CN203928164U - The humiture that is applicable to frequency conversion machine room is independently controlled vaporizing and cooling air conditioning device - Google Patents

Abstract

The temperature and humidity independent control evaporative cooling air conditioner suitable for frequency conversion machine room disclosed by the utility model includes a first evaporative cooling water chiller and a second evaporative cooling air conditioner set outside the frequency conversion machine room of a power plant, and also includes a set in the power plant frequency conversion machine room There are multiple centrifugal spray fans on the outer fan wall. There is filler b behind the fan wall. There is a water tank below the filler b. A ductless air supply area is formed between the fan wall and filler b. Behind the filler b, there is a The floor air supply outlet, the top of the frequency conversion machine room of the power plant is equipped with an air exhaust port, and the wall of the power plant frequency conversion machine room opposite to the fan wall is connected with an exhaust duct, which is connected to the air inlet of the second evaporative cooling air conditioning unit The air supply outlet of the cooling air conditioner unit is connected with multiple floor air supply outlets through the buried air supply duct. The evaporative cooling air-conditioning device of the utility model can not only reduce the cooling loss of air supply, but also realize independent control of temperature and humidity.

Description

Evaporative cooling air-conditioning device with independent temperature and humidity control for frequency conversion machine room

technical field

The utility model belongs to the technical field of air-conditioning equipment, and relates to a temperature-humidity independent control evaporative cooling air-conditioning device used in a frequency conversion machine room of a power plant, in particular to an evaporative-cooling air-conditioning unit, an evaporative-cooling water chiller and a centrifugal spray fan. Controls evaporative cooling air conditioning units.

Background technique

With the rapid development of society, people's electricity consumption is gradually increasing, power plants are constantly being built, and the cooling of the frequency conversion machine room of power plants has attracted much attention. The heat will cause the temperature in the inverter cabinet and the room to continue to rise. When it reaches a certain value, the electrical system will alarm and trip for protection, affecting the normal operation of the system and even shutting down the unit.

At present, most inverter rooms use mechanical refrigeration, which consumes a lot of power, the refrigerant is harmful to the environment, and cannot achieve independent control of temperature and humidity. The initial investment of evaporative cooling air conditioners is 1/2 of traditional mechanical refrigeration, the maintenance cost is 1/3 of traditional mechanical refrigeration, and the operating cost is 1/4 of traditional mechanical refrigeration. It is environmentally friendly and is very suitable for frequency conversion in power plants. Cooling of the computer room.

Utility model content

The purpose of the utility model is to provide an evaporative cooling air-conditioning device with independent temperature and humidity control suitable for frequency conversion machine rooms, which can not only reduce the cooling loss of air supply, but also realize independent control of temperature and humidity.

The technical scheme adopted by the utility model is that the evaporative cooling air-conditioning device suitable for independent temperature and humidity control of the frequency conversion machine room includes a first evaporative cooling water chiller and a second evaporative cooling air conditioner set outside the frequency conversion machine room of the power plant, and also includes There are multiple centrifugal spray fans installed on the fan wall of the frequency conversion machine room of the power plant. There is a filler b in the frequency conversion machine room of the power plant behind the fan wall. A water tank is installed under the filler b, and a ductless air supply is formed between the fan wall and the filler b. In the area, the floor of the frequency conversion machine room of the power plant behind the filler b is provided with multiple floor air supply outlets, and the top of the power plant frequency conversion machine room corresponding to the multiple floor air supply ports is provided with air outlets, and the wall of the power plant frequency conversion machine room opposite to the fan wall is connected An exhaust duct is provided, and the exhaust duct is connected to the air inlet of the second evaporative cooling air-conditioning unit, and the air supply outlet of the second evaporative cooling air-conditioning unit is connected to a plurality of floor air supply outlets through the buried air supply duct.

The utility model is also characterized in that,

The air inlet side of the fan wall is provided with a filter b.

The centrifugal spray fan is composed of a fan unit and a spray unit arranged in sequence according to the air inlet direction.

The first evaporative cooling chiller unit includes an organic unit casing, a fresh air outlet is arranged on the side wall of the unit casing, and a filter a, a first tubular indirect evaporative cooler and For the direct evaporative cooler, the first tubular indirect evaporative cooler is provided with a water baffle a and the fan a in sequence, and the direct evaporative cooler is provided with a water baffle b and a fan b in turn, and the fan a and the fan b correspond to Air outlets are arranged on the top wall of the casing of the unit.

