CN104867675B - The integrated capacitor of capacitor core body insulation - Google Patents
The integrated capacitor of capacitor core body insulation Download PDFInfo
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- CN104867675B CN104867675B CN201410847445.3A CN201410847445A CN104867675B CN 104867675 B CN104867675 B CN 104867675B CN 201410847445 A CN201410847445 A CN 201410847445A CN 104867675 B CN104867675 B CN 104867675B
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- capacitor
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Abstract
The present invention provides a kind of integrated capacitor of capacitor core body insulation, including the metal frame of mutual insulating, capacitor unit, big case shell and sleeve pipe, it is characterised in that：Capacitor unit is on metal frame, insulated with insulated support between metal frame and metal frame and between big case shell, oil clearance is installed on two side metal parts of metal frame and separates insulating part, the oil clearance between core body and big case shell has been divided into heavy wool gap insulation layer；The connecting line of the capacitor unit at the positive back side of metal frame, using lead oil clearance separate insulating part be fixedly mounted on insulated wire, by the oil clearance between wire and big case shell be divided into heavy wool gap insulation layer, i.e., capacitor core body surrounding have heavy wool gap insulation layer.Oil clearance size can be reduced using integrated capacitor of the invention, reduction oil mass improves economic performance, and retains the unimpeded of oil circuit to greatest extent, improves the radiating efficiency of integrated capacitor so as to improve the operational reliability of integrated capacitor.
Description
Technical field
The invention belongs to power capacitor technical field, it is related to a kind of integrated capacitor, more particularly to a kind of capacitor core
The integrated capacitor of body insulation.
Background technology
Integrated capacitor is a capacitor product with China's independent intellectual property right, conventional integrated capacitor
It is that the capacitor unit being made up of segment element of singly connecting is assembled on a metal frame, by the external connection of capacitor unit
Constitute capacitor core body after line connection in series-parallel, loaded on the big case shell of aggregation type in, then by the sleeve pipe on lid on integrated capacitor by electricity
Pole is drawn, and a complete integrated capacitor is constituted after then filling insulating oil in the big case shell of aggregation type.But with
The development of capacitor technology, capacity of capacitor bank requirement is increasing, and this results in problem present in this technology increasingly
It is prominent, such as：
1）Mutually insulated cannot be completed between metal frame, capacitor explosion energy is difficult to physical isolation, capacitor
Capacity once making explosion energy exceeded greatly；
2）Voltage class is stepped up, and powered bare metal and connecting line etc. add with big shell spacing in causing capacitor core body
Greatly, the required insulation oil mass that is filled with also increases, and oil clearance between electrical body and shell is not dielectrically separated from, easily bridged by impurity and
Puncture, poor reliability；
3）Single string segment unit structure is unfavorable for reducing capacitor explosion energy using electrical wiring dividing method, unfavorable
In integrated capacitor safe operation.
Although unit therefor is many string segment structures in patent ZL201020519529.1, capacitor bank is also used mutually
Multiple framework modes of insulation, but because oversized, it is impossible among integrated capacitor.In patent
Though with integrated capacitor of the present invention using the framework mode of mutually insulated and many strings in ZL201020519529.1 pair
Segment unit structure is described, but insulation technology between bare conductor and shell is not described.Current voltol oil immersion set
Have in formula capacitor product carries out oil-gap separation using insulating paper or plate between electric device and shell, this oil-gap
Though segregation method makes the oil clearance between electric device and shell be separated into some small oil gaps by insulating paper or plate, and obtains insulating properties
To raising, but also cause the heating of electric device to be separated through the pathway that oil clearance passes to shell, make produced by electric device
Heat cannot spread out of, and be degrading the service condition of electric device, it is clear that in this technology oil clearance separate improve insulating properties with
It is afoul that electric device heat dispersion is ensured.Undoubtedly this contradiction is not solved, and to be improved the performance of integrated capacitor and is
It is impossible.
In view of this, it is necessary to a kind of integrated capacitor of capacitor core body insulation is provided, to solve the above problems.
The content of the invention
The purpose of the present invention is：The present invention be it is exceeded in order to solve high voltage large capcity integrated capacitor explosion energy,
Core body is excessive to shell oil clearance, and insulating properties are improved and contradict these three subject matters with core body radiating, so as to provide a kind of electric capacity
The integrated capacitor of device core body insulation.
