A large rocket launching station water spray noise reduction equivalent verification system
By combining a large air storage tank and a sealed water tank, the equivalent verification of water spray noise reduction at rocket launch sites was achieved. This solved the performance testing problem of the water spray system under different pressures and timings, supports nozzle optimization and timing improvement, and is applied to water spray noise reduction technology in smart launch sites.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NO 63921 UNIT OF PLA
- Filing Date
- 2023-02-14
- Publication Date
- 2026-06-05
AI Technical Summary
Existing technologies are insufficient to effectively simulate the equivalent verification of a water jet noise reduction system during rocket launch, especially for nozzle performance testing under different pressure conditions and water jet timing.
A combination of a large spherical air storage tank and a sealed water tank is used. The water tank is supplied with water at a stable pressure through an air compressor and an air tank system. This allows for testing of the water spraying performance of different nozzles under different pressures. The water spraying pipeline is set up proportionally to simulate the water supply and delivery methods at the launch site.
It enables effective verification of nozzle design and water spray timing, ensures performance testing of the water spray noise reduction system under different conditions, supports nozzle optimization and control timing improvement, and is applied to water spray noise reduction technology in smart launch sites.
Smart Images
Figure CN116046370B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an equivalent verification system for water spray noise reduction at a large rocket launch site, belonging to the field of rocket launch noise suppression engineering applications. Background Technology
[0002] During rocket launch, the aerodynamic noise generated by the high-temperature exhaust jet can reach over 170 dB, posing a significant threat to instruments, personnel, loads, structures, and ground facilities. Spraying water into the rocket engine's exhaust jet field during ignition is the most effective cooling and noise reduction solution. The cooling water atomizes into fine droplets, which rapidly vaporize upon contact with the high-temperature exhaust gas, effectively cooling the gas and absorbing noise. However, the effectiveness of the water spray depends on the nozzle structure, and the spray sequence also needs verification. Conducting scaled-down verification tests is the most direct and effective method to evaluate the performance and procedures of the launch site's water spray noise reduction system. For example, a water spray system at a launch pad located at an elevation of 80 meters and a height of 550 meters... 3 Water is supplied by a water tank and transported via DN1600 pipes. Therefore, when conducting system verification tests, it is necessary to simulate the water supply and transport methods of the launch station on an equivalent basis, and the water spray pipeline must be configured according to the actual pipeline in order to more realistically test the system performance. Summary of the Invention
[0003] The purpose of this invention is to provide an equivalent verification system for water spray noise reduction at a large rocket launch site. The system uses a large spherical air storage tank to provide stable water supply to the water tank, which can realize the water spray performance test of different nozzles under different pressure conditions.
[0004] This invention is implemented as follows:
[0005] A large rocket launch site water spray noise reduction equivalent verification system includes an air compressor 1, an air source pipeline 2, a manual valve for supplying air to air tank #1 3, a manual valve for supplying air to air tank #2 4, an air tank connecting pipeline 5, an air tank connecting valve 6, an air tank #1 7, a pressure gauge for air tank #1 8, a pressurization pipeline for air tank #1 9, a pneumatic pressurization valve for air tank #1 10, an air tank #2 11, a pressure gauge for air tank #2 12, and a pressurization valve for air tank #2. Pipeline 13, Air Tank #2 pneumatic booster valve 14, Pre-boost pipeline 15, Pre-boost valve 16, Water tank supply valve 17, Water tank pressure gauge 18, Water tank vent valve 19, Water tank booster distributor 20, Sealed water tank 21, Differential pressure level gauge 22, Water tank outlet anti-vortex device 23, Main water supply pipeline 24, Main water supply flow meter 25, Main water supply pipeline pressure gauge 26, Equivalent pipeline for water spray at launch station 27, Main water supply pipeline drain valve 41;
[0006] The inlets of air tank #1 (7) and air tank #2 (11) are connected via air tank connecting pipe 5, which is equipped with an air tank connecting valve 6. The outlet of air tank #1 (7) is connected to the top pressurization port of the sealed water tank 21 via air tank pressurization pipe #1 (9), which is equipped with a pneumatic pressurization valve 10. The outlet of air tank #2 (11) is connected to the top pressurization port of the sealed water tank 21 via air tank pressurization pipe #2 (13), which is equipped with a pneumatic pressurization valve 14. The ends of air tank pressurization pipes #1 (9) and #2 (13) are connected to the water tank pressurization distributor 20. A pre-pressurization pipe 15 is installed on air tank #2 (11) and connected to the top of the sealed water tank 21, which is equipped with a pre-pressurization valve 16.
