JP5222200B2 - Tunnel cooling system - Google Patents

Description

  The present invention relates to a cooling device for cooling the inside of a tunnel.

  As a cooling device for cooling the inside of the tunnel when excavating the ground with a shield machine, a cooling tower disposed outside the tunnel and a pipe extending from the cooling tower into the tunnel are provided. Some have cooled the air around the pipe body by circulating cooling water between the cooling tower and the pipe body (see, for example, Patent Document 1).

JP-A-49-104434 (page 2, upper left column, lines 9-20, FIG. 1)

  Here, since the temperature in the tunnel rises due to the heat from various devices arranged in the tunnel, such as the drive motor of the shield machine, the oil cooler, or the heat exchanger of the air conditioner, the conventional cooling described above. Like the device, the cooling effect is low only by cooling the air in the tunnel.

  Therefore, an object of the present invention is to provide a cooling device that can solve the above-described problems and enhance the cooling effect in the tunnel.

In order to solve the above problems, the present invention is a cooling device for cooling the inside of a tunnel when excavating the ground by an excavator, and is provided outside the tunnel, and a water supply device that cools cooling water; wherein comprising a supply from the water supply device for supplying the cooling water to disposed the load device in the tunnel tube, and a recovery pipe for returning the cooling water to the water supply device from said load device, said The recovery pipe is connected to a storage tank disposed in the tunnel, and the storage tank stores the cooling water and supplies the cooling water to the excavator .

  In this configuration, by circulating the cooling water between the water supply device outside the tunnel and the load device in the tunnel, the load device in the tunnel is directly cooled by the cooling water without waste heat in the tunnel. The heat source in the tunnel can be accurately cooled, and the cooling effect in the tunnel can be enhanced. The load device is a device that generates heat when used, such as a drive motor or a heat exchanger, and the type and configuration thereof are not limited.

Moreover, the cooling water after cooling a load apparatus can be supplied to an excavation machine, and this cooling water can be used for backfilling or a mud work. Therefore, it is not necessary to separately provide water supply equipment for the excavator in the tunnel, so that excavation work can be saved.

  In the cooling device for a tunnel described above, a part of the recovery pipe may be embedded in a side wall portion of a shaft that communicates the inside of the tunnel with an external space.

  In this configuration, the temperature of the cooling water in the recovery pipe can be lowered by moving the heat of the cooling water flowing through the recovery pipe to the ground around the shaft. Therefore, since the cooling water is returned to the water supply device in a state where the water temperature is lowered, the energy required for cooling the cooling water can be reduced. Moreover, when the water supply apparatus which cools cooling water using vaporization heat is used, the amount of water evaporated at the time of cooling can be reduced.

  In the cooling device for a tunnel described above, the supply pipe is connected to an air conditioner disposed in the tunnel, and the air conditioner blows cool air cooled by the cooling water into the tunnel. You may comprise as follows.

  In this configuration, the temperature in the tunnel can be locally lowered by disposing the air conditioner in the tunnel. In addition, an air conditioner can be provided in arbitrary places by arrange | positioning a supply pipe over the wide range in a tunnel.

  According to the tunnel cooling device of the present invention, since the load device in the tunnel is directly cooled by the cooling water without waste heat in the tunnel, the heat source in the tunnel can be accurately cooled, The cooling effect can be enhanced.

It is the whole block diagram which showed the cooling device of this embodiment.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the present embodiment, as shown in FIG. 1, an example will be described in which the inside of a tunnel T built in the ground is cooled by a shield machine 10 having a cutter 11 that can rotate around an axis in the direction of excavation.

  The shield machine 10 according to the present embodiment is a known machine, and the cylindrical body portion 12 disposed behind the cutter 11 is provided with a drive motor 13 (load device) for rotating the cutter 11. Yes. Further, an oil cooler 14 (load device) is disposed behind the cylindrical body portion 12 in the tunnel T. The oil cooler 14 is a heat exchanger that cools driving oil supplied to various devices (not shown) such as a jack for propulsion of the shield machine 10, a screw conveyor for earth removal, or an elector device. Drive oil is cooled.

  The cooling device 1 according to the present embodiment cools the inside of the tunnel T, and supplies cooling water to a water supply device 20 disposed outside the tunnel T and various load devices disposed in the tunnel T from the water supply device 20. And a recovery pipe 40 for returning the cooling water from each load device to the water supply device 20.

