Movable self-control valve testing device

Abstract

The utility model discloses a movable self-control valve testing device, which comprises a vacuum pump, an air compressor, a pressure gauge, a control cabinet and an electrical system, and can be used for carrying out stroke test and leakage test on a self-control valve to be tested. The vacuum degree of the vacuum pump is set according to local actual altitude atmospheric pressure; the air compressor is responsible for providing air source supply for the tested valve and providing two paths of air source control for opening and closing the valve, and for a stroke test, the stroke test is carried out on a switch valve controlled by an electromagnetic valve by supplying voltage or a regulating valve controlled by a current signal; for a leakage rate test, whether the self-control valve is closed tightly or not and whether the self-control valve can meet the use requirement or not is judged through pressurization and pressure maintaining tests. The hydraulic valve test bench replaces a traditional hydraulic valve test bench, overcomes the defect that the valve test process in the prior art only depends on the hydraulic valve test bench, and has the advantages of being simple in structure, easy to operate, convenient to maintain, low in use and maintenance cost and high in working efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, and specifically relates to a mobile self-control valve testing device. Background Technology

[0002] Currently, in the process control field, the testing of automated control valves is carried out using hydraulic valve testing benches provided by specialized equipment manufacturers. However, these hydraulic valve testing benches are insufficient for testing large quantities of bulky and demanding automated control valves due to their lengthy testing times and complex procedures. There is currently no portable automated control valve testing device in the chemical equipment field that provides a convenient, simple, and efficient testing service for automated control valves. Summary of the Invention

[0003] The technical problem this application aims to solve is that there is currently no portable, simple, and efficient valve testing device in the field of automatic valve testing.

[0004] To overcome the shortcomings of existing technologies that rely solely on hydraulic valve test benches in the testing of self-controlled valves, this invention provides a portable self-controlled valve testing device.

[0005] This utility model discloses a portable automatic control valve testing device, including a vacuum pump, an air compressor, a pressure gauge, a control cabinet, and an electrical system. It can perform stroke testing and leakage testing on the automatic control valve under test. The power supply requirement is 220V 50HZ, and the total power is 2KW.

[0006] The vacuum pump has a power of 0.55KW and a displacement of 0.08m³ / min; the vacuum level is set according to the actual atmospheric pressure at the local altitude.

[0007] The air compressor is responsible for providing air supply to the valve under test, providing two air supply controls for valve opening and closing. The air supply is adjustable with an adjustment accuracy of 0.1 MPa. It has a power of 1.5 kW, a displacement of 0.17 m³ / min, and a rated pressure of 0.8 MPa. The top cover of the air compressor is extended by 10 cm for rain protection. The air compressor uses dedicated air hoses with a diameter of 1.0 MPa or less, with the hoses having a φ8 diameter.

[0008] The pressure gauge interlocks to control the vacuum pump's shutdown, and the pressure gauge pressure can be set automatically. When the pressure reaches the set limit, it will promptly shut down the vacuum pump to ensure the normal functioning of the fluoropolymer-lined valve. The pressure gauge has an accuracy of 0.5 class and outputs a 24V DC voltage and a 4-20mA current signal.

[0009] The control cabinet and electrical system are equipped with casters and have a retractable power cord for backup.

[0010] For stroke testing, the stroke is tested by applying a 24V DC voltage to a solenoid-controlled switching valve or by applying a 4-20mA current signal to a regulating valve.

[0011] For leakage testing, pressure testing and pressure holding tests are used to determine whether the automatic control valve closes tightly and whether it can meet the usage requirements. Beneficial effects

[0012] This utility model provides a portable self-controlled valve testing device, including stroke testing and leakage testing, which replaces the traditional hydraulic valve test bench and eliminates the defect that the valve testing process in the prior art can only rely on the hydraulic valve test bench. It has the characteristics of simple structure, easy operation, convenient maintenance, low use and maintenance cost, and high work efficiency. Attached Figure Description

[0013] Figure 1 A plan view of a portable self-controlled valve testing device according to this utility model; Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. Example 1

[0015] This utility model discloses a portable automatic control valve testing device, including a vacuum pump, an air compressor, a pressure gauge, a control cabinet, and an electrical system. It can perform stroke testing and leakage testing on the automatic control valve under test. The power supply requirement is 220V 50HZ, and the total power is 2KW.

[0016] The vacuum pump has a power of 0.55KW and a displacement of 0.08m³ / min; the vacuum level is set according to the actual atmospheric pressure at the local altitude.

[0017] The air compressor is responsible for providing air supply to the valve under test, providing two air supply controls for valve opening and closing. The air supply is adjustable with an adjustment accuracy of 0.1 MPa. It has a power of 1.5 kW, a displacement of 0.17 m³ / min, and a rated pressure of 0.8 MPa. The top cover of the air compressor is extended by 10 cm for rain protection. The air compressor uses dedicated air hoses with a diameter of 1.0 MPa or less, with the hoses having a φ8 diameter.

[0018] The pressure gauge interlocks to control the vacuum pump's shutdown, and the pressure gauge pressure can be set automatically. When the pressure reaches the set limit, it will promptly shut down the vacuum pump to ensure the normal functioning of the fluoropolymer-lined valve. The pressure gauge has an accuracy of 0.5 class and outputs a 24V DC voltage and a 4-20mA current signal.

[0019] The control cabinet and electrical system are equipped with casters and a retractable power cord is provided for backup.

[0020] The stroke test is performed by applying a 24V DC voltage to a solenoid-controlled switching valve or by applying a 4-20mA current signal to a regulating valve.

[0021] The leakage test, through pressurization and pressure holding tests, determines whether the automatic control valve closes tightly and whether it meets the usage requirements.

Claims

1. A portable self-controlled valve testing device, comprising a vacuum pump, an air compressor, a pressure gauge, a control cabinet, and an electrical system, capable of performing stroke and leakage tests on the self-controlled valve under test; power supply requirements: 220V 50HZ, total power: 2KW; characterized in that... The vacuum pump has a power of 0.55KW and a displacement of 0.08m³ / min; the vacuum level is set according to the actual atmospheric pressure at the local altitude. The air compressor is responsible for providing air supply to the valve under test, providing two air supply controls for valve opening and closing. The air supply is adjustable with an adjustment accuracy of 0.1 MPa. It has a power of 1.5 kW, a displacement of 0.17 m³ / min, and a rated pressure of 0.8 MPa. The top cover of the air compressor is extended by 10 cm for rain protection. The air compressor uses dedicated air hoses with a diameter of 1.0 MPa or less, with the hoses having a φ8 diameter. The pressure gauge interlocks to control the vacuum pump's stop, and the pressure gauge pressure can be set automatically. When the pressure reaches the set limit, it will promptly shut down the vacuum pump to ensure the normal function of the fluoropolymer-lined valve; the pressure gauge has an accuracy of 0.5 class; and it has an output voltage of 24V DC and a current of 4-20mA output signal function. The control cabinet and electrical system are equipped with casters and are provided with a retractable power cord for backup. The stroke test is performed by applying a 24V DC voltage to a solenoid-controlled switching valve or by applying a 4-20mA current signal to a regulating valve. The leakage test, through pressurization and pressure holding tests, determines whether the automatic control valve closes tightly and whether it meets the usage requirements.

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