CN111458229A - Pressure resistance measuring device of compressor shell and control method - Google Patents

Abstract

The invention discloses a pressure resistance measuring device of a compressor casing, comprising a body for placing the compressor casing and a pressure regulating component installed on the body, the pressure regulating component comprising a triplet, a solenoid valve, an electrical A converter, a gas-liquid booster pump, a one-way valve and a pressure relief valve, one end of the solenoid valve is communicated with the triplet, the other end of the solenoid valve is communicated with the electrical converter, and the gas-liquid booster is connected to the electric converter. The control end of the pressure pump is connected to the electrical converter, the output end of the gas-liquid booster pump is communicated with the input end of the one-way valve, and the output end of the one-way valve is respectively connected with the pressure relief valve and the The compressor casing is in communication. The invention can accurately detect whether the compressive strength of the compressor shell meets the design requirements, so as to accurately check the material thickness of the compressor shell and the quality of welding, and does not need to measure different parts of the compressor shell multiple times. In addition, the invention also discloses a control method of the pressure resistance measuring device of the compressor casing.

Description

A pressure-resistant measuring device and control method of a compressor shell

technical field

The invention belongs to the technical field of compressor detection, and in particular relates to a pressure-resistant measuring device and a control method of a compressor casing.

Background technique

Compressor, a fluid machine that compresses gas and increases gas pressure at the same time, is the heart of the refrigeration system. It inhales low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it through the operation of the motor, and discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle. Compressors are divided into piston compressors, screw compressors, centrifugal compressors, linear compressors, etc. The compressor casing should have sufficient mechanical strength. Since the casing and the high-pressure chamber need to withstand the same high-pressure state during the operation of the compressor, there should be a certain safety margin for the thickness of the casing, and the welding parts should also withstand the high pressure. A variety of situations that may arise during abnormal conditions.

The inventor found that the existing method has at least the following defects: visual inspection or Rockwell hardness testing and manual mechanical manual pressing and blasting test are used, and there are relatively large uncertain factors in manual visual inspection. The strength cannot be accurately judged, and the hardness of the Rockwell hardness test has poor repeatability, causing certain damage to the compressor casing, and it needs to be measured several times in different parts, which requires a lot of manpower and time; Mechanical manual pressure blasting has a certain degree of safety, and when the pressure is too high, it is easy to fatigue and cannot continue to pressurize. At the same time, the traditional mechanical booster usually adopts a liquid-liquid booster method, and hydraulic oil is used as the medium. After the shell is blasted, the hydraulic oil will be everywhere. splash, pollute the environment.

SUMMARY OF THE INVENTION

One of the objectives of the present invention is to provide a pressure-resistant measuring device for a compressor casing in view of the deficiencies of the prior art. By using tap water as a medium, the compressor can be automatically measured after setting the required pressure value on the operation panel. The shell is pressurized slowly until it bursts, and there is no need to manually measure different parts of the compressor shell multiple times, which helps to reduce manpower and time, and also avoids the potential safety hazards caused by manual mechanical pressing.

In order to achieve the above object, the present invention adopts the following technical solutions:

A pressure-resistant measuring device for a compressor casing, comprising a body for placing the compressor casing and a pressure regulating assembly installed on the body, the pressure regulating assembly comprising a triplet, a solenoid valve, an electrical converter, a gas A liquid booster pump, a one-way valve and a pressure relief valve, one end of the solenoid valve is communicated with the triplet, and the other end of the solenoid valve is communicated with the electrical converter. The control of the gas-liquid booster pump The output end of the gas-liquid booster pump is connected to the input end of the one-way valve, and the output end of the one-way valve is connected to the pressure relief valve and the compressor casing respectively. body connectivity.

As an improvement of the pressure resistance measuring device of a compressor casing according to the present invention, the casing includes a cavity and a safety door, the cavity is provided with a plurality of openings, and the safety door seals the openings.

As an improvement of the pressure resistance measuring device of the compressor housing according to the present invention, the safety door is a right-angle double-opening safety door, the safety door is hinged to the opening, and an explosion-proof observation window is arranged on the safety door.

