JP6949613B2 - Cooling system, cooling method - Google Patents

Description

The present invention relates to a cooling system and a cooling method.

When excavation work is carried out in a tunnel mine, various measures are taken to improve the working environment in the mine. In particular, in the hot dry rock section, the environment is hot and humid, so it is important to prepare a good environment for the workers. As described above, as the equipment for supporting the workers who work in the high heat work environment, the following can be mentioned.
1) Wearable cooling suit 1-1) Cooling gel wearing type There is a cooling suit that wears the cooled gel on the vest. However, the problem with this cooling gel-mounted type cooling suit is that the duration of the effect of the cooling gel is short (for example, about 30 minutes), and when working for a long time, the cooling gel must be replaced frequently. Then, when replacing the cooling gel, it is necessary to suspend the work, and the work efficiency is lowered.
1-2) Cooling water circulation type There is a cooling suit that puts ice in a water tank and circulates ice-cooled water in a pipe equipped with a vest. The problem with this cooling suit is that once all the ice in the water tank has thawed, the effect is lost and the duration of the effect is limited (for example, the cooling effect is only about 45 minutes). In addition, the vest is equipped with a circulation pump device, which makes it unsuitable for work with heavy movement.
1-3) Compressed air cooling type There is a cooling suit that blows cold air created by passing compressed air through a special nozzle into the inside of a full-face helmet and the inside of a vest. The problem with this cooling suit is that the hose that supplies the compressed air is always connected to the worker's body, limiting the working range. Further, the compressor that produces compressed air overheats in a high temperature environment (for example, the cooling effect lasts for only about 45 minutes), which is not suitable for long-time work.

2) Break room equipped with air-cooled air conditioner A closed space is created in the mine, and the inside is cooled by a general air-cooled air conditioner to serve as a break room, where workers take turns regularly (for example, about 15 minutes). There is a method of taking a break and continuing the work. The problem with this method is that in a high temperature environment, the compressor of the cooling device main body cannot continue operation due to overheating in a short period of time.

3) Stationary water-cooled cooling equipment This is a method in which a stationary water-cooled cooling equipment with a large cooling capacity is installed in the mine to cool the entire mine (about 200 m in the tunnel extension direction). The problem with this method is that in a small cross-section tunnel with an inner diameter of about 5 m, the cooling device obstructs the passage of vehicles toward the tunnel tip side, and the work at the tunnel tip is restricted. The reason for this is that the large-capacity cooling equipment for cooling the entire mine requires a large amount of cooling water in addition to the large size of the equipment itself, and when connected to the water supply pipe with a hose, the cooling equipment cannot be moved from the installation location. Because. In addition, since it is necessary to branch from the air supply duct and draw fresh air outside the tunnel into the cooling equipment, there is also a problem that the amount of air supply air at the tip of the tunnel is reduced.

As such a stationary water-cooled cooling facility, for example, there is a cooling device described in Patent Document 1.

Japanese Unexamined Patent Publication No. 2010-229698

However, the cooling device shown in Patent Document 1 requires a large amount of cooling water as in the above-mentioned "stationary water-cooled cooling facility", and when a storage tank or the like is connected to the water supply pipe, the cooling device can be moved from the installation location. I can't move. Therefore, if the work place due to the face advances in the tunnel mine due to the progress of excavation work, or if the place where maintenance work is performed is changed, cooling cannot be performed.

The present invention has been made in view of such circumstances, and an object of the present invention is to flexibly cope with a change in the cooling place in the tunnel mine, and to extend the duration of the cooling operation. The purpose is to provide a system and a cooling method.

In order to solve the above-mentioned problems, the present invention is a vehicle provided in the mine and capable of traveling in the mine from any of a plurality of supply ports provided at predetermined intervals for cooling water supplied from outside the mine. The vehicle has a pipe for supplying the cooling equipment and a pump provided outside the mine to supply cooling water to the pipe, and the vehicle is a human vehicle for carrying a worker or a first vehicle for carrying materials. It is composed of a second vehicle equipped with a cooling water tank and a generator.
Further, the present invention is a pipe that supplies cooling water supplied from outside the mine to a cooling facility for a vehicle that can travel in the mine from any of a plurality of supply ports provided at predetermined intervals. And, the pump installed outside the mine and supplying cooling water to the pipe, and the comfort inside the vehicle are judged step by step, and the output of the air conditioner by artificial intelligence from the combination of temperature / humidity, air conditioning air volume, and number of people entering the room. It has a control unit for selecting .

