Self-calibration digital leakage current sensor

Abstract

The utility model discloses a self-calibration digital leakage current sensor which comprises a base, a sensor lower casing is rotatably arranged on the upper side of the base, a quarter-circle detection opening is formed in the upper portion of the sensor lower casing, and an upper casing is transversely and slidably arranged in the detection opening through a transverse supporting frame. A transverse support frame is arranged in the upper end of the sensor lower casing, the transverse support frame is in threaded connection with a screw rod on one side of the upper end of the sensor lower casing, and one end of the screw rod is in rotary connection with one side of the upper end of the sensor lower casing through a bearing. The upper casing is transversely and slidably arranged in the detection opening through the transverse support frame, and the transverse support frame is in threaded connection with the screw rod on one side of the upper end of the sensor lower casing; the transverse support frame and the upper casing can be transversely moved and adjusted by rotating the screw rod, so that the detection opening can open a lead for penetrating detection, and then the upper casing is moved by reversely rotating the screw rod to close the detection opening, so that the detection opening is convenient and rapid to open and close, and leakage current detection processing is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a leakage current sensor technical field, concretely is a kind of self-calibration digital leakage current sensor. BACKGROUND

[0002] Leakage current sensor is a kind of device that is converted into linear proportional DC current, DC voltage standard analog signal or RS485 digital signal according to electromagnetic isolation, magnetic modulation working principle of mutual inductor measured AC micro-current, DC isolation.The application occasion of DC leakage current sensor is in national safety use standard, and there is certain hard requirement for the use standard of all electrical equipment, is widely used in DC power transmission, storage detection, DC screen, power supply, large-scale medical and health equipment, photovoltaic, wind power generation, communication base station and other industries and equipment, leakage of equipment is fed back in first time, and rear-end leakage protection element will take relevant measures in first time, avoid accident, safe use, production operation.

[0003] Prior art application number 202223244744.7 a leakage current sensor, including bottom support seat and extension adjustment installation component, the left and right ends of bottom support seat are connected with fixed mounting plate, and the lower end of fixed mounting plate is connected with sliding support limiting block, extension adjustment installation component is set to the lower end left and right sides of bottom support seat, and extension adjustment installation component includes rotating shaft, slotted mounting plate and bolt hole, the lower end of rotating shaft is connected with slotted mounting plate.The sensor can improve the installation mode of equipment by the cooperation between fixed mounting plate, sliding support limiting block and extension adjustment installation component, improve the installation applicability of equipment, the convenient connection between connecting plate and sliding fixed component, the work efficiency of detection is increased, protection assembly is conveniently fixed to wiring assembly, protection dustproof is carried out when not being used, avoid affecting equipment service life, but, detection opening opening and closing operation is inconvenient, thereby affecting the efficiency of leakage current detection. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of self-calibration digital leakage current sensor, to solve the problem of the efficiency of leakage current detection in prior art detection opening opening and closing operation is inconvenient.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A kind of self-calibration digital leakage current sensor, including base, the lower shell of sensor is rotatably arranged on the upper side of base, the upper part of the lower shell of sensor is equipped with the detection opening of quarter circle, the upper shell is slidably arranged in the detection opening by horizontal support frame, the screw rod is threadedly connected with the one side of the upper end of the lower shell of sensor of horizontal support frame, the one end of the screw rod is rotatably connected with the one side of the upper end of the lower shell of sensor by bearing, the lower shell of sensor and the upper shell are equipped with two magnetic rings which can be disassembled, the one side of the bottom of the lower shell of sensor is also equipped with terminal, switch and display screen.

[0006] Further, the upper support plate is rotatably arranged in the inside of the upper side of base by connecting shaft, and the lower shell of sensor is fixedly arranged on the upper support plate.

[0007] Further, the base is provided with a plurality of positioning plates on the outside, and the positioning plates are provided with positioning holes in the inside.

