CN211295936U

CN211295936U - Air conditioning unit cooling and ventilating system for low-voltage compensation capacitor cabinet of submerged arc furnace

Info

Publication number: CN211295936U
Application number: CN202020308877.8U
Authority: CN
Inventors: 陶祥生
Original assignee: WUXI BEIKE AUTOMATION TECHNOLOGY CO LTD
Current assignee: WUXI BEIKE AUTOMATION TECHNOLOGY CO LTD
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-08-18
Anticipated expiration: 2030-03-13

Abstract

The air conditioning unit cooling and ventilating system comprises an evaporative air cooler, a direct-expansion type refrigeration air conditioner, a centrifugal fan and a cold air box, wherein an air outlet of the evaporative air cooler is communicated with a first air inlet of the cold air box through a first air guide pipeline, an air outlet of the direct-expansion type refrigeration air conditioner is communicated with a second air inlet of the cold air box through a second air guide pipeline, an air outlet of the cold air box is communicated with an air inlet of the centrifugal fan through a third air guide pipeline, an air outlet of the centrifugal fan is communicated with an air inlet of the capacitor box through a fourth air guide pipeline, and the capacitor box is further provided with an air outlet. The utility model discloses an air conditioning unit cooling and ventilating system for hot stove low pressure compensation capacitor box in ore deposit can effectively reduce wind regime temperature, humidity and dust content, and is better to the heat dissipation cooling effect of low pressure compensation capacitor box, and dust content is showing and is reducing, makes the interior components and parts of capacitor box be in operation under the better environment, reduces the device fault rate, makes the safe long-term stable operation of low pressure compensation equipment.

Description

Air conditioning unit cooling and ventilating system for low-voltage compensation capacitor cabinet of submerged arc furnace

Technical Field

The utility model relates to a hot stove technical field in ore deposit, more specifically relates to an air conditioning unit cooling and ventilating system that is used for hot stove low pressure compensation capacitor box in ore deposit.

Background

With the maturity of low-voltage compensation technology, low-voltage compensation equipment is greatly popularized and accepted and determined by domestic large submerged arc furnace user units. When the low-voltage compensation equipment of the submerged arc furnace works, the heating value is large, the environmental temperature of the equipment is high, and the environmental dust content is large. Most of the ore-smelting furnaces are used in western regions in China, such as inner Mongolia, Shaanxi, Ningxia and Xinjiang, and in foreign countries, such as south Africa and other high-temperature regions. Wherein the outdoor temperature of some places in summer (such as hami, Changji, Aksu and the like in China) is as high as 40-55 ℃. Although the components of the low-voltage compensation equipment of the submerged arc furnace have higher temperature resistance and dust resistance compared with the components of the conventional compensation equipment, the components are in the environment of high temperature and high dust for a long time and are one of the important reasons for the relatively short service life of the components of the low-voltage compensation equipment. Therefore, the temperature of the components of the low-voltage compensation equipment is reduced, and the working environment of the components is improved, which is a necessary research direction for product designers.

The solution currently used by the applicant (patent No. 201821607336.4) is: the low-voltage compensation cabinet is provided with a ventilation air duct, the air duct is connected with a ventilation air pipe through a high-power centrifugal fan, and a relatively low-temperature clean natural air source is introduced into the capacitor cabinet to reduce the working temperature of components; this electric capacity cabinet malleation radiating mode is more high-efficient reasonable. This scheme can keep the positive pressure of cooling air in the capacitor box, can obviously reduce the dust in the cabinet and pile up, but the wind regime that heat abstractor can get is the natural wind regime that compares capacitor box operational environment temperature slightly lower, consequently has following shortcoming: the function of reducing the temperature of the natural wind source is not provided. In summer, the environmental temperature in most domestic areas exceeds 35-40 ℃, the temperature in other global areas (such as Africa) is higher, and the cooling effect of elements in the cabinet is not obvious; the dust of the wind source that the device ventilates does not have and filters through the dust removal, and the dust in the electric capacity cabinet also can pile up the increase through long-time accumulation. Moreover, the scheme has no dehumidification function. In areas with high air humidity, the high temperature and high humidity in summer cause that the service life of components of low-voltage compensation equipment is shortened and the failure rate is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cooling and ventilation system of air conditioning unit for hot stove low pressure compensation capacitor box in ore deposit is proposed in view of above-mentioned problem, its aim at provides.

According to the utility model discloses an aspect provides an air conditioning unit cooling and ventilating system for hot stove low pressure compensation electric capacity cabinet in ore deposit, including evaporation formula air-cooler, directly expand formula refrigeration air conditioner, centrifugal fan, cold-blast box, the air outlet of evaporation formula air-cooler through first induced air pipeline with the first air intake intercommunication of cold-blast box, directly expand formula refrigeration air conditioner the air outlet through second induced air pipeline with the second air intake intercommunication of cold-blast box, the air outlet of cold-blast box through third induced air pipeline with centrifugal fan's air intake intercommunication, centrifugal fan's air outlet passes through the air intake intercommunication of fourth induced air pipeline with the electric capacity cabinet, the electric capacity cabinet still is provided with the air outlet.

According to the utility model discloses a preferred embodiment, the evaporation formula air-cooler is arranged in the open air of keeping away from the electric capacity cabinet, partly being located outdoors of first induced air pipeline, another part is located the indoor at electric capacity cabinet place.

According to the utility model discloses a preferred embodiment, the air intake of electric capacity cabinet set up in the lower part or the bottom of electric capacity cabinet, the air outlet of electric capacity cabinet set up in the upper portion or the top of electric capacity cabinet.

According to the utility model discloses a preferred embodiment, the evaporation formula air-cooler includes the wet curtain of evaporation and is located the dustproof filter screen in the wet curtain outside of evaporation.

According to the utility model discloses a preferred embodiment, the formula of directly expanding refrigeration air conditioner is provided with the dustproof filter screen of two-stage.

According to a preferred embodiment of the invention, at least a part of the first draft tube is constructed of a soft tube.

According to a preferred embodiment of the present invention, the first induced air duct, the second induced air duct, the third induced air duct and the fourth induced air duct are each constructed by a soft duct.

The utility model discloses an air conditioning unit cooling ventilation system for hot stove low pressure compensation capacitor box in ore deposit is applicable to the high temperature and high humidity area (domestic area includes Chongqing, Wuhan, Yunnan, Guizhou etc.; foreign area includes African fruit of Congo, Asia India, Indonesia, vietnamese etc. ground), can effectively reduce wind regime temperature, humidity and dust content, it is better to the heat dissipation cooling effect of low pressure compensation capacitor box, dust content is showing to be reduced, make the interior components and parts of capacitor box move under the better environment, reduce the device fault rate, make low pressure compensation equipment safe long-term stable operation. The cooling air inlet volume, temperature and humidity can completely meet the cooling requirement of the capacitor cabinet, the air inlet temperature is reduced by 8-16 ℃ compared with the ambient temperature, and the air inlet humidity is less than 70%; the device is stable in operation, cooling air can be fully purified, and the working environment of components in the capacitor cabinet is improved; the maintenance is simple and convenient. The adopted direct expansion type refrigeration air conditioner is an all-air system, the system only consists of an external machine, an internal machine and related connecting pieces, secondary refrigerants are not needed, and matching equipment such as a water pump, a cooling tower, a condensation drainage pipeline and the like is not needed; no machine room is needed, and the system is convenient to install. After the refrigerating unit is matched with a dust removal evaporation type air cooler for use, the refrigerating unit has strong refrigerating capacity, high efficiency and complete functions, and can conveniently realize multiple functions of air purification, dust removal, dehumidification, temperature reduction, air volume regulation and the like; can cope with various environments in most regions of the world. When the environment changes and only the dust removal evaporation type air cooler can meet the working condition, the refrigeration air conditioning unit can be closed, and the energy consumption is reduced.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows an air conditioning unit cooling and ventilating system for a low-voltage compensation capacitor cabinet of a submerged arc furnace according to a first embodiment of the invention;

fig. 2 shows an air conditioning unit cooling and ventilating system for a low-voltage compensation capacitor cabinet of a submerged arc furnace according to a second embodiment of the invention;

fig. 3 shows a schematic diagram of a direct-expansion type refrigeration air conditioner of an air conditioning unit cooling and ventilating system for a submerged arc furnace low-voltage compensation capacitor box according to the utility model discloses.

Detailed Description

Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the relative arrangement of parts, numerical representations and numerical values described in these embodiments does not limit the scope of the present invention unless specifically stated otherwise. It should be noted that the following embodiments do not limit the scope of the present invention recited in the claims, and not all combinations of features described in the embodiments are essential to the present invention.

According to the utility model discloses an embodiment provides an air conditioning unit cooling and ventilation system for hot stove low pressure compensation capacitor box in ore deposit. As shown in fig. 1 and fig. 2, the utility model discloses an air conditioning unit cooling and ventilating system for hot stove low pressure compensation electric capacity cabinet in ore deposit includes evaporative air-cooler 1, directly expand formula refrigeration air conditioner (not shown), centrifugal fan 2, cold air box 3, evaporative air-cooler 1's air outlet communicates through the first air intake of first induced air pipeline 4 with cold air box 3, directly expand formula refrigeration air conditioner's air outlet passes through second induced air pipeline 5 and cold air box 3's second air intake intercommunication, the air outlet of cold air box passes through third induced air pipeline 6 and centrifugal fan 2's air intake intercommunication, centrifugal fan 2's air outlet passes through fourth induced air pipeline 7 and electric capacity cabinet 8's air intake intercommunication, electric capacity cabinet 8 still is provided with the air outlet.

Under a high-humidity environment with humidity exceeding 80%, corrosion of metal parts of components of the capacitor cabinet is greatly accelerated, and organic products, bakelite products, electronic module instruments and the like are mildewed; when the device is serious, the insulation level of the device is reduced, even the surface of the device is in a charged state, and potential threats are formed to personal and equipment safety. The low-pressure compensation cooling device of the submerged arc furnace adopts a dust removal evaporation type air cooler, although the introduced air source can be cooled and dedusted, the dehumidification effect is not realized; in areas with high air humidity (such as Chongqing, Wuhan, Yunnan, Guizhou and the like in China and African Congo abroad, Asia India, Indonesia, Vietnam and the like), the best effect cannot be achieved by using the cooling mode alone. Therefore, the utility model discloses the increase has designed the refrigerated scheme of low pressure compensation cooling adoption air conditioning unit. On the basis of positive air pressure heat dissipation of the existing capacitor cabinet, refrigeration air-conditioning unit equipment is designed at the position of an air taking source port, and clean, low-temperature and low-humidity cooling air is provided for low-pressure compensation equipment by the refrigeration air-conditioning unit. The refrigerating unit not only can lower the air temperature, but also can reduce the air humidity, and ensure the safe operation of the compensation equipment. The utility model discloses according to hot stove low pressure compensation arrangement's in ore deposit environment and operation characteristics, adopt direct expansion combination formula air handling unit as malleation air cooling device's wind regime treatment facility, as shown in figure 3. The direct expansion air conditioning unit is a primary refrigerant system, namely, the refrigerant directly completes heat exchange with air to be treated without secondary heat exchange. The heat exchanger with fins on the outdoor machine side of the unit is used as a condenser, the fins on the indoor machine side are used as an evaporator, high-temperature gas of a refrigerant discharged by a compressor is condensed into liquid in the condenser of the outdoor machine, throttled and decompressed by an expansion valve to form a low-temperature gas-liquid mixture, flows into the heat exchanger of the indoor machine, absorbs heat, evaporates and returns to the compressor, and a refrigeration cycle is completed; meanwhile, the fresh air of the air source is cooled and cooled after passing through the evaporator of the indoor unit, and the treated cold air is output by the ventilation pipeline of the box type indoor unit. The utility model discloses in the cooling system who disposes dust removal evaporation formula air-cooler, adopt refrigeration air conditioning unit as dehumidification refrigeration subassembly, use with dust removal evaporation formula air-cooler is supporting, and two equipment output cooling air are to the cold air tank, introduce the hot stove low pressure compensation capacitor box in ore deposit by the cold air tank again.

