CN210468449U

CN210468449U - Control cabinet with explosion-proof function

Info

Publication number: CN210468449U
Application number: CN201921525803.3U
Authority: CN
Inventors: 杨雪龙; 李兆庭; 计力军
Original assignee: Wuxi Huanyu Electric Co Ltd
Current assignee: Wuxi Huanyu Electric Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-05-05
Anticipated expiration: 2029-09-12

Abstract

The utility model belongs to the technical field of controlgear, especially, be a switch board with explosion-proof function, be in including switch board body and setting the base of switch board body bottom, it has the cabinet door to articulate through rectangular shape hinge on the switch board body, be equipped with the air intake on the left side wall of switch board body, from the top down is equipped with air outlet and return air inlet in proper order on the right side wall of switch board body, be equipped with first fan and the second fan of being connected with the air intake respectively on the inner wall of switch board body, the top of switch board body is equipped with dust filtering component. The utility model discloses can purify gas, inside effectively preventing the gas access control cabinet body that has the dust, not influenced by the dust environment, dust explosion-proof ability is good, and strong adaptability has guaranteed electrical equipment's safety and stability operation, has improved explosion-proof cabinet structural strength, reaches explosion-proof requirement, satisfies the high-efficient refrigeration effect of switch board simultaneously.

Description

Control cabinet with explosion-proof function

Technical Field

The utility model relates to a controlgear technical field specifically is a switch board with explosion-proof function.

Background

In the known technical field, with the development of national economy, explosion-proof electrical products are more widely applied to flammable and explosive places in the industries such as petroleum, chemical engineering, military industry, coal, textile, medicine, food processing, marine transportation and the like, and safe production and civilized production are indispensable parts in modern industrial production. In the prior art, an explosion-proof control cabinet is applied, because a cabinet body needs to meet explosion-proof requirements, the sealing is tight, the heat dissipation area of the cabinet body is small, and the heat dissipation of elements in the cabinet generally adopts a natural heat dissipation mode of the cabinet body. Along with the development of industrial and mining enterprises, the capacity of electrical equipment is continuously improved, the starting mode generally adopts soft start or variable frequency start, the self heat productivity is larger when the soft start and the frequency converter work, for elements such as the soft start and the frequency converter with the internal power of the cabinet body larger than 35KW, the heat accumulation in the explosion-proof control cabinet is caused under the working conditions of summer and heavy load of the equipment due to the special requirements of the explosion-proof performance, small installation space and poor heat dissipation, and when the temperature in the cabinet exceeds 60 ℃, the overtemperature protection is carried out on the elements in the cabinet, so that the explosion-proof cabinet product can not work normally.

