CN206471221U - A kind of band elbow plug voltage transformer - Google Patents
A kind of band elbow plug voltage transformer Download PDFInfo
- Publication number
- CN206471221U CN206471221U CN201720103781.6U CN201720103781U CN206471221U CN 206471221 U CN206471221 U CN 206471221U CN 201720103781 U CN201720103781 U CN 201720103781U CN 206471221 U CN206471221 U CN 206471221U
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- Prior art keywords
- elbow
- fuse
- extraction head
- fusing
- cavity
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Abstract
This practicality provides a kind of band elbow plug voltage transformer, independent fusing seat is integrally formed with above cable socket, the seat that fuses is interior provided with the fusing cavity for accommodating above-mentioned fuse, the openend of fusing cavity is located at the same side with cable socket, the end of fusing cavity is provided with embedded component, the openend of fusing cavity is provided with dismountable fixed plate, fuse is arranged between embedded component and fixed plate, one end of fuse is withstood on spring, fuse is electrically connected with embedded component with fixed plate, a terminal is embedded with cable socket, elbow-type cable insertion and extraction head is provided with primary conductive bar, when elbow-type cable insertion and extraction head inserts cable socket, primary conductive bar is electrically connected by stage clip with a terminal, one time terminal is connected by the fuse for the cavity that fuses with primary winding.The utility model is when changing fuse, it is to avoid the complicated technique of dismounting insertion and extraction head, easy to operate, improves operating efficiency, has saved substantial amounts of replacing construction, had highly application value.
Description
Technical field
This practicality belongs to transformer technical field, and in particular to a kind of voltage transformer.
Background technology
Existing band elbow plug voltage transformer carries high-tension fuse in itself because of transformer, and elbow plug adds high pressure
Cable well can be insulated voltage high-pressure side.Elbow-type cable insertion and extraction head is installed on insulation crust, tradition is changed
Outlet of voltage, and insulation crust is built-in with changeable type fuse, without additionally mounted, reduces voltage transformer
Space floor space, therefore, the product has been used widely.In the long-play of voltage transformer, due to electricity
The fluctuation of net or operation exception, it may appear that voltage transformer fuse blows phenomenon is, it is necessary to which attendant changes fuse immediately.
The reasons such as the miniaturization due to current electric switch, often occur the problems such as replacing fuse is bothered.
Such as the most common structure with elbow plug voltage transformer, Chinese utility model patent ZL200920061401.2
A kind of disclosed band elbow head voltage transformer, and three-phase elbow socket type voltage transformer disclosed in ZL201020690010.X,
Its structure is as shown in figure 1, the band elbow-type insertion and extraction head voltage transformer used in high-tension switch cabinet, unipolar type configures two plugs
Head, three match three.Its structure includes poured with epoxy resin main body 15, elbow-type cable insertion and extraction head 21, special fusion tube 18 and epoxy
Bottom plate 13, oxygen are installed under the integral first winding 3 of resin-cast, secondary winding 2, iron core 1, poured with epoxy resin main body 15
The bottom of resin-cast main body 15 is provided with secondary terminals 12, and secondary terminals 12 are connected with secondary winding 2, elbow-type cable insertion and extraction head 21
Bottom is connected with high-tension cable 23, and the insertion switch cabinet bottom of high-tension cable 23, elbow-type cable insertion and extraction head 21 is inserted on cable socket.
The structure provides built-in fusion tube storehouse for the primary connection end of transformer, and high-tension cable is molten by the direct fastening high of elbow-type insertion and extraction head
Pipe, is inserted and fixed in transformer primary connection end.Special fusion tube 18 is installed in its structural insulation shell, special fusion tube 18 with
Coil is electrically connected, and elbow-type cable insertion and extraction head is provided with insulation crust, elbow-type cable insertion and extraction head is electrically connected with special fusion tube 18.
