CN208655407U - Three-phase cable fuse voltage transformer - Google Patents
Three-phase cable fuse voltage transformer Download PDFInfo
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- CN208655407U CN208655407U CN201821220010.6U CN201821220010U CN208655407U CN 208655407 U CN208655407 U CN 208655407U CN 201821220010 U CN201821220010 U CN 201821220010U CN 208655407 U CN208655407 U CN 208655407U
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- fingertip
- insulator
- voltage transformer
- fuse
- lock housing
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Abstract
The utility model relates to electric system high-tension measurement or relay protection device, in particular to a kind of three-phase cable fuse voltage transformer.Including insulator and it is sealed and placed in the intracorporal iron core of insulation, first winding and secondary winding, wherein first winding and secondary winding are wrapped on iron core with one heart, the top of insulator is equipped with three phase isolated cylinder, a fuse connecting respectively with three primary connection terminals is equipped in three phase isolated cylinder, the front end of each insulating cylinder is equipped with trigger installation.The utility model have the advantages that it is small in size, structurally reasonable, flexible for installation, easy to maintain, insulation it is reliable, be widely portable to Novel switch cabinet match and old-fashioned switch cabinet handcart use.
Description
Technical field
The utility model relates to electric system high-tension measurement or relay protection device, in particular to a kind of three-phase cable fuse
Voltage transformer.
Background technique
Voltage transformer is the equipment that voltage, electric energy are measured in electric system or electric control system, in order to realize switch
Cabinet miniaturization and repair and maintenance are convenient, generally use the design form of voltage mutual inducer trolley, existing voltage mutual inducer trolley
Form are as follows: mainly it is made of chassis vehicle, single-phase potential transformer, insulation column, external fuse, contact arm, Mume flower contact etc.,
That there are components is more, installation is complicated, maintenance is cumbersome, qualifying point is more, it is at high cost, insulate the problems such as unreliable.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of three-phase cable fuse voltage transformer, with suitable
Novel switch cabinet is answered to need, change voltage mutual inducer trolley component is more, installation is complicated, maintenance is cumbersome, qualifying point is more, cost
High problem.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of three-phase cable fuse voltage transformer, including insulator and it is sealed and placed in the intracorporal iron core of the insulation, primary
Winding and secondary winding, wherein first winding and secondary winding are wrapped on iron core with one heart, and the top of the insulator is equipped with three
Phase insulating cylinder is equipped with a fuse connecting respectively with three primary connection terminals in three phase isolated cylinder, each insulating cylinder
Front end is equipped with trigger installation.
The inside bottom of the insulating cylinder is equipped with the fuse top plate connecting with the primary connection terminal, described primary molten
Disconnected device is abutted with the fuse top plate.
The rear end edge of the insulating cylinder is axially arranged with the striker hole being connected to the inner cavity of the insulating cylinder.
Three phase isolated cylinder is parallel to each other and spaced set.
The insulating cylinder front end is cylindrical shape, and rear end is that semicolumn is mutually passed through with insulator, and rear end end is chamfered transition
Structure.
The rear end lower of the insulator is equipped with secondary connection seat.
The front lower portion of the insulator is equipped with ground terminal.
The insulator is bilateral symmetry, and two upper lateral parts are inwardly punctured into outer inclined-plane, the insulator two sides
Lower part is equipped with groove.
The trigger installation includes fingertip tapered end, fingertip locking bolt, fingertip lock housing and spring, and wherein fingertip locking bolt is placed in touching
Refer to inside one end of lock housing and is connect with the inner thread of fingertip lock housing, one end of the fingertip tapered end and the fingertip lock housing
Inner wall be slidably connected, the other end in the fingertip lock housing by being pierced by, and the spring retention is in the fingertip lock housing and both ends
It is abutted respectively with the fingertip locking bolt and fingertip tapered end, the swivel nut nut spiral shell that the fingertip lock housing is embedded with the insulating cylinder end
Line connection.
The insulator is an integral structure using poured with epoxy resin, and the bottom of the insulator is equipped with mounting base.
