Non-contact plug-in type magnetic core multifunctional sensor

Abstract

The utility model discloses a non-contact plug-in type magnetic core multifunctional sensor, which belongs to the technical field of sensors, and comprises two upper shells and a first rotating shaft, the two upper shells are rotatably connected through the first rotating shaft, the inner walls of the two upper shells are fixedly connected with leakage current plug-in type magnetic cores, and the leakage current plug-in type magnetic cores are fixedly connected with the first rotating shaft. The lower surfaces of the two upper shells are fixedly connected with two lower shells respectively, the two lower shells are rotationally connected through a first rotating shaft, PCBA board groups are arranged on the inner walls of the two lower shells, and by arranging the first rotating shaft, the upper shells and the lower shells can rotate through the first rotating shaft conveniently; by arranging the clamping blocks and the clamping plates, the upper shell and the lower shell can be fixed conveniently, installation without wire breakage and power failure during installation is achieved, and installation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, and more specifically to a non-contact plug-in type magnetic core multifunctional sensor. Background Art

[0002] The transient process of the power grid is an important representation of the operating status of the power grid. At present, the overvoltage protection and data monitoring of the primary line of the power grid are highly valued. With the promotion and construction of intelligent and digital substations, the grid-connected operation of various new energy sources, the electromagnetic environment of the secondary system has become more and more complex. The following problems are common in the power grid: 1. Grounding hazards are difficult to find: The reliability of equipment grounding is an important measure to ensure the operation of equipment and personal safety. Grounding is a hidden project. Because there are many points and wide areas, it is difficult to find hidden problems such as rust, looseness, breakage, and missing connection of the grounding wire of the power equipment during actual operation. Aging of equipment insulation leads to The hidden danger of increased leakage cannot be detected in time, there is no monitoring method for multi-point grounding of the AC system, and there are safety hazards for equipment and personnel; there is no monitoring method for the impact of transient potential rise of the primary ground network on the secondary. 2. There is no data support for overvoltage accident analysis: Microelectronic equipment in the power system is easily affected by transient overvoltage and transient current, which can easily cause malfunction, shortened equipment life, data packet loss and other abnormal situations. At present, the construction of overvoltage protection projects in the secondary power system relies entirely on experience, there is no evaluation method for overvoltage protection effect, transient data cannot be reproduced, fault analysis lacks data support, and similar accidents occur repeatedly and cannot be cured.

[0003] However, existing sensing devices have the following problems during use: the data collected is single, and only the parameters of transient overvoltage, transient overcurrent or electrical leakage current are collected, and the fault analysis data support is insufficient; the device is large in size and high in cost, and the voltage sensor is contact-type and samples directly on the line, so there is a risk of short circuit in the collection circuit, which poses certain safety hazards. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a non-contact plug-in magnetic core multifunctional sensor, which has the characteristics of small size, easy installation, and multi-data non-contact synchronous collection of lightning current, overvoltage, and power frequency leakage current.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides a non-contact plug-in magnetic core multifunctional sensor, including an upper shell and a first rotating shaft, there are two upper shells in total, the two upper shells are rotatably connected by the first rotating shaft, the inner walls of the two upper shells are fixedly connected with a leakage current plug-in magnetic core, the lower surfaces of the two upper shells are respectively fixedly connected with two lower shells, the two lower shells are rotatably connected by the first rotating shaft, the inner walls of the two lower shells are respectively provided with a PCBA board group, the lower surface of one of the lower shells is fixedly connected with a data cable, the lower end of the data cable is fixedly connected with a plug, the upper surface of the upper shell and the lower surface of the lower shell are respectively fixedly connected with a clamping assembly, the clamping assembly includes a fixing plate, two telescopic rods, a clamping plate, a second rotating shaft, a threaded column and a rotating handle, one of the upper shells and the lower shell surface are respectively fixedly connected with a card block, the other upper shell and the lower shell surface are respectively fixedly connected with a card plate, and the card plate cooperates with the card block.

[0008] When a non-contact plug-in magnetic core multifunctional sensor of the present technical solution is used, a first rotating shaft is provided so that the upper shell and the lower shell can be rotated through the first rotating shaft, thereby driving the leakage current plug-in magnetic core and the PCBA board assembly to be clamped on the cable surface. By providing a clamping block and a clamping plate, the upper shell and the lower shell can be fixed, thereby achieving installation without disconnection or power outage during installation, and the installation is convenient and quick.

[0009] Furthermore, the fixed plate is fixedly connected to the upper surface of the upper shell body, the two telescopic rods are both inserted through the surface of the fixed plate, the clamping plate is fixedly connected to one end of the two telescopic rods, the second rotating shaft is rotatably connected to the surface of the clamping plate through a bearing, the threaded column is fixedly connected to the other end of the second rotating shaft, the threaded column is threadedly connected to the surface of the fixed plate, and the rotating handle is fixedly connected to the other end of the threaded column.

[0010] Furthermore, the surfaces of the two PCBA board groups are both provided with Rogowski coils, the two Rogowski coils are equal in size and have opposite winding directions, and the surface of the PCBA board group is provided with a current sensor, a transient current sensor and a transient voltage sensor.

[0011] Furthermore, the leakage current plug-in type magnetic core adopts a plug-in type structure, and the leakage current plug-in type magnetic core adopts Permalloy material.

[0012] Furthermore, a shielding cover is fixedly connected to the upper surface of the upper shell and the lower surface of the lower shell respectively.

[0013] Furthermore, rubber pads are respectively fixedly connected to the surfaces of the plurality of clamping plates.

[0014] (3) Beneficial effects

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The non-contact plug-in magnetic core multifunctional sensor is convenient for the upper shell and the lower shell to rotate through the first rotating shaft by setting the first rotating shaft, so as to facilitate the leakage current plug-in magnetic core and the PCBA board group to be clamped on the cable surface, and the upper shell and the lower shell are conveniently fixed by setting the clamping block and the clamping board, so as to achieve the installation without disconnection and power outage during installation, and the installation is convenient and quick;

[0017] 2. This non-contact plug-in magnetic core multifunctional sensor sets a clamping component so that the threaded column drives the clamping plate to clamp the cable, thereby facilitating adaptation to cables of different diameters. By setting a leakage current plug-in magnetic core and a PCBA board assembly, leakage current, lightning and overvoltage signal collection is achieved, and the three signals will not interfere with each other during transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the front view of the expanded structure of the utility model;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at A in the middle.

[0022] The symbols in the accompanying drawings are:

[0023] 1. Upper shell; 2. First rotating shaft; 3. Leakage current plug-in magnetic core; 4. Lower shell; 5. PCBA board assembly; 6. Data cable; 7. Plug; 8. Clamping assembly; 801. Fixed plate; 802. Telescopic rod; 803. Clamping plate; 804. Second rotating shaft; 805. Threaded column; 806. Rotating handle; 9. Block; 10. Card plate; 11. Shielding cover; 12. Rubber pad. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0025] Example:

[0026] The following is combined with Figure 1-3 The utility model is described in further detail.

[0027] See also Figure 1-3 The utility model provides a technical solution: a non-contact plug-in magnetic core multifunctional sensor, including an upper shell 1 and a first rotating shaft 2, there are two upper shells 1, the two upper shells 1 are rotatably connected through the first rotating shaft 2, the inner walls of the two upper shells 1 are fixedly connected with a leakage current plug-in magnetic core 3, the lower surfaces of the two upper shells 1 are respectively fixedly connected with two lower shells 4, the two lower shells 4 are rotatably connected through the first rotating shaft 2, the inner walls of the two lower shells 4 are provided with a PCBA board group 5, the lower surface of one of the lower shells 4 is fixedly connected with a data line 6, the lower end of the data line 6 is fixedly connected with a plug 7, the upper surface of the upper shell 1 and the lower surface of the lower shell 4 are respectively fixedly connected with a clamping assembly 8, and the clamping assembly 8 includes A fixing plate 801, two telescopic rods 802, a clamping plate 803, a second rotating shaft 804, a threaded column 805 and a rotating handle 806, wherein one of the upper shell 1 and the lower shell 4 surfaces is fixedly connected with a clamping block 9, and the other upper shell 1 and the lower shell 4 surfaces are fixedly connected with a clamping plate 10, and the clamping plate 10 cooperates with the clamping block 9. By setting the first rotating shaft 2, it is convenient to rotate the upper shell 1 and the lower shell 4 through the first rotating shaft 2, so as to facilitate the leakage current to clamp the plug-in magnetic core 3 and the PCBA board group 5 on the cable surface. By setting the clamping block 9 and the clamping plate 10, it is convenient to fix the upper shell 1 and the lower shell 4, so as to achieve installation without disconnection and power outage during installation, and the installation is convenient and quick.

[0028] Specifically, the fixed plate 801 is fixedly connected to the upper surface of the upper shell body 1, the two telescopic rods 802 are both inserted into the surface of the fixed plate 801, the clamping plate 803 is fixedly connected to one end of the two telescopic rods 802, the second rotating shaft 804 is rotatably connected to the surface of the clamping plate 803 through a bearing, the threaded column 805 is fixedly connected to the other end of the second rotating shaft 804, the threaded column 805 is threadedly connected to the surface of the fixed plate 801, and the handle 806 is fixedly connected to the other end of the threaded column 805.

[0029] By adopting the above technical solution, the handle 806 is rotated to drive the threaded column 805 and the second shaft 804 to rotate, and under the action of the telescopic rod 802, the clamping plate 803 is driven to clamp the cable, so as to adapt to cables of different diameters.

[0030] Specifically, the surfaces of the two PCBA board groups 5 are both provided with Rogowski coils, the two Rogowski coils are equal in size and have opposite winding directions, the surface of the PCBA board group 5 is provided with a current sensor, a transient current sensor and a transient voltage sensor, the leakage current plug-in magnetic core 3 adopts a plug-in structure, and the leakage current plug-in magnetic core 3 is made of Permalloy.

[0031] By adopting the above technical solution and adopting a plug-in structure for the leakage current plug-in magnetic core 3, the linearity performance of the magnetic permeability is stabilized.

[0032] Specifically, shielding covers 11 are fixedly connected to the upper surface of the upper shell 1 and the lower surface of the lower shell 4 , respectively, and rubber pads 12 are fixedly connected to the surfaces of the plurality of clamping plates 803 .

[0033] By adopting the above technical solution and providing the shielding cover 11, it is convenient to shield and protect the clamping assembly 8 and improve the aesthetics at the same time.

[0034] The working principle of the utility model is as follows: when in use, the upper shell 1 and the lower shell 4 are placed on the surface of the cable, and are rotated by the first rotating shaft 2. Under the action of the clamping block 9 and the clamping plate 10, the upper shell 1 and the lower shell 4 are fixed. When the diameter of the cable is small, the threaded column 805 and the second rotating shaft 804 are driven to rotate by rotating the handle 806. Under the action of the telescopic rod 802, the clamping plate 803 is driven to clamp the cable, and cables of different diameters are clamped and fixed. The plug 7 is plugged into the surface of the device. Under the action of the leakage current on the plug-in magnetic core 3 and the PCBA board group 5, the signal collection of leakage, lightning and overvoltage is realized.

[0035] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A non-contact plug-in magnetic core multifunctional sensor, comprising an upper housing (1) and a first rotating shaft (2), characterized in that: There are two upper shells (1) in total, and the two upper shells (1) are rotatably connected via a first rotating shaft (2). The inner walls of the two upper shells (1) are fixedly connected with a leakage current plug-in magnetic core (3). The lower surfaces of the two upper shells (1) are respectively fixedly connected with two lower shells (4). The two lower shells (4) are rotatably connected via the first rotating shaft (2). The inner walls of the two lower shells (4) are provided with a PCBA board group (5). A data cable (6) is fixedly connected to the lower surface of one of the lower shells (4), and a plug is fixedly connected to the lower end of the data cable (6). (7), the upper surface of the upper shell (1) and the lower surface of the lower shell (4) are respectively fixedly connected with a clamping assembly (8), and the clamping assembly (8) comprises a fixing plate (801), two telescopic rods (802), a clamping plate (803), a second rotating shaft (804), a threaded column (805) and a rotating handle (806), one of the surfaces of the upper shell (1) and the lower shell (4) is respectively fixedly connected with a clamping block (9), and the other surface of the upper shell (1) and the lower shell (4) is respectively fixedly connected with a clamping plate (10), and the clamping plate (10) cooperates with the clamping block (9).

2. The non-contact plug-in magnetic core multifunctional sensor according to claim 1, characterized in that: The fixing plate (801) is fixedly connected to the upper surface of the upper shell (1); the two telescopic rods (802) are both inserted through the surface of the fixing plate (801); the clamping plate (803) is fixedly connected to one end of the two telescopic rods (802); the second rotating shaft (804) is rotatably connected to the surface of the clamping plate (803) via a bearing; the threaded column (805) is fixedly connected to the other end of the second rotating shaft (804); the threaded column (805) is threadedly connected to the surface of the fixing plate (801); and the rotating handle (806) is fixedly connected to the other end of the threaded column (805).

3. The non-contact plug-in magnetic core multifunctional sensor according to claim 1, characterized in that: The surfaces of the two PCBA board groups (5) are both provided with Rogowski coils, the two Rogowski coils are equal in size and have opposite winding directions, and the surfaces of the PCBA board groups (5) are provided with a current sensor, a transient current sensor and a transient voltage sensor.

4. The non-contact plug-in magnetic core multifunctional sensor according to claim 1, characterized in that: The leakage current plug-in type magnetic core (3) adopts a plug-in type structure, and the leakage current plug-in type magnetic core (3) adopts a Permalloy material.

5. The non-contact plug-in magnetic core multifunctional sensor according to claim 1, characterized in that: The upper surface of the upper shell (1) and the lower surface of the lower shell (4) are respectively fixedly connected with a shielding cover (11).

6. The non-contact plug-in magnetic core multifunctional sensor according to claim 1, characterized in that: Rubber pads (12) are respectively fixedly connected to the surfaces of the plurality of clamping plates (803).

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