Guide rail type electric energy meter Rogowski coil automatic testing device

Abstract

The invention relates to the technical field of instrument detection, in particular to an automatic testing device for a Rogowski coil of a guide rail type electric energy meter. Comprising a box body, a partition plate installed on the box body, an internal support arranged on the rear side of the partition plate, an up-down moving mechanism, a front-back moving mechanism and a first rotating mechanism arranged on the front-back moving mechanism, the up-down moving mechanism and the front-back moving mechanism are installed on the internal support, the internal support is arranged in the box body, and a coil installation base is installed at the end of the first rotating mechanism; rogowski coils are mounted on the coil mounting seats. According to the automatic test device for the Rogowski coil of the guide rail type electric energy meter, the up-down moving mechanism, the front-back moving mechanism, the first rotating mechanism and the second rotating mechanism are independently arranged, so that the detection convenience is improved, the application range is widened, and the automatic test device is relatively convenient to use; therefore, the circular radians and inclination angles of all the hollow coils are consistent, and the detection accuracy is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of instrument detection, in particular to a guide rail type electric energy meter Rogowski coil automatic testing device. BACKGROUND

[0002] The guide rail type electric energy meter usually uses a Rogowski coil as a current sensor, which is a flexible and non-magnetic saturation current measurement technology suitable for alternating current energy metering. The working principle of the Rogowski coil is electromagnetic induction principle: the Rogowski coil is a hollow annular coil that measures current based on Faraday's law of electromagnetic induction. When the measured conductor passes through the center of the coil, the changing current (alternating current) in the conductor will induce a voltage signal proportional to the current change rate at both ends of the coil; integral processing: the induced voltage needs to be converted into a signal proportional to the original current through an integral circuit or a digital integral algorithm, so as to restore the actual current waveform.

[0003] The existing Rogowski coil is usually detected manually. After detecting a position according to the detection specification, the measured product is manually rotated to another required point, and then power detection is performed. The main reason for the current detection method is that there are many test points for the Rogowski coil, and the position of the measured product or the position of the applied current lead needs to be changed at each test point. It is difficult to change the position of the lead, so the operator often needs to stop the power after completing each test point, and then manually adjust the position of the Rogowski coil for continuous testing. The detection method is inefficient, labor-intensive, and the