CN211828451U

CN211828451U - Three-phase voltage transformer

Info

Publication number: CN211828451U
Application number: CN202020108783.6U
Authority: CN
Inventors: 何松辉; 黄佳欣; 李萍; 董会杰
Original assignee: Henan Zhuoda Electric Co ltd
Current assignee: Henan Zhuoda Electric Co ltd
Priority date: 2020-01-18
Filing date: 2020-01-18
Publication date: 2020-10-30
Anticipated expiration: 2030-01-18

Abstract

The utility model discloses a three-phase voltage transformer, the power distribution box comprises a box body, the bottom fixedly connected with motor of box inner wall, the output shaft fixedly connected with threaded rod of motor, the surface of threaded rod has the push rod through screw thread piece threaded connection, the top fixedly connected with on push rod surface pushes away the ball, the sliding surface of pushing away the ball is connected with the sliding plate, the left side fixedly connected with backup pad at sliding plate top. A three-phase voltage transformer, be equipped with insulator and motor, can install non-linear resistance type harmonic elimination ware additional at three-phase voltage transformer neutral point, can be when the ungrounded system of neutral point uses, restriction high pressure is gushed and is prevented ferromagnetic resonance overvoltage and burn out voltage transformer, can also prevent to cause the damage to three-phase voltage transformer to improve three-phase voltage transformer's life, practiced thrift the cost, excellent in use effect brings better use prospect.

Description

Three-phase voltage transformer

Technical Field

The utility model relates to a voltage transformer technical field specifically is a three-phase voltage transformer.

Background

The voltage transformer, PT for short, is an instrument used to transform the voltage on a line, similar to a transformer. 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 existing voltage transformer relates to a three-phase voltage transformer, but the existing three-phase voltage transformer has the defects that the protection measures are perfect in the using process, and when the three-phase voltage transformer breaks down or is damaged artificially, the three-phase voltage transformer cannot be protected, so that the using effect of the three-phase voltage transformer is reduced, the cost is improved, and the using effect is not good.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to prior art not enough, the utility model provides a three-phase voltage transformer possesses advantages such as have the high accuracy, can tolerate outdoor environment, ultraviolet resistance influence, has solved and can not protect three-phase voltage transformer, has reduced three-phase voltage transformer's result of use, has improved the problem of cost.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a three-phase voltage transformer, includes the box, the bottom fixedly connected with motor of box inner wall, the output shaft fixedly connected with threaded rod of motor, the surface of threaded rod has the push rod through screw thread piece threaded connection, the top fixedly connected with who pushes away the pole surface pushes away the ball, the sliding surface of pushing away the ball is connected with the sliding plate, the left side fixedly connected with backup pad at sliding plate top, the top fixedly connected with casing of box, the top fixedly connected with framework of backup pad, the top fixedly connected with insulator of framework, the top fixedly connected with sealed cowling of insulator, the equal fixedly connected with harmonic elimination ware in both sides at backup pad top.

Preferably, the surface of push rod is provided with the smooth ball, one side fixedly connected with slide of box inner wall, the surface of slide and the surperficial sliding connection of smooth ball, one side fixedly connected with limiting plate of slide, the top of limiting plate and the top fixed connection of box inner wall, one side of limiting plate is connected with the surperficial rotation of threaded rod.

Preferably, the number of the resonance eliminators is two groups, the number of the frame bodies is three groups, the number of the porcelain sleeves is three groups, and the number of the sealing covers is three groups.

Preferably, a shell cover is arranged on the top of the shell, and an opening is formed in the surface of the shell cover.

Preferably, a support member is fixedly connected to the right side of the bottom of the support plate, and the bottom of the support member is fixedly connected to the right side of the top of the sliding plate.

Preferably, the surface of the shell is hinged with a box door through a hinge, and the surface of the box door is fixedly connected with a buckle.

(III) advantageous effects

Compared with the prior art, the utility model provides a three-phase voltage transformer possesses following beneficial effect:

1. this three-phase voltage transformer, top fixedly connected with framework through the backup pad, the top fixedly connected with insulator of framework, the top fixedly connected with sealed cowling of insulator, the equal fixedly connected with harmonic elimination ware in both sides at backup pad top, there is the high accuracy, can tolerate outdoor environment, advantages such as ultraviolet resistance influence, install non-linear resistance type harmonic elimination ware additional at three-phase voltage transformer neutral point, can be when the ungrounded system of neutral point uses, restriction high pressure inrush current and prevent ferromagnetic resonance overvoltage from burning out voltage transformer.

2. This three-phase voltage transformer, through starter motor, it rotates to drive the threaded rod, the threaded rod rotates and drives the push rod and remove, the push rod removes and drives the sliding plate and remove, the sliding plate removes and drives support piece and remove, support piece removes and drives the backup pad and removes, the backup pad removes and drives the framework and remove, when outdoor environment is not good, can contract the inside of casing with three-phase voltage transformer, be convenient for protect three-phase voltage transformer, prevent to cause the damage to three-phase voltage transformer, thereby three-phase voltage transformer's life has been improved, the cost is saved, excellent in use effect.

Drawings

Fig. 1 is a schematic structural diagram of a three-phase voltage transformer of the present invention;

fig. 2 is a front view of a casing of the three-phase voltage transformer of the present invention.

In the figure: 1. a box body; 2. a motor; 3. a threaded rod; 4. a push rod; 5. a sliding ball; 6. a slide plate; 7. a limiting plate; 8. pushing the ball; 9. a slide plate; 10. a support member; 11. a support plate; 12. a housing; 13. a shell cover; 14. an opening; 15. a frame body; 16. a porcelain bushing; 17. a sealing cover; 18. a resonance eliminator; 19. a box door; 20. and (5) buckling.