[0008] Further, the horizontal support frame comprises two horizontal support rods, and the one end of the two horizontal support rods is vertically provided with a longitudinal support plate, and the longitudinal support plate is threadedly connected with the screw rod through a threaded hole in the middle part.

[0009] Further, the one side of the upper end of the lower shell of sensor is provided with a limiting sliding hole, and the horizontal support frame is slidably arranged with the limiting sliding hole.

[0010] Further, the magnetic ring comprises a fixed magnetic ring arranged in the lower shell of sensor, the upper shell is provided with a movable magnetic ring in the inside, and the movable magnetic ring and the fixed magnetic ring are horizontally clamped through a clamping groove and a clamping block.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、the upper shell is slidably arranged in the detection opening by horizontal support frame, the screw rod is threadedly connected with the one side of the upper end of the lower shell of sensor, so that the horizontal support frame and the upper shell can be adjusted by rotating the screw rod, so that the detection opening can be opened to pass through the detection wire, then the upper shell is moved by reversing the screw rod to close the detection opening, so that the detection opening is opened and closed conveniently and quickly, and the leakage current detection process is facilitated.

[0013] 2、the lower shell of sensor and the upper shell are provided with two magnetic rings which can be disassembled, the magnetic ring comprises a fixed magnetic ring arranged in the lower shell of sensor, the upper shell is provided with a movable magnetic ring in the inside, and the movable magnetic ring and the fixed magnetic ring are horizontally clamped through a clamping groove and a clamping block, the clamping groove and the clamping block are metal conductive structures, so that the magnetic ring gap can be separated and placed for detecting the wire.

[0014] 3. The utility model discloses a bottom side rotates and is equipped with sensor lower machine shell, and the inside of bottom side rotates and is equipped with upper support board through connecting shaft, and sensor lower machine shell is fixedly arranged on the upper support board, make sensor lower machine shell can be adjusted horizontally relative to the horizontal rotation of base, can adjust the horizontal use angle of sensor after fixed position, and the adjustment is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and are used to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the detection opening opening structure schematic diagram of the utility model;

[0018] Figure 3 It is the magnetic ring structure schematic diagram of the utility model;

[0019] Figure 4 It is the base structure bottom view of the utility model.

[0020] In the drawing: 1, base; 2, sensor lower machine shell; 3, upper machine shell; 4, detection opening; 5, clamping block; 6, upper support board; 7, transverse support rod; 8, longitudinal support plate; 9, screw rod; 10, bearing; 11, positioning plate; 12, positioning hole; 13, limit sliding hole; 14, connecting shaft; 15, fixed magnetic ring; 16, movable magnetic ring; 17, clamping groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4The utility model discloses an embodiment of a kind of self-calibration digital leakage current sensor, including base 1, sensor lower casing 2 is rotatably arranged on the upper side of base 1, and the upper side inside of base 1 is rotatably provided with upper support plate 6 by connecting shaft 14, and sensor lower casing 2 is fixedly arranged on upper support plate 6, so that sensor lower casing 2 can be horizontally rotated and adjusted relative to base 1, so that the horizontal use angle of sensor after adjusting fixed position can be adjusted, it is convenient and fast to adjust, and sensor lower casing 2 bottom side is also provided with wiring port, switch and display screen, convenient for control and data display, sensor lower casing 2 upper portion is provided with the detection opening 4 of quarter circle, and upper casing 3 is slidably arranged in detection opening 4 by transverse support frame, the screw rod 9 of transverse support frame and the upper end one side of sensor lower casing 2 is threadedly connected, the one end of screw rod 9 is rotatably connected with the upper end one side of sensor lower casing 2 by bearing 10, the upper end one side of sensor lower casing 2 is provided with limit sliding hole 13, and transverse support frame and limit sliding hole 13 are slidably arranged, and transverse support frame includes the two transverse support rods 7 that are provided, and the one end of two transverse support rods 7 is vertically provided with longitudinal support plate 8, and longitudinal support plate 8 is threadedly connected with screw rod 9 by screw hole in the middle, so that the transverse movement of transverse support frame and upper casing 3 can be adjusted by rotating screw rod 9, to control the opening and closing of detection opening 4, to facilitate leakage current detection processing.

