CN110954277A - Leak detection device - Google Patents
Leak detection device Download PDFInfo
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- CN110954277A CN110954277A CN201911214882.0A CN201911214882A CN110954277A CN 110954277 A CN110954277 A CN 110954277A CN 201911214882 A CN201911214882 A CN 201911214882A CN 110954277 A CN110954277 A CN 110954277A
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- top end
- leak
- leak detection
- air cylinder
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- 238000001514 detection method Methods 0.000 title claims abstract description 120
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 49
- 239000007789 gas Substances 0.000 claims description 39
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 239000001307 helium Substances 0.000 claims description 13
- 229910052734 helium Inorganic materials 0.000 claims description 13
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052736 halogen Inorganic materials 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 4
- 230000029052 metamorphosis Effects 0.000 claims description 2
- 239000002775 capsule Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- -1 copper-zinc alloy Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001819 mass spectrum Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- SXKZZFLSYPUIAN-UHFFFAOYSA-N [Cu].[Zn].[Au] Chemical compound [Cu].[Zn].[Au] SXKZZFLSYPUIAN-UHFFFAOYSA-N 0.000 description 1
- HMXCSHJQBPUTDP-UHFFFAOYSA-N [Mo].[Cu].[Ni] Chemical compound [Mo].[Cu].[Ni] HMXCSHJQBPUTDP-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
- G01M3/205—Accessories or associated equipment; Pump constructions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a leak detection device, the leak detection device of an embodiment of the invention comprises a bracket, and further comprises: the accommodating device is arranged on the bracket and comprises a leakage detection box and a closed door, the leakage detection box is provided with a feeding opening, and the closed door is movably covered on the feeding opening; the clamp is positioned inside the leak detection box and used for fixing a workpiece to be detected; the leakage air bag is positioned inside the workpiece to be detected and is used for containing leakage detection gas; and the heating device is used for heating the air leakage bag, so that the air leakage bag is heated, an opening is formed in the surface of the air leakage bag, and the leakage detection gas in the air leakage bag leaks. The leak detection gas is put into the workpiece to be detected before the workpiece to be detected is completely sealed, the problem that the leak detection gas cannot be introduced from the outside of the workpiece to be detected when the leak detection of the closed container is carried out is solved, the leak detection gas can be discharged by the gas leakage bag through heating, and the operation is simple.
Description
Technical Field
The invention belongs to the technical field of leak detection, and particularly relates to a leak detection device.
Background
In the prior art, along with the development of scientific technology, no matter in the technical field of vacuum or high-pressure air tightness engineering, the air tightness requirement of a part or a system is improved along with the development of the scientific technology, so that the research on improving the air tightness detection precision and influencing the air tightness factor is very urgent. When leak detection is performed on a sealed container, when the quality of a welding seam and the surface of the welding seam are detected to be provided with a tiny leak hole, a workpiece is completely sealed, a positive pressure method and a negative pressure method of a traditional leak detection method cannot be realized, a back pressure method is often adopted to perform leak detection on the sealed container, and the leak detection method is suitable for a detected part with a small volume. The leak detection process comprises 3 steps: pressurizing, purifying and detecting leakage. During the pressurizing process, the detected piece is stored in a container filled with high-pressure helium for a certain time, so that the helium enters the detected piece through the leakage hole, and the inflation pressure and helium partial pressure in the detected piece are gradually increased along with the increase of time; after entering the purification stage, flushing with dry nitrogen and the like, or removing helium adsorbed on the outer surface of the detected piece by a standing means; and finally, placing the detected piece into a vacuum chamber, vacuumizing the vacuum chamber, enabling helium in the detected piece to flow out to enter a leak detector by utilizing the pressure difference effect, and outputting an indication by the leak detector to judge the existence and the leak rate of a leak hole.
However, the back pressure method is not suitable for a test piece having a large leak hole. When the leak hole is too large, helium filled into the detected part can quickly run off in the purification stage, and the longer the purification time is, the more serious the helium runs off, so that the output indication of the leak detector is reduced, the false phenomenon that the leak rate of the leak hole is very small is caused, and even the leak hole cannot be detected.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a leakage detection device.
The leak detection device of an embodiment of the invention includes a support, and further includes:
the accommodating device is arranged on the bracket and comprises a leakage detection box and a closed door, the leakage detection box is provided with a feeding opening, and the closed door is movably covered on the feeding opening;
the clamp is positioned inside the leak detection box and used for fixing a workpiece to be detected;
the leakage air bag is positioned inside the workpiece to be detected and is used for containing leakage detection gas;
the heating device is used for heating the air leakage bag, so that the air leakage bag is heated, an opening is formed in the surface of the air leakage bag, and the air leakage detection gas in the air leakage bag is leaked;
and the detection device is communicated with the inside of the leakage detection box and is used for detecting gas in the leakage detection box.
