A valve core assembly with variable flow characteristics, adjusting valve and adjusting method thereof
A technology of flow characteristics and valve core assembly, applied in the field of regulating valve, can solve the problems of reducing work efficiency, the system cannot run continuously, etc., to achieve the effect of fast switching, simple and compact execution structure, and simple operation
Active Publication Date: 2020-10-30
ZHEJIANG UNIV
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[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific examples described here are only used to explain the present invention, not to limit the present invention.
[0033] Such as figure 1 As shown, in a basic embodiment of the present invention, a spool assembly with variable flow characteristics is provided, and its main components include an outer sleeve 15 , an inner sleeve 3 and a spool 5 . The valve core assembly is used in the valve body of the regulating valve, and is used for changing the inherent flow characteristics of the regulating valve without dismantling the valve body. The structure of the spool assembly is described in detail below to illustrate its working principle.
[0034] In the spool assembly, the outer sleeve 15 and the inner sleeve 3 are the core components for changing the inherent flow characteristics of the regulating valve. Wh...
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The invention discloses a valve core assembly with variable flow characteristics, an adjusting valve and a flow characteristic adjusting method of the valve core assembly. The valve core assembly comprises an outer sleeve, an inner sleeve and a valve core. The outer wall is provided with an array of throttling holes arranged periodically in the circumferential direction. The inner sleeve and the outer sleeve can rotate relative to each other about the axis, so that in each corresponding cycle, one column of throttling holes A0 can be overlapped with one of the N rows of throttling holes Ai toform one column of coincident throttling holes. Different flow characteristics may be achieved by arranging different coincident throttling hole columns. The valve core is arranged inside the inner sleeve and can slide axially along the inner sleeve to change the opening of the throttling hole combination. On the premise that the adjusting valve is not disassembled, the sleeve can be rotated through an external adjusting structure, the ideal flow characteristic is changed, free switching between different flow characteristics is achieved, multiple working conditions are rapidly met, and the using convenience of the adjusting valve is improved.
Description
technical field [0001] The invention relates to a regulating valve, in particular to a valve core assembly with variable flow characteristics, a regulating valve and an adjusting method thereof. Background technique [0002] Regulating valve, also known as control valve, is a valve with an actuator. According to the signal output by the control unit, the regulating valve changes the valve opening through the actuator, which can realize the control of process parameters such as pressure and flow in the system to meet the needs of users. With the continuous improvement of modern industrial automation, control valves are increasingly widely used in metallurgy, energy, chemical, petroleum, military, water conservancy and other industrial sectors, playing an irreplaceable role. [0003] The flow characteristic of the regulating valve refers to the relationship between the relative flow of the regulating valve (the ratio of the flow rate to the rated flow rate) and the relative s...
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Login to View More IPC IPC(8): F16K47/04F16K17/20
CPCF16K17/20F16K47/04
Inventor 钱锦远仇畅吴嘉懿金志江
Owner ZHEJIANG UNIV