Because transformer voltage is, more than 10kV, to require prescribed limits to pressure-resistant and partial discharge test standard, cable insertion and extraction head is in itself
Compact conformation, creep age distance is smaller, and it is very high to assemble technological requirement, be surface-treated during operation it is extremely important, it is molten to transformer
Pipe storehouse outer wall and elbow-type insertion and extraction head inwall are wiped over using Special cleaning cloth, then are uniformly smeared with vaseline, finally by plug first melt
Pipe insertion transformer locking.Whole installation process must be controlled strictly, have strict requirements (general to ambient humidity and tidiness
Can not be in raining working).In transformer operationally, outside or inside factor can cause overcurrent, once protect special when inducing
Fused with fusion tube 18, it is necessary to which fusion tube is changed.There are the following problems for the structure：One is typically mounted on out due to product
Bottom of cabinet portion is closed, high-tension cable is connected to switch cubicle by cable duct inlet wire, and the bending radius of cable is minimum, adds high pressure fusion tube in itself
There is longer length, so when taking elbow cable insertion and extraction head apart, the special fusion tube of high pressure must be pulled out together with insertion and extraction head, so insert
Dial extremely difficult, easily cause transformer fusion tube mouthful epoxy resin damaged, seriously then cause product rejection.Secondly changing work
Sequence is complicated, and technological requirement is high.During replacing, it is necessary to first pull down high-tension cable insertion and extraction head, special fusion tube is unscrewed once, is more renewed
After special fusion tube, the greasy dirt of remained on surface is removed, particularly in strict accordance with the requirement of insertion and extraction head packaging technology, plug is loaded onto in progress
Head, while whole disassembly process is both it is noted that clean environment, drying, careful careful again, it is impossible to which, by filth, this causes power supply
Repairing wastes many times.
The Chinese invention patent for the Patent No. ZL201210236160.7 that the applicant authorizes, discloses a kind of band elbow
Plug voltage transformer, including elbow-type end, the integral first winding of fuse and poured with epoxy resin, secondary winding,
Fused seat, cable socket, and the anterior connection cable socket for the seat that fuses, elbow-type end is inserted on cable socket, accommodates fuse
Fusing seat cavity before and after insertion, be provided with the middle part of fusing seat cavity on the pole plate of embedded component, pole plate and be provided with bar hole, embedded component and one
Secondary winding is connected；One end of fuse is provided with fixed plate, and its end face is provided with screw；Fixed plate appearance and size is less than the bar of pole plate
Hole；Fuse is located between pole plate and elbow-type end, and the fixed plate of fuse is withstood on pole plate.The invention can be used in electricity
Pressure transformer rear and front end, which is realized, is changed and is installed fuse, to facilitate the use on different switch cabinet bodies.But
During actual popularization, because cable socket and elbow-type cable insertion and extraction head are usually located at the cabinet door end of switch cubicle, corresponding rear end is
The backboard of switch cubicle, is closed state, although the rear end with elbow plug voltage transformer is provided with achievable changed
Technical scheme with fuse is installed, performs practically no function in application scenario, when changing and installing fuse, it is desired nonetheless to use and unload
Lower elbow-type end changes fuse, therefore the art solutions can not be widely applied.
The content of the invention
There is provided band elbow plug voltage transformer the present invention seeks to one kind, using independent fusion tube chamber structure, fusion tube storehouse with
Elbow insertion and extraction head is separated, when changing and installing fuse, it is not necessary to change fuse using elbow-type end is unloaded, and grasp
Make easy, saved substantial amounts of replacing construction.
Present invention solves the technical problem that the technical scheme used is：
A kind of band elbow plug voltage transformer, including poured with epoxy resin main body, elbow-type cable insertion and extraction head, fuse and
The integral first winding of poured with epoxy resin, secondary winding, cable socket, elbow-type cable insertion and extraction head are inserted on cable socket,
It is characterized in that being integrally formed with above cable socket in independent fusing seat, fusing seat provided with the fusing for accommodating above-mentioned fuse
Cavity, openend and the cable socket of the cavity that fuses are located at the same side, and the end of fusing cavity is provided with embedded component, fusing cavity
Openend is provided with dismountable fixed plate, and fuse is arranged between embedded component and fixed plate, and one end of fuse withstands on spring
On, fuse is electrically connected with embedded component with fixed plate, and a terminal is embedded with cable socket, and elbow-type cable insertion and extraction head is provided with one
Secondary conducting rod, when elbow-type cable insertion and extraction head inserts cable socket, primary conductive bar is electrically connected by stage clip with a terminal, and one
Secondary terminal is connected by the fuse for the cavity that fuses with primary winding, and the openend of fusing cavity is arranged with sealing cap.