Chinese patent CN201320571639.6 discloses an explosion-proof control cabinet of refrigeration type includes the rectangle cabinet body the internal electric control component device that is equipped with of rectangle cabinet the internal both sides that just are located electric control component device of rectangle cabinet are equipped with air conditioner condensing coil respectively, corresponding to air conditioner condensing coil's position the both sides of the rectangle cabinet body are equipped with air intake and air outlet respectively air intake department is equipped with air inlet fan air outlet department is equipped with air outlet fan, form the air convection between air inlet fan and the air outlet fan the internal top that just is located electric control component device of rectangle cabinet is equipped with fire-retardant oil storage box the bottom of the rectangle cabinet body is equipped with the comdenstion water and collects the box. Above-mentioned structure possesses simple structure, reasonable in design's characteristics, through the forced cooling of air conditioner to the cooperation air convection can carry out forced cooling to the temperature in the explosion-proof control cabinet, avoids overheated and influence the condition of use, and the air convection circulation is effectual, is particularly useful for the explosion-proof control cabinet that is used for the high power requirement. However, the structure directly introduces external natural wind to form air convection, and the air conditioner is used for forced cooling, and dust mixed in the external natural wind directly enters the interior of the explosion-proof cabinet body under the action of the air inlet fan, so that the dust in the cabinet body is easy to accumulate after long-time use, and faults such as short circuit of electronic and electrical components are easily caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a switch board with explosion-proof function has solved the direct external natural wind of introduction of traditional explosion-proof switch board of refrigeration type and has formed the air convection, and the cooperation air conditioner carries out forced cooling, and because the dust that mix with in the outside natural wind directly gets into the internal portion of explosion-proof cabinet under the effect of air inlet fan, easily leads to piling up of the internal dust of cabinet after long-time the use, very easily arouses the problem of failures such as electron, electrical component short circuit.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a control cabinet with an explosion-proof function comprises a control cabinet body and a base arranged at the bottom of the control cabinet body, wherein a cabinet door is hinged on the control cabinet body through a long-strip-shaped hinge, an air inlet is formed in the left side wall of the control cabinet body, an air outlet and an air return port are sequentially formed in the right side wall of the control cabinet body from top to bottom, a first fan and a second fan which are respectively connected with the air inlet and the air outlet are arranged on the inner wall of the control cabinet body, a dust filtering assembly is arranged at the top of the control cabinet body and consists of a plate frame filter, a film filter and an active carbon filter, the plate frame filter, the film filter and the active carbon filter are sequentially connected in series through an exhaust pipeline, a third fan is arranged at the air inlet end of the plate frame filter, and the air outlet end of the active carbon filter is connected with the air inlet through an air supply pipe, an air-conditioning refrigeration assembly is arranged on the right side wall of the control cabinet body and comprises a cabinet body, an access door, an air-conditioning compressor, a condenser, a fourth fan, an evaporator and a fifth fan, the access door is hinged on the cabinet body, the air-conditioning compressor, the condenser and the evaporator are respectively arranged in the cabinet body through mounting plates, the cabinet body is provided with a cold air outlet communicated with the air return inlet, the evaporator and the condenser are sequentially arranged at one side close to the cold air outlet, the fourth fan is arranged on one side of the condenser far away from the evaporator, the air inlet end of the fourth fan is connected with the blast pipe through a branch pipe, the fifth fan is arranged on one side of the evaporator far away from the cold air outlet, the air-conditioning compressor is respectively connected with the condenser and the evaporator through a refrigeration pipeline, the condenser is connected with the evaporator through a pipeline, and reinforcing angle plates are fixedly mounted at the corners of the inner wall of the control cabinet body through screws.

As an optimal technical scheme of the utility model, the top and the bottom of switch board body are equipped with entrance hole and wire hole respectively.

As an optimized technical scheme of the utility model, the inside of entrance hole and wire hole all is equipped with dustproof line stopper of crossing.

As a preferred technical scheme of the utility model, the top that corresponds first air outlet on the lateral wall of switch board body inlays and is equipped with the manometer that is used for detecting interior pressure, and one side of manometer is equipped with bee calling organ.

As an optimal technical scheme of the utility model, be equipped with temperature detect probe and controller on the inner wall of switch board body respectively, the controller respectively with first fan, second fan, third fan, air condition compressor, fourth fan, evaporimeter, fifth fan and temperature detect probe electric connection.

(III) advantageous effects

Compared with the prior art, the utility model provides a switch board with explosion-proof function possesses following beneficial effect:

1. this switch board with explosion-proof function through setting up dust filtering component at switch board body top, purifies gas through sheet frame filter, membrane filter core filter and active carbon filter promptly, and inside the gas access switch board body that effectively prevents to have the dust, not influenced by the dust environment, dust explosion-proof ability is good, and strong adaptability has guaranteed electrical equipment's safety and stability operation.

2. This switch board with explosion-proof function hinges the cabinet door on the switch board body through rectangular shape hinge to strengthen the scute in each edge installation of inner wall of switch board body, improved explosion-proof cabinet structural strength, reach explosion-proof requirement.