The utility model have the following advantages that and the utility model has the advantages that
1. the utility model is small in size, structurally reasonable: optimizing structure design, trigger installation are integrated with fuse insulating cylinder
Formula structure, product structure are more compact small in size；The various functions such as the protection of product collection fuse, contact arm, contact finger conducting device are
One, is more applicable for matching for novel voltage mutual inductor handcart；
2. the utility model has the advantages of convenient installation, easy to maintain: when product is installed and used, only need to be mounted on mutual inductor according to phase sequence
In handcart, it is not required to especially install other numerous electric fittings additional, effectively saves the assembly time of handcart；When product overhauls
It is simpler, do not need special maintenance work；
3. the utility model insulation is stablized, safe operation: it is formed using epoxide resin material is integrated poured, insulation is reliable,
Electric connecting part on the high side is saved, many hidden danger of quality are effectively prevented from design, guarantees that handcart operation is safer.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the utility model；
Fig. 2 is the utility model external structure main view；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is the left view of Fig. 2.
In figure: 1 is iron core；2 be first winding；3 be secondary winding；4 be a fuse；5 be insulating cylinder；6 be secondary
Junction block；7 be mounting base；8 be trigger installation；9 be swivel nut nut；10 be inclined-plane；11 be striker hole；12 be insulator；13
For ground terminal；14 be fuse top plate；15 be groove；16 be fingertip tapered end；17 be spring；18 be fingertip lock housing；19 be touching
Refer to locking bolt.
Specific embodiment
In order to keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing and it is embodied
The utility model is described in detail in example.
As shown in Figs 1-4, a kind of three-phase cable fuse voltage transformer provided by the utility model, including insulator 12 and
Iron core 1, first winding 2 and the secondary winding 3 being sealed and placed in insulator 12, wherein first winding 2 and secondary winding 3 are wound with one heart
On iron core 1, the top of insulator 12 is equipped with three phase isolated cylinder 5, be equipped in three phase isolated cylinder 5 respectively with three primary connections
The front end of fuse 4 of terminal connection, each insulating cylinder 5 is equipped with trigger installation 8.
Insulator 12 is an integral structure using poured with epoxy resin, and the bottom of insulator 12 is equipped with mounting base 7.Insulation
Body 12 is bilateral symmetry, and two upper lateral parts are inwardly punctured into outer inclined-plane 10, and the lower part of 12 two sides of insulator is equipped with groove 15,
Guarantee that insulation distance is uniform and easy to carry.The rear end lower middle position of insulator 12 is equipped with secondary connection seat 6, is easy to use
When handcart secondary connection arrangement and the fixed of secondary lead wires cable draw.The front lower portion of insulator 12 is equipped with ground connection
Terminal 13 facilitates ground connection, as shown in Figure 2.
The inside bottom of insulating cylinder 5 is equipped with the fuse top plate 14 that connect with primary connection terminal, a fuse 4 with melt
Disconnected device top plate 14 abuts.
As shown in Figure 3-4, three phase isolated cylinder 5 is parallel to each other and spaced set, 5 front end of insulating cylinder are cylindrical shape, after
End is that semicolumn is passed through with 12 phase of insulator, and rear end end is chamfered transition structure, further increases alternate electric insulation distance
And insulation distance relatively, it is horizontal to improve insulating products.The rear end edge of insulating cylinder 5 is axially arranged with and the inner cavity of insulating cylinder 5 connects
Logical striker hole 11.The installation insulation that three phase isolated cylinder 5 serves not only as fuse is used, and guarantees there is uniform electric field around it, and
And be the primary insulation transition piece an of trigger installation 8, there is enough mechanical strengths.
As shown in Figure 1, trigger installation 8 includes fingertip tapered end 16, fingertip locking bolt 19, fingertip lock housing 18 and spring 17, wherein
Fingertip locking bolt 19 is placed in inside one end of fingertip lock housing 18 and connect with the inner thread of fingertip lock housing 18, fingertip tapered end 16
One end and the inner wall of fingertip lock housing 18 be slidably connected, for the other end by being pierced by fingertip lock housing 18, spring 17 is placed in fingertip lock
In shell 18 and both ends are abutted with fingertip locking bolt 19 and fingertip tapered end 16 respectively, the spiral shell that fingertip lock housing 18 is embedded with 5 end of insulating cylinder
It covers nut 9 to be threadedly coupled, fingertip tapered end 16 is metalwork.