According to the leakage detecting device provided by the embodiment of the invention, the leakage detecting gas is put in before the workpiece to be detected is completely sealed, so that the problem that the leakage detecting gas cannot be introduced from the outside of the workpiece to be detected in the leakage detecting process of the closed container is solved, the leakage detecting gas can be discharged by heating the leakage bag, the operation is simple, the detection precision is high, and the production efficiency is improved. As long as the detection device detects that the leak detection gas exists in the leak detection box, the leak detection device can indicate that the workpiece to be detected has a leak hole, and the technical problem of detection errors caused by the large leak hole of the workpiece to be detected in the back pressure helium mass spectrum leak detection method is solved.
In a preferred or optional embodiment, the leaky-balloon is a memory metal balloon, and when the temperature of the memory metal balloon reaches the transformation temperature, an opening is formed on the surface of the memory metal balloon.
In a preferred or alternative embodiment, the material of the memory metal balloon comprises nitinol.
In a preferred or alternative embodiment, the leak detection gas is a halogen gas, helium gas, or hydrogen gas.
In a preferred or optional embodiment, the leak detection device further comprises a sealing mechanism, the sealing mechanism is used for sealing the workpiece to be detected, and the sealing device comprises a top end sealing device, a side surface sealing device and a bottom end sealing device;
the top end sealing device is positioned at the top end of the leakage detection box and comprises a top end supporting frame, a top end air cylinder and a top end push rod, the top end supporting frame is fixedly connected to the top end of the leakage detection box, the top end air cylinder is fixedly connected to the top end supporting frame, a piston rod of the top end air cylinder faces the clamp, the top end push rod is fixedly connected to a piston rod of the top end air cylinder, and the axial direction of the top end push rod is parallel to the extending direction of the top end air cylinder;
the side sealing device is positioned on the side surface of the leak detection box and comprises a side air cylinder and a side push rod, the side air cylinder is positioned on the outer side of the side surface of the leak detection box, a piston rod of the side air cylinder faces the clamp, the side push rod is fixedly connected to the piston rod of the side air cylinder, and the axial direction of the side push rod is parallel to the extending direction of the side air cylinder;
the bottom sealing device is located at the bottom end of the leakage detection box and comprises a bottom air cylinder and a bottom push rod, the bottom air cylinder is located on the outer side of the bottom end of the leakage detection box, a piston rod of the bottom air cylinder faces the clamp, the bottom push rod is fixedly connected to the piston rod of the bottom air cylinder, and the axial direction of the bottom push rod is parallel to the extending direction of the bottom air cylinder.
In a preferred or optional embodiment, the leak detection apparatus further includes a door closing device, the door closing device includes a door closing guide rail, a slider, and a door closing cylinder, a plane of the door closing guide rail is located on the same plane as a material inlet of the leak detection box, one end of the slider is slidably fitted on the door closing guide rail, the other end of the slider is fixedly connected to the closing door, a piston rod of the door closing cylinder is fixedly connected to the closing door, and the door closing cylinder pushes the closing door to move on the door closing guide rail.
In a preferred or optional embodiment, the leak detection device further comprises a push-out device, the push-out device comprises a push-out guide rail and a push-out air cylinder, the push-out guide rail is arranged at the bottom end of the inside of the leak detection box, the push-out guide rail faces the feeding port of the leak detection box, the bottom end of the fixture is connected with the push-out guide rail in a sliding mode, the push-out air cylinder is arranged outside the leak detection box, a piston rod of the push-out air cylinder is fixedly connected with the fixture, and the push-out air cylinder drives the fixture to move on the push-out guide rail.
In order that the invention may be more clearly understood, specific embodiments thereof will be described hereinafter with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of the overall configuration of a leak detection apparatus in embodiment 1 of the invention;
FIG. 2 is a side elevational view of apparatus for leak detection in accordance with example 1 of the present invention;
FIG. 3 is a schematic view of the operating principle of leak detection apparatus in example 1 of the present invention;
fig. 4 is a schematic structural diagram of a containing device in embodiment 1 of the present invention;
FIG. 5 is a schematic structural view of a leaking bladder according to embodiment 1 of the present invention;
FIG. 6 is a schematic structural view of a sealing mechanism and a jig according to embodiment 1 of the present invention;
FIG. 7 is a schematic structural view of a seal mechanism according to embodiment 1 of the present invention;
FIG. 8 is a schematic structural view of a door closing mechanism according to embodiment 1 of the present invention;
fig. 9 is a schematic structural view of the ejector according to embodiment 1 of the present invention.