3. This switch board with explosion-proof function, under the effect of first fan and second fan, gaseous quick flow to at the inside air convection that forms of switch board body, improved the radiating effect, through setting up dust filtering component, the internal portion of cabinet is carried to the gas after will purifying through the branch pipe, makes the internal constant voltage that keeps of cabinet, and continuously carries cold wind to the inside of switch board body through fifth fan, reaches refrigeration effect, satisfies the high-efficient refrigeration effect of switch board.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the control cabinet body of the present invention;

fig. 3 is the internal structure schematic diagram of the refrigeration assembly of the air conditioner of the present invention.

In the figure: 1. a control cabinet body; 2. a base; 3. a long strip-shaped hinge; 4. a cabinet door; 5. an air inlet; 6. an air outlet; 7. an air return opening; 8. a first fan; 9. a second fan; 10. a dust filter assembly; 1001. a plate frame filter; 1002. a membrane cartridge filter; 1003. an activated carbon filter; 11. a third fan; 12. an air supply pipe; 13. a branch pipe; 14. an air conditioning refrigeration assembly; 1401. a cabinet body; 1402. an access door; 1403. an air conditioning compressor; 1404. a condenser; 1405. a fourth fan; 1406. an evaporator; 1407. a fifth fan; 15. a screw; 16. reinforcing corner plates; 17. a wire inlet hole; 18. a wire outlet hole; 19. a temperature detection probe; 20. and a controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: a control cabinet with an explosion-proof function comprises a control cabinet body 1 and a base 2 arranged at the bottom of the control cabinet body 1, wherein a cabinet door 4 is hinged on the control cabinet body 1 through a strip-shaped hinge 3, an air inlet 5 is arranged on the left side wall of the control cabinet body 1, an air outlet 6 and an air return opening 7 are sequentially arranged on the right side wall of the control cabinet body 1 from top to bottom, a first fan 8 and a second fan 9 which are respectively connected with the air inlet 5 and the air outlet 6 are arranged on the inner wall of the control cabinet body 1, a dust filtering component 10 is arranged at the top of the control cabinet body 1, the dust filtering component 10 consists of a plate frame filter 1001, a film filter element 1002 and an active carbon filter 1003, the plate frame filter 1001, the film filter element 1002 and the active carbon filter 1003 are sequentially connected in series through an exhaust pipeline, a third fan 11 is arranged at the air inlet end of the plate frame filter 1001, the air outlet end of the active carbon filter 1003, an air-conditioning refrigeration assembly 14 is arranged on the right side wall of the control cabinet body 1, the air-conditioning refrigeration assembly 14 comprises a cabinet body 1401, an access door 1402, an air-conditioning compressor 1403, a condenser 1404, a fourth fan 1405, an evaporator 1406 and a fifth fan 1407, the access door 1402 is hinged on the cabinet body 1401, the air-conditioning compressor 1403, the condenser 1404 and the evaporator 1406 are respectively installed inside the cabinet body 1401 through mounting plates, a cold air outlet communicated with the air return opening 7 is arranged on the cabinet body 1401, the evaporator 1406 and the condenser 1404 are sequentially arranged on one side close to the cold air outlet, the fourth fan 1405 is arranged on one side of the condenser 1404 far away from the evaporator 1406, an air inlet end of the fourth fan 1405 is connected with the air supply pipe 12 through a branch pipe 13, the fifth fan 1407 is arranged on one side of the evaporator 1406 far away from the cold air outlet, the air-conditioning compressor 1403 is respectively connected with the condenser 1404 and the evaporator 1406 through, and reinforcing angle plates 16 are fixedly arranged at the corners of the inner wall of the control cabinet body 1 through screws 15.

In this embodiment, a dry filter and an expansion valve are further disposed on a pipeline between the condenser 1404 and the evaporator 1406 in the air-conditioning refrigeration assembly 14, the air-conditioning compressor 1403 compresses a low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant to be discharged, then the gas enters the condenser 1404 through the sealed pipeline, is condensed into a medium-temperature and high-pressure liquid refrigerant, flows into the dry filter to be dried and filtered, then is throttled and reduced in pressure by the expansion valve to become a low-temperature and low-pressure atomized refrigerant, enters the evaporator 1406, and is evaporated into a low-temperature and low-pressure gaseous refrigerant to reenter the compressor after absorbing a large amount of heat therein, and a next cycle. The whole working process is carried out repeatedly to achieve the purpose of reducing the temperature of the air around the evaporator 1406; the utility model discloses all be equipped with the mechanical lock on well cabinet door 4 and the access door 1402, all be equipped with the high strength sealing strip on the inner wall of cabinet door 4 and access door 1402.

