Adjusting test bench for nozzle stress application adjustor

Abstract

The utility model provides an adjustment test bench for a nozzle thrust augmentation regulator. The adjustment test bench comprises a fuel oil supply system, a fuel oil heating / cooling system, a filtering system, a thrust augmentation fuel oil pump, a tested product and a low-pressure oil return system which are connected in sequence, the low-pressure oil return system cools fuel oil through the fuel oil heating / cooling system and then returns the fuel oil to the fuel oil supply system. The tested product comprises a nozzle stress application regulator, an inlet and an outlet of the nozzle stress application regulator are respectively connected with the emergency oil drainage accessory and the fuel oil distributor, the nozzle stress application regulator is further connected with the air compression system, and the inlet and the outlet of the nozzle stress application regulator are further respectively provided with an oil pressure measuring module and a flow measuring module; the thrust augmentation fuel pump is further connected with the transmission system and the lubricating system. The test result data is more accurate by accurately controlling the oil temperature and the oil pressure of the inlet fuel oil of the nozzle stress application regulator.

Description

Technical Field

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

[0002] The nozzle pressure regulator adjusts the diameter of the tail nozzle to regulate the air pressure in the afterburner chamber. The nozzle afterburner regulator consists of a nozzle regulator and an afterburner regulator, which controls the change of the nozzle area and the regulation of the afterburner fuel system. There are many precision pairs in the nozzle afterburner regulator, so it needs to be tested and adjusted before use to accurately provide stable oil pressure. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides an adjusting test bench for a nozzle afterburner regulator.

[0004] The utility model is achieved through the following technical solutions.

[0005] An adjusting test bench for a nozzle afterburner regulator provided by the utility model includes a fuel supply system, a fuel heating / cooling system, a filtration system, an afterburner fuel pump, a product under test, and a low-pressure oil return system connected in sequence; the low-pressure oil return system returns the fuel to the fuel supply system after cooling it through the fuel heating / cooling system;

[0006] The product under test includes a nozzle afterburner regulator, the inlet and outlet of the nozzle afterburner regulator are respectively connected to an emergency oil drain accessory and a fuel distributor, the nozzle afterburner regulator is also connected to a pneumatic system, and oil pressure and flow measurement modules are respectively arranged at the inlet and outlet of the nozzle afterburner regulator;

[0007] The afterburner fuel pump is also connected to a transmission system and a lubrication system;

[0008] The fuel heating / cooling system is connected to a circulating water cooling system;

[0009] It further includes an electrical control system, a computer intelligent control system, and a power distribution system.

[0010] The fuel supply system includes a fuel tank, the oil outlet of the fuel tank is respectively connected to a number of low-pressure oil pumps, a number of medium-pressure oil pumps, and a number of high-pressure oil pumps, the outlets of the medium-pressure oil pumps and the high-pressure oil pumps are both connected to the filtration system, and the outlet of the low-pressure oil pump is connected to the filtration system after passing through the heating module in the fuel heating / cooling system.

[0011] The heating module is a heat-conducting oil heater.

[0012] A pressure and flow regulation module is also arranged between the filtration system and the afterburner fuel pump.

[0013] The air compression system includes an air pressure regulation module. The intake ends of the air pressure regulation module are respectively connected to a medium-pressure air source and a low-pressure air source. The outlet of the air pressure regulation module is connected to a nozzle pressure regulator via an air pressure measurement module.

[0014] The emergency fuel discharge accessory is also connected to a pressure and flow regulator.

[0015] The beneficial effects of the present utility model are as follows: By precisely controlling the oil temperature and the oil pressure of the fuel at the inlet of the nozzle afterburner regulator, the test result data is made more accurate. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the system principle of the present utility model;

[0017] Figure 2 is a schematic diagram of the fuel supply system principle of the present utility model. Detailed Embodiments

[0018] The technical solutions of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0019] A test bench for adjusting a nozzle afterburner regulator includes a fuel supply system, a fuel heating / cooling system, a filtration system, an afterburner fuel pump, a product under test, and a low-pressure return oil system connected in sequence. The low-pressure return oil system returns the fuel to the fuel supply system after cooling it through the fuel heating / cooling system.

