CN109461552A - Direct current equalizing resistance device - Google Patents
Direct current equalizing resistance device Download PDFInfo
- Publication number
- CN109461552A CN109461552A CN201811562541.8A CN201811562541A CN109461552A CN 109461552 A CN109461552 A CN 109461552A CN 201811562541 A CN201811562541 A CN 201811562541A CN 109461552 A CN109461552 A CN 109461552A
- Authority
- CN
- China
- Prior art keywords
- casing
- resistor assembly
- direct current
- expansion joint
- filler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000945 filler Substances 0.000 claims abstract description 20
- 239000004593 Epoxy Substances 0.000 claims description 6
- 239000004200 microcrystalline wax Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/028—Housing; Enclosing; Embedding; Filling the housing or enclosure the resistive element being embedded in insulation with outer enclosing sheath
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/16—Resistor networks not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
- H01C13/02—Structural combinations of resistors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Details Of Resistors (AREA)
Abstract
The present invention provides a kind of direct current equalizing resistance device, mainly thes improvement is that, including end cap, casing, resistor assembly, corrugated expansion joint, filler；The resistor assembly is arranged in casing, and filler is filled in casing；Filler has insulating properties；Corrugated expansion joint is separately installed at the both ends of resistor assembly；The both ends of casing are separately installed with end cap, and corrugated expansion joint and resistor assembly are sealed in casing；The end cap of the every one end of casing is connected with corresponding corrugated expansion joint；The both ends of resistor assembly are connect with the corrugated expansion joint of respective end or end cap respectively.The present invention has Standard resistance range wide, and specific power is big, moisture-proof, heat-resisting, high pressure resistant, the voltage of resistance to long-term work and the features such as electric pulse ability is strong in short-term.
Description
Technical field
The present invention relates to a kind of pressure resistor, specifically a kind of direct current equalizing resistance devices.
Background technique
With the development of economy, the electricity capacity of power grid increasingly increases.In terms of transmission technology, from the eighties in last century with
Come, the developing steps of power transmission technology are obviously accelerated, and the method for improving transmittability continues to bring out, existing direct current transportation skill
The new and high technologies such as art, flexible ac transmission technology, Fractional frequency technology, while also having the increasing to existing HVAC power transmission line
Hold renovation technique, such as boosting and transformation, lead capacity-increasing transformation again, transmission line of alternation current is changed to HVDC Transmission Technology.Direct current transportation, it is right
In the transmittability for improving existing Transmission system, existing equipment potentiality are excavated, is of great practical significance, implements
The effect got twice the result with half the effort can be received.When the high-voltage circuitbreaker separating brake of extra-high voltage, the fluctuation of fracture voltage becomes larger, very uneven
Surely.It is serious to generate phenomenon of arc discharge, the contact point for fracture of burning.And the scene of shoving of route can be generated, directly influence route
In measuring device safety.Therefore the series connection of DC bus high-speed switch in the line, needs to be resistant to specified 550kVdc direct current
Voltage, according to combined-voltage characteristic, selection is divided using resistors in parallel between DC bus high-speed switch fracture, this electricity
The main function of resistance device is exactly to play the role of partial pressure and press.Research and develop the difficult point that this resistor encounters: resistor is specified to its
Voltage, rated resistance, temperature-coefficient of electrical resistance, test voltage etc. have certain property to be strict with.The selection of external insulation casing pipe
It is also a great problem.Due to the elongated feature of product, to guarantee insulate creep distance, casing strength and weight demands.So set
Also a large amount of technology needs capture in pipe production.The sealing performance of this product also has strict requirements simultaneously, must not have any
Oil seepage phenomena.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of direct current equalizing resistance device, using full-closed structure,
It will not leak, have Standard resistance range wide, specific power is big, moisture-proof, heat-resisting, high pressure resistant, the voltage of resistance to long-term work and in short-term electric pulse
The features such as ability is strong.The technical solution adopted by the present invention is that:
A kind of direct current equalizing resistance device, mainly thes improvement is that, including end cap, casing, resistor assembly, bellow-type expansion
Device, filler；
The resistor assembly is arranged in casing, and filler is filled in casing；Filler has insulating properties；
Corrugated expansion joint is separately installed at the both ends of resistor assembly；The both ends of casing are separately installed with end cap, by bellows
Compensator and resistor assembly are sealed in casing；The end cap of the every one end of casing is connected with corresponding corrugated expansion joint；
The both ends of resistor assembly are connect with the corrugated expansion joint of respective end or end cap respectively.
