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Method for measuring temperature of polymer melt on screw rod surface

A melt temperature and polymer technology, applied in the field of mechanization and chemical industry, can solve the problems of complex data acquisition system, increase the complexity of experimental system or production equipment, etc., and achieve the effect of expanding the measurement range

Inactive Publication Date: 2015-03-25
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, when there are many measuring points, the number of signal lines will increase exponentially, resulting in a more complex data acquisition system and increasing the complexity of the entire experimental system or production equipment

Method used

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  • Method for measuring temperature of polymer melt on screw rod surface
  • Method for measuring temperature of polymer melt on screw rod surface
  • Method for measuring temperature of polymer melt on screw rod surface

Examples

Experimental program
Comparison scheme
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Embodiment

[0025] figure 1 It is a flowchart of a method for measuring the polymer melt temperature on the surface of a screw provided in Example 1 of the present invention. Such as figure 1 As shown, the method mainly includes the following steps:

[0026] Step 11: Open a radial measuring hole in the area to be tested of the hollow screw of the screw-type polymer processing equipment to be tested, and set a temperature sensor in the opened measuring hole.

[0027] In the embodiment of the present invention, the screw-type polymer processing equipment is a polymer processing equipment with (hollow) screw elements, including: single-screw, twin-screw, multi-screw and planetary screw extruders, and twin-rotor continuous mixing machine and screw injection molding machine, etc.

[0028] The area to be tested on the hollow screw to be tested can be set on different functional elements of the hollow screw to be tested, including: a hollow screw conveying element, and functions such as melti...

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Abstract

The invention discloses a method for measuring temperature of a polymer melt on a screw rod surface. The method comprises the steps as follows: a radial measurement hole is formed in a to-be-measured region of a to-be-measured hollow screw rod of screw rod type polymer processing equipment; a temperature sensor is arranged in the formed measurement hole; a signal wire of the temperature sensor is led out from a power input end of a to-be-measured hollow screw rod and is connected to a signal conversion and transmission box; when a machine runs, the temperature sensor transmits a temperature signal to a signal receiver on an external data collection system in an electromagnetic wave form through the signal conversion and transmission box; and automatic collection of the temperature signal of the polymer melt on the screw rod surface is achieved. Through adoption of the method disclosed by the invention, the defect in the existing temperature measurement technology that the temperature of the melt on the screw rod surface is difficult to measure at the working speed can be overcome; and a new way is provided for real-time monitoring of the melt temperature in the screw rod type polymer processing equipment.

Description

technical field [0001] The invention relates to the technical field of mechanization and chemical engineering, in particular to a method for measuring the polymer melt temperature on the surface of a screw. Background technique [0002] In polymer processing and molding, accurate measurement and control of melt temperature is a necessary means to ensure product quality and process optimization. In screw polymer processing equipment, the uniformity of melt temperature in the melt delivery section has an important impact on product quality. Scientific research and production practice have shown that in the melt delivery section of screw polymer processing equipment, the melt temperature at different radial positions on the same cross-section is different, and sometimes the temperature difference can reach more than 10°C. Accurately measuring the melt temperature at different radial positions on the same cross-section of the melt delivery section, and then mastering its temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/92B29C48/92
CPCB29B7/726B29C45/78B29C48/92B29C2945/7604B29C2945/76187B29C2948/92209B29C2948/9239
Inventor 李建立薛平贾明印
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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