Compressor valve performance testing device and testing method

Abstract

The invention discloses a compressor valve performance test device and a test method; the compressor valve performance test device comprises a sealing test component, a pressure regulating component, an excitation component, a response measurement component, and a computer control component, wherein the pressure regulating component is connected with the sealing test component through a pipeline, the excitation component comprises an acoustic excitation component and an airflow pulse controller installed on the pipeline, the response measurement component comprises a laser displacement sensor installed inside the sealing test component, a strain gauge pasted on the surface of the compressor valve, and a data set acquisition card connecting the laser displacement sensor and the strain gauge, and the computer control component comprises a computer, and the computer is connected with the pressure regulating component, the excitation component, and the response measurement component; the invention can simultaneously test the air tightness and resonance characteristics of the compressor valve, and can perform multi-dimensional performance analysis on the compressor valve, thereby greatly improving the test efficiency and reducing the interference of human factors on data processing.

Description

Technical Field

[0001] The invention relates to the field of compressor valve plate testing equipment, and in particular to a compressor valve plate performance testing device and a testing method. Background Art

[0002] The compressor valve is one of the key components of the compressor. Through performance testing, it is possible to detect whether the valve meets the quality standards required by the design. The performance of the valve directly affects the working efficiency of the compressor. For example, in the air tightness test, if the valve is not airtight, gas leakage will occur when the compressor is working. This will cause the compressor to consume more energy to compress the gas, reducing the efficiency of the compressor. By conducting an air tightness test on the valve, valves with good air tightness can be screened out to ensure that the compressor can effectively compress and transport gas during operation and improve its working efficiency.

[0003] The results of the performance test can provide feedback for the product design of the valve plate. By testing the resonance characteristics of the valve plate, the vibration of the valve plate at different frequencies can be understood. If it is found that the valve plate is prone to resonance at a certain operating frequency, it may cause damage to the valve plate or performance degradation. This can provide information for product designers to optimize the structure, material or size of the valve plate to avoid the occurrence of resonance, thereby improving the performance of the valve plate. Based on this, the present invention discloses a compressor valve plate performance testing device and testing method, which can test the air tightness and resonance characteristics of the compressor valve plate. Summary of the invention

[0004] The object of the present invention is to provide a compressor valve performance testing device and testing method to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the present invention is implemented by the following technical means:

[0006] In a first aspect, the present invention discloses a compressor valve performance testing device, comprising:

[0007] Sealing test components provide a sealed air tightness test and resonance characteristic test environment for the compressor valve;

[0008] A pressure regulating component is connected to the sealing test component through a pipeline to provide a monitorable and adjustable high-pressure gas source to the sealing test component;

[0009] The excitation component includes an acoustic excitation component installed on one side of the sealing test component, and an airflow pulse controller installed on the pipeline for adjusting the air intake valve to generate airflow excitation;

[0010] A response measurement component, including a laser displacement sensor installed inside the sealing test component for measuring the displacement change of the valve plate under excitation, a strain gauge pasted on the surface of the compressor valve plate for measuring the strain change of the compressor, and a data set acquisition card for connecting the laser displacement sensor and the strain gauge;

[0011] The computer control component includes a computer installed with test software, and the computer is connected with the pressure regulating component, the excitation component, and the response measuring component.

[0012] Furthermore, the sealing test component includes a test cabinet installed on a frame, a test base is installed on the bottom surface of the test cabinet, an upper surface of the test base is provided with an installation groove for installing a fixing clamp of a valve plate, a fixing clamp is detachably installed in the installation groove, a valve plate valve group is clamped in the fixing clamp, a sealing gasket is provided on the upper surface of the test base for cooperating with the fixing frame, a sealing top cover with a raised test cavity is detachably provided on the sealing gasket, the sealing top cover is fastened to the test base by bolts, a connecting pipe opening communicating with the test cavity is provided on the sealing top cover, and the connecting pipe opening is connected to a pipe passing through the test cabinet through a connecting pipe.

