CN100530480C - High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV - Google Patents
High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV Download PDFInfo
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- CN100530480C CN100530480C CNB2007100181238A CN200710018123A CN100530480C CN 100530480 C CN100530480 C CN 100530480C CN B2007100181238 A CNB2007100181238 A CN B2007100181238A CN 200710018123 A CN200710018123 A CN 200710018123A CN 100530480 C CN100530480 C CN 100530480C
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- pottery
- conductive rod
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- pole
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Abstract
This is a single break high voltage vacuum breaker of rated voltage at 252kv. The breaker is composed by three phrases; each of them is installed with vacuum explosion chamber pole which is vertical to the ground, and the two ends of the pole are connected to the premier and secondary radiator; a ceramic sleeve insulation pole is installed to the bottom of the secondary radiator and to the bottom of the pole fixed a operation device. By using the ceramic sleeve insulation pole, the traditional glass shell and insulation gas or liquid are saved. A heat tube is fixed in the static conducting rod. The static and moving contactors are single turn vertical magnetic field one or 2/3 turn vertical magnetic field one. The operation device is a permanent magnetic or spring or hydraulic spring operating one.
Description
Technical field
The present invention relates to a kind of high-pressure vacuum breaker, particularly a kind of single break rated voltage is to the high-pressure vacuum breaker of 252kV.
Background technology
Current in 72.5kV and above high pressure and extra high voltage circuit breaker SF
6Circuit breaker is a main product.SF
6Gas is the strongest a kind of in six kinds of greenhouse gases of Kyoto Protocol appointment, and its greenhouse effects of the earth coefficient is CO
223900 times, the life-span reaches 3200 in its atmosphere.Vacuum circuit-breaker has environmental friendliness, the product reliability height, and maintenance workload is little, no fire explosion danger, product technology performance advantages of higher is a main product in middle pressure grade at present.The rated voltage of single break vacuum circuit-breaker is up to 145kV in the world.The development high-pressure vacuum breaker is to reduce SF
6A kind of good selection of discharging.
In the patented technology of existing 72.5kV to 252kV high pressure vacuum circuit breaker, adopt the shell of glass as vacuum interrupter, use gas such as SF then
6, compressed air, N
2, or liquid such as silicone oil or β oil is isolated in the insulator the inside as the external insulation of vacuum interrupter with external insulation gas or liquid seal, and promptly the vacuum extinction chamber enclosure is two parts with outer insulator.
Summary of the invention
The objective of the invention is to, the high-pressure vacuum breaker of a kind of novel single break electric pressure to 252kV proposed, this high-pressure vacuum breaker adopts the vacuum interrupter pole that has outer ceramic shirt rim as the shell of vacuum interrupter and the outer insulator of vacuum interrupter pole, saved original outer insulator and external insulation gas or liquid, the vacuum extinction chamber enclosure that belongs to two parts that is about in original technology unites two into one with outer insulator.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of single break rated voltage is to the high-pressure vacuum breaker of 252kV, this primary cut-out is by three phase compositions, each is provided with a vacuum interrupter pole mutually, it is characterized in that, described vacuum interrupter pole and ground are and are arranged vertically, the two ends of vacuum interrupter pole are respectively arranged with first radiator and second radiator, are provided with the insulator insulation column below second radiator, are furnished with operating mechanism below the insulator insulation column.
Described operating mechanism adopts permanent-magnet manipulating mechanism, spring operating mechanism or hydraulic pressure spring operating mechanism, and this operating mechanism uses jointly for the primary cut-out three-phase, and perhaps the primary cut-out three-phase respectively uses an operating mechanism.
Described vacuum interrupter pole is made up of shell on the pottery and ceramic lower casing, and shell and ceramic lower casing are linked together by flange on the pottery, all has ceramic shirt rim on shell and the ceramic lower casing on the pottery, ceramic upper and lower shell double as insulation column;
Upper flange is arranged on the shell on the pottery, upper connecting terminal is arranged on the upper flange, the center of upper flange is provided with conducting ring;
On the pottery lower casing lower flange is arranged, lower connecting terminal is installed on the lower flange, there is insulated tension pole at the lower flange center; Be with touch spring and fairlead on the insulated tension pole, fairlead is embedded in the conductive supporting;
Be separately installed with main shield cover, first end radome, the second end radome on the pottery in the cavity of shell; Be provided with static conductive rod between main shield cover and the first end radome, last conducting ring is arranged on the static conductive rod, be furnished with heat pipe in the static conductive rod, around the static conductive rod quiet end bellows is arranged, quiet end bellows is positioned at the first end radome; Be provided with moving conductive rod between main shield cover and the second end radome, following conducting ring is arranged on the moving conductive rod; The moved end bellows is arranged around the moving conductive rod; In the main shield cover, fixed contact and moving contact are arranged respectively on static conductive rod and the moving conductive rod.
