CN218183004U

CN218183004U - Transformer neutral point gap grounding device

Info

Publication number: CN218183004U
Application number: CN202221810950.7U
Authority: CN
Inventors: 李静
Original assignee: Shandong Runheng Information Technology Co ltd
Current assignee: Shandong Runheng Information Technology Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-12-30
Anticipated expiration: 2032-07-14

Abstract

The utility model discloses a transformer neutral point clearance earthing device, include: the lightning arrester comprises a supporting frame, a current transformer, a discharge gap and a lightning arrester; a current transformer is connected above the supporting frame, the supporting frame is used as a bearing foundation, and one side of the lightning arrester is connected with a movable contact switch; the base, fixed connection be in the arrester below, the base below is connected with the picture peg, the butt joint frame is connected in the carriage top. Pass through groove 13 through rotatory T type pole 12, and reset under torsional spring 25's effect, can install arrester 4 in the 1 top of carriage, through rotatory threaded rod 17, can drive regulating plate 16 and remove, and then drive current transformer 2 and remove, thereby can adjust the distance between discharge gap 3, make discharge gap 3 can adapt to the demand under the different actual conditions, through installing wear pad 24 additional in carriage 1 bottom, make carriage 1 can not direct and ground contact, and then prevent that carriage 1 bottom from receiving wearing and tearing.

Description

Transformer neutral point gap grounding device

Technical Field

The utility model relates to a transformer protection equipment technical field specifically is a transformer neutral point clearance earthing device.

Background

Because the main voltage is very high, the neutral point generally adopts a direct grounding mode, and meanwhile, partial transformers adopt a neutral point ungrounded mode, under the operation mode, the neutral point overvoltage can be caused by lightning stroke, single-phase grounding short circuit fault and the like, the accident must be prevented by using a neutral point gap grounding device, and the existing neutral point gap grounding device has certain defects when in use, such as the case;

the lightning arrester is generally fixedly installed by penetrating four groups of bolts through the base and arranging nuts below the bottom support in a threaded manner, so that the installation process is complicated, the lightning arrester is inconvenient to disassemble and replace, and the discharge gap is inconvenient to adjust according to actual conditions such as local environment and the like;

improvements are needed to address the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer neutral point clearance earthing device to solve the neutral point clearance earthing device on the existing market that the above-mentioned background art provided because the arrester generally runs through the base through four group's bolts and is provided with nut threaded connection with the bottom sprag below, carry out fixed mounting, the installation is comparatively loaded down with trivial details, and also comparatively inconvenient when dismantling the change, the clearance of discharging simultaneously is not convenient for adjust the scheduling problem according to actual conditions such as local environment.

In order to achieve the above object, the utility model provides a following technical scheme: a transformer neutral gap grounding apparatus comprising: the lightning arrester comprises a supporting frame, a current transformer, a discharge gap and a lightning arrester;

a current transformer is connected above the supporting frame, the supporting frame is used as a bearing foundation, a discharge gap is formed in the current transformer, a lightning arrester is arranged above the supporting frame, and one side of the lightning arrester is connected with a movable contact switch;

the base, fixed connection be in the arrester below, the base below is connected with the picture peg, picture peg one side is connected with the butt joint convex plate, butt joint convex plate block is connected in the butt joint concave plate, the butt joint concave plate is connected on the butt joint frame inside wall, the butt joint frame is connected in the carriage top.

Preferably, a first bearing seat is connected to the outer side of the butt joint frame, a T-shaped rod is connected into the first bearing seat, the T-shaped rod is connected into a through groove in a penetrating manner, and the through groove is formed in the base;

and one end of the torsion spring is connected above the first bearing seat, and the other end of the torsion spring is connected on the T-shaped rod.

Preferably, the first bearing seat, the T-shaped rod and the torsion spring form a rotary reset structure, the length of the end part of the T-shaped rod is greater than the length of the inside of the through groove, and the length of the end part of the T-shaped rod is less than the width of the inside of the through groove.

Preferably, be connected with the slide rail on the carriage inside wall, sliding connection has the slider in the slide rail, slider one side is connected with the regulating plate, the regulating plate is connected in the current transformer below.

Preferably, the adjusting plate is internally threaded with a threaded rod, one end of the threaded rod is connected with a bearing, and the bearing is connected to the inner wall of the supporting frame;

the handle, through connection is in carriage one side, the threaded rod other end is connected to handle one end.