[0013] Furthermore, the pressure regulating component includes a high-pressure air compressor, which is connected to a connecting pipe through a pipe, and a group of pressure regulating valves and no less than one group of precision pressure gauges are provided on the pipe.

[0014] Furthermore, the excitation component includes an acoustic excitation component and an airflow pulse controller. The acoustic excitation component is arranged on one side of the test base in the sealing test component. The acoustic excitation component includes an upper mounting block and a lower mounting block installed on the upper and lower surfaces inside the test cabinet. A vertically arranged mounting rod is provided between the upper mounting block and the lower mounting block. A movable sleeve is movably installed on the mounting rod, and a speaker facing the test base is installed on the movable sleeve. The airflow pulse controller is installed on one side of the test cabinet and is connected with the pipeline.

[0015] In a second aspect, the present invention discloses a method for testing the performance of a compressor valve plate, comprising the following steps:

[0016] (1) Install the valve plate of the compressor to be tested in the sealing test chamber, ensure that it is firmly installed and well sealed, turn on the high-pressure air compressor, adjust the gas pressure entering the sealing test chamber to the set value through the pressure regulating valve, and then turn off the high-pressure air compressor to keep the gas pressure in the sealing test chamber stable, observe the reading of the precision pressure gauge, record the initial pressure value, and continue to observe the pressure change within the specified time;

[0017] (2) Then, the speaker is turned on, and the computer control system controls the speaker to emit sound waves of different frequencies. At the same time, the displacement and strain changes of the valve plate under the excitation of sound waves of different frequencies are measured by the laser displacement sensor and strain gauge;

[0018] (3) Use an airflow pulse controller to control the rapid opening and closing of the intake valve to generate a pulsed airflow to excite the valve plate. Also, use a laser displacement sensor and a strain gauge to measure the response of the valve plate.

[0019] (4) The above data are collected by computer, and the displacement and strain amplitude data changing with the excitation frequency are recorded. The resonant frequency and resonant bandwidth of the valve plate are determined by data analysis, and the resonant characteristics are determined by analysis.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention can simultaneously test the air tightness and resonance characteristics of the compressor valve plate, can perform multi-dimensional performance analysis on the compressor valve plate, and can accurately determine whether the air tightness of the valve plate is good through precise pressure control and measurement, and more accurately evaluate the resonance characteristics and response of the valve plate under actual working conditions, thereby greatly improving the test efficiency and reducing the interference of human factors on data processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the product structure of an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of the product according to the embodiment of the present invention;

[0024] Figure 3 This is a partial structural diagram of a product according to an embodiment of the present invention;

[0025] Figure 4 For the embodiment of the present invention Figure 3 AA section structural diagram;

[0026] Figure 5 This is a schematic diagram of the partial structure explosion of the product of the embodiment of the present invention;

[0027] Figure 6 This is a partial structural diagram of a product according to an embodiment of the present invention;

[0028] Figure 7 This is a partial structural diagram of a product according to an embodiment of the present invention;

[0029] Figure 8 It is a schematic diagram of the connection of some components in the present invention. DETAILED DESCRIPTION

[0030] The following is a detailed description of the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments and drawings are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. The accompanying drawings only schematically show the parts related to the technical solution of the present application, and they do not represent the actual structure of the product.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0032] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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 connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] In this embodiment, in a first aspect, the present invention discloses a compressor valve performance testing device, comprising:

[0038] The sealing test component 100 provides a sealed air tightness test and resonance characteristic test environment for the compressor valve plate;

[0039] The pressure regulating component 200 is connected with the sealing test component 100 through a pipeline to provide the sealing test component 100 with a monitorable and adjustable high-pressure gas source;

[0040] The excitation component 300 includes an acoustic excitation component 310 installed on one side of the sealing test component 100, and an airflow pulse controller 320 installed on the pipeline for adjusting the air intake valve to generate airflow excitation;

[0041] The response measurement component 400 includes a laser displacement sensor 410 installed inside the sealing test component 100 for measuring the displacement change of the valve plate under excitation, a strain gauge 420 attached to the surface of the compressor valve plate for measuring the strain change of the compressor, and a data acquisition card 430 for connecting the laser displacement sensor 410 and the strain gauge 420;

[0042] The computer control component 500 includes a computer 510 installed with test software. The computer 510 is connected to the pressure regulating component 200 , the excitation component 300 , and the response measuring component 400 .

