CN112113737A - Air supply and exhaust system capable of accurately controlling equipment pressure under interference condition - Google Patents
Air supply and exhaust system capable of accurately controlling equipment pressure under interference condition Download PDFInfo
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- CN112113737A CN112113737A CN202011106760.2A CN202011106760A CN112113737A CN 112113737 A CN112113737 A CN 112113737A CN 202011106760 A CN202011106760 A CN 202011106760A CN 112113737 A CN112113737 A CN 112113737A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses an air supply and exhaust system capable of accurately controlling equipment pressure under the condition of interference, which comprises controlled equipment, a pressure air storage tank, an air suction filter, a first vacuum equipment, a second vacuum equipment and an exhaust silencer, wherein the controlled equipment is connected with the air suction filter; the pressure air storage tank is communicated with the controlled equipment through an air supply main pipeline, and an air supply control main valve is arranged on the air supply main pipeline; the first vacuum equipment is connected with the controlled equipment through a first air exhaust main pipeline, and the first air exhaust main pipeline is provided with an air exhaust control main valve; the vacuum equipment II is connected with a first air exhaust main pipeline through a second air exhaust main pipeline, and an air exhaust stop valve is arranged on the second air exhaust main pipeline; the air suction filter is connected to the first air suction main pipeline through an air supply pipeline, and an atmospheric air supply control valve is arranged on the air supply pipeline; the exhaust muffler is connected with the controlled equipment through the main exhaust pipeline, the main exhaust control valve is arranged on the main exhaust pipeline, pressure control can be rapidly and accurately carried out through the system, pressure fluctuation in the controlled equipment is small after adjustment, and response speed is high when disturbance occurs.
Description
Technical Field
The invention relates to the technical field of wind tunnel tests, in particular to a gas supply and exhaust system capable of accurately controlling equipment pressure under the condition of interference.
Background
In the field of aviation, in order to develop an advanced aircraft, besides improving the measurement precision of the existing wind tunnel test and improving the test technology, high-performance continuous transonic wind tunnel test equipment must be established, the problems of simulation capability and refinement simulation of the wind tunnel test of the aircraft are solved, the main structure of the wind tunnel is of a backflow type, the stability of a flow field is very high, and when the wind tunnel test is carried out, the internal pressure of the wind tunnel can fluctuate due to the internal leakage of the main structure of the wind tunnel, the adjustment of internal components and other reasons, so that an air supply and exhaust system capable of accurately controlling the pressure of the equipment under the condition of interference needs to be provided, and the pressure and the flow field are ensured to be stable in the process of the continuous transonic.
Disclosure of Invention
The purpose of the invention is as follows: the air supply and exhaust system can accurately control the pressure of equipment under the condition of interference, and the pressure and the flow field are ensured to be kept stable in the continuous transonic wind tunnel test process.
The technical scheme of the invention is as follows:
a supply and exhaust system capable of accurately controlling equipment pressure under the condition of interference comprises a controlled equipment (1), a pressure air storage tank (6), an air suction filter (22), a first vacuum equipment (11), a second vacuum equipment (14) and an exhaust silencer (19);
the pressure air storage tank (6) is connected with the controlled equipment (1) through a main air supply pipeline (2), and an air supply control main valve (4) is arranged on the main air supply pipeline (2); the vacuum equipment I (11) is connected with the controlled equipment (1) through a main air suction pipeline I (7), and an air suction control main valve (9) is arranged on the main air suction pipeline I (7); the second vacuum equipment (14) is connected to the first air suction main pipeline (7) through a second air suction main pipeline (12) and is communicated with the controlled equipment (1), and an air suction stop valve (13) is arranged on the second air suction main pipeline (12); the air suction filter (22) is connected to the first air suction main pipeline (7) through an air supplement pipeline (20) and is communicated with the controlled equipment (1), and an atmosphere air supplement control valve (21) is arranged on the air supplement pipeline (20); the exhaust muffler (19) is connected with the controlled equipment (1) through an exhaust main pipeline (15), and an exhaust control main valve (17) is arranged on the exhaust main pipeline (15).
Further, air supply control main valve (4) both ends be provided with air supply bypass pipeline (3) with air supply main pipe (2) intercommunication, air supply bypass pipeline (3) on be provided with air supply control and assist valve (5).
Furthermore, two ends of the air exhaust control main valve (9) are connected with an air exhaust bypass pipeline (8), and an air exhaust control auxiliary valve (10) is arranged on the air exhaust bypass pipeline (8).
Furthermore, both ends of the main exhaust control valve (17) are connected with an exhaust bypass pipeline (16), and an auxiliary exhaust control valve (18) is arranged on the exhaust bypass pipeline (16).
