CN106786111B - A kind of micro- water treatment heating device of general GIS gas chamber - Google Patents
A kind of micro- water treatment heating device of general GIS gas chamber Download PDFInfo
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- CN106786111B CN106786111B CN201611123838.5A CN201611123838A CN106786111B CN 106786111 B CN106786111 B CN 106786111B CN 201611123838 A CN201611123838 A CN 201611123838A CN 106786111 B CN106786111 B CN 106786111B
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- heating
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- power supply
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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
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Resistance Heating (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Abstract
The present invention relates to a kind of micro- water treatment heating devices of general GIS gas chamber, the device includes heating layer, insulating layer and fixed bed, the heating layer fitting GIS device housing setting, heating layer draws power supply wiring and connects power supply, the insulating layer is wrapped in heating layer outer surface, heating layer and insulating layer are fixed on GIS device housing by the fixed bed, the maximum heating power when heating power of heating layer is configured to the normal operating temperature of the GIS device internal part when being heated using the heating unit no more than setting value.Compared with prior art, the present invention has many advantages, such as that versatile, heating power is excellent, heating effect is good, power consumption is low, modularization integrates, easy to operate, detachable.
Description
Technical field
The present invention relates to a kind of micro- water treatment facilities of GIS gas chambers, add more particularly, to a kind of micro- water process of general GIS gas chamber
Thermal.
Background technology
Ultrahigh-pressure gas insulated switchgear (GIS) gas chamber Wei Shui sources are more, with the growth of run time, easily go out
Gas chamber such as current transformer, breaker gas chamber etc. of the phenomenon that existing gas chamber excessive water content, especially internal unit load；Micro- water surpasses
Mark reduces the dielectric strength of plenum interior, SF6Electrolysate corrosivity is stronger under the influence of Wei Shui, to equipment damage compared with
Greatly.The micro- water process of GIS gas chambers is significant to maintained equipment safety, guarantee equipment normal operation.
Important component of the heating unit of existing GIS switchgears as switchgear is that can switch normal operation
Important guarantee.It, which is acted on, following 3 aspects：1) SF is prevented6SF in breaker6Gas is liquefied due to low temperature, is caused
During separating brake is switched, the arc blow-out pressure of arc-chutes is inadequate, causes switch cannot normal arc extinguishing；2) winter switching manipulation is prevented
It is driven in mechanism, the lubricating oil solidification of the components filling such as switching on and off action and energy storage motor gear causes frictional force to increase, shadow
Ring the correct action of switch；3) prevent generation condensation inside switchgear from causing electric discharge, flashover fault and secondary terminals corrosion
The generation of phenomenon.But existing heating unit there is no the relevant design for the micro- water process of GIS gas chambers, and heating effect is poor, energy
Consumption is higher, and with GIS device poor compatibility, security performance cannot ensure.
GIS device gas chamber excessive water content heat treatment be it is existing with cyclic nitrogen wash based on maintenance craft basis
On, local heating is carried out to GIS device housing by heating module, so as to improve GIS plenum interior temperature, equipment for gasification inner wall
The moisture of equipment surface material absorption is precipitated in condensation, improves high pure nitrogen and rinses the moisture that drying process is taken away, reduces cyclic nitrogen
The number of operations washed promotes the efficiency of site examining and repairing technique.The parameter specification of different GIS devices is different, thus needs to design not
The heating unit of same specification.Heating process is from SF6Gas recovery operation starts, and is washed until drying process terminates to cyclic nitrogen.GIS
Equipment normal working temperature is restricted, and temperature cannot be excessively high.Design a versatile, advantages of simple, energy-efficient, heating work(
The excellent micro- water process of GIS gas chambers of rate can obviously reduce the repair time with housing external heating device, shorten equipment power off time, ensure
The safety and stability of electric system.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of general GIS gas chamber is micro-
Water treatment heating device.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of micro- water treatment heating device of general GIS gas chamber, which includes heating layer, insulating layer and fixed bed, described
Heating layer fitting GIS device housing setting, heating layer draws power supply wiring and simultaneously connects power supply, insulating layer package
In heating layer outer surface, heating layer and insulating layer are fixed on GIS device housing by the fixed bed, the heating work(of heating layer
When the normal operating temperature that rate is configured to the GIS device internal part when being heated using the heating unit is no more than setting value
Maximum heating power.
