CN214314532U

CN214314532U - Novel transformer neutral point gap grounding protection device

Info

Publication number: CN214314532U
Application number: CN202120322767.1U
Authority: CN
Inventors: 史琳燕
Original assignee: Baoding Houpu Electromechanical Equipment Manufacturing Co ltd
Current assignee: Baoding Houpu Electromechanical Equipment Manufacturing Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-09-28
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses a novel transformer neutral point clearance earth protection device, including prefabricated post, the top of prefabricated post is equipped with the fixed plate, the top and the link of fixed plate are connected, the top of link is equipped with the current transformer of adjacent setting in proper order, arrester and high-voltage isolator, the top of high-voltage isolator is passed through the connecting rod and is connected with the top of arrester, high-voltage isolator's adjustment end and transfer line swing joint, the end and the fly leaf of transfer line are connected, be equipped with the through-hole on the fly leaf, be equipped with the regulation pole of vertical setting in the through-hole, the end and the hand operation case of adjusting the pole are connected, the hand operation case passes through fixed subassembly and prefabricated column connection. The utility model adopts the above structure transformer neutral point clearance ground protection device, the use height of convenient adjustment hand operation case can adapt to the hand operation case of installing different specification and dimension simultaneously with the transformer of cooperation co-altitude not.

Description

Novel transformer neutral point gap grounding protection device

Technical Field

The utility model relates to a transformer work auxiliary device technical field especially relates to a novel transformer neutral point clearance ground protection device.

Background

110kV and 220kV are main voltage levels of a power supply network, a neutral point generally adopts a direct grounding mode due to high voltage, a neutral point is not grounded in order to limit single-phase short-circuit current due to requirements on relay protection setting configuration, communication interference prevention and the like, in the operating mode, neutral point overvoltage can be caused due to lightning stroke, single-phase grounding short-circuit fault and the like, and most transformers are in graded insulation, so that the overvoltage threatens the insulation of the neutral point greatly, and a protection device must be arranged on the transformers to prevent accidents.

Traditional transformer neutral point clearance ground protection device when installing, because the cement post is highly fixed, and protection device need dock with the transformer, so the control box of its bottom highly is difficult to control at the height that operating personnel can operate, leads to operating personnel installation and debugging inconvenient, so proposes a novel transformer neutral point clearance ground protection device and solves the problem that the aforesaid was proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel transformer neutral point clearance ground connection protection device, the use height of convenient adjustment hand operation case can adapt to the hand operation case of installing different specification and dimension simultaneously with the transformer of cooperation co-altitude.

In order to achieve the above object, the utility model provides a novel transformer neutral point gap ground protection device, which comprises a prefabricated column, wherein the top of the prefabricated column is provided with a fixed plate, the top of the fixed plate is connected with a connecting frame, the top of the connecting frame is sequentially provided with a current transformer, a lightning arrester and a high-voltage isolating switch which are adjacently arranged, the top of the current transformer is provided with a guide column, the top end of the guide column is connected with a first gap ball, the top end of the lightning arrester is provided with a second gap ball which is correspondingly arranged with the first gap ball, the top of the high-voltage isolating switch is connected with the top end of the lightning arrester through a connecting rod, the adjusting end of the high-voltage isolating switch is movably connected with a transmission rod, the tail end of the transmission rod is connected with a movable plate, the movable plate is provided with a through hole, a vertically arranged adjusting rod is arranged in the through hole, and the tail end of the adjusting rod is connected with a hand-operated box, the manual operation box is connected with the prefabricated column through a fixing assembly;

the fixed subassembly include with prefabricated post structure assorted first semicircle staple bolt and second semicircle staple bolt, be equipped with the connecting plate on the first semicircle staple bolt, be equipped with the logical groove that the symmetry set up on the connecting plate, it is equipped with accommodate the lead screw to lead to the inslot, accommodate the lead screw wears out the one end of fixed plate is equipped with the knob, be equipped with on the accommodate the lead screw and be located lead to the regulating block of inslot, be equipped with the fixed orifices on the regulating block, the fixed orifices with be located connecting piece structure phase-match on the manual operation case lateral wall.

Preferably, the current transformer and the lightning arrester are electrically connected with a measuring capacitor positioned at the top of the connecting frame.

Preferably, the prefabricated column is internally provided with a grounding wire electrically connected with the lightning arrester.

Preferably, the adjusting rod is provided with an upper nut and a lower nut which are respectively positioned on two sides of the movable plate, and a compression spring is further arranged between the lower nut and the movable plate.

Therefore, the utility model adopts the above structure novel transformer neutral point clearance ground connection protection device, the use height of convenient adjustment hand operation case can adapt to the hand operation case of installing different specification and dimension simultaneously with the transformer of cooperation co-altitude not.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the novel transformer neutral point gap ground protection device of the present invention;

fig. 2 is a schematic diagram of an embodiment of a connection plate in the novel transformer neutral point gap ground protection device.

