CN116525229A - Lightning protection structure and transformer with same - Google Patents
Lightning protection structure and transformer with same Download PDFInfo
- Publication number
- CN116525229A CN116525229A CN202310518977.1A CN202310518977A CN116525229A CN 116525229 A CN116525229 A CN 116525229A CN 202310518977 A CN202310518977 A CN 202310518977A CN 116525229 A CN116525229 A CN 116525229A
- Authority
- CN
- China
- Prior art keywords
- transformer
- lightning protection
- protection structure
- groups
- base
- 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 14
- 239000011787 zinc oxide Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/001—Mass resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a lightning protection structure and a transformer comprising the same, which comprises two groups of end covers, insulating sleeves, a base and wiring terminals, wherein resistors, copper sheets and connecting rods are arranged between the two groups of end covers, concave rings are arranged on the surfaces of the end covers, grooves are arranged on the surfaces of the copper sheets, protruding blocks inserted into the grooves are arranged on the surfaces of the resistors, the insulating sleeves are sleeved on the surfaces of the end covers and clamped into the concave rings, the base and the wiring terminals are connected with the corresponding end covers, the lightning protection structure is pre-installed on a transformer body through insulating frames, the installation efficiency is improved, the copper sheets are utilized to carry out reinforcing connection on two adjacent groups of resistors, the protruding blocks on the surfaces of the resistors are inserted into the grooves on the surfaces of the copper sheets, so that the structure is more stable after the resistor groups of resistors are connected, the problem of loosening of the resistors is not easy to occur, the lightning protection structure is ensured to be more reliable in use, the insulating sleeves are more stable after being fixed by the insulating sleeves are fixed by fixing rings, the insulating structures are not easy to loosen after being used for a long time, and the insulating performance is stable.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a lightning protection structure and a transformer with the same.
Background
In the prior art, transformers are typically equipped with a composite coated zinc oxide arrester and the arrester is mounted on an outdoor transmission line. When abnormal high voltage occurs on the transmission line due to lightning strike, the lightning arrester is conducted due to the high voltage, and the ground wire connected with the lightning arrester is used for guiding the high voltage to the ground, so that the transformer is protected.
In the related art, a common 10kV transformer is generally provided with three groups of lightning arresters, the three groups of lightning arresters are firstly fixed on the same support, then the support is fixed on a telegraph pole through anchor ear, screw and nut, and then a high-voltage wire, the lightning arresters and the transformer are communicated by using the wire and the matched screw, so that the connection between the lightning arresters and the transformer is realized. The lightning arrester is characterized in that zinc oxide is processed into round blocks and then piled up, the corresponding fixing structure is used for preventing loosening, an insulating rubber sleeve is wrapped outside the zinc oxide blocks for insulation, and the characteristics of zinc oxide materials are utilized for lightning protection.
The installation of the transformer and the lightning arrester is carried out by means of staff, a plurality of parts such as a bracket, a hoop, a transformer installation seat and the like and matched tools are installed in sequence from the high position to the low position of a telegraph pole, then the lightning arrester and the transformer are fixed and connected with wires, and the installation process has more steps and used tools and parts and low installation speed; the zinc oxide blocks directly stacked together lack of a connecting structure, a certain zinc oxide block is easy to move when being vibrated, the performance of a lightning arrester is affected, the insulating rubber sleeve is sealed by means of elasticity of rubber, the sealing performance of the insulating rubber sleeve is not stable enough, and the problem that the insulating performance is reduced easily occurs when the rubber is aged.
Disclosure of Invention
The invention aims to provide a lightning protection structure and a transformer with the same, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the lightning protection structure comprises two groups of end covers, wherein a resistor, copper sheets and a connecting rod are arranged between the two groups of end covers, the resistor and the copper sheets are arranged in a staggered mode, the resistor is made of zinc oxide material, a concave ring is arranged on the surface of the end cover, a groove is formed in the surface of the copper sheet, and a lug inserted into the groove is arranged on the surface of the resistor, so that the resistor can be fixed by the copper sheets, and the stability of the lightning arrester structure is improved;
the insulating sleeve is sleeved on the surface of the end cover and clamped into the concave ring, is arranged in a corrugated shape and is made of rubber materials;
the base and the wiring terminal are connected with the corresponding end cover.
