An engine test cell superhigh pressure circulating cooling water system
By installing pressure sensors and electromagnetic flow meters in the ultra-high pressure circulating cooling water system of the engine test chamber, combined with pressure relief and bypass pipelines, the problem of providing accurate flow and water pressure in the existing technology under ultra-high pressure environment has been solved, thus realizing a variety of test requirements of the engine test bench.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AVIC CHANGSHA DESIGN & RES INST CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-03
AI Technical Summary
Existing cooling test equipment cannot stably provide accurate flow and water pressure under ultra-high pressure environment, and cannot meet the test requirements of engine test bench.
An ultra-high pressure circulating cooling water system for an engine test chamber was designed. By installing pressure sensors and electromagnetic flow meters, the pressure and flow at the front and rear ends of the engine test chamber are monitored. Combined with pressure relief pipelines and bypass pipelines, the pressure and flow are regulated to ensure the stable operation of the system under high pressure.
It achieves precise control of the inlet pressure and flow rate of the engine test chamber under ultra-high pressure environment, meeting various test requirements of the engine test bench. The system has a simple structure, reliable operation, and is easy to operate. It can control the water supply pressure pulsation within ±0.01Mpa.
Smart Images
Figure CN224455073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine testing technology, and in particular to an ultra-high pressure circulating cooling water system for an engine test chamber. Background Technology
[0002] During thermophysical testing of key components of air-breathing engines, high-pressure water cooling testing equipment is required, and the water consumption is large.
[0003] Circulating water cooling systems are typically classified into three pressure levels: low, medium, and high. Generally, low-pressure systems have more flexible pressure ranges, usually below 0.1 MPa; medium-pressure systems range from 0.15 to 0.6 MPa; and high-pressure systems range from 0.6 to 1.6 MPa. However, systems exceeding 1.6 MPa are classified as ultra-high-pressure circulating cooling water systems.
[0004] The existing cooling test device uses circulating water with a supply pressure of ≤1.6MPa. When the pressure is high, the back pressure of the circulating water cooling equipment is large, and the cooling tower cannot be used directly to cool the water temperature. At the same time, energy dissipation measures should be considered when the return water enters the water pool. Utility Model Content
[0005] The purpose of this invention is to provide an ultra-high pressure circulating cooling water system for an engine test chamber, which is suitable for use in high-pressure environments with stable and reliable water pressure, and meets various test requirements of engine test bench testing.
[0006] The technical solution of this utility model is: an ultra-high pressure circulating cooling water system for an engine test chamber, including an engine test chamber, a cooling tower, a cold water pool and a hot water pool. The water outlet of the engine test chamber is connected to the water inlet of the hot water pool through a first pipeline. An equipment outlet pressure sensor is provided on the first pipeline and is located close to the engine test chamber.
[0007] The outlet of the hot water tank is connected to the inlet of the cooling tower through a third pipeline. The third pipeline is equipped with a hot water supply pump set and a first valve. The hot water supply pump set is located close to the hot water tank. The first valve is located at both ends of the hot water supply pump set.
[0008] The outlet of the cooling tower is connected to the inlet of the cold water tank via a gravity pipe; the outlet of the cold water tank is connected to the engine test compartment via a second pipeline, on which a cold water supply pump set, a second valve, an electromagnetic flow meter and an equipment inlet pressure sensor are sequentially installed, and the cold water supply pump set is located close to the cold water tank.
[0009] The above solution can regulate the inlet pressure and flow rate of the engine test chamber by monitoring the pressure sensors and electromagnetic flow meters installed at the front and rear ends of the engine test chamber under high pressure, so that the pressure and flow rate meet the usage requirements, thereby meeting the various test needs of the engine test bench.
[0010] Preferably, a pressure relief pipeline is connected between the second pipeline and the cold water tank, and a pressure relief valve is provided on the pressure relief pipeline. The connection point of the pressure relief pipeline on the second pipeline is located between the cold water supply pump group and the engine test compartment.
[0011] Preferably, the second pipeline is connected to the first pipeline by a bypass pipeline, the bypass pipeline is equipped with a bypass electric valve, and the connection point of the bypass pipeline on the second pipeline is located between the cold water supply pump group and the engine test compartment.
