RU2611770C2 - Thod of air conditioning in mine workings - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: invention relates to mine industry and can be used to normalize air temperature in mine workings. The method of air conditioning during development of mineral deposit using underground method is suggested; the method characterizing with that in workings a refrigerating plant, heated air delivery machine and air cooler are installed in series on the trolley. Wherein the heated air delivery machine is connected with the air cooler, and the refrigerating plant is connected by pipelines to heat exchangers of the air cooler, and by pipeline to the underground technical coolant pipeline - fire water pipeline. Wherein the air cooler heat exchanging the mine air with cooled coolant, the heated coolant is delivered to the refrigerating plant transferring excessive heat generation to the coolant from the technical pipeline.

EFFECT: invention improves efficiency and reliability of air cooling during underground air conditioning.

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Description

The invention relates to the mining industry and can be used to normalize the air temperature in the mine workings. The modern development of mining, maintaining and increasing the capacity of mining often leads to the need to introduce new deep-seated reserves. With an increase in the depth of mining operations, the temperature of the rocks increases, and the influence of technogenic heat sources on the formation of adverse microclimatic conditions in mine workings increases. As a result, the air temperature in underground working areas rises to excess values.

The existing methods of air conditioning in the development of deposits involve the use of a stationary refrigeration machine and non-stationary air coolers located directly on the mining sites [1-4]. The disadvantage of this approach is the need to build a branched network of a circulation pipeline with a coolant that provides heat transfer from non-stationary air coolers to the refrigeration machine.

Closest to the invention, the technical solution is air conditioning technology using mobile refrigeration units KPSh 130-2-0 and KPSh 300 [1, 2].

The disadvantages of the known technology is a system for removing the heat of condensation of a refrigerant from circulating condenser water systems. When working in a cycle of reverse water supply, air conditioners are equipped with water-cooling modules designed to be placed in workings with an outgoing air stream. This leads to a significant complication of air conditioning technology, the need to organize additional circulation circuits in the mine network. In addition, the efficiency of air conditioning as a whole depends on the efficiency of the water cooling modules, which reduces the reliability of the entire system.

The objective of the invention is to eliminate this drawback and ensure effective cooling of the air in the areas of treatment of ore deposits through the use of a technical pipeline in the mine. An example of a process pipeline is a fire pipeline.

The problem is solved using the characteristics indicated in the claims, such as a method of air conditioning in the development of mineral deposits underground method, characterized in that in the development of sequentially installed on carts and connected between a refrigeration machine, a unit for supplying heated air and an air cooler, with in this case, the heated air supply unit is connected to the air cooler, and the refrigeration machine is connected via pipelines to heat exchangers during air cooler and through a pipeline to the underground technical refrigerant supply pipeline — a fire pipeline, moreover, the mine cooler exchanges mine air with the cooled refrigerant in the air cooler, which is then fed to the refrigerating machine, which transfers excess heat to the refrigerant from the technical pipeline.

The above set of essential features allows you to get the following technical result - ensuring effective cooling of the air in the areas of ore ore treatment by using a technical pipeline with a coolant.

The proposed air conditioning technology includes the following elements (Fig. 2):

1. Cart.

2. The refrigerating machine.

3. Air supply unit.

4. Air cooler.

5. Pipelines with a coolant.

6. Technical pipeline with a coolant.

7. The pipeline.

8. The cooled stream of air.

9. Heated air in the mine.

or blocks (Fig. 1): a refrigeration machine 3, comprising a compressor 10, an electric motor 11, a freon condenser 12; the air supply unit 4 is equipped with a fan 13, a freon evaporator 14; heat exchanger (air cooler) 4.

The air conditioning method for developing mineral deposits by the underground method (Fig. 2) includes the following units sequentially mounted on trolleys 1 and interconnected: a refrigeration machine 2, a supply unit 3 of heated air 9 and an air cooler 4, while the refrigeration machine 2 via pipelines 5 connected to the heat exchangers of the air cooler 4 and through the pipeline 7 to the underground technical pipeline 6 supply coolant (for example, water fire line ).

A conditioning block diagram is shown in FIG. one.

The principle of the method of air conditioning is to supply a cooled refrigerant to the heat exchanger (air cooler), where it is exchanged with mine air. As a result, the mine air is cooled, and the coolant is heated and fed to the refrigeration machine. In operation, the chiller transfers excess heat to the refrigerant, which is supplied from the technical pipeline (position 6 in FIG. 2). Further, heat is removed through it to the mine workings with a favorable thermal regime.

All equipment used in the proposed conditioning method is structurally placed on wheeled trolleys as shown in FIG. 2. This allows for the mobility of the technology and its movement within the mining horizons to areas with the most adverse microclimatic conditions.

The advantages of the proposed method of air conditioning are:

- lack of need for the construction of a stationary refrigerating machine of high power;

- use as an external process refrigerant the technical pipeline available in the mine (for example, fire fighting);

- The technology is a combination of units mounted on a wheeled chassis, which ensures mobility. Moreover, the amount of installation work is minimized;

- when moving the compressor-condenser unit of the chiller connected to the air cooler with freon hoses, there is no need to disconnect the units.

Although the present method is described through examples of its implementation and the technological scheme, the scope of this technical solution is not limited to these examples, but is determined only by the claims taking into account possible equivalents.

Bibliography

1. Martynov A.A. Systems and means of local cooling of mine air in mine workings / A.A. Martynov, A.K. Yakovenko, A.B. Oleksyuk // Mountain Information and Analytical Bulletin, No. 7 - M .: MGGU, 2007. - p. 132-140. - prototype.

2. Martynov A.A. Thermal calculations and the choice of cooling means for controlling the microclimate in the dead-end workings of deep mines / A.A. Martynov, N.V. Maleev, A.K. Yakovenko // Rosrobka novoroshki 2013; generous science and technology zbirnik. - D .: TOV "LizunovPres", 2013. - S. 121-130.

3. Mackay L., Bluhm S., Van Rensburg J. Refrigeration and cooling concepts for ultra-deep platinum mining. The 4th International Platinum Conference, Platinum in transition "Boom or Bust", The Southern African Institute of Mining and Metallurgy, 2010.

4. Lugovsky S.I. Aeration of deep mines. - Gosgortekhizdat, 1962 .-- 324 p.

5. Duganov G.V., Baratov E.I. Thermal conditions of mines. - Moscow: Gosgortekhizdat, 1963 .-- 144 p.

Claims (1)

The method of air conditioning in the development of mineral deposits by an underground method, characterized in that the mine is sequentially installed on carts and connected to each other by a refrigerating machine, a heated air supply unit and an air cooler, while the heated air supply unit is connected to an air cooler, and the refrigerating machine is connected by pipelines to the heat exchangers of the air cooler and through the pipeline to the underground technical supply pipe x adonositelya - the fire pipe, wherein heat exchange is performed in the air cooler mine air with the cooled refrigerant, which is heated and then fed into the chiller, which transmits the excess heat from the refrigerant pipeline maintenance.

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