block 412 absorbs the soapy water, the power motor 405 drives the lead screw 406 to rotate reversely, the extrusion rod 409 and the connecting rod 411 are driven to move upwards, the cleaning block 412 is separated from the storage box 415, the rotating motor 410 drives the connecting rod 411 and the cleaning block 412 to rotate, the cleaning block 412 can face the pipeline 1 to be detected, the lead screw 406 is driven to rotate by the power motor 405, the sliding block 407, the connecting rod 411 and the cleaning block 412 are driven to move upwards, the cleaning block 412 is extruded on the pipeline 1 to be detected, the driving motor 49 drives the toothed plate 44 to rotate, the arc 44 and the cleaning block 412 to rotate around the outer side wall of the cleaning gear, and the outer wall of the pipeline 1 to reduce the impurities on the pipeline 1 to be detected, and the outer wall of the pipeline 1, and the impurities on the pipeline, and the pipeline 1 to be detected;

and the cleaning block 412 coats soapy water on the pipeline 1 to be detected while cleaning, so that the film forming efficiency can be improved.

After the cleaning block 412 is cleaned for a long time, a large amount of dirt can be accumulated on the cleaning block 412, at the moment, the turntable motor 413 drives the rotating disc 414 to rotate, so that the cleaning box 417 can be rotated below the cleaning block 412, firstly, the power motor 405 drives the screw rod 406 to rotate, the slider 407 and the connecting rod 411 are driven to move downwards, the cleaning block 412 is separated from the pipeline 1 to be cleaned, the rotating motor 410 drives the connecting rod 411 to rotate, so that the cleaning block 412 can rotate towards one side of the storage box 415, the power motor 405 drives the screw rod 406 to rotate, the slider 407 and the connecting rod 411 are continuously driven to move downwards, so that the connecting rod 411 and the cleaning block 412 can be inserted into the cleaning box 417, the cleaning block 412 is inserted into the cleaning liquid, the cleaning motor 432 is started, the cleaning motor 432 drives the power rod 430 to rotate, so that the clapper 431 is driven to rotate, the clapper 431 is used for cleaning the clapper 431 for cleaning the cleaning block 412, so that the dirt on the cleaning block 412 can be removed, and the pipeline 1 to be cleaned can be cleaned continuously.

Referring to fig. 4 and 5, spraying assembly 5 is including setting up grudging post 50 on removing seat 2, be equipped with riser 51 on the grudging post 50, it has fixed plate 52 to articulate on riser 51, fixed plate 52 and riser 51 set up relatively from top to bottom, all be equipped with the confession on the relative lateral wall of fixed plate 52 and riser 51 and wait to detect the breach 53 that runs through that pipeline 1 passed, one side that fixed plate 52 and riser 51 keep away from the pin joint all is equipped with horizontal plate 54, two horizontal plates 54 pass through bolted connection, be equipped with on riser 51 and drive actuating cylinder 55, the axis that drives actuating cylinder 55 is perpendicular with the axis that waits to detect pipeline 1, it drives actuating rack 56 to be equipped with on the end wall of actuating cylinder 55 piston rod, it slides with riser 51 to drive actuating rack 56, in this embodiment, also be equipped with on the fixed plate 52 and drive actuating cylinder 55 equally, it drives actuating rack 56 to drive to be equipped with on the end wall of actuating cylinder 55 piston rod.

The vertical plate 51 is provided with an arc-shaped toothed ring 57 meshed with the driving rack 56 in a rotating manner, the fixed plate 52 is provided with a linkage ring plate 58 in a rotating manner, the linkage ring plate 58 and the arc-shaped toothed ring 57 are arranged oppositely from top to bottom, two connecting pieces 59 are arranged between the linkage ring plate 58 and the arc-shaped toothed ring 57, the two connecting pieces 59 are arranged oppositely, bolts are arranged at two ends of each connecting piece 59, one bolt penetrates through the connecting piece 59 and is in threaded connection with the linkage ring plate 58, the other bolt penetrates through the connecting piece 59 and is in threaded connection with the arc-shaped toothed ring 57, and the inner side wall of the linkage ring plate 58 and the inner side wall of the arc-shaped toothed ring 57 are combined to form a through hole 500 through which the pipeline 1 to be detected can pass.

