Automatic air supply system for actuating device

Abstract

The utility model provides an automatic air supply system for an actuating device, which comprises a low-pressure air control unit and an air supply unit which are connected with each other, the air supply unit comprises an air supply main pipeline and a plurality of groups of output pipelines connected in parallel, one end of each output pipeline is connected with the air supply main pipeline, and the other end of each output pipeline is provided with a test joint; the gas supply main pipeline comprises a high-pressure gas cylinder I and a pressure reducing valve which are connected with each other, pneumatic stop valves are arranged on the output pipelines, and the low-pressure pneumatic control unit is connected with the pressure reducing valve and the pneumatic stop valves; and the low-pressure pneumatic control unit and the pressure reducing valve are connected with an upper computer. According to the utility model, compressed air is provided by the high-pressure gas cylinder I, after the pressure is regulated by the pressure reducing valve, the compressed air with a certain pressure is introduced into the inner cavity of the actuating device, the introduced pressure is gradually regulated, the actuating device is pushed to work, and the change of pressure data in the whole process is conveniently recorded, so that the actuating device is tested; the pressure of the air supply unit and the on-off of a pipeline are controlled in a pneumatic control mode, and the device can be suitable for a higher pressure range; and through a plurality of output pipelines connected in parallel, batch testing is facilitated, so that different testing requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of pneumatics technology, and in particular to an automatic air supply system for an actuating device. Background Technology

[0002] A gas supply system is a system that releases gas from storage equipment and delivers it to a designated location under given time and conditions. Gas supply systems are widely used in various gas storage and pneumatic systems.

[0003] An actuator is a type of hydraulic and pneumatic component. With the development of China's industry, especially the rapid advancement of aerospace technology, the demand for various actuators is increasing. However, current technology lacks an air supply system for actuators that facilitates performance testing.

[0004] Chinese utility model patent CN206801988U, published on December 26, 2017, discloses a gas power device capable of precise pressure control. The device includes a gas cylinder, a booster pump, a medium-pressure shut-off valve, a filter, a pressure reducing valve, a high-pressure shut-off valve, and a pressure port, connected in sequence. An electric contact pressure gauge, a medium-pressure relief valve, a medium-pressure overflow valve, and a high-pressure gas storage tank are connected to the pipeline between the booster pump and the medium-pressure shut-off valve. A medium-pressure gauge is installed on the pipeline connecting the pressure reducing valve and the filter. A pipe connects the high-pressure valve and the pressure port. The system is connected to a high-pressure gas booster cylinder, a high-pressure gauge, and a high-pressure relief valve. This invention uses a hydraulic station to drive a booster pump to store gas in a high-pressure storage tank. During testing, the pressure is adjusted from 0 to 35 MPa via a pressure reducing valve and the high-pressure gas booster cylinder. When the test pressure exceeds 35 MPa, the high-pressure gas booster cylinder is manually rotated to achieve the same pressure adjustment. This system ensures stability during gas pressurization and depressurization, reduces noise and vibration, and improves control accuracy. However, this patent relies on manual control, which poses safety risks at higher pressures and does not support batch testing. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model proposes an automatic air supply system for actuating devices, which solves the safety risks associated with manual control of gas power devices for pneumatic components in the prior art.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] An automatic air supply system for an actuator includes a low-pressure air control unit and an air supply unit connected to each other. The air supply unit includes a main air supply line and multiple sets of parallel output lines. One end of each output line is connected to the main air supply line, and the other end is equipped with a test connector for connecting the actuator. The main air supply line includes a high-pressure gas cylinder and a pressure reducing valve connected to each other. Each output line is equipped with a pneumatic shut-off valve. The low-pressure air control unit is connected to the pressure reducing valve and the pneumatic shut-off valve. The low-pressure air control unit and the pressure reducing valve are connected to a host computer. This invention provides compressed air from the high-pressure gas cylinder. After pressure adjustment by the pressure reducing valve, compressed air at a certain pressure is introduced into the inner cavity of the actuator. The pressure is gradually adjusted to drive the actuator. It is convenient to record the pressure data changes throughout the process, thereby testing the actuator. This invention uses pneumatic control, with the low-pressure air control unit controlling the pressure of the air supply unit and the on / off of the lines, making it applicable to a higher pressure range. This invention uses multiple parallel output lines to facilitate batch testing to meet different testing needs.

[0008] Furthermore, the main gas supply line is also equipped with a booster device and a second high-pressure gas cylinder. The first high-pressure gas cylinder is connected to the second high-pressure gas cylinder through the booster device, and the pressure reducing valve is located downstream of the second high-pressure gas cylinder.

