CN112393856B - Refrigerator refrigerant leakage detection device and using method thereof - Google Patents
Refrigerator refrigerant leakage detection device and using method thereof Download PDFInfo
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- CN112393856B CN112393856B CN202011395039.XA CN202011395039A CN112393856B CN 112393856 B CN112393856 B CN 112393856B CN 202011395039 A CN202011395039 A CN 202011395039A CN 112393856 B CN112393856 B CN 112393856B
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- suction pipe
- air suction
- proximity switch
- mass spectrometer
- sliding ring
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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
- G01M3/22—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 for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/223—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 for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for pipe joints or seals
Abstract
The invention discloses a refrigerator refrigerant leakage detection device and a use method thereof, and relates to the technical field of refrigerator production. The invention comprises an air suction pipe; two baffle rings are fixed on the outer wall of the air suction pipe; one end of the air suction pipe is fixed with a proximity switch; the baffle ring close to the end part of the air suction pipe is provided with symmetrically arranged rectangular notches; the outer wall of the air suction pipe is sleeved with a sliding ring and a spring; the sliding ring and the spring are both positioned between the two retaining rings, and the spring is positioned on one side of the sliding ring away from the proximity switch; the sliding ring is connected with two guide rods matched with the rectangular notches; a supporting block is fixed at the end part of the guide rod; a limiting groove is formed in the side surface of the supporting block; the proximity switch is connected with a control unit; the control unit is used for controlling the start and stop of the mass spectrometer according to the trigger signal of the proximity switch. According to the mass spectrometer, the air suction pipe and the supporting block are arranged, so that the fast positioning of the butt welding point is realized, the start and stop of the mass spectrometer are triggered through the proximity switch, and the problems that the existing manual detection is poor in accuracy and affects the detection efficiency are solved.
Description
Technical Field
The invention belongs to the technical field of refrigerator production, and particularly relates to a refrigerator refrigerant leakage detection device and a use method thereof.
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 or an ice chest, a compressor, a condenser and other refrigeration elements are welded and connected through metal pipelines, after refrigerants are filled into the refrigeration elements and the pipelines, the risk of leakage from welding positions possibly exists due to welding and sealing reasons of the welding positions, and therefore refrigerant leakage detection is needed to be carried out on the welding positions in the compressor bin.
At present, the refrigerant leakage 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 detection head. Firstly, a worker places a detection head at a point to be detected, such as a welding point between pipelines, the distance between the detection head and the welding point is required to be within 10mm, when the detection head is opened, the detection head automatically sucks air for 2-3 seconds, the air around the welding point is sucked into a mass spectrometry chamber through an air pipe, mass spectrometry is carried out after ionization by a molecular pump, and when a specific molecular weight occurs, a safety alarm is given out by the mass spectrometry, and the worker is prompted that a refrigerant leaks from the welding point. And circulating the steps until all welding points are subjected to leak detection.
In conclusion, it can be found that refrigerant leak detection has high requirements on workers, including mastering the distance between the air suction pipe and the welding point and mastering the time for keeping the air suction state for 2-3 seconds, and when manual detection is performed, the distance cannot be kept unchanged by holding, so that the detection accuracy is not guaranteed, and if the distance exceeds the range in the detection process, re-detection is required, and the overall detection efficiency is seriously affected.
Disclosure of Invention
The invention aims to provide a refrigerator refrigerant leakage detection device, which is characterized in that a suction pipe and a supporting block are arranged, so that the fast positioning of a butt welding point is realized, the start and stop of a mass spectrum analyzer are triggered through a proximity switch, and the problems of poor accuracy and influence on detection efficiency of the conventional manual detection 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 leakage detection device, which comprises an air suction pipe; the outer wall of the air suction pipe is fixedly connected with two baffle rings; one end of the air suction pipe is connected with an air pipe of the mass spectrometer, and the other end of the air suction pipe is fixedly connected with a proximity switch;
the side surface of the periphery of the baffle ring close to the end part of the air suction pipe is provided with rectangular notches which are symmetrically arranged; the outer wall of the air suction pipe is sleeved with a sliding ring and a spring; the sliding ring and the spring are both positioned between the two retaining rings, and the spring is positioned on one side of the sliding ring, which is far away from the proximity switch;
the sliding ring is fixedly connected with two guide rods; the guide rod is matched with the rectangular notch; the end part of the guide rod is fixedly connected with a supporting block; a limiting groove is formed in the side surface of the supporting block;
the proximity switch is connected with a control unit; the control unit is used for controlling the start and stop of the mass spectrometer according to the trigger signal of the proximity switch.
Further, the proximity switch is located inside the suction tube.
Further, the supporting block is made of rubber or nylon.
