A liquid throttle ring flow test system

Abstract

The utility model provides a liquid throttle ring liquid flow test system, including: a medium tank for containing test medium; a medium supply device for providing test medium to the medium tank; a gas booster device for filling gas into the medium tank so that the pressure of the test medium meets the pressure required for the test; a test pipeline for measuring the flow resistance of the test piece through the test medium. The test system of the utility model provides the required flow and pressure for the throttle ring under test in the form of pressurized gas squeezing liquid, which effectively solves the problem of unstable flow pulsation in traditional test methods. The test system uses a high-precision flow control valve to adjust the flow and back pressure of the throttle ring under test. The flow regulation is accurate and fast, which effectively reduces the consumption of the test medium. The mass flow meter is used to measure the flow of the throttle ring under test, which ensures the accuracy of the test data. The test system is simple and reliable, providing reliable data support for rocket engine design, development and production.

Description

Technical Field

[0001] The utility model relates to the technical field of aerospace liquid oxygen-kerosene rocket engine testing, in particular to a liquid throttle ring liquid flow testing system. Background Art

[0002] At present, liquid throttle rings used in liquid oxygen-kerosene rocket engines need to undergo liquid flow tests after production to test whether the pressure drop of the throttle ring at the rated flow meets the design requirements. The traditional test system uses a plunger pump to provide the throttle ring with a medium that meets the test requirements, and a turbine flowmeter to measure the flow through the throttle ring. However, the test medium provided by the plunger pump has a pulsating pressure, which causes the medium flow through the throttle ring to be unstable. At the same time, the accuracy of the turbine flowmeter is very low, which has a certain impact on the accuracy of the test results. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a liquid throttle ring flow test system which can provide a test medium with a steady flow and no pulsation for the liquid throttle ring flow test, as well as more accurate and reliable test data, and provide data support for the design, development and production of liquid oxygen-kerosene rocket engines.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a liquid throttle ring liquid flow test system, comprising:

[0005] A medium tank, including a medium inlet, a medium outlet and an air inlet, for containing a test medium;

[0006] A medium supply device, connected to the medium inlet of the medium tank, for providing the test medium to the medium tank;

[0007] A gas booster device, connected to the gas inlet of the medium tank, is used to fill the medium tank with gas so that the pressure of the test medium in the medium tank meets the pressure required for the test;

[0008] The test pipeline is connected to the medium outlet of the medium tank and is used to measure the flow resistance of the test piece through the pressurized test medium.

[0009] Furthermore, the medium supply device includes a water inlet, a first stop valve, a deionized water purifier, a first filter, a first one-way valve and a water outlet in sequence, the water inlet is connected to a public water network, and the water outlet is connected to the medium inlet of the medium tank.

[0010] Furthermore, the gas boosting device sequentially includes a high-pressure gas source inlet, a first gas filter, a first gas shut-off valve, a first gas pressure gauge, a pressure reducer, a second gas pressure gauge, a second gas shut-off valve and a gas outlet, the high-pressure gas source inlet is connected to the high-pressure gas source supply device, and the gas outlet is connected to the gas inlet of the medium tank.

[0011] Furthermore, the test pipeline includes a pipeline water inlet, a second filter, a second stop valve, a mass flow meter, a first medium pressure sensor, a test piece installation position, a second medium pressure sensor, a third stop valve and a pipeline water outlet in sequence, the pipeline water inlet is connected to the medium outlet of the medium tank, and the test piece installation position is installed with a test piece.

[0012] Furthermore, the water outlet end of the test pipeline is connected to a drainage box.

[0013] Furthermore, the medium tank also includes a medium tank pressure gauge, a medium tank pressure sensor and an exhaust port, and the exhaust port is connected to the outside through a medium tank exhaust valve.

[0014] Furthermore, the exhaust port is provided with a muffler.

[0015] Furthermore, the medium tank also includes a safety valve.

[0016] Furthermore, the third stop valve is a precision flow regulating valve.