Described vacuum interrupter pole is made up of shell on the pottery and ceramic lower casing, and shell and ceramic lower casing are linked together by flange on the pottery, all has ceramic shirt rim on shell and the ceramic lower casing on the pottery, ceramic upper and lower shell double as insulation column;
Upper flange is arranged on the shell on the pottery, upper connecting terminal is arranged on the upper flange, above upper flange, connect first radiator; The center of upper flange is provided with conducting ring;
On the pottery lower casing lower flange is arranged, lower flange connects second radiator; Lower connecting terminal is installed on the lower flange, and there is insulated tension pole at the lower flange center; Be with touch spring and fairlead on the insulated tension pole, fairlead is embedded in the conductive supporting; In the space between pottery lower casing and the conductive supporting iknsulating liquid or insulating gas are arranged;
The cavity of shell is a vacuum on the pottery, is separately installed with main shield cover, first end radome, the second end radome in the cavity; Be provided with static conductive rod between main shield cover and the first end radome, last conducting ring is arranged on the static conductive rod, be furnished with heat pipe in the static conductive rod, around the static conductive rod quiet end bellows is arranged, quiet end bellows is positioned at the first end radome; Be provided with moving conductive rod between main shield cover and the second end radome, following conducting ring is arranged on the moving conductive rod; The moved end bellows is arranged around the moving conductive rod; In the main shield cover, fixed contact and moving contact are arranged respectively on static conductive rod and the moving conductive rod.
Quiet end bellows plays cushioning effect to vacuum circuit-breaker when closing a floodgate, make vacuum interrupter gas leakage to prevent excessive combined floodgate impulsive force.
Described insulator insulation column includes insulated porcelain sleeve, and bellows is arranged in the insulated porcelain sleeve, and bellows connects the insulated tension pole that penetrates in the insulated porcelain sleeve, and insulated tension pole is connected by flange with ceramic setting of casing, and insulating gas or iknsulating liquid are arranged in the insulator insulation column; The insulated porcelain sleeve of insulator insulation column is connected by flange with institutional framework.
The separating brake of vacuum circuit-breaker and combined floodgate are finished by operating mechanism.Operating mechanism can use an operating mechanism by three-phase, also can respectively use an operating mechanism by three-phase.Operating mechanism can be spring operating mechanism, permanent-magnet manipulating mechanism or hydraulic pressure spring operating mechanism.Operating mechanism is connected with institutional framework.
Fixed contact and moving contact use vertical magnetic contact of single turn or 2/3rds turn type longitudinal magnetic field contacts.
Meaning of the present invention is that the insulation of high tension vacuum arc-extinguishing chamber is owing to the restriction that is subjected to glass shell can not be done very greatly, and make vacuum interrupter on radial and axial, can enlarge behind the employing ceramic package, wherein can reach the size of the outer insulator of original vacuum circuit-breaker diametrically, the interior insulating Design that this just helps vacuum interrupter greatly makes electric field strength reduce greatly.Because insulator can be provided with outer skirt and use as external insulation, saved original gas or liquid and used in addition as external insulation.Therefore the present invention has also saved the cost of glass shell and external insulation in the interior insulation and external insulation of simplifying vacuum interrupter.
Description of drawings
Fig. 1 is for using the high pressure vacuum circuit breaker figure of novel single-fracture voltage to 252kV; Each symbol is among the figure: 1, ceramic package vacuum interrupter pole, 2, first radiator, 3, second radiator, 4, the insulator insulation column, 5, operating mechanism.
