CN113790110B - Integrated liquid flow test system for rocket engine - Google Patents
Integrated liquid flow test system for rocket engine Download PDFInfo
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- CN113790110B CN113790110B CN202111353187.XA CN202111353187A CN113790110B CN 113790110 B CN113790110 B CN 113790110B CN 202111353187 A CN202111353187 A CN 202111353187A CN 113790110 B CN113790110 B CN 113790110B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
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Abstract
The invention belongs to a liquid flow test system, and aims to solve the technical problems of multiple subsystems, low system integration level, single function, narrow coverage area, and high construction cost and operation and maintenance cost of the existing liquid flow test system of a rocket engine, and provides a liquid flow test system for an integrated rocket engine, which comprises a basic supply module, a medium-low pressure supply module, a high-pressure supply module, a gas supply module, a flow measurement module, a pressure measurement module, a water collection module, a pump hydraulic test station, a high-pressure liquid flow test station, a medium-low pressure liquid flow test station and a control system, wherein the basic supply module provides low-pressure water storage and supply for the whole liquid flow test system, the high-pressure supply module provides high-pressure water for the whole liquid flow test system, the medium-low pressure supply module provides medium-low pressure water for the whole liquid flow test system, the gas supply module pressurizes and evacuates a vacuum pressure tank in the basic supply module, the flow measurement module provides a flow measurement function for the whole liquid flow test system.
Description
Technical Field
The invention belongs to a liquid flow test system, and particularly relates to a liquid flow test system for an integrated rocket engine.
Background
In the process of rocket engine development and production, a large number of tests are required to verify the performance of the rocket engine. The tests mainly involved comprise a vibration test, a strength test, an environment test, a material test, a liquid flow test, a pneumatic test, a thermal test run examination and the like.
The liquid flow test is used as an important ring of the whole verification process, and parts needing to be subjected to the liquid flow test in the whole engine account for 70-80% of the types of the parts of the whole engine system, so that the liquid flow test is particularly important in the development process of the liquid rocket engine. Generally, the parts required for the liquid flow test are mainly: thrust chamber, generator, turbopump, valve, regulator, cavitation pipe, throttle original part and assembly line etc..
In a conventional flow testing system, the different components are tested by means of corresponding special test stands: such as a turbo pump flow test, in a pump hydraulics test system; the low-pressure large-flow thrust chamber, the valve and the like are carried out in a special medium-low pressure test system; the high-pressure small-flow generator, the cavitation pipe and the regulator are carried out in a high-pressure test system. Meanwhile, each test system consists of independent sub-test systems with various specifications according to different thrust grades, for example, a pump hydraulic test bed is divided into a plurality of independent sub-test systems according to different thrust grades and power and rotating speed grades.
Therefore, although the liquid flow test system adopted by the traditional rocket engine has simple measurement and low requirement on testers, the traditional rocket engine still has a plurality of defects: the system has the advantages of multiple test subsystems, low system integration level, single system function, narrow coverage, high construction cost, high operation and maintenance cost and the like.
Disclosure of Invention
The invention provides a liquid flow test system for an integrated rocket engine, aiming at solving the technical problems of more subsystems, low system integration level, single function, narrow coverage, high construction cost and high operation and maintenance cost of the liquid flow test system of the rocket engine at present.
In order to achieve the purpose, the invention provides the following technical scheme:
a liquid flow test system for an integrated rocket engine is characterized by comprising a basic supply module, a medium-low pressure supply module, a high-pressure supply module, a gas supply module, a flow measurement module, a pressure measurement module, a water collecting and returning module, a pump hydraulic test station, a high-pressure liquid flow test station, a medium-low pressure liquid flow test station and a control system;
the basic supply module is respectively connected with the medium-low pressure supply module, the high pressure supply module, the pump hydraulic test station, the gas supply module and the water collection and return module;
the inlet end of the flow measurement module is respectively connected with the pump hydraulic test station, the middle-low pressure supply module and the high pressure supply module, and the outlet end of the flow measurement module is respectively connected with the high pressure liquid flow test station, the middle-low pressure liquid flow test station and the water collecting and returning module;
the pressure measurement module is respectively connected with the pump hydraulic test station, the high-pressure liquid flow test station and the middle-low pressure liquid flow test station;
the control system is respectively connected with the medium-low pressure supply module, the high pressure supply module, the gas supply module, the flow measurement module, the pressure measurement module, the pump hydraulic test station, the high pressure liquid flow test station and the medium-low pressure liquid flow test station, and is used for controlling the working states of the medium-low pressure supply module, the high pressure supply module, the gas supply module, the pump hydraulic test station, the high pressure liquid flow test station and the medium-low pressure liquid flow test station according to test requirements, acquiring test data of the flow measurement module and the pressure measurement module and the pump hydraulic test station, and performing corresponding data analysis according to the acquired test data.
Furthermore, the flow measurement module comprises three flow measurement units, and an isolation valve is arranged between each flow measurement unit, so that each flow measurement unit can work independently;
the inlet ends of the three flow measurement units are respectively connected with a water outlet of a pump hydraulic test station, a water outlet of a medium-low pressure supply module and a water outlet of a high-pressure supply module, and the outlet ends of the three flow measurement units are respectively connected with a water collecting and returning module, a water inlet of a high-pressure liquid flow test station and a water inlet of a medium-low pressure liquid flow test station.