Further, in the above-mentioned cooling system, the underground vehicle is provided with a cooling water tank, and the cooling water in the cooling water tank is supplied to the heat exchanger by a pump.
Further, according to the present invention, in the above-mentioned cooling system, the interval at which the supply ports are provided is within 200 m.
Further, according to the present invention, in the above-mentioned cooling system, the underground vehicle is composed of a first vehicle equipped with a human vehicle or a material for carrying a worker, and a second vehicle equipped with a cooling water tank and a generator. ing.
Further, in the above-mentioned cooling system, the present invention has a control unit that determines the comfort inside the underground vehicle in stages and selects the output of the air conditioner by artificial intelligence from the combination of temperature / humidity, air conditioning air volume, and number of people entering the room. ..
Further, according to the present invention, in the above-mentioned cooling system, the underground vehicle is used in tunnel excavation work.

Further, the present invention is a cooling facility for a vehicle capable of traveling in the mine from any of a plurality of supply ports provided at predetermined intervals for cooling water supplied from outside the mine among the pipes provided in the mine. The cooling water is supplied to the pipe from the pump provided outside the mine , and the vehicle is equipped with a human vehicle for carrying a worker or a first vehicle for carrying materials, a cooling water tank, and a generator. It is composed of the second vehicle and the second vehicle.
Further, the present invention is a cooling facility for a vehicle capable of traveling in the mine from any of a plurality of supply ports provided at predetermined intervals for cooling water supplied from outside the mine among the pipes provided in the mine. The cooling water is supplied to the pipe from the pump provided outside the mine, and the control unit judges the comfort inside the vehicle in stages, and from the combination of temperature / humidity, air conditioning air volume, and number of people entering the room. Select the output of the air conditioner by artificial intelligence .

As described above, according to the present invention, a plurality of supply ports provided at predetermined intervals are provided for the pipes provided in the mine, and one of the plurality of supply ports is provided in the mine. Cooling water is supplied to the vehicle cooling equipment. As a result, even if the cooling location in the tunnel mine changes, it is possible to flexibly respond and the duration of the cooling operation can be extended.

It is a schematic block diagram which shows the structure of the cooling system by one Embodiment of this invention. It is a figure which shows the appearance of a human vehicle 140. It is a schematic view which looked at the depth direction in the inside of a human vehicle 140. It is a figure which shows an example of the tunnel pit which introduces a cooling system 1. It is a figure which shows an example of the tunnel pit which introduces a cooling system 1.

Hereinafter, a cooling system according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing a configuration of a cooling system according to an embodiment of the present invention.
The cooling system 1 cools the inside of a human vehicle carrying passengers in the tunnel mine 2, a vehicle mine locomotive carrying materials, a vehicle equipped with a cooling water tank and a generator, and the like. Various works are carried out in the tunnel mine 2, for example, a tunnel excavation work is carried out.
In the cooling system 1, the cooling system 1 is composed of a cooling tower 10, an offshore water supply pump 20, a turbid water treatment facility 30, a pipe 40, an invert drainage ditch 45, and a vehicle 50.
The cooling tower 10 is provided outside the mine and dissipates the heat of the cooling water. The cooling water used for the cooling tower 10 is supplied from a river or reuses the cooling water once it has been used.

The off-mine water supply pump 20 is provided outside the mine and pumps the cooling water from which the heat is dissipated in the cooling tower 10 to the pipe 40.
The pipe 40 is provided in the tunnel underground 2, and supplies cooling water supplied from outside the tunnel to the cooling equipment of the underground vehicle from any of a plurality of supply ports 41 provided at predetermined intervals. The pipe 40 extends from the wellhead 3 to a place excavated by the face 4 for excavating the tunnel in the tunnel mine 2. For example, the pipe 40 is extended along the track on which the vehicle 50 moves. The pipe 40 is provided with a heat insulating material 42, and is heat-insulated so as not to be easily affected by heat from the tunnel pit 2. Further, a plurality of supply ports 41 are provided in this pipe. The supply port 41 is provided with a supply port 41a, a supply port 41b, a supply port 41c, and a supply port 41d at predetermined intervals in the extension direction. Hereinafter, when the supply port 41a, the supply port 41b, the supply port 41c, and the supply port 41d are not identified, they may be simply referred to as the supply port 41. The predetermined interval can be arbitrarily set, but for example, the interval at which the supply port 41 is provided is set to about 200 m, or is set within 200 m.

