CN108963786A - A kind of switchgear condensation-preventing device - Google Patents
A kind of switchgear condensation-preventing device Download PDFInfo
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- CN108963786A CN108963786A CN201811139770.9A CN201811139770A CN108963786A CN 108963786 A CN108963786 A CN 108963786A CN 201811139770 A CN201811139770 A CN 201811139770A CN 108963786 A CN108963786 A CN 108963786A
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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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/02—Polyamines
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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Abstract
The invention discloses a kind of switchgear condensation-preventing devices, including cabinet body, insulating layer is arranged in cabinet body outer surface, cabinet body inside top is taper, and a plurality of groove is opened up on cabinet body inner wall along the vertical direction, cabinet body lower part offers inclined drainage hole, chill item is provided in groove, semiconductor chilling plate is provided between chill item and groove, first temperature sensor is set on cabinet body inner wall, dew point hygrometer for detecting Inside Air Temperature is set in cabinet body, second temperature sensor is arranged in the intracorporal electrical equipment outer surface of cabinet, drier for electrical equipment to be dried is set in cabinet body.One aspect of the present invention is capable of providing chill item of the temperature lower than electrical equipment surface temperature in switchgear so that dew condensation phenomenon preferentially occurs on chill surface, greatly reduce the probability that condensation occurs in the cabinet that opens the light on electrical equipment, on the other hand electrical equipment can be dried using cabinet intracorporal drier, to further avoid that dew condensation phenomenon occurs on electrical equipment.
Description
Technical field
The present invention relates to the anti-condensation technical fields of switchgear, more particularly, to a kind of switchgear condensation-preventing device.
Background technique
Switchgear is very important electrical equipment in electric system, and switchgear is responsible in the power system to be closed and break
Open the dual function of power circuit, protection system safety.As electric power is towards the rapid development of high voltage, large-sized unit, large capacity,
Power grid is growing and the promotion and popularization of Unattended substation management mode and comprehensive automation, the safe operation of switchgear
It is more and more important, and requirement of the modern power systems to power quality is higher and higher, correspondingly to the reliability of switchgear
More stringent requirements are proposed.
Since narrow space, phase spacing are small in cabinet, and cabinet body seals, and the excessive equipment surface of air humidity agglomerates moisture,
Cause mould to breed to accelerate, metal erosion quickening causes contact surface to aoxidize, and contact resistance increases, component and connecting terminal in cabinet
It is easy dampness and short circuit or ground fault occurs, cause the insulation performance of equipment to reduce, threatened to the safety belt of switchgear, hold
Easily cause the generation of accident.
Therefore, it is necessary to research and develop a kind of switchgear condensation-preventing device just to seem especially urgent.
The solar energy for disclosing a kind of switchgear application No. is the Chinese invention patent application of CN104682222A is anti-condensation
Device, the solar energy condensation-preventing device of the switchgear include: solar panel (20), are arranged at the top of switchgear (10)；
Battery is connect with solar panel (20), and battery stores the electric energy of solar panel (20) conversion；Electric heater
(30), it is arranged on switchgear (10)；Inverter is electrically connected with battery and electric heater (30), and inverter is by battery
DC conversion at alternating current needed for electric heater (30).The technical solution of the invention efficiently solves in the prior art
The big problem of anti-condensation heating device electricity consumption.However, the invention carries out anti-condensation, this method pair using traditional heating method
The condensation of the big generation of cabinet internal-external temperature difference can not judge, lead to not eliminate condensation.Because of the constant situation of moisture content in cabinet
Under, humidity can reduce after generating condensation.And keep in-cabinet temperature excessively high for a long time, equipment accelerated ageing in cabinet can be made.
