CN218214887U - 10kV transformer lightning protection device - Google Patents
10kV transformer lightning protection device Download PDFInfo
- Publication number
- CN218214887U CN218214887U CN202221484682.4U CN202221484682U CN218214887U CN 218214887 U CN218214887 U CN 218214887U CN 202221484682 U CN202221484682 U CN 202221484682U CN 218214887 U CN218214887 U CN 218214887U
- Authority
- CN
- China
- Prior art keywords
- lightning
- transformer
- arrester
- heat dissipation
- lightning arrester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model provides a 10kV transformer lightning protection device, include: the upper mounting cavity, the left lightning arrester, the right lightning arrester, the mounting plate and the decoupler are arranged in the middle of the upper mounting cavity; the transformer comprises an upper mounting cavity, a left heat dissipation frame, a right heat dissipation frame, a plurality of groups of partition plates and a top plate, wherein the upper mounting cavity is arranged at the upper part of the transformer; the left lightning arrester is arranged at the left end of the upper end face of the top plate; the right lightning arrester is arranged at the right end of the upper end face of the top plate; the mounting plate is fixed in the middle of the upper mounting cavity; the decoupler is mounted on the front side of the mounting plate. The utility model discloses installation decoupler between two sets of arresters is installed additional to the leading-out terminal of well transformer, and after transformer high pressure side circuit suffered the thunderbolt, through the pressure release of two sets of arresters, in addition the current-limiting action of decoupler can reduce the amplitude of thunder and lightning invasion ripples by a wide margin to prevent that the transformer from suffering the damage of thunderbolt.
Description
Technical Field
The utility model relates to a transformer technical field, concretely relates to 10kV transformer lightning protection device.
Background
The transformer is basic equipment for power transmission and distribution, and is widely applied to the fields of industry, agriculture, traffic, urban communities and the like; the transformer loss accounts for about 40% of the power loss of power transmission and distribution, and has great energy-saving potential. The existing lightning protection measures of the transformer generally adopt the mode that a group of lightning arresters are added at a line outlet end, but the transformer cannot be protected from being damaged by lightning under the condition of stronger lightning. Under the condition that 80% of lightning current is maximally shunted by an arrester on the existing transformer, the strong current still exceeds the bearing degree of the transformer, and the arrester at the moment has no protective effect on the transformer.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, a lightning protection device for a 10kV transformer is provided so as to solve the problem that the lightning arrester on the existing transformer cannot protect the transformer at the moment when the lightning arrester on the existing transformer still exceeds the bearing degree of the transformer under the condition of shunting 80% of lightning current to the maximum extent.
In order to realize the above-mentioned purpose, provide a 10kV transformer lightning protection device, include: the upper mounting cavity, the left lightning arrester, the right lightning arrester, the mounting plate and the decoupler;
the transformer comprises an upper mounting cavity, a left heat dissipation frame and a right heat dissipation frame, wherein the upper mounting cavity is arranged at the upper part of the transformer, the left end of the upper mounting cavity is provided with the left heat dissipation frame, the right end of the upper mounting cavity is provided with the right heat dissipation frame, a plurality of groups of partition plates are arranged in the left heat dissipation frame and the right heat dissipation frame, and the upper end of the upper mounting cavity is provided with a top plate;
the left lightning arrester is arranged at the left end of the upper end surface of the top plate;
the right lightning arrester is arranged at the right end of the upper end face of the top plate;
the mounting plate is fixed in the middle of the upper mounting cavity;
and the decoupler is arranged on the front side surface of the mounting plate.
Furthermore, the lower part of the left arrester is provided with a lightning rod lower core rod, the upper end and the lower end of the lightning rod lower core rod are sleeved with a group of upper pipe sleeves, the lower end of the upper pipe sleeve on the upper side and the upper end of the upper pipe sleeve on the lower side are provided with a group of upper springs, the front ends of the upper springs in each group are supported against the rear sides of a group of pressing plates, and a certain gap is formed between the upper pressing plate and the lower pressing plate.
Furthermore, the left arrester and the right arrester are bilaterally symmetrical about the center line of the upper mounting cavity, and the structure of the right arrester is consistent with that of the left arrester.
Furthermore, the upper and lower both ends of mounting panel all are provided with a set of connecting plate, and the connecting plate passes through fastening bolt to be fixed at the interior top of last installation cavity to the mounting panel is located the intermediate position between left arrester and the right arrester.
Furthermore, the left end of the decoupler is connected with a set of left connecting wire, the other end of the left connecting wire is in the middle of the lower core rod of the lightning rod, the right end of the decoupler is connected with a right connecting wire, the other end of the right connecting wire is connected in the middle of the lower core rod of the lightning rod under the right lightning rod, and the decoupler is electrically connected with the left lightning rod and the right lightning rod.