  The water supply device 20 is a known cooling tower disposed on the ground G, and heat of vaporization is obtained by bringing outside air into contact with cooling water stored in an internal tank (not shown) by a blower (not shown). Is used to cool the cooling water.

  The supply pipe 30 is a hollow pipe that extends from the internal tank (not shown) of the water supply apparatus 20 outside the tunnel T through the shaft T1 of the tunnel T and extends into the tunnel T. The supply pipe 30 is provided with a water supply pump (not shown) that sucks the cooling water stored in the internal tank of the water supply device 20 and discharges it to the tunnel T side of the supply pipe 30. In addition, two supply-side branch pipes 31 and 32 are connected to the supply pipe 30, and a part of the cooling water flowing through the supply pipe 30 flows into the supply-side branch pipes 31 and 32.

  The end of the supply pipe 30 on the face side is connected to the drive motor 13 of the shield machine 10. Then, the cooling water supplied from the supply pipe 30 to the drive motor 13 flows around the drive motor 13, whereby the drive motor 13 is cooled.

Further, a first supply side branch pipe 31 and a second supply side branch pipe 32 are provided in a portion of the supply pipe 30 disposed in the tunnel T.
Of the two supply-side branch pipes 31 and 32, the first supply-side branch pipe 31 on the face side is connected to the oil cooler 14. Then, the cooling water supplied to the oil cooler 14 from the supply pipe 30 through the first supply side branch pipe 31 circulates around or inside the oil cooler 14, thereby cooling the oil cooler 14.

Of the two supply-side branch pipes 31 and 32, the second supply-side branch pipe 32 on the wellhead side is a heat exchanger (not shown) of a water-cooled air conditioner 50 (load device) disposed in the tunnel T. The cooling water is supplied from the supply pipe 30 to the heat exchanger through the second supply side branch pipe 32.
The air conditioner 50 blows cold air cooled by passing through a heat exchanger into the tunnel T.

  The collection pipe 40 is a hollow pipe that extends from the drive motor 13 of the shield machine 10 into the tunnel T. A part of the recovery pipe 40 is embedded in the side wall portion of the shaft T1 of the tunnel T, and is connected to an internal tank (not shown) of the water supply apparatus 20 outside the tunnel T. Then, the cooling water whose temperature has risen by cooling the drive motor 13 is returned to the water supply device 20 through the recovery pipe 40. Further, three recovery side branch pipes 41, 42, 43 are connected to the recovery pipe 40, and a part of the cooling water flowing through the recovery pipe 40 is connected to each recovery side branch pipe 41, 42, 43. Inflow.

Further, a first recovery side branch pipe 41, a second recovery side branch pipe 42, and a third recovery side branch pipe 43 are provided in a portion of the recovery pipe 40 disposed in the tunnel T.
Of the three collection-side branch pipes 41, 42, 43, the first collection-side branch pipe 41 on the face side is connected to the oil cooler 14. Then, the cooling water whose temperature has been increased by cooling the oil cooler 14 is returned to the water supply device 20 through the first recovery side branch pipe 41 and the recovery pipe 40.

  Of the three collection-side branch pipes 41, 42, 43, the third collection-side branch pipe 43 on the wellhead side is connected to a heat exchanger (not shown) of the air conditioner 50. Then, the cooling water that has been used in the heat exchanger and whose water temperature has risen is returned to the water supply apparatus 20 through the third recovery side branch pipe 43 and the recovery pipe 40.

Of the three recovery side branch pipes 41, 42, 43, the second recovery side branch pipe 42 disposed between the first recovery side branch pipe 41 and the third recovery side branch pipe 43 is located in the tunnel T. It is connected to the storage tank 60 provided.
The storage tank 60 stores the cooling water supplied from the recovery pipe 40 through the second recovery side branch pipe 42 and supplies the cooling water to the shield machine 10 through the water supply pipe 61.

The water supply pipe 61 is a hollow pipe connected from the storage tank 60 to the cutter 11 of the shield machine 10. Further, the water supply pipe 61 is provided with a water supply pump (not shown) that sucks the cooling water in the storage tank 60 and discharges it to the face surface side of the water supply pipe 61.
The cooling water supplied from the storage tank 60 to the cutter 11 through the water supply pipe 61 is used as water for mudging the cut soil.

  In addition, a cleaning pipe 62 is connected to the water supply pipe 61. A cleaning pipe 62 branched from the water supply pipe 61 is branched in the cylindrical body portion 12 of the shield machine 10, and a part of the cooling water flowing through the water supply pipe 61 flows into the cleaning pipe 62. The cooling water flowing into the cleaning pipe 62 from the water supply pipe 61 is used as cleaning water for cleaning the filling nozzle and the like in the backfilling operation. Note that the cleaning pipe 62 may be directly connected to the storage tank 60 without branching the cleaning pipe 62 from the water supply pipe 61 as in the present embodiment.

  In the cooling device 1 according to the present embodiment as described above, the cooling water is circulated between the water supply device 20 outside the tunnel T and the load devices such as the drive motor 13, the oil cooler 14, and the air conditioner 50 inside the tunnel T. Thus, since the load device in the tunnel T is directly cooled by the cooling water without waste heat in the tunnel T, the heat source in the tunnel T can be accurately cooled, and the cooling effect in the tunnel is enhanced. Can do.

  Moreover, in the cooling device 1 of this embodiment, the collection pipe 40 is connected to the storage tank 60 in the tunnel T, and the cooling water after cooling various load devices is supplied to the shield machine 10, and this cooling water Can be used for backfilling and mud work. Therefore, since it is not necessary to separately provide a water supply facility for the shield machine 10 in the tunnel T, excavation work can be saved.

  Moreover, in the cooling device 1 of the present embodiment, a part of the recovery pipe 40 is embedded in the side wall portion of the vertical shaft T1, and the heat of the cooling water flowing through the recovery pipe 40 is moved to the ground around the vertical shaft T1. Thereby, the temperature of the cooling water in the collection pipe 40 can be lowered. Therefore, since the cooling water is returned to the water supply device 20 in a state where the water temperature is lowered, the energy required for cooling the cooling water can be reduced. In addition, the amount of water evaporated from the water supply device 20 during cooling can be reduced.

  In the cooling device 1 of the present embodiment, an air conditioner 50 that blows cold air cooled by the cooling water supplied from the supply pipe 30 into the tunnel T is disposed, and the temperature in the tunnel T is locally determined. Can be lowered. Further, since the supply pipe 30 is arranged over a wide range in the tunnel T, the air conditioner 50 can be provided at an arbitrary place.

The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.
For example, in the present embodiment, the load devices of the drive motor 13, the oil cooler 14, and the air conditioner 50 are cooled, but the type and configuration of the load device are not limited. Furthermore, it is not necessary to connect the supply pipe 30 or the recovery pipe 40 to all the load devices arranged in the tunnel T, and the cooling water may be supplied only to the load device having a large amount of heat.

  Further, the recovery pipe 40 may extend outside the tunnel T through the shaft T1 without burying a part of the recovery pipe 40 in the side wall portion of the vertical shaft T1.

DESCRIPTION OF SYMBOLS 1 Cooling device 10 Shield machine 11 Cutter 13 Drive motor 14 Oil cooler 20 Water supply device 30 Supply pipe 31 First supply side branch pipe 32 Second supply side branch pipe 40 Recovery pipe 41 First recovery side branch pipe 42 Second recovery side Branch pipe 43 Third collection side branch pipe 50 Air conditioner 60 Storage tank 61 Water supply pipe 62 Wash pipe T Tunnel T1 Vertical shaft

Claims (3)

A cooling device for cooling the inside of a tunnel when excavating the ground with an excavator,
A water supply device disposed outside the tunnel for cooling the cooling water;
A supply pipe for supplying the cooling water from the water supply device to a load device disposed in the tunnel;
A recovery pipe for returning the cooling water from the load device to the water supply device ,
The recovery pipe is connected to a storage tank disposed in the tunnel;
The storage tank stores the cooling water and supplies the cooling water to the excavator . The portion of the recovery pipe, the cooling device in the tunnel according to claim 1, characterized in that is embedded in the side wall portion of the vertical shaft which communicates with the tunnel and the external space. The supply pipe is connected to an air conditioner disposed in the tunnel,
The cooling device in a tunnel according to claim 1 or 2 , wherein the air conditioner blows cold air cooled by the cooling water into the tunnel.

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