According to the preferred embodiment of the present invention, as shown in fig. 2, the evaporative air cooler 1 is disposed outdoors far away from the capacitor box 8, and one part of the first air guiding duct 4 is located outdoors and the other part is located indoors where the capacitor box 8 is located. The arrangement mode is particularly suitable for the occasions of arranging the electric accommodating chambers specially used for placing the capacitor cabinets. For applications without an electrical compartment, such as capacitor cabinets in large buildings and other relatively open environments, an open cooling arrangement as shown in fig. 1 is preferred.

According to the utility model discloses a preferred embodiment, the air intake of electric capacity cabinet 8 sets up in the lower part or the bottom of the cabinet body, and the air outlet sets up in the upper portion or the top of the cabinet body to can carry out abundant ventilation cooling to all parts in the cabinet body.

According to the utility model discloses a preferred embodiment, evaporation formula air-cooler 1 includes the wet curtain of evaporation and is located the dustproof filter screen in the wet curtain outside of evaporation.

According to the utility model discloses a preferred embodiment, as shown in fig. 3, the formula of directly expanding refrigeration air conditioner is provided with the dustproof filter screen of two-stage, and every level of dustproof filter screen sets up differential pressure sensor, when the differential pressure value superelevation, changes or washs the filter. Preferably, the two-stage filtration all adopts buckle formula design, and it is convenient to change.

According to a preferred embodiment of the invention, at least a part of the first draft tube 4 is constructed of a soft tube. Further preferably, the first, second, third and

fourth draft ducts

4, 5, 6, 7 are all constructed of soft duct. For example, plastic or rubber tubing.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The air conditioning unit cooling and ventilating system for the submerged arc furnace low-voltage compensation capacitor box is characterized by comprising an evaporative air cooler, a direct-expansion type refrigeration air conditioner, a centrifugal fan and a cold air box, wherein an air outlet of the evaporative air cooler is communicated with a first air inlet of the cold air box through a first air guide pipeline, an air outlet of the direct-expansion type refrigeration air conditioner is communicated with a second air inlet of the cold air box through a second air guide pipeline, an air outlet of the cold air box is communicated with an air inlet of the centrifugal fan through a third air guide pipeline, an air outlet of the centrifugal fan is communicated with an air inlet of the capacitor box through a fourth air guide pipeline, and the capacitor box is further provided with an air outlet.

2. The air conditioning unit cooling and ventilating system for the submerged arc furnace low-voltage compensation capacitor box as claimed in claim 1, wherein the evaporative air cooler is arranged outdoors far away from the capacitor box, and one part of the first air guide duct is located outdoors and the other part of the first air guide duct is located indoors where the capacitor box is located.

3. The cooling and ventilating system of claim 1, wherein the air inlet of the capacitor box is disposed at the bottom of the capacitor box, and the air outlet of the capacitor box is disposed at the top of the capacitor box.

4. The cooling and ventilating system for the low-voltage compensation capacitor cabinet of the submerged arc furnace as claimed in claim 1, wherein the evaporative air cooler comprises an evaporative wet curtain and a dustproof filter screen positioned outside the evaporative wet curtain.

5. The cooling and ventilating system of an air conditioning unit for a low-voltage compensation capacitor cabinet of a submerged arc furnace as claimed in claim 1, wherein the direct-expansion type refrigeration air conditioner is provided with two-stage dustproof filter screens.

6. The air conditioning unit cooling ventilation system for a submerged arc furnace low voltage compensation capacitor cabinet as claimed in claim 1, wherein at least a portion of the first induced air duct is constructed of a soft duct.

7. The cooling and ventilating system for the low-voltage compensation capacitor cabinet of the submerged arc furnace as claimed in claim 1, wherein the first induced air duct, the second induced air duct, the third induced air duct and the fourth induced air duct are all constructed by soft ducts.