An electro-hydraulic servo valve with spool position detection
An electro-hydraulic servo valve and valve core technology, applied in servo motor components, fluid pressure actuation devices, mechanical equipment, etc., can solve the problem of lack of valve core displacement
Active Publication Date: 2015-09-16
山东科瑞石油装备有限公司 +3
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Problems solved by technology
However, the electro-hydraulic servo valves currently on the market lack the detection of spool displacement.
Method used
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[0008] An electro-hydraulic servo valve with spool position detection, consisting of a permanent magnet 1, a magnet guide 2, an armature 3, a spring tube 4, a nozzle 5, a magnetic ring 6, a fixed magnetic core 7, an electrical amplifier 8, a signal line 9, Spool 10, lower valve body 11, oil filter 12, feedback spring rod 13, coil 14, upper valve body 15, spool displacement indicator 16, coil 14 is installed on armature 3, armature 3 is installed on magnetizer 2 , the magnet guide 2 is placed inside the upper valve body 15, the spring tube 4 and the feedback spring rod 13 are installed on the armature 3, the armature 3 is surrounded by the permanent magnet 1, the spring tube 4 is in the middle of the two nozzles 5, and the feedback spring rod 13 The top is in the middle of the spool 10, the magnetic ring 6 is installed on the right side of the middle of the spool 10, the fixed magnetic core 7 is fixed on the right half of the spool 10, and one end of the fixed magnetic core 7 is...
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An electro-hydraulic servo valve with a valve core position detection function consists of a permanent magnet, a magnetizer, a gag bit, a spring pipe, a nozzle, a magnetic ring, a fixed magnetic core, an electric amplifying device, a signal line, a valve core, a lower valve body, an oil filter, a feedback spring rod, a coil, an upper valve body and a valve core displacement display; the coil is arranged on the gag bit, the gag bit is arranged on the magnetizer, the magnetizer is arranged in the upper valve body, the spring pipe and the feedback spring rod are arranged on the gag bit, the gag bit is surrounded by the permanent magnet, the spring pipe is arranged in the middle of the nozzle, the top end of the feedback spring rod is arranged at the middle part of the valve rod, the magnetic ring is arranged at the right side of the middle part of the valve core, the fixed magnetic core is fixed on the electric amplifying device, the electric amplifying device is fixed on the lower valve core, the oil filter is arranged at the lower part of the valve core of the electro-hydraulic servo valve, and the electric amplifying device and the valve core displacement display are connected with each other by the signal line. The electro-hydraulic servo valve has the following beneficial effect that valve core displacement monitoring is realized.
Description
technical field [0001] The invention relates to an electro-hydraulic servo valve with spool position detection. Specifically, it applies the principle of electromagnetic induction to convert the displacement of the electro-hydraulic servo valve spool into an electrical signal, which is converted into a digital signal for display through an amplifying circuit. The utility model is convenient for detecting the movement of the spool of the electro-hydraulic servo valve, and belongs to the field of automatic devices. Background technique [0002] Electro-hydraulic servo valves are more and more widely used in modern hydraulic devices, and it is urgent to know the operating conditions of electro-hydraulic servo valves during system debugging and normal operation. However, once the electro-hydraulic servo valve fails, it needs to return to the original factory for testing and checking the failure, which is very inconvenient. The fault of the electro-hydraulic servo valve is gener...
Claims
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IPC IPC(8): F15B13/02
Inventor 李涛岳吉祥王运安陈志强古仁龙刘睿刘东张金鹏
Owner 山东科瑞石油装备有限公司