CN210156249U - Large-capacity grounding voltage transformer with fuse - Google Patents
Large-capacity grounding voltage transformer with fuse Download PDFInfo
- Publication number
- CN210156249U CN210156249U CN201921140126.3U CN201921140126U CN210156249U CN 210156249 U CN210156249 U CN 210156249U CN 201921140126 U CN201921140126 U CN 201921140126U CN 210156249 U CN210156249 U CN 210156249U
- Authority
- CN
- China
- Prior art keywords
- insulating cylinder
- insulator
- side wall
- voltage transformer
- fuse
- 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
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model discloses a large-capacity grounded voltage transformer with a fuse, which belongs to the field of high-voltage measurement relay protection equipment of an electric power system, and comprises an insulator and an insulating cylinder connected to the top of the insulator, wherein the middle shafts of the insulator and the insulating cylinder are positioned on the same straight line, the insulator and the insulating cylinder are cast into an integrated structure through epoxy resin, and the cast integrated structure is arranged on an installation bottom plate; the side wall of the insulating cylinder is provided with a plurality of umbrella skirts, and the umbrella skirts comprise a plurality of small umbrella skirts which are arranged on the side wall of the upper part of the insulating cylinder in sequence and have the same arc shape and a plurality of large umbrella skirts which are arranged on the side wall of the lower part of the insulating cylinder in sequence and have the same arc shape; hanging rings are arranged at four corners of the mounting bottom plate; small volume, simple structure, flexible installation and convenient maintenance.
Description
Technical Field
The utility model belongs to electric power system high pressure measurement relay protection equipment field, concretely relates to indoor dry-type voltage transformer.
Background
Voltage transformer is the equipment of measuring voltage, electric energy among electric power system or the electrical control system, in order to realize that the cubical switchboard is miniaturized and overhaul to maintain conveniently, adopts the design form of voltage transformer handcart usually, and current voltage transformer handcart form is: mainly by chassis car, single-phase voltage transformer, insulating pillar, external fuse etc. constitute, there are that capacity is little, the subassembly is more, the installation is complicated, overhaul numerous and diverse, quality control point is many, with high costs, insulating unreliable scheduling problem, the voltage transformer of large capacity, brief, insulating reliable, operation safety, easy maintenance, economic nature is urgent to wait for research production.
SUMMERY OF THE UTILITY MODEL
For solving exist not enough among the prior art, the utility model provides a take large capacity grounded voltage transformer of fuse, small, simple structure, the installation is nimble, the maintenance of being convenient for.
The utility model provides a technical scheme that its technical problem adopted is: a high-capacity grounding voltage transformer with a fuse comprises an insulator and an insulating cylinder connected to the top of the insulator, wherein the middle shafts of the insulator and the insulating cylinder are positioned on the same straight line, the insulator and the insulating cylinder are cast into an integrated structure through epoxy resin, and the cast integrated structure is arranged on an installation bottom plate; the side wall of the insulating cylinder is provided with a plurality of umbrella skirts, each umbrella skirt comprises a plurality of small umbrella skirts which are sequentially arranged on the side wall of the upper part of the insulating cylinder and have the same arc shape and a plurality of large umbrella skirts which are sequentially arranged on the side wall of the lower part of the insulating cylinder and have the same arc shape, and the size of each large umbrella skirt is larger than that of each small umbrella skirt; hanging rings are arranged at four corners of the mounting bottom plate;
the insulator main body is of a cuboid structure, semi-cylinders are arranged on the front side and the rear side of the insulator main body, a semi-circular arc surface is arranged at the top of each semi-cylinder, grooves are vertically formed in the lower portions of the semi-cylinders on the two sides, bosses are arranged on the left side and the right side of the insulator main body, the upper surfaces of the bosses are inclined surfaces, and concave angles are formed at the joints of the bosses and the semi-cylinders;
a secondary wire holder is connected to one side wall of the insulator, the secondary wire holder is positioned in the middle of the side wall of the insulator, a secondary protective cover is arranged above the secondary wire holder, and the secondary protective cover is made of transparent materials;
a voltage transformer body is sealed in the insulator and comprises a primary winding, a secondary winding and an iron core, wherein the primary winding and the secondary winding are concentrically wound on an insulating framework from inside to outside sequentially from top to bottom, the insulating framework is inserted into the iron core, and the iron core is an R-shaped iron core; a primary fuse is sealed in the insulating cylinder, a primary wiring terminal is fixed at one end of the primary fuse through a threaded sleeve bolt, and the other end of the primary fuse is connected with the voltage transformer body;
and the mounting bottom plate is provided with a grounding terminal which is positioned on one side of the secondary wire holder.
