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Heat convection method of spring balance type regulating roadbed

A technology of convection heat transfer and spring balance, applied in roads, roads, buildings, etc., can solve the problems of cost of use, increased difficulty in operation and maintenance, easy damage to action units, and easy failure of connecting rods, so as to avoid harsh environment erosion. and Destruction Influence, Shortened Action Response Time, Direct Effect of Rotational Dynamics

Active Publication Date: 2017-09-26
俞祁浩
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AI Technical Summary

Problems solved by technology

In an extremely harsh environment, the sensing unit and the action unit are not only vulnerable to damage, but also the connecting rods are prone to failure, resulting in the failure of the entire device
At the same time, the installation of the device needs to be drilled and punched separately on the ventilation pipe, which is cumbersome and inefficient
The existence of these problems has greatly increased the cost of using this technology and the difficulty of operation and maintenance, which has greatly affected the promotion of this technology
Another example: Yu Qihao (Yu Qihao, Cheng Guodong, He Naiwu. Control switch for heat insulation and cold transfer of ventilation pipes in roadbeds: China, 200520004195.3[P], 2006-9-13), Yu Qihao (Yu Qihao, Cheng Guodong, Ma Wei. Load-type hydraulic automatic temperature control ventilation device: China, 03218744.0 [P], 2004-8-18) designed hydraulic system, it is difficult to work effectively in the extreme environment of the Qinghai-Tibet Plateau

Method used

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Embodiment Construction

[0025] Such as figure 1 , figure 2 As shown, a spring-balanced method for controlling subgrade convective heat transfer, the method refers to firstly fixing the shaft rod 2 on the wall of the ventilation pipe, and socketing the rotating shaft sleeve 3 on the shaft shaft 2; Then the damper 1 is fixed on the rotating shaft sleeve 3; finally, a limiter 4 is set on the shaft rod 2, and a memory alloy spring 5 and a balance are arranged symmetrically with the shaft rod 2 as a symmetrical axis in the center of the shaft rod 2. Spring 6.

[0026] in:

[0027] The shape memory alloy spring 5 refers to one of Ti Ni binary system, Ti Ni-X ternary system, Cu base and Fe base shape memory alloy, and its control and setting temperature is -10°C~10°C.

[0028] The balance spring 6 refers to one or a combination of two or more of conventional metal, plastic and rubber springs.

[0029] The working principle of the present invention is:

[0030] The memory alloy spring 5 has a relativel...

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Abstract

The invention relates to a heat convection method of a spring balance type regulating roadbed. The method includes steps of firstly, fixing an axis rod on the pipe wall of a ventilating pipe, and sheathing a rotary shaft sleeve pipe on the axis rod; then fixing an air door on the rotary shaft sleeve pipe; finally, arranging a spacer on the axis rod; symmetrically arranging a memory alloy spring and a balance spring at the center of the axis rod by taking the axis rod as an symmetrical axis. The heat convection method is simple, convenient to install, high in stability, and wide in using scale; the method can completely adapt to the extreme severe environment of the Tibet Plateau, meet the special requirements of project construction, and greatly improve the cooling performance of the ventilating roadbed.

Description

technical field [0001] The invention relates to the technical field of permafrost engineering, in particular to a spring-balanced method for regulating convective heat transfer of a subgrade. Background technique [0002] In permafrost regions such as the Qinghai-Tibet Plateau and Northeast my country, through long-term evolution, development and changes, thick layers of underground ice with a thickness of several meters or even more than ten meters have been formed. With the change of climate environment and the impact of human engineering activities, the permafrost and underground ice degrade and melt, which leads to various engineering disasters and has an important impact on the stability of various major engineering buildings. [0003] Actively cooling the permafrost foundation through the adoption of engineering measures to protect permafrost is a key way to ensure the long-term safe operation and stability of permafrost engineering. Among these measures, effective co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/06
CPCE01C3/06
Inventor 俞祁浩
Owner 俞祁浩
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