A closed-loop temperature control system and a test platform
A temperature control system and closed loop technology, applied in the hydraulic field, can solve problems such as jumping changes and inaccurate temperature control, and achieve the effect of improving accuracy
Active Publication Date: 2022-04-26
WEICHAI POWER CO LTD +1
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Problems solved by technology
[0002] At present, in the process of hydraulic pump performance test or factory inspection, the temperature of hydraulic oil is relatively high after passing through the loading valve. The flow rate of the oil in the cooler is a variable amount, not a constant amount, and the temperature of the oil passing through the loading valve is not a constant value. Therefore, there is a difference in the temperature of the oil passing through the cooler at each moment, resulting in the The temperature keeps fluctuating and changing. When the collected temperature is used as the input signal to control the refrigerant flow of the cooler, it will cause the problem of inaccurate temperature control.
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...
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The invention relates to the field of hydraulic technology, in particular to a closed loop temperature control system and a test platform. The closed circuit temperature control system includes a closed circuit that forms a hydraulic system circuit with a hydraulic pump. The closed circuit includes a loading valve that can guide the oil from the oil outlet line of the hydraulic pump to the return port of the hydraulic pump through the closed circuit. Oil pipeline, between the loading valve and the oil return pipeline of the hydraulic pump, there are also filters, first cooler and mixed liquid oil tank. A first temperature sensor is arranged in the mixed liquid oil tank. When the oil in the hydraulic pump passes through the loading valve from the oil outlet, the oil enters the mixed oil tank, and the first temperature sensor detects the temperature of the oil in the mixed oil tank, so that the first cooler can control the temperature of the oil according to the obtained average temperature. control, so the temperature detected by the first temperature sensor is more accurate.
Description
technical field [0001] The invention relates to the field of hydraulic technology, in particular to a closed loop temperature control system and a test platform. Background technique [0002] At present, in the process of hydraulic pump performance test or factory inspection, the temperature of hydraulic oil is relatively high after passing through the loading valve. The flow rate of the oil in the cooler is a variable amount, not a constant amount, and the temperature of the oil passing through the loading valve is not a constant value. Therefore, there is a difference in the temperature of the oil passing through the cooler at each moment, resulting in the The temperature keeps fluctuating, and when the collected temperature is used as an input signal to control the refrigerant flow of the cooler, it will cause the problem of inaccurate temperature control. [0003] Therefore, there is an urgent need for a closed-loop temperature control system and a test platform to solv...
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IPC IPC(8): F15B19/00F15B21/041F15B21/0423F15B13/02
CPCF15B19/00F15B21/041F15B21/0423F15B13/027F15B13/02
Inventor 杨飞王晓虎徐翊杰谢欣武王晓楠崔凯王敏
Owner WEICHAI POWER CO LTD