Further, the flow measurement unit comprises at least two flow measurement groups arranged in parallel;
the flow measurement group comprises an isolation valve, a flowmeter and a regulating valve which are sequentially connected from an inlet end to an outlet end; the inlet of a parallel main pipeline of each flow measurement group is respectively connected with a pump hydraulic test station, a medium-low pressure supply module and a high-pressure supply module, and the outlet of the parallel main pipeline is respectively connected with a water collection and return module, a water flow inlet of a high-pressure liquid flow test station and a water flow inlet of a medium-low pressure liquid flow test station;
in the flow measurement unit, the accuracy of the flow meter in one flow measurement group is higher than the accuracy of the flow meters in the other flow measurement groups.
Further, the basic supply module comprises a filling purification assembly, an open/closed low-pressure water tank, a supply main pipe, a preposed booster pump and a vacuum pressure tank which are connected in sequence;
the vacuum pressure tank is respectively connected with the gas supply module, the high-pressure supply module and the pump hydraulic test station;
the outlet of the supply main pipe is connected with a medium-low pressure supply module, one path of the outlet end of the medium-low pressure supply module is connected with an open/closed low-pressure water tank, and the other path of the outlet end of the medium-low pressure supply module is connected with the inlet of a parallel main pipeline of a flow measurement group connected with the medium-low pressure supply module; a pressure reducing valve, an isolating valve and a one-way valve are sequentially connected between the outlet end of the middle and low pressure supply module and the open/closed low pressure water tank;
and the filling and purifying assembly is respectively connected with the water source and the water collecting and returning module.
Further, the basic supply module further comprises a sewage drainage assembly;
the sewage drainage assembly is respectively connected with the open/closed low-pressure water tank, the supply main pipe and the vacuum pressure tank.
Further, the medium and low pressure supply module comprises a plurality of groups of medium and low pressure supply units arranged in parallel, and each medium and low pressure supply unit comprises a centrifugal pump, a one-way valve and an isolation valve which are sequentially arranged from an inlet end to an outlet end.
Furthermore, the high-pressure supply module comprises a plurality of groups of displacement pumps which are arranged in parallel, and a check valve and an overflow valve are sequentially arranged between the inlet and the outlet of each displacement pump in parallel;
the conducting direction of the one-way valve is the direction from the outlet to the inlet of the displacement pump.
Further, the pump hydraulic test station comprises a motor, a first gear box, a second gear box, a first torque meter set and a second torque meter set;
the input end of the first gear box and the input end of the second gear box are respectively connected with output shafts at two ends of the motor, and the output end of the first gear box and the output end of the second gear box are respectively connected with the first torque instrument group and the second torque instrument group;
the other ends of the first torque meter group and the second torque meter group are respectively provided with a first test pump position and a second test pump position, and the first torque meter group and the second torque meter group have different test accuracies;
the water inlets of the first test pump position and the second test pump position are respectively connected with the vacuum pressure tank through a filter screen and an isolation valve in sequence, the water outlets are respectively connected with the inlet of the parallel main pipeline of the flow measurement group through a one-way valve, and the outlet of the parallel main pipeline of the flow measurement group is connected with the water collecting and returning module.
Further, the pressure measurement module comprises a plurality of groups of pressure measurement units;
the pressure measuring unit comprises an instrument valve, a quick connector and any one of a pressure gauge or a vacuum pressure gauge; the instrument valve is arranged between the quick connector and the pressure gauge or the vacuum pressure gauge;
the pressure gauge or the vacuum pressure gauge is connected to the water inlet pipeline and/or the water outlet pipeline of the pump hydraulic power testing station, the high-pressure liquid flow testing station and the medium-low pressure liquid flow testing station through quick connectors.
Furthermore, the control system comprises a high-voltage and low-voltage electric and frequency conversion module, a switching module, a measurement and acquisition module, a data analysis module and a visualization module;
the high-low voltage electric and frequency conversion module is respectively connected with the basic supply module, the medium-low voltage supply module, the high-voltage supply module, the gas supply module, the water collection and return module and the pump hydraulic test station and is used for supplying power and adjusting output;
the switching module is respectively connected with the pump hydraulic test station, the high-pressure liquid flow test station and the medium-low pressure liquid flow test station and is used for controlling the working states of the pump hydraulic test station, the high-pressure liquid flow test station and the medium-low pressure liquid flow test station;
the measurement acquisition module is respectively connected with the flow measurement module, the pressure measurement module and the pump hydraulic test station and is used for acquiring test data of the flow measurement module, the pressure measurement module and the pump hydraulic test station;
the data analysis module is connected with the measurement acquisition module and is used for carrying out data analysis processing on the test data acquired by the measurement acquisition module;
the visualization module is connected with the data analysis module and used for displaying the data analysis processing result of the data analysis module.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention discloses a liquid flow test system for an integrated rocket engine, which comprises a basic supply module, a medium-low pressure supply module, a high-pressure supply module, a gas supply module, a flow measurement module, a pressure measurement module, a water collection and return module, a pump hydraulic test station, a high-pressure liquid flow test station, a medium-low pressure liquid flow test station and a control system, wherein the modules are respectively designed in an integrated manner, and a modularized form is adopted, so that liquid flow tests of liquid rocket engines with different thrust levels can be completed depending on one system, the pump hydraulic test station, the high-pressure liquid flow test station and the medium-low pressure liquid flow test station can simultaneously perform test tests or respectively perform test tests independently, the whole investment cost is low, the range of covering parts capable of performing tests is wide, the measurable range is large, the system integration level is high, and the operation and maintenance cost is low.
