阅读说明：本技术 一种主减速器双重滑油冷却系统及方法 (Dual lubricating oil cooling system and method for main speed reducer ) 是由 陈洪喜 阳开华 万晓文 程功 杨阿饶 孙慧莹 商燕 吕泽辉 辛景雷 刘承宗 于 2020-04-30 设计创作，主要内容包括：本申请提供一种主减速器双重滑油冷却系统,所述系统包括第一节流阀1、第二节流阀10、第一冷却器2、第二冷却器6、第一温度传感器5、第二温度传感器7、电机泵组8、电动调节阀9,其中：第一节流阀1设置在冷却水出水管路上,第二节流阀10设置在冷却水进水管路上,第一节流阀1和第二节流阀10分别与第一冷却器2的出水口和进水口连接,第一冷却器2的冷却液进口与第二冷却器6的冷却液出口连接,第二冷却器6的冷却液进口与电机泵组8的泵出口连接,电机泵组8的泵进口与电动调节阀9的第一接口连接,电动调节阀9的第二接口与第一冷却器2的冷却液出口连接,电动调节阀9的第三接口与第一冷却器2的冷却液进口连接。(The application provides a dual lubricating oil cooling system of main reducer, the system includes first choke valve 1, second choke valve 10, first cooler 2, second cooler 6, first temperature sensor 5, second temperature sensor 7, motor-pump package 8, electrical control valve 9, wherein: first choke valve 1 sets up on cooling water outlet pipeline, second choke valve 10 sets up on cooling water inlet pipeline, first choke valve 1 and second choke valve 10 are connected with the delivery port and the water inlet of first cooler 2 respectively, the coolant liquid import of first cooler 2 and the coolant liquid exit linkage of second cooler 6, the coolant liquid import of second cooler 6 and the pump outlet of motor pump group 8 are connected, the pump import of motor pump group 8 and the first interface connection of electrical control valve 9, the second interface of electrical control valve 9 and the coolant liquid exit linkage of first cooler 2, the third interface of electrical control valve 9 and the coolant liquid inlet connection of first cooler 2.)

1. The main reducer dual-lubricating oil cooling system is characterized by comprising a first throttle valve (1), a second throttle valve (10), a first cooler (2), a second cooler (6), a first temperature sensor (5), a second temperature sensor (7), a motor-pump set (8) and an electric regulating valve (9), wherein:

the cooling system comprises a first throttling valve (1), a second throttling valve (10), a first cooler (2), a second cooler (6), a motor pump set (8), an electric control valve (9), a second interface of the electric control valve (9), a third interface of the electric control valve (9) and a cooling liquid inlet of the first cooler (2), wherein the first throttling valve (1) is arranged on a cooling water outlet pipeline, the second throttling valve (10) is arranged on a cooling water inlet pipeline, the first throttling valve (1) and the second throttling valve (10) are respectively connected with a water outlet and a water inlet of the first cooler (2), a cooling liquid inlet of the first cooler (2) is connected with a cooling liquid outlet of the second cooler (6), a cooling liquid inlet of the second cooler (6) is connected with a pump outlet of the motor pump set (8), a pump inlet of the motor pump set (8) is connected with a first; the first temperature sensor (5) is arranged on a pipeline connected with the first cooler (2) and the second cooler (6); the second temperature sensor (7) is arranged on a pipeline connecting the second cooler (6) and the motor-pump set (8).

2. A system according to claim 1, characterized in that the system further comprises a relief valve (3), which relief valve (3) is arranged on the line connecting the first cooler (2) and the second cooler (6).

3. The system according to claim 1, characterized in that the system further comprises a pressure gauge (4), the pressure gauge (4) being arranged on a line connecting the first cooler (2) and the second cooler (6).

4. A system according to claim 1, characterised in that the second cooler (6) is arranged on the main retarder oil line.

5. The system according to claim 1, characterized in that the lines to which the first cooler (2), the second cooler (6), the motor-pump group (8) and the electric regulating valve (9) are connected are coolant lines.

6. A system according to claim 1, characterised in that the line to which the first throttle (1), the second throttle (10) and the first cooler (2) are connected is a cooling water line.

7. The system of claim 1, wherein the cooling fluid has a boiling point in excess of 120 ℃.

8. A method of dual lube cooling for a final drive, the method comprising:

cooling the cooling liquid by using cooling water;

and cooling the main speed reducer lubricating oil by using cooling liquid, wherein the boiling point of the cooling liquid is over 120 ℃.

Technical Field

The invention relates to a lubricating oil cooling system, in particular to a dual lubricating oil cooling system for a main reducer test, which is applied to a test bed of a certain helicopter main reducer.

Background

The main reducer test bed is a test device for checking and verifying the performance of a main reducer of a helicopter. During the test, the lubricating oil of the main reducer needs to be cooled, and the specified temperature state during the test of the main reducer is met. Therefore, a set of independent main reducer lubricating oil cooling system is arranged on the test bed to regulate the temperature of the main reducer lubricating oil, and the test requirements are met. However, under specific test conditions, the temperature of the main reducer lubricating oil exceeds 100 ℃, and if the lubricating oil is simply cooled by using cooling water, the cooling water boils and evaporates, so that the cooling requirement cannot be met.

