CN112254889A

CN112254889A - Rotary compressor leak detection device and leak detection method thereof

Info

Publication number: CN112254889A
Application number: CN202011269721.4A
Authority: CN
Inventors: 王小平; 张青; 尹伟锋; 孙贤初
Original assignee: Bitzer Rotary Compressor Jiangsu Co ltd
Current assignee: Bitzer Rotary Compressor Jiangsu Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-01-22

Abstract

The invention provides a rotary compressor leak detection device, which comprises a leak detection water tank, a test solvent quantifying mechanism and a test gas quantifying mechanism, wherein the test solvent quantifying mechanism is arranged at the upper right part of the leak detection water tank; in case the compressor leaks during the leak hunting, then fill into the high-pressure gas of compressor kind and take carbon dioxide to get into in the leak hunting basin and meet with the litmus that dissolves in the leak hunting basin, the water in the leak hunting basin takes place the color change, becomes red by purple, causes the leak source to expose easily and perceives, makes things convenient for the quick accuracy of workman's naked eye to discern the leakage.

Description

Rotary compressor leak detection device and leak detection method thereof

Technical Field

The invention discloses a rotary compressor leakage detection device and a leakage detection method thereof, and belongs to the technical field of rotary compressor leakage detection.

Background

The rotary compressor is a new type of compressor, and its motor does not need to convert the rotary motion of rotor into reciprocating motion of piston, but directly drives the rotary piston to make rotary motion to complete the compression of refrigerant vapor. The air compressor is more suitable for small air conditioners, and particularly has wider application on household air conditioners. For example, rotary air compressors manufactured by U.S. general electric and vopp have been designed with better anti-overheating and lubrication devices. It adopts the cooling mode of leading part of refrigerant liquid in condenser to compression chamber by using pipe to make it be injected in cylinder, so that its cooling effect can be raised. As shown in fig. 2 of the specification, the conventional rotary compressor 9 generally plugs the air outlet 91, then connects a rubber hose of the air inlet 92 with a high-pressure air inlet device, and detects the tightness of the compressor by using bubbles in a water immersion manner within a certain air pressure.

The existing compressor complete machine sealing performance adopts a high-pressure water detection mode to judge a compressor leakage point by identifying a high-pressure gas leakage bubble through naked eyes, but because the bubble is colorless, the leakage detection process of the compressor has dead corners and tiny leakage which is not easy to be perceived manually, and the naked eyes of people are easy to fatigue after long-term observation, so that the leakage point has no risk of being identified, so that tiny leakage flows out every year to cause customer complaints, and a rotary compressor leakage detection device and a leakage detection method thereof are urgently needed to solve the problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a rotary compressor leakage detection device and a leakage detection method thereof, which are used for solving the problems in the background art.

In order to achieve the purpose, the invention is realized by the following technical scheme: a leakage detection device of a rotary compressor comprises a leakage detection water tank, a test solvent quantifying mechanism and a test gas quantifying mechanism, wherein the test solvent quantifying mechanism is arranged at the upper right part of the leakage detection water tank;

the device comprises a litmus box, an electromagnetic flowmeter is arranged at an outlet of the litmus box, an electromagnetic valve is connected at the outlet of the electromagnetic flowmeter, an outlet of the electromagnetic valve is connected with a lead-out pipe, a hollowed-out pipe is arranged at a position, close to the outlet of the lead-out pipe, on the inner wall of a leak detection water tank, and a stirrer is arranged in the hollowed-out pipe;

the test gas quantifying mechanism is used for quantitatively conveying carbon dioxide and comprises a high-pressure pump, wherein a gas inlet of the high-pressure pump is connected with a gas flowmeter, a gas outlet of the high-pressure pump is connected with a gas storage pipe, a barometer is arranged on the gas storage pipe in a penetrating mode, a gas outlet nozzle is arranged at the outlet of the gas storage pipe and is connected with the gas inlet end of the rotary compressor.

The liquid level sensor, the barometer, the electromagnetic flow meter and the gas flow meter are connected with the input end of the single chip microcomputer, and the output end of the single chip microcomputer is connected with the electromagnetic valve and the high-pressure pump.

Further, the inside downside of leak hunting basin is provided with installation mechanism, installation mechanism includes fixing base and butterfly bolt, butterfly bolt screw thread closes in the four corners department of fixing base up end.

Furthermore, leak hunting basin upside is connected with visual apron through the hinge rotation, the faucet has been seted up to the terminal surface before the leak hunting basin, the inner wall side of leak hunting basin still is marked with the water level scale.

Further, the inside toughened glass board that sets up of visual apron, visual apron front side is provided with snap, visual apron passes through snap and is connected with the leak hunting basin, the marginal part of visual apron lower extreme face is pasted and is had the silica gel pad.

Furthermore, the left side of the hollow pipe is hollow, an inlet is formed in the upper end of the hollow pipe in a penetrating mode, and the inlet and the outlet of the eduction tube are located on the same vertical line.

Further, the stirrer comprises a motor and a propeller connected to a power shaft of the motor.

Furthermore, the upper side of the litmus box is provided with an injection port.

The invention provides a leak detection method provided by a rotary compressor leak detection device, which comprises the following steps:

step one, installing and fixing a rotary compressor: the hasp is opened, the visual cover plate is turned over and opened, the butterfly bolt on the fixed seat is screwed off, the rotary compressor is placed on the fixed seat, the butterfly bolt penetrates through an installation station hole of the rotary compressor and is screwed and connected with the thread of the fixed seat, the air outlet nozzle is connected with the air inlet end of the rotary compressor, and the air outlet end of the rotary compressor is plugged;

step two, water injection: the water pump is electrified, the water inlet end of the water pump is connected with an external water source, the water pump is electrified to work to inject water into the leakage detection water tank, the water level in the leakage detection water tank is observed, and the water pump is powered off after the rotary compressor is submerged;

step three, mixing litmus solution: the litmus box is filled with litmus concentrated liquid along the filling opening, the liquid level sensor transmits water level data to the single chip microcomputer, the single chip microcomputer is compared with preset discharge flow parameters (100 parts of water: 1 part of litmus concentrated liquid), the electromagnetic flowmeter is controlled to be opened, meanwhile, the electromagnetic valve is opened, after the electromagnetic flowmeter transmits the litmus concentrated liquid with corresponding flow parameters, the single chip microcomputer controls the electromagnetic valve to be closed, the litmus concentrated liquid is led out along the leading-out pipe to enter the hollow pipe, and the stirrer in the hollow pipe is electrified to stir and mix the litmus concentrated liquid and the water;

step four, quantitatively conveying carbon dioxide gas: after a period of time after the third step is finished, the singlechip controls the high-pressure pump and the gas flowmeter to be opened, carbon dioxide gas prepared in advance is conveyed to the gas flowmeter, the gas flowmeter conveys the carbon dioxide gas to the high-pressure pump, then the carbon dioxide gas enters the gas storage pipe and then enters the gas inlet end of the rotary compressor along the gas outlet nozzle, meanwhile, the gas outlet end of the rotary compressor is blocked, when the barometer is larger than or equal to a preset gas pressure value in the singlechip, the singlechip controls the high-pressure pump and the gas flowmeter to be closed, otherwise, the operation is continued;

step five, rotary compressor leak detection: when air leakage occurs in the rotary compressor, the purple litmus solution turns red by utilizing the principle that carbon dioxide reacts with the litmus solution to turn red, and when the rotary compressor is good in sealing performance, the purple litmus solution does not change color.

The invention has the beneficial effects that:

according to the invention, certain colorless carbon dioxide gas is mixed into high-pressure air for leak detection, another colorless soluble litmus reagent is added into a leak detection water tank, and water can change color after the two colorless reagents meet in the water; when the leakage detection is carried out, once the rotary compressor leaks, high-pressure gas filled into the rotary compressor carries carbon dioxide to enter the leakage detection water tank to meet with litmus dissolved in the leakage detection water tank, and water in the leakage detection water tank changes color and changes from purple to red, so that leakage points are easy to expose and detect, and workers can conveniently and accurately identify leakage by naked eyes;

a control mechanism is added in the invention, the control mechanism is a singlechip, a liquid level sensor, a barometer, an electromagnetic flowmeter and a gas flowmeter are connected with the input end of the singlechip, and the output end of the singlechip is connected with an electromagnetic valve and a high-pressure pump and is used for automatically controlling the litmus to carry out proportioning concentration, automatically controlling carbon dioxide gas and controlling input air pressure;

the lower side in the leak detection water tank is provided with an installation mechanism, the installation mechanism comprises a fixed seat and butterfly bolts, and the butterfly bolts are screwed at four corners of the upper end face of the fixed seat in a threaded manner and are used for fixedly installing a rotary compressor.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of a rotary compressor leak detection apparatus and a leak detection method thereof according to the present invention;

FIG. 2 is a cross-sectional view of a rotary compressor leak detection apparatus and method of the present invention;

FIG. 3 is a schematic diagram of a control mechanism in a rotary compressor leak detection apparatus and a leak detection method thereof according to the present invention;

in the figure: the device comprises a leakage detection water tank 1, a visual cover plate 2, a toughened glass plate 21, a silica gel pad 22, a litmus box 3, an electromagnetic valve 31, a 32 leading-out pipe 33, an electromagnetic flow meter 33, a hollow-out pipe 34, a stirrer 35, a high-pressure pump 4, a barometer 41, a gas storage pipe 42, a gas flow meter 43, a gas outlet nozzle 44, a water outlet nozzle 5, a hasp 6, a liquid level sensor 7, a fixed seat 8, a butterfly bolt 81, a rotary compressor 9, a rotary compressor gas outlet end 91, a rotary compressor gas inlet end 92, a water pump 10 and an LED lamp strip 11.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a rotary compressor leak hunting device, including leak hunting basin 1, test solvent ration mechanism and test gas ration mechanism, test solvent ration mechanism sets up the upper right side at leak hunting basin 1, test gas ration mechanism sets up the right side below at leak hunting basin 1, leak hunting basin 1 left side water inlet department installs water pump 10, it has LED lamp area 11 to paste on leak hunting basin 1 inner wall upside, LED lamp area 11 is used for the illumination of more clarity, level sensor 7 is installed to leak hunting basin 1 inner wall downside, level sensor 7 is DATA-51 static pressure level sensor, a water inflow for receiving water pump 10, the obscure problem of original rotary compressor leak hunting device detection effect has been solved.

The solvent quantitative testing mechanism is used for performing concentration proportioning on litmus and comprises a litmus box 3, an electromagnetic flowmeter 33 which is a split type electromagnetic flowmeter is arranged at an outlet of the litmus box 3, an electromagnetic valve 31 is connected at the outlet of the electromagnetic flowmeter 33, an outlet of the electromagnetic valve 31 is connected with an outlet pipe 32, a hollowed pipe 34 is arranged on the inner wall of the leak detection water tank 1 and close to the outlet of the outlet pipe 32, a stirrer 35 is installed in the hollowed pipe 34, when litmus concentrated liquid enters the hollowed pipe 34, the stirrer 35 in the hollowed pipe 34 fully mixes the litmus with water, and the litmus is quickly diluted and uniformly mixed.

The test gas quantitative mechanism is used for quantitatively conveying carbon dioxide gas and comprises a high-pressure pump 4, wherein a gas flow meter 43 which is an QZL series gas flow meter is connected to a gas inlet of the high-pressure pump 4, a gas storage pipe 42 is connected to a gas outlet of the high-pressure pump 4, a barometer 41 which is a TQ2WS-7000A type electronic barometer is arranged on the gas storage pipe 42 in a penetrating mode, a gas outlet 44 is arranged at the outlet of the gas storage pipe 42, and the gas outlet 44 is connected with a gas inlet end 92 of a rotary compressor.

The invention also comprises a control mechanism which is a singlechip, wherein the liquid level sensor 7, the barometer 41, the electromagnetic flowmeter 33 and the gas flowmeter 43 are connected with the input end of the singlechip, and the output end of the singlechip is connected with the electromagnetic valve 31 and the high-pressure pump 4 and is used for automatically controlling the litmus to carry out proportioning concentration, automatically controlling the carbon dioxide gas and controlling the input air pressure.

The lower side in the leak detection water tank 1 is provided with an installation mechanism, the installation mechanism comprises a fixed seat 8 and butterfly bolts 81, and the butterfly bolts 81 are screwed at the four corners of the upper end surface of the fixed seat 8 in a threaded manner and are used for fixedly installing a rotary compressor 9.

The upper side of the leak detection water tank 1 is rotatably connected with the visual cover plate 2 through the hinge, visual operation is facilitated, the water outlet nozzle 5 is arranged on the front end face of the leak detection water tank 1 and used for discharging litmus concentrated liquid, water level scales are engraved on the inner wall side of the leak detection water tank 1, and water injection quantity of the water pump 10 is conveniently controlled.

According to the invention, the toughened glass plate 21 is arranged in the visual cover plate 2, so that visual operation is facilitated, the spring hasp 6 is arranged on the front side of the visual cover plate 2, the visual cover plate 2 is connected with the leakage detection water tank 1 through the spring hasp 6, so that the visual cover plate 2 is locked conveniently, and the silica gel pad 22 is adhered to the edge part of the lower end face of the visual cover plate 2, so that a certain sealing effect is achieved.

According to the invention, the left side of the hollow pipe 34 is hollow, the upper end of the hollow pipe 34 is provided with an inlet in a penetrating way, the inlet and the outlet of the eduction tube 32 are positioned on the same vertical line, when the concentrated liquid of the litmus enters the hollow pipe 34, the stirrer 35 in the hollow pipe 34 fully mixes the litmus with water, and the litmus is quickly diluted and uniformly mixed.

In addition, the leakage detection method provided by the leakage detection device of the rotary compressor comprises the following steps:

step one, the rotary compressor 9 is installed and fixed: the buckle 6 is opened, the visual cover plate 2 is turned over and opened, the butterfly bolt 81 on the fixed seat 8 is screwed, the rotary compressor 9 is placed on the fixed seat 8, the butterfly bolt 81 penetrates through an installation position hole of the rotary compressor 9 to be screwed and connected with the fixed seat 8 through threads, the air outlet nozzle 44 is connected with the air inlet end 92 of the rotary compressor, and the air outlet end 91 of the rotary compressor is blocked;

step two, water injection: the water pump 10 is powered on, the water inlet end of the water pump 10 is connected with an external water source, the water pump 10 is powered on to work, water is injected into the leak detection water tank 1, the water level in the leak detection water tank 1 is observed, and the water pump 10 is powered off after the rotary compressor 9 is submerged;

step three, mixing litmus solution: the litmus box 3 injects litmus concentrated liquid along the injection port, at the moment, the liquid level sensor 7 transmits water level data to the singlechip, the singlechip compares with preset discharge flow parameters (100 parts of water: 1 part of litmus concentrated liquid), controls the electromagnetic flowmeter 33 to be opened, simultaneously the electromagnetic valve 31 is opened, after the electromagnetic flowmeter 33 transmits the litmus concentrated liquid with corresponding flow parameters, the singlechip controls the electromagnetic valve 31 to be closed, the litmus concentrated liquid is led out along the leading-out pipe 32 to enter the hollow pipe 34, and the stirrer 35 in the hollow pipe 34 is electrified to stir and mix the litmus concentrated liquid and the water;

step four, quantitatively conveying carbon dioxide gas: after a period of time after the third step is completed, the singlechip controls the high-pressure pump 4 and the gas flowmeter 43 to be opened, carbon dioxide gas prepared in advance is conveyed to the gas flowmeter 43, the gas flowmeter 43 conveys the carbon dioxide gas to the high-pressure pump 4, then the carbon dioxide gas enters the gas storage pipe 42, then the carbon dioxide gas enters the gas inlet end of the rotary compressor 9 along the gas outlet nozzle 44, meanwhile, the gas outlet end 91 of the rotary compressor is blocked, when the barometer 41 is greater than or equal to a preset gas pressure value in the singlechip, the singlechip controls the high-pressure pump 4 and the gas flowmeter 43 to be closed, otherwise, the operation is continued;

step five, detecting the leakage of the rotary compressor 9: air leakage appears in the rotary compressor 9, utilizes carbon dioxide and litmus solution reaction to become red principle, and purple litmus solution turns red, and the leakproofness is good in the rotary compressor 9, and purple litmus solution does not discolour, cooperates LED lamp area 11 to be used for clearer illumination in addition.

The leak detection device is reasonable in structure, certain colorless carbon dioxide gas is mixed into high-pressure air for leak detection, another colorless soluble litmus reagent is added into the leak detection water tank 1, and water can change color after the two colorless reagents meet in the water; in case the rotary compressor 9 leaks when the leak hunting, then fill into high-pressure gas in the rotary compressor 9 and take carbon dioxide to get into in the leak hunting basin 1 and meet with the litmus that dissolves in the leak hunting basin 1, the water in the leak hunting basin 1 takes place color change, and purple litmus solution becomes red, causes the leak source to expose easily and perceives, makes things convenient for the quick accurate discernment of workman's naked eye to leak.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a rotary compressor leak hunting device which characterized in that: the device comprises a leak detection water tank, a test solvent quantifying mechanism and a test gas quantifying mechanism, wherein the test solvent quantifying mechanism is arranged at the upper right part of the leak detection water tank, the test gas quantifying mechanism is arranged at the lower right part of the leak detection water tank, a water pump is arranged at a water inlet at the left side of the leak detection water tank, an LED lamp strip is adhered to the upper side of the inner wall of the leak detection water tank, and a liquid level sensor is arranged at the lower side of the inner wall of the leak detection;

2. A rotary compressor leak detection apparatus according to claim 1, wherein: the liquid level sensor, the barometer, the electromagnetic flow meter and the gas flow meter are connected with the input end of the single chip microcomputer, and the output end of the single chip microcomputer is connected with the electromagnetic valve and the high-pressure pump.

3. A leak detection apparatus for a rotary compressor and a leak detection method therefor according to claim 1, wherein: the inside downside of leak hunting basin is provided with installation mechanism, installation mechanism includes fixing base and butterfly bolt, butterfly bolt screw thread is twisted and is closed in the four corners department of fixing base up end.

4. A leak detection apparatus for a rotary compressor and a leak detection method therefor according to claim 1 or 3, wherein: the leak hunting basin upside is connected with visual apron through the hinge rotation, the faucet has been seted up to the terminal surface before the leak hunting basin, the inner wall side of leak hunting basin still is marked with the water level scale.

5. A leak detection apparatus for a rotary compressor and a leak detection method therefor according to claim 4, wherein: the improved leak detection device is characterized in that a toughened glass plate is arranged inside the visual cover plate, a spring hasp is arranged on the front side of the visual cover plate, the visual cover plate is connected with the leak detection water tank through the spring hasp, and a silica gel pad is pasted on the edge part of the lower end face of the visual cover plate.

6. A leak detection apparatus for a rotary compressor and a leak detection method therefor according to claim 1, wherein: the hollow pipe is hollow on the left side, an inlet is formed in the upper end of the hollow pipe in a penetrating mode, and the inlet and the outlet of the outlet pipe are located on the same vertical line.

7. A leak detection apparatus for a rotary compressor and a leak detection method therefor according to claim 1, wherein: the stirrer comprises a motor and a propeller connected to a power shaft of the motor.

8. A leak detection apparatus for a rotary compressor and a leak detection method therefor according to claim 1, wherein: and the upper side of the litmus box is provided with an injection port.

9. A leak detection method provided by a leak detection apparatus for a rotary compressor according to claims 1 to 8, wherein: the method comprises the following steps:

step three, mixing litmus solution: the litmus box is filled with litmus concentrated liquid along the filling opening, at the moment, the liquid level sensor transmits water level data to the single chip microcomputer, the single chip microcomputer is compared with preset discharge flow parameters, the electromagnetic flowmeter is controlled to be opened, meanwhile, the electromagnetic valve is opened, after the electromagnetic flowmeter transmits the litmus concentrated liquid with corresponding flow parameters, the single chip microcomputer controls the electromagnetic valve to be closed, the litmus concentrated liquid is led out along the leading-out pipe to enter the hollow pipe, and the stirrer in the hollow pipe is electrified to stir and mix the litmus concentrated liquid and water;