Fig. 2 is ceramic package vacuum interrupter pole figure; Symbol is among the figure: 101, shell on the pottery, 102, static conductive rod, 103, moving conductive rod, 104, quiet end bellows, 105, go up conducting ring, 106, upper flange, 107, upper connecting terminal, 108, moved end bellows, 109, following conducting ring, 110, fixed contact, 111, moving contact, 112, main shield cover, 113, the first end radome, 114, the second end radome, 115, ceramic lower casing, 116, flange, 117, conductive supporting, 118, touch spring, 119, fairlead, 120, lower flange, 121, lower connecting terminal, 122, insulated tension pole.
Fig. 3 is 2/3rds turn longitudinal field contact figure; Symbol is among the figure: 21, cylindrical conductor, 22, support arm, 23, go up arc-shaped conductor, 24, the arc lower conductor, 25, contact blade, 26 first slits, 27, second slit, the 28, the 3rd slit.
Fig. 4 is the single-turn type longitudinal field contact; Symbol is among the figure: 31, conducting rod, 32, coil, 33, first contact blade, 34, second contact blade, 35, coil, 36, conducting rod.
Fig. 5 is an insulator insulation column structure chart; Symbol is among the figure: 400, insulated porcelain sleeve, 401, bellows, 402, iknsulating liquid, 403, institutional framework.
The present invention is described in further detail below in conjunction with 126kV single break vacuum circuit-breaker specific embodiment that accompanying drawing and inventor provide.
Embodiment
126kV single break high-pressure vacuum breaker of the present invention as shown in Figure 1.By 3 phase compositions, each all has a vacuum interrupter pole 1 mutually.Vacuum interrupter pole 1 total height is 1400mm, is with ground to be arranged vertically.Be provided with first radiator 2 above the vacuum interrupter pole 1, be provided with second radiator 3 below the vacuum interrupter pole 1; Below vacuum interrupter pole 1, be provided with insulator insulation column 4; Be furnished with operating mechanism 5 below each insulator insulation column 4, operating mechanism 5 is can three-phase shared; Operating mechanism 5 can adopt permanent-magnet manipulating mechanism, spring operating mechanism or hydraulic pressure spring operating mechanism.Operating mechanism is finished the divide-shut brake requirement according to the divide-shut brake characteristic curve, and matches with the vacuum arc characteristic and to satisfy the requirement that short circuit current cut-offs.When carrying out simultaneous operation, when the 126kV vacuum circuit-breaker cut-off the 40kA short circuit current, the moving contact opening velocity should be before current over-zero reaches 3.5m/s during 0.5ms.
The structure of vacuum interrupter pole 1 as shown in Figure 2.Vacuum interrupter pole 1 is made up of shell on the pottery 101 and ceramic lower casing 115, shell 101 and ceramic lower casing 115 are linked together by flange 116 on the pottery, all have ceramic shirt rim on shell 101 and the ceramic lower casing 115 on the pottery, to satisfy the creepage distance requirement, shell 101 is made by the high-strength alumina material on the pottery, ceramic upper and lower shell 101,115 double as insulation columns;
On the pottery lower casing 115 lower flange 120 is arranged, lower flange 120 connects second radiator 3; Lower connecting terminal 121 is installed on the lower flange 120, and there is insulated tension pole 122 at lower flange 120 centers; Be with touch spring 118 and fairlead 119 on the insulated tension pole 122, fairlead 119 is embedded in the conductive supporting 117; In the space between pottery lower casing 115 and the conductive supporting 117 iknsulating liquid or insulating gas are arranged;
The cavity of shell 101 is a vacuum on the pottery, is separately installed with main shield cover 112, first end radome 113, the second end radome 114 in the cavity; Be provided with static conductive rod 102 between main shield cover 112 and the first end radome 113, last conducting ring 105 is arranged on the static conductive rod 102, be furnished with heat pipe in the static conductive rod 102, around the static conductive rod 102 quiet end bellows 104 arranged, quiet end bellows 104 is positioned at first end radome 113; Be provided with moving conductive rod 103 between main shield cover 112 and the second end radome 114, following conducting ring 109 is arranged on the moving conductive rod 103; Moved end bellows 108 is arranged around the moving conductive rod 103; In main shield cover 112, fixed contact 110 and moving contact 111 are arranged respectively on static conductive rod 102 and the moving conductive rod 103.