A kind of anti-condensation switch cabinet of disclosure of the invention that application publication number is CN 108039656 A, including cabinet body, cabinet body
On be provided with several ventilation openings, be provided with dehumidifying ventilation device in ventilation opening, dehumidifying ventilation device includes barrel-type casing, shell one
End is separated into several cavitys by partition, and several cavity both ends are provided with mesh inner equipped with heating wire and filled with silica dehydrator
Agent, housing sidewall sliding are provided with several sliding blocks, and sliding block is equipped with the cover board for closing cavity cover, is equipped with motor in shell,
Fan and several first belt pulleys are connected on motor output shaft, several first belt pulleys are logical with several second belt pulleys respectively
Belt transmission connection is crossed, is provided on shell and passes through deceleration with the one-to-one shaft of several cover boards, the second belt pulley and shaft
Mechanism driving, shaft are provided with the first inclined-plane close to one end of cover board, the second inclined-plane are provided on cover board, between sliding block and shell
It is provided with tension spring, is provided on cover board and conductive contact blade.This kind of anti-condensation switch cabinet can prevent condensation and from maintenance.However,
The switchgear is still carried out using traditional electric-heating-wire-heating method anti-condensation.
Summary of the invention
In view of this, in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of switchgear condensation-preventing device, one
Aspect be capable of providing temperature lower than electrical equipment surface temperature in switchgear chill item so that dew condensation phenomenon preferentially in chill
Surface occurs, and greatly reduces the probability that condensation occurs in the cabinet that opens the light on electrical equipment, on the other hand can be intracorporal using cabinet
Electrical equipment is dried in drier, to further avoid that dew condensation phenomenon occurs on electrical equipment.
In order to achieve the above objectives, the invention adopts the following technical scheme:
Insulating layer is arranged in a kind of switchgear condensation-preventing device, including cabinet body, the cabinet body outer surface, and the cabinet body inside top is
Taper, and a plurality of groove is opened up on the cabinet body inner wall along the vertical direction, two lower ends of the cabinet body lower part and the groove
Portion position corresponding section offers inclined drainage hole, and temperature is provided in the groove lower than the intracorporal electrical equipment of the cabinet
The chill item of surface temperature, two lower ends of the chill item are located at the upper end of drainage hole corresponding thereto, described cold
It is provided with the semiconductor chilling plate for cooling down to the chill item between iron bar and groove, is arranged first on the cabinet body inner wall
Temperature sensor, is arranged the dew point hygrometer for detecting Inside Air Temperature in the cabinet body, outside the intracorporal electrical equipment of cabinet
Second temperature sensor is arranged in surface, and the drier for electrical equipment to be dried, the cabinet are arranged in the cabinet body
Setting PLC controller in vivo, the PLC controller and first temperature sensor, dew point hygrometer, second temperature sensor, half
Conductor cooling piece is connected with drier signal.
Further, the drier includes that setting is equipped with inside the intracorporal air accumulator of the cabinet, the air accumulator
Dry compressed air, the cabinet body inner wall higher slice are horizontally disposed with multiple other ends closed at one end and pass through pipeline and the gas storage
The U-shaped pipe that the gas outlet electromagnetic valve of tank is connected, left side, the right side of institute's U-shaped pipe and the intracorporal electrical equipment of the cabinet
Side and trailing flank are facing, and row's air nozzle, the gas outlet electricity of the air accumulator are provided on the U-shaped pipe medial surface
Magnet valve door is connect with the PLC controller signal.
Further, dustcloth is provided in the drainage hole.
Further, the quantity of the U-shaped pipe is 1-8.
Further, heater is set in the cabinet body, and the heater and the PLC controller signal interconnect.
Waterproof layer is set outside the insulating layer.
The component and its content that the waterproof layer includes are as follows: polyaniline 15-20 parts by weight, polymethyl methacrylate 2-5
Parts by weight, chloroform 6-10 parts by weight, N,N-dimethylformamide 40-52 parts by weight, sodium metasilicate 15.2-18.5 parts by weight,
Lauryl sodium sulfate 2.5-3.6 parts by weight, nano silica 7-11 parts by weight, waterproofing agent 5.8-6.6 parts by weight, heat-resistant agent
3.5-4.3 parts by weight, corrosion-resistant agent 8.7-9.5 parts by weight, acetone 22-28 parts by weight, deionized water 46-55 parts by weight.