The vehicle 50 can travel along a rail provided in the tunnel mine 2 by connecting a flat trolley 120, an underground locomotive 130, and a human vehicle 140.
The flat trolley 120 is equipped with a generator 121 and a cooling water tank 122. The generator 121 supplies the generated electric power to each part of the vehicle (for example, the underground locomotive 130 and the human vehicle 140).
The cooling water tank 122 stores the cooling water supplied from any of the supply ports 41. When the vehicle 50 moves, the cooling water tank 122 receives the supply of cooling water from the supply port 41 which is the closest to the moving destination. For example, a hose is connected to the supply port 41, and this hose is extended to the water supply port of the cooling water tank 122, the valve provided in the supply port 41 is manually opened, and the cooling water supplied from the supply port 41 is supplied. , Can be supplied to the cooling water tank 122 via a hose. Therefore, regardless of whether the vehicle 50 is located near the wellhead 3 or the face 4, the cooling water can be supplied from any of the supply ports 41 at the destination of the vehicle 50.
The cooling water tank 122 is provided with a cooling water pump 123, and supplies cooling water to the cooling devices 100 (cooling device 100a, cooling device 100b, cooling device 100c) of the underground locomotive 130 and the human vehicle 140.

The underground locomotive 130 is provided with a driver's cab 131 inside the vehicle and a cooling device 100a outside the vehicle. The cooling device 100a has a heat exchanger 101 and a compressor 102 inside, and supplies cold air into the operating cab 131 by a blower 132 provided in the operating cab 131. The cooling device 100a can be continuously cooled by exchanging heat with a heat exchanger using the cooling water supplied from the cooling water pump 123 of the cooling water tank 122. The heat exchanger 101 cools the refrigerant gas with cooling water. The blower 132 blows low-temperature air generated by vaporizing the refrigerant gas cooled by the heat exchanger 101 in the evaporator into the operation cab 131.

The human vehicle 140 has a space in which workers and materials can be stored, and a blower 142 and a blower 143 are provided in the vehicle, and a cooling device 100b and a cooling device 100c are provided outside the vehicle. Be done. The cooling device 100b has a heat exchanger and a compressor inside, and supplies cold air into the human vehicle 140 by a blower 142 provided in the human vehicle 140. The cooling device 100b can be continuously cooled by exchanging heat with a heat exchanger using the cooling water supplied from the cooling water pump 123 of the cooling water tank 122.
Further, the cooling device 100b has a heat exchanger and a compressor inside like the cooling device 100b, and supplies cold air into the human vehicle 140 by a blower 143 provided in the human vehicle 140. The cooling device 100c can be continuously cooled by exchanging heat with a heat exchanger using the cooling water supplied from the cooling water pump 123 of the cooling water tank 122.

The cooling device 100a, the cooling device 100b, and the cooling device 100c drain the cooling water whose temperature has risen after heat exchange to the invert drainage ditch 45 provided in the mine.
The invert drainage ditch 45 is provided in the tunnel pit 2, and supplies the cooling water drained from the cooling device 100 in the tunnel pit 2 to the cooling tower 10. The invert drainage ditch 45 extends along the track of the pipe 40 or the vehicle 50.
The underground pot 60 temporarily stores the cooling water introduced from the invert drainage ditch 45. The underground drainage pump 61 supplies the cooling water stored in the underground pot 60 to the turbid water treatment facility 30 via a pipe connected between the storage in the underground pot 60 and the turbid water treatment facility 30.
The turbid water treatment facility 30 purifies the cooling water supplied from the underground kettle 60 so as to reach a standard at which it can be discharged into a river or the like. The turbid water treatment facility 30 discharges a part of the purified cooling water to the river and supplies the remaining part to the cooling tower 10 for reuse.