[0009] Furthermore, a filter is provided between the high-pressure gas cylinder one and the pressurization device, and a filter is provided between the high-pressure gas cylinder two and the pressure reducing valve.

[0010] Furthermore, the pressure reducing valve includes a pressure reducing valve one and a pressure reducing valve two connected in parallel, and one part of the multiple output pipelines is connected to pressure reducing valve one and the other part is connected to pressure reducing valve two.

[0011] Furthermore, each set of output pipelines is connected in parallel with a manual control pipeline. The manual control pipeline is equipped with a manual shut-off valve four. The two ends of the manual control pipeline are connected to the two ends of the output pipeline respectively, so that the manual shut-off valve four and the pneumatic shut-off valve are connected in parallel.

[0012] Furthermore, each manual control line is connected to an output pressure relief line, and a manual shut-off valve is installed on the output pressure relief line.

[0013] Furthermore, each output pipeline is equipped with a second digital pressure gauge, which is located between the end of the manual control pipeline and the test connector.

[0014] Furthermore, a pressure sensor and a safety valve are connected between the pressure reducing valve and the output pipeline; a manual shut-off valve is provided between the filter and the pressure reducing valve; a safety valve is provided between the high-pressure gas cylinder and the filter; and a digital pressure gauge is provided between the booster device and the high-pressure gas cylinder.

[0015] Furthermore, a main pressure relief pipeline is connected to the main gas supply pipeline, and a manual shut-off valve three is installed on the main pressure relief pipeline; the high-pressure gas cylinder two is connected to the main gas supply pipeline through a secondary gas pipeline; a manual shut-off valve one and a safety valve one are installed on the secondary gas pipeline.

[0016] Furthermore, the low-pressure pneumatic control unit includes an air compressor, a pneumatic triplet, and a valve island connected in sequence via control pipelines. The valve island is connected to a pressure reducing valve and a pneumatic shut-off valve, respectively. The pneumatic triplet is also connected to a booster device via a solenoid valve.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model uses a booster pump to increase the air source pressure to the maximum. By configuring a pressure regulating valve, the pressure can be adjusted to 0-30MPa and output to the end actuator. After a certain pressure of compressed air is introduced into the inner cavity of the actuator, the actuator is driven to work. By collecting and recording the pressure data changes throughout the process, the performance test data of the actuator is formed.

[0019] 2. This utility model uses multiple parallel output pipelines to facilitate batch testing and meet different testing needs;

[0020] 3. This utility model controls the operation of the air compressor, valve island and pressure reducing valve through a host computer to form an automatically controlled low-pressure air control unit, thereby realizing the precise regulation of the pressure testing unit; at the same time, the host computer also records data to form performance test data of the actuation device.

[0021] 4. This utility model adopts a combination of manual and pneumatic control. Pneumatic control facilitates the supply of air for batch control testing processes or scenarios where the continuity of the testing process is required. The manual mode provides operators with a flexible control method, which is suitable for emergency operations when the testing process requires fine adjustment or when the automatic mode fails. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] In the diagram: 1. Pneumatic triplet, 2.1. Solenoid valve one, 2.2. Solenoid valve two, 3. Booster pump, 4. Silencer, 5.1. Digital pressure gauge one, 5.2. Digital pressure gauge two, 6.1. Pressure sensor one, 6.2. Pressure sensor two, 7.1. Safety valve one, 7.2. Safety valve two, 7.3. Safety valve three, 7.4. Safety valve four, 8.1. Manual shut-off valve one, 8.2. Manual shut-off valve two, 8.3. Manual shut-off valve three, 8.4. Manual shut-off valve four, 8.5. Manual shut-off valve five, 9.1. Pressure reducing valve one, 9.2. Pressure reducing valve two, 10. Pneumatic shut-off valve, 11. Test connector, 12.1. Filter one, 12.2. Filter two, 13. Air compressor, 14.1. Gas cylinder one, 14.2. Gas cylinder two, 15. Valve island. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1 As shown in Embodiment 1 of this utility model, an automatic gas supply system for an actuating device includes a low-pressure gas control unit and a gas supply unit connected together. The gas supply unit includes a main gas supply pipeline and multiple sets of parallel output pipelines. One end of each output pipeline is connected to the main gas supply pipeline, and the other end is provided with a test connector 11 for connecting to the actuating device. The main gas supply pipeline includes a high-pressure gas cylinder 14.1 and a pressure reducing valve connected together. Each output pipeline is provided with a pneumatic shut-off valve 10. The low-pressure gas control unit is connected to the pressure reducing valve and the pneumatic shut-off valve 10 to provide driving gas.