Furthermore, a rear heat transfer layer is arranged on the rear side face of the mounting plate, a rear heat dissipation aluminum plate is arranged on the rear side face of the rear heat transfer layer, heat dissipation fin groups are arranged on the left side face and the right side face of the rear heat dissipation aluminum plate, a groove is formed in the middle of each heat dissipation fin group, and a turbofan is mounted in the groove.
The beneficial effects of the utility model reside in that:
1. the transformer in the utility model adopts a 10kV transformer, the left lightning arrester and the right lightning arrester are respectively arranged on the outgoing line ends at the left side and the right side of the transformer, the left lightning arrester and the right lightning arrester are selected from first-grade zinc oxide lightning arresters, and the decoupler additionally arranged between the two sets of lightning arresters can prevent the transformer from being damaged by induced overvoltage generated when the lightning arresters suddenly discharge;
2. the arrangement of the decoupling device in the utility model plays a certain current limiting role, which can greatly reduce the amplitude of the thunder and lightning invasion wave and prevent the transformer from being damaged by the lightning stroke;
3. the utility model discloses the back heat transfer layer, back heat dissipation aluminum plate and the radiating fin group that well mounting panel trailing flank set up conveniently carry out the large tracts of land and expand the heat dissipation backward, simultaneously about turbofan, utilize wind-force to add thermal treatment with higher speed to it is too high to go up the installation intracavity temperature, sets up safer and more reliable.
Drawings
Fig. 1 is a schematic front view of an upper installation cavity of an embodiment of the present invention;
fig. 2 is a rear view schematically illustrating the upper mounting cavity of the embodiment of the present invention being unfolded;
fig. 3 is the utility model discloses lightning-arrest circuit structure schematic diagram of embodiment.
In the figure: 1. a transformer; 2. an upper mounting cavity; 20. a left heat dissipation frame; 21. a right heat dissipation frame; 22. A partition plate; 23. a top plate; 3. a left lightning arrester; 30. pipe sleeving; 31. an upper spring; 32. pressing a plate; 33. a lower core rod of the lightning rod; 4. a right lightning arrester; 5. mounting a plate; 50. a connecting plate; 51. Fastening a bolt; 52. a rear heat transfer layer; 53. a rear heat dissipation aluminum plate; 54. a heat radiation fin group; 55. A groove; 56. a turbo fan; 6. a decoupler; 60. a left connecting line; 61. and a right connecting line.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can be implemented or applied by other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.
Fig. 1 is the utility model discloses the front view schematic diagram that goes up the installation cavity and expand, fig. 2 are the utility model discloses the back view schematic diagram that goes up the installation cavity and expand and fig. 3 do the utility model discloses a lightning-arrest circuit structure schematic diagram.
Referring to fig. 1 to 3, the utility model provides a 10kV transformer lightning protection device, include: the upper installation cavity 2, the left lightning arrester 3, the right lightning arrester 4, the installation plate 5 and the decoupler 6; the upper installation cavity 2 is arranged at the upper part of the transformer 1, the left end of the upper installation cavity 2 is provided with a left heat dissipation frame 20, the right end of the upper installation cavity 2 is provided with a right heat dissipation frame 21, a plurality of groups of partition plates 22 are arranged in the left heat dissipation frame 20 and the right heat dissipation frame 21, and the upper end of the upper installation cavity 2 is provided with a top plate 23; the left lightning arrester 3 is arranged at the left end of the upper end surface of the top plate 23; the right lightning arrester 4 is arranged at the right end of the upper end face of the top plate 23; the mounting plate 5 is fixed in the middle of the upper mounting cavity 2; the decoupler 6 is mounted on the front side of the mounting plate 5.
In the embodiment, the lower part of the left arrester 3 is provided with a lightning rod lower core bar 33, the upper end and the lower end of the lightning rod lower core bar 33 are respectively sleeved with a group of upper pipe sleeves 30, the lower end of the upper pipe sleeve 30 on the upper side and the upper end of the upper pipe sleeve 30 on the lower side are respectively provided with a group of upper springs 31, the front ends of the upper springs 31 in each group are respectively pressed against the rear sides of a group of pressing plates 32, and a certain gap is formed between the upper pressing plate 32 and the lower pressing plate 32; the left lightning arrester 3 and the right lightning arrester 4 are bilaterally symmetrical about the center line of the upper installation cavity 2, and the right lightning arrester 4 and the left lightning arrester 3 are consistent in structural arrangement; the left end of decoupler 6 is connected with a set of left connecting wire 60, and the other end of left connecting wire 60 is at the middle part of core bar 33 under the lightning rod, and the right-hand member of decoupler 6 is connected with right connecting wire 61, and the other end of right connecting wire 61 is connected at the middle part of core bar under the lightning rod under right lightning rod 4 to be in the same place electric connection between decoupler 6 and left lightning rod 3, the right lightning rod 4.
