CN205647237U - Can reduce vortex lowering the temperature's converter terminal block - Google Patents
Can reduce vortex lowering the temperature's converter terminal block Download PDFInfo
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- CN205647237U CN205647237U CN201620261743.9U CN201620261743U CN205647237U CN 205647237 U CN205647237 U CN 205647237U CN 201620261743 U CN201620261743 U CN 201620261743U CN 205647237 U CN205647237 U CN 205647237U
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- grooving
- converter
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Abstract
The utility model discloses a can reduce vortex lowering the temperature's converter terminal block, including terminal block body, binding post, the terminal block body is a box structure, and box structure backplate simultaneously sets up on the converter body, and binding post is installed to the another side, it is equipped with a plurality of wire hole and a plurality of entrance hole to correspond binding post position department at box structure front bezel, it has the grooving to open between the wire hole it has the grooving to open between the entrance hole. The utility model discloses a driving the grooving between the input entrance hole, between the output wire hole, can solve converter input cable, export the problem that the cable passed iron terminal block burble, simple structure, it is with low costs.
Description
Technical field
This utility model relates to converter terminal board research field, can reduce eddy current particularly to one and reduce temperature
The converter terminal board of degree.
Background technology
Coil outside a conductor, be passed through alternating current to coil, then coil just produces alternation magnetic
?.Owing to the conductor in the middle of coil equivalence can become a Guan Bi circuit enclosed at circumferencial direction, close circuit
In magnetic flux constantly change, so the circumferencial direction at conductor can produce induction electromotive force and faradism
Stream, sense of current is turn-taked along the circumferencial direction of conductor, just as the whirlpool of a circle circle, thus this in monoblock
Conductor generation electromagnetic induction and produce faradic phenomenon and be referred to as vortex phenomenon.The eddy current of conductor
Also can produce heat, if the resistivity of conductor is little, then the eddy current produced is very strong, and the heat of generation is the biggest.
Converter (Variable-frequency Drive, VFD) is application converter technique and microelectric technique,
The electric control appliance of ac motor is controlled by changing motor working power Frequency Patterns.Converter master
Will by rectification (AC-DC), filtering, inversion (direct current become exchange), brake unit, driver element,
Detector unit microprocessing units etc. form.Converter IGBT close to the inner portion cut-offs the voltage adjusting out-put supply
And frequency, provide its required supply voltage according to being actually needed of motor, and then reach energy-conservation, adjust
The purpose of speed, it addition, converter also has a lot of defencive functions, as crossed stream, overvoltage, overload protection etc..
Along with improving constantly of industrial automatization, converter have also been obtained application widely.
Binding post in converter is divided into major loop and controls loop two large divisions, the wherein terminal of major loop
Typically there are eight to nine, slightly difference, wherein converter three-phase input wires terminal according to producer is different
Being called for short L1, L2, L3, for connecing power supply, converter three-phase output wiring terminal is called for short U, V, W,
For connecing threephase asynchronous, it is also possible to have a ground connection, and two connect brake unit or
Direct current reactance.Wiring for convenience, above-mentioned binding post is arranged on terminal board.The end of major loop at present
Daughter board mainly has two kinds of structures, and one of which sees Fig. 1, and in the figure, irony terminal board 2 is arranged on frequency conversion
On device body 1, L1 cable 3, L2 cable 4, L3 cable 5 one end are connected with power supply, and the other end leads to respectively
Cross L1 cable entrance hole 10, L2 cable entrance hole 11, L3 cable entrance hole 12 and converter are internal is connected,
U cable 6, V cable 7, W cable 8 one end are connected with converter inside, and the other end is respectively by U outlet
Hole 13, V wire hole 14, W wire hole 15 are connected with threephase asynchronous.This terminal board is in frequency conversion
During device work, between input L1 cable, L2 cable, L3 cable and outfan U cable 6, V line
All produce alternating current between cable 7, W cable 8, induction electromotive force and faradism can be produced around cable
Stream, forms eddy current, and then makes terminal board inside produce the highest heat, cause terminal board heating thus temperature
Rising, severe patient can affect the normal work of converter.Another kind of structure sees Fig. 2, in the figure, and input
At end L1 cable 3, L2 cable 4, L3 cable 5, and outfan U cable 6, V cable 7, W line
One protective ring is the most additionally set at cable 8, to avoid the terminal board temperature rising problem caused because of eddy current, but this
Plant structure and improve the cost of former terminal board, add the complexity of installation.