A plurality of sliding grooves 501 are formed in one sides, close to the arc-shaped toothed ring 57, of the vertical plate 51 and the fixed plate 52, the sliding grooves 501 are uniformly distributed along the circumferential direction of the through hole 500, the sliding grooves 501 are arranged along the radial direction of the through hole 500, one side of each sliding groove 501 is closed, the other side of each sliding groove 501 is communicated with the corresponding through notch 53, a moving plate 502 is arranged in each sliding groove 501 in a sliding manner, a sliding column 503 sliding in the kidney-shaped groove 505 is arranged on each moving plate 502, and a spray head 504 is arranged on one side, far away from the corresponding sliding column 503, of each moving plate 502;

the side walls of the arc-shaped toothed ring 57 and the linkage ring plate 58 are respectively provided with a waist-shaped groove 505 for the sliding column 503 to slide, the waist-shaped grooves 505 are uniformly distributed along the circumferential direction of the through hole 500, the arc-shaped toothed ring 57 and the waist-shaped grooves 505 on the linkage ring plate 58 are used for driving the moving plate 502 to extend out of the sliding groove 501 or retract into the sliding groove 501, in the implementation, the direction of the driving rack 56 driving the moving plate 502 to extend out of the sliding groove 501 is the forward direction, and the distance between the central axis of the length direction of the waist-shaped groove 505 and the center of the through hole 500 is gradually reduced along the forward direction of the arc-shaped toothed ring 57.

Referring to fig. 3 and 4, the movable base 2 is provided with a delivery water pump 23, a delivery pipe 24 is provided between the water tank 20 and the delivery water pump 23, and a hose 25 is provided between the delivery water pump 23 and the spray head 504.

Referring to fig. 5 and 6, the hose 25 includes a water supply hose 506 connected to the spray head 504 and a water communication pipe 507 connected to the water outlet of the water pump 23, a water supply box 508 is disposed on one side of the fixing plate 52 away from the mounting connecting plate 42, one end of the water supply hose 506 of the spray head 504 on the fixing plate 52 away from the spray head 504 is communicated with the water supply box 508, a water discharge box 509 is disposed on one side of the upright plate 51 away from the mounting connecting plate 42, one end of the water supply hose 506 of the spray head 504 on the upright plate 51 away from the spray head 504 is communicated with the water discharge box 509, the water supply box 508 and the water discharge box 509 are disposed opposite to each other, and the water supply box 508 and the water discharge box 509 are connected through a communication pipe 510.

Firstly, a vertical plate 51 is sleeved below a pipeline 1 to be detected, a fixing plate 52 is rotated, the fixing plate 52 and the vertical plate 51 are abutted, bolts penetrate through two connecting plates 46 to lock the fixing plate 52 and the vertical plate 51, a connecting piece 59 is attached to an arc-shaped toothed ring 57 and a linkage ring plate 58, the connecting piece 59 is fixed on the arc-shaped toothed ring 57 and the linkage ring plate 58 through bolts, a driving air cylinder 55 is started, the driving air cylinder 55 drives a driving rack 56 to move, the driving rack 56 drives the arc-shaped toothed ring 57 to rotate, a waist-shaped groove 505 drives a sliding column 503 to slide in a sliding groove 501, and the moving plate 502 is driven to extend out of or retract into the sliding groove 501, so that the position of a spray head 504 can be adjusted, the spray head can adapt to the pipelines 1 to be detected with different pipe diameters, and the application range of the coating device is enlarged.

Reuse delivery pump 23 carries the soapy water in the water tank 20 during the UNICOM water pipe 507 along raceway 24, carry down in the water box 509 again, water in the water box 509 is carried last water box 508 along communicating pipe 510, carry water supply hose 506 afterwards, shower nozzle 504 sprays soapy water again to waiting to detect on the pipeline 1 lateral wall, can accomplish the soapy water coating and wait to detect on the pipeline 1 lateral wall, with this mode that can replace the manual coating of workman, alleviate workman work burden, improve work efficiency.

Referring to fig. 4 and 5, a vertical pipe 26 is arranged on the movable base 2 and between the vertical frame 50 and the bracket 40, one end of the vertical pipe 26 penetrates into the movable base 2 to be communicated with the water tank 20, a receiving box 27 is arranged at the other end of the vertical pipe 26, the receiving box 27 is open, through grooves 28 for the pipelines 1 to be detected to pass through are formed in the opposite side walls of the receiving box 27, and the through grooves 28 are communicated with the top wall of the receiving box 27; because shower nozzle 504 sprays fertile soap water to waiting to detect on the pipeline 1 lateral wall, unnecessary fertile soap water can drop on removing the seat 2, utilizes to accept box 27 in time to fertile soap water and accepts, fertile soap water in and in time getting back to water tank 20 along riser 26 to this fertile soap water of recycle is favorable to reducing the waste of fertile soap water.