Furthermore, the insulating cylinder comprises an upper insulating cylinder and a lower insulating cylinder which are connected, the upper insulating cylinder is of a cylindrical structure, and the side wall of the upper insulating cylinder is provided with a plurality of small umbrella skirts which are sequentially arranged and have the same arc shape; the lower insulating cylinder is of a cylindrical structure, and the side wall of the lower insulating cylinder is provided with a plurality of large umbrella skirts which are sequentially arranged and have the same arc shape; the connecting surface of the upper insulating cylinder and the lower insulating cylinder is an inclined surface, and the diameter of the lower insulating cylinder is larger than that of the upper insulating cylinder.
Furthermore, a lead sealing screw is arranged on the secondary protective cover.
The utility model has the advantages that: the insulating cylinder protects the primary fuse from being affected by temperature and humidity and has an electric corrosion effect, and the arrangement of the umbrella skirt on the side wall of the insulating cylinder further improves the electrical insulation distance and the insulation distance relative to the ground, so that the level of an insulating product is improved; the iron core is an R-shaped iron core, so that the size is small, the capacity is large, the structure of the transformer is more compact, and the transformer is more suitable for being matched with a novel switch cabinet; during the installation use, only need with the mutual-inductor according to the phase sequence install in the cubical switchboard can, need not install other electrical accessories additional, simple to operate has saved assembly time, easy to maintain: the insulation is reliable, electrical connection parts are saved, and the operation is safer; the circuit can be protected by the arrangement of the primary fuse, the overcurrent phenomenon can be effectively cut off, and the mutual inductor is protected from being damaged.
Drawings
FIG. 1 is a sectional view of the overall structure of the present invention;
FIG. 2 is a partial sectional view of the present invention;
fig. 3 is a top view of the present invention;
fig. 4 is a side view of the present invention.
The reference numbers in the figures are as follows: 1. the transformer comprises an iron core, 2, a primary winding, 3, a secondary winding, 4, a large umbrella skirt, 5, a mounting base plate, 6, a secondary wire holder, 7, an insulating cylinder, 8, a turnbuckle bolt, 9, a secondary protective cover, 10, a primary fuse, 11, epoxy resin, 12, an insulator, 13, a groove, 14, a semi-cylinder, 15, a small umbrella skirt, 16, a grounding terminal, 17, a lifting ring, 18, a boss, 19 and a concave angle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
A high-capacity grounding voltage transformer with a fuse comprises an insulator 12 and an insulating cylinder 7 connected to the top of the insulator 12, wherein the middle shafts of the insulator 12 and the insulating cylinder 7 are positioned on the same straight line, the insulator 12 and the insulating cylinder 7 are cast into an integral structure through epoxy resin 11, and the cast integral structure is installed on an installation bottom plate 5; the side wall of the insulating cylinder 7 is provided with a plurality of umbrella skirts, each umbrella skirt comprises a plurality of small umbrella skirts 15 which are sequentially arranged on the side wall of the upper part of the insulating cylinder 7 and have the same arc shape and a plurality of large umbrella skirts 4 which are sequentially arranged on the side wall of the lower part of the insulating cylinder 7 and have the same arc shape, the size of each large umbrella skirt 4 is larger than that of each small umbrella skirt 15, and the small umbrella skirts 15 are arranged in parallel; hanging rings 17 are arranged at four corners of the mounting bottom plate 5, so that the mounting bottom plate is convenient to carry;
the main body of the insulator 12 is of a cuboid structure, the front side and the rear side of the main body are provided with semi-cylinders 14, the tops of the semi-cylinders 14 are provided with semi-circular arc surfaces, the lower parts of the semi-cylinders 14 on the two sides are vertical and are provided with grooves 13, the left side and the right side of the main body of the insulator 12 are provided with bosses 18, the upper surfaces of the bosses 18 are inclined surfaces, and concave angles 19 are formed at the joints of the bosses 18 and the semi-cylinders; the main body of the insulator 12, the semi-cylinder 14 and the boss 18 are assembled and combined to form a three-dimensional structure with upper semi-circle and four sunken corners.