[0007] The outlet of air compressor 1 is connected to air tank connecting pipe 5, which is connected to the inlet of air tank 7 and air tank 11, via air source pipe 2. Air source pipe 2 is connected to air tank connecting pipe 5 via the switch of air supply manual valve 3 and air supply manual valve 4 of air tank 1 installed on it. Air tank 7 is equipped with air tank pressure gauge 8, and air tank 11 is equipped with air tank pressure gauge 12.
[0008] A water supply valve 17 is installed at the bottom of the sealed water tank 21, and a water tank vent valve 19 is installed above the sealed water tank 21. A water tank pressure distributor 20 is installed above the inner cavity of the sealed water tank 21. A differential pressure level gauge 22 is installed on the side of the sealed water tank 21, and its upper and lower connecting pipes are connected to the lower and upper parts of the inner cavity of the sealed water tank 21. A water tank outlet anti-vortex device 23 is installed at the outlet of the inner cavity of the sealed water tank 21. The outlet of the sealed water tank 21 is connected to the main water supply pipeline 24. A main water supply flow meter 25 and a main water supply pipeline pressure gauge 26 are installed on the main water supply pipeline 24.
[0009] The equivalent water spray pipeline 27 at the launch site consists of multiple primary and secondary water spray pipelines connected in parallel. The inlets of the primary and secondary water spray pipelines are connected to the main water supply pipeline 24 after the pressure gauge 26 of the main water supply pipeline. The primary water spray pipeline includes a primary water spray pipeline 28, a primary water spray pipeline hand valve 29, a primary water spray pipeline pneumatic regulating valve 30, a primary water spray pipeline flow meter 31, a primary water spray pipeline metal hose 32, and a primary water spray nozzle 33. The outlet of the primary water spray pipeline 28 is connected to the inlet of the primary water spray pipeline hand valve 29, and the outlet of the primary water spray pipeline hand valve 29 is then connected to the inlet of the primary water spray pipeline pneumatic regulating valve 30. A primary water spray pipeline flow meter 31 is installed on the outlet pipeline of the primary water spray pipeline pneumatic regulating valve 30. A primary water spray pipeline metal hose 32 is installed on the pipeline after the primary water spray pipeline flow meter 31, and the outlet of the primary water spray pipeline metal hose 32 is installed with... There is a primary water spray nozzle 33; the secondary water spray pipeline includes a secondary water spray pipeline 34, a secondary water spray pipeline manual valve 35, a secondary water spray pipeline pneumatic regulating valve 36, a secondary water spray pipeline pneumatic quick-opening valve 37, a secondary water spray pipeline flow meter 38, a secondary water spray pipeline metal hose 39, and a secondary water spray nozzle 40; the outlet of the secondary water spray pipeline 34 is connected to the inlet of the secondary water spray pipeline manual valve 35, and the outlet of the secondary water spray pipeline manual valve 35 is then connected to the inlet of the secondary water spray pipeline pneumatic regulating valve 36; the outlet of the secondary water spray pipeline pneumatic regulating valve 36 is connected to the inlet of the secondary water spray pipeline pneumatic quick-opening valve 37, the outlet pipeline of the secondary water spray pipeline pneumatic quick-opening valve 37 is equipped with a secondary water spray pipeline flow meter 38, the outlet pipeline of the secondary water spray pipeline flow meter 38 is connected to the inlet of the secondary water spray pipeline metal hose 39, and the outlet of the secondary water spray pipeline metal hose 39 is equipped with a secondary water spray nozzle 40;
[0010] The main water supply pipeline drain valve 41 is located at the end of the main water supply pipeline 24.
[0011] Furthermore, the volume ratio of the air tank to the water in the sealed water tank is above 20:1.
[0012] Furthermore, external ultrasonic flow meters are used in the water supply pipeline and the water spray pipeline.