[0017] Furthermore, a drain port is provided at the bottom of the medium tank, and the drain port is connected to the outside through a medium tank drain stop valve.

[0018] The beneficial effects of the utility model are: the required flow and pressure are provided to the throttle ring under test in the form of pressurized gas squeezing liquid, which effectively solves the problem of unstable flow pulsation in traditional test methods. The test system uses a high-precision flow control valve to adjust the flow and back pressure of the throttle ring under test. The flow regulation is accurate and fast, which effectively reduces the consumption of the test medium. The flow of the throttle ring under test is measured by a mass flow meter to ensure the accuracy of the test data. The test system is simple and reliable, providing reliable data support for the design, development and production of rocket engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific structure of the utility model is described in detail below with reference to the accompanying drawings:

[0020] Figure 1 This is a system block diagram of the liquid throttle ring liquid flow test system of the utility model;

[0021] 11-high pressure gas source inlet; 12-first gas filter; 13-first gas stop valve; 14-first gas pressure gauge; 15-pressure reducer; 16-second gas pressure gauge; 17-second gas stop valve;

[0022] 21-water inlet; 22-first stop valve; 23-deionized water purifier; 24-first filter; 25-first one-way valve;

[0023] 31-medium tank; 32-medium tank drain stop valve; 33-medium tank pressure gauge; 34-medium tank pressure sensor; 35-safety valve; 36-medium tank exhaust valve; 37-muffler;

[0024] 41-second filter; 42-second stop valve; 43-mass flow meter; 44-first medium pressure sensor; 45-test piece; 46-second medium pressure sensor; 47-third stop valve;

[0025] 51-drain tank; 52-drain tank stop valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0032] Example

[0033] See also Figure 1 This embodiment provides a liquid throttle ring liquid flow test system, including:

[0034] The medium tank 31 includes a medium inlet, a medium outlet and an air inlet, and is used to contain the test medium;

[0035] A medium supply device, connected to the medium inlet of the medium tank, for providing the test medium to the medium tank 31;

[0036] A gas booster device, connected to the gas inlet of the medium tank, used to fill the gas into the medium tank 31 so that the pressure of the test medium in the medium tank 31 meets the pressure required for the test;

[0037] The test pipeline is connected to the medium outlet of the medium tank 31 and is used to measure the flow resistance of the test piece 45 using the pressurized test medium.

[0038] In this embodiment, the test medium is poured into the medium tank 31 from the medium inlet of the medium tank 31 in advance through the medium supply device, and then the gas is filled from the air inlet of the medium tank 31 through the gas boosting device to form an air pillow on the top of the medium tank 31. By continuously pumping in gas for pressurization, the air pillow is used to squeeze the test medium in the medium tank 31 so that the pressure of the test medium in the medium tank 31 meets the pressure required for the test. During the test, the gas boosting system is kept in a gas supply state. After the liquid level of the test medium in the medium tank 31 drops, the discharged space can be filled with gas in time, so that the test medium pressure at the medium outlet of the medium tank 31 is maintained constant, so that the test medium can stably pass through the test piece at the flow rate required for the test, thereby verifying the test piece and ensuring the accuracy of the test data.

[0039] The test medium in this embodiment is deionized water, which can well simulate the actual working environment of the test piece and ensure the accuracy of the test. At the same time, using water as the test medium can effectively reduce the test cost.

[0040] In order to ensure that the test medium meets the test conditions, the medium supply device includes a water inlet 21, a first stop valve 22, a deionized water purifier 23, a first filter 24, a first one-way valve 25 and a water outlet in sequence. The water inlet 21 is connected to the public water network, and the water outlet is connected to the medium inlet of the medium tank 31.

