CN207572894U - For the passive zero sequence current eliminating device of electric power - Google Patents
For the passive zero sequence current eliminating device of electric power Download PDFInfo
- Publication number
- CN207572894U CN207572894U CN201721304132.9U CN201721304132U CN207572894U CN 207572894 U CN207572894 U CN 207572894U CN 201721304132 U CN201721304132 U CN 201721304132U CN 207572894 U CN207572894 U CN 207572894U
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- CN
- China
- Prior art keywords
- threading hole
- face
- cylinder groove
- rectangular slab
- silica gel
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Abstract
The utility model provides the passive zero sequence current eliminating device for electric power, including housing and thin cylinder groove；The case top offers the threading hole being connected at two with housing cavity with its longitudinal centre line in symmetry shape；Respectively it is connected on the top of the end face of the rectangular slab by rubber corrugated stretchable sheet described in one group with the corresponding threading hole end surface in its position at two.The utility model is after zero curve cable passes through threading hole to be electrically connected with the passive zero sequence current eliminating device of the utility model, under the bounce of spring, the silica gel block that two pieces of rectangular slabs are adhered to wraps up zero curve cable, two pieces of silica gel blocks deform under the bounce of spring, its outer surface is tightly attached on zero curve cable and is tightly attached onto with the outer profile of adjacent silica gel block, sealing function is played, extraneous dust can effectively be avoided to enter the inner cavity of housing from threading hole.
Description
Technical field
The utility model belongs to neutral line current Treatment process field, and the more particularly, to passive zero-sequence current of electric power is eliminated
Device.
Background technology
The development of power product highlights increasingly with the problem of neutral line current, to find out its cause, mainly there is three-phase injustice
Neutral line current caused by weighing apparatus is exceeded, neutral line current caused by the harmonic wave of the three times frequency is exceeded etc., and neutral line current arrester is also known as：Zero
Sequence wave filter.When being balanced used in threephase load, the essential product of zero line over-current is caused.It is to solve every profession and trade electrical equipment in three-phase
Load balance, zero line over-current cause the high-tech energy-conserving product of equipment fault and security risk.
Based on above-mentioned, the inventors discovered that, existing neutral line current arrester is as shown in Figure 9：01 top of shell opens up
Have threading hole 02 at two, when in use zero curve cable pass through this at two threading hole 02 be connected with neutral line current arrester；It but should
The threading hole 02 that two places open up has no and blocks locking device accordingly, it is caused to be constantly in open state, extraneous dust
The inner cavity of neutral line current arrester is easily entered at this, its interior a large amount of dust aggregation of intracavitary is caused, disappears to neutral line current
Except the proper heat reduction of device causes larger obstruction, and generation the phenomenon that may easily cause short trouble.
Then, in view of this, improvement is studied for existing structure and missing, the passive zero sequence for electric power is provided
Current eliminating device, to achieve the purpose that with more more practical value.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides the passive zero sequence current eliminating device for electric power, with
Solve existing neutral line current arrester as shown in Figure 9：01 top of shell offers threading hole 02 at two, when in use zero curve
Cable pass through this at two threading hole 02 be connected with neutral line current arrester；But the threading hole 02 that two place opens up, has no phase
That answers blocks locking device, it is caused to be constantly in open state, and extraneous dust easily enters neutral line current at this and disappears
Except the inner cavity of device, its interior a large amount of dust aggregation of intracavitary is caused, larger resistance is caused to the proper heat reduction of neutral line current arrester
The problem of generation for the phenomenon that hindering, and may easily causing short trouble.
The utility model is used for the purpose and effect of the passive zero sequence current eliminating device of electric power, by technology hand in detail below
Section is reached：
For the passive zero sequence current eliminating device of electric power, including housing, threading hole, baffle, thick cylinder groove, silica gel block,
Rectangular slab, thin cylinder, spring, rubber corrugated stretchable sheet and thin cylinder groove；The case top is with its longitudinal centre line in symmetrical
Shape offers the threading hole being connected at two with housing cavity；The case top opened up two at threading hole opening
The rectangular shape of contour structure；The thick circle evenly distributed at three is respectively offered on the front and rear sides end face of the threading hole
Column slot, and the inner face shaft core position of thick cylinder groove offers the thin cylinder groove being connected at one with thick cylinder groove, and thin
The depth of cylinder groove is consistent with the depth of thick cylinder groove；It is opposite to be each provided with two pieces of positions for the inner end of the threading hole at two
It answers, the rectangular slab that structure is consistent；The corresponding face in the position of the rectangular slab is vertical plane at two, and this is vertical flat
Face is respectively stained with one piece of silica gel block consistent with rectangular slab length, height；The position of the rectangular slab is corresponding at two
Respectively it is welded with three evenly distributed thin cylinders on the other end in face, and the diameter of thin cylinder and thin cylinder groove is straight
Diameter is consistent, and the length of thin cylinder is 1 point 5 times of the depth of thin cylinder groove；The rectangular slab is respectively welded by it at two
The thin cylindrical slid connect is connected in the thin cylinder groove opened up with the corresponding threading hole end surface in its position；The rectangle at two
Plate is respectively connected by spring described in three groups with the inner face of thick cylinder groove that the corresponding threading hole end surface in its position is opened up
It connects；It is respectively corresponding by rubber corrugated stretchable sheet described in one group and its position on the top of the end face of the rectangular slab at two
Threading hole end surface is connected.
Further, the wall thickness that the case top threads hole location is 5 times of housing other positions wall thickness.
Further, the wall thickness of the case top threading hole location is more than the height of rectangular slab, and the top of rectangular slab
End face is less than housing tip face, and the length of the rectangular slab is consistent with the length of threading hole.
Further, end top is respectively connected with one piece of baffle, and the top of baffle at left and right sides of the threading hole
The top end face of end face and housing is in same plane, therefore baffle blocks the left and right sides end face edge placement of threading hole.
Further, the silica gel block uses hollow structure, and the width of silica gel block normal state accounts for threading hole width
A quarter.
Compared with prior art, the utility model has the advantages that：
1. the inner end of threading hole is each provided with two pieces of rectangles that position is corresponding, structure is consistent at the utility model two
Plate, and the corresponding face in position of rectangular slab is vertical plane at two, and the vertical plane be respectively stained with it is one piece long with rectangular slab
The consistent silica gel block of degree, height, conducive to threading hole being passed through to be eliminated with the passive zero-sequence current of the utility model when zero curve cable
After device is electrically connected, under the bounce of spring, the silica gel block that two pieces of rectangular slabs are adhered to wraps up zero curve cable, because
Silica gel block uses hollow structure, and the width of silica gel block normal state accounts for a quarter of threading hole width, therefore in the anti-of spring
Two pieces of silica gel blocks deform under elastic force, and outer surface is tightly attached to the foreign steamer on zero curve cable and with adjacent silica gel block
Exterior feature is tightly attached onto, and plays sealing function, and extraneous dust can effectively be avoided to enter the inner cavity of housing from threading hole；Into
One step, end top is respectively connected with a block baffle, and the top end face of the top end face of baffle and housing at left and right sides of threading hole
In same plane, therefore baffle blocks the left and right sides end face edge placement of threading hole, outer conducive to preventing by the setting of baffle
Gap present in left and right sides end face edge placement of boundary's dust from threading hole enters the inner cavity of housing.
Description of the drawings
Fig. 1 is that the axis of the utility model regards structure diagram.
Fig. 2 be the utility model Fig. 1 in partial enlargement structural representation at A.
Fig. 3 is the threading hole location structure diagram of the utility model.
Fig. 4 is the main structure diagram of the utility model.
Fig. 5 be the utility model Fig. 4 in partial enlargement structural representation at B.
Fig. 6 is the side structure schematic view of the utility model.
Fig. 7 be the utility model Fig. 6 in partial enlargement structural representation at C.
Fig. 8 be the utility model Fig. 7 in partial enlargement structural representation at D.
Fig. 9 is passive zero sequence current eliminating device structure diagram on existing market.
In Fig. 1-8：1- housings, 2- threading holes, 3- baffles, the thick cylinder grooves of 4-, 5- silica gel blocks, 6- rectangular slabs, the thin cylinders of 7-,
8- springs, 9- rubber corrugated stretchable sheets, the thin cylinder grooves of 401-.
In Fig. 9：01- housings, 02- threading holes.
