CN210489407U

CN210489407U - Bus built-in zero sequence current transformer

Info

Publication number: CN210489407U
Application number: CN201921163611.2U
Authority: CN
Inventors: 孙海侠
Original assignee: Beijing Chuang Si Fang Electronic Ltd By Share Ltd
Current assignee: Beijing Chuang Si Fang Electronic Ltd By Share Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-05-08
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a bus built-in zero sequence current transformer, which comprises an upper shell and a lower shell, wherein an upper iron core is arranged in the upper shell, a lower iron core is arranged in the lower shell, the number of the upper iron core and the lower iron core is 2, a first secondary coil is wound on the outer side of the upper iron core, a second secondary coil is sleeved on the lower iron core, the number of windings of the second secondary coil is less than that of the first secondary coil, the lower end of the upper iron core penetrates through the lower side wall of the upper shell, the upper end of the lower iron core penetrates through the upper side wall of the lower shell, the area of the lower surface of the upper shell is equal to that of the upper surface of the lower shell, the current of the first secondary coil and the current of the second secondary coil can be measured through a first detection box and a second detection box, and the voltage of the bus can be more accurately detected after comparison, and when in use, the bus is convenient to install and convenient for a user to measure.

Description

Bus built-in zero sequence current transformer

Technical Field

The utility model relates to a mutual-inductor equipment technical field, concrete field is a built-in zero sequence current transformer of generating line.

Background

In a complex power supply system, a bus refers to a shared passage on which a plurality of devices are connected in a parallel branch form, so that the stability and the safety of the bus are very important, and the monitoring of the working state of the bus is indispensable in the power supply system.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a built-in zero sequence current transformer of generating line to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a bus built-in zero sequence current transformer comprises an upper shell and a lower shell, wherein an upper iron core is arranged inside the upper shell, a lower iron core is arranged inside the lower shell, the number of the upper iron core and the number of the lower iron core are both 2, a first secondary coil is wound on the outer side of the upper iron core, a second secondary coil is sleeved on the lower iron core, the number of windings of the second secondary coil is smaller than that of the first secondary coil, the lower end of the upper iron core penetrates through the lower side wall of the upper shell, the upper end of the lower iron core penetrates through the upper side wall of the lower shell, the area of the lower surface of the upper shell is equal to that of the upper surface of the lower shell, the position of the upper iron core corresponds to that of the lower iron core, and the first secondary coil and the second secondary coil can induce current flowing in a bus between the upper shell and the lower shell, thereby achieving the function of inducing the current of the bus to be detected, the number of the windings of the first secondary coil is larger than that of the windings of the second secondary coil, so that the utility model can form data contrast when in use, thereby enabling a user to verify whether the utility model works normally by a way of amplifying the proportion, the utility model can keep the upper iron core and the lower iron core in good contact when in work by ensuring the position correspondence of the upper iron core and the lower iron core, thereby preventing the occurrence of the condition of electric leakage, and the structure of the upper and lower symmetry can make the utility model simpler and more convenient when in manufacture, thereby facilitating the batch processing of the utility model, the upper shell and the lower shell are connected through the articulated elements, the outer side wall of the upper shell is provided with a first positioning block, the outer side wall of the lower shell is provided with a second positioning block, and the first positioning block and the second positioning block are connected with a, the utility model discloses can open the utility model under the effect of articulated elements when using, can fix upper portion shell and lower part shell through the threaded fixing pole, the inside packing of upper portion shell and lower part shell has insulating cement, the surface mounting of upper portion shell has first detection case, the lower surface mounting of lower part shell has the second detection case, the contact of first secondary coil stretches into in the first detection case, the contact of second secondary coil stretches into in the second detection case, all be equipped with electronic type ampere meter in first detection case and the second detection case symmetrically, electronic type ampere meter is connected with first secondary coil and second secondary coil electricity through the contact, all be equipped with the bus duct on the lower part shell's the lower wall and the upper wall of lower part shell, the symmetry is equipped with the bearing piece on the lateral wall of lower part shell, there is upper portion through bolted connection on the bearing piece, the current magnitude of the first secondary coil and the second secondary coil can be measured through the first detection box and the second detection box, so that the bus voltage is reflected.

