CN211239236U

CN211239236U - Side-by-side bus mounting structure and plugging structure

Info

Publication number: CN211239236U
Application number: CN201922242192.8U
Authority: CN
Inventors: 王广先; 黄强; 吴昊; 裴军; 李锦彪; 赵瑞影
Original assignee: Chint Electric Co Ltd
Current assignee: Chint Electric Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-08-11
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a side-by-side bus mounting structure and a plugging structure, wherein a first welding nut is welded on the inner side of a side plate of a gas box, a gas box reinforcing plate is welded on the outer side of the side plate of the gas box at the position of a side-by-side bus plugging sleeve, and a second hole is arranged on the gas box reinforcing plate corresponding to the first hole on the side plate of the gas box; the outer side of the side plate of the gas box positioned on the end side is welded with a second welding nut, the bus compression joint sealing plate is connected with the side plate of the gas box through the second welding nut, the other end of the bus plug is higher than the outer surface of the side plate of the gas box, and a groove is formed in the position, contacting with the bus plug, of the inner side of the bus compression joint sealing plate. The utility model discloses the reinforcing plate and the stainless steel welded nut of side and generating line grafting sleeve pipe position welding stainless steel in the gas tank outside both play enhancement gas tank curb plate intensity effect, can carry out accurate welding position to the nut again. Through increasing the height of the bus plug and designing an annular groove at the bottom of the bus plug, the problem of secondary disassembly and assembly is solved.

Description

Side-by-side bus mounting structure and plugging structure

Technical Field

The utility model relates to a mounting structure and block structure of side and generating line belongs to switchgear technical field.

Background

The bus connection mode of the gas insulated switchgear equipment comprises top expansion and side expansion, and the side expansion mode uses a side-parallel bus connection device to realize bus connection expansion between the cabinets. As shown in fig. 1-4, the side-by-side bus connection device is composed of a side-by-side bus plugging sleeve 2, a silicone rubber sleeve 3, a copper conducting rod 4, a contact finger 5, a grounding wire 6, a flange 7 and a bus plug 8. As shown in fig. 10 and 11, the bus plugging sleeve 2 is mounted on the flange 7, the contact finger 5 is mounted in the conductor slot of the plugging sleeve 2, one end of the copper conducting rod 4 is inserted into the sleeve 2 and is completely contacted with the contact finger 5, the other end is inserted into another gas box bus plugging sleeve during cabinet combination, one end of the silicone rubber sleeve 3 is sleeved into the sleeve 2 along the copper conducting rod 4 as shown in (a) of fig. 11, the other end is sleeved into another gas box bus plugging sleeve during cabinet combination, and the grounding wire 6 is located in the middle of the silicone rubber sleeve 3 as shown in (b) of fig. 11. The lateral bus-parallel insertion sleeves 2 are arranged on two sides of the gas box 1 and realize bus connection of the cabinet body by installing the silicon rubber sleeve 3 and the copper conducting rod 4. For the end cabinet, the side parallel bus plugging sleeve 2 at the side of the end cabinet needs to be provided with a bus plug 8 for plugging so as to meet the requirement of side parallel bus full-sealing full-insulation.

According to the traditional bus side-mounted blocking structure, a stud is welded on the outer side of a gas box, after a bus plug 8 is mounted on the side and a bus plug sleeve 2 is inserted, a 3.0mm thick plug pressing plate (a conventional plug pressing plate is a 3-5 mm steel plate) is used for crimping the bus plug 8, loosening is prevented, and the plug pressing plate is fixedly mounted on the stud. The stud welding strength of this scheme is low, receives welding process to influence, and welding stud straightness that hangs down can't be guaranteed, and stud welding solder joint is concentrated, and the gas tank is yielding, among the in-service use process if the assembly nut fastening force too big can lead to stud fracture or gas tank tensile deformation to influence the leakproofness. And for the condition that the cabinet combination gap is required to be less than 20mm after the two cabinet bodies are fully closed, the length of the stud is limited, so that the bus plug 8 is not pressed firmly, and the insulation breakdown fault is easily caused during the insulation test.

After traditional generating line end cap 8 inserted side and generating line grafting sleeve pipe 2, for guaranteeing good sealed and insulating nature, scribble a large amount of insulating silicone grease between generating line end cap 8 and side and generating line grafting sleeve pipe 2, the generating line end cap 8 surface is the complete parallel and level with the gas tank after the installation, but later stage dismantlement is very difficult, is not fit for dismantling repeatedly.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: how to make the generating line side dress block structure avoid the gas tank to warp, generating line end cap crimping not real, the very difficult problem of later stage dismantlement.