As an improvement of the pressure resistance measuring device of the compressor casing according to the present invention, the number of the openings is two, and the included angle between the two openings is a right angle or an obtuse angle.

As an improvement of the pressure-resistant measuring device of the compressor housing according to the present invention, the body is provided with a pressure display device, and the pressure display device includes a pressure gauge and a pressure sensor, and the pressure sensor is arranged near the The pipeline of the compressor casing, the pressure sensor is connected with the pressure gauge.

As an improvement of the pressure-resistant measuring device of the compressor housing according to the present invention, a water tank is provided at the bottom of the body, and the water tank is connected to the input end of the gas-liquid booster pump.

As an improvement of the pressure resistance measuring device of the compressor casing according to the present invention, the input end of the triple piece is connected with a gas source, and the input end of the gas-liquid booster pump is connected with tap water.

As an improvement of the pressure resistance measuring device of the compressor casing of the present invention, the pressure resistance measuring device further includes a control device, and the pressure regulating assembly is connected in communication with the control device.

As an improvement of the pressure-resistant measuring device of the compressor casing of the present invention, the control device is a PLC controller or an embedded controller.

As an improvement of the pressure-resistant measuring device of the compressor casing according to the present invention, the solenoid valve is a two-position three-way solenoid valve.

Another object of the present invention is to provide a control method for a pressure-resistant measuring device of a compressor casing, including:

The triple piece purifies, filters and decompresses the air source to the rated air source pressure. The rated air source pressure passes through the solenoid valve and enters the electrical converter, which controls the control end of the gas-liquid booster pump;

The gas-liquid booster pump fills the compressor shell with tap water, and by adjusting the input pressure of the gas-liquid booster pump, the output pressure of the gas-liquid booster pump is adjusted, that is, the internal pressure of the compressor shell;

The one-way valve discharges the tap water through the pressure relief valve.

The beneficial effect of the present invention is that the present invention includes a body for placing the compressor casing and a pressure regulating assembly installed on the body, and the pressure regulating assembly includes a triplet, a solenoid valve, an electrical converter, and a gas-liquid booster. A pump, a one-way valve and a pressure relief valve, one end of the solenoid valve is communicated with the triplet, the other end of the solenoid valve is communicated with the electrical converter, and the control end of the gas-liquid booster pump is connected to the In the electrical converter, the output end of the gas-liquid booster pump is communicated with the input end of the check valve, and the output end of the check valve is communicated with the pressure relief valve and the compressor housing respectively. Due to the large uncertainty factors in manual visual inspection, the strength of the top cover welding seam and sealing stud welding seam cannot be accurately judged. There is a certain amount of damage, and it needs to be measured several times in different parts, which requires a lot of manpower and time; while using manual machinery to manually press and blast has a certain degree of safety, and when the pressure is too high, it is easy to fatigue and cannot continue to press. The hydraulic pressure is usually liquid-liquid boosting, and hydraulic oil is used as the test medium. After the shell is blasted, the hydraulic oil will splash around and pollute the environment. Therefore, the gas-liquid booster method is adopted, that is, when the compressor casing is filled with water, the required pressure is set through the operation panel, and the system automatically increases the input pressure to the gas-liquid booster pump gradually, so that the booster pump The secondary side is continuously pressurized and the liquid is continuously injected into the compressor shell. The system is equipped with a high-pressure check valve. Under the condition of a certain pressure increase ratio, the internal pressure of the compressor can be gradually increased to the burst pressure; It is used to dry, purify, filter and decompress the air source to the rated air source pressure supplied to the instrument. The rated air source pressure passes through the solenoid valve and enters the electrical converter, and the control end of the gas-liquid booster pump is controlled by the electrical converter, that is, Apply a very low pressure to the large-diameter air-driven piston of the gas-liquid booster pump. When this pressure acts on a small-area piston, a high pressure is generated, which can increase the liquid pressure value in the device. Due to the one-way valve control The high-pressure plunger pump continuously discharges the liquid. The pressure at the output end of the gas-liquid booster pump is related to the air driving pressure. When the pressure between the driving part and the output liquid part reaches equilibrium, the gas-liquid booster pump will stop running. , no longer consumes air, when the output pressure drops or the air driving pressure increases, the gas-liquid booster pump will automatically start and run until it reaches the pressure balance again and stops automatically, that is, the input of the gas-liquid booster pump is controlled by an electrical converter The control end realizes the adjustment of the output pressure of the gas-liquid booster pump, thereby adjusting the pressure inside the shell; among them, when the pressure in the equipment or pipeline exceeds the set pressure of the pressure relief valve, the pressure relief is automatically opened to ensure the internal pressure of the equipment and pipeline. The medium pressure is below the set pressure to protect equipment and pipelines and prevent accidents. The invention can accurately detect the compressive strength of the compressor shell, check whether the wall thickness of the compressor shell meets the expected design through a specific quantitative test, and does not need to measure multiple times on different parts of the compressor shell, which helps to reduce manpower and labor costs. Time, but also avoid the dangers and pollution of the environment faced by mechanical pressing.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the control principle of the present invention.