2. The control system provided by the invention can effectively control the switching and working states of the three testing stations by matching with hardware in each module, so that the three testing stations can work simultaneously and can also work independently.
3. The flow measurement module can provide a flow measurement function for the whole liquid flow test system, wherein each flow measurement unit can work independently through the arranged isolation valve to measure the flow of each station respectively, in addition, any flow measurement group in each flow measurement unit can control the flow measurement precision through adopting a high-precision flowmeter, and the design mode can ensure the flow measurement precision of the whole liquid flow test system while saving the cost.
Drawings
FIG. 1 is a schematic view of an embodiment of a fluid testing system for an integrated rocket engine according to the present invention;
FIG. 2 is a schematic diagram of the basic supply module of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the low and medium voltage supply module of FIG. 1 according to the present invention;
FIG. 4 is a schematic diagram of the high pressure supply module of FIG. 1 according to the present invention;
FIG. 5 is a schematic view of the gas supply module of FIG. 1 according to the present invention;
FIG. 6 is a schematic view of the backwater collecting module of FIG. 1 according to the present invention;
FIG. 7 is a schematic view of the flow measurement module of FIG. 1 in accordance with the present invention;
FIG. 8 is a schematic view of the pressure measurement module of FIG. 1 according to the present invention;
FIG. 9 is a schematic view of the hydraulic testing station of the pump of FIG. 1 according to the present invention;
the system comprises a 1-basic supply module, a 101-filling purification assembly, a 102-open/closed low-pressure water tank, a 103-main supply pipe, a 104-preposed booster pump, a 105-vacuum pressure tank, a 106-water source, a 107-sewage drainage assembly, a 2-middle and low-pressure supply module, a 3-high-pressure supply module, a 4-gas supply module, a 5-flow measurement module, a 6-pressure measurement module, a 7-backwater collection module, an 8-pump hydraulic test station, an 801-motor, an 802-first gear box, a 803-second gear box, an 804-first torque instrument group, a 805-second torque instrument group, an 806-first test pump station, an 807-second test pump station, a 9-high-pressure liquid flow test station, a 10-middle and low-pressure liquid flow test station, a water pump, 11-control system, 12-flow measuring unit, 13-flow measuring group, 14-water collecting tank, 15-high pressure tested piece and 16-low pressure tested piece.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments do not limit the present invention.
The invention provides a liquid flow test system for an integrated rocket engine, which adopts integrated and modularized design, can independently complete liquid flow tests of liquid rocket engines with different thrust levels, and can simultaneously test a pump hydraulic test station 8, a high-pressure liquid flow test station 9 and a medium-low pressure liquid flow test station 10 or respectively independently test according to test requirements, thereby greatly reducing the construction, operation and maintenance cost, improving the equipment utilization rate, and simplifying the management, control and operation of the test system through the integrated test system.
The flow testing system consists of seven large modules, three testing stations and a control system 11. Each module and station set up a plurality of external interfaces, through the connecting line intercommunication between, switch control through control system 11 and module hardware, but three test station autonomous working also can simultaneous working.
As shown in fig. 1, the composition and function of seven large modules, three testing stations and a control system 11 are specifically that the liquid flow testing system comprises a basic supply module 1, a medium-low pressure supply module 2, a high pressure supply module 3, a gas supply module 4, a flow measuring module 5, a pressure measuring module 6, a water collecting and returning module 7, a pump hydraulic testing station 8, a high pressure liquid flow testing station 9, a medium-low pressure liquid flow testing station 10 and a control system 11.
The basic supply module 1 is respectively connected with the medium-low pressure supply module 2, the high pressure supply module 3, the pump hydraulic test station 8, the gas supply module 4 and the water collecting and returning module 7, and the basic supply module 1 provides low-pressure water storage and supply for the whole liquid flow test system. As shown in fig. 2, low-pressure water sequentially enters the open/closed low-pressure water tank 102 and the main supply pipe 103 from a water source 106 through the filling and purifying assembly 101, enters the vacuum pressure tank 105 after being preliminarily pressurized by the pre-booster pump 104, after the basic supply module 1 operates for a period of time, sewage can be discharged from the open/closed low-pressure water tank 102, the main supply pipe 103 and the vacuum pressure tank 105 through the sewage discharge assembly 107, an isolation valve GLF01 and a check valve DXF01 are sequentially arranged between the filling and purifying assembly 101 and the open/closed low-pressure water tank 102, an isolation valve GLF02 is arranged in front of an inlet of the sewage discharge assembly 107, and sewage discharged from the open/closed low-pressure water tank 102, the main supply pipe 103 and the vacuum pressure tank 105 enters the sewage discharge assembly 107 through the isolation valve GLF 02. The main supply pipe 103 supplies water to the medium and low pressure supply module 2 through an isolation valve GLF31 and a strainer LW31 in sequence. At the outlet end of the medium and low pressure supply module 2, one branch pipeline returns water to the open/closed low pressure water tank 102 through a pressure reducing valve JYF31, an isolating valve GLF32 and a check valve DXF31 in sequence, and the other branch pipeline is communicated with the flow measurement module 5. The vacuum pressure tank 105 supplies water to the high-pressure supply module 3 through an isolation valve GLF51 and a filter net LW51 in sequence on one hand, and directly supplies water to the pump hydraulic test station 8 on the other hand. The gas supply module 4 pressurizes and evacuates the vacuum pressure tank 105 in the base supply module 1 to provide an appropriate pressure thereto.
