CN209088542U - A kind of harmonic elimination apparatus - Google Patents
A kind of harmonic elimination apparatus Download PDFInfo
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- CN209088542U CN209088542U CN201822274525.0U CN201822274525U CN209088542U CN 209088542 U CN209088542 U CN 209088542U CN 201822274525 U CN201822274525 U CN 201822274525U CN 209088542 U CN209088542 U CN 209088542U
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- harmonic elimination
- elimination apparatus
- resistance structure
- cover
- electric resistance
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Abstract
The utility model discloses a kind of harmonic elimination apparatus, comprising: crust of the device, described device shell is interior to have hollow cavity, has heat release hole on described device shell；It is set to the intracorporal electric resistance structure of the hollow cavity (7)；It is set to described device cover top portion and blocks the rain cover (2) of the heat release hole；High-voltage terminal (1), the high-voltage terminal (1) are located at side of the rain cover (2) far from described device shell and connect with the electric resistance structure (7).The case where harmonic elimination apparatus provided by the utility model radiates to the electric resistance structure inside crust of the device by above-mentioned setting, effectively increases the service life of harmonic elimination apparatus, and avoiding device shell cracks, it is ensured that the safety in utilization of harmonic elimination apparatus.
Description
Technical field
The utility model relates to resonance eliminator equipment technical field, in particular to a kind of harmonic elimination apparatus.
Background technique
Electromagnetic potential transformer in 6kV~35kV neutral point ungrounded electric network, because close a floodgate charging, single-phase earthing or
The excitation of the factors such as arc grounding can make voltage transformer supersaturated, it is possible to create ferro-resonance over-voltage, to occur opposite
The abnormal phenomenon such as ground voltage is unstable, ground connection instruction malfunctions, the fusing of voltage transformer high-voltage fuse, will lead to electricity when serious
The case where pressure mutual inductor is burnt, then causes other accident.
Harmonic elimination apparatus is concatenated in transformer high voltage side neutral point, it is non-linear electromagnetic potential transformer can be effectively eliminated
The ferro-resonance over-voltage of each secondary resonance caused by excitation characteristic (saturation), limitation single-phase short circuit ground connection and arc grounding in the case of
The overcurrent for flowing through voltage transformer protects voltage transformer from damage, guarantees the safe and reliable operation of power grid.
But harmonic elimination apparatus is in the long-term use, inevitably there are the feelings of internal resistance structure heating heating
The case where condition, influences the service life of harmonic elimination apparatus, and the crust of the device cracking of harmonic elimination apparatus is resulted even in when serious, influences to make
Use safety.
Therefore, how to improve service life, it is ensured that safety in utilization, it has also become those skilled in the art are urgently to be resolved to be asked
Topic.
Utility model content
In view of this, the present invention provides a kind of harmonic elimination apparatus, to improve service life, it is ensured that safety in utilization.
To achieve the above object, the utility model provides the following technical solutions:
A kind of harmonic elimination apparatus, comprising:
Crust of the device, described device shell is interior to have hollow cavity, has heat release hole on described device shell；
It is set to the intracorporal electric resistance structure of the hollow cavity；
It is set to described device cover top portion and blocks the rain cover of the heat release hole；
High-voltage terminal, the high-voltage terminal be located at side of the rain cover far from described device shell and with it is described
Electric resistance structure connection.
It preferably, further include spring in above-mentioned harmonic elimination apparatus, the electric resistance structure is fixed on described hollow by the spring
The inside top surface of cavity.
Preferably, in above-mentioned harmonic elimination apparatus, described device shell includes insulating coating, is set to the insulating coating upper end
The upper end cover in face and the lower cover for being set to the insulating coating lower end surface；
The heat release hole is set on the upper end cover and the lower cover.
Preferably, in above-mentioned harmonic elimination apparatus, the heat release hole being arranged on the upper end cover and the lower cover is described in
Crust of the device it is axially symmetric.
Preferably, in above-mentioned harmonic elimination apparatus, there is gap between the rain cover and the upper end cover.
It preferably, further include being set to below the lower cover, for making the lower cover and peace in above-mentioned harmonic elimination apparatus
There are the mounting brackets in gap between dress face.
Preferably, in above-mentioned harmonic elimination apparatus, the mounting bracket is fixedly connected by bolt with the lower cover.
It preferably, further include the cooling fin being set on the electric resistance structure in above-mentioned harmonic elimination apparatus.