Further, the waterproofing agent is one or both of sodium methyl silicate or calcium stearate；
The waterproofing agent is the mixture of sodium methyl silicate and calcium stearate, weight ratio sodium methyl silicate: calcium stearate 7:3；
The corrosion-resistant agent is one of hexa, cinnamic acid, poly-aspartate or a variety of.
Further, the corrosion-resistant agent is the mixture of hexa, cinnamic acid and poly-aspartate, weight ratio
Hexa: cinnamic acid: poly-aspartate 2:3:5.
Further, the heat-resistant agent is one of N-phenylmaleimide or Dacthal
Or two kinds.
Further, the heat-resistant agent is the mixing of N-phenylmaleimide and Dacthal
Object, weight ratio N-phenylmaleimide: Dacthal 4:6.
The beneficial effects of the present invention are:
The present invention is anti-condensation using traditional heating method progress for current switchgear, and this method is to the big generation of cabinet internal-external temperature difference
Condensation can not judge, lead to not eliminate condensation the problem of, a kind of switchgear condensation-preventing device, including cabinet body are provided, it is described
Insulating layer is arranged in cabinet body outer surface, and the cabinet body inside top is taper, and is opened up along the vertical direction on the cabinet body inner wall more
Two lower ends position corresponding section of groove, the cabinet body lower part and the groove offers inclined drainage hole, described
The chill item that temperature is lower than the intracorporal electrical equipment surface temperature of the cabinet, two lower ends of the chill item are provided in groove
It is located at the upper end of drainage hole corresponding thereto, is provided between the chill item and groove for being dropped to the chill item
The first temperature sensor is arranged on the cabinet body inner wall, is arranged in the cabinet body for detecting inside for the semiconductor chilling plate of temperature
Second temperature sensor, setting in the cabinet body is arranged in the dew point hygrometer of air themperature, the intracorporal electrical equipment outer surface of cabinet
Drier for electrical equipment to be dried, is arranged PLC controller in the cabinet body, the PLC controller with it is described
First temperature sensor, dew point hygrometer, second temperature sensor, semiconductor chilling plate are connected with drier signal.In this way, when dew
When dew-point temperature is higher than the electrical equipment surface temperature that second temperature sensor detects in the cabinet body that point instrument detects, on the one hand
Can start semiconductor chilling plate cooled down to chill item so that chill surface temperature be lower than electrical equipment surface temperature, with
So that dew condensation phenomenon preferentially occurs on chill surface, to reduce the moisture in cabinet body in air, on the other hand can pass through
Electrical equipment surface is dried in drier, to further decrease the possibility that electrical equipment surface generates dew condensation phenomenon.
Wherein, the drier includes that setting is equipped with drying inside the intracorporal air accumulator of the cabinet, the air accumulator
Compressed air, the cabinet body inner wall higher slice is horizontally disposed with multiple other ends closed at one end and passes through pipeline and the air accumulator
The U-shaped pipe that gas outlet electromagnetic valve is connected, left side, the right side of institute's U-shaped pipe and the intracorporal electrical equipment of the cabinet
It is facing with trailing flank, row's air nozzle, the gas outlet solenoid valve of the air accumulator are provided on the U-shaped pipe medial surface
Door is connect with the PLC controller signal.
Waterproof layer in the present invention prepares corrosion-resistant, water-fast composite coating material as primary raw material using polyaniline, sodium metasilicate
Material.Polyaniline has good antiseptic property, is passivated metal, the oxide layer to shield is formed in metal surface, and apply
Covering suitable coating can cause corrosion potential to migrate, to reduce corrosion of metal rate.And because it is easy to get with raw material,
Many advantages, such as synthesizing simple, pollution-free, light weight, and it is considered as the environmentally acceptable high-efficency anticorrosive paint of a new generation.This
Invention is blended using chloroform and n,N-Dimethylformamide and is used as organic solvent, and the dissolubility of polyaniline is increased.Poly- methyl
Methyl acrylate and sodium metasilicate and polyaniline act synergistically, and the adhesive force of reinforcing material solves pure polyaniline and glues to metal
The very poor problem of knot property.Sodium metasilicate has many advantages, such as that cohesive force is strong, intensity is higher, wear-resisting, acid resistance, heat-resist, dodecane
Base sodium sulphate enhances the stability of system as surfactant.
