CN221879472U - Automatic refrigerating system of mine local air-compression type air conditioner - Google Patents

Abstract

The utility model discloses an automatic refrigerating system of a mine local air-compression type air conditioner, which comprises an air conditioning chamber and a fan chamber which are arranged on a ventilation path of a tunneling roadway, wherein a refrigerating device is arranged in the air conditioning chamber; therefore, the flexible and adjustable characteristics of the air supply air duct are utilized, the cool air generated by the evaporator is conveyed to the tunneling working area, the length and the position of the air supply air duct are conveniently and timely adjusted according to the propulsion of the tunneling working area, the tunneling working face is cooled, the cooling effect is good, the cost is low, the hot air generated by the compression refrigeration assembly is carried out from the dirty air return tunnel by utilizing the air flow of the ventilation path of the tunneling tunnel, and the cool air is discharged to the ground surface from the return air well.

Description

Local air compression air conditioning automatic refrigeration system in mines

Technical Field

The utility model relates to the technical field of mine cooling, in particular to a local air compression type air conditioning automatic refrigeration system for a mine.

Background Art

In the mining work, the thermal environment of underground excavation has exceeded the standard, which poses a risk to the life and health of workers, and cooling or protective measures should be taken immediately. However, when the mine is in the shallow mining stage, the mine mechanical refrigeration system has not been built during the mine production and construction period. The mine usually adopts enhanced ventilation to cool the mine, and at the same time takes into account: 1) The construction of a mine-wide mine mechanical refrigeration system is expensive and takes a long time to build; 2) The mine is rich in low-temperature groundwater, and the water temperature in the pump room can reach 24°C, but the construction cost of the water transportation system is high and the time is long; 3) The dry bulb air temperature on the fresh air inlet side of the air supply lane is as low as 28.8°C, and it is difficult to reduce the air temperature of the excavation lane to below 28°C by strengthening ventilation and cooling. In addition, for continuous inward excavation, strengthening ventilation makes ventilation expensive and the ventilation machinery is seriously worn out; 4) The excavation of the main transport lane is not a long-term operation plan, and the economy of arranging cooling measures should be considered. It is urgent to design a set of underground refrigeration systems with low construction cost and good cooling effect.

The utility model patent with patent number CN202121870901.8 discloses a water curtain cooling device for the underground coal mine excavation working face, which sprays water through the cooperation of a water pump, a pump, a drainage pipe and a nozzle to form a water curtain to cool the excavation working face. This cooling method will form a large amount of sewage on the excavation working face, which is not conducive to the progress of excavation work, and its cooling effect is poor and the cooling efficiency is low.

The utility model patent with the patent number CN202321716813.1 discloses a refrigeration device for high-gas coal mines, including at least one hydraulic fan, at least one cooler, a refrigeration main unit, and an evaporator. The hydraulic fan and the cooler are arranged in the return air lane of the mine, and the refrigeration main unit and the evaporator are arranged in the mine excavation lane. In the above scheme, the evaporator is arranged in the mine excavation lane, and the evaporator exchanges heat with the overall air in the excavation lane. This heat exchange method easily causes a large amount of cold air to be directly carried to the return air shaft by the return dirty air, which not only has a poor cooling effect, but also easily causes energy waste. At the same time, the evaporator cannot change its position with the advancement of the excavation face, so it has a poor cooling effect in the excavation working area.

Based on this, it is urgent to provide a mine local air compression air conditioning automatic refrigeration system with low cost and good cooling effect.

Utility Model Content

In order to overcome the deficiencies of the prior art, the utility model provides a local air compression air conditioning automatic refrigeration system for a mine, which has low cost and can conveniently and timely adjust the length and position of the air supply duct according to the advancement of the excavation work area, and has a good cooling effect.

In order to solve the above technical problems, the technical solution adopted by the utility model is: to provide a local air compression air-conditioning automatic refrigeration system for a mine, which includes an air-conditioning chamber and a fan chamber arranged on the ventilation path of the excavation tunnel, and a refrigeration device is provided in the air-conditioning chamber, wherein the compression refrigeration component of the refrigeration device is arranged in the air-conditioning chamber, and the evaporator of the refrigeration device is arranged in the fan chamber through a cold transport pipe, and the air supply duct in the fan chamber extends from the fan chamber to the excavation working area of the excavation tunnel.