Preferably, in above-mentioned harmonic elimination apparatus, the electric resistance structure is formed by stacking by multiple resistor discs；
The cooling fin is provided between the two neighboring resistor disc.
Preferably, in above-mentioned harmonic elimination apparatus, radiating groove is provided on the cooling fin.
It can be seen from the above technical scheme that harmonic elimination apparatus provided by the utility model, during the work time, high-voltage connecting
The connection of the high-pressure side neutral point of line end and voltage transformer, it is undermined to avoid voltage transformer.Due to having on crust of the device
Heat release hole avoids electric resistance structure heating up excessive in order to which the heat of electric resistance structure is rejected heat to outside by heat release hole
Situation；Also, rain cover blocks heat release hole, and outside water or impurity is avoided to enter in hollow cavity by heat release hole.This is practical new
The harmonic elimination apparatus that type provides radiates to the electric resistance structure inside crust of the device, is effectively increased by above-mentioned setting
The case where service life of harmonic elimination apparatus, avoiding device shell cracks, it is ensured that the safety in utilization of harmonic elimination apparatus.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the topology view of the harmonic elimination apparatus in the utility model embodiment.
Specific embodiment
The utility model discloses a kind of harmonic elimination apparatus, to improve service life, it is ensured that safety in utilization.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the utility model embodiment provides a kind of harmonic elimination apparatus, including crust of the device, electric resistance structure 7,
Rain cover 2 and high-voltage terminal 1.There is hollow cavity in crust of the device, there is heat release hole on crust of the device；Electric resistance structure 7 is set
It is placed in hollow cavity；Rain cover 2 is set at the top of crust of the device and blocks heat release hole；It is remote that high-voltage terminal 1 is located at rain cover 2
It side from crust of the device and is connect with electric resistance structure 7.
Harmonic elimination apparatus provided by the embodiment of the utility model, during the work time, high-voltage terminal 1 and voltage transformer
The connection of high-pressure side neutral point, it is undermined to avoid voltage transformer.Due to having heat release hole on crust of the device, in order to by resistance
The heat of structure 7 rejects heat to outside by heat release hole, avoids the heating up excessive situation of electric resistance structure；Also, rain cover 2 hides
Heat release hole is kept off, outside water or impurity is avoided to enter in hollow cavity by heat release hole.Harmonic elimination provided by the embodiment of the utility model
Device radiates to the electric resistance structure 7 inside crust of the device, effectively increases harmonic elimination apparatus by above-mentioned setting
The case where service life, avoiding device shell cracks, it is ensured that the safety in utilization of harmonic elimination apparatus.
Further, fixed for convenience in above-mentioned harmonic elimination apparatus, it further include spring 4, spring 4 is fixed by electric resistance structure 7
In the inside top surface of hollow cavity.Made on the basis of ensuring that electric resistance structure 7 is connected to high-voltage terminal 1 by above-mentioned setting
It obtains there are gap between inside top surface of the electric resistance structure 7 apart from hollow cavity, the heat dissipation for having further facilitated electric resistance structure 7 is grasped
Make.
In the present embodiment, crust of the device includes insulating coating 5, the upper end cover 3 for being set to 5 upper surface of insulating coating and setting
Lower cover 9 in 5 lower end surface of insulating coating；Heat release hole is set on upper end cover 3 and lower cover 9.By above-mentioned setting, in order to
Cooling air is entered by the heat release hole on lower cover 9, after electric resistance structure 7 absorbs heat, is arranged by the heat release hole on upper end cover 3
Out.Pass through above-mentioned setting, it is ensured that the smooth outflow of cooling air effectively increases cooling effect.
Further, the heat release hole being arranged on upper end cover 3 and lower cover 9 is along the axially symmetric of crust of the device.By above-mentioned
Setting, has further facilitated the smooth outflow of cooling air, has also further effectively increased cooling effect.
In order to further increase heat dissipation effect, there is gap between rain cover 2 and upper end cover 3.By above-mentioned setting, with side
Just cooling air passes through the heat release hole on upper end cover 3.
In the present embodiment, insulating coating 5 is porcelain housing.
Electric resistance structure 7 is fired using by the mixing of the raw materials such as silicon carbide, talcum, quartz, feldspar, molding and high temperature,
Both ends of the surface are coated with metal electrode, and side applies glaze.
Cooling fin 6 is made of thermal coefficient and the high material of electric conductivity, does not do concrete restriction to material herein.