Further, the end cover surface is equipped with the shrinkage pool, and the shrinkage pool inner wall is equipped with the orifice plate, the connecting rod runs through the orifice plate, the connecting rod is equipped with the screw thread, connecting rod surface spiro union has the locking cap, when tightening the locking cap, control two sets of end covers clamp resistor.
Further, the surface of the insulating sleeve is sleeved with a reinforcing ring, and the reinforcing ring is positioned outside the concave ring and is matched with the concave ring to clamp the insulating sleeve.
Further, three groups of fixing holes are formed in the surface of the base, and four groups of wiring holes are formed in the surface of the wiring terminal.
Furthermore, the fixing bolts are inserted into the surfaces of the base and the wiring terminal and are in threaded connection with the corresponding end covers, so that the base and the wiring terminal are fixed.
Further, the middle part of the surface of the end cover is provided with a connecting groove, and the resistor is arranged in the connecting groove, so that the connection stability of the resistor and the end cover is improved.
The invention also provides a transformer which comprises the lightning protection structure.
The transformer is characterized by further comprising a transformer body, wherein an insulating frame is arranged on the upper surface of the transformer body, the insulating frame is in n-shaped arrangement, a certain distance is kept between the transformer body and the lightning protection structure, the base is arranged on the surface of the insulating frame, a threaded rod is arranged on the surface of the insulating frame, penetrates through a fixing hole on the surface of the base and is then fixed by a nut, and the wiring terminal is electrically connected with the transformer body.
Further, three groups of wiring posts are arranged on the upper surface of the transformer body, a first wire is arranged between each wiring post and each wiring terminal, a second wire is arranged on the surface of each wiring terminal, a ground wire is arranged on the surface of the base, and the lightning protection structure is connected in series through the ground wire and grounded.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the copper sheets are used for reinforcing and connecting two adjacent groups of resistors, and the convex blocks on the surfaces of the resistors are inserted into the grooves on the surfaces of the copper sheets, so that the structure of the connected groups of resistors is more stable, the problem of loosening of the resistors is difficult to occur, and the use of the lightning protection structure is more reliable;
the insulation sleeve has elasticity and can be clamped into the concave ring, so that the connection stability of the insulation sleeve and the end cover is improved, the insulation sleeve is not easy to fall off from the end cover, the reinforcement ring holds the insulation sleeve tightly on the concave ring, the insulation sleeve is more stable after being fixed, the loosening problem is not easy to occur after long-term use, and the insulation performance is stable;
the lightning protection structure is pre-installed on the transformer body through the insulating frame and is communicated by the first lead, so that the installation process of the transformer body is only required to fix the transformer body, the lightning protection structure is not required to be installed, the installation steps and the used tools are simplified, and the installation efficiency of the transformer body is improved.
Drawings
FIG. 1 is a cross-sectional view of a lightning protection structure of the invention;
FIG. 2 is a schematic diagram of the connection between a resistor and a copper sheet according to the present invention;
FIG. 3 is a schematic view of the structure of the end cap and orifice plate connection of the present invention;
fig. 4 is a schematic structural diagram of the connection between the transformer body and the lightning protection structure according to the present invention.