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. 1-2, a three-phase voltage transformer comprises a box body 1, a motor 2 is fixedly connected to the bottom of the inner wall of the box body 1, a power line of the motor 2 is connected with an external power supply, the model of the motor 2 is Y180M1-2, an output shaft of the motor 2 is fixedly connected with a threaded rod 3, the surface of the threaded rod 3 is connected with a push rod 4 through a threaded block and a thread, the top end of the surface of the push rod 4 is fixedly connected with a push ball 8, the surface of the push ball 8 is slidably connected with a sliding plate 9, a supporting plate 11 is fixedly connected to the left side of the top of the sliding plate 9, a shell 12 is fixedly connected to the top of the box body 1, a frame body 15 is fixedly connected to the top of the supporting plate 11, a porcelain bushing 16 is fixedly connected to the top of the frame body.

Further, the surface of push rod 4 is provided with smooth ball 5, one side fixedly connected with slide 6 of 1 inner wall of box, the surface of slide 6 and the surface sliding connection of smooth ball 5, one side fixedly connected with limiting plate 7 of slide 6, the top of limiting plate 7 and the top fixed connection of 1 inner wall of box, one side of limiting plate 7 is connected with the surface rotation of threaded rod 3, is convenient for carry on spacingly to push rod 4 to the stability of push rod 4 has been improved.

Furthermore, the number of the resonance eliminators 18 is two, the number of the frame body 15 is three, the number of the porcelain bushing 16 is three, and the number of the sealing cover 17 is three, so that when the neutral point ungrounded system is used, high-voltage inrush current can be limited, and the ferromagnetic resonance overvoltage can be prevented from burning the voltage transformer.

Further, a shell cover 13 is arranged at the top of the shell 12, and an opening 14 is formed in the surface of the shell cover 13, so that the voltage transformer can be conveniently lifted.

Further, a support member 10 is fixedly connected to the right side of the bottom of the support plate 11, and the bottom of the support member 10 is fixedly connected to the right side of the top of the sliding plate 9, so that the support plate 11 is conveniently supported.

Furthermore, a door 19 is hinged to the surface of the housing 12, and a buckle 20 is fixedly connected to the surface of the door 19, so that the equipment inside the housing 12 can be conveniently checked and maintained.

The working principle is as follows: the top of the supporting plate 11 is fixedly connected with a frame body 15, the top of the frame body 15 is fixedly connected with a porcelain bushing 16, the top of the porcelain bushing 16 is fixedly connected with a sealing cover 17, both sides of the top of the supporting plate 11 are fixedly connected with resonance eliminators 18, the three-phase voltage transformer has the advantages of high precision, tolerance to outdoor environment, ultraviolet resistance and the like, the non-linear resistance type resonance eliminators 18 are additionally arranged at the neutral point of the three-phase voltage transformer, when the neutral point ungrounded system is used, high-voltage inrush current is limited, ferromagnetic resonance overvoltage is prevented from burning the voltage transformer, the motor 2 is started to drive the threaded rod 3 to rotate, the threaded rod 3 rotates to drive the push rod 4 to move, the push rod 4 moves to drive the sliding plate 9 to move, the sliding plate 9 moves to drive the supporting piece 10 to move, the supporting plate 11 moves to drive the frame body 15 to move, when outdoor environment is not good, the three-phase voltage transformer is convenient to protect and prevented from being damaged, so that the service life of the three-phase voltage transformer is prolonged, the cost is saved, and the using effect is good.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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 three-phase voltage transformer, includes box (1), its characterized in that: the bottom of the inner wall of the box body (1) is fixedly connected with a motor (2), an output shaft of the motor (2) is fixedly connected with a threaded rod (3), the surface of the threaded rod (3) is connected with a push rod (4) through a thread block, the top end of the surface of the push rod (4) is fixedly connected with a push ball (8), the surface of the push ball (8) is connected with a sliding plate (9) in a sliding way, a supporting plate (11) is fixedly connected with the left side of the top of the sliding plate (9), the top of the box body (1) is fixedly connected with a shell (12), the top of the supporting plate (11) is fixedly connected with a frame body (15), the top of the frame body (15) is fixedly connected with a porcelain bushing (16), the top of the porcelain bushing (16) is fixedly connected with a sealing cover (17), both sides of the top of the supporting plate (11) are fixedly connected with resonance eliminators (18).

2. A three-phase voltage transformer according to claim 1, characterized in that: the surface of push rod (4) is provided with smooth ball (5), one side fixedly connected with slide (6) of box (1) inner wall, the surface sliding connection of the surface of slide (6) and smooth ball (5), one side fixedly connected with limiting plate (7) of slide (6), the top of limiting plate (7) and the top fixed connection of box (1) inner wall, one side of limiting plate (7) is connected with the surface rotation of threaded rod (3).

3. A three-phase voltage transformer according to claim 1, characterized in that: the number of the resonance eliminators (18) is two groups, the number of the frame bodies (15) is three groups, the number of the porcelain sleeves (16) is three groups, and the number of the sealing covers (17) is three groups.

4. A three-phase voltage transformer according to claim 1, characterized in that: a shell cover (13) is arranged at the top of the shell (12), and an opening (14) is formed in the surface of the shell cover (13).

5. A three-phase voltage transformer according to claim 1, characterized in that: the right side of the bottom of the supporting plate (11) is fixedly connected with a supporting piece (10), and the bottom of the supporting piece (10) is fixedly connected with the right side of the top of the sliding plate (9).

6. A three-phase voltage transformer according to claim 1, characterized in that: the surface of the shell (12) is hinged with a box door (19) through a hinge, and a buckle (20) is fixedly connected to the surface of the box door (19).