An adjustable mounting device and method for a semi-physical test of engine thermal management

Abstract

This application belongs to the field of semi-physical tests for thermal management of the fuel system of aero gas turbine engines, and particularly relates to an adjustable installation device and method for semi-physical tests of engine thermal management; the test device is a fuel supply circuit formed by a fuel supply pipeline in series with a fuel supply tank, a water-cooled radiator, a centrifugal pump, a fuel filter, a gear pump, an adjustment device, a fuel and lubricating oil radiator, a nozzle, and the fuel supply tank in sequence; an actuator is connected in parallel between the centrifugal pump and the gear pump; a fuel temperature detection device for detecting the oil temperature at the outlet is installed at the outlet of the water-cooled radiator, and the size of the water valve of the water-cooled radiator is controlled according to the oil temperature detected by the fuel temperature detection device so that the oil temperature at the outlet of the water-cooled radiator remains at a preset value; this application does not require a fuel electric heating device, is arranged according to the actual installation position, uses a return fuel tank to simulate the engine combustion chamber, and uses a controller to simulate the engine flow control signal to meet the requirements of engine thermal management parameters.

Description

Technical Field

[0001] This application belongs to the field of semi-physical tests for thermal management of the fuel system of an aero gas turbine engine, and particularly relates to an adjustable installation device and method for semi-physical tests of engine thermal management. Background Art

[0002] The semi-physical test for thermal management of the fuel system of a gas turbine engine is one of the important verification activities in the engine design process. By simulating the engine state, when the fuel temperature at the engine inlet is increased, the changes in the pressure, temperature, and internal return oil flow parameters of the fuel inside the fuel system are obtained to support the subsequent full-engine tests.

[0003] A typical adjustable installation device for semi-physical tests of engine thermal management is that the fuel in the fuel tank is heated to the test temperature by a fuel heating device and then enters the fuel system. After passing through the pump, pipeline, regulator, fuel-oil cooler, nozzle, etc. of the fuel system, it finally flows out of the fuel system. The high-temperature fuel flowing out of the fuel system is cooled by a water-cooled heat exchanger and then returned to the fuel tank for recycling. Among them, the fuel heating device is used to heat the fuel, the motor is used to simulate the rotational speed of the fuel system pump, and the regulating device is used to simulate the engine fuel flow. To ensure test safety, the electric heater of the fuel heating device does not directly heat the fuel, but indirectly heats the fuel at the inlet of the test piece through heat-conducting oil and a heat exchanger. Usually, the fuel heating device is a relatively complex and somewhat dangerous system.

[0004] The fuel accessories such as the centrifugal pump, gear pump, and regulating device of the existing adjustable installation device for semi-physical tests of engine thermal management are the same as those of the engine, and the front-back connection sequence is also the same. However, the relative positions of the components are quite different from the actual installation positions on the engine. The connecting pipelines between the components need to be designed separately. Usually, the pipelines are longer than the actual pipelines on the engine, and the heat dissipation of the pipelines to the outside is also relatively large, resulting in a certain error between the temperature test results of the semi-physical test and the temperature test results of the full-engine test of the engine. With the continuous improvement of the accuracy requirements for engine thermal management tests, the existing semi-physical test devices can no longer meet the test requirements.

[0005] The existing adjustable installation device for semi-physical tests of engine thermal management has the following defects and deficiencies:

[0006] 1. Without considering the actual installation positions of fuel accessories such as centrifugal pumps, gear pumps, and regulating devices on the engine, the connecting pipelines are quite different from the actual pipelines of the engine, resulting in test errors in temperature and pressure.

[0007] 2. Solve the problems of the complex structure and safety risks of the fuel heating device. Summary of the Invention

[0008] To solve the above problems, the present application provides an adjustable mounting device for an engine thermal management semi-physical test. The test device is an oil supply circuit formed by an oil supply pipeline in series with an oil supply tank, a water-cooled radiator, a centrifugal pump, a fuel filter, a gear pump, an adjustment device, a fuel and lubricating oil radiator, a nozzle, and the oil supply tank in sequence; an actuating device is connected in parallel between the centrifugal pump and the gear pump; the centrifugal pump and the gear pump are connected to the same engine casing for providing different speeds, and the engine casing is driven by an electric motor;

[0009] Wherein, a fuel temperature detection device for detecting the oil temperature at the outlet is installed at the outlet of the water-cooled radiator, and the size of the water valve of the water-cooled radiator is controlled according to the oil temperature detected by the fuel temperature detection device so that the oil temperature at the outlet of the water-cooled radiator remains at a preset value;

[0010] The test device is installed on a test bench.

