CN101931239A - Box-type transformation unit comprising bus connecting devices - Google Patents
Box-type transformation unit comprising bus connecting devices Download PDFInfo
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- CN101931239A CN101931239A CN2009101728301A CN200910172830A CN101931239A CN 101931239 A CN101931239 A CN 101931239A CN 2009101728301 A CN2009101728301 A CN 2009101728301A CN 200910172830 A CN200910172830 A CN 200910172830A CN 101931239 A CN101931239 A CN 101931239A
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- bus
- box
- connecting devices
- bus connecting
- transformation unit
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Abstract
The invention provides a box-type transformation unit comprising bus connecting devices, which comprises a mounted ring main unit and a distribution transformer, and also comprises three bus connecting devices. Each bus connecting device comprises two bus insulators and a full insulating bus system; each bus insulator comprises an insulating cover and an electric contact; the insulating cover is barrel-shaped and the electric contact is cylindrical and sealed and fixed in the center of the insulating cover to penetrate the insulating cover; the central axis of the electric contact is overlapped with that of the insulating cover; the bottom of the electric contact is provided with a screw hole for mounting a bus; the full insulating bus system comprises two connectors and a busbar; the connectors are T-shaped and in a hollow barrel shape; the busbar comprises a conductive body and an insulating sheath; the insulating sheath is in a hollow round barrel shape; the conductive body is cylindrical and penetrates the insulating sheath; the central axis of the conductive body is overlapped with that of the insulating sheath; and the top of the electric contact is provided with a screw hole and is connected with the conductive body through a bolt. The box-type transformation unit has the advantages of compact structure and small occupied space; and the bus connecting devices are reliable and safe, and easy to install.
Description
Technical field
The invention belongs to electric power distribution technology field, particularly a kind of box-type transformation unit of bus connecting devices.
Background technology
The box-type transformation unit is a kind of important electric power dispensing device.
Existing box-type transformation unit contains ring main unit and distribution transformer.Three inputs are housed in the cabinet of ring main unit; three fuses; three overvoltages; overcurrent protector; three electric brakees and three buses; three porcelain insulators are housed on the cabinet; three inputs are connected with three phase lines of power transmission network by three core cables in three single-core cables or the three-core cable respectively; the electric energy of power transmission network divides three the tunnel to enter ring main unit by three inputs; every road contains fuse; overvoltage; overcurrent protector; each one of electric brake and bus, an end of three buses is connected with separately electric brake respectively, and the other end of three buses is connected with the conductor of separately porcelain insulator respectively.Distribution transformer contains frame, three buses, three inputs and three outputs, three porcelain insulators are housed on the frame, one end of three buses is connected with the conductor of separately porcelain insulator respectively, the other end of three buses is connected with separately input respectively, and three outputs, three core cables in three single-core cables or three-core cable respectively are connected with three phase lines of power distribution network.Conductor and the cable conductor of three porcelain insulators of distribution transformer between and three inputs of distribution transformer of ring main unit by being connected across its three porcelain insulators link together.Electric current from three phase lines output of power transmission network; three core cables in three cables or three-core cable flow into three inputs of ring main units respectively; three road electric currents are respectively through each self-corresponding fuse; overvoltage; overcurrent protector and electric brake; flow into an end of three buses; flow out through the other end of three buses and the conductor of three porcelain insulators again; then the cable between the conductor of three porcelain insulators of the conductor of three three porcelain insulators that are connected across ring main unit and distribution transformer respectively; the conductor of three porcelain insulators of distribution transformer and three buses flow into three inputs of distribution transformers, flow out through three outputs of distribution transformer respectively at last.
The above-mentioned cable that passes through has following shortcoming with the prior art that ring main unit and distribution transformer link together:
1, for realizing that ring main unit is connected with cable between the distribution transformer, need to consider the bending radius of cable installation and workmen's working space, this just requires must will reserve suitable spacing between ring main unit and distribution transformer, cause the box-type transformation set structure not compact, institute takes up space big, has limited the scope of application of this unit to a certain extent.
2, workmen's technical merit is uneven; and cable is connected with certain technical requirements; connect the step complexity of operation, regular meeting causes the connection between ring main unit and the distribution transformer unreliable because of human factor, causes unnecessary quality accident when causing the box-type transformation unit operation.
3, adopt cable to connect and cable end will occur exposing, this is the important safety hidden danger that influences the normal operation of electric equipment, and is not in place as safeguard procedures, exposes cable end and meets water, foreign material etc., all can cause device damage, even cause personal injury accident.As adopt insulating case to expose cable end and insulate in the external world, the one, difficulty of construction is big, efficient is low, the 2nd, reliability can not guarantee, the coupling part of cable end, and voltage is higher, under normal operation as connect imprecision, insulating case is easy to pitch, and loses insulation effect, even buries the hidden danger of fault.
