Pneumatic test bench

Abstract

The present application provides a pneumatic test bench, comprising: a pressure reducing valve arranged on a main air source input line; a time relay, a solenoid valve and a gas-controlled valve arranged on an action test circuit, and the time relay, the solenoid valve and the gas-controlled valve are connected in sequence; a precision pressure gauge is arranged on a pressure-maintaining test circuit; the pneumatic test bench provided by the present application integrates action experiments and sealing tests, which can, on the one hand, test the sealing performance of the actuator, and on the other hand, test the action time of the fast-acting actuator.

Description

Technical Field

[0001] The present application relates to the technical field of actuator testing, and in particular to a pneumatic test bench. Background Art

[0002] In the field of industrial automation, with the continuous advancement of production technology and the increasing requirements of products, the detection and control of product quality has become particularly important. However, traditional detection methods often have problems such as low detection efficiency, low accuracy, and complex operation, and cannot meet the needs of modern production for high quality and high efficiency. Especially in the production and testing process of pneumatic actuators, the actuator's action time and sealing performance are two key performance indicators, which are directly related to the reliability and service life of the product.

[0003] Traditional pneumatic actuator testing methods mostly use manual operations, which detect the sealing performance and action time of the actuator by manually switching the test circuit and observing the pressure gauge readings. This method is not only inefficient, but also due to the existence of human factors, the test results often have large errors. At the same time, for the testing of fast-acting actuators, traditional methods are difficult to accurately capture subtle changes in action time, which affects the accuracy of the test results. Utility Model Content

[0004] The purpose of the present application is to provide a pneumatic test bench which can, on the one hand, detect the sealing performance of the actuator and, on the other hand, test the action time of the fast-acting actuator.

[0005] In order to achieve the above-mentioned objectives, the present application provides a pneumatic test bench, comprising: a pressure reducing valve arranged on the main air source input line; a time relay, a solenoid valve and a gas-controlled valve arranged on an action test circuit, and the time relay, the solenoid valve and the gas-controlled valve are connected in sequence; and a precision pressure gauge arranged on the pressure maintaining test circuit.

[0006] In order to more accurately display the pressure of the gas source input main line and facilitate monitoring by staff, as an option of the pneumatic test bench of the present application, a pressure gauge is also provided on the gas source input main line, and the pressure gauge is connected to the pressure reducing valve in sequence.

[0007] The pneumatic test bench provided in the present application can perform action tests on single-acting and double-acting actuators. When used for an action test of a single-acting actuator, one of the output manual valves can be locked. As an option of the pneumatic test bench in the present application, a first manual valve and a second manual valve are also provided on the action test circuit, wherein one end of the first manual valve is connected to the air-controlled valve; one end of the second manual valve is also connected to the air-controlled valve.

[0008] In order to perform pneumatic actions in the action test circuit, as an option of the pneumatic test bench of the present application, a first actuator is also provided on the action test circuit, wherein the other end of the first manual valve is connected to the first actuator; the other end of the second manual valve is also connected to the first actuator.

[0009] In order to control the on and off of the pressure-maintaining test circuit in real time and ensure the stability of the system pressure during the test, as an option of the pneumatic test bench of this application, a stop valve is also provided on the pressure-maintaining test circuit, and the precision pressure gauge is connected to the stop valve in sequence.

[0010] In order to provide additional operational flexibility and better control the on-off of the pressure-maintaining test circuit, as an option of the pneumatic test bench of the present application, a third manual valve is also provided on the pressure-maintaining test circuit, wherein one end of the third manual valve is connected to the precision pressure gauge.

[0011] In order to perform pneumatic actions in the pressure-maintaining test circuit, as an option of the pneumatic test bench of the present application, a second actuator is also provided on the pressure-maintaining test circuit, wherein the second actuator is connected to the other end of the third manual valve.

[0012] In order to provide power to the electrical components in the pneumatic test bench, as an option of the pneumatic test bench of the present application, the pneumatic test bench further includes a power input.

[0013] The beneficial effects of this application are:

[0014] The pneumatic test bench provided by the technical solution of the present application includes: a pressure reducing valve arranged on the main air source input line, which is used to adjust the air pressure entering the pneumatic test bench to ensure the stability and safety of the air pressure during the test; a time relay, a solenoid valve and a gas-controlled valve arranged on the action test circuit, and the time relay, the solenoid valve and the gas-controlled valve are connected in sequence, wherein the time relay controls the duration of the action test to ensure the accuracy and consistency of the test time, the solenoid valve controls the on and off of the airflow according to the instruction of the time relay to realize the automation of the action test, and the gas-controlled valve is controlled by the air pressure signal to further ensure the precise control of the action test; a precision pressure gauge arranged on the pressure holding test circuit can perform an air tightness test on the actuator, and is used to accurately measure and display the system pressure to evaluate the sealing performance of the product; the pneumatic test bench provided by the present application integrates the action experiment and the sealing test, which can perform the sealing performance test on the actuator on the one hand, and test the action time of the fast-acting actuator on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the pneumatic control principle structure of a pneumatic test bench;

[0016] Figure 2 It is a physical schematic diagram of a pneumatic test bench;

[0017] Description of reference numerals:

[0018] 100, gas source input main circuit; 101, pressure reducing valve; 102, pressure gauge;

[0019] 200, action test circuit; 201, time relay; 202, solenoid valve; 203, air control valve; 204, first manual control valve; 205, second manual control valve; 206, first actuator;

[0020] 300. Pressure-maintaining test circuit; 301. Stop valve; 302. Precision pressure gauge; 303. Third manual valve; 304. Second actuator. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] The inventor of this application proposed a pneumatic test bench, referring to Figure 1-Figure 2 , Figure 1 A schematic diagram of the pneumatic control principle structure of a pneumatic test bench provided in an embodiment of the present application; Figure 2 A schematic diagram of a pneumatic test bench provided in an embodiment of the present application.