Reference numerals

1. Prefabricating a column; 2. a fixing plate; 3. a connecting frame; 4. a current transformer; 5. a lightning arrester; 6. a high voltage isolation switch; 7. a guide post; 8. a first gap ball; 9. a second gap ball; 10. a connecting rod; 11. a transmission rod; 12. a movable plate; 13. adjusting a rod; 14. screwing a nut; 15. a lower nut; 16. a compression spring; 17. manually operating the box; 18. a first semicircular hoop; 19. a second semicircular hoop; 20. a connecting plate; 21. a through groove; 22. adjusting the screw rod; 23. an adjusting knob; 24. an adjusting block; 25. and (7) fixing holes.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 is the utility model discloses the schematic diagram of transformer neutral point clearance ground protection device embodiment, fig. 2 is the utility model discloses the schematic diagram of the embodiment of connecting plate among the transformer neutral point clearance ground protection device, as shown in the figure, a novel transformer neutral point clearance ground protection device, including prefabricated post 1, the top of prefabricated post 1 is equipped with fixed plate 2, and the top and the link 3 of fixed plate 2 are connected, and the top of link 3 is equipped with current transformer 4, arrester 5 and the high voltage isolator 6 of adjacent setting in proper order. Current transformer 4 and arrester 5 all are connected with the measurement electric capacity electricity that is located link 3 top, and current transformer 4's top is equipped with guide pillar 7, and the top and the first clearance ball 8 of guide pillar 7 are connected, and the top of arrester 5 is equipped with the second clearance ball 9 that corresponds the setting with first clearance ball 8, and the inside of prefabricated post 1 is equipped with the earth connection of being connected with arrester 5 electricity.

The top of the high-voltage isolating switch 6 is connected with the top end of the lightning arrester 5 through a connecting rod 10, and the adjusting end of the high-voltage isolating switch 6 is movably connected with a transmission rod 11. The tail end of the transmission rod 11 is connected with a movable plate 12, a through hole is arranged on the movable plate 12, and a vertically arranged adjusting rod 13 is arranged in the through hole. The adjusting rod 13 is provided with an upper nut 14 and a lower nut 15 respectively located at both sides of the movable plate 12, and the upper nut 14 and the lower nut 15 are used for fixing the adjusting rod 13 on the movable plate 12. A compression spring 16 is further arranged between the lower nut 15 and the movable plate 12, and the compression spring 16 is used for realizing the flexible connection between the adjusting rod 13 and the movable plate 12, thereby playing the roles of shock resistance and stability. The tail end of the adjusting rod 13 is connected with the hand box 17, and the fixed position of the adjusting rod 13 on the movable plate 12 is changed, so that the fixed height of the hand box 17 can be adjusted.

The hand-operated box 17 is connected with the prefabricated column 1 through a fixing component, the fixing component comprises a first semicircular hoop 18 and a second semicircular hoop 19 which are matched with the structure of the prefabricated column 1, and the first hoop and the second hoop are clamped and fixed on the prefabricated column 1 and can play a supporting role for the hand-operated box 17. Be equipped with connecting plate 20 on the first semicircle staple bolt 18, be equipped with the logical groove 21 that the symmetry set up on connecting plate 20, be equipped with accommodate the lead screw 22 in the logical groove 21, the one end that accommodate the lead screw 22 wore out fixed plate 2 is equipped with adjusting knob 23, is equipped with the regulating block 24 that is located logical groove 21 on the accommodate the lead screw 22, and rotatory adjusting knob 23 can change the position of regulating block 24 in logical groove 21 to the hand operation case 17 of different size specifications is connected in the adaptation. The adjusting block 24 is provided with a fixing hole 25, the fixing hole 25 is matched with a connecting piece structure on the outer side wall of the hand operation box 17, the connecting piece penetrates through the fixing hole 25 and then is fixed through a nut, and the hand operation box 17 is fixed on the adjusting block 24.

When the portable box type electric power distribution box is used, the prefabricated column 1 is fixed on the ground, the connecting frame 3 provided with the current transformer 4, the lightning arrester 5 and the high-voltage isolating switch 6 is fixed on the fixing plate 2 at the top of the prefabricated column 1, the upper nut 14 and the lower nut 15 are unscrewed, the position of the adjusting rod 13 on the movable plate 12 is changed until the portable box 17 is moved to a required height, and the upper nut 14 and the lower nut 15 are screwed to fix the height of the portable box 17. The position of the adjusting block 24 in the through groove 21 is changed according to the size specification of the hand-operated box 17, the connecting plate 20 is fixed on the prefabricated column 1 by using the first semicircular hoop 18 and the second semicircular hoop 19, at the moment, a connecting piece on the hand-operated box 17 penetrates through a fixing hole 25 on the adjusting block 24 and then is fixed by using a nut, the connection between the hand-operated box 17 and the connecting plate 20 is realized, the stability of the hand-operated box 17 is improved, and finally, the guide column 7 is connected with a transformer through a cable.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a novel transformer neutral point clearance ground connection protection device, includes prefabricated post, the top of prefabricated post is equipped with the fixed plate, the top and the link of fixed plate are connected, the top of link is equipped with current transformer, arrester and the high voltage isolator of adjacent setting in proper order, current transformer's top is equipped with the guide pillar, the top and the first clearance ball of guide pillar are connected, the top of arrester be equipped with the first clearance ball corresponds the second clearance ball that sets up, its characterized in that: the top of the high-voltage isolating switch is connected with the top end of the lightning arrester through a connecting rod, the adjusting end of the high-voltage isolating switch is movably connected with a transmission rod, the tail end of the transmission rod is connected with a movable plate, a through hole is formed in the movable plate, an adjusting rod which is vertically arranged is arranged in the through hole, the tail end of the adjusting rod is connected with a manual operation box, and the manual operation box is connected with the prefabricated column through a fixing assembly;

2. The novel transformer neutral point gap grounding protection device according to claim 1, characterized in that: the current transformer and the lightning arrester are electrically connected with a measuring capacitor positioned at the top of the connecting frame.

3. The novel transformer neutral point gap grounding protection device according to claim 2, characterized in that: and a grounding wire electrically connected with the lightning arrester is arranged in the prefabricated column.

4. The novel transformer neutral point gap grounding protection device according to claim 3, characterized in that: the adjusting rod is provided with an upper nut and a lower nut which are respectively positioned on two sides of the movable plate, and a compression spring is further arranged between the lower nut and the movable plate.