JP6876527B2 - Tunnel temperature improvement system - Google Patents

Description

The present invention relates to an in-tunnel temperature improving system for improving the in-tunnel temperature environment during tunnel construction.

In tunnel construction such as mountain tunnels, various heavy machines such as jumbo, wheel loader, dump truck and sprayer work in the tunnel, but each heavy machine generates a large amount of heat when driving, and the amount of heat from multiple heavy machines is accumulated. As a result, the temperature inside the tunnel during tunnel work tends to be very high, and the high temperature environment becomes more prominent in the vicinity of the face where there are many heavy machinery in general operation. Further, in addition to the problem that a high temperature environment is likely to occur in the vicinity of the face, there is also a problem of generation and retention of air pollutants such as exhaust gas from heavy machinery, dust in the exhaust gas, dust at the time of blasting and post-gas at the time of blasting. As measures against air pollutants, a method of supplying fresh air from a blower into the mine, collecting dust by a dust collector installed in a tunnel, and exhausting air pollutants to the outside of the mine is applied. At this time, if the position of the air supply port of the duct communicating with the blower is changed at any time only for the purpose of improving the temperature environment, the dust collection function of the dust collector will not be fully exhibited, and this time the exhaust gas and dust will be satisfactorily discharged to the outside of the tunnel. Since another problem such as diffusion without exhaust gas may occur in the tunnel, it is extremely difficult to take measures to improve the underground environment that satisfy both the suppression of the temperature rise in the tunnel and the suppression of the diffusion of air pollutants. ..

Here, Patent Document 1 discloses a cooling device in a tunnel capable of cooling a desired place such as the vicinity of the face of the tunnel. Specifically, it is a cooling device provided with an ice heat storage tank and a fan coil unit. A chilled water pipe passes through the ice heat storage tank, and the chilled water pipe is connected to a cooling coil in the fan coil unit. Wind is blown from the fan to the cooling coil, and this wind becomes cold air and is supplied into the mountain tunnel to cool the inside of the mountain tunnel. When the ice in the ice heat storage tank melts, ice is produced in the ice heat storage tank by an ice chiller provided outside the mountain tunnel. In Patent Document 1, as an example, a mode in which a cooling unit is composed of an ice heat storage tank, a cooling coil, a pump, and a fan, and the cooling unit is mounted on a transfer device is mentioned.

Japanese Unexamined Patent Publication No. 2005-139733

According to the cooling device described in Patent Document 1, it is possible to suitably cool a desired position such as near the face of a tunnel without separately providing large-scale equipment. By the way, in the embodiment disclosed here, as described above, the cooling unit is mounted on the transport device, and the transport device moves in the tunnel to suppress the temperature rise in the tunnel. Although it depends on the situation, various heavy machines such as jumbo, wheel loader, dump and sprayer are scattered in the tunnel, and heat is generated from each heavy machine everywhere in the tunnel. When attempting to cool with the cooling unit-mounted transport device disclosed in the above, it is necessary to provide a cooling unit-mounted transport device unique to each heavy machine, and it is easily imagined that the cost of temperature improvement measures will increase.

The present invention has been made in view of the above problems, and provides an in-tunnel temperature improvement system capable of effectively improving the in-tunnel temperature even when various heavy machines are scattered in the tunnel. The purpose is to do.

In order to achieve the above object, the in-tunnel temperature improving system according to the present invention includes a heat generation source, a refrigerant pipe arranged around the heat generation source, and a radiator that communicates fluid with the refrigerant pipe via the first flow path. , The refrigerant pipe and a heat exchanger for heavy machinery that communicates fluid through the second flow path are provided, the first switching valve is interposed in the first flow path, and the second switching valve is interposed in the second flow path. However, switching between the recirculation of the fluid between the refrigerant pipe and the radiator and the recirculation of the fluid between the refrigerant pipe and the heat exchanger for heavy machinery is executed by controlling the opening and closing of both switching valves. The heavy machinery used in the construction, the refrigerant supply source outside the wellhead of the tunnel, the heat medium room temperature tank outside the wellhead of the tunnel, and the refrigerant supply source and the heat exchanger for heavy machinery are connected to use the refrigerant as the refrigerant. The heat medium is transferred from the heavy machine compatible heat exchanger by directly or indirectly connecting the refrigerant supply path sent from the supply source to the heavy machine compatible heat exchanger, the heavy machine compatible heat exchanger, and the heat medium room temperature tank. It is equipped with a heat medium discharge path for sending to the room temperature medium temperature tank.