[0013] Furthermore, the No. 1 air tank supply valve 3 and the No. 2 air tank supply valve 4 adopt a two-way sealing structure.
[0014] Furthermore, both the No. 1 air tank pressurization pipeline 9 and the No. 2 air tank pressurization pipeline 13 adopt large-diameter pipelines.
[0015] Furthermore, the air tank pneumatic booster valve uses a large-diameter pipeline.
[0016] Furthermore, the pre-pressurization pipeline pre-pressurizes the sealed water tank to balance with the air tank, avoiding pressure shocks and sudden increases in the air cushion pressure inside the sealed water tank.
[0017] Furthermore, a water tank pressurization distributor is installed on top of the sealed water tank.
[0018] Furthermore, a water outlet anti-vortex device is installed at the bottom of the sealed water tank.
[0019] Furthermore, the pneumatic regulating valve and pneumatic quick-opening valve in the water pipeline are interlocked with the differential pressure level gauge in the water tank. When the liquid level drops to the bottom of the water tank, the pneumatic regulating valve and pneumatic quick-opening valve in the water pipeline are closed in time to prevent excessive discharge of water in the sealed water tank and water supply pipeline, and to prevent the generation of air hammer during testing.
[0020] The outstanding advantage of this invention is that by using a large air tank and a sealed water tank for pressurization, and by setting the water spray pipeline in a proportional manner, the most realistic simulation of the gravitational potential energy water spray from the high-level water tank at the launch site is achieved.
[0021] The advantages of this invention: The deployment of the large-scale rocket launch site water spray noise reduction equivalent verification system can effectively verify the water spray performance parameters of different nozzles under different pressures and timing sequences, providing a verification platform for nozzle design improvement and timing optimization. Currently, the optimized nozzles and control timing have been applied in a new type of smart launch site. The application of this water spray noise reduction equivalent verification system has enabled the first use of large nozzles for spatial three-dimensional high-flow-rate water curtain spraying technology at domestic launch sites. Attached Figure Description
[0022] Appendix Figure 1 This is a schematic diagram of the process system of the present invention. 1 is an air compressor, 2 is an air source pipeline, 3 is the manual valve for supplying air to air tank #1, 4 is the manual valve for supplying air to air tank #2, 5 is an air tank connecting pipeline, 6 is an air tank connecting valve, 7 is air tank #1, 8 is a pressure gauge for air tank #1, 9 is a pressurization pipeline for air tank #1, 10 is a pneumatic pressurization valve for air tank #1, 11 is air tank #2, 12 is a pressure gauge for air tank #2, 13 is a pressurization pipeline for air tank #2, 14 is a pneumatic pressurization valve for air tank #2, 15 is a pre-pressurization pipeline, 16 is a pre-pressurization valve, 17 is a water tank supply valve, 18 is a water tank pressure gauge, 19 is a water tank vent valve, 20 is a water tank pressurization distributor, 21 is a sealed water tank, 22 is a differential pressure level gauge, and 23 is... Water tank outlet anti-vortex device, 24 main water supply pipeline, 25 main water supply flow meter, 26 main water supply pipeline pressure gauge, 27 equivalent pipeline for water spray at the launch station, 28 primary water spray pipeline, 29 primary water spray pipeline manual valve, 30 primary water spray pipeline pneumatic regulating valve, 31 primary water spray pipeline flow meter, 32 primary water spray pipeline metal hose, 33 primary water spray nozzle, 34 secondary water spray pipeline, 35 secondary water spray pipeline manual valve, 36 secondary water spray pipeline pneumatic regulating valve, 37 secondary water spray pipeline pneumatic quick-opening valve, 38 secondary water spray pipeline flow meter, 39 secondary water spray pipeline metal hose, 40 secondary water spray nozzle, 41 main water supply pipeline drain valve. Detailed Implementation
