Lubricating system of nozzle stress application regulator test bed

Abstract

The utility model provides a lubricating system of a nozzle thrust augmentation regulator test bed. The lubricating system comprises a gearbox lubricating oil way and a thrust augmentation fuel pump lubricating oil way. The gearbox lubricating oil circuit comprises an outlet flow regulating valve DK18, a gear pump LP6, a radiator PR5, a filter FWP17, a gearbox gearbox, a filter FWP18, a gear pump LP7 and a gearbox lubricating limited oil return port which are sequentially connected through a pipeline; the thrust augmentation fuel pump lubricating oil circuit comprises a thrust augmentation fuel pump lubricating oil tank oil outlet, a gear pump LP9, a filter FWP19, a thrust augmentation fuel pump, a radiator PR6, a filter FWP20 and a gear pump LP10 which are sequentially connected through pipelines, and a thrust augmentation fuel pump lubricating oil tank oil return port passes through an outer circulation lubricating system provided with the gearbox and the thrust augmentation fuel pump; and the radiator is arranged on the oil return pipeline of the lubricating oil to reduce the temperature of the lubricating oil, so that the gearbox can be quickly cooled while the gearbox of the transmission is lubricated, and the gearbox can adapt to longer-time continuous work.

Description

Technical Field

[0001] The utility model relates to a lubrication system for a nozzle afterburner regulator test bench. Background Art

[0002] During the adjustment test of the nozzle afterburner regulator, a speed changer and a fuel pump are required to simulate the real working environment of the nozzle afterburner regulator. There is no special lubrication system for lubricating the fuel pump and the gearbox in the current test bench, which causes the accuracy of the fuel pump and the gearbox to decrease after long-term operation, affecting the test results of the adjustment test of the nozzle afterburner regulator.

[0003] For example, the performance test bench for an aircraft fuel pump / centrifugal pump disclosed in the patent with the publication number CN204610308U uses an inverter and a gearbox to achieve precise control of the fuel pump in the test bench for testing the fuel pump, and the gearbox uses a self-circulating lubricating oil system, enabling the gearbox to work for a long time. However, it does not set up a cooling system to cool the lubricating oil, resulting in a gradual increase in the internal temperature of the transmission and unable to conduct longer tests. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a lubrication system for a nozzle afterburner regulator test bench.

[0005] The utility model is achieved through the following technical solutions.

[0006] A lubrication system for a nozzle afterburner regulator test bench provided by the utility model includes a gearbox lubricating oil circuit and an afterburner fuel pump lubricating oil circuit;

[0007] The gearbox lubricating oil circuit includes an outlet of a gearbox lubricating oil tank connected in sequence through pipelines to an outlet flow regulating valve DK18, a gear pump LP6, a radiator PR5, a filter FWP17, a gearbox gearbox, a filter FWP18, a gear pump LP7, and a limited oil return port for gearbox lubrication;

[0008] The afterburner fuel pump lubricating oil circuit includes an oil outlet of an afterburner fuel pump lubricating oil tank, a gear pump LP9, a filter FWP19, an afterburner fuel pump, a radiator PR6, a filter FWP20, a gear pump LP10, and an oil return port of the afterburner fuel pump lubricating oil tank.

[0009] Temperature transmitters, pressure transmitters, and turbine flow sensors are installed on the lubricating oil inlet pipelines of the gearbox gearbox and the afterburner fuel pump.

[0010] Pressure regulating pipelines are respectively connected to the outlet pipelines of the gear pumps LP6 and LP9. The pressure regulating pipelines are respectively connected to the overflow valve and the outlet pressure regulating valve of the oil pump through branch pipelines. The outlets of the overflow valve and the outlet pressure regulating valve of the oil pump are connected to the gearbox lubricating oil tank.

[0011] Turbine flow sensors are installed at the outlets of the gear pumps LP7 and LP10.

[0012] Temperature transmitters are installed on the front and rear end bearings of the gearbox of the gearbox.

[0013] The cooling water inlets of the radiators PR5 and PR6 are respectively connected to the pneumatic valve DF40 through pipelines. The outlets of the radiators PR5 and PR6 are connected to the cooling water tank through the cooling water circuit pipe. The pneumatic valve DF40 is connected to the cooling water tank.

[0014] A heater EHoT2 and a temperature transmitter are installed in the lubricating oil tank of the afterburner fuel pump.

[0015] The beneficial effects of the present utility model are as follows: By respectively setting up the external circulation lubrication systems of the gearbox and the afterburner fuel pump, and installing radiators on the lubricating oil return pipelines to reduce the lubricating oil temperature, the gearbox of the gearbox can be lubricated while the gearbox can be quickly cooled down, so that it can adapt to continuous operation for a longer time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the lubrication system principle of the present utility model. DETAILED DESCRIPTION OF THE INVENTION

[0017] The technical solution of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0018] A lubrication system for a nozzle afterburner regulator test bench includes a gearbox lubricating oil circuit and an afterburner fuel pump lubricating oil circuit;

[0019] The gearbox lubricating oil circuit includes the outlet of the gearbox lubricating oil tank connected in sequence through pipelines to the outlet flow regulating valve DK18, the gear pump LP6, the radiator PR5, the filter FWP17, the gearbox of the gearbox, the filter FWP18, the gear pump LP7, and the limited return port of the gearbox lubrication;

[0020] The lubricating oil circuit of the afterburner fuel pump includes an oil outlet of the afterburner fuel pump lubricating oil tank, a gear pump LP9, a filter FWP19, an afterburner fuel pump, a radiator PR6, a filter FWP20, a gear pump LP10, and an oil return port of the afterburner fuel pump lubricating oil tank, which are connected in sequence through pipelines. After the lubricating oil passes through the filters of the radiators FR5 and FWP17, it enters the gearbox to lubricate and cool the gears and the front and rear end bearings of the output shaft; then the lubricating oil of the gearbox is pumped out by the lubricating oil pump LP7 and returned to the lubricating oil tank through the 20um FWP18 filter, forming a lubricating and cooling circulation system for the gearbox.