Among them: 1-triple; 2-solenoid valve; 3-electrical converter; 4-gas-liquid booster pump; 5-check valve; 6-pressure relief valve; 7-cavity; 71-opening; 8-safety door ; 9 - pressure display device.

Detailed ways

As used in the specification and claims, certain terms are used to refer to particular components. It should be understood by those skilled in the art that hardware manufacturers may refer to the same component by different nouns. The description and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As mentioned in the entire specification and claims, "comprising" is an open-ended term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range, and basically achieve technical effects.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", horizontal" etc. is based on the accompanying drawings The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a reference to the present invention. limits.

In the invention, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The present invention will be further described in detail below with reference to the accompanying drawings 1-2, but it is not intended to limit the present invention.

Example 1

A pressure-resistant measuring device for a compressor shell, comprising a body for placing the compressor shell and a pressure regulating component installed on the body, the pressure regulating component comprising a triplet 1, a solenoid valve 2, an electrical converter 3, a gas-liquid The booster pump 4, the one-way valve 5 and the pressure relief valve 6, one end of the solenoid valve 2 is communicated with the triplet 1, the other end of the solenoid valve 2 is communicated with the electrical converter 3, and the control end of the gas-liquid booster pump 4 is connected to the electrical Converter 3, the output end of the gas-liquid booster pump 4 is communicated with the input end of the check valve 5, and the output end of the check valve 5 is communicated with the pressure relief valve 6 and the compressor casing respectively. Due to the large uncertainty factors in manual visual inspection, the strength of the top cover welding seam and sealing stud welding seam cannot be accurately judged. There is a certain amount of damage, and it needs to be measured several times in different parts, which requires a lot of manpower and time; while using manual machinery to manually press and blast has a certain degree of safety, and when the pressure is too high, it is easy to fatigue and cannot continue to press. The pressure is usually liquid-liquid boosting, and hydraulic oil is used as the medium. After the shell is blasted, the hydraulic oil will splash around and pollute the environment. Therefore, the gas-liquid booster method is adopted, that is, when the compressor casing is filled with water, the control system is set to gradually increase the gas pressure to the gas-liquid booster pump, so that the secondary side of the booster pump is continuously compressed. Continue to inject liquid into the casing. Since the system is provided with a high-pressure check valve, the internal pressure of the compressor can be gradually increased to the burst pressure under the condition of a certain booster ratio. Reduce the pressure to the rated air source pressure and enter the solenoid valve 2, and enter the set rated pressure into the electrical converter 3, and control the input end of the gas-liquid booster pump 4 through the electrical converter 3, that is, pressurize the gas-liquid The large-diameter air-driven piston of the pump 4 exerts a very low pressure. When this pressure acts on a small-area piston, a high pressure is generated, which can increase the liquid pressure value in the device. Due to the high-pressure column controlled by the check valve 5 The plug pump continuously discharges the liquid. The pressure at the output end of the gas-liquid booster pump 4 is related to the air driving pressure. When the pressure between the driving part and the output liquid part reaches a balance, the gas-liquid booster pump 4 will stop running. Air is no longer consumed. When the output pressure drops or the air driving pressure increases, the gas-liquid booster pump 4 will automatically start and run until the pressure balance is reached again, that is, the gas-liquid booster pump 4 is controlled by the electrical converter 3. The control end of the compressor can adjust the output pressure of the gas-liquid booster pump 4, thereby controlling the limit pressure inside the compressor shell; when the pressure in the equipment or pipeline exceeds the set pressure of the pressure relief valve, the pressure relief is automatically opened, Ensure that the medium pressure in equipment and pipelines is below the set pressure, protect equipment and pipelines, and prevent accidents.

