CN112414628A - Refrigerator refrigerant leakage detection device and detection method - Google Patents
Refrigerator refrigerant leakage detection device and detection method Download PDFInfo
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- CN112414628A CN112414628A CN202011233428.2A CN202011233428A CN112414628A CN 112414628 A CN112414628 A CN 112414628A CN 202011233428 A CN202011233428 A CN 202011233428A CN 112414628 A CN112414628 A CN 112414628A
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- rod
- pressing
- extrusion rod
- sealing plate
- connecting pipe
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- 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
Abstract
The invention discloses a refrigerator refrigerant leak detection device and a detection method, and relates to the technical field of refrigerator detection. The invention includes a sealing plate; the sealing plate is rotationally connected with a connecting pipe; one side surface of the sealing plate is connected with a plurality of pairs of pressing mechanisms in a sliding manner; both ends of the connecting pipe penetrate through the sealing plate, and the peripheral side surface of one end, which is positioned at the side of the sealing ring, is fixedly connected with a plurality of hinged supports; the pressing mechanism comprises a pressing rod and an extrusion rod; a plurality of springs are connected between the pressing rod and the extrusion rod; the upper surface of the pressing rod is hinged with a plurality of pressing blocks; one end of the pressing block, which is close to the extrusion rod, is of a wedge-shaped structure, and the inclined plane of the pressing block faces downwards; the upper surface of the extrusion rod is of an inclined surface structure and is matched with the wedge-shaped end of the pressing block; the side surface of the extrusion rod is hinged with a connecting rod; one end of the connecting rod is hinged with the hinged support. The invention seals the compressor bin through the sealing plate and integrally exhausts air in the compressor bin through the connecting pipe, thereby realizing the effect of integral detection and solving the problems of low detection efficiency and poor accuracy in the prior art.
Description
Technical Field
The invention belongs to the technical field of refrigerator detection, and particularly relates to a refrigerator refrigerant leakage detection device and a detection method.
Background
The leakage detection of the refrigerant in the process of manufacturing the refrigerator is an essential important process, and if the refrigerant leaks, the refrigeration performance is affected, and meanwhile, potential safety hazards exist.
In a compressor bin of a refrigerator and an ice chest, a compressor, a condenser and other refrigeration elements are welded and connected through metal pipelines, after a refrigerant is filled between the refrigeration elements and the pipelines, the risk of leakage from a welding position may exist due to welding and sealing of the welding position, and therefore the refrigerant leakage detection is required to be carried out at the welding position in the compressor bin. The compressor bin is a relatively independent space, the refrigerator box bodies are sealed at the back, the top and two sides, the bottom is a compressor bottom plate, the front side is in an open state before the leakage of the refrigerant is detected, and the grid-shaped cover plate is adopted for sealing after the refrigerant is detected to be qualified. The compressor bin contains a compressor, a water receiving disc, a condenser, a power line and a plurality of pipeline connecting ports, and is relatively dense, so that the refrigerant leakage detection operation needs to be careful.
At present, the main stream refrigerant leak detection state is that a hand-held detection head is connected to a mass spectrometer through a gas pipe, the front section of the detection head has a gas suction function, and a worker can manually control the gas suction function. Firstly, a worker places a detection head at a place where leakage is likely to occur, generally a welding point between pipelines, automatically inhales gas when the detection head is opened, sucks gas around the welding point into a mass spectrometry chamber through a gas pipe, carries out mass spectrometry after ionization by using a molecular pump, and sends out a safety alarm when a specific molecular weight occurs to prompt the worker that the welding point has refrigerant leakage.
In the existing refrigerant leak detection process, a worker needs to extend a detection head to a position close to a welding point, then a suction switch is turned on, gas at the welding point is collected, and the gas is sucked into a mass spectrometry chamber for analysis and detection. And about 10 welding points in total of a refrigerator and ice chest, the staff all need detect every welding point, because the detection head inspiratory capacity is relatively poor, need be very close to the welding point, generally within 10mm to every welding point tow sides all will detect, detect time about 3 seconds at every turn.
Therefore, only 30 seconds are needed for detection of one refrigerator, and a worker can correctly detect whether the refrigerant leaks through very skilled operation, so that if the clinker degree of the worker is not enough, the detection efficiency is lower, the detection accuracy is not guaranteed, and the detection link is uncontrollable.
Therefore, improvement of the existing refrigerator leak detection mode is urgently needed to improve the accuracy of refrigerator detection and the detection efficiency, and avoid the situation that the detection quality consistency is poor due to the problems of the proficiency of workers and the like.