Wherein, waterproofing agent enhances hydrophobicity, improves the impervious moisture protection of material, and corrosion-resistant agent improves material resistance to acid and alkali
Can, enhance chemical stability, extends the service life of material.Heat-resistant agent can accelerate crystalline rate, increase crystal density and promote
Fine grain size significantly improves the heat distortion temperature of coating.Antirust agent can form on parts surface and store one layer of profit
Synovial membrane, can inhibit corrosion caused by moisture and many other chemical analysis, and acetone is organic solvent.
Waterproof layer in the present invention is organically combined by a variety of materials, is played electric power made from the synergistic effect of each component and is set
Standby dedicated composite coating material, mechanical performance and excellent insulating property, water-fast, high-low temperature resistant, resistant to chemical etching, adhesive force
By force, antirust can keep stability, can use for a long time in high and low temperature environment, comprehensive performance is excellent for a long time in acid or alkali environment
It is different.The composite coating material can power equipment surface formed one layer of fine and close protective film, it is etch-proof simultaneously, stop or prolong
The invasion of slow moisture, oxygen and other impurity, plays the effect of antirust, extends the service life of power equipment.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Detailed description of the invention
Fig. 1 is structure of the main view of the invention；
Fig. 2 is structure schematic top plan view of the invention；
Fig. 3 is the structural schematic diagram of U-shaped pipe in the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Attached drawing 1-3, the technical solution of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is this
A part of the embodiment of invention, instead of all the embodiments.Based on described the embodiment of the present invention, the common skill in this field
Art personnel every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one
As shown in Figure 1, Figure 2 and Figure 3, a kind of switchgear condensation-preventing device, including cabinet body 1,1 outer surface of the cabinet body setting heat preservation
Layer 2,1 inside top of cabinet body is taper, and opens up a plurality of groove 3, the cabinet body on 1 inner wall of the cabinet body along the vertical direction
1 lower part and two lower ends position corresponding section of the groove 3 offer inclined drainage hole 4, are provided in the groove 3
Lower than the chill item 6 of 5 surface temperature of electrical equipment in the cabinet body 1, two lower ends of the chill item 6 are located at temperature
The upper end of drainage hole 4 corresponding thereto is provided with for the chill item 6 cooling between the chill item 6 and groove 3
The first temperature sensor 8 is arranged on 1 inner wall of cabinet body, is arranged in the cabinet body 1 for detecting inside for semiconductor chilling plate 7
Second temperature sensor 10, the cabinet body 1 is arranged in the dew point hygrometer 9 of air themperature, 5 outer surface of electrical equipment in the cabinet body 1
The interior drier being arranged for electrical equipment 5 to be dried, the cabinet body 1 is interior to be arranged PLC controller 11, the PLC control
Device 11 processed and first temperature sensor 8, dew point hygrometer 9, second temperature sensor 10, semiconductor chilling plate 7 and drier
Signal connection.
The drier includes the air accumulator 12 being arranged in the cabinet body 1, and drying is housed inside the air accumulator 12
Compressed air, the 1 inner wall higher slice of cabinet body is horizontally disposed with multiple other ends closed at one end and passes through pipeline and the air accumulator
A left side for electrical equipment 5 in the U-shaped pipe 14 that 12 gas outlet electromagnetic valve 13 is connected, institute's U-shaped pipe 14 and the cabinet body 1
Side, right side and trailing flank are facing, are provided with row's air nozzle 15, the air accumulator on 14 medial surface of U-shaped pipe
12 gas outlet electromagnetic valve 13 is connect with 11 signal of PLC controller.