In this embodiment, the compressor casing is filled with water to remove the air remaining in the casing and the inside of the casing to avoid danger. Taking the compressor casing for R410A refrigerant as an example, set the pressure value on the operation panel. Start the test after setting the pressure holding time to 20Mpa. The pressure regulating component first controls to fill the compressor shell with water and exhaust the residual air, and then automatically converts the rated air pressure required by the 20MPa pressure value according to the set value. The equipment automatically Control and slowly pressurize to the rated air pressure, then the pressure value of the secondary side of the gas-liquid booster pump will also increase slowly with the increase of the air pressure, until the pressure reaches 20Mpa, stop the booster, and wait for the pressure to be maintained until Up to the pressure holding time, when the pressure suddenly drops before the arrival time, it means that the compressive strength of the compressor casing is unqualified. When the pressure holding time is reached, it means that the pressure resistance strength of the compressor casing is qualified, and the compressor casing can be removed by releasing the pressure.

In another example, the compressor housing for R410A refrigerant is still taken as an example, the set pressure value is set as the maximum pressure value of the device, and then the slow speed boost is selected, and the pressure regulating component fills the compressor housing with water. The pressure inside the compressor shell will increase slowly, when it reaches a certain value, the compressor shell will rupture, and the pressure display device 9 will record the value when the compressor shell ruptures. When the rupture pressure value is much greater than the standard required 20Mpa When the compressive strength of the compressor casing is too high, the thickness of the compressor casing can be adjusted to reduce the weight to achieve the effect of reducing weight and saving costs. It shows that the compressive strength of the compressor shell is suitable, and it can be used for the compressor shell of R410A refrigerant.

Preferably, the body includes a cavity 7 and a safety door 8 , the cavity 7 is provided with a plurality of openings 71 , the safety door 8 seals the openings 71 , and an explosion-proof observation window is arranged on the safety door 8 . Multiple openings are provided to facilitate the observation of the state of the test sample from multiple angles. The safety door 8 prevents the pressure in the compressor casing from being too large, causing the water column to splash from the crack to the test site and hurt people.

Preferably, the safety door 8 is a right-angle double-opening safety door, and the safety door 8 is hinged at the opening 71 . Through the right-angle double-opening safety door, it can be ensured that when the compression casing is pressurized, the pressure in the compressor casing is prevented from being too large, causing the water column to splash from the crack to the test site and hurt people. Due to the right-angle double-opening structure, the safety door 8 Observation window, and observe the state of the test sample from multiple angles.

Preferably, the body is provided with a pressure display device 9, the pressure display device 9 includes a pressure gauge and a pressure sensor, the pressure sensor is arranged in a pipeline close to the compressor casing, and the pressure sensor is connected to the pressure gauge. The overpressure component can adjust the internal pressure of the compressor shell, display the pressure value in the shell through the pressure display device 9, adjust the rated pressure value required for the compressor shell test, and observe the change of the pressure display device 9, that is, The compressive strength of the compressor casing can be judged. The pressure sensor is arranged in the pipeline close to the compressor casing, which helps to improve the accuracy of measuring the pressure of the compressor casing.

Preferably, the input end of the triplet 1 is connected with a gas source, and the input end of the gas-liquid booster pump 4 is connected with tap water. Adding the air source is convenient for the triple unit 1 to purify, filter and depressurize the air source to the rated air source pressure supplied by the instrument; the input end of the gas-liquid booster pump 4 is connected to tap water, and the tap water is used as the test medium without any pollution to the environment. The cost is low, the safety is very high for the operator, and there is no need to measure different parts of the compressor casing multiple times, saving time and effort, and is safer than the air pressure when the test sample is broken, and it is easier than hydraulic oil as a medium Get is also cleaner.

