Pressure reducer testing system and method for simulating real working conditions

Abstract

The invention provides a pressure reducer test system and test method for simulating real working conditions, the pressure reducer test system comprises an upstream gas source, a downstream simulation use environment unit, a control and data acquisition unit and a tested pressure reducer, the downstream simulation use environment unit comprises a downstream working condition simulation device and a flow pump, the downstream working condition simulation device comprises a simulation box, a front end cover plate and a rear end cover plate, the interior of the simulation box is a cavity, the simulation box is filled with a certain volume of liquid working medium before testing, and the flow pump pumps out liquid from the simulation box according to the required pressure, so that the required downstream working condition is simulated. According to the invention, a certain volume of liquid working medium is filled into the downstream working condition simulation device, a certain amount of air cushion is left to meet the debugging and testing requirements of the tested pressure reducer, and the actual downstream working conditions are simulated, so that the testing efficiency of the pressure reducer is improved, and the actual downstream working conditions are widely adapted to be simulated; and the pressure reducer can be tested conveniently, universally, accurately and quickly.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure reducer testing, and in particular relates to a pressure reducer testing system and a testing method for simulating real working conditions. Background Art

[0002] The pressure reducer is an important component of the hydraulic transport system and is widely used in the engineering field. Its function is to provide a stable and controllable pressure loss through throttling, reduce the pressure of the upstream high-pressure fluid, and can adapt to the pressure difference between upstream and downstream, playing an important control and regulation role in the entire transport system.

[0003] In order to obtain the working characteristics of the pressure reducer, it is necessary to carry out performance testing on the pressure reducer. In the engineering field, the pressure reducer test system is a test system used to debug, test or accept the performance of the pressure reducer. Usually, the test system is used to carry out multiple tests on the pressure reducer to obtain reliable and accurate data to evaluate the various performance of the pressure reducer, and further improve and optimize the design parameters of the pressure reducer based on this, verify the product performance, shorten the design cycle, and improve the efficiency of product development. With the development of hydraulic transportation system technology, the application environment of the pressure reducer is becoming more and more complex, and the performance requirements are becoming more and more stringent, which puts higher requirements on the adaptability of the pressure reducer. The inlet and outlet pressures of the pressure reducer need to be measured during the test. The traditional test method of using the orifice plate throttling at the outlet of the pressure reducer requires the orifice plate structure to be designed for different working conditions, with a large error magnitude and difficult calibration. The replacement and disassembly are frequent during the test, and the test method using the orifice plate throttling is difficult to adapt to the situation where the actual working downstream pressure is lower than the local ambient atmospheric pressure. At present, there is no pressure reducer test method that can simulate real working conditions. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a pressure reducer testing system and testing method that simulates real working conditions. The solution of the present invention can solve the problems existing in the above-mentioned prior art.

[0005] The technical solution of the present invention:

[0006] According to a first aspect, a pressure reducer testing system simulating real working conditions is provided, comprising an upstream gas source, a downstream simulated use environment unit, a control and data acquisition unit and a tested pressure reducer, wherein the upstream gas source is connected to the air inlet of the tested pressure reducer, and the downstream simulated use environment unit is connected to the air outlet of the tested pressure reducer; the upstream gas source provides high-pressure inert gas, the downstream simulated use environment unit comprises a downstream working condition simulation device and a flow pump, the downstream working condition simulation device comprises a simulation box, a front end cover plate and a rear end cover plate, the front end cover plate is sealed and fixed to the front end of the simulation box, the rear end cover plate is sealed and fixed to the rear end of the simulation box, the front end cover plate and the rear end cover plate are connected to the air outlet of the tested pressure reducer; A through hole for air path connection is arranged on the end cover plate, the interior of the simulation box is a cavity, a certain volume of liquid working medium is filled therein before testing, and the flow pump pumps out liquid from the simulation box according to the required pressure, thereby simulating the required downstream working condition; the control and data acquisition unit comprises a pressure parameter acquisition component and a control component, and there are three pressure parameter acquisition components, which are respectively connected to the air inlet, air outlet and outlet of the tested pressure reducer and the downstream working condition simulation device to obtain the pressure of the air inlet, air outlet and outlet of the downstream working condition simulation device of the tested pressure reducer, and the control component is connected to the flow pump, and controls the flow pump to work according to the working condition to be simulated, and determines the volume of the liquid inside the simulation box.