Dustcloth 16 is provided in the drainage hole 4.
The quantity of the U-shaped pipe 14 is 4.
Heater 17 is set in the cabinet body 1, and the heater 17 is interconnected with 11 signal of PLC controller.
Waterproof layer 18 is set outside the insulating layer 2.
The component and its content that the waterproof layer includes are as follows: 15 parts by weight of polyaniline, 2 weight of polymethyl methacrylate
Part, 6 parts by weight of chloroform, 40 parts by weight of n,N-Dimethylformamide, 15.2 parts by weight of sodium metasilicate, lauryl sodium sulfate
2.5 parts by weight, 7 parts by weight of nano silica, 5.8 parts by weight of sodium methyl silicate, 3.5 parts by weight of N-phenylmaleimide,
8.7 parts by weight of hexa, 22 parts by weight of acetone, 46 parts by weight of deionized water.
In the embodiment, a kind of switchgear condensation-preventing device, including cabinet body, the cabinet body outer surface setting heat preservation are provided
Layer, the cabinet body inside top is taper, and opens up a plurality of groove on the cabinet body inner wall along the vertical direction, the cabinet body lower part
Inclined drainage hole is offered with two lower ends position corresponding section of the groove, temperature is provided in the groove and is lower than
The chill item of the intracorporal electrical equipment surface temperature of cabinet, two lower ends of the chill item are located at corresponding thereto
The upper end of drainage hole is provided with the semiconductor chilling plate for cooling down to the chill item, institute between the chill item and groove
It states and the first temperature sensor is set on cabinet body inner wall, the dew point hygrometer for detecting Inside Air Temperature, institute are set in the cabinet body
The intracorporal electrical equipment outer surface setting second temperature sensor of cabinet is stated, is arranged in the cabinet body for being done to electrical equipment
Dry drier, the cabinet body is interior to be arranged PLC controller, the PLC controller and first temperature sensor, dew point
Instrument, second temperature sensor, semiconductor chilling plate are connected with drier signal.In this way, when in the cabinet body that dew point hygrometer detects
When dew-point temperature is higher than the electrical equipment surface temperature that second temperature sensor detects, it on the one hand can start semiconductor refrigerating
Piece cools down to chill item so that chill surface temperature is lower than electrical equipment surface temperature, so that dew condensation phenomenon is preferentially sent out
Life is on chill surface, so that the moisture in cabinet body in air is reduced, it on the other hand can be by drier to electrical equipment
Surface is dried, to further decrease the possibility that electrical equipment surface generates dew condensation phenomenon.
Wherein, the drier includes that setting is equipped with drying inside the intracorporal air accumulator of the cabinet, the air accumulator
Compressed air, the cabinet body inner wall higher slice is horizontally disposed with multiple other ends closed at one end and passes through pipeline and the air accumulator
The U-shaped pipe that gas outlet electromagnetic valve is connected, left side, the right side of institute's U-shaped pipe and the intracorporal electrical equipment of the cabinet
It is facing with trailing flank, row's air nozzle, the gas outlet solenoid valve of the air accumulator are provided on the U-shaped pipe medial surface
Door is connect with the PLC controller signal.
The quantity of U-shaped pipe is 4, it is clear that is also an option that other quantity, such as 1,2 according to the size of cabinet body
A, 3,5,6,7 or 8 etc..
Embodiment two
The difference of itself and embodiment one is: the component and its content that the waterproof layer includes are as follows: 16 parts by weight of polyaniline, poly- first
2.5 parts by weight of base methyl acrylate, 7 parts by weight of chloroform, 42 parts by weight of n,N-Dimethylformamide, 16 weight of sodium metasilicate
Part, 2.8 parts by weight of lauryl sodium sulfate, 8 parts by weight of nano silica, 6 parts by weight of sodium methyl silicate, four chloros are to benzene two
3.7 parts by weight of formic acid dimethyl ester, 8.9 parts by weight of cinnamic acid, 23 parts by weight of acetone, 48 parts by weight of deionized water.