As shown in fig. 3, the medium and low pressure supply module 2 includes a plurality of sets of medium and low pressure supply units arranged in parallel, each of which includes a centrifugal pump, a check valve, and an isolation valve arranged in sequence from an inlet end to an outlet end. The medium and low pressure supply module 2 provides medium and low pressure water for the whole liquid flow test system, water is introduced from a supply main pipe 103 of the basic supply module through an isolation valve GLF31 and a filter screen LW31, the water is connected in parallel and regulated through a plurality of centrifugal pump sets, meanwhile, medium and low pressure water with different flow rates and pressures is provided for the liquid flow test system by combining a return circuit from the outlet end of the medium and low pressure supply module 2 to the open/closed low pressure water tank 102 and the control of a control system, wherein the adjustable minimum precision of the medium and low pressure water supply flow rate is ensured by the minimum flow rate of the centrifugal pump sets and the precision of a flow meter in a flow measurement set 13 connected with the medium and low pressure supply module 2 in the flow measurement unit 12. The number of centrifugal pump sets can be adjusted according to actual requirements, in this embodiment, four centrifugal pump sets are connected in parallel to form the centrifugal pump set, and in practical application, any centrifugal pump set can be used as required (for example, centrifugal pump L40, check valve DXF40 and isolation valve GLF40 form one centrifugal pump set).
As shown in fig. 4, which is a schematic diagram of the high-pressure supply module 3, the high-pressure supply module 3 includes a plurality of sets of displacement pumps arranged in parallel, a check valve and an overflow valve are further sequentially arranged in parallel between an inlet and an outlet of each displacement pump, and a conduction direction of the check valve is an outlet-to-inlet direction of the displacement pump. The high pressure supply module 3 provides high pressure water for the entire flow testing system. Water is introduced from a vacuum pressure tank 105 of the basic supply module 1 through an isolation valve GLF51 and a filter screen LW51, a plurality of volume pump sets of the high-pressure supply module 3 are connected in parallel and regulated in speed, and high-pressure water with different flow rates and pressures is provided for a liquid flow test system in combination with the control of a control system 11, wherein the adjustable minimum precision of the water supply flow rate of the high-pressure supply module 3 is ensured through the minimum flow rate of the volume pump sets and the precision of a flowmeter in a flow measurement set 13 connected with the high-pressure supply module 3 in a flow measurement unit 12. The number of the volume pump groups can be adjusted according to actual requirements, in the embodiment, four volume pump groups are connected in parallel, and in practical application, any number of the volume pump groups can be started according to requirements (for example, one volume pump group is formed by the volume pump R60, the check valve DXF60 and the overflow valve YLF 60).
As shown in fig. 5, which is a detailed schematic diagram of the gas supply module 4, the gas supply module 4 is used for pressurizing and evacuating the vacuum pressure tank 105 in the base supply module 1, and the gas supply module 4 can be shared with the corresponding gas module in the factory. The gas supply module 4 comprises at least one set of vacuum pump, a set of compressor and accessories thereof, and is provided with a perfect pressure measuring device, the gas supply module 4 is connected to the control system 11, and the working state of the gas supply module is controlled by the control system 11. In one embodiment of the invention, the gas supply module 4 comprises a vacuum pump, a compressor, a # 1 separator, a # 2 separator, a three-way valve, a pressure transmitter and a vacuum pressure gauge, the compressor is connected with the No. 2 joint of the three-way valve, the # 1 separator is arranged between the compressor and the No. 2 joint of the three-way valve, the vacuum pump is connected with the No. 3 joint of the three-way valve, the # 2 separator is arranged between the vacuum pump and the No. 3 joint of the three-way valve, the # 1 separator and the # 2 separator are mainly used for purifying gas, the pressure transmitter and the vacuum pressure gauge are arranged on a pipeline communicated with the No. 1 joint of the three-way valve through an instrument valve, the pressure transmitter and the vacuum pressure gauge are used for pressure acquisition, the instrument valve is used for opening and closing during instrument isolation and maintenance, the switching work of the vacuum pump and the compressor is controlled through the switching between the No. 2 joint and the No. 3 joint of the three-way valve, and pressurization or vacuum pumping of the system is realized.
As shown in fig. 6, the water collection module 7 collects water after the tests of the pump hydraulic test station 8, the high-pressure liquid flow test station 9 and the medium-low pressure liquid flow test station 10, and conveys the water to the filling and purification assembly 101 of the basic supply module 1 through the water return pump, so as to complete the water circulation of the tests.
Fig. 7 shows a flow measurement module 5, and the flow measurement module 5 provides a flow measurement function for the whole flow test system. The flow measurement module 5 comprises three flow measurement units 12, an isolation valve is arranged between each flow measurement unit 12, so that each flow measurement unit 12 can work independently, an isolation valve GLF23 is arranged between the inlet ends of the first flow measurement unit 12 and the second flow measurement unit 12, an isolation valve GLF24 is arranged between the outlet ends of the first flow measurement unit 12 and the second flow measurement unit 12, an isolation valve GLF25 is arranged between the inlet ends of the second flow measurement unit 12 and the third flow measurement unit 12, an isolation valve GLF26 is arranged between the outlet ends of the second flow measurement unit 12 and the third flow measurement unit 12, an isolation valve GLF27 is arranged between the inlet ends of the first flow measurement unit 12 and the third flow measurement unit 12, and an isolation valve GLF28 is arranged between the outlet ends of the first flow measurement unit 12 and the third flow measurement unit 12.