[0007] Furthermore, the upstream gas source includes a gas source, a filter and a switch valve. The gas source, the filter and the switch valve are sealed and connected in sequence through an air path. The gas source provides high-pressure inert gas. The filter is a gas filtering device installed in the gas path to prevent excess matter and large particles of impurities from entering the test system and affecting the test results; the switch valve is a valve that controls the flow path switch.

[0008] Furthermore, the downstream operating condition simulation device also includes an adjustment bracket, which is connected to the simulation box and is a load-bearing support component of the downstream operating condition simulation device.

[0009] Furthermore, the downstream operating condition simulation device also includes a flow meter and a drainage collection box, and the flow pump, flow meter and drainage collection box are connected to the pipeline in sequence.

[0010] Furthermore, the pressure acquisition component is a pressure sensor, and the control component is a test console. The test console is connected to the switch valve, flow pump, pressure sensor and flow meter, respectively controlling the opening and closing of the switch valve and the speed of the flow pump, and receiving data recorded by the flow meter and pressure sensor at the same time.

[0011] Preferably, the simulation box is a metal spherical storage box.

[0012] According to a second aspect, a pressure reducer testing method simulating real working conditions is provided, comprising the following steps:

[0013] Close the on-off valve, pre-fill the downstream working condition simulation device with a volume of V1 of liquid working fluid, the remaining air cushion volume in the device is V2, and adjust the simulation box posture to the required angle;

[0014] Set up the test operating profiles of the switch valve and flow pump, and connect the test system pipelines;

[0015] After the gas source pressure reaches the required working condition, the switch valve and flow pump work according to the test working condition profile, the high-pressure gas enters the tested pressure reducer, and after being reduced in pressure, it enters the downstream working condition simulation device, and the flow pump extracts the liquid working medium;

[0016] Record and save the data collected by the pressure sensor and flow meter, and organize the test data.

[0017] Furthermore, the V1 and V2 are set according to the downstream working conditions that meet the test requirements of the pressure reducer under test.

[0018] The beneficial effects of the present invention compared with the prior art are as follows:

[0019] The test system of the present invention is composed of an upstream gas source, a downstream simulated use environment unit, a control and data acquisition system and a tested pressure reducer. A certain volume of liquid working medium is filled into a downstream working condition simulation device, and a certain amount of air cushion is left to meet the debugging and testing requirements of the tested pressure reducer, so as to simulate the actual working conditions of the downstream, thereby improving the test efficiency of the pressure reducer, and widely and adaptably simulates the actual working conditions of the downstream, so as to carry out the pressure reducer test conveniently, universally, accurately and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The included drawings are used to provide a further understanding of the embodiments of the present invention, which constitute a part of the specification, are used to illustrate the embodiments of the present invention, and together with the text description, explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the overall structural block diagram of a pressure reducer testing system provided in an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of a flow path of a pressure reducer testing system according to an embodiment of the present invention is shown;

[0023] Figure 3 A simplified cross-sectional view of a downstream operating condition simulation device provided according to an embodiment of the present invention is shown.

[0024] The above drawings contain the following reference numerals:

[0025] 1. Air source; 2. Filter; 3. Switch valve; 4. Test pressure reducer; 5. Downstream operating condition simulation device; 6. Flow pump; 7. Flow meter; 8. Drainage collection box; 9. Signal acquisition and test console 9; 5-1. Simulation box 5-1; 5-2. Front cover plate; 5-3. Rear cover plate; 5-4. Adjustment bracket. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0029] like Figure 1As shown, according to an embodiment of the first aspect of the present invention, a pressure reducer testing system simulating real working conditions is provided, comprising an upstream gas source, a downstream simulated use environment unit, a control and data acquisition unit and a tested pressure reducer 4, wherein the upstream gas source is connected to the gas inlet of the tested pressure reducer 4, and the downstream simulated use environment unit is connected to the gas outlet of the tested pressure reducer 4; the upstream gas source provides high-pressure inert gas, and the downstream simulated use environment unit comprises a downstream working condition simulation device 5 and a flow pump 6, wherein the downstream working condition simulation device 5 comprises a simulation box 5-1, a front end cover plate 5-2 and a rear end cover plate 5-3, wherein the front end cover plate 5-2 is sealed and fixed at the front end of the simulation box, and the rear end cover plate 5-3 is sealed and fixed at the rear end of the simulation box, and the front end cover plate 5-1 is sealed and fixed at the rear end of the simulation box. 2 and the rear end cover plate 5-3 are provided with a through hole for air path connection. The interior of the simulation box 5-1 is a cavity, and a certain volume of liquid working medium is filled therein before testing. The flow pump 6 pumps liquid into the simulation box 5-1 according to the required pressure, thereby simulating the required downstream working conditions; the control and data acquisition unit includes a pressure parameter acquisition component and a control component. There are three pressure parameter acquisition components, which are respectively connected to the air inlet, air outlet and outlet of the downstream working condition simulation device 5 of the tested pressure reducer 4 to obtain the pressure of the air inlet, air outlet and outlet of the downstream working condition simulation device 5 of the tested pressure reducer 4. The control component is connected to the flow pump 6, and controls the flow pump 6 to work according to the working conditions to be simulated, and determines the volume of the liquid inside the simulation box 5-1.

[0030] Through the above settings, according to the certain volume of liquid working fluid that needs to be filled, a certain amount of air cushion is left to meet the debugging and testing requirements of the tested pressure reducer 4, simulate the actual working conditions of the downstream, thereby improving the test efficiency of the pressure reducer, and widely adaptably simulate the actual working conditions of the downstream, so as to carry out the pressure reducer test conveniently, universally, accurately and quickly.

[0031] Further in one embodiment, the upstream gas source includes a gas source 1, a filter 2 and a switch valve 3. The gas source 1, the filter 2 and the switch valve 3 are sealed and connected in sequence through a gas path. The gas source 1 provides high-pressure inert gas. The filter 2 is a gas filtering device installed in the gas path to prevent excess matter and large particles of impurities from entering the test system and affecting the test results. The switch valve 3 is a valve that controls the flow path switch.

[0032] Furthermore, in one embodiment, the downstream operating condition simulation device 5 also includes an adjustment bracket 5 - 4 , and the adjustment bracket 5 - 4 is connected to the simulation box 5 - 1 and is a load-bearing support component of the downstream operating condition simulation device 5 .

[0033] Furthermore, in one embodiment, the downstream operating condition simulation device 5 also includes a flow meter 7 and a drainage collection box 8, and the flow pump 6, flow meter 7 and drainage collection box 8 are sequentially connected to the pipeline.

[0034] Further in one embodiment, the pressure acquisition component is a pressure sensor, and the control component is a test console. The test console is connected to the switch valve 3, the flow pump 6, the pressure sensor and the flow meter 7, which respectively control the opening and closing of the switch valve 3 and the speed of the flow pump 6, and at the same time receive the data recorded by the flow meter 7 and the pressure sensor.

[0035] Preferably, in one embodiment, the simulation tank 5 - 1 is a metal spherical storage tank.

[0036] According to a second aspect of the embodiment, a pressure reducer testing method simulating real working conditions is provided, comprising the following steps:

[0037] Close the on-off valve 3, pre-fill the downstream working condition simulation device 5 with a liquid working medium of volume V1, the remaining air cushion volume in the device is V2, and adjust the posture of the simulation box to the required angle;

[0038] Set the test operating profiles of the switch valve 3 and the flow pump 6, and connect the test system pipelines;

[0039] After the gas source pressure reaches the required working condition, the switch valve 3 and the flow pump 6 work according to the test working condition profile, and the high-pressure gas enters the tested pressure reducer 4, and after being reduced in pressure, enters the downstream working condition simulation device 5, and the flow pump 6 extracts the liquid working medium;

[0040] The data collected by the pressure sensor and flow meter 7 are recorded and saved, and the test data are sorted out.