The first tubular indirect evaporative cooler includes a vertical heat exchange tube group, a water distributor is arranged above the vertical heat exchange tube group, and a circulating water tank b is installed under the vertical heat exchange tube group, and the circulating water tank b passes through The first water supply pipe is connected to the water distributor, and a water pump d is arranged on the first water supply pipe.

The direct evaporative cooler includes filler a, a nozzle a is arranged above the filler a, a circulating water tank a is arranged below the filler a, the circulating water tank a is connected to the nozzle a through a second water supply pipe, and a water pump is arranged on the second water supply pipe a;

The circulating water tank a is connected to the centrifugal spray fan through the first water pipe G1, and the circulating water tank a is respectively connected to the surface cooler and the circulating water tank c in the second evaporative cooling air conditioning unit through the second water pipe G2 and the third water pipe G3.

Packing a is a triangular packing.

The first water pipe G1 is provided with a water pump b; the second water pipe G2 is provided with a water pump c; and the third water pipe G3 is provided with a water pump e.

The second evaporative cooling air-conditioning unit includes an air-conditioning shell, and air inlets and air supply ports are respectively arranged on opposite side walls of the air-conditioning shell, and a filter c and a surface cooler are sequentially arranged in the air-conditioning shell according to the flow direction of the air after entering 1. The second tube-type indirect evaporative cooler and fan d, the top of the second tube-type indirect evaporative cooler is provided with a water barrier c and fan c in sequence, and the top wall of the air-conditioning housing corresponding to fan c is provided with an exhaust window.

The second tubular indirect evaporative cooler includes a heat exchange tube group. The heat exchange tube group is composed of a plurality of horizontally arranged heat exchange tubes. A nozzle b is arranged above the heat exchange tube group. The nozzle b passes through the pipe and the surface cooler. connected, a circulating water tank c is arranged below the heat exchange tube group.

The beneficial effects of the utility model are:

1. The evaporative cooling air-conditioning device of the utility model makes full use of the clean exhaust air in the machine room to realize independent control of temperature, and uses centrifugal spray fan to process outdoor fresh air to realize independent control of humidity.

2. The evaporative cooling air conditioner of this utility model installs a filter outside the fan wall of the frequency conversion machine room of the power plant to filter the outdoor fresh air, and evenly installs multiple centrifugal spray fans on the fan wall to spray and transport the outdoor fresh air Integrated, the spray volume and air supply volume of the centrifugal spray fan can be flexibly and individually controlled according to the humidity demand in the machine room, avoiding energy waste, and at the same time, the filtration and spray treatment of outdoor fresh air can reduce the coal ash around the power plant to a certain extent The influence of impurities such as impurities on the air quality of the frequency conversion machine room of the power plant.

3. In the evaporative cooling air-conditioning device of the present utility model, fillers are provided in the ductless air supply area. The fillers can increase the contact area between mist and air, prevent excess mist from entering the frequency conversion machine room of the power plant, and have a certain filtering effect.

4. The evaporative cooling air-conditioning device of the present utility model is equipped with a second evaporative cooling air-conditioning unit to handle the exhaust air in the frequency conversion machine room of the power plant, and utilizes the characteristics of clean exhaust air to perform two-stage equal-humidity cooling treatment on it, and then send it underground The air duct is sent into the computer room from the floor air supply port, and the water used by the evaporative cooling air-conditioning unit comes from the high-temperature cold water produced by the evaporative cooling chiller, which has a better treatment effect on the exhaust air.

5. In the evaporative cooling air-conditioning device of the present utility model, the low-temperature air processed by the evaporative cooling air-conditioning unit is sent to the floor air supply outlet by the buried air supply pipe, and the air supply from the buried air supply pipe can reduce the cooling loss of the air supply and avoid energy consumption. waste.

6. In the evaporative cooling air conditioner of the present utility model, the evaporative cooling chiller produces high-temperature cold water, and the produced high-temperature cold water is supplied to the centrifugal spray fan, which can not only increase the humidity of the frequency conversion machine room of the power plant, but also have a certain cooling effect; The tubular indirect section in the evaporative cooling chiller adopts the standpipe type, which can avoid the clogging of the pipeline by impurities such as coal ash around the power plant, and improve the efficiency of the unit to produce high-temperature cold water.