The inlet ends of the three flow measuring units 12 are respectively connected with the water outlet of the pump hydraulic test station 8, the water outlet of the medium-low pressure supply module 2 and the water outlet of the high pressure supply module 3, an isolation valve GLF13 is arranged between the inlet end of the flow measuring unit 12 and the water outlet of the pump hydraulic test station 8, an isolation valve GLF33 is arranged between the inlet end of the flow measuring unit 12 and the water outlet of the medium-low pressure supply module 2, and an isolation valve GLF52 is arranged between the inlet end of the flow measuring unit 12 and the water outlet of the high pressure supply module 3.
The outlet ends of the three flow measuring units 12 are respectively connected with the water collecting and returning module 7, the water flow inlet of the high-pressure liquid flow testing station 9 and the water flow inlet of the medium-low pressure liquid flow testing station 10. An isolating valve GLF14 and a pressure reducing valve JYF11 are sequentially arranged between the outlet end of the flow measuring unit 12 and the water collecting and returning module 7, an isolating valve GLF53 is arranged between the outlet end of the flow measuring unit 12 and the water flow inlet of the high-pressure liquid flow testing station 9, and an isolating valve GLF34 is arranged between the outlet end of the flow measuring unit 12 and the water flow inlet of the medium-low pressure liquid flow testing station 10.
In addition, the number of the flow measurement units 12 can be more than three, and the flow measurement units can be set according to the actual measurement requirements of each station.
The flow measuring unit 12 comprises at least two flow measuring groups 13 arranged in parallel, each flow measuring unit 12 in the embodiment is provided with three flow measuring groups 13, each flow measuring group 13 comprises an isolation valve, a flowmeter and a regulating valve which are sequentially connected from an inlet end to an outlet end, a parallel main pipeline inlet of each flow measuring group 13 is respectively connected with the pump hydraulic testing station 8, the medium and low pressure supply module 2 and the high pressure supply module 3, and a parallel main pipeline outlet is respectively connected with the water collecting and returning module 7, the water flow inlet of the high pressure liquid flow testing station 9 and the water flow inlet of the medium and low pressure liquid flow testing station 10. In addition, in the flow measurement units 12, the accuracy of the flow meter in one flow measurement group 13 is higher than that of the flow meters in the other flow measurement groups 13, for example, the flow measurement unit 12 connected to the backwater collecting module 7 in fig. 7 is taken as an example, wherein the accuracy of the flow meter LLJ20 is higher than that of the flow meters LLJ21 and LLJ22, and the flow measurement group 13 in which the flow meter LLJ20 is located is used for flow accuracy control.
As shown in fig. 8, the pressure measurement module 6 is a pressure measurement module 6, the pressure measurement module 6 provides pressure measurement for the liquid flow test system, the pressure measurement module 6 includes a plurality of sets of pressure measurement units (at least three sets), each pressure measurement unit includes an instrument valve and a quick coupling, and any one of a pressure gauge or a vacuum pressure gauge, wherein the instrument valve is disposed between the quick coupling and the pressure gauge or the vacuum pressure gauge. Taking one of the pressure measuring units as an example, the pressure gauge P01 or the vacuum pressure gauge PT01 is connected to the water inlet pipeline and/or the water outlet pipeline of the pump hydraulics testing station 8 through a quick connector KJ 01. During actual test, the corresponding pressure measurement units can be selected according to requirements, and the pressure measurement precision and the measuring range of the pressure measurement units are ensured by each group of pressure measurement units. Pressure measurement module 6 can install on the spot also can wholly integrate to the installation sled, constitutes independent module, makes things convenient for dilatation, maintenance, change.
The three test stations are composed and function as follows:
as shown in fig. 9, the pump hydraulic testing station 8 includes a motor 801, a first gear box 802, a second gear box 803, a first torque meter group 804 and a second torque meter group 805, the motor 801 employs a double-extension-shaft variable frequency motor, an input end of the first gear box 802 and an input end of the second gear box 803 are respectively connected to output shafts at two ends of the motor 801, an output end of the first gear box 802 and an output end of the second gear box 803 are respectively connected to the first torque meter group 804 and the second torque meter group 805, the other ends of the first torque meter group 804 and the second torque meter group 805 are respectively provided with a first test pump position 806 and a second test pump position, testing accuracies of the first torque meter group 804 and the second torque meter group 805 are different, water inlets of the first test pump position 806 and the second test pump position 807 are respectively connected to a vacuum pressure tank 105 through a filter screen and an isolation valve, water outlets are respectively connected to a parallel main pipeline inlet of a flow measurement group 13 through a one-way valve, the parallel main pipeline outlet of the flow measurement group 13 is connected with the water collecting and returning module 7. Two ends of the motor 801 are respectively provided with a set of test pump positions, wherein the first test pump position 806 can be set as a high-power test station, the maximum power can be tested at 5000kW, and the maximum rotation speed is 20000 r/min; the second test pump station 807 is set as a low-power test station, and can test the maximum power of 1800kW and the maximum rotation speed of 40000 r/min; the first test pump level 806 and the second test pump level 807 may not be measured simultaneously. The motor 801, the first gear box 802 and the second gear box 803 are arranged in a single set of fixed components without changing and adjusting, and the first torque meter group 804 and the second torque meter group 805 can be arranged in multiple sets and are adapted to be installed with torque meter groups of different specifications and accuracies according to the test accuracy requirement. The pump hydraulic test station 8 can meet the hydraulic test of the turbine pump of a 2 t-100 t class engine through various combinations. During testing, the pump hydraulic test station 8 draws water from the vacuum pressure tank 105, enters the first test pump position 806 or the second test pump position 807 through the isolation valve GLF11 or the isolation valve GLF12, after being accelerated by the motor 801 through the first gear box 802 or the second gear box 803, the motor 801 passes through the corresponding first torque meter group 804 or the second torque meter group 805 to measure speed and side torque, outputs power to the test pump located at the first test pump position 806 or the second test pump group 807, pressurizes water by the test pump, then passes through the check valve DXF11 or the check valve DXF12, then flows through the isolation valve GLF13 to flow into the water collection module 5, then is decompressed by the decompression valve JYF11, then is discharged into the water collection and return module 7 through the isolation valve GLF14, and finally returns to the basic supply module 1. The flow measurement is completed through the flow measurement module 5, and the side pressure point is arranged on the pipeline of the pump hydraulic test station 8 and is guided to the pressure measurement module 6 to complete the pressure measurement. The measurement results of flow, torque, pressure, rotation speed and the like enter the control system 11, and are analyzed and processed to form a measurement report.