The height of shell 101 is 1000mm on the pottery, and the inside cavity vacuum degree of shell 101 is 10 on the pottery
-4Pa or condition of high vacuum degree more;
Arrange heat pipe in the static conductive rod 101, can improve equivalent thermal conductivity, so heat pipe cooperates with radiator to increase the rated current ducting capacity of vacuum circuit-breaker.
104 pairs of vacuum circuit-breakers of quiet end bellows play cushioning effect when closing a floodgate, make vacuum interrupter gas leakage to prevent excessive combined floodgate impulsive force.
Fixed contact 110 all is provided with grading ring with the back side of moving contact 111, is used for preventing the puncture between contact and the main shield cover 112.
The height of pottery lower casing 115 is 400mm.
The purpose of touch spring 118 is to make moving contact 111 and fixed contact 110 have enough pressure after reaching final make position, guarantees that temperature rise is no more than rated value, can test by dynamic and thermal stability, and guarantee enough just-off speeds etc.Axiality when fairlead 119 guarantees the moving contact motion.Pottery lower casing 115 is pillars of conductive supporting 117, touch spring 118 and fairlead 119.
Referring to Fig. 5, insulator insulation column 4 includes insulated porcelain sleeve 400, bellows 401 is arranged in the insulated porcelain sleeve 400, bellows 401 connects the insulated tension pole 122 that penetrates in the insulated porcelain sleeve 400, insulated tension pole 122 is connected by flange 120 with ceramic lower casing 115, and iknsulating liquid 402 (as silicone oil or β oil) is arranged in the insulator insulation column 4; The insulated porcelain sleeve 400 of insulator insulation column 4 and institutional framework 403 are connected by flange.
When adopting spring operating mechanism, the shared operating mechanism of three-phase.When adopting permanent-magnet manipulating mechanism or hydraulic pressure spring operating mechanism, whenever be equipped with an operating mechanism mutually, three-phase is provided with three operating mechanisms altogether.
The fixed contact 110 and the moving contact 111 of 126kV vacuum extinction chamber can adopt 2/3rds turn type longitudinal magnetic field contacts, as shown in Figure 3.When the rated short circuit current connecting-disconnecting function was 40kA, the contact diameter was 100mm, and clearance between open contacts is 60mm, and contact is made of conductor material (oxygen-free copper), and contact material is CuCr50.The design feature of contact is for having a cylindrical conductor 21 in the middle of contact, the support arm 22 that cylindrical conductor 21 is identical with three shapes links to each other, each support arm 22 links to each other with an arc-shaped conductor 23, the angle of arc-shaped conductor 23 correspondences is about 120 °, each arc-shaped conductor 23 is connected with another another arc-shaped conductor 24 identical with arc-shaped conductor 23 shapes at the back side, and the angle of arc-shaped conductor 24 correspondences also is about 120 °.Arc-shaped conductor 24 links together with contact blade 25.
Electric current I is flowed into by cylindrical conductor 21, is divided into three parts and enters in the support arm 22, and each support arm electric current is about I/3.Electric current I in the support arm 22/3 flows in the arc-shaped conductors 23, and then flows in the arc-shaped conductor 24, and this electric current was entered in the contact blade 25 by being connected between arc-shaped conductor 24 and the contact blade 25 at last.In order to guarantee electric current path flow according to the rules, be provided with some slits, as the slit among the figure 26,27,28, some mechanical support can be set in the slit to guarantee mechanical strength.
2/3rds turn longitudinal field contacts are compared with prior art 1/3rd turn longitudinal field contacts, be to have increased arc-shaped conductor 24, make electric current walk 2/3rds circumference in arc-shaped conductor, walking 1/3rd circumference than prior art has increased current path, thereby has strengthened longitudinal magnetic field.
Fixed contact of 126kV vacuum extinction chamber (110) and moving contact (111) can adopt the single-turn type longitudinal field contact described in applicant's the utility model patent (patent No. zl 200420086276.8), as shown in Figure 4.When the rated short circuit current connecting-disconnecting function was 40kA, the contact diameter was 100mm, and clearance between open contacts is 60mm, and contact is made of conductor material (oxygen-free copper), and contact material is CuCr50.