In order to solve the technical problem, the technical scheme of the utility model provides a mounting structure of side and generating line is provided, including side and generating line grafting sleeve pipe, side and generating line grafting sheathed tube bottom is equipped with the flange rather than an organic whole setting, side and generating line grafting sleeve pipe pass through the flange to be fixed on the curb plate of controlling in the gas tank, be fixed with side and generating line grafting sheathed tube position on the curb plate of gas tank and open there is first hole, a serial communication port, the inboard welding of curb plate of gas tank have first welding nut, the flange is fixed on first welding nut, the curb plate outside of gas tank lies in side and generating line grafting sheathed tube position welding and has the gas tank reinforcing plate, the position that corresponds with the first hole on the gas tank curb plate on the gas tank reinforcing plate is equipped with the second hole.

Preferably, an O-shaped sealing ring is arranged between the flange and the side plate of the air box.

Preferably, the gas box reinforcing plate is a stainless steel plate; the first weld nut and the second weld nut are both stainless steel weld nuts.

A side-by-side bus blocking structure comprises a bus plug, wherein one end of the bus plug penetrates through a hole in a side plate of a gas box from the outer side of the side plate of the gas box to be arranged in a side-by-side bus insertion sleeve, the other end of the bus plug is provided with a bus compression sealing plate fixed on the outer side of the side plate of the gas box, the side-by-side bus blocking structure is characterized by further comprising a side-by-side bus mounting structure, a second welding nut is welded on the outer side of the side plate of the gas box positioned on the end side, a gas box reinforcing plate is arranged between the bus compression sealing plate and the side plate of the gas box, the bus compression sealing plate is connected with the side plate of the gas box through the second welding nut, the bus plug is arranged in a second hole of the gas box reinforcing plate, the other end of; the outer diameter of the groove is matched with the other end of the bus plug, and the depth of the groove is smaller than the depth of the other end of the bus plug protruding out of the outer surface of the side plate of the gas box.

Preferably, the gas box reinforcing plate is provided with a positioning hole for welding and positioning the second welding nut.

Preferably, the depth of the groove is 1-2 mm smaller than the depth of the other end of the bus plug protruding out of the outer surface of the side plate of the air box.

Preferably, a counter bore is arranged at the contact position of the bus bar crimping closing plate and the second welding nut.

Preferably, a groove is formed around the bottom of the bus plug; the groove is arranged on the outer side of the side plate of the air box.

Preferably, the bus bar crimping closing plate is an aluminum plate.

The utility model discloses a generating line side dress block structure changes original welding double-screw bolt into highly low, and the welding is more leveled firm special stainless steel welded nut and is replaced, and the crimping shrouding changes into the aluminum plate of high strength and replaces. The side outside the gas tank and the bus splicing sleeve position weld the reinforcing plate and the stainless steel welded nut of stainless steel, open the locating hole of stainless steel welded nut on the reinforcing plate, this reinforcing plate had both played the effect of strengthening gas tank curb plate intensity, prevented that the curb plate warp, can carry out accurate welding position to the nut again, improved bus installation accuracy. Through increaseing the generating line end cap height and at generating line end cap bottom design annular groove, fine solution the problem of secondary dismouting. After the side and the bus plug sleeve pipe are installed, the bus plug is fastened by using a high-strength compression joint sealing plate, the bus plug is guaranteed to be reliably installed, the groove is additionally arranged at the bottom of the bus plug, and the bus plug is convenient to detach and recycle.

Drawings

FIG. 1 is a front view of a conventional bus bar side-mounted block structure;

FIG. 2 is a left side view (partial) of FIG. 1;

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a schematic exploded view of FIG. 2;

FIG. 5 is a schematic view of a bus bar crimp seal plate mounted on a side plate of an air box;

fig. 6 is a schematic split view of a side-by-side bus plugging structure of the present invention;

FIG. 7 is a front view of a side-by-side bus plugging structure mounted on the left and right side plates of the air box;

FIG. 8 is a right side view of FIG. 5;

FIG. 9 is a cross-sectional view A-A of FIG. 8;

FIG. 10 is a schematic view of the construction of a side-by-side bus bar connection;