[0027] The pressure reducing valves include two pressure reducing valves connected in parallel: pressure reducing valve 9.1 and pressure reducing valve 9.2. Specifically, the main gas supply pipeline includes a main pipeline and two branch pipelines located at the end of the main pipeline. Each of the two branch pipelines is equipped with a pressure reducing valve, namely pressure reducing valve 9.1 and pressure reducing valve 9.2. A portion of the multiple output pipelines is connected to one branch pipeline in series with pressure reducing valve 9.1, and another portion is connected to the other branch pipeline in series with pressure reducing valve 9.2. Both pressure reducing valves 9.1 and 9.2 are connected to valve island 15, which controls their operation.

[0028] Furthermore, the low-pressure pneumatic control unit includes an air compressor 13, a pneumatic triplet 1, and a valve island 15 connected sequentially via control pipelines. In this embodiment, the air compressor 13 serves as the air source for the pneumatic control unit, supplying low-pressure gas to the control process. The pneumatic triplet 1, through precise combination and coordinated operation, achieves purification, filtration, and pressure reduction of the air source. The valve island 15 is connected to a pressure reducing valve and a pneumatic shut-off valve 10 to control the compressed air from the air compressor 13 entering the pressure reducing valve and the pneumatic shut-off valve 10, thereby providing driving gas to the pressure reducing valve and the pneumatic shut-off valve 10.

[0029] In a preferred embodiment, the air compressor 1 outputs compressed gas at a pressure of 0.4 to 0.8 MPa; the pressure range of the pneumatic triplet 1 is 0 to 1 MPa.

[0030] Example 2 differs from Example 1 in that, as Figure 1 As shown, the air compressor 13, valve island 15, and pressure reducing valve are all connected to a host computer. The host computer controls the operation of the air compressor 13, valve island 15, and pressure reducing valve, forming an automatically controlled low-pressure pneumatic control unit, thereby achieving precise regulation of the pressure testing unit. Simultaneously, the host computer also records data, generating performance test data for the actuating device.

[0031] Example 3 differs from Example 2 in that, as Figure 1 As shown, the main gas supply pipeline is also equipped with a booster device and a second high-pressure gas cylinder 14.2. The first high-pressure gas cylinder 14.1 is connected to the second high-pressure gas cylinder 14.2 via the booster device. The first high-pressure gas cylinder 14.1 serves as the gas source for the actuating device. The booster device can pressurize the high-pressure gas from the first high-pressure gas cylinder 14.1 and temporarily store it in the second high-pressure gas cylinder 14.2, serving as a secondary gas source for downstream use.

[0032] Furthermore, the pneumatic triplet 1 is also connected to the booster device. That is, the control pipeline includes a main control pipeline and control branch pipelines connected to the end of the main control pipeline. The air compressor 13 and the pneumatic triplet 1 are sequentially arranged on the main control pipeline, and the valve island 16 is arranged on the first control branch pipeline. The booster device is connected to the second control branch pipeline. A solenoid valve 2.1 is also provided on the second control branch pipeline, located between the pneumatic triplet 1 and the booster device.

[0033] In this embodiment, the pressure of high-pressure gas cylinder 14.1 is no more than 15 MPa. The gas source pressure is increased to a maximum of 40 MPa by a booster device, and the pressurized high-pressure gas is temporarily stored in high-pressure gas cylinder 14.2. The high-pressure gas coming out of high-pressure gas cylinder 14.2 is controlled by a host computer to adjust the output pressure of the output pipeline to 0-30 MPa via a pressure reducing valve, and then output to the end actuator. After a certain pressure of compressed air is introduced into the actuator's internal cavity, the device unlocks, and the compressed air continues to do work, which can drive the counterweight of the actuator to move and fall to the ground for recovery, facilitating the collection and recording of pressure data changes throughout the process.

[0034] The booster device includes a booster pump 3 and a solenoid valve 2.2 connected to the booster pump 3. The booster device adopts a structure found in existing technology. Specifically, the booster device is model DLG-75GG, with a boost ratio of 1:75. Furthermore, a silencer 4 is connected to the booster pump 3.

[0035] Example 4 differs from Example 2 in that, as Figure 1 As shown, a filter 12.1 is provided between the high-pressure gas cylinder 14.1 and the pressurizing device, a digital pressure gauge 5.1 is provided between the pressurizing device and the high-pressure gas cylinder 14.2, and a safety valve 7.2, a filter 12.2 and a manual shut-off valve 8.2 are provided in sequence between the high-pressure gas cylinder 14.2 and the pressure reducing valve.

