CN115051247A - Air-assisted heat dissipation and dehumidification secondary equipment box, heat dissipation method and dehumidification method - Google Patents
Air-assisted heat dissipation and dehumidification secondary equipment box, heat dissipation method and dehumidification method Download PDFInfo
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- CN115051247A CN115051247A CN202210599589.6A CN202210599589A CN115051247A CN 115051247 A CN115051247 A CN 115051247A CN 202210599589 A CN202210599589 A CN 202210599589A CN 115051247 A CN115051247 A CN 115051247A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M29/00—Scaring or repelling devices, e.g. bird-scaring apparatus
- A01M29/30—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water
- A01M29/34—Scaring or repelling devices, e.g. bird-scaring apparatus preventing or obstructing access or passage, e.g. by means of barriers, spikes, cords, obstacles or sprinkled water specially adapted for insects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention provides a secondary equipment box with air supply, heat dissipation and dehumidification functions, a heat dissipation method and a dehumidification method, and belongs to the technical field of electrical box devices. The adopted scheme is as follows: including the casing, the inside of casing is provided with electric cabinet, dehumidification case and baffle, and electric cabinet and dehumidification case are located the both sides of baffle respectively, and the below of dehumidification case is provided with the negative pressure storehouse, has the clearance between the inner wall of casing and the outer wall of electric cabinet, dehumidification case, installs the scavenger fan in the clearance, and the below of scavenger fan is provided with the scavenge port, and the scavenge port is located the lateral wall of electric cabinet, and the scavenger fan can make the air current in the clearance flow along the direction of height of electric cabinet. The device has strong applicability and high resource utilization rate, and can realize gas exchange between the inside of the electric cabinet and the outside by arranging the piston which moves intermittently to manufacture a negative pressure space and matching with the ventilator, thereby improving the heat dissipation efficiency of the device; the humidity in the electric cabinet can be reduced while ventilation is realized by the dehumidification box, and condensation in the electric cabinet is effectively prevented.
Description
Technical Field
The invention relates to the technical field of electrical box devices, in particular to a secondary equipment box with air supply, heat dissipation and dehumidification functions, a heat dissipation method and a dehumidification method.
Background
The secondary equipment box is a protection means of secondary equipment, generally called as an equipment box, a terminal box or a terminal box, and the outdoor secondary equipment box generally adopts a fully-closed structure in order to prevent rainwater, dust and reptiles from entering, so that a large amount of heat cannot be dissipated when the secondary equipment works, and the equipment is easily damaged particularly when heat dissipation is not timely in summer; and dispel the heat through setting up vent or thermovent, except that the radiating efficiency is low, the condensation problem in summer also is difficult to solve. In summer, rain is excessive, the air humidity is high, and due to the influence of secondary equipment, the temperature in the box is high, and condensation can occur at the door of the terminal box with low temperature; in addition, in summer, thunderstorm weather is more, moisture in the air is saturated, and the surface of the terminal box dissipates heat quickly, so that condensation can be formed in the terminal box; in winter, the temperature of the secondary equipment is high, the temperature of the surface of the terminal box is low, and condensation is easily generated in the terminal box.
At present, a common anti-condensation measure is to install a heating device, such as a heating plate, to ensure that equipment in a terminal box cannot reach dew point temperature, so as to eliminate condensation. However, since the terminal box is generally made of metal material, the heat transfer performance is good, and the heating plate is used in the box body, the temperature near the heating plate can be raised, but the water vapor amount in the closed terminal box is not changed, so that the condensation phenomenon can be generated in the terminal box when the external temperature is low, and the risk of generating condensation still exists.
Disclosure of Invention
In order to overcome the defects of low heat dissipation efficiency and difficult solution of the condensation problem, the invention provides a secondary equipment box for air-conveying heat dissipation and dehumidification, a heat dissipation method and a dehumidification method.
The technical scheme adopted by the invention for solving the technical problems is as follows: a secondary equipment box with air supply, heat dissipation and dehumidification functions comprises a shell, wherein an electric cabinet, a dehumidification box and a partition plate are arranged inside the shell, the electric cabinet and the dehumidification box are respectively positioned on two sides of the partition plate, a negative pressure bin is arranged below the dehumidification box, an air inlet hole and an air outlet hole are formed in the partition plate, the air inlet hole is respectively communicated with the negative pressure bin and the electric cabinet, and the air outlet hole is respectively communicated with the dehumidification box and the electric cabinet; gaps exist between the inner wall of the shell and the outer walls of the electric control box and the dehumidification box, a ventilation fan is installed in the gaps, a ventilation opening is formed in the lower portion of the ventilation fan and located on the side wall of the electric control box, and air flow in the gaps can flow along the height direction of the electric control box through the ventilation fan. The air in the electric cabinet can enter the negative pressure bin through the air inlet, and the ventilator is opened at the same time, so that the pressure difference can be made, the external air can conveniently flow into the electric cabinet through the ventilator, and the intermittent ventilation of the electric cabinet is realized; the air entering the negative pressure bin can enter the dehumidifying box, and forms cold dry air after dehumidification. Then the gas is guided back into the electric control box through the gas outlet hole so as to realize the dehumidification of the gas in the electric control box; the negative pressure principle is utilized to realize the flowing and circulation of the gas in the electric cabinet, the circulation of the gas in the electric cabinet can be fully ensured, the heat exchange between the gas flows is realized, and the heat dissipation efficiency of the electric cabinet is ensured; the arrangement of the dehumidification box can realize the circulating dehumidification of air flow, effectively reduce the relative humidity in the electric cabinet and ensure the stable operation of the electric cabinet and internal components thereof; the shell capable of wrapping the electric cabinet is arranged, so that the electric cabinet is prevented from being directly contacted with the external environment, the heat preservation effect in winter is good, and condensation on the inner wall of the electric cabinet can be effectively prevented; there is the clearance between casing and the electric cabinet, makes the air current flow in the clearance, erodees the outer wall of electric cabinet, reaches the effect of removing dust and shielding reptile through the air current.