The medium-low pressure liquid flow test station 10 is mainly used for completing liquid flow tests of large-flow medium-low pressure parts such as a thrust chamber, a main valve, a main pipeline orifice plate, a throttling element and the like. During the test, the middle and low pressure liquid flow test station 10 draws water from the middle and low pressure supply module 2, enters the flow measurement module after backflow adjustment, enters the tested piece, enters the water collection and return module 7 after the test is finished, finally returns to the basic supply module 1, the flow measurement is finished through the flow measurement module 5, lateral pressure points are arranged on an inlet and outlet pipeline or a tested piece body of the middle and low pressure liquid flow test station 10, and the pressure points are led to the pressure measurement module 6 to finish the pressure measurement. The measurement results of the flow rate, the pressure and the like enter the control system 11, and are analyzed and processed to form a measurement report.
The high-pressure liquid flow test station 9 is used for conducting water diversion from the high-pressure supply module 3, enabling the water to enter a tested piece through the flow measurement module 5, enabling the tested piece to enter the water collecting and returning module 7 after the test is completed, and finally enabling the tested piece to return to the basic supply module 1, and the high-pressure liquid flow test station 9 can be used for completing liquid flow tests of small-flow high-pressure parts such as a generator, an auxiliary valve, an auxiliary pipeline, an auxiliary way orifice plate, a throttling element, an auxiliary way regulator and a cavitation pipe.
In addition, the high-pressure liquid flow test station 9 and the pump hydraulic test station 8 can complete liquid flow tests of high-flow and high-pressure parts (such as a main path regulator and a cavitation pipe).
The control system 11 mainly comprises a high-low voltage electrical and frequency conversion module, a switching module, a measurement acquisition module, a data analysis module, a visualization module and other accessories, wherein the high-low voltage electrical and frequency conversion module is respectively connected with a basic supply module 1, a medium-low voltage supply module 2, a high-voltage supply module 3, a gas supply module 4, a water collection and return module 7 and a pump hydraulic test station 8, the high-low voltage electrical part provides power for each module, and the frequency conversion part changes the rotating speed of a power component in each module by changing the frequency of the power supply so as to meet the test requirements. The switching module is respectively connected with the pump hydraulic test station 8, the high-pressure liquid flow test station 9 and the medium-low pressure liquid flow test station 10, and is used for controlling the working states of the pump hydraulic test station 8, the high-pressure liquid flow test station 9 and the medium-low pressure liquid flow test station 10 and switching to one or any station to work according to experimental needs. The measurement acquisition module is respectively connected with the flow measurement module 5, the pressure measurement module 6 and the pump hydraulic test station 8 and is used for acquiring test data of the pump hydraulic test station. And the data analysis module is connected with the measurement acquisition module and is used for carrying out data analysis processing on the test data acquired by the measurement acquisition module. The visualization module is connected with the data analysis module and used for displaying the data analysis processing result of the data analysis module, and the visualization module can adopt interactive screen display hardware. The control system 11 can adopt a set of hardware, 3 sets of independent visual platforms are respectively arranged, and the three stations work simultaneously by combining with each module hardware device.
The basic supply module 1 and the gas supply module 4 are used jointly, and can provide media with different flow meter pressures for three test stations, specifically: water is introduced from a water source 106, treated by a filling and purifying assembly 101, enters an open/closed low-pressure water tank 102 through an isolation valve GLF01 and a check valve DXF01, enters a supply main pipe 103, is pressurized by a pre-booster pump 104, enters a vacuum pressure tank 105, and the pressure of the vacuum pressure tank 105 is regulated by a gas supply module 4. Wherein, the middle and low pressure liquid flow test station 10 draws water from the main supply pipe 103, and the pump hydraulic test station 8 and the high pressure liquid flow test station 9 are supplied with water by the vacuum pressure tank 105. In the cavitation test of the pump, the vacuum pressure tank 105 needs to be in a vacuum state, and in the other tests, the vacuum pressure tank is in a positive pressure state. In a vacuum state: the pre-booster pump 104 is turned off and vacuum is pumped down by the vacuum pump in the gas supply module 4, reducing the canister pressure; in a positive pressure state: the booster pump 104 is turned on to boost pressure, and at the same time, the tank is boosted by the compressor, and the tank pressure is stabilized during the test by the pressure control unit on the tank.
