CN201590322U - Anti-foul voltage transformer with small partial discharge - Google Patents
Anti-foul voltage transformer with small partial discharge Download PDFInfo
- Publication number
- CN201590322U CN201590322U CN2009202204031U CN200920220403U CN201590322U CN 201590322 U CN201590322 U CN 201590322U CN 2009202204031 U CN2009202204031 U CN 2009202204031U CN 200920220403 U CN200920220403 U CN 200920220403U CN 201590322 U CN201590322 U CN 201590322U
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- iron core
- voltage transformer
- voltage
- soil
- coil
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Abstract
The utility model discloses an anti-foul voltage transformer with small partial discharge, which comprises a primary coil, a secondary coil, an iron core, a shielding layer, electrostatic screens, a casting body, a high voltage connecting terminal and a low voltage connecting terminal. The electrostatic screens are arranged at two ends of the iron core, the shielding layer is arranged on the outer side of the iron core in a semi-overlaying manner, the primary coil and the secondary coil are wound on the iron core and in coupling connection via the iron core, and the sealed casting body is formed by casting the primary coil, the secondary coil and the iron core inside cycloxychloride resin. Lead of the primary coil is connected with the high voltage connecting terminal in a multilayer umbrella structure, and lead of the secondary coil is connected with the low voltage connecting terminal. With engagement of the electrostatic screens and the shielding layer, the voltage transformer lowers partial discharge of voltage transformer products, increases safety and stability of the products, increases creepage distance by adopting the high voltage connecting terminal in the multilayer umbrella structure, and leads the voltage transformer products to be usable in areas with high pollution level.
Description
Technical field
The utility model relates to the electrical installation that uses in the transmission line, particularly relates to a kind of little office and puts the dirty voltage transformer of anti-soil.
Background technology
Voltage transformer generally is used in the power network line, as the equipment of voltage measurement and protection.Existing voltage transformer generally is made of primary winding, secondary coil, iron core and insulation; first and second coil is coupled by iron core; primary winding is connected with the high-pressure side; secondary coil is connected with measuring instrument or relay protection device, realizes that high pressure is converted into the low pressure that can be convenient for measuring or is used to drive the low pressure of relay protection device by iron core coupling.The iron core of present voltage transformer adopts cold-reduced silicon sheet to reel and forms, and iron core is not provided with the electrostatic screen device, therefore cause the big problem of partial discharge quantity, and many most advanced and sophisticated burrs are often arranged on the iron core surface, these most advanced and sophisticated burrs can produce point discharge during use, also increase the partial discharge quantity of product, caused present voltage transformer Product Safety, less stable.And, the umbrella-shaped structures that adopt same diameter of the high-voltage connection terminal in the existing voltage transformer more, creepage distance is short, easily is short-circuited in the high area of pollution level and can't uses.
The utility model content
Based on above-mentioned existing in prior technology problem, the utility model embodiment provides a kind of little office to put the dirty voltage transformer of anti-soil, and its partial discharge quantity is little, can improve security of products and stability, and is applicable to the area use that gradation for surface pollution is high.
The utility model is achieved through the following technical solutions:
The utility model embodiment provides a kind of little office to put the dirty voltage transformer of anti-soil, comprising:
Primary winding, secondary coil, iron core, screen, electrostatic shielding, pour mass, high-voltage connection terminal and low-voltage wiring terminal;
Described iron core two ends are provided with electrostatic shielding, iron core outside half lap one deck screen, and first and second coil all is wrapped on the iron core, and first and second coil is of coupled connections by iron core, and first and second coil and iron core all are cast in the ring chlorine epoxy resins and form closed pour mass; The lead-in wire of primary winding is connected with high-voltage connection terminal, and high-voltage connection terminal is the multilayer umbrella-shaped structure, and the lead-in wire of secondary coil is connected with low-voltage wiring terminal.