Preferably, the threaded fixing rod is made of an insulating material.

Preferably, the upper iron core and the lower iron core are formed by rolling silicon steel sheets and performing heat treatment and impregnation.

Preferably, a lifting handle is arranged on the upper surface of the upper shell.

Preferably, the carrier sheet and the upper fixing sheet are made of an insulating material.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a built-in zero sequence current transformer of generating line, can measure the electric current size of first secondary coil and second secondary coil through first detection case and second detection case, the voltage of detection generating line that can be more accurate after the comparison, and generating line simple to operate during the use, convenient to use person measures.

Drawings

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

FIG. 2 is a schematic side view and cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic front view of the structure of the present invention;

fig. 4 is an internal structure diagram of the first detection box of the present invention.

In the figure: 1-upper shell, 2-lower shell, 3-upper iron core, 4-lower iron core, 5-first secondary coil, 6-second secondary coil, 7-first locating block, 8-second locating block, 9-threaded fixing rod, 10-first detection box, 11-second detection box, 12-electronic ammeter, 13-bearing sheet and 14-upper fixing sheet.

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 built-in zero sequence current transformer of generating line, includes upper portion shell 1 and lower part shell 2, the inside of upper portion shell 1 is equipped with upper portion iron core 3, the inside of lower part shell 2 is equipped with lower part iron core 4, the quantity of upper portion iron core 3 and lower part iron core 4 is 2, the outside of upper portion iron core 3 is twined and is had first secondary coil 5, second secondary coil 6 has been cup jointed on the iron core 4 of lower part, the winding quantity of second secondary coil 6 is less than the winding quantity of first secondary coil 5, the lower extreme of upper portion iron core 3 runs through the lower lateral wall of upper portion shell 1, the upper end of lower part iron core 4 runs through the upper wall of lower part shell 2, the lower surface of upper portion shell 1 equals with the upper surface area of lower part shell 2, the position of upper portion iron core 3 corresponds with the position of lower part iron core 4, first secondary coil 5 and second secondary coil 6 can respond to the current that flows in the generating line of upper portion shell 1 and lower Thereby achieving the function of sensing the current of the bus to be detected, the number of windings of the first secondary coil 5 is larger than that of the second secondary coil 6 to make the utility model form data contrast when in use, thereby making the user verify whether the utility model works normally by means of proportional amplification, the utility model can keep the upper iron core 3 and the lower iron core 4 in good contact when in operation by ensuring the position correspondence of the upper iron core 3 and the lower iron core 4, thereby preventing the occurrence of electric leakage, the upper shell 1 and the lower shell 2 are connected through the articulated elements, the outer side wall of the upper shell 1 is provided with a first positioning block 7, the outer side wall of the lower shell 2 is provided with a second positioning block 8, the first positioning block 7 and the second positioning block 8 are connected with a thread fixing rod 9 by screw threads, the inner parts of the upper shell 1 and the lower shell 2 are filled with insulating glue, the upper surface of the upper shell 1 is provided with a first detection box 10, the lower surface of the lower shell 2 is provided with a second detection box 11, a contact of the first secondary coil 5 extends into the first detection box 10, a contact of the second secondary coil 6 extends into the second detection box 11, electronic ammeters 12 are symmetrically arranged in the first detection box 10 and the second detection box 11, the electronic ammeters 12 are electrically connected with the first secondary coil 5 and the second secondary coil 6 through contacts, bus ducts are arranged on the lower side wall of the upper shell 1 and the upper side wall of the lower shell 2, bearing sheets 13 are symmetrically arranged on the outer side wall of the lower shell 2, upper fixing sheets 14 are connected onto the bearing sheets 13 through bolts, and can be opened under the action of an articulated element when in use, the utility model can fix the upper shell 1 and the lower shell 2 through a thread fixing rod 9, the current levels of the first secondary coil 5 and the second secondary coil 6 can be measured by the first detection box 10 and the second detection box 11, thereby reflecting the bus voltage.