The heating layer includes polylith heating plate and thermal-insulation baffle plate, number the adding according to heating layer of the heating plate
Thermal power is configured, and the heating plate is evenly distributed on GIS device casing surroundings, is embedded in and protects between adjacent two pieces of heating plates
Temperature dummy plate is isolated, and every piece of heating plate draws power supply wiring and connects power supply.
The heating plate and thermal-insulation baffle plate is arcuation flexible material.
The fixed bed is the adjustable hoop body structure of cylinder radius, and fixed bed lateral opening end is linked closely portion by screw
Part is fixed.
The device further includes control unit and execution unit, and the control unit adds by the way that execution unit connection is described
Thermosphere, the execution unit include control the device work whether relay, to heating unit carry out failure removal melt
Disconnected device and the timer that heating timing is carried out to heating unit, and then the control unit includes power switch, relay opens
Guard's valve and heating time load button.
The power supply of power supply wiring connection that heating layer is drawn is the power supply in GIS operation cabinets.
Compared with prior art, the invention has the advantages that：
(1) heating unit of the present invention is used as the micro- water process of GIS gas chambers, mounted on GIS device housing outer surface and GIS is set
Standby gas chamber is heated, and can be effectively improved GIS device gas chamber gas and internal device temperature, is conducive to GIS device internal condensation
Gasification and adsorption moisture precipitation, so as to improve the drying water that a nitrogen is washed, reduce cyclic nitrogen and wash dry number,
Promote the efficiency of site examining and repairing technique；
(2) heating unit of the present invention is divided into three layers of detachable form, simple in structure, and easy for installation, innermost layer is heating layer,
It is fitted closely with GIS surface of shell, ensures plus heat availability, heating layer are wrapped up by insulating layer, insulating layer, which reduces, to be added
The heat losses of thermosphere, improve the efficiency of heating surface, reduce energy consumption, and heating layer and insulating layer are fixed on GIS by fixed bed
It on housing, is linked closely and is fixed by screw, ensured appropriate fastening dynamics, and inner-layer device is protected, prevent rainwater
With the entrance of sundries；
(3) the micro- water Precipitation Characteristics of GIS device gas chamber know that temperature is higher, and micro- water precipitation rate is bigger, and amount of precipitation is more, but
Be GIS device internal part normal operating temperature no more than setting value, therefore the present invention to the heating power of heating layer into
It has gone and has distributed rationally, can not interfere with the normal operation of GIS device in the case where realizing optimal heating, and heating power
Configuration can be voluntarily configured by the number of heating plate, versatile, suitable for GIS breakers, current transformer, isolation
The gas chambers equipment such as switch；
(4) heating layer heating plate number of the present invention can voluntarily be configured, while pass through thermal insulation separation between adjacent heating plate
Plate is isolated, and further enhances heat-insulating property；
(5) fixed bed of the present invention be the adjustable hoop body structure of cylinder radius, so as to be directed to distinct device gas chamber and
Different models of equipment can carry out installation heating, easy to operate, and easy to disassemble and repair, convenience in transport are detachable when not used
It places；
(6) present invention setting control unit and execution unit are controlled and are protected to heating unit, realize heating unit
Reliable control, while can automatically cut off, have a safety feature in failure；
(7) heating unit power supply of the present invention is derived from GIS operation cabinets, without additional power supply.
Description of the drawings
Fig. 1 is the overall structure diagram of the micro- water treatment heating device of general GIS gas chamber of the present invention；
Fig. 2 is the fractionation schematic diagram of the micro- water treatment heating device of invention general GIS gas chamber；
Fig. 3 is that breaker heating power optimizes result of calculation in embodiment；
Fig. 4 is that current transformer heating power optimizes result of calculation in embodiment.
In figure, 1 is heating plate, and 2 be power supply wiring, and 3 be thermal-insulation baffle plate, and 4 be insulating layer, and 5 be fixed bed, and 6 is tight for screw
Buckle part.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1 and Figure 2, a kind of micro- water treatment heating device of general GIS gas chamber, the device include heating layer, insulating layer
4 and fixed bed 5, heating layer fitting GIS device housing setting, heating layer draws power supply wiring 2 and simultaneously connects power supply, insulating layer
4 are wrapped in heating layer outer surface, and heating layer and insulating layer 4 are fixed on GIS device housing by fixed bed 5, the heating of heating layer
Power configuration is that the normal operating temperature of the GIS device internal part when being heated using the heating unit is no more than setting value
When maximum heating power, the normal operating temperature setting value of GIS device internal part is 60 DEG C in the present embodiment, here
The switchgear wrapped up in GIS device internal part, that is, GIS device, such as breaker, current transformer.
Wherein, heating layer includes polylith heating plate 1 and thermal-insulation baffle plate 3, and heating plate 1 and thermal-insulation baffle plate 3 are arcuation flexibility
Material, the number of heating plate 1 are configured according to the heating power of heating layer, and heating plate 1 is evenly distributed on GIS device housing week
It encloses, embedded thermal-insulation baffle plate 3 is isolated between adjacent two pieces of heating plates 1, and every piece of heating plate 1 is drawn power supply wiring 2 and connected
Power supply, the power supply that the power supply wiring 2 that heating layer is drawn connects are the power supply in GIS operation cabinets.Fixed bed 5 is cylinder
The adjustable hoop body structure of shape radius, 5 lateral opening end of fixed bed are fixed by the screw component 6 that links closely, spiral shell in the embodiment
The silk component 6 that links closely includes screw rod and nut and the mounting hole for being correspondingly arranged at 5 lateral opening end of fixed bed, the screw rod are worn
It crosses the mounting hole and passes through nut and be fixed, being screwed into the length of screw rod by changing nut changes cylindrical hoop body
Radius.
The device further includes control unit and execution unit, and control unit connects heating layer by execution unit, performs list
Member include control the device work whether relay, to heating unit carry out failure removal fuse and to heating unit into
The timer of row heating timing, and then control unit includes power switch, relay start stop switch and heating time load button.
Know that temperature is higher according to the micro- water Precipitation Characteristics of GIS device gas chamber, micro- water precipitation rate is bigger, and amount of precipitation is more.But
Be GIS internal units normal operating temperature be no more than 60 DEG C, limitation is made that heating temperature.It is micro- by GIS device gas chamber
The exceeded heat treatment heat flow piercement simulation calculation of water optimizes, by establishing the Fluid-solid-heat Coupling Model under heating state,
The heat source of heating module inner heat power, the thermal convection current of hull outside and air, heating module and housing, housing and nitrogen are set
The correlated conditions such as heat transfer and environment temperature between gas, nitrogen and internal part, based on ANSYS Fluent thermodynamic fluids
Simulation software carries out the decoupling computation of the micro- water heat treatment of GIS device, calculates mathematical model and includes mass-conservation equation, moves
Measure the Closure equation group that 4 equations such as conservation equation, energy conservation equation, state equation are formed.
1) mass-conservation equation；According to mass conservation law, in flow process, the gross mass in system remains unchanged,
That is the quality material derivative that volume is divided in systems is equal to zero, is written as：
2) momentum conservation equation；The aggregated momentum change rate of arbitrary system should be equal to and act on outside all in the system in flow field
The resultant force of power：
3) energy conservation equation；Rate is determined according to the conservation of energy, in flow process, the increment of system gross energy is equal to external force
To the sum of system work and the extraneous heat come into, can be expressed as：
4) state equation；The basic variable of motion of viscous is speed, pressure, temperature and density, therefore three basic
Equation (continuity equation, the equation of momentum and energy equation) is not enough to establish Closure equation group, need to supplement state equation to establish pressure
Relationship between power, density and temperature.The physical quantity of usually description equilibrium state fluid is pressure volume V and temperature T, contacts this
Relational expression between three variables is known as state equation, is represented by：
Wherein：ρ is density；V is volume；T is temperature；T is the time；P is pressure；cpFor specific heat capacity；λ is fluid heat transferring system
Number；FiFor the mass force of unit quality in some directions；ui,uj(i, j=1,2,3) is velocity vector in x1、x2、x3Point in direction
Amount；Represent that solid convection current caused by translation or rotation is conducted heat,It is due to conduction
Caused hot-fluid；R0For gas universal constant.Four unknown numbers are v, p, T and F, and three fundamental equations add state equation just
Closing, can solve.It is calculated using subregion, the method for boundary coupling, it is assumed that the Temperature Distribution on coupling boundary, to one of them
Region is solved, and obtains the local heat flux density on coupling boundary and temperature gradient, is then solved using formula above another
One region obtains the new Temperature Distribution on coupling boundary, then is distributed the input as previous region using this, repeats above-mentioned meter
It calculates until convergence.The whole stable state Wen Sheng of GIS device and airtight distribution under heat effect has been calculated.