Specific embodiment
The utility model is described further below in conjunction with attached drawing：
Embodiment：
As shown in attached drawing 1 to attached drawing 8：
The utility model provide for electric power passive zero sequence current eliminating device, including housing 1, threading hole 2, baffle 3,
Thick cylinder groove 4, silica gel block 5, rectangular slab 6, thin cylinder 7, spring 8, rubber corrugated stretchable sheet 9 and thin cylinder groove 401；The shell
1 top of body offers the threading hole 2 being connected at two with 1 inner cavity of housing with its longitudinal centre line in symmetry shape；The shell
The rectangular shape of opening contours structure of threading hole 2 at two opened up at the top of body 1；The front and rear sides end face of the threading hole 2
On respectively offer the thick cylinder groove 4 evenly distributed at three, and the inner face shaft core position of thick cylinder groove 4 is offered at one
The thin cylinder groove 401 being connected with thick cylinder groove 4, and the thin depth of cylinder groove 401 and the depth phase one of thick cylinder groove 4
It causes；The inner end of the threading hole 2 is each provided with the rectangular slab 6 that two pieces of positions are corresponding, structure is consistent at two；At two
The corresponding face in position of the rectangular slab 6 is vertical plane, and the vertical plane be respectively stained with one piece with 6 length of rectangular slab,
The highly consistent silica gel block 5；At two three are respectively welded on the other end in the corresponding face in position of the rectangular slab 6
The evenly distributed thin cylinder 7 of root, and the diameter of thin cylinder 7 is consistent with the diameter of thin cylinder groove 401, the length of thin cylinder 7
Spend the depth for thin cylinder groove 401 1 point 5 times；The rectangular slab 6 is respectively slided by the thin cylinder 7 that it is welded at two
It is connected in the thin cylinder groove 401 that 2 end face of threading hole corresponding with its position is opened up；The rectangular slab 6 is each logical at two
The inner face of thick cylinder groove 4 that 2 end face of threading hole corresponding with its position of spring 8 described in three groups is opened up is crossed to be connected；Two
Locate on the top of the end face of the rectangular slab 6 respectively by rubber corrugated stretchable sheet 9 described in one group with its position is corresponding wears
2 end face of string holes is connected.
Wherein, the wall thickness at 1 top threading hole of housing, 2 position is 5 times of 1 other positions wall thickness of housing, conducive to thick
Opening up or placing for the corresponding part of 4 grade of cylinder groove, plays corresponding sealing function.
Wherein, the wall thickness at 1 top threading hole of housing, 2 position is more than the height of rectangular slab 6, and the top of rectangular slab 6
End face is less than 1 top end face of housing, and the length of the rectangular slab 6 is consistent with the length of threading hole 2.
Wherein, 2 left and right sides end top of threading hole is respectively connected with one piece of baffle 3, and the top of baffle 3
End face and the top end face of housing 1 are in same plane, therefore baffle 3 blocks the left and right sides end face edge placement of threading hole 2, is conducive to
Prevent the gap present in left and right sides end face edge placement of the extraneous dust from threading hole 2 from entering the inner cavity of housing 1.
Wherein, the silica gel block 5 uses hollow structure, and the width of 5 normal state of silica gel block accounts for 2 width of threading hole
A quarter, by the setting of its material and structure, conducive under the bounce of spring 8 two pieces of silica gel blocks 5 deform, outside
Contoured surface is tightly attached on zero curve cable and is tightly attached onto with the outer profile of adjacent silica gel block 5, plays sealing and makees
With.
The specifically used mode of the present embodiment and effect：
When zero curve cable is needed across threading hole 2, staff detaches two pieces of rectangular slabs 6 at 2 position of threading hole,
So that the thin cylinder 7 that two pieces of rectangular slabs 6 are welded slides, and institute's connecting spring 8 is compressed, and works as zero curve along thin cylinder groove 401
After cable passes through threading hole 2, staff can decontrol two pieces of rectangular slabs 6, and two pieces of rectangular slabs 6 are rapid under the bounce of spring 8
Reduction, two pieces of 6 vertical planes of rectangular slab are respectively stained with one piece and 6 length of rectangular slab, highly consistent silica gel block 5, conducive to
After zero curve cable passes through threading hole 2 to be electrically connected with the passive zero sequence current eliminating device of the utility model, in the anti-of spring 8
Under elastic force, the silica gel block 5 that two pieces of rectangular slabs 6 are adhered to wraps up zero curve cable, because silica gel block 5 is using hollow structure, and
The width of 5 normal state of silica gel block accounts for a quarter of 2 width of threading hole, therefore two pieces of silica gel blocks 5 are sent out under the bounce of spring 8
Change shape, and outer surface is tightly attached on zero curve cable and is tightly attached onto with the outer profile of adjacent silica gel block 5,
Sealing function is played, extraneous dust can effectively be avoided to enter the inner cavity of housing 1, further, rectangle at two from threading hole 2
Respectively it is connected on the top of the end face of plate 6 by one group of rubber corrugated stretchable sheet 9,2 end face of threading hole corresponding with its position
It connects, prevents dust from entering shell from the gap between 2 end face of rectangular slab 6 and threading hole by blocking for rubber corrugated stretchable sheet 9
The inner cavity of body 1, further, 2 left and right sides end top of threading hole are respectively connected with a block baffle 3, and the top of baffle 3
Face and the top end face of housing 1 are in same plane, therefore baffle 3 blocks the left and right sides end face edge placement of threading hole 2, conducive to anti-
Only the gap present in left and right sides end face edge placement of the extraneous dust from threading hole 2 enters the inner cavity of housing 1.
The opening in technical solutions of the utility model using technical solution described in the utility model or those skilled in the art
It gives, designs similar technical solution, and reach above-mentioned technique effect, be to fall into the scope of protection of the utility model.
Claims (5)
1. for the passive zero sequence current eliminating device of electric power, it is characterised in that：The passive zero-sequence current for being used for electric power is eliminated
Device include housing, threading hole, baffle, thick cylinder groove, silica gel block, rectangular slab, thin cylinder, spring, rubber corrugated stretchable sheet and
Thin cylinder groove；The case top offered at two in symmetry shape with its longitudinal centre line be connected with housing cavity described in wear
String holes；The case top opened up two at threading hole the rectangular shape of opening contours structure；The threading hole it is front and rear
The thick cylinder groove evenly distributed at three is respectively offered on both sides of the face, and the inner face shaft core position of thick cylinder groove opens up
There is the thin cylinder groove being connected at one with thick cylinder groove, and the depth of thin cylinder groove is consistent with the depth of thick cylinder groove；
The inner end of the threading hole is each provided with the rectangular slab that two pieces of positions are corresponding, structure is consistent at two；It is described at two
The corresponding face in position of rectangular slab is vertical plane, and the vertical plane is respectively stained with one piece and rectangular slab length, height phase
The consistent silica gel block；Three uniformly rows are respectively welded at two on the other end in the corresponding face in the position of the rectangular slab
The thin cylinder of row, and the diameter of thin cylinder is consistent with the diameter of thin cylinder groove, the length of thin cylinder is thin cylinder groove
1 point 5 times of depth；The rectangular slab is respectively connected to corresponding with its position by the thin cylindrical slid that it is welded at two
The thin cylinder groove that is opened up of threading hole end surface in；The rectangular slab is respectively opposite with its position by spring described in three groups at two
The inner face of thick cylinder groove that the threading hole end surface answered is opened up is connected；It is each on the top of the end face of the rectangular slab at two
It is connected by rubber corrugated stretchable sheet described in one group with the corresponding threading hole end surface in its position.
2. it to be used for the passive zero sequence current eliminating device of electric power as described in claim 1, it is characterised in that：The case top is worn
The wall thickness of line hole location is 5 times of housing other positions wall thickness.
3. it to be used for the passive zero sequence current eliminating device of electric power as claimed in claim 1 or 2, it is characterised in that：The housing top
The wall thickness of portion's threading hole location is more than the height of rectangular slab, and the top end face of rectangular slab is less than housing tip face, the rectangle
The length of plate is consistent with the length of threading hole.
4. it to be used for the passive zero sequence current eliminating device of electric power as claimed in claim 1 or 2, it is characterised in that：The threading hole
Left and right sides end top is respectively connected with one piece of baffle, and the top end face of the top end face of baffle and housing is in same flat
Face, therefore baffle blocks the left and right sides end face edge placement of threading hole.
5. it to be used for the passive zero sequence current eliminating device of electric power as described in claim 1, it is characterised in that：The silica gel block uses
Hollow structure, and the width of silica gel block normal state accounts for a quarter of threading hole width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304132.9U CN207572894U (en) | 2017-10-11 | 2017-10-11 | For the passive zero sequence current eliminating device of electric power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304132.9U CN207572894U (en) | 2017-10-11 | 2017-10-11 | For the passive zero sequence current eliminating device of electric power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207572894U true CN207572894U (en) | 2018-07-03 |
Family
ID=62694870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721304132.9U Expired - Fee Related CN207572894U (en) | 2017-10-11 | 2017-10-11 | For the passive zero sequence current eliminating device of electric power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207572894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963922A (en) * | 2018-10-16 | 2018-12-07 | 安徽蓝德正华电子有限公司 | A kind of transformation cabinet wiring hole sealing structure |
-
2017
- 2017-10-11 CN CN201721304132.9U patent/CN207572894U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963922A (en) * | 2018-10-16 | 2018-12-07 | 安徽蓝德正华电子有限公司 | A kind of transformation cabinet wiring hole sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180703 Termination date: 20191011 |