CN214956320U - Protection device for transformer direct current magnetic bias suppression - Google Patents
Protection device for transformer direct current magnetic bias suppression Download PDFInfo
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- CN214956320U CN214956320U CN202121488469.6U CN202121488469U CN214956320U CN 214956320 U CN214956320 U CN 214956320U CN 202121488469 U CN202121488469 U CN 202121488469U CN 214956320 U CN214956320 U CN 214956320U
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- plate body
- resistor
- protection device
- refrigeration
- magnetic bias
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- 230000001629 suppression Effects 0.000 title abstract description 6
- 238000005057 refrigeration Methods 0.000 claims description 28
- 230000017525 heat dissipation Effects 0.000 claims description 17
- 239000002826 coolant Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002309 gasification Methods 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model relates to a protection device is used in suppression of transformer direct current magnetic biasing, its characterized in that: the resistor comprises a resistor and an insulating part, wherein the resistor consists of a plurality of layers of resistor bodies which are distributed in an S shape and are sequentially connected in series, the insulating part is used for mounting the resistor, and a positive connecting terminal and a negative connecting terminal are respectively arranged on the upper layer and the lower layer of the resistor; the utility model has the advantages that: high resistance and small occupied space.
Description
Technical Field
The utility model relates to a resistor technical field, in particular to protection device is used in suppression of transformer direct current magnetic biasing.
Background
When a single-stage earth loop runs due to a line fault in a direct-current transmission project, direct-current flowing into the earth can directly influence a neutral point direct grounding transformer near a grounding pole to cause direct-current magnetic biasing. Once the transformer generates direct current magnetic biasing, harmonic waves are increased, noise vibration is intensified, damage is increased, and safe operation of the transformer is endangered.
At present, the method for solving the direct current magnetic biasing is to use a resistance current limiting device, and a high-voltage high-power resistor with voltage up to thousands of volts and power up to dozens of kilowatts on the market at present is usually realized in a series-parallel connection mode by adopting a plurality of groups of common high-power resistors.
However, the resistor is disposed in such a manner that the volume and the weight of the resistor are large, and the wiring and installation of a plurality of sets of resistors are heavy.
Moreover, when the conventional resistance current limiting device (for example, CN213043438U) is used, a large amount of heat is generated, if the heat cannot be dissipated in time, the resistance sheet may be deformed, and the deformation of the resistance sheet may cause the mutual contact of the resistance sheets, thereby causing a short-circuit fault, and even a safety accident.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a protection device is used in transformer direct current magnetic biasing suppression aims at solving the problem that appears in the above-mentioned background art.
The technical scheme of the utility model is realized like this: a protection device for suppressing direct current magnetic bias of a transformer is characterized in that: the resistor comprises a resistor and an insulating part, wherein the resistor is composed of a plurality of layers of resistor bodies which are distributed in an S shape and are sequentially connected in series, the insulating part is used for installing the resistor, and a positive connecting terminal and a negative connecting terminal are respectively arranged on the upper layer and the lower layer of the resistor.
Preferably: the first plate body and the second plate body are arranged at intervals and can be fixed through a connecting piece, and a plurality of rows of positioning notches for inserting the joint of the resistor bodies are formed in the first plate body and the second plate body.
Preferably: the positioning and inserting strip comprises a plurality of sliding grooves which sequentially penetrate through the positioning notches of the rows and a sliding strip which is slidably connected into the sliding grooves, a plurality of first grooves which penetrate through the two sides of the sliding strip are formed in the sliding strip, a second groove is formed in the bottom of the first groove, an elastic piece is arranged in the second groove, and an insulating block connected with the elastic piece is arranged in the first groove.
Preferably: and a positioning area is concavely arranged on the insulating block.
Preferably: the first plate body and the second plate body can be provided with adjusting holes for the connecting pieces to pass through, the connecting pieces are adjusting screw rods, and at least two adjusting nuts are arranged on the adjusting screw rods.
Preferably: including install in refrigeration module on the insulating part, the inside refrigeration chamber and the heat dissipation chamber that is equipped with a mutual intercommunication of refrigeration module at least, and the refrigeration intracavity is equipped with the coolant liquid, the coolant liquid of refrigeration intracavity is heated the gasification and gets into the heat dissipation intracavity to the intracavity is cooled down to the refrigeration to the back liquefaction of heat dissipation intracavity back flow.