[0043] From the above description, it can be seen that the equipment can test the air tightness and resonance characteristics of the compressor valve plate at the same time. These two properties are crucial for the normal operation of the valve plate in the compressor. For example, in the actual operation of the compressor, the valve plate must not only ensure good air tightness to prevent gas leakage, but also avoid excessive vibration due to resonance, resulting in fatigue damage or performance degradation. Through synchronous testing, the performance of the valve plate can be evaluated more comprehensively, reducing the time and resource waste that may be caused by separate testing.

[0044] In the resonance characteristic test, acoustic excitation and airflow excitation are combined, and the response of the valve plate is measured from the displacement and strain dimensions through the laser displacement sensor 410 and the strain gauge 420. This multi-dimensional testing method can provide a deeper understanding of the vibration characteristics of the valve plate under different excitation conditions, including information such as the resonance frequency, resonance bandwidth, and stress distribution in the resonance state, providing rich data for the performance evaluation of the valve plate.

[0045] In one or more possible embodiments of the present invention, the sealing test component 100 includes a test cabinet 110 installed on a frame, a test base 120 is installed on the bottom surface of the test cabinet 110, and an installation groove 121 for installing a fixing clip 130 of a valve plate is opened on the upper surface of the test base 120. The fixing clip 130 is detachably installed in the installation groove 121, and a valve plate valve group is clamped in the fixing clip 130. A sealing gasket 140 cooperating with the fixing clip 130 is provided on the upper surface of the test base 120, and a sealing top cover 150 with a convex test cavity is detachably provided on the sealing gasket 140, and a sealing top cover 150 and the test base 120 are connected by The sealing top cover 150 is fastened with bolts and is provided with a connecting pipe port 160 communicating with the test cavity. The connecting pipe port 160 is connected with a pipe passing through the test cabinet 110 through a connecting pipe 170. The sealing top cover 150 cooperates with the sealing gasket 140 and the test base 120 to form a sealed test cavity. In combination with the above-mentioned laser displacement sensor 410 and strain gauge 420, the displacement change of the valve plate surface can be measured with high precision, avoiding the errors that may exist in traditional measurement methods. The strain gauge 420 can directly measure the strain of the valve plate, which is very accurate for analyzing the stress state of the valve plate during the vibration process. Combined with professional data acquisition and analysis software, the accuracy of the resonance characteristic test can be improved.

[0046] In one or more possible embodiments of the present invention, the pressure regulating component 200 includes a high-pressure air compressor 210, which is connected to the connecting pipe 170 through a pipe, and a group of pressure regulating valves 220 and at least one group of precision pressure gauges 230 are provided on the pipe. The high-pressure air compressor 210 and the pressure regulating valve 220 can accurately control the gas pressure in the sealing test chamber; the existence of the precision pressure gauge 230 can monitor the pressure change in real time and accurately, which is crucial to the accuracy of the air tightness test. For example, when detecting a small leak, the precise pressure measurement can more keenly capture the pressure drop, thereby accurately judging whether the air tightness of the valve plate is good.