[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0024] From the appendix Figure 1 As shown, the large rocket launch site water spray noise reduction equivalent verification system provided by the present invention includes an air compressor 1, an air source pipeline 2, a manual valve for supplying air to air tank #1 3, a manual valve for supplying air to air tank #2 4, an air tank connecting pipeline 5, an air tank connecting valve 6, an air tank #1 7, a pressure gauge for air tank #1 8, a pressurization pipeline for air tank #1 9, a pneumatic pressurization valve for air tank #1 10, an air tank #2 11, a pressure gauge for air tank #2 12, a pressurization pipeline for air tank #2 13, a pneumatic pressurization valve for air tank #2 14, a pre-pressurization pipeline 15, a pre-pressurization valve 16, a water tank supply valve 17, a water tank pressure gauge 18, a water tank vent valve 19, a water tank pressurization distributor 20, and a sealed water tank 2. 1. Differential pressure level gauge; 22. Water tank outlet anti-vortex device; 23. Main water supply pipeline; 24. Main water supply flow meter; 25. Main water supply pipeline pressure gauge; 26. Equivalent pipeline for water spray at the launching station; 27. Primary water spray pipeline; 28. Primary water spray pipeline manual valve; 29. Primary water spray pipeline pneumatic regulating valve; 30. Primary water spray pipeline flow meter; 31. Primary water spray pipeline metal hose; 32. Primary water spray nozzle; 33. Secondary water spray pipeline; 34. Secondary water spray pipeline manual valve; 35. Secondary water spray pipeline pneumatic regulating valve; 36. Secondary water spray pipeline pneumatic quick-opening valve; 37. Secondary water spray pipeline flow meter; 38. Secondary water spray pipeline metal hose; 39. Secondary water spray nozzle; 40. Main water supply pipeline drain valve; 41.
[0025] The system's air supply is mainly achieved through air compressor 1, air source pipeline 2, air supply manual valve 3 for air tank #1, and air supply manual valve 4 for air tank #2. The outlet of air compressor 1 is connected to air tank connecting pipeline 5, which is connected to the inlets of air tank #1 (7) and air tank #2 (11), via two air source pipelines 2. Air source pipeline 2 is connected to air tank connecting pipeline 5 through the switches of air supply manual valves 3 and 4 for air tank #1 and air tank #2. Air tank #1 is equipped with a pressure gauge 8 on top of air tank #1, and air tank #2 is equipped with a pressure gauge 12 on air tank #2. After air compressor 1 pressurizes the air, it is then sequentially fed into air tank #1 (7) and air tank #2 (11) for storage via air source pipeline 2 and air supply manual valve 3 or air supply manual valve 4, respectively. The pressurization pressure is adjusted according to the test conditions and read through pressure gauges 8 and 12. In this invention, the two air tanks are connected by a connecting pipe and a connecting valve. This ensures pressure balance between the two air tanks during synchronous pressurization, and allows control of the pressurization rate by adjusting the opening of the connecting valve when pressurizing a single tank. The connecting valve employs a bidirectional sealing structure. The air compressor supplies air to the two air tanks through two separate air source pipelines. The two supply valves facilitate the separation of the two air tanks, allowing them to be filled with different pressures according to the test conditions.
[0026] The system water supply is achieved through a water tank supply valve 17, a water tank vent valve 19, a sealed water tank 21, and a differential pressure level gauge 22. The water tank supply valve 17 is installed at the bottom of the sealed water tank 21, the water tank vent valve 19 is installed above the sealed water tank 21, and a water tank pressure distributor 20 is installed above the inner cavity of the sealed water tank 21. The differential pressure level gauge 22 is installed on the side of the sealed water tank 21, and its upper and lower connecting pipes are connected to the lower and upper parts of the inner cavity of the sealed water tank 21. First, the water tank vent valve 19 is opened to connect the inner cavity of the sealed water tank 21 to the atmosphere. Then, the water tank supply valve 17 is opened to supply water, and the water level is monitored by the differential pressure level gauge 22. The water level must be lower than the bottom of the water tank pressure distributor 20. In this invention, the water tank pressure distributor 20 is installed at the top of the sealed water tank, which allows the pressurized air to act evenly on the gas-liquid interface, ensuring a uniform drop in the liquid level. This invention injects water into a sealed water tank by sequentially opening the water tank vent valve and the water tank supply valve, and monitors the water level using a differential pressure level gauge.