As a better implementation mode, the transformer 1 in the utility model adopts a 10kV transformer, the left arrester 3 and the right arrester 4 are respectively arranged on the outgoing line ends of the left and right sides of the transformer 1, the left arrester 3 and the right arrester 4 are primary zinc oxide arresters, and the decoupler 6 is additionally arranged between the two sets of arresters, so that the damage of the transformer caused by induced overvoltage generated when the arresters suddenly discharge can be prevented;
the arrangement of the decoupling device 6 in the utility model plays a certain current limiting role, which can greatly reduce the amplitude of the thunder and lightning invasion wave and prevent the transformer from being damaged by the lightning stroke;
in the present embodiment, a set of connection plates 50 is disposed at both upper and lower ends of the mounting plate 5, and the connection plates 50 are fixed at the inner top of the upper mounting cavity 2 by fastening bolts 51, and the mounting plate 5 is located at the middle position between the left arrester 3 and the right arrester 4; the rear side surface of the mounting plate 5 is provided with a rear heat transfer layer 52, the rear side surface of the rear heat transfer layer 52 is provided with a rear heat dissipation aluminum plate 53, the left and right parts of the rear side surface of the rear heat dissipation aluminum plate 53 are provided with heat dissipation fin groups 54, the middle part of each heat dissipation fin group 54 is provided with a groove 55, and a turbofan 56 is installed in the groove 55.
As a preferred embodiment, the utility model discloses back heat transfer layer 52, back heat dissipation aluminum plate 53 and the heat radiation fin group 54 that well mounting panel 5 trailing flank set up conveniently carry out the large tracts of land and expand the heat capacity backward, and simultaneously under turbofan 56's left and right sides, utilize wind-force to add thermal treatment with higher speed to temperature is too high in the installation cavity 2, sets up more safe and reliable.
The utility model discloses can effectively solve the arrester on the current transformer of prior art under the condition of 80% lightning current of maximum reposition of redundant personnel, the heavy current has still surpassed the degree of bearing of transformer, and the arrester at this moment has played the problem of guard action to the transformer, the utility model discloses the leading-out terminal of transformer installs the decoupler between two sets of arresters additional, after transformer high-pressure side line suffered the thunderbolt, through the pressure release of two sets of arresters, in addition the current limiting action of decoupler, can reduce the amplitude of thunder and lightning invasion ripples by a wide margin to prevent that the transformer from suffering the damage of thunderbolt.
The utility model discloses a theory of operation: after the lightning invasion wave goes up the transformer output wire and falls down, the lightning invasion wave is limited by the front group of lightning arresters along the wire, the residual voltage is still higher than the withstand voltage of the transformer, and is reduced to the withstand voltage of the transformer after the voltage is limited by the next group of lightning arresters, in addition, the large current generated after the action of the lightning arresters is limited by the decoupler, the current mutation can be prevented from generating overvoltage to damage the transformer, the lightning invasion wave can greatly reduce the amplitude of the lightning invasion wave after entering the limitation of the double groups of lightning arresters and the decoupler, and therefore the transformer is prevented from being damaged by lightning.
Claims (6)
1. The utility model provides a 10kV transformer lightning protection device which characterized in that includes: the lightning arrester comprises an upper mounting cavity (2), a left lightning arrester (3), a right lightning arrester (4), a mounting plate (5) and a decoupler (6);
the transformer comprises an upper mounting cavity (2) arranged at the upper part of the transformer (1), wherein a left heat dissipation frame (20) is arranged at the left end of the upper mounting cavity (2), a right heat dissipation frame (21) is arranged at the right end of the upper mounting cavity (2), a plurality of groups of partition plates (22) are arranged in the left heat dissipation frame (20) and the right heat dissipation frame (21), and a top plate (23) is arranged at the upper end of the upper mounting cavity (2);
the left lightning arrester (3) is arranged at the left end of the upper end face of the top plate (23);
the right lightning arrester (4) is arranged at the right end of the upper end face of the top plate (23);
the mounting plate (5) is fixed in the middle of the upper mounting cavity (2);
and the decoupler (6) is arranged on the front side surface of the mounting plate (5).