FIG. 11 is a schematic view of the installation steps of the side-by-side bus bar connection device.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The two adjacent gas boxes 1 are connected together through a side and bus mounting structure through buses, and the side and bus mounting structure comprises side and bus inserting sleeves 2 as shown in fig. 5 and 6, the side and bus inserting sleeves 2 are mounted on left and right side plates in the gas boxes 1, flanges 7 integrally arranged with the side and bus inserting sleeves 2 are arranged at the bottoms of the side and bus inserting sleeves 2, the side and bus inserting sleeves 2 are fixed on the side plates in the gas boxes 1 through the flanges 7, first holes are formed in the positions, fixed with the side and bus inserting sleeves 2, of the side plates of the gas boxes 1, and the flanges 7 are fixed on circumferential outer rings of the first holes. A first welding nut 9 of 6-M6 is welded on the inner side of the side plate of the gas tank 1, a side-parallel bus insertion sleeve 2 is fixed on the first welding nut 9 through a bolt and is sealed by an O-shaped sealing ring 14 between the flange 7 and the side plate of the gas tank 1; gas tank reinforcing plate 10 and second welded nut 12 are welded in the curb plate outside, and gas tank reinforcing plate 10 adopts 3.0mm corrosion resistant plate, prevents that the curb plate from warping, improves generating line installation accuracy.

Gas tank reinforcing plate 10 welds in the side in the gas tank outside and generating line grafting sleeve pipe 2 position, and the position that corresponds with the first hole on the 1 curb plate of gas tank is equipped with the second hole on the gas tank reinforcing plate 10, and the locating hole 13 of opening second welded nut 12 on the gas tank reinforcing plate 10, this gas tank reinforcing plate 10 both play and strengthen gas tank curb plate intensity effect, can carry out accurate welding position to the nut again.

For a side plate of an end cabinet (namely, the gas box 1 at the end side), the side parallel bus plugging sleeve 2 needs to be plugged by a bus plug 8. A side-by-side bus plugging structure is shown in fig. 6-9, and further comprises a bus plug 8 on the basis of a side-by-side bus mounting structure, wherein one end of the bus plug 8 penetrates through a hole in a side plate of an air box 1 from the outer side of the side plate of the air box 1 and is arranged in a side-by-side bus plugging sleeve 2, the other end of the bus plug 8 is provided with a bus pressing sealing plate 11 fixed on the outer side of the side plate of the air box 1, namely, the bus plug 8 is pressed into a cavity of the side-by-side bus plugging sleeve 2 by using the bus pressing sealing plate 11. The second welding nut 12 is further welded on the outer side of the side plate of the gas box 1 located on the end side, the gas box reinforcing plate 10 is arranged between the bus compression sealing plate 11 and the side plate of the gas box 1, the bus compression sealing plate 11 is connected with the side plate of the gas box 1 through the second welding nut 12, the bus plug 8 is arranged in a second hole of the gas box reinforcing plate 10, the other end of the bus plug 8 is higher than the outer surface of the side plate of the gas box 1, a groove is formed in the contact surface of the bus compression sealing plate 11 and the bus plug 8, the outer diameter of the groove just covers the side plate of the gas box 1 with the bus plug 8 protruding, the bus plug 8 is positioned and corrected, the depth of the groove is 2mm smaller than that of the side plate of the gas box 8 protruding, and the compression connection of. The bus pressing seal plate 11 is fixed through a second welding nut 12 on the gas tank 1, and a counter bore is adopted on the contact surface of the bus pressing seal plate 11 and the second welding nut 12.

The first weld nut 9 and the second weld nut 12 are both stainless steel weld nuts; the bus bar press-connection closing plate 11 is an aluminum plate. The bus bar crimping closing plate 11 has the same structure as the plug pressing plate in the prior art.

Be designed with the recess around generating line end cap 8's the bottom, the outside of 1 curb plate of gas tank is located to the recess, makes things convenient for the dismantlement of generating line end cap 8, and generating line end cap 8 normally loads into the side and generating line grafting sleeve pipe 2 back, and the recess position of generating line end cap 8 bottom is outstanding the gas tank curb plate, relies on generating line crimping shrouding 11 to fix the crimping, and when generating line end cap 8 was dismantled, the recess position and the rotation of the tight generating line end cap 8 of hand were twisted off.