Furthermore, the number of the second vacuum devices (14) is five, each second vacuum device (14) is connected to the first air suction main pipe (7) through the second air suction main pipe (12) and is communicated with the controlled device (1), and each second air suction main pipe (12) is provided with an air suction stop valve (13).
Furthermore, the controlled equipment (1) is a wind tunnel.
Furthermore, vacuum apparatus two (14) be connected to on the main pipeline of bleeding (7) through main pipeline of bleeding (12), hookup location before main pipeline of bleeding (7) connector with main pipeline of bleeding (8), inhale filter (22) be connected to on main pipeline of bleeding (7) through tonifying qi pipeline (20), hookup location is before main pipeline of bleeding (7) and main pipeline of bleeding (12) connector.
Furthermore, the air supply control main valve (4), the air supply control auxiliary valve (5), the air extraction control main valve (9), the air extraction control auxiliary valve (10), the exhaust control main valve (17), the exhaust control auxiliary valve (18) and the atmosphere air compensation control valve (21) are all pneumatic regulating valves.
The invention has the beneficial effects that:
compared with the prior art, the technical scheme of the invention has the substantial characteristics and the improvement that when the controlled equipment fluctuates due to leakage, internal part adjustment and the like, the pressure can be rapidly and accurately controlled through the system, the system can be universally used for the controlled equipment with both positive pressure working conditions and negative pressure working conditions, the pressure fluctuation in the controlled equipment is small after the system is adjusted, and the response speed is high when the controlled equipment is disturbed.
Drawings
FIG. 1 is a schematic diagram of an air supply and exhaust system of the present invention that provides precise control of plant pressure during upset conditions;
FIG. 2 is a schematic diagram of the structure of an air supply and exhaust system of the present invention capable of accurately controlling the pressure of equipment under disturbance conditions;
wherein: 1-controlled equipment; 2-a main gas supply pipeline; 3-a gas supply bypass pipeline; 4-air supply control main valve; 5-auxiliary valve for controlling air supply; 6-pressure gas storage tank; 7-a first air suction main pipeline; 8-a suction bypass duct; 9-air exhaust control main valve; 10-air extraction control auxiliary valve; 11-vacuum equipment I; 12-a second air suction main pipeline; 13-a suction stop valve; 14-vacuum equipment II; 15-main exhaust pipe; 16-an exhaust bypass duct; 17-an exhaust control main valve; 18-auxiliary exhaust control valve; 19-exhaust muffler; 20-a gas supply pipeline; 21-atmospheric air compensation control valve; 22-suction filter.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operating principles of the components, the manufacturing processes and the operation and use methods thereof, will be further described in detail with reference to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention:
as shown in fig. 1 and 2, the air supply and exhaust system capable of accurately controlling the pressure of the device under the condition of interference according to the present invention includes a controlled device 1, a main air supply pipeline 2, a bypass air supply pipeline 3, a main air supply control valve 4, an auxiliary air supply control valve 5, a pressure air storage tank 6, a main air extraction pipeline 7, a bypass air extraction pipeline 8, a main air extraction control valve 9, an auxiliary air extraction control valve 10, a first vacuum device 11, a second main air extraction pipeline 12, a stop air extraction valve 13, a second vacuum device 14, a main air exhaust pipeline 15, a bypass air exhaust pipeline 16, a main air exhaust control valve 17, an auxiliary air exhaust control valve 18, an exhaust muffler 19, an air supply pipeline 20, an atmospheric air supply control valve 21, an air intake filter 22; when the controlled equipment 1 such as a continuous wind tunnel causes pressure fluctuation due to leakage, internal component adjustment and the like, measures are needed to be taken to ensure that the fluctuation is rapidly reduced and always kept within an allowable small amplitude range, and in addition, negative pressure and positive pressure working conditions exist in the wind tunnel test process. Under the condition of carrying out a negative pressure test, the air supply control auxiliary valve 5 is opened to a pressure balance state according to the equipment leakage condition, the pressure fluctuation is accurately controlled by adjusting the matching of the air extraction control main valve 9 and the air extraction control auxiliary valve 10, when large pressure disturbance occurs, the air extraction stop valve 13 is opened to rapidly improve the air extraction speed, the disturbance is controlled, and when the pressure is lower than a control target, the atmospheric air supplement control valve 21 is opened to rapidly balance; under the condition of carrying out positive pressure test, the main exhaust control valve 17 and the auxiliary exhaust control valve 18 are matched to be opened to a pressure balance state according to the equipment leakage condition, the pressure fluctuation is accurately controlled by adjusting the auxiliary air supply control valve 5, and when large pressure disturbance occurs, the main air supply control valve 4 is opened to rapidly increase the air supply speed so as to control the disturbance.
The controlled equipment 1, namely the wind tunnel, is connected with a pressure gas storage tank 6 through a main gas supply pipeline 2, a main gas supply control valve 4 is arranged on the main gas supply pipeline 2, two ends of the main gas supply control valve 4 are connected with a bypass gas supply pipeline 3, an auxiliary gas supply control valve 5 is arranged on the bypass gas supply pipeline 3, and the controlled equipment forms a gas supply control loop; the pressure gas in the pressure gas storage tank 6 is supplied to the controlled device 1, namely, the wind tunnel through the gas supply main pipeline 2 and the gas supply bypass pipeline 3, the opening and closing sizes of the gas supply control main valve 4 and the gas supply control auxiliary valve 5 are controlled, the gas supply amount to the controlled device 1, namely, the gas supply amount in the wind tunnel can be adjusted, the pressure control loop can be applied to balance leakage in the controlled device 1, namely, the wind tunnel, so that the pressure in the tunnel is kept stable, the pressure disturbance in the controlled device 1, namely, the wind tunnel can also be balanced through reverse control, and the control loop can be applied to the positive pressure working condition and the negative pressure working.
The controlled equipment 1, namely the wind tunnel, is connected with a first vacuum equipment 11 through a first air extraction main pipeline 7, the first air extraction main pipeline 7 is provided with a main air extraction control valve 9, two ends of the main air extraction control valve 9 are connected with air extraction bypass pipelines 8, the air extraction bypass pipelines 8 are provided with auxiliary air extraction control valves 10, a second vacuum equipment 14 is connected to the first air extraction main pipeline 7 through a second air extraction main pipeline 12, the connecting position is in front of the connecting interface of the first air extraction bypass pipeline 8 and the first air extraction main pipeline 7, the second air extraction main pipeline 12 is provided with an air extraction stop valve 13, and the equipment forms an; vacuum apparatus 11 is through the main pipeline of bleeding 7 from controlled equipment 1 promptly the wind-tunnel internal air bleed, through the control size of the switch of the auxiliary valve 5 of control bleed control main valve 9 and bleed control, adjustable from controlled equipment 1 promptly the size of the internal air bleed tolerance of wind-tunnel, vacuum apparatus two 14 is through two 12 follow controlled equipment 1 promptly the internal air bleed of wind-tunnel, through the switch of control bleed stop valve 13, can quick adjustment from controlled equipment 1 promptly the size of the internal air bleed tolerance of wind-tunnel, above two way bleed control return circuits all can be applied to balanced to controlled equipment 1 promptly the internal pressure of wind-tunnel makes the hole keep stable. The control loop is applied to the negative pressure working condition of the controlled device 1, namely the wind tunnel.
The controlled equipment 1, namely the wind tunnel, is connected with an exhaust muffler 19 through an exhaust main pipeline 15, an exhaust control main valve 17 is arranged on the exhaust main pipeline 15, exhaust bypass pipelines 16 are connected with two ends of the exhaust control main valve 17, exhaust control auxiliary valves 18 are arranged on the exhaust bypass pipelines 16, and the controlled equipment 1, namely the wind tunnel, forms an exhaust control loop; the controlled device 1, namely the wind tunnel exhausts air into the exhaust muffler 19 through the main exhaust pipe 15, the size of the exhaust air volume in the controlled device 1, namely the wind tunnel, can be adjusted by controlling the opening and closing sizes of the main exhaust control valve 17 and the auxiliary exhaust control valve 18, the method can be applied to balance the leakage in the controlled device 1, namely the wind tunnel, so that the pressure in the tunnel body is kept stable, and the method can also be reversely controlled to balance the pressure disturbance in the controlled device 1, namely the wind tunnel. The control loop is applied to the controlled device 1, namely the positive pressure working condition in the wind tunnel.
The air suction filter 22 is connected to the first air suction main pipeline 7 through an air supplement pipeline 20, the connection position is in front of the connection interface of the first air suction main pipeline 7 and the second air suction main pipeline 12, an atmosphere air supplement control valve 21 is arranged on the air supplement pipeline 20, and the above devices form an atmosphere air supplement control loop; the controlled equipment 1, namely the wind tunnel, is supplied with air through the air supply pipeline 20, the amount of air supplied from the air suction filter 22 can be adjusted by controlling the opening and closing of the atmospheric air supply control valve 21, and the device can be applied to pressure disturbance of sudden and large-amplitude reduction of the pressure in the controlled equipment 1, namely the wind tunnel body. The control loop is applied to the negative pressure working condition of the controlled device 1, namely the wind tunnel.
The valves of the air supply control main valve 4, the air supply control auxiliary valve 5, the air extraction control main valve 9, the air extraction control auxiliary valve 10, the exhaust control main valve 17, the exhaust control auxiliary valve 18, the atmospheric air compensation control valve 21 and the like are pneumatic regulating valves, the starting regulating valve is composed of an executing mechanism and a regulating mechanism, the executing mechanism is a thrust part of the pneumatic regulating valve and generates corresponding thrust according to the pressure of a control signal to push the regulating mechanism to act, and the valve body is a regulating part of the pneumatic regulating valve and is directly contacted with regulating gas to regulate the flow of the gas.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (8)
1. An air supply and exhaust system capable of accurately controlling the pressure of equipment under disturbance conditions, comprising a controlled equipment (1), characterized in that: the vacuum cleaner also comprises a pressure air storage tank (6), an air suction filter (22), a first vacuum device (11), a second vacuum device (14) and an exhaust silencer (19);
the pressure air storage tank (6) is connected with the controlled equipment (1) through a main air supply pipeline (2), and an air supply control main valve (4) is arranged on the main air supply pipeline (2); the vacuum equipment I (11) is connected with the controlled equipment (1) through a main air suction pipeline I (7), and an air suction control main valve (9) is arranged on the main air suction pipeline I (7); the second vacuum equipment (14) is connected to the first air suction main pipeline (7) through a second air suction main pipeline (12) and is communicated with the controlled equipment (1), and an air suction stop valve (13) is arranged on the second air suction main pipeline (12); the air suction filter (22) is connected to the first air suction main pipeline (7) through an air supplement pipeline (20) and is communicated with the controlled equipment (1), and an atmosphere air supplement control valve (21) is arranged on the air supplement pipeline (20); the exhaust muffler (19) is connected with the controlled equipment (1) through an exhaust main pipeline (15), and an exhaust control main valve (17) is arranged on the exhaust main pipeline (15).
2. An air supply and exhaust system capable of accurately controlling the pressure of equipment under disturbance conditions according to claim 1, wherein: air supply control main valve (4) both ends be provided with air supply bypass pipeline (3) with air supply trunk line (2) intercommunication, air supply bypass pipeline (3) on be provided with air supply control and assist valve (5).
3. An air supply and exhaust system capable of accurately controlling the pressure of equipment under disturbance conditions according to claim 1, wherein: and two ends of the air exhaust control main valve (9) are connected with an air exhaust bypass pipeline (8), and an air exhaust control auxiliary valve (10) is arranged on the air exhaust bypass pipeline (8).
4. An air supply and exhaust system capable of accurately controlling the pressure of equipment under a disturbance condition according to claim 1, wherein: and two ends of the main exhaust control valve (17) are connected with an exhaust bypass pipeline (16), and an auxiliary exhaust control valve (18) is arranged on the exhaust bypass pipeline (16).
5. An air supply and exhaust system capable of accurately controlling the pressure of equipment under disturbance conditions according to claim 1, wherein: and the number of the second vacuum equipment (14) is five, each second vacuum equipment (14) is connected to the first air suction main pipeline (7) through the second air suction main pipeline (12) and is communicated with the controlled equipment (1), and each second air suction main pipeline (12) is provided with an air suction stop valve (13).
6. An air supply and exhaust system capable of accurately controlling the pressure of equipment under disturbance conditions according to claim 1, wherein: the controlled equipment (1) is a wind tunnel.
7. An air supply and exhaust system capable of accurately controlling the pressure of equipment under disturbance conditions according to claim 1, wherein: vacuum apparatus two (14) be connected to on the main pipeline of bleeding (7) through main pipeline of bleeding (12), the hookup location before main pipeline of bleeding (7) connection interface in bypass pipeline of bleeding (8), the filter of breathing in (22) be connected to on main pipeline of bleeding (7) through tonifying qi pipeline (20), the hookup location before main pipeline of bleeding (7) and main pipeline of bleeding (12) connection interface.
8. An air supply and exhaust system capable of accurately controlling the pressure of equipment under disturbance conditions according to claim 1, wherein: the air supply control main valve (4), the air supply control auxiliary valve (5), the air extraction control main valve (9), the air extraction control auxiliary valve (10), the exhaust control main valve (17), the exhaust control auxiliary valve (18) and the atmosphere air supplement control valve (21) are all pneumatic regulating valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106760.2A CN112113737A (en) | 2020-10-16 | 2020-10-16 | Air supply and exhaust system capable of accurately controlling equipment pressure under interference condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011106760.2A CN112113737A (en) | 2020-10-16 | 2020-10-16 | Air supply and exhaust system capable of accurately controlling equipment pressure under interference condition |
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| Publication Number | Publication Date |
|---|---|
| CN112113737A true CN112113737A (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011106760.2A Pending CN112113737A (en) | 2020-10-16 | 2020-10-16 | Air supply and exhaust system capable of accurately controlling equipment pressure under interference condition |
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| CN (1) | CN112113737A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
-
2020
- 2020-10-16 CN CN202011106760.2A patent/CN112113737A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
| CN116213364B (en) * | 2023-05-11 | 2023-07-21 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
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