CN212810030U

CN212810030U - Primary resonance eliminator of electromagnetic voltage transformer

Info

Publication number: CN212810030U
Application number: CN202021456441.XU
Authority: CN
Inventors: 谢亚峰; 宋娇
Original assignee: Anhui Trump Electric Technology Co ltd
Current assignee: Anhui Trump Electric Technology Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-03-26
Anticipated expiration: 2030-07-22

Abstract

The utility model discloses a primary harmonic elimination device of an electromagnetic voltage transformer, which comprises a primary harmonic elimination device main body, wherein the bottom of the primary harmonic elimination device main body is fixedly connected with a base, the outer surface of one side of the base is fixedly connected with a connecting seat, the outer surface of the bottom of the base is fixedly connected with an electromagnetic voltage transformer main body, a fixing bolt is arranged between the connecting seat and the electromagnetic voltage transformer main body, the outer surface of one side of the base is fixedly connected with a connecting plate which is arranged at the top of the connecting seat, and the outer wall of one side of the connecting plate is fixedly connected with a loop bar, in the utility model, through arranging the loop bar, a telescopic rod, a telescopic spring and other devices, the outer wall of one side of the fixing bolt is provided with a groove corresponding to the telescopic rod, the telescopic spring provides elasticity for the, prevent fixing bolt's rotation pine from taking off, the device simple structure, convenient and practical.

Description

Primary resonance eliminator of electromagnetic voltage transformer

Technical Field

The utility model relates to a voltage transformer technical field especially relates to a harmonic elimination ware of electromagnetic type voltage transformer.

Background

The voltage transformer is a high-voltage equipment which can convert the high voltage in the electric network into low voltage and is convenient for monitoring and measuring, and is a step-down transformer with small capacity, small volume and large voltage ratio, and its basic principle is identical to that of transformer, and is formed from primary and secondary windings, iron core, leading-out wire and insulating structure, and its working principle, structure and connecting method of electromagnetic voltage transformer are identical to that of transformer, and its main difference lies in that the capacity of voltage transformer is very small, and generally only several tens to several hundreds of volt-amperes, and the application of primary harmonic eliminator is: when a bus is empty or a few outgoing lines are available, the voltage transformer is supersaturated due to excitation of reasons such as closing charging or ground fault elimination in operation, ferromagnetic resonance overvoltage is possibly generated, the voltage to ground is unstable, ground indication malfunction occurs, abnormal phenomena such as PT high-voltage fuse fusing and the like occur, the PT is burned out seriously, and other accidents are caused, and a resonance eliminator needs to be installed in the electromagnetic voltage transformer (PT for short) in a 6-35 kV neutral point ungrounded power grid.

When the primary resonance eliminator normally operates, the resonance eliminator generally bears 3 times of zero sequence voltage, and the resonance eliminator is often burnt out due to long-term overvoltage heating, and in practical situations, the problems that the resonance eliminator heats seriously, the external insulation is damaged, the measured temperature is up to 102 ℃, and the heat dissipation of the resonance eliminator is particularly important are found in a pre-test, so that a new primary resonance eliminator of an electromagnetic voltage transformer is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a primary harmonic eliminator of an electromagnetic voltage transformer.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the primary harmonic eliminator of the electromagnetic voltage transformer comprises a primary harmonic eliminator main body, wherein a base is fixedly connected to the bottom of the primary harmonic eliminator main body, a connecting seat is fixedly connected to the outer surface of one side of the base, the electromagnetic voltage transformer main body is fixedly connected to the outer surface of the bottom of the base, a fixing bolt is arranged between the connecting seat and the electromagnetic voltage transformer main body, a connecting plate is fixedly connected to the outer surface of one side of the base and positioned at the top of the connecting seat, a loop bar is fixedly connected to the outer wall of one side of the connecting plate, an expansion spring is fixedly connected to the inner wall of one side of the loop bar, an expansion link is fixedly connected to the tail end of one side of the expansion spring, a copper sleeve is fixedly sleeved on the outer side of the primary harmonic eliminator main body, a copper pipe is fixedly connected to the, and a heat radiation fan is fixedly arranged on the outer surface of the top of the extension seat and at a position corresponding to the aluminum heat radiation fins.