[0041] Further in one embodiment, the V1 and V2 are set according to the downstream working conditions that meet the test requirements of the pressure reducer 4 under test.

[0042] In order to have a further understanding of the pressure reducer testing system for simulating real working conditions provided by the present invention, a detailed description is given below in conjunction with specific examples and drawings.

[0043] like Figure 1 The figure shows the overall structural block diagram of the pressure reducer test system provided by the specific embodiment of the present invention, including an upstream gas source, a downstream simulated use environment unit, a control and data acquisition system and a pressure reducer 4 to be tested.

[0044] The upstream gas source provides the upstream use environment for the tested pressure reducer 4, including the gas source 1, the filter 2 and the switch valve 3. The downstream simulated use environment unit simulates the downstream use environment for the tested pressure reducer 4, including the downstream working condition simulation device 5, the flow pump 6, the flow meter 7 and the drainage collection box 8. The control and data acquisition system includes the pressure sensor and the signal acquisition and test console 9.

[0045] like Figure 2 Shown is a flow path schematic diagram of a pressure reducer testing system provided in a specific embodiment of the present invention.

[0046] The gas source 1 is a gas cylinder that provides high-pressure inert gas; the filter 2 is an air filter that prevents excess matter and large particles from entering the test system and affecting the test results; the switch valve 3 is a valve that controls the flow path switch. The gas source 1, the filter 2 and the switch valve 3 are sealed and connected in sequence. The downstream working condition simulation device 5 includes a simulation box 5-1, a front cover plate 5-2, a rear cover plate 5-3 and an adjustment bracket 5-4; the simulation box 5-1 is a metal spherical storage box with a thickness of not less than 3mm; the front cover plate 5-2 and the rear cover plate 5-3 are both circular metal covers with a thickness of not less than 3mm, which are sealed and connected to the simulation box 5-1, and a position-adjustable metal pipe is installed on it, and the pipeline interface serves as the inlet and outlet of the simulation box 5-1; the adjustment bracket 5-4 is a height-adjustable supporting annular metal frame, which is a load-bearing support component of the downstream working condition simulation device 5. The flow pump 6 is a volumetric pump that adjusts the speed according to the signal, the flow meter 7 is used to measure the flow rate of the system flow path, and the drainage collection box 8 is a storage box for collecting the liquid discharged during the test. The downstream working condition simulation device 5, the quantitative pump, the flowmeter 7 and the drainage collection box 8 are sealed and connected in sequence. The pressure data P1, P2 and P3 collected by the three pressure sensors are respectively the pressure between the filter 2 and the switch valve 3, between the pressure reducer outlet and the downstream working condition simulation device 5, and between the downstream working condition simulation device 5 and the flow pump 6. The signal acquisition and test console is connected to the three pressure sensors and the flowmeter 7 to record and save the pressure and flow data, and is connected to the switch valve 3 and the flow pump 6 to control each device to work according to the required test condition profile.

[0047] like Figure 3 Shown is a simplified cross-sectional view of a downstream operating condition simulation device 5 provided in a specific embodiment of the present invention.

[0048] Adjust the simulation box 5-1 to the required angle, fill the downstream working condition simulation device 5 with a liquid medium of volume V1, and the remaining volume V2 of the air cushion to meet the actual downstream working conditions required by the test. Set the test working condition profile of the switch valve 3 and the flow pump 6 through the signal acquisition and test console, connect the test system pipeline, and after the gas source pressure meets the required working conditions, the switch valve 3 and the flow pump 6 work according to the test working condition profile. The high-pressure gas enters the pressure reducer and enters the downstream working condition simulation device 5 after decompression. The flow pump 6 pumps the liquid medium into the drainage collection box 8. The data collected by the pressure sensor and the flow meter 7 are recorded and saved through the signal acquisition and test console, and a round of testing is completed.