7. The evaporative cooling air-conditioning device of the present utility model uses energy-saving, low-carbon, and environmentally friendly evaporative cooling air-conditioning units and evaporative cooling water chillers, which not only achieves the treatment effect of cold air and cold water, but also contributes to the national energy saving and emission reduction. contribute.

Description of drawings

Fig. 1 is a structural diagram of the utility model evaporative cooling air conditioner.

In the figure, 1. The first evaporative cooling chiller, 2. Fan a, 3. Fan b, 4. Water baffle b, 5. Nozzle a, 6. Packing a, 7. Water pump a, 8. Circulating water tank a, 9. Water pump b, 10. Water pump c, 11. Circulating water tank b, 12. Vertical heat exchange tube group; 13. Water pump d, 14. Filter a, 15. Filter b, 16. Spray unit, 17. Fan Unit, 18. fan wall, 19. centrifugal spray fan, 20. ductless air supply area, 21. air inlet, 22. exhaust outlet, 23. exhaust duct, 24. filter c, 25. surface cooler, 26. Second evaporative cooling air conditioning unit, 27. Fan c, 28. Water baffle c, 29. Nozzle b, 30. Fan d, 31. Heat exchange tube group, 32. Buried air supply pipe, 33. Circulating water tank c, 34. Water pump e, 35. Floor air outlet, 36. Packing b, 37. Water tank, 38. Fresh air outlet, 39. Water baffle a, G1. The first water pipe, G2. The second water pipe, G3. The third water pipe.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

The structure of the evaporative cooling air-conditioning device of the utility model is shown in Figure 1. It includes a first evaporative cooling chiller 1 and a second evaporative cooling air-conditioning unit 26 arranged outside the frequency conversion machine room of the power plant, and also includes a set outside the frequency conversion machine room of the power plant. A plurality of centrifugal spray fans 19 on the fan wall 18, a filler b36 is installed in the frequency conversion machine room of the power plant behind the fan wall 18, a water tank 37 is arranged below the filler b36, and a ductless air supply area is formed between the fan wall 18 and the filler b36 20. There are multiple floor air supply outlets 35 on the floor of the frequency conversion machine room of the power plant behind the filler b36, and the top of the frequency conversion machine room of the power plant corresponding to the multiple floor air supply ports 35 is provided with an air exhaust port 22, and the frequency conversion machine room of the power plant opposite to the fan wall 18 An exhaust duct 23 is connected to the wall of the machine room, and the exhaust duct 23 is connected to the air inlet 21 of the second evaporative cooling air-conditioning unit 26, and the air supply port of the second evaporative cooling air-conditioning unit 26 is sent to multiple floors through the buried air supply duct 32. The tuyere 35 is connected.

A plurality of centrifugal spray fans 19 are evenly arranged. A plurality of floor air outlets 35 are evenly arranged.

The air inlet side of the fan wall 18 is provided with a filter b15.

The structure of the first evaporative cooling water chiller 1 is shown in Figure 1, which includes an organic unit casing, and a fresh air outlet 38 is arranged on the side wall of the unit casing, and filters a14 are arranged in the casing according to the flow direction of the fresh air after entering 1. The first tube-type indirect evaporative cooler and the direct evaporative cooler. The top of the first tube-type indirect evaporative cooler is sequentially provided with a water baffle a39 and the fan a2, and the top of the direct evaporative cooler is sequentially provided with a water baffle b4 and Fan b3, fan a2 and fan b3 are all provided with air outlets on the top wall of the casing of the unit corresponding to fan b3.

The first tubular indirect evaporative cooler includes a vertical heat exchange tube group, a water distributor is arranged above the vertical heat exchange tube group, and a circulating water tank b11 is installed below the vertical heat exchange tube group, and the circulating water tank b11 passes through The first water supply pipe is connected to the water distributor, and a water pump d13 is arranged on the first water supply pipe.