[0023] As Figure 1 And Figure 3 As shown, in order to facilitate the gap separation of magnetic ring, sensor lower casing 2 and upper casing 3 are provided with two detachable magnetic rings, the magnetic ring includes a fixed magnetic ring 15 arranged in the sensor lower casing 2, two groups of coils are symmetrically arranged in the fixed magnetic ring 15, the movable magnetic ring 16 is arranged in the upper casing 3, and the movable magnetic ring 16 and the fixed magnetic ring 15 are horizontally connected by the clamping groove 17 and the clamping block 5, the clamping groove 17 and the clamping block 5 are metal conductive structures, which facilitates the gap separation of the magnetic ring for placing detection wire.

[0024] As Figure 1 And Figure 4 As shown, in order to install and fix the base 1, a plurality of positioning plates 11 are arranged on the outer side of the base 1, and the positioning holes 12 are arranged in the positioning plates 11, so that the base 1 can be installed and fixed in multiple positions, and the stability of installation and fixation is high.

[0025] The working principle and usage process of the utility model are as follows: when in use, the wire to be detected is passed through the detection through hole on the upper part of the lower casing 2 of the sensor. Since the upper casing 3 is provided in the detection opening 4 through the horizontal sliding of the horizontal support frame, the horizontal support frame is threadedly connected to the screw 9 on one side of the upper end of the lower casing 2 of the sensor, so that the horizontal support frame and the upper casing 3 can be adjusted to move horizontally by rotating the screw 9, so that the detection opening 4 can be opened to pass the wire for detection, and then the screw 9 is rotated in the opposite direction to move the upper casing 3 to close the detection opening 4, so that the detection opening 4 is convenient and quick to open and close, which is convenient for leakage current detection processing.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A self-calibrating digital leakage current sensor, comprising a base (1), characterized in that: A sensor lower housing (2) is rotatably provided on the upper side of the base (1), a quarter-circle detection opening (4) is provided on the upper part of the sensor lower housing (2), an upper housing (3) is provided in the detection opening (4) through a transverse support frame that slides transversely, the transverse support frame is threadedly connected to a screw (9) on one side of the upper end of the sensor lower housing (2), two detachable magnetic rings are provided in the sensor lower housing (2) and the upper housing (3), and a wiring port, a switch and a display screen are also provided on one side of the bottom of the sensor lower housing (2).

2. The self-calibrating digital leakage current sensor according to claim 1, wherein: An upper support plate (6) is rotatably provided inside the upper side of the base (1) via a connecting shaft (14), and the sensor lower housing (2) is fixedly arranged on the upper support plate (6).

3. The self-calibrating digital leakage current sensor according to claim 2, wherein: A plurality of positioning plates (11) are provided on the outside of the base (1), and positioning holes (12) are provided inside the positioning plates (11).

4. The self-calibrating digital leakage current sensor according to claim 1, wherein: The transverse support frame comprises two transverse support rods (7), and a longitudinal support plate (8) is vertically provided at one end of the two transverse support rods (7), and the middle portion of the longitudinal support plate (8) is threadedly connected to the screw rod (9) through a threaded hole.

5. The self-calibrating digital leakage current sensor according to claim 1, wherein: A limiting sliding hole (13) is provided on one side of the upper end of the sensor lower housing (2), and the transverse support frame and the limiting sliding hole (13) are slidably arranged.

6. The self-calibrating digital leakage current sensor according to claim 1, characterized in that: The magnetic ring comprises a fixed magnetic ring (15) arranged in the lower housing (2) of the sensor, a movable magnetic ring (16) is arranged inside the upper housing (3), and the movable magnetic ring (16) and the fixed magnetic ring (15) are horizontally clamped via a clamping groove (17) and a clamping block (5).

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