CN218214973U - Metal armored voltage transformer's inner structure - Google Patents
Metal armored voltage transformer's inner structure Download PDFInfo
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- CN218214973U CN218214973U CN202222187010.3U CN202222187010U CN218214973U CN 218214973 U CN218214973 U CN 218214973U CN 202222187010 U CN202222187010 U CN 202222187010U CN 218214973 U CN218214973 U CN 218214973U
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- fuse
- metal
- fuse tube
- hand member
- voltage transformer
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Abstract
The utility model discloses a metal armor formula voltage transformer's inner structure belongs to voltage transformer technical field. Including the fuse-link, the fuse-link right-hand member is connected with connecting spring, connecting spring's right-hand member face is once drawn forth the connecting piece through spring coupling screw and voltage and is connected, the fuse-link left end face is connected with the copper nut, be provided with inserts F on the copper nut, inserts F passes through the wire with the primary winding of PT ware body and is connected, and the inside software silica gel of PT end cap is connected to inserts F left end, be provided with fuse-link afterbody shielding net on the fuse-link left end, be provided with fuse-link connection section shielding net on the fuse-link right-hand member. The utility model discloses can shield a conductor effectively and discharge destruction to the epoxy, make its life extension, its erection joint safe and reliable has reliable gas seal effect, convenient to popularize and use simultaneously.
Description
Technical Field
The utility model relates to a voltage transformer technical field, concretely relates to metal armor formula voltage transformer's inner structure.
Background
A voltage transformer (PT for short) is an instrument used for transforming voltage on a line. The voltage transformer is mainly used for supplying power to a measuring instrument and a relay protection device, measuring the voltage, power and electric energy of a line, or protecting valuable equipment, a motor and a transformer in the line when the line fails, so that the capacity of the voltage transformer is small, generally only a few volt-amperes, dozens of volt-amperes, and maximally not more than one thousand volt-amperes.
For the voltage transformer product with the metal armored fully-enclosed epoxy resin cast insulation structure at present, in order to ensure that the partial discharge of the product meets the national standard, the following problems exist.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a metal armor formula voltage transformer's inner structure to the problem of proposing in the above-mentioned background art has been solved.
The utility model adopts the technical scheme as follows:
the utility model provides a metal armor formula voltage transformer's inner structure, includes fuse tube 1, fuse tube 1 right-hand member is connected with connecting spring 2, connecting spring 2's right-hand member face is once drawn forth connecting piece 4 with the voltage through spring coupling screw 3 and is connected, fuse tube 1 left end face is connected with copper nut 7, be provided with inserts F8 on the copper nut 7, inserts F8 passes through wire 18 with the primary winding of PT ware body and is connected, and the inside software silica gel 9 of PT end cap is connected to inserts F8 left end, be provided with fuse tube afterbody screen cloth 11 on fuse tube 1 left end, be provided with fuse tube linkage segment screen cloth 12 on fuse tube 1 right-hand member.
The fuse tube 1 is arranged on the upper side inside a metal shell 13 of the mutual inductor, a PT (potential transformer) body 14 is arranged on the lower side inside the metal shell 13, and semiconductor substances are uniformly coated in the metal shell 13.
The utility model discloses a connector, including metal casing 13 upper portion left side PT end cap 9, the inside software silica gel left end department of metal casing 13 upper portion left side PT end cap sets up PT end cap outside metalwork 10, and 13 upper portion right sides of metal casing are provided with PT plug software silica gel 16, are provided with epoxy centrum 17 in the PT plug software silica gel 16, epoxy centrum 17 sets up on connecting piece 4 is once drawn forth to voltage, the right-hand member that connecting piece 4 was once drawn forth to voltage is connected with installation spring 6 through an A end outside connecting piece 5, an A end outside connecting piece 5 is worn out from PT plug software silica gel 16 right-hand member.
The space between the PT body 14 and the metal shell 13 is filled with epoxy resin 19.
And an observation window cover plate 15 is arranged on the side wall of the metal shell 13.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses an install the shielding net additional at a fuse tube both ends, the electric charge shielding that will disperse is in a conductor side, and effectual shielding primary conductor discharges to the epoxy and destroys. And meanwhile, semiconductor substances are uniformly coated in the metal shell, so that an electric field in the product is shielded and more uniform, and partial discharge of the product is ensured to meet requirements.