The present invention is integrally formed with independent fusing seat, the openend for the cavity that fuses and cable socket above cable socket
Positioned at the same side, fuse is located between embedded component and fixed plate, and fuse is arranged between embedded component and fixed plate, is once held
Son is connected by the fuse for the cavity that fuses with primary winding.The utility model transformer design once protection fusing of the present invention
In the separate structure of device and cable insertion and extraction head independence, the switch cubicle applied to high-tension cable pulling and inserting type, install and safeguard separately, elbow
Type cable insertion and extraction head insert cable socket, during installation once after the completion of, without repeat plug operation；If running burns
When fusion tube needs to change, it need to only change and complete in fusion tube storehouse, it is to avoid complex process and strict operation.Sealing cap is opened, lower cover is unloaded,
Fusion tube is automatically popped up replacing, after the completion of screw on cover plate, cover sealing cap.Present invention fusing seat is located above cable socket,
Performance is imitated with good insulation, it is effective to ensure product electric property；The openend of fusing cavity is located at same with cable socket
Side, when installing fuse, implementation can just be operated by opening the cabinet door of switch cubicle, and practicality is high, it is to avoid install or changing molten
Exist during disconnected device and change the troublesome problems such as insufficient space, significantly facilitate the use on different switch cabinet bodies, it is flexible for installation, favorably
In the Miniaturization Design of switch cubicle, and it is easy to operate, save substantial amounts of replacing construction.
The utility model uses independent fusion tube chamber structure, is separated with elbow insertion and extraction head, simple in construction, reasonable in design, installation
It is easy to maintenance, it is effective to ensure product electric property, it is to avoid product can be changed when protecting scorification pipe to fusion tube storehouse simplicity,
It will not need to remove cable insertion and extraction head because changing fusion tube, exempt the complicated technique of dismounting insertion and extraction head, work is greatly improved
Make efficiency；A high-tension cable insertion and extraction head junction is without fusion tube storehouse in the utility model, and one time terminal is poured with epoxy resin completely
Note filling, so mechanical strength is big, will not be because elbow insertion and extraction head is dismounted and damages, also will not be difficult because changing fusion tube, collide with brokenly
Fusion tube storehouse is damaged, causes to scrap.
When it is implemented, a terminal is connected by wire with fixed plate, embedded component passes through wire and first winding phase
Connection；The inwall of the openend of fusing cavity is provided with step, step surface and is embedded with fixing nut, passes through provided with fixing screws solid
Fixed board precession fixing nut, fixed plate is fixed on step surface, and fixing nut is connected by wire with a terminal.
When it is implemented, the poured with epoxy resin main body between cable socket and fusing seat is provided with full skirt.
When it is implemented, the profile of cable socket is tapered, the connection cavity of elbow-type cable insertion and extraction head and cable socket
Profile is adapted, and when elbow-type cable insertion and extraction head inserts cable socket, elbow-type cable insertion and extraction head is combined closely with cable socket.Mutually
The primary voltage terminal outer of sensor is consistent with elbow-type insertion and extraction head taper, and dimensional fits are appropriate.High-tension cable is worn during installation
Cross elbow insertion and extraction head and fastened primary conductive bar, terminal of transformer is compressed by stage clip, be fitted close, elbow insertion and extraction head can
Tensed with hasp.
The beneficial effects of the invention are as follows：The present invention is integrally formed with independent fusing seat above cable socket, and fuse chamber
The openend of body is located at the same side with cable socket, and good electric property is simple in construction, reasonable in design, convenient for installation and maintenance, more
It is easy to operate when changing fuse, it is to avoid the complicated technique of dismounting insertion and extraction head, operating efficiency is improved, substantial amounts of replacing has been saved
Time, it has highly application value.
Brief description of the drawings
Invention is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the prior art with elbow plug voltage transformer.
Fig. 2 is the structural representation of the invention with the embodiment of elbow plug voltage transformer one.
Fig. 3 is the contour structures schematic diagram of the invention with the embodiment of elbow plug voltage transformer one.
Fig. 4 is the contour structures schematic diagram of the invention with another embodiment of elbow plug voltage transformer.
Embodiment
It refer to shown in Fig. 2 and Fig. 3, a kind of band elbow plug voltage transformer, is single-phase transformers structure, first winding
3 A, B two ends are connected with high-tension line, pass through the electromagnetic induction of annular core 1, the direct voltage output of secondary winding 2, for secondary
System is measured and control is used.Its structure includes poured with epoxy resin main body 15, elbow-type cable insertion and extraction head 21, the and of fuse 7
Under the integral first winding 3 of poured with epoxy resin, secondary winding 2, iron core 1, cable socket 4, poured with epoxy resin main body 15
Bottom plate 13 is installed, the bottom of oxygen resin-cast main body 15 is provided with secondary terminals 12, and secondary terminals 12 are connected with secondary winding 2,
The bottom of elbow-type cable insertion and extraction head 21 is connected with high-tension cable 23, the insertion switch cabinet bottom of high-tension cable 23, elbow-type cable insertion and extraction head
21 are inserted on cable socket 4, are integrally formed with above cable socket 4 in independent fusing seat 14, fusing seat 14 provided with receiving
The fusing cavity of above-mentioned fuse 7, fusing cavity is also known as fusion tube storehouse, and the openend for the cavity that fuses and cable socket 4 are positioned at same
Side, the end of fusing cavity is provided with embedded component 5, and the openend of fusing cavity is provided with dismountable fixed plate 16, and fuse 7 is set
Between embedded component 4 and fixed plate 16, one end of fuse 7 is withstood on embedded component 5 by spring 6, the other end of fuse 7 with
Fixed plate 16 is electrically connected, and a terminal 10 is embedded with cable socket 4, and elbow-type cable insertion and extraction head 21 is provided with primary conductive bar 22,
When elbow-type cable insertion and extraction head 21 inserts cable socket 4, primary conductive bar 22 is electrically connected by stage clip 11 with a terminal 10, and one
Secondary terminal 10 is connected by wire with fixed plate 16, and embedded component 5 is connected by wire with first winding 3；Fuse cavity
Openend is arranged with sealing cap 9, and sealing cap 9 is silica gel material.