FIG. 2 is a diagram showing the appearance of the human vehicle 140. A window 200 is provided on the side surface of the human vehicle 140. For example, a transparent acrylic panel is used for the window 200, so that the inside of the human vehicle 140 can be visually recognized from the inside of the vehicle and the inside of the vehicle from the outside, and a certain degree of airtightness is ensured.
The entrance 205 is provided with a door so that workers can get on and off. By closing this door when not getting on and off, a certain degree of airtightness can be ensured.
The cooling water pipe 210 is connected to the cooling water tank 122, the cooling device 100b, and the cooling device 100c, and supplies the cooling water stored in the cooling water tank 122 to the cooling device 100b and the cooling device 100c.

FIG. 3 is a schematic view of the inside of the human vehicle 140 in the depth direction. Seats 250 and 260 are provided in the human vehicle 140 so that workers can be seated. The number of people that can be seated in the seats 250 and 260 varies depending on the size of the passenger car 140 and the size of the seats 250 and 260, but a plurality of workers can be seated.
Further, a blower 142 (143) is provided inside the human vehicle 140, and the inside of the human vehicle 140 is cooled by blowing cold air into the human vehicle 140.

Next, the operation of the cooling system 1 described above will be described.
The water-cooled cooling device 100a described above is provided in the underground locomotive 130, the cooling devices 100b and 100c are provided in the human vehicle 140, and the inside of the vehicle is cooled to lower the temperature inside the vehicle compared to the temperature inside the tunnel 2. In this state, workers can be transported and drivers can be operated, and it can be used as a resting place for maintenance and inspection work in the middle of the tunnel mine 2.
After the vehicle 50 is stopped in the vicinity of the wellhead 3, the driver gets on the driver's cab 131 and the worker gets on the human vehicle 140. Then, according to the driver's driving operation, the vehicle 50 travels to the place where the work in the tunnel mine 2 is performed. At this time, the underground locomotive 130 is connected to the human vehicle 140 and the flat trolley 120, and is towed by the underground locomotive 130. Then, when cooling is required, the cooling operation of each cooling device 100 in the underground locomotive 130 and the human vehicle 140 is performed to cool the inside of the vehicle. As the vehicle 50, since the flat trolley 120 equipped with the generator 121 and the cooling water tank 122 is towed to the underground locomotive 130 and the human vehicle 140, electric power is supplied while the vehicle 50 is moving or at the destination. You can use the cooling water while receiving it. Therefore, in the cooling operation of the cooling device 100, the power is received from the generator 121 and the cooling water is supplied from the cooling water tank 122 by the cooling water pump 123 regardless of whether the vehicle 50 is running or stopped. By being supplied, the cooling operation can be performed.

When the temperature of the cooling water rises to a certain temperature due to the cooling operation, the cooling device 100 cannot lower the temperature of the refrigerant gas, so that the cooling device 100 drains water from a predetermined drain port to the invert drain ditch 45. The cooling water drained to the invert drainage ditch 45 is stored in the underground pot 60 and then sent to the muddy water treatment facility 30 by the underground drainage pump 61. As a result, the cooling water used in the cooling device 100 is partially purified and then drained into the river, and the remaining part is returned to the cooling tower 10 for reuse.

On the other hand, when the cooling operation is performed for a long time, the cooling water stored in the cooling water tank 122 decreases. Then, when the remaining amount of the cooling water in the cooling water tank 122 reaches a certain value or less, the cooling water tank 122 is supplied with the cooling water from the supply port 41 of the pipe 40 to replenish the cooling water. Here, a plurality of supply ports 41 are provided on the pipe 40 at regular intervals. Therefore, for example, when it becomes necessary to receive replenishment, the vehicle 50 is driven to the nearest supply port 41 among the plurality of supply ports 41, and the cooling water is replenished from the supply port 41 to the cooling water tank 122. In this way, the pipe 40 is laid in the tunnel mine 2, and a plurality of supply ports 41 are provided at intervals. Therefore, the place where the cooling water can be replenished is set every 100 m or 200 m in the mine. Since the cooling water can be replenished from any of the supply ports 41 by providing the cooling water at intervals such as, the cooling device can be continuously operated for a long time.

Here, if the cooling water is replenished once, each cooling device can be continuously operated for about 1 hour. Then, when the remaining amount of the cooling water in the cooling water tank 122 reaches a certain value or less, the cooling water is replenished from the nearest supply port 41 again.

The vehicle 50 equipped with such a water-cooled air conditioner can be used as a resting place for maintenance and inspection work in the tunnel in the middle of the tunnel, in addition to transporting personnel to the face 4 in the tunnel 2. Since the underground maintenance and inspection work is performed in a high temperature environment, it is possible to divide the work into multiple groups and take turns while taking breaks in order.

In the above-described embodiment, the vehicle 50 may be provided for each work area in the tunnel mine 2. When the tunnel pit 2 is extended, the pipe 40 and the invert drainage ditch 45 may also be expanded so as to extend along the tunnel pit 2. Further, two or more human vehicles 140 may be provided in one vehicle.
Further, although a plurality of supply ports 41 are provided at a certain interval, the distance between the supply port 41 and the adjacent supply port 41 may be a constant distance, or may be provided corresponding to the area where the work is performed. You may do it.

Next, an example using the above-mentioned cooling system 1 will be described.
FIG. 4 is a diagram showing an example of a tunnel pit into which the cooling system 1 is introduced. This tunnel pit can be roughly divided into three sections, a section 300 which is a section from the wellhead on the starting point side to a certain place, a section 310 which is a section from the wellhead on the ending point side to a certain place, and a section 300. There is a section 310 which is a section between the section 310 and the section 310. Hot dry rock geothermal body 350 exists in the section 310. In the section where such a hot dry rock body 350 exists, for example, there is a terrain in which the rock mass temperature is 55 ° C. at the maximum and the section where the rock mass temperature is 50 ° C. or higher continues for several km. In such a section, the maximum underground temperature is 43 ° C. or higher and the humidity is as high as 100%, which can create a very severe underground environment for workers.
If the above-mentioned cooling system 1 is not introduced, the surrounding environment will become hot when the tunnel excavation hits the hot dry rock section, so the worker will pass through this hot dry rock section and be used as a face work place. It will be difficult to even deliver it. On the other hand, by introducing the above-mentioned cooling system 1, it is possible to provide a good environment for workers who perform various operations in the tunnel mine, and by using the inside of the vehicle having a cooling environment, a break can be taken as appropriate. It can be taken and work efficiency can be improved. As a result, it is possible to suppress a decrease in the progress of excavation even in a section where a hot dry rock body exists.

Further, by utilizing the vehicle used in the tunnel mine 2, the generator 121 and the cooling water tank 122 were mounted on the flat trolley 120 so as to be towed together with the mine locomotive 130 or the human vehicle 140. Since the flat locomotive 120 can be moved as the vehicle moves, the cooling system does not obstruct the passage of the vehicle.
Further, since the cooling water can be supplied from the supply port 41 at an arbitrary position via the pipe 40 as needed, the limitation of the place where the cooling can be performed is relaxed, and the duration of the cooling is conventionally extended. It can be made longer than that.

Next, the control of the cooling system 1 described above will be described.
The cooling system 1 may be equipped with air conditioning output control using deep learning of artificial intelligence.
FIG. 5 is a schematic block diagram showing the configuration of the air conditioning output control device. This air conditioning output device can be mounted on, for example, the cooling device 100 of the cooling system 1.
This air-conditioning output device controls the air-conditioning output by analyzing the input of indoor comfort by the IoT (Internet of Things) sensor group using a multi-layer (three-layer) neural network. This air conditioning output device judges the comfort inside the underground vehicle in stages, and selects the output of the air conditioner by artificial intelligence from the combination of temperature / humidity, air conditioning air volume, and number of people entering the room.
Here, it is constructed as a three-layer neural network of an input layer 500, an intermediate layer 510, and an output layer 520. As input values, the input layer 500 is input with values representing the environment inside the vehicle, such as "cold", "comfortable", "sweaty", and "let's be conscious". This input may be input as teacher data by a worker from a predetermined input device (button or the like).
The intermediate layer 510 can be configured as, for example, a three-layer deep neural network. In the first layer, the temperature and humidity obtained from a sensor provided in the vehicle, and in the second layer, a blower in the cooling device 100. The air-conditioning air volume of the above, and the number of people entering the room are used in the third layer. The number of people entering the room may be determined by analyzing the thermographic temperature distribution data obtained from the thermo camera provided in the vehicle.
The output layer 520 determines the air conditioning output. For example, the air conditioning output is selected from "high" (up), "medium" (maintenance), and "low" (down). The output of the output layer 520 is output to the cooling device 100 and also to the emotion engine 530. The emotion engine evaluates the control results as "hot", "comfortable", "cold", "unpleasant", etc., and continuously performs deep learning of the air conditioning output control device using artificial intelligence to control the air conditioning. The accuracy can be improved.
Since the standard of comfort level differs depending on the work content and the individual, it is possible to perform air conditioning control corresponding to the standard. In addition, this air conditioning control can also be applied to air conditioning control of a general indoor space.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs and the like within a range that does not deviate from the gist of the present invention.

