CN110265909A - A kind of intelligentized miniature switchgear - Google Patents
A kind of intelligentized miniature switchgear Download PDFInfo
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- CN110265909A CN110265909A CN201910671845.6A CN201910671845A CN110265909A CN 110265909 A CN110265909 A CN 110265909A CN 201910671845 A CN201910671845 A CN 201910671845A CN 110265909 A CN110265909 A CN 110265909A
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- foaming aluminum
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Classifications
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
- H02B11/10—Indicating electrical condition of gear; Arrangement of test sockets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/28—Earthing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a kind of intelligentized miniature switchgears, including monitoring system, contact arm measure annular device, energy absorption device, insulation board component, dehumidification system, it is explosion-proof to solve switchgear in the prior art, the effect of dehumidifying is poor, there are security risks for the insulation board of earthing switch, and the vacuum-degree monitoring of vacuum interrupter, the electric current and the larger problem of the equal difficulty of temperature monitoring of contact arm, it realizes and improves explosion-proof and effect on moisture extraction, it enables a device to minimize, and it is simple, accurately the vacuum degree of vacuum interrupter is monitored on-line, stable acquisition circuit breaker contact arm Real-time Monitoring Data, convenient for the purpose for handling temperature and current information linkage.
Description
Technical field
The present invention relates to vacuum circuit breaker fields, and in particular to a kind of intelligentized miniature switchgear.
Background technique
Switchgear (switchgear cabinet) is a kind of electrical equipment, and switchgear outside line is introduced into master control in cabinet and opens
It closes, subsequently into sub-control switch, each branch is set according to its needs.Such as instrument, automatic control, motor magnetic switch, various exchanges are connect
Tentaculum etc., some also set hyperbaric chamber and low-pressure chamber switchgear, are equipped with high voltage bus, such as power plant, and some is additionally provided with to protect master
Want the low-frequency load reduction of equipment.The main function of switchgear (switchgear) be generated electricity in electric system, transmitted electricity, distribution and
During electric energy is converted, electrical equipment is opened and closed, controlled and protected.Component in switchgear mainly has breaker, isolation
The composition such as switch, on-load switch, operating mechanism, mutual inductor and various protective devices.There are many classification method of switchgear, such as logical
Withdraw-type switch cabinet and fixed switching cabinet can be divided by crossing breaker mounting means；Or the difference according to cabinet body structure, it can divide
For open type switchgear, metal closed switch cabinet and metal enclosed armoured switch cabinet；It can be divided into again according to voltage class is different
High-tension switch cabinet, Medium Voltage Switchgear and low-tension switch cabinet etc..It is primarily adapted for use in power plant, substation, petrochemical industry, metallurgy roll
The various different occasions such as steel, industry light industry textile industry, industrial enterprise and residential quarters, skyscraper.
Switchgear is during long-term work, since electric elements inside is very more, and internal operating space very little, because
This these electrical component amount of heat for generating when being powered, will lead to switch in-cabinet temperature sharply increases, air pressure increase, and work as
When air pressure can not discharge in time, it will lead to switchgear explosion, bring the security risk and economic loss having.The prior art
In, it is all such as relief valve, rupture pressure disc by the way of outlet pressure that switchgear is explosion-proof, when air pressure rises it is very fast when, this kind of knot
Structure can not pressure in quick release cabinet, can still generate explosion.
For the switchgear for being internally provided with vacuum circuit breaker, need to keep internally dry.On the ground that there was dampness in the air
Area, inside switch cabinet are easy dampness, are unfavorable for safely and steadily running.In this regard, settling mode in the prior art is to switch
Heat generating device is added inside cabinet, accelerates into the evaporation rate of switch cabinet body internal moisture, then by possessed by switchgear
Ventilation hole etc. of taking a breath is discharged.However the dehumidification efficiency of this mode is low, and is easy to cause interior of the cabinet air humidity very big,
There is also hidden danger on electrical security.
Vacuum circuit breaker is to cut-off device in the extremely promising electric power of low pressure and middle pressure field, it be with vacuum for insulation and
The device for switching of arc quenching medium.Gas molecule is extremely rare in vacuum, and the chance that electron and molecule collides is few, therefore vacuum is disconnected
The dielectric strength of road device is very high.Vacuum circuit breaker has safe and reliable, service life length, maintenance mans compared with other types breaker
Work amount is small, the advantages that not polluting the environment.Breaker body and vehicle frame are fixed on a chassis, form circuit breaker cart.Due to
Hands injured has good interchangeability, therefore can greatly improve the reliability of power supply.Its concrete operating principle are as follows: circuit breaker cart
After being pushed to operating position, operating mechanism drives vacuum interrupter to close a floodgate by insulated pull rod and other devices, and electric current is through upper plum
Flower contact introduce, flow through wire outlet seat, upper contact arm, vacuum interrupter inner cavity dynamic and static contact, pass through lower contact arm, lower plum blossom touching
Head is fed out to route or equipment, when meeting with fault trip or needing interruption maintenance equipment, after operating mechanism receives trip signal
Movement moves vacuum interrupter separating brake by insulated pull rod and other device bands, so as to release the locking to circuit breaker cart, breaks
Road device handcart can retreat to testing position and complete follow-up work.
Vacuum interrupter is the core of vacuum circuit breaker.In order to realize disjunction and the arc extinguishing of electric current, vacuum interrupter
Interior pressure is generally not more than 10-2Pa.Therefore, vacuum degree is to determine one of the principal element of break performance of vacuum interrupter,
The reduction of vacuum degree will directly affect the connecting-disconnecting function of vacuum circuit breaker, will lead to when serious its cut-off it is entirely ineffective.Therefore, exist
There is an urgent need to measure and record the vacuum degree of vacuum interrupter in operation for practical application area.
In practical application, the test method of vacuum level of vacuum arc-quenching chamber mainly include the following types:
(1) industrial frequency withstand voltage method: the test for non-dismount arc-extinguishing chamber, the vacuum level of vacuum arc-quenching chamber detection of vacuum circuit breaker
It is live generally to be sent out using industrial frequency withstand voltage, two contact of vacuum circuit breaker is exactly pulled to specified open away from the work being gradually increased between contact
Frequency voltage is if being resistant to voltage 1min, i.e., otherwise as unqualified it is believed that vacuum degree is qualified to specified value.Practice have shown that adopting
It is a kind of simple and effective method with the vacuum degree that industrial frequency withstand voltage method detects serious vacuum interrupter inferior, but in critical
The arc-chutes of state are then helpless.For the vacuum interrupter that two or more are used in series, industrial frequency withstand voltage method is uncomfortable
For checking the vacuum degree of series connection arc-chutes simultaneously.In addition, big, heavy for the pressure-resistant power frequency testing transformer volume tested,
It is inconvenient, and price, it is not that each power transmission and transformation unit has the ability to configure.
(2) observation: due to being frequently accompanied by electric arc color change and inside when vacuum interrupter internal vacuum reduces
Part oxidation, so can be with routine observation to the vacuum interrupter of glass shell.The parts surfaces such as the shielding case inside when normal
Color should be very bright, and what is issued in drop-out current is blue arc light；When vacuum degree seriously reduces, internal color will become
Must be gloomy, it will be seen that kermesinus arc light in drop-out current.This method is only applicable to glass shell vacuum interrupter once in a while
Qualitative examination.
(3) red as fire meter method: being detected using spark leak detector, and when detection moves spark leak detector along arc extinguishing chamber surface,
There is different luminous situations in the lower inside of its high-frequency electric field effect.The vacuum degree of vacuum interrupter is identified according to luminous color.
This method is easy to operate, but can only qualitatively be judged, is suitable for glass tube vacuum arc-chutes, and be easy by human factor
It influences.
(4) getter color change determines: glass inside pipe wall evapotranspiring one layer of getter in vacuum interrupter manufacture.It should
On the one hand getter can maintain high vacuum with residual gas in adsorption tube, another aspect getter itself can indicate vacuum degree.
Maintenance personnel can with the naked eye judge vacuum degree quality according to getter color change.Likewise, this method is only applicable to pair
The qualitative examination of glass shell vacuum interrupter once in a while.
(5) magnetic control discharge method: for vacuum interrupter in the fabrication process, vacuum pressure is usually to use electric vacuum
Meter is to measure.After the completion of arc-chutes manufacture, the vacuum ionization ga(u)ge having thereon, which is regulated, to be just removed, and hereafter arc extinguishing is indoor true
Reciprocal of duty cycle commonly uses the magnetic control discharge method containing cylindrical magnet exciting coil to measure.Magnetic control discharge method is measurement finished product arc-chutes vacuum degree
One of better method and the currently the only preferable method for quantitative measuring of repeatability.Its principle is by the touching of vacuum interrupter
Head pulls open certain distance, applies a pulse voltage between contact, to generate a strong electrical field therebetween, while in arc extinguishing chamber contact
Between apply an axial high-intensity magnetic field again.The indoor electronics of arc extinguishing is spinned movement under the collective effect in strong electrical field and magnetic field at this time,
And collide ionization with residual gas molecule in arc-chutes, the ion for ionizing out forms ionic current in electric field.This from
Electron current is approximate with residual gas density directly proportional.Therefore by measurement ionic current, it can know the indoor vacuum degree of arc extinguishing.
But magnetic control discharge method cannot achieve on-line monitoring.
Other than above-mentioned common methods, for the detection of vacuum level of vacuum arc-quenching chamber, also there are as below methods in the prior art:
High-frequency discharge method, high-frequency current method, coupled capacitor method, electro-optical conversion method, ray method etc..However these existing vacuum extinctions
Vacuum measurement method in room is that service personnel is needed just to operate in maintenance, all cannot achieve the online prison of automation
It surveys.In the prior art, it also has tried to that pressure sensor device is arranged in vacuum extinction room, still, if pressure sensor device makes
Signal is transmitted with wired mode, signal wire passes through the very easy air-tightness for influencing vacuum interrupter when vacuum interrupter, if pressure
Force sensor uses wireless monitor (contactless) mode, and can there is a problem of what measurement was not allowed.
In addition, if major loop temperature is excessively high, can accelerate to heat and aoxidize, lead to such as fingertip in the breaker course of work
Phenomena such as thawing falls off, contact is burnt, insulation failure even causes burning, explosion when serious.In the prior art to open circuit
The monitoring mode of device contact arm single can only all measure temperature, can not link with specific size of current, and measurement is caused to be tied
Fruit only has referential, directly can not accurately be analyzed using measurement result.
Also, existing vacuum circuit breaker generally there are three or more grounding contact, between two neighboring grounding contact
It is separated with insulation board to avoid short circuit, insulation board is individual or connected or is articulated with switchgear inner wall, earthing position and switch
Still there is conducting risk between the inner wall of equipment (vacuum circuit breaker).
Summary of the invention
The purpose of the present invention is to provide a kind of intelligentized miniature switchgears, anti-to solve switchgear in the prior art
Quick-fried, dehumidifying effect is poor, and the insulation board of earthing switch is there are security risk, and the vacuum-degree monitoring of vacuum interrupter, contact arm
Electric current and the larger problem of the equal difficulty of temperature monitoring, realize improve explosion-proof and effect on moisture extraction, enable a device to minimize, and
And simply, accurately the vacuum degree of vacuum interrupter is monitored on-line, stable acquisition circuit breaker contact arm real-time monitoring number
According to convenient for the purpose for handling temperature and current information linkage.
The present invention is achieved through the following technical solutions:
A kind of intelligentized miniature switchgear, including low-pressure chamber, handcart room, bus-bar room, cable vault are set in the bus-bar room
Upper contact head box is set, circuit breaker cart, energy absorption device are provided in the handcart room, integral type mutual inductance is provided in the cable vault
Device contact box, earthing switch；The circuit breaker cart includes the upper contact arm being connected with upper wire outlet seat, under being connected with lower wire outlet seat
Contact arm, for the upper contact arm for being connected with upper contact head box, the lower contact arm is described for being connected with integral type mutual-inductor contact box
Vacuum interrupter is connected between upper wire outlet seat and lower wire outlet seat:
The circuit breaker cart further includes monitoring system, contact arm measure annular device:
The monitoring system includes Vacuum Balance chamber, optical fiber, by flat between the Vacuum Balance chamber and vacuum interrupter
Weighing apparatus metal film separates, and one end of the optical fiber is located at that Vacuum Balance is intracavitary, the other end is connected with monitoring unit, the monitoring unit
The light intensity transmitted for monitoring optical fiber；
The contact arm measure annular device is set on contact arm and/or lower contact arm, including induced electricity ring, current detecting
Ring, the induced electricity ring, current detecting ring are facing each other, and central control system is connected between induced electricity ring and current detecting ring, is also wrapped
It includes and is fixed on central control system towards induced electricity ring or the temperature sensor of current detecting ring center direction side；The middle control
System includes power module, wireless communication module, processing module；The power module is used to receive the electric energy of induced electricity ring generation
And it powers to wireless communication module, processing module, temperature sensor；The input terminal and current detecting ring, temperature of the processing module
It spends sensor to be connected, the output end of the processing module is connected with wireless communication module；
The inner wall of the handcart room also sets up energy absorption device, and the energy absorption device includes frame, partition, foaming aluminum, described
Frame is fixed in handcart chamber interior walls, and the gabarit of the foaming aluminum and the interior exterior feature of frame match, and the foaming aluminum is clogged to frame
In frame, wherein the thickness of the foaming aluminum is greater than the thickness of frame；The partition is fixed on foaming aluminum towards inside handcart room
One side surface；
The earthing switch is located in insulation board component, and the insulation board component includes the back for being fixed on cable vault's side wall
Plate, the side plate being fixed at left and right sides of backboard, the side plate is perpendicular to backboard；Backboard, side plate are made by insulating materials；
The side plate includes the first straight panel section, arc panel section, the second straight panel section being sequentially distributed from top to bottom, the arc panel section it is recessed
Facing towards another piece of side plate direction；Grounding contact mounting plate is set on the backboard, and the grounding contact mounting plate is used for
Grounding contact is installed, further includes the 4th groove opened up from backboard bottom, the 4th groove is located at grounding contact mounting plate
Underface；
It further include being located at the indoor dehumidification system of cable, the dehumidification system includes heating device, dehumidification device, described to remove
The bottom of wet device is arranged horn mouth, and the inside of dehumidification device is arranged air suction device, condensation bin, the air suction device respectively with loudspeaker
Mouth, condensation bin connection, air suction device is for air to be drawn in condensation bin from horn mouth；Exhaust outlet is set at the top of the condensation bin,
Condensation bin bottom connects drainpipe, and the drainpipe is from top to bottom towards inclination on the outside of cabinet body, and drainpipe extend out to switchgear
Outside.
For vacuum interrupter in high-pressure vacuum breaker in the prior art vacuum-degree monitoring it is complicated for operation, be difficult in real time
The problem of monitoring, and the monitoring mode of contact arm is single, and temperature measurement result can not link with size of current, the monitoring in the present invention
System is used to monitor the vacuum degree of vacuum interrupter, and contact arm measure annular device is used to monitor the electric current and temperature information of contact arm:
The monitoring system includes Vacuum Balance chamber, is budget metals film, light between Vacuum Balance chamber and vacuum interrupter
Fine one end is located at that Vacuum Balance is intracavitary, the other end is connected with monitoring unit, and the monitoring unit is used to monitor what optical fiber transmitted
Light intensity, therefore when vacuum degree keeps stablizing in vacuum interrupter, budget metals film remains stationary, and it is single to reach monitoring by optical fiber
The light intensity of member remains unchanged, and can judge that vacuum degree is good in vacuum extinction room.When vacuum interrupter leakage, vacuum degree reduce
When, budget metals both sides differential pressure of membrane changes, and budget metals film generates deformation under differential pressure action, necessarily sends out the reflection of light
Changing then is changed by the light intensity that optical fiber reaches monitoring unit at this time, can judge that vacuum interrupter may be revealed,
Monitoring unit can sound an alarm prompt staff and carry out inspection confirmation.The monitoring system structure of the application is simple, by flat
The flexible deformation of metal film, the borrow light intensity of weighing change to realize indirectly to the real-time monitoring of vacuum extinction indoor situations, overcome
Require the problem of staff could check the vacuum degree of vacuum interrupter in periodic inspection in the prior art.
Further, since optical fiber be across Vacuum Balance chamber, will not with vacuum interrupter occur it is any directly contact, therefore compared to show
Having in technology need to avoid in the mode of the inner wall aperture of vacuum interrupter threading transmission signal to vacuum extinction chamber air-tightness
Interference, and the stability of optical fiber short-distance transmission light is high, can guarantee very excellent measurement accuracy.In addition, if true
Light inadequate natural endowment in empty counter balance pocket, it is that Vacuum Balance chamber mentions that light source, which can be also flexibly arranged, in those skilled in the art as needed
For stable light.
The contact arm measure annular device is set on contact arm and/or lower contact arm, induced electricity ring therein, current detecting
Ring is annular in shape, convenient for being directly set on contact arm.Wherein induced electricity ring is for obtaining induced current, and current detecting ring is for real
When monitoring breaker contact arm in size of current, connect central control system between induced electricity ring and current detecting ring, central control system is first
First play connection function so that induced electricity ring connect with current detecting ring it is integral.Central control system is towards induced electricity ring or electric current
The fixed temperature sensor for detecting ring center direction side, is that temperature sensor is directed towards circuit breaker contact arm direction
, and include power module, wireless communication module, processing module in central control system, power module is for receiving induced electricity ring
The induced current of generation is simultaneously stored, these electric energy stored are used to pass to wireless communication module, processing module, temperature
Sensor power supply, enables the holding automatic work that the application is stable, without being additionally provided power supply.The input of processing module
End is connected with current detecting ring, temperature sensor, and the output end of processing module is connected with wireless communication module, therefore current detecting
Ring, temperature sensor institute real-time monitoring electric current, temperature information be first transmitted to processing module and handled, be transmitted to nothing later
Line communication module, is sent out by wireless communication module.The application carries out the transmission of signal by wireless communication module,
The effect of real-time monitoring, protective breaker and switchgear can be realized.The application is solved by contact arm measure annular device
The problem of monitoring mode of circuit breaker contact arm is single in the prior art, and temperature measurement result can not link with size of current, realizes
Stable acquisition circuit breaker contact arm Real-time Monitoring Data, can be by the purpose of temperature and current information linkage processing.
In the prior art, due to having a large amount of electrical component in switchgear, once device miniaturization will lead to narrow
Heat release is exceedingly fast in small space, either heat or moisture all can not quickly be discharged, and causes risk of explosion very big.And the application
In,
Energy absorption device is fixed inside handcart chamber interior walls, energy absorption device includes frame, partition, foaming aluminum, and wherein frame is used
It is fixed in handcart chamber interior walls, while providing installation site for foaming aluminum.Due to the gabarit and the interior wide phase of frame of foaming aluminum
Match, therefore foaming aluminum can be directly packed in frame, frame can also limit foaming aluminum, so that foaming aluminum is relatively steady
It is fixed.Wherein the thickness of foaming aluminum is greater than the thickness of frame, be foaming aluminum close to the part at the inner wall center of handcart room is to stretch out
Outside frame.Foaming aluminum is towards the side surface stationary barrier inside handcart room, to pass through partition for foaming aluminum and handcart
The circuit breaker cart of chamber interior is spaced.The present invention usually normal use when, energy absorption device will not rival car chamber interior open circuit
Device handcart brings any interference, and when handcart room internal temperature is soaring, pressure quickly increases, raised gas pressure is in foaming aluminum
On, foaming aluminum starts gradually deformable squeeze internal void under continuous compression, and high temperature height is constantly consumed according to law of conservation of energy
It calms the anger the energy of body, and then avoids the further raising of the inner wall internal pressure of handcart room, slow down the interior pars intramuralis gas of handcart room
Increase rate is pressed, the various pressure relief openings or ventilation mouth originally having in handcart room before pressure reaches capacity provide more
Venting duration, to significantly reduce the air pressure climbing speed inside handcart room.In addition, when explode unavoidable generation when,
On partition and foaming aluminum, foaming aluminum is compressed by moment for explosion wave momentary action, due to the limit and blocking of frame, foaming
The part that aluminium is located at outside frame, which can be depressed into frame side, is unfolded, and complete deformation occurs for the partial foaming aluminium during this,
Energy consumption greatly, therefore can absorb a large amount of shock wave kinetic energy；And the partial foaming aluminium for being located at lower portion is unfolded without normal direction side,
Therefore it can collapse towards handcart chamber interior walls direction, impact is outside the inner wall of handcart room is realized after energy passes through the partial foaming aluminium
Row.By the mutual cooperation of frame, partition, foaming aluminum in the application, big energy can be absorbed in instant of detonation, explosion is rushed
Wave is hit in such a way that absorption is combined with outlet to carry out pressure release, significantly reduces explosion scale.The application is compared to existing skill
In art only by the explosion-proof mode of the outlets energy such as relief valve, rupture pressure disc for, explosion-proof capabilities, explosion-proof effect have significantly
It is promoted.It should be noted that foaming aluminum can not be replaced with remaining energy-absorbing porous material in the prior art in the application, because only
There is the structure of this high intensity of foaming aluminum, big energy can be absorbed during by compression, deformation, collapsing；And it is existing
Have and is also used for the explosion-proof utilization of energy-absorbing in technology in the art without foaming aluminum.
There are problems that security risk, the application couple the earthing switch insulation board in vacuum circuit breaker in the prior art
Insulation board improves, and is provided with special insulation board component, and backboard is used to be fixed on the inner wall of cable vault, thereon connection ground connection
Contact mounting plate, for carrying out installation connection with the grounding contact of earthing switch, wherein grounding contact mounting plate and grounding contact
Between connection type use existing any connection type, such as be bolted, be clamped, clamp.The left and right of backboard
Two sides are respectively provided with side plate, therefore coat grounding contact from the left and right sides by the side plate of two sides, it is ensured that adjacently contact it
Between be adequately isolated.Since each grounding contact is all located in a application, for two adjacent grounding contacts
Speech, has two blocks of side plates and is obstructed therebetween, compared to traditional monolithic insulation mode obviously there is better anti-channeling to prevent short
Road effect.This programme also has double due to there is the presence of backboard Yu grounding contact mounting plate, between grounding contact and cable chamber interior walls
Layer isolation, therefore the conducting risk between grounding contact and breaker inner wall significantly reduces, the insulation safety of grounding contact has
It significantly improves.Wherein, side plate includes the first straight panel section, arc panel section, the second straight panel section being sequentially distributed from top to bottom, the arc
The concave surface of shape plate section is towards another piece of side plate direction, therefore the arc panel section on two blocks of side plates is expanded outward respectively, this
Space between the side plate of two blocks of region significantly increases, and this set is in order to the ground connection touching being connected on grounding contact mounting plate
The broader installation space of head, operates convenient for worker's installation and removal, while such setting also can further improve ground connection
Safe distance between contact and side plate reduces security risk.In addition, opening up groove, groove position in backboard bottom in the application
In the underface of grounding contact mounting plate, which can be used in improving heat dissipation first, so that more in ground connection maintenance process
Heat can dissipate outward to overflow；And the earth lead that grounding contact is connected can be stuck in breaker inner wall by the groove,
Common cable such as is set in cable chamber interior walls and buckles structure, and the groove of the application enables to earth lead compared with short distance
Card is carried out from the interior inner wall that can reach cable vault to set, and surrounds formation in backboard, side plate so as to avoid earth lead
The problem of mess therein is wound in space, it is ensured that it is regular that earth lead can lead to the progress of cable chamber interior walls as early as possible.
In addition, switchgear dehumidification efficiency is low in the prior art, and once switchgear minimized, inner air humidity pole
Greatly, safety is lower, and the dehumidification system that the application proposes thus, includes heating device and dehumidification device, dehumidification device passes through
Air suction device sucks wet air wherein from horn mouth, and is delivered in condensation bin.It is empty since air is heated by heating device
Moisture content is originally very high in gas, therefore wet air is condensed in condensation bin, and the liquid water being condensed out is from bottom
Drain at drainpipe, and the air after dehumidification by condensation is drained from the exhaust ports at top and returned in cabinet body.Water droplet converges
Gather in drainpipe, along drainpipe, is expelled to the outside of switchgear under the effect of gravity.The application is by dehumidification device and adds
Thermal combines, and the moisture that heating device is responsible for enter cabinet body accelerates evaporation, herein on basis, rich steam-laden air
Quickly be dehumidified device and siphon away and handled, moisture is discharged outside cabinet body, thus the application compared to it is traditional only according to
For the switchgear of heating method dehumidifying, dehumidification efficiency is obviously improved；And under the action of dehumidification device, it is able to maintain
Interior of the cabinet air humidity is in reduced levels, therefore can reduce security risk, improves the electrical security of interior of the cabinet, more
Added with the miniaturization for being conducive to switchgear.Further, since dehumidification device constantly sucks and air is discharged in the application, it can be significant
Aggravate the air flow rate in switchgear, be conducive to the evaporation efficiency for improving internal moisture, also advantageously improves internal and outer
The efficiency of boundary's progress air exchange.
Vacuum extinction outside setting sensing storehouse, the budget metals film, which will sense, is divided into pressure transmission chamber, true inside storehouse
Empty counter balance pocket, the pressure transmission chamber are connected to vacuum interrupter.The sensing storehouse preferably with the shell of vacuum interrupter one at
Type.
The monitoring unit can issue laser, and it is intracavitary that laser is transmitted through the fiber to Vacuum Balance.Monitoring unit passes through
Vacuum Balance is intracavitary and then form stable light source, and optical fiber is simultaneously as transmitting in this programme by laser stable being transferred to for optical fiber
The channel of light source and feedback light, monitoring unit can be with continuous emission excimer lasers, it also may be preferable for discontinuity transmitting laser.
The budget metals film is the aluminium foil that surface coats white paint.Surface coating white paint can be improved surface smoothness, benefit
In the reflection to light, the absorption to light is reduced.
The white paint includes the component of following parts by weight: 45~50 parts of alkyd resin, 4~6 parts of dispersing agent, and defoaming agent
0.2~0.5 part, 10~15 parts of zinc sulphide, 10~15 parts of barium sulfate, 25~30 parts of titanium dioxide, 30~40 parts of solvent.This formula
Middle titanium dioxide is used as auxiliary brightening agent, the paint enabled to as most important brightening agent, zinc sulphide and barium sulfate
Guarantee pure white, the absorption to light is further decreased, to reflect more light.In addition, a large amount of titanium dioxide in this programme
Addition, titanium dioxide always in the form of solia particle exist in white paint, be coated in aluminium foil surface after, aluminium can be conducive to
Foil surface forms diffusing reflection, and under the conditions of diffusing reflection, what budget metals film can be more stable when deformation occurs ensures optical fiber
The light of varying strength is received, thus under the conditions of avoiding budget metals film that mirror-reflection occurs, before and after the deformation of budget metals film
Intensity of illumination changes little situation and occurs at optical fiber.
The side wall of the Vacuum Balance chamber opens up the first groove, by Transparent Parts between first groove and Vacuum Balance chamber
It separates, light source is set in the first groove.This programme provides the mode of light source for another kind for Vacuum Balance chamber.
Preferably, the Transparent Parts are vacuum glass.Vacuum glass has excellent heat-insulating capability, can be avoided light source hair
It is intracavitary that heat out enters Vacuum Balance.
A kind of on-line monitoring method of high-pressure vacuum breaker vacuum degree, comprising the following steps:
(a) airtight Vacuum Balance chamber is set, make between Vacuum Balance chamber and vacuum interrupter by budget metals film every
It opens；
(b) the intracavitary light intensity of monitoring Vacuum Balance: if the intracavitary light intensity of Vacuum Balance remains unchanged, judge vacuum interrupter
Normally；If the intracavitary light intensity of Vacuum Balance changes, judge that vacuum interrupter is revealed.
If vacuum interrupter leaks, the pressure of Vacuum Balance chamber and vacuum interrupter is uneven, causes budget metals
The reflective light intensity of film deformation, deformation front and back, budget metals film is different, and then can realize whether real-time monitoring arc-chutes vacuum lets out
Leakage.
The intracavitary light intensity of Vacuum Balance is by being inserted into the intracavitary fiber-optic monitoring of Vacuum Balance.Optical fiber has anti-electromagnetism and original
The performance of sub- radiation interference, the mechanical performance that diameter is thin, matter is soft, light-weight；And there is insulation, inductionless electric property and resistance to
Water, high temperature resistant, corrosion resistant chemical property etc., are resistant to the extreme condition of vacuum interrupter.
Light source is provided to Vacuum Balance chamber in monitoring process.The light source is by optical fiber to the intracavitary transmission of Vacuum Balance
Laser.
Further, the induced electricity ring and current detecting ring are coaxial, and all cover outside contact arm；The central control system connection
At the top of induced electricity ring, current detecting ring, the lower surface of central control system, and temperature sensor is arranged in the temperature sensor
It is in contact with circuit breaker contact arm.Induced electricity ring and current detecting ring are coaxial, facilitate ensuring that the two is stable simultaneously and cover on contact arm,
Central control system is connected to the top of induced electricity ring, current detecting ring, and the lower surface of central control system is arranged in temperature sensor, this
Kind structure enables under the gravity of present apparatus entirety, and the temperature sensor above the contact arm of position is naturally stablized with contact arm
Contact.
The induced electricity ring is current transformer.The current detecting ring is Rogowski coil.The processing module is modulus
Converter.
Supporting plate, upper surface setting and the open circuit of the supporting plate are fixed in the bottom end of the induced electricity ring or current detecting ring
The groove that device contact arm bottom matches.The bottom of groove and circuit breaker contact arm matches, to be circuit breaker contact arm by groove
Accommodation groove is provided and holds contact arm measure annular device by supporting plate so that the bottom of circuit breaker contact arm is coated by groove,
Improve the job stability of contact arm measure annular device.
The opposite sides of the supporting plate passes through the hinged grip block of hinge, leads between the grip block and supporting plate outer wall
Cross tension spring connection.When circuit breaker contact arm is placed in groove, the grip block of two sides is pulled inwardly by tension spring, and then grip block
The two sides of circuit breaker contact arm are stuck in, are tightly clamped circuit breaker contact arm from two sides by grip block, so that contact arm measure annular
Stiction between device and contact arm is very big, provides the opposite connective stability between the application and contact arm, avoids the application
Slide displacement is generated easily along the axial direction of contact arm, significantly improves the stability during the application on-line monitoring.The clamping
Several double wedges are arranged in the inner surface of plate.The frictional resistance between grip block and contact arm is improved by double wedge, is further ensured that
The stability in use of the application.
One side surface of the foaming aluminum is affixed with handcart chamber interior walls, another side surface and partition are affixed；Foaming aluminum every
The projection of plate surface, falls completely in region locating for partition；The foaming aluminum is several towards the setting of a side surface of interior of the cabinet
The third groove being parallel to each other.It is sufficiently bonded between foaming aluminum and cabinet body, inner wall, improves the efficiency of pressure transmitting.Baffle surface
Product is greater than area of the foaming aluminum towards handcart room interior side, it is ensured that partition is sufficiently blocked to foaming aluminum, while making cabinet body
Internal high pressure can be acted on more on foaming aluminum by partition indirectly, improved the service efficiency to foaming aluminum, more filled
The energy-absorbing effect using foaming aluminum divided.When explosion happens, shock wave moment arrives at foaming aluminium surface, and foaming aluminum can be from third
Groove vicinity is crowded around to third inside grooves recess.Again since third groove is to be located at foaming aluminum towards the side inside handcart room
Surface is the part outside frame, so the partial foaming aluminium originally can be depressed into the exhibition of frame side according to foregoing description
It opens.So in the present solution, foaming aluminum marginal portion is unfolded to frame side, and central part is assembled to each third inside grooves
It collapses, active force reversed by two kinds simultaneously traction inside foaming aluminum at this time, the intrinsic friction of foaming aluminum is very big, therefore
The energy-absorbing energy-dissipating effect that foaming aluminum can more significantly be increased by the setting of third groove, it is explosion-proof to further increase energy-absorbing
Effect.
The partition is galvanized steel plain sheet；The density of the foaming aluminum is 0.1~0.4 times of metallic aluminium, curved specific stiffness is steel
1.5 times, damping capacity be metallic aluminium 5~10 times, 800~4000HZ of frequency of sound wave, 2.6~18GHz of wave frequency, hole
Gap rate 80~90%.
Soldering connection or Nian Jie by bonding agent between the foaming aluminum and partition；During the soldering connection, need
Using vacuum soldering process or nitrogen protection technique, and use Al-Si solder as middle layer, 585~600 after the completion of welding
5~15min is kept the temperature at a temperature of DEG C.There are many physical property differences between foaming aluminum and steel, so that the two is difficult to solder to.Tradition
Welding method there are problems that easily burning, easily form compound between fragile iron, lead metal, hardly result in good connector；And
According to modes such as friction welding (FW), supersonic welding, cold weldings, and it will receive the limitation inconvenience construction of weldment shape.Therefore this programme
It is middle to be brazed as middle layer using Al-Si solder, have low heating temperature, welding stabilization, deform it is small, weld seam very little excellent
Point.Soaking time and temperature after the completion of welding can be mutually complementary, are conducive to obtain preferable soldered fitting.
The grounding contact mounting plate is bolted on backboard；The first straight panel section, the second straight panel section are
Corrugated plating；The backboard, side plate are integrally formed.Bolt can also extend to the side wall of cable vault, and then will be originally by the bolt
Grounding contact mounting plate, backboard in application are also secured in cable chamber interior walls.It preferably, can also be using the bolt come same
When connect grounding contact.Corrugated plating can significantly increase the first straight panel section, the second straight panel as the first straight panel section, the second straight panel section
The surface area of the two sides of section, to improve the heat dissipation effect of the first straight panel section, the second straight panel section；Secondly it is straight that first can also be improved
Plate section, the ability of the second straight panel section external force resistance impact and destruction, extend the explosion-proof service life of the application.
4th groove is square, and several connecting rods being parallel to each other, institute are fixed between the two lateral walls of the 4th groove
Connecting rod is stated also to be made by insulating materials；Several connecting rod equidistantly distributeds；Uniformly divide on the connecting rod along own axes direction
Several cylinders to raise upward of cloth.When earth lead length is too long, it is then passed through after it capable of being wound several circles on connecting rod
4th groove, or several connecting rods are successively bypassed to realize the consumption to conductor length, so that it is miscellaneous to further avoid earth lead
Huddle the problem of putting winding.Cylinder can limit the earth lead for passing through or being wrapped on connecting rod, so that a piece-root grafting
Conducting wire is stable to be distributed between two neighboring cylinder, horizontal sliding is avoided, to further increase the stabilization to earth lead
Effect.
The fixed several condensing metal pieces of the side wall of the condensation bin, the condensing metal piece are divided into high and low two rows, and two rows of
Condensing metal piece is staggered；The bottom surface of the condensation bin is the inclined-plane that two sides are high, centre is low, and the drainpipe is connected to condensation
The extreme lower position in orlop face；Baffle is provided between the dehumidification device and heating device, the horn mouth is in baffle top surface
Projection, is fully located in the region of baffle top surface.Moist vapor is impacted in condensing metal on piece, and vapor can be quick
It is condensed on condensing metal piece surface.Two rows of condensing metal pieces are staggered, that is, refer to for adjacent two pieces of condensing metal pieces,
One piece is located at lower row positioned at upper row, another piece.During this arrangement enables to air to flow in condensation bin, Neng Gouyu
More, greater area of condensing metal piece is in contact, to adequately dehumidify.Furthermore staggered condensing metal piece is also
It can be improved stroke length of the air in condensation bin, so that the vapor in air is more sufficiently condensed.The bottom of condensation bin
Face is the inclined-plane that two sides are high, centre is low, is converged under the effect of gravity to intermediate low level convenient for condensed water, and then flows into drainpipe
In, avoid accumulation of the condensed water in condensation bin, it is ensured that condensed water can be discharged in time.By the barrier of baffle, avoid through adding
The air of thermal heating is directly dehumidified device absorption, and hot-air is sufficiently dissipated and spills over the various progress heat of interior of the cabinet
Exchange improves the evaporation efficiency of moisture everywhere in cabinet.
Compared with prior art, the present invention having the following advantages and benefits:
1, a kind of intelligentized miniature switchgear of the present invention, structure and the operation for monitoring system are extremely simple, by flat
The flexible deformation of metal film, the borrow light intensity of weighing change to realize indirectly to the real-time monitoring of vacuum extinction indoor situations, overcome
Requiring staff in the prior art in periodic inspection could check the vacuum degree of vacuum interrupter, is wireless real
When the problem of monitoring on-line.
2, a kind of intelligentized miniature switchgear of the present invention, due to optical fiber be across Vacuum Balance chamber, will not be with vacuum
Any direct contact occurs for arc-chutes, thus compared to the prior art in need to thread transmission letter in the inner wall aperture of vacuum interrupter
Number mode, avoid the interference to vacuum extinction chamber air-tightness, and the stability of optical fiber short-distance transmission light is high, energy
It is enough to guarantee very excellent measurement accuracy.
3, a kind of intelligentized miniature switchgear of the present invention, the holding that contact arm measure annular device can be stable are started building certainly
Make, without being additionally provided power supply.The input terminal of processing module is connected with current detecting ring, temperature sensor, processing module
Output end be connected with wireless communication module, therefore electric current, the temperature information of current detecting ring, temperature sensor institute real-time monitoring
It is first transmitted to processing module to be handled, is transmitted to wireless communication module later, be sent out by wireless communication module.
The effect of real-time monitoring, protective breaker and switchgear can be realized in the transmission that signal is carried out by wireless communication module.
The monitoring mode that contact arm measure annular device solves circuit breaker contact arm in the prior art is single, and temperature measurement result can not be with electricity
The problem of flowing size linkage, realizes stable acquisition circuit breaker contact arm Real-time Monitoring Data, can be by temperature and current information
Link the purpose handled.
4, a kind of intelligentized miniature switchgear of the present invention, when internal temperature is soaring, pressure quickly increases, raised gas
Pressure acts on foaming aluminum, and foaming aluminum starts gradually deformable squeeze internal void under continuous compression, according to law of conservation of energy
The constantly energy of consumption high temperature and high pressure gas, and then the further raising of interior of the cabinet pressure is avoided, slow down interior of the cabinet air pressure
Increase rate, the various pressure relief openings originally having before pressure reaches capacity for cabinet body or ventilation mouth provide more pressure releases
Time, to significantly reduce the air pressure climbing speed of interior of the cabinet.When explode unavoidable generation when, explosion wave moment
It acts on partition and foaming aluminum, foaming aluminum is compressed by moment, and due to the limit and blocking of frame, foaming aluminum is located at outside frame
Part, which can be depressed into frame side, is unfolded, and complete deformation occurs for the partial foaming aluminium during this, consumes energy greatly, therefore meeting
Absorb a large amount of shock wave kinetic energy；And the partial foaming aluminium for being located at lower portion is unfolded without normal direction side, therefore can be towards handcart
Chamber interior walls direction collapses, and impact is in cabinet body side wall realization outlet after energy passes through the partial foaming aluminium.
5, a kind of intelligentized miniature switchgear of the present invention coats ground connection touching from the left and right sides by the side plate of two sides
Head, it is ensured that adjacently being adequately isolated between contact.Since each grounding contact is all located in a application, for
For two adjacent grounding contacts, has two blocks of side plates and obstructed therebetween, it is bright compared to traditional monolithic insulation mode
It is aobvious that there is the anti-short-circuit effect of better anti-channeling.Due to there is the presence of backboard Yu grounding contact mounting plate, grounding contact and vacuum are disconnected
Also there is the double-deck isolation between the device inner wall of road, therefore the conducting risk between grounding contact and breaker inner wall significantly reduces, ground connection
The insulation safety of contact is significantly increased.Arc panel section on two blocks of side plates is expanded outward respectively, two blocks of this region side plate
Between space significantly increase, operated convenient for worker's installation and removal, while also can further improve grounding contact and side
Safe distance between plate reduces security risk.
6, a kind of intelligentized miniature switchgear of the present invention, by dehumidification device in conjunction with heating device, heating device is responsible for
The moisture in cabinet will be entered and accelerate evaporation, herein on basis, rich steam-laden air is quickly dehumidified device and siphons away simultaneously
It is handled, moisture is discharged outside cabinet body, therefore the application is compared to traditional switchgear for relying solely on heating method dehumidifying
For, dehumidification efficiency is obviously improved；And under the action of dehumidification device, be able to maintain interior of the cabinet air humidity be in compared with
Low-level, therefore can reduce security risk, improve the electrical security of interior of the cabinet.Further, since the dress that dehumidifies in the application
Continuous sucking and discharge air are set, the intracorporal air flow rate of cabinet can be significantly aggravated, is conducive to improve interior of the cabinet water
The evaporation efficiency divided also advantageously improves interior of the cabinet and the extraneous efficiency for carrying out air exchange.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the cross-sectional view of circuit breaker cart in the specific embodiment of the invention；
Fig. 2 is the schematic diagram that system is monitored in the specific embodiment of the invention；
Fig. 3 is the schematic diagram of pressure transmission chamber in the specific embodiment of the invention；
Fig. 4 is the structural schematic diagram of contact arm measure annular device in the specific embodiment of the invention；
Fig. 5 is the side view of contact arm measure annular device in the specific embodiment of the invention；
Fig. 6 is the central control system connection schematic diagram of specific embodiment of the invention contact arm measure annular device；
Fig. 7 is the structural schematic diagram of contact arm measure annular device in the specific embodiment of the invention；
Fig. 8 is the partial schematic diagram of supporting plate in the specific embodiment of the invention；
Fig. 9 is the structural schematic diagram of energy absorption device in the specific embodiment of the invention；
Figure 10 is the side view of energy absorption device in the specific embodiment of the invention；
Figure 11 is the schematic diagram of foaming aluminum in the specific embodiment of the invention；
Figure 12 is the structural schematic diagram of insulation board component in the specific embodiment of the invention；
Figure 13 is the structural schematic diagram of insulation board component in the specific embodiment of the invention；
Figure 14 is the schematic diagram of dehumidification system in the specific embodiment of the invention；
Figure 15 is the perspective view of condensation bin in the specific embodiment of the invention；
Figure 16 is the entirety sectional view of the specific embodiment of the invention.
Label and corresponding parts title in attached drawing:
1- breaker operation mechanism, 2- vacuum interrupter, 3- sensing storehouse, 301- budget metals film, 302- Vacuum Balance chamber,
303- optical fiber, 304- pressure transmission chamber, 4- monitoring unit, the first groove of 5-, 6- Transparent Parts, 7- light source, 8- pole, 9- insulation are drawn
Bar, 10- contact of breaker, 11- contact arm measure annular device, 111- induced electricity ring, 112- central control system, 113- temperature sensing
Device, 114- current detecting ring, 115- supporting plate, the second groove of 116-, 117- grip block, 118- tension spring, 12- chassis vehicle, 13- vehicle
Frame, the upper wire outlet seat of 14-, the upper contact arm of 15-, the upper Mume flower contact of 16-, wire outlet seat under 17-, contact arm under 18-, Mume flower contact under 19-,
20- low-pressure chamber, 21- handcart room, 22- bus-bar room, the cable vault 23-, 24- bus casing, 25- integral type mutual-inductor contact box, 26-
Energy absorption device, 27- earthing switch, 28- heating device, 29- Intelligent dehumidifying device, 30- arrester, 31- circuit breaker cart, 32-
Frame, 33- partition, 34- foaming aluminum, 35- third groove, 36- backboard, 37- the first straight panel section, 38- arc panel section, 39- second
Straight panel section, 40- grounding contact mounting plate, the 4th groove of 41-, 42- bolt, 43- connecting rod, 44- cylinder, 45- horn mouth, 46- inhale
Wind device, 47- condensation bin, 48- exhaust outlet, 49- drainpipe, 50- condensing metal piece, 51- ceramics are linked up with, 52- baffle, are touched on 53-
Head cartridge.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1:
A kind of intelligentized miniature switchgear, as shown in Figure 16, Fig. 1, including low-pressure chamber 20, handcart room 21, bus-bar room 22,
Cable vault 23, the bus-bar room 22 is interior to be arranged upper contact head box 53, and circuit breaker cart 31, energy-absorbing dress are provided in the handcart room 21
26 are set, integral type mutual-inductor contact box 25, earthing switch 27 are provided in the cable vault 23；The circuit breaker cart 31 includes
The upper contact arm 15 being connected with upper wire outlet seat 14, the lower contact arm 18 being connected with lower wire outlet seat 17, the upper contact arm 15 are used for and upper touching
Head cartridge 53 is connected, and the lower contact arm 18 with integral type mutual-inductor contact box 25 for being connected, the upper wire outlet seat 14 and lower outlet
Vacuum interrupter 2 is connected between seat 17: the circuit breaker cart 31 further includes monitoring system, contact arm measure annular device 11:
The monitoring system as shown in Fig. 2, include Vacuum Balance chamber 302, optical fiber 303, the Vacuum Balance chamber 302 with it is true
It is separated between empty arc-chutes 2 by budget metals film 301, one end of the optical fiber 303 is located in Vacuum Balance chamber 302, is another
End is connected with monitoring unit 4, and the monitoring unit 4 is for monitoring the light intensity that optical fiber 303 transmits；
The contact arm measure annular device 11 as shown in Figures 4 to 6, is set on contact arm 15 and lower contact arm 18, including
Induced electricity ring 111, current detecting ring 114, the induced electricity ring 111, current detecting ring 114 are facing each other, induced electricity ring 111 with
Central control system 112 is connected between current detecting ring 114, further includes being fixed on central control system 112 towards induced electricity ring 111 or electric current
Detect the temperature sensor 113 of 114 center of circle direction side of ring；The central control system 112 includes power module, wireless telecommunications
Module, processing module；The power module be used for receive induced electricity ring 111 generation electric energy and to wireless communication module, processing
Module, temperature sensor 113 are powered；The input terminal of the processing module is connected with current detecting ring 114, temperature sensor 113,
The output end of the processing module is connected with wireless communication module；
The inner wall of the handcart room 21 also sets up energy absorption device 26 as shown in Figs. 9 to 11, and the energy absorption device 26 includes
Frame 32, partition 33, foaming aluminum 34, the frame 32 are fixed on 21 inner wall of handcart room, the gabarit and frame of the foaming aluminum 34
The interior exterior feature of frame 32 matches, in the filling to frame 32 of foaming aluminum 34, wherein the thickness of the foaming aluminum 34 is greater than frame 32
Thickness；The partition 33 is fixed on foaming aluminum 34 towards the side surface inside handcart room 21；
Preferably, as shown in figure 16, energy absorption device 26 is not only provided in handcart room 21, is additionally arranged in cable vault 23.
The earthing switch 27 is located in insulation board component as shown in figure 12, and the insulation board component includes being fixed on electricity
The backboard 36 of 23 side wall of cable room, the side plate for being fixed on 36 left and right sides of backboard, the side plate is perpendicular to backboard 36；Backboard 36, side
Plate is made by insulating materials；The side plate include the first straight panel section 37 being sequentially distributed from top to bottom, arc panel section 38,
Second straight panel section 39, the concave surface of the arc panel section 38 is towards another piece of side plate direction；Ground connection is set on the backboard 36
Contact mounting plate 40, the grounding contact mounting plate 40 further include the opened up from 36 bottom of backboard for installing grounding contact
Four grooves 41, the 4th groove 41 are located at the underface of grounding contact mounting plate 40；
It further include the dehumidification system in cable vault 23, as shown in Figure 14 and Figure 15, dehumidification system includes heating device
28, dehumidification device 29, the bottom setting horn mouth 45 of the dehumidification device 29, the inside setting air suction device 46 of dehumidification device 29,
Condensation bin 47, the air suction device 46 are connected to horn mouth 45, condensation bin 47 respectively, and air suction device 46 is used for air from horn mouth 45
It is drawn in condensation bin 47；Exhaust outlet 48 is set at the top of the condensation bin 47, and 47 bottom of condensation bin connects drainpipe 49, the draining
Pipe 49 is from top to bottom towards inclination on the outside of cabinet body, and drainpipe 49 is extend out to outside switchgear.
In the present embodiment, setting sensing storehouse 3 on the outside of vacuum interrupter 2, the budget metals film 301 will be sensed inside storehouse 3
It is divided into pressure transmission chamber 304, Vacuum Balance chamber 302, the pressure transmission chamber 304 is connected to vacuum interrupter 2.The monitoring unit 4 can
Laser is issued, laser is transmitted in Vacuum Balance chamber 302 by optical fiber 303.Monitoring unit 4 is connect with optical fiber 303, optical fiber 303
It is connect with Vacuum Balance chamber 302, budget metals film 301 is located in vacuum interrupter 2, Vacuum Balance chamber 302 and vacuum interrupter 2
It is integrated.Laser is transferred in Vacuum Balance chamber 302 by monitoring unit 4 by optical fiber 303,301 energy of budget metals mould
Enough reflected lights.After the vacuum degree of breaker vacuum arc-chutes 2 leaks, the pressure of vacuum interrupter 2 is greater than Vacuum Balance
Pressure in chamber 302 causes the deformation of budget metals film 301 and the change of reflection of light, and it is single that optical fiber 303 transports light to monitoring again
Member 4, can judge whether vacuum interrupter vacuum leak occurs according to light intensity curve.
The present embodiment is compact-sized, using the collective effect of energy absorption device and dehumidification system, and cooperates contact arm measure annular
Device 11 is monitored in real time, effectively realizes the miniaturization of equipment.
Embodiment 2:
As shown in figure 3, the present embodiment and the difference of embodiment 1 are: it is recessed that the side wall of the Vacuum Balance chamber 302 opens up first
Slot 5 is separated between first groove 5 and Vacuum Balance chamber 302 by Transparent Parts 6, and light source 7 is arranged in first groove 5.Institute
Stating Transparent Parts 6 is vacuum glass.
Preferably, budget metals film 301 is the aluminium foil that surface coats white paint.The white paint includes the group of following parts by weight
Point: 45~50 parts of alkyd resin, 4~6 parts of dispersing agent, 0.2~0.5 part of defoaming agent, 10~15 parts of zinc sulphide, barium sulfate 10~15
Part, 25~30 parts of titanium dioxide, 30~40 parts of solvent.
Embodiment 3:
The contact arm measure annular device for vacuum circuit breaker as illustrated in figs. 7 and 8, on the basis of embodiment 1, institute
It states induced electricity ring 111 and current detecting ring 114 is coaxial, and all cover outside upper contact arm 15, lower contact arm 18；The central control system 112
It is connected to the top of induced electricity ring 111, current detecting ring 114, the temperature sensor 113 is arranged under central control system 112
Surface, and temperature sensor 113 is in contact with upper contact arm 15, lower contact arm 18.The induced electricity ring 111 or current detecting ring 114
The fixed supporting plate 115 in bottom end, the upper surface setting of the supporting plate 115 matches with upper contact arm 15,18 bottom of lower contact arm
Second groove 116.The opposite sides of the supporting plate 115 passes through the hinged grip block 117 of hinge, the grip block 117 with hold
It is connected between 115 outer wall of supporting plate by tension spring 118；Several double wedges are arranged in the inner surface of the grip block 117.
Wherein, the induced electricity ring 111 is current transformer；The current detecting ring 114 is Rogowski coil；The processing
Module is analog-digital converter.
Embodiment 4:
On the basis of embodiment 1, a side surface of the foaming aluminum 34 and 21 inner wall of handcart room be affixed, another side surface
It is affixed with partition 33；Foaming aluminum 34 is fallen completely in region locating for partition 33 in the projection on 33 surface of partition.The partition 33 is
Galvanized steel plain sheet.Soldering connection or Nian Jie by bonding agent between the foaming aluminum 34 and partition 33.During the soldering connection,
It needs using vacuum soldering process or nitrogen protection technique, and uses Al-Si solder as middle layer, 585 after the completion of welding
5~15min is kept the temperature at a temperature of~600 DEG C.It is bolted to connection between 21 inner wall of frame 32 and handcart room in the present embodiment.
Foaming aluminum performance used in the present embodiment is as follows:
Lightweight: density is 0.1~0.4 times of metallic aluminium；
High specific stiffness: its bending resistance specific stiffness is 1.5 times of steel；
High-damping shock stability and impact energy absorptivity: damping capacity is 5~10 times of metallic aluminium.Porosity is
84%, when 50% modification occurs, it can absorb the energy of 2.5MJ/cm3 or more.
Good acoustic function: when between 800~4000HZ of frequency of sound wave, the acoustical reduction coefficient of closed-cell foam aluminium up to 0.9 with
On.
Excellent electromagnetic shielding performance: when wave frequency is between 2.6~18GHZ, the electromagnetic shielding amount of foaming aluminum can
Up to 60~90dB.
Good thermal property: the closed-cell foam aluminium that porosity is 80~90%, thermal coefficient are 0.3~1W/mK.
Preferably, as shown in figure 11, the foaming aluminum 34 is several mutually towards the side surface setting inside handcart room 21
Parallel third groove 35.
As the application further embodiment, in the application, partition 33, which can be extended to, covers on 21 inner wall of handcart room
On cover.
Embodiment 5:
On the basis of embodiment 1, as shown in figure 13, grounding contact mounting plate 40 is fixed on backboard 36 by bolt 42
On；The first straight panel section 37, the second straight panel section 39 are corrugated plating；The backboard 36, side plate are integrally formed.Described 4th is recessed
Slot 41 is square, and fixes several connecting rods 43 being parallel to each other between the two lateral walls of the 4th groove 41, the connecting rod 43 also by
Insulating materials is made；Several 43 equidistantly distributeds of connecting rod；It is uniformly distributed on the connecting rod 43 along own axes direction several
The cylinder 44 to raise upward.
Embodiment 6:
On the basis of embodiment 1, the fixed several condensing metal pieces 50 of the side wall of the condensation bin 47, the condensing metal
Piece 50 divides for high and low two rows, and two rows of condensing metal pieces 50 are staggered；The bottom surface of the condensation bin 47 is that two sides are high, intermediate
Low inclined-plane, the drainpipe 49 are connected to the extreme lower position of 47 bottom surface of condensation bin；The dehumidification device 29 and heating device 28
Between be provided with baffle 52, the horn mouth 45 is fully located in the region of 52 top surface of baffle in the projection of 52 top surface of baffle.