Furthermore, the shell is also provided with air exchange windows, the number of the air exchange windows corresponds to the number of the air exchange ports, and a dust removal device is arranged between the air exchange windows and the air exchange ports. The directional flow of external air current of being convenient for, when realizing taking a breath between electric cabinet and the external environment, fully remove dust, do benefit to the life of each components and parts in the secondary equipment case.
Further, the negative pressure bin comprises a piston and a push rod, the piston is matched with the cross section of the inner cavity of the negative pressure bin in shape, the push rod can drive the piston to slide along the length direction of the negative pressure bin, a first one-way exhaust valve is installed in an air inlet, a second one-way exhaust valve is installed in an air outlet, the first one-way exhaust valve can enable air flow to enter the negative pressure bin from the electric cabinet, and the second one-way exhaust valve can enable air flow to enter the electric cabinet from the dehumidification box. The volume between the piston and the inner wall of the negative pressure cabin can be changed by arranging the piston which slides along the length direction of the negative pressure cabin, so that a negative pressure environment is created to suck the gas in the electric cabinet into the negative pressure cabin; the one-way exhaust valve I and the one-way exhaust valve II are arranged in the air inlet hole and the air outlet hole respectively, so that the gas can be ensured to flow directionally, and the reliability of the device is improved conveniently.
Furthermore, an evaporation chamber and a condensation chamber are arranged in the dehumidification box, an evaporator is arranged in the evaporation chamber and can adsorb vapor in airflow, the negative pressure bin is communicated with the evaporation chamber through an air inlet pipe, the evaporation chamber is further connected with a first branch pipe and a second branch pipe, a pipe opening of the air inlet pipe is arranged on one side of the evaporator, pipe openings of the first branch pipe and the second branch pipe are arranged on the other side of the evaporator, the first branch pipe is communicated with the condensation chamber, the second branch pipe is connected with a gas spraying head, and the gas spraying head is located at the top end of the electric cabinet. Partial air flow can be introduced from the outside to realize the circulation of the air in the electric cabinet while dehumidifying; meanwhile, the gas entering the dehumidification box can be sequentially dried and cooled, and finally, one part of the gas is formed into cold dry air to be guided back into the electric control box, and the other part of the gas is pressurized by the air nozzle through the hot dry air naturally cooled by the branch pipe II and then is sprayed out.
Furthermore, a condenser and a fan are installed in the condensation chamber, the condenser is arranged between the pipe opening of the first branch pipe and the fan, the fan is arranged close to the partition plate, an air outlet of the fan is connected with one end of the air outlet pipe, and the other end of the air outlet pipe is connected with an air outlet hole in the partition plate. The hot dry air is cooled through the condenser, and the cold dry air is guided back to the electric control box by the fan to realize the dehumidification of the gas in the electric control box, so that the humidity of the gas in the electric control box is convenient to reduce, and the condensation generated in the electric control box is prevented.
Furthermore, the negative pressure bin is also connected with an air return pipe, the air inlet pipe and the air return pipe are both provided with control valves, one end of the air return pipe is communicated with the negative pressure bin, and the other end of the air return pipe is connected with an air nozzle. When the air return pipe is opened, gas in the negative pressure bin can be directly sprayed out after being pressurized by the air return pipe through the air spray head, the sprayed gas can flow in a gap between the shell and the electric cabinet, and then the discharged gas is utilized to blow away dust, small impurities such as crawlers and the like, so that the dustproof and crawler-preventing effects are achieved.
Furthermore, a support frame is arranged below the shell, two top plates are arranged above the shell, the two top plates are symmetrical about the center line of the shell, the top plates are arranged in a downward inclined mode, and the outer edges of the top plates extend to the outer side of the shell; be provided with the guiding gutter on the roof, the below of guiding gutter is provided with the collecting box, and the collecting box is installed on the casing, has laid the cotton that absorbs water in the collecting box. The distance between the electric control box and the shell can be increased by arranging the top plate, and the electric control box and the shell are prevented from exchanging heat more frequently; the outer edge of the top plate extends to the outer side of the shell, rainwater can be prevented from entering by matching with the ventilation window, the electric cabinet can be suspended by arranging the support frame, the electric cabinet is prevented from being in direct contact with the ground, and moisture can be effectively prevented from entering; utilize the air current of jet-propelled head spun to blow the condensation on the roof when the lower terminal surface of roof forms the condensation, make the condensation flow to the collecting box along the guiding gutter under the action of gravity in to by the cotton absorption that absorbs water wherein, thereby avoid the condensation on the roof to drip, can effectively strengthen the reliability of device.
