CN221633413U - Complete set of protection device for neutral point of transformer - Google Patents
Complete set of protection device for neutral point of transformer Download PDFInfo
- Publication number
- CN221633413U CN221633413U CN202323070425.3U CN202323070425U CN221633413U CN 221633413 U CN221633413 U CN 221633413U CN 202323070425 U CN202323070425 U CN 202323070425U CN 221633413 U CN221633413 U CN 221633413U
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- transformer
- neutral point
- mounting base
- discharge gap
- lightning arrester
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- 230000007935 neutral effect Effects 0.000 title claims abstract description 43
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000001012 protector Effects 0.000 claims 5
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a complete set of protection device for a neutral point of a transformer, which relates to the technical field of power equipment and comprises a mounting column, wherein one end of the mounting column is connected with the ground through a fastening device; the adjustable mounting base is horizontally arranged at the other end of the mounting column and is used for adjusting the form of the adjustable mounting base to change the occupied space; the current transformer is provided with a transformer connecting pipe, a discharge gap rod is arranged between the transformer connecting pipe and the lightning arrester, one of the discharge gap rods is connected with the transformer connecting pipe through threads, and the other discharge gap rod is fixedly arranged on the lightning arrester; the neutral point isolating switch is provided with a wiring terminal board which is respectively connected with a neutral point of the transformer and the lightning arrester through wires; effectively reduce its occupation space, can satisfy electric safety distance simultaneously under the limited circumstances of indoor space moreover, be convenient for set up according to actual scene, reinforcing device's suitability and practicality.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to a complete set of protection device for a neutral point of a transformer.
Background
The transformer neutral point gap grounding protection complete set adopts complete set equipment integrating an isolating switch, a zinc oxide arrester, a discharge gap, a current transformer and other electrical equipment, is used for neutral points of 110KV and 220KV power transformers, and protects the transformer neutral point insulation from damage of lightning overvoltage and power frequency transient overvoltage by utilizing the characteristics of discharge time delay of gap discharge and no discharge time delay of a metal oxide arrester.
According to engineering requirements, the transformer neutral point gap grounding protection complete set of device generally adopts a protection mode of parallel operation of an isolating switch, a zinc oxide arrester, a discharge gap and a current transformer, is arranged in a row in appearance, occupies a large area, and the transformer arranged indoors, because of limited space, the existing transformer neutral point complete set of protection device cannot completely meet indoor use requirements.
Based on this, it is necessary to propose a complete protection device for the neutral point of a transformer in order to solve or at least alleviate the above drawbacks.
Disclosure of utility model
The utility model mainly aims to provide a complete set protection device for a neutral point of a transformer, and aims to solve the technical problem that the existing complete set protection device for the neutral point clearance grounding of the transformer is easy to cause larger occupied area due to the fact that the complete set protection device adopts a parallel operation protection mode in the installation and layout process.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
A transformer neutral point complete protection device, comprising:
the mounting column is connected with the ground through a fastening device at one end;
The adjustable mounting base is horizontally arranged at the other end of the mounting column and is used for adjusting the form of the adjustable mounting base to change the size of occupied space;
The current transformer is provided with a transformer connecting pipe, a discharge gap rod is arranged between the transformer connecting pipe and the lightning arrester, one of the discharge gap rods is in threaded connection with the transformer connecting pipe, and the other of the discharge gap rods is fixedly arranged on the lightning arrester;
The neutral point isolating switch is provided with a wiring terminal board which is respectively connected with the neutral point of the transformer and the lightning arrester through wires.
Preferably, the adjustable mounting base comprises a first mounting base body, a second mounting base body and an adjusting piece, wherein a notch is formed in one end of the first mounting base body, and the second mounting base body is locked on the first mounting base body through the adjusting piece.
Preferably, the second mounting seat body is provided with an adjusting groove for the displacement of the adjusting piece.
Preferably, the adjusting piece comprises a rotating shaft and a locking block, the rotating shaft is rotatably inserted into the opening, the locking block is sleeved on the shaft body of the rotating shaft, and the locking block is provided with an adjusting groove in an assembling mode.
Preferably, the adjusting member includes a counter bore formed in the first mounting seat body, a locking bolt inserted into the counter bore, and a nut for locking the locking bolt to the second mounting seat body, and a bolt body portion of the locking bolt is accommodated in the adjusting groove.
Preferably, the discharge gap of the discharge gap rod is set to be 90mm-150mm.
Preferably, an operation cabinet is arranged on the mounting column, an operation mechanism is arranged in the operation cabinet, and the operation mechanism is electrically connected with the neutral point isolating switch.
Preferably, the mounting column is provided with an on-line monitor connected with the lightning arrester.
The utility model has the following beneficial effects:
The lightning arrester, the current transformer and the neutral point isolating switch form a compact whole through the adjustable mounting base, so that the overall length of the transformer neutral point complete protection device can be greatly shortened, the occupied space of the transformer neutral point complete protection device is reduced, and the enough electric safety distance can be met under the condition of limited indoor space.
