Coal mine underground hydraulic fan air cooling system

Abstract

The utility model discloses a kind of coal mine underground hydraulic fan air cooling system, including hydraulic fan unit, cold water tower, cold water heat sink mechanism and circulating hot water return structure;High-temperature hot water generated by hydraulic fan unit is recycled into cold water tower again through circulating hot water return structure;Cold water heat sink mechanism includes box, heat dissipation cold pipe structure is installed in box, water pumped by cold water tower is pumped into hydraulic fan unit after heat dissipation cold pipe structure;The bottom of box is fixedly connected with aeration water tank, aeration assembly is installed in aeration water tank, aeration assembly aeration generates heat dissipation water vapor, heat dissipation cold pipe is located above aeration assembly;The top of box is installed with drain steam cylinder, the bottom of drain steam cylinder is installed with fan that water vapor is outwardly discharged and scattered.The above structure effectively solves the technical defects that water tower water temperature is high in high-temperature weather, which leads to poor refrigeration effect of hydraulic fan unit and high energy consumption.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic fan air-cooling technology, and in particular relates to an air-cooling system for underground hydraulic fans in coal mines. Background Technology

[0002] During coal mining operations, the high-temperature environment inside the tunnels is a key factor contributing to the harsh working conditions and heatstroke among workers. Therefore, to ensure the health of workers, existing technologies employ cooling systems such as air conditioning in underground mines. Among these, hydraulic fan cooling systems have become the preferred cooling method in coal mining tunnels due to their significant cooling effect and large effective cooling space.

[0003] Hydraulic fans require chilled water for cooling during operation, which is pumped out from a cooling tower. However, in actual operation, especially during hot summer weather, the temperature of the chilled water inside the cooling tower is also high. As a result, the water pumped out of the cooling tower is also hot, which reduces the cooling effect of the hydraulic fan and increases the energy consumption of air cooling.

[0004] Therefore, if the chilled water pumped out by the cooling tower cannot be cooled in an energy-saving and efficient manner under high-temperature conditions, it will not only fail to fundamentally solve the problem of poor cooling efficiency of hydraulic fan refrigeration equipment, but also lead to increased energy consumption and increased refrigeration costs. Utility Model Content

[0005] Based on the above background, the purpose of this utility model is to provide an air-cooling system for underground hydraulic fans in coal mines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A hydraulic fan cooling system for underground coal mines includes a hydraulic fan unit, a cooling tower, a cooling water heat dissipation mechanism, and a circulating hot water return structure.

[0008] The high-temperature hot water generated by the hydraulic fan unit is recycled back into the cooling tower through the circulating hot water return structure;

[0009] The cold water heat dissipation mechanism includes a box, and a heat dissipation pipe structure is installed inside the box. The water pumped out of the cold water tower is pumped into the hydraulic fan unit after passing through the heat dissipation pipe structure.

[0010] An aeration tank is fixedly connected to the bottom of the box. An aeration component is installed in the aeration tank. The aeration component generates heat dissipation water vapor through aeration. The heat dissipation cold pipe is located above the aeration component.

[0011] A drain cylinder is installed on the top of the housing, and a fan is installed at the bottom of the drain cylinder to dissipate water vapor outwards.

[0012] Preferably, a bracket is fixedly connected to the upper end of the housing, and a heat dissipation pipe structure is fixedly installed on the bracket. The bracket has several strip-shaped through holes for dissipating water vapor.

[0013] Preferably, the heat dissipation pipe structure includes several heat dissipation pipe units arranged in parallel, and the water inlet and outlet of the heat dissipation pipe units are alternately connected by a bend connecting pipe.

[0014] Preferably, the heat dissipation pipe unit includes a folded pipe with a folded structure;

[0015] The heat dissipation pipe structure also includes a hot water inlet pipe connected to the heat dissipation pipe unit and a cold water outlet pipe connected to the heat dissipation pipe unit.