[0036] Example 5 differs from Example 4 in that, as Figure 1 As shown, each of the two branch lines of the main gas supply line is equipped with a pressure sensor and a safety valve. Specifically, the two branch lines include a first branch line and a second branch line. The first branch line is equipped with the aforementioned pressure reducing valve 9.1, pressure sensor 6.1, and safety valve 7.3 in sequence, while the second branch line is equipped with the aforementioned pressure reducing valve 9.2, pressure sensor 6.2, and safety valve 7.4 in sequence.

[0037] In this embodiment, a total of 6 parallel output pipelines are provided. Three of the output pipelines are connected to the end of the first branch pipeline, and the other three output pipelines are connected to the end of the second branch pipeline.

[0038] Example 6 differs from Example 5 in that, as Figure 1 As shown, each set of output pipelines is equipped with a pneumatic shut-off valve 10 and a digital pressure gauge 5.2 in sequence, and each set of output pipelines is equipped with a test connector 11 at the end for connecting an actuating device.

[0039] Furthermore, each set of output pipelines is connected in parallel with a manual control pipeline. The manual control pipeline is equipped with a manual shut-off valve 8.4. The two ends of the manual control pipeline are connected to the output pipeline at the two ends of the pneumatic shut-off valve 10, so that the manual shut-off valve 8.4 and the pneumatic shut-off valve 10 are connected in parallel.

[0040] Example 7 differs from Example 6 in that, as Figure 1 As shown, all manual control lines are connected to output pressure relief lines, and manual shut-off valves are installed on the output pressure relief lines.

[0041] Example 8 differs from Example 2 in that, as Figure 1 As shown, high-pressure gas cylinder 2 14.2 is connected to the main gas supply line through a secondary gas line; the secondary gas line is equipped with a manual shut-off valve 8.1 and a safety valve 7.1.

[0042] Example 9 differs from Example 1 in that, as Figure 1 As shown, the main gas supply pipeline is connected to a main pressure relief pipeline, and a manual shut-off valve 38.3 is installed on the main pressure relief pipeline.

[0043] Example 10: The working process of each part of this utility model is as follows:

[0044] (1) Gas Source Access and Control: A 15MPa high-pressure gas cylinder 14.1 is used as the gas source and connected to the booster device via a hose. The gas source gas is boosted to a maximum of 40MPa by the booster device. A 20L high-pressure gas cylinder 14.2 is configured at the rear end of the booster device to effectively store and buffer the gas, ensuring stable system pressure. The low-pressure gas control unit is equipped with a small low-pressure air compressor 13, which outputs low-pressure gas of 0-0.8MPa. This gas is used to control the opening and closing of the solenoid valve, and to control the opening and closing of the pressure reducing valve and the pneumatic shut-off valve 10 through the valve island 15, thereby achieving precise control and safe operation of the high-pressure gas and ensuring stable output of the high-pressure gas according to the set requirements.

[0045] (2) Gas source filtration: The high-pressure gas from high-pressure gas cylinder 14.1 first flows through filter 12.1. Filter 12.1 can effectively filter particulate matter and impurities in the gas, preventing them from entering the pressure reducing valve, thereby protecting the pressure reducing valve, extending its service life, and ensuring the stable operation of the pressure reducing valve.

[0046] (3) Pressure setting and output: On the host computer's operating interface, the output pressure can be set within the range of 0 to 30 MPa according to actual needs. After receiving the command, pressure reducing valve 1 (9.1) and pressure reducing valve 2 (9.2) automatically adjust to reduce the pressure of the 40 MPa high-pressure gas to the set pressure and output it stably to meet the diverse pressure requirements of different test scenarios.

[0047] (4) Automatic mode workflow: In automatic mode, the low-pressure gas supplied by the air compressor 13 is automatically controlled by the valve island 15 to open the pneumatic shut-off valve 10, and the high-pressure gas is output to the actuating device through the pneumatic shut-off valve 10 to realize automated gas supply. This mode reduces manual intervention, improves gas supply efficiency and accuracy, and is suitable for batch testing or scenarios with high requirements for the continuity of the testing process.

[0048] (5) Manual Mode Workflow: In manual mode, the operator manually opens shut-off valve 4.4, allowing high-pressure gas to be output to the device under test via these shut-off valves. When the manual mode function is not used, shut-off valve 4.4 must remain closed to prevent gas leakage and ensure system safety. Manual mode provides operators with a flexible control method, suitable for emergency operations when fine adjustments are needed during the testing process or when automatic mode malfunctions.

[0049] (6) Operating status of shut-off valves: Shut-off valve 1 (8.1) and shut-off valve 2 (8.2) are normally open during equipment operation and require no manual intervention. They are only closed after all tests are completed to cut off the gas supply and ensure equipment safety. Shut-off valve 3 (8.3) and shut-off valve 5 (8.5) are normally closed during normal equipment operation and are only opened when specific operational needs require them.

[0050] (7) Test completion procedure: After the test is completed, open stop valve 8.5 and stop valve 8.3 to discharge the gas in the pipeline. After the gas in the pipeline is discharged, disassemble the actuating device to avoid safety hazards.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features thereof, within the spirit and principles of the present invention, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. An automatic air supply system for an actuating device, characterized in that, It includes a low-pressure pneumatic control unit and a gas supply unit connected to each other. The gas supply unit includes a main gas supply pipeline and multiple sets of parallel output pipelines. One end of each output pipeline is connected to the main gas supply pipeline, and the other end is provided with a test connector (11) for connecting an actuating device. The main gas supply pipeline includes a high-pressure gas cylinder (14.1) and a pressure reducing valve connected to each other. Each output pipeline is provided with a pneumatic shut-off valve (10). The low-pressure pneumatic control unit is connected to the pressure reducing valve and the pneumatic shut-off valve (10). The low-pressure pneumatic control unit and the pressure reducing valve are connected to a host computer.

2. The automatic air supply system for an actuating device according to claim 1, characterized in that, The main gas supply line is also equipped with a booster device and a second high-pressure gas cylinder (14.2). The first high-pressure gas cylinder (14.1) is connected to the second high-pressure gas cylinder (14.2) through the booster device, and the pressure reducing valve is located downstream of the second high-pressure gas cylinder (14.2).

3. The automatic air supply system for an actuating device according to claim 2, characterized in that, A filter (12.1) is provided between the high-pressure gas cylinder one (14.1) and the pressurization device, and a filter (12.2) is provided between the high-pressure gas cylinder two (14.2) and the pressure reducing valve.

4. The automatic air supply system for an actuating device according to claim 3, characterized in that, The pressure reducing valve includes a pressure reducing valve one (9.1) and a pressure reducing valve two (9.2) connected in parallel. One part of the multiple output pipelines is connected to the pressure reducing valve one (9.1) and the other part is connected to the pressure reducing valve two (9.2).

5. The automatic air supply system for an actuating device according to claim 4, characterized in that, Each output pipeline is connected in parallel with a manual control pipeline. The manual control pipeline is equipped with a manual shut-off valve four (8.4). The two ends of the manual control pipeline are connected to the output pipeline at the two ends of the pneumatic shut-off valve (10) so that the manual shut-off valve four (8.4) and the pneumatic shut-off valve (10) are connected in parallel.

6. The automatic air supply system for an actuating device according to claim 5, characterized in that, All manual control lines are connected to output pressure relief lines, and manual shut-off valve five (8.5) is installed on the output pressure relief lines.

7. The automatic air supply system for an actuating device according to claim 5 or 6, characterized in that, Each output pipeline is equipped with a digital pressure gauge 2 (5.2), and the digital pressure gauge 2 (5.2) is located between the end of the manual control pipeline and the test connector (11).

8. The automatic air supply system for an actuating device according to any one of claims 4 to 6, characterized in that, Pressure sensor 1 (6.1) and safety valve 3 (7.3) are connected between the pressure reducing valve and the output pipeline; manual shut-off valve 2 (8.2) is provided between filter 2 (12.2) and pressure reducing valve; safety valve 2 (7.2) is provided between high pressure cylinder 2 (14.2) and filter 2 (12.2); digital pressure gauge 1 (5.1) is provided between the booster device and high pressure cylinder 2 (14.2).

9. The automatic air supply system for an actuating device according to any one of claims 2 to 6, characterized in that, The main gas supply pipeline is connected to a main pressure relief pipeline, which is equipped with a manual shut-off valve three (8.3); the high-pressure gas cylinder two (14.2) is connected to the main gas supply pipeline through a secondary gas line; the secondary gas line is equipped with a manual shut-off valve one (8.1) and a safety valve one (7.1).

10. The automatic air supply system for an actuating device according to any one of claims 2 to 6, characterized in that, The low-pressure pneumatic control unit includes an air compressor (13), a pneumatic triplet (1), and a valve island (16) connected in sequence through control pipelines. The valve island (16) is connected to a pressure reducing valve and a pneumatic shut-off valve (10) respectively. The pneumatic triplet (1) is also connected to a booster device through a solenoid valve (2.1).

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