CN202172243U

CN202172243U - 35KV medium voltage full-pouring type bus duct

Info

Publication number: CN202172243U
Application number: CN2011202908200U
Authority: CN
Inventors: 陈成国; 沈文瑛
Original assignee: 沈文瑛
Current assignee: Jiangsu Basiwei Energy Saving Technology Co., Ltd.
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2012-03-21
Anticipated expiration: 2021-08-11

Abstract

The utility model relates to a full-pouring type bus duct, especially to a 35KV medium voltage full-pouring type bus duct, characterized by comprising an insulating matrix and a plurality of metal conductors. The metal conductors are mostly wrapped by the insulating matrix, the two tail ends of the metal conductors are exposed, a snake tube type insulator between the two tail ends of the metal conductors and the insulating matrix is considered as a transition section, and predetermined intervals are kept between the metal conductors; wherein, the insulating matrix between the adjacent metal conductors is equipped with rectangular heat radiation through holes which are arranged in an interval manner along with the insulating matrix between the adjacent metal conductors, open inward concave holes are formed between the end parts of adjacent metal conductors, and the rectangular through holes are arranged in a single-row interval manner along with the insulating matrix between the adjacent metal conductors. The bus duct of the utility model possesses a good heat radiation performance, a high insulating performance, a high protection level and a better energy-saving effect, the mechanical strength of the bus duct also achieves requirements, and the 35KV medium voltage full-pouring type bus duct is suitable for the power transmission of a medium voltage power system.

Description

Press full cast-type bus duct among the 35kV

Technical field

The utility model relates to a kind of full cast-type bus duct, relates in particular to and presses full cast-type bus duct among a kind of 35kV.

Background technology

Chinese patent 03229024.1 discloses a kind of totally-enclosed compound resin pouring bus groove; Comprise bare bus bar and compound resin body; Every bare bus bar is separated by the compound resin body between bare bus bar and bare bus bar by compound resin body parcel, and many bare bus bars are solidified into an integral body by the compound resin body.

Totally-enclosed compound resin pouring bus groove since bare bus bar between certain interval is arranged and is full of the compound resin body, even so bare bus bar have burr also can not produce phase fault, more can not produce stack effect; Because bus duct leans on compound resin body heat loss through conduction, so heat dispersion is better than double insulation bus duct.Bus duct also can be used for wet environment, even works in the water.Because bare bus bar is all by compound resin parcel, so bus duct has good impact resistance, not only can save metal shell, also can in corrosive environment, use.Because pouring bus groove adopts the compound resin body parcel bare bus bar with good radiating effect, special process, the heat dispersion of bus duct is better than direct air radiating effect.

Summary of the invention

The purpose of the utility model is to provide presses full cast-type bus duct among a kind of 35kV; This bus duct is employed in to open to loose on the insulation parent holds the hole; Between metallic conductor two ends and insulation parent, the coiler-type insulator is arranged as changeover portion; This bus duct perfect heat-dissipating is applicable to the electric power transfer in the intermediate voltage electric power system.

To achieve these goals, the utility model adopts following technical scheme:

Press full cast-type bus duct among a kind of 35kV; Comprise an insulation parent and several metallic conductors; Said metallic conductor major part is insulated parent and coats, and metallic conductor two is terminal exposed, between metallic conductor two ends and insulation parent, the coiler-type insulator is arranged as changeover portion; And the interval that maintenance one is scheduled between the metallic conductor; Wherein, On the insulation parent between the said adjacent metal conductor, be provided with rectangle heat radiation through hole; Said rectangular through holes is arranged along the insulation parent between the adjacent metal conductor with interval mode, between the adjacent metal end conductor, forms open inside shrinkage pool.

Said rectangular through holes is arranged along the insulation parent between the adjacent metal conductor with single interval mode.

The through hole that insulation parent between the said adjacent metal conductor is provided with is square heat radiation through hole.

The said open inside shrinkage pool that between the adjacent metal end conductor, forms is two, and a ribs is arranged between two shrinkage pools.

