CN117232745A - Scanning leak detection device - Google Patents
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- CN117232745A CN117232745A CN202310968365.2A CN202310968365A CN117232745A CN 117232745 A CN117232745 A CN 117232745A CN 202310968365 A CN202310968365 A CN 202310968365A CN 117232745 A CN117232745 A CN 117232745A
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- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 118
- 239000005871 repellent Substances 0.000 claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 239000002390 adhesive tape Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Abstract
The application relates to the technical field of detection devices, and discloses a scanning leakage detection device which comprises a plurality of test assemblies with the same structure, wherein each test assembly comprises a positioning frame, a gas-repellent module is arranged on the back surface of each positioning frame, a leaning frame and a sealing cover are connected to the gas-repellent module, the sealing cover is positioned on the inner side of the leaning frame, the gas-repellent module is communicated with an external air pump, an air guide channel is arranged in the gas-repellent module, the air guide channel guides air to act on the leaning frame and charge the sealing cover, the leaning frame butts against a tight sealing cover, and an air gauge is arranged in the sealing cover.
Description
Technical Field
The application relates to the technical field of airtight door detection, in particular to a scanning leakage detection device.
Background
The inflatable airtight door is mainly applied to places with high requirements on sound insulation, heat insulation and air tightness, such as hospitals, food factories, engineering and the like. Through setting up the sealing rubber strip that aerifing between door frame and door plant, when the door was opened, the sealing rubber strip that aerifing was leaked out gas and is contracted in the recess, and when the door was closed, the sealing rubber strip that aerifing was inflated to closely laminate on door plant and door frame, then form the strict seal between door plant and door frame, in order to reach airtight effect.
The sealing effect of the inflatable sealing door directly influences the safety of the use scene, and the limit of the use leakage quantity of the inflatable sealing door is not available at present, and the controllable selection of a mature scheme and equipment is not available, but the detection thought of the air tightness is basically consistent: after the door body is connected with the sealing cavity, the pressure imbalance inside and outside the sealing cavity of the door body is taken as an initial state, leakage is carried out for a certain time, and the gas parameters in the sealing cavity are changed. And calculating the relative loss of the gas mass in the closed cavity according to the gas state equation, and further calculating the sealing effect of the sealing door.
Among the above, the detection method for detecting the sealing effect of the airtight door has many limitations in use.
Because the sealing door is used at present, the sealing door gradually tends to be customized, the produced sealing door has great difference in specification and model, so that a plurality of different models are required to be correspondingly arranged for matched detection of the sealing container, or the door frame installation position of the sealing container is correspondingly modified according to the model of the sealing door, and the detection scheme is heavy and complicated;
in-service detection after the airtight door is put into service, namely, a room provided with the airtight door is used as a container, gas with certain pressure (the pressure difference between the inside and the outside can be formed by vacuumizing) is filled, and the air tightness of the airtight door is calculated according to the pressure change between the rooms in a certain time.
The detection thought of the conventionally produced airtight door is consistent with that of the prior airtight door, so that the detection cost and the customization cost are difficult to reduce.
Disclosure of Invention
Aiming at the defects of the prior art, the application provides a scanning leak detection device which has the advantage of detecting the sealing effect of an airtight door without arranging an independent sealing container, and solves the problems of high detection cost and customization cost caused by the traditional detection thought of the airtight door.
In order to achieve the above purpose, the present application provides the following technical solutions: the scanning leak detection device comprises a plurality of test assemblies with the same structure, wherein each test assembly comprises a positioning frame, a gas-repellent module is arranged on the back surface of each positioning frame, an abutting frame and a sealing cover are connected to the gas-repellent module, and the sealing cover is positioned on the inner side of the abutting frame;
the air-evacuation module is communicated with the external air pump, an air guide channel is arranged in the air-evacuation module, the air guide channel guides air to act on the leaning support and to be filled into the sealing cover, the leaning support is tightly sealed, and an air pressure gauge is arranged in the sealing cover. The inflatable sealing door mainly comprises a part which is likely to leak air, namely a door seam part, the device is used for limiting the position of the door seam in a targeted manner, a sealing space is formed at a local position after the door seam is wrapped, the effect of scanning and detecting the tightness of the air sealing door is achieved through monitoring the air pressure in the local sealing space, and due to the fact that the sealing space formed at the local position is provided with a plurality of identical devices, the door seam can be completely covered, the door seam can be completely prevented from being influenced by the shape of a door plate, the door seam can be arranged along the position of the door seam, so that the air tightness of the whole air sealing door during closing is completely detected, the device is detected without independently arranging a sealing container, and meanwhile, the fact that the sealing container with different sizes is needed due to the difference of the shape of the door plate is avoided.