The gas tank reinforcing plate 10 is designed reasonably and optimally, and synchronous positioning welding of the gas tank reinforcing plate 10 and the second welding nut 12 is achieved. Because the bus compression joint sealing plate in the traditional process is installed by adopting the welding studs, the welding strength of the studs is low, the studs are easy to deform and break, and the length of the studs is limited by the gap of the cabinet combination. After the second weld nut 12 is used, the second weld nut 12 is low in height, large in area and firm in welding. The traditional process welding step is to weld the gas tank reinforcing plate 10 firstly and then weld the stud by using a stud welding tool, so that the steps are complicated, and the positioning precision is inaccurate. The utility model discloses a synchronous fixed-position welding of gas tank reinforcing plate 10, second welded nut 12 is realized to the structure, improves production efficiency and welding quality.

6-M6 stainless steel welding nuts are welded on the inner side of the side plate of the gas tank and used for fixing the flange 7 of the side-parallel bus plug-in sleeve 2, so that the welding contact area is increased, and the stud height is reduced. The defects of high strength, verticality, large welding deformation of a sealing surface of the gas tank and the like of the welding stud adopted in the traditional process are overcome.

Claims

1. The utility model provides a side and mounting structure of generating line, includes side and generating line grafting sleeve pipe (2), the bottom of side and generating line grafting sleeve pipe (2) is equipped with flange (7) rather than integrative setting, side and generating line grafting sleeve pipe (2) pass through flange (7) to be fixed on the curb plate of controlling in gas tank (1), the position that is fixed with side and generating line grafting sleeve pipe (2) on the curb plate of gas tank (1) is opened there is first hole, a serial communication port, the inboard welding of curb plate of gas tank (1) have first welding nut (9), flange (7) are fixed on first welding nut (9), the curb plate outside of gas tank (1) is located the position welding of side and generating line grafting sleeve pipe (2) and has gas tank reinforcing plate (10), the position that corresponds with first hole on gas tank reinforcing plate (10) the curb plate of gas tank (1) is equipped with the second hole.

2. A side-by-side busbar mounting arrangement as claimed in claim 1, wherein O-rings (14) are provided between said flange (7) and the side plate of the gas box (1).

3. A side-by-side busbar mounting structure as claimed in claim 1, wherein said gas box reinforcing plate (10) is a stainless steel plate; the first weld nut (9) and the second weld nut (12) are both stainless steel weld nuts.

4. A side-by-side bus blocking structure comprises a bus plug (8), one end of the bus plug (8) penetrates through a hole on a side plate of a gas box (1) from the outer side of the side plate of the gas box (1) to be arranged in a side-by-side bus inserting sleeve (2), the other end of the bus plug (8) is provided with a bus pressing sealing plate (11) fixed on the outer side of the side plate of the gas box (1), the side-by-side bus blocking structure is characterized by further comprising a side-by-side bus installing structure as claimed in any one of claims 1-3, a second welding nut (12) is welded on the outer side of the side plate of the gas box (1) on the end side, a gas box reinforcing plate (10) is arranged between the bus pressing sealing plate (11) and the side plate of the gas box (1), the bus pressing sealing plate (11) is connected with the side plate of the gas box (1) through the second welding nut (12), the bus plug (8) is, the other end of the bus plug (8) is higher than the outer surface of the side plate of the gas box (1), and a groove is formed in the position, in contact with the bus plug (8), of the inner side of the bus compression sealing plate (11); the outer diameter of the groove is matched with the other end of the bus plug (8), and the depth of the groove is smaller than the depth of the other end of the bus plug (8) protruding out of the outer surface of the side plate of the gas box (1).

5. A side busbar plugging structure according to claim 4, wherein said air box reinforcing plate (10) is provided with positioning holes (13) for welding and positioning of said second weld nuts (12).

6. A side-by-side busbar plugging structure according to claim 4, wherein the depth of the groove is 1-2 mm less than the depth of the other end of the busbar plug (8) protruding out of the outer surface of the side plate of the air box (1).

7. A side bus bar blocking structure according to claim 4, wherein the bus bar crimping closing plate (11) is provided with a counter bore at a contact position with the second welding nut (12).

8. A side-by-side busbar plugging structure according to claim 4, wherein a groove is formed around the bottom of the busbar plug (8); the groove is arranged on the outer side of the side plate of the air box (1).

9. A side-by-side busbar plugging structure according to claim 4, wherein said busbar crimping cover plate (11) is an aluminum plate.