阅读说明：本技术 应用于交流汇流条式电磁接触器负载电流检测线圈 (Load current detection coil applied to alternating current bus bar type electromagnetic contactor ) 是由 由佳欣 王寒诺 李博 王吉 李卓燃 于 2021-02-08 设计创作，主要内容包括：本发明公开了一种应用于交流汇流条式电磁接触器负载电流检测线圈,所述检测线圈包括绝缘外壳、铁芯、次级绕线组线圈、信号输出排线组,其中：所述绝缘外壳的内部设有多组环绕输出端汇流条对称放置等间距的铁芯和次级绕线组线圈；所述次级绕线组线圈的两端装有非导磁绝缘垫片；所述绝缘外壳的上端设有矩形引出端接线口,信号输出排线组的一端与次级绕线组线圈相连,另一端经矩形引出端接线口与接触器控制部分相连。本发明的检测线圈结构简单,拆装简便,可直接固定于接触器上,并在接触器工作过程中保持工作状态。(The invention discloses a load current detection coil applied to an alternating current bus bar type electromagnetic contactor, which comprises an insulating shell, an iron core, a secondary winding coil and a signal output winding bank, wherein the signal output winding bank comprises: a plurality of groups of iron cores and secondary winding coils which are symmetrically arranged around the output end bus bar at equal intervals are arranged in the insulating shell; two ends of the secondary winding coil are provided with non-magnetic-conductive insulating gaskets; and a rectangular leading-out terminal wiring port is arranged at the upper end of the insulating shell, one end of the signal output winding bank is connected with the secondary winding bank coil, and the other end of the signal output winding bank is connected with the contactor control part through the rectangular leading-out terminal wiring port. The detection coil has simple structure and convenient assembly and disassembly, can be directly fixed on the contactor, and keeps a working state in the working process of the contactor.)

1. The utility model provides a be applied to alternating current busbar formula electromagnetic contactor load current detection coil which characterized in that the detection coil includes insulating casing, iron core, secondary winding group coil, signal output winding gang, wherein:

a plurality of groups of iron cores and secondary winding coils which are symmetrically arranged around the output end bus bar at equal intervals are arranged in the insulating shell;

two ends of the secondary winding coil are provided with non-magnetic-conductive insulating gaskets;

and a rectangular leading-out terminal wiring port is arranged at the upper end of the insulating shell, one end of the signal output winding bank is connected with the secondary winding bank coil, and the other end of the signal output winding bank is connected with the contactor control part through the rectangular leading-out terminal wiring port.

2. The load current detecting coil applied to the alternating current bus bar type electromagnetic contactor according to claim 1, wherein the iron core has a rectangular cross section with a circular arc and is integrally cast, and the material of the iron core is 1J 50.

3. The load current detecting coil applied to the ac busbar type electromagnetic contactor according to claim 1 or 2, wherein the cores are arranged at equal intervals on the same plane, and the center of each core is located at the center of the cross section of the corresponding bus bar.

4. The load current detecting coil for an ac busbar type electromagnetic contactor according to claim 1, wherein the secondary winding coil is a soft enameled wire made of pure copper.

5. The load current detecting coil for an ac bus bar type electromagnetic contactor according to claim 1, wherein the sectional area of the insulating case is rectangular, the length dimension thereof is equal to the length of the contactor bus bar side base, and a rectangular terminal port is provided in the middle of the insulating case so that the bus bar passes through the detecting coil.

6. The load current detection coil applied to the ac bus bar type electromagnetic contactor according to claim 1, wherein the contactor is a three-phase ac electromagnetic contactor having a bus bar structure.

7. An installation method of a load current detecting coil of an alternating current bus bar type electromagnetic contactor according to any one of claims 1 to 6, characterized in that the method comprises the steps of:

fixing the detection coil with a base of the electromagnetic contactor;

the detection coil is connected to the detection coil and the contactor control assembly part through a flat cable with a plug;

step three: and (5) confirming the fastening connection of the assembly, and completing the installation of the coil after detecting the on-off of the coil loop of the coil.

Technical Field

The invention belongs to the technical field of bus bar type contactors, relates to a load current detection coil applied to an alternating current bus bar type electromagnetic contactor, and particularly relates to a load current detection coil of a bus bar type three-phase alternating current contactor contact system.