A secondary wiring seat 6 is connected to one side wall of the insulator 12, so that secondary wiring arrangement of the switch cabinet and fixed leading-out of a secondary lead cable are facilitated during use; the secondary wire holder 6 is located the middle part of the side wall of the insulator 12, a secondary protective cover 9 is arranged above the secondary wire holder 6, the secondary protective cover 9 is made of transparent materials, and a lead sealing screw is arranged on the secondary protective cover 9.
A voltage transformer body is sealed in the insulator 12, the voltage transformer body comprises a primary winding 2, a secondary winding 3 and an iron core 1, the primary winding 2 and the secondary winding 3 are concentrically wound on an insulating framework from inside to outside in sequence from top to bottom, the insulating framework is inserted into the iron core 1, the iron core 1 is an R-shaped iron core, the capacity is larger, and the preferable application method of the R-shaped iron core in the embodiment is as follows: cutting the R-shaped iron core into two halves, namely a large half and a small half, wherein the two halves are C-shaped, the large half is wound with a secondary coil, and the two halves are combined together and fixed by a hose clamp; a primary fuse 10 is sealed in the insulating cylinder 7, a primary wiring terminal is fixed at one end of the primary fuse 10 through a turnbuckle bolt 8, and the other end of the primary fuse 10 is connected with the voltage transformer body; the primary wiring terminal is in a fastening mode of a threaded bolt 8 and is located on the uppermost portion of the primary fuse 10, and flexible wiring with a high-voltage end of the switch cabinet is achieved.
And the mounting bottom plate 5 is provided with a grounding terminal 16 for grounding, and the grounding terminal 16 is positioned on one side of the secondary wire holder 6.
The insulating cylinder 7 comprises an upper insulating cylinder and a lower insulating cylinder which are connected, the upper insulating cylinder is of a cylindrical structure, and the side wall of the upper insulating cylinder is provided with a plurality of small umbrella skirts 15 which are sequentially arranged and have the same arc shape; the lower insulating cylinder is of a cylindrical structure, and the side wall of the lower insulating cylinder is provided with a plurality of large umbrella skirts 4 which are sequentially arranged and have the same arc shape; the connecting surface of the upper insulating cylinder and the lower insulating cylinder is an inclined surface, and the diameter of the lower insulating cylinder is larger than that of the upper insulating cylinder. The shed is used for mounting and insulating the fuse, has enough mechanical strength, further improves the electrical insulation distance and the insulation distance relative to the ground, and improves the level of an insulating product.
The utility model discloses a formation process does: the primary winding 2 and the secondary winding 3 are concentrically wound on a core column of an iron core 1 by adopting special winding equipment, a voltage transformer body coil is formed after insulation and buffering wrapping, the voltage transformer body coil is fixed in a casting mould by utilizing an embedded nut, an iron core clamping piece and the like after vacuum drying, a primary terminal and a mould core mould are connected, secondary wiring is connected, the insulation distance is adjusted, epoxy resin 11 is adopted for vacuum casting and curing, and then the whole body is installed on an installation bottom plate 5, the insulators 12 are bilaterally symmetrical at the moment, the insulation cylinder 7 is in a vertically arranged hollow cylindrical shape, and the insulation cylinder is not only used for the installation space and the insulation of a primary fuse 10 and ensures that a uniform electric field is arranged around the installation space, but also is a main insulation transition piece of a primary wiring terminal and has enough mechanical strength; the primary wiring terminal is in a threaded sleeve bolt 8 connection mode and is positioned at the top of the primary fuse 10, and flexible wiring with a high-voltage end of the switch cabinet is realized; the arrangement of the umbrella skirt on the side wall of the insulating cylinder 7 further improves the electrical insulation distance and the insulation distance relative to the ground, and improves the level of an insulating product; the insulating cylinders 7 are vertically arranged, so that the phase sequence arrangement of the switch cabinet is facilitated; the insulator 12 is symmetrical left and right, and the lower parts of the front and rear semi-cylinders 14 are provided with grooves 13 to ensure uniform insulation distance; the secondary wiring seat 6 is convenient for secondary wiring arrangement of the handcart and fixed leading-out of a secondary lead cable when in use; a grounding terminal 16 is arranged on one side of the mounting bottom plate 5 close to the secondary wire holder 6, so that grounding is facilitated; hanging rings 17 are arranged at four corners of the mounting bottom plate 5, so that the carrying is convenient; a secondary protective cover 9 is arranged above the secondary wire holder 6 and has dustproof and waterproof functions, and the secondary protective cover 9 is made of transparent materials and is provided with a lead sealing screw.
