CN216645845U

CN216645845U - Valve characteristic testing device

Info

Publication number: CN216645845U
Application number: CN202220095368.0U
Authority: CN
Inventors: 周翔; 孔德文; 李一鸣
Original assignee: Jiangsu Vocational College of Information Technology
Current assignee: Jiangsu Vocational College of Information Technology
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-05-31
Anticipated expiration: 2032-01-14

Abstract

The utility model relates to a valve characteristic testing device, which comprises a gas tank, wherein one end of the gas tank is connected with a manual switch valve through a pipeline, one end of the manual switch valve is connected with a proportional pressure valve through a pipeline, the other end of the proportional pressure valve is connected with a tested valve, two ends of the tested valve are both connected with pressure measuring components, the pressure measuring component at one end of the tested valve is connected with the proportional pressure valve, the pressure measuring component at the other end of the tested valve is connected with a thermal gas flowmeter, the thermal gas flowmeter is respectively connected with a two-way electromagnetic valve and a proportional flow valve through pipelines, one ends of the two-way electromagnetic valve and the proportional flow valve are both connected with a silencer through pipelines, and the pressure measuring components are electrically connected with a test acquisition display module, and the pressure flow characteristic curve is automatically generated, the test is convenient and fast, the method is simple, and the test precision is higher.

Description

Valve characteristic testing device

Technical Field

The utility model relates to the field of pneumatic valve characteristic testing, in particular to a valve characteristic testing device.

Background

At present, a common detection mode for pneumatic valve characteristic test is to compare characteristics with a standard valve and judge whether the valve is qualified or not by looking at the difference between a test curve of a tested valve and a curve of the standard valve. The testing method needs a standard valve with high precision, is high in cost and tedious in test, needs a large amount of data comparison, and greatly increases the workload of testing personnel.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, an object of the present invention is to provide a valve characteristic testing apparatus, which has the advantages that the pressure and flow characteristics of the tested valve can be measured only by connecting the tested valve to the tested port and setting parameters through a testing system, and a pressure and flow characteristic curve is automatically generated, so that the testing is convenient and fast, the method is simple, and the testing precision is higher.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a valve characteristic testing arrangement, includes the gas pitcher, pipe connection manual switch valve is passed through to gas pitcher one end, pipe connection proportional pressure valve is passed through to manual switch valve one end, the proportional pressure valve other end is connected with by the measuring valve, it all is connected with the pressure measurement subassembly to be measured the valve both ends, it connects proportional pressure valve to be measured the pressure measurement subassembly of valve one end, it connects hot type gas flowmeter to be measured the pressure measurement subassembly of the valve other end, hot type gas flowmeter is connected with two-way solenoid valve and proportional flow valve respectively through the pipeline, two-way solenoid valve all passes through the pipe connection muffler with proportional flow valve one end, pressure measurement subassembly electric connection gathers display module in the test.

By adopting the technical scheme, the air tank is arranged to play a buffering role, so that the phenomenon that the authenticity of a test result is influenced due to insufficient air supply when the opening of the tested valve is large is prevented, the proportional pressure valve is used for adjusting the pressure of the tested valve in front of the valve as soon as possible, and the proportional flow valve is used for generating exhaust back pressure and adjusting the outlet pressure of the tested valve; proportional control is adopted, so that the control precision is higher, and automatic operation can be realized; the thermal gas flowmeter is arranged, so that the measuring range ratio is large, the measuring range is wider, and the thermal gas flowmeter is suitable for measuring the flow characteristics of valves with different specifications; the connecting pipeline of the device is made of stainless steel pipes, so that the leakage of the gap output at the joint caused by expansion with heat and contraction with cold is prevented, and the measuring precision is guaranteed.

Further setting: and one end of the gas tank is provided with a filter, one end of the filter is connected with a pressure reducing valve through a pipeline, and one end of the pressure reducing valve is connected with the gas tank.

Further setting: the pressure measurement subassembly includes the pressure measurement pipe, install temperature sensor and pressure sensor on the pressure measurement pipe, the equal electric connection of temperature sensor and pressure sensor gathers display module in the test.

Through adopting above-mentioned technical scheme, the import and the export at the valve of being surveyed are installed respectively to the setting of buret of pressure measurement for measure the import pressure and the export pressure of being surveyed the valve, import temperature and export temperature. The pressure is stabilized through the pressure measuring tube, and the measured pressure and temperature data are more accurate and the reliability is higher.

Further setting: the test acquisition display module consists of a PLC acquisition device, a control module and an input module.

Further setting: the muffler includes the amortization storehouse, amortization storehouse one end is equipped with connects the trachea, it is equipped with the switching mouth to connect trachea one end, switching mouth connecting tube, the amortization storehouse other end is equipped with the blast pipe of symmetric distribution, blast pipe end-to-end connection tail gas head, install filter plate in the tail gas head, be equipped with a plurality of supporting diaphragm in the amortization storehouse, a plurality of supporting diaphragm are fixed to connect trachea and blast pipe, all be equipped with the conversion gas pocket on connecing trachea and the blast pipe, the last air vent that is equipped with the diameter variation in size of supporting diaphragm, connect trachea and blast pipe all be equipped with the acoustic celotex board from top to bottom, the acoustic celotex board is fixed on the supporting diaphragm, the acoustic celotex board is whole to be ripple curved plate.

Through adopting above-mentioned technical scheme, the gaseous amortization storehouse of entering into through connecing the trachea of producing the noise, connect the conversion gas pocket that sets up on trachea and the blast pipe to can carry out the air current conversion circulation, and flow through the air vent on the supporting diaphragm, thereby the persistence of noise reduction, the acoustic celotex board can prevent the noise to spread the amortization storehouse, improves the noise cancelling capacity in the at utmost, the production of noise reduction, filter plate can filter the foreign gas in the blast pipe, avoid polluting the surrounding environment.

Further setting: the pipeline adopts a stainless steel pipe.

Through adopting above-mentioned technical scheme, adopt nonrust steel pipe, prevent to leak because the gap output that expend with heat and contract with cold caused the junction, ensured measuring precision.

In summary, the utility model has the following advantages: the overall structure can control and adjust the inlet and outlet pressure of the tested valve through the proportional pressure valve and the proportional flow valve during the valve characteristic test, the control precision is higher, and the automatic operation can be realized. The pressure is stabilized through the pressure measuring tube, and the measured pressure and temperature data are more accurate and the reliability is higher; the thermal gas flowmeter is adopted, so that the measuring range is large, the measuring range is wider, and the thermal gas flowmeter is suitable for measuring the flow characteristics of valves with different specifications.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, and are not to be considered limiting of the utility model, in which:

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

Fig. 2 is a schematic view of the structure of a silencer according to the present invention.

FIG. 3 is a front view of the muffler of the present invention.

Fig. 4 is a right side view of the muffler of the present invention.

Fig. 5 is a cross-sectional view B-B of fig. 3 of the present invention.

Fig. 6 is a cross-sectional view taken along line D-D of fig. 3 in accordance with the present invention.

In the figure, 1, filter; 2. a pressure reducing valve; 3. a gas tank; 4. a manual on-off valve; 5. a proportional pressure valve; 6. a pressure measurement tube; 7. a valve under test; 8. a thermal gas flow meter; 9. a two-way solenoid valve; 10. a muffler; 11. a proportional flow valve; 12. a test acquisition display module; 13. a temperature sensor; 14. a pressure sensor; 15. a silencing bin; 16. a gas receiving pipe; 161. a transfer port; 17. an exhaust pipe; 171. an exhaust head; 172. converting the air holes; 18. filtering the screen plate; 19. supporting the partition plate; 191. a vent hole; 20. an acoustic panel.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of embodiments, which is to be read in connection with the accompanying drawings. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1: a valve characteristic testing device is disclosed, as shown in figures 1-6, comprising a gas tank 3, one end of the gas tank 3 is provided with a filter 1, one end of the filter 1 is connected with a pressure reducing valve 2 through a pipeline, one end of the pressure reducing valve 2 is connected with the gas tank 3, the other end of the gas tank 3 is connected with a manual switch valve 4 through a pipeline, one end of the manual switch valve 4 is connected with a proportional pressure valve 5 through a pipeline, the other end of the proportional pressure valve 5 is connected with a tested valve 7, two ends of the tested valve 7 are both connected with pressure measuring components, the pressure measuring components comprise a pressure measuring pipe 6, a temperature sensor 13 and a pressure sensor 14 are installed on the pressure measuring pipe 6, the temperature sensor 13 and the pressure sensor 14 are both electrically connected with a test acquisition display module 12, the test acquisition display module 12 is composed of a PLC collector, a control module and an input module, the pressure measuring component at one end of the tested valve 7 is connected with the proportional pressure valve 5, the pressure measuring component at the other end of the valve 7 to be measured is connected with a thermal gas flowmeter 8, the thermal gas flowmeter 8 is respectively connected with a two-way electromagnetic valve 9 and a proportional flow valve 11 through pipelines, one ends of the two-way electromagnetic valve 9 and the proportional flow valve 11 are both connected with a silencer 10 through pipelines, the silencer 10 comprises a silencing bin 15, one end of the silencing bin 15 is provided with a gas receiving pipe 16, one end of the gas receiving pipe 16 is provided with an adapter port 161, the adapter port 161 is connected with the pipelines, the other end of the silencing bin 15 is provided with exhaust pipes 17 which are symmetrically distributed, the tail gas head 171 is connected with the tail gas end of the exhaust pipe 17, a filter screen 18 is installed in the tail gas head 171, a plurality of supporting partition plates 19 are arranged in the silencing bin 15, the plurality of supporting partition plates 19 are fixedly connected with the gas receiving pipe 16 and the exhaust pipe 17, the gas receiving pipe 16 and the exhaust pipe 17 are both provided with conversion air holes 172, the supporting partition plates 19 are provided with air holes 191 with different diameters, the sound insulation plates 20 are arranged above and below the gas receiving pipe 16 and the exhaust pipe 17, the baffle 20 is fixed on the support clapboard 19, the baffle 20 is a corrugated curved plate as a whole, and all the pipelines adopt stainless steel pipes.