Furthermore, the dust removal device comprises a first dust collection sticky plate, a second dust collection sticky plate and a third dust collection sticky plate, the first dust collection sticky plate is obliquely arranged between the inner wall of the shell and the outer wall of the electric cabinet, the second dust collection sticky plate is arranged on the ventilation window, the third dust collection sticky plate is arranged on the ventilation port, and the airflow can sequentially pass through the second dust collection sticky plate, the first dust collection sticky plate and the third dust collection sticky plate through the ventilation window and then enters the ventilation port. The dust collecting sticky plate is convenient for collecting small impurities such as dust and crawlers in the exchange of external air flow on the dust collecting sticky plate, and the dust or the crawlers can be fully prevented from entering the electric cabinet due to the arrangement of the structure of the dust collecting device.
A heat dissipation method of a secondary equipment box with air supply heat dissipation and dehumidification includes the following steps:
s1: starting a push rod in the negative pressure bin to drive the piston to move along the length direction of the negative pressure bin, so that the piston and the inner wall of the negative pressure bin are in a negative pressure state;
s2: meanwhile, the ventilation fan is started, and outside air flows into the electric cabinet to be ventilated and radiated;
s3: the push rod is pushed to drive the piston to move reversely, the volume between the piston and the inner wall of the negative pressure bin is reduced, the air inlet pipe is closed through the control valve, and the air return pipe is opened;
s4: the air in the negative pressure storehouse is pressed into the air return pipe, the air current in the air return pipe is sprayed out by the air nozzle at last, and the outer surface of the electric cabinet can be washed away when the sprayed air current passes through the gap between the shell and the electric cabinet, so that dust, fine reptiles and the like can be blown down onto the dust collecting sticky plate while heat dissipation is carried out.
A dehumidification method of a secondary equipment box with air-conveying heat dissipation and dehumidification comprises the following steps:
s1: starting a push rod in the negative pressure bin to drive the piston to move along the length direction of the negative pressure bin, so that the piston and the inner wall of the negative pressure bin are in a negative pressure state;
s2: outside air flows into the electric cabinet for ventilation;
s3: the push rod is pushed to drive the piston to move reversely, the volume between the piston and the inner wall of the negative pressure bin is reduced, the air return pipe is closed through the control valve, and the air inlet pipe is opened;
s4: the gas in the negative pressure bin is pressed into the gas inlet pipe and enters the evaporation chamber through the gas inlet pipe, and the water vapor in the gas is adsorbed on the aluminum sheet by the evaporator to form dry gas with higher temperature;
s5: and the dry gas with higher temperature enters the condensing chamber through the first branch pipe, is cooled by the condenser, and is blown out from the air outlet of the fan and guided back to the electric cabinet through the air outlet. The negative pressure space is manufactured, and the air exchange between the inside of the electric cabinet and the outside can be realized by matching with the ventilation fan, so that the heat dissipation efficiency of the device is improved; the humidity in the electric cabinet is reduced while ventilation is performed, and condensation in the electric cabinet is effectively prevented.
According to the technical scheme, the invention has the following advantages:
the scheme provides a secondary equipment box for air-assisted heat dissipation and dehumidification, a heat dissipation method and a dehumidification method, the device is high in applicability and high in resource utilization rate, a negative pressure space is manufactured by arranging a piston which moves intermittently, gas exchange between the inside of an electric cabinet and the outside can be realized by matching with a ventilation fan, and the heat dissipation efficiency of the device is improved; the dehumidification box is arranged, so that the humidity in the electric cabinet can be reduced while air exchange is carried out, and condensation in the electric cabinet is effectively prevented; through setting up electric cabinet and dehumidification case in the casing, can avoid electric cabinet and external environment direct contact, the clearance that exists between casing and the electric cabinet makes the air current can erode the outer wall of electric cabinet, improves the radiating efficiency, can reach dustproof, the effect of protection against insects when preventing to form the condensation.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural diagram of a negative pressure chamber according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a dehumidifying tank according to an embodiment of the present invention.
In the figure, 1, an electric cabinet, 2, a partition board, 3, an air inlet hole, 4, an air outlet hole, 5, a dehumidification box, 6, a negative pressure bin, 7, a piston, 8, a push rod, 9, a shell, 10, a ventilation port, 11, a ventilation fan, 12, a ventilation window, 13, a dust removal device, 14, a first dust collection sticky plate, 15, a second dust collection sticky plate, 16, a third dust collection sticky plate, 17, an air inlet pipe, 18, an evaporation chamber, 19, an evaporator, 20, a first branch pipe, 21, a condensation chamber, 22, a condenser, 23, a fan, 24, an air outlet pipe, 25, a second branch pipe, 26, an air injection head, 27, an air return pipe, 28, a top plate, 29, a support frame, 30, a diversion trench, 31 and a collection box.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is obvious that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.
As shown in fig. 1 to 4, a secondary equipment box with air supply, heat dissipation and dehumidification functions comprises a shell 9, wherein an electric cabinet 1, a dehumidification box 5 and a partition plate 2 are arranged inside the shell 9, the electric cabinet 1 and the dehumidification box 5 are respectively positioned on two sides of the partition plate 2, a negative pressure bin 6 is arranged below the dehumidification box 5, an air inlet 3 and an air outlet 4 are arranged on the partition plate 2, the air inlet 3 is respectively communicated with the negative pressure bin 6 and the electric cabinet 1, and the air outlet 4 is respectively communicated with the dehumidification box 5 and the electric cabinet 1; there is the clearance between the outer wall of the inner wall of casing 9 and electric cabinet 1, dehumidification case 5, installs scavenger fan 11 in the clearance, and the below of scavenger fan 11 is provided with scavenge port 10, and scavenge port 10 is located the lateral wall of electric cabinet 1, and scavenger fan 11 can make the air current in the clearance flow along the direction of height of electric cabinet 1. A sealing rubber strip can be additionally arranged on the cable trench to prevent moisture from entering the cable trench; the number of the ventilation ports 10 can be set according to the specific working environment of the outdoor equipment box, and a certain number of ventilation fans 11 are arranged, so that the pressure difference between the outside and the internal environment of the shell 9 is ensured, gas exchange is facilitated, and the heat dissipation efficiency is improved; the negative pressure principle is utilized to realize the flowing and circulation of the gas in the electric cabinet 1, the circulation of the gas in the electric cabinet 1 can be fully ensured, the heat exchange between the gas flows is realized, and the heat dissipation efficiency of the electric cabinet is ensured; the dehumidification box 5 is arranged to realize the circulating dehumidification of air flow, effectively reduce the relative humidity in the electric cabinet 1 and ensure the stable operation of the electric cabinet 1 and the internal components thereof; the shell capable of wrapping the electric cabinet 1 is arranged, so that the electric cabinet 1 is prevented from being directly contacted with the external environment, the heat preservation effect in winter is good, and condensation can be effectively prevented from being generated on the inner wall of the electric cabinet 1; there is the clearance between casing 9 and the electric cabinet 1, makes the air current flow in the clearance, erodees the outer wall of electric cabinet 1, reaches the effect of removing dust and shielding the reptile through the air current.
Wherein, two top plates 28 are arranged above the shell 9, the two top plates 28 are symmetrical about the center line of the shell 9, the top plates 28 are arranged in a downward inclination manner, and the outer edges of the top plates 28 extend to the outer side of the shell 9; a support frame 29 is provided below the housing 9. The arrangement of the top plate 28 can increase the distance between the electric cabinet 1 and the shell 9, and prevent the frequent heat exchange between the electric cabinet 1 and the shell 9; the outer edge of the top plate 28 extends to the outer side of the shell 9, and the ventilation window 12 is matched to prevent rainwater from entering; set up support frame 29 and can make electric cabinet 1 suspension, avoid electric cabinet 1 and ground direct contact, can effectively prevent the moisture entering.
Specifically, as shown in fig. 3, a diversion trench 30 is arranged on the top plate 28, a collection box 31 is arranged below the diversion trench 30, the collection box 31 is mounted on the housing 9, and absorbent cotton is laid in the collection box 31. Can choose for use the cotton that absorbs water that contains super absorbent resin, utilize the air current of air jet 24 spun to blow the condensation on the roof 28 when the condensation is formed to the lower terminal surface of roof 28, make the condensation flow to the collecting box 31 along guiding gutter 30 under the action of gravity in to absorb by the cotton that absorbs water wherein, thereby avoid the condensation on the roof 28 to drip, can effectively strengthen the reliability of device.
In this embodiment, the specific structure of the dehumidifying box 5 is: be provided with evaporating chamber 18 and condensing chamber 21 in the dehumidification case 5, be provided with evaporimeter 19 in the evaporating chamber 18, evaporimeter 19 can adsorb the vapor in the air current, negative pressure storehouse 6 passes through intake pipe 17 and 18 intercommunications in evaporating chamber, evaporating chamber 18 still is connected with branch pipe one 20 and branch pipe two 25, the mouth of pipe of intake pipe 17 sets up in one side of evaporimeter 19, the mouth of pipe of branch pipe one 20 and branch pipe two 25 all sets up in the opposite side of evaporimeter 19, branch pipe one 20 is linked together with condensing chamber 21, branch pipe two 25 links to each other with jet-propelled head 26, jet-propelled head 26 is located the top of electric cabinet 1. As shown in fig. 1, 3 groups of gas nozzles 26 can be provided, and the direction of each group of gas nozzles 26 is vertically upward and perpendicular to the two top plates 28, respectively, the gas flow ejected from the gas nozzles 26 can also heat the air in the gap, and part of the gas flow can be introduced from the outside to realize the circulation of the gas in the electric cabinet 1 while dehumidifying; meanwhile, the gas entering the dehumidifying box 5 can be dried and cooled in sequence, and finally a part of the gas is formed into cold dry air and is guided back into the electric control box 1, and the other part of the hot dry air naturally cooled through the second branch pipe 25 is pressurized by the air nozzle 26 and then is sprayed out.
As shown in fig. 3, a condenser 22 and a blower 23 are installed in the condensing chamber 21, the condenser 22 is disposed between the pipe orifice of the first branch pipe 20 and the blower 23, the blower 23 is disposed near the partition plate 2, an air outlet of the blower 23 is connected with one end of an air outlet pipe 24, and the other end of the air outlet pipe 24 is connected with an air outlet hole 4 on the partition plate 2. The hot dry air is cooled by the condenser 22, and the cold dry air is guided back to the electric control box 1 by the fan 23 to realize the dehumidification of the gas in the electric control box 1, so that the humidity of the gas in the electric control box 1 is convenient to reduce, and the condensation generated in the electric control box 1 is prevented.
