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Flow-stabilizing regulating and controlling device of sea water pump

A technology for regulating devices and seawater pumps, which is applied in pump control, non-variable pumps, liquid variable-capacity machinery, etc., can solve problems affecting the stability and service life of seawater pumps, and achieve the goal of ensuring working performance and service life Effect

Inactive Publication Date: 2009-10-14
JIANGSU SHENTONG VALVE
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AI Technical Summary

Problems solved by technology

[0002] In the heat exchanger system of a nuclear power plant, due to the difference in temperature with the seasons, the amount of seawater required for the same heat transfer is different, or because the seawater changes with the tide, the pressure difference also changes, which affects the stability of the seawater pump of the main equipment. performance and service life. At present, only butterfly control valves are used in the system as the steady flow control device of seawater pumps, which can only roughly adjust the flow and pressure difference, which seriously affects the working stability and service life of seawater pumps.

Method used

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  • Flow-stabilizing regulating and controlling device of sea water pump

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Embodiment Construction

[0010] like figure 1 As shown, a seawater pump steady flow control device includes a manual butterfly regulating valve 1 and an automatic regulating valve 3 , the manual butterfly regulating valve 1 and the automatic regulating valve 3 are connected through a connecting pipe 2 .

[0011] The automatic regulating valve 3 is composed of a valve body 4 and an electric actuator 5 . The inner cavity of the valve body 4 of the manual butterfly control valve 1 and the automatic control valve 3 is lined with rubber, and the material of the valve plate is duplex steel, which has excellent seawater corrosion resistance.

[0012] The manual butterfly control valve 1 is used as the coarse adjustment unit for range control, and the electric actuator 5 of the automatic control valve 3 receives the signal of the flow sensor at the outlet of the seawater pump, and realizes the micro-precision adjustment function through the signal conversion of its own servo amplifier.

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Abstract

The invention provides a flow-stabilizing regulating and controlling device of a sea water pump, which comprises a manual butterfly regulating valve and an automatic regulating valve, wherein the manual butterfly regulating valve is connected with the automatic regulating valve through a connecting pipe. The automatic regulating valve is composed of a valve body and an electric executing mechanism, and rubber liner of inner cavities of the valve bodies and valve plates of the manual butterfly regulating valve and the automatic regulating valve are made of dual phase steel. The invention can accurately regulate system flow and pressure difference slightly by adopting combination regulation, and ensure the work property and the service life of the sea water pump.

Description

technical field [0001] The invention relates to a valve device, in particular to a seawater pump steady flow control device. Background technique [0002] In the heat exchanger system of a nuclear power plant, due to the difference in temperature with the seasons, the amount of seawater required for the same heat transfer is different, or because the seawater changes with the tide, the pressure difference also changes, which affects the stability of the seawater pump of the main equipment. At present, only the butterfly regulating valve is used as the steady flow control device of the seawater pump in the system, which can only roughly adjust the flow and pressure difference, which seriously affects the working stability and service life of the seawater pump. Contents of the invention [0003] In order to overcome the deficiency that the existing butterfly control valve can only roughly adjust the flow rate and pressure difference, which seriously affects the working stabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/22F04C28/00F04D27/00
Inventor 张逸芳陆平
Owner JIANGSU SHENTONG VALVE
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