Preferably, slide rail, slider, regulating plate, threaded rod, bearing and handle constitute position control structure, and the length of slide rail equals with the inside length of carriage.

Preferably, the bracing frame outside is connected with the diaphragm, the diaphragm below is connected with the lead screw, threaded connection has an internal thread section of thick bamboo on the lead screw, an internal thread section of thick bamboo is connected in the second bearing frame, second bearing frame one side is connected with the wear pad, the wear pad is connected in the bracing frame below.

Preferably, the inner depth of the internal thread cylinder is smaller than the height of the internal thread cylinder, and the overlooked cross-sectional area of the wear pad is larger than the overlooked cross-sectional area of the support frame.

Compared with the prior art, the beneficial effects of the utility model are that: pass logical groove 13 through rotatory T type pole 12, and reset under torsional spring 25's effect, can install arrester 4 in the 1 top of carriage, through rotatory threaded rod 17, can drive regulating plate 16 and remove, and then drive current transformer 2 and remove, thereby can adjust the distance between discharge gap 3, make discharge gap 3 can adapt to the demand under the different actual conditions, through install wear pad 24 additional in carriage 1 bottom, make carriage 1 can not direct and ground contact, and then prevent carriage 1 bottom from receiving wearing and tearing, concrete content is as follows:

1. firstly, inserting an inserting plate at the bottom of the lightning arrester into a butt joint frame, rotating a T-shaped rod when a butt joint convex plate is not completely clamped into a butt joint concave plate, wherein when the butt joint convex plate is completely clamped into the butt joint concave plate, the end part of the T-shaped rod just passes through a through groove, loosening the T-shaped rod, automatically resetting the T-shaped rod under the action of a torsion spring, abutting the T-shaped rod against the upper part of a base, and further installing the lightning arrester above a supporting frame;

2. after the integral installation is finished, the handle is rotated, the threaded rod is driven to rotate by the handle, the adjusting plate can move along the inner part of the supporting frame, and then the current transformer is driven to move, so that the distance of the discharge gap can be adjusted according to actual requirements;

3. before the installation, cover the cushion in the carriage below, rotatory internal thread section of thick bamboo, when the internal thread section of thick bamboo is rotatory, with lead screw threaded connection, until cushion and the laminating of carriage below to install the cushion in the carriage below, when the installation carriage, can not directly contact with the installation face through the cushion, and then prevent that the carriage bottom from receiving wearing and tearing, taking place the corrosion.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the docking frame of the present invention;

FIG. 3 is a schematic view of the slide rail structure of the present invention;

FIG. 4 is an enlarged view of the part A structure of the present invention;

fig. 5 is an enlarged view of the structure of part B of the present invention.

In the figure: 1. a support frame; 2. a current transformer; 3. a discharge gap; 4. a lightning arrester; 5. a movable contact switch; 6. a base; 7. inserting plates; 8. butting the convex plates; 9. butting the concave plates; 10. a docking frame; 11. a first bearing housing; 12. a T-shaped rod; 13. a through groove; 14. a slide rail; 15. a slider; 16. an adjusting plate; 17. a threaded rod; 18. a bearing; 19. a handle; 20. a transverse plate; 21. a screw rod; 22. an internal threaded barrel; 23. a second bearing housing; 24. a wear pad; 25. a torsion spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a transformer neutral gap grounding arrangement comprising: the device comprises a supporting frame 1, a current transformer 2, a discharge gap 3 and a lightning arrester 4;

the top of the supporting frame 1 is connected with a current transformer 2, and the supporting frame 1 is used as a bearing foundation, the current transformer 2 is provided with a discharge gap 3, the top of the supporting frame 1 is provided with an arrester 4, one side of the arrester 4 is connected with a movable contact switch 5, a base 6 is arranged on the lower side of the arrester 4, a plug board 7 is arranged on the lower side of the base 6, one side of the plug board 7 is connected with a butt convex board 8, the butt convex board 8 is clamped and connected in a butt concave board 9, the butt concave board 9 is connected on the inner side wall of a butt frame 10, and the butt frame 10 is connected on the top of the supporting frame 1.

The outer side of the butt joint frame 10 is connected with a first bearing seat 11, a T-shaped rod 12 is connected in the first bearing seat 11, the T-shaped rod 12 is connected in a through groove 13 in a penetrating mode, the through groove 13 is formed in the base 6, one end of a torsion spring 25 is connected above the first bearing seat 11, and the other end of the torsion spring 25 is connected to the T-shaped rod 12. First bearing frame 11, T type pole 12 and torsional spring 25 constitute rotatory reset structure, and T type pole 12 tip length is greater than logical groove 13 inside length, and T type pole 12 tip length is less than logical groove 13 inside width, make T type pole 12 can wear out from leading to groove 13 after rotatory, and can' T wear out again from leading to groove 13 after reseing, pass logical groove 13 through rotatory T type pole 12, and reset under the effect of torsional spring 25, can install lightning arrester 4 in carriage 1 top, when needs are dismantled, it can to rotate T type pole 12 once more, and then be convenient for the installation dismantle lightning arrester 4.

Be connected with slide rail 14 on the 1 inside wall of carriage, sliding connection has slider 15 in slide rail 14, and slider 15 one side is connected with regulating plate 16, and regulating plate 16 connects in current transformer 2 below, restricts regulating plate 16, makes regulating plate 16 more stable when removing. Adjusting plate 16 threaded connection has threaded rod 17, and threaded rod 17 one end is connected with bearing 18, and bearing 18 is connected on the carriage 1 inner wall, and handle 19, through connection are in carriage 1 one side, and handle 19 one end is connected at the threaded rod 17 other end. Slide rail 14, slider 15, regulating plate 16, threaded rod 17, bearing 18 and handle 19 constitute the position control structure, and the length of slide rail 14 equals with the inside length of carriage 1, make regulating plate 16 in the within range of removing, be restricted by slide rail 14 and slider 15 always, through rotatory threaded rod 17, can drive regulating plate 16 and remove, and then drive current transformer 2 and remove, thereby can adjust the distance between the clearance 3 that discharges, make the clearance 3 that discharges can adapt to the demand under the different actual conditions.

The outer side of the support frame 1 is connected with a transverse plate 20, a screw rod 21 is connected below the transverse plate 20, an internal thread cylinder 22 is connected on the screw rod 21 in a threaded manner, the internal thread cylinder 22 is connected in a second bearing seat 23, one side of the second bearing seat 23 is connected with a wear-resistant pad 24, and the wear-resistant pad 24 is connected below the support frame 1. The inside degree of depth of an internal thread section of thick bamboo 22 is less than the height of an internal thread section of thick bamboo 22, and the section area of overlooking of wearing pad 24 is greater than the section area of overlooking of carriage 1, makes wearing pad 24 can cover in carriage 1 bottom completely, and then can carry out effectual protection to carriage 1, through installing wearing pad 24 additional in carriage 1 bottom, makes carriage 1 can not direct and ground contact, and then prevents that carriage 1 bottom from receiving wearing and tearing.

The working principle is as follows: as shown in fig. 1 to 5, when using the transformer neutral point gap grounding device, the device is simply understood, firstly, before installation, the wear-resistant pad 24 is covered under the supporting frame 1, and the internal thread cylinder 22 is aligned with the end of the screw rod 21, then, the internal thread cylinder 22 is rotated, and the internal thread cylinder 22 is connected with the screw rod 21 by screw thread while rotating until the wear-resistant pad 24 is attached to the lower part of the supporting frame 1, so that the wear-resistant pad 24 is installed under the supporting frame 1, when installing the supporting frame 1, the wear-resistant pad 24 is not directly contacted with the installation surface, and further the bottom of the supporting frame 1 is prevented from being worn and rusted, secondly, the inserting plate 7 at the bottom of the lightning arrester 4 is inserted into the abutting frame 10, while being inserted, the six pairs of abutting convex plates 8 are simultaneously clamped into the six pairs of abutting concave plates 9 from top to bottom, and by the abutting convex plates 8 and the abutting concave plates 9, the inserting plate 7 can be limited, the inserting plate 7 is prevented from shaking in the butt joint frame 10, the lightning arrester 4 is further prevented from shaking, when the butt joint convex plate 8 is not completely clamped into the butt joint concave plate 9, the T-shaped rod 12 is rotated, meanwhile, the torsion spring 25 is twisted until the end part of the T-shaped rod 12 can penetrate through the through groove 13, when the butt joint convex plate 8 is completely clamped into the butt joint concave plate 9, the end part of the T-shaped rod 12 just penetrates through the through groove 13, the T-shaped rod 12 and the T-shaped rod 12 are loosened, self-reset is achieved under the action of the torsion spring 25, the torsion spring abuts against the upper portion of the base 6, the lightning arrester 4 is further installed above the supporting frame 1, when disassembly is needed, the T-shaped rod 12 only needs to be rotated again, the T-shaped rod 12 can penetrate through the through groove 13, the lightning arrester 4 can be removed, finally, after the integral assembly is completed, the handle 19 is rotated, and the threaded rod 17 is driven to rotate by the handle 19, because threaded rod 17 and regulating plate 16 threaded connection, and regulating plate 16 passes through slider 15 and slide rail 14 sliding connection of both sides, when threaded rod 17 was rotatory, regulating plate 16 can be along the inside removal of carriage 1, and then drive current transformer 2 and remove, thereby can adjust the interval of discharge gap 3 according to actual demand, when taking place the thunderbolt, arrester 4 takes place the action through movable contact switch 5, discharge gap 3 is punctured and is short-circuited arrester 4, to the long-time power frequency excessive pressure that arrester 4 can not bear, discharge gap 3 sustainable discharge, short-circuit arrester 4, play good guard action to arrester 4, the content that does not do not describe in detail in this description belongs to the prior art that skilled person in the art is known.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions of the features of the embodiments described above, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A transformer neutral gap grounding apparatus comprising: the lightning arrester comprises a supporting frame (1), a current transformer (2), a discharge gap (3) and a lightning arrester (4), and is characterized in that;