[0027] The system water tank pressurization is achieved through the sequential operation of air tank connecting pipe 5, air tank connecting valve 6, air tank #1 pressurization pipe 9, air tank #1 pneumatic pressurization valve 10, air tank #2 pressurization pipe 13, air tank #2 pneumatic pressurization valve 14, pre-pressurization pipe 15, pre-pressurization valve 16, and water tank pressurization distributor 20. The inlets of air tank #1 (7) and air tank #2 (11) are connected through air tank connecting pipe 5, which is equipped with air tank connecting valve 6. The outlet of air tank #1 (7) is connected to the sealed water tank through air tank #1 pressurization pipe 9. At the top pressurization port of the 21, a pneumatic pressurization valve 10 for the No. 1 air tank is installed on the pressurization pipeline 9 of the No. 1 air tank; the outlet of the No. 2 air tank 11 is connected to the top pressurization port of the sealed water tank 21 through the pressurization pipeline 13 of the No. 2 air tank, and a pneumatic pressurization valve 14 for the No. 2 air tank is installed on the pressurization pipeline 13 of the No. 2 air tank; the ends of the pressurization pipelines 9 and 13 of the No. 1 air tank are connected to the water tank pressurization distributor 20; a pre-pressurization pipeline 15 is installed on the No. 2 air tank 11 and connected to the top of the sealed water tank 21, and a pre-pressurization valve 16 is installed on the pipeline. First, the pre-pressurization valve 16 is opened, and the sealed water tank 21 is pre-pressurized through the pre-pressurization pipeline 15, so that the pressure inside the sealed water tank 21 is balanced with the pressure of air tank 7 or air tank 11. Then, the air tank connecting valve 6 is opened, connecting air tank 7 and air tank 11 through the air tank connecting pipeline 5. This facilitates pressure balance between the two air tanks and also helps the water tank pressurization distributor 20 to evenly distribute pressurized air, maintaining a stable drop in the liquid level inside the water tank. Next, the pneumatic pressurization valves 10 and 14 of air tank 1 and 2 are opened, and the sealed water tank 21 is pressurized through the pressurization pipelines 9 and 13 of air tank 1 and 2, respectively. In this invention, the pre-pressurization pipeline pre-pressurizes the sealed water tank to balance with the air tank, avoiding the pressure shock and sudden increase of the air cushion inside the sealed water tank when the pneumatic pressurization valves of the air tanks directly pressurize. The air tank pressurization pipeline and the air tank pneumatic pressurization valve adopt large-diameter pipelines to ensure that the air tank replenishment flow rate is greater than the water spray flow rate during the pressurization process, and to ensure that the pressure in the sealed water tank is replenished and stabilized in a timely manner during the water spraying process; at the same time, the pneumatic pressurization valve can quickly cut off the pressurization pipeline and achieve synchronous closure with the pneumatic regulating valve of the water spray pipeline to avoid excessive gas discharge from the air tank.
[0028] The system delivers water via a water tank outlet anti-vortex device 23, a main water supply pipeline 24, a main water supply flow meter 25, and a main water supply pipeline pressure gauge 26. The water tank outlet anti-vortex device 23 is installed at the outlet of the sealed water tank 21. The outlet of the sealed water tank 21 is connected to the main water supply pipeline 24, which is equipped with a main water supply flow meter 25 and a main water supply pipeline pressure gauge 26. The water tank outlet anti-vortex device 23 effectively prevents vortices and air trapping from forming in the water flow when the water level drops. The main water supply flow meter 25 measures the main flow rate of the sprayed water. The main water supply pipeline pressure gauge 26 monitors changes in the pressure of the main pipeline, especially the pressure surges caused by water hammer and air hammer when the system valves are started and closed. In this invention, an outlet anti-vortex device is installed at the bottom of the sealed water tank to prevent the generation of vortices during the drop in water level, ensuring the stability of water delivery.