Therefore, seek a kind of simple in construction, low cost, the end of the terminal board temperature caused by eddy current can be reduced
Daughter board, has important practical value.
Utility model content
The purpose of this utility model is that the shortcoming overcoming prior art is with not enough, it is provided that one can reduce eddy current
Reducing the converter terminal board of temperature, this terminal board solves converter cable and produces through during irony terminal board
Eddy current make the problem that irony terminal board temperature raises.
The purpose of this utility model is realized by following technical scheme: a kind of eddy current that can reduce reduces temperature
Converter terminal board, including terminal board body, binding post, described terminal board body is a box-structure,
Box-structure backboard one side is arranged on transducer body, and another side is provided with binding post；At box-structure
Header board corresponding wiring terminal position is provided with several wire holes and several entrance holes；Described wire hole it
Between have grooving, between described entrance hole, have grooving.By driving grooving, eddy current can weaken, terminal board
Temperature relatively low and can keep stable.
Preferably, the entrance hole on described terminal board includes L1 cable entrance hole, L2 cable entrance hole, L3
Cable entrance hole, has grooving between three；In use, L1 cable, L2 cable, L3 cable are respectively
Binding post corresponding with on backboard after above-mentioned entrance hole is connected.
Preferably, the wire hole on described terminal board includes U wire hole, V wire hole, W wire hole, three
Grooving is had between person；In use, U cable, V cable, connect corresponding with on backboard of W cable one end
Line terminals connects, and the other end passes the wire hole of above-mentioned correspondence.
Preferably, the width of described grooving is 8～12mm.
Preferably, between described header board and each wire hole, between header board and each entrance hole, it is provided with edge insulator
Ring.Thus prevent through cable occur bigger rocking.
This utility model compared with prior art, has the advantage that and beneficial effect:
1, this utility model passes through between input entrance hole, drives grooving between outfan wire hole, permissible
Solve converter input cable, output cord passes the problem that terminal board produces eddy current.
2, this utility model simple in construction, it is not necessary to use protective ring i.e. to can reach the effect of equivalent, therefore reduce
Cost.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of existing converter terminal board.
Fig. 2 is the another kind of structural representation of existing converter terminal board.
Fig. 3 is the structural representation of terminal board described in the present embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but this utility model
Embodiment be not limited to this.
Embodiment 1
As it is shown on figure 3, converter terminal board includes terminal board body 2 and binding post described in the present embodiment,
Terminal board body uses irony terminal board, and it is arranged on transducer body 1.Terminal board body is a box
Structure, binding post is arranged on box-structure backboard, in box-structure header board corresponding wiring terminal position
It is provided with several wire holes and several entrance holes.Described wire hole refers to the hole that outfan cable stretches out,
The corresponding binding post of outfan on backboard, described entrance hole refers to the hole that input cable puts in, the back of the body
The binding post that on plate, corresponding input is to be connected.In the present embodiment, between described wire hole, have one
Individual grooving, has a grooving between described entrance hole.
Seeing Fig. 3, as a example by the binding post of main circuit of frequency converter, input entrance hole includes that L1 cable enters
String holes 10, L2 cable entrance hole 11, L3 cable entrance hole 12.In use, L1 cable 3, L2 cable
4, L3 cable 5 is each passed through L1 cable entrance hole 10, L2 cable entrance hole 11, L3 cable entrance hole 12,
Then corresponding with on backboard binding post is connected.Described L1 cable entrance hole, L2 cable entrance hole, L3
The entrance hole of cable entrance hole these three independence is linked into an integrated entity by the first grooving 9.
Outfan wire hole includes U wire hole 13, V wire hole 14, W wire hole 15, in use, U
Cable 6, V cable 7, W cable 8 are each passed through U wire hole 13, V wire hole 14, W wire hole 15
It is connected with outside threephase asynchronous.U cable 6, V cable 7, W cable 8 the other end all and backboard
The binding post of upper correspondence connects.Described U wire hole, V wire hole, the going out of W wire hole these three independence
String holes is linked into an integrated entity by the second grooving 16.
In the present embodiment, in order to easy to process, the width arranging first grooving the 9, second grooving 16 is 8mm.
Meanwhile, in order to prevent through cable occur bigger rocking, between described header board and each wire hole,
Insulation snap ring can be set between header board and each entrance hole.