[0016] The hot water inlet pipe and the cold water outlet pipe pass through the casing respectively; the hot water inlet pipe is connected to the outlet end of the cooling tower; and the cold water outlet pipe is connected to the inlet end of the hydraulic fan unit.

[0017] Preferably, the water tank is integrally formed at the bottom of the box body, and the bottom of the box body is hollowed out;

[0018] The aeration assembly includes an aeration pipe located at the lower end of the water tank, and several aeration nozzles are connected and installed on the aeration pipe.

[0019] It also includes an aeration blower connected to the aeration pipe.

[0020] Preferably, the bottom of the housing is detachably fitted with a top cover, and the top of the top cover has a drain outlet, with a drain cylinder fixedly installed on the drain outlet.

[0021] Preferably, the outlet of the cooling tower is connected to a first pipe, and the outlet of the first pipe is connected to the hot water inlet pipe.

[0022] The cold water outlet pipe is connected to a second pipe, which is connected to the water inlet of the hydraulic fan unit;

[0023] The outlet of the hydraulic fan unit is connected to a third pipe, the outlet of the third pipe is connected to a radiator, the outlet of the radiator is connected to a fourth pipe, and the fourth pipe is connected to the inlet of the cooling tower.

[0024] Preferably, a water supply pipe is connected to the upper end of the side wall of the water tank, and the water supply pipe is connected to the first pipe.

[0025] Preferably, an air inlet is provided at the lower end of the side wall of the housing, and the air inlet is located above the water tank.

[0026] This utility model has the following beneficial effects:

[0027] 1. This solution addresses the technical drawback of excessively high water temperature in water-cooled towers during hot weather, which leads to reduced cooling efficiency and excessive energy consumption when pumped to hydraulic fan units. Specifically, an aeration tank is fixedly connected to the bottom of the tower housing. An aeration assembly is installed within the tank, generating cooling water vapor. The cooling pipes are located above the aeration assembly. This method of using aeration components to create water mist that contacts the cooling pipe structure not only improves heat dissipation efficiency but also offers the advantages of higher heat exchange efficiency and better evaporative cooling.

[0028] 2. A drain cylinder is installed on the top of the chamber. To improve the removal of water vapor and hot air, a fan is installed at the bottom of the drain cylinder to disperse the water vapor outwards. During operation, the steam generated by aeration disperses within the chamber structure. The fan on the drain cylinder drives the steam to rise from the bottom of the chamber and exit through the drain cylinder at the top. During this process, the steam and air mix together, rise together, and come into contact with the heat dissipation pipe structure, where they exchange heat. The heat exchange generates hot air and hot steam, which are then discharged from the drain cylinder.

[0029] 3. The heat dissipation pipe structure is formed by multiple heat dissipation pipe units. This design aims to maximize the use of the limited cabinet space by arranging these units in parallel, matching the square cavity shape of the cabinet to form a bundled pipe structure resembling a cube. This bundled pipe structure has a long overall path, a large total surface area, and gaps between the heat dissipation pipe units, creating channels. Therefore, driven by the fan, water vapor and cool airflow fully contact this bundled pipe structure, resulting in excellent heat exchange. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the working principle structure in the embodiments of this utility model;

[0032] Figure 2 This is a schematic diagram of the cold water heat dissipation mechanism in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the heat dissipation pipe structure and water tank in the embodiments of this utility model;

[0034] Figure 4This is a schematic diagram of the aeration component in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the heat dissipation cold pipe structure fixed installation bracket in the embodiment of this utility model.

[0036] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0040] Example 1

[0041] like Figure 1-5 As shown, a hydraulic fan cooling system for underground coal mines includes a hydraulic fan unit 1, a cooling tower 5, a chilled water heat dissipation mechanism, and a circulating hot water return structure. Similar to existing systems, the cooling tower 5 pumps stored chilled water to the hydraulic fan unit 1 for cooling during operation.