Preferably, the inside cavity of the gas-repellent module, the cavity is provided with and leads the balloon core, the place ahead of gas-repellent module has seted up the air inlet, and the air inlet is directly UNICOM with the bottom of leading the balloon core, lead the balloon core and play the effect of air guide and non-return in the gas-repellent module, utilize built-in balloon core that leads, carry out the reposition of redundant personnel to the gas that fills in the module and guide, a high-pressure space that forms therein utilizes wherein high pressure, and the suppression is supported and is leaned on the frame and act on the sealed cowling, makes the high-pressure environment in the sealed cowling, improves the material for the crack detection.
Preferably, a cavity is respectively formed in two sides of the air-repellent module, an air hole is formed in the bottom of the air-repellent module, two guide rods are arranged on the propping frame and are respectively inserted into the two cavities, the sealing cover is communicated with the air holes, the cavities formed in two sides are filled with high-pressure air after being guided by the guide ball core, the guide rods are acted on the sealing cover so that the propping frame moves downwards to act on the lower part, and the other part of air is guided to the air hole through the guide ball core and is filled into the sealing cover to detect the air tightness of the door gap.
Preferably, the two symmetrical sides of the balloon core are respectively provided with a second airtight plate and an air-repellent module for fixed connection, two ends of the second airtight plates are respectively vertically provided with a first airtight plate, the first airtight plates extend to the inner top end of the air-repellent module, the top end of the balloon core is provided with a ring cover, the ring cover is in butt joint with the inner top end of the air-repellent module, and the ring cover is in a connection state with the first airtight plates all around, a sealing space is formed between the second airtight plates and the first airtight plates connected with the second airtight plates and the air-repellent module, and the sealing spaces at two sides are not communicated with other areas in the air-repellent module.
Preferably, the second airtight plate is located the homonymy with the cavity, first opening and the intercommunication of dredging the gas module have been seted up on the top of cavity, leading gas port has respectively been seted up to the both sides of leading the balloon core corresponding second airtight plate, leading gas port and signed sealed space intercommunication, sealed space simultaneously through first opening and the cavity intercommunication of both sides, the gas of filling leading the balloon core promptly can pour into in the cavity of both sides through the first opening of both sides to act on the guide bar, make support to sink to act on the sealed cover against the frame.
Preferably, the inside of the balloon core is provided with a check ball, the check ball is seated at the communication port between the balloon core and the air inlet, the check ball is connected with a guide post, the tail end of the guide post is connected with a sealing plate, the top end of the balloon core is provided with a secondary air guide port communicated to the annular cover, the sealing plate can be clamped into the secondary air guide port and sealed, the gas in the balloon core is filled, the check ball and the sealing plate above the sealing plate are propped up, so that the gas filled in the gas can be respectively filled into the cavity and the sealing cover, and the gas pressure in the cavity is larger.
Preferably, a gap is formed on the front side and the rear side of the ring cover, the sealing cover is communicated into the air guide ball core through the air hole, the gap and the auxiliary air guide hole, and the opened auxiliary air guide hole is used for guiding air in the air guide ball core to pass through and is filled into the sealing cover from the air hole.
Preferably, the top of guide bar is piston structure, and its both sides outwards extend, be provided with spring coupling between the bottom of extension and cavity, when the guide bar receives the interior high pressure influence of cavity to sink, spring energy storage, when the device stop work, the spring resets, in pushing the cavity again completely with the guide bar, makes to lean on frame and locating rack laminating more, guarantees that the connection between them is more stable, makes things convenient for the later stage to continue to use.