As a further description of the above technical solution:

and a threaded connecting hole is formed in the connecting seat at a position corresponding to the fixing bolt.

As a further description of the above technical solution:

and a fixing screw is arranged between the connecting plate and the base, and the connecting plate is fixedly connected with the base through the fixing screw.

As a further description of the above technical solution:

and a through hole is formed in the position, corresponding to the telescopic rod, in one side of the loop bar.

As a further description of the above technical solution:

the side outer surface of the periphery of the telescopic rod is evenly provided with a plurality of groups of anti-skidding lines, and the outer wall of one side of the fixing bolt is provided with a groove corresponding to the telescopic rod.

As a further description of the above technical solution:

the number of the copper pipes is two, and the two copper pipes are symmetrical with respect to the central axis of the copper sleeve.

The utility model discloses following beneficial effect has:

1. the utility model provides an electromagnetic type voltage transformer's harmonic elimination ware once compares with traditional device, through being provided with devices such as loop bar, telescopic link, expanding spring, fixing bolt one side outer wall and the corresponding position of telescopic link have seted up flutedly, and expanding spring provides elasticity for the telescopic link, inserts the telescopic link in the recess, prevents that fixing bolt long-time use and pine from taking off, fixes fixing bolt through the telescopic link, prevents that fixing bolt's rotation pine from taking off, the device simple structure, convenient and practical.

2. The device compares with traditional device, its structure and design all have great innovation and improvement, through being provided with devices such as copper sleeve, copper pipe, aluminium system heat radiation fins and radiator fan, copper sleeve has good heat conductivity, will once dispel the harmonic ware main part and conduct to aluminium system heat radiation fins on through copper pipe at the heat that the during operation produced, rethread radiator fan dispels the heat to aluminium system heat radiation fins, can continuously dissipate the heat that once dispels harmonic ware main part work and produce, prevent that the high explosion that leads to of inside temperature, be worth wideling popularize.

Drawings

Fig. 1 is a front view structural diagram of a primary resonance eliminator of an electromagnetic voltage transformer according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic view of the internal structure of the loop bar.

Illustration of the drawings:

1. a primary resonance eliminator main body; 2. a base; 3. fixing the bolt; 4. a connecting seat; 5. an electromagnetic voltage transformer body; 6. an extension base; 7. a heat radiation fan; 8. aluminum heat dissipation fins; 9. a copper pipe; 10. a telescopic rod; 11. a loop bar; 12. a connecting plate; 13. a tension spring; 14. the sleeve is made of copper.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a primary resonance eliminator of an electromagnetic voltage transformer comprises a primary resonance eliminator main body 1, a base 2 is fixedly connected to the bottom of the primary resonance eliminator main body 1, a connecting seat 4 is fixedly connected to the outer surface of one side of the base 2, an electromagnetic voltage transformer main body 5 is fixedly connected to the outer surface of the bottom of the base 2, a fixing bolt 3 is arranged between the connecting seat 4 and the electromagnetic voltage transformer main body 5, a connecting plate 12 is fixedly connected to the outer surface of one side of the base 2 and positioned on the top of the connecting seat 4, a loop bar 11 is fixedly connected to the outer wall of one side of the connecting plate 12, an expansion spring 13 is fixedly connected to the inner wall of one side of the loop bar 11, an expansion link 10 is fixedly connected to the end of one side of the expansion spring 13, a copper sleeve 14 is fixedly sleeved on the outer side of the primary resonance eliminator main body 1, a copper pipe 9, a heat radiation fan 7 is fixedly arranged on the outer surface of the top of the extension seat 6 corresponding to the position of the aluminum heat radiation fin 8.