For the flow measurement module 5:
when the three test stations measure simultaneously, the isolation valve GLF23, the isolation valve GLF24, the isolation valve GLF25, the isolation valve GLF26, the isolation valve GLF27 and the isolation valve GLF28 are closed, the flow measurement module 5 comprises three mutually independent flow measurement units 12, and each flow measurement unit 12 can independently complete flow regulation. When the measured flow is small, opening an isolation valve GLF20, closing an isolation valve GLF21 and an isolation valve GLF22, measuring by using a flowmeter LLJ20, and adjusting the flow by using an adjusting valve TJF20 to complete flow measurement; when the measured flow exceeds the range of the flowmeter LLJ20 and the flow precision requirement is not high, opening an isolation valve GLF21, closing an isolation valve GLF20 and an isolation valve GLF22, measuring through the flowmeter LLJ21, adjusting the flow through an adjusting valve TJF21, and completing flow measurement; when the flow is larger than the range of the flowmeter LLJ21, closing the isolation valve GLF20, opening the isolation valve GFL21 and the isolation valve GLF22, connecting the flowmeter LLJ21 and the flowmeter LLJ22 in parallel, and sequentially adjusting the adjusting valve TJF21 and the adjusting valve TJF22 to complete flow measurement; when the flow accuracy requirement is high, basic flow adjustment is completed through the flow meter LLJ21 and the flow meter LLJ22, the isolation valve GFL20 is opened, the flow flowing through the flow meter LLJ20 is adjusted through the adjusting valve TJF20, and the total flow accuracy is guaranteed.
When only one path of flow needs to be measured, for example, only the flow of the pump hydraulic test station 8 needs to be measured, the isolation valve GLF13 and the isolation valve GLF14 are opened, the isolation valve GLF33, the isolation valve GLF34, the isolation valve GLF52 and the isolation valve GLF53 are closed, the parallel connection of the three flow measurement units 12 is completed through the opening and closing of the isolation valve GLF23, the isolation valve GLF24, the isolation valve GLF25, the isolation valve GLF26, the isolation valve GLF27 and the isolation valve GLF28, the parallel connection of the groups 13 in the flow measurement units 12 is controlled through the isolation valve GLF20, the isolation valve GLF21 and the isolation valve GLF22, and the flow regulation is completed through the regulating valve TJF20, the regulating valve TJF21 and the regulating valve TJF 22.
The on-off of the isolation valve GLF23, the isolation valve GLF24, the isolation valve GLF25, the isolation valve GLF26, the isolation valve GLF27 and the isolation valve GLF28 are controlled to realize independent measurement control of any two paths, the isolation valve GLF20, the isolation valve GLF21 and the isolation valve GLF22 in each flow measurement unit 12 are used for realizing the parallel connection of each flow measurement group 13 in each flow measurement unit 12, the flow regulation is completed through the regulating valve TJF20, the regulating valve TJF21 and the regulating valve TJF22, and the flow measurement is completed through the flowmeter LLJ20, the flowmeter LLJ21 and the flowmeter LLJ 22.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A liquid flow test system for an integrated rocket engine is characterized in that: the device comprises a basic supply module (1), a medium and low pressure supply module (2), a high pressure supply module (3), a gas supply module (4), a flow measurement module (5), a pressure measurement module (6), a water collection and return module (7), a pump hydraulic test station (8), a high pressure liquid flow test station (9), a medium and low pressure liquid flow test station (10) and a control system (11);
the basic supply module (1) is respectively connected with the medium-low pressure supply module (2), the high pressure supply module (3), the pump hydraulic test station (8), the gas supply module (4) and the water collecting and returning module (7);
the inlet end of the flow measurement module (5) is respectively connected with the pump hydraulic test station (8), the middle and low pressure supply module (2) and the high pressure supply module (3), and the outlet end of the flow measurement module is respectively connected with the high pressure liquid flow test station (9), the middle and low pressure liquid flow test station (10) and the water collection and return module (7);
the pressure measurement module (6) is respectively connected with a pump hydraulic test station (8), a high-pressure liquid flow test station (9) and a middle-low pressure liquid flow test station (10);
the control system (11) is respectively connected with the medium and low pressure supply module (2), the high pressure supply module (3), the gas supply module (4), the flow measuring module (5), the pressure measuring module (6), the pump hydraulic test station (8), the high pressure liquid flow test station (9) and the medium and low pressure liquid flow test station (10), and is used for controlling the working states of the medium and low pressure supply module (2), the high pressure supply module (3), the gas supply module (4), the pump hydraulic test station (8), the high pressure liquid flow test station (9) and the medium and low pressure liquid flow test station (10) according to test requirements, collecting test data of the flow measuring module (5), the pressure measuring module (6) and the pump hydraulic test station (8), and carrying out corresponding data analysis according to the collected test data.
2. A fluid testing system for an integrated rocket engine as recited in claim 1, wherein: the flow measurement module (5) comprises three flow measurement units (12), and an isolation valve is arranged between each flow measurement unit (12) to enable each flow measurement unit (12) to work independently;
the inlet ends of the three flow measurement units (12) are respectively connected with a water outlet of the pump hydraulic test station (8), a water outlet of the medium-low pressure supply module (2) and a water outlet of the high pressure supply module (3), and the outlet ends of the three flow measurement units (12) are respectively connected with a water collection and return module (7), a water inlet of the high pressure liquid flow test station (9) and a water inlet of the medium-low pressure liquid flow test station (10).
