High-precision linear liquid flow adjustment valve
A liquid flow, regulating valve technology, applied in safety valve, balance valve, valve device and other directions, can solve the problems of small adjustable ratio, uncontrollable, poor reliability, etc.
Active Publication Date: 2012-10-03
XIAMEN ZHONGGUANNENG GAS TURBINE TECH CO LTD
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Problems solved by technology
In the application of the above regulating valve, the pressure behind the valve often fluctuates, resulting in fluctuations in the oil output, and it is uncontrollable
At present, the domestic liquid fuel control valves generally have the above problems, such as small adjustable ratio and poor reliability.
Method used
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Embodiment Construction
[0009] see figure 1 , the metering valve is that a valve core 5, two valve seats, namely sealing rings 8, and two springs 7 are arranged on the channel of the valve body 9, the valve core is a drum placed horizontally, and the drum mouth faces the valve outlet 34 , that is, the inner cavity of the drum becomes a part of the rear channel P2 of the valve core; the rotating shaft 5-1 with a spline is fixed at the center of the outside of the bottom of the drum, and is tightly fitted with the inner sleeve of the bearing 4 on the valve body, with a spline The outer end of the rotating shaft 5-1 protrudes out of the valve body and cooperates with the driving device such as a reducer to transmit the torque for the rotation of the valve core. The pointer 1 and 3 are bearing caps on the rotating shaft, on which the dial can be marked to cooperate with the pointer It is used to indicate the rotation angle of the spool; two valve ports 5-2 are opened on the side wall of the drum, and the...
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The invention provides a high-precision linear liquid flow adjustment valve. The invention aims to solve the problem that at present, on the use occasion of an adjustment valve, the downstream pressure fluctuates frequently so the oil pump capacity fluctuates. The key point of the invention is that: the high-precision linear liquid flow adjustment valve is formed by integrating a metering valve and a constant differential valve on a valve body; and the constant differential valve comprises a piston; and an oil cavity on one side of the piston is communicated with a spool rear passage of the metering valve, and the other side of the piston is positioned on a passage between a spool front passage and a valve oil return port. The high-precision linear liquid flow adjustment valve has the advantages that: the flow has a linear relationship with an angular travel of the spool, and is not related with the outlet pressure of the valve, and the requirement of the adjustment valve is met; and the adjustment of flow has the effect of slow increasing and quick decreasing, and the safety of power equipment is guaranteed.
Description
technical field [0001] The invention relates to a liquid fuel flow regulating valve used on an infusion pipeline, in particular to a high-precision linear liquid flow regulating valve. Background technique [0002] At present, a liquid fuel regulating (metering) valve is used on high-power engines such as gas turbines and internal combustion engines in China. The basic requirement of the regulating valve is that the oil output of the valve should be controllable regardless of how the pressure behind the valve fluctuates. Controllable means that the oil output of the valve should have a linear relationship with the rotation angle of the spool. In the application of the above regulating valve, the pressure behind the valve often fluctuates, resulting in fluctuations in the oil output, which is uncontrollable. At present, the domestic liquid fuel control valves generally have the above problems, such as small adjustable ratio and poor reliability. Contents of the invention ...
Claims
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IPC IPC(8): F16K17/22
Inventor 梁明剑姚德生姚伟华
Owner XIAMEN ZHONGGUANNENG GAS TURBINE TECH CO LTD