Embodiment three
The difference of itself and embodiment one is: the component and its content that the waterproof layer includes are as follows: 17 parts by weight of polyaniline, poly- first
3 parts by weight of base methyl acrylate, 7.5 parts by weight of chloroform, 44 parts by weight of n,N-Dimethylformamide, 16.5 weight of sodium metasilicate
Part, 3 parts by weight of lauryl sodium sulfate, 9 parts by weight of nano silica, 6.1 parts by weight of calcium stearate, four chloro terephthaldehydes
3.9 parts by weight of dimethyl phthalate, 9 parts by weight of poly-aspartate, 24 parts by weight of acetone, 50 parts by weight of deionized water.
Example IV
The difference of itself and embodiment one is: the component and its content that the waterproof layer includes are as follows: 18 parts by weight of polyaniline, poly- first
4 parts by weight of base methyl acrylate, 8 parts by weight of chloroform, 48 parts by weight of n,N-Dimethylformamide, 17 parts by weight of sodium metasilicate,
It is 3.2 parts by weight of lauryl sodium sulfate, 10 parts by weight of nano silica, 6.2 parts by weight of waterproofing agent, 4 parts by weight of heat-resistant agent, resistance to
9.2 parts by weight of corrosive agent, 25 parts by weight of acetone, 52 parts by weight of deionized water.
The waterproofing agent is the mixture of sodium methyl silicate and calcium stearate, and weight ratio sodium methyl silicate: calcium stearate is
7:3。
The corrosion-resistant agent is the mixture of hexa, cinnamic acid and poly-aspartate, weight ratio hexa-methylene
Tetramine: cinnamic acid: poly-aspartate 2:3:5.
The heat-resistant agent is the mixture of N-phenylmaleimide and Dacthal, weight ratio N-
Phenyl maleimide: Dacthal 4:6.
Embodiment five
The difference of itself and embodiment one is: the component and its content that the waterproof layer includes are as follows: 19 parts by weight of polyaniline, poly- first
4 parts by weight of base methyl acrylate, 9 parts by weight of chloroform, 50 parts by weight of n,N-Dimethylformamide, 18 parts by weight of sodium metasilicate,
3.4 parts by weight of lauryl sodium sulfate, 11 parts by weight of nano silica, 6.4 parts by weight of waterproofing agent, 4.2 parts by weight of heat-resistant agent,
9.3 parts by weight of corrosion-resistant agent, 26 parts by weight of acetone, 54 parts by weight of deionized water.
The waterproofing agent is sodium methyl silicate.
The corrosion-resistant agent is the mixture of hexa, cinnamic acid and poly-aspartate, weight ratio hexa-methylene
Tetramine: cinnamic acid: poly-aspartate 2:3:5.
The heat-resistant agent is the mixture of N-phenylmaleimide and Dacthal, weight ratio N-
Phenyl maleimide: Dacthal 4:6.
Embodiment six
The difference of itself and embodiment one is: the component and its content that the waterproof layer includes are as follows: 20 parts by weight of polyaniline, poly- first
5 parts by weight of base methyl acrylate, 10 parts by weight of chloroform, 52 parts by weight of n,N-Dimethylformamide, 18.5 weight of sodium metasilicate
Part, 3.6 parts by weight of lauryl sodium sulfate, 11 parts by weight of nano silica, 6.6 parts by weight of waterproofing agent, 4.3 weight of heat-resistant agent
Part, 9.5 parts by weight of corrosion-resistant agent, 28 parts by weight of acetone, 55 parts by weight of deionized water.
The waterproofing agent is the mixture of sodium methyl silicate and calcium stearate, and weight ratio sodium methyl silicate: calcium stearate is
7:3。
The corrosion-resistant agent is the mixture of hexa, cinnamic acid and poly-aspartate, weight ratio hexa-methylene
Tetramine: cinnamic acid: poly-aspartate 2:3:5.
The heat-resistant agent is Dacthal.