[0041] The water inlet end 21 of the medium supply device is connected to the public water network. When water needs to be added to the medium tank 31, the first stop valve 22 is opened, and the tap water enters the deionized water purifier 23 from the public water network. After purification and improvement treatment in the deionized water purifier 23, deionized water that can meet the test requirements is obtained. The deionized water continues to pass through the first filter 24 to filter out impurities in the deionized water to ensure the cleanliness of the test medium. The filtered deionized water enters the medium tank 31 through the first one-way valve 25 and the water outlet in turn. The first one-way valve 25 can allow deionized water to enter the medium tank 31, while preventing the test medium and gas in the medium tank 31 from flowing back, and can withstand the system pressure required for the test.

[0042] In order to inflate and pressurize the medium tank 31 so that the test medium in the medium tank 31 obtains sufficient pressure, the gas pressurizing device includes a high-pressure gas source inlet 11, a first gas filter 12, a first gas stop valve 13, a first gas pressure gauge 14, a pressure reducer 15, a second gas pressure gauge 16, a second gas stop valve 17 and a gas outlet end in sequence, the high-pressure gas source inlet 11 is connected to the high-pressure gas source supply device, and the gas outlet end is connected to the gas inlet of the medium tank 31.

[0043] The high-pressure gas source inlet 11 of the gas booster device is connected to the high-pressure gas source supply device. When the medium tank 31 needs to be inflated, the first gas stop valve 13 is opened, and the high-pressure gas enters the first gas filter 12 from the high-pressure gas source supply device. After the impurities in the high-pressure gas are filtered out by the first gas filter 12, clean high-pressure gas is obtained. The clean high-pressure gas continues to enter the pressure reducer 15 along the ventilation pipeline through the first gas stop valve 13. The pressure reducer 15 can reduce the pressure of the high-pressure gas source and provide the required boost pressure for the air pillow in the medium tank 31. The high-pressure gas after decompression passes through the second gas stop valve 17 and the gas outlet in turn into the medium tank 31, and forms an air pillow in the medium tank 31. The second gas stop valve 17 is used to control the on and off of the high-pressure gas after decompression, and control the speed of the pressure increase of the air pillow in the medium tank 31. The second gas stop valve 17 is kept in a fully open state during the test to ensure that the discharged space can be filled with high-pressure gas in time after the liquid level of the test medium in the medium tank 31 drops, so that the water pressure of the medium outlet of the medium tank 31 remains constant. In this embodiment, high-pressure nitrogen is used as the high-pressure gas source. Nitrogen is an inert gas with stable properties and easy acquisition, which can ensure the smooth progress of the experiment.

[0044] In order to obtain test data conveniently and accurately, the test pipeline includes a pipeline water inlet, a second filter 41, a second stop valve 42, a mass flow meter 43, a first medium pressure sensor 44, a test piece installation position, a second medium pressure sensor 46, a third stop valve 47 and a pipeline water outlet in sequence. The pipeline water inlet is connected to the medium outlet of the medium tank 31, and the test piece installation position is installed with a test piece 45.

[0045] The test pipeline is connected to the medium outlet of the medium tank 31 through the pipeline water inlet end. When the test is required, the test piece 45 to be tested is installed to the test piece installation position of the test pipeline, the second stop valve 42 is opened, and the test medium is filtered through the second filter 41 to ensure the cleanliness of the test medium. The filtered test medium passes through the mass flow meter 43, the test piece 45 and the third stop valve 47 in sequence, and flows out of the test pipeline from the pipeline water outlet end.

[0046] During the test, the second stop valve 42 is kept in a fully open state, and the flow rate of the test medium flowing through the test piece 45 is measured by the mass flow meter 43 to ensure that the test piece 45 is in the designed flow working state. The first medium pressure sensor 44 is used to measure the pressure of the test medium at the inlet end of the test piece 45 in real time, and the second medium pressure sensor 46 is used to measure the pressure of the test medium at the outlet end of the test piece 45 in real time. The third stop valve 47 is preferably a precision flow regulating valve, which can accurately adjust the medium flow rate flowing through the test piece 45 and the back pressure of the test piece outlet to better simulate the situation when the test piece 45 is in a normal working state.