[0011] The technical effect of the above technical features is that the traditional method of heating the fuel is removed, avoiding the danger of directly heating the fuel. The present application simulates the speed of a real engine through the engine casing, so that the fuel naturally heats up in the test device, and a negative feedback temperature regulation system is formed by the water-cooled radiator and the temperature detection device, enabling the test device to maintain the preset test temperature and more realistically simulate the working conditions of a real engine.

[0012] Preferably, the test bench includes a main beam and an auxiliary beam that are parallel to each other. Multiple main support rods are installed on the main beam, and there are multiple axially distributed pin holes on the main beam. The main support rods are axially positioned on the main beam by connecting with the pin holes through pins; at least one auxiliary support rod is hinged to each main support rod, and the auxiliary support rod is sleeved with the auxiliary beam;

[0013] Wherein the length of the auxiliary support rod is adjustable for adjusting the angular position of the main support rod; the length of the main support rod is adjustable for adjusting the height of the top end of the main support rod;

[0014] The end of the main support rod has a mounting plate for mounting the components in the test device.

[0015] The technical effect of the above technical features is that the main support rod can move axially on the main beam and rotate around the main beam, and is fixed by the auxiliary support rods installed on the auxiliary beam, forming adjustable positions in multiple spatial positions, enabling the test device mounted on the main support rod to be adjustable.

[0016] Preferably, the auxiliary beam includes a first auxiliary beam and a second auxiliary beam, and the first auxiliary beam and the second auxiliary beam are arranged on both sides of the main beam.

[0017] Preferably, the main support rod and the mounting plate are connected by bolts.

[0018] Preferably, the main support rod includes a fixed cylinder and a telescopic shaft sleeved inside the fixed cylinder.

[0019] Preferably, the centrifugal pump, fuel filter, gear pump, regulating device, fuel and lubricating oil radiator, actuating device, nozzle, and engine attachment housing are respectively detachably mounted on the telescopic mounting plate.

[0020] Preferably, the positions of the centrifugal pump, fuel filter, gear pump, regulating device, fuel and lubricating oil radiator, actuating device, nozzle, and engine attachment housing are the same as their positions on an actual engine.

[0021] An engine thermal management hardware-in-the-loop test method uses the above-described adjustable mounting device for engine thermal management hardware-in-the-loop tests; the method includes:

[0022] Close the water valve, adjust the motor speed to be consistent with the actual engine speed, circulate and heat up the fuel in the test device, and raise the fuel temperature to a first preset temperature.

[0023] Open the water valve, and automatically or manually control the size of the water valve according to the oil temperature detected by the fuel temperature detection device to keep the fuel temperature at a second preset value.

[0024] The advantages of the present application include: The present application can, without engine components such as a compressor, combustion chamber, and turbine, and without a fuel electric heating device, fix structures such as fuel system pumps, pipes, valves, and regulators on the support rod, arrange them according to the actual installation positions, use a return fuel tank to simulate the engine combustion chamber, and use a controller to simulate engine flow control signals, so as to meet the requirements of engine thermal management parameters;

[0025] The test bench of the present application can achieve adjustments in multiple directions including the axial, circumferential, and radial directions, and can adjust the positions of various components to adapt to tests of various engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic connection diagram of the test device according to a preferred embodiment of the present application;

[0027] Figure 2 is a connection diagram of the test device and the test bench according to a preferred embodiment of the present application;

[0028] Figure 3 is a schematic installation diagram of the fuel and lubricating oil radiator according to a preferred embodiment of the present application;

[0029] Figure 4 is a schematic connection diagram of the oil supply pipelines of the various components of the test device according to a preferred embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the present application more clear, the following will describe the technical solutions in the embodiments of the present application in more detail with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. The following will explain the embodiments of the present application in detail with reference to the accompanying drawings.

[0031] The present invention provides a semi-physical test method and device for engine thermal management considering the actual installation position. In response to the requirement of simulating the actual working state of the engine in the fuel system thermal management test of the engine, each component of the fuel system is arranged on the main beam according to the actual installation position, an electric motor is used to simulate the actual speed of the engine, a centrifugal pump, a gear pump and other fuel system accessories are driven through a transmission device, and a controller is used to simulate the fuel flow signal of the engine to meet the control requirements of parameters such as fuel pressure, temperature, and flow rate.