3. A fluid testing system for an integrated rocket engine as recited in claim 2, wherein:
the flow measuring unit (12) comprises at least two flow measuring groups (13) arranged in parallel;
the flow measurement group (13) comprises an isolation valve, a flowmeter and a regulating valve which are sequentially connected from an inlet end to an outlet end; the parallel main pipeline inlet of each flow measurement group (13) is respectively connected with the pump hydraulic test station (8), the middle and low pressure supply module (2) and the high pressure supply module (3), and the parallel main pipeline outlet is respectively connected with the water flow inlet of the water collection and return module (7), the high pressure liquid flow test station (9) and the middle and low pressure liquid flow test station (10);
in the flow measurement unit (12), the accuracy of the flow meters in one flow measurement group (13) is higher than the accuracy of the flow meters in the other flow measurement groups (13).
4. A fluid testing system for an integrated rocket engine as defined in claim 3, wherein:
the basic supply module (1) comprises a filling purification assembly (101), an open/closed low-pressure water tank (102), a supply main pipe (103), a preposed booster pump (104) and a vacuum pressure tank (105) which are connected in sequence;
the vacuum pressure tank (105) is respectively connected with the gas supply module (4), the high-pressure supply module (3) and the pump hydraulic test station (8);
an outlet of the supply main pipe (103) is connected with a medium-low pressure supply module (2), one path of an outlet end of the medium-low pressure supply module (2) is connected with an open/closed low-pressure water tank (102), and the other path of the outlet end of the medium-low pressure supply module is connected with a parallel main pipeline inlet of a flow measurement group (13) connected with the medium-low pressure supply module (2); a pressure reducing valve, an isolating valve and a one-way valve are sequentially connected between the outlet end of the middle and low pressure supply module (2) and the open/closed low pressure water tank (102);
the filling and purifying assembly (101) is respectively connected with a water source (106) and a water collecting and returning module (7).
5. The integrated rocket engine fluid flow testing system of claim 4 wherein:
the basic supply module (1) further comprises a sewage drainage assembly (107);
the sewage drainage assembly (107) is respectively connected with the open/closed low-pressure water tank (102), the supply main pipe (103) and the vacuum pressure tank (105).
6. The integrated rocket engine fluid flow testing system of claim 5 wherein:
the medium and low pressure supply module (2) comprises a plurality of groups of medium and low pressure supply units which are arranged in parallel, and each medium and low pressure supply unit comprises a centrifugal pump, a one-way valve and an isolation valve which are sequentially arranged from an inlet end to an outlet end.
7. The integrated rocket engine fluid flow testing system of claim 6 wherein:
the high-pressure supply module (3) comprises a plurality of groups of displacement pumps which are arranged in parallel, and a check valve and an overflow valve are sequentially arranged between the inlet and the outlet of each displacement pump in parallel;
the conducting direction of the one-way valve is the direction from the outlet to the inlet of the displacement pump.
8. The integrated rocket engine fluid flow testing system of claim 7 wherein:
the pump hydraulic test station (8) comprises a motor (801), a first gear box (802), a second gear box (803), a first torque meter group (804) and a second torque meter group (805);
the input end of the first gear box (802) and the input end of the second gear box (803) are respectively connected with output shafts at two ends of the motor (801), and the output end of the first gear box (802) and the output end of the second gear box (803) are respectively connected with the first torque meter group (804) and the second torque meter group (805);
the other ends of the first torque meter group (804) and the second torque meter group (805) are respectively provided with a first test pump position (806) and a second test pump position (807), and the first torque meter group (804) and the second torque meter group (805) have different testing accuracies;
the water inlets of the first test pump position (806) and the second test pump position (807) are respectively connected with the vacuum pressure tank (105) through a filter screen and an isolation valve in sequence, the water outlets are respectively connected with the inlets of the parallel main pipelines of the flow measurement group (13) through one-way valves, and the outlets of the parallel main pipelines of the flow measurement group (13) are connected with the water collecting and returning module (7).
9. A fluid testing system for an integrated rocket engine as recited in claim 8, wherein:
the pressure measurement module (6) comprises a plurality of groups of pressure measurement units;
the pressure measuring unit comprises an instrument valve, a quick connector and any one of a pressure gauge or a vacuum pressure gauge; the instrument valve is arranged between the quick connector and the pressure gauge or the vacuum pressure gauge;
the pressure gauge or the vacuum pressure gauge is connected to a water inlet pipeline and/or a water outlet pipeline of the pump hydraulic power testing station (8), the high-pressure liquid flow testing station (9) and the medium-low pressure liquid flow testing station (10) through quick connectors.
10. A fluid testing system for an integrated rocket engine as recited in claim 9, wherein: the control system (11) comprises a high-voltage and low-voltage electric and frequency conversion module, a switching module, a measurement and acquisition module, a data analysis module and a visualization module;
the high-low voltage electric and frequency conversion module is respectively connected with the basic supply module (1), the medium-low voltage supply module (2), the high-voltage supply module (3), the gas supply module (4), the water collection and return module (7) and the pump hydraulic test station (8) and is used for supplying power and adjusting output;
the switching module is respectively connected with the pump hydraulic test station (8), the high-pressure liquid flow test station (9) and the middle-low pressure liquid flow test station (10) and is used for controlling the working states of the pump hydraulic test station (8), the high-pressure liquid flow test station (9) and the middle-low pressure liquid flow test station (10);
the measurement acquisition module is respectively connected with the flow measurement module (5), the pressure measurement module (6) and the pump hydraulic test station (8) and is used for acquiring test data of the flow measurement module;
the data analysis module is connected with the measurement acquisition module and is used for carrying out data analysis processing on the test data acquired by the measurement acquisition module;
the visualization module is connected with the data analysis module and used for displaying the data analysis processing result of the data analysis module.
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