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Flow regulation apparatus

A flow regulating device and flow regulating technology, applied in valve devices, valve operation/release devices, valve details, etc., can solve the problems of reduced flow capacity, unacceptable installation size, and inability to meet the requirements of large flow characteristics, etc., to achieve The effect of small pressure difference at both ends and large flow coefficient

Inactive Publication Date: 2009-03-04
NUCLEAR POWER INSTITUTE OF CHINA
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AI Technical Summary

Problems solved by technology

Even if the ball valve or butterfly valve with the largest flow coefficient is installed, it cannot meet the required large flow characteristics. In addition, the channel of this type of valve is circular. If this type of valve is used, its flow surface transitions from rectangular to circular and then back to Rectangular shape will greatly reduce the flow capacity, and the installation size does not allow

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0013] Such as figure 1 , 2 , Shown in 3 and 4, a kind of flow adjustment device, it comprises flow adjustment orifice 1 and adjustment mechanism 2, wherein, said flow adjustment orifice is rectangular double-layer flow adjustment orifice, and it is made of having holes, Moreover, the fixed steel plate 3 and the sliding steel plate 4 are composed of the same size of opening, the number of openings and the same position of the opening. On the other hand, the two steel plates can slide in a specific direction, and the flow area of ​​the channel can be changed through the dislocation sliding between them, so as to change the flow rate and realize flow regulation; the adjustment mechanism 2 is a screw adjustment mechanism, which includes an adjustment handle 5, Adjusting nut 6, screw rod 7, adjusting seat 8 and fixed block 9, adjusting seat 8 is installed...

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Abstract

The invention discloses a flow regulating device applicable to rectangular pipelines, which comprises a flow regulating orifice plate and a regulating mechanism, wherein, the flow regulating orifice plate is a rectangular double-layer orifice plate, and consists of a fixed steel plate and a sliding steel plate which have same hole size, quantity and location; each side of the fixed steel plate is provided with a protruding slope, both end faces of the sliding steel plate are inclined planes which are just installed on the fixed steel plate so that the two steel plates can slide along the specific directions; the regulating mechanism is a threaded regulating mechanism, the regulating seat of which is installed on a rectangular pipeline, wherein, a screw bolt is arranged in the regulating seat; the bottom end of the screw bolt is connected with the sliding steel plate, while the other end is connected with an adjusting nut; an adjusting handle is arranged on the adjusting nut, wherein, the combination of the adjusting nut and the screw bolt is capable of moving the sliding steel plate axially; the fixed block fixes the adjusting nut on the regulating seat. The invention can be installed in a rectangular pipeline for regulation of flow, the flow coefficient is high, and has the characteristics of low pressure differential at largest flow.

Description

technical field [0001] The invention belongs to a flow regulating device, in particular to a flow regulating device applicable to rectangular pipelines. Background technique [0002] The flow regulating device generally adopts a regulating valve, which is equivalent to an adjustable local resistance element, and the throttling area is changed by the movement of the spool. An important parameter of the regulating valve is the flow coefficient, which is defined as: when the regulating valve is fully open, the pressure difference between the two ends of the valve is 100Kpa, and the fluid gravity is 1gf / cm3, the flow rate flowing through the regulating valve per hour, thus It can be seen that the size of the flow coefficient reflects the flow capacity of the regulating valve. As far as the various regulating valves are concerned, only ball valves and butterfly valves have the largest flow coefficients. [0003] When carrying out the leakage test of the CNP1000 reactor coaming,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/02F16K3/314F16K31/44
Inventor 王盛杨来生方颖
Owner NUCLEAR POWER INSTITUTE OF CHINA
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