Preferably: the top cavity wall of the refrigeration cavity is designed to be an arc surface.
The utility model has the advantages that:
the utility model connects a plurality of resistance bodies in series, and can accommodate more resistance bodies (the resistance value of the resistance can be improved) in the same occupied space through the distribution of S lines, and simultaneously, the utility model has only one group of terminal interfaces (namely a positive connecting terminal and a negative connecting terminal), thereby reducing the workload of wiring;
moreover, this embodiment has still set up refrigeration module, and refrigeration module can reduce the heat that produces because of the work of resistor, ensures its life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic partial cross-sectional view of a slide bar according to embodiment 1 of the present invention;
fig. 3 is a schematic distribution diagram of positioning notches on the first plate body or the second plate body in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1-3, the utility model discloses a protection device is used in suppression of transformer direct current magnetic biasing the utility model discloses in the embodiment, include the resistor that the resistive element 10 that distributes and establish ties in proper order with the S-shaped by a plurality of layers constitutes and supply the insulator 20 of resistor installation, resistor 10 upper strata and lower floor are equipped with positive terminal 100 and negative terminal 101 respectively.
In the embodiment of the present invention, the insulation member 20 is disposed at an interval between the first plate 201 and the second plate 202, the first plate 201 and the second plate 202 can be fixed by a connecting member, and a plurality of positioning notches 20a are disposed on the first plate 201 and the second plate 202 for inserting the connecting portion 10a of the resistor 10.
The utility model discloses in the embodiment, still including locating on first plate body 201 and the second plate body 202 and slidable location cutting, the location cutting include that a plurality of pass in proper order each row of spout 40 of locating the breach and slidable connection in draw runner 41 in the spout 40, be equipped with the first recess 42 that a plurality of all run through draw runner 41 both sides on the draw runner 41, and the tank bottom of first recess 42 is equipped with second recess 43, be equipped with elastic component 44 in the second recess 43, and be equipped with in the first recess 42 with the insulating block 45 that elastic component 44 connects.
In the embodiment of the present invention, the insulation block 45 is provided with a positioning area 46 in a concave manner.
In the embodiment of the present invention, the first plate 201 and the second plate 202 may have adjusting holes for the connecting member to pass through, the connecting member is the adjusting screw 30, and the adjusting screw 30 is provided with at least two adjusting nuts 31.
Referring to fig. 1 to 3, in the present embodiment, in order to reduce the occupied space of the resistor on the premise of increasing the resistance value, each resistor is distributed in an S shape, and adjacent resistors are sequentially connected in series, so that the occupied space can be reduced, and in addition, in the present embodiment, positioning notches are further provided on the first plate body and the second plate body, the positioning notches can be penetrated by the connection positions of the resistors, and the positioning notches can be used for positioning each bending position of the resistor, so that when the resistor is used, the occurrence of vibration caused by high voltage and strong current can be avoided, and the resistor can be ensured to be used stably;
in addition, in this embodiment, the first plate body and the second plate body are respectively provided with a positioning insertion strip penetrating through the connection position of the resistor body, the positioning insertion strip is used for further positioning the resistor to ensure stable use of the resistor, in this embodiment, the sliding strip slides in the sliding groove until the connection position of each insulating block and the resistor body corresponds to each other, at this time, the adjustment screw is used for adjustment, and the connection position of the resistor body is in contact with the insulating block, so that installation is completed, the elastic part (which can be a spring) arranged in the second groove can absorb vibration generated by operation of the resistor, the stability is further improved, and the matching effect of the connection position of the insulating block and the resistor body can be ensured by the positioning area; moreover, this embodiment adjusting screw can adjust the distance between first plate body and the second plate body, not only can the easy to assemble resistor, can also be suitable for not unidimensional resistor.
Example 2 is different from example 1 in that
As shown in fig. 4, in the embodiment of the present invention, including install in refrigeration module 5 on insulating part 20, refrigeration module 5 is inside to be equipped with a refrigeration chamber 50 and heat dissipation chamber 51 that communicate each other at least, and be equipped with coolant liquid 52 in refrigeration chamber 50, coolant liquid 52 in refrigeration chamber 50 is heated gasification and gets into in heat dissipation chamber 51 to in heat dissipation chamber 51 heat dissipation back liquefaction flows back to in refrigeration chamber 50.
