CN209912651U

CN209912651U - Pour insulating voltage transformer

Info

Publication number: CN209912651U
Application number: CN201920639429.3U
Authority: CN
Inventors: 胡宁; 刘新卫; 刘凤娇; 其他发明人请求不公开姓名
Original assignee: Dongying Power Supply Co of State Grid Shandong Electric Power Co Ltd
Current assignee: Dongying Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date: 2018-06-26
Filing date: 2019-05-07
Publication date: 2020-01-07
Anticipated expiration: 2029-05-07

Abstract

The utility model discloses a pouring insulation voltage transformer, which comprises a pouring shell and a base, wherein the bottom of the pouring shell is provided with the base, one side of the base is provided with a secondary connecting terminal, the utility model discloses a dust cover is arranged at the periphery of the secondary connecting terminal of the existing pouring insulation voltage transformer and a shielding layer is arranged on a primary winding, a sheath is also arranged on a wire hole of the dust cover arranged outside the secondary connecting terminal, a rubber layer is arranged in the sheath, which can protect the secondary wiring and increase the tightness of the dust cover, thereby reducing the dust entering the dust cover, preventing the short circuit between the terminals caused by the deposition of a large amount of dust, the shielding layer is composed of a rubber ring and a high-resistance conductor, the rubber ring is adopted to ensure that the shielding layer has the elastic deformation capability, the self elasticity is utilized to be fixed on a shielded body, and simultaneously, the good shielding effect is achieved, the problem of voltage transformer after having solved and having built has partial discharge is solved.

Description

Pour insulating voltage transformer

Technical Field

The utility model belongs to the technical field of voltage transformer is relevant, concretely relates to pour insulating voltage transformer.

Background

Voltage transformers, like transformers, are instruments used to transform the voltage on a line. However, the purpose of transforming voltage by the transformer is to transmit electric energy, so the capacity is large, and the capacity is generally calculated by kilovolt-ampere or mega volt-ampere; 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 and dozens of volt-amperes, and the maximum voltage of the voltage transformer does not exceed one thousand volt-amperes.

The prior art has the following problems: the periphery of a secondary wiring terminal of an existing pouring insulation voltage transformer is not provided with protective measures and is in an exposed state, dust easily falls on the wiring terminal part in an outdoor use process, a large amount of deposited dust can cause short circuit between terminals, accident potential exists, a primary winding of the existing pouring insulation voltage transformer basically has no shielding structure, and therefore an electric field of the primary winding part is concentrated, a local discharge value is large, and product quality is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pour insulating voltage transformer to solve a large amount of dusts of deposit that proposes in the above-mentioned background art and can cause short circuit and the problem of no shielding structure between the terminal.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pour insulating voltage transformer, is including pouring shell and base, the bottom of pouring the shell is provided with the base, one side of base is provided with secondary binding post, secondary binding post's outside is provided with the dust cover, one side of dust cover is provided with the wire hole, be provided with the sheath on the wire hole, the outside top of sheath is provided with the pullover, the opposite side of dust cover is provided with the stationary blade, be provided with the mounting hole on the stationary blade, the dust cover passes through mounting hole and screw fixed connection with the base, it is provided with unshakable in one's determination to pour the inside shell, be provided with primary winding on the unshakable in one's determination, be provided with the shielding layer on the primary winding, be connected with the conducting rod on the unshakable in one's determination.

Preferably, the shielding layer is composed of a rubber ring and a high resistance conductor.

Preferably, the number of the mounting holes and the screws is four.

Preferably, a sealing gasket is arranged between the dust cover and the base.

Preferably, the dust cover is made of a plastic material.

Preferably, a rubber layer is arranged in the sheath.

Preferably, the inner diameter of the rubber ring on the shielding layer is smaller than the outer diameter of the primary winding.

Preferably, the shielding layer is adhered to the end portion of the outer circle of the primary winding by using a conductive adhesive.

Compared with the prior art, the utility model provides a pour insulating voltage transformer possesses following beneficial effect: the utility model discloses set up the dust cover and set up the shielding layer on primary winding in current secondary binding post's of pouring insulating voltage transformer's periphery, still be provided with the sheath on the wire hole of the outer dust cover of secondary binding post of setting simultaneously, be equipped with the rubber layer in the sheath, can protect the secondary wiring and increase the seal of dust cover, thereby reduce in the dust gets into the dust cover, prevent to cause the short circuit between the terminal because of a large amount of dusts of deposit, the shielding layer of setting comprises rubber circle and high resistance conductor, adopt the rubber circle to make the shielding layer have elastic deformation's ability, can utilize the elasticity of self to fix on being shielded the body, good shielding effect has simultaneously, thereby the voltage transformer after the solution is pour has partial discharge's problem.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of the overall structure of a poured insulation voltage transformer provided by the utility model;

fig. 2 is a schematic view of a shielding layer structure provided by the present invention;

fig. 3 is a schematic structural view of the dust cover provided by the present invention;

fig. 4 is a schematic view of the sheath structure of the present invention;

