CN2521727Y

CN2521727Y - Combined transformer low-voltage binding post

Info

Publication number: CN2521727Y
Application number: CN 01202731
Authority: CN
Inventors: 李江峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-01-01
Filing date: 2001-01-01
Publication date: 2002-11-20
Anticipated expiration: 2011-01-01

Abstract

The utility model belongs to a special low voltage connecting terminal arranged on a combinational transformer. The connecting terminal comprises a copper conductor (1), an epoxy resin casting (2), an oil resistance rubber seal ring (4), and a stainless steel plate (3) provided with an alignment pin. One end of the conductor (1) is made into a row state and provided with a plurality of round holes for connecting a low voltage bus bar, another end of the conductor is provided with a screw thread matching cupper nut (5) and a cupper gasket (6). The middle portion of the conductor (1) is covered by the epoxy resin casting (2). The plate (3) presses the seal ring (4) on the wall of a box through the epoxy resin casting (2) for sealing. The plate (3) can locate the casting (2) to fix the connecting terminal. The utility model has the advantages of novel structure, practicality, safe, and convenient installing.

Description

The combined transformer low-voltage wiring terminal

The utility model belongs to the special-purpose low-pressure side binding post (or claiming low-tension bushing) on the combined transformer (claiming American case to become again).

At present, the low-voltage wiring terminal that China's transformer industry is continued to use generally adopts the copper conducting rod of certain specification, and the conducting rod overcoat plays the electroceramics of insulation support fixation effect, is full of transformer oil in the porcelain vase.As the serial wafer type sleeve pipe in BF-1/300～3000 of the unified design of Shenyang Transformer Research Institute and Shenyang City * * WFT1-1/300～European case of 3000A series that extraordinary power equipment factory produces becomes the transformer low-tension bushing.Such sleeve pipe is installed on the transformer, and the subject matter of its existence is: electroceramics is partly fixed or is strained with copper screw bolt with the pressure nail, and sleeve pipe is being subjected to be prone to oil seepage phenomena under the cross force effect, and electroceramics is being subjected to easily fragmentation under the external impacts; Outside employing screw rod adds the nut mode and connects with the low pressure busbar, use very inconvenient, and be in contact with one another between screw rod and low pressure busbar that area is little, contact resistance is big, easily aging, the transformer of heating, seal oozes oil spill rate and greatly increases easily, has very big accident potential.

The purpose of this utility model is to provide a kind of reliable, easy for installation, firm practical safety of contact area, novel structure science, terminal position that can increase terminal and low pressure busbar, and can significantly reduce the binding post that combined transformer oozes oil spill rate.

The utility model mainly is made up of four parts such as electric conductor, pour mass, sealing ring and pressing plates.Electric conductor is by adopting the red copper cast and constituting through conducting rod and copper nut, the copper washer of machine-shaping, and conducting rod one end is made row's shape, has a plurality of circular holes on the row, and the other end is made screw shaped; At the electric conductor middle part, be covered into pour mass with epoxy resin, a location hole is driven in the nearly busbar of pour mass side end face; In the nearly nut side of pour mass, put a ring-type oil resistant rubber sealing ring, the sealing ring cross section is a rectangle; The nearly busbar side of pour mass is put a square stainless steel platen, opens a big hole in the middle of the pressing plate, opens small sircle hole respectively near three arms of angle, opens a rectangle slotted hole near the 4th arm of angle, puts an alignment pin at pressing plate near the edge of middle macropore.

When being combined into cover with top, the conductive lever that has screw thread on the electric conductor partly inserts in the combined transformer sidewall, links to each other with transformer body low-voltage lead lug plate; Pressing plate is pressed on sealing ring on the tank wall by pour mass and seals; Pour mass plays insulation and support fixation effect; Pressing plate works the binding post effect that compresses, alignment pin on the pressing plate and the location hole on the pour mass cooperatively interact and play the role of positioning, change 90 °, 180 °, 270 ° respectively when installing as pressing plate, whole binding post is also thereupon changeing 90 °, 180 °, 270 ° and be fixed respectively; Four macropores on the busbar can be done to connect usefulness with the low pressure busbar, and two apertures are done earthy.Compare with this utility model, the European case change of serial wafer type sleeve pipe in conventional BF-1/3000～3000 and WFT1-1/300～3000A series transformer except that having conducting function, does not possess above function with low-tension bushing.