The direct evaporative cooler includes filler a6, nozzle a5 is arranged above the filler a6, and a circulating water tank a8 is arranged under the filler a6, and the circulating water tank a8 is connected to the nozzle a5 through the second water supply pipe, and a water pump is arranged on the second water supply pipe a7; the circulating water tank a8 is connected to the spray unit 16 in the centrifugal spray fan 19 through the first water pipe G1, and the circulating water tank a8 is connected to the surface cooler 25 in the second evaporative cooling air conditioning unit 26 through the second water pipe G2 and the third water pipe G3 respectively , The circulating water tank c33 is connected.

Packing a6 is a triangular packing.

The first water pipe G1 is provided with a water pump b9; the second water pipe G2 is provided with a water pump c10; the third water pipe G3 is provided with a water pump e34.

The centrifugal spray fan 19 is made up of a fan unit 17 and a spray unit 16 arranged in sequence according to the air inlet direction.

The second evaporative cooling air-conditioning unit 26 includes an air-conditioning housing. Air inlets 21 and air supply ports are respectively arranged on the opposite side walls of the air-conditioning housing. Filters c24 and meters are arranged in the air-conditioning housing according to the flow direction of the air after entering. Cooler 25, the second tube-type indirect evaporative cooler and fan d30, the top of the second tube-type indirect evaporative cooler is provided with water baffle c28, fan c27 in sequence, and the top wall of the air conditioner housing corresponding to fan c27 is provided with a row Windshield.

The second tubular indirect evaporative cooler includes a heat exchange tube group 31. The heat exchange tube group 31 is composed of a plurality of horizontally arranged heat exchange tubes. A nozzle b29 is arranged above the heat exchange tube group 31. The nozzle b29 passes through the pipe and The surface cooler 25 is connected, and a circulating water tank c33 is arranged below the heat exchange tube group 31 .

The effect of each part in the utility model evaporative cooling air conditioner is as follows:

A plurality of centrifugal spray fans 19 are installed on the fan wall 18. The centrifugal spray fans 19 integrate the spray treatment and delivery of outdoor fresh air. The spray volume and air supply volume of the centrifugal spray fans 19 can be flexibly and individually controlled according to the humidity requirements in the machine room. The waste of energy is avoided, and at the same time, the filtration and spray treatment of outdoor fresh air can reduce the impact of impurities such as coal ash around the power plant on the air quality in the frequency conversion machine room of the power plant to a certain extent.

One side of the ductless air supply area 20 is provided with packing b36, which can increase the contact area between mist and air, prevent excess mist from entering the frequency conversion machine room of the power plant, and has a certain filtering effect.

The first evaporative cooling chiller 1 produces high-temperature cold water, and the produced high-temperature cold water is supplied to the centrifugal spray fan 19, which can not only increase the humidity in the frequency conversion machine room 21 of the power plant, but also have a certain cooling effect; the first evaporative cooling chiller 1. The standpipe type indirect evaporative cooler is used inside, which can avoid the clogging of pipes by impurities such as coal ash around the power plant, and improve the efficiency of the unit to produce high-temperature cold water.

The second evaporative cooling air-conditioning unit 26 is used to deal with the exhaust air in the frequency conversion machine room of the power plant. Taking advantage of the clean exhaust air, it performs two-stage isohumidity cooling treatment, and then sends it in through the buried air supply pipe 32 from the floor air supply outlet 35. In the frequency conversion machine room of the power plant, the buried air supply pipe 32 can reduce the cooling loss of the air supply and avoid the waste of energy. Moreover, the water used by the second evaporative cooling air-conditioning unit 26 comes from the high-temperature cold water produced by the first evaporative cooling chiller 1 , which has a better treatment effect on exhaust air.

The working process of the utility model evaporative cooling air conditioner is as follows:

1. Independent temperature control system:

The exhaust air in the frequency conversion machine room of the power plant is sent to the second evaporative cooling air-conditioning unit 26 through the exhaust duct 23, and undergoes heat and moisture exchange with water through the surface cooler 25, and the air is cooled by isohumidity. In the heat exchange tube group 31 of the indirect evaporative cooler, a part enters the heat exchange tube group 31, the secondary air outside the tube and the spray water perform heat and moisture exchange to take away the heat of the primary air in the tube, and the primary air in the tube is wet-cooled, and then The air is sent into the frequency conversion machine room of the power plant through the buried air supply pipe 32 by the floor air supply port 35 .