To achieve the above object, the present invention is adopted the following technical scheme that：A kind of aggregation type electric capacity of capacitor core body insulation
Device, including the metal frame of mutual insulating, capacitor unit, big case shell and sleeve pipe, it is characterised in that：Capacitor unit is mounted in gold
On category framework, insulated with insulated support between metal frame and metal frame and between big case shell, metal frame
Oil clearance is installed on two side metal parts and separates insulating part, the oil clearance between core body and big case shell has been divided into heavy wool gap insulation
Layer；The connecting line of the capacitor unit at the positive back side of metal frame, separates insulating part and is fixedly mounted on insulation using lead oil clearance
On line, the oil clearance between wire and big case shell heavy wool gap insulation layer is divided into, i.e., capacitor core body surrounding there are many oil clearances exhausted
Edge layer.That thus brings has the technical effect that：The four side case inter-plate gaps for reaching capacitor core body with the big case shell of aggregation type are minimum,
Mounting process fit dimension is usually only necessary to, makes integrated capacitor smallest size of simultaneously, and ensure that to greatest extent
Oil circuit is unimpeded, it is ensured that while integrated capacitor is minimized, in turn ensure that the heat sinking function of integrated capacitor, makes set
Formula capacitor performance is ensured.
The integrated capacitor of capacitor core body insulation as described above, it is characterised in that：Using insulated bolt and insulation
Oil clearance partition ring, will be separated into multiple small oil gaps, and be fastened on metal frame for the insulating part of metal frame insulation.By
What this brought has the technical effect that：Ensure that oil circuit is unimpeded while improving the dielectric level of oil clearance between metal frame and big case shell again,
Reach between metal frame and big case shell it is smallest size of simultaneously, heat transfer radiating efficiency is improve again.
The integrated capacitor of capacitor core body insulation as described above, it is characterised in that use insulated bolt and insulation
Insulating part is divided into multiple oil clearances by oil clearance partition ring, and positions fastener and insulated bolt cooperation with wire, is fastened on electricity
On the connecting line of container unit.That thus brings has the technical effect that：Capacitor unit connecting line and sleeve pipe terminal are improved with set
Between formula capacitor big case shell while the dielectric level of oil clearance, ensured that oil circuit is unimpeded again, reached capacitor unit lead and
Between terminal and big case shell it is smallest size of simultaneously, heat transfer radiating efficiency is improve again.
The integrated capacitor of capacitor core body insulation as described above, it is characterised in that front and rear a, left side for capacitor core body
Right four sides is employed between heavy wool gap insulation, and capacitor framework, insulating supporting is used between capacitor framework and big case shell
Part is insulated and mechanical support, to complete capacitor framework between explosion energy separation.
The integrated capacitor of capacitor core body insulation as described above, it is characterised in that all of capacitor line is equal
Using the wire of tape insulation, the dielectric level of wire is consistent with integrated capacitor.
The present invention has the following advantages that compared with prior art：Oil clearance can be reduced using integrated capacitor of the invention
Size, reduction oil mass improves economic performance.The unimpeded of oil circuit is remained to greatest extent again simultaneously, makes capacitor unit
Heating can more effectively be transmitted to big case shell and shed, and improve the radiating efficiency of integrated capacitor so as to improve aggregation type
The operational reliability of capacitor.
In addition insulated support is employed, physical separation can be effectively carried out to capacitor explosion energy, coordinate wire
Electrical connecting wires carry out the segmentation of explosion energy, and the present invention can be made suitable for each voltage class and the integrated capacitor of capacity, have
Effect improves the security of integrated capacitor.
Brief description of the drawings
Fig. 1 is the structural representation of the integrated capacitor core body of the embodiment of the present invention.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the side view of Fig. 1.
Fig. 4 is the structural representation of the integrated capacitor of the embodiment of the present invention.
Fig. 5 is the fragmentary detail view that oil clearance separates insulating part 12.
Fig. 6 is the fragmentary detail view that sleeve pipe lead oil clearance separates insulating part 14.
Specific embodiment
For a better understanding of the present invention, it is with reference to the embodiment content that the present invention is furture elucidated but of the invention
Content is not limited solely to the following examples.Those skilled in the art can make various changes or modifications to the present invention, these
The equivalent form of value is same within the scope of claims listed by the application are limited.
Symbol description in accompanying drawing：1- capacitor units, 2- capacitor casings, 3- connecting wires, 4- Steel Structures, 5- insulation
Support member, 6- connecting lines, 7- connecting lines, the big case shells of 8-, 9- current potential connecting lines, the big sleeve pipes of 10-, 11- insulated bolts, 12- oil clearances
Separate insulating part, 13- insulating washers, 14- sleeve pipe leads oil clearance separates insulating part, 15- wires positioning fastener, 16- nuts.