In the embodiment of the present invention, the top cavity wall of the refrigeration cavity 50 is an arc surface.
In the embodiment of the present invention, a flow guiding block 55 is disposed between the refrigeration cavity 50 and the heat dissipation cavity 51.
In this embodiment, the cavity top of the heat dissipation cavity is set to be curved (in this embodiment, it is an outward convex curved surface, and it may also be an inward concave convex surface), and its purpose is that, after the cooling liquid is liquefied in the heat dissipation cavity, a part of the cooling liquid will converge to a lower position along the cavity top of the heat dissipation cavity and flow back to the refrigeration cavity, so as to improve the convergence efficiency of the cooling liquid.
The utility model discloses a refrigeration module mainly relies on the coolant liquid in the refrigeration chamber to go on, and the coolant liquid absorbs the gasification of heat and gets into the heat dissipation chamber to the circulation of accomplishing is used to the refrigeration intracavity in heat dissipation intracavity back liquefaction backward flow.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A protection device for suppressing direct current magnetic bias of a transformer is characterized in that: the method comprises the following steps:
the resistor is composed of a plurality of layers of resistor bodies which are distributed in an S shape and are sequentially connected in series;
an insulator for mounting the resistor;
the upper layer and the lower layer of the resistor are respectively provided with a positive connecting terminal and a negative connecting terminal.
2. The protection device for suppressing the direct current magnetic bias of the transformer according to claim 1, characterized in that: the insulating member includes:
the first plate body and the second plate body are arranged at intervals;
the connecting piece is used for fixing the first plate body and the second plate body;
wherein, a plurality of rows of positioning gaps for the connection part of the resistor bodies to insert are arranged on the first plate body and the second plate body.
3. The protection device for suppressing the direct current magnetic bias of the transformer according to claim 2, characterized in that: further comprising:
the positioning inserting strip is arranged on the first plate body and the second plate body in a sliding manner;
wherein, the location cutting includes:
the sliding groove is provided with a plurality of sliding grooves which sequentially penetrate through the positioning notches of the rows;
the sliding strip is arranged in the sliding groove in a sliding connection mode;
the first groove is provided with a plurality of grooves which penetrate through two sides of the sliding strip;
the second groove is arranged at the bottom of the first groove;
and the elastic piece is arranged in the second groove, and an insulating block connected with the elastic piece is arranged in the first groove.
4. The protection device for suppressing the DC magnetic bias of the transformer according to claim 3, wherein: and a positioning area is concavely arranged on the insulating block.
5. The protection device for suppressing the DC magnetic bias of the transformer according to claim 4, wherein: the first plate body and the second plate body can be provided with adjusting holes for the connecting pieces to pass through, the connecting pieces are adjusting screw rods, and at least two adjusting nuts are arranged on the adjusting screw rods.
6. The protection device for suppressing the DC magnetic bias of the transformer according to any one of claims 1 to 5, wherein: further comprising:
the refrigeration module, the refrigeration module install in on the insulating part, and inside refrigeration chamber and the heat dissipation chamber that is equipped with one mutual intercommunication at least, and be equipped with the coolant liquid in the refrigeration intracavity, the coolant liquid of refrigeration intracavity is heated the gasification and gets into the heat dissipation intracavity to the intracavity is cooled down to the refrigeration to the liquefaction backward flow after the heat dissipation of heat dissipation intracavity.
7. The protection device for suppressing the DC magnetic bias of the transformer according to claim 6, wherein: the top cavity wall of the refrigeration cavity is designed to be an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121488469.6U CN214956320U (en) | 2021-07-01 | 2021-07-01 | Protection device for transformer direct current magnetic bias suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121488469.6U CN214956320U (en) | 2021-07-01 | 2021-07-01 | Protection device for transformer direct current magnetic bias suppression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214956320U true CN214956320U (en) | 2021-11-30 |
Family
ID=79076059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121488469.6U Expired - Fee Related CN214956320U (en) | 2021-07-01 | 2021-07-01 | Protection device for transformer direct current magnetic bias suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214956320U (en) |
-
2021
- 2021-07-01 CN CN202121488469.6U patent/CN214956320U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211130 |