The inwall of the openend of described fusing cavity, which is provided with step, step surface, is embedded with fixing nut 8, provided with fixation
Screw is fixed on fixed plate 16 on step surface, fixing nut 8 passes through wire and one by the precession fixing nut 8 of fixed plate 16
Secondary terminal 10 is connected.By the structure, being detachably connected between the openend of fixed plate 16 and the cavity that fuses is realized.
Poured with epoxy resin main body 15 between described cable socket 4 and fusing seat 14 is provided with full skirt 17.Full skirt 17
Improve the electric property of product.
The profile of described cable socket 4 is tapered, and the connection cavity of elbow-type cable insertion and extraction head 21 is outer with cable socket 4
Shape is adapted, and when elbow-type cable insertion and extraction head 21 inserts cable socket 4, elbow-type cable insertion and extraction head 21 is closely tied with cable socket 4
Close.The outside of primary voltage terminal 10 of transformer is consistent with the taper of elbow-type cable insertion and extraction head 21, and dimensional fits are appropriate.One during installation
Sub-high pressure cable has fastened primary conductive bar 22 through elbow-type cable insertion and extraction head 21, and terminal of transformer is compressed by stage clip,
It is fitted close, elbow-type cable insertion and extraction head 21 can be tensed with hasp.
In another embodiment, it refer to shown in Fig. 4, a kind of band elbow plug voltage transformer, is threephase potential transformer,
Its internal winding is formed by " V " shape or Y-connection, and its A, B, C-terminal and three-phase high-voltage connection are same secondary defeated
Go out that three-phase voltage electrical secondary system is measured and control is used.Its structure includes poured with epoxy resin main body 15, provided with three rows
Cable socket 4, be integrally formed with above cable socket 4 in the fusing seat 14 of three row's independence, fusing seat 14 provided with accommodating
The fusing cavity of above-mentioned fuse, openend and the cable socket 4 of the cavity that fuses are located at the same side, the similar upper implementation of internal structure
The single-phase potential transformer of example.
High-tension cable 23 has been fastenedly connected primary conductive bar 22 by elbow-type cable insertion and extraction head 21, meets technological requirement, directly
Patch into cable socket 4, and compress a terminal of main body 15, the secondary voltage produced after high-tension electricity input passes through secondary terminals
12 outputs.Transformer makes as follows：The coiling secondary coil 2 on iron core 1, lead to secondary terminals 11, to export two
Secondary voltage.First winding 3 is wound up on the iron core 1 with secondary winding 2 with one heart, and lead is distinguished to fusion tube in the two of first winding 3
On the embedded component 5 in storehouse, spring 6 is fixed with dormant bolt and tightened, the other end wire of fuse 7 is by fixing nut 8 and once
Terminal 9 is connected, and stage clip 11 is tightened with dormant bolt, and each part components test epoxy resin one-time cast-forming, and fixed
On base 13.Electrically flow is：High-tension cable 1 is connected to consolidating for fusion tube storehouse by the conducting rod 9 of elbow-type cable insertion and extraction head 21
Nut 8 is determined, fusion tube storehouse port is isolated using sealing cap 9 with exterior insulation, by protecting fuse 7 to flow to embedded component 5, voltage difference
It is applied in transformer first winding 3, being transferred to secondary terminals 12 by secondary winding 2 flows out.