Disclosure of Invention
The invention aims to provide a refrigerator refrigerant leak detection device and a detection method, wherein a compressor bin is sealed through a sealing plate, and the inside of the compressor bin is integrally pumped through a connecting pipe, so that the integral detection effect is realized, and the problems of low detection efficiency and poor accuracy in the prior art are solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a refrigerator refrigerant leak detection device and a detection method, comprising a sealing plate; the sealing plate is provided with a through hole, and a connecting pipe is rotatably connected in the through hole; one side surface of the sealing plate is connected with a plurality of pairs of pressing mechanisms in a sliding manner; a sealing ring is fixedly connected to the edge of one side surface of the sealing plate;
the two ends of the connecting pipe penetrate through the sealing plate, and the peripheral side face of one end, which is positioned at the side of the sealing ring, is fixedly connected with a plurality of hinged supports; the circumferential side surface of the other end of the connecting pipe is fixedly connected with a ratchet wheel; the sealing plate is rotationally connected with a pawl matched with the ratchet wheel;
the pressing mechanism comprises a pressing rod and an extrusion rod; the pressing rod and the extrusion rod are arranged in parallel, and a plurality of springs are connected between the pressing rod and the extrusion rod;
the upper surface of the pressing rod is hinged with a plurality of pressing blocks; the pressing block and the pressing rod are arranged vertically; one end of the pressing block, which is close to the extrusion rod, is of a wedge-shaped structure, and the inclined plane of the pressing block faces downwards;
the upper surface of the extrusion rod is of an inclined surface structure and is matched with the wedge-shaped end of the pressing block; the side surface of the extrusion rod is hinged with a connecting rod; one end of the connecting rod is hinged with the hinged support; the connecting rod is obliquely arranged relative to the extrusion rod and used for driving the extrusion rod to slide by utilizing the connecting rod through rotation of the connecting pipe.
Furthermore, a rubber pad is fixedly connected to the lower surface of one end, far away from the extrusion rod, of the pressing block.
Furthermore, a plurality of shift levers are fixedly connected to the circumferential side surface of the connecting pipe.
A detection method for refrigerator refrigerant leak detection comprises the following steps:
the method comprises the following steps: covering the sealing plate on the opening side of the compressor bin, and attaching the sealing ring to the outer wall of the refrigerator shell;
step two; rotating the connecting pipe, and pushing the extrusion rod through the connecting rod; the pressing rod is pushed by a spring, and the upper surface of the pushing and pressing rod is matched with the pressing block, so that one end of the pressing block, far away from the pressing rod, presses the inner wall of the refrigerator shell;
step three: starting to extract air and detect the air pipe and the connecting pipe of the mass spectrometer;
step four: after the detection is finished, the pawl is rotated and separated from the ratchet wheel; the connecting pipe is reversed, so that the pressing rod and the extrusion rod are reset; and (4) detaching the sealing plate.
The invention has the following beneficial effects:
the invention seals the compressor bin through the sealing plate, utilizes the connecting pipe to be connected with the mass spectrometer, and performs air extraction detection, thereby realizing the overall detection of the pipeline in the compressor bin and effectively improving the overall detection efficiency. Meanwhile, the condition that the detection accuracy is influenced due to improper operation of detection personnel is avoided, and the detection accuracy is effectively improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a refrigerator refrigerant leak detection device according to the present invention;
FIG. 2 is a schematic rear view of the structure of FIG. 1;
FIG. 3 is a schematic structural view of a pressing mechanism;
FIG. 4 is a front view of the hold-down mechanism;
FIG. 5 is a schematic structural diagram of an embodiment of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-sealing plate, 2-connecting pipe, 3-pressing rod, 4-extruding rod, 5-connecting rod, 6-refrigerator shell, 101-sealing ring, 102-pawl, 201-hinged support, 202-ratchet wheel, 203-driving rod, 301-spring and 302-pressing block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1 and 2, the present invention is a refrigerator refrigerant leak detection device, including a sealing plate 1; the through-hole has been seted up to closing plate 1, and the through-hole internal rotation is connected with connecting pipe 2, and accessible slip sealing ring seals between 2 inner walls of connecting pipe and through-hole inner wall. One side surface of the sealing plate 1 is connected with two pairs of pressing mechanisms in a sliding way through a sliding rail and sliding block mechanism; a sealing ring 101 is glued or screwed to one side edge of the sealing plate 1.
