Fusing device for fireproof electro-hydraulic actuating mechanism
An electro-hydraulic actuator and fusing technology, applied in valve devices, fluid pressure actuating devices, valve operation/release devices, etc., can solve the problems of potential safety hazards, hydraulic oil outflow, etc., and achieve convenient processing and reliable operation Effect
Pending Publication Date: 2022-08-05
YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD
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AI Technical Summary
Problems solved by technology
At present, during the use of electro-hydraulic actuators, there is a problem that the hydraulic oil will flow out after the fusible plug is completely fused at high temperature, which poses a safety hazard
Method used
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Embodiment Construction
[0029] The present invention is as Figure 1-3 As shown in the figure, it includes a valve body 1, a reverse one-way valve 2, a two-way sealing piston 3 and a fusible plug 4. The upper part of one end of the valve body 1 is provided with a channel one 11, and the middle part of the other end is provided with a channel two 12. A middle hole 13 is arranged in the middle of the valve body, and the first channel and the second channel are respectively connected to the middle hole;
[0030] The reverse check valve 2 is arranged at the top of the middle hole, the fusible plug 4 is arranged at the bottom end of the middle hole, and the passage is connected to the chamber 21 of the reverse check valve; in case of fire, high pressure oil into the chamber, thereby pushing the spool;
[0031] The two-way sealing piston 3 is movably arranged in the middle hole and between the reverse one-way valve and the fusible plug, and the two-way sealing piston is used to seal the middle hole.
[0...
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The invention discloses a fusing device for a fireproof electro-hydraulic actuating mechanism. Relates to an electro-hydraulic actuating mechanism. Comprising a valve body, a reverse one-way valve, a two-way sealing piston and a fusible plug, a first channel is formed in the upper portion of one end of the valve body, a second channel is formed in the middle of the other end of the valve body, a middle hole is formed in the middle of the valve body, and the first channel and the second channel are communicated with the middle hole; the reverse one-way valve is arranged at the top end of the middle hole, the fusible plug is arranged at the bottom end of the middle hole, and the first channel is communicated with a cavity of the reverse one-way valve. The two-way sealing piston is movably arranged in the middle hole and located between the reverse one-way valve and the fusible plug. The bidirectional sealing piston comprises a piston body, an upper rod is arranged at the top of the piston body, a lower rod is arranged at the bottom of the piston body, when a fusible body is arranged in the fusible plug, the upper rod is used for making contact with a valve element in the reverse one-way valve, and the lower rod is used for making contact with the fusible body. The device is convenient to process and reliable to operate.
Description
technical field [0001] The invention relates to an electro-hydraulic actuator, in particular to a fuse device for a fire-proof electro-hydraulic actuator. Background technique [0002] The electro-hydraulic actuator is a device that converts the standard input signal through electro-hydraulic conversion, hydraulic amplification, and converts it into a 0° to 90° angle displacement output torque or linear displacement output force corresponding to the input signal. Compared with traditional pneumatic actuators and electric actuators, it has great advantages, and has the characteristics of large stroke, large thrust or torque, fast response time, high sensitivity, and compact mechanism. [0003] With the continuous development of the electro-hydraulic actuator industry, the petrochemical industry has higher and higher requirements for the safety of the electro-hydraulic actuator industry. In the event of a fire, the electro-hydraulic actuator is required to automatically perfor...
Claims
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IPC IPC(8): F16K31/12F16K17/40F16K17/38F16K15/06F15B13/04
CPCF16K31/12F16K17/40F16K17/383F16K15/063F15B13/0405F15B13/027F15B2013/041
Inventor 蔡军吴运国张宇褚俊王英冯在良吴江徐文才李德胜汤占峰
Owner YANGZHOU ELECTRIC POWER EQUIP MFG FACTORY CO LTD