The inner part of the connecting seat 4 is provided with a threaded connecting hole corresponding to the fixing bolt 3, the fixing bolt 3 is conveniently and fixedly connected with the electromagnetic voltage transformer main body 5 through the threaded connecting hole, a fixing screw is arranged between the connecting plate 12 and the base 2, the connecting plate 12 is fixedly connected with the base 2 through the fixing screw, the loop bar 11 is conveniently and fixedly connected with the base 2, a through hole is arranged in the inner part of one side of the loop bar 11 corresponding to the telescopic bar 10, the telescopic bar 10 is conveniently and fixedly connected with the telescopic spring 13 through the through hole, the telescopic spring 13 provides elasticity for the telescopic bar 10 to extend and retract, the outer surface of the peripheral side of the telescopic bar 10 is uniformly provided with a plurality of groups of anti-slip lines, a groove is arranged on the outer wall of one side of the fixing bolt 3 corresponding to the telescopic bar 10, the friction force between the telescopic bar, can prevent that fixing bolt 3 from taking place to rotate, avoid the pine to take off, the quantity of copper pipe 9 is two sets of, and is symmetrical about the central axis of copper sleeve 14 between two sets of copper pipes 9, and copper pipe 9 is convenient for transmit the heat on the copper sleeve 14.

The working principle is as follows: the utility model provides a harmonic elimination ware of electromagnetic type voltage transformer has great improvement innovation with traditional device, when using this electromagnetic type voltage transformer's harmonic elimination ware, at first press telescopic link 10, twist fixing bolt 3 into between connecting seat 4 and the electromagnetic type voltage transformer main part 5 and fix again, release telescopic link 10 and make telescopic link 10 just in time cooperate with the recess on fixing bolt 3, fix fixing bolt 3 and prevent its rotation pine, then start radiator fan 7 and dispel the heat to aluminium system radiator fin 8, because copper sleeve 14 cup joints the outside of harmonic elimination ware main part 1 once, and copper sleeve 14 has good thermal conductivity, again will once dispel the heat that harmonic ware main part 1 produced in the during operation and conduct to aluminium system radiator fin 8 through copper pipe 9 on, again through radiator fan 7 to aluminium system radiator fin 8 dispel the heat, the heat generated by the operation of the primary resonance eliminator main body 1 can be continuously dissipated, and the situation that the internal temperature is too high to cause explosion is prevented.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Electromagnetic type voltage transformer's harmonic elimination ware once, including harmonic elimination ware main part (1), its characterized in that: the primary resonance eliminator is characterized in that a base (2) is fixedly connected to the bottom of a primary resonance eliminator main body (1), a connecting seat (4) is fixedly connected to the outer surface of one side of the base (2), an electromagnetic voltage transformer main body (5) is fixedly connected to the outer surface of the bottom of the base (2), a fixing bolt (3) is arranged between the connecting seat (4) and the electromagnetic voltage transformer main body (5), a connecting plate (12) is fixedly connected to the outer surface of one side of the base (2) and is positioned at the top of the connecting seat (4), a loop bar (11) is fixedly connected to the outer wall of one side of the connecting plate (12), an expansion spring (13) is fixedly connected to the inner wall of one side of the loop bar (11), an expansion link (10) is fixedly connected to the tail end of one side of the expansion spring (13), a copper sleeve (14) is, copper pipe (9) one side end fixedly connected with aluminium system heat radiation fin (8), connecting seat (4) one side fixed surface is kept away from in base (2) is connected with and extends seat (6), it has radiator fan (7) to extend seat (6) top surface and aluminium system heat radiation fin (8) corresponding position fixed mounting.

2. The primary resonance eliminator of an electromagnetic voltage transformer according to claim 1, characterized in that: and a threaded connecting hole is formed in the connecting seat (4) at a position corresponding to the fixing bolt (3).

3. The primary resonance eliminator of an electromagnetic voltage transformer according to claim 1, characterized in that: and a fixing screw is arranged between the connecting plate (12) and the base (2), and the connecting plate (12) is fixedly connected with the base (2) through the fixing screw.

4. The primary resonance eliminator of an electromagnetic voltage transformer according to claim 1, characterized in that: the inner part of one side of the loop bar (11) is provided with a through hole corresponding to the telescopic bar (10).

5. The primary resonance eliminator of an electromagnetic voltage transformer according to claim 1, characterized in that: the outer surface of the periphery of the telescopic rod (10) is uniformly provided with a plurality of groups of anti-skidding lines, and the outer wall of one side of the fixing bolt (3) is provided with a groove at a position corresponding to the telescopic rod (10).

6. The primary resonance eliminator of an electromagnetic voltage transformer according to claim 1, characterized in that: the number of the copper pipes (9) is two, and the two groups of copper pipes (9) are symmetrical with respect to the central axis of the copper sleeve (14).