[0047] The outlet of the test pipeline is connected to a drainage box 51, which can collect the test medium discharged from the outlet of the test pipeline to prevent the test medium from overflowing. The bottom of the drainage box 51 is provided with a drainage box drain port, and the drainage box drain port is connected to a drainage box stop valve 52. The drainage of the drainage box 51 is controlled by controlling the opening and closing of the drainage box stop valve 52.

[0048] In order to ensure the normal progress of the test, the medium tank 31 further includes a medium tank pressure gauge 33 , a medium tank pressure sensor 34 and an exhaust port, and the exhaust port is connected to the outside through a medium tank exhaust valve 36 .

[0049] The air pressure of the air pillow in the medium tank 31 can be monitored by the medium tank pressure gauge 33, and the pressure of the test medium can be monitored by the medium tank pressure sensor 34. In order to allow the medium supply device to smoothly fill the test medium into the medium tank 31, the medium tank 31 is also provided with an exhaust port, and the exhaust port is connected to the outside through the medium tank exhaust valve 36. When the test medium is filled into the medium tank 31, the medium tank exhaust valve 36 is opened, and the gas in the medium tank 31 is discharged from the exhaust port to the outside through the medium tank exhaust valve 36. After the test medium is filled, the medium tank exhaust valve 36 is closed to isolate the inside of the medium tank 31 from the outside.

[0050] In order to reduce the noise generated during exhaust, a muffler 37 is provided at the exhaust port.

[0051] The medium tank 31 also includes a safety valve 35. During the process of inflating the medium tank 31, when the air pressure of the air pillow in the medium tank 31 exceeds a set safety value, the gas can be discharged by controlling the safety valve 35 to avoid the risk of explosion caused by excessive air pressure in the medium tank 31, thereby ensuring the safe use of the medium tank 31.

[0052] In order to facilitate the emptying of the medium tank 31 after the test is completed, the medium tank 31 is also provided with a drain port, and a medium tank drain stop valve 32 is installed at the drain port. The medium tank 31 can be drained through the drain port by controlling the opening and closing of the medium tank drain stop valve 32. The medium tank drain stop valve 32 can withstand the system pressure required for the test. During the test, the medium tank drain stop valve 32 is in a normally closed state.

[0053] From the above description, it can be seen that the beneficial effects of the utility model are: the required flow and pressure are provided to the test throttle ring in the form of pressurized gas squeezing liquid, which effectively solves the problem of unstable flow pulsation in traditional test methods. The test system uses a high-precision flow control valve to adjust the flow and back pressure of the test throttle ring. The flow regulation is accurate and fast, which effectively reduces the consumption of the test medium. The flow of the test throttle ring is measured by a mass flow meter to ensure the accuracy of the test data. The test system is simple and reliable, providing reliable data support for rocket engine design, development and production.

[0054] The following describes a liquid throttling ring liquid flow test method using a liquid throttling ring liquid flow test system of this embodiment, including:

[0055] S1. Inject the test medium into the medium tank;

[0056] Open the first stop valve of the medium supply device and inject the test medium into the medium tank. During the injection of the test medium, keep the medium tank exhaust valve of the medium tank in an open state to discharge excess gas in the medium tank. After the test medium in the medium tank reaches the required amount, close the medium tank exhaust valve and the first stop valve of the medium supply device.

[0057] S2. Inflate the medium tank so that the pressure of the test medium in the medium tank meets the pressure required for the test;

[0058] Open the first gas stop valve of the gas booster device. After the pressure of the second gas pressure gauge reaches the required pressure, open the second gas stop valve, fill the medium tank with gas until the pressure is balanced, and maintain the gas supply state during the entire test process.