a current transformer (2) is connected above the supporting frame (1), a discharge gap (3) is arranged on the current transformer (2), a lightning arrester (4) is arranged above the supporting frame (1), and one side of the lightning arrester (4) is connected with a movable contact switch (5);

base (6), fixed connection be in arrester (4) below, base (6) below is connected with picture peg (7), picture peg (7) one side is connected with butt joint flange (8), butt joint flange (8) block is connected in butt joint concave plate (9), butt joint concave plate (9) are connected on butt joint frame (10) inside wall, butt joint frame (10) are connected in carriage (1) top.

2. A transformer neutral gap grounding device according to claim 1, wherein: a first bearing seat (11) is connected to the outer side of the butt joint frame (10), a T-shaped rod (12) is connected into the first bearing seat (11), the T-shaped rod (12) is connected into a through groove (13) in a penetrating mode, and the through groove (13) is formed in the base (6);

and one end of the torsion spring (25) is connected above the first bearing seat (11), and the other end of the torsion spring (25) is connected to the T-shaped rod (12).

3. A transformer neutral gap grounding arrangement according to claim 2, wherein: the first bearing seat (11), the T-shaped rod (12) and the torsion spring (25) form a rotary reset structure, the length of the end part of the T-shaped rod (12) is larger than the length of the inside of the through groove (13), and the length of the end part of the T-shaped rod (12) is smaller than the width of the inside of the through groove (13).

4. A transformer neutral gap grounding device according to claim 1, wherein: be connected with slide rail (14) on carriage (1) inside wall, sliding connection has slider (15) in slide rail (14), slider (15) one side is connected with regulating plate (16), regulating plate (16) are connected in current transformer (2) below.

5. The transformer neutral point gap grounding device of claim 4, wherein: a threaded rod (17) is connected with the adjusting plate (16) through internal threads, one end of the threaded rod (17) is connected with a bearing (18), and the bearing (18) is connected to the inner wall of the supporting frame (1);

and the handle (19) is connected to one side of the support frame (1) in a penetrating manner, and one end of the handle (19) is connected to the other end of the threaded rod (17).

6. The transformer neutral point gap grounding device of claim 5, wherein: slide rail (14), slider (15), regulating plate (16), threaded rod (17), bearing (18) and handle (19) constitute the position control structure, and the length of slide rail (14) equals with carriage (1) inside length.

7. A transformer neutral gap grounding arrangement according to claim 1, wherein: the utility model discloses a wear-resisting bearing frame, including braced frame (1), diaphragm (20) below is connected with lead screw (21), threaded connection has an internal thread section of thick bamboo (22) on lead screw (21), an internal thread section of thick bamboo (22) are connected in second bearing seat (23), second bearing seat (23) one side is connected with abrasion pad (24), abrasion pad (24) are connected in braced frame (1) below.

8. A transformer neutral gap grounding arrangement according to claim 7, wherein: the inner depth of the internal thread cylinder (22) is smaller than the height of the internal thread cylinder (22), and the overlook cross-sectional area of the wear-resisting pad (24) is larger than the overlook cross-sectional area of the support frame (1).