2. The lightning protection device for the 10kV transformer according to claim 1, wherein a lower core rod (33) of the lightning rod is arranged at the lower part of the left lightning arrester (3), a set of upper sleeves (30) is sleeved at both the upper end and the lower end of the lower core rod (33) of the lightning rod, a set of upper springs (31) is arranged at both the lower end of the upper sleeve (30) on the upper side and the upper end of the upper sleeve (30) on the lower side, the front end of each set of upper springs (31) is supported against the rear side of a set of pressing plates (32), and a certain gap is formed between the upper pressing plate and the lower pressing plate (32).
3. The lightning protection device for the 10kV transformer according to claim 1, wherein the left lightning arrester (3) and the right lightning arrester (4) are bilaterally symmetrical about the center line of the upper installation cavity (2), and the right lightning arrester (4) and the left lightning arrester (3) are consistent in structural arrangement.
4. The lightning protection device for the 10kV transformer according to claim 1, wherein a set of connecting plates (50) are arranged at the upper end and the lower end of the mounting plate (5), the connecting plates (50) are fixed at the inner top of the upper mounting cavity (2) through fastening bolts (51), and the mounting plate (5) is located in the middle between the left lightning arrester (3) and the right lightning arrester (4).
5. The lightning protection device for the 10kV transformer according to claim 1, wherein a set of left connecting wires (60) is connected to the left end of the decoupler (6), the other end of the left connecting wires (60) is tied to the middle of the lower core rod (33) of the lightning rod, a right connecting wire (61) is connected to the right end of the decoupler (6), the other end of the right connecting wire (61) is connected to the middle of the lower core rod of the lightning rod under the right arrester (4), and the decoupler (6) is electrically connected with the left arrester (3) and the right arrester (4).
6. The lightning protection device for the 10kV transformer according to claim 1, wherein a rear heat transfer layer (52) is arranged on the rear side surface of the mounting plate (5), a rear heat dissipation aluminum plate (53) is arranged on the rear side surface of the rear heat transfer layer (52), heat dissipation fin groups (54) are arranged on the left and right sides of the rear side surface of the rear heat dissipation aluminum plate (53), a groove (55) is formed in the middle of each heat dissipation fin group (54), and a turbofan (56) is installed in each groove (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221484682.4U CN218214887U (en) | 2022-06-15 | 2022-06-15 | 10kV transformer lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221484682.4U CN218214887U (en) | 2022-06-15 | 2022-06-15 | 10kV transformer lightning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218214887U true CN218214887U (en) | 2023-01-03 |
Family
ID=84646549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221484682.4U Active CN218214887U (en) | 2022-06-15 | 2022-06-15 | 10kV transformer lightning protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218214887U (en) |
-
2022
- 2022-06-15 CN CN202221484682.4U patent/CN218214887U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN218214887U (en) | 10kV transformer lightning protection device | |
| CN112652985A (en) | Natural heat dissipation system of large-current switch cabinet based on heat pipe technology | |
| CN2619393Y (en) | Power lightning protector | |
| CN209730810U (en) | Discharging gap structure and without power frequency continued flow discharging gap apparatus | |
| CN205502713U (en) | Exchange special high tension power line tower | |
| CN206461364U (en) | A kind of grid short circuit current-limiting apparatus | |
| CN107241084B (en) | A kind of wide heavy current pulse power source device of long pulse of the equal current transformer of band | |
| CN206353466U (en) | A kind of earthing resistance cabinet modularization resistor | |
| CN212084768U (en) | Gap type lightning arrester for 10kV overhead line | |
| CN204905851U (en) | Take fail safe's source defend thunder equipment | |
| CN210182974U (en) | Intensive insulation bus duct | |
| CN107703389B (en) | A kind of detection device for lightning surge generator experiment | |
| CN207398780U (en) | A kind of good bus duct of New insulated performance | |
| CN2783496Y (en) | Combined overvoltage protector with parallel connected gap | |
| CN206293767U (en) | A kind of high-voltage arrester | |
| CN214707108U (en) | Lightning arrester for trolley bus | |
| CN213521284U (en) | Take graphite clearance switch type surge protector | |
| CN216902470U (en) | Power transformer integrated with grounding transformer | |
| CN209056926U (en) | A kind of lightning protection device and one kind for being tethered at unmanned plane is tethered at UAV system | |
| CN210926773U (en) | Shock attenuation heat dissipation type low pressure pull-out type cubical switchboard | |
| CN109873304A (en) | A kind of arrester of high efficiency and heat radiation | |
| CN213402463U (en) | Low-voltage super-capacitance compensation device | |
| CN106449029A (en) | Burglarproof transformer with lightning protection device | |
| CN211320890U (en) | Join in marriage and become lightning protection wiring structure of joining in marriage net overhead line of 10kV | |
| CN211654545U (en) | Short-circuit-resistant transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |