CN113884736A - Damper for preventing ferromagnetic resonance of capacitor voltage transformer and manufacturing method - Google Patents
Damper for preventing ferromagnetic resonance of capacitor voltage transformer and manufacturing method Download PDFInfo
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- CN113884736A CN113884736A CN202111149792.5A CN202111149792A CN113884736A CN 113884736 A CN113884736 A CN 113884736A CN 202111149792 A CN202111149792 A CN 202111149792A CN 113884736 A CN113884736 A CN 113884736A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/16—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices
Abstract
The invention relates to a manufacturing method of a damper for preventing ferromagnetic resonance of a capacitor voltage transformer, belonging to the technical field of voltage transformer production. The damper comprises an iron core, wherein an electrical insulating paper layer is coated on the outer surface of the iron core and is arranged in a ceramic protective box, and a high-temperature-resistant insulating layer and a high-resistivity wire layer are sequentially arranged outside the ceramic protective box. The damper designed by the invention has the advantages of compact structure, small occupied space and low production cost.
Description
Technical Field
The invention relates to the technical field of voltage transformer production, in particular to a damper suitable for preventing ferromagnetic resonance of a capacitor voltage transformer and a manufacturing method thereof.
Background
The capacitor voltage transformer is a voltage transformer which extracts voltage by a voltage division capacitor and transforms the voltage by a transformer to be used as voltage sources of a meter, relay protection and the like, and can couple carrier frequency to a power transmission line for long-distance communication and the like. Therefore, compared with the conventional electromagnetic voltage transformer, the capacitor voltage transformer has many advantages in economic and safety aspects besides preventing ferromagnetic resonance caused by the saturation of the iron core of the voltage transformer.
At present, there are various types of preventing the ferromagnetic resonance of the capacitor voltage transformer, and the use of a fast saturation reactor type damper is one of the common types. The fast saturated reactor type damper consists of two elements, namely a reactor and a resistor, and is respectively installed and fixed during use, long in assembly time, large in occupied space and high in cost.
Disclosure of Invention
In order to solve the problems in the prior art, the invention designs the damper suitable for preventing the ferromagnetic resonance of the capacitor voltage transformer, so that the product volume is reduced, and the occupied space is saved.
The technical scheme adopted by the invention is as follows: the damper comprises an iron core, wherein an electrical insulating paper layer is coated on the outer surface of the iron core and is arranged in a ceramic protective box, and a high-temperature-resistant insulating layer and a high-resistivity wire layer are sequentially arranged outside the ceramic protective box.
Furthermore, the outside of the ceramic protective box is provided with 3 high temperature resistant insulating layers and 2 high resistivity conductor layers in turn from inside to outside, the 3 high temperature resistant insulating layers are an inner high temperature resistant insulating layer, a middle high temperature resistant insulating layer and an outer high temperature resistant insulating layer from inside to outside, and the 2 high resistivity conductor layers are an inner high resistivity conductor layer and an outer high resistivity conductor layer from inside to outside.
Furthermore, a lead sheath is sleeved outside the outgoing line of the outer resistance wire layer, and the end part of the outgoing line is in press connection with a wiring terminal.
Furthermore, the 2 layers of high-resistivity conducting wire layers are all formed by winding constantan wires or manganin wires with high resistivity.
Furthermore, the 3 layers of high-temperature-resistant insulating layers are wrapped by high-temperature-resistant insulating tapes.
The invention discloses a manufacturing method of a damper suitable for preventing ferromagnetic resonance of a capacitor voltage transformer, which comprises the following specific steps: (1) binding electric insulation paper on the annular iron core to form an electric insulation paper layer, then placing the iron core into a ceramic protection box, and then binding a high-temperature-resistant insulation belt outside the ceramic protection box to form an inner high-temperature-resistant insulation layer;
(2) winding a high-resistivity wire outside the inner high-temperature-resistant insulating layer to form an inner high-resistivity wire layer, then wrapping a high-temperature-resistant insulating tape between the inner high-resistivity wire layer to form a middle high-temperature-resistant insulating layer, then winding the high-resistivity wire to form an outer high-resistivity wire layer, and then wrapping the high-temperature-resistant insulating tape to form an outer high-temperature-resistant insulating layer;
(3) and sheathing a lead sheath on the lead wire of the outer high-resistivity lead layer, and crimping a wiring terminal at the end part of the lead wire for external wiring.
Furthermore, the manufacturing method of the outer high-temperature-resistant insulating layer in the step (2) is to wrap a layer of high-temperature-resistant insulating tape on the outer high-resistivity conductor layer by adopting a half-laminating mode.
Compared with the prior art, the damper suitable for preventing the ferromagnetic resonance of the capacitor voltage transformer, which is designed by the invention, has the advantages that: the invention adopts the constantan wire or the manganin wire with high resistivity to wind on the ceramic protection box, and the iron core is arranged in the ceramic protection box, thereby forming the damper with a special structure and realizing the integration of two elements of the resistor and the reactor into one element. The product volume is reduced, the occupied space is saved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic front view of a damper for preventing ferroresonance of a capacitor voltage transformer.
Fig. 2 is a schematic view of a sectional structure of a damper for preventing ferroresonance of a capacitor voltage transformer.
In the figure, 1 iron core, 2 electrical insulating paper layers, 3 ceramic protecting boxes, 4 inner high temperature resistant insulating layers, 5 inner high resistance wire layers, 6 middle high temperature resistant insulating layers, 7 outer high resistance wire layers, 8 outer high temperature resistant insulating layers, 9 lead sheaths, 10 wiring terminals and 71 leading wires are arranged.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only some embodiments, but not all embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the present invention discloses an embodiment of a damper suitable for preventing a ferroresonance of a capacitor voltage transformer, in which the damper for preventing a ferroresonance of a capacitor voltage transformer includes an iron core 1, an electrical insulating paper layer 2 is coated on an outer surface of the iron core 1, and the iron core 1 is disposed in a ceramic protective box 3.
The outside of ceramic protecting box 3 is by interior target in place 3 layers of high temperature resistant insulating layer and 2 layers of high resistivity wire layers of having set gradually in turn, and 3 layers of high temperature resistant insulating layer are interior high temperature resistant insulating layer 4, well high temperature resistant insulating layer 6 and outer high temperature resistant insulating layer 8 by interior outside in proper order, and 2 layers of high resistivity wire layers are interior high resistivity wire layer 5 and outer high resistivity wire layer 7 by interior outside in proper order.
In this embodiment, the two high resistivity wire layers may be formed by winding constantan wire or manganin wire with high resistivity, wherein the lead wire 71 of the outer resistivity wire layer 7 is sleeved with the lead sheath 9, and the end of the lead wire 71 is crimped with the terminal 10 for external connection. The 3 high temperature resistant insulating layers are all bound by high temperature resistant insulating tapes.
The method for manufacturing the damper for preventing the ferromagnetic resonance of the capacitor voltage transformer disclosed in the embodiment specifically comprises the following steps: (1) binding electric insulation paper on the annular iron core 1 to form an electric insulation paper layer 2, then placing the iron core 1 into a ceramic protection box 3, and then binding a high-temperature-resistant insulation tape outside the ceramic protection box 3 to form an inner high-temperature-resistant insulation layer 4;
(2) the high-resistivity constantan wire is wound outside the inner high-temperature-resistant insulating layer 4 to form an inner high-resistivity wire layer 5, then a high-temperature-resistant insulating tape is wrapped outside the inner high-resistivity wire layer 5 to form a middle high-temperature-resistant insulating layer 6, then the high-resistivity constantan wire is wound to form an outer high-resistivity wire layer 7, and then a semi-laminating type wrapping high-temperature-resistant insulating tape is adopted to form an outer high-temperature-resistant insulating layer 8;
(3) the lead sheath 9 is sheathed around the two lead wires 71 of the outer high-resistivity conductor layer 7, and terminals 10 are respectively crimped to the ends of the two lead wires 71 for external connection.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and the description of the invention.
Claims (7)
1. The damper is characterized by comprising an iron core, wherein an electrical insulating paper layer is coated on the outer surface of the iron core and is arranged in a ceramic protective box, and a high-temperature-resistant insulating layer and a high-resistivity wire layer are sequentially arranged outside the ceramic protective box.
2. The damper suitable for preventing the ferromagnetic resonance of the capacitor voltage transformer according to claim 1, wherein the outer side of the ceramic protective box is provided with 3 high temperature resistant insulating layers and 2 high resistivity conductor layers in turn from inside to outside, the 3 high temperature resistant insulating layers are an inner high temperature resistant insulating layer, a middle high temperature resistant insulating layer and an outer high temperature resistant insulating layer in turn from inside to outside, and the 2 high resistivity conductor layers are an inner high resistivity conductor layer and an outer high resistivity conductor layer in turn from inside to outside.
3. The damper suitable for preventing the ferroresonance of the capacitor voltage transformer as recited in claim 2, wherein a lead sheath is sleeved outside the lead wire of the outer resistivity conductor layer, and a terminal is crimped to the end of the lead wire.
4. The damper suitable for preventing the ferromagnetic resonance of the capacitor voltage transformer as recited in claim 3, wherein the 2 high resistivity conductor layers are wound by using constantan wire or manganin wire with high resistivity.
5. The damper suitable for preventing the ferromagnetic resonance of the capacitor voltage transformer as recited in claim 4, wherein the 3 high temperature resistant insulating layers are wrapped by high temperature resistant insulating tapes.
6. A method for manufacturing a damper according to claim 5, wherein the method comprises the following specific steps: (1) binding electric insulation paper on the annular iron core to form an electric insulation paper layer, then placing the iron core into a ceramic protection box, and then binding a high-temperature-resistant insulation belt outside the ceramic protection box to form an inner high-temperature-resistant insulation layer;
(2) winding a high-resistivity wire outside the inner high-temperature-resistant insulating layer to form an inner high-resistivity wire layer, then wrapping a high-temperature-resistant insulating tape between the inner high-resistivity wire layer to form a middle high-temperature-resistant insulating layer, then winding the high-resistivity wire to form an outer high-resistivity wire layer, and then wrapping the high-temperature-resistant insulating tape to form an outer high-temperature-resistant insulating layer;
(3) and a lead sheath is sleeved outside the lead wire of the outer high-resistivity lead layer, and a connecting terminal is pressed at the end part of the lead wire for external connection.
7. The method for manufacturing a damper according to claim 6, wherein the outer high temperature-resistant insulating layer in step (2) is manufactured by wrapping a layer of high temperature-resistant insulating tape on the outer high resistivity conductor layer by using a half-lap-pressing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149792.5A CN113884736A (en) | 2021-09-29 | 2021-09-29 | Damper for preventing ferromagnetic resonance of capacitor voltage transformer and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111149792.5A CN113884736A (en) | 2021-09-29 | 2021-09-29 | Damper for preventing ferromagnetic resonance of capacitor voltage transformer and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113884736A true CN113884736A (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111149792.5A Pending CN113884736A (en) | 2021-09-29 | 2021-09-29 | Damper for preventing ferromagnetic resonance of capacitor voltage transformer and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113884736A (en) |
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2021
- 2021-09-29 CN CN202111149792.5A patent/CN113884736A/en active Pending
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