The implementation principle of the pipeline system airtightness detection method for the liquefied gas filling station in the embodiment of the application is as follows: aerify earlier to waiting to detect in the pipeline 1 to coating soapy water on the pipeline lateral wall, if waiting to detect pipeline 1 and having the leak point, the bubbling can take place for soapy water, to waiting to detect pipeline 1 and carry out the mark this moment, detect and finish the back and carry out the maintenance, if there is not the leak point, then wait to detect pipeline 1 and accord with the requirement, with this gas tightness of detection pipeline that can convenient and fast, reduce the possibility that takes place to leak when using pipe-line system.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (4)

1. The method for detecting the air tightness of the pipeline system of the liquefied gas filling station is characterized by comprising the following steps of: the method comprises the following specific steps:

installing a detection device: a blind plate is installed at one end of the pipeline (1) to be detected, a plugging plate is installed at the other end of the pipeline, and soapy water is coated on the outer side wall of the pipeline (1) to be detected;

and (3) detection: inflating the pressure test pipeline through an inflating nozzle on the plugging plate, keeping the gas in the pipeline (1) to be detected for at least five minutes, and checking whether the pipeline (1) to be detected has a leakage point;

disassembling the detection device: after the inspection is finished, exhausting gas, and disassembling the blind plate and the plugging plate;

in the step of installing the detection device, a coating device is adopted to coat soapy water on the pipeline (1) to be detected;

the coating device comprises a moving seat (2), a driving piece (3) used for driving the moving seat (2) to move axially along a pipeline (1) to be detected is arranged on the moving seat (2), a cleaning assembly (4) used for cleaning the outer side wall of the pipeline (1) to be detected is arranged on the moving seat (2), and a spraying assembly (5) used for coating soapy water on the outer side wall of the pipeline (1) to be detected is arranged on the moving seat (2);

the cleaning assembly (4) comprises a support (40) arranged on the moving seat (2), a rotating arc toothed plate (44) is arranged on the support (40) in a rotating mode, a linkage arc toothed plate (45) is arranged on the support (40) in a rotating mode, the rotating arc toothed plate (44) is connected with the linkage arc toothed plate (45) through bolts, a moving hole (48) for the to-be-detected pipeline (1) to penetrate through is formed by the inner side wall of the rotating arc toothed plate (44) and the inner side wall of the linkage arc toothed plate (45), a driving motor (49) is arranged on the support (40), and a driving gear (400) meshed with the rotating arc toothed plate (44) and the linkage arc toothed plate (45) is coaxially arranged on the driving motor (49);

the rotating arc toothed plate (44) is provided with a cleaning piece (401) for cleaning the outer side wall of the pipeline (1) to be detected;

the cleaning piece (401) comprises a connecting rod (411) arranged on the side wall of the rotating arc toothed plate (44), the connecting rod (411) is arranged along the radial direction of the pipeline (1) to be detected, and a cleaning block (412) used for cleaning the outer side wall of the pipeline (1) to be detected is arranged on the end wall of the connecting rod (411);

be equipped with rotating turret (402) on rotating arc pinion rack (44) lateral wall, be equipped with motor power (405) on rotating turret (402), the motor shaft coaxial of motor power (405) is equipped with lead screw (406), be equipped with slider (407) on lead screw (406), be equipped with the confession on rotating turret (402) spout (408) that slider (407) slided, spout (408) are along rotating the radial setting of arc pinion rack (44), connecting rod (411) with slider (407) are kept away from one side of spout (408) is connected.

2. The method for detecting the airtightness of the piping system in the liquefied gas filling station according to claim 1, wherein: the spraying assembly (5) comprises a vertical frame (50) arranged on the moving seat (2), a vertical plate (51) is arranged on the vertical frame (50), a driving cylinder (55) is arranged on the vertical plate (51), a driving rack (56) is arranged on the end wall of a piston rod of the driving cylinder (55), the axis of the driving cylinder (55) is vertical to the axis of the pipeline (1) to be detected, and an arc-shaped toothed ring (57) meshed with the driving rack (56) is rotatably arranged on the vertical plate (51);