Furthermore, the side surface of the guide rod is provided with scales along the length direction.
Furthermore, the guide rod sleeve is provided with a sliding sleeve; threaded holes are formed in the side wall of the sliding sleeve, and screws are connected to the side wall of the sliding sleeve in a threaded mode.
A method for using a refrigerator refrigerant leakage detection device comprises the following steps:
the method comprises the following steps: the two supporting blocks are abutted against the outer wall of the pipeline to be tested and are respectively positioned on two sides of a pipeline welding point;
step two: the air suction pipe is axially pressed, so that the proximity switch is gradually close to the pipeline to be tested until the proximity switch is triggered, the position of the air suction pipe is kept, the proximity switch is kept in a triggered state, and the control unit starts the mass spectrometer according to a trigger signal of the proximity switch;
step three: after the detection is finished, the air suction pipe is lifted, and when the proximity switch is far away from the pipeline to be detected and the triggering is lost, the control unit controls the mass spectrometer to stop;
step four: and moving the air suction pipe to the next pipeline welding point, and repeating the steps.
The invention has the following beneficial effects:
the invention realizes the support of the air suction pipe through the support block on the air suction pipe, improves the positioning of a butt welding point, simultaneously realizes the start-stop control of the mass spectrum analyzer by utilizing the proximity switch, and effectively improves the position accuracy during detection and the integral detection efficiency.
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 leakage detection apparatus according to the present invention;
FIG. 2 is a schematic view of the suction duct;
FIG. 3 is a schematic view of a slip ring;
in the drawings, the components represented by the respective reference numerals are listed below:
1-air suction pipe, 2-proximity switch, 3-sliding ring, 4-spring, 5-sliding sleeve, 101-baffle ring, 102-rectangular notch, 301-guide rod, 302-supporting block, 303-limiting groove, 304-scale and 501-screw.
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 relates to a refrigerator refrigerant leakage detecting device, which comprises a suction pipe 1; two baffle rings 101 are welded on the outer wall of the air suction pipe 1; one end of the air suction pipe 1 is connected with an air pipe of the mass spectrometer, and the other end of the air suction pipe is fixedly connected with a proximity switch 2. Wherein, proximity switch 2 is located breathing pipe 1 inside, 1 inner wall welded connection ear of breathing pipe, and proximity switch 2 passes through the nut and realizes fixed connection with the engaging ear. Install proximity switch 2 inside breathing pipe 1, can effectually prevent to cause the collision to proximity switch 2 in the use, and lead to proximity switch 2 to damage, influence its life's the condition emergence.
The peripheral side of the baffle ring 101 near the end of the air suction pipe 1 is provided with symmetrically arranged rectangular notches 102, and the two rectangular notches 102 are positioned on the same diameter of the baffle ring 101. The outer wall of the air suction pipe 1 is sleeved with a sliding ring 3 and a spring 4; the sliding ring 3 and the spring 4 are both located between the two blocking rings 101, and the spring 4 is located on the side of the sliding ring 3 away from the proximity switch 2.
As shown in fig. 3, the slide ring 3 is welded or screwed with two guide rods 301; the guide rod 301 is matched with the rectangular notch 102; the end part of the guide rod 301 is fixedly connected with a supporting block 302; the supporting shoe 302 side is seted up spacing groove 303. The supporting shoe 302 is rubber material or nylon material, reducible and compressor storehouse interior pipeline collision within a definite time, avoids causing the condition of pipeline damage to appear, and spacing groove 303 is the V-arrangement structure.
Meanwhile, scales 304 are arranged on the side face of the guide rod 301 along the length direction, so that the distance between the end part of the air suction pipe 1 and the supporting block 302 can be conveniently determined, and the distance between the proximity switch 2 and a pipeline to be tested can be effectively mastered.
Moreover, the guide rod 301 is sleeved with the sliding sleeve 5; the side wall of the sliding sleeve 5 is provided with a threaded hole, and is in threaded connection with a screw 501, the position of the sliding sleeve 5 on the guide rod 301 is adjusted, and the screw 501 is used for fixing the position, so that the moving distance of the sliding ring 3 is limited.
The proximity switch 2 is connected with a control unit; the control unit is used for controlling the start and stop of the mass spectrometer according to the trigger signal of the proximity switch 2.
A method for using a refrigerator refrigerant leakage detection device comprises the following steps:
the method comprises the following steps: the two supporting blocks 302 are abutted against the outer wall of the pipeline to be tested, and the two supporting blocks 302 are respectively positioned on two sides of the pipeline welding point, so that the pipe orifice of the air suction pipe 1 corresponds to the pipeline welding point position.
Step two: the air suction pipe 1 is pressed axially, so that the proximity switch 2 is gradually close to the pipeline to be tested until the proximity switch 2 is triggered, and the proximity switch 2 is kept in a triggered state.