By above-mentioned embodiment of the present utility model as can be seen, in the utility model embodiment, electrostatic shielding is set by two ends at voltage transformer, and at iron core outside half lap one deck screen, thereby effectively with the most advanced and sophisticated burr of iron core etc. easily the dielectric shielding of discharge outside electric field, thereby effectively reduce the partial discharge quantity of the voltage transformer product of formation.Voltage transformer security of products and stability have been increased; Adopt the high-voltage connection terminal of multilayer umbrella-shaped structure simultaneously, increased creepage distance, make this voltage transformer product to use in the high area of gradation for surface pollution.
Description of drawings
The structural representation of the voltage transformer that Fig. 1 provides for the utility model embodiment;
The structural representation of the iron core of the voltage transformer that Fig. 2 provides for the utility model embodiment;
The electrical schematic diagram of the voltage transformer that Fig. 3 provides for the utility model embodiment;
Each label is among the figure:
1. top electrostatic shielding; 2. terminal electrostatic shielding; 3. semiconductive crimped paper; 4. high-voltage connection terminal profile overstriking place; 5. base plate; 6. high-voltage connection terminal; 7. pour mass.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
Present embodiment provides a kind of little office to put the dirty voltage transformer of anti-soil, can be used on that the equipment as electric energy measurement or relaying protection uses in the power circuit, and as shown in Figure 1, 2, this voltage transformer comprises:
Primary winding, secondary coil, iron core, screen, electrostatic shielding, pour mass, high-voltage connection terminal and low-voltage wiring terminal;
Wherein, the iron core two ends are provided with electrostatic shielding, top electrostatic shielding 1 and terminal electrostatic shielding 2 promptly are set at the iron core two ends, iron core outside half lap one deck screen, promptly at the outside of iron core half lap one deck semiconductive crimped paper 3, first and second coil all is wrapped on the iron core, and first and second coil is of coupled connections by iron core, and first and second coil and iron core all are cast in and form closed pour mass 7 in the epoxy resin; The lead-in wire of primary winding and high-voltage connection terminal 6 are electrically connected, high-voltage connection terminal 6 outsides are the multilayer umbrella-shaped structure, what adopt is the big umbellule structure of the different multilayer of diameter, and the external diameter and the quantity of umbrella have been strengthened, the high-voltage connection terminal of this structure has strengthened the creepage distance of voltage transformer product, makes this voltage transformer be particularly suitable for the high area of gradation for surface pollution and uses; Make the whole overstriking of high-voltage connection terminal simultaneously, though among Fig. 1 shown in 4 diameter reach 184～190mm, can effectively prevent to cause owing to dress mould reason dress local derviation the problem of electrion like this as the lead-in wire of on high-tension side primary winding; The lead-in wire of secondary coil is electrically connected with low-voltage wiring terminal and is connected.
Also comprise base plate in the above-mentioned voltage transformer, be arranged on the pour mass bottom of voltage transformer, described iron core bottom is 24～32mm apart from the distance between the base plate 5.Traditional voltage transformer iron core of the same type and the distance L between the base plate are to the maximum about 10mm, voltage transformer among the utility model embodiment makes the distance between iron core and the base plate reach 24～32mm (the employing 28mm left and right sides is preferable in the reality), thereby strengthened primary winding air line distance over the ground, thereby also can reduce the partial discharge of voltage transformer product effectively.
What the iron core in the above-mentioned voltage transformer adopted is the otch iron core, is specially annular core shown in Figure 2, and the sheet of this iron core is wide to be 30～75mm; The sheet of iron core is thick to be 29～74mm.
This model voltage transformer partial discharge quantity is little, the gradation for surface pollution height, and creepage distance is big.
During actual the use, the voltage transformer among the utility model embodiment can three be used in combination, adopt three instrument transformers of the mode of connection among Fig. 3 to be electrically connected after, three phase line A, B, C are measured.