Further, the filler is solid-state when environment temperature is no more than 50 DEG C.
Further, the filler is microwax.
Further, liner plate is equipped between the end of resistor assembly and corrugated expansion joint.
Further, resistor assembly includes several sections of resistance strings, connects to form resistor assembly by each resistance string；Each resistance string
Between liner plate is set.
Further, each resistance length direction in resistance string is arranged radially along casing, arranged in parallel, successively head and the tail phase
Even, it is formed and is connected in series.
Further, casing includes epoxy tube and the multiple full skirts for being set in epoxy tube outer ring；The multiple full skirt is certainly
Casing one end is distributed to the other end.
The present invention has the advantages that this direct current equalizing resistance device uses all-sealed structure, inside is filled with microwax conduct
Filler, moisture-proof is heat-resisting, high pressure resistant, and the voltage of resistance to long-term work and in short-term electric pulse ability are strong；Standard resistance range is wide, and specific power is big；
Structure is simple, and performance is stablized, convenient for installation and maintenance；To which the safety of stable DC bus high-speed switch is cut-off, guarantee that direct current is equal
The quality of piezoresistance device entirety makes DC bus high-speed switch safety, smoothly operation in power grid, makes customer satisfaction.
Detailed description of the invention
Fig. 1 is structure composition schematic diagram of the invention.
Fig. 2 is resistance string partial enlarged view of the invention.
Specific embodiment
Below with reference to specific drawings and examples, the invention will be further described.
As shown in Figure 1, direct current equalizing resistance device proposed by the present invention, including end cap 1, casing 2, resistor assembly 3, bellows
Compensator 4, liner plate 5, filler 6；
Described sleeve pipe 2 uses composite bushing, has many advantages, such as that intensity is high, light-weight, creepage distance is big；Casing 2 includes epoxy tube
201 and it is set in multiple full skirts 202 of 201 outer ring of epoxy tube；The multiple full skirt 202 is distributed from 2 one end of casing to the other end；
Full skirt 202 is made of silicon rubber, and insulation performance is good, is also capable of increasing the creepage distance of casing；
The resistor assembly 3 is arranged in casing 2, and filler 6 is filled in casing 2；Filler 6 uses microwax,
After being melted down in sprue bushing 2, it is at normal temperature solid-state, the single resistance in resistor assembly 3 can be wrapped；The fusing point of microwax
About 70 DEG C；This direct current equalizing resistance device in exhausted big portion the time be it is not energized, i.e., be not applied with voltage, at this time the equal piezoelectricity of direct current
Resistance device itself will not generate heat, and bulk temperature is 50 DEG C of environment temperature, and filler Witcodur 272 is solid-state, will not be leaked；It fills out
It is high pressure resistant to fill agent Witcodur 272, plays the role of insulation, heat dissipation, moisture-proof；
Corrugated expansion joint 4 is separately installed at the both ends of resistor assembly 3；The both ends of casing 2 are separately installed with end cap 1, by wave
Line pipe compensator 4 and resistor assembly 3 are entirely sealed in casing 2；The end cap 1 of the every one end of casing and corresponding corrugated expansion joint
4 are connected, and have equipotential；Even if microwax is fused into liquid, will not reveal,
The both ends of resistor assembly 3 are connect with the corrugated expansion joint of respective end 4 or end cap 1 respectively, in this example with bellow-type expansion
Device 4 is connected；Resistor assembly 3 can pass through wire connecting ends lid 1；Corrugated expansion joint uses corrugated stainless steel tubing, mainly makees
With the thermal expansion and contraction for being compensation filler 6；
More preferably, liner plate 5 is equipped between the end of resistor assembly 3 and corrugated expansion joint 4；Liner plate 5 can reduce compensation filling
The volume of agent 6；
In order to meet the needs of the elongated feature of direct current equalizing resistance device product, resistor assembly 3 may include two sections or more of electricity
Resistance string 301 forms resistor assembly 3 by the series connection of each resistance string 301；Liner plate 5 is set between each resistance string 301, prevents resistance string
Between there is unwanted short circuit, also reduce compensation filler 6 volume；
Each resistance length direction in resistance string 301 is arranged radially along casing 2, and arranged in parallel successively joins end to end, and forms series connection
Connection；The resistance string 301 of such structure, significantly improves pressure resistance, and greater number of resistance can be installed into casing and is gone here and there
Connection, each electric resistance partial pressure is low, and overall pressure resistance performance is improved；And greater number of resistance also increases power.
