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Temperature field control method for large-scale salt fog environment simulation test system

A salt spray test and temperature field technology, applied in the field of environmental simulation, can solve problems such as strong inhomogeneity, complex boundary conditions, random interference, etc., and achieve the effect of small fluctuations

Inactive Publication Date: 2011-10-05
ENG DESIGN & RES INST OF GENERAL ARMAMENTS DEPT
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Problems solved by technology

[0005] The invention provides a combined control method for temperature field divisions, which solves the problems of complex boundary conditions, strong inhomogeneity, and random interference when the temperature field of a large-space salt spray simulation system is realized, and effectively and actively controls the temperature of the test space. and temperature gradient meet the test index requirements

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  • Temperature field control method for large-scale salt fog environment simulation test system
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  • Temperature field control method for large-scale salt fog environment simulation test system

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Embodiment Construction

[0027] Hereinafter, the present invention will be further described through specific embodiments in conjunction with the accompanying drawings.

[0028] Simultaneous heat transfer on six sides of the large-scale salt spray test space of the present invention is an ideal way. However, considering factors such as the access of large specimens and the structure of the top layer of the test, the heat transfer surface is selected from the two side walls and the ground in the length direction, a total of three surfaces. First of all, according to the principle of multiple heat sources and combined heating, the two opposite sides of the large salt spray test space are divided into grids. The division method of the side wall heating surface is as follows: according to the basic unit cell of the side wall heating surface is 2m (width) × 1m (height), the total length of the side wall heating surface = the length of the test space, and the total height is rounded to facilitate division i...

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Abstract

The invention relates to a temperature field control method for a large-scale salt fog environment simulation test system, comprising the following steps of: reasonably transversely and longitudinally partitioning opposite long-side side walls or the ground of test space, and installing a modularized heating device in each box, wherein each heating device is provided with an independent temperature control member so that differential temperature regulation can be carried out as required; and the control step based on model prediction and the control steps with forecast are adopted for integral temperature control. The temperature field control method is an important method for realizing the large-scale salt fog environment simulation test system, has the capability of integrally and locally regulating a temperature field, and has the advantages of self adaptation, small volatility and the like.

Description

technical field [0001] The invention belongs to the technical field of environment simulation. Specifically, it relates to a method for controlling the time-temperature field of salt spray simulation in a large space. Background technique [0002] In the salt spray exposure stage, in order to ensure the natural and uniform settlement of the salt spray, no air flow is allowed in the test space, and the air flow rate is basically zero, so that the temperature field control cannot be adjusted by conventional air conditioning. At present, in small-scale test chambers, convective heat transfer is used to heat up the space, such as jacket circulation heating. [0003] In this way, due to the small space of the test box, the initial heat transfer conditions and boundary conditions of the test space in all directions are basically the same, the heat flux distribution is basically the same, and the heated air flows under the action of natural convection in the small space. It is be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/00
Inventor 卢连成万全宋道宏刘松刘鹰
Owner ENG DESIGN & RES INST OF GENERAL ARMAMENTS DEPT
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