Meanwhile, the sliding ring 3 moves in the pressing process, when the sliding sleeve 5 on the guide rod 301 abuts against the side face of the baffle ring 101, the sliding ring 3 cannot move, namely the air suction pipe 1 cannot be pressed towards the direction of the pipeline to be detected, so that the position of the air suction pipe 1 is kept, the distance between the air suction pipe 1 and the welding point of the pipeline to be detected is limited, the detection position is kept accurate, the proximity switch 2 feeds a trigger signal back to the control unit, and the control unit starts the mass spectrometer according to the trigger signal of the proximity switch 2; the mass spectrometer is started and aspiration is started so that air in the vicinity of the welding point is aspirated by the aspiration tube 1 and is analyzed and detected by the mass spectrometer.
Step three: after the detection is finished, the air suction pipe 1 is lifted, and when the proximity switch 2 is far away from the pipeline to be detected and the triggering is lost, the control unit controls the mass spectrometer to stop.
Step four: and moving the air suction pipe 1 to the next pipeline welding point, and repeating the steps.
The mass spectrometer is controlled to start and stop by the proximity switch 2, and meanwhile, the distance between the port of the air suction pipe 1 and the welding point of the pipeline to be detected is accurately positioned by the sliding sleeve 5 sleeved on the guide rod 301, for example, the distance is within 10mm, so that the position accuracy is conveniently kept when an operator manually detects the position, the detection consistency is improved, the operation of the operator is simple, the requirement on the proficiency of the operator is low, the use is convenient, and the overall detection efficiency is effectively improved.
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 leakage detection device is characterized in that: comprises an air suction pipe (1); the outer wall of the air suction pipe (1) is fixedly connected with two baffle rings (101); one end of the air suction pipe (1) is connected with an air pipe of the mass spectrometer, and the other end of the air suction pipe is fixedly connected with a proximity switch (2);
the peripheral side surface of the baffle ring (101) close to the end part of the air suction pipe (1) is provided with rectangular notches (102) which are symmetrically arranged; the outer wall of the air suction pipe (1) is sleeved with a sliding ring (3) and a spring (4); the sliding ring (3) and the spring (4) are both positioned between the two retaining rings (101), and the spring (4) is positioned on one side of the sliding ring (3) far away from the proximity switch (2);
the sliding ring (3) is fixedly connected with two guide rods (301); the guide rod (301) is matched with the rectangular notch (102); the end part of the guide rod (301) is fixedly connected with a supporting block (302); a limiting groove (303) is formed in the side surface of the supporting block (302);
scales (304) are arranged on the side surface of the guide rod (301) along the length direction; the guide rod (301) is sleeved with a sliding sleeve (5); a threaded hole is formed in the side wall of the sliding sleeve (5), and a screw (501) is connected with the side wall of the sliding sleeve in a threaded manner;
the proximity switch (2) is connected with a control unit; the control unit is used for controlling the start and stop of the mass spectrometer according to the trigger signal of the proximity switch (2).
2. The refrigerant leakage detecting device for a refrigerator according to claim 1, wherein the proximity switch (2) is located inside the suction pipe (1).
3. The refrigerant leakage detecting device for a refrigerator as claimed in claim 1, wherein said supporting block (302) is made of rubber or nylon.
4. A method for using the refrigerant leakage detecting device for a refrigerator according to any one of claims 1 to 3, comprising the steps of:
the method comprises the following steps: the two supporting blocks (302) are abutted against the outer wall of the pipeline to be tested, and the two supporting blocks (302) are respectively positioned on two sides of the pipeline welding point;
step two: the method comprises the following steps that the air suction pipe (1) is axially pressed, so that the proximity switch (2) is gradually close to a pipeline to be tested until the proximity switch (2) is triggered, the position of the air suction pipe (1) is kept, the proximity switch (2) is kept in a triggered state, and the control unit starts the mass spectrometer according to a trigger signal of the proximity switch (2);
step three: after the detection is finished, the air suction pipe (1) is lifted, and when the proximity switch (2) is far away from the pipeline to be detected and is not triggered, the control unit controls the mass spectrometer to stop;
step four: and moving the air suction pipe (1) to the next pipeline welding point, and repeating the steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011395039.XA CN112393856B (en) | 2020-12-03 | 2020-12-03 | Refrigerator refrigerant leakage detection device and using method thereof |
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| CN202011395039.XA CN112393856B (en) | 2020-12-03 | 2020-12-03 | Refrigerator refrigerant leakage detection device and using method thereof |
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| CN112393856A CN112393856A (en) | 2021-02-23 |
| CN112393856B true CN112393856B (en) | 2022-05-10 |
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