a fixing plate (52) is hinged to one side, far away from the moving seat (2), of the vertical plate (51), through notches (53) are formed in the fixing plate (52) and the vertical plate (51), the two through notches (53) are oppositely arranged and used for the pipeline (1) to be detected to pass through, one side of the fixing plate (52) is hinged to the vertical plate (51), the other side of the fixing plate (52) is detachably connected with the vertical plate (51) through bolts, a linkage ring plate (58) is rotatably arranged on the fixing plate (52), and the inner side wall of the linkage ring plate (58) and the inner side wall of the arc-shaped toothed ring (57) are combined to form a through hole (500) for the pipeline (1) to be detected to pass through;

a plurality of sliding grooves (501) are formed in the vertical plate (51) and the fixed plate (52) along the radial direction of the through hole (500), the sliding grooves (501) are uniformly distributed along the circumferential direction of the through hole (500), one side of each sliding groove (501) is closed, the other side of each sliding groove (501) is communicated with the through notch (53), a moving plate (502) is arranged in each sliding groove (501) in a sliding manner, a sliding column (503) is arranged on each moving plate (502), and a spray head (504) is arranged on one side, far away from the sliding column (503), of each moving plate (502);

waist-shaped grooves (505) for the sliding columns (503) to slide are formed in the side walls of the arc-shaped gear ring (57) and the linkage ring plate (58), and the waist-shaped grooves (505) are used for driving the moving plate (502) to extend out of the sliding grooves (501) or retract into the sliding grooves (501);

remove and be equipped with water tank (20) of depositing fertile water in the seat (2), be equipped with conveying water pump (23) on removing seat (2), water tank (20) with be equipped with raceway (24) between conveying water pump (23), be equipped with hose (25) between conveying water pump (23) and shower nozzle (504).

3. A liquefied gas filling station pipeline system airtightness detection method according to claim 2, wherein: a rotating motor (410) is arranged at one end, away from the lead screw (406), of the sliding block (407), a connecting rod (411) is coaxially arranged on a motor shaft of the rotating motor (410), the connecting rod (411) is arranged along the radial direction of the pipeline (1) to be detected, a cleaning block (412) is arranged on the end wall of the connecting rod (411), and an extrusion rod (409) is arranged on the sliding block (407) and positioned between the connecting rod (411) and the lead screw (406);

a fixed box (416) and an infusion water pump (21) are respectively arranged on the movable seat (2), an air bag (418) used for storing soapy water is arranged in the fixed box (416), an infusion tube (419) is arranged between the air bag (418) and the infusion water pump (21), a liquid feeding tube (22) is arranged between the infusion water pump (21) and the water tank (20), a connecting tube (420) used for conveying the soapy water is arranged on the air bag (418), and check valves (421) are respectively arranged on the connecting tube (420) and the infusion tube (419);

move and be equipped with on seat (2) and supply storage box (415) that connecting rod (411) and clearance piece (412) stretch into, the one end that gasbag (418) were kept away from in connecting pipe (420) stretches into storage box (415), it has the extruded clamp plate (425) of confession pinch bar (409) to articulate on seat (2) to move, be equipped with mount (423) on the roof of seat (2) to move, be equipped with articulated rod (424) on mount (423), be equipped with torsional spring (426) on articulated rod (424), the one end and the articulated rod (424) of torsional spring (426) are connected, torsional spring (426) other end and clamp plate (425) are connected, the one end that storage box (415) was kept away from in clamp plate (425) is equipped with briquetting (427) that are used for extrudeing gasbag (418).

4. The method for detecting the airtightness of the piping system in the liquefied gas filling station according to claim 3, wherein: a turntable motor (413) is arranged on the moving seat (2), a motor shaft of the turntable motor (413) is arranged along the radial direction of the pipeline (1) to be detected, a rotating disc (414) is coaxially arranged on the motor shaft of the turntable motor (413), the storage box (415), the fixed box (416) and the infusion water pump (21) are all arranged on the rotating disc (414), a cleaning box (417) for inserting the cleaning block (412) is arranged on the rotating disc (414), and the cleaning box (417) is used for storing cleaning liquid;

the cleaning device is characterized in that a cleaning motor (432) is arranged on the cleaning box (417), a power rod (430) is coaxially arranged on a motor shaft of the cleaning motor (432), one end, far away from the cleaning motor (432), of the power rod (430) is inserted into the cleaning box (417), a plurality of beating plates (431) used for beating the cleaning block (412) are arranged at one end, inserted into the cleaning box (417), of the power rod (430), and the beating plates (431) are uniformly distributed along the circumferential direction of the power rod (430).

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