2. Humidity independent control system:

The filter 15 is installed outside the fan wall 18 of the frequency conversion machine room of the power plant, and multiple centrifugal spray fans 19 are evenly installed on the fan wall 18. The high-temperature cold water produced by the first evaporative cooling chiller 1 is supplied to all the centrifugal spray fans 19 and centrifugal spray fans. The spray unit 16 of 19 utilizes the centrifugal force to produce ultra-fine mist droplets, and the mist droplets are sent to the ductless air supply area 20 by the airflow blown by the fan unit 17 of the centrifugal spray fan 19, and at the same time, the surface wind speed of the liquid is increased, and the gas molecules are accelerated. Diffusion, and then enter the frequency conversion machine room of the power plant to increase the humidity of the machine room, and at the same time play a certain cooling effect.

3. Circulating water system 1:

The circulating water tank a8 and the circulating water tank b11 are installed in the first evaporative cooling chiller 1, and the outdoor air is filtered through the filter a14 in the first evaporative cooling chiller 1, and part of the filtered air enters the vertical heat exchange tube group 12, and a part Entering the outside of the vertical heat exchange tube group 12, the circulating water in the circulating water tank b11 is sent to the water distributor above the vertical heat exchange tube group 12 by the water pump d13, and is sprayed by the water distributor. The secondary air in the tube and the spray water Carry out heat and moisture exchange to take away the heat of the primary air outside the pipe, and pour water into the circulating water tank b11 below. The exchange produces high-temperature cold water, and the high-temperature cold water produced falls into the circulating water tank a8 below, a part of which is supplied to the second evaporative cooling air-conditioning unit 26, and a part of which is supplied to the centrifugal spray fan 19.

4. Circulating water system 2:

A circulating water tank c33 and a water pump e34 are arranged in the second evaporative cooling air-conditioning unit 26, and the high-temperature cold water produced by the first evaporative cooling chiller 1 is sent to the surface cooler 25 in the second evaporative cooling air-conditioning unit 26 by the water pump c10. The exhaust air in the frequency conversion machine room of the cooling power plant is sprayed outside the heat exchange tube group 31 by the nozzle b29, and performs heat and moisture exchange with the secondary air to take away the heat of the primary air in the tube and then falls into the lower circulating water tank c33 and water pump e34 Send the water in the circulating water tank c33 back to the first evaporative cooling chiller unit 1 .

In the evaporative cooling air-conditioning device of the present utility model, the second evaporative cooling air-conditioning unit 26 is set to perform isohumidity and cooling treatment on the clean exhaust air in the frequency conversion machine room of the power plant, and then sent into the frequency conversion machine room of the power plant through the buried air supply pipe 32, The centrifugal spray fan 19 is arranged on the fan wall 18 in the frequency conversion machine room of the power plant, which can process the outdoor fresh air filtered by the filter b15, and the treated air enters the frequency conversion machine room of the power plant after passing through the filler b36. The high-temperature cold water used by the centrifugal spray fan 19 and the centrifugal spray fan 19 all come from the first evaporative cooling water chiller unit 1. Through the second evaporative cooling air-conditioning unit 26 for the clean exhaust of the frequency conversion machine room of the power plant and the treatment of the outdoor fresh air by the centrifugal spray fan 19, the independent control of temperature and humidity in the frequency conversion machine room of the power plant is realized, and the high temperature cold water supplied by the first evaporative cooling chiller 1 To a certain extent, it improves the processing effect of the exhaust air of the computer room and the outdoor fresh air, which not only meets the temperature and humidity requirements of the computer room, but also avoids the waste of energy, and at the same time contributes to the country's energy saving and emission reduction.

Claims (10)

1. the humiture that is applicable to frequency conversion machine room is independently controlled vaporizing and cooling air conditioning device, it is characterized in that, include the first evaporative cooling handpiece Water Chilling Units (1) and the second Evaporative Cooling Air Conditioning unit (26) that are arranged at outside power plant frequency conversion machine room, also include the multiple centrifugal spray fans (19) that are arranged on power plant frequency conversion machine room fan wall (18), in the power plant frequency conversion machine room at described fan wall (18) rear, there is filler b (36), the below of described filler b (36) is provided with water tank (37), between described fan wall (18) and filler b (36), form without pipeline blow zones (20), on the power plant frequency changer house floor at described filler b (36) rear, be provided with multiple floor air supply registers (35), frequency changer roof, the power plant portion that multiple floor air supply registers (35) are corresponding is provided with exhaust outlet (22), on the power plant frequency conversion machine room wall relative with fan wall (18), be connected with exhaust duct (23), described exhaust duct (23) is connected with the air inlet (21) of the second Evaporative Cooling Air Conditioning unit (26), the air outlet of the second Evaporative Cooling Air Conditioning unit (26) is connected with multiple floor air supply registers (35) by buried air supply duct (32).