[0042] Among them, the hydraulic fan unit 1 and the cooling tower 5 are conventional hydraulic fan cooling system devices disclosed in the prior art.

[0043] Meanwhile, the high-temperature hot water generated by the hydraulic fan unit 1 is recycled back into the cooling tower 5 through the circulating hot water return structure.

[0044] To address the technical shortcomings of excessively high water temperature in cooling tower 5 during hot weather, which leads to reduced cooling efficiency and excessive energy consumption when pumped to hydraulic fan unit 1 (high water temperature increases energy consumption during cooling), this utility model makes the following improvements:

[0045] The cold water cooling mechanism includes a housing 2, and a cooling pipe structure 3 is installed inside the housing 2. The water pumped out by the cooling tower 5 is pumped into the hydraulic fan unit 1 after passing through the cooling pipe structure 3.

[0046] During operation, the heat dissipation pipe structure 3 is used to further dissipate heat from the hot water pumped from the cooling tower 5, so that the water entering the hydraulic fan unit 1 has been cooled.

[0047] Meanwhile, to increase the heat dissipation efficiency of the cooling pipe structure 3, an aeration water tank 7 is fixedly connected to the bottom of the aforementioned housing 2. An aeration component 6 is installed inside the aeration water tank 7. The aeration component 6 generates heat dissipation water vapor through aeration, and the cooling pipe junction is located above the aeration component 6. Using the aeration component 6 to generate water mist that comes into contact with the cooling pipe structure 3 not only improves the heat dissipation efficiency, but also has the advantage that the heat exchange efficiency is higher after the water mist comes into contact with the cooling pipe junction, and the evaporative heat dissipation effect is better.

[0048] If the traditional water immersion method is used, cooling water needs to be prepared separately (which consumes more energy). However, if the aeration method is used, water is directly added from the cooling tower 5, and the aeration generates water mist to cool the water.

[0049] Meanwhile, a drain cylinder 22 is installed on the top of the housing 2. To improve the exhaust of water vapor and hot air, a fan (not shown in the figure) is installed at the bottom of the drain cylinder 22 to disperse the water vapor outwards, as is the case in the existing method. During operation, the steam generated by aeration diffuses throughout the structure of the housing 2. The fan installed on the drain cylinder 22 drives the water vapor to rise from the bottom of the housing 2 and is discharged from the drain cylinder 22 at the top of the housing 2. During this process, the water vapor and airflow mix together, rise together, and come into contact with the heat dissipation pipe structure 3, where they exchange heat. The heat exchange generates hot airflow and hot steam, which are then discharged from the drain cylinder 22.

[0050] The above structure addresses the technical shortcomings of high energy consumption and reduced cooling effect of hydraulic fan unit 1 caused by high water temperature in the cooling tower 5 during hot seasons and weather. Furthermore, this method is energy-saving, environmentally friendly, and has low construction costs, making it more economical and environmentally friendly.

[0051] Example 2

[0052] like Figure 1-5As shown, in this embodiment, based on the structure of embodiment 1, a bracket is fixedly connected to the upper end of the aforementioned housing 2, and the heat dissipation pipe structure 3 is fixedly installed on the bracket 33. The bracket 33 has several strip-shaped through holes 331 for dissipating water vapor. That is, during the operation of the fan, water vapor and hot air flow out through the strip-shaped through holes under the drive of the fan.

[0053] The specific structure of the heat dissipation pipe structure 3 is as follows: it includes several heat dissipation pipe units 31 arranged in parallel. According to the existing method, the water inlet end and the water outlet end of the heat dissipation pipe unit 31 are alternately connected by a bend connecting pipe 32 (the bracket 33 is provided with a support hole for fixing the heat dissipation pipe unit 31, and the heat dissipation pipe unit 31 is welded and fixed on the support hole).

