阅读说明：本技术 一种液压油油温控制系统及控制方法 (Hydraulic oil temperature control system and control method ) 是由 苏杰 陈忱 王光平 朱孝庭 于 2020-04-30 设计创作，主要内容包括：本发明提供了一种液压油油温控制系统及控制方法,所述液压油油温控制系统包括液压油箱、油泵电机组、溢流阀和电加热器,所述电加热器设置于所述液压油箱上,所述液压油箱、所述油泵电机组和所述溢流阀依次通过管路连通,所述溢流阀的回油口通过第一回油管路连接所述液压油箱。本发明的有益效果：能够防止液压油在加热时出现因液压油局部温度过高,出现变质的情况,以提高液压油的使用寿命。(The invention provides a hydraulic oil temperature control system and a control method, wherein the hydraulic oil temperature control system comprises a hydraulic oil tank, an oil pump motor set, an overflow valve and an electric heater, the electric heater is arranged on the hydraulic oil tank, the oil pump motor set and the overflow valve are communicated in sequence through pipelines, and an oil return port of the overflow valve is connected with the hydraulic oil tank through a first oil return pipeline. The invention has the beneficial effects that: can prevent that hydraulic oil from appearing because of hydraulic oil local temperature is too high when the heating, the rotten condition appears to improve the life of hydraulic oil.)

1. The utility model provides a hydraulic oil temperature control system, its characterized in that, includes hydraulic tank (1), oil pump motor group (2), overflow valve (3) and electric heater (5), electric heater (5) set up in on hydraulic tank (1), hydraulic tank (1) oil pump motor group (2) with overflow valve (3) loop through the pipeline intercommunication, the oil return opening of overflow valve (3) is connected through first oil return pipeline (6) hydraulic tank (1).

2. The hydraulic oil temperature control system according to claim 1, further comprising a reversing valve (4), wherein an oil inlet of the reversing valve (4) is communicated with a pipeline between the oil pump motor set (2) and the overflow valve (3), and an oil outlet of the reversing valve (4) is connected with the hydraulic oil tank (1) through a second oil return pipeline (7).

3. The hydraulic oil temperature control system according to claim 2, further comprising a pressure tap (11), wherein the pressure tap (11) is connected to a working port of the directional valve (4).

4. The hydraulic oil temperature control system of claim 2, further comprising a radiator (8), wherein the oil pump motor set (2), the radiator (8) and the oil inlet of the reversing valve (4) are sequentially communicated through a pipeline.

5. The hydraulic oil temperature control system of claim 1, further comprising a first oil return branch (9), wherein one end of the first oil return branch (9) is connected to the first oil return line (6), and the other end of the first oil return branch (9) is adapted to be connected to an actuator.

6. The hydraulic oil temperature control system according to any one of claims 1-5, wherein the oil pump motor set (2) is connected to an oil tank oil outlet of the hydraulic oil tank (1) through a pipeline, the electric heater (5) is located at one end of the hydraulic oil tank (1) close to the oil tank oil outlet, and an oil return port of the overflow valve (3) is connected to the other end of the hydraulic oil tank (1) far away from the oil tank oil outlet through the first oil return pipeline (6).

7. A hydraulic oil temperature control method based on the hydraulic oil temperature control system of any one of claims 1-6, characterized by comprising:

acquiring the temperature of hydraulic oil in a hydraulic oil tank (1);

and controlling an oil pump motor set (2) and an electric heater (5) according to the temperature of the hydraulic oil so as to carry out overflow heating or preset low-power electric heating on the hydraulic oil.

8. The hydraulic oil temperature control method according to claim 7, wherein the controlling an oil pump motor group (2) and an electric heater (5) according to the hydraulic oil temperature includes:

when the temperature of the hydraulic oil is lower than a first preset temperature, controlling the electric heater (5) to be started and controlling the oil pump motor set (2) to be closed so as to enable the hydraulic oil to be electrically heated at a preset low power through the electric heater (5);

when the temperature of the hydraulic oil reaches the first preset temperature, controlling the electric heater (5) to be closed and controlling the oil pump motor set (2) to be started so as to enable the hydraulic oil to overflow and heat through the overflow valve (3);

when the temperature of the hydraulic oil reaches a second preset temperature, the oil pump motor set (2) is controlled to be closed so that the hydraulic oil stops heating, wherein the second preset temperature is higher than the first preset temperature.

9. The hydraulic oil temperature control method according to claim 8, wherein the hydraulic oil temperature control system further comprises a reversing valve (4), an oil inlet of the reversing valve (4) is communicated with a pipeline between the oil pump motor set (2) and the overflow valve (3), and an oil outlet of the reversing valve (4) is connected with the hydraulic oil tank (1) through a second oil return pipeline (7); according to hydraulic oil temperature, control oil pump motor group (2) and electric heater (5) still include:

when the hydraulic oil temperature reaches the first preset temperature, controlling the electric heater (5) to be closed, controlling the oil pump motor set (2) to be started, and simultaneously controlling an oil outlet of the reversing valve (4) to be communicated with a second oil return pipeline (7);

acquiring the running time of the oil pump motor set (2) after the hydraulic oil temperature reaches the first preset temperature;

and when the running time reaches the preset running time, controlling the oil outlet of the reversing valve (4) and the second oil return pipeline (7) to be closed.

10. The hydraulic oil temperature control method according to claim 9, wherein the hydraulic oil temperature control system further comprises a radiator (8), and the oil pump motor set (2), the radiator (8) and an oil inlet of the reversing valve (4) are sequentially communicated through a pipeline; further comprising:

and when the temperature of the hydraulic oil reaches a third preset temperature, controlling the radiator (8) and the oil pump motor set (2) to start, and controlling the oil outlet of the reversing valve (4) to be communicated with the second oil return pipeline (7), wherein the third preset temperature is higher than the second preset temperature.