Background

The bus bar type contactor is widely applied to the switching-on and switching-off functions of power control systems of aviation, aerospace and the like, is mainly used for realizing the switching-on and switching-off control of alternating current and direct current circuits, and has the advantages of large control capacity, convenience in bus installation, high point-action repulsion redundancy and the like. The product has strict requirements on the service life due to the action of main loop control, and the continuous rising of the arc current waveform in the on-off process is the embodiment of the service life loss, so the service life of the product can be predicted by detecting the current of the lead-out end of the busbar of the contactor. Under contactor actual operating condition, the electric current that just flows out female arranging and draws forth the end most embodies the arc current characteristic, and the interference is less, and is difficult for detecting the load current of contactor through external device from the angle of installation. In order to realize accurate detection of electric arcs and avoid the problems of external interference and inconvenient installation, a load coil of the contactor needs to be installed on a contactor body as much as possible, and signals can be output by a detection coil and transmitted to a contactor control circuit, so that integration operation, internal conditioning and upper computer transmission of the signals are realized.

Disclosure of Invention

The invention aims to provide a load current detection coil applied to an alternating current bus bar type electromagnetic contactor, which can be measured by the detection coil when the contactor is connected with load current.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a be applied to alternating current busbar formula electromagnetic contactor load current detection coil, includes insulating casing, iron core, secondary winding group coil, signal output winding gang, wherein:

a plurality of groups of iron cores and secondary winding coils which are symmetrically arranged around the output end bus bar at equal intervals are arranged in the insulating shell;

two ends of the secondary winding coil are provided with non-magnetic-conductive insulating gaskets;

and a rectangular leading-out terminal wiring port is arranged at the upper end of the insulating shell, one end of the signal output winding bank is connected with the secondary winding bank coil, and the other end of the signal output winding bank is connected with the contactor control part through the rectangular leading-out terminal wiring port.

The method for installing the load current detection coil of the alternating current bus bar type electromagnetic contactor comprises the following steps:

fixing the detection coil with a base of the electromagnetic contactor;

the detection coil is connected to the detection coil and the contactor control assembly part through a flat cable with a plug;

step three: and (5) confirming the fastening connection of the assembly, and completing the installation of the coil after detecting the on-off of the coil loop of the coil.

Compared with the prior art, the invention has the following advantages:

1. the detection coil can be directly fixed on the contactor and keeps a working state in the working process of the contactor;

2. the detection coil has simple structure and is easy and convenient to assemble and disassemble;

3. the detection coil is directly connected with the control part of the contactor through a flat cable.

Drawings

Fig. 1 is a perspective view of an ac bus bar type electromagnetic contactor of the same type;

fig. 2 is a perspective view of the detection coil;

fig. 3 is a schematic view showing the completion of the mounting of the detection coil and the contactor.

Detailed Description

The technical solution of the present invention is further described below with reference to the accompanying drawings, but not limited thereto, and any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention shall be covered by the protection scope of the present invention.

The invention provides a load current detection coil applied to an alternating current bus bar type electromagnetic contactor, as shown in figure 2, the detection coil comprises a secondary winding coil 1, an iron core 2, a signal output winding group 3, a countersunk screw 4 and an insulating shell 5, wherein: the detection coil internally comprises three groups of iron cores 2 and a secondary winding coil 1; the iron core 3 is a rectangular section with an arc and is integrally cast and molded, the material of the iron core is 1J50, the iron cores are arranged on the same plane at equal intervals, and the center of each annular iron core is located at the center of the section of the corresponding bus bar surrounded by the center of the annular iron core; non-magnetic-conductive insulating gaskets are arranged among the secondary winding group coils 1 to realize the insulation among bus bars and among coils; the secondary winding group coil 1 is a soft enameled wire and is made of pure copper; the whole detection coil is fixed on a contactor base through four countersunk head screws 4 in the transverse direction and the longitudinal direction to be stabilized on a contactor body, and the detection coil and a contactor are connected through a signal output row line group 3 to transmit an output signal to a contactor control part; the countersunk head screw 4 is a countersunk head steel screw to realize bidirectional fastening; the insulating shell 5 adopts a conformal design and is completely attached to the outer surface of the contactor; the sectional area of the insulating shell 5 is rectangular, the length of the insulating shell is equal to the length of the side base of the bus bar of the contactor, and a rectangular leading-out terminal wiring port is arranged in the middle of the insulating shell 5, so that the bus bar can pass through the detection coil.

The mounting mode of the load current detection coil of the alternating current bus bar type electromagnetic contactor comprises the following specific steps:

step one, will detect coil and electromagnetic contactor base fixed, through four group countersunk screw 4 in the outside of screwing, provide fastening force from two directions, guarantee that detection coil and contactor base are fixed, wherein: as shown in fig. 1, the contactor is a three-phase alternating current electromagnetic contactor with a bus bar structure, the contactor comprises a contact system, an electromagnetic system and a control system, and a base at the bottom of the contactor has enough space to be fixed with a detection coil;

secondly, detecting coil signals and connecting the coil signals with a contactor control part through a flat cable with a six-pin plug so as to realize the function of current transmission signals;

step three: and (3) confirming the fastening connection of the components, and completing the installation of the coil after detecting the on-off of the coil loop of the coil (figure 3).