[0012] Preferably, the second pipeline is equipped with a water pump outlet electric valve and an equipment inlet electric valve, the first pipeline is equipped with an equipment outlet electric valve, the water pump outlet electric valve is located near the outlet end of the cold water supply pump group, the equipment inlet electric valve is located near the inlet end of the engine test compartment, and the equipment outlet electric valve is located near the outlet end of the engine test compartment.
[0013] Preferably, a filter is provided between the second valve and the electromagnetic flow meter.
[0014] Preferably, the cold water tank is equipped with a first level gauge, and the hot water tank is equipped with a second level gauge.
[0015] Preferably, a partition wall is provided between the cold water pool and the hot water pool, and a water pool connecting hole is provided in the partition wall, which is located at the upper end of the partition wall.
[0016] Preferably, a cooling tower inlet temperature sensor is provided on the third pipeline, and a cooling tower outlet temperature sensor is provided on the gravity pipe.
[0017] Preferably, the cooling tower is positioned higher than the cold water pool.
[0018] Compared with related technologies, the beneficial effects of this utility model are as follows:
[0019] I. This utility model can regulate the inlet pressure and flow of the engine test chamber under ultra-high pressure environment by monitoring the pressure sensors and electromagnetic flow meters set at the front and rear ends of the engine test chamber, so that the pressure and flow meet the usage requirements, thereby meeting the various test needs of engine test bench testing.
[0020] II. This utility model solves the problem that the existing technology cannot meet the test requirements of providing accurate flow and stable water pressure for engine test bench testing under ultra-high pressure environment;
[0021] Third, the system of this utility model has a simple structure, reliable operation, and convenient operation, and can meet the requirement of controlling the water supply pressure pulsation in the engine test chamber within ±0.01Mpa. Attached Figure Description
[0022] Figure 1 A schematic diagram of the ultra-high pressure circulating cooling water system for the engine test chamber provided by this utility model.
[0023] In the attached diagram: 1. Cold water supply pump set; 2. Engine test chamber; 3. Cooling tower; 4. Cold water pool; 5. Hot water pool; 6. Hot water supply pump set; 7. Pool connecting hole; 8. First level gauge; 9. Pump outlet electric valve; 10. Pressure relief valve; 11. Equipment inlet electric valve; 12. Second valve; 13. Filter; 14. Electromagnetic flowmeter; 15. Equipment inlet pressure sensor; 16. Equipment outlet pressure sensor; 17. Equipment outlet temperature sensor; 18. Equipment outlet electric valve; 19. Bypass electric valve; 20. Cooling tower inlet temperature sensor; 21. First valve; 22. Cooling tower outlet temperature sensor; 23. Second level gauge; 24. Pressure relief pipeline; 25. Bypass pipeline; 26. First pipeline; 27. Second pipeline; 28. Third pipeline. Detailed Implementation
[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.
[0025] like Figure 1 As shown in the figure, the ultra-high pressure circulating cooling water system for an engine test chamber provided in this embodiment includes a cold water supply pump group 1, an engine test chamber 2, a cooling tower 3, a cold water pool 4, a hot water pool 5, and a hot water supply pump group 6.
[0026] The outlet of the cold water tank 4 is connected in sequence to the inlet of the cold water supply pump group 1 and the engine test compartment 2 via the second pipe 27. The outlet of the engine test compartment 2 is connected to the inlet of the hot water tank 5 via the first pipe 26. The outlet of the hot water tank 5 is connected in sequence to the inlet of the hot water supply pump group 6 and the cooling tower 3 via the third pipe 28. The outlet of the cooling tower 3 is connected to the inlet of the cold water tank 4 via a gravity pipe. The cooling tower 3 is positioned higher than the cold water tank 4.
[0027] The second pipeline 27 is equipped with a self-cooled water supply pump group 1, which is sequentially equipped with a pump outlet electric valve 9, an equipment inlet electric valve 11, a second valve 12, a filter 13, an electromagnetic flowmeter 14, and an equipment inlet pressure sensor 15. The first pipeline 26 is equipped with an equipment outlet pressure sensor 16, an equipment outlet temperature sensor 17, and an equipment outlet electric valve 18 sequentially from the engine test chamber 2.