Specifically, the top and the bottom of the control cabinet body 1 are respectively provided with a wire inlet hole 17 and a wire outlet hole 18; dustproof wire passing plugs are arranged in the wire inlet hole 17 and the wire outlet hole 18.

In this embodiment, entrance hole 17 is used for inside power cord introduction switch board body 1, and wire hole 18 is used for crossing the wiring on the electrical equipment, and the setting of dustproof crossing the wire stopper plays the inside that prevents the dust and get into switch board body 1 through entrance hole 17 and wire hole 18, reaches dirt-proof effect.

Specifically, a pressure gauge for detecting internal pressure is embedded above the side wall of the control cabinet body 1 corresponding to the first air outlet 6, and a buzzer is arranged on one side of the pressure gauge.

In this embodiment, detect the atmospheric pressure in the switch board body 1 through the manometer, carry out the buzzer warning through the buzzer when atmospheric pressure is too high.

Specifically, the inner wall of the control cabinet body 1 is provided with a temperature detection probe 19 and a controller 20, and the controller 20 is electrically connected with the first fan 8, the second fan 9, the third fan 11, the air-conditioning compressor 1403, the fourth fan 1405, the evaporator 1406, the fifth fan 1407 and the temperature detection probe 19.

In this embodiment, the temperature detection probe 19 uses a PT100 temperature sensor, the controller 20 uses an STC89C52 single chip microcomputer, the temperature in the control cabinet body 1 is detected in real time by the PT100 temperature sensor, the detection data is transmitted to the STC89C52 single chip microcomputer, when the detection data is higher than a threshold value, the STC89C52 single chip microcomputer controls the first fan 8, the second fan 9 and the third fan 11 to work, so that the purified gas flows rapidly in the control cabinet body 1 and forms air convection, thereby improving the heat dissipation effect, the STC89C52 single chip microcomputer controls the hollow pressure regulating compressor 1403 in the air-conditioning refrigeration assembly 14 to work, the air-conditioning compressor 1403 compresses the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant to be discharged, and then the gas enters the condenser 1404 through a sealed pipeline to be condensed into a medium-temperature and high-pressure liquid refrigerant and flows into a drying filter to be dried and filtered, and then is changed, The low-pressure mist refrigerant enters the evaporator 1406, and after absorbing a large amount of heat, the refrigerant is evaporated into a low-temperature low-pressure gas refrigerant and then enters the compressor again, the next cycle is started, and meanwhile, the low-temperature air is continuously blown into the control cabinet body 1 through the cold air outlet and the air return opening 7 by the fifth fan 1407, so that the purpose of refrigeration is achieved.