The upper and lower sides end of said metallic conductor is a circular arc.

The material of said coiler-type insulator is identical with the material of insulation parent.

The insulation parent that the utility model is employed between the said adjacent metal conductor is provided with the rectangle louvre; Said rectangular through holes is arranged along the insulation parent between the adjacent metal conductor with single interval mode; Between the adjacent metal end conductor, form open inside shrinkage pool and ribs, make the bus duct perfect heat-dissipating to have high-insulativity and high-protection level; And energy-saving effect preferably, mechanical strength also reaches requirement.The utility model has the coiler-type insulator as changeover portion between metallic conductor two ends and insulation parent, to form phase insulation preferably, be applicable to the electric power transfer in the intermediate voltage electric power system.

Description of drawings

Fig. 1 presses full cast-type bus duct structural representation among the utility model 35kV;

Fig. 2 is the metallic conductor cross sectional representation of the utility model;

The two position view when Fig. 3 engages for the utility model bus duct;

Structural representation when Fig. 4 engages for the utility model bus duct;

Fig. 5 is portion's sketch map during for the utility model bus duct connecing after engaging;

Among the figure: 1 insulation parent, 2 metallic conductors, 21 a phase metallic conductors, 22 b phase metallic conductors, 23 c phase metallic conductors; 3 louvres, 4 open inward recess, 5 coiler-type insulators, 6 ribs, 7 connect guide plate; 8 bolts, 9 continual-connecting-parts, 91 metallic conductors continue, and 92 ribs continue, 10 connecting grooves.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

Referring to Fig. 1, press full cast-type bus duct among a kind of 35kV, comprise an insulation parent 1 and several metallic conductors 2; With three metallic conductors is example; Be three-phase conductor, promptly a1 phase metallic conductor 21, b1 phase metallic conductor 22, c1 phase metallic conductor 23 are as shown in Figure 1; The bus duct profile is a column, and metallic conductor 2 can be copper or aluminium conductor.

Said three metallic conductor 2 major parts are insulated parent 1 and coat; 2 liang of ends of metallic conductor are exposed; Between metallic conductor two ends and insulation parent, coiler-type insulator 5 is arranged as changeover portion, the material of said coiler-type insulator 5 is identical with the material of insulation parent 1, to form phase insulation; And keep a predetermined interval between three metallic conductors 2, this is spaced apart phase spacing L1, must reach safe distance; On the insulation parent 1 between the said adjacent metal conductor 2, be provided with rectangle heat radiation through hole 3; With square through-hole for well; Said square louvre 3 is arranged along the insulation parent 1 of 2 of adjacent metal conductors with single interval mode; Said square louvre 3 is a blind hole, and parent 1 heat radiation is beneficial to insulate; Between adjacent metal conductor 2 ends, form open inside shrinkage pool 4.

Said closed square louvre 3 possesses maximum area of dissipation, girth and optimal mechanical structure; With certain spacing arrangement in 2 of metallic conductors; The radiating effect of relative lifting metallic conductor 2 makes the electric current optimizing effect of metallic conductor 2, to reach purpose of energy saving.3 of closed square louvres keep a minimum range h1, and are as shown in Figure 1, to guarantee and to strengthen the short circuit current intensity I of bus duct _CcWith overload current I _Pk

The said open inside shrinkage pool 4 that between adjacent metal conductor 2 ends, forms is two, and a ribs 6 is arranged between two shrinkage pools 4.Two inside shrinkage pools 4 are extended by aforesaid square through-hole 3, open square louvre (being inside shrinkage pool 4) is disposed between adjacent two metallic conductors 2 ends, have increased the creepage distance and the mechanical strength that continues of 2 of metallic conductors; Can reach the function of enough extinguishing arcs, to guarantee the insulating properties of 2 of metallic conductors.Ribs 6 act as mechanical strength and the insulation characterisitic that increases the position of continuing.