[0028] The second pipeline 27 is connected to the cold water tank 4 by a pressure relief pipeline 24. The pressure relief pipeline 24 is equipped with a pressure relief valve 10. When the cold water supply pump group 1 is turned on and the engine test compartment 2 is not turned on, the pressure relief valve 10 drains the water in the second pipeline 27 back to the cold water tank 4, which can ensure that the outlet pressure of the cold water supply pump group 1 does not exceed the set pressure value of the cold water supply pump group 1, and prevent the cold water supply pump group 1 from being overloaded and damaged.
[0029] The pressure relief pipe 24 is connected to the second pipe 27 between the cold water supply pump group 1 and the engine test compartment 2.
[0030] The second pipeline 27 is connected to the first pipeline 26 by a bypass pipeline 25. The bypass pipeline 25 is equipped with a bypass electric valve 19. The connection point of the bypass pipeline 25 on the second pipeline 27 is located between the cold water supply pump group 1 and the engine test compartment 2.
[0031] The cold water tank 4 is equipped with a first level gauge 8, and the hot water tank 5 is equipped with a second level gauge 23. A partition wall is provided between the cold water tank 4 and the hot water tank 5, and a water tank connecting hole 7 is opened in the partition wall, located at the upper end of the partition wall. A filter screen is installed at the water tank connecting hole 7. Both the cold water tank 4 and the hot water tank 5 have a sewage collection pit at the bottom. The total volume of the cold water tank 4 and the hot water tank 5 is 30% of the maximum total circulating cooling water volume, which is the sum of the circulating cooling water volumes required by the engine test compartment.
[0032] The third pipeline 28 is equipped with a first valve 21 and a cooling tower inlet temperature sensor 20. The first valve 21 is located near the hot water supply pump group 6. The gravity pipe is equipped with a cooling tower outlet temperature sensor 22.
[0033] All the aforementioned sensors, valves, level gauges, and other electronic components are connected to the controller, which also includes an alarm module. The first valve 21 and the second valve 12 are gate valves.
[0034] This utility model provides a method for operating an ultra-high pressure circulating cooling water system for an engine test chamber, including:
[0035] When engine test chamber 2 needs to operate, the water pump outlet electric valve 9 and the cold water supply pump group 1 should be opened sequentially in advance. Once the pressure stabilizes, the equipment outlet electric valve 18 and the equipment inlet electric valve 11 should be opened sequentially. During initial operation, the second valve 12 and the bypass electric valve 19 should be manually adjusted by monitoring the electromagnetic flowmeter 14, equipment inlet pressure sensor 15, and equipment outlet pressure sensor 16 installed at the front and rear ends of engine test chamber 2 to achieve the required inlet pressure and flow rate. Simultaneously, the equipment outlet temperature sensor 17 should be monitored. Engine test chamber 2 should be started 5 minutes after the outlet temperature, flow rate, and pressure meet the required values. The implementation process involves heat exchange between cooling water and engine test chamber 2. For example, during engine test chamber 2 operation, hot water is output from the outlet end of engine test chamber 2, flows into hot water pool 5 through the first pipe 26, is pumped out of hot water pool 5 by hot water supply pump group 6, and enters the third pipe 28. Then, through the third pipe 28, it enters the cooling tower 3 for cooling. The cooled water then flows into cold water pool 4 through a gravity pipe. The cold water in cold water pool 4 is pumped out by cold water supply pump group 1 and enters the second pipe 27, then enters engine test chamber 2 through the second pipe 27. This achieves the cooling requirement of engine test chamber 2.
[0036] When the water level in the cold water tank 4 reaches the set low water level, the engine test chamber 2 and the cold water supply pump group 1 are automatically shut down in sequence (the electric valve 9 at the water pump outlet is in the normally open state), and the circulating water cooling is stopped.
[0037] Hot water tank 5 is connected to cold water tank 4 through water tank connection hole 7. When the temperature of the cooling tower inlet temperature sensor 20 is lower than the required temperature, the hot water supply pump group 6 and cooling tower 3 are stopped, and the circulating cooling water of hot water tank 5 can flow directly into cold water tank 4 through water tank connection hole 7. In the operation of the circulating cooling water system, this design is simple, energy-saving, cost-saving and easy to operate.