Preferably, the air inlet of the air supply duct in the fan chamber is arranged close to the evaporator of the refrigeration device.

Preferably, the tunneling tunnel ventilation path includes an air inlet tunnel and a dirty air return tunnel that are relatively arranged, and the air-conditioning chamber and the fan chamber are both arranged in the air inlet tunnel of the tunneling tunnel.

Preferably, the air-conditioning chamber is arranged closer to the dirty air return air channel than the fan chamber.

Preferably, the polluted air return air tunnel is arranged on the other side of the excavation tunnel relative to the air inlet tunnel, and the air-conditioning chamber is arranged closer to the excavation tunnel than the fan chamber.

Preferably, the air-conditioning chamber and the fan chamber are respectively arranged on the left and right sides of the air inlet tunnel, and are relatively staggered.

Preferably, the air-conditioning chamber and the fan chamber are formed by excavating from the air inlet tunnel to the left and right sides respectively, and the excavation depth of the air-conditioning chamber is less than the excavation depth of the fan chamber.

Preferably, the evaporator is arranged close to the opening of the fan chamber, and the air inlet of the air supply duct is arranged close to the bottom of the fan chamber.

Preferably, a temperature sensor is provided in the working area of the excavation tunnel, and the temperature sensor is communicatively connected to a refrigeration device.

Preferably, a plurality of temperature sensors are provided in the working area of the excavation tunnel, and the plurality of temperature sensors are distributed along the tunnel depth direction of the working area.

The beneficial effects of the utility model are:

The utility model arranges the compression refrigeration component and the evaporator of the refrigeration device in the air-conditioning chamber and the fan chamber respectively, so that the hot air generated by the compression refrigeration component and the cold air generated by the evaporator are divided into two different spaces; the flexible and adjustable characteristics of the air supply duct are utilized to transport the cold air generated by the evaporator to the excavation working area, so that the length and position of the air supply duct can be adjusted in time according to the advancement of the excavation working area, and the excavation working face can be cooled, and the cooling effect is good and the cost is low; and the hot air generated by the compression refrigeration component is carried out from the dirty air return air passage by the airflow of the ventilation path of the excavation tunnel, and discharged to the surface by the return air shaft.

The utility model arranges the air-conditioning chamber closer to the dirty air return tunnel than the fan chamber, so as to shorten the return path of the hot air in the air-conditioning chamber, that is, the air-conditioning chamber is closer to the excavation tunnel than the fan chamber. At the same time, the air-conditioning chamber and the fan chamber are arranged on the left and right sides of the air inlet tunnel respectively, and are relatively staggered, which can further prevent the air supply duct of the fan chamber from blocking the air-conditioning chamber opening, hindering the return effect of the hot air in the air-conditioning chamber, and preventing the hot air in the air-conditioning chamber from escaping into the fan chamber.

The utility model arranges the excavation depth of the air-conditioning chamber to be smaller than the excavation depth of the fan chamber, that is, the excavation depth of the air-conditioning chamber is shallower, so that the hot air in the air-conditioning chamber is carried out by the airflow of the ventilation path of the excavated tunnel; and the excavation depth of the fan chamber is deeper, so as to avoid the problem of energy waste caused by the cold air in the fan chamber being directly carried out by the airflow of the ventilation path of the excavated tunnel.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the mine local air compression type air conditioning automatic refrigeration system according to the utility model.

The markings of the components in the accompanying drawings are as follows:

1. Excavation tunnel; 2. Air intake tunnel; 3. Sewage air return tunnel; 4. Air conditioning chamber; 5. Fan chamber; 41. Cold transport pipeline; 51. Air supply duct; 6. Compression refrigeration component; 7. Evaporator; 8. Temperature sensor.