Secondly, can realize the switching of multiple state through the mount pad with adjustable, be convenient for set up according to actual scene, reinforcing device holistic suitability and practicality.
In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic front view of the overall structure of the present utility model;
FIG. 2 is a schematic view of the "G-direction" structure of FIG. 1;
FIG. 3 is a schematic top view of the overall structure of the present utility model;
FIG. 4 is a schematic view of an adjustable mounting base structure of the present utility model;
FIG. 5 is a schematic view of an explosion structure of an adjustable mounting base in the present utility model;
FIG. 6 is a schematic view of an adjustable mounting base structure in another embodiment;
Fig. 7 is a schematic view of an exploded view of an adjustable mounting base in another embodiment.
Description of the drawings: 1. a neutral point isolation switch; 2. a wire; 3. a lightning arrester; 4. an adjustable mounting base; 5. a discharge gap rod; 6. a transformer connecting tube; 7. a current transformer; 8. a transformer grounding bar; 9. a copper bar member; 10. the isolating switch is grounded; 11. an on-line monitor; 12. a mounting column; 13. an operation cabinet;
100'/100, a first mount body; 101'/101, opening; 102 "/102, second mount body; 103 "/103, regulating groove; 104. a gear shifting shaft; 104', locking bolts; 105. a locking block; 106. and (5) sinking the holes.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The transformer neutral point complete protection device as shown in fig. 1 comprises a mounting column 12, an adjustable mounting base 4, a lightning arrester 3, a current transformer 7 and a neutral point isolating switch 1: the lightning arrester 3, the current transformer 7 and the neutral point isolating switch 1 are formed into a compact whole through the adjustable mounting base, so that the overall length of the transformer neutral point complete protection device can be greatly shortened, the occupied space is reduced, and the enough electric safety distance can be met under the condition of limited indoor space.
Specifically, the protection device comprises a mounting column 12, wherein one end of the mounting column 12 is connected with the ground through a fastening device;
The lightning arrester 3 and the current transformer 7 are arranged on the adjustable mounting base 4, the current transformer 7 is provided with a transformer connecting pipe 6, a discharge gap rod 5 is arranged between the transformer connecting pipe 6 and the lightning arrester 3, one of the discharge gap rods 5 is in threaded connection with the transformer connecting pipe 6, and the other is fixedly arranged on the lightning arrester 3; the discharge gap of the discharge gap rod 5 is set to be 90mm-150mm;
the neutral point isolating switch 1 is provided with a wiring terminal board which is respectively connected with a neutral point of the transformer and the lightning arrester 3 through wires 2.
In order to describe how the above-mentioned effects are achieved in particular, the protective device is described in a development,
In this embodiment, the mounting post 12 is a steel post, and secondly, in order to simplify the structural complexity of the device, the fastening device is an anchor bolt, so that those skilled in the art can choose the fastening device according to actual requirements to ensure that the construction technical requirements can be met;
It should be noted that, in this embodiment, the lightning arrester 3, the current transformer 7 and the neutral point isolation switch 1 are respectively disposed on the adjustable mounting base 4, the adjustable mounting base 4 is horizontally disposed at the other end of the mounting post 12, and the adjustable mounting base 4 is used for adjusting its own form to change the occupied space;
Specifically, how the adjustable mounting base 4 changes the shape, in this embodiment, referring to fig. 4-6, the adjustable mounting base 4 includes a first mounting base body 100/100 ", a second mounting base body 102/102", and an adjusting member, one end of the first mounting base body 100/100 "is provided with a notch 101/101", the second mounting base body 102/102 "is locked to the notch 101/101" of the first mounting base body 100/100 "by the adjusting member, and the second mounting base body 102/102" is provided with an adjusting groove 103/103 "for the displacement of the adjusting member;
In order to avoid ambiguity during description, in the following description, the specific drawings and corresponding reference numerals are combined to describe, in this embodiment, referring to fig. 4-5, the adjusting member includes a rotating shaft 104 and a locking block 105, the rotating shaft 104 is rotatably inserted into the opening 101, the locking block 105 is sleeved on the shaft body of the rotating shaft 104, and the locking block 105 is provided with an adjusting slot 103, and in combination with a specific working scenario, when the state needs to be changed, the second mounting seat body 102 is turned around the rotating shaft 104 by pulling, but due to the structural characteristics, the turning angle is between-90 ° and 90 ° with fig. 4 as a starting point state, after the turning is completed, at this time, the adjustable mounting seat 4 is in an "L-shape", but when the actual requirement is in a "T-shape", the second mounting seat body 102 is pushed, so that at the same time, the locking block 105 is in a working state capable of sliding only in the adjusting slot 103, thereby achieving the state switching.