[0038] When the water level in the hot water tank 5 reaches the set high water level, the cooling tower 3 and the hot water supply pump group 6 are automatically started (the first valve 21 is normally open) to circulate water for cooling.
[0039] When the water level in the hot water tank 5 reaches the set low water level, the hot water supply pump group 6 is automatically shut off (the first valve 21 is in the normally open state), the cooling tower 3 is shut off, and the circulating water cooling is stopped.
[0040] This invention enables the manual adjustment of bypass valves and gate valves on the pipeline under high pressure by monitoring pressure sensors and electromagnetic flow meters installed at the front and rear ends of the engine test chamber. This achieves stable and reliable inlet water pressure and precise flow control for the engine test chamber equipment, thereby meeting various testing requirements of the engine test bench.
[0041] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An ultra-high pressure circulating cooling water system for an engine test chamber, comprising an engine test chamber (2), a cooling tower (3), a cold water pool (4), and a hot water pool (5), characterized in that, The outlet of the engine test chamber (2) is connected to the inlet of the hot water tank (5) through the first pipe (26). The first pipe (26) is equipped with an equipment outlet pressure sensor (16), which is located close to the engine test chamber (2). The outlet of the hot water tank (5) is connected to the inlet of the cooling tower (3) through a third pipeline (28). The third pipeline (28) is equipped with a hot water supply pump group (6) and a first valve (21). The hot water supply pump group (6) is located close to the hot water tank (5). The first valve (21) is located at both ends of the hot water supply pump group (6). The outlet of the cooling tower (3) is connected to the inlet of the cold water tank (4) through a gravity pipe; the outlet of the cold water tank (4) is connected to the engine test compartment (2) through a second pipeline (27). The second pipeline (27) is sequentially equipped with a cold water supply pump group (1), a second valve (12), an electromagnetic flow meter (14) and an equipment inlet pressure sensor (15). The cold water supply pump group (1) is located close to the cold water tank (4).
2. The engine test cell ultra-high pressure circulating cooling water system of claim 1, wherein, The second pipeline (27) is connected to the cold water tank (4) by a pressure relief pipeline (24), and a pressure relief valve (10) is provided on the pressure relief pipeline (24). The connection position of the pressure relief pipeline (24) on the second pipeline (27) is located between the cold water supply pump group (1) and the engine test compartment (2).
3. The engine test cell ultra-high pressure circulating cooling water system of claim 1, wherein, The second pipeline (27) is connected to the first pipeline (26) by a bypass pipeline (25), and the bypass pipeline (25) is equipped with a bypass electric valve (19). The connection position of the bypass pipeline (25) on the second pipeline (27) is located between the cold water supply pump group (1) and the engine test compartment (2).
4. The engine test cell ultra-high pressure circulating cooling water system of claim 1, wherein, The second pipeline (27) is equipped with a water pump outlet electric valve (9) and an equipment inlet electric valve (11), and the first pipeline (26) is equipped with an equipment outlet electric valve (18). The water pump outlet electric valve (9) is located near the outlet end of the cold water supply pump group (1), the equipment inlet electric valve (11) is located near the inlet end of the engine test compartment (2), and the equipment outlet electric valve (18) is located near the outlet end of the engine test compartment (2).
5. The engine test cell ultra-high pressure circulating cooling water system of claim 1, wherein, A filter (13) is provided between the second valve (12) and the electromagnetic flowmeter (14).
6. The engine test cell ultra-high pressure circulating cooling water system of claim 1, wherein, The cold water tank (4) is equipped with a first level gauge (8), and the hot water tank (5) is equipped with a second level gauge (23).
7. The ultra-high pressure circulating cooling water system for the engine test chamber according to claim 1, characterized in that, A partition wall is provided between the cold water pool (4) and the hot water pool (5), and a water pool connecting hole (7) is provided on the partition wall. The water pool connecting hole (7) is located at the upper end of the partition wall.
8. The engine test cell ultra-high pressure circulating cooling water system of claim 1, wherein, The third pipeline (28) is equipped with a cooling tower inlet temperature sensor (20), and the gravity pipe is equipped with a cooling tower outlet temperature sensor (22).
9. The engine test cell ultra-high pressure circulating cooling water system of claim 1, wherein, The cooling tower (3) is located higher than the cold water pool (4).