The manufacturing process of the utility model is:
Secondary winding 3 and first winding 2 are concentric rotating around on the stem of two iron cores 1 using dedicated spooling equipment, and one
The end of secondary winding 2 is connect with fuse top plate 14 respectively, is respectively formed A, C phase coil device after insulating and buffering wrapping
Coil body is fixed in casting mold after vacuum drying using embedded nut and core clamping etc., is reconnected by body
The fuse top plate 14 and mold core model of first winding, then secondary connection is connected, insulation distance is adjusted, using epoxide resin vacuum
Casting solidifies, and is finally mounted as a whole on a mounting base 7；Become therewith: 12 bilateral symmetry of insulator, envelope is set primary
The three phase isolated cylinder 5 of fuse 4 is the identical cylindrical shape of shape of horizontal disposed at equal distance, serves not only as the installation of fuse
Insulation is used, and guarantees there is uniform electric field around it, and be the primary insulation transition piece an of trigger installation, has enough machines
Tool intensity；Three primary connection terminals are 8 form of trigger installation with compression function, by metalwork fingertip tapered end 16, fingertip
Locking bolt 19, fingertip lock housing 18 and spring 17 form, fingertip locking bolt 19 and fingertip lock housing 18 and fingertip lock housing 18 and swivel nut nut 9
It is a kind of have any different in the primary conductive connection type of Mume flower contact, realization and switchgear high-voltage busbar using threaded connection
Flexibly electrical contact；The trigger installation 8 of primary connection terminal is fixed on the front end of insulating cylinder 5 using swivel nut nut 9, guarantees and primary
The effective electrical contact of high-tension fuse, and guarantee whole with enough mechanical strengths；Three phase isolated cylinder 5 is equidistant laterally
Arrangement, and front end is cylindrical shape, is backward that semicolumn is passed through with 12 phase of insulator, the interim form on rear end inclined-plane further mentions
High alternate electric insulation distance and insulation distance relatively, it is horizontal to improve insulating products；Three phase isolated cylinder 5 from right to left according to
Secondary is A phase, B phase and C phase, and the phase sequence of handcart convenient to use arranges that each 5 rear end chamfered transition of insulating cylinder is simultaneously provided with striker
Hole 11, when fuse blows its included ram can automatic spring, facilitate the identification readily replaceable fuse of failure phase sequence；Insulator
12 bilateral symmetries, two sides, by having groove 15, guarantee that insulation distance is uniform and easy to carry to 10 transition of outer inclined-plane；It is secondary to connect
Line seat 6 is located behind the secondary connection arrangement for the handcart that lower part is placed in the middle, when convenient to use and the fixation of secondary lead wires cable is drawn
Out；12 lower part mounting base 7 of insulator, front side are provided with ground terminal 13, facilitate ground connection.
Product with ram fuse in use, will first be packed into fuse insulating cylinder, then by the touching rouge assembled dress
The front end for being fixed on insulating cylinder using bolt thread is set, chassis is mounted on according to metering handcart design using the mounting plate of mutual inductor
Che Shang, a trigger installation are in close contact according to phase sequence, finally carry out secondary line cable connection, and install secondary anti-fraudulent use of electricity protection additional
Cover, metering handcart assembly work are completed.
Three-phase cable fuse voltage transformer provided by the utility model is fully according to national standard and voltage transformer
Handcart switch cabinet technical requirements and a kind of new product designed, using electromagnetic conversion principle, makes secondary voltage using iron core is rolled
The situation of change that can accurately reflect primary voltage, uses as voltage measurement and relay protection.
The utility model is poured using epoxide resin vacuum, has small in size, structurally reasonable, flexible for installation, Yi Wei
Protect, insulate reliable advantage, be widely portable to Novel switch cabinet match and old-fashioned switch cabinet handcart use.
The foregoing is merely the embodiments of the present invention, are not intended to limit the protection scope of the utility model.It is all
Any modification, equivalent substitution and improvement made within spirit of the present utility model and principle, extension etc., are all contained in this reality
With in novel protection scope.
Claims (7)
1. a kind of three-phase cable fuse voltage transformer, which is characterized in that including insulator (12) and be sealed and placed in the insulator
(12) iron core (1), first winding (2) and secondary winding (3) in, wherein first winding (2) and secondary winding (3) are wound with one heart
On iron core (1), the top of the insulator (12) is equipped with three phase isolated cylinder (5), be equipped in three phase isolated cylinder (5) respectively with
The front end of fuse (4) of three primary connection terminals connection, each insulating cylinder (5) is equipped with trigger installation (8)；
The inside bottom of the insulating cylinder (5) is equipped with the fuse top plate (14) that connect with the primary connection terminal, and described one
Secondary fuse (4) abuts with the fuse top plate (14)；
The rear end edge of the insulating cylinder (5) is axially arranged with the striker hole (11) being connected to the inner cavity of the insulating cylinder (5)；
The trigger installation (8) includes fingertip tapered end (16), fingertip locking bolt (19), fingertip lock housing (18) and spring (17), wherein
Fingertip locking bolt (19) is placed in inside one end of fingertip lock housing (18) and connect with the inner thread of fingertip lock housing (18), described
One end of fingertip tapered end (16) and the inner wall of the fingertip lock housing (18) are slidably connected, and the other end is by the fingertip lock housing (18)
Be pierced by, the spring (17) be placed in the fingertip lock housing (18) and both ends respectively with the fingertip locking bolt (19) and fingertip
Tapered end (16) abuts, and the fingertip lock housing (18) is threadedly coupled with the swivel nut nut (9) that the insulating cylinder (5) end is embedded.
2. three-phase cable fuse voltage transformer according to claim 1, which is characterized in that three phase isolated cylinder (5) is mutual
In parallel and spaced set.
3. three-phase cable fuse voltage transformer according to claim 1, which is characterized in that insulating cylinder (5) front end
For cylindrical shape, rear end is that semicolumn is mutually passed through with insulator (12), and rear end end is chamfered transition structure.
4. three-phase cable fuse voltage transformer according to claim 1, which is characterized in that after the insulator (12)
Lower part is held to be equipped with secondary connection seat (6).
5. three-phase cable fuse voltage transformer according to claim 4, which is characterized in that before the insulator (12)
Lower part is held to be equipped with ground terminal (13).
6. three-phase cable fuse voltage transformer according to claim 1, which is characterized in that the insulator (12) is a left side
Right symmetrical structure, and two upper lateral parts are inwardly punctured into outer inclined-plane (10), the lower part of insulator (12) two sides is equipped with groove
(15)。
7. three-phase cable fuse voltage transformer according to claim 1-6, which is characterized in that the insulator
(12) it is an integral structure using poured with epoxy resin, the bottom of the insulator (12) is equipped with mounting base (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821220010.6U CN208655407U (en) | 2018-07-31 | 2018-07-31 | Three-phase cable fuse voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821220010.6U CN208655407U (en) | 2018-07-31 | 2018-07-31 | Three-phase cable fuse voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208655407U true CN208655407U (en) | 2019-03-26 |
Family
ID=65787077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821220010.6U Active CN208655407U (en) | 2018-07-31 | 2018-07-31 | Three-phase cable fuse voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208655407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115910559A (en) * | 2023-03-10 | 2023-04-04 | 国网福建省电力有限公司 | Standard voltage transformer, manufacturing method and combined standard voltage transformer |
-
2018
- 2018-07-31 CN CN201821220010.6U patent/CN208655407U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115910559A (en) * | 2023-03-10 | 2023-04-04 | 国网福建省电力有限公司 | Standard voltage transformer, manufacturing method and combined standard voltage transformer |
| CN115910559B (en) * | 2023-03-10 | 2023-09-22 | 国网福建省电力有限公司 | Standard voltage transformer, manufacturing method and combined standard voltage transformer |
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