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System for reducing air temperature in tunnel directly by geothermal resource

A geothermal resource and air temperature technology, applied in mine/tunnel ventilation, geothermal energy, household heating, etc., can solve the problem of wasting geothermal resources, and achieve the effect of reducing power consumption, stabilizing supply, and solving unstable supply

Pending Publication Date: 2019-04-05
CHINA RAILWAY HI TECH IND CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention proposes a system that uses geothermal resources to directly lower the air temperature in the tunnel, which solves the problem of wasting geothermal resources in the prior art when air cooling tunnels, and can greatly reduce the consumption of electric energy by air-conditioning units

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  • System for reducing air temperature in tunnel directly by geothermal resource
  • System for reducing air temperature in tunnel directly by geothermal resource

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Embodiment 1

[0022] Such as figure 1 As shown, it is a schematic diagram of an embodiment of the present invention. In this case, the shield tunneling method is used as an example, including the shield body 10, the cutter head 20 of the shield machine, and the rock and soil 30 around the tunnel. The specific implementation method is: install the heat-driven refrigerator 40 at the tail of the shield machine, the heat-driven refrigerator 40 is an absorption or adsorption refrigerator, and the heat-driven refrigerator 40 extracts geothermal water or The water vapor obtains part of the energy, and the heat-driven refrigerator 40 obtains another part of energy through the electric heater 46. The heat energy obtained is the driving heat source of the generator of the heat-driven refrigerator 40, and the heat-driven refrigerator 40 is discharged through the geothermal water. The device 45 discharges the hot water used by the earth to the outside of the tunnel, and the heat-driven refrigerator 40 ...

Embodiment 2

[0024] Such as figure 2 As shown, it is a schematic diagram of another implementation case of the present invention. This case still uses the shield tunneling method as an example. The difference from Embodiment 1 is that the heat-driven refrigerator 40 is installed outside the tunnel, and the heat-driven refrigerator 40 is installed outside the tunnel. The refrigerator 40 extracts geothermal water from the geothermal water layer through the shaft 47, and also extracts geothermal water from the tunnel through the geothermal collection device 41. The heat-driven refrigerator 40 sucks normal-temperature air through the suction device 43 and performs cooling. figure 2 The example shown is applicable to the case where the tunnel does not pass through the geothermal water layer, and the refrigerator needs to extract hot water from the geothermal water layer through the shaft.

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Abstract

The invention provides a system for reducing air temperature in a tunnel directly by a geothermal resource. The system comprises a geothermal collecting device and a heat-driven refrigerator; the geothermal collecting device provides a heat source for driving the heat-driven refrigerator, air cooled through the heat-driven refrigerator is delivered into the tunnel through an air delivery device, acool water cooling circulating device which is arranged outside the tunnel provides cool water to the heat-driven refrigerator. The system has the advantages that the geothermal resource can be utilized to reduce power consumption of a refrigerating unit greatly; the system utilizes both geothermal energy and electric power, the electric power can be regulated to be supplement according to supplyof the geothermal energy, supply of the electric power is reduced when collecting quantity of geothermal water or vapor is high, supply of the electric power is increased when collecting quantity ofgeothermal water or vapor is low, and thus stably supply of energy needed for the refrigerator is achieved and the problem of unstable supply of the geothermal resource is solved.

Description

technical field [0001] The invention relates to the technical field of tunnel air cooling, in particular to a system for directly reducing air temperature in a tunnel by using geothermal resources. Background technique [0002] During tunnel excavation, an air supply system is required for forced ventilation to maintain the temperature, humidity and oxygen content of the air within a range suitable for construction workers. In areas rich in geothermal resources, underground hot water, water vapor, and rocks continue to heat the air in the tunnel, and the temperature inside the tunnel is far higher than the limit that construction personnel can bear. At present, the usual solution is to install high-power air-conditioning units outside the tunnel, send low-temperature air into the tunnel, and at the same time pump the geothermal water out of the tunnel and discharge it directly. This consumes a lot of electricity and wastes geothermal resources. . Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F3/00E21F1/00E21F17/00E21F17/06F24T10/00
CPCE21F1/00E21F3/00E21F17/00E21F17/06
Inventor 李建斌闫沁太
Owner CHINA RAILWAY HI TECH IND CORP LTD
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