Two ends of the connecting pipe 2 penetrate through the sealing plate 1, and the peripheral side surface of one end, which is positioned at the side of the sealing ring 101, is fixedly connected with four hinged supports 201; the circumferential side surface of the other end of the connecting pipe 2 is welded or screwed with a ratchet 202; the sealing plate 1 is rotatably connected with a pawl 102 engaged with a ratchet wheel 201, and the pawl 102 and the ratchet wheel 202 are used for limiting the rotation of the connecting pipe 2.
As shown in fig. 3 and 4, two pressing mechanisms of the same pair are symmetrically arranged with each other, and each pressing mechanism comprises a pressing rod 3 and a squeezing rod 4; the pressing rod 3 and the extrusion rod 4 are arranged in parallel, and three to five springs 301 are connected between the pressing rod 3 and the extrusion rod 4.
The upper surface of the pressing rod 3 is hinged with three to six pressing blocks 302; the pressing block 302 and the pressing rod 3 are arranged vertically; one end of the pressing block 302 close to the extrusion rod 4 is of a wedge-shaped structure, and the inclined surface faces downwards;
the upper surface of the extrusion rod 4 is of an inclined surface structure and is matched with the wedge-shaped end of the pressing block 302; the side surface of the extrusion rod 4 is hinged with a connecting rod 5; one end of the connecting rod 5 is hinged with the hinged support 201; the connecting rod 5 is obliquely arranged relative to the extrusion rod 4 and is used for driving the extrusion rod 4 to slide by the connecting rod 5 through the rotation of the connecting pipe 2.
As shown in fig. 5, a method for detecting a refrigerator refrigerant leak includes the following steps:
the method comprises the following steps: the sealing plate 1 is closed on the opening side facing the compressor compartment of the refrigerator, and the gasket 101 is attached to the outer wall of the refrigerator case 6.
Step two; the connecting pipe 2 is rotated, the extrusion rod 4 is pushed by the connecting rod 5, wherein the outer wall of the connecting pipe 2 can be provided with protective grains, two shift levers 203 can be fixedly connected to the peripheral side of the connecting pipe 2, and the connecting pipe 2 can be conveniently rotated by holding the shift levers 203 by hands.
As shown in fig. 2, the connecting pipe 2 rotates, the extrusion rod 4 is pushed towards the outer edge of the sealing plate 1 through the connecting rod 5, the extrusion rod 4 pushes the compression rod 3 through the spring 301, when the compression rod 3 slides to the end of the sliding rail and cannot move, the extrusion rod 4 is gradually close to the compression rod 3, the upper surface of the extrusion rod 4 is matched with the wedge-shaped end of the pressing block 302 at the moment, the pressing block 302 rotates, and the end far away from the extrusion rod 4 compresses the inner wall of the refrigerator shell 6.
Wherein, the lower surface of briquetting 302 is kept away from the one end of extrusion pole 4 is glued or the screw connection has the rubber pad, sets up the rubber pad and can prevent that briquetting 302 from causing the condition emergence of extrusion deformation to refrigerator casing 6.
In the rotating process of the connecting pipe 2, the ratchet wheel 202 and the pawls 102 are matched to prevent the connecting pipe 2 from rotating reversely, so that the pressing block 302 is kept in a state of pressing the refrigerator shell 6, and the sealing plate 1 and the refrigerator shell 6 are sealed under the action of the pressing block 302.
Step three: connecting the gas pipe of the mass spectrometer with the connecting pipe 2, and starting gas extraction detection; the gas pipe of the mass spectrometer can be connected with the connecting pipe 2 through a rotary joint.
The refrigerants used for the refrigerator and the freezer at present are generally R600a, R290 and R134a, the molecular weights of the refrigerants are taken as specific molecular weights, once the mass analyzer detects the specific molecular weight, an alarm is given, and in other cases, no alarm is given.
Air in the compressor bin is sucked into the mass spectrometry chamber through the air pipe and the connecting pipe 2, after ionization by the molecular pump is utilized, mass spectrometry is carried out, and when specific molecular weight appears, the mass spectrometer sends out safety alarm to indicate that refrigerant exists in the compressor bin, namely, a pipeline in the compressor bin has a leakage point. Then the refrigerator has leakage, and then the targeted detection is carried out to determine the position of the leakage point.
If the mass spectrometer does not give out a safety alarm, the refrigerator has no leakage for detecting the refrigerant, so that the detection efficiency is greatly improved through integral detection.
Step four: after the detection is finished, the pawl 102 is rotated and separated from the ratchet wheel 201; the connecting pipe 2 is reversed, and the extrusion rod 4 is pulled by the connecting rod 5, so that the pressing rod 3 and the extrusion rod 4 are reset; the pressing block 302 retreats and is separated from the refrigerator shell 6, and the sealing plate 1 is detached.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (4)
1. A refrigerator refrigerant leak detection device is characterized in that: comprises a sealing plate (1); the sealing plate (1) is provided with a through hole, and a connecting pipe (2) is rotatably connected in the through hole; one side surface of the sealing plate (1) is connected with a plurality of pairs of pressing mechanisms in a sliding manner; a sealing ring (101) is fixedly connected to the edge of one side face of the sealing plate (1);
two ends of the connecting pipe (2) penetrate through the sealing plate (1), and the peripheral side surface of one end, which is positioned at the side of the sealing ring (101), is fixedly connected with a plurality of hinged supports (201); a ratchet wheel (202) is fixedly connected to the circumferential side surface of the other end of the connecting pipe (2); the sealing plate (1) is rotatably connected with a pawl (102) matched with the ratchet wheel (201);
the pressing mechanism comprises a pressing rod (3) and an extrusion rod (4); the pressing rod (3) and the extrusion rod (4) are arranged in parallel, and a plurality of springs (301) are connected between the pressing rod (3) and the extrusion rod (4);
the upper surface of the pressing rod (3) is hinged with a plurality of pressing blocks (302); the pressing block (302) and the pressing rod (3) are arranged vertically; one end of the pressing block (302), which is close to the extrusion rod (4), is of a wedge-shaped structure, and the inclined plane of the pressing block faces downwards;
the upper surface of the extrusion rod (4) is of an inclined surface structure and is matched with the wedge-shaped end of the pressing block (302); the side surface of the extrusion rod (4) is hinged with a connecting rod (5); one end of the connecting rod (5) is hinged with the hinged support (201); the connecting rod (5) is obliquely arranged relative to the extrusion rod (4) and is used for rotating through the connecting pipe (2) and driving the extrusion rod (4) to slide by utilizing the connecting rod (5).
2. The refrigerator refrigerant leak detection device according to claim 1, wherein a rubber pad is fixedly connected to the lower surface of the end of the pressing block (302) far away from the extrusion rod (4).
3. The refrigerant leak detection device for a refrigerator according to claim 1, wherein a plurality of levers (203) are fixedly connected to the peripheral side of the connection pipe (2).
4. A method for detecting leakage detection of refrigerant in refrigerator according to any one of claims 1-3, comprising the steps of:
the method comprises the following steps: covering a sealing plate (1) on the opening side of the compressor bin, and attaching a sealing ring (101) to the outer wall of the refrigerator shell;
step two; the connecting pipe (2) is rotated, and the extrusion rod (4) is pushed through the connecting rod (5); the extrusion rod (4) pushes the compression rod (3) through a spring (301), and the upper surface of the extrusion rod (4) is matched with the pressing block (302), so that one end, far away from the extrusion rod (4), of the pressing block (302) is pressed on the inner wall of the refrigerator shell;
step three: connecting the gas pipe of the mass spectrometer with the connecting pipe (2), and starting gas extraction detection;
step four: after the detection is finished, the pawl (102) is rotated and separated from the ratchet wheel (201); the connecting pipe (2) is reversed, so that the pressing rod (3) and the extrusion rod (4) are reset; the sealing plate (1) is detached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011233428.2A CN112414628B (en) | 2020-11-06 | 2020-11-06 | Refrigerator refrigerant leakage detection device and detection method |
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| CN202011233428.2A CN112414628B (en) | 2020-11-06 | 2020-11-06 | Refrigerator refrigerant leakage detection device and detection method |
