CN210467473U

CN210467473U - Small-size large-capacity primary-secondary fusion voltage transformer

Info

Publication number: CN210467473U
Application number: CN201921586238.1U
Authority: CN
Inventors: 董自刚; 董自强; 张立
Original assignee: Kuyud Electrical Suzhou Co ltd
Current assignee: Kuyud Electrical Suzhou Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-05-05
Anticipated expiration: 2029-09-23

Abstract

The utility model relates to a voltage transformer technical field just discloses small-size large capacity once and twice fusion voltage transformer, including voltage transformer, voltage transformer's inner chamber fixed mounting has the iron core, the top fixed mounting of iron core has first winding, the last fixed surface of first winding installs the collets, the last fixed surface of collets installs the second winding, two head rods, two of the last fixed surface of second winding connect the other end fixedly connected with second binding post of head rod. The utility model discloses an adopt the pouring of electromagnetic type epoxy, high-pressure fuse protection to have and prevent ferromagnetic resonance function, can be 10KV for rated voltage, the frequency is measuring instrument among 50HZ or the 60HZ electric power system, and the electric energy measurement of other similar electrical apparatus of relay is measured or relay protection uses, and the device is effectual to have reduceed manufacturing cost, has also improved the life of equipment simultaneously.

Description

Small-size large-capacity primary-secondary fusion voltage transformer

Technical Field

The utility model relates to a voltage transformer technical field specifically is small-size large capacity once or twice fuses voltage transformer.

Background

The voltage transformer is an instrument for transforming voltage on a line, but the purpose of transforming the voltage by the transformer is to transmit electric energy, so the capacity is very large, and the capacity is generally measured by kilovolt-ampere or megavolt-ampere as a calculation unit; 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 300 VA.

Most of the existing voltage transformers are made of steel, the voltage transformers are prone to power failure when subjected to high voltage in the using process, the existing voltage transformers made of steel are poor in corrosion resistance, moisture resistance and mildew resistance in the using process, and accordingly equipment is prone to damage in the using process.

SUMMERY OF THE UTILITY MODEL

The utility model is not enough to prior art, the utility model provides a small-size large capacity once and twice fuses voltage transformer, possess and adopt the pouring of electromagnetic type epoxy, from having the ferromagnetic resonance function of preventing, it is better anticorrosive, dampproofing and the advantage of mould proof ability, it adopts steel preparation to form mostly to have solved current voltage transformer, it is apt to appear the outage phenomenon when it meets with the high pressure at the in-process that uses, and it is anticorrosive at the in-process that uses that current voltage transformer made by steel, dampproofing and mould proof ability are relatively poor, lead to equipment easy the emergence damage at the in-process that uses, and the problem that ferromagnetic resonance equipment used is prevented in the in-process that uses to the equipment that has now need the cooperation.

The utility model provides a following technical scheme: the small-size high-capacity primary-secondary fusion voltage transformer comprises a voltage transformer, wherein an iron core is fixedly arranged in an inner cavity of the voltage transformer, a first winding is fixedly arranged at the top of the iron core, an insulating block is fixedly arranged on the upper surface of the first winding, a second winding is fixedly arranged on the upper surface of the insulating block, the upper surface of the second winding is fixedly connected with two first connecting rods, the other ends of the two first connecting rods are fixedly connected with a second connecting terminal, an insulating sleeve is fixedly sleeved on the outer wall of the second connecting terminal, two sides of the iron core are fixedly connected with second connecting rods, the other end of the second connecting rod on the left side is fixedly connected with a first connecting terminal, the other end of the second connecting rod on the right side is fixedly connected with a third connecting terminal, and the outer walls of the first connecting terminal and the third connecting terminal are fixedly, the voltage transformer is characterized in that a nameplate is fixedly mounted on the outer wall of the voltage transformer, radiating fins are fixedly mounted on two sides of the nameplate, and two wiring ports are formed in the upper surface of the voltage transformer.

Preferably, the first connecting terminal, the second connecting terminal and the third connecting terminal are equal in size, the first connecting terminal, the second connecting terminal and the third connecting terminal are located on the same horizontal line, the first connecting terminal is located on the left side of the second connecting terminal, and the third connecting terminal is located on the right side of the second connecting terminal.

Preferably, the outer wall of the voltage transformer is poured by electromagnetic epoxy resin.