As shown in Figure 1 to Figure 3, two electrodes of capacitor unit 1 are drawn by capacitor casing 2, and according to aggregation type electricity
The voltage and capacity requirement of container, point two rows are arranged on Steel Structure 4 side by side.Capacitor unit 1 is entered using connecting wire 3
Row connection in series-parallel connect, that is, constitute a core body framework, upper and lower framework is supported by insulated support 5, and complete each other and
Insulated with the potential isolation between case shell 8.On, be connected to intermediate potential on steel frame 4 by current potential connecting line 9 by lower framework.Collection
The head end of combined type capacitor is drawn by connecting line 6, and end is drawn by connecting line 7, and two leads are connected on two big sleeve pipes 10 respectively.
While to make the oil clearance between Steel Structure 4 and big case shell 8 as small as possible, and 1 caloric value of capacitor unit is not influenceed to pass through
Oil spreads and shed on big case shell 8.Extensive insulation screen is not provided between Steel Structure 4 and big case shell 8, and is utilized in two
Be arranged on insulating part 12 on Steel Structure 4 using insulated bolt 11 by side.Insulating part 12 is determined with insulating part 12 with insulating washer 13
Position, several small oil gaps are divided into by oil clearance, and are reached and avoided the oil clearance between Steel Structure 4 and big case shell 8 from being bridged and punctured by impurity, greatly
The big insulating properties and security reliability that improve oil clearance.It is connecting wire 3 and electric capacity in the front and back of capacitor core body
Device sleeve pipe 2, connecting wire 3 is presented " T " shape with capacitor casing 2, and 120 points of insulating part is not easy to install.For this present invention is used
Insulated bolt 11 is engaged with wire positioning fastener 15, positions fastener 15 by wire and insulated bolt 11 is fixed on connection
On wire 3, make insulating part 12 towards the big side of case shell 8, and complete the separation of the oil clearance between big case shell 8 and connecting wire 3.Due to exhausted
Position is in fixed relationship between edge part 12 and electrical body, as long as therefore the size of insulating part 12 is bigger i.e. compared with electrical body size is isolated
Can.General 35kV integrated capacitors 12 single side sizes of insulating part, 30 mm bigger than electrical body, the insulation of 66kV integrated capacitors
The single side size of part 12 50mm bigger than electrical body can play good segmentation oil clearance effect.Connecting line 6 and connecting line 7 are using exhausted
Edge wire, protection is completed by itself insulation.The top and the bottom of core body are supported using insulated support 5, constitute two even
The core body that multiple mutually insulated Steel Structures 4 are constituted.Insulated support 5 makes between Steel Structure 4, between Steel Structure 4 and big case shell 8
Mutually insulated, and each Steel Structure 4 is turned into a supporting body for explosion energy, reach and capacitor has been split using physical method
The effect of explosion energy.The complete capacitor core body of the present invention is so constituted, this core body is loaded into big case shell 8, sealing note
Oil constitutes a complete integrated capacitor.
As shown in figure 4,35kV, 66kV integrated capacitor agent structure are mutual using similar ZL201020519529.1
The Double tabletop structure of insulation, using segment structure is gone here and there element, 10kV integrated capacitors then use insulation against ground to capacitor unit more
Single platform structure.So the explosion energy no more than 15kJ of large value capacitor can be ensured in structure, and meet wanting for standard
Ask.
Fig. 5 is the fragmentary detail view that oil clearance separates insulating part 12.Fig. 6 is that sleeve pipe lead oil clearance separates the local detailed of insulating part 14
Figure.The oil clearance that both oil clearances separate insulating part separates number and the insulating board number of plies（Thickness）Determine by voltage class.Electricity
Pressure grade it is high increase insulation the oil clearance partition ring number of plies and the insulating board number of plies carry out reinforced insulation level, to meet dielectric strength
It is required that.