Claims (7)
1. a kind of direct current equalizing resistance device, which is characterized in that mended including end cap (1), casing (2), resistor assembly (3), bellows
Repay device (4), filler (6)；
The resistor assembly (3) is arranged in casing (2), and is filled with filler (6) in casing (2)；Filler (6) tool
There is insulating properties；
Corrugated expansion joint (4) are separately installed at the both ends of resistor assembly (3)；The both ends of casing (2) are separately installed with end cap
(1), corrugated expansion joint (4) and resistor assembly (3) are sealed in casing (2)；The end cap (1) of the every one end of casing with it is corresponding
Corrugated expansion joint (4) is connected；
The both ends of resistor assembly (3) are connect with the corrugated expansion joint of respective end (4) or end cap (1) respectively.
2. direct current equalizing resistance device as described in claim 1, which is characterized in that
The filler (6) is solid-state when environment temperature is no more than 50 DEG C.
3. direct current equalizing resistance device as claimed in claim 2, which is characterized in that
The filler (6) is microwax.
4. direct current equalizing resistance device as claimed in claim 1,2 or 3, which is characterized in that
Liner plate (5) are equipped between the end and corrugated expansion joint (4) of resistor assembly (3).
5. direct current equalizing resistance device as claimed in claim 1,2 or 3, which is characterized in that
Resistor assembly (3) includes several sections of resistance strings (301), forms resistor assembly (3) by each resistance string (301) series connection；Each electricity
Liner plate (5) are set between resistance string (301).
6. direct current equalizing resistance device as claimed in claim 5, which is characterized in that
Each resistance length direction in resistance string (301) is arranged radially along casing (2), and arranged in parallel successively joins end to end, and is formed
It is connected in series.
7. direct current equalizing resistance device as described in claim 1, which is characterized in that
Casing (2) includes epoxy tube (201) and the multiple full skirts (202) for being set in epoxy tube (201) outer ring；The multiple full skirt
(202) it is distributed from casing (2) one end to the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562541.8A CN109461552A (en) | 2018-12-20 | 2018-12-20 | Direct current equalizing resistance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811562541.8A CN109461552A (en) | 2018-12-20 | 2018-12-20 | Direct current equalizing resistance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109461552A true CN109461552A (en) | 2019-03-12 |
Family
ID=65613969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811562541.8A Pending CN109461552A (en) | 2018-12-20 | 2018-12-20 | Direct current equalizing resistance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109461552A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201503772U (en) * | 2009-09-22 | 2010-06-09 | 无锡市联达电器有限公司 | An anti-pollution circuit breaker capacitor |
| CN202084364U (en) * | 2011-02-22 | 2011-12-21 | 中国西电电气股份有限公司 | A non-linear resistor |
| CN203055583U (en) * | 2012-12-19 | 2013-07-10 | 上海吉泰电阻器有限公司 | Sleeve type high-voltage discharge circuit current-limiting resistor |
| CN104867672A (en) * | 2015-05-25 | 2015-08-26 | 四川省科学城久信科技有限公司 | Inflatable pulse capacitor |
| CN107393666A (en) * | 2017-06-05 | 2017-11-24 | 南阳中祥电力电子有限公司 | A kind of Split high pressure series compensation damps MOV |
| CN209199698U (en) * | 2018-12-20 | 2019-08-02 | 无锡市联达电器有限公司 | Direct current equalizing resistance device |
-
2018
- 2018-12-20 CN CN201811562541.8A patent/CN109461552A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201503772U (en) * | 2009-09-22 | 2010-06-09 | 无锡市联达电器有限公司 | An anti-pollution circuit breaker capacitor |
| CN202084364U (en) * | 2011-02-22 | 2011-12-21 | 中国西电电气股份有限公司 | A non-linear resistor |
| CN203055583U (en) * | 2012-12-19 | 2013-07-10 | 上海吉泰电阻器有限公司 | Sleeve type high-voltage discharge circuit current-limiting resistor |
| CN104867672A (en) * | 2015-05-25 | 2015-08-26 | 四川省科学城久信科技有限公司 | Inflatable pulse capacitor |
| CN107393666A (en) * | 2017-06-05 | 2017-11-24 | 南阳中祥电力电子有限公司 | A kind of Split high pressure series compensation damps MOV |
| CN209199698U (en) * | 2018-12-20 | 2019-08-02 | 无锡市联达电器有限公司 | Direct current equalizing resistance device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190312 |