Summary of the invention
Technical problem to be solved by this invention provides a kind of box-type transformation unit of bus connecting devices, need not to reserve the operating space between ring main unit and the distribution transformer, makes box-type transformation set structure compactness, the minimizing that takes up space; Connection between ring main unit and the distribution transformer is reliable and secure, and connection is simple and easy.
In order to address the above problem, technical scheme of the present invention is such:
A kind of box-type transformation unit of bus connecting devices, comprise ring main unit that three buses are housed and the distribution transformer that three buses are housed, it is characterized in that: also comprise three bus connecting devices, each bus connecting device connects a bus of ring main unit and a bus of distribution transformer; Described bus connecting device comprises two bus-bar insulators and an all insulation bus-bar system.
Described bus-bar insulator comprises insulating cover and electrical contact.
Described insulating cover is tubular; Described electrical contact is cylindrical, is locked in the center of insulating cover, runs through insulating cover, and the central shaft of electrical contact overlaps with the central shaft of insulating cover.
The bottom of described electrical contact is provided with the screw that bus is installed.
Described all insulation bus-bar system comprises two joints and a bus rod.
Described joint is " fourth " font, hollow tubular.
Described bus rod comprises electric conductor and insulating sleeve.
Described insulating sleeve is the open circles tubular; Described electric conductor is cylindrical, runs through insulating sleeve, and the central shaft of electric conductor overlaps with the central shaft of insulating sleeve.
Described electrical contact top is provided with screw, is connected by bolt with described electric conductor.
Described insulating cover is made of epoxy resin; Described electrical contact and electric conductor are made of copper; Described joint and insulating sleeve are made of silicon rubber.
During use, a bus on the ring main unit that plan links together is installed screw with bolt with the bus of the electrical contact of two bus-bar insulators by copper bar separately respectively with a bus on the distribution transformer and is connected, the electric conductor of the bus rod between two t-shaped connectors of all insulation bus-bar system is connected with the electrical contact of two bus-bar insulators respectively by double-screw bolt, and two current carrying bus link together by a bus-bar insulator, all insulation bus-bar system, another bus-bar insulator.
The box-type transformation unit of a kind of bus connecting devices of the present invention, ring main unit and distribution transformer are finished splicing by bus connecting device, need not slot milling between the two, make that box-type transformation set structure compactness is small and exquisite, and institute takes up space little; Ring main unit and distribution transformer splicing are simple and easy, and be low to workmen's technical merit requirement; In addition, ring main unit and distribution transformer are finished splicing by bus connecting device, do not have to expose cable end, and good insulation preformance makes electric power transfer not be subjected to the influence of external environment condition.
Description of drawings
Fig. 1 is the cutaway view of bus-bar insulator of the present invention;
Fig. 2 is the cutaway view of the t-shaped connector of all insulation bus-bar system of the present invention;
Fig. 3 is the cutaway view of the bus rod of all insulation bus-bar system of the present invention;
Fig. 4 is the cutaway view of all insulation bus-bar system of the present invention;
Fig. 5 is the connection diagram of two bus-bar insulators of the present invention and an all insulation bus-bar system;
Fig. 6 is the vertical view of the box-type transformation unit of bus connecting devices of the present invention;
Fig. 7 is the front view of the box-type transformation unit of bus connecting devices of the present invention.
Embodiment
In order to make technological means of the present invention, creation characteristic, to reach purpose and effect is easy to understand,, further set forth the present invention below in conjunction with concrete diagram.
As among Fig. 1 to 7, be used for the screw 11 that is connected with bus, insulating cover 12, be used for the screw 13 that is connected with electric conductor, electrical contact 14, electric conductor 31, electric conductor external part 311, electric conductor installing hole 312, insulating sleeve 32, bolt 51, bus rod 3, t-shaped connector 2, bus-bar insulator 1, ring main unit 4, distribution transformer 5.
The box-type transformation unit of a kind of bus connecting devices of the present invention, comprise ring main unit 4 and distribution transformer 5, also comprise three bus connecting devices, each bus connecting device connects a bus of ring main unit 4 and a bus of distribution transformer 5, and the structure of three bus connecting devices is identical.Described bus connecting device comprises two bus-bar insulators 1 and an all insulation bus-bar system, and the structure of two bus-bar insulators 1 is identical.
As shown in Figure 1, bus-bar insulator 1 comprises insulating cover 12 and electrical contact 14; Be provided with screw 11 in the bottom of bus-bar insulator 1, be connected with bus on ring main unit 4 or the distribution transformer 5 by bolt; Be provided with screw 13 at the top of bus-bar insulator 1, be connected with electric conductor 31 in the bus rod 3 by bolt 51.Insulating cover 12 is made of epoxy resin, is tubular, and 4 installing holes are evenly distributed on the cover mouth of insulating cover, and sealing has the inserts nut in each installing hole.Electrical contact is made of copper, and is cylindrical.Electrical contact is locked in the core of insulating cover, runs through insulating cover, and the central shaft of electrical contact overlaps with the central shaft of insulating cover.
As shown in Figure 4, all insulation bus-bar system of the present invention comprises two joints 2 and a bus rod 3.Insert respectively in two joints 2 at bus rod 3 two ends, makes two joints 2 wrap bus rod 3 two ends respectively, and the external part 311 of the electric conductor 31 in the bus rod 3 falls into the hollow area of joint 2.The exposed part of all insulation bus-bar system is electrically insulating silicone rubber.
As shown in Figure 2, described joint 2 is T-shaped, hollow tubular, constitute by silicon rubber, wherein, and the 21st, the capping of t-shaped connector 2, the 22nd, insulating plug, the 23rd, t-shaped connector main body.The material that constitutes insulating plug 22 is an epoxy resin, and insulating plug 22 is truncated cone-shaped, and the centre is provided with screwed hole, during installation insulating plug 22 is screwed in t-shaped connector main body 23, to guarantee the good insulation performance performance.The material that constitutes capping 21 is a silicon rubber, and it is hollow bowl-shape that capping is, and guarantees good seal, and play dustproof effect.
As shown in Figure 3, bus rod 3 comprises electric conductor 31 and insulating sleeve 32.Electric conductor 31 is cylindrical, and two ends have external part 311 respectively, has installing hole 312, and bolt 51 is connected electric conductor 31 by the installing hole 312 on the external part 311 of electric conductor 31 with electrical contact 14 in the bus-bar insulator 1.Insulating sleeve 32 is made of silicon rubber, is the open circles tubular, and it is cylindric that the inner space is.Electric conductor 31 is locked in the core of insulating sleeve 32, runs through insulating sleeve 32, and the central shaft of electric conductor 31 overlaps with the central shaft of insulating sleeve 32.
As shown in Figure 5, open the capping 21 of t-shaped connector 2, insulating plug 22 is screwed out t-shaped connector main body 23, the adapter body 23 that two joints 2 are inserted at the bus of all insulation bus-bar system rod 3 two ends respectively, two t-shaped connectors 2 are aimed at two bus-bar insulators 1 that are installed on ring main unit 4 and the distribution transformer 5 respectively, a whole set of all insulation bus-bar system is slowly advanced, until promoting.The electric conductor external part 311 of the bus rod 3 between the joint 2 of all insulation bus-bar system, the electrical contact 14 that is provided with screw 13 with the top of bus-bar insulator 1 is connected by bolt 51.Bolt 51 is finished after the connection, successively insulating plug 22 is screwed in t-shaped connector main body 23 again, and covers capping 21, has guaranteed the good insulation performance performance.
The box-type transformation unit of bus connecting devices of the present invention as shown in Figure 6, ring main unit 4 is connected by three bus connecting devices with distribution transformer 5.
Three inputs are installed, three fuses, three overvoltages, overcurrent protector, three electric brakees and three buses in the ring main unit 4.Three inputs are connected with three phase lines of power transmission network by three core cables in three single-core cables or the three-core cable respectively, and the electric energy of power transmission network divides three the tunnel to enter ring main unit 4 by three inputs.Every road contains fuse, overvoltage, overcurrent protector, and each one of electric brake and bus, an end of three buses is connected with separately electric brake respectively.
As shown in Figure 7, two bus-bar insulators 1 of a bus connecting device are installed in respectively on ring main unit 4 and the distribution transformer 5, and a bus on the ring main unit of intending linking together 4 is installed screw 11 with bolt with the bus of electrical contact 14 bottoms of two bus-bar insulators 1 by copper bar separately respectively with a bus on the distribution transformer 5 and is connected.The electric conductor 31 of the bus rod 3 between two t-shaped connectors 2 of all insulation bus-bar system is connected by bolt 51 with the electrical contact 14 of two bus-bar insulators 1.Two current carrying bus link together by a bus-bar insulator 1, all insulation bus-bar system, another bus-bar insulator 1.The ring main unit 4 of the box-type transformation unit of bus connecting devices of the present invention is connected by three identical bus connecting devices of structure with distribution transformer 5.
The box-type transformation unit of a kind of bus connecting devices of the present invention, ring main unit and distribution transformer are finished splicing by bus connecting device, need not slot milling between the two, make that box-type transformation set structure compactness is small and exquisite, and institute takes up space little; Ring main unit and distribution transformer splicing are simple and easy, and be low to workmen's technical merit requirement; In addition, ring main unit and distribution transformer are finished splicing by bus connecting device, do not have to expose cable end, and good insulation preformance makes electric power transfer not be subjected to the influence of external environment condition.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The protection range that the present invention requires is defined by appending claims and equivalent thereof.
Claims (14)
1. the box-type transformation unit of a bus connecting devices, comprise ring main unit that three buses are housed and the distribution transformer that three buses are housed, it is characterized in that: also comprise three bus connecting devices, each bus connecting device connects a bus of ring main unit and a bus of distribution transformer; Described bus connecting device comprises two bus-bar insulators and an all insulation bus-bar system.
2. the box-type transformation unit of a kind of bus connecting devices according to claim 1, it is characterized in that: described bus-bar insulator comprises insulating cover and electrical contact.
3. the box-type transformation unit of a kind of bus connecting devices according to claim 2, it is characterized in that: described insulating cover is tubular, and described electrical contact is cylindrical, is locked in the center of insulating cover, run through insulating cover, the central shaft of electrical contact overlaps with the central shaft of insulating cover.
4. according to the box-type transformation unit of a kind of bus connecting devices described in claim 2 or 3, it is characterized in that: the bottom of described electrical contact is provided with the screw that bus is installed.
5. according to the box-type transformation unit of a kind of bus connecting devices described in the claim 4, it is characterized in that: described all insulation bus-bar system comprises two joints and a bus rod.
6. the box-type transformation unit of a kind of bus connecting devices according to claim 5, it is characterized in that: described joint is " fourth " font, hollow tubular.
7. the box-type transformation unit of a kind of bus connecting devices according to claim 5, it is characterized in that: described bus rod comprises electric conductor and insulating sleeve.
8. the box-type transformation unit of a kind of bus connecting devices according to claim 7, it is characterized in that: described insulating sleeve is the open circles tubular; Described electric conductor is cylindrical, runs through insulating sleeve, and the central shaft of electric conductor overlaps with the central shaft of insulating sleeve.
9. the box-type transformation unit of a kind of bus connecting devices according to claim 7, it is characterized in that: described electrical contact top is provided with screw, is connected by bolt with described electric conductor.
10. the box-type transformation unit of a kind of bus connecting devices according to claim 2, it is characterized in that: described insulating cover is made of epoxy resin.
11. the box-type transformation unit of a kind of bus connecting devices according to claim 2 is characterized in that: described electrical contact is made of copper.
12. the box-type transformation unit of a kind of bus connecting devices according to claim 7 is characterized in that: described electric conductor is made of copper.
13. the box-type transformation unit of a kind of bus connecting devices according to claim 5 is characterized in that: described joint is made of silicon rubber.
14. the box-type transformation unit of a kind of bus connecting devices according to claim 7 is characterized in that: described insulating sleeve is made of silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101728301A CN101931239A (en) | 2009-06-18 | 2009-08-31 | Box-type transformation unit comprising bus connecting devices |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910053330 | 2009-06-18 | ||
| CN200910053330.6 | 2009-06-18 | ||
| CN2009101728301A CN101931239A (en) | 2009-06-18 | 2009-08-31 | Box-type transformation unit comprising bus connecting devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101931239A true CN101931239A (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101728301A Pending CN101931239A (en) | 2009-06-18 | 2009-08-31 | Box-type transformation unit comprising bus connecting devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101931239A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672402A (en) * | 2012-04-18 | 2012-09-19 | 昆山华恒焊接股份有限公司 | Swing arm welding position changing machine |
| CN102998487A (en) * | 2012-11-30 | 2013-03-27 | 天水长城开关厂有限公司 | Joint for insulation tests of gas-insulated switchboard |
| CN107482342A (en) * | 2017-09-12 | 2017-12-15 | 南京帝开电气自动化有限公司 | A kind of bus tie |
| CN112259326A (en) * | 2020-09-23 | 2021-01-22 | 西安唐盛电力科技有限公司 | Mounting and connecting assembly of bus post insulator of oil-immersed transformer |
-
2009
- 2009-08-31 CN CN2009101728301A patent/CN101931239A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672402A (en) * | 2012-04-18 | 2012-09-19 | 昆山华恒焊接股份有限公司 | Swing arm welding position changing machine |
| CN102998487A (en) * | 2012-11-30 | 2013-03-27 | 天水长城开关厂有限公司 | Joint for insulation tests of gas-insulated switchboard |
| CN107482342A (en) * | 2017-09-12 | 2017-12-15 | 南京帝开电气自动化有限公司 | A kind of bus tie |
| CN112259326A (en) * | 2020-09-23 | 2021-01-22 | 西安唐盛电力科技有限公司 | Mounting and connecting assembly of bus post insulator of oil-immersed transformer |
| CN112259326B (en) * | 2020-09-23 | 2024-01-26 | 西安唐盛电力科技有限公司 | Installation connection assembly of bus post insulator of oil immersed transformer |
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Application publication date: 20101229 |