[0021] Temperature transmitters, pressure transmitters, and turbine flow sensors are installed on the lubricating oil inlet pipelines of the gearbox of the gearbox and the afterburner fuel pump. Temperature measurement sensors, flow measurement sensors, and pressure sensors are installed in the circulation system to monitor the operating state of the system, and the flow value of the lubricating oil in the pipeline, the inlet pressure value of the lubricating oil of the gearbox, and the temperature values of the front and rear ends of the lubricating oil and the gearbox bearings are obtained from the data collected by the measurement sensors. When the data collected by the lubricating system is abnormal, the gearbox automatically stops running.

[0022] Pressure regulating pipelines are respectively connected to the outlet pipelines of the gear pump LP6 and the gear pump LP9. The pressure regulating pipelines are respectively connected to the overflow valve and the outlet pressure regulating valve of the oil pump through branch pipelines, and the outlets of the overflow valve and the outlet pressure regulating valve of the oil pump are connected to the lubricating oil tank of the gearbox. As Figure 1 shown, for the method of regulating the lubricating oil flow input into the gearbox, a flow regulating valve DK19 is connected in parallel on the lubricating oil pipeline input into the gearbox to regulate the flow of the lubricating oil entering the gearbox. The safety overflow valve SRV7 acts as a safety valve in the lubricating oil system to protect the lubricating oil pipeline. When the system pressure exceeds the specified value, the safety valve opens, and a part of the lubricating oil in the system is discharged back to the oil tank, so that the system pressure does not exceed the allowable value, ensuring that the system does not have an accident due to excessive pressure.

[0023] As Figure 1 shown, in the lubricating oil circuit of the afterburner fuel pump, DK21 is a flow regulating valve used to regulate the flow of the lubricating oil input into the afterburner fuel pump. The safety overflow valve SRV8 plays a safety protection role in the lubricating oil system. When the system pressure exceeds the specified value, the safety valve automatically opens, and the lubricating oil in the system is directly discharged back to the oil tank, so that the system pressure does not exceed the allowable value, ensuring that the system does not have an accident due to excessive pressure.

[0024] Turbine flow sensors are installed at the outlets of the gear pumps LP7 and LP10. Two temperature measurement sensors T9 to T12 are installed at the front and rear bearings of the high-speed output shaft of the gearbox; when the temperature exceeds 80 °C, the test bench gives audible and visual alarm prompts; at the same time, the gearbox reduces the speed in a ramp manner to increase the flow rate of the lubricating oil and quickly cool down the gearbox.

[0025] Temperature transmitters are installed at the front and rear end bearings of the gearbox of the gearbox.

[0026] The cooling water inlets of the radiators PR5 and PR6 are connected to the pneumatic valve DF40 through pipes, the outlets of the radiators PR5 and PR6 are connected to the cooling water tank through the cooling water circuit pipe, and the pneumatic valve DF40 is connected to the cooling water tank.

[0027] A heater EHoT2 and a temperature transmitter are installed in the lubricating oil tank of the afterburner fuel pump.

Claims

1. A lubrication system for a nozzle booster regulator test bench, characterized in that: Including the gearbox lubricating oil circuit and the afterburner fuel pump lubricating oil circuit; The gearbox lubricating oil circuit includes an outlet of a gearbox lubricating oil tank connected in sequence through a pipeline, and in sequence to an outlet flow regulating valve DK18, a gear pump LP6, a radiator PR5, a filter FWP17, a gearbox gearbox, a filter FWP18, a gear pump LP7, and a gearbox lubricating limited oil return port; The booster fuel pump lubricating oil circuit includes a booster fuel pump lubricating oil tank oil outlet, a gear pump LP9, a filter FWP19, a booster fuel pump, a radiator PR6, a filter FWP20, a gear pump LP10, and a booster fuel pump lubricating oil tank oil return port which are sequentially connected through pipelines.

2. The lubrication system of the nozzle booster regulator test bench according to claim 1, characterized in that: The gear box of the gearbox and the lubricating oil inlet pipeline of the booster fuel pump are all equipped with a temperature transmitter, a pressure transmitter and a turbine flow sensor.

3. The lubrication system of the nozzle booster regulator test bench according to claim 1, characterized in that: The outlet pipes of the gear pump LP6 and the gear pump LP9 are respectively connected with pressure regulating pipes, which are respectively connected with the overflow valve and the oil pump outlet pressure regulating valve through branch pipes, and the outlets of the overflow valve and the oil pump outlet pressure regulating valve are connected with the gearbox lubricating oil tank.

4. The lubrication system of the nozzle booster regulator test bench according to claim 1, characterized in that: Turbine flow sensors are installed at the outlets of the gear pumps LP7 and LP10.

5. The lubrication system of the nozzle booster regulator test bench according to claim 1, characterized in that: The front and rear end bearings of the transmission gearbox are both equipped with temperature transmitters.

6. The lubrication system of the nozzle booster regulator test bench according to claim 1, characterized in that: The cooling water inlets of the radiator PR5 and the radiator PR6 are connected to the pneumatic valve DF40 through pipelines, and the outlets of the radiator PR5 and the radiator PR6 are connected to the cooling water tank through cooling water loop pipes, and the pneumatic valve DF40 is connected to the cooling water tank.

7. The lubrication system of the nozzle booster regulator test bench according to claim 1, characterized in that: The booster fuel pump lubricating oil tank is equipped with a heater EHoT2 and a temperature transmitter.

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