DETAILED DESCRIPTION

The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

The embodiment of the utility model provides a local air-compression air-conditioning automatic refrigeration system for a mine, which includes an air-conditioning chamber 4 and a fan chamber 5 arranged on the ventilation path of the excavation tunnel, and a refrigeration device is arranged in the air-conditioning chamber 4, wherein a compression refrigeration component 6 of the refrigeration device is arranged in the air-conditioning chamber 4, and an evaporator 7 of the refrigeration device is arranged in the fan chamber 5 through a cold delivery pipeline 41, and an air supply duct 51 in the fan chamber 5 extends from the fan chamber 5 to the excavation working area of the excavation tunnel 1. Preferably, the air inlet of the air supply duct 51 in the fan chamber 5 is arranged close to the evaporator 7 of the refrigeration device.

By arranging the compression refrigeration component 6 and the evaporator 7 of the refrigeration device in the air-conditioning chamber 4 and the fan chamber 5 respectively, the hot air generated by the compression refrigeration component 6 and the cold air generated by the evaporator 7 are divided into two different spaces; utilizing the flexible and adjustable characteristics of the air supply duct 51, the cold air generated by the evaporator 7 is transported to the excavation work area, so that the length and position of the air supply duct 51 can be adjusted in time according to the advancement of the excavation work area, so as to cool the excavation work face, with good cooling effect and low cost; and the hot air generated by the compression refrigeration component 6 is carried out from the dirty air return air channel 3 by the airflow of the ventilation path of the excavation tunnel, and discharged to the surface by the return air shaft.

As shown in Figure 1, the ventilation path of the excavation tunnel includes an air inlet tunnel 2 and a dirty air return tunnel 3 which are relatively arranged on both sides of the excavation tunnel 1, and an air-conditioning chamber 4 and a fan chamber 5 are arranged on the ventilation path of the excavation tunnel; it is specifically preferred to arrange the fan chamber 5 in the air inlet tunnel 2, and to arrange the air-conditioning chamber 4 in the dirty air return tunnel 3; but due to the high cost of the cold supply pipeline 41, based on the cost saving demand, in order to avoid using a longer cold supply pipeline 41, the air-conditioning chamber 4 and the fan chamber 5 are both arranged in the air inlet tunnel 2 of the excavation tunnel 1.

In order to shorten the return path of the hot air in the air-conditioning chamber 4, the air-conditioning chamber 4 is arranged closer to the dirty air return tunnel 3 than the fan chamber 5. The dirty air return tunnel 3 is arranged on the other side of the excavation tunnel 1 relative to the air inlet tunnel 2, so the air-conditioning chamber 4 is arranged closer to the excavation tunnel 1 than the fan chamber 5. In order to prevent the air supply duct 51 of the fan chamber 5 from blocking the tunnel opening of the air-conditioning chamber 4 and hindering the return effect of the hot air in the air-conditioning chamber 4, as shown in FIG1, the air-conditioning chamber 4 and the fan chamber 5 are respectively arranged on the left and right sides of the air inlet tunnel 2, and are relatively staggered to prevent the hot air in the air-conditioning chamber 4 from escaping into the fan chamber 5.

Specifically, the air-conditioning chamber 4 and the fan chamber 5 are respectively formed by excavating from the air inlet tunnel 2 to the left and right sides. The excavation depth of the air-conditioning chamber 4 is less than that of the fan chamber 5, that is, the excavation depth of the air-conditioning chamber 4 is shallow, which is convenient for the hot air in the air-conditioning chamber 4 to be carried out by the airflow in the ventilation path of the excavated tunnel; and the excavation depth of the fan chamber 5 is deep, which is also to avoid the cold air in the fan chamber 5 being directly carried out by the airflow in the ventilation path of the excavated tunnel, causing energy waste.

As shown in FIG1 , in the air-conditioning chamber 4, the compression refrigeration component 6 of the refrigeration device includes an air compressor and a cooler. The air compressor compresses the refrigerant in the air-conditioning chamber 4 to increase the temperature, and the refrigerant is cooled by the cooler. Then the refrigerant is transported to the evaporator 7 arranged in the fan chamber 5 through the cold delivery pipeline 41, and heat is exchanged with the air in the fan chamber 5 to reduce the temperature in the fan chamber 5. Thus, the hot air generated by the compression refrigeration component 6 and the cold air generated by the evaporator 7 are divided into two different spaces. Among them, in the fan chamber 5, the evaporator 7 is arranged close to the hole of the fan chamber 5, which is convenient for heat exchange with the fresh air flow. The cold air after heat exchange sinks to the bottom of the fan chamber 5. Therefore, the air inlet of the air supply duct 51 is arranged close to the bottom of the fan chamber 5, which is convenient for collecting more cold air and sending it to the excavation work area. Preferably, the air supply duct 51 is a double-layer heat-insulating duct, the outer layer of which is a PVC mesh cloth, and the inner layer is a tin foil foam composite material.