In the tunnel temperature improvement system of the present invention, each heavy machine that performs tunnel construction is one of its components, and each heavy machine is provided with a refrigerant pipe around the heat generation source, and further heats in addition to a normal radiator. One of the points is that it is equipped with a exchanger (heat exchanger for heavy machinery), and the refrigerant recirculation between the refrigerant pipe and the radiator and the refrigerant recirculation between the refrigerant pipe and the heat exchanger for heavy machinery can be switched freely. It has characteristics. Here, examples of the "heavy machine" include a jumbo, a wheel loader, a backhoe, a breaker truck, a dump truck, a sprayer, a truck mixer truck, a dust collector, and the like. In addition, examples of the "heat source" built into the heavy equipment include an engine, a motor, and a compressor. Further, the heat exchanger for heavy machinery may be mounted in the vicinity of the corresponding heavy machine, or the heat exchanger may be directly mounted on the corresponding heavy machine. Here, "directly or indirectly connecting the heat exchanger for heavy machinery and the heat medium room temperature tank" means that the heat exchanger for heavy machinery and the heat medium room temperature tank are directly connected by the heat medium discharge path. In addition to the form (direct), a separate heat exchanger or the like is interposed between the heat exchanger for heavy machinery and the heat medium room temperature tank, and the heat medium discharged from the heat exchanger for heavy machinery via the heat medium discharge path. Is meant to include a form (indirect) of returning to the refrigerant supply path again after being lowered to a desired temperature by this separate heat exchanger.

In these heat generation sources such as engines, motors, and compressors, a refrigerant pipe such as a water jacket is generally arranged around the heat source, and a refrigerant such as cold water is further provided between the radiator and the refrigerant pipe of the heavy machine. It is common to cool the heat when the heat source is driven by circulating the air, but if necessary, a refrigerant pipe may be installed around the heat source. For example, an air cooling method in which the refrigerant is air. In this case as well, a refrigerant pipe such as a water jacket is provided around the heat generation source. In the system of the present invention, the heavy machine is provided with a heat exchanger (heat exchanger for heavy machines) in addition to the radiator, and the refrigerant pipe and the radiator communicate the fluid through the first flow path having the first switching valve in the middle, and the refrigerant pipe. The heat exchanger for heavy machinery communicates fluid through the second flow path that has a second switching valve in the middle, and both during tunnel work and during non-work (when moving heavy machinery that is not working, etc.). The switching valve is configured to be switchable. Here, "both switching valves can be switched freely" means that one switching valve is open-controlled and the other switching valve is closed, respectively, in the working mode and the non-working mode.

Opening and closing control of the first switching valve and the second switching valve may be performed manually by an operator, or the heavy equipment may be equipped with a control unit and automatically controlled by this control unit. For example, in the latter case of automatic control, the heavy equipment is equipped with a control unit and a temperature sensor that senses the temperature around the heat source at any time, and the heavy equipment is certified as in the tunnel work mode when a certain temperature threshold is exceeded. Then, a switching signal is transmitted from the control unit to the switching valve, the second switching valve is opened and controlled, the first switching valve is closed, and the refrigerant supplied from the refrigerant supply source is passed through the heat exchanger for heavy machinery. It is provided to the refrigerant pipe around the heat source of the heavy equipment via the second flow path. The refrigerant flowing through the refrigerant pipe recovers heat from the heat generating source in the flow process, becomes a heat medium, and is sent to the heat exchanger for heavy machinery through the second flow path. In the heat exchanger for heavy machinery, the refrigerant from the refrigerant supply path recovers the heat of the heat medium in the second flow path. After that, it is sent to the heat medium room temperature tank through the heat medium discharge path.

When the heat medium is discharged into public water areas, the temperature should be 45 ° C or less, for example, according to the Ministry of the Environment's uniform drainage standards. Therefore, the heat medium sent to the heat medium room temperature normalization tank is brought to room temperature here to generate normal temperature water, and this normal temperature water is discharged to a public water area or the like. As described above, according to the system of the present invention, the heat generated from the heat generation source of each heavy machine is effectively recovered by the refrigerant flowing through the refrigerant pipe, so that a plurality of heavy machines are dispersed in the tunnel. Even when working, the inside of the tunnel can be maintained under a desired temperature environment.

Here, when a plurality of heavy machines are present in the tunnel, each heavy machine includes a supply branch pipe constituting the refrigerant supply path and a discharge branch pipe forming the heat medium discharge path, and the refrigerant supply path is provided. It can be mentioned that each supply branch pipe is branched from the supply main pipe constituting the above, and each discharge branch pipe is branched from the discharge main pipe constituting the heat medium discharge passage.

More specifically, the so-called reverse return method and direct return method can be applied. In the case of the reverse return method, the supply main pipe constituting the refrigerant supply path extends from the wellhead side to the face side, and the supply branch pipe unique to each heavy machine branched from the supply main pipe is connected to the heavy machine compatible heat exchanger of each heavy machine, and the refrigerant is used. Refrigerant is supplied in order from the heavy equipment on the wellhead side near the supply source, while the discharge main pipe constituting the heat medium discharge path extends from the heavy equipment on the wellhead side near the refrigerant supply source to the heavy equipment on the face side and reverses, and is outside the wellhead. The discharge branch pipe, which extends from the discharge main pipe and is unique to each heavy machine, is connected to the heavy machine compatible heat exchanger of each heavy machine, and the heat medium is discharged in order from the heavy machine on the wellhead side near the refrigerant supply source. It is a thing. On the other hand, in the case of the direct return method, the refrigerant supply has the same configuration as the reverse return method, while the heat medium is discharged in order from the heavy machine on the face side farthest from the refrigerant supply source. From the viewpoint of pressure balance, a reverse return method is preferable in which the pipe length is equal in the refrigerant supply system and the heat medium discharge system.

Here, the refrigerant supply source has various forms shown below, and the system configuration also differs depending on the form of the refrigerant supply source.

The first form of the refrigerant supply source is a form in which the refrigerant supply source comprises a device for supplying water containing no mud as a refrigerant.

This device can include a water tank containing fresh water and a pump that sends the water in the tank to the refrigerant supply path, and is a system that supplies fresh water (refrigerant) to the refrigerant supply path. .. The refrigerant may be simply supplied, but the temperature of the refrigerant provided in the tunnel may be adjusted as desired. Since the amount of heat generated changes depending on the type of heavy equipment and the number of heavy equipment working in the tunnel, the amount of heat generated is specified in advance for each type of heavy equipment, the number of heavy equipment, and the combination of multiple types of heavy equipment. It is also possible to set the fresh water temperature required for cooling the inside of the tunnel to the optimum temperature (in other words, suppressing the calorific value) and the amount of fresh water supplied per hour for each calorific value.

The second form of the refrigerant supply source includes a spring water flow path that carries the spring water in the tunnel to the outside of the wellhead or into the tunnel, and a settling septic tank that fluidly communicates with the spring water flow path. Then, the filtered water from which the mud in the spring water has been removed in the settling septic tank is sent as a refrigerant to the heat exchanger for heavy machinery via the refrigerant supply path.

The spring water that springs out into the tunnel is generally cold water, but because of the spring water, it probably contains mud, and if the spring water containing the mud is provided to the heat exchanger and the refrigerant pipe as it is, these devices will be clogged with mud. When spring water is applied as a refrigerant, the spring water is passed through a settling septic tank to remove mud, and the filtered water from which the mud has been removed is used as a refrigerant to supply the refrigerant. Send it to the heat exchanger for heavy machinery via the road. When the amount of spring water in the tunnel is large, it is preferable to effectively use this spring water, and the refrigerant supply source of the present embodiment is suitable.

Further, in the third form of the refrigerant supply source, the refrigerant supply source includes a spring water flow path that carries the spring water in the tunnel to the outside of the wellhead, a sedimentation septic tank that communicates with the spring water flow path, and the sedimentation septic tank and the fluid. It is composed of a wellhead outside heat exchanger that communicates with each other, and filtered water from which the mud in the spring water has been removed in the sedimentation septic tank is sent to the wellhead outside heat exchanger, and heat is sent through the heat medium discharge path. The medium is sent, and the heat medium is dissipated by the filtered water in the heat exchanger outside the wellhead to become a refrigerant, which is sent to the heat exchanger for heavy machinery via the refrigerant supply path and the heat medium discharge path. The filtered water whose temperature has risen by recovering the heat of the heat medium from the outside by the heat exchanger outside the wellhead is discharged to the heat medium room temperature chamber.

The refrigerant supply source of this form also applies spring water as a refrigerant in the same manner as in the second form, but in this third form, a heat exchanger outside the wellhead between the sedimentation septic tank and the heat medium room temperature tank. The filtered water and the heat medium discharged from the tunnel are circulated to the heat exchanger outside the wellhead, and the temperature of the heat medium is lowered in this flow process to regenerate the refrigerant, and the regenerated refrigerant is again a refrigerant. It is sent to a heat exchanger for heavy machinery via a supply path, and the filtered water is sent to a heat medium room temperature temperature tank and discharged.

As can be understood from the above description, according to the tunnel temperature improvement system of the present invention, the heat generated from the heat generation source of each heavy machine constituting the system is effectively recovered by the refrigerant flowing through the refrigerant pipe. As a result, even if the type of heavy machinery working in the tunnel, the number of heavy machinery, the combination of different types of heavy machinery, etc. are different, the temperature environment in the tunnel can be adjusted and maintained as desired.

It is a schematic diagram which showed Embodiment 1 of the temperature improvement system in a tunnel of this invention. It is a schematic diagram explaining the cooling system in a heavy machine. It is a schematic diagram which showed Embodiment 2 of the temperature improvement system in a tunnel of this invention. It is a schematic diagram which showed Embodiment 3 of the temperature improvement system in a tunnel of this invention.

Hereinafter, embodiments 1 to 3 of the tunnel temperature improving system of the present invention will be described with reference to the drawings. The illustrated example shows a state in which a dust collector, a truck mixer truck, and a sprayer are performing tunnel work in parallel in the tunnel as heavy machinery, and all of these three types of heavy machinery are components of the temperature improvement system in the tunnel. However, if only one heavy machine is doing tunnel work, this one heavy machine is a system component, and four or more heavy machines including other types of heavy machines are doing tunnel work in parallel. If so, all of these heavy equipment are system components.

(Embodiment 1 of the tunnel temperature improvement system)
FIG. 1 is a schematic view showing the first embodiment of the tunnel temperature improving system of the present invention, and FIG. 2 is a schematic view illustrating a cooling system in a heavy machine.

The illustrated tunnel temperature improvement system 10 is a system applied to the construction of the tunnel T in the mountain M, and consists of three types of heavy machinery 1 (dust collector 1A, truck mixer truck 1B, sprayer 1D) and the tunnel T. It is roughly composed of a refrigerant supply source 2 outside the wellhead S and a heat medium room temperature cooling tank 4. The dust collector 1A, the truck mixer truck 1B, and the sprayer 1D are all equipped with a radiator 1b and a heat exchanger 1a for heavy machinery. The heat exchanger 1a for heavy machinery may be mounted in the vicinity of a heavy machine such as a dust collector 1A, or may be mounted directly on the heavy machine, but the illustrated example shows a form in which the heat exchanger 1a is mounted on the heavy machine. Further, the illustration of the air supply duct arranged on the wellhead side in the tunnel T is omitted.

The refrigerant supply source 2 includes a spring water flow path 3a that carries the spring water that springs out in the tunnel T in the X1 direction to the outside of the wellhead S, and a sedimentation septic tank 3 that communicates with the spring water flow path 3a. Although not shown, the settling septic tank 3 has a built-in pump that sends out filtered water obtained by filtering mud from spring water.

The refrigerant supply path 5a (supply main pipe) extending from the settling septic tank 3 extends to the face side in the tunnel T, and the supply branch pipe 5b branched from the supply main pipe 5a communicates fluid with each heavy equipment heat exchanger 1a. On the other hand, the heat medium discharge passage 5d (discharge main pipe) extends from the dust collector 1A on the wellhead side near the refrigerant supply source 2 to the sprayer 1D on the face side, reverses, extends out of the wellhead, and branches from the discharge main pipe 5d. The discharged branch pipe 5c communicates fluidly with the heat exchanger 1a for heavy machinery 1A, 1B, and 1D.

Since the spring water that springs out in the tunnel T is cold water and contains mud inside, when applying the spring water as a refrigerant, the spring water that springs out in the tunnel T is X2 via the spring water flow path 3a. It is sent to the settling septic tank 3 in the direction, where the mud is removed, and the filtered water from which the mud has been removed is used as a refrigerant through the main supply pipe 5a (X3 direction) and through each supply branch pipe 5b (X4 direction). It is sent to the heat exchanger 1a for heavy machinery possessed by 1B and 1D. On the other hand, after the refrigerant sent to each heavy machine 1A, 1B, 1D recovers the heat generated from the heat generation source and becomes a heat medium, the heat medium is discharged in order from the dust collector 1A on the wellhead side closest to the refrigerant supply source 2. The heat medium is discharged to the discharge main pipe 5d via the branch pipe 5c (X5 direction), and the heat medium discharged from each discharge branch pipe 5c is sent to the heat medium normal temperature tank 4 via the discharge main pipe 5d (X6 direction).

Here, the cooling mechanism in the truck mixer truck 1B will be described with reference to FIG. The heat generation source 1c shown in the figure is an engine, and a large number of refrigerant pipes 1d (water jackets) are built in the engine 1c in advance, and the refrigerant pipes 1d communicate with each other in fluid. If the motor, compressor, etc., which is the heat generation source 1c, does not have an existing water jacket, or if a separate water jacket is added to the existing water jacket, a new water jacket is processed for these motors, etc. You can use the one. The truck mixer vehicle 1B is provided with a radiator 1b and a heat exchanger 1a for heavy machinery, and the refrigerant pipe 1d and the radiator 1b communicate with each other through a first flow path 1e having a first switching valve 1f in the middle, and are connected to the refrigerant pipe 1d. The heat exchanger 1a for heavy machinery communicates with the fluid via the second flow path 1g having the second switching valve 1h in the middle.

When the truck mixer truck 1B is in the tunnel work mode, the worker switches the second switching valve 1h to open and the first switching valve 1f to close, and the refrigerant (cold heat) supplied from the refrigerant supply source 2 is a heavy machine. It is provided to the refrigerant pipe 1d around the engine 1c of the truck mixer truck 1B via the corresponding heat exchanger 1a and the second flow path 1g. The refrigerant flowing through the refrigerant pipe 1d recovers heat from the engine 1c and becomes a heat medium in the flow process, and the heat medium transfers heat to the refrigerant supplied from the refrigerant supply source 2 via the heat exchanger 1a for heavy machinery. By doing so, the temperature is lowered. That is, in the tunnel work mode, the refrigerant and the heat medium return 1 g in the second flow path (Y2 direction). The temperature of the heat medium that has recovered the heat from the engine is lowered by dissipating heat to the refrigerant supplied from the refrigerant supply source 2 by the heat exchanger 1a for heavy machinery. The refrigerant from the refrigerant supply source 2 whose temperature has been raised by the heat exchanger 1a for heavy machinery is sent to the heat medium room temperature tank 4 via the discharge branch pipe 5c and the discharge main pipe 5d.

On the other hand, when the truck mixer vehicle 1B is in the tunnel non-working mode (in a state where no work is being performed), the worker switches the second switching valve 1h to closed and the first switching valve 1f to open, and the refrigerant is used. The refrigerant flowing through the pipe 1d recovers heat from the engine 1c and becomes a heat medium, and the heat medium flows through the first flow path 1e and is sent to the radiator 1b, where it is cooled and flows through the first flow path 1e as a refrigerant. It is sent to the pipe 1d. That is, in the tunnel non-working mode, the refrigerant and the heat medium return through the first flow path 1e (Y1 direction).

In this way, each heavy machine 1A is cooled by the refrigerant as needed while changing the cooling mode between the tunnel working mode and the tunnel non-working mode with the unique cooling system for each heavy machine 1A, 1B, 1D. , 1B, 1D can effectively prevent the heat radiated from the tunnel T from accumulating and the temperature inside the tunnel T from rising. Further, since only one supply main pipe 5a and one discharge main pipe 5d pass through the wellhead S, there is no problem that these pipes are complicated at the wellhead S. To exemplify the calorific value per unit for each heavy model, the calorific value of the jumbo used in the drilling work is 121 kW, and the calorific value of the wheel loader, backhoe, and breaker used in the sliding work is 121 kW, respectively. It is 122kW, 68kW, 103kW, the calorific value of the sprayer is 177kW, and the calorific value of the dust collector is 220kW.

As another form, a temperature sensor (not shown) is arranged in the vicinity of the engine 1c, the temperature of the engine 1c is sensed at any time by this temperature sensor, and the sensing data is transmitted to a control device (not shown). Can be mentioned. This control device stores a temperature threshold for the temperature of the engine 1c when the truck mixer truck 1B is in the tunnel work mode, and when the sensing data exceeds this temperature threshold, the truck mixer truck 1B is in the tunnel work mode. If it is below the temperature threshold, it is certified that the truck mixer truck 1B is in the tunnel non-working mode. Then, the opening / closing switching of the first switching valve 1f and the second switching valve 1h is automatically controlled for each of the tunnel working mode and the tunnel non-working mode.

After the heat medium is sent to the heat medium room temperature tank 4 in the X6 direction via the discharge main pipe 5d, in the heat medium room temperature tank 4, the temperature of the heat medium is lowered to, for example, 45 ° C. or lower, and the temperature of the heat medium is lowered. Is discharged to public water areas in the X7 direction.

(Embodiment 2 of the temperature improvement system in the tunnel)
FIG. 3 is a schematic view showing the second embodiment of the temperature improvement system in the tunnel of the present invention. The illustrated tunnel temperature improvement system 10A is composed of a spring water flow path 3a, a sedimentation septic tank 3 that communicates with the spring water flow path 3a, and an external heat exchanger 6 that communicates with the sedimentation septic tank 3 on the outside of the wellhead S. It includes a configured refrigerant supply source 2A.

The spring water flowing through the spring water flow path 3a in the X2 direction is sent to the settling septic tank 3, and further sent to the wellhead outside heat exchanger 6 in the X8 direction. On the other hand, in the tunnel work mode, the heat medium discharged from each of the heavy machines 1A, 1B, 1D is sent to the wellhead outside heat exchanger 6 in the X6 direction via the discharge main pipe 5d. In the wellhead outside heat exchanger 6, the heat medium from the discharge main pipe 5d is cooled and regenerated by heat exchange with the spring water (cold water) from the settling septic tank, and the regenerated refrigerant is again passed through the supply main pipe 5a to each heavy machine 1A. , 1B, 1D. On the other hand, the heat medium is regenerated into a refrigerant, and the spring water whose temperature has risen is sent to the heat medium room temperature tank 4 in the X9 direction, and after the temperature is lowered to 45 ° C. or lower, the heat medium whose temperature has dropped is for public use in the X7 direction. It is released to water areas.

(Embodiment 3 of the tunnel temperature improvement system)
FIG. 4 is a schematic view showing the third embodiment of the temperature improvement system in the tunnel of the present invention. The illustrated tunnel temperature improvement system 10B is a modification of the refrigerant supply source 2 of the tunnel temperature improvement system 10 shown in FIG. 1, and here, instead of filtering the spring water that springs out from the tunnel with a sedimentation septic tank. , A refrigerant supply source composed of a fresh water tank 7 that stores fresh water (including tap water) as a refrigerant and a pump 8 that sends the fresh water (refrigerant) in the fresh water tank 7 to the heat exchanger 1a for heavy machinery of the dust collector 1A. It is equipped with 2B.

This form is based on a water supply system in which fresh water is supplied to each heavy machine 1A and the like, and a refrigerant supply source 2B composed of a fresh water tank 7 and a pump 8 is compared with a sedimentation septic tank that filters mud from spring water. Is extremely simple in configuration.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like within a range that does not deviate from the gist of the present invention. Also, they are included in the present invention.

