Engineering vehicle, hydraulic oil preheating device and method
A technology for engineering vehicles and preheating devices, which is applied to fluid pressure actuation devices, fluid pressure actuation system components, mechanical equipment, etc., can solve the problems of low preheating efficiency and long preheating time, and achieve short preheating time. , energy saving, high heat exchange efficiency
Active Publication Date: 2015-07-08
SANY HEAVY MACHINERY
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Problems solved by technology
[0003] In view of this, the present invention proposes an engineering vehicle, hydraulic oil preheating device and method to solve the problems of long preheating time and low preheating efficiency of existing preheating devices
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[0034] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0035] see figure 1 , the figure shows a preferred embodiment of the hydraulic oil preheating device of the present invention, which is used in engineering vehicles. Generally speaking, an engineering vehicle includes an exhaust pipe 7 and a hydraulic oil tank 8 for storing hydraulic oil, and high-temperature exhaust gas is discharged from the exhaust pipe 7 . As shown in the figure, the hydraulic oil preheating device of this embodiment at least includes a heat exchanger 3 , an oil inlet pipe 4 , an oil outlet pipe 2 and an oil pump 5 . The heat exchanger 3 includes a first port, a second port, a third port and a fourth port, wherein the first port communicates with the second port, and the th...
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The invention discloses an engineering vehicle, a hydraulic oil preheating device and a hydraulic oil preheating method. The hydraulic oil preheating device comprises a heat exchanger, an oil inlet pipe, an oil outlet pipe and an oil pump, wherein a first port of the heat exchanger is connected with an exhaust pipe of the engineering vehicle, and is communicated with a second port of the heat exchanger; one end of the oil inlet pipe is connected with a third port of the heat exchanger, and the other end of the oil inlet pipe is used for connection with a hydraulic oil tank of the engineering vehicle; one end of the oil outlet pipe is connected with a fourth port of the heat exchanger, and the other end of the oil outlet pipe is connected with the hydraulic oil tank; the fourth port and third port of the heat exchanger are communicated; and the oil pump is used for pumping hydraulic oil in the hydraulic oil tank into the heat exchanger for heat exchange, and enabling the hydraulic oil to flow back into the hydraulic oil tank. The hydraulic oil of the engineering vehicle is preheated by tail gases of the engineering vehicle; and therefore, by the preheating method, energy sources are saved. In addition, convective heat exchange is adopted between the hydraulic oil and the tail gases, so that the heat exchange efficiency is high, and the preheating time is short.
Description
technical field [0001] The invention relates to the field of engineering vehicles, in particular to an engineering vehicle, a hydraulic oil preheating device and a method. Background technique [0002] Engineering vehicles generally transmit power through hydraulic systems. The hydraulic system generally includes a hydraulic oil tank, an oil pump, pipelines and valves, etc., which are filled with hydraulic oil. When the temperature is low, the viscosity of the hydraulic oil will increase, making it difficult for the oil pump to absorb oil and affecting the normal operation of the hydraulic actuator. For this situation, the commonly used solution at present is to preheat the hydraulic oil through a preheating device. Specifically, a heat dissipation pipe is arranged in the hydraulic oil tank of the engineering vehicle, and the heat dissipation pipe is connected with the hot water pipe of the engine of the engineering vehicle, and a heat pump is arranged on the communication...
Claims
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IPC IPC(8): F15B21/04
Inventor 方明祥陶丕森
Owner SANY HEAVY MACHINERY