Preferably, the bottom plate of the voltage transformer is made of a Q235 steel plate, and the surface of the bottom plate is coated with a zinc coating.

Preferably, the width value of the voltage transformer is 340mm, the depth value of the voltage transformer is 540mm, and the height value of the voltage transformer is 295 mm.

Preferably, the capacity of the voltage transformer is 600 va.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the small-size high-capacity primary and secondary fusion voltage transformer is poured by adopting electromagnetic epoxy resin, is protected by a high-voltage fuse, has an anti-ferromagnetic resonance function, can be used as a measuring instrument in a power system with the rated voltage of 10KV and the frequency of 50HZ or 60HZ, and is used for electric energy measurement or relay protection of other similar electric appliances of a relay, effectively reduces the manufacturing cost, and simultaneously prolongs the service life of equipment.

2. This small-size large capacity once and twice fuses voltage transformer through adopting totally closed structure, has good anticorrosive, dampproofing and mould proof performance, and a high pressure adopts standard cable elbow head to connect, and the porcelain imitation resonance connected mode is adopted to the mutual-inductor inside 4PT, and the mutual-inductor itself has good anti-resonance function, does not need any anti-ferromagnetic resonance measure in use.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the structure of the present invention;

FIG. 3 is a top view of the structure of the present invention

Fig. 4 is a schematic diagram illustrating the structure wiring principle of the present invention.

In the figure: 1. a voltage transformer; 2. a first connection terminal; 3. a second connection terminal; 4. a third connection terminal; 5. an insulating sleeve; 6. a heat sink; 7. a nameplate; 8. a first connecting rod; 9. a second connecting rod; 10. an insulating block; 11. an iron core; 12. a first winding; 13. a second winding; 14. and a wiring port.

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. 1-3, a small-sized, large-capacity, primary and secondary fusion voltage transformer includes a voltage transformer 1, the voltage transformer 1 is tested according to a kit before installation, insulation, error, partial discharge and other items are required, in the operation process, it is required to ensure that the secondary winding of the voltage transformer is not used is open-circuited, otherwise the transformer may be damaged, a grounding bolt is reliably grounded, no resonance elimination measure is required during use, the outer wall of the voltage transformer is poured by epoxy resin, the electromagnetic epoxy resin is adopted for pouring, the high-voltage fuse is protected, and has a ferromagnetic resonance elimination function, such as a measuring instrument in a power system with a rated voltage of 10KV and a frequency of 50HZ or 60HZ, and a relay is used for electric energy measurement or relay protection of other similar electric appliances, the device effectively reduces the manufacturing cost, and simultaneously prolongs the service life of the equipment, the bottom plate of the voltage transformer 1 is prepared by a Q235 steel plate, the surface of the bottom plate is coated with a zinc coating, the width of the voltage transformer is 340mm and is far smaller than the width of 465mm on the market, the depth of the voltage transformer is 540mm, the height of the voltage transformer is 295mm, an iron core 11 is fixedly arranged in an inner cavity of the voltage transformer 1, a first winding 12 is fixedly arranged at the top of the iron core 11, an insulating block 10 is fixedly arranged on the upper surface of the first winding 12, a second winding 13 is fixedly arranged on the upper surface of the insulating block 10, two first connecting rods 8 are fixedly connected with the upper surface of the second winding 13, the other ends of the two first connecting rods 8 are fixedly connected with a second connecting terminal 3, an insulating sleeve 5 is fixedly sleeved on the outer wall of the second connecting terminal 3, the two sides of the iron core 11 are fixedly connected with second connecting rods 9, and the other end of the, the other end of the right second connecting rod 9 is fixedly connected with a third connecting terminal 4, the first connecting terminal 2, the second connecting terminal 3 and the third connecting terminal 4 are equal in size, the o phase is a test terminal (a dn1 and a dn3 short wire must be disconnected during test grounding), the dn1 and the dn3 must be short-circuited during normal operation, the o phase must be suspended during normal operation, the N end is directly grounded for the first time, other devices such as a harmonic elimination device are not allowed to be grounded, otherwise, PT is burnt, the line voltages of the second time 2a-2b, 2b-2c and 2a-2c are respectively 220v when the operation power supply is used, a relay or a microcomputer is used between the first time N end and the second time da-dn, a second harmonic elimination device is not allowed, otherwise, the PT is burnt, the first connecting terminal 2, the second connecting terminal 3 and the third connecting terminal 4 are located on the same horizontal line, the first connecting terminal 2 is located on the left side of the second connecting, the third connecting terminal 4 is positioned at the right side of the second connecting terminal 3, the outer walls of the first connecting terminal 2 and the third connecting terminal 4 are fixedly sleeved with another insulating sleeve 5, the outer wall of the voltage transformer 1 is fixedly provided with a nameplate 7, the two sides of the nameplate 7 are fixedly provided with radiating fins 6, the upper surface of the voltage transformer 1 is provided with two connecting ports 14, the device has no gas, steam, chemical deposition and other explosive and corrosive media which seriously affect the insulation of the transformer in the installation production place, by adopting a totally-enclosed structure, the anti-corrosion, moisture-proof and mould-proof performance is good, the primary high voltage is connected by adopting a standard cable elbow joint, the inner part of the transformer adopts a 4PT porcelain-imitating resonance connection mode, the transformer has a good anti-resonance function, no ferromagnetic resonance prevention measures are needed in use, and the capacity of the voltage transformer is 600va and is far larger than the 300va capacity in the market.

The working principle is that the basic structure is an iron core 11, a first winding 12 and a second winding 13, and the voltage transformer is characterized in that the capacity is very small and constant, the voltage transformer is close to an idle state in normal operation, a primary side of the voltage transformer 1 is connected with a fuse, a secondary side of the voltage transformer is reliably grounded, when the first winding 12 and the second winding 13 are damaged in an insulation mode, the first winding 12 has a high potential to the ground to cause personal and equipment accidents, the voltage transformer for measurement is generally made into a single-phase double-coil structure, the primary side voltage of the voltage transformer is measured voltage, and the voltage transformer can be used in a single phase or two voltage transformers are connected into a V-V shape to be used in.

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. Small-size large capacity one secondary fusion voltage transformer, including voltage transformer (1), its characterized in that: an iron core (11) is fixedly arranged in an inner cavity of the voltage transformer (1), a first winding (12) is fixedly arranged at the top of the iron core (11), an insulating block (10) is fixedly arranged on the upper surface of the first winding (12), a second winding (13) is fixedly arranged on the upper surface of the insulating block (10), two first connecting rods (8) are fixedly connected to the upper surface of the second winding (13), a second connecting terminal (3) is fixedly connected to the other ends of the two first connecting rods (8), an insulating sleeve (5) is fixedly sleeved on the outer wall of the second connecting terminal (3), second connecting rods (9) are fixedly connected to two sides of the iron core (11), a first connecting terminal (2) is fixedly connected to the other end of the second connecting rod (9) on the left side, a third connecting terminal (4) is fixedly connected to the other end of the second connecting rod (9) on the right side, the outer wall of first binding post (2) and third binding post (4) is fixed to be cup jointed another insulating cover (5), the outer wall fixed mounting of voltage transformer (1) has data plate (7), the both sides fixed mounting of data plate (7) has fin (6), two wiring mouth (14) have been seted up to the upper surface of voltage transformer (1).

2. The small-sized large-capacity primary-secondary fusion voltage transformer according to claim 1, wherein: the size of first binding post (2), second binding post (3) and third binding post (4) equals, first binding post (2), second binding post (3) and third binding post (4) are located and are the same as water flat line, first binding post (2) are located the left side of second binding post (3), third binding post (4) are located the right side of second binding post (3).

3. The small-sized large-capacity primary-secondary fusion voltage transformer according to claim 1, wherein: the outer wall of the voltage transformer (1) is poured by epoxy resin.

4. The small-sized large-capacity primary-secondary fusion voltage transformer according to claim 1, wherein: the bottom plate of the voltage transformer (1) is prepared from a Q235 steel plate, and the surface of the bottom plate is coated with a zinc coating.

5. The small-sized large-capacity primary-secondary fusion voltage transformer according to claim 1, wherein: the width value of voltage transformer is 340mm, voltage transformer's degree of depth is 540mm, voltage transformer's height value is 295 mm.

6. The small-sized large-capacity primary-secondary fusion voltage transformer according to claim 1, wherein: the capacity of the voltage transformer is 600 va.