To improve the insulating properties of oil clearance between integrated capacitor core body and shell, while not causing capacitor core body again
Heating is shed difficulty, and reaches the purpose of the operation security and reliability for improving integrated capacitor, and the present invention is draped over one's shoulders using local
Hanging insulating method, makes the oil clearance between powered bare metal and shell, oil clearance can be divided between shell and the bare metal with different potentials
Several small oil gaps are divided into, the insulating properties of oil clearance are improved, and make the operational safety performance of integrated capacitor, reliability
While performance is greatly improved, make the oily flow path in capacitor core body between oil circuit and core body and shell unblocked again, and protect
Integrated capacitor core body institute caloric value has been demonstrate,proved to be radiated by shell in time.So both improved capacitor insulating properties it is same
When, the radiating of capacitor is in turn ensure that, reach the purpose for improving integrated capacitor operational safety performance and reliability.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (4)
1. metal frame, capacitor unit, the big case of a kind of integrated capacitor of capacitor core body insulation, including mutual insulating
Shell and sleeve pipe, multiple capacitor units carry out connection in series-parallel connection using connecting line, that is, constitute capacitor core body, it is characterised in that：
Capacitor unit is carried out on metal frame between metal frame and metal frame and with insulated support between big case shell
Insulation, is provided with oil clearance and separates insulating part, by between capacitor core body and big case shell on two side metal parts of metal frame
Oil clearance has been divided into heavy wool gap insulation layer；The connecting line of the capacitor unit at the positive back side of metal frame, using lead oil clearance point
Used outside insulated part is fixedly mounted on insulated wire, and the oil clearance between wire and big case shell has been divided into heavy wool gap insulation layer, i.e. electric capacity
Device core body surrounding has heavy wool gap insulation layer；Insulating part is divided into by multiple oil using insulated bolt and insulation oil clearance partition ring
Gap, and fastener and insulated bolt cooperation are positioned with wire, it is fastened on the connecting line of capacitor unit.
2. the integrated capacitor that capacitor core body according to claim 1 insulate, it is characterised in that：Using insulated bolt
With insulation oil clearance partition ring, multiple small oil gaps will be separated into for the insulating part of metal frame insulation, and be fastened on metal structure
On frame.
3. the integrated capacitor that capacitor core body according to claim 1 insulate, it is characterised in that capacitor core body
Front and rear, left and right four sides employs between heavy wool gap insulation, and capacitor framework, uses exhausted between capacitor framework and big case shell
Edge support member is insulated and mechanical support, to complete capacitor framework between explosion energy separation.
4. the integrated capacitor that capacitor core body according to claim 1 insulate, it is characterised in that all of capacitor
Line is using the wire of tape insulation, and the dielectric level of wire is consistent with integrated capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847445.3A CN104867675B (en) | 2014-12-31 | 2014-12-31 | The integrated capacitor of capacitor core body insulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410847445.3A CN104867675B (en) | 2014-12-31 | 2014-12-31 | The integrated capacitor of capacitor core body insulation |
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| Publication Number | Publication Date |
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| CN104867675A CN104867675A (en) | 2015-08-26 |
| CN104867675B true CN104867675B (en) | 2017-07-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107275087B (en) * | 2017-08-03 | 2019-06-07 | 无锡市电力滤波有限公司 | A kind of super high power three-level converter direct current capacitors |
| CN108511193B (en) * | 2018-01-31 | 2019-11-12 | 国网电力科学研究院武汉南瑞有限责任公司 | The modeling Baogang frame integrated capacitor and installation method of insulation crust junior unit |
| CN108511192B (en) * | 2018-01-31 | 2019-11-12 | 国网电力科学研究院武汉南瑞有限责任公司 | The all insulation frame integrated capacitor and installation method of insulation crust junior unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201812681U (en) * | 2010-09-07 | 2011-04-27 | 武汉电联电力电气技术有限公司 | High-reliability integrated capacitor |
| CN102610389A (en) * | 2011-12-20 | 2012-07-25 | 日新电机（无锡）有限公司 | Integrated capacitor bank with insulation support |
| CN204497062U (en) * | 2014-12-31 | 2015-07-22 | 刘瑞云 | The integrated capacitor of capacitor core body insulation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4338256B2 (en) * | 1999-04-12 | 2009-10-07 | ニチコン株式会社 | Dry metallized film capacitor |
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- 2014-12-31 CN CN201410847445.3A patent/CN104867675B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201812681U (en) * | 2010-09-07 | 2011-04-27 | 武汉电联电力电气技术有限公司 | High-reliability integrated capacitor |
| CN102610389A (en) * | 2011-12-20 | 2012-07-25 | 日新电机（无锡）有限公司 | Integrated capacitor bank with insulation support |
| CN204497062U (en) * | 2014-12-31 | 2015-07-22 | 刘瑞云 | The integrated capacitor of capacitor core body insulation |
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