The utility model discloses during the use, earlier pack into insulating cylinder 7 with primary fuse 10 in, then fix the swivel nut bolt 8 of having assembled on the top of insulating cylinder 7, utilize mounting plate 5 according to the phase sequence according to installing on the cubical switchboard chassis, once binding post is according to phase sequence in close contact with, carries out secondary line cable connection at last to install the anti-electricity-theft protection casing of secondary additional, assembly work is accomplished.
The utility model discloses a new product that designs according to national standard and voltage transformer cubical switchboard technical requirement adopts system R type iron core of book, utilizes the electromagnetic conversion principle, makes the change condition of secondary voltage ability accurate reflection primary voltage, uses as voltage measurement and relay protection.
The utility model discloses an epoxy 11 vacuum casting forms, has small, capacious, rational in infrastructure, the installation is nimble, easy maintenance, insulating reliable advantage, can extensively be applicable to the supporting use of novel cubical switchboard and old-fashioned cubical switchboard handcart and use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (3)
1. A high-capacity grounding voltage transformer with a fuse comprises an insulator (12) and an insulating cylinder (7) connected to the top of the insulator (12), and is characterized in that the middle shafts of the insulator (12) and the insulating cylinder (7) are positioned on the same straight line, the insulator (12) and the insulating cylinder (7) are cast into an integral structure through epoxy resin (11), and the cast integral structure is installed on an installation bottom plate (5); the side wall of the insulating cylinder (7) is provided with a plurality of umbrella skirts, each umbrella skirt comprises a plurality of small umbrella skirts (15) which are sequentially arranged on the side wall of the upper part of the insulating cylinder (7) and have the same arc shape and a plurality of large umbrella skirts (4) which are sequentially arranged on the side wall of the lower part of the insulating cylinder (7) and have the same arc shape, and the size of each large umbrella skirt (4) is larger than that of each small umbrella skirt (15); hanging rings (17) are arranged at the four corners of the mounting bottom plate (5);
the main body of the insulator (12) is of a cuboid structure, semi-cylinders (14) are arranged on the front side and the rear side of the main body, the top of each semi-cylinder (14) is provided with a semi-circular arc surface, the lower parts of the semi-cylinders (14) on the two sides are vertical and are provided with grooves (13), bosses (18) are arranged on the left side and the right side of the main body of the insulator (12), the upper surfaces of the bosses (18) are inclined surfaces, and concave angles (19) are formed at the joints of the bosses (18) and the semi-;
a secondary wire holder (6) is connected to one side wall of the insulator (12), the secondary wire holder (6) is located in the middle of the side wall of the insulator (12), a secondary protective cover (9) is arranged above the secondary wire holder (6), and the secondary protective cover (9) is made of transparent materials;
a voltage transformer body is sealed in the insulator (12), the voltage transformer body comprises a primary winding (2), a secondary winding (3) and an iron core (1), the primary winding (2) and the secondary winding (3) are sequentially concentrically wound on an insulating framework from inside to outside from top to bottom, the insulating framework is inserted into the iron core (1), and the iron core (1) is an R-shaped iron core; a primary fuse (10) is sealed in the insulating cylinder (7), a primary wiring terminal is fixed at one end of the primary fuse (10) through a turnbuckle bolt (8), and the other end of the primary fuse (10) is connected with the voltage transformer body;
and the mounting bottom plate (5) is provided with a grounding terminal (16), and the grounding terminal (16) is positioned on one side of the secondary wire holder (6).