2. The utility model discloses an adopt rigidity copper spring design at an end tip, deepen during the installation in the air chamber along with the installation impel spring can be compressed inwards, until a plug toper structure and air chamber centrum locking, guarantee that the product is centrum electric connection in the air chamber of an end reliable.
3. The utility model discloses an adopt software silica gel technology preparation PT end cap at a time end offside, impel inwards when making the installation of product end cap and can more and more tighten, guarantee sealed reliable until locking, have reliable gas seal effect when making it satisfy it and insert the air chamber when installing and using in the SF6 gas.
4. The utility model discloses an appearance is during the plug of toper structure inserts the air chamber, deepens during the installation in the air chamber and can more and more tightly along with the installation impels inwards, guarantees sealed reliable until locking.
To sum up, the utility model discloses can shield a conductor effectively and discharge to destroy to the epoxy, make its life extension, its erection joint safe and reliable has reliable gas seal effect, convenient to popularize and use simultaneously.
Drawings
Fig. 1 is a schematic structural view of the present invention;
shown in the figure: a fuse tube 1; a connecting spring 2; a spring attachment screw 3; the voltage primary leading-out connecting piece 4; a primary A-end external connection 5; the spring 6 is installed at one time; a copper nut 7; an insert F8; soft silica gel 9 inside the PT plug; a PT bulkhead external metal piece 10; a fuse tube tail shielding net 11; a fuse tube connection section shielding net 12; a metal case 13; a PT body 14; an observation window cover plate 15; PT plug soft silica gel 16; an epoxy cone 17; a lead wire 18; and an epoxy resin 19.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
As shown in fig. 1, this embodiment provides an inner structure of a metal armored voltage transformer, which includes a fuse tube 1, the right end of the fuse tube 1 is connected to a connecting spring 2, the right end face of the connecting spring 2 is connected to a primary voltage leading-out connecting piece 4 through a spring connecting screw 3, the left end face of the fuse tube 1 is connected to a copper nut 7, the copper nut 7 fixes the fuse tube, and is connected to and conducted with the left end face of the fuse tube, an insert F8 is provided on the copper nut 7, the insert F8 is connected to and conducted with the copper nut 7, the insert F8 is connected to a primary winding of a PT body through a wire 18, the left end of the insert F8 is connected to an internal soft silica gel 9 of a PT plug, the internal soft silica gel 9 of the PT plug is tightly attached to epoxy resin, so as to prevent air leakage and cause air breakdown, a fuse tube tail shielding net 11 is provided on the left end of the fuse tube 1, and a fuse tube connecting section shielding net 12 is provided on the right end of the fuse tube 1. The shielding net arranged can play a role in balancing an electric field and reducing partial discharge.
The fuse tube 1 is arranged on the upper side inside a metal shell 13 of the mutual inductor, a PT (potential transformer) body 14 is arranged on the lower side inside the metal shell 13, a secondary lead is led out from the lower side of the metal shell 13, and semiconductor substances are uniformly coated in the metal shell 13. The PT body 14 and the metal shell 13 are filled with epoxy resin 19, so that insulation is maintained between the PT body and the metal shell. And an observation window cover plate 15 is arranged on the side wall of the metal shell 13. The observation window cover plate 15 facilitates adjustment of the insulation distance during assembly of the vessel body.
The PT plug is characterized in that a PT plug external metal piece 10 is arranged at the left end of a PT plug internal soft silica gel 9 on the left side of the upper portion of a metal shell 13, a fuse tube is rotated to the rear from the position, a plug is additionally installed, a PT plug soft silica gel 16 is arranged on the right side of the upper portion of the metal shell 13, an epoxy cone 17 is arranged in the PT plug soft silica gel 16, the epoxy cone 17 is arranged on a voltage primary leading-out connecting piece 4, the right end of the voltage primary leading-out connecting piece 4 is connected with a primary installation spring 6 through a primary A-end external connecting piece 5, and the primary A-end external connecting piece 5 penetrates out of the right end of the PT plug soft silica gel 16.