Furthermore, a temperature sensor 8 is provided in the working area of the tunneling tunnel 1, and the temperature sensor 8 is connected to the refrigeration device through a control module, so as to detect the temperature in the tunneling working area through the temperature sensor 8, thereby controlling the operation of the refrigeration device according to the temperature in the tunneling working area, and specifically automatically adjusting the refrigeration power of the refrigeration device according to the environmental monitoring temperature of the temperature sensor 8. As shown in FIG1 , a plurality of temperature sensors 8 are provided in the working area of the tunneling tunnel 1, and the plurality of temperature sensors 8 are distributed along the tunnel depth direction of the working area; when the environmental monitoring temperatures detected by the plurality of temperature sensors 8 are all lowered below the threshold temperature, the control module correspondingly reduces the refrigeration power of the refrigeration device, saves power consumption as much as possible, and ensures that the overall temperature of the tunneling working area is controlled below the threshold temperature.

The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims (10)

1. The automatic refrigerating system of the mine local air-compression type air conditioner is characterized by comprising an air conditioning chamber and a fan chamber which are arranged on a ventilation path of a tunneling roadway, wherein a refrigerating device is arranged in the air conditioning chamber, a compression refrigerating component of the refrigerating device is arranged in the air conditioning chamber, an evaporator of the refrigerating device is arranged in the fan chamber through a cold conveying pipeline, and an air supply air drum in the fan chamber extends from the fan chamber to a tunneling working area of the tunneling roadway.

2. The automatic refrigeration system of a mine local air-compression type air conditioner of claim 1, wherein an air inlet of an air supply duct in the fan chamber is arranged close to an evaporator of the refrigeration device.

3. The mine local air-compression type air-conditioning automatic refrigerating system according to claim 1, wherein the tunneling roadway ventilation path comprises an air inlet roadway and a dirty air return roadway which are arranged oppositely, and the air-conditioning chamber and the fan chamber are arranged in the air inlet roadway of the tunneling roadway.

4. The mine local air-conditioning automatic refrigeration system as set forth in claim 3, wherein said air-conditioning chamber is disposed closer to a dirty air return roadway than to a fan chamber.

5. The automatic refrigeration system of a mine local air-compression type air conditioner according to claim 4, wherein the dirty air return tunnel is arranged on the other side of the tunneling tunnel relative to the air inlet tunnel, and the air conditioning chamber is arranged closer to the tunneling tunnel than the fan chamber.

6. The automatic refrigerating system of the mine local air-compression type air conditioner according to claim 5, wherein the air conditioning chamber and the fan chamber are respectively arranged at the left side and the right side of the air inlet tunnel and are arranged in a staggered manner.

7. The automatic refrigerating system of a mine local air-compression type air conditioner according to claim 6, wherein the air conditioner chamber and the fan chamber are formed by tunneling from an air inlet tunnel to the left and the right sides respectively, and the tunneling depth of the air conditioner chamber is smaller than that of the fan chamber.

8. The automatic refrigeration system of a mine local air-compression type air conditioner according to claim 1, wherein the evaporator is arranged close to a chamber opening of the fan chamber, and an air inlet of the air supply air duct is arranged close to a chamber bottom of the fan chamber.

9. The automatic refrigerating system of the mine local air-compression type air conditioner according to claim 1, wherein a temperature sensor is arranged in a working area of the tunneling roadway and is in communication connection with a refrigerating device.

10. The automatic refrigerating system of the mine local air-compression type air conditioner according to claim 9, wherein a plurality of temperature sensors are arranged in a working area of the tunneling roadway, and the temperature sensors are distributed along the roadway depth direction of the working area.