Comparative example one
With embodiment two, but unlike embodiment two, which does not add the component and its content that the waterproof layer includes
Add waterproofing agent and heat-resistant agent.
Comparative example two
With embodiment three, but unlike embodiment three, which does not add the component and its content that the waterproof layer includes
Add corrosion-resistant agent.
Comparative example three
With embodiment five, but unlike embodiment five, which will not the component and its content that the waterproof layer includes
Target product shakes in bottle swingging machine.
Performance test:
1) measuring mechanical property
In actual application, the mechanical performance of coating material is to measure the important performance assessment criteria of its durability.Coating is because matching
Square component ratio is different, and mechanical performance has certain difference.
It is poured into deployed mixed liquor into mold, obtains coating sample after solidifying at room temperature.Its specification are as follows: a length of 30
Mm, wide lO mm, with a thickness of 100 μm.Stress-strain test is carried out to paint layer using U.S.'s Mei Tesi CMT5305 universal testing machine,
Strain rate is 10mm/min.
Tensile strength is sample when being pulled off on puller system, and the load born on unit cross-sectional area uses N/mm2It indicates,
Calculation formula is as shown in 1-1:
P=F/S (1-1)
In formula:
The tensile strength of mono- sample of P, N/mm2；
Power suffered on rupture cross section, N when F- sample fracture；
The area in S- sample fracture face, mm2。
Wherein, 1MPa=1N/mm2
Elongation at break is the ratio of the elongation and raw footage when sample is pulled off, and is expressed as a percentage, calculation formula such as 1-2 institute
Show:
E=(L1-L0)/L0 (1-2)
In formula:
Mono- elongation at break of E, %；
L0One sample raw footage, mm；
L1The length of part of the force, mm when-sample fracture.
2) water resistance test
It takes coating mixed liquor 30g in glass culture dish, spontaneously dries, film is made.Using the water-fast of water absorption rate characterization film
Property, film is cut into the square sample of 15mm × 15mm, weighs sample mass (being accurate to 0.001g).It puts it into and is equipped with
In the culture dish of distilled water, distilled water did not had the upper surface of film, impregnates take out afterwards for 24 hours at room temperature.It is gently wiped with filter paper
Fall the moisture of film surface, and weighs immediately.According to formula 2-1, the water absorption rate of film is calculated, each sample testing 3 times is made even
Mean value.
W=(m1-m0)/m0× 100% (2-1)
In formula, the water absorption rate of W- film, %；
m0The initial mass of sample, g；
m1Quality after sample water suction, g.
3) corrosion-resistant test
Three clean beakers are taken, the hydrochloric acid of 10% concentration, the NaOH solution of 10% concentration is prepared respectively, coating sample is soaked respectively
Enter in two kinds of prepared solution, after being kept for sealed environment 45 days, takes out the corrosion condition of coating sample observation film surface.
4) adhesive force is tested
Adhesive force test utilizes cross-hatching, is to coat on galvanized sheet iron to ground according to ISO2409 and GB/19286-98 standard
With a thickness of 121-250 μm of testing coating, well stroke lattice are carried out to coating sample, sweep off surface impurity, gently later with adhesive tape
It is intermediate to be placed in parallel with scribing line lattice, cutting part state is checked then to open adhesive tape close to 60 ° of angles with hand levelling glue band.
5) long-term height temperature stability
The coating of 1000mg/L is respectively configured, respectively 200mL is taken to be respectively placed in ageing can, constant temperature is placed at -50 DEG C by its elder generation
90 days, then constant temperature was placed 90 days at 100 DEG C, measured its interfacial tension with surface tension instrument, and calculated interfacial tension growth
Rate investigates the height temperature stability of coating.