Preferably, the air suction device is fan.The heating device is heating resistance wire.Cable vault's side wall setting two
A contour ceramics hook 51, the heating resistance wire are hung on two ceramics hooks 51.The dehumidification device 29 is located at heating
The top of device 28.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of intelligentized miniature switchgear, including low-pressure chamber (20), handcart room (21), bus-bar room (22), cable vault (23),
Upper contact head box (53) are set in the bus-bar room (22), circuit breaker cart (31), energy-absorbing dress are provided in the handcart room (21)
It sets (26), is provided with integral type mutual-inductor contact box (25), earthing switch (27) in the cable vault (23)；The breaker hand
Vehicle (31) includes the upper contact arm (15) being connected with upper wire outlet seat (14), and the lower contact arm (18) being connected with lower wire outlet seat (17) is described
For being connected with upper contact head box (53), the lower contact arm (18) is used for and integral type mutual-inductor contact box (25) phase upper contact arm (15)
Even, vacuum interrupter (2) are connected between the upper wire outlet seat (14) and lower wire outlet seat (17), it is characterised in that:
The circuit breaker cart (31) further includes monitoring system, contact arm measure annular device (11):
The monitoring system includes Vacuum Balance chamber (302), optical fiber (303), the Vacuum Balance chamber (302) and vacuum interrupter
(2) it is separated between by budget metals film (301), one end of the optical fiber (303) is located in Vacuum Balance chamber (302), is another
End is connected with monitoring unit (4), and the monitoring unit (4) is for monitoring the light intensity that optical fiber (303) transmits；
The contact arm measure annular device (11) is set on contact arm (15) and/or lower contact arm (18), including induced electricity ring
(111), current detecting ring (114), the induced electricity ring (111), current detecting ring (114) are facing each other, induced electricity ring (111)
Central control system (112) are connected between current detecting ring (114), further include being fixed on central control system (112) towards induced electricity ring
(111) or the temperature sensor (113) of current detecting ring (114) center of circle direction side；The central control system (112) includes
Power module, wireless communication module, processing module；The power module is used to receive the electric energy of induced electricity ring (111) generation simultaneously
To wireless communication module, processing module, temperature sensor (113) power supply；The input terminal and current detecting ring of the processing module
(114), temperature sensor (113) is connected, and the output end of the processing module is connected with wireless communication module；
The inner wall of the handcart room (21) is also set up energy absorption device (26), and the energy absorption device (26) includes frame (32), partition
(33), foaming aluminum (34), the frame (32) are fixed on handcart room (21) inner wall, the gabarit and frame of the foaming aluminum (34)
(32) interior exterior feature matches, in foaming aluminum (34) filling to frame (32), wherein the thickness of the foaming aluminum (34) is greater than
The thickness of frame (32)；The partition (33) is fixed on foaming aluminum (34) side surface internal towards handcart room (21)；
The earthing switch (27) is located in insulation board component, and the insulation board component includes being fixed on cable vault (23) side wall
Backboard (36), the side plate being fixed at left and right sides of backboard (36), the side plate is perpendicular to backboard (36)；Backboard (36), side plate are equal
It is made by insulating materials；The side plate include the first straight panel section (37) being sequentially distributed from top to bottom, arc panel section (38),
Second straight panel section (39), the concave surface of the arc panel section (38) is towards another piece of side plate direction；It is set on the backboard (36)
It sets grounding contact mounting plate (40), the grounding contact mounting plate (40) further includes from backboard (36) for installing grounding contact
The 4th groove (41) that bottom opens up, the 4th groove (41) are located at the underface of grounding contact mounting plate (40)；
It further include the dehumidification system in cable vault (23), the dehumidification system includes heating device (28), dehumidification device
(29), horn mouth (45) are arranged in the bottom of the dehumidification device (29), inside setting air suction device (46), cold of dehumidification device (29)
Solidifying storehouse (47), the air suction device (46) be connected tos with horn mouth (45), condensation bin (47) respectively, air suction device (46) for by air from
Horn mouth (45) is drawn in condensation bin (47)；Exhaust outlet (48) are set at the top of the condensation bin (47), condensation bin (47) bottom connects
Run in water pipe (49), the drainpipe (49) is from top to bottom towards inclination on the outside of cabinet body, and drainpipe (49) extend out to switchgear
Outside.
2. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the vacuum interrupter (2)
Outside setting sensing storehouse (3), the budget metals film (301), which will sense inside storehouse (3), is divided into pressure transmission chamber (304), Vacuum Balance
Chamber (302), the pressure transmission chamber (304) are connected to vacuum interrupter (2)；The monitoring unit (4) can issue laser, and laser is logical
Optical fiber (303) is crossed to be transmitted in Vacuum Balance chamber (302).
3. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the budget metals film
(301) aluminium foil of white paint is coated for surface；The white paint includes the component of following parts by weight: 45~50 parts of alkyd resin, point
It is 4~6 parts of powder, 0.2~0.5 part of defoaming agent, 10~15 parts of zinc sulphide, 10~15 parts of barium sulfate, 25~30 parts of titanium dioxide, molten
30~40 parts of agent.
4. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the induced electricity ring (111)
Coaxially with current detecting ring (114), and all cover upper contact arm (15) and/or lower contact arm (18) outside；The central control system (112) is even
It connects at the top of induced electricity ring (111), current detecting ring (114), the temperature sensor (113) is arranged in central control system
(112) lower surface, and temperature sensor (113) is in contact with upper contact arm (15) and/or lower contact arm (18)；The induced electricity ring
(111) or the bottom end of current detecting ring (114) is fixed supporting plate (115), upper surface setting and the upper touching of the supporting plate (115)
The second groove (116) that arm (15) and/or lower contact arm (18) bottom match；The opposite sides of the supporting plate (115) is logical
The hinged grip block of hinge (117) is crossed, is connect between the grip block (117) and supporting plate (115) outer wall by tension spring (118)；
Several double wedges are arranged in the inner surface of the grip block (117).
5. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the one of the foaming aluminum (34)
Side surface is affixed with handcart room (21) inner wall, another side surface and partition (33) are affixed；Foaming aluminum (34) is on partition (33) surface
Projection, fall completely in region locating for partition (33)；The foaming aluminum (34) towards a side surface of interior of the cabinet if be arranged
The dry third groove (35) being parallel to each other.
6. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the partition (33) is zinc-plated
Steel plate；The density of the foaming aluminum (34) is 0.1~0.4 times of metallic aluminium, curved specific stiffness is steel 1.5 times, damping capacity be
5~10 times, 800~4000HZ of frequency of sound wave, 2.6~18GHz of wave frequency, porosity 80~90% of metallic aluminium.
7. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the foaming aluminum (34) with every
Between plate (33) soldering connection or pass through bonding agent be bonded；During the soldering connection, need using vacuum soldering process or
Nitrogen protection technique, and use Al-Si solder as middle layer, after the completion of welding at a temperature of 585~600 DEG C heat preservation 5~
15min。
8. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the grounding contact mounting plate
(40) it is fixed on backboard (36) by bolt (42)；The first straight panel section (37), the second straight panel section (39) are corrugated plating；
The backboard (36), side plate are integrally formed.
9. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the 4th groove (41) is in
It is rectangular, fix several connecting rods (43) being parallel to each other between the two lateral walls of the 4th groove (41), the connecting rod (43) also by
Insulating materials is made；Several connecting rod (43) equidistantly distributeds；It is uniformly distributed on the connecting rod (43) along own axes direction
Several cylinders (44) to raise upward.
10. a kind of intelligentized miniature switchgear according to claim 1, which is characterized in that the condensation bin (47)
The fixed several condensing metal pieces (50) of side wall, the condensing metal piece (50) are divided into high and low two rows, and two rows of condensing metal pieces
(50) staggered；The bottom surface of the condensation bin (47) is the inclined-plane that two sides are high, centre is low, and the drainpipe (49) is connected to cold
The extreme lower position of solidifying storehouse (47) bottom surface；It is provided with baffle (52) between the dehumidification device (29) and heating device (28), it is described
Horn mouth (45) is fully located in the region of baffle (52) top surface in the projection of baffle (52) top surface.
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| CN201910671845.6A CN110265909B (en) | 2019-07-24 | 2019-07-24 | Intelligent small-sized switch equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910671845.6A CN110265909B (en) | 2019-07-24 | 2019-07-24 | Intelligent small-sized switch equipment |
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| CN110265909A true CN110265909A (en) | 2019-09-20 |
| CN110265909B CN110265909B (en) | 2024-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564782A (en) * | 2020-05-27 | 2020-08-21 | 广东正超电气有限公司 | Laser calibration method and device for KYN middle-placed switch cabinet movable contact and static contact |
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|---|---|
| CN110265909B (en) | 2024-05-10 |
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Effective date of registration: 20240416 Address after: 710000 No.005, east section of Xixian Avenue, Fengdong new town, Xixian New District, Xi'an City, Shaanxi Province Applicant after: XI'AN HAOTE POWER CIRCUIT-BREAKER MANUFACTURE Co.,Ltd. Country or region after: China Address before: No.5, Xixin Avenue, high tech Zone (West District), Chengdu, Sichuan 610000 Applicant before: SICHUAN ELECTRICAL APPARATUS GROUP CO.,LTD.(SEAC) Country or region before: China |
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