[0020] The product under test includes a nozzle afterburner regulator. The inlet and outlet of the nozzle afterburner regulator are respectively connected to an emergency fuel discharge accessory and a fuel distributor. The nozzle afterburner regulator is also connected to an air compression system. Oil pressure and flow measurement modules are respectively provided at the inlet and outlet of the nozzle afterburner regulator.

[0021] The afterburner fuel pump is also connected to a transmission system and a lubrication system. The transmission system ensures the transmission power of various working states of the afterburner fuel pump (not less than 300 kW, and a power drive motor equivalent to or better than the user's same model can be selected), meets requirements such as torque, and reserves a certain margin; it has the function of switching the rotation direction of the main shaft clockwise and counterclockwise to meet the test requirements of afterburner fuel pumps with different rotation directions of the transmission shaft.

[0022] The transmission system is lubricated and cooled by a gearbox circulating lubrication system to ensure the long-term reliable operation of the transmission system. Gearbox lubricating oil: 8A aviation lubricating oil, pressure (0.1 - 0.2) MPa, flow rate (45 - 100) L / h, filtration accuracy 20 μm, oil temperature not exceeding 60 °C, temperature at the front and rear of the high-speed output shaft of the gearbox not exceeding 80 °C, and it has a power device for pumping the lubricating oil back to the lubricating oil tank. The afterburner fuel pump is lubricated by an afterburner fuel pump circulating lubrication system to ensure the long-term reliable operation of the afterburner fuel pump.

[0023] The fuel heating / cooling system is connected to the circulating water cooling system;

[0024] It also includes an electrical control system, a computer intelligent control system and a power distribution system.

[0025] The fuel supply system includes a fuel tank. The outlet of the fuel tank is respectively connected to a number of low-pressure oil pumps, a number of medium-pressure oil pumps and a number of high-pressure oil pumps. The outlets of the medium-pressure oil pumps and the high-pressure oil pumps are both connected to a filtration system. The outlet of the low-pressure oil pump is connected to the filtration system after passing through the heating module in the fuel heating / cooling system.

[0026] The fuel temperature control is achieved by heater control and the mixing of low-temperature oil and high-temperature oil to precisely control the fuel temperature. When the fuel temperature is higher than the set temperature, the heater stops heating the fuel, and a certain amount of cooling oil is injected into the high-temperature fuel pipeline to finely control the temperature of the high-temperature fuel; finally, the set temperature value of the fuel is reached.

[0027] The regulator inlet is divided into five sets of fuel supply systems:

[0028] Port H1: Oil pressure: (0.4 - 1.4) MPa, steplessly adjustable, maximum flow rate not less than 50000 L / h (equipped with a flow measurement device).

[0029] Port C1: Oil pressure: (0 - 22) MPa, steplessly adjustable, maximum flow rate not less than 5000 L / h (equipped with a flow measurement device).

[0030] Command oil supply system: Oil pressure: (0 - 3) MPa, divided into 6 outputs, each of which can be steplessly adjusted.

[0031] Port C14: Oil pressure: (0 - 10) MPa, steplessly adjustable, maximum flow rate not less than 1000 L / h.

[0032] Ports H4 and H5: Oil pressure: (0 - 10) MPa, steplessly adjustable, maximum flow rate of port H4 not less than 10000 L / h, and that of port H5 not less than 1000 L / h.

[0033] For safety, to prevent the fuel from deteriorating under high-temperature conditions, the fuel tank adopts a closed heat-insulated fuel tank with a volume of not less than 1 m 3 .

[0034] The heating module is a heat-conducting oil heater.

[0035] The heating method of the nozzle afterburner regulator adjustment test bench for fuel is an indirect heating method using heat-conducting oil. The principle of the heat-conducting oil heater is as follows: The heat-conducting oil furnace directly inserts the electric heater into the organic carrier (heat-conducting oil) for direct heating, and then transports the heated heat-conducting oil medium to the high-temperature heat-conducting oil inlet of the heat-conducting oil and fuel heat exchanger through a high-temperature oil pump. After passing through the heat exchanger, the heat-conducting oil returns from the heat exchange outlet to the heat-conducting oil electric heater for heating, and then the heat-conducting oil is output through the high-temperature oil pump; thus forming a complete circulating heating system.

