A single-point test device for impact pressure in the cooling zone of rolling steel and its test method

Abstract

The invention provides a single-point test device for impact pressure in the steel rolling cooling zone, which includes a fixed rod, a fixed sleeve, a level, a bracket fixed ring, a pressure transmitter fixed plate, a pressure transmitter, a bracket, a bracket sleeve and a display instrument ;The center of the pressure transmitter fixing plate is opened and connected with the fixing rod; the pressure transmitter is connected to the fixing plate through threads; the output wire of the pressure transmitter passes through the inner cavity of the fixing rod and is connected to the display instrument; the fixing rod Go through the fixing sleeve and fix it with positioning screws and positioning holes; the level is embedded in the fixing sleeve, and the bracket fixing ring is set outside the fixing sleeve and fixed with fixing bolts; the bracket and the bracket fixing ring are welded together; the bracket sleeve is fixed through The bolts adjust the height of the support; the display instrument is used to display the pressure signal output from the pressure transmitter. The invention is a single-point pressure measurement device with simple structure, easy manufacture, repeated disassembly and assembly, movable testing of one-dimensional pressure field, and change of measuring range by replacing the pressure sensor.

Description

technical field [0001] The invention belongs to the field of metallurgy and relates to the technical field of impact pressure measurement, in particular to a device for measuring the impact pressure of cooling water in a rolling cooling zone of a steel plant. Background technique [0002] Ultra-rapid cooling is an important link in the production process of steel rolling, and its cooling uniformity and cooling effect are closely related to the uniformity of properties of the rolled steel plate. According to the theory of heat transfer, the effect of convective heat transfer in the cooling process is related to the flow velocity of the fluid on the surface of the steel plate. Under the same conditions, the greater the flow velocity, the better the heat transfer effect; at the same time, the impact pressure of the fluid is proportional to the square of the fluid velocity, so The cooling effect of the fluid can be quantitatively described by measuring the dynamic pressure of th...

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Problems solved by technology

[0003] The invention aims at the limited operating space of the ultra-fast cooling system for steel rolling, the undetermined size and uniformity of the impact pressure of the cooling medium sprayed on the surface of the billet during the cooling process, and the difficulty of pressure testing, etc., and provides a simple structure, easy to manufacture, and can be repeatedly disassembled and assembled. , It can be moved to test the one-dimensional pressure field, and the single-point pressure measurement device that can change the range by replacing the pressure sensor can conveniently and quickly test the impact pressure of the fluid sprayed on the surface of the steel plate, and can test the cooling uniformity during the ultra-fast cooling process of steel rolling Conducting test analysis plays an important role in improving the performance of the steel plate and ensuring the uniformity of cooling of the steel plate

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