Claims (4)
1. a single break rated voltage is to the high-pressure vacuum breaker of 252kV, this primary cut-out is by three phase compositions, each is equipped with vacuum interrupter pole (1) mutually, vacuum interrupter pole (1) and ground are and are arranged vertically, the two ends of vacuum interrupter pole (1) are respectively arranged with first radiator (2) and second radiator (3), be provided with insulator insulation column (4) below second radiator (3), is furnished with operating mechanism (5) below the insulator insulation column (4), it is characterized in that: described vacuum interrupter pole (1) is made up of shell on the pottery (101) and ceramic lower casing (115), shell on the pottery (101) and ceramic lower casing (115) are linked together by flange (116), all have ceramic shirt rim on shell on the pottery (101) and the ceramic lower casing (115), on the pottery, lower casing (101,115) double as insulation column;
Upper flange (106) is arranged on the shell on the pottery (101), upper connecting terminal (107) is arranged on the upper flange (106), the top in upper flange (107) connects first radiator (2); The center of upper flange (106) is provided with conducting ring (105);
On the pottery lower casing (115) lower flange (120) is arranged, lower flange (120) connects second radiator (3); Lower connecting terminal (121) is installed on the lower flange (120), and there is insulated tension pole (122) at lower flange (120) center; Be with touch spring (118) and fairlead (119) on the insulated tension pole (122), fairlead (119) is embedded in the conductive supporting (117); In the space between pottery lower casing (115) and the conductive supporting (117) iknsulating liquid or insulating gas are arranged;
The cavity of shell on the pottery (101) is a vacuum, is separately installed with main shield cover (112), first end radome (113), the second end radome (114) in the cavity; Be provided with static conductive rod (102) between main shield cover (112) and the first end radome (113), last conducting ring (105) is arranged on the static conductive rod (102), static conductive rod is furnished with heat pipe in (102), static conductive rod (102) has quiet end bellows (104) on every side, and quiet end bellows (104) is positioned at first end radome (113); Be provided with moving conductive rod (103) between main shield cover (112) and the second end radome (114), following conducting ring (109) is arranged on the moving conductive rod (103); Moving conductive rod (103) has moved end bellows (108) on every side; In main shield cover (112), fixed contact (110) and moving contact (111) are arranged respectively on static conductive rod (102) and the moving conductive rod (103).
2. single break rated voltage as claimed in claim 1 is to the high-pressure vacuum breaker of 252kV, it is characterized in that, described insulator insulation column (4) includes insulated porcelain sleeve (400), bellows (401) is arranged in the insulated porcelain sleeve (400), bellows (401) connects the insulated tension pole (122) that penetrates in the insulated porcelain sleeve (400), insulated tension pole (122) is connected by flange (120) with ceramic lower casing (115), and insulating gas or iknsulating liquid (402) are arranged in the insulator insulation column (4); The insulated porcelain sleeve (400) of insulator insulation column (4) is connected by flange with institutional framework (403).
3. single break rated voltage as claimed in claim 1 is to the high-pressure vacuum breaker of 252kV, it is characterized in that, described operating mechanism (5) adopts permanent-magnet manipulating mechanism, spring operating mechanism or hydraulic pressure spring operating mechanism, each uses an operating mechanism (5) mutually the three-phase of high-pressure vacuum breaker, perhaps the common operating mechanism (5) that uses of the three-phase of high-pressure vacuum breaker.
4. single break rated voltage as claimed in claim 1 is characterized in that to the high-pressure vacuum breaker of 252kV described fixed contact (110) and moving contact (111) use vertical magnetic contact of single turn or 2/3rds turn type longitudinal magnetic field contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100181238A CN100530480C (en) | 2007-06-26 | 2007-06-26 | High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100181238A CN100530480C (en) | 2007-06-26 | 2007-06-26 | High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101075509A CN101075509A (en) | 2007-11-21 |
| CN100530480C true CN100530480C (en) | 2009-08-19 |
Family
ID=38976461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100181238A Expired - Fee Related CN100530480C (en) | 2007-06-26 | 2007-06-26 | High-voltage vacuum circuit breaker with mono-fracture voltage to 252kV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100530480C (en) |
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-
2007
- 2007-06-26 CN CNB2007100181238A patent/CN100530480C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101075509A (en) | 2007-11-21 |
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Granted publication date: 20090819 Termination date: 20200626 |