1 Cooling system 2 Under the tunnel 10 Cooling tower 20 Outside the mine water supply pump 30 Muddy water treatment equipment 40 Piping 41, 41a, 41b, 41c, 41d Supply port 42 Insulation material 45 Invert drainage ditch 50 Vehicle 60 Underground Kamaba 61 Underground drainage pump 100, 100a , 100b, 100c Cooling device 101 Heat exchanger 102 Compressor 120 Flat trolley 121 Generator 122 Cooling water tank 123 Cooling water pump 130 Underground locomotive 131 Driver's cab 132, 142, 143 Blower 140 Man car 200 Window 205 Entrance / exit 210 Cooling water piping 250, 260 seats 350 Hot rock body 300, 310, 320 Section 500 Input layer 510 Intermediate layer 520 Output layer 530 Emotion engine

Claims (9)

Piping that supplies cooling water supplied from outside the mine to the cooling equipment of a vehicle that can travel inside the mine from any of a plurality of supply ports provided at predetermined intervals.
It has a pump provided outside the mine and supplies cooling water to the pipe.
The vehicle is a cooling system including a first vehicle on which a human vehicle or a material on which a worker is mounted, and a second vehicle on which a cooling water tank and a generator are mounted. Piping that supplies cooling water supplied from outside the mine to the cooling equipment of a vehicle that can travel inside the mine from any of a plurality of supply ports provided at predetermined intervals.
A pump provided outside the mine to supply cooling water to the pipe,
A cooling system having a control unit that determines the comfort in the vehicle in stages and selects the output of the air conditioner by artificial intelligence from the combination of temperature / humidity, air conditioning air volume, and number of people entering the room. The vehicle comprises a cooling water tank, it supplied to the heat exchanger by the cooling water in the cooling water tank pump
The cooling system according to claim 1 or 2. The cooling system according to any one of claims 1 to 3, wherein the distance between the supply ports is 200 m or less. The vehicle is any one of claims 2 to 4 , which is composed of a first vehicle equipped with a human vehicle or a material for carrying a worker, and a second vehicle equipped with a cooling water tank and a generator. The cooling system according to item 1. Claims 1 and 3 to 5 have a control unit that determines the comfort in the vehicle in stages and selects the output of the air conditioner by artificial intelligence from the combination of temperature / humidity, air conditioning air volume, and number of people entering the room. The cooling system according to any one of the above. The cooling system according to any one of claims 1 to 6 , wherein the vehicle is used in tunnel excavation work. Of the pipes installed in the mine, cooling water supplied from outside the mine is supplied to the cooling equipment of vehicles that can travel in the mine from any of a plurality of supply ports provided at predetermined intervals.
Cooling water is supplied to the pipe from a pump provided outside the mine.
The vehicle is a cooling method including a first vehicle equipped with a human vehicle or a material for carrying a worker, and a second vehicle equipped with a cooling water tank and a generator. Of the pipes installed in the mine, cooling water supplied from outside the mine is supplied to the cooling equipment of vehicles that can travel in the mine from any of a plurality of supply ports provided at predetermined intervals.
Cooling water is supplied to the pipe from a pump provided outside the mine.
A cooling method in which the control unit determines the comfort in the vehicle in stages and selects the output of the air conditioner by artificial intelligence from the combination of temperature / humidity, air conditioning air volume, and number of people entering the room.

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