The utility model discloses a single-phase metal armor totally enclosed epoxy resin pouring insulation system product satisfies the national standard regulation for guaranteeing product partial discharge, because the fusing tube both ends are the exposed connector of metal, and the product can produce discharge failure to the epoxy body under the circular telegram operational environment, can destroy under the long-term operation and insulate, makes its puncture burn out, the utility model discloses a fusing tube both ends install the shielding net additional, the charge shielding that will disperse is in a conductor side, and effectual shielding primary conductor discharges and destroys to the epoxy body. In addition the utility model discloses evenly paint the semiconductor material in the metal casing, shield the inside electric field of product, make it more even, guarantee product partial discharge and satisfy the requirement.
The utility model discloses owing to will install in the SF6 gas and use, for guaranteeing that voltage transformer once ends centrum electric conductor connection in the air chamber reliable, once ends tip adopts rigidity copper spring design, goes deep into in the air chamber during the installation along with the installation impel spring can be compressed inwards, and until a plug toper structure and air chamber centrum locking, guarantee that the product once ends the contact reliably.
The utility model discloses because install the use in SF6 is gaseous, it is crucial that this product has reliable gas seal effect. In order to meet the requirement of gas sealing, the product is inserted into the gas chamber to have a sealing effect, and in order to meet the requirement, the end caps made of soft silica gel technology are arranged on the opposite sides of the primary end of the product, and the end caps of the product are pushed inwards to be tighter and tighter when being installed until being locked to ensure reliable sealing. In addition, the plug is inserted into the air chamber for one time, the appearance of the plug is of a conical structure, and the plug is inserted into the air chamber and pushed inwards along with installation during installation to be tighter and tighter until being locked to ensure reliable sealing.
Claims (5)
1. The utility model provides a metal armor formula voltage transformer's inner structure, includes fuse tube (1), its characterized in that, fuse tube (1) right-hand member face is connected with coupling spring (2), the right-hand member of coupling spring (2) is passed through spring coupling screw (3) and is once drawn forth connecting piece (4) with voltage and be connected, fuse tube (1) left end face is connected with copper nut (7), be provided with inserts F (8) on copper nut (7), inserts F (8) pass through wire (18) with the primary winding of PT ware body and are connected, and inside software silica gel (9) of PT end cap are connected to inserts F (8) left end, be provided with fuse tube afterbody shielding net (11) on fuse tube (1) left end, be provided with fuse tube linkage segment shielding net (12) on fuse tube (1) right-hand member.
2. The internal structure of a metal-clad voltage transformer according to claim 1, wherein: the fuse tube (1) is arranged on the upper side inside a metal shell (13) of the mutual inductor, a PT (potential transformer) body (14) is arranged on the lower side inside the metal shell (13), and semiconductor substances are uniformly coated in the metal shell (13).
3. The internal structure of a metal-clad voltage transformer according to claim 2, wherein: inside software silica gel (9) the left end department of metal casing (13) upper portion left side PT end cap sets up PT end cap outside metalwork (10), and metal casing (13) upper portion right side is provided with PT plug software silica gel (16), is provided with epoxy centrum (17) in PT plug software silica gel (16), epoxy centrum (17) set up on connecting piece (4) are once drawn forth in voltage, the right-hand member that connecting piece (4) were once drawn forth in voltage is connected with an installation spring (6) through an A end external connection spare (5), a A end external connection spare (5) are worn out from PT plug software silica gel (16) right-hand member.
4. The internal structure of a metal-clad voltage transformer according to claim 2, wherein: and the PT body (14) and the metal shell (13) are filled with epoxy resin (19).
5. The internal structure of a metal-clad voltage transformer according to claim 2, wherein: and an observation window cover plate (15) is arranged on the side wall of the metal shell (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222187010.3U CN218214973U (en) | 2022-08-19 | 2022-08-19 | Metal armored voltage transformer's inner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222187010.3U CN218214973U (en) | 2022-08-19 | 2022-08-19 | Metal armored voltage transformer's inner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218214973U true CN218214973U (en) | 2023-01-03 |
Family
ID=84657170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222187010.3U Active CN218214973U (en) | 2022-08-19 | 2022-08-19 | Metal armored voltage transformer's inner structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218214973U (en) |
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2022
- 2022-08-19 CN CN202222187010.3U patent/CN218214973U/en active Active
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