[0047] In one or more possible embodiments of the present invention, the excitation component 300 includes an acoustic excitation component 310 and an airflow pulse controller 320. The acoustic excitation component 310 is arranged on one side of the test base 120 in the sealing test component 100. The acoustic excitation component 310 includes an upper mounting block 311 and a lower mounting block 312 installed on the upper and lower surfaces inside the test cabinet 110. A vertically arranged mounting rod 313 is provided between the upper mounting block 311 and the lower mounting block 312. A movable sleeve 314 is movably installed on the mounting rod 313. A speaker 315 facing the test base 120 is installed on the movable sleeve 314. The airflow pulse controller 320 is installed on one side of the test cabinet 110 and is connected to the pipeline. The airflow excitation generated by the airflow pulse controller 320 can well simulate the airflow impact on the valve plate during the operation of the compressor. This simulation method makes the test environment closer to reality. The actual working environment can more accurately evaluate the resonance characteristics and response of the valve plate under actual working conditions; for example, during the suction and exhaust process of the compressor, the valve plate will be subjected to the pulse impact of the airflow. The performance of the valve plate in this case can be better understood through the airflow excitation test; when the actual compressor is running, the surrounding acoustic environment may have a certain impact on the valve plate. By emitting sound waves of different frequencies through the speaker 315 for excitation, the response of the valve plate in the acoustic environment can be studied, and the evaluation of the valve plate performance can be further improved. The measurement data of the laser displacement sensor 410 and the strain gauge 420 are transmitted to the control system of the computer 510 through the data acquisition card 430. The professional test software is used for automatic data collection and analysis. The operator only needs to set the test parameters, and the software can automatically complete the data collection, processing and result display, which greatly improves the test efficiency and reduces the interference of human factors on data processing.

[0048] In a second aspect, the present invention discloses a method for testing the performance of a compressor valve plate, comprising the following steps:

[0049] (1) Install the valve plate of the compressor to be tested in the sealing test chamber, ensure that it is firmly installed and well sealed, turn on the high-pressure air compressor 210, adjust the gas pressure entering the sealing test chamber to the set value through the pressure regulating valve 220, and then turn off the high-pressure air compressor 210 to keep the gas pressure in the sealing test chamber stable, observe the reading of the precision pressure gauge 230, record the initial pressure value, and continue to observe the pressure change within the specified time;

[0050] (2) Then, the speaker 315 is turned on, and the computer 510 control system controls the speaker 315 to emit sound waves of different frequencies. At the same time, the displacement and strain changes of the valve plate under the excitation of sound waves of different frequencies are measured by the laser displacement sensor 410 and the strain gauge 420;

[0051] (3) Using the airflow pulse controller 320 to control the rapid opening and closing of the intake valve, generating a pulsed airflow to excite the valve plate, and also using the laser displacement sensor 410 and the strain gauge 420 to measure the response of the valve plate;

[0052] (4) The above data are collected by computer 510, and the data of displacement and strain amplitude changing with the excitation frequency are recorded. The resonant frequency and resonant bandwidth of the valve plate are determined by data analysis, and the resonant characteristics are determined by analysis.

[0053] The specific embodiments disclosed in the present invention fall within the protection scope of the claims of the present invention, and are the specific lower-level implementation scope of the characteristic part of the present invention. The protection content of the specific embodiments is merely an explanation of the protection scope of the claims of the present invention. The protection scope of the present invention is not limited to the protection content of the specific embodiments, and the protection content of the specific embodiments should not be understood as a limitation on the protection scope of the claims of the present invention.

[0054] The product structure connection relationships that fall within the protection scope of the present invention shall fall within the protection content of the present invention; without departing from the protection essence of the present invention, conventional technical improvements are made to the structure of product components, such as improvements to the partial structure of the product in the specific embodiments of the present invention, which will also fall within the protection essence of the present invention.

[0055] The use of "a" and "an / kind" to describe elements of the present invention is only for convenience and to give a general description of the present invention. Unless otherwise clearly stated, the description should be understood to include one / kind or at least one / kind.

