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The method of using solar refrigeration device to maintain thermal stability of permafrost subgrade

A technology for solar refrigeration and permafrost foundations, which is applied to refrigerators, refrigeration and liquefaction, roads, etc. It can solve the problems of heat rods losing their function, and achieve the effect of simple structure, strong practicability, and wide applicability

Active Publication Date: 2016-01-20
NORTHWEST RES INST CO LTD OF C R E C +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of hot rod device for maintaining the thermal stability of the permafrost foundation subgrade, when the temperature of the evaporation section is higher than that of the heat dissipation section in cold seasons and there is a negative temperature difference, the heat in the subgrade and subgrade will be lost to the atmosphere from bottom to top, and it will be frozen for many years The permafrost thawing season is the warm season. At this time, the temperature of the evaporation section of the hot rod is lower than the temperature of the heat dissipation section, and there is a positive temperature difference. The refrigerant stops circulating, causing the hot rod to lose effect

Method used

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  • The method of using solar refrigeration device to maintain thermal stability of permafrost subgrade
  • The method of using solar refrigeration device to maintain thermal stability of permafrost subgrade
  • The method of using solar refrigeration device to maintain thermal stability of permafrost subgrade

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Effect test

Embodiment 1

[0025] The structure of the solar refrigeration device: it includes a condenser pipe 3, and heat dissipation fins 5 are installed on the outer periphery of the condenser 3. One end of the condenser pipe 3 is provided with an evaporator 4, and the other end is provided with a solar refrigeration driver 1 (see figure 1 ). The solar refrigeration driver is provided with a light-transmitting tube 1-6 outside the metal-coated tube 1-1, and the metal-coated tube and the light-transmitting tube are closed and vacuumized; the metal-coated tube 1-1 is provided with radial grids at intervals 1-9, and fill the radial grid 1-9 with refrigerant 1-10; one end of the metal coating tube 1-1 is connected to the condenser tube 3 through the straight flange 2, and the other end is connected by the closed flange 1-4 seal. The inner core of the metal-coated tube 1-1 is provided with an air guide tube 1-8, and one end of the air guide tube corresponding to the closed flange 1-4 is provided with a ...

Embodiment 2

[0028] The structure of the solar refrigeration device: it includes a condenser pipe 3, and heat dissipation fins 5 are installed on the outer periphery of the condenser 3. One end of the condenser pipe 3 is provided with an evaporator 4, and the other end is provided with a solar refrigeration driver 1 (see Figure 4 ). Wherein, the solar refrigeration driver includes a metal coating tube 1-1, and a light transmission tube 1-6 is arranged outside the metal coating tube 1-1, and the metal coating tube and the light transmission tube 6 are closed and vacuumized; the metal coating tube 1-1 Axial grids 1-9 are arranged at intervals, and refrigerants 1-10 are filled in the axial grids 1-9; one end of the metal coating tube 1-1 passes through the straight-through flange 2 and the condenser tube 3 Docking, the other end is docked with the condensation pipe 3 of another solar refrigeration device through a straight-through flange 2 . A vacuum extraction port 1-6 is provided on the s...

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Abstract

The invention provides a method for maintaining thermal stability of permafrost subgrade by using a solar refrigeration device, which includes two parts: the solar refrigeration device and its arrangement method. Wherein the refrigerating device includes a condensing tube, the outer periphery of the condenser is provided with cooling fins, one end of the condensing tube is provided with an evaporator, and the other end is provided with a solar cooling drive; the evaporator is a metal single tube coated with heat-absorbing material on its outer surface. In application, the solar cooling device is arranged vertically independently or connected with each other, and the evaporator is partially buried under the permafrost subgrade, and the condensation pipe and the refrigeration driver are protruded above the subgrade surface of the permafrost subgrade. The invention utilizes the climate characteristics of the plateau permafrost region to realize the annual operation and cycle work of the solar refrigeration device, especially in the warm season of the permafrost thawing season, it can realize active refrigeration, and is used for permafrost subgrade heating. Stable maintenance can effectively prevent subsidence, inclination, cracking and other diseases of permafrost subgrade.

Description

Technical field [0001] The present invention involves a method of stabilizing the heat of frozen land in many years, and especially involves a method that uses solar refrigeration devices to maintain many years of frozen land base thermal stability.This method can also be used for active refrigeration in technical fields such as solar air conditioners and solar cold storage. Background technique [0002] In the hot stability operation and maintenance of the foundation road base of frozen land, most of the domestic and foreign materials are used at home and abroad to form materials such as gravel, slices, etc., laying on the slope protection, lanes, and road bases of the road base to form a thermal barrier.And prevent the melting of frozen soil layers for many years.The use of these materials has played a certain role in the stable maintenance of the base roads of frozen land for many years.However, the gaps of gravel and sliced stones are easily covered by wind sand or snow to lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/06E02D3/115F25B27/00
Inventor 米维军贾鋆李勇熊治文郑静韩龙武武小鹏屈耀辉魏永梁赵相卿
Owner NORTHWEST RES INST CO LTD OF C R E C