Harmonic elimination apparatus provided by the embodiment of the utility model further includes being set to 9 lower section of lower cover, for making lower cover 9
There are the mounting brackets 8 in gap between mounting surface.By above-mentioned setting, to facilitate cooling air to pass through dissipating on lower cover 9
Hot hole.
In the present embodiment, bolt mounting holes are provided in mounting bracket 8.By above-mentioned setting, in order to which mounting bracket 8 is logical
Bolt is crossed to be fixedly connected with lower cover 9.
Harmonic elimination apparatus provided by the embodiment of the utility model further includes the cooling fin 6 being set on electric resistance structure 7.Pass through
Cooling fin 6 is set, heat dissipation effect is effectively increased.Wherein, cooling fin 6 is arranged perpendicular to the axial direction of electric resistance structure 7.
In order to further increase heat dissipation effect, electric resistance structure 7 is formed by stacking by multiple resistor discs；Two neighboring resistor disc it
Between be provided with cooling fin 6.That is, the quantity of cooling fin 6 is multiple, and it is evenly arranged (the identical feelings of the structure of multiple resistor discs
Under condition), effectively increase heat dissipation effect.
Further, radiating groove is provided on cooling fin.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (10)
1. a kind of harmonic elimination apparatus characterized by comprising
Crust of the device, described device shell is interior to have hollow cavity, has heat release hole on described device shell；
It is set to the intracorporal electric resistance structure of the hollow cavity (7)；
It is set to described device cover top portion and blocks the rain cover (2) of the heat release hole；
High-voltage terminal (1), the high-voltage terminal (1) be located at the rain cover (2) far from described device shell side and
It is connect with the electric resistance structure (7).
2. harmonic elimination apparatus as described in claim 1, which is characterized in that further include spring (4), the spring (4) is by the electricity
The inside top surface of the hollow cavity is fixed in resistance structure (7).
3. harmonic elimination apparatus as described in claim 1, which is characterized in that described device shell includes insulating coating (5), is set to
The upper end cover (3) of insulating coating (5) upper surface and the lower cover (9) for being set to the insulating coating (5) lower end surface；
The heat release hole is set on the upper end cover (3) and the lower cover (9).
4. harmonic elimination apparatus as claimed in claim 3, which is characterized in that be arranged on the upper end cover (3) and the lower cover (9)
The heat release hole along the axially symmetric of described device shell.
5. harmonic elimination apparatus as claimed in claim 3, which is characterized in that have between the rain cover (2) and the upper end cover (3)
There is gap.
6. harmonic elimination apparatus as claimed in claim 3, which is characterized in that further include being set to below the lower cover (9), be used for
Make between the lower cover (9) and mounting surface that there are the mounting bracket in gap (8).
7. harmonic elimination apparatus as claimed in claim 6, which is characterized in that the mounting bracket (8) passes through bolt and the lower end
Lid (9) is fixedly connected.
8. such as the described in any item harmonic elimination apparatus of claim 1-7, which is characterized in that further include being set to the electric resistance structure
(7) cooling fin (6) on.
9. harmonic elimination apparatus as claimed in claim 8, which is characterized in that the electric resistance structure (7) be superimposed by multiple resistor discs and
At；
The cooling fin (6) are provided between the two neighboring resistor disc.
10. harmonic elimination apparatus as claimed in claim 9, which is characterized in that be provided with radiating groove on the cooling fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274525.0U CN209088542U (en) | 2018-12-28 | 2018-12-28 | A kind of harmonic elimination apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822274525.0U CN209088542U (en) | 2018-12-28 | 2018-12-28 | A kind of harmonic elimination apparatus |
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| Publication Number | Publication Date |
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| CN209088542U true CN209088542U (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822274525.0U Active CN209088542U (en) | 2018-12-28 | 2018-12-28 | A kind of harmonic elimination apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706878A (en) * | 2019-11-12 | 2020-01-17 | 浙江全瑞本科技股份有限公司 | Voltage transformer removes magnetism protective structure |
-
2018
- 2018-12-28 CN CN201822274525.0U patent/CN209088542U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706878A (en) * | 2019-11-12 | 2020-01-17 | 浙江全瑞本科技股份有限公司 | Voltage transformer removes magnetism protective structure |
| CN110706878B (en) * | 2019-11-12 | 2021-06-08 | 浙江全瑞本科技股份有限公司 | Voltage transformer removes magnetism protective structure |
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