According to heat flow piercement simulation result, the optimization design experiment of heating power, the power setting of heating unit are established
For 2400,4800,7200,9600W, breaker uses two sets heating units, and current transformer is obtained using a set of heating unit
The Distribution of temperature rise of breaker, current transformer gas chamber different structure under different heating power, experimental result such as 3 and 4 institute of attached drawing
Show, horizontal axis heating module power is the power of heating layer in Fig. 3 and Fig. 4, and longitudinal axis stable state maximum temperature is used in heating layer
When corresponding heating power is heated in GIS device each component maximum temperature.For maximum lift gas chamber temperature and breaker,
Current transformer body equipment maximum temperature is no more than 60 DEG C, and the optimal heating power of the single heating unit of breaker is obtained from Fig. 3
7200W, heating layer are divided into three pieces of heating plates 1, every piece of 2400W, two groups of heating devices heats, since insulating layer is current transformer
Outermost one layer, so choosing current transformer insulating layer temperature is no more than 60 DEG C, from fig. 4, it can be seen that current transformer insulate
When layer temperature is no more than 60 DEG C, the optimal heating power 4800W of the single heating unit of current transformer, heating layer is divided into two pieces of heating
Plate 1, one group of heating devices heat, the same current transformer of disconnecting switch.
Heating layer uses the flexible module of arc, every piece of heating plate 1 width 800mm, thick 5mm, using silicon rubber in the present embodiment
Glue heating plate 1, every piece of heating power 2400W, rated voltage 220V, side 2 end of export power supply wiring.Thermal-insulation baffle plate 3 will heat
Plate 1 separates, and 3 length of thermal-insulation baffle plate is adjustable, and polylith heating plate 1 can be isolated respectively, so as to adjust GIS housing heated perimeters
And power.Under conditions of ensureing that maximum temperaturerise is no more than 60 DEG C of GIS device normal operating temperature, heating effect is consolidated through hot-fluid
Optimization is calculated in coupling Simulation, and specific result of calculation is as shown in Figure 3 and Figure 4.Analysis result obtains the optimal work(of breaker
Rate 7200W, under rated pressure 0.5MPa, gas chamber density of nitrogen highest 5.64kg/m3, minimum 4.51kg/m3, close to heated mould
Density of nitrogen near block is relatively low, and the density of nitrogen far from heating module is higher；Breaker body is under heating state due to dissipating
The limitation of heat condition, temperature rise highest, can reach 59.95 DEG C or so, greatly improve the micro- water of breaker body surfacing
It is precipitated.Current transformer, the optimal 4800W of disconnecting switch heating power, current transformer chamber volume is smaller, flow range compared with
Narrow, density of nitrogen is distributed highest 5.60kg/m3, minimum 5.46kg/m3, and airtight changes in distribution range is smaller；Current transformer gas
57.39 DEG C of room maximum temperature is insulation sides and secondary winding part, and minimum temperature is busbar part, substantially without Wen Sheng.
Heating plate 1 and thermal-insulation baffle plate 3 are wrapped up and fixed by thermal insulation board, it is ensured that and heating plate 1 does not generate displacement, thickness 10mm,
Width 800mm, it is therefore intended that reduce scattering and disappearing for heat, improve the heating effect of heating layer.
Fixed bed 5 is full wrap, and side is provided with guard plate apparatus, further heating layer and insulating layer 4 are protected,
Prevent rainwater, sundries from entering, 5 width 800mm of fixed bed, thickness 5mm, junction uses three screw fastening devices, fastens model
It encloses equipped with surplus, ensures that heating layer fits closely the heat insulation effect with insulating layer 4 with GIS housings.
The heating unit is versatile, and heating power is optimal, and heating effect is good, and energy consumption is relatively low, and the operation is stable, installation is torn open
It unloads conveniently, conducive to the expansion of GIS device site examining and repairing work.
Claims (5)
1. a kind of micro- water treatment heating device of general GIS gas chamber, which is characterized in that the device include heating layer, insulating layer (4) and
Fixed bed (5), heating layer fitting GIS device housing setting, heating layer draw power supply wiring (2) and connect power supply electricity
Source, the insulating layer (4) are wrapped in heating layer outer surface, and heating layer and insulating layer (4) are fixed on by the fixed bed (5)
On GIS device housing, the heating power of heating layer is configured to the GIS device internal part when being heated using the heating unit
Normal operating temperature be no more than setting value when maximum heating power；
The heating layer includes polylith heating plate (1) and thermal-insulation baffle plate (3), and the number of the heating plate (1) is according to heating
The heating power of layer is configured, and the heating plate (1) is evenly distributed on GIS device casing surroundings, adjacent two pieces of heating plates
(1) embedded thermal-insulation baffle plate (3) is isolated between, and every piece of heating plate (1) draws power supply wiring (2) and connects power supply.
2. a kind of micro- water treatment heating device of general GIS gas chamber according to claim 1, which is characterized in that described adds
Hot plate (1) and thermal-insulation baffle plate (3) are arcuation flexible material.
3. a kind of micro- water treatment heating device of general GIS gas chamber according to claim 1, which is characterized in that described consolidates
Given layer (5) be the adjustable hoop body structure of cylinder radius, fixed bed (5) lateral opening end by screw link closely component (6) carry out
It is fixed.
4. a kind of micro- water treatment heating device of general GIS gas chamber according to claim 1, which is characterized in that the device is also
Including control unit and execution unit, the control unit passes through the execution unit connection heating layer, the execution
Unit include control the device work whether relay, to heating unit carry out failure removal fuse and to heating unit
The timer of heating timing is carried out, and then the control unit includes power switch, relay start stop switch and heating time
Load button.
5. a kind of micro- water treatment heating device of general GIS gas chamber according to claim 1, which is characterized in that heating layer draws
The power supply of power supply wiring (2) connection gone out is the power supply in GIS operation cabinets.
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| CN201611123838.5A CN106786111B (en) | 2016-12-08 | 2016-12-08 | A kind of micro- water treatment heating device of general GIS gas chamber |
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| CN106786111B true CN106786111B (en) | 2018-07-03 |
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| CN109631330B (en) * | 2018-11-20 | 2024-03-15 | 广西电网有限责任公司电力科学研究院 | Mutual inductor heating heat preservation gasbag |
| CN110793196A (en) * | 2019-10-30 | 2020-02-14 | 广西电网有限责任公司电力科学研究院 | Heating device of current transformer |
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| CN105387342A (en) * | 2015-11-17 | 2016-03-09 | 国网新疆电力公司检修公司 | Treatment system for micro water of GIS air chamber |
| CN205353061U (en) * | 2016-02-04 | 2016-06-29 | 湖南工程学院 | A device that is arranged in little water content of short -term test GIS equipment |
| CN205681643U (en) * | 2016-06-16 | 2016-11-09 | 国网新疆电力公司检修公司 | The heater processing for 750 kilovolts of GIS air chamber excessive water content |
| CN205691995U (en) * | 2016-06-16 | 2016-11-16 | 国网新疆电力公司检修公司 | The composite control apparatus administered for 750 kilovolts of GIS air chamber excessive water content |
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2016
- 2016-12-08 CN CN201611123838.5A patent/CN106786111B/en active Active
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| JPH0222541A (en) * | 1988-07-11 | 1990-01-25 | Mitsubishi Electric Corp | Water detection sensor |
| CN105387342A (en) * | 2015-11-17 | 2016-03-09 | 国网新疆电力公司检修公司 | Treatment system for micro water of GIS air chamber |
| CN205353061U (en) * | 2016-02-04 | 2016-06-29 | 湖南工程学院 | A device that is arranged in little water content of short -term test GIS equipment |
| CN205681643U (en) * | 2016-06-16 | 2016-11-09 | 国网新疆电力公司检修公司 | The heater processing for 750 kilovolts of GIS air chamber excessive water content |
| CN205691995U (en) * | 2016-06-16 | 2016-11-16 | 国网新疆电力公司检修公司 | The composite control apparatus administered for 750 kilovolts of GIS air chamber excessive water content |
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