Preferably, the sealing cover is provided with a connecting adhesive tape, the middle position of the connecting adhesive tape is provided with a corrugated pipe, the end part of the corrugated pipe is clamped into the air hole, two sides of the corrugated pipe are respectively extended with a limiting rod, the connecting adhesive tape is provided with a groove which is in butt joint with the limiting rods, when high pressure is filled in the cavity, the sealing cover is sunken against the frame and acts on the sealing cover, the sealing cover is pressed and sunken, the corrugated pipe is used for guaranteeing stable connection between the sealing cover and the air-repellent module, the provided groove and the limiting rods are convenient for the corrugated pipe to be connected with the air hole, when the sealing cover is not inflated, the end part of the corrugated pipe can be clamped into the air hole, in this way, each sealing cover can be replaced, when the device is required to be used in an arc-shaped door seam state, the sealing cover with an arc buckling column is installed in a replaceable mode, and the corrugated pipe is connected with the air-repellent module.
Preferably, the bottom of support leaning on the frame is provided with the flange, be provided with the hangers of butt joint with the flange on the sealed cowling, the bottom of sealed cowling is the shirt rim, and a knot post is respectively installed to the front and back side of shirt rim bottom, sealed cowling, knot post and shirt rim are the rubber material, when receiving cavity pressure sinking effect on the sealed cowling to support the frame, flange and hangers butt joint for the sealed cowling is stable to receive down force, and sealed cowling bottom shirt rim is thinner and expands outward, when the pressurized, and the shirt rim naturally collapses, and inside lining part laminating is on door plant and door frame, can stably guarantee that sealed cowling inside is in sealing state, and the knot post of establishing is then in the natural clip entrance to the crack, avoids the sealed space of formation, because the opening of crack position department for inside high-pressure air leakage.
Compared with the prior art, the application provides a scanning leak detection device, which has the following beneficial effects:
1. the inflatable sealing door mainly comprises a part which is likely to leak air, namely a door seam, the device is used for limiting the position of the door seam in a targeted manner, a sealing space is formed at a local position after the door seam is wrapped, the effect of scanning and detecting the tightness of the air sealing door is achieved through monitoring the air pressure in the local sealing space, and due to the fact that the sealing space formed at the local position is provided with a plurality of identical devices, the door seam can be completely covered without being influenced by the shape of a door plate, the device can be distributed along the position of the door seam so as to completely detect the air tightness of the whole air sealing door when the door is closed, the device does not need to be used for detecting a sealing container independently, and meanwhile, the sealing container with different sizes is avoided because of the different shapes of the door plate;
2. when the airtight door is in a problem, the device can be directly used for positioning the point of the problem of the airtight door so as to repair the point of the problem, so that the problem point is difficult to directly position after the problem occurs in the traditional detection thought, and the whole door plate and the door frame are required to be inspected and maintained;
3. the device has a small structure and low cost, and after the production and detection of the customized airtight door are finished, the used detection device can be packaged and shipped together with the product, and after receiving the product, a customer can also automatically detect the sealing effect of the airtight door.
Drawings
FIG. 1 is a schematic diagram of a scanning leak detection apparatus according to the present application in use;
FIG. 2 is a schematic view of the appearance of a single device of the scanning leak detection apparatus of the present application;
FIG. 3 is a schematic diagram showing the connection of the main structure of a scanning leak detection apparatus according to the present application;
FIG. 4 is a schematic diagram of a connection structure between an abutment frame and a sparse gas module of a scanning leak detection apparatus according to the present application;
FIG. 5 is an enlarged view of the structure of a scanning leak detection apparatus A according to the present application;
FIG. 6 is a schematic diagram of the top structure of a gas evacuation module of a scanning leak detection apparatus according to the present application;
FIG. 7 is a schematic diagram of a balloon core mounting structure of a scanning leak detection apparatus according to the present application;
FIG. 8 is a schematic diagram of the internal structure of a balloon core of a scanning leak detection apparatus according to the present application;
FIG. 9 is a schematic diagram of a seal cover structure of a scanning leak detection apparatus according to the present application.