In particular, the threaded fixing rod 9 is made of an insulating material.

Specifically, the upper iron core 3 and the lower iron core 4 are each formed by rolling a silicon steel sheet and performing heat treatment and impregnation.

Specifically, a lifting handle is provided on the upper surface of the upper housing 1.

Specifically, the carrier sheet 13 and the upper fixing sheet 14 are both made of an insulating material.

The working principle is as follows: in the utility model, the first secondary coil 5 and the second secondary coil 6 can induce the current flowing in the bus bar between the upper shell 1 and the lower shell 2, thereby achieving the function of inducing the current of the bus bar to be detected, the number of windings of the first secondary coil 5 is larger than that of the second secondary coil 6, so that the utility model can form data contrast when in use, thereby enabling the user to verify whether the utility model works normally by a proportional amplification mode, the utility model can keep the upper iron core 3 and the lower iron core 4 in good contact when in work by ensuring the position correspondence of the upper iron core 3 and the lower iron core 4, thereby preventing the occurrence of electric leakage condition, and the structure of upper and lower symmetry can make the utility model more simple and convenient when in manufacture, is convenient for batch processing of the utility model, and can be opened under the action of the articulated element when in use, the upper casing 1 and the lower casing 2 can be fixed by the threaded fixing rod 9, and the current magnitude of the first secondary coil 5 and the second secondary coil 6 can be measured by the first detection box 10 and the second detection box 11, so as to reflect the bus voltage.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

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 built-in zero sequence current transformer of generating line, includes upper portion shell (1) and lower part shell (2), its characterized in that: the transformer comprises an upper shell (1), an upper iron core (3) is arranged in the upper shell (1), a lower iron core (4) is arranged in the lower shell (2), the number of the upper iron core (3) and the lower iron core (4) is 2, a first secondary coil (5) is wound on the outer side of the upper iron core (3), a second secondary coil (6) is sleeved on the lower iron core (4), the number of windings of the second secondary coil (6) is smaller than that of the first secondary coil (5), the lower end of the upper iron core (3) penetrates through the lower side wall of the upper shell (1), the upper end of the lower iron core (4) penetrates through the upper side wall of the lower shell (2), the lower surface of the upper shell (1) is equal to the upper surface area of the lower shell (2), and the position of the upper iron core (3) corresponds to the position of the lower iron core (4), the detection device is characterized in that the upper shell (1) and the lower shell (2) are connected through an articulated piece, a first positioning block (7) is arranged on the outer side wall of the upper shell (1), a second positioning block (8) is arranged on the outer side wall of the lower shell (2), a thread fixing rod (9) is connected to the first positioning block (7) and the second positioning block (8) in a threaded mode, insulating glue is filled in the upper shell (1) and the lower shell (2), a first detection box (10) is arranged on the upper surface of the upper shell (1), a second detection box (11) is arranged on the lower surface of the lower shell (2), a contact of a first secondary coil (5) stretches into the first detection box (10), a contact of a second secondary coil (6) stretches into the second detection box (11), electronic type ammeters (12) are symmetrically arranged in the first detection box (10) and the second detection box (11), electronic type ampere meter (12) are connected through contact and first secondary (5) and second secondary (6) electricity, all be equipped with the bus duct on the lower lateral wall of upper portion shell (1) and the last lateral wall of lower part shell (2), the symmetry is equipped with bearing piece (13) on the lateral wall of lower part shell (2), there is upper portion stationary blade (14) through bolted connection on bearing piece (13).

2. The bus built-in zero sequence current transformer according to claim 1, characterized in that: the threaded fixing rod (9) is made of an insulating material.

3. The bus built-in zero sequence current transformer according to claim 1, characterized in that: the upper iron core (3) and the lower iron core (4) are formed by rolling silicon steel sheets and performing heat treatment and impregnation.

4. The bus built-in zero sequence current transformer according to claim 1, characterized in that: the upper surface of the upper shell (1) is provided with a lifting handle.

5. The bus built-in zero sequence current transformer according to claim 1, characterized in that: the bearing sheet (13) and the upper fixing sheet (14) are both made of insulating materials.