CN103066500A

CN103066500A - Bus connecting method of solid insulating ring main unit

Info

Publication number: CN103066500A
Application number: CN2012105417233A
Authority: CN
Inventors: 王肇锋; 周振业; 侯峰; 刘蜀江
Original assignee: Beihai Galaxy Switch Devices Co Ltd
Current assignee: Beihai Galaxy Switch Devices Co Ltd
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2013-04-24
Anticipated expiration: 2032-12-14
Also published as: CN103066500B

Abstract

The invention discloses a bus connecting method of a solid insulating ring main unit. Steps of bus installing method of the solid insulating ring main unit are as follows. Flexible buses are respectively inserted into horizontal through holes of a long tee joint and a long four-communication; a copper connecting pipe is sleeved into the long tee joint and the long four-communication, and two-way long screws are inserted into the long tee joint and the long four-communication; the copper connecting pipe is twisted into a bus casing pipe; a insulating plug is twisted into an upper thread of the two-way long screws; sealing caps are covered, and a ground lead component is connected with a ground copper bar. Steps of bus demounting method of the solid insulating ring main unit are as follows. The sealing caps of the long tee joint and the long four-communication are opened, and the ground lead component is disconnected with the ground copper bar; the insulating plug is unscrewed; the two-way long screws of the long tee joint and the long four-communication are loosed from the bus casing pipe, and the two-way long screws are pulled out downward; the cupper connecting pipe and the two-way long screws are taken out; a fastening piece is taken away, and the flexible buses are taken out. Compared with the prior art, the bus connecting method of the solid insulating ring main unit solves the problems that buses of an existing solid insulating ring main unit are inconvenient to demount.

Description

The method for connecting bus of solid insulation ring main unit

Technical field

The present invention relates to the electric power system equipment for power transmission and distribution and make mounting technique field, especially a kind of method for connecting bus of solid insulation ring main unit.

Background technology

Current, in national power supply-distribution system, country widelys popularize the application of new forms of energy new technology, and wherein solid insulation ring main unit is exactly one of results new technology of State Grid Corporation of China's emphasis popularization.State Grid Corporation of China organizes China Electric Power Research Institute, Beijing Electric Power Corp., Shanghai Electric Power Co, Zhejiang Electric Power Company to issue company standard Q/GDW 730-2012 " 12kV solid insulation ring main unit technical conditions " and enforcement on March 2nd, 2012 for this reason.Solid insulation ring main unit is to adopt solid insulating material as the ring main unit of main insulation medium.With main conductive circuits such as vacuum interrupter and conduction connection, isolating switch, earthed switch, main bus bar, branch bars after the single or combination with solid dielectric insulation coat be encapsulated as that one or several has that certain function can again make up or expand possess all insulation, hermetic module, the palp Modular surface of people is coated with conduction or semiconductive shielding layer and the direct ring main unit of reliable ground.

It is to connect for the assembly cabinet between the solid insulation ring main unit that background appears in the method for connecting bus of solid insulation ring main unit.Because the solid insulation ring main unit time of occurrence is not long, therefore mostly the connection system of unit cabinet that exists at present is to adopt rigid busbar connection system, be exactly this type of design such as Chinese patent disclosed " a kind of connection system of unit cabinet of solid loop-net cabinet " (patent announcement number be CN202134797U, on 02 01st, 2012 day for announcing); This connection system of unit cabinet of solid loop-net cabinet is current to have application in many solid loop-net cabinet manufacturing enterprises, because the ring main unit cabinet of each producer is wide different with the bus spaced apart, be customized production, curved bus duct between the short-and-medium threeway of this patent and the short four-way and the straight edge line pipeline between long threeway and the long four-way are subjected to the cabinet size impact, need to make the mould of high precision, only have the correct effectively splicing of the less guarantee of cupboard cumulative errors when piecing together cabinet, otherwise just connect unreliable.This has just increased manufacturing cost and complexity and potential safety hazard has been installed, when the long threeway of this external dismounting and long four-way plug assembly, this design is to split out first long threeway and long four-way plug part, dismantle again the conduction tube connector that is connected with the ring main unit sleeve pipe, long threeway and long four-way plug assembly need be pulled out and be conducted electricity that the distance of tube connector is rear just can take out, this just needs more installing/dismounting space when changing at the scene the ring main unit connection system of unit cabinet, is unfavorable for the trend of ring main unit miniaturization.

Summary of the invention

The method for connecting bus that the purpose of this invention is to provide a kind of solid insulation ring main unit of easy operating.

In order to address the above problem, the technical solution used in the present invention is: the method for connecting bus of this solid insulation ring main unit, include the bus installation method of solid insulation ring main unit and the bus method for dismounting of solid insulation ring main unit, the bus installation method of described solid insulation ring main unit comprises the steps: step 11: the stress tube with the flexible bus two ends inserts respectively in the horizontal through hole of long threeway and long four-way first; Step 12: copper connecting tube is inserted in described long threeway and the described long four-way, the double end long bolt is passed plain cushion again, the bullet pad inserts the described copper connecting tube in described long threeway and the described long four-way, make the described long threeway of Kong Xinyu of bus terminal and the up and down through hole of described long four-way be in same shaft core position, must come the polishing difference in height by the configuration adjustment packing ring in the through hole of described long threeway; Step 13: the spiro tooth part that described copper connecting tube bottom is passed is connected with bus casing; Step 14: insulating plug is twisted in the upper thread of described double end long bolt; Step 15: sealing cap is covered, the grounding wire component on the ground loop that is connected to described flexible bus is directly connected on the grounding copper bar; The bus method for dismounting of described solid insulation ring main unit comprises the steps: step 21: the described sealing cap on described long threeway and the described long four-way is turned on, described grounding wire component and described grounding copper bar are disconnected; Step 22: turn on again described insulating plug; Step 23: first the described double end long bolt on described long threeway and the described long four-way is unscrewed from described bus casing, extracted downwards simultaneously together with described double end long bolt again; Step 24: described copper connecting tube and described double end long bolt, described adjusting washer (disk), described plain cushion and described bullet pad are taken out in the installation site of avoiding described bus casing; Step 25: can extract described flexible bus after the securing member of all fastening described flexible bus taken off.