Disclosure of Invention

The application provides a dual lubricating oil cooling system is used in final drive unit test uses the coolant liquid that the boiling point surpassed 120 ℃ to cool off the final drive unit lubricating oil, prevents when the lubricating oil temperature is too high, the boiling evaporation phenomenon of coolant liquid appears, and the rethread cooling water cools off the coolant liquid to through monitoring the temperature, realize the accurate control of temperature, the lubricating oil temperature when guaranteeing the helicopter final drive unit test ensures experimental reliability and work efficiency.

In a first aspect, the present application provides a dual oil cooling system for a main reducer, the system includes a first throttle valve 1, a second throttle valve 10, a first cooler 2, a second cooler 6, a first temperature sensor 5, a second temperature sensor 7, a motor-pump set 8, and an electric control valve 9, wherein:

the cooling system comprises a first throttling valve 1, a second throttling valve 10, a motor pump group 8, a first interface of an electric control valve 9, a second interface of the electric control valve 9, a third interface of the electric control valve 9, a cooling liquid inlet of the first cooler 2, a cooling liquid outlet of the second cooler 2, a first cooling water inlet of the first cooler 2, a second cooling water inlet of the second cooler 6, a cooling liquid outlet of the second cooler 10, a cooling liquid outlet of the first cooler 2, a cooling liquid inlet of the second cooler 2, a cooling liquid inlet of the motor pump group 8, a cooling liquid inlet of the motor pump group 9, a second interface of the electric control valve 9, and a cooling liquid inlet; the first temperature sensor 5 is arranged on a pipeline connecting the first cooler 2 with the second cooler 6; a second temperature sensor 7 is arranged on the line connecting the second cooler 6 with the motor-pump group 8.

Preferably, the system further comprises a relief valve 3, and the relief valve 3 is arranged on a pipeline connecting the first cooler 2 and the second cooler 6.

Preferably, the system further comprises a pressure gauge 4, and the pressure gauge 4 is arranged on a pipeline connecting the first cooler 2 and the second cooler 6.

Preferably, the second cooler 6 is arranged on the main reducer oil line.

Preferably, the pipelines connected with the first cooler 2, the second cooler 6, the motor-pump set 8 and the electric regulating valve 9 are cooling liquid pipelines.

Preferably, the pipeline connecting the first throttle 1, the second throttle 10 and the first cooler 2 is a cooling water pipeline.

Preferably, the boiling point of the cooling liquid is above 120 ℃.

In a second aspect, the present application provides a dual oil cooling method for a final drive, the method comprising:

cooling the cooling liquid by using cooling water;

and cooling the main speed reducer lubricating oil by using cooling liquid, wherein the boiling point of the cooling liquid is over 120 ℃.

In summary, the present invention aims to provide a dual lubricating oil cooling system for a main reducer test, which uses a cooling liquid with a boiling point exceeding 120 ℃ to cool the main reducer lubricating oil, so as to prevent the cooling liquid from boiling and evaporating when the lubricating oil temperature is too high, and then cools the cooling liquid by cooling water, and by monitoring the temperature, realize accurate temperature control, ensure the lubricating oil temperature during the helicopter main reducer test, and ensure the reliability and the working efficiency of the test.

Drawings

FIG. 1 is a schematic view of a dual oil cooling system for a final drive test;

wherein: 1-a first throttle valve; 2-a first cooler, 3-an overflow valve, 4-a pressure gauge, 5-a first temperature sensor, 6-a second cooler, 7-a second temperature sensor, 8-a motor-pump set, 9-an electric regulating valve and 10-a second throttle valve.

Detailed Description

The technical scheme includes that the dual-lubricating-oil cooling system for the main reducer test comprises a first throttling valve 1, a first cooler 2, an overflow valve 3, a pressure gauge 4, a first temperature sensor 5, a second cooler 6, a second temperature sensor 7, a motor pump set 8, an electric regulating valve 9 and a second throttling valve 10. The coolant flows out through the motor pump unit 8, passes through the second cooler 6, cools the lubricating oil flowing through the second cooler 6, passes through the first cooler 2, is cooled by the cooling water, and then enters the motor pump unit 8 through the electric regulating valve 9. The first throttling valve 1 and the second throttling valve 10 are respectively arranged on a cooling water outlet pipeline and a cooling water inlet pipeline, the overflow valve 3 is used for preventing the pressure in the system from being too high, and the pressure gauge 4, the first temperature sensor 5 and the second temperature sensor 7 are used for measuring the pressure and the temperature of the cooling water in the system.

In the use process of the invention, when the system is powered on, the motor pump set 8 operates, cooling liquid in the system starts to circulate, when an operator sets a required oil inlet temperature T of the main speed reducer, when the temperature T is less than the temperature of the second temperature sensor 7, the electric regulating valve 9 automatically regulates the opening degree to ensure that the cooling liquid does not flow through the cooler 2 but flows through the bypass, when the temperature T is greater than or equal to the temperature of the second temperature sensor 7, the electric regulating valve 9 automatically regulates the opening degree according to the temperature T and the temperature difference between the first temperature sensor 5 and the second temperature sensor 7 to distribute the flow rate of the cooling liquid flowing through the cooler 2 and the bypass, and then the cooled cooling liquid flows through the second cooler 6 to cool the lubricating oil flowing through the second cooler 6. Therefore, the temperature of the lubricating oil can be adjusted in real time, and the temperature difference of each state can be guaranteed within +/-2 ℃.