[0032] As Figure 1 shown, the present application provides an adjustable installation device for engine thermal management semi-physical tests. The test device is a fuel supply circuit formed by a fuel supply pipeline in series with a fuel supply tank, a water-cooled radiator, a centrifugal pump, a fuel filter, a gear pump, an adjustment device, a fuel and lubricating oil radiator, a nozzle, and the fuel supply tank in sequence; an actuating device is connected in parallel between the centrifugal pump and the gear pump; the centrifugal pump and the gear pump are connected to the same engine accessory housing for providing different speeds, and the engine accessory housing is driven by an electric motor; wherein, a fuel temperature detection device for detecting the oil temperature at the outlet is installed at the outlet of the water-cooled radiator, and the size of the water valve of the water-cooled radiator is controlled according to the oil temperature detected by the fuel temperature detection device so that the oil temperature at the outlet of the water-cooled radiator remains at a preset value; the test device is installed on a test bench.

[0033] The technical effect of the above technical features is that the traditional method of heating the fuel is removed, avoiding the danger of directly heating the fuel. The present application simulates the speed of the actual engine through the engine accessory housing, so that the fuel naturally heats up in the test device, and a negative feedback temperature regulation system is formed by the water-cooled radiator and the temperature detection device to keep the test device at the preset test temperature, more realistically simulating the working conditions of the actual engine;

[0034] Using the above-described adjustable installation device for engine thermal management semi-physical tests to perform the engine thermal management semi-physical test method, the method includes:

[0035] Close the water valve, adjust the motor speed to be consistent with the actual engine speed, and the fuel circulates and heats up in the test device until the fuel temperature rises to the first preset temperature;

[0036] Open the water valve, and automatically or manually control the size of the water valve according to the oil temperature detected by the fuel temperature detection device to keep the fuel temperature at the second preset value.

[0037] The following will be described in conjunction with the attached Figure 2 and Figure 3 as follows, as Figure 2 Figure 3 shown

[0038] The test bench includes a main beam 1 and an auxiliary beam 2 that are parallel to each other. A plurality of main support rods 3 are installed on the main beam 1. There are a plurality of axially distributed pin holes on the main beam 1. The main support rods 3 are axially positioned on the main beam 1 by connecting with the pin holes through pins; at least one auxiliary support rod 4 is hinged to each main support rod 3, and the auxiliary support rod 4 is sleeved with the auxiliary beam 2;

[0039] Among them, the length of the auxiliary support rod 4 is adjustable for adjusting the angular position of the main support rod 3; the length of the main support rod 3 is adjustable for adjusting the height of the top end of the main support rod 3;

[0040] The end of the main support rod 3 has a mounting plate for mounting various components in the test device. The auxiliary beam 2 includes a first auxiliary beam and a second auxiliary beam, and the first auxiliary beam and the second auxiliary beam are arranged on both sides of the main beam 1; the main support rod 3 and the mounting plate are connected by bolts. The main support rod 3 includes a fixed cylinder and a telescopic shaft sleeved in the fixed cylinder. The fuel supply tank, the water-cooled radiator, the centrifugal pump 5, the fuel filter 6, the gear pump 7, the regulating device 8, the fuel and lubricating oil radiator 9, the nozzle 10, the actuating device 14, and the engine attachment housing 15 are respectively detachably mounted on the telescopic mounting plate; the positions of the centrifugal pump 5, the fuel filter 6, the gear pump 7, the regulating device 8, the fuel and lubricating oil radiator 9, the nozzle 10, the actuating device 14, and the engine attachment housing 15 are the same as their positions on the real engine. The technical effect of the above technical features is that the main support rod 3 can move axially on the main beam 1 and rotate around the main beam 1, and is fixed by the auxiliary support rod 4 mounted on the auxiliary beam 2, forming adjustable positions in multiple spatial positions, and enabling the test device mounted on the main support rod 3 to be adjustable.

[0041] Such as Figure 4As shown in the figure, the main support rod is connected to the main beam through a sleeve. There are a series of pin holes on the main beam. Through the pins and the pin holes, the axial position of the support rod can be fixed. The main support rod can expand and contract radially. After expanding and contracting to a fixed length, it is fixed by a buckle. The main support rod rotates axially to an appropriate circumferential angle and is fixed by an auxiliary support rod. The auxiliary support rod is also a telescopic rod like the main support rod and can freely adjust its length. The fuel accessory is fixed on the mounting plate, which can be welded, bolted, riveted or any other means that can ensure reliable connection between the two. The mounting plate is bolted to the main support rod for easy disassembly.

[0042] During the thermal management semi-physical test, the fuel accessory is connected by a steel fuel pipeline. The schematic diagram of the pipeline connection is shown in Figure 4 . For the fuel supply pipeline 11 between the fuel accessories, its structural dimensions are the same as those of the actual fuel pipeline of the engine. The inlet 12 of the centrifugal pump, and the fuel in the fuel tank enters the centrifugal pump after passing through the water-cooled radiator. The outlet of the nozzle, and the fuel flows out through the nozzle 13 and returns to the fuel tank. The fuel nozzle to the fuel supply tank, the fuel supply tank to the water-cooled radiator, and the water-cooled radiator to the centrifugal pump are connected by steel fuel supply pipelines. The structure of the fuel supply pipeline can be adaptively designed according to the layout of the test bench.

[0043] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claimed rights.

Claims

1. An adjustable mounting device for an engine thermal management semi-physical test, characterized in that, The test device is a fuel supply circuit formed by a fuel supply pipeline sequentially connecting a fuel supply tank, a water-cooled radiator, a centrifugal pump, a fuel filter, a gear pump, an adjusting device, a fuel and lubricating oil radiator, a nozzle, and the fuel supply tank; an actuating device is connected in parallel between the centrifugal pump and the gear pump; the centrifugal pump and the gear pump are connected to the same engine attachment case for providing different rotation speeds, and the engine attachment case is driven by an electric motor; Wherein, a fuel temperature detection device for detecting the oil temperature at the outlet is installed at the outlet of the water-cooled radiator, and the size of the water valve of the water-cooled radiator is controlled according to the detected oil temperature by the fuel temperature detection device so that the oil temperature at the outlet of the water-cooled radiator remains at a preset value; The test device is installed on a test bench; the test bench includes a main beam and an auxiliary beam that are parallel to each other. The main beam is provided with a plurality of main support rods. The main beam has a plurality of pin holes axially distributed. The main support rods are axially positioned on the main beam by connecting with the pin holes through pins; at least one auxiliary support rod is hinged to each main support rod, and the auxiliary support rod is sleeved with the auxiliary beam; Wherein the length of the auxiliary support rod is adjustable for adjusting the angular position of the main support rod; the length of the main support rod is adjustable for adjusting the height of the top end of the main support rod; The end of the main support rod is provided with a mounting plate, and the mounting plate is used for mounting each component in the test device.

2. The adjustable mounting device for the engine thermal management semi-physical test according to claim 1, characterized in that The auxiliary beam includes a first auxiliary beam and a second auxiliary beam, and the first auxiliary beam and the second auxiliary beam are arranged on both sides of the main beam.

3. The adjustable mounting device for the engine thermal management semi-physical test according to claim 1, wherein, The main support rod and the mounting plate are connected by bolts.

4. The adjustable mounting device for the engine thermal management semi-physical test according to claim 1, characterized in that The main support rod includes a fixed cylinder and a telescopic shaft sleeved in the fixed cylinder.

5. The adjustable mounting device for the engine thermal management semi-physical test according to claim 1, characterized in that, The centrifugal pump, the fuel filter, the gear pump, the adjusting device, the fuel and lubricating oil radiator, the actuating device, the nozzle, and the engine attachment case are respectively detachably installed on the telescopic mounting plate.

6. The adjustable mounting device for the engine thermal management semi-physical test according to claim 5, characterized in that, The positions of the centrifugal pump, the fuel filter, the gear pump, the adjusting device, the fuel and lubricating oil radiator, the actuating device, the nozzle, and the engine attachment case are the same as their positions on a real engine.

7. An engine thermal management semi-physical test method, using the adjustable installation device for engine thermal management semi-physical test according to any one of claims 1 to 6; the method includes: Closing the water valve, adjusting the motor speed to be consistent with the actual engine speed, circulating and heating the fuel in the test device until the fuel temperature rises to a first preset temperature; Opening the water valve, automatically or manually controlling the size of the water valve according to the oil temperature detected by the fuel temperature detection device so that the fuel temperature remains at a second preset value.

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