In another embodiment, as can be seen with reference to fig. 6, the adjusting member includes a counter bore 106 formed on the first mounting seat body 100 ", a locking bolt 104" inserted into the counter bore 106, and a nut for locking the locking bolt 104 "to the second mounting seat body 102", wherein a bolt portion of the locking bolt 104 "is accommodated in the adjusting groove 103", and the structural difference between the adjusting member in this embodiment and the adjusting member in this embodiment of the present application is as follows (meanwhile, for distinguishing, this embodiment is named embodiment 2, and this embodiment of the present application is named embodiment 1):
(1) The arrangement of the notch 101 in embodiment 1 is different from that of the notch 101 "in embodiment 2, in embodiment 1, the notch 101 does not extend to the lower end surface of the first mount body 10, so as to form a fork-shaped structure, and in embodiment 2, the locking bolt 104" is provided to facilitate locking and unlocking, so that the notch 101 "needs to penetrate through the lower end of the first mount body 100".
(2) The thickness of the second mount body 102/102 "itself varies;
(3) The manner in which the second mount body 102/102 "is adjusted is different.
Specifically, in embodiment 1, when the second mount body 102 is adjusted, there is no need to perform additional unlocking and locking operations, but in embodiment 2, the state retention stability of embodiment 2 is higher than that of embodiment 1 after the adjustment is completed, compared with the case where the second mount body is required.
Based on some of the above expressions, it is possible for a person skilled in the art to choose the arrangement of the corresponding adjusting elements according to the weight of the lightning conductor 3 and the current transformer 7 itself to be arranged as desired.
Furthermore, in order to monitor the number of discharges and leakage current of the lightning arrester 3, the mounting post 12 is provided with an on-line monitor 11 connected to the lightning arrester 3.
Further, in order to ensure the safety of the equipment in use, the current transformer 7 is electrically connected with a transformer grounding bar 8, the neutral point isolating switch 1 is electrically connected with a isolating switch grounding bar 10, the lightning arrester 3 and the prior monitor 11 are connected by a copper bar 9, as can be seen from fig. 2, the copper bar 9 is disposed on the mounting post 12, one end of the copper bar 9 is connected to the lightning arrester 3 by a conductive wire, and the other end is connected to the on-line monitor 11 by a conductive wire, and the specific arrangement of the arrangement is conventional, and there are many similar existing technologies on the market, so that the description will be omitted herein.
Further, an operation cabinet 13 is disposed on the mounting post 12, an operation mechanism is disposed in the operation cabinet 13, and the operation mechanism is electrically connected with the neutral point isolating switch 1, and in particular, the manner and principle of setting the operation mechanism refer to chinese patent No. 2020106915796, which is a complete set protection device for a neutral point of a transformer.
The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. A transformer neutral point complete protection device, comprising:
the mounting column is connected with the ground through a fastening device at one end;
The adjustable mounting base is horizontally arranged at the other end of the mounting column and is used for adjusting the form of the adjustable mounting base to change the size of occupied space;
The current transformer is provided with a transformer connecting pipe, a discharge gap rod is arranged between the transformer connecting pipe and the lightning arrester, one of the discharge gap rods is in threaded connection with the transformer connecting pipe, and the other of the discharge gap rods is fixedly arranged on the lightning arrester;
The neutral point isolating switch is provided with a wiring terminal board which is respectively connected with the neutral point of the transformer and the lightning arrester through wires.
2. The transformer neutral point complete protector according to claim 1, wherein the adjustable mounting base comprises a first mounting base body, a second mounting base body and an adjusting piece, wherein a notch is formed in one end of the first mounting base body, and the second mounting base body is locked on the first mounting base body through the adjusting piece.
3. The transformer neutral point complete protector according to claim 2, wherein the second mounting base body is provided with an adjusting groove for the displacement of the adjusting member.
4. The transformer neutral point complete protection device according to claim 3, wherein the adjusting piece comprises a rotating shaft and a locking block, the rotating shaft is rotatably inserted into the opening, the locking block is sleeved on a shaft body of the rotating shaft, and the locking block is assembled in an adjusting groove.
5. A transformer neutral point complete protector according to claim 3, wherein the regulating member comprises a counter bore formed in the first mounting base body, a lock bolt inserted into the counter bore, and a nut for locking the lock bolt to the second mounting base body, and
The bolt body part of the locking bolt is accommodated in the adjusting groove.
6. A transformer neutral point complete protector according to claim 2, characterized in that the discharge gap of the discharge gap bar is set to 90-150 mm.
7. The transformer neutral point complete protection device according to claim 1, wherein an operation cabinet is arranged on the installation column, an operation mechanism is arranged in the operation cabinet, and the operation mechanism is electrically connected with the neutral point isolating switch.
8. The transformer neutral point complete protector according to claim 1, wherein the mounting post is provided with an on-line monitor connected with the lightning arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323070425.3U CN221633413U (en) | 2023-11-14 | 2023-11-14 | Complete set of protection device for neutral point of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323070425.3U CN221633413U (en) | 2023-11-14 | 2023-11-14 | Complete set of protection device for neutral point of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221633413U true CN221633413U (en) | 2024-08-30 |
Family
ID=92494278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323070425.3U Active CN221633413U (en) | 2023-11-14 | 2023-11-14 | Complete set of protection device for neutral point of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221633413U (en) |
-
2023
- 2023-11-14 CN CN202323070425.3U patent/CN221633413U/en active Active
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