The utility model discloses a theory of operation and use flow: when the temperature detection probe 19 detects that the temperature inside the control cabinet body 1 is higher than a threshold value arranged in the controller 20, the controller 20 controls the third fan 11, the first fan 8 and the second fan 9 to work, the gas is sequentially filtered and purified through the plate frame filter 1001, the membrane filter element filter 1002 and the activated carbon filter 1003 to achieve the purposes of dust and magazine filtering, gas purification and disinfection, the purified gas enters the control cabinet body 1 through the air inlet 5, convection is formed between the first fan 8 and the second fan 9, high-temperature gas in the control cabinet body 1 is rapidly taken away, meanwhile, the controller 20 controls the air-conditioning compressor 1403 to work, the air-conditioning compressor 1403 compresses low-temperature and low-pressure gaseous refrigerant into high-temperature and high-pressure gaseous refrigerant to be discharged, then the gas enters the condenser 1404 through a sealed pipeline to be condensed into medium-temperature and high-pressure liquid refrigerant and flows into the drying filter to be dried, The refrigerant is filtered, throttled and depressurized by an expansion valve, then changed into low-temperature and low-pressure mist refrigerant, enters the evaporator 1406, is evaporated into low-temperature and low-pressure gas refrigerant after absorbing a large amount of heat in the refrigerant, enters the compressor again, starts the next cycle, and simultaneously is continuously blown into the control cabinet body 1 through a cold air outlet and an air return inlet 7 by a fifth fan 1407, so that the purpose of refrigeration is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a switch board with explosion-proof function, includes switch board body (1) and sets up base (2) of switch board body (1) bottom, its characterized in that: the cabinet door is characterized in that a cabinet door (4) is hinged to the control cabinet body (1) through a long-strip-shaped hinge (3), an air inlet (5) is formed in the left side wall of the control cabinet body (1), an air outlet (6) and an air return opening (7) are sequentially formed in the right side wall of the control cabinet body (1) from top to bottom, a first fan (8) and a second fan (9) which are respectively connected with the air inlet (5) and the air outlet (6) are arranged on the inner wall of the control cabinet body (1), a dust filtering assembly (10) is arranged at the top of the control cabinet body (1), the dust filtering assembly (10) is composed of a plate frame filter (1001), a film filter element filter (1002) and an activated carbon filter (1003), and the plate frame filter (1001), the film filter element filter (1002) and the activated carbon filter (1003) are sequentially connected in series through an exhaust, the air inlet end of the plate frame filter (1001) is provided with a third fan (11), the air outlet end of the activated carbon filter (1003) is connected with an air inlet (5) through an air supply pipe (12), the right side wall of the control cabinet body (1) is provided with an air-conditioning refrigeration assembly (14), the air-conditioning refrigeration assembly (14) comprises a cabinet body (1401), an access door (1402), an air-conditioning compressor (1403), a condenser (1404), a fourth fan (1405), an evaporator (1406) and a fifth fan (1407), the access door (1402) is hinged on the cabinet body (1401), the air-conditioning compressor (1403), the condenser (1404) and the evaporator (1406) are respectively installed inside the cabinet body (1401) through mounting plates, the cabinet body (1401) is provided with a cold air outlet communicated with an air return inlet (7), and the evaporator (1406) and the condenser (1404) are sequentially arranged on one side close to the cold air outlet, the fourth fan (1405) is arranged on one side, far away from the evaporator (1406), of the condenser (1404), the air inlet end of the fourth fan (1405) is connected with the air supply pipe (12) through the branch pipe (13), the fifth fan (1407) is arranged on one side, far away from the cold air outlet, of the evaporator (1406), the air conditioning compressor (1403) is connected with the condenser (1404) and the evaporator (1406) through the refrigeration pipeline respectively, the pipeline is connected between the condenser (1404) and the evaporator (1406), and reinforcing corner plates (16) are fixedly arranged at the corners of the inner wall of the control cabinet body (1) through screws (15).

2. The control cabinet with the explosion-proof function according to claim 1, characterized in that: the top and the bottom of the control cabinet body (1) are respectively provided with a wire inlet hole (17) and a wire outlet hole (18).

3. The control cabinet with the explosion-proof function according to claim 2, characterized in that: and dustproof wire passing plugs are arranged in the wire inlet hole (17) and the wire outlet hole (18).

4. The control cabinet with the explosion-proof function according to claim 1, characterized in that: the pressure gauge for detecting internal pressure is embedded above the side wall of the control cabinet body (1) corresponding to the first air outlet (6), and a buzzer is arranged on one side of the pressure gauge.

5. The control cabinet with the explosion-proof function according to claim 1, characterized in that: be equipped with temperature detect probe (19) and controller (20) on the inner wall of switch board body (1) respectively, controller (20) respectively with first fan (8), second fan (9), third fan (11), air condition compressor (1403), fourth fan (1405), evaporimeter (1406), fifth fan (1407) and temperature detect probe (19) electric connection.