Pressure control device of high-temperature hydraulic system
A hydraulic system and pressure control technology, applied in fluid pressure actuators, fluid pressure actuator system components, servo motor components, etc., can solve system pressure instability, proportional pressure regulating valve demagnetization, easy to burn operators, etc. problem, to achieve the effect of improving stability and ensuring safety
Pending Publication Date: 2019-05-03
XIAN QINGAN AERONAUTICAL TESTING EQUIP
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Problems solved by technology
[0005] The invention provides a pressure control device for a high-temperature hydraulic system to solve the technical problems that the existing manual overflow valve is easy to burn the operator when it is adjusted, and the proportional pressure regulating valve may lose its magnetism and cause the system pressure to be unstable due to long-term high-temperature operation.
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0023] see image 3 and Figure 4 , the pressure control device of the high-temperature hydraulic system of the present invention includes a cooler 3, a proportional pressure regulating valve 4 and a pilot manual relief valve 1 with a damping hole 2; the oil outlet of the pilot manual relief valve 1 is connected to the oil return pipeline, Its external control oil port is connected with the oil inlet port 34 of the cooler 3;
[0024] The oil inlet port of the proportional pressure regulating valve 4 is connected with the oil outlet port 36 of the cooler 3, and the oil outlet port of the proportional pressure regulating valve 4 is connected with the oil return pipeline.
[0025] The high-temperature hydraulic oil enters the pilot manual relief valve 1 through the oil supply pipeline, and is divided into two routes through the damping hole 2 in...
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Abstract
The invention relates to a pressure regulation device, in particular to a pressure control device of a high-temperature hydraulic system. By adoption of the pressure control device of the high-temperature hydraulic system, the technical problems that when an existing manual overflow valve is regulated, an operator is likely to be scalded; and a proportional pressure-regulation valve is likely to be demagnetized during long-term work, and consequentially, the pressure of a system is instable are solved. The pressure control device comprises a cooler, a proportional pressure-regulation valve, and a pilot manual overflow valve provided with a damping hole, wherein an oil outlet of the pilot manual overflow valve is connected with an oil return pipeline, and an external control oil port of thepilot manual overflow valve is connected with an oil inlet of the cooler; and an oil inlet of the proportional pressure-regulation valve is connected with an oil outlet of the cooler, and an oil outlet of the proportional pressure-regulation valve is connected with the oil return pipeline. By adoption of the pressure regulation device, remote regulation of the high-temperature hydraulic system can be achieved, and an operator can be prevented from being scalded; and meanwhile, a non-high-temperature hydraulic environment of a hydraulic electromagnet can be achieved, the performance of the proportional pressure-regulation valve is ensured, and accordingly, the stability of the pressure of the hydraulic system is improved.
Description
technical field [0001] The invention relates to a pressure regulating device, in particular to a pressure control device of a high temperature hydraulic system. Background technique [0002] In high temperature hydraulic systems, manual relief valves (such as figure 1 ) or proportional relief valve (such as figure 2 ) to adjust the system pressure. [0003] The pressure regulation of the manual relief valve is relatively stable, but it needs to be adjusted on site in the hydraulic system. Due to the oil injection in the high-temperature hydraulic system, when the operator adjusts, the adjustment handle of the manual relief valve is likely to burn the operator, posing a safety hazard. [0004] The proportional relief valve adopts electric proportional adjustment, which eliminates the danger of burning hands during on-site adjustment. However, the electromagnet of the proportional relief valve works at high temperature for a long time, and there may be loss of magnetism, w...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F15B13/02F15B21/0423
Inventor 赵锋涛郑建翟文博
Owner XIAN QINGAN AERONAUTICAL TESTING EQUIP