In sum, voltage transformer among the utility model embodiment, by the iron core two ends top electrostatic shielding 1 and terminal electrostatic shielding 2 are set, and under the effect of outside half lap one deck as the semiconductive crimped paper of screen of iron core, can be effectively with the most advanced and sophisticated burr of iron core etc. easily the dielectric shielding of discharge outside electric field, reduce the partial discharge quantity of voltage transformer product effectively, thereby improved voltage transformer security of products and stability.And high-voltage connection terminal adopts big umbellule structure, has effectively increased the creepage distance of voltage transformer, makes this voltage transformer be particularly suitable for the high area of gradation for surface pollution and uses.
The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claims.
Claims (7)
1. the dirty voltage transformer of anti-soil is put in one kind little office, it is characterized in that, comprising:
Primary winding, secondary coil, iron core, screen, electrostatic shielding, pour mass, high-voltage connection terminal and low-voltage wiring terminal;
Described iron core two ends are provided with electrostatic shielding, iron core outside half lap one deck screen, and first and second coil all is wrapped on the iron core, and first and second coil is of coupled connections by iron core, and first and second coil and iron core all are cast in the ring chlorine epoxy resins and form closed pour mass; The lead-in wire of primary winding is connected with high-voltage connection terminal, and high-voltage connection terminal is the multilayer umbrella-shaped structure, and the lead-in wire of secondary coil is connected with low-voltage wiring terminal.
2. the dirty voltage transformer of anti-soil is put in little office as claimed in claim 1, it is characterized in that described high-voltage connection terminal base diameter is 184～190mm.
3. the dirty voltage transformer of anti-soil is put in little office as claimed in claim 1, it is characterized in that the multilayer umbrella-shaped structure of described high-voltage connection terminal is the different multilayer umbrella-shaped structure of diameter.
4. the dirty voltage transformer of anti-soil is put in little office as claimed in claim 1, it is characterized in that described voltage transformer also comprises base plate, is arranged on the pour mass bottom, and described iron core bottom is 24～32mm apart from the distance between the base plate.
5. the dirty voltage transformer of anti-soil is put in little office as claimed in claim 1, it is characterized in that described iron core is the otch iron core.
6. the dirty voltage transformer of anti-soil is put in little office as claimed in claim 5, it is characterized in that the sheet of described iron core is wide to be 30～75mm, and the sheet of iron core is thick to be 29～74mm.
7. the dirty voltage transformer of anti-soil is put in little office as claimed in claim 1, it is characterized in that described screen adopts semiconductive crimped paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202204031U CN201590322U (en) | 2009-10-28 | 2009-10-28 | Anti-foul voltage transformer with small partial discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202204031U CN201590322U (en) | 2009-10-28 | 2009-10-28 | Anti-foul voltage transformer with small partial discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590322U true CN201590322U (en) | 2010-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202204031U Expired - Fee Related CN201590322U (en) | 2009-10-28 | 2009-10-28 | Anti-foul voltage transformer with small partial discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987081A (en) * | 2018-09-19 | 2018-12-11 | 天津市百利纽泰克电气科技有限公司 | Quadruplet pipe elbow-type head earthed voltage transformer primary shielding structure |
| CN112951575A (en) * | 2021-03-18 | 2021-06-11 | 大连北方互感器集团有限公司 | Method for manufacturing body coil of voltage transformer |
-
2009
- 2009-10-28 CN CN2009202204031U patent/CN201590322U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108987081A (en) * | 2018-09-19 | 2018-12-11 | 天津市百利纽泰克电气科技有限公司 | Quadruplet pipe elbow-type head earthed voltage transformer primary shielding structure |
| CN108987081B (en) * | 2018-09-19 | 2024-03-08 | 天津市百利纽泰克电气科技有限公司 | Primary shielding structure of four-sleeve elbow-type head grounding voltage transformer |
| CN112951575A (en) * | 2021-03-18 | 2021-06-11 | 大连北方互感器集团有限公司 | Method for manufacturing body coil of voltage transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20141028 |
|
| EXPY | Termination of patent right or utility model | ||
| C49 | Reinstatement of patent right or utility model | ||
| RR01 | Reinstatement of patent right |
Former decision: cessation of patent right due to non-payment of the annual fee Former decision publication date: 20160113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20151028 |