In the figure: 1. a testing component; 2. an abutment frame; 3. a gas-repellent module; 4. a positioning frame; 5. a suction cup; 6. a sealing cover; 21. a guide rod; 22. a toothed bar; 23. a flange; 31. a cavity; 32. air holes; 33. an air inlet; 34. a balloon core; 35. a first airtight plate; 36. a first port; 37. a second airtight plate; 38. a second port; 341. a ring cover; 342. a sealing sheet; 343. a notch; 344. a primary air port; 345. a guide post; 346. an auxiliary air guide port; 347. a limit column; 348. a check ball; 41. a latch; 42. a positioning rod; 43. an arc groove; 61. hanging lugs; 62. buckling a column; 63. connecting adhesive tapes; 64. a bellows; 65. a limit rod; 66. and a skirt edge.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
As described in the background art, the present application provides a scanning leak detection device in order to solve the above technical problems.
In a typical embodiment of the scanning leak detection device, as shown in fig. 1-9, the scanning leak detection device comprises a plurality of test assemblies 1, wherein the test assemblies 1 have the same structure, each test assembly 1 comprises a positioning frame 4, a gas-repellent module 3 is arranged on the back surface of the positioning frame 4, an abutting frame 2 is connected to the gas-repellent module 3, a sealing cover 6 is arranged in the abutting frame 2, and two sucking discs 5 are respectively arranged at two ends of the positioning frame 4 for fixing;
the leaning frame 2 and the sealing cover 6 are communicated with the air-repellent module 3, the air-repellent module 3 is communicated with an external air pump, an air guide channel is arranged in the air-repellent module 3, guide air acts on the leaning frame 2 and fills the sealing cover 6, the leaning frame 2 pushes the sealing cover 6 to fix the sealing cover, and an air pressure gauge is arranged in the sealing cover 6.
At door plant one side, lay along airtight door crack department and install a plurality of test assembly 1, external air pump work, to the leading-in gas of sparse gas module 3, gas is at first acted on support and lean on frame 2, and it promotes sealed cowling 6 closely laminating in crack department, then in the gas fills sealed cowling 6, makes sealed cowling 6 and forms the high pressure space between the door plant, through the work of built-in barometer, monitors the local inside and outside pressure differential condition of formation to reach the effect to airtight door scanning leak hunting.
When the airtight door is detected, the door plate and the door pocket are horizontally arranged, the test assembly 1 is arranged and installed along the trend of the door gap, under the condition that the size of the door plate is larger, the test assembly 1 can be subjected to transposition installation detection for multiple times, the leakage problem occurs in the detection process when the whole airtight door sealing effect is completely detected, the point position where the problem occurs can be directly known to repair the problem position, in addition, the test assembly 1 is installed along the door gap, under the customized condition, the door plate has different shapes, the change condition of the door gap is changeable, the set test assembly 1 is not influenced by the change of the door gap, the faced different door gaps can be directly installed, and when the door plate is required to be closed, the door plate and the door pocket need to be kept flat as much as possible to avoid the corner part.
Further, referring to fig. 4-8, the air-repellent module 3 is hollow, two sides of the air-repellent module 3 are respectively provided with a cavity 31, the bottom of the air-repellent module 3 is provided with an air hole 32, the air hole 32 is communicated with the sealing cover 6, the front of the air-repellent module 3 is provided with an air inlet 33, the air-repellent module is directly communicated with the bottom of an air-guide ball core 34 arranged in the air-repellent module, and the air-guide ball core 34 plays roles of air guide and non-return in the air-repellent module 3;
the lower positions of the two sides of the air guide ball core 34 are respectively provided with a second airtight plate 37 fixedly connected with the air-repellent module 3, the two sides of the second airtight plates 37 are respectively provided with a first airtight plate 35 which is vertically installed, and the top of the first airtight plate 35 extends to the top end of the inside of the air-repellent module 3. The top of the air-guiding balloon core 34 is provided with a ring cover 341, the ring cover 341 is connected with the top end of the inside of the air-guiding module 3 and is connected with the surrounding first airtight plates 35, so that airtight spaces which are not communicated with the inside of the air-guiding module 3 are formed on two sides of the air-guiding balloon core 34 respectively, two main air inlets 344 are formed on two sides of the air-guiding balloon core 34 respectively and are communicated with the airtight spaces on two sides, and a first through opening 36 is formed on the top of the cavity 31 and is communicated with the airtight spaces on the same side;