Claims

1. A compressor valve performance testing device, characterized in that: include: A sealing test component (100) provides a sealed air tightness test and resonance characteristic test environment for the compressor valve plate; A pressure regulating component (200) is connected to the sealing test component (100) through a pipeline to provide the sealing test component (100) with a monitorable and adjustable high-pressure gas source; The excitation component (300) comprises an acoustic excitation component (310) installed on one side of the sealing test component (100), and an airflow pulse controller (320) installed on the pipeline for adjusting the air intake valve to generate airflow excitation; The response measurement component (400) comprises a laser displacement sensor (410) installed inside the sealing test component (100) for measuring the displacement change of the valve plate under excitation, a strain gauge (420) attached to the surface of the compressor valve plate for measuring the strain change of the compressor, and a data acquisition card (430) for connecting the laser displacement sensor (410) and the strain gauge (420); The computer control component (500) includes a computer (510) installed with test software. The computer (510) is connected to the pressure regulating component (200), the excitation component (300), and the response measuring component (400).

2. A compressor valve performance testing device according to claim 1, characterized in that: The sealing test component (100) comprises a test cabinet (110) mounted on a frame, a test base (120) being mounted on the inner bottom surface of the test cabinet (110), a mounting groove (121) for mounting a fixing clamp (130) for a valve plate being provided on the upper surface of the test base (120), a fixing clamp (130) being detachably mounted in the mounting groove (121), a valve plate valve group being clamped in the fixing clamp (130), and a valve plate valve group being clamped in the upper surface of the test base (120). A sealing gasket (140) is provided to cooperate with the fixing clamp (130); a sealing top cover (150) having a protruding test cavity is detachably provided on the sealing gasket (140); the sealing top cover (150) is fastened to the test base (120) by bolts; a connecting pipe opening (160) communicating with the test cavity is provided on the sealing top cover (150); the connecting pipe opening (160) is communicated with a pipe passing through the test cabinet (110) via a connecting pipe (170).

3. A compressor valve performance testing device according to claim 1, characterized in that: The pressure regulating component (200) comprises a high-pressure air compressor (210), wherein the high-pressure air compressor (210) is connected to a connecting pipeline (170) via a pipeline, and a group of pressure regulating valves (220) and at least one group of precision pressure gauges (230) are arranged on the pipeline.

4. A compressor valve performance testing device according to claim 1, characterized in that: The excitation component (300) comprises an acoustic excitation component (310) and an airflow pulse controller (320); the acoustic excitation component (310) is arranged on one side of a test base (120) in a sealing test component (100); and the airflow pulse controller (320) is installed on one side of a test cabinet (110) and is connected to a pipeline.

5. A compressor valve performance testing device according to claim 4, characterized in that: The acoustic excitation component (310) comprises an upper mounting block (311) and a lower mounting block (312) which are mounted on the upper and lower surfaces inside the test cabinet (110); a vertically arranged mounting rod (313) is arranged between the upper mounting block (311) and the lower mounting block (312); a movable sleeve (314) is movably mounted on the mounting rod (313); and a loudspeaker (315) facing the test base (120) is mounted on the movable sleeve (314).

6. A method for testing the performance of a compressor valve, characterized in that: The steps include: (1) Install the valve plate of the compressor to be tested in the sealing test chamber, ensure that it is firmly installed and well sealed, turn on the high-pressure air compressor (210), adjust the pressure of the gas entering the sealing test chamber to a set value through the pressure regulating valve (220), and then turn off the high-pressure air compressor (210) to keep the gas pressure in the sealing test chamber stable, observe the reading of the precision pressure gauge (230), record the initial pressure value, and continuously observe the pressure change within a specified time; (2) Then, the speaker (315) is turned on, and the computer (510) controls the speaker (315) to emit sound waves of different frequencies. At the same time, the displacement and strain changes of the valve plate under the excitation of the sound waves of different frequencies are measured by the laser displacement sensor (410) and the strain gauge (420); (3) Using the airflow pulse controller (320) to control the rapid opening and closing of the intake valve, generating a pulsed airflow to excite the valve plate, and also using the laser displacement sensor (410) and the strain gauge (420) to measure the response of the valve plate; (4) The above data are collected by a computer (510), and the data of displacement and strain amplitude changing with the excitation frequency are recorded. The resonant frequency and resonant bandwidth of the valve plate are determined by data analysis, and the resonant characteristics are determined by analysis.

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