Owing to adopted such scheme, the present invention compared with prior art has following beneficial effect:

1, the present invention has saved disassembly and assembly time effectively.

2, the present invention is simple and convenient, and is easy to implement.

Description of drawings

Fig. 1 is the main TV structure schematic diagram of the embodiment of the invention.

Fig. 2 is the decomposition explosion figure of the embodiment of the invention.

Description of reference numerals: 1, bus casing 2, double end long bolt 3, grounding wire component 4, long threeway 5, adjusting washer (disk) 6, plain cushion 7, bullet pad 8, copper connecting tube 9, insulating plug 10, sealing cap 11, flexible bus 12, long four-way 13, ground loop 14, stress tube 15, bus terminal.

Embodiment

Below in conjunction with the concrete accompanying drawing embodiment of the present invention the present invention is described in further detail.

The method for connecting bus of a kind of solid insulation ring main unit illustrated in figures 1 and 2, include the bus installation method of solid insulation ring main unit and the bus method for dismounting of solid insulation ring main unit, the bus installation method of described solid insulation ring main unit comprises the steps: step 11: the stress tube 14 at flexible bus 11 two ends is inserted respectively in the horizontal through hole of long threeway 4 and long four-way 12, make the long threeway 4 of Kong Xinyu of bus terminal 15 and the up and down through hole of long four-way 12 be in same shaft core position, must come the polishing difference in height by configuration adjustment packing ring 5 in long threeway 3 through holes; Step 12: copper connecting tube 8 is inserted in long threeway 4 and the long four-way 12, again double end long bolt 2 is passed the copper connecting tube 8 in plain cushion 6, the long threeway 4 of 7 insertions of bullet pad and the long four-way 12; Step 13: the M16 external screw teeth that copper connecting tube 8 bottoms are passed twists in the standard thread of bus casing 1 with the power rotation of 50NM; Step 14: the power of insulating plug 9 usefulness 30NM is twisted in the upper thread of double end long bolt 2; Step 15: sealing cap 10 is covered, the grounding wire component 3 on the ground loop 13 that is connected to flexible bus 11 is directly connected on the grounding copper bar.

The bus method for dismounting of described solid insulation ring main unit comprises the steps: step 21: the long threeway 4 that will install and the sealing cap 10 on the long four-way 12 are turned on, and grounding wire component 3 and grounding copper bar are disconnected; Step 22: turn on again insulating plug 9; Step 23: will grow on threeway 4 and the long four-way 12 double end long bolt 2 with instrument and from bus casing 1, unscrew, after having what long threeways 4 and long four-way 12 all must unscrew first double end long bolt 2 at this moment, extract downwards simultaneously together with double end long bolt 2 again, only need extract that distance gets final product about the 100mm of bus casing 1 this moment; Step 24: after long threeway 4 and long four-way 12 were extracted, the installation site of avoiding bus casing 1 went out copper connecting tube 8 and double end long bolt 2, adjusting washer (disk) 5, plain cushion 6, bullet pad 7 with regard to desirable; Step 25: can extract flexible bus 11 after the securing member of all fastening flexible bus 11 taken off.

Claims

1. the method for connecting bus of a solid insulation ring main unit includes the bus installation method of solid insulation ring main unit and the bus method for dismounting of solid insulation ring main unit, and it is characterized in that: the bus installation method of described solid insulation ring main unit comprises the steps:

Step 11: the stress tube with the flexible bus two ends inserts respectively in the horizontal through hole of long threeway and long four-way first;

Step 12: copper connecting tube is inserted in described long threeway and the described long four-way, the double end long bolt is passed plain cushion again, the bullet pad inserts the described copper connecting tube in described long threeway and the described long four-way, make the described long threeway of Kong Xinyu of bus terminal and the up and down through hole of described long four-way be in same shaft core position, must come the polishing difference in height by the configuration adjustment packing ring in the through hole of described long threeway;

Step 13: the spiro tooth part that described copper connecting tube bottom is passed is connected with bus casing;

Step 14: insulating plug is twisted in the upper thread of described double end long bolt;

Step 15: sealing cap is covered, the grounding wire component on the ground loop that is connected to described flexible bus is directly connected on the grounding copper bar;

The bus method for dismounting of described solid insulation ring main unit comprises the steps:

Step 21: the described sealing cap on described long threeway and the described long four-way is turned on, described grounding wire component and described grounding copper bar are disconnected;

Step 22: turn on again described insulating plug;

Step 23: first the described double end long bolt on described long threeway and the described long four-way is unscrewed from described bus casing, extracted downwards simultaneously together with described double end long bolt again;

Step 24: described copper connecting tube and described double end long bolt, described adjusting washer (disk), described plain cushion and described bullet pad are taken out in the installation site of avoiding described bus casing;

Step 25: can extract described flexible bus after the securing member of all fastening described flexible bus taken off.