When installing and using, transformer body bottom plate 13 is fixed on pedestal, high-tension cable 23 is according to strict insertion and extraction head
Assembly technology requirement, inserts cable socket 4, primary conductive bar 22 passes through stage clip 11 and a terminal by elbow-type cable insertion and extraction head 21
10 electrically connect, under normal circumstances Maintenance free.Protection fuse 7 is inserted and compressed by fusion tube storehouse, and port uses silica gel sealing cap 9
It is dielectrically separated from.In the process of running, when needing to change if there is scorification pipe, external high pressure electricity need to be only disconnected, silica gel envelope is opened
Cap 9, unclamps fusion tube fixing nut 8, and ejection fuse 7 is directly changed.It is not required to open elbow-type cable insertion and extraction head 21, it is to avoid repeat to grasp
Make strict insertion and extraction head assembly technology.
Finally, in addition it is also necessary to it is noted that listed above is only specific embodiment of the invention.Obviously, the present invention is not limited
In above example, there can also be many deformations.One of ordinary skill in the art can be direct from disclosure of the present invention
All deformations for exporting or associating, are considered as protection scope of the present invention.
Claims (4)
1. a kind of band elbow plug voltage transformer, including poured with epoxy resin main body, elbow-type cable insertion and extraction head, fuse and ring
The integral first winding of oxygen resin-cast, secondary winding, cable socket, elbow-type cable insertion and extraction head are inserted on cable socket, its
It is characterized in be integrally formed with above cable socket in independent fusing seat, fusing seat provided with the fusing chamber for accommodating above-mentioned fuse
Body, openend and the cable socket of the cavity that fuses are located at the same side, the end of fusing cavity is provided with embedded component, and fusing cavity is opened
Mouth end is provided with dismountable fixed plate, and fuse is arranged between embedded component and fixed plate, and one end of fuse is withstood on spring,
Fuse is electrically connected with embedded component with fixed plate, a terminal is embedded with cable socket, elbow-type cable insertion and extraction head is provided with once
Conducting rod, when elbow-type cable insertion and extraction head inserts cable socket, primary conductive bar is electrically connected by stage clip with a terminal, once
Terminal is connected by the fuse for the cavity that fuses with primary winding, and the openend of fusing cavity is arranged with sealing cap.
2. a kind of band elbow plug voltage transformer according to claim 1, it is characterized in that a terminal by wire with
Fixed plate is connected, and embedded component is connected by wire with first winding；The inwall of the openend of fusing cavity is provided with step, platform
Fixing nut is embedded with terrace, provided with fixing screws by fixed plate precession fixing nut, fixed plate is fixed on step surface
On, fixing nut is connected by wire with a terminal.
3. a kind of band elbow plug voltage transformer according to claim 1 or 2, it is characterized in that cable socket and fusing seat
Between poured with epoxy resin main body be provided with full skirt.
4. a kind of band elbow plug voltage transformer according to claim 1 or 2, it is characterized in that the profile of cable socket is in
Taper, the connection cavity of elbow-type cable insertion and extraction head is adapted with the profile of cable socket, when elbow-type cable insertion and extraction head inserts cable
During socket, elbow-type cable insertion and extraction head is combined closely with cable socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103781.6U CN206471221U (en) | 2017-01-23 | 2017-01-23 | A kind of band elbow plug voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720103781.6U CN206471221U (en) | 2017-01-23 | 2017-01-23 | A kind of band elbow plug voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471221U true CN206471221U (en) | 2017-09-05 |
Family
ID=59704691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720103781.6U Withdrawn - After Issue CN206471221U (en) | 2017-01-23 | 2017-01-23 | A kind of band elbow plug voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206471221U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683862A (en) * | 2017-01-23 | 2017-05-17 | 浙江天际互感器有限公司 | Voltage transformer with elbow plug |
| CN109755080A (en) * | 2019-03-01 | 2019-05-14 | 大连北方互感器集团有限公司 | A kind of voltage transformer secondary fuse protective device and preparation method thereof |
| CN110600251A (en) * | 2019-09-27 | 2019-12-20 | 国网浙江省电力有限公司舟山供电公司 | Combined voltage transformer with zero sequence voltage output function |
-
2017
- 2017-01-23 CN CN201720103781.6U patent/CN206471221U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683862A (en) * | 2017-01-23 | 2017-05-17 | 浙江天际互感器有限公司 | Voltage transformer with elbow plug |
| CN109755080A (en) * | 2019-03-01 | 2019-05-14 | 大连北方互感器集团有限公司 | A kind of voltage transformer secondary fuse protective device and preparation method thereof |
| CN110600251A (en) * | 2019-09-27 | 2019-12-20 | 国网浙江省电力有限公司舟山供电公司 | Combined voltage transformer with zero sequence voltage output function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170905 Effective date of abandoning: 20180417 |