1 ... Heavy machine, 1A ... Heavy machine (dust collector), 1B ... Heavy machine (truck mixer car), 1D ... Heavy machine (sprayer), 1a ... Heavy machine compatible heat exchanger, 1b ... Radiator, 1c ... Heat source (engine), 1d ... Refrigerant piping (water jacket), 1e ... 1st flow path, 1f ... 1st switching valve, 1g ... 2nd flow path, 1h ... 2nd switching valve, 1j ... temperature sensor, 1k ... control device, 2,2A, 2B ... Refrigerant supply source, 3 ... Sedimentation septic tank, 3a ... Spring water flow path, 4 ... Heat medium room temperature tank, 5a ... Refrigerant supply path (supply main pipe), 5b ... Refrigerant supply path (supply branch pipe), 5c ... Heat medium discharge path (Discharge branch pipe), 5d ... Heat refrigerant discharge path (Discharge main pipe), 6 ... Outer well heat exchanger, 7 ... Fresh water tank, 8 ... Pump, 10, 10A, 10B ... Tunnel temperature improvement system, M ... Mountain, T ... tunnel, F ... face, S ... wellhead

Claims (5)

Compatible with heat generation sources, refrigerant pipes arranged around the heat generation source, radiators that communicate fluids with the refrigerant pipes via the first flow path, and heavy machinery that communicates fluids through the refrigerant pipes and the second flow path. A heat exchanger is provided, the first switching valve is interposed in the first flow path, the second switching valve is interposed in the second flow path, and the opening / closing control of both switching valves is controlled between the refrigerant pipe and the radiator. Heavy machinery used in tunnel construction, which is designed to switch between fluid recirculation and fluid recirculation between the refrigerant piping and the heat exchanger for heavy machinery.
The refrigerant supply source outside the tunnel entrance and
The heat medium room temperature tank on the outside of the tunnel entrance,
A refrigerant supply path that connects the refrigerant supply source and the heat exchanger for heavy machinery and sends the refrigerant from the refrigerant supply source to the heat exchanger for heavy machinery.
It is provided with a heat medium discharge path for directly or indirectly connecting the heat exchanger for heavy machinery and the heat medium room temperature tank to send a heat medium from the heavy machine compatible heat exchanger to the heat medium room temperature tank. , Temperature improvement system in the tunnel. The temperature improving system in a tunnel according to claim 1, wherein the refrigerant supply source is a device that supplies water containing no mud as a refrigerant. The refrigerant supply source is composed of a spring water flow path that carries the spring water in the tunnel to the outside of the wellhead and a sedimentation septic tank that communicates the fluid with the spring water flow path.
The temperature improving system in a tunnel according to claim 1, wherein the filtered water from which the mud in the spring water has been removed in the settling septic tank is sent as a refrigerant to the heat exchanger for heavy machinery via the refrigerant supply path. The refrigerant supply source is composed of a spring water flow path that carries the spring water in the tunnel to the outside of the wellhead, a sedimentation septic tank that communicates with the spring water flow path in fluid communication, and a heat exchanger outside the wellhead that communicates with the sedimentation septic tank. ,
Filtered water from which the mud in the spring water has been removed in the settling septic tank is sent to the heat exchanger outside the wellhead, and a heat medium is sent through the heat medium discharge path.
In the heat exchanger outside the wellhead, the heat medium dissipates heat with the filtered water to become a refrigerant, which is sent to the heat exchanger for heavy machinery via the refrigerant supply path and the heat medium from the heat medium discharge path. The in-tunnel temperature improving system according to claim 1, wherein the filtered water whose temperature has risen by recovering heat by the heat exchanger outside the wellhead is discharged to the heat medium room temperature room temperature tank. There are a plurality of the heavy machines, and each heavy machine includes a supply branch pipe forming the refrigerant supply path and a discharge branch pipe forming the heat medium discharge line, and each of the heavy machines is supplied from a supply main pipe forming the refrigerant supply path. The in-tunnel temperature improving system according to any one of claims 1 to 4, wherein the branch pipes are branched and each discharge branch pipe is branched from the discharge main pipe constituting the heat medium discharge path.

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