2. vaporizing and cooling air conditioning device according to claim 1, is characterized in that, the inlet side of described fan wall (18) is provided with filter b (15).

3. vaporizing and cooling air conditioning device according to claim 1, is characterized in that, described centrifugal spray fan (19) is made up of the fan unit setting gradually by air intake direction (17) and sprayer unit (16).

4. vaporizing and cooling air conditioning device according to claim 1, it is characterized in that, described the first evaporative cooling handpiece Water Chilling Units (1), include machine unit shell, on described machine unit shell one sidewall, be provided with fresh wind port (38), in described machine unit shell, enter rear flow direction by new wind and be disposed with filter a (14), the first tube type indirect evaporative cooler and direct evaporative cooler, the top of described the first tube type indirect evaporative cooler is disposed with water fender a (39) and blower fan a (2), the top of described direct evaporative cooler is disposed with water fender b (4) and blower fan b (3), on the machine unit shell roof of described blower fan a (2) and blower fan b (3) correspondence, be provided with air port.

5. vaporizing and cooling air conditioning device according to claim 4, it is characterized in that, described the first tube type indirect evaporative cooler, include vertical heat exchanging pipe group, the top of described vertical heat exchanging pipe group is provided with water-locator, the below of described vertical heat exchanging pipe group is provided with cyclic water tank b (11), and described cyclic water tank b (11) is connected with water-locator by the first feed pipe, is provided with water pump d (13) on described the first feed pipe.

6. vaporizing and cooling air conditioning device according to claim 4, it is characterized in that, described direct evaporative cooler, include filler a (6), the top of described filler a (6) is provided with nozzle a (5), the below of described filler a (6) is provided with cyclic water tank a (8), described cyclic water tank a (8) is connected with nozzle a (5) by the second feed pipe, is provided with water pump a (7) on described the second feed pipe;

Described cyclic water tank a (8) is connected with centrifugal spray fan (19) by the first water pipe (G1), and described cyclic water tank a (8) is connected with surface cooler (25), cyclic water tank c (33) in the second Evaporative Cooling Air Conditioning unit (26) by the second water pipe (G2), the 3rd water pipe (G3) respectively.

7. vaporizing and cooling air conditioning device according to claim 6, is characterized in that, described filler a (6) is triangle filler.

8. vaporizing and cooling air conditioning device according to claim 6, is characterized in that, is provided with water pump b (9) on described the first water pipe (G1); On described the second water pipe (G2), be provided with water pump c (10); On described the 3rd water pipe (G3), be provided with water pump e (34).

9. according to claim 1, 2, vaporizing and cooling air conditioning device described in 3 or 4, it is characterized in that, described the second Evaporative Cooling Air Conditioning unit (26), include air-conditioner housing, described air-conditioner housing is respectively arranged with air inlet (21) and air outlet on relative two side, in described air-conditioner housing, enter rear flow direction by air and be disposed with filter c (24), surface cooler (25), the second tube type indirect evaporative cooler and blower fan d (30), the top of described the second tube type indirect evaporative cooler is disposed with water fender c (28), blower fan c (27), on the air-conditioner housing roof of described blower fan c (27) correspondence, be provided with ventilation window.

10. vaporizing and cooling air conditioning device according to claim 9, it is characterized in that, described the second tube type indirect evaporative cooler, include set of heat exchange tubes (31), described set of heat exchange tubes (31) is made up of many horizontally disposed heat exchanger tubes, the top of described set of heat exchange tubes (31) is provided with nozzle b (29), described nozzle b (29) is connected with surface cooler (25) by pipeline, and the below of described set of heat exchange tubes (31) is provided with cyclic water tank c (33).