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| CN112414628A true CN112414628A (en) | 2021-02-26 |
| CN112414628B CN112414628B (en) | 2023-02-10 |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5272963A (en) * | 1975-12-12 | 1977-06-18 | Daikin Ind Ltd | Leakage test method for absorving type refrigerator |
| JPS60244830A (en) * | 1984-05-21 | 1985-12-04 | Hitachi Ltd | System for detecting leakage of sodium |
| FR2568523A1 (en) * | 1984-08-03 | 1986-02-07 | Blond Baudouin | Device for locking and opening vehicle body disconnectable and sliding panels |
| DE3841487A1 (en) * | 1988-12-09 | 1990-06-13 | Integral Technologie Gmbh | Refrigerating machine |
| JP2000265718A (en) * | 1999-03-16 | 2000-09-26 | Okamura Corp | Lock device of door in furniture |
| JP2010060410A (en) * | 2008-09-03 | 2010-03-18 | Suzuki Giken:Kk | Leak point detector |
| CN201771546U (en) * | 2010-09-09 | 2011-03-23 | 西安东风仪表厂 | Sealing door |
| CN102418469A (en) * | 2011-10-27 | 2012-04-18 | 中煤科工集团重庆研究院 | Airtight blast door for underground refuge chamber |
| CN104120928A (en) * | 2014-08-11 | 2014-10-29 | 南京军理智能科技股份有限公司 | Civil air defense protective door locking device |
| CN104453496A (en) * | 2014-10-17 | 2015-03-25 | 北京航天益森风洞工程技术有限公司 | Hand-operated tunnel door structure of test section |
| CN204807286U (en) * | 2015-07-23 | 2015-11-25 | 广西防城港核电有限公司 | Condenser heat exchange tube leak hunting device and gas delivery cover thereof |
| CN206038242U (en) * | 2016-08-29 | 2017-03-22 | 东方电气(广州)重型机器有限公司 | Helium leak test sealing device for steam generator |
| CN109538081A (en) * | 2018-11-22 | 2019-03-29 | 贵州大学 | A kind of door body mounting structure of refuge chamber anti-gas-leak |
| CN209538937U (en) * | 2018-12-11 | 2019-10-25 | 天仁民防建筑工程设计有限公司 | Driving assembly, four-way telescoping mechanism and protection airtight door latch apparatus |
| CN210622548U (en) * | 2019-07-09 | 2020-05-26 | 武邑鑫瑞金属制品有限公司 | Three-direction round vault door pressing device |
| CN111572706A (en) * | 2020-05-15 | 2020-08-25 | 中国船舶科学研究中心 | A automatic hatch board of opening and close for wet conversion cabin is done in deep sea |
-
2020
- 2020-11-06 CN CN202011233428.2A patent/CN112414628B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5272963A (en) * | 1975-12-12 | 1977-06-18 | Daikin Ind Ltd | Leakage test method for absorving type refrigerator |
| JPS60244830A (en) * | 1984-05-21 | 1985-12-04 | Hitachi Ltd | System for detecting leakage of sodium |
| FR2568523A1 (en) * | 1984-08-03 | 1986-02-07 | Blond Baudouin | Device for locking and opening vehicle body disconnectable and sliding panels |
| DE3841487A1 (en) * | 1988-12-09 | 1990-06-13 | Integral Technologie Gmbh | Refrigerating machine |
| JP2000265718A (en) * | 1999-03-16 | 2000-09-26 | Okamura Corp | Lock device of door in furniture |
| JP2010060410A (en) * | 2008-09-03 | 2010-03-18 | Suzuki Giken:Kk | Leak point detector |
| CN201771546U (en) * | 2010-09-09 | 2011-03-23 | 西安东风仪表厂 | Sealing door |
| CN102418469A (en) * | 2011-10-27 | 2012-04-18 | 中煤科工集团重庆研究院 | Airtight blast door for underground refuge chamber |
| CN104120928A (en) * | 2014-08-11 | 2014-10-29 | 南京军理智能科技股份有限公司 | Civil air defense protective door locking device |
| CN104453496A (en) * | 2014-10-17 | 2015-03-25 | 北京航天益森风洞工程技术有限公司 | Hand-operated tunnel door structure of test section |
| CN204807286U (en) * | 2015-07-23 | 2015-11-25 | 广西防城港核电有限公司 | Condenser heat exchange tube leak hunting device and gas delivery cover thereof |
| CN206038242U (en) * | 2016-08-29 | 2017-03-22 | 东方电气(广州)重型机器有限公司 | Helium leak test sealing device for steam generator |
| CN109538081A (en) * | 2018-11-22 | 2019-03-29 | 贵州大学 | A kind of door body mounting structure of refuge chamber anti-gas-leak |
| CN209538937U (en) * | 2018-12-11 | 2019-10-25 | 天仁民防建筑工程设计有限公司 | Driving assembly, four-way telescoping mechanism and protection airtight door latch apparatus |
| CN210622548U (en) * | 2019-07-09 | 2020-05-26 | 武邑鑫瑞金属制品有限公司 | Three-direction round vault door pressing device |
| CN111572706A (en) * | 2020-05-15 | 2020-08-25 | 中国船舶科学研究中心 | A automatic hatch board of opening and close for wet conversion cabin is done in deep sea |
Non-Patent Citations (3)
| Title |
|---|
| 任爱梅 等: "冰箱制冷系统焊接缺陷在线检漏技术改进", 《家电科技》 * |
| 吴孝俭 等: "《泄漏检测》", 31 March 2005, 机械工业出版社 * |
| 娄钧仁 等: "电冰箱压缩机泄漏试验与分析", 《家用电器科技》 * |
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| CN112414628B (en) | 2023-02-10 |
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