[0059] S3. Testing the test piece with the pressurized test medium to obtain test data;

[0060] After the test medium is prepared, the test piece is installed on the test pipeline, and the second stop valve is opened. The pressurized test medium can flow through the test piece along the test pipeline. By monitoring the value of the mass flow meter, the third stop valve can be adjusted to make the medium flow through the test piece and the outlet back pressure of the test piece meet the test requirements. After stabilization, the value of the mass flow meter, the first medium pressure sensor, and the second medium pressure sensor at this time are recorded, which are the required test data.

[0061] S4. Calculate the test data and obtain the test result data.

[0062] The test data specifically include the inlet pressure P of the test piece in and the outlet pressure P of the test piece out .

[0063] By formula: ΔP=P in -P out , the flow resistance parameter ΔP of the test piece can be calculated.

[0064] After completing the test, it also includes closing the first gas shut-off valve, stopping the supply of the high-pressure gas source supply device, opening the medium tank exhaust valve of the medium tank to exhaust and reduce the pressure of the medium tank until the internal air pressure of the medium tank is the same as that of the outside, closing the pressure reducer and the second gas shut-off valve of the gas pressurizing device, and then opening the medium tank drain shut-off valve of the medium tank to drain the test medium in the medium tank, and then closing the medium tank drain shut-off valve, and finally opening the drain valve of the drain box to discharge the test medium in the drain box, and randomly closing the drain valve to complete the time processing work.

[0065] It is easy for those skilled in the art to understand that the above-mentioned implementation modes can be freely combined and superimposed without conflict.

[0066] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A liquid throttle ring flow test system, characterized in that: include: A medium tank, including a medium inlet, a medium outlet and an air inlet, for containing a test medium; A medium supply device, connected to the medium inlet of the medium tank, for providing the test medium to the medium tank; A gas booster device, connected to the gas inlet of the medium tank, is used to fill the medium tank with gas so that the pressure of the test medium in the medium tank meets the pressure required for the test; The test pipeline is connected to the medium outlet of the medium tank and is used to measure the flow resistance of the test piece through the pressurized test medium.

2. The liquid throttle ring flow test system according to claim 1, characterized in that: The medium supply device includes a water inlet, a first stop valve, a deionized water purifier, a first filter, a first one-way valve and a water outlet in sequence. The water inlet is connected to a public water network, and the water outlet is connected to a medium inlet of the medium tank.

3. The liquid throttle ring flow test system according to claim 1, characterized in that: The gas boosting device sequentially comprises a high-pressure gas source inlet, a first gas filter, a first gas shut-off valve, a first gas pressure gauge, a pressure reducer, a second gas pressure gauge, a second gas shut-off valve and a gas outlet, wherein the high-pressure gas source inlet is connected to the high-pressure gas source supply device, and the gas outlet is connected to the gas inlet of the medium tank.

4. The liquid throttle ring flow test system according to claim 1, characterized in that: The test pipeline includes a pipeline water inlet, a second filter, a second stop valve, a mass flow meter, a first medium pressure sensor, a test piece installation position, a second medium pressure sensor, a third stop valve and a pipeline water outlet in sequence. The pipeline water inlet is connected to the medium outlet of the medium tank, and the test piece installation position is installed with a test piece.

5. The liquid throttle ring flow test system according to claim 4, characterized in that: The water outlet end of the test pipeline is connected to a drainage box.

6. The liquid throttle ring flow test system according to claim 1, characterized in that: The medium tank further comprises a medium tank pressure gauge, a medium tank pressure sensor and an exhaust port, and the exhaust port is communicated with the outside through a medium tank exhaust valve.

7. The liquid throttle ring flow test system according to claim 6, characterized in that: The exhaust port is provided with a muffler.

8. The liquid throttle ring flow test system according to claim 6, characterized in that: The medium tank also includes a safety valve.

9. The liquid throttle ring flow test system according to claim 4, characterized in that: The third stop valve is a precision flow regulating valve.

10. The liquid throttle ring flow test system according to claim 1, characterized in that: The tank bottom of the medium tank is provided with a drain port, and the drain port is communicated with the outside through a medium tank drain stop valve.

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