Fig. 1 is a front view of the present utility model.

Fig. 2 is an electric conductor front view of the present utility model.

Fig. 3 is an electric conductor left view of the present utility model.

Fig. 4 is a pour mass front view of the present utility model.

Fig. 5 is a pour mass vertical view of the present utility model.

Fig. 6 is a sealing ring front view of the present utility model.

Fig. 7 is a sealing ring vertical view of the present utility model.

Fig. 8 is a pressing plate front view of the present utility model.

Fig. 9 is a pressing plate vertical view of the present utility model.

Below in conjunction with a description of drawings embodiment of the present utility model:

As shown in Figure 1, the utility model is made up of electric conductor (1), pour mass (2), sealing ring (4) and pressing plate four parts such as (3).Electric conductor (1) is by adopting the red copper cast and through the conducting rod (Fig. 2) of machine-shaping and copper nut (5), copper washer (6) formation, conducting rod one end is made row's shape, has several circular holes on the row, and the other end is made screw shaped; At electric conductor (1) middle part, be covered into pour mass (2) with epoxy resin, a location hole (among Fig. 5 10) is driven in the nearly busbar of pour mass side end face; In nearly nut (5) side of pour mass (2), put a ring-type oil resistant rubber sealing ring (4), the sealing ring cross section is rectangle (among Fig. 7 12); The nearly busbar side one square stainless steel platen (3) of pour mass (2), open a big hole (among Fig. 9 14) in the middle of the pressing plate, open small sircle hole (among Fig. 9 13) respectively near three arms of angle, open a rectangle slotted hole (among Fig. 9 15) near the 4th arm of angle, at the edge of pressing plate (3), put a stainless steel alignment pin (among Fig. 8 11) near middle macropore (among Fig. 9 14).During use, the conductive lever that has screw thread (among Fig. 2 9) on the electric conductor (1) partly inserts in the combined transformer sidewall, links to each other with transformer body low-voltage lead lug plate; Pressing plate (3) is pressed on sealing ring (4) on the tank wall by pour mass (2) and seals; Pour mass (2) plays insulation and support fixation effect; Cooperatively interact plays the role of positioning location hole on alignment pin on the pressing plate (3) (among Fig. 8 11) and the pour mass (2) (among Fig. 5 10), change 90 °, 180 °, 270 ° respectively when installing as pressing plate (3), whole binding post is also thereupon changeing 90 °, 180 °, 270 ° and be fixed respectively; Four macropores on the busbar (among Fig. 2 7) can be done to connect usefulness with the low pressure busbar, and two apertures (among Fig. 2 8) are done earthy.Transformer low voltage lead-in wire lug plate and terminal conductive lever are tightened fixing by nut (5) and packing ring (6).

The utility model can be according to the actual conditions needs, the horizontal row that will conduct electricity dress or perpendicular dress, the novel structure science, the electric device contact resistance is little, the location is reliable, practical safety, install very convenient.

Claims

1, a kind of combined transformer low-voltage wiring terminal, it is made up of copper electric conductor, epoxy resin poured body, oil resistant rubber sealing ring and stainless steel platen, it is characterized in that: adopt red copper casting and electric conductor through shaping, electric conductor one end is made the busbar shape, the other end that have a plurality of circular holes and is made screw shaped, and screw rod is furnished with copper nut and copper washer; Electric conductor middle part lining epoxy resin poured body; Open a big hole in the middle of the pressing plate, open three apertures and a rectangle slotted hole on the limit, pressing plate compresses sealing ring by pour mass and seals, and pressing plate can be located pour mass fixes binding post.

2, combined transformer low-voltage wiring terminal according to claim 1 is characterized in that: the nearly busbar side end face of epoxy resin poured body has location hole.

3, combined transformer low-voltage wiring terminal according to claim 1 is characterized in that: establish an alignment pin on the side plane of stainless steel platen.

4, combined transformer low-voltage wiring terminal according to claim 1 is characterized in that: oil resistant rubber seal washer cross section is a rectangle.