[0054] The heat dissipation pipe unit 31 includes a folded pipe with a folded structure; the heat dissipation pipe unit 31 located at the front and rear ends is connected to a hot water inlet pipe 311 and a cold water outlet pipe 312, respectively.

[0055] That is, the entire heat dissipation cold pipe structure 3 achieves one inlet and one outlet through the hot water inlet pipe 311 and the cold water outlet pipe 312. The hot water inlet pipe 311 and the cold water outlet pipe 312 pass through the box body 2 respectively; the hot water inlet pipe 311 is connected to the water outlet end of the cooling tower 5; the cold water outlet pipe 312 is connected to the water inlet end of the hydraulic fan unit 1.

[0056] The heat dissipation pipe structure 3 described above is formed by multiple heat dissipation pipe units 31. The aim is to arrange the heat dissipation pipe units 31 in parallel within the limited space of the housing 2, matching the square cavity shape of the housing 2 to form a bundled pipe structure with a cuboid-like shape. This bundled pipe structure has a long overall path and a large total surface area, and the gaps between the heat dissipation pipe units 31 form channels. Therefore, driven by the fan, water vapor and cool airflow fully contact this bundled pipe structure, generating good heat exchange and achieving sufficient cooling of the high-temperature water.

[0057] The aforementioned water tank is integrally molded at the bottom of the box body 2, therefore, the bottom of the box body 2 is hollow.

[0058] Meanwhile, the aeration component 6 includes an aeration pipe 62 located at the lower end of the water tank (similarly to increase the amount of aeration mist generated). The aeration pipe 62 adopts a horizontal zigzag structure. It has the same structure and aeration principle as existing aeration pipes 62, and several aeration nozzles 63 are connected and installed on the aeration pipe 62. It also includes an aeration blower 61 connected and installed on the aeration pipe 62.

[0059] During operation, the aeration blower 61 pumps airflow at a certain pressure into the aeration pipe 62, which is submerged in water. The aeration pipe 62 and aeration nozzle 63 aerate the water, generating a large amount of water mist. At this time, the fan drives the water mist and cooling airflow upwards.

[0060] Therefore, an air inlet A is provided at the lower end of the side wall of the housing 2, and the air inlet A is located above the water tank 7. That is, during actual operation, the air inlet A is located above the liquid surface of the water tank 7.

[0061] The fan generates a cold airflow that enters through the air inlet A. The inner wall of the housing 2 serves as the air guide structure, driving the cold airflow to carry the aeration mist.

[0062] In actual operation, to improve cooling efficiency, multiple air intake ports A are opened at the lower end of the side wall of housing 2. Four to six air intake ports A can be opened on each side wall of housing 2. A stainless steel filter screen is fixed to each port. The air intake port A is a round hole.

[0063] The bottom of the aforementioned housing 2 is detachably fitted with a top cover 21 (specifically, it is fixedly assembled by bolts). The top of the top cover 21 has a drain outlet, and a drain cylinder 22 is fixedly installed on the drain outlet.

[0064] Example 3

[0065] like Figure 1-5 As shown, in this embodiment, based on the structure of embodiment 2, the outlet of the above-mentioned cooling tower 5 is connected to a first pipe (equipped with a valve and a water pump), and the outlet of the first pipe is connected to the hot water inlet pipe 311; the cold water outlet pipe 312 is connected to a second pipe (similarly equipped with a valve and a water pump), and the second pipe is connected to the inlet of the hydraulic fan unit 1.

[0066] Similar to existing circulating water structures, the circulating hot water return structure includes a third pipe connected to the outlet of the hydraulic fan unit 1. The outlet of this third pipe is connected to a radiator 4, which is a conventional radiator disclosed in existing technology, such as an air-cooled radiator. After being cooled by the air-cooled radiator, the hot water re-enters the cooling tower 5.

[0067] Therefore, the outlet of the radiator is connected to the fourth pipe, which is connected to the inlet of the cooling tower 5 (similarly, valves and water pumps are also installed on the third and fourth pipes).

