Integrated detection system for thermal performance of lower-medium vacuum compound insulation pipeline and application of integrated detection system

A composite thermal insulation and integrated detection technology, applied in the direction of material thermal development, etc., can solve problems such as composite thermal insulation pipes that have not been seen

Inactive Publication Date: 2012-07-04
北京建筑工程学院
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  • Abstract
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  • Claims
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Problems solved by technology

Judging from the literatures publicly reported at home and abroad, only the reports of various material physical property test devices and the overall thermal performance test device of the wall are seen, but no report of the thermal resistance test device of the overall thermal insulation structure

Method used

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  • Integrated detection system for thermal performance of lower-medium vacuum compound insulation pipeline and application of integrated detection system
  • Integrated detection system for thermal performance of lower-medium vacuum compound insulation pipeline and application of integrated detection system
  • Integrated detection system for thermal performance of lower-medium vacuum compound insulation pipeline and application of integrated detection system

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0050] An integrated detection system for the thermal performance of a low-medium vacuum composite thermal insulation pipeline is composed of a control and data acquisition system, a heat transfer oil circulation system and a constant temperature chamber.

[0051] Such as figure 1 As shown, the structure of the control and data acquisition system is as follows: the industrial control computer is respectively connected to the printer and the RS232 bus 1, the RS232 / 485 converter is respectively connected to the RS232 bus 1 and the RS485 bus 21, and the RS485 bus 21 is respectively connected to the first 1 temperature sensor T1-the 48th temperature sensor T48, the first heat flow sensor Q1-the 16th heat flow sensor Q16, the first power module DL1-the third power module DL3 and the first intelligent regulator Trk1-the third intelligent regulator Trk3 are connected, ;

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Abstract

The invention discloses an integrated detection system for thermal performance of a lower-medium vacuum compound insulation pipeline and application of the integrated detection system. The integrated detection system is composed of a control and data acquisition system, a conduction oil circulating system and a constant temperature chamber, wherein the control and data acquisition system is used for acquiring data including the temperature, the output power of an electric heater, the heat flow and the like on one hand, and controlling the temperature of a working steel tube, adjusting the output power of the electric heater and controlling the pressure of a vacuum layer on the other hand; the conduction oil circulating system is used for providing conduction oil of a certain temperature for a test tube section; the constant temperature chamber is used for keeping the temperature of the test tube section in a certain range. The integrated detection system disclosed by the invention has the beneficial effects that: the parameters including the temperature, the output power of the electric heater and the heat flow and the like can be automatically recorded and controlled; and the test result is accurate and high in reliability, which is helpful for research on a heat-transfer mechanism of the insulation pipeline.

Description

technical field [0001] The invention belongs to the technical field of thermal performance detection, in particular to an integrated detection system for thermal performance of a low-medium vacuum composite thermal insulation pipeline and its application. Background technique [0002] Heat pipeline is an important part of central heating system to transport hot water, steam and other heat media. In recent years, the temperature of the heat medium transported by mainstream heat pipelines at home and abroad has increased from about 150-250°C to over 600°C, and the steam pressure has reached above 2.5Mpa. The vacuum composite insulation layer in the thermal pipeline is a new technology to improve the thermal insulation performance of the pipeline, ensure the thermal parameters of the transported heat medium, enhance the anti-corrosion performance of the pipeline and dynamically monitor the leakage. In 2004, direct-buried pipelines with vacuum layer composite insulation with lo...

Claims

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Application Information

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IPC IPC(8): G01N25/20
Inventor 那威宋艳李德英史永征
Owner 北京建筑工程学院
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