The upper and lower sides end of said metallic conductor 2 is a circular arc, and to avoid in middle pressure bus duct uses, producing partial discharge phenomenon, referring to Fig. 2, f is depicted as circular arc among Fig. 2.For cooperating electric power system transferring electric power demand, bus duct can be annotated completion by different types in advance, cooperates transmission path to be connected in the scene to install again and combines; Therefore two ends are exposed conductor 2 and will be formed the above connecting groove of at least one groove 10, referring to Fig. 3, so that reach the function of linking.

In addition, the shape of square louvre 3 is all relevant with the employed insulating material of the utility model with arranging density.

After

metallic conductor

2 and 3 configurations of square louvre are complete, the fixed form in both sides, parent 1 cast of insulating coats metallic conductor 2, referring to Fig. 1, makes bus duct form the honeycomb column.Insulation parent 1 is by high temperature resistant ore in sand form and high temperature resistant polymer resin be combined into coiler-type insulator 5, possesses characteristics such as high temperature resistant, weatherability, resistance to chemical attack, salt tolerant evil, high insulation, high heat radiation, high mechanical properties; So be applicable to the electric power transfer in the intermediate voltage electric power system.

Cooperate the electric energy transfer path, engage operation with annotating the bus duct of accomplishing in advance, form a continual-connecting-part 9, described continual-connecting-part 9 has comprised that metallic conductor continues and 91 has continued 92 with ribs, referring to Fig. 5.Metallic conductor 2 continues and is: at first with behind the bus duct location; Make the metallic conductor 2 of its adjacent face keep certain distance; Distance as shown in Figure 3 is j, the longitudinal deformation amount (promptly being parallel to the thermal deformation of metallic conductor) that this distance is expanded with heat and contract with cold for metallic conductor 2 in fair receipts connection bus groove bonding error and the power system operation, and secondly will connect guide plate 7 is attached at metallic conductor 2 both sides; Fix with bolt 8 nut checks again, referring to Fig. 4.Through after the coherence check affirmation, pouring operation continues after the locking; Metallic conductor continued 91 continues with ribs and 92 to carry out pouring practice with insulator with material such as insulation parent 1 etc., treat the insulator drying after, i.e. complete connection operation.Make complete section of bus duct to reach identical degree of protection like this, referring to Fig. 5.

Bus duct is being installed and can fixed with storing formula or lift-on/lift-off type according to field environmental condition.

More than be merely the preferred embodiment of the utility model; It is not the protection range that is used to limit the utility model; Therefore, any modification of being done within all spirit and principles at the utility model, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.

Claims

1. press full cast-type bus duct among a 35kV; It is characterized in that: comprise an insulation parent and several metallic conductors; Said metallic conductor major part is insulated parent and coats, and metallic conductor two is terminal exposed, between metallic conductor two ends and insulation parent, the coiler-type insulator is arranged as changeover portion; And the interval that maintenance one is scheduled between the metallic conductor; Wherein, On the insulation parent between the said adjacent metal conductor, be provided with rectangle heat radiation through hole; Said rectangular through holes is arranged along the insulation parent between the adjacent metal conductor with interval mode, between the adjacent metal end conductor, forms open inside shrinkage pool.

2. press full cast-type bus duct among the 35kV according to claim 1, it is characterized in that: said rectangular through holes is arranged along the insulation parent between the adjacent metal conductor with single interval mode.

3. press full cast-type bus duct among the 35kV according to claim 1 and 2, it is characterized in that: the through hole that the insulation parent between the said adjacent metal conductor is provided with is square heat radiation through hole.

4. press full cast-type bus duct among the 35kV according to claim 1, it is characterized in that: the said open inside shrinkage pool that between the adjacent metal end conductor, forms is two, and a ribs is arranged between two shrinkage pools.

5. press full cast-type bus duct among the 35kV according to claim 1, it is characterized in that: the upper and lower sides end of said metallic conductor is a circular arc.

6. press full cast-type bus duct among the 35kV according to claim 1, it is characterized in that: the material of said coiler-type insulator is identical with the material of insulation parent.