2. A high-capacity grounded voltage transformer with a fuse as claimed in claim 1, wherein the insulating cylinder (7) comprises an upper insulating cylinder and a lower insulating cylinder which are connected, the upper insulating cylinder is of a cylindrical structure, and the side wall of the upper insulating cylinder is provided with a plurality of small sheds (15) which are arranged in sequence and have the same arc shape; the lower insulating cylinder is of a cylindrical structure, and the side wall of the lower insulating cylinder is provided with a plurality of large umbrella skirts (4) which are sequentially arranged and have the same arc shape; the connecting surface of the upper insulating cylinder and the lower insulating cylinder is an inclined surface, and the diameter of the lower insulating cylinder is larger than that of the upper insulating cylinder.
3. A fused high capacity grounded voltage transformer according to claim 1, characterized in that the secondary protecting cover (9) is provided with a lead sealing screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921140126.3U CN210156249U (en) | 2019-07-19 | 2019-07-19 | Large-capacity grounding voltage transformer with fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921140126.3U CN210156249U (en) | 2019-07-19 | 2019-07-19 | Large-capacity grounding voltage transformer with fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210156249U true CN210156249U (en) | 2020-03-17 |
Family
ID=69766323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921140126.3U Active CN210156249U (en) | 2019-07-19 | 2019-07-19 | Large-capacity grounding voltage transformer with fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210156249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376494A (en) * | 2019-07-24 | 2019-10-25 | 大连北方互感器集团有限公司 | A kind of device for voltage transformer test |
-
2019
- 2019-07-19 CN CN201921140126.3U patent/CN210156249U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376494A (en) * | 2019-07-24 | 2019-10-25 | 大连北方互感器集团有限公司 | A kind of device for voltage transformer test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203310894U (en) | Novel field winding all-fiber current transformer | |
| CN210607092U (en) | Solid-sealed insulating pole and primary and secondary depth fusion integrated on-pole circuit breaker | |
| CN216435775U (en) | Compact primary and secondary fusion measurement control device | |
| CN210156249U (en) | Large-capacity grounding voltage transformer with fuse | |
| CN203799857U (en) | Low-partial-discharge high-capacity post type current transformer | |
| CN201036153Y (en) | Backbone type bus current mutual inductor | |
| CN111354540A (en) | Current transformer used in air chamber | |
| CN202534494U (en) | Outdoor voltage transformer with fuse protector | |
| CN101192467A (en) | Amorphous alloy ground transformer body structure | |
| CN208093344U (en) | A kind of dc circuit breaker energy supply transformer | |
| CN206907622U (en) | The element outdoor composite insulation combination transformer of three-phase three | |
| CN211858385U (en) | Three-phase voltage transformer with fuse for handcart | |
| CN201594465U (en) | Electronic high-voltage direct current transformer | |
| CN205004161U (en) | Take integrated current transformer of contact box modularization | |
| CN203552921U (en) | Voltage transformer provided with plum blossom contact device and used for wheelbarrow | |
| CN208655407U (en) | Three-phase cable fuse voltage transformer | |
| CN201629220U (en) | Current transformer with live sensor and contact box | |
| CN216648004U (en) | Miniaturized ground connection formula voltage transformer | |
| CN205264487U (en) | A three -phase current transformer for column switch | |
| CN210443414U (en) | Voltage transformer for ring main unit | |
| CN204991425U (en) | Take outdoor voltage transformer of secondary circuit fuse | |
| CN216648053U (en) | Miniaturized all-insulated voltage transformer | |
| CN202258751U (en) | Three-phase contact-finger type voltage transformer for handcart | |
| CN202758729U (en) | Single-phase voltage transformer for intelligent user switch for dividing | |
| CN205354836U (en) | Novel resin pouring dry -type grounding transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A large capacity grounding voltage transformer with fuse Effective date of registration: 20230426 Granted publication date: 20200317 Pledgee: China Construction Bank Corporation Dalian Pulandian Branch Pledgor: DALIAN NORTH INSTRUMENT TRANSFORMER GROUP Co.,Ltd. Registration number: Y2023980039443 |