Fast saturation current transformer

Abstract

The utility model relates to the field of electrical components, in particular to a fast saturation current transformer. The fast saturation current transformer comprises a main iron core and an auxiliary iron core, the main iron core is annularly arranged, the auxiliary iron core is arranged on the inner side of the main iron core, and the two ends of the auxiliary iron core are connected with the main iron core; the auxiliary iron core is provided with a magnetic separation adjusting port. The structure form of the annular main magnetic circuit and the strip-shaped branch magnetic circuits is adopted, the magnetism-dividing adjusting openings can be formed in the auxiliary iron core, and the magnetism-dividing size of the branch magnetic circuits can be adjusted by adjusting the number of the magnetism-dividing adjusting openings.

Description

Technical Field

[0001] The present application relates to the field of electrical components, and in particular to a fast saturation current transformer. Background Art

[0002] The fast saturation current transformer is specially designed to maintain accurate signal transmission even when the core is saturated, thus avoiding false operation.

[0003] Common fast saturation current transformers include a main magnetic circuit, a sub-magnetic circuit, and a coil arranged on the main magnetic circuit. However, the current common current transformer has the problem that the magnetic separation of the sub-magnetic circuit is difficult to adjust, which results in the technical parameters of a single fast saturation current transformer being fixed and unique, and the application flexibility is poor. Utility Model Content

[0004] The present application provides a fast saturation current transformer, which has the advantage of easy adjustment of magnetic separation size.

[0005] The fast saturation current transformer provided in this application adopts the following technical solution:

[0006] A fast saturation current transformer comprises a main iron core and a secondary iron core, wherein the main iron core is arranged in a ring shape, the secondary iron core is arranged inside the main iron core, and both ends of the secondary iron core are connected to the main iron core;

[0007] The auxiliary iron core is provided with a magnetic separation adjustment port.

[0008] By adopting the above technical scheme, using an annular main magnetic circuit and a strip-shaped sub-magnetic circuit structure, a sub-magnetic adjustment port can be opened on the secondary iron core, and the amount of sub-magnetic adjustment ports can be adjusted to achieve adjustment of the sub-magnetic amount of the sub-magnetic circuit.

[0009] Preferably, the magnetic separation adjustment ports are provided in a plurality of groups, and the magnetic separation adjustment ports are arranged along the length direction of the secondary iron core; each group of the magnetic separation adjustment ports includes a plurality of circular holes distributed along the width direction of the secondary iron core.

[0010] By adopting the above technical solution, when producing the auxiliary iron core, the number of circular holes can be flexibly adjusted according to the technical parameter requirements of the current transformer, thereby changing the size of the magnetic distribution of the auxiliary iron core.

[0011] Preferably, the magnetic separation adjustment port is configured as a notch opened on the side wall of the secondary iron core.

[0012] By adopting the above technical solution, a notch can be opened at the edge of the auxiliary iron core, which can also achieve the purpose of adjusting the magnitude of the magnetic distribution of the auxiliary iron core.

[0013] Preferably, the magnetic separation adjustment port is configured as a long strip and is arranged along the length direction of the secondary iron core, and an adjustment block is arranged in the magnetic separation adjustment port.

[0014] By adopting the above technical solution, the number of adjustment blocks can be changed, thereby adjusting the size of the magnetic division adjustment port, thereby achieving the purpose of adjusting the size of the magnetic division amount of the secondary iron core.

[0015] Preferably, a lap joint end is provided at the end of the secondary iron core, the lap joint end is connected to the main iron core, and the secondary iron core is mounted on the main iron core through the lap joint end.

[0016] By adopting the above technical solution, the connection between the main iron core and the auxiliary iron core is arranged at the overlapping end, which can facilitate the installation of the auxiliary iron core and the main iron core and reduce the processing difficulty and processing cost.

[0017] Preferably, it also includes a connecting buckle, one end of which is connected to the overlapping end, and the other end is connected to the main iron core to achieve a fixed connection between the main iron core and the auxiliary iron core.

[0018] By adopting the above technical solution, the setting of the connecting buckle facilitates the installation and disassembly of the main iron core and the auxiliary iron core, so that the auxiliary iron core with different magnetic properties can be replaced, thereby adjusting the technical parameters of the current transformer.

[0019] Preferably, the connecting buckle is configured as a C-shaped retaining spring, one end of which is buckled on the lap end, and the other end is buckled on the main iron core to achieve a fixed connection between the lap end and the main iron core.

[0020] By adopting the above technical solution, the retaining spring can clamp the main iron core and the overlapping end, thereby realizing the connection between the main iron core and the auxiliary iron core.

[0021] Preferably, the secondary iron core is composed of a plurality of stacked silicon steel sheets.

[0022] By adopting the above technical solution, the thickness of the secondary iron core can be adjusted by changing the number of stacked silicon steel sheets, thereby adjusting the magnitude of the magnetic distribution of the secondary iron core.

[0023] Preferably, a gasket is provided between the main iron core and the auxiliary iron core.

[0024] By adopting the above technical solution, the magnetic intensity can be adjusted by changing the thickness of the gasket or the number of the gaskets.

[0025] Preferably, it further comprises a coil frame, wherein the coil frame is sleeved on the main iron core; and the cross section of the coil frame is set to be circular or square.

[0026] By adopting the above technical solution,

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. A fast saturation current transformer in the present application adopts a ring-shaped main magnetic circuit and a strip-shaped sub-magnetic circuit structure, and a sub-magnetic adjustment port can be opened on the secondary iron core. The amount of the sub-magnetic amount of the sub-magnetic circuit can be adjusted by adjusting the number of the sub-magnetic adjustment ports.

[0029] 2. The structure of the magnetic adjustment port is diversified and can be flexibly selected according to actual production needs, thereby meeting the production needs of diversified products and helping to reduce production costs;

[0030] 3. The main magnetic circuit uses oriented silicon steel sheets to be annularly wound into a closed annular magnetic circuit with high magnetic conductivity. When the primary current input is 0.2 times the rated current of the circuit breaker or a smaller current, the secondary output current can light up the color screen of the intelligent controller. The power supply is 0.2 times the rated current to meet the saturation charge of the capacitor, and the discharge energy can make the flux release quickly disconnect. The circuit breaker control circuit enters normal operation; when the primary current of the circuit breaker rises, the secondary output current will also rise, and the power increase will cause impact damage to the controller's electronic circuit, in order to protect the controller's electronic circuit. The fast saturation current transformer is specially designed. A novel system of strip-shaped laminated magnetic circuits. It is composed of a number of superimposed magnetic circuit laminates and a strip-shaped adjustment opening, which diverts the secondary large current and reduces the output current. Protect the safe operation of the electronic circuit;

[0031] 4. The present invention adopts the structure of annular main magnetic circuit and strip sub-magnetic circuit, which can be based on the requirements of the intelligent circuit breaker controller load for fast saturation current transformer. How many milliseconds to establish the controller voltage and capacitor saturation charging time. Increase and decrease the thickness of the sub-magnetic circuit lamination and the number of openings, and flexibly combine different design requirements, with the characteristics of fast response speed and rapid saturation; meet the requirements of the intelligent circuit breaker for self-powered energy coil, no noise, simple structure, and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a structural schematic diagram of a fast saturation current transformer in an embodiment of the present application;

[0033] Figure 2 Schematic diagram of the explosion structure of the fast saturation current transformer in the embodiment of the present application;

[0034] Figure 3 It is a schematic diagram of the structure of the auxiliary iron core in the embodiment of the present application;

[0035] Figure 4 It is a schematic diagram of the structure of the auxiliary iron core in the embodiment of the present application;

[0036] Figure 5 It is a schematic diagram of the structure of a cylindrical coil skeleton in an embodiment of the present application;

[0037] Figure 6 It is a schematic structural diagram of a square main iron core in an embodiment of the present application.

[0038] Markings in the attached figure: 1, main iron core; 2, auxiliary iron core; 21, overlapping end; 22, magnetic separation adjustment port; 23, adjustment block; 3, coil skeleton; 4, connecting buckle; 5, gasket. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-6 This application is described in further detail.

[0040] The present application embodiment discloses a fast saturation current transformer. Figure 1 and Figure 2 The fast saturation current transformer includes a main iron core 1 and a secondary iron core 2, both of which are made of laminated silicon steel sheets. The main iron core 1 is arranged in a D-shaped ring shape, and a coil frame 3 is arranged on the main iron core 1, and a conductive coil is wound on the coil frame 3. The secondary iron core 2 is arranged inside the main iron core 1, and both ends of the secondary iron core 2 are connected to the main iron core 1. The main iron core 1 constitutes a main magnetic circuit, and the secondary iron core 2 constitutes a sub-magnetic circuit.

[0041] Both ends of the secondary iron core 2 are provided with lap ends 21, which extend to one side of the main iron core 1 and abut against the side wall of the main iron core 1, and the secondary iron core 2 is mounted on the main iron core 1 through the lap ends 21. A connecting buckle 4 is provided on the lap end 21. In the embodiment of the present application, the connecting buckle 4 is configured as a C-shaped retaining spring, one end of the C-shaped retaining spring is buckled on the lap end 21, and the other end is buckled on the main iron core 1, so as to achieve a fixed connection between the lap end 21 and the main iron core 1, thereby fixing the secondary iron core 2 on the main iron core 1.

[0042] As a preferred implementation of the embodiment of the present application, the connecting buckle 4 can also be a plastic buckle, which can achieve a fixed connection between the lap end 21 and the auxiliary iron core 2.

[0043] A gasket 5 is provided between the main iron core 1 and the auxiliary iron core 2. The gasket 5 is made of metal such as copper sheet, and the main iron core 1 and the auxiliary iron core 2 are magnetically conductive through the gasket 5. By changing the number or thickness of the gasket 5, the magnetic separation size of the magnetic separation circuit can be adjusted.

[0044] A magnetic separation adjustment port 22 is provided on the auxiliary iron core 2 .

[0045] Reference Figure 2 In the embodiment of the present application, multiple groups of magnetic adjustment ports 22 are provided, and each group of magnetic adjustment ports 22 includes multiple circular holes distributed along the width direction of the secondary iron core 2. Multiple groups of magnetic adjustment ports 22 are arranged in parallel along the length direction of the secondary iron core 2. The magnetic separation size of the magnetic separation circuit can be adjusted by changing the number of circular holes in each group of magnetic adjustment ports 22 and adjusting the number of groups of magnetic adjustment ports 22.

[0046] Reference Figure 3 As one of the preferred embodiments of the present application, the magnetic separation adjustment port 22 is set as a gap opened on the side wall of the secondary iron core 2. By adjusting the number of gaps, the purpose of adjusting the magnetic separation size of the magnetic separation circuit can also be achieved.

[0047] Reference Figure 4 As the second preferred embodiment of the present application, the magnetic separation adjustment port 22 is arranged in a long strip shape and is arranged along the length direction of the secondary iron core 2, and an adjustment block 23 is arranged in the magnetic separation adjustment port 22. The length of the adjustment block 23 is less than the length of the magnetic separation adjustment port 22, and by arranging different numbers of adjustment blocks 23 in the magnetic separation adjustment port 22, the size of the magnetic separation adjustment port 22 is changed to achieve the purpose of adjusting the magnetic separation size of the magnetic separation circuit.

[0048] The adjusting block 23 and the secondary iron core 2 can be connected by welding, so that the adjusting block 23 is fixed on the secondary iron core 2 .

[0049] Reference Figure 5 In the embodiment of the present application, the cross section of the coil skeleton 3 is square, that is, the coil skeleton 3 is arranged in a square cylinder shape. Preferably, the cross section of the coil skeleton 3 can also be arranged in a circular shape, that is, the coil skeleton 3 is arranged in a cylindrical shape.

[0050] Reference Figure 6 In the embodiment of the present application, the main iron core 1 may be configured in a square shape in addition to being configured in a D-shape.

[0051] The implementation principle of the fast saturation current transformer in the embodiment of the present application is as follows: Method for adjusting the magnetic separation: 1. Add an adjustment hole in the middle of the secondary iron core 2. During production, the die punch can be adjusted to increase or decrease the number of magnetic separation adjustment holes 22, thereby adjusting the magnetic separation amount of the magnetic separation circuit. 2. Increase or decrease the number of laminations of silicon steel sheets in the secondary iron core 2 to adjust the magnetic separation size. 3. Change the thickness of the gasket 5 or the number of laminations to adjust the magnetic separation size.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fast saturation current transformer, characterized in that: It comprises a main iron core (1) and a secondary iron core (2), wherein the main iron core (1) is arranged in a ring shape, the secondary iron core (2) is arranged inside the main iron core (1), and both ends of the secondary iron core (2) are connected to the main iron core (1); The auxiliary iron core (2) is provided with a magnetic separation adjustment port (22).

2. The fast saturation current transformer according to claim 1, characterized in that: A plurality of groups of the magnetic separation adjustment openings (22) are provided, and the magnetic separation adjustment openings (22) are arranged along the length direction of the secondary iron core (2); each group of the magnetic separation adjustment openings (22) comprises a plurality of circular holes distributed along the width direction of the secondary iron core (2).

3. The fast saturation current transformer according to claim 1, characterized in that: The magnetic separation adjustment port (22) is configured as a notch opened on the side wall of the auxiliary iron core (2).

4. The fast saturation current transformer according to claim 1, characterized in that: The magnetic separation adjustment opening (22) is arranged in a long strip shape and is arranged along the length direction of the secondary iron core (2); an adjustment block (23) is arranged in the magnetic separation adjustment opening (22).

5. The fast saturation current transformer according to claim 1, characterized in that: The end of the secondary iron core (2) is provided with a lap end (21), the lap end (21) is connected to the main iron core (1), and the secondary iron core (2) is mounted on the main iron core (1) via the lap end (21).

6. The fast saturation current transformer according to claim 4, characterized in that: It also comprises a connecting buckle (4), one end of which is connected to the overlapping end (21), and the other end of which is connected to the main iron core (1) to achieve a fixed connection between the main iron core (1) and the auxiliary iron core (2).

7. The fast saturation current transformer according to claim 6, characterized in that: The connecting buckle (4) is configured as a C-shaped clip, one end of the C-shaped clip is buckled on the lap end (21), and the other end is buckled on the main iron core (1) to achieve a fixed connection between the lap end (21) and the main iron core (1).

8. The fast saturation current transformer according to claim 1, characterized in that: The auxiliary iron core (2) is composed of a plurality of stacked silicon steel sheets.

9. The fast saturation current transformer according to claim 1, characterized in that: A gasket (5) is provided between the main iron core (1) and the auxiliary iron core (2).

10. The fast saturation current transformer according to claim 1, characterized in that: It also comprises a coil frame (3), wherein the coil frame (3) is sleeved on the main iron core (1); the cross section of the coil frame (3) is arranged to be circular or square.

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