in the figure: 1. a base; 2. casting the shell; 3. a high voltage insulating bushing; 4. a primary wiring terminal; 5. a secondary wiring terminal; 6. an iron core; 7. a primary winding; 8. a shielding layer; 9. a conductive rod; 10. mounting holes; 11. a dust cover; 12. a sheath; 13. a wire outlet hole; 14. screws; 15. a fixing sheet; 16. a rubber layer; 17. and (5) sleeving a head.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a pour insulating voltage transformer, is including pouring shell 2 and base 1, its characterized in that: the bottom of pouring the shell 2 is provided with the base 1, one side of the base 1 is provided with the secondary wiring terminal 5, the outside of the secondary wiring terminal 5 is provided with the dust cover 11, one side of the dust cover 11 is provided with the wire hole 13, the wire hole 13 is provided with the sheath 12, the outside top end of the sheath 12 is provided with the sleeve head 17, the other side of the dust cover 11 is provided with the fixing piece 15, the fixing piece 15 is provided with the mounting hole 10, the dust cover 11 and the base 1 are fixedly connected through the mounting hole 10 and the screw 14, the inside of pouring the shell 2 is provided with the iron core 6, the iron core 6 is provided with the primary winding 7, the primary winding 7 is provided with the shielding layer 8, the iron core 6 is connected with the conducting rod 9, the primary wiring terminal 4.

Further, the shielding layer 8 is composed of a rubber ring and a high-resistance conductor, and the shielding layer 8 can be elastically fixed on the shielded body by utilizing the elastic deformation capacity of the rubber ring.

Furthermore, the number of the mounting holes 10 and the number of the screws 14 are four, and the four corners of the dust cover 11 are respectively fixed by the mounting holes 10 and the screws 14, so that the dust cover 11 can be firmly and stably fixed on the base 1.

Further, a sealing gasket is arranged between the dust cover 11 and the base 1, so that the airtightness can be improved, and dust can be prevented from entering the dust cover 11 through a connecting gap.

Furthermore, the dust cover 11 is made of plastic material, so that the manufacturing cost can be reduced, and meanwhile, a good protection effect can be achieved.

Further, the rubber layer 16 is arranged in the sheath 12, so that the wiring can be protected, meanwhile, the tightness is increased, and dust is prevented from entering the dust cover 11 from the wire outlet 13.

Further, the inner diameter of the rubber ring on the shielding layer 8 is smaller than the outer diameter of the primary winding 7, so that the rubber ring can fix the high-resistance conductor on the primary winding 7 through the elasticity of the rubber ring.

Furthermore, the shielding layer 8 is bonded to the end portion of the outer circle of the primary winding 7 by conductive glue, and the shielding layer 8 and the primary winding 7 can be reliably connected by using the adhesion of the conductive glue.

The utility model discloses a theory of operation and use flow: after the utility model is installed, the pouring insulation voltage transformer is taken out from the warehouse, moved to the position needed to be used and fixed, the high voltage electric power system is connected on the primary connecting terminal 4, the high voltage electric power flows through the winding and the iron core 6 in the transformer through the conducting rod 9 to transform the voltage on the line, the low voltage electric power is output through the secondary connecting terminal 5, thereby facilitating people to measure the voltage, the power and the electric energy, the high voltage electric power is arranged on the primary winding 7, the shielding layer 8 consisting of the rubber ring and the high resistance conductor has good shielding effect, thereby preventing the voltage transformer from partial discharge when in work, the dust cover 11 is arranged on the secondary connecting terminal 5, the line is connected through the wire outlet 13 on the dust cover 11, meanwhile, the sheath 12 consisting of the rubber layer 16 and the sleeve head 17 and arranged on the wire outlet 13 can protect the line, the airtightness can be improved, dust is prevented from entering the dust cover 11, and the voltage transformer is guaranteed not to be short-circuited due to the fact that dust is deposited on the surface of the secondary wiring terminal 5 in long-term outdoor use engineering.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pour insulating voltage transformer, is including pouring shell (2) and base (1), its characterized in that: the bottom of pouring shell (2) is provided with base (1), one side of base (1) is provided with secondary binding post (5), the outside of secondary binding post (5) is provided with dust cover (11), one side of dust cover (11) is provided with wire hole (13), be provided with sheath (12) on wire hole (13), the outside top of sheath (12) is provided with pullover (17), the opposite side of dust cover (11) is provided with stationary blade (15), be provided with mounting hole (10) on stationary blade (15), dust cover (11) and base (1) are through mounting hole (10) and screw (14) fixed connection.

2. A cast insulated voltage transformer according to claim 1, characterized in that: the number of the mounting holes (10) and the number of the screws (14) are four.

3. A cast insulated voltage transformer according to claim 1, characterized in that: and a sealing gasket is arranged between the dust cover (11) and the base (1).

4. A cast insulated voltage transformer according to claim 1, characterized in that: the dust cover (11) is made of plastic materials.

5. A cast insulated voltage transformer according to claim 1, characterized in that: a rubber layer (16) is arranged in the sheath (12).

6. The utility model provides a pour insulating voltage transformer, is including pouring shell (2) and base (1), its characterized in that: an iron core (6) is arranged inside the pouring shell (2), a primary winding (7) is arranged on the iron core (6), a shielding layer (8) is arranged on the primary winding (7), a conductive rod (9) is connected onto the iron core (6), a primary wiring terminal (4) is connected onto the top end of the conductive rod (9), and a high-voltage insulating sleeve (3) is arranged on the conductive rod (9).

7. The cast insulated voltage transformer of claim 6, wherein: the shielding layer (8) is composed of a rubber ring and a high-resistance conductor.

8. The cast insulated voltage transformer of claim 6, wherein: the inner diameter of the rubber ring on the shielding layer (8) is smaller than the outer diameter of the primary winding (7).

9. The cast insulated voltage transformer of claim 6, wherein: the shielding layer (8) is bonded to the end part of the outer circle of the primary winding (7) by conductive glue.