Two test modes can be adopted during use:

the first method is as follows: firstly, an air source is connected, air is filled into an air tank 3 through a filter 1 and a pressure reducing valve 2, when the pressure reaches 0.6Mpa, a manual switch valve 4 is opened, the inlet pressure and the outlet pressure of a measured object are arranged on a test acquisition display module 12, a system automatically adjusts a proportional pressure valve 5 and a proportional flow valve 11, the inlet pressure and the outlet pressure of a measured valve 7 are acquired through a pressure measuring pipe 6, and the flow of the measured valve 7 is acquired through a thermal gas flowmeter 8; the real-time acquisition curve is displayed through the test acquisition display module 12, and is automatically acquired and recorded as a data point when the pressure and flow signals are stable; keeping the set value of the outlet pressure unchanged, continuously setting the value of the inlet pressure, continuously collecting data points, repeating the steps, and displaying the data point change curve on the test collection display module 12 to obtain the measured pressure flow characteristic curve.

The second method comprises the following steps: firstly, an air source is connected, air is filled into an air tank 3 through a filter 1 and a pressure reducing valve 2, when the pressure reaches 0.6Mpa, a manual switch valve 4 is opened, the inlet pressure and the outlet pressure of a measured object are arranged on a test acquisition display module 12, a system automatically adjusts a proportional pressure valve 5 and a proportional flow valve 11, the inlet pressure and the outlet pressure of a measured valve 7 are acquired through a pressure measuring pipe 6, and the flow of the measured valve 7 is acquired through a thermal gas flowmeter 8; the real-time acquisition curve is displayed through the test acquisition display module 12, and is automatically acquired and recorded as a data point when the pressure and flow signals are stable; keeping the inlet pressure setting value unchanged, continuously setting the outlet pressure value, continuously collecting data points, repeating the steps, and displaying a data point change curve on the test collection display module 12 to obtain a measured pressure and flow characteristic curve.

While the utility model has been described in further detail with reference to specific embodiments thereof, it is not intended that the utility model be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.

Claims

1. A valve characteristic testing device is characterized in that: comprises a gas tank (3), one end of the gas tank (3) is connected with a manual switch valve (4) through a pipeline, one end of the manual switch valve (4) is connected with a proportional pressure valve (5) through a pipeline, the other end of the proportional pressure valve (5) is connected with a measured valve (7), both ends of the measured valve (7) are connected with pressure measuring components, a pressure measuring component at one end of the measured valve (7) is connected with the proportional pressure valve (5), the pressure measuring component at the other end of the measured valve (7) is connected with a thermal gas flowmeter (8), the thermal gas flowmeter (8) is respectively connected with a two-way electromagnetic valve (9) and a proportional flow valve (11) through pipelines, two lead to solenoid valve (9) and proportional flow valve (11) one end all through pipe connection muffler (10), pressure measurement subassembly electric connection gathers display module (12) in the test.

2. A valve characteristic testing device according to claim 1, wherein: the gas pitcher (3) one end is equipped with filter (1), filter (1) one end is through pipe connection relief pressure valve (2), gas pitcher (3) is connected to relief pressure valve (2) one end.

3. A valve characteristic testing device according to claim 1, wherein: the pressure measurement subassembly includes pressure measurement pipe (6), install temperature sensor (13) and pressure sensor (14) on pressure measurement pipe (6), the equal electric connection of temperature sensor (13) and pressure sensor (14) gathers display module (12) in the test.

4. A valve characteristic testing device according to claim 1, wherein: the test acquisition display module (12) consists of a PLC acquisition device, a control module and an input module.

5. A valve characteristic testing device according to claim 1, wherein: the silencer (10) comprises a silencing bin (15), wherein a gas receiving pipe (16) is arranged at one end of the silencing bin (15), a switching port (161) is arranged at one end of the gas receiving pipe (16), the switching port (161) is connected with a pipeline, exhaust pipes (17) which are symmetrically distributed are arranged at the other end of the silencing bin (15), the tail end of each exhaust pipe (17) is connected with a tail gas head (171), a filter screen plate (18) is installed in each tail gas head (171), a plurality of supporting partition plates (19) are arranged in the silencing bin (15), the gas receiving pipes (16) and the exhaust pipes (17) are fixed by the supporting partition plates (19), conversion air holes (172) are formed in the gas receiving pipes (16) and the exhaust pipes (17), air holes (191) with different diameters are formed in the supporting partition plates (19), and sound insulation plates (20) are arranged on the gas receiving pipes (16) and the exhaust pipes (17) from top to bottom, the sound insulation board (20) is fixed on the support clapboard (19), and the whole sound insulation board (20) is a corrugated curved plate.

6. A valve characteristic testing device according to claim 1, wherein: the pipeline is made of stainless steel pipes.