During converter work, input L1 cable, L2 cable, L3 cable produce alternating current, work as L1
Cable, L2 cable, L3 cable can produce alternating magnetic field when being each passed through on irony terminal board different terminal hole；
Now L1 cable (or L2 cable or L3 cable) can be become the circuit of a Guan Bi with irony terminal board equivalence, close
The magnetic flux closing circuit constantly changes, generation sensing around L1 cable (or L2 cable or L3 cable)
Electromotive force and faradic current, now can form eddy current.Eddy current within terminal board can produce the highest heat,
Cause terminal board heating thus temperature rising.Because the vector of three-phase circuit input alternating current circuit is 0, warp
Cross experimental verification: when by L1 cable, L2 cable, L3 cable also cross one entrance hole of irony terminal board
Time, alternating current now is the faintest, and the alternating magnetic field of generation is the faintest, and eddy current weakens therewith, irony
Terminal board temperature reduces and keeps stable.
In like manner, during converter work, input U cable, V cable, W cable produce alternating current, when
U cable, V cable, W cable produce alternating magnetic field when being each passed through on irony terminal board different terminal hole；
Now U cable (or V cable or W cable) can be become the circuit of a Guan Bi with irony terminal board equivalence, Guan Bi
The magnetic flux of circuit constantly changes, generation induction electric around U cable (or V cable or W cable)
Gesture and faradic current, now can form eddy current.Eddy current within terminal board can produce the highest heat, causes
Terminal board generates heat thus temperature rises.Because the vector of three-phase circuit input alternating current circuit is 0, Jing Guoshi
Checking: when we by U cable, V cable, W cable also cross one wire hole of irony terminal board time,
Alternating current now is the faintest, and the alternating magnetic field of generation is the faintest, and eddy current weakens therewith, irony terminal
Plate temperature reduces and keeps stable.
Under identical experiment condition, when normally working, the terminal board temperature of non-grooving is typically at 55 degrees Celsius
Left and right, and the terminal board temperature described in the present embodiment can drop to 18 degrees Celsius.Therefore, the present embodiment can be drawn
The terminal board temperature caused because of eddy current can be prevented effectively from and raise problem.
Above-described embodiment is this utility model preferably embodiment, but embodiment of the present utility model is not
Being restricted to the described embodiments, any of other is made without departing from spirit of the present utility model and principle are lower
Change, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, be included in this practicality
Within novel protection domain.
Claims (5)
1. the converter terminal board that can reduce eddy current reduction temperature, it is characterised in that include that terminal board is originally
Body, binding post, described terminal board body is a box-structure, and box-structure backboard one side is arranged on frequency conversion
On device body, another side is provided with binding post；It is provided with in box-structure header board corresponding wiring terminal position
Several wire holes and several entrance holes；Between described wire hole, have grooving, described entrance hole it
Between have grooving.
Converter terminal board the most according to claim 1, it is characterised in that entering on described terminal board
String holes includes L1 cable entrance hole, L2 cable entrance hole, L3 cable entrance hole, has grooving between three；
In use, L1 cable, L2 cable, L3 cable are corresponding with on backboard after being each passed through above-mentioned entrance hole
Binding post is connected.
Converter terminal board the most according to claim 1, it is characterised in that going out on described terminal board
String holes includes U wire hole, V wire hole, W wire hole, has grooving between three；In use, U
Cable, V cable, W cable one end binding post corresponding with on backboard connects, and the other end passes above-mentioned right
The wire hole answered.
4. according to the converter terminal board described in any one of claim 1-3, it is characterised in that described grooving
Width be 8～12mm.
5. according to the converter terminal board described in any one of claim 1-3, it is characterised in that described header board
And between each wire hole, be provided with insulation snap ring between header board and each entrance hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261743.9U CN205647237U (en) | 2016-03-31 | 2016-03-31 | Can reduce vortex lowering the temperature's converter terminal block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620261743.9U CN205647237U (en) | 2016-03-31 | 2016-03-31 | Can reduce vortex lowering the temperature's converter terminal block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647237U true CN205647237U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620261743.9U Active CN205647237U (en) | 2016-03-31 | 2016-03-31 | Can reduce vortex lowering the temperature's converter terminal block |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634249A (en) * | 2016-03-31 | 2016-06-01 | 广州七喜智能设备有限公司 | Transducer terminal board capable of decreasing eddy current reduced temperature |
-
2016
- 2016-03-31 CN CN201620261743.9U patent/CN205647237U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634249A (en) * | 2016-03-31 | 2016-06-01 | 广州七喜智能设备有限公司 | Transducer terminal board capable of decreasing eddy current reduced temperature |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |