High and low temperature environment simulation test device

An environmental simulation test, high and low temperature technology, applied in the field of aviation environmental test, can solve the problems of test termination, easy frosting of evaporator, slow cooling rate, etc.

Inactive Publication Date: 2015-06-03
中国航空工业集团公司航空动力控制系统研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the temperature of the evaporator itself, the inner cavity material of the closed box, the test piece, the air in the closed box and other objects must be lowered to reach the target low temperature, and the power consumption is large and the cooling rate is slow.
And once the closed test box is opened, the evaporator is prone to frost and the test is terminated, and the test can only be continued after defrosting

Method used

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  • High and low temperature environment simulation test device
  • High and low temperature environment simulation test device
  • High and low temperature environment simulation test device

Examples

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Embodiment Construction

[0020] like figure 1 The sequence shown is air compressor 1, pre-oil and water-removing air filters 2 (2), refrigerated dryer 3, rear oil-removing, water-removing air filters 4 (3), no heat The regenerative dry air filter 5 (2 pieces) and the cascade refrigeration system 6 are connected by air pipes. One end of the high and low temperature gas transmission pipe 7 is connected to the cascade refrigeration system, and the other end is connected to the heater 8. The air outlet of the heater 8 is inserted into the insulation box. 9 and fixed with the insulation box 9.

[0021] like figure 2 As shown, the stacked refrigeration system consists of two separate refrigeration cycles, referred to as a high temperature stage refrigeration cycle and a low temperature stage refrigeration cycle. The compressor 601, the air-cooled radiator 602, the dryer 603, the capillary tube 604, and the plate heat exchanger 605 are connected in series to form a high-temperature refrigeration cycle. T...

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Abstract

The invention provides a high and low temperature environment simulation test device, wherein the high and low temperature environment simulation test device comprises an air compressor, a refrigerated dryer, an air filter, a cascade refrigeration system, a high and low temperature air delivery pipe and a thermal insulation box connected in sequence; the thermal insulation box packages the transmission product, the compressed air is cooled by the cascade refrigeration system after processed by the refrigerated dryer and filtered by the air filter, and transmitted to the thermal insulation box through the high and low temperature air delivery pipe.

Description

technical field [0001] The invention belongs to the field of aviation environment test, and relates to a simulation test device for high and low temperature environment. Background technique [0002] At present, the high and low temperature test can be completed under the condition of the rotation of the transmission product. The high temperature and low temperature are respectively completed by two devices. First, the transmission product is wrapped with a heat preservation box. During the high temperature test, the output power is controlled to adjust the heater (usually heating The heater is the heating temperature of the nickel-chromium alloy high-speed heating electric heating wire), and the heated air is passed into the insulation box. The working principle and equipment structure are relatively simple. During the low temperature test, liquid nitrogen is introduced into the insulation box to cool it down. The cost of liquid nitrogen is high, the temperature control acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64G7/00
Inventor 周吉洪玮毛克胜俞虎澄季晓德张云龙
Owner 中国航空工业集团公司航空动力控制系统研究所
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