[0036] There are the following advantages in using heat-conducting oil for heating:

[0037] ① Heat-conducting oil heating does not require physical contact between the heating electrode and the heated medium, and is commonly used for heating flammable and explosive media. It is a safe heating method, featuring low pressure, high temperature, and safety. ② The heat source of the heat-conducting oil furnace is stable; the heat-conducting oil furnace can output hot oil with a maximum temperature of 320°C under normal pressure; ③ The heating system of the heat-conducting oil furnace applies PID self-tuning intelligent temperature control technology, with a control accuracy of up to ±1°C, enabling easy regulation of the heating temperature. It has no interference with the power supply network and can prevent dry burning.

[0038] A temperature measuring sensor must be installed on the heater pipe wall. When the temperature of the electric heater is in an abnormal state, the control system issues an alarm signal and cuts off the power supply of the heater.

[0039] The electric heater and the pipeline are sealed with high-temperature and oil-resistant rubber rings.

[0040] Ball valves and pressure measuring joints (M14X1) are installed at the inlet / outlet of the radiator oil pipeline for regular pressure testing of the test bench.

[0041] A pressure and flow rate adjustment module is also provided between the filtration system and the afterburner fuel pump.

[0042] The air pressure system includes an air pressure adjustment module. The inlet end of the air pressure adjustment module is respectively connected to the medium-pressure air source and the low-pressure air source, and the outlet of the air pressure adjustment module is connected to the nozzle pressure regulator after passing through the air pressure measurement module.

[0043] Low-pressure air system:

[0044] The low-pressure air used in the test bench is dry compressed air with a pressure of (0.4 - 0.6) MPa. The low-pressure air system is equipped with an air triple unit and an air dryer to provide high-quality low-pressure air for the product and pneumatic actuators. The air inlet of the product requires an air pressure of ±20 kPa. To facilitate adjustment of the product inlet pressure value, it is required that the air pressure adjustment can accurately control the air pressure change below 5 kPa.

[0045] Medium-pressure air system:

[0046] The medium-pressure air flow required for the air inlet of the product is large (4.5 MPa, Q = 15 m3 / min). The emergency oil drain accessory is also connected to the pressure flow regulation.

Claims

1. A nozzle booster regulator adjustment test bench, characterized in that: It includes a fuel supply system, a fuel heating / cooling system, a filtering system, a booster fuel pump, a product under test, and a low-pressure oil return system connected in sequence; the low-pressure oil return system returns the fuel to the fuel supply system after cooling the fuel through the fuel heating / cooling system; The product under test includes a nozzle booster regulator, the inlet and outlet of which are respectively connected to the emergency fuel release accessory and the fuel distributor, the nozzle booster regulator is also connected to the air compressor system, and the inlet and outlet of which are respectively provided with oil pressure and flow measurement modules; The boost fuel pump is also connected to the transmission system and the lubrication system; The fuel heating / cooling system is connected to the circulating water cooling system; It also includes electrical control systems, computer intelligent control systems and power distribution systems.

2. The nozzle booster regulator adjustment test bench according to claim 1, characterized in that: The fuel supply system includes a fuel tank, the oil outlet of the fuel tank is respectively connected to a plurality of low-pressure oil pumps, a plurality of medium-pressure oil pumps, and a plurality of high-pressure oil pumps, the outlets of the medium-pressure oil pump and the high-pressure oil pump are both connected to the filtering system, and the outlet of the low-pressure oil pump is connected to the filtering system after passing through a heating module in the fuel heating / cooling system.

3. The nozzle booster regulator adjustment test bench according to claim 2, characterized in that: The heating module is a thermal oil heater.

4. The nozzle booster regulator adjustment test bench according to claim 1, characterized in that: A pressure flow regulating module is also provided between the filtering system and the boost fuel pump.

5. The nozzle booster regulator adjustment test bench according to claim 1, characterized in that: The air compression system comprises an air pressure regulating module, the air inlet of the air pressure regulating module is respectively connected to a medium-pressure air source and a low-pressure air source, and the outlet of the air pressure regulating module is connected to a nozzle pressure regulator after passing through an air pressure measuring module.

6. The nozzle booster regulator adjustment test bench according to claim 1, characterized in that: The emergency oil release accessory is also connected to a pressure flow regulator.

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