Hydraulic oil heating system
A heating system and hydraulic oil technology, which is applied to fluid pressure actuation system components, fluid pressure actuation devices, mechanical equipment, etc., can solve the problems of large heating oil volume and power waste, and achieve less heating oil volume and lower Effect of heating power and reducing waste of heating power
Active Publication Date: 2016-09-28
XIAN QINGAN AERONAUTICAL TESTING EQUIP
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Problems solved by technology
[0007] The purpose of the present invention is to provide a new type of hydraulic oil heating system to solve the problems of large amount of heating oil and serious waste of power in the prior art
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[0028] Such as image 3 As shown, in the hydraulic oil heating system of the present invention, the oil supply pipeline output by the pump group is connected in series with an electric heater 2 to heat the oil, and the oil supply pipeline temperature sensor 1 detects the temperature of the oil. The oil return pipeline is divided into two branches to return oil through the proportional two-position three-way reversing valve 10. The first oil return branch directly returns to the oil suction port of the pump unit 4, and the second oil return branch returns to the oil tank 3 through the radiator 6. .
[0029] When the oil temperature is far lower than the target temperature value (such as: the oil temperature is not close to 10% of the target temperature value), the return oil does not pass through the oil tank 3 and all go through the first branch directly to the oil suction port of the pump group 4. The second cycle temperature heating effectively prevents the cooling oil in t...
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The invention relates to a hydraulic oil liquid heating system and a method for carrying out heating control by employing the system, and aims at solving the problems of serious power waste generated when a large quantity of oil is heated, and the like in the prior art. A hydraulic oil liquid main loop of the heating system provided by the invention is composed of an oil tank, an oil supply line, a pressure regulating valve and an oil return line, wherein the oil supply line is connected with and provided with a pump unit, a heater and a temperature sensor in series; the oil return line is divided into two branch circuits through a proportional two-position three-way reversing valve; the first branch circuit is used for returning oil to an oil suction inlet of the pump unit; the second branch circuit is used for returning oil to the oil tank through a cooling device; an on-off electromagnetic valve is arranged on a circulating liquid cooling loop of the cooling device. The hydraulic oil liquid heating system has the advantages of low heating power waste, low oil heating power, high oil heating rate, and high temperature control precision of oil; the oil heating rate can be improved to 10 DEG C / min; linear change can be achieved; the temperature control precision can reach + / -1 DEG C.
Description
technical field [0001] The invention relates to a hydraulic oil heating system, in particular to an oil heating system used in hydraulic high-temperature equipment. Background technique [0002] The traditional hydraulic oil heating system is directly heated in the oil tank (such as figure 1 ) or heating in the oil supply line (such as figure 2 ), moderate cooling in the oil return line, so that the oil in the hydraulic system can be warmed up and maintained at an appropriate temperature. It can be seen that both of these two typical solutions need to heat all the oil in the tank to the required temperature. Has the following disadvantages: [0003] 1. The amount of heating oil is large and the power is wasted seriously. [0004] 2. The heating and cooling rate is low, and it is difficult to achieve a linear temperature change. [0005] 3. The temperature control accuracy is poor, and the general control accuracy is ±10°C. [0006] 4. There is a potential safety hazar...
Claims
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IPC IPC(8): F15B21/04
CPCF15B21/042
Inventor 丁登科刘文杰赵锋涛潘耀勤张镐京
Owner XIAN QINGAN AERONAUTICAL TESTING EQUIP