[0029] The system sprays water through the equivalent water spray pipeline 27 at the launching station, completing the water spray performance test of the nozzles. The equivalent water spray pipeline 27 at the launching station is connected to the main water supply pipeline 24. Specifically, the equivalent water spray pipeline 27 at the launching station consists of multiple primary and secondary water spray pipelines connected in parallel. The primary water spray pipeline includes a primary water spray pipeline 28, a primary water spray pipeline hand valve 29, a primary water spray pipeline pneumatic regulating valve 30, a primary water spray pipeline flow meter 31, a primary water spray pipeline metal hose 32, and a primary water spray nozzle 33. The outlet of the primary water spray pipeline 28 is connected to the inlet of the primary water spray pipeline hand valve 29, and the outlet of the primary water spray pipeline hand valve 29 is then connected to the inlet of the primary water spray pipeline pneumatic regulating valve 30. A primary water spray pipeline flow meter 31 is installed on the outlet pipeline of the primary water spray pipeline pneumatic regulating valve 30, and a primary water spray pipeline metal hose 32 is installed on the pipeline after the primary water spray pipeline flow meter 31. The outlet of the flexible hose 32 is equipped with a primary water spray nozzle 33; the secondary water spray pipeline includes a secondary water spray pipeline 34, a secondary water spray pipeline manual valve 35, a secondary water spray pipeline pneumatic regulating valve 36, a secondary water spray pipeline pneumatic quick-opening valve 37, a secondary water spray pipeline flow meter 38, a secondary water spray pipeline metal flexible hose 39, and a secondary water spray nozzle 40; the outlet of the secondary water spray pipeline 34 is connected to the inlet of the secondary water spray pipeline manual valve 35, and the outlet of the secondary water spray pipeline manual valve 35 is then connected to the inlet of the secondary water spray pipeline pneumatic regulating valve 36; the outlet of the secondary water spray pipeline pneumatic regulating valve 36 is connected to the inlet of the secondary water spray pipeline pneumatic quick-opening valve 37, a secondary water spray pipeline flow meter 38 is installed on the outlet pipeline of the secondary water spray pipeline pneumatic quick-opening valve 37, the outlet pipeline of the secondary water spray pipeline flow meter 38 is connected to the inlet of the secondary water spray pipeline metal flexible hose 39, and a secondary water spray nozzle 40 is installed at the outlet of the secondary water spray pipeline metal flexible hose 39. To simulate the performance of the water spray at the launch site, the pressure measured by the pressure gauge 26 on the main water supply pipeline at point A in the attached diagram must be equivalent to the actual water supply pressure at the launch site. The pipeline after pressure gauge 26 on the main water supply pipeline at point A must be consistent with the actual water spray pipeline at the end of the launch site. The primary water spray pipeline controls the water flow rate by manually setting the opening of the primary water spray pipeline hand valve 29. The performance of the primary water spray nozzles, filling time, and switching sequence can be tested by programming the pneumatic regulating valve 30 of the primary water spray pipeline and by replacing primary water spray nozzles 33 with different structural forms. The secondary water spray pipeline controls the water flow rate by manually setting the opening of the secondary water spray pipeline hand valve 35. The characteristics of the secondary water spray nozzles, filling time, and switching sequence can be tested by programming the pneumatic regulating valve 36 and the pneumatic quick-opening valve 37 of the secondary water spray pipeline, and by replacing primary water spray nozzles 33 with different structural forms. In this invention, the flow meters used in the water supply pipeline and the water spray pipeline are external ultrasonic flow meters to ensure that they do not affect the flow resistance characteristics under the system's working flow rate.The pneumatic regulating valve and pneumatic quick-opening valve in the water pipeline are interlocked with the differential pressure level gauge in the water tank. When the water level drops to the bottom of the water tank, the pneumatic regulating valve and pneumatic quick-opening valve in the water pipeline are closed in time to prevent excessive discharge of water from the sealed water tank and water supply pipeline, thus preventing the generation of air hammer during testing. In this invention, the system sprays water through the equivalent pipeline of the launch platform. The water flow rate is controlled by manually setting the opening degree of the manual valve in the water spray pipeline. By programming the pneumatic regulating valve and pneumatic quick-opening valve in the water spray pipeline, the performance of the spray nozzle, filling time, and switching sequence can be tested.
[0030] The volume ratio of the two air tanks to the water in the sealed water tank is above 20:1 to ensure a stable pressure supply during the pressurized water spraying process, so as to simulate the changes in pipeline pressure caused by the drop in water tank elevation and liquid level at the launch site.
[0031] In actual implementation, the air tank No. 1 used in the water spray noise reduction equivalent system at a certain launch site has a container size of 1000m. 3 The water tank has a volume of 120m³. 3 In actual use, the pressure variation range within the water tank is better than 4%, which is more stable and controllable compared to the 6% pressure variation during the mission. The air tank connecting pipeline is DN450, the pre-pressurization pipeline 15 is DN40, and the air tank pressurization pipeline 13 is DN450. The system's pressurization capacity follows the system well and does not produce any hysteresis effects. The main water supply pipeline 24 is DN1600, the primary water spray pipeline 28 is DN400, and the secondary water spray pipeline 34 is DN600. These pipelines are set up proportionally with the launch site water spray pipeline system. This water spray noise reduction equivalent system has completed the testing of nozzle characteristics and water spray program, laying the foundation for the successful one-time testing of the launch site system.
Claims
1. A large rocket launch site water spray noise reduction equivalent verification system, characterized in that, The aforementioned water spray noise reduction equivalent verification system includes an air compressor (1), an air source pipeline (2), a manual valve for supplying air to air tank #1 (3), a manual valve for supplying air to air tank #2 (4), an air tank connecting pipeline (5), an air tank connecting valve (6), an air tank #1 (7), a pressure gauge for air tank #1 (8), a pressurization pipeline for air tank #1 (9), a pneumatic pressurization valve for air tank #1 (10), an air tank #2 (11), a pressure gauge for air tank #2 (12), a pressurization pipeline for air tank #2 (13), and so on. #Air tank pneumatic booster valve (14), pre-boost pipeline (15), pre-boost valve (16), water tank supply valve (17), water tank pressure gauge (18), water tank vent valve (19), water tank booster distributor (20), sealed water tank (21), differential pressure level gauge (22), water tank outlet anti-vortex device (23), main water supply pipeline (24), main water supply flow meter (25), main water supply pipeline pressure gauge (26), equivalent pipeline for water spray at launch station (27), main water supply pipeline drain valve (41); The inlets of air tank #1 (7) and air tank #2 (11) are connected by an air tank connecting pipe (5), and an air tank connecting valve (6) is installed on the air tank connecting pipe (5); the outlet of air tank #1 (7) is connected to the top pressurization port of the sealed water tank (21) through an air tank pressurization pipe (9), and an air tank pneumatic pressurization valve (10) is installed on the air tank pressurization pipe (9); the outlet of air tank #2 (11) is connected by an air tank connecting pipe (6) to the top pressurization port of the sealed water tank (21). The pressurization pipeline (13) of the air tank is connected to the top pressurization port of the sealed water tank (21). The pressurization pipeline (13) of the No. 2 air tank is equipped with a pneumatic pressurization valve (14) of the No. 2 air tank. The ends of the pressurization pipeline (9) of the No. 1 air tank and the pressurization pipeline (13) of the No. 2 air tank are connected to the water tank pressurization distributor (20). The pre-pressurization pipeline (15) of the No. 2 air tank (11) is connected to the top of the sealed water tank (21). The pre-pressurization valve (16) is installed on the pipeline. The outlet of the air compressor (1) is connected to the air tank connecting pipe (5) which is connected to the inlet of air tank 1 (7) and air tank 2 (11) through the air source pipe (2). The air source pipe (2) is connected to the air tank connecting pipe (5) through the switch of the air supply manual valve (3) and the air supply manual valve (4) of air tank 1 installed thereon. Air tank 1 (7) is equipped with an air tank pressure gauge (8), and air tank 2 (11) is equipped with an air tank pressure gauge (12). A water tank supply valve (17) is installed at the bottom of the sealed water tank (21), a water tank exhaust valve (19) is installed above the sealed water tank (21), a water tank booster distributor (20) is installed above the inner cavity of the sealed water tank (21), a differential pressure level gauge (22) is installed on the side of the sealed water tank (21) and its upper and lower connecting pipes are connected to the lower and upper parts of the inner cavity of the sealed water tank (21); a water tank outlet anti-vortex device (23) is installed at the outlet of the inner cavity of the sealed water tank (21), the outlet of the sealed water tank (21) is connected to the main water supply pipeline (24), and a main water supply flow meter (25) and a main water supply pipeline pressure gauge (26) are installed on the main water supply pipeline (24); The equivalent pipeline (27) for the water spray at the launch site is composed of multiple primary and secondary water spray pipelines connected in parallel. The inlets of the primary and secondary water spray pipelines are connected to the main water supply pipeline (24) after the pressure gauge (26) of the main water supply pipeline. The primary water spray pipeline includes a primary water spray pipeline (28), a primary water spray pipeline hand valve (29), a primary water spray pipeline pneumatic regulating valve (30), a primary water spray pipeline flow meter (31), a primary water spray pipeline metal hose (32), and a primary water spray nozzle (3). 3) The outlet of the primary water spray pipe (28) is connected to the inlet of the primary water spray pipe hand valve (29). The outlet of the primary water spray pipe hand valve (29) is then connected to the inlet of the primary water spray pipe pneumatic regulating valve (30). A primary water spray pipe flow meter (31) is installed on the outlet pipe of the primary water spray pipe pneumatic regulating valve (30). A primary water spray pipe metal hose (32) is installed on the pipe after the primary water spray pipe flow meter (31). A primary water spray pipe metal hose (32) is installed at the outlet of the primary water spray pipe metal hose (32). The secondary water spray nozzle (33) is part of the secondary water spray pipeline. The secondary water spray pipeline includes the secondary water spray pipeline (34), the secondary water spray pipeline hand valve (35), the secondary water spray pipeline pneumatic regulating valve (36), the secondary water spray pipeline pneumatic quick-opening valve (37), the secondary water spray pipeline flow meter (38), the secondary water spray pipeline metal hose (39), and the secondary water spray nozzle (40). The outlet of the secondary water spray pipeline (34) is connected to the inlet of the secondary water spray pipeline hand valve (35), and the outlet of the secondary water spray pipeline hand valve (35) is then connected to... The inlet of the pneumatic regulating valve (36) of the secondary water spray pipeline is connected to the outlet of the pneumatic quick-opening valve (37) of the secondary water spray pipeline. A flow meter (38) of the secondary water spray pipeline is installed on the outlet pipeline of the pneumatic quick-opening valve (37) of the secondary water spray pipeline. The inlet of the metal hose (39) of the secondary water spray pipeline is connected to the outlet pipeline of the flow meter (38). A secondary water spray nozzle (40) is installed at the outlet of the metal hose (39) of the secondary water spray pipeline. The main water supply pipeline drain valve (41) is located at the end of the main water supply pipeline (24).
2. The large rocket launch site water spray noise reduction equivalent verification system as described in claim 1, characterized in that, The ratio of air tank volume to water volume in sealed water tank is greater than 20:
1.
3. The large rocket launch site water spray noise reduction equivalent verification system as described in claim 1, characterized in that, External ultrasonic flow meters are used in water supply pipelines and spray pipelines.
4. The large rocket launch site water spray noise reduction equivalent verification system as described in claim 1, characterized in that, The No. 1 air tank supply valve (3) and the No. 2 air tank supply valve (4) adopt a two-way sealing structure.
5. The large rocket launch site water spray noise reduction equivalent verification system as described in claim 1, characterized in that, Both the No. 1 air tank pressurization pipeline (9) and the No. 2 air tank pressurization pipeline (13) adopt large-diameter pipelines.
6. The equivalent verification system for water spray noise reduction at a large rocket launch site as described in claim 1, characterized in that, The air tank pneumatic booster valve uses a large-diameter pipeline.
7. The equivalent verification system for water spray noise reduction at a large rocket launch site according to claim 1, characterized in that, The pre-pressurization pipeline pre-pressurizes the sealed water tank to balance with the air tank, avoiding pressure shocks and sudden increases in the air cushion pressure inside the sealed water tank.
8. The equivalent verification system for water spray noise reduction at a large rocket launch site according to claim 1, characterized in that, A water tank pressurization distributor is installed on the top of the sealed water tank.
9. The equivalent verification system for water spray noise reduction at a large rocket launch site according to claim 1, characterized in that, A water outlet anti-vortex device is installed at the bottom of the sealed water tank.
10. The equivalent verification system for water spray noise reduction at a large rocket launch site according to claim 1, characterized in that, The pneumatic regulating valve and pneumatic quick-opening valve of the water pipeline are interlocked with the differential pressure level gauge of the water tank. When the liquid level drops to the bottom of the water tank, the pneumatic regulating valve and pneumatic quick-opening valve of the water pipeline are closed in time to avoid excessive discharge of water in the sealed water tank and water supply pipeline, and to prevent the generation of air hammer during testing.