[0049] In summary, the pressure reducer testing system and testing method for simulating real working conditions provided by the present invention have at least the following advantages over the prior art:

[0050] The test system of the present invention is composed of an upstream gas source, a downstream simulated use environment unit, a control and data acquisition system and a tested pressure reducer. A certain volume of liquid working fluid is filled into a downstream working condition simulation device, and a certain amount of air cushion is left to meet the debugging and testing requirements of the tested pressure reducer, so as to simulate the actual working conditions of the downstream, thereby improving the test efficiency of the pressure reducer, and widely and adaptably simulates the actual working conditions of the downstream, so as to carry out the pressure reducer test conveniently, universally, accurately and quickly.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure reducer testing system simulating real working conditions, characterized in that: It includes an upstream gas source, a downstream simulated use environment unit, a control and data acquisition unit and a tested pressure reducer, wherein the upstream gas source is connected to the air inlet of the tested pressure reducer, and the downstream simulated use environment unit is connected to the air outlet of the tested pressure reducer; the upstream gas source provides high-pressure inert gas, and the downstream simulated use environment unit includes a downstream working condition simulation device and a flow pump, and the downstream working condition simulation device includes a simulation box, a front end cover plate and a rear end cover plate, wherein the front end cover plate is sealed and fixed to the front end of the simulation box, and the rear end cover plate is sealed and fixed to the rear end of the simulation box, and through holes for gas path connection are arranged on the front end cover plate and the rear end cover plate The interior of the simulation box is a cavity, and a certain volume of liquid working fluid is filled into it before testing. The flow pump pumps out liquid from the simulation box according to the required pressure, thereby simulating the required downstream working conditions; the control and data acquisition unit includes a pressure parameter acquisition component and a control component. There are three pressure parameter acquisition components, which are respectively connected to the air inlet, air outlet and outlet of the tested pressure reducer and the downstream working condition simulation device to obtain the pressure of the air inlet, air outlet and outlet of the downstream working condition simulation device of the tested pressure reducer. The control component is connected to the flow pump and controls the flow pump to work according to the working conditions to be simulated, and determines the volume of the liquid inside the simulation box.

2. A pressure reducer testing system simulating real working conditions according to claim 1, characterized in that: The upstream gas source includes a gas source, a filter and a switch valve. The gas source, the filter and the switch valve are sealed and connected in sequence through a gas path. The gas source provides high-pressure inert gas. The filter is a gas filtering device installed in the gas path to prevent excess matter and large particles of impurities from entering the test system and affecting the test results; the switch valve is a valve that controls the flow path switch.

3. A pressure reducer testing system simulating real working conditions according to claim 2, characterized in that: The downstream working condition simulation device also includes an adjusting bracket, which is connected to the simulation box and is a load-bearing support component of the downstream working condition simulation device.

4. A pressure reducer testing system simulating real working conditions according to claim 3, characterized in that: The downstream operating condition simulation device also includes a flow meter and a drainage collection box. The flow pump, flow meter and drainage collection box are connected to the pipeline in sequence.

5. A pressure reducer testing system simulating real working conditions according to claim 4, characterized in that: The pressure acquisition component is a pressure sensor, and the control component is a test console. The test console is connected to the switch valve, flow pump, pressure sensor and flow meter, respectively controlling the opening and closing of the switch valve and the speed of the flow pump, and receiving data recorded by the flow meter and pressure sensor.

6. A pressure reducer testing system simulating real working conditions according to claim 5, characterized in that: The simulation box is a metal spherical storage box.

7. A method for testing a pressure reducer simulating real working conditions based on a pressure reducer testing system simulating real working conditions according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: Close the on-off valve, pre-fill the downstream working condition simulation device with a volume of V1 of liquid working fluid, the remaining air cushion volume in the device is V2, and adjust the simulation box posture to the required angle; Set up the test operating profiles of the switch valve and flow pump, and connect the test system pipelines; After the gas source pressure reaches the required working condition, the switch valve and flow pump work according to the test working condition profile, the high-pressure gas enters the tested pressure reducer, and after being reduced in pressure, it enters the downstream working condition simulation device, and the flow pump extracts the liquid working medium; Record and save the data collected by the pressure sensor and flow meter, and organize the test data.

8. A pressure reducer testing method simulating real working conditions according to claim 7, characterized in that: The V1 and V2 are set according to the downstream working conditions that meet the test requirements of the pressure reducer under test.

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