[0068] The water for aeration in the aforementioned water tank 7 comes from the cooling tower 5. Water replenishment is only required when the water level in the water tank 7 drops to the point where aeration is no longer possible. Therefore, a water replenishment pipe is connected to the upper side wall of the water tank 7 (water can be replenished by opening the valve), and the water replenishment pipe is connected to the first pipe.

[0069] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A coal mine underground hydraulic fan air-cooling system, characterized in that, This includes hydraulic fan units, cooling towers, chilled water heat dissipation mechanisms, and circulating hot water return structures; The high-temperature hot water generated by the hydraulic fan unit is recycled back into the cooling tower through the circulating hot water return structure; The cold water heat dissipation mechanism includes a box, and a heat dissipation pipe structure is installed inside the box. The water pumped out of the cold water tower is pumped into the hydraulic fan unit after passing through the heat dissipation pipe structure. An aeration tank is fixedly connected to the bottom of the box. An aeration component is installed in the aeration tank. The aeration component generates heat dissipation water vapor through aeration. The heat dissipation cold pipe is located above the aeration component. A drain cylinder is installed on the top of the housing, and a fan is installed at the bottom of the drain cylinder to dissipate water vapor outwards.

2. The coal mine underground hydraulic fan air-cooling system according to claim 1, characterized in that, A bracket is fixedly connected to the upper end of the box, and a heat dissipation pipe structure is fixedly installed on the bracket. Several strip-shaped through holes for dissipating water vapor are opened on the bracket.

3. The coal mine underground hydraulic fan air-cooling system according to claim 1, characterized in that, The heat dissipation pipe structure includes several heat dissipation pipe units arranged in parallel, with the water inlet and outlet of each heat dissipation pipe unit alternately connected by a bend connecting pipe.

4. The coal mine underground hydraulic fan air-cooling system according to claim 3, characterized in that, The heat dissipation pipe unit includes a folded pipe with a folded structure; The heat dissipation pipe structure also includes a hot water inlet pipe connected to the heat dissipation pipe unit and a cold water outlet pipe connected to the heat dissipation pipe unit. The hot water inlet pipe and the cold water outlet pipe pass through the casing respectively; the hot water inlet pipe is connected to the outlet end of the cooling tower; and the cold water outlet pipe is connected to the inlet end of the hydraulic fan unit.

5. The coal mine underground hydraulic fan air-cooling system according to claim 4, characterized in that, The water tank is integrally formed at the bottom of the box body, and the bottom of the box body is hollowed out; The aeration assembly includes an aeration pipe located at the lower end of the water tank, and several aeration nozzles are connected and installed on the aeration pipe. It also includes an aeration blower connected to the aeration pipe.

6. The coal mine underground hydraulic fan air-cooling system according to claim 5, characterized in that, The bottom of the box is detachably fitted with a top cover, and the top of the top cover has a drain outlet, on which a drain cylinder is fixedly installed.

7. The coal mine underground hydraulic fan air-cooling system according to claim 5, characterized in that, The outlet of the cooling tower is connected to a first pipe, and the outlet of the first pipe is connected to the hot water inlet pipe. The cold water outlet pipe is connected to a second pipe, which is connected to the water inlet of the hydraulic fan unit; The circulating hot water return structure includes a third pipe connected to the outlet of a hydraulic fan unit, a radiator connected to the outlet of the third pipe, a fourth pipe connected to the outlet of the radiator, and the fourth pipe connected to the inlet of a cooling tower.

8. The coal mine underground hydraulic fan air-cooling system according to claim 7, characterized in that, A water supply pipe is connected to the upper end of the side wall of the water tank, and the water supply pipe is connected to the first pipe.

9. The coal mine underground hydraulic fan air-cooling system according to claim 1, characterized in that, An air inlet is provided at the lower end of the side wall of the box, and the air inlet is located above the water tank.

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