The Measurement results such as table 1 of embodiment one to six and comparative example one to three:
The test result of table 1 embodiment and comparative example
As can be seen from Table 1: 1) embodiment one to six shows good comprehensive performance: having excellent mechanical performance, draws
Intensity is stretched in 21.6MPa or more, and elongation at break is 115% or more, and water-fast, resistant to chemical etching, adhesive force is strong, in high/low temperature ring
Under border, performance is stablized.2) embodiment one to three is a kind of single substance using heat-resistant agent, waterproofing agent and corrosion-resistant agent, real
Example four to six is applied, uses heat-resistant agent, waterproofing agent and corrosion-resistant agent for the mixture of two or three of substance, example IV to six materials
The comprehensive performance of material is better than embodiment one to three；3) comparative example one lacks waterproofing agent and heat-resistant agent compared with embodiment two；It is right
Ratio two lacks corrosion-resistant agent compared with embodiment three；The performance of the material of comparative example one to three is poorer than embodiment one to six.It is anti-
Aqua, heat-resistant agent, corrosive agent, these additives, in addition to improve material characteristic property other than, also with polyaniline, nano-silica
SiClx and sodium metasilicate synergistic effect, the comprehensive performance of reinforcing material.Target product obtained is shaken in bottle swingging machine, promotes to divide
Being uniformly distributed between son, performance is more stable.Illustrate to be complementary between each raw material, lacks any raw material, material
Performance will be decreased obviously.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of switchgear condensation-preventing device, including cabinet body, it is characterised in that: insulating layer is arranged in the cabinet body outer surface, described
Cabinet body inside top is taper, and opens up a plurality of groove on the cabinet body inner wall along the vertical direction, the cabinet body lower part with it is described
Two lower ends position corresponding section of groove offers inclined drainage hole, and temperature is provided in the groove lower than the cabinet
Two lower ends of the chill item of intracorporal electrical equipment surface temperature, the chill item are located at drainage hole corresponding thereto
Upper end, be provided between the chill item and groove for the chill item cool down semiconductor chilling plate, the cabinet body
First temperature sensor is set on inner wall, the dew point hygrometer for detecting inner air dew-point temperature is set in the cabinet body, it is described
Second temperature sensor is arranged in the intracorporal electrical equipment outer surface of cabinet, is arranged in the cabinet body for electrical equipment to be dried
Drier, PLC controller is set in the cabinet body, the PLC controller and first temperature sensor, dew point hygrometer,
Second temperature sensor, semiconductor chilling plate are connected with drier signal.
2. a kind of switchgear condensation-preventing device according to claim 1, it is characterised in that: the drier includes setting
Equipped with dry compressed air inside the intracorporal air accumulator of the cabinet, the air accumulator, the cabinet body inner wall higher slice is horizontal
The U-shaped pipe that multiple other ends closed at one end are connected by pipeline with the gas outlet electromagnetic valve of the air accumulator, institute U are set
Type pipeline and the left side, right side and trailing flank of the intracorporal electrical equipment of the cabinet are facing, on the U-shaped pipe medial surface
It is provided with row's air nozzle, the gas outlet electromagnetic valve of the air accumulator is connect with the PLC controller signal.
3. a kind of switchgear condensation-preventing device according to claim 2, it is characterised in that: be provided in the drainage hole anti-
Dirt cloth.
4. a kind of switchgear condensation-preventing device according to claim 3, it is characterised in that: the quantity of the U-shaped pipe is
1-8.
5. a kind of switchgear condensation-preventing device according to claim 4, it is characterised in that: setting heating in the cabinet body
Device, the heater and the PLC controller signal interconnect.
6. a kind of switchgear condensation-preventing device according to any one of claims 1 to 5, it is characterised in that: the insulating layer
Outside setting waterproof layer.
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| CN201811139770.9A CN108963786B (en) | 2018-09-28 | 2018-09-28 | Condensation device is prevented to cubical switchboard |
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| CN111541154A (en) * | 2020-05-09 | 2020-08-14 | 山东联合电力产业发展有限公司 | Prevent condensation device in high-low pressure cabinet |
| CN112886444A (en) * | 2021-03-30 | 2021-06-01 | 刘美琴 | Low-voltage switchgear with aeration cooling function |
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| CN108963786B (en) | 2023-05-12 |
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