In the figure: 1. an end cap; 2. an insulating sleeve; 3. a reinforcing ring; 4. a concave ring; 5. a resistor; 6. copper sheets; 7. a terminal; 8. a fixing bolt; 9. a connecting rod; 10. an orifice plate; 11. a bump; 12. a groove; 13. concave holes; 14. a locking cap; 15. a connecting groove; 16. a transformer body; 17. an insulating frame; 18. binding posts; 19. a first wire; 20. a second wire; 21. a ground wire; 22. and (5) a base.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: the lightning protection structure comprises two groups of end covers 1, a resistor 5, a copper sheet 6 and a connecting rod 9 are arranged between the two groups of end covers 1, the connecting rod 9 is made of insulating materials, engineering plastics or glass fibers can be used, the connecting rod 9 connects the two groups of end covers 1 to clamp the resistor 5 and the copper sheet 6, a concave ring 4 is arranged on the surface of the end cover 1, a groove 12 is arranged on the surface of the copper sheet 6, a lug 11 inserted into the groove 12 is arranged on the surface of the resistor 5, the resistor 5 is prevented from loosening, and the integrity of the lightning protection structure is improved;
the insulation sleeve 2 is sleeved on the surface of the end cover 1 and clamped into the concave ring 4, and an arc groove on the surface of the concave ring 4 can clamp the insulation sleeve 2, so that the stability between the insulation sleeve 2 and the end cover 1 is improved;
a base 22 and a terminal 7, said base 22 and terminal 7 being connected to the corresponding end cap 1.
The end cover 1 surface is equipped with shrinkage pool 13, and shrinkage pool 13 inner wall is equipped with orifice 10, and shrinkage pool 13 makes orifice 10 can not follow end cover 1 and go up to protrude, connecting rod 9 runs through orifice 10, connecting rod 9 is equipped with the screw thread, connecting rod 9 surface spiro union has locking cap 14, when tightening locking cap 14, and locking cap 14 extrudees two sets of end covers 1 and is close to each other, and then presss from both sides tight resistor 5.
As shown in fig. 1, the surface of the insulating sleeve 2 is sleeved with a reinforcing ring 3, the reinforcing ring 3 is positioned outside the concave ring 4, and is matched with the concave ring 4 to fix the insulating sleeve 2, so that the insulating sleeve 2 is prevented from being separated from the concave ring 4.
Three groups of fixing holes are formed in the surface of the base 22 and are used for being connected with the insulating frame 17, and four groups of wiring holes are formed in the surface of the wiring terminal 7 and are used for installing wires.
As shown in fig. 1, the fixing bolts 8 are inserted into the surfaces of the base 22 and the terminal 7, the fixing bolts 8 are screwed with the corresponding end covers 1, and the surfaces of the end covers 1 are provided with screw holes matched with the fixing bolts 8.
The middle part of the surface of the end cover 1 is provided with a connecting groove 15, and the resistor 5 is arranged inside the connecting groove 15 to limit the resistor 5 to slide on the end cover 1.
The invention also provides a transformer which comprises the lightning protection structure.
The transformer further comprises a transformer body 16, an insulating frame 17 is arranged on the upper surface of the transformer body 16, the base 22 is arranged on the surface of the insulating frame 17, the insulating frame 17 is provided with a threaded rod which can penetrate through the base 22 and then is fixed by using a nut, and the wiring terminal 7 is electrically connected with the transformer body 16.
As shown in fig. 4, three sets of wiring posts 18 are arranged on the upper surface of the transformer body 16, a first wire 19 is arranged between the wiring posts 18 and the wiring terminal 7, a second wire 20 is arranged on the surface of the wiring terminal 7, the second wire 20 is connected with a high-voltage wire, a ground wire 21 is arranged on the surface of the base 22, and the ground wire 21 is connected into the ground.