The drawings illustrate schematically: 1. a support; 2. a housing device; 21. a leak detection box; 211. a feeding port; 22. a closing door; 3. a clamp; 4. an air leakage bag; 5. a heating device; 6. a detection device; 7. a sealing mechanism; 71. a top end sealing device; 72. a side sealing device; 73. a bottom end sealing device; 74. a box penetrating sealing element; 8. a door closing device; 81. a door closing guide rail; 82. a door closing cylinder; 9. a push-out device; 91. pushing out the guide rail; 92. and pushing out the cylinder.
Detailed Description
Example 1
Referring to fig. 1 through 3, fig. 1 is a schematic diagram of the overall construction of leak detection apparatus in accordance with example 1 of the invention, fig. 2 is a side view of leak detection apparatus in accordance with example 1 of the invention, and fig. 3 is a schematic diagram of the operating principle of leak detection apparatus in accordance with example 1 of the invention.
The leakage detection device provided by the embodiment comprises a support 1, a containing device 2, a clamp 3, a leakage bag 4, a heating device 5, a detection device 6, a sealing mechanism 7, a door closing device 8 and a pushing device 9. The accommodating device 2 is arranged on the support 1, the clamp 3 is arranged inside the accommodating device 2, the leakage air bag 4 is placed inside a workpiece to be tested when the leakage air bag is used, the heating device 5 is used for heating the leakage air bag 4, the detection device 6 is communicated with the inside of the leakage detection box 21, the sealing mechanism 7 is located outside the accommodating device 2, the door closing device 8 is arranged on the support 1 and matched with the accommodating device 2, the push-out device 9 is arranged on the support 1, and the output end of the push-out device 9 is fixedly connected with the clamp 3.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a containing device according to embodiment 1 of the present invention.
The accommodating device 2 comprises a leakage detecting box 21 and a sealing door 22, the leakage detecting box 21 is a hollow box body, the leakage detecting box 21 is provided with a feeding port 211, a workpiece to be detected and the clamp 3 are placed in the leakage detecting box 21 through the feeding port 211, and the sealing door 22 is movably covered on the feeding port 211. In this embodiment, the bracket 1 is provided with a guide rail, the closing door 22 is embedded on the guide rail through a slider, and the closing door 22 can move on the guide rail, so as to control the closing of the material inlet 211, in other embodiments, one side of the closing door 22 is fixed on the bracket 1 through a rotating shaft, the closing door 22 rotates around the rotating shaft, and the closing of the closing door 22 on the material inlet 211 is controlled by controlling the rotating angle of the closing door 22, which may also be other movable closing manners commonly used by those skilled in the art.
Anchor clamps 3 are for being provided with the box body of accommodation space, the top of box body is provided with the opening that is used for placing the work piece that awaits measuring, anchor clamps 3 are used for fixed work piece that awaits measuring.
Referring to fig. 5, fig. 5 is a schematic structural view of an air leakage bag according to embodiment 1 of the present invention.
The heating device 5 is used for heating the air leakage bag 4, so that the air leakage bag 4 is heated, an opening is formed on the surface of the air leakage bag 4, and the air leakage detection gas in the air leakage bag is leaked. The heating device 5 may be disposed inside the accommodating device 2, or may be disposed outside the accommodating device 2 to heat the entire accommodating device 2, and the heating device 5 may be a heating wire heater, a warm air blower, an electromagnetic heating device 5, or other heating devices 5 commonly used by those skilled in the art.
The detection device 6 is communicated with the inside of the leak detection box 21 and is used for detecting leak detection gas in the accommodating cavity of the leak detection box 21. The leak detection gas is halogen gas, helium gas, hydrogen gas or other detectable media, and correspondingly, the detection device 6 is a halogen gas detector, a helium mass spectrometer leak detector, a hydrogen gas detector or other detection devices.
Referring to fig. 6 and 7, fig. 6 is a schematic structural view of a sealing mechanism and a clamp according to embodiment 1 of the present invention, and fig. 7 is a schematic structural view of the sealing mechanism according to embodiment 1 of the present invention.
The sealing mechanism 7 is used for sealing the workpiece to be tested, and the sealing device comprises a top sealing device 71, a side sealing device 72 and a bottom sealing device 73.
The top end sealing device 71 is positioned at the top end of the leak detection box 21, the top end sealing device 71 comprises a top end supporting frame, a top end air cylinder and a top end push rod, the top end supporting frame 1 is fixedly connected with the top end of the leakage detection box 21, the top end air cylinder is fixedly connected with the top end supporting frame 1, the piston rod of the top end cylinder faces the clamp 3, the top end push rod is fixedly connected with the piston rod of the top end cylinder, the axial direction of the top end push rod is parallel to the extending direction of the top end air cylinder, the top end of the leakage detection box 21 is provided with a box penetrating sealing element 74, the top end push rod penetrates into the leakage detection box 21 through the box penetrating sealing piece 74, a piston rod of the top end push rod is provided with a workpiece sealing piece, the workpiece sealing element is used for blocking a hole position of a workpiece to be detected and preventing leakage detection gas from leaking to the outside of the workpiece to be detected through the hole position of the workpiece to be detected.
The number and the specific position of the top end push rod, the side push rod and the bottom end push rod are adjusted according to the number and the position of the holes of the workpiece to be measured. The sealing mechanism 7 can seal the hole site of the workpiece to be detected, and manual sealing by a user is not needed.
Referring to fig. 8 and 9, fig. 8 is a schematic structural diagram of a door closing mechanism in embodiment 1 of the present invention, and fig. 9 is a schematic structural diagram of a pushing device in embodiment 1 of the present invention.
The door closing device 8 includes a door closing guide rail 81, a slider (not shown) and a door closing cylinder 82, the door closing guide rail 81 is disposed on the bracket 1, the plane where the door closing guide rail 81 is located and the material inlet 211 of the leakage detection box 21 are located on the same plane, one end of the slider is slidably embedded on the door closing guide rail 81, the other end of the slider is fixedly connected to the closed door 22, the door closing cylinder 82 is fixedly connected to the bracket 1, a piston rod of the door closing cylinder 82 is fixedly connected to the closed door 22, and the door closing cylinder 82 pushes the closed door 22 to move on the door closing guide rail 81. Preferably, the door closing cylinder 82 is located below the leak detection box 21, and the door closing cylinder 82 pushes the closing door 22 to open and close the feeding port 211 of the leak detection box 21.
The push-out device 9 comprises a push-out guide rail 91 and a push-out cylinder 92, the push-out guide rail 91 is arranged at the bottom end of the interior of the leakage detection box 21, the trend of the push-out guide rail 91 faces the feeding port 211 of the leakage detection box 21, the bottom end of the clamp 3 is connected with the push-out guide rail 91 in a sliding mode, in the embodiment, the bottom end of the clamp 3 is provided with a roller, the roller is connected with the push-out guide rail 91 in a sliding mode, in other embodiments, the bottom end of the clamp 3 can be provided with a sliding block, and the sliding block is connected with the push-out guide rail. The push-out cylinder 92 is arranged outside the leak detection box 21, the push-out cylinder 92 is arranged on the support 1, a piston rod of the push-out cylinder 92 is fixedly connected with the clamp 3, the push-out cylinder 92 drives the clamp 3 to move on the push-out guide rail 91, and when the piston rod of the push-out cylinder 92 extends out, the clamp 3 moves from the inside of the leak detection box 21 to the feeding port 211 of the leak detection box 21.
The leak detection device of this embodiment puts into leak detection gas before the work piece that awaits measuring is sealed completely, can't let in the problem of leak detection gas from the outside of the work piece that awaits measuring when solving the airtight container leak hunting, and leak hunting bag can emit leak detection gas through the heating, easy operation, and the detection precision is high, improves production efficiency. As long as the detection device detects that the leak detection gas exists in the leak detection box, the leak detection device can indicate that the workpiece to be detected has a leak hole, and the technical problem of detection errors caused by the large leak hole of the workpiece to be detected in the back pressure helium mass spectrum leak detection method is solved.
Example 2
The main difference between this embodiment and embodiment 1 is that the material of the air leakage bag 4 is different, and the air leakage bag 4 is made of a material which is fragile by force or decomposed by heat, such as glass, plastic and the like.
When leak gasbag 4 adopts the fragile material of atress, leak gasbag 4 is being put into behind the inside of holding device 2, heating device 5 heats and holds leak hunting gas leak gasbag 4, later the leak hunting gas is heated the inflation, leak hunting gas toward leak the internal surface extrusion of gasbag 4, cause at last leak gasbag 4 splits, leak hunting gas follows leak gasbag 4 reveals.
When leak gasbag 4 adopts the material that is heated and decomposes, leak gasbag 4 is being put into behind the inside of holding device 2, heating device 5 heats and holds leak hunting gas leak gasbag 4, later leak gasbag 4 is heated and decomposes, causes at last leak hunting gasbag 4 splits open, leak hunting gas follows leak gasbag 4 reveals.
The leak detection device of this embodiment, the hourglass gasbag that adopts is disposable material, leak the easy batch production of gasbag, moreover the material cost that leaks the gasbag adoption is not high.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (7)
1. A leak detection apparatus comprising a support, comprising:
the accommodating device is arranged on the bracket and comprises a leakage detection box and a closed door, the leakage detection box is provided with a feeding opening, and the closed door is movably covered on the feeding opening;
the clamp is positioned inside the leak detection box and used for fixing a workpiece to be detected;
the leakage air bag is positioned inside the workpiece to be detected and is used for containing leakage detection gas;
the heating device is used for heating the air leakage bag, so that the air leakage bag is heated, an opening is formed in the surface of the air leakage bag, and the air leakage detection gas in the air leakage bag is leaked;
and the detection device is communicated with the inside of the leakage detection box and is used for detecting gas in the leakage detection box.
2. Leak detection apparatus according to claim 1, wherein:
the air leakage bag is a memory metal bag body, and when the temperature of the memory metal bag body reaches the metamorphosis temperature, an opening is formed on the surface of the memory metal bag body.
3. Leak detection apparatus according to claim 2, wherein:
the material of the memory metal balloon comprises nickel titanium alloy.
4. Leak detection apparatus according to claim 1, wherein:
the leak detection gas is halogen gas, helium gas or hydrogen gas.
5. Leak detection apparatus according to claim 1, wherein:
the device comprises a workpiece to be detected, a sealing mechanism and a control mechanism, wherein the workpiece to be detected is sealed by the sealing mechanism;
the top end sealing device is positioned at the top end of the leakage detection box and comprises a top end supporting frame, a top end air cylinder and a top end push rod, the top end supporting frame is fixedly connected to the top end of the leakage detection box, the top end air cylinder is fixedly connected to the top end supporting frame, a piston rod of the top end air cylinder faces the clamp, the top end push rod is fixedly connected to a piston rod of the top end air cylinder, and the axial direction of the top end push rod is parallel to the extending direction of the top end air cylinder;
the side sealing device is positioned on the side surface of the leak detection box and comprises a side air cylinder and a side push rod, the side air cylinder is positioned on the outer side of the side surface of the leak detection box, a piston rod of the side air cylinder faces the clamp, the side push rod is fixedly connected to the piston rod of the side air cylinder, and the axial direction of the side push rod is parallel to the extending direction of the side air cylinder;
the bottom sealing device is located at the bottom end of the leakage detection box and comprises a bottom air cylinder and a bottom push rod, the bottom air cylinder is located on the outer side of the bottom end of the leakage detection box, a piston rod of the bottom air cylinder faces the clamp, the bottom push rod is fixedly connected to the piston rod of the bottom air cylinder, and the axial direction of the bottom push rod is parallel to the extending direction of the bottom air cylinder.
6. Leak detection apparatus according to claim 1, wherein:
still include the door closing device, the door closing device is including closing door guide rail, slider and door closing cylinder, the guide rail place plane of closing the door with the pan feeding mouth of examining the leakage box is located the coplanar, the slip gomphosis of slider one end is in on the guide rail of closing the door, the other end fixed connection of slider in closed door, the piston rod fixed connection of door closing cylinder in closed door, door closing cylinder promotes closed door is in move on the guide rail of closing the door.
7. Leak detection apparatus according to claim 1, wherein:
still include ejecting device, ejecting device includes ejecting guide rail and ejecting cylinder, ejecting guide rail sets up the bottom of the inside of examining the leak box, ejecting guide rail's trend towards examine the pan feeding mouth of leak box, the bottom of anchor clamps with ejecting guide rail sliding connection, ejecting cylinder sets up examine the outside of leak box, ejecting cylinder's piston rod fixed connection anchor clamps, ejecting cylinder drives anchor clamps are in the ejecting guide rail is last to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911214882.0A CN110954277B (en) | 2019-12-02 | 2019-12-02 | Leak detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911214882.0A CN110954277B (en) | 2019-12-02 | 2019-12-02 | Leak detection device |
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| CN110954277A true CN110954277A (en) | 2020-04-03 |
| CN110954277B CN110954277B (en) | 2023-12-26 |
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| CN201911214882.0A Active CN110954277B (en) | 2019-12-02 | 2019-12-02 | Leak detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184329A (en) * | 2021-10-18 | 2022-03-15 | 上海贤日测控科技有限公司 | Leak detection mechanism |
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| CN110954277B (en) | 2023-12-26 |
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