[0023] Reference Figure 1-Figure 2The pneumatic test bench provided in the present application includes: a pressure reducing valve 101 arranged on the air source input main circuit 100, the pressure reducing valve 101 is used to adjust the air pressure entering the pneumatic test bench to ensure the stability and safety of the air pressure during the test; a time relay 201, a solenoid valve 202 and a gas control valve 203 are arranged on the action test circuit 200, and the time relay 201, the solenoid valve 202 and the gas control valve 203 are connected in sequence, wherein the automated circulation loop switching design is convenient for product action testing, life experiments and other functions, and the time relay 201 controls the duration of the action test to ensure the accuracy and consistency of the test time, and the automatic cycle action time can be set by the time relay 201 during the test; the precision pressure gauge 301 arranged on the pressure holding test circuit 300 can perform an air tightness test on the actuator, and is used to accurately measure and display the system pressure to evaluate the sealing performance of the product. Optionally, an integrated digital millisecond meter can solve the problem that fast action time is difficult to accurately test.

[0024] Continue to refer to Figure 1-Figure 2 A pressure gauge 102 is also provided on the gas source input main circuit 100, and the pressure gauge 102 is connected to the pressure reducing valve 101 in sequence. The pressure gauge 102 is used to monitor the pressure of the gas source input main circuit in real time to ensure that the gas pressure is within an appropriate range.

[0025] Continue to refer to Figure 1-Figure 2 The action test circuit 200 is also provided with a first manual valve 204 and a second manual valve 205, wherein one end of the first manual valve 204 is connected to the air control valve 203; one end of the second manual valve 205 is also connected to the air control valve 203. The first manual valve 204 and the second manual valve 205 are used to manually control the on and off of the air flow, provide emergency operation or manual test functions, and can perform action tests on single-acting and double-acting actuators. When used for an action test of a single-acting actuator, one of the output manual valves can be locked.

[0026] Continue to refer to Figure 1-Figure 2 A first actuator 206 is also provided on the action test circuit 200, wherein the other end of the first manual valve 204 is connected to the first actuator 206; the other end of the second manual valve 205 is also connected to the first actuator 206, for performing pneumatic actions in the action test circuit.

[0027] Continue to refer to Figure 1-Figure 2 The pressure-maintaining test circuit 300 is also provided with a stop valve 302, and the precision pressure gauge 301 is connected to the stop valve 302 in sequence to control the on-off of the pressure-maintaining test circuit in real time to ensure the stability of the system pressure during the test.

[0028] Continue to refer to Figure 1-Figure 2 A third manual valve 303 is also provided on the pressure-maintaining test circuit 300, wherein one end of the third manual valve 303 is connected to the precision pressure gauge 301, providing additional operational flexibility and better controlling the on-off of the pressure-maintaining test circuit.

[0029] Continue to refer to Figure 1-Figure 2 A second actuator 304 is also provided on the pressure-maintaining test circuit 300, wherein the second actuator 304 is connected to the other end of the third manual valve 303 and is used to perform pneumatic actions in the pressure-maintaining test circuit.

[0030] Continue to refer to Figure 1-Figure 2 The pneumatic test bench also includes a power input to provide power to electrical components in the pneumatic test bench.

[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] 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.

[0033] In the description of the embodiments of the present application, technical terms such as "first" and "second" 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.

[0034] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "one end" and "the other end" are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "set", "provided with", "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 directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A pneumatic test bench, characterized in that: include: A pressure reducing valve (101) provided on the gas source input main circuit (100); A time relay (201), a solenoid valve (202) and a gas-controlled valve (203) are arranged on an action test circuit (200), and the time relay (201), the solenoid valve (202) and the gas-controlled valve (203) are connected in sequence; A precision pressure gauge (301) is provided on the pressure-maintaining test circuit (300).

2. The pneumatic test bench according to claim 1, characterized in that: A pressure gauge (102) is also provided on the gas source input main line (100), and the pressure gauge (102) is connected to the pressure reducing valve (101) in sequence.

3. The pneumatic test bench according to claim 1, characterized in that: The action test circuit (200) is also provided with a first manual valve (204) and a second manual valve (205), wherein: One end of the first manual control valve (204) is connected to the air control valve (203); One end of the second manual valve (205) is also connected to the air control valve (203).

4. The pneumatic test bench according to claim 3, characterized in that: The action test circuit (200) is also provided with a first actuator (206), wherein: The other end of the first manual valve (204) is connected to the first actuator (206); The other end of the second manual valve (205) is also connected to the first actuator (206).

5. The pneumatic test bench according to claim 1, characterized in that: The pressure-maintaining test circuit (300) is also provided with a stop valve (302), and the precision pressure gauge (301) is connected to the stop valve (302) in sequence.

6. The pneumatic test bench according to claim 5, characterized in that: The pressure-maintaining test circuit (300) is also provided with a third manual valve (303), wherein one end of the third manual valve (303) is connected to the precision pressure gauge (301).

7. The pneumatic test bench according to claim 6, characterized in that: The pressure-maintaining test circuit (300) is also provided with a second actuator (304), wherein the second actuator (304) is connected to the other end of the third manual valve (303).

8. The pneumatic test bench according to any one of claims 1 to 7, characterized in that: The pneumatic test stand also includes a power input.

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