Preferably, the solenoid valve 2 is a two-position three-way solenoid valve. The two-position three-way solenoid valve is controlled by two coils. One coil is instantly energized and the power is turned off and the valve is opened. After the other coil is instantly energized, the power is turned off and the valve is closed. It can be kept closed or open for a long time, which can make the coil life longer .

The working principle of the present invention is:

The internal pressure of the compressor casing can be adjusted through the pressure regulating assembly, the pressure value in the casing can be displayed through the pressure display device 9, and the pressure in the compressor casing can be adjusted to reach the expected set value. By observing the change of the pressure display device 9, that is, It can be judged whether the compressive strength of the compressor shell is sufficient, and the damage to the compressor shell is low, and there is no need to measure different parts of the compressor shell multiple times, saving time and effort. It is closely related to the welding condition of the compressor shell, so the welding strength of the welding seam of the compressor shell can also be tested quickly and accurately. It is safer when the test sample is broken, and it is easier to obtain and cleaner than the traditional liquid-liquid pressurization method using hydraulic oil as the medium. The right-angle double door structure greatly increases the operating space for sample installation and makes it easier to observe the samples in the test from multiple angles.

Example 2

The difference from Embodiment 1 is that the number of openings 71 in this embodiment is two, the angle between the two openings 71 is a right angle or an obtuse angle, and the bottom of the body is provided with a water tank, and the water tank is connected to the gas-liquid booster pump 4 . input connection. The included angle between the two openings 71 is a right angle or an obtuse angle, which is convenient for users to observe the state of the test sample from multiple angles. The accuracy of the pressure test; the bottom of the body adds a water tank to store the tap water after the test, which is convenient for the recycling of tap water and helps to reduce the cost of the test.

Other structures are the same as those in Embodiment 1, and are not repeated here.

Example 3

The difference from Embodiment 1 is that the withstand voltage measurement device of this embodiment further includes a control device, the voltage regulating component is connected in communication with the control device, and the control device is a PLC controller or an embedded controller. The control device is connected to the pressure regulating component in communication, and is used to control the pressure regulating component, eliminating the need for a separate triplet 1, solenoid valve 2, electrical converter 3, gas-liquid booster pump 4, one-way valve 5 and pressure relief valve 6 Control and help improve work efficiency. PLC controller is a digital logic controller used for automatic control. It can load control instructions into memory for storage and execution at any time. It is modularly combined by internal CPU, instruction and data memory, input and output units, power modules, and digital analog units. The embedded controller is an electronic device or device controlled by embedded microelectronic technology chips, including a series of microelectronic devices such as microprocessor chips, timers, sequencers or controllers, and can complete various monitoring, control, etc. An automated processing task. PLC controllers and embedded controllers are the models that can be directly purchased in the market. According to actual application scenarios and cost requirements, PLC controllers or embedded controllers can be selected as control devices.

Other structures are the same as those in Embodiment 1, and are not repeated here.

Example 4

A control method of a pressure resistance measuring device of a compressor casing, comprising:

The triple unit 1 purifies, filters and decompresses the air source to the rated air source pressure. The rated air source pressure passes through the solenoid valve 2 and enters the electrical converter 3. The electrical converter 3 controls the input control of the gas-liquid booster pump 4 end;

The gas-liquid booster pump 4 fills the compressor shell with tap water, and by adjusting the input pressure of the gas-liquid booster pump 4, the pressure in the compressor shell is adjusted to reach the expected set value;

The one-way valve 5 discharges the tap water through the pressure relief valve 6 .

It should be noted that, in the control method of the present invention, the triplet 1 is used to dry, purify, filter and depressurize the air source to the rated air source pressure and enter the solenoid valve 2, and enter the set rated pressure into the electrical converter 3 , the input end of the gas-liquid booster pump 4 is controlled by the electrical converter 3, that is, a very low pressure is applied to the large-diameter air-driven piston of the gas-liquid booster pump 4, when this pressure acts on a small area piston , a high pressure is generated, which can increase the liquid pressure value in the device. Since the high-pressure plunger pump controlled by the one-way valve 5 continuously discharges the liquid, the pressure at the output end of the gas-liquid booster pump 4 is related to the air driving pressure. When When the pressure between the driving part and the output liquid part reaches equilibrium, the gas-liquid booster pump 4 will stop running and no longer consume air. When the output pressure drops or the air driving pressure increases, the gas-liquid booster pump 4 will automatically start running , until the pressure balance is reached again, that is, the control end of the gas-liquid booster pump 4 is controlled by the electrical converter 3 to realize the adjustment of the output pressure of the gas-liquid booster pump 4, thereby adjusting the pressure required in the housing; wherein, When the pressure in the equipment or pipeline exceeds the set pressure of the pressure relief valve, it will automatically open the pressure relief to ensure that the medium pressure in the equipment and pipeline is below the set pressure, protect the equipment and pipeline, and prevent accidents.

Based on the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above-described embodiments. Therefore, the present invention is not limited to the above-mentioned specific embodiments, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the present invention falls within the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims (10)

1. The utility model provides a pressure-resistant measuring device of compressor housing which characterized in that: including the organism that is used for placing the compressor housing and install in the pressure regulating subassembly of organism, the pressure regulating subassembly includes trigeminy piece (1), solenoid valve (2), electrical converter (3), gas-liquid booster pump (4), check valve (5) and relief valve (6), the one end of solenoid valve (2) with trigeminy piece (1) intercommunication, the other end of solenoid valve (2) with electrical converter (3) intercommunication, the control end of gas-liquid booster pump (4) is connected electrical converter (3), the output of gas-liquid booster pump (4) with the input intercommunication of check valve (5), the output of check valve (5) respectively with relief valve (6) with compressor housing intercommunication.

2. A pressure resistance measuring device of a compressor shell as claimed in claim 1, wherein: the organism includes cavity (7) and emergency exit (8), cavity (7) are provided with a plurality of openings (71), emergency exit (8) are sealed opening (71).

3. A pressure resistance measuring device of a compressor shell according to claim 2, wherein: the safety door (8) is a right-angle double-opening safety door, the safety door (8) is hinged to the opening (71), and an explosion-proof observation window is arranged on the safety door (8).

4. A pressure resistance measuring device of a compressor shell according to claim 2, wherein: the number of the openings (71) is two, and an included angle between the two openings (71) is a right angle or an obtuse angle.

5. A pressure resistance measuring device of a compressor shell as claimed in claim 1, wherein: the compressor is characterized in that the machine body is provided with a pressure display device (9), the pressure display device (9) comprises a pressure gauge and a pressure sensor, the pressure sensor is arranged on a pipeline close to the shell of the compressor, and the pressure sensor is connected with the pressure gauge.

6. A pressure resistance measuring device of a compressor shell as claimed in claim 1, wherein: the bottom of the machine body is provided with a water tank, and the water tank is connected with the input end of the gas-liquid booster pump (4).

7. A pressure resistance measuring device of a compressor shell as claimed in claim 1, wherein: the input end of the triple piece (1) is connected with an air source, and the input end of the gas-liquid booster pump (4) is connected with tap water.

8. A pressure resistance measuring device of a compressor shell as claimed in claim 1, wherein: the pressure-resistant measuring device further comprises a control device, and the pressure regulating assembly is in communication connection with the control device.

9. The pressure resistance measuring device of compressor shell according to claim 8 is characterized in that the solenoid valve (2) is a two-position three-way solenoid valve, and the control device is a P L C controller or an embedded controller.

10. A control method of a pressure resistance measuring device of a compressor shell, characterized by comprising:

the triple piece (1) purifies, filters and reduces the pressure of an air source to a rated air source pressure, the rated air source pressure enters the electric converter (3) through the electromagnetic valve (2), and the control end of the gas-liquid booster pump (4) is controlled through the electric converter (3);

the gas-liquid booster pump (4) fills tap water into the compressor shell, and the output pressure of the gas-liquid booster pump (4), namely the internal pressure of the compressor shell, is adjusted by adjusting the input pressure of the gas-liquid booster pump (4);

the one-way valve (5) discharges tap water through the pressure relief valve (6).

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