Real wall temperature testing system and manufacturing process of high-temperature heating surface tubes for thermal power units

A technology for heating surface tubes and thermal power units, which is applied in the field of temperature measurement systems, can solve the problems that the metal wall temperature cannot be truly measured, and the service life of the furnace wall material cannot be correctly evaluated, so as to achieve guiding significance and accurate life evaluation. Effect

Active Publication Date: 2017-01-18
SUZHOU NUCLEAR POWER RES INST +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Both of the above two methods can only obtain an approximate equivalent wall temperature, and cannot really measure the real metal wall temperature, so that the material life of the furnace wall cannot be correctly evaluated.

Method used

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  • Real wall temperature testing system and manufacturing process of high-temperature heating surface tubes for thermal power units
  • Real wall temperature testing system and manufacturing process of high-temperature heating surface tubes for thermal power units
  • Real wall temperature testing system and manufacturing process of high-temperature heating surface tubes for thermal power units

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Embodiment Construction

[0024] The preferred embodiment of the present invention will be described in detail below in conjunction with accompanying drawing:

[0025] Such as Figure 1~3 The real wall temperature test system of the high-temperature heating surface tube of the thermal power unit shown mainly includes thermocouple 1, heat collector block 2, protective sleeve 3, hoop 4 and insulation material 5, etc. Among them, multiple thermocouples 1 can be set according to the measurement needs, and at the same time, the length of the thermocouples is also different according to the distance between the installation position and the roof of the furnace roof. For example, in a specific site, we choose 2 23m thermocouples, 6 20m thermocouples, 6 17m thermocouples, 4 14m thermocouples, 2 11m thermocouples, a total of 20 thermocouples for temperature measurement. The accompanying drawings of this embodiment provide one as an example. Specifically, the thermocouples 1 are welded on the corresponding tub...

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Abstract

The invention discloses a real wall temperature testing system of a high-temperature heating surface tube of a thermal power unit. In the protective casing, one end of it is welded on the tube wall, and the other end is fixed outside the boiler and connected to the junction box outside the furnace after being led out. The periphery of the heat collecting block is welded on the tube where the thermocouple welding part is located On the wall, it is used to fix the thermocouple and transfer heat quickly; the thermal insulation material is wrapped around the outer periphery of the heat collecting block and fixed by the hoop. The invention adopts the direct measurement of the temperature by directly welding the thermocouple on the boiler tube wall, so as to obtain the real wall temperature of the heating surface tube of the supercritical unit of the thermal power plant, and has more accurate and instructive significance for the life evaluation of the material.

Description

technical field [0001] The invention relates to a temperature measuring system, in particular to a testing system for the real wall temperature of the heating surface tube of an ultra-supercritical unit in a thermal power plant. Background technique [0002] The metal wall temperature of boiler pipes in thermal power plants is of great significance to the life evaluation of materials. Generally, a wall temperature measuring point is installed on the boiler roof to measure the metal wall temperature. Surface tube true metal wall temperature. The calculation of the tube wall temperature of the boiler heating surface adopts empirical formulas or based on reasonable heat transfer mathematical and physical models. The above two methods can only obtain an approximate equivalent wall temperature, and cannot really measure the real metal wall temperature, so that the material life of the furnace wall cannot be correctly evaluated. Contents of the invention [0003] The purpose o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/02
Inventor 赵彦芬张国栋薛飞张路夏咸喜马芹征赖云亭耿波郭宏梅蒙新明
Owner SUZHOU NUCLEAR POWER RES INST
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