Shell structure for current sensor of high-precision electric energy meter
A technology of current sensor and shell structure, applied in the field of electric energy meters, can solve the problems of large size, large space, occupation, etc., and achieve the effect of saving space, facilitating production, and increasing sealing.
Pending Publication Date: 2022-05-13
宁波泰丰源电气有限公司
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Problems solved by technology
Since most of the current DC current sensors are mostly square in shape and large in size, it will cause great inconvenience when applied to a DC electric energy meter with a relatively compact shape
In addition, when measuring large currents, most sensors use the bus bar as the current carrier. On the one hand, this installation method will cause great inconvenience to the sensor design and optimization.
On the other hand, since the installation method of the feedthrough on the busbar will occupy a large space, this directly affects the measurement of the DC current sensor and the DC energy meter.
Method used
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Embodiment Construction
[0031] Such as Figure 1 to Figure 6 As shown, the present invention includes an upper cover 1 and a bottom case 2 . The overall shape is round up and down, with a wire hole in the center; refer to figure 1 , except for the debugging port 14 and the interface hole 3, the entire shell is in a sealed state after assembly, and the upper cover 1 and the bottom shell 2 form a hollow shell structure. The cross-sectional view of the upper cover 1 is U-shaped, and the upper cover is provided with an interface hole 3, and the interface hole 3 is rectangular, which is the power supply and output terminal lead-out position reserved for the sensor. There are upper cover fixing holes right 6 and upper cover fixing holes left 12 on both sides of the upper cover. The upper cover fixing holes right 6 and upper cover fixing holes left 12 are designed as countersunk head structures, so that the screw head does not move when the screw is fixed. protruding, the upper part of the interface hole ...
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A shell structure for a current sensor of a high-precision electric energy meter comprises an upper cover and a base and is characterized in that the cross section of the upper cover is in a closed U shape, an interface hole is formed in the upper cover, a right upper cover fixing hole and a left upper cover fixing hole are formed in the two sides of the interface hole, a first buckle right and a second buckle right are arranged on the side face of the upper cover, and the first buckle right and the second buckle right are arranged on the base. A debugging opening is formed in the bottom of the upper cover, the debugging opening is in an open rectangular shape, an upper cover step fracture is formed in the debugging opening, the upper cover step fracture is in a concave-convex step shape, the upper cover step fracture and the debugging opening are of an integrated structure, the inner wall of the upper cover wire hole is in an outwards-convex arc shape, and the inner wall of the upper cover wire hole is in a concave-convex arc shape. The U-shaped cover is arranged in the middle of the U-shaped upper cover. According to the invention, the base and the upper cover are combined through the concave-convex structure, leakage of the base through a seam between the base and the upper cover when the base is filled with an electronic sealant is prevented, and a very strong shielding effect is achieved through the realization of a plurality of technical characteristics.
Description
[0001] The invention belongs to the technical field of electric energy meters, and in particular relates to a shell structure for a current sensor of a high-precision electric energy meter. Background technique [0002] The DC current sensor has high measurement accuracy and high reliability, so it is widely used in the field of DC current measurement. Since most of the current DC current sensors are mostly square in shape and large in size, it will cause great inconvenience when applied to a DC electric energy meter with a relatively compact shape. In addition, when measuring large currents, most sensors use the bus bar as the current carrier. On the one hand, this installation method will cause great inconvenience to the sensor design and optimization. On the other hand, since the installation method of the feedthrough on the busbar will occupy a large space, this directly affects the measurement of the DC current sensor and the DC energy meter. Therefore, it is necessary t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G01R19/00G01R1/04
CPCG01R19/0092G01R1/04
Inventor 王应栋潘琳斌章孟翼叶峰
Owner 宁波泰丰源电气有限公司