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Maintenance method of controlled cooling after rolling flow regulating valve

A technology of flow control valve and adjustment method, applied in valve details, valve device, temperature control and other directions, can solve the problems of flow control valve adjustment accuracy deviation, etc., to improve the quality of steel plates and avoid abnormal valve action.

Active Publication Date: 2020-04-14
HANDAN IRON & STEEL GROUP +1
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Problems solved by technology

[0006] The technical problem to be solved in the present invention is the problem of the reflection speed of the cooling control flow regulating valve matching system after rolling and the stability of the valve flow adjustment. A maintenance method for the cooling control flow regulating valve after rolling is designed to solve the problem of the reflection speed and flow rate of the flow regulating valve. The problem of large deviation in the adjustment accuracy of the control valve

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  • Maintenance method of controlled cooling after rolling flow regulating valve
  • Maintenance method of controlled cooling after rolling flow regulating valve
  • Maintenance method of controlled cooling after rolling flow regulating valve

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the examples.

[0034] The invention discloses a method for maintaining a cooling control flow regulating valve after rolling, which includes the following steps:

[0035] S1. Formulate the adjustment method of the valve cylinder actuator of the flow control valve, so as to meet the stroke requirements of the valve during the adjustment action process;

[0036] S2. Set the corresponding speed adjustment method of the valve to meet the efficiency of the valve in the adjustment process, and avoid the phenomenon that the flow has not been adjusted and stabilized when the steel plate reaches the cooling control system due to the slow or long time of valve adjustment;

[0037] S3. Formulate a flexible test method for valves, so as to determine the specific faults of the valve;

[0038] S4. Formulate valve fault maintenance methods, master the composition and structure of valve parts, and use...

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Abstract

The invention relates to a maintenance method of a controlled cooling after rolling flow regulating valve. The maintenance method is characterized in that two programs and three valve flexibly testingmethods are set to judge that the valve has the problem of unstable flow regulation, and a breakdown maintenance method is adopted to thoroughly solve the problem of control flow fluctuation of the flow regulating valve. By applying the method, the problem of uneven cooling of a steel plate due to the fact that the water amount regulation precision fluctuation is large when the steel plate passesthrough a cold control region, the stable operation of a controlled cooling after rolling system is ensured, the operation reliability of the flow regulating valve is improved, the method is convenient and effective, the high-precision use of the flow regulating valve is recovered in a short time in a relatively low cost, the plate type control capability of the steel plate production is improved, and the practicability is high.

Description

technical field [0001] This patent application belongs to the design technical field of the cooling system of a plate and strip mill, and more specifically relates to the design and application of a method for maintaining a cooling control flow regulating valve after rolling in a medium and thick plate mill. Background technique [0002] The wide and thick plate production line of Handan Steel Medium Plate Plant began to upgrade its equipment and optimize its functions in April 2014. With the upgrading of mechanical equipment, the equipment of the cooling control system has also been improved and its functions optimized. The functional accuracy has been greatly improved, ensuring that the cooling equipment can give full play to its functional advantages, produce better products, and upgrade the product structure of the medium plate factory. [0003] The controlled cooling equipment after rolling is divided into two systems: 1. DQ cooling system; 2. ACC cooling system. The w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00F16K31/12G01M13/003B21B37/74
CPCB21B37/74F16K31/12F16K37/0083G01M13/003
Inventor 张振涛万蕾许敏郑首忠韩飞王欢程晓丽
Owner HANDAN IRON & STEEL GROUP
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