the inside of the balloon core 34 is provided with a check ball 348, the bottom of the check ball 348 is seated at the communication port of the balloon core 34 and the air inlet 33 and can seal the communication port, three limit posts 347 are arranged in the balloon core 34 around the communication port, two ends of each limit post 347 are connected with the upper end and the lower end of the inside of the balloon core 34, and the check ball 348 is arranged between the three limit posts 347 to prevent the side movement of the check ball;
the gaps at the two sides of the airtight space are provided with openings 343 on the ring cover 341, the top of the air guide ball core 34 is provided with auxiliary air guide ports 346, and a second opening 38 is formed between the two opposite first airtight plates 35, so that the air holes 32 are communicated with the inside of the air guide ball core 34 through the second opening 38 and the top of the auxiliary air guide ports 346; the auxiliary air guide port 346 is in a cross structure, the guide post 345 is arranged on the check ball 348, the sealing piece 342 is arranged at the tail end of the guide post 345 and is matched with the auxiliary air guide port 346, when the check ball 348 is seated on the communication port, the sealing piece 342 is clamped into the auxiliary air guide port 346, the cross section of the guide post 345 is in a cross structure, but the size of the guide post 345 is smaller than that of the auxiliary air guide port 346;
the rack 2 is provided with a toothed bar 22, the toothed bar 22 passes through the positioning rack 4, a clamping tenon 41 is rotatably arranged at the connecting part of the positioning rack 4 and the toothed bar 22, a spring is arranged at the connecting part, an arc groove 43 is formed in the clamping tenon 41, the positioning rack 4 is provided with a positioning rod 42, and the positioning rod 42 is positioned in the arc groove 43.
Specifically, the external air pump injects air into the air-guiding balloon core 34 through the air inlet 33, the injected air firstly pushes up the check ball 348, the raised check ball 348 synchronously pushes up the sealing piece 342 to open the auxiliary air-guiding port 346, at this time, the air-guiding balloon core 34 is in an air-guiding state, the air injected into the air-guiding balloon core 34 is injected, as the two sides of the air-guiding balloon core 34 are provided with the main air-guiding ports 344, the main air-guiding ports 344 are provided with larger sizes, more air is discharged from the main air-guiding ports 344 at the two sides and is led into the cavity 31 to act against the frame 2, less air is discharged from the auxiliary air-guiding ports 346 at the top of the air-guiding balloon core, and is injected into the lower sealing cover 6 through the air holes 32, the pressure applied against the frame 2 is larger, when the pressure applied to the air-guiding balloon core 34 is larger, the air-guiding balloon core is sunk down to act on the lower sealing cover 6 to tightly press the sealing cover 6 at the gate seam, the toothed bar 22 is driven to sink synchronously, when the toothed bar 22 sinks, the latch 41 rotates downwards, the toothed bar 22 is convenient to pass, when the pressure in the cavity 31 reaches a threshold value, air which is continuously filled is injected into the sealing cover 6 from the auxiliary air guide port 346 in a state that the pressure cannot be continuously pressurized, so that a high-pressure space is formed in the sealing cover 6, the pressure inside the sealing cover 6 is gradually increased, the pressure is expanded outwards, the sealing cover can possibly squeeze out the abutting frame 2, but because the toothed bar 22 is arranged on the abutting frame 2 and connected with the latch 41, the latch 41 cannot continuously rotate upwards when rotating to a horizontal state, so that the toothed bar 22 cannot be moved upwards, namely, cannot be loosened from bottom to top after the abutting frame 2 acts on the sealing cover 6, when the air injection is stopped, the check ball 348 falls back, the auxiliary air guide port 346 is driven to be closed, namely, the air pressure inside the cavity 31 is fixed, the air pressure inside the sealing cover 6 cannot be discharged, and the air pressure inside the sealing cover 6 is set, the air cannot be discharged, and the propping frame 2 cannot move due to the limitation of the clamping tenons 41, so that the air can still be stabilized on the sealing cover 6, the sealing cover 6 is prevented from falling off, and the air pressure inside the air is monitored by the barometer built in the sealing cover 6 as a result of waiting at the moment.
Further, referring to fig. 2-5, two guide rods 21 clamped into the cavities 31 are arranged on the abutting frame 2, the top of each guide rod 21 is of a piston structure, two sides of each guide rod extend outwards, a spring connection is arranged between each extending part and the bottom of each cavity 31, and a flange 23 is arranged at the bottom of the abutting frame 2;
the sealing cover 6 is provided with the hanging lugs 61 which are in butt joint with the flange 23, the bottom of the sealing cover 6 is provided with the skirt 66, the skirt 66 is thinner, the bottoms of the front side and the rear side of the skirt 66 are respectively provided with the buckling columns 62, and the main body of the sealing cover 6, the buckling columns 62 and the skirt 66 are made of rubber;
the top of the sealing cover 6 is provided with a connecting adhesive tape 63, a corrugated pipe 64 is arranged at the middle position of the connecting adhesive tape 63, the corrugated pipe 64 is communicated with the inside of the sealing cover 6, two sides of the corrugated pipe 64 are respectively provided with a limiting rod 65, a groove which is contacted with the limiting rod 65 is formed in the connecting adhesive tape 63, the top of the corrugated pipe 64 protrudes, and the protruding part is clamped into the air hole 32.
The air guided by the guide balloon core 34 is firstly injected into the cavity 31, the guide rod 21 is pushed to move downwards to drive the abutting frame 2 to sink, the air is in contact with the sealing cover 6 more tightly, the air is synchronously stored by the spring in the cavity 31, the flange 23 at the end part of the air is abutted with the hanging lugs 61 in the sinking process of the abutting frame 2, so that the skirt 66 at the bottom of the sealing cover 6 gradually expands outwards, the lining of the air is collapsed and is attached to a door plate and a door frame, and then a closed space is formed in the sealing cover 6, in the process, the end part of the sealing cover 6 is also attached to the door plate due to the pressing of the abutting frame 2, in the process of keeping away from the positioning frame 4, the communication state between the inside of the sealing cover 6 and the air hole 32 is ensured, so as to stably inject and press the buckling column 62 is clamped into a door seam, the closed space formed inside the sealing cover 6 is avoided, and the pressure relief of the door is required to be ensured, and the sealing cover is not required to be in a fixed state, the door seam is not required to be in the shape of the door seam is not fixed due to the factors of the manufacturing, the door seam is formed, the door seam is not in the shape is not fixed, the door seam is required to be matched with the door seam, and the sealing cover 62 is required to be matched with the arc-shaped, and the sealing cover is not required to be in the arc-shaped and the sealing cover is not to be subjected to the air pressure seam is required to be sealed;
simultaneously, when the inside of the cavity 31 bears pressure, a part of air is injected into the sealed cover 6, when the air pressure in the sealed cover 6 rises to a preset threshold value, the external air pump stops working, at the moment, the check ball 348 automatically falls down to block the communication port between the air guide ball core 34 and the air inlet 33, meanwhile, the sealing piece 342 connected above the check ball 348 also automatically seals the top auxiliary air guide port 346, at the moment, two closed spaces are formed, one is a sealed space communicated with the inside of the annular cover 341 and the air guide ball core 34, the high air pressure of the space is applied to the abutting frame 2 to provide pressure for abutting the sealed cover 6, the other sealed space is communicated with the air hole 32 to remove the outer space of the air guide ball core 34, the air pressure of the space is higher, the material is provided for the air pressure meter to measure the internal air pressure change, and the air pressure in the cavity 31 is higher than the air pressure in the sealed cover 6, so that the conditions necessary for pressing the sealed cover 6 are overcome.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The scanning leak detection device comprises a plurality of test assemblies (1) with the same structure, and is characterized in that: the test assembly (1) comprises a positioning frame (4), a gas-repellent module (3) is mounted on the back surface of the positioning frame (4), the gas-repellent module (3) is connected with a leaning frame (2) and a sealing cover (6), and the sealing cover (6) is positioned on the inner side of the leaning frame (2);
the air-evacuation module (3) is communicated with the external air pump, an air guide channel is arranged in the air-evacuation module (3), the air guide channel guides air to act on the leaning support (2) and is filled into the sealing cover (6), the leaning support (2) is leaning against the tight sealing cover (6), and an air pressure gauge is arranged in the sealing cover (6).
2. A scanning leak detection apparatus as defined in claim 1, wherein: the air-evacuation module (3) is hollow, the hollow part is provided with an air-guide balloon core (34), an air inlet (33) is formed in front of the air-evacuation module (3), the air inlet (33) is directly communicated with the bottom of the air-guide balloon core (34), and the air-guide balloon core (34) plays roles in air guide and non-return in the air-evacuation module (3).
3. A scanning leak detection apparatus as defined in claim 1, wherein: the two sides of the air-evacuation module (3) are respectively provided with a cavity (31), the bottom of the air-evacuation module (3) is provided with an air hole (32), two guide rods (21) are arranged on the propping frame (2) and are respectively inserted into the two cavities (31), and the sealing cover (6) is communicated with the air hole (32).
4. A scanning leak detection apparatus as defined in claim 2 wherein: the air guide ball core (34) bilateral symmetry respectively is provided with a second airtight plate (37) and dredges air module (3) fixed connection, the both ends of second airtight plate (37) are respectively vertical to be provided with a first airtight plate (35), and first airtight plate (35) extend to the inside top of dredge air module (3), the top of air guide ball core (34) is provided with ring cover (341), and ring cover (341) dock with dredge air module (3) inside top, and all be in connected state with first airtight plate (35) all around.
5. A scanning leak detection apparatus as defined in claim 4 wherein: the second airtight plate (37) is positioned on the same side as the cavity (31), a first through hole (36) is formed in the top end of the cavity (31) and is communicated with the air-repellent module (3), and a main air hole (344) is formed in two sides of the air-guide balloon core (34) corresponding to the second airtight plate (37).
6. A scanning leak detection apparatus as defined in claim 4 wherein: the inside of the guide balloon core (34) is provided with a non-return ball (348), the non-return ball (348) is arranged at the communication port between the guide balloon core (34) and the air inlet (33), the non-return ball (348) is connected with a guide column (345), the tail end of the guide column (345) is connected with a sealing sheet (342), the top end of the guide balloon core (34) is provided with a secondary air guide port (346) which is communicated into the ring cover (341), and the sealing sheet (342) can be clamped into the secondary air guide port (346) and sealed.
7. A scanning leak detection apparatus as defined in claim 4 wherein: a gap (343) is formed in the front side and the rear side of the ring cover (341), and the sealing cover (6) is communicated into the air guide ball core (34) through the air hole (32), the gap (343) and the auxiliary air guide opening (346).
8. A scanning leak detection apparatus as defined in claim 3 wherein: the top end of the guide rod (21) is of a piston structure, two sides of the guide rod extend outwards, and a spring is arranged between the extending part and the bottom of the cavity (31).
9. A scanning leak detection apparatus as defined in claim 1, wherein: be provided with on the sealed cowling (6) and connect adhesive tape (63), the intermediate position department of connecting adhesive tape (63) is provided with bellows (64), in the gas pocket (32) is gone into to the tip card of bellows (64), the both sides of bellows (64) respectively extend have gag lever post (65), set up on connecting adhesive tape (63) with gag lever post (65) the recess of butt joint.
10. A scanning leak detection apparatus as defined in claim 3 wherein: the bottom of support leaning on frame (2) is provided with flange (23), be provided with on sealed cowling (6) with hangers (61) of flange (23) butt joint, the bottom of sealed cowling (6) is shirt rim (66), and knot post (62) are respectively installed to the front and back side of shirt rim (66) bottom, sealed cowling (6), knot post (62) and shirt rim (66) are the rubber material.
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| CN202310968365.2A CN117232745A (en) | 2023-08-03 | 2023-08-03 | Scanning leak detection device |
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| CN202310968365.2A CN117232745A (en) | 2023-08-03 | 2023-08-03 | Scanning leak detection device |
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| CN202310968365.2A Pending CN117232745A (en) | 2023-08-03 | 2023-08-03 | Scanning leak detection device |
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