Specifically, when in use, the resistor 5 and the copper sheet 6 are spliced in sequence, so that the convex blocks 11 on the surface of the resistor 5 are inserted into the grooves 12 on the surface of the copper sheet 6, the connection stability of the resistor 5 is improved by utilizing the convex blocks 11 and the grooves 12, the resistor 5 is prevented from loosening partially, the resistor 5 is arranged in the two groups of end covers 1, the connecting rod 9 penetrates through the pore plate 10, the locking cap 14 is screwed with the connecting rod 9, the locking cap 14 abuts against the pore plate 10 when being screwed tightly, an external force is applied to the pore plate 10, the two groups of end covers 1 are driven to clamp the resistor 5, the elastic insulating sleeve 2 is sleeved on the concave ring 4 on the surface of the end cover 1, then the outer part of the insulating sleeve 2 is reinforced by using the reinforcing ring 3, and then the base 22 and the connecting terminal 7 are connected with the corresponding end cover 1 by using the fixing bolts 8;
three groups of fixing holes on the surface of the base 22 are sleeved with three groups of threaded rods on the surface of the insulating frame 17, the ground wire 21 is sleeved on the threaded rods through a wire nose, then the base 22 and the ground wire 21 are connected and fixed through nuts and the threaded rods, the binding post 18 on the surface of the transformer body 16 is connected with the binding post 7 through a first wire 19, the first wire 19 is fixed in a wiring hole on the surface of the binding post 7, the lower end of the second wire 20 is fixed in different wiring holes, when the transformer body 16 is installed, the ground wire 21 is connected underground, the second wire 20 is connected with a high-voltage wire, the lightning protection structure is prevented from being installed again by workers, and the installation speed is accelerated.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A lightning protection structure, comprising:
the novel high-voltage transformer comprises two groups of end covers (1), wherein a resistor (5), a copper sheet (6) and a connecting rod (9) are arranged between the two groups of end covers (1), a concave ring (4) is arranged on the surface of the end cover (1), a groove (12) is formed in the surface of the copper sheet (6), and a lug (11) inserted into the groove (12) is arranged on the surface of the resistor (5);
the insulation sleeve (2) is sleeved on the surface of the end cover (1) and is clamped into the concave ring (4);
the base (22) and the wiring terminal (7), and the base (22) and the wiring terminal (7) are connected with the corresponding end cover (1).
2. A lightning protection structure according to claim 1 wherein: the novel connecting rod is characterized in that a concave hole (13) is formed in the surface of the end cover (1), a pore plate (10) is arranged on the inner wall of the concave hole (13), the connecting rod (9) penetrates through the pore plate (10), the connecting rod (9) is provided with threads, and a locking cap (14) is screwed on the surface of the connecting rod (9).
3. A lightning protection structure according to claim 1 wherein: the surface of the insulating sleeve (2) is sleeved with a reinforcing ring (3), and the reinforcing ring (3) is positioned outside the concave ring (4).
4. A lightning protection structure according to claim 1 wherein: three groups of fixing holes are formed in the surface of the base (22), and four groups of wiring holes are formed in the surface of the wiring terminal (7).
5. A lightning protection structure according to claim 4 wherein: the surface of the base (22) and the surface of the wiring terminal (7) are respectively inserted with a fixing bolt (8), and the fixing bolts (8) are in threaded connection with the corresponding end covers (1).
6. A lightning protection structure according to claim 1 wherein: the middle part of the surface of the end cover (1) is provided with a connecting groove (15), and the resistor (5) is arranged in the connecting groove (15).
7. A transformer, characterized in that: the transformer comprising the lightning protection structure of any one of claims 1-6.
8. A transformer according to claim 7, wherein: the transformer is characterized by further comprising a transformer body (16), wherein an insulating frame (17) is arranged on the upper surface of the transformer body (16), the base (22) is arranged on the surface of the insulating frame (17), and the wiring terminal (7) is electrically connected with the transformer body (16).
9. A transformer according to claim 8, wherein: the transformer is characterized in that three groups of wiring posts (18) are arranged on the upper surface of the transformer body (16), a first lead (19) is arranged between each wiring post (18) and each wiring terminal (7), a second lead (20) is arranged on the surface of each wiring terminal (7), and a ground wire (21) is arranged on the surface of the base (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310518977.1A CN116525229A (en) | 2023-05-09 | 2023-05-09 | Lightning protection structure and transformer with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310518977.1A CN116525229A (en) | 2023-05-09 | 2023-05-09 | Lightning protection structure and transformer with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116525229A true CN116525229A (en) | 2023-08-01 |
Family
ID=87402783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310518977.1A Pending CN116525229A (en) | 2023-05-09 | 2023-05-09 | Lightning protection structure and transformer with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116525229A (en) |
-
2023
- 2023-05-09 CN CN202310518977.1A patent/CN116525229A/en active Pending
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| PB01 | Publication | ||
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