On the other hand, the negative pressure cabin 6 is further connected with a gas return pipe 27, the gas inlet pipe 17 and the gas return pipe 27 are both provided with control valves, one end of the gas return pipe 27 is communicated with the negative pressure cabin 6, and the other end of the gas return pipe 27 is connected with a gas nozzle 26. Can set up two branches on back flow 27 in this embodiment, and install the control valve respectively on two branches and open and close with control it, one of them branch road that sets up back flow 27 is by passing through in condensing chamber 21 and set up the cotton or set up water-collecting device in this branch road inside, carry out cooling to exhaust hot-air when dispelling the heat, can directly be by back-air duct 27 blowout after jet-propelled head 26 pressurization with the gas in negative pressure storehouse 6 when opening back-air duct 27, gas after the blowout can flow in the clearance between casing 9 and electric cabinet 1, and then utilize the combustion gas to blow down the dust, the equidimension little debris of reptile, dustproof and the effect of preventing the reptile has been played.
In this embodiment, the negative pressure chamber 6 has the following specific structure: the negative pressure bin 6 comprises a piston 7 and a push rod 8, the piston 7 is matched with the cross section of the inner cavity of the negative pressure bin 6 in shape, the push rod 8 can drive the piston 7 to slide along the length direction of the negative pressure bin 6, a one-way exhaust valve I5 is installed in the air inlet hole 3, a one-way exhaust valve II 6 is installed in the air outlet hole 4, the one-way exhaust valve I5 can enable air flow to enter the negative pressure bin 6 from the electric cabinet 1, and the one-way exhaust valve II 6 can enable air flow to enter the electric cabinet 1 from the dehumidifying cabinet 5. The volume between the piston 7 and the inner wall of the negative pressure cabin 6 can be changed by arranging the piston 7 which slides along the length direction of the negative pressure cabin 6, so that a negative pressure environment is created, and the gas in the electric cabinet 1 is sucked into the negative pressure cabin 6; the one-way exhaust valve I5 and the one-way exhaust valve II 6 are arranged in the air inlet hole 3 and the air outlet hole 4 respectively, so that the gas can be ensured to flow directionally, and the reliability of the device can be improved conveniently.
As shown in fig. 1 and 3, the housing 9 is further provided with ventilation windows 12, the number of the ventilation windows 12 corresponds to the number of the ventilation ports 10, and a dust removing device 13 is provided between the ventilation windows 12 and the ventilation ports 10. Can set up the scavenge window 12 and be located same height with the scavenge port 10, also can be with setting up both crisscross, can set up scavenge window 12 and can open and close in coordination with scavenger fan 11 to be applicable to the great area of raise dust, be convenient for make the external air current carry out directional flow, when realizing taking a breath between electric cabinet 1 and the external environment, fully remove dust, do benefit to the life of each components and parts in the secondary equipment box.
In this embodiment, the specific structure of the dust removing device 15 is: the dust removal device 15 comprises a first dust collection sticky plate 14, a second dust collection sticky plate 15 and a third dust collection sticky plate 16, the first dust collection sticky plate 14 is obliquely arranged between the inner wall of the shell 9 and the outer wall of the electric cabinet 1, the second dust collection sticky plate 15 is arranged on the ventilation window 12, the third dust collection sticky plate 16 is arranged on the ventilation opening 10, and air flow can enter the ventilation opening 10 after sequentially passing through the second dust collection sticky plate 15, the first dust collection sticky plate 14 and the third dust collection sticky plate 16 through the ventilation window 12. In this embodiment, the ventilation window 12 and the ventilation opening 10 are located at the same height, and an integrally disposed dust removing device 15 can be adopted, and is configured in an N shape, and two ends of the first dust collecting sticky board 14 are respectively connected with the second dust collecting sticky board 15 and the third dust collecting sticky board 16, so as to facilitate assembly, disassembly and replacement; because the first dust collecting sticky plate 14, the second dust collecting sticky plate 15 and the third dust collecting sticky plate 16 are all of a net structure, when the ventilation fan 11 works and the air jet 26 jets out air flow, small impurities such as dust and crawlers can be conveniently collected on the dust removal device 15, and the dust removal device 15 can fully prevent the dust or crawlers from entering the electric cabinet 1 due to the structural arrangement.
The specific structure of the secondary equipment box based on air-assisted heat dissipation and dehumidification comprises the following steps:
s1: starting a push rod 8 in the negative pressure bin 6 to drive a piston 7 to move along the length direction of the negative pressure bin 6, so that the piston 7 and the inner wall of the negative pressure bin 6 are in a negative pressure state;
s2: meanwhile, the ventilation fan 11 is started, and outside air flows into the electric control box 1 to perform ventilation and heat dissipation;
s3: the push rod 8 is pushed to drive the piston 7 to move reversely, the volume between the piston 7 and the inner wall of the negative pressure bin 6 is reduced, the air inlet pipe 17 is closed through the control valve, and the air return pipe 27 is opened;
s4: the air in the negative pressure bin 6 is pressed into the air return pipe 27, the air flow in the air return pipe 27 is finally sprayed out by the air spraying head 26, and when the sprayed air flow passes through a gap between the shell 9 and the electric cabinet 1, the outer surface of the electric cabinet 1 can be washed away, so that dust, fine reptiles and the like can be blown down onto the first dust collection sticky plate 14 while heat dissipation is carried out.
The dehumidification method of the secondary equipment box with the air supply, heat dissipation and dehumidification functions comprises the following steps:
s1: starting a push rod 8 in the negative pressure bin 6 to drive a piston 7 to move along the length direction of the negative pressure bin 6, so that the piston 7 and the inner wall of the negative pressure bin 6 are in a negative pressure state;
s2: outside air flows into the electric control box 1 for ventilation;
s3: the push rod 8 is pushed to drive the piston 7 to move reversely, the volume between the piston 7 and the inner wall of the negative pressure bin 6 is reduced, the air return pipe 27 is closed through the control valve, and the air inlet pipe 17 is opened;
s4: the gas in the negative pressure bin 6 is pressed into a gas inlet pipe 17 and enters an evaporation chamber 18 from the gas inlet pipe 17, and water vapor in the gas is adsorbed on an aluminum sheet by an evaporator 19 to form dry gas with higher temperature;
s5: the dry gas with higher temperature enters the condensing chamber 21 through the first branch pipe 20, is cooled by the condenser 22, and is blown out from the air outlet of the fan 23 and guided back to the electric cabinet 1 through the air outlet 4. By manufacturing the negative pressure space and matching with the ventilation fan 11, gas exchange between the inside of the electric cabinet 1 and the outside can be realized, and the heat dissipation efficiency of the device is improved; reduce the humidity in the electric cabinet 1 when taking a breath, effectively prevent to produce the condensation in the electric cabinet 1.
The working principle of the secondary equipment box with air supply, heat dissipation and dehumidification is as follows:
when the electric cabinet 1 in summer needs to dissipate heat, the push rod 8 in the negative pressure bin 6 drives the piston 7 to move along the length direction of the negative pressure bin 6, and the volume between the piston 7 and the inner wall of the negative pressure bin 6 is increased to be in a negative pressure state; at the moment, the temperature and the pressure of the gas in the electric cabinet 1 are higher than the air pressure in the negative pressure cabin 6, and the hot air in the electric cabinet 1 can enter the negative pressure cabin 6 through the air inlet 3; the ventilating fan 11 is started while the negative pressure bin 6 sucks the gas in the electric cabinet 1, and the ventilating fan 11 can increase the air flow rate, so that the gas pressure in the electric cabinet 1 and the gap between the shell 9 and the electric cabinet 1 are small, and the external air can flow into the ventilating fan to ventilate and dissipate heat conveniently; when the piston 7 moves to be attached to the inner wall of the negative pressure bin 6 on the opposite side of the initial state, the push rod 8 is pushed to drive the piston 7 to move reversely, the volume between the piston 7 and the inner wall of the negative pressure bin 6 is reduced, the air inlet pipe 17 is closed under the action of the control valve, and the air return pipe 27 is opened; because the one-way exhaust valve I is arranged in the air inlet hole 3, the air in the negative pressure bin 6 can be pressed into the air return pipe 27, and the air flow in the air return pipe 27 is finally ejected out by the air nozzle 26; because there is the clearance between casing 9 and the electric cabinet 1, therefore the air current can intermittent type nature wash away the surface of electric cabinet 1 through the process, can also blow off dust and tiny reptile etc. to collection dirt sticky plate 14 when doing benefit to the device heat dissipation on, further realize protection against insects, dirt-proof purpose.
When the electric cabinet 1 in summer needs dehumidification, the air return pipe 27 is closed, the air inlet pipe 17 is opened, the air in the negative pressure bin 6 is pressed into the air inlet pipe 17 and enters the evaporation chamber 18 from the air inlet pipe 17, when the air passes through the evaporator 19, the evaporator 19 adsorbs water vapor in the air onto an aluminum sheet, the air at the moment is dry air with higher temperature, the branch pipe two 25 is closed, the air enters the condensation chamber 21 through the branch pipe one 20 and is cooled by the condenser 22 to be dry air with lower temperature, and formed cold dry air is blown out from an air outlet of the fan 23 and is guided back to the electric cabinet 1 through the air outlet 4; when dehumidification is carried out, the ventilation fan 11 is not opened, the inflow of external gas is realized only by the pressure difference between the electric cabinet 1 and the outside, and the cyclic dehumidification of the gas in the electric cabinet 1 is realized; and because the clearance between casing 9 and the electric cabinet 1 can make the gaseous inflow in the external environment, can flow through the surface of electric cabinet 1 through the clearance, realize taking a breath of clearance position.
When the electric cabinet 1 in winter needs dehumidification, the air return pipe 27 is closed, the air inlet pipe 17 is opened, the air in the negative pressure bin 6 is pressed into the air inlet pipe 17 and enters the evaporation chamber 18 from the air inlet pipe 17, when the air passes through the evaporator 19, the evaporator 19 adsorbs water vapor in the air onto an aluminum sheet, the air at the moment is dry air with higher temperature, the branch pipe two 25 is opened, the air is divided into two parts, one part enters the condensation chamber 21 from the branch pipe one 20 and is cooled into dry air with lower temperature, and the dry air is guided back into the electric cabinet 1 again by the fan 23; the other part is naturally cooled through a branch pipe II 25 and then is ejected out of the air nozzle 26; because the electric cabinet 1 is covered in the shell and is not directly contacted with the external environment, condensation is more easily formed on the inner wall of the shell 1, particularly the lower end face of the top plate 28 in winter, because the air nozzle 26 is positioned at the top of the electric cabinet 1, if condensation is formed on the lower end face of the top plate 28 at the moment, hot dry air sprayed by the air nozzle 26 can blow the condensation on the top plate 28 to move, and the top plate 28 is obliquely arranged, the condensation can flow into the collecting box 31 along the diversion trench 30 under the action of gravity and is absorbed by the water-absorbing cotton in the collection box, so that the condensation on the top plate 28 is prevented from dripping; meanwhile, as the sprayed air flow is hot dry air, the top plate 28, the shell 9 and the electric cabinet 1 can be flushed in the process that the air flow flows along the gap between the shell 9 and the electric cabinet 1, and the top plate 28 and the shell 9 are heated, so that condensation is prevented from being generated on the inner walls of the top plate 28 and the shell 9; the hot dry air blown out by the air nozzle 26 can form a dry air film with a high temperature between the gaps, and exchange heat with the air flowing in from the outside to prevent condensation from forming at the ventilation opening 10.
The detection devices for the internal temperature, humidity and pressure of the electric cabinet 1 and the shell 9 and the driving and controlling systems of the push rod 8 and the ventilation fan 11 can be realized by adopting the prior art, and are not described again.
The terms "upper", "lower", "outside", "inside", and the like in the description and claims of the present invention and the above-described drawings (if any) are used for distinguishing relative positions without necessarily being construed qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The secondary equipment box is characterized by comprising a shell (9), wherein an electric cabinet (1), a dehumidifying box (5) and a partition plate (2) are arranged inside the shell (9), the electric cabinet (1) and the dehumidifying box (5) are respectively positioned on two sides of the partition plate (2), a negative pressure bin (6) is arranged below the dehumidifying box (5), an air inlet hole (3) and an air outlet hole (4) are formed in the partition plate (2), the air inlet hole (3) is respectively communicated with the negative pressure bin (6) and the electric cabinet (1), and the air outlet hole (4) is respectively communicated with the dehumidifying box (5) and the electric cabinet (1); a gap exists between the inner wall of the shell (9) and the outer walls of the electric cabinet (1) and the dehumidification box (5), a ventilation fan (11) is installed in the gap, a ventilation opening (10) is arranged below the ventilation fan (11), the ventilation opening (10) is located on the side wall of the electric cabinet (1), and the ventilation fan (11) can enable airflow in the gap to flow along the height direction of the electric cabinet (1).
2. The secondary equipment box with wind sending, heat dissipating and dehumidifying functions as claimed in claim 1, wherein the casing (9) is further provided with ventilation windows (12), the number of the ventilation windows (12) corresponds to the number of the ventilation ports (10), and a dust removing device (13) is arranged between the ventilation windows (12) and the ventilation ports (10).
3. The secondary equipment box of claim 1, wherein the negative pressure bin (6) comprises a piston (7) and a push rod (8), the piston (7) is matched with the cross section of the inner cavity of the negative pressure bin (6), the push rod (8) can drive the piston (7) to slide along the length direction of the negative pressure bin (6), a one-way exhaust valve I is installed in the air inlet hole (3), a one-way exhaust valve II is installed in the air outlet hole (4), the one-way exhaust valve I can enable air flow to enter the negative pressure bin (6) from the electric cabinet (1), and the one-way exhaust valve II can enable air flow to enter the electric cabinet (1) from the dehumidifying cabinet (5).
4. The secondary equipment box with the functions of air supply, heat dissipation and dehumidification according to claim 1, characterized in that an evaporation chamber (18) and a condensation chamber (21) are arranged in the dehumidification box (5), an evaporator (19) is arranged in the evaporation chamber (18), the evaporator (19) can adsorb water vapor in air flow, the negative pressure bin (6) is communicated with the evaporation chamber (18) through an air inlet pipe (17), the evaporation chamber (18) is further connected with a first branch pipe (20) and a second branch pipe (25), a pipe opening of the air inlet pipe (17) is formed in one side of the evaporator (19), pipe openings of the first branch pipe (20) and the second branch pipe (25) are formed in the other side of the evaporator (19), the first branch pipe (20) is communicated with the condensation chamber (21), the second branch pipe (25) is connected with an air injection head (26), and the air injection head (26) is located at the top end of the electric cabinet (1).
5. The secondary equipment box with the functions of air supply, heat dissipation and dehumidification according to claim 4, wherein a condenser (22) and a fan (23) are installed in the condensation chamber (21), the condenser (22) is arranged between a pipe opening of the first branch pipe (20) and the fan (23), the fan (23) is arranged close to the partition plate (2), an air outlet of the fan (23) is connected with one end of the air outlet pipe (24), and the other end of the air outlet pipe (24) is connected with the air outlet hole (4) in the partition plate (2).
6. The secondary equipment box of claim 4, characterized in that the negative pressure chamber (6) is further connected with an air return pipe (27), the air inlet pipe (17) and the air return pipe (27) are both provided with control valves, one end of the air return pipe (27) is communicated with the negative pressure chamber (6), and the other end of the air return pipe (27) is connected with an air nozzle (26).
7. The secondary equipment box with air supply, heat dissipation and dehumidification functions as claimed in claim 1, wherein a support frame (29) is arranged below the shell (9), two top plates (28) are arranged above the shell (9), the two top plates (28) are symmetrical with respect to a central line of the shell (9), the top plates (28) are arranged in a downward inclined mode, and outer edges of the top plates (28) extend to the outer side of the shell (9); a guide groove (30) is arranged on the top plate (28), a collecting box (31) is arranged below the guide groove (30), the collecting box (31) is installed on the shell (9), and absorbent cotton is laid in the collecting box (31).
8. The secondary equipment box of claim 2, wherein the dust removing device (13) comprises a first dust collecting sticky plate (14), a second dust collecting sticky plate (15) and a third dust collecting sticky plate (16), the first dust collecting sticky plate (14) is obliquely arranged between the inner wall of the shell (9) and the outer wall of the electric control box (1), the second dust collecting sticky plate (15) is arranged on the ventilation window (12), the third dust collecting sticky plate (16) is arranged on the ventilation opening (10), and the air flow can enter the ventilation opening (10) after passing through the second dust collecting sticky plate (15), the first dust collecting sticky plate (14) and the third dust collecting sticky plate (16) in sequence from the ventilation window (12).
9. A heat dissipation method of a secondary equipment box using the air-blowing heat dissipation dehumidification according to any one of claims 1 to 8, characterized by comprising the steps of:
s1: starting a push rod (8) in the negative pressure bin (6) to drive a piston (7) to move along the length direction of the negative pressure bin (6), so that a negative pressure state is formed between the piston (7) and the inner wall of the negative pressure bin (6);
s2: meanwhile, the ventilation fan (11) is started, and outside air flows into the electric cabinet (1) to be ventilated and radiated;
s3: the push rod (8) is pushed to drive the piston (7) to move reversely, the volume between the piston (7) and the inner wall of the negative pressure bin (6) is reduced, the air inlet pipe (17) is closed through the control valve, and the air return pipe (27) is opened;
s4: the air in the negative pressure bin (6) is pressed into the air return pipe (27), the air flow in the air return pipe (27) is ejected out by the air ejecting head (26) finally, and the ejected air flow can wash the outer surface of the electric cabinet (1) when passing through the gap between the shell (9) and the electric cabinet (1), so that dust, fine reptiles and the like can be blown down onto the first dust collecting sticky plate (14) while heat dissipation is carried out.
10. A dehumidification method of a secondary equipment box using the air-assisted heat dissipation dehumidification of any one of claims 1 to 8, comprising the steps of:
s1: starting a push rod (8) in the negative pressure bin (6) to drive a piston (7) to move along the length direction of the negative pressure bin (6), so that a negative pressure state is formed between the piston (7) and the inner wall of the negative pressure bin (6);
s2: outside air flows into the electric cabinet (1) for ventilation;
s3: the push rod (8) is pushed to drive the piston (7) to move reversely, the volume between the piston (7) and the inner wall of the negative pressure bin (6) is reduced, the air return pipe (27) is closed through the control valve, and the air inlet pipe (17) is opened;
s4: the gas in the negative pressure bin (6) is pressed into the gas inlet pipe (17) and enters the evaporation chamber (18) through the gas inlet pipe (17), and the water vapor in the gas is adsorbed on the aluminum sheet by the evaporator (19) to form dry gas with higher temperature;
s5: the dry gas with higher temperature enters the condensing chamber (21) through the branch pipe I (20), is cooled by the condenser (22), and is blown out from an air outlet of the fan (23) and is guided back to the electric cabinet (1) through the air outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210599589.6A CN115051247A (en) | 2022-05-30 | 2022-05-30 | Air-assisted heat dissipation and dehumidification secondary equipment box, heat dissipation method and dehumidification method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210599589.6A CN115051247A (en) | 2022-05-30 | 2022-05-30 | Air-assisted heat dissipation and dehumidification secondary equipment box, heat dissipation method and dehumidification method |
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| CN115051247A true CN115051247A (en) | 2022-09-13 |
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|---|---|---|---|
| CN202210599589.6A Pending CN115051247A (en) | 2022-05-30 | 2022-05-30 | Air-assisted heat dissipation and dehumidification secondary equipment box, heat dissipation method and dehumidification method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116914571A (en) * | 2023-05-31 | 2023-10-20 | 华能国际电力股份有限公司上海石洞口第二电厂 | Dustproof heat abstractor of electrical equipment |
| CN117119733A (en) * | 2023-10-18 | 2023-11-24 | 南通豪强电器设备有限公司 | Power transmission and transformation equipment running state monitoring device |
| CN117783490A (en) * | 2024-02-26 | 2024-03-29 | 河南鹏飞建设工程有限公司 | Soil moisture content acquisition monitoring device |
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2022
- 2022-05-30 CN CN202210599589.6A patent/CN115051247A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116914571A (en) * | 2023-05-31 | 2023-10-20 | 华能国际电力股份有限公司上海石洞口第二电厂 | Dustproof heat abstractor of electrical equipment |
| CN117119733A (en) * | 2023-10-18 | 2023-11-24 | 南通豪强电器设备有限公司 | Power transmission and transformation equipment running state monitoring device |
| CN117119733B (en) * | 2023-10-18 | 2023-12-29 | 南通豪强电器设备有限公司 | Power transmission and transformation equipment running state monitoring device |
| CN117783490A (en) * | 2024-02-26 | 2024-03-29 | 河南鹏飞建设工程有限公司 | Soil moisture content acquisition monitoring device |
| CN117783490B (en) * | 2024-02-26 | 2024-05-17 | 河南鹏飞建设工程有限公司 | Soil moisture content acquisition monitoring device |
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