Zero temperature controlling switch for groundwork vent pipe

A technology for controlling switches and ventilation pipes, applied in the direction of valve operation/release devices, valve lifts, valve details, etc., to achieve the effect of reducing project cost, low cost, and full application value

Inactive Publication Date: 2005-09-21
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that its temperature sensing and control system is mainly composed of memory alloy. The delay effect of memory alloy can only make the control system complete the prescribed action within a set temperature range. Warm season is often on, especially at night

Method used

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  • Zero temperature controlling switch for groundwork vent pipe
  • Zero temperature controlling switch for groundwork vent pipe

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Embodiment Construction

[0016] Below, the present invention will be further described in conjunction with accompanying drawing:

[0017] A zero temperature control switch 1 for roadbed ventilation pipe is composed of a control rod 6, a spring 7, an airtight container 8 filled with a unit water body, and a metal shell 9. The housing 9 is equipped with a spring 7 and an airtight container 8 full of 2-4 unit water bodies, and one end of the control rod 6 passes through the spring 7 in the housing 9 and is connected with the airtight container 8 full of water in the housing 9; The other end of 6 is connected with the shaft 5 of the consolidation damper 4 in the ventilation pipe 2 in the roadbed 3 .

[0018] The airtight container 8 and the casing 9 are made of aluminum alloy.

[0019] As the ambient temperature outside the subgrade 3 changes day and night, due to the small volume of the unit water body in the shell 9, as the outside temperature changes, it is very easy to change the physical state, that...

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Abstract

This invention discloses a zero temperature control switch used for subgrade ventilating pipe. It is consisted by control bar, spring, unit sealing tank with full of water and metal shell. Spring and 2~4 unit sealing tanks with full of water are filled in shell, the material of sealing tank is metal material. One end of the control bar is connected to the sealing unit through the spring in shell, the other end is connected to axial bar of consolidate air cock in ventilating bar of subgrade. Its manufacturing is easy, cost is low, so the construction cost can be reduced. It is only need to connected to axial bar when on-site construction to realize the cooling down effect of self control ventilating subgrade.

Description

technical field [0001] The invention mainly relates to a control switch for controlling the temperature field of permafrost engineering, especially for protecting ventilation pipes in permafrost subgrades. Background technique [0002] Permafrost is a kind of soil and rock with a temperature below 0°C and contains ice. According to the length of frozen soil retention time, it can be divided into short-term frozen soil (several hours to half a month), seasonal frozen soil (half a month to several months), and permafrost. Soil (several years to more than millions of years), its distribution area is called cold area. 50% of the world's land area is covered by cold regions. In my country, the areas of cold regions and permafrost account for 75% and 21.5% of the national land area respectively. my country is the third largest country in the world with permafrost, and the area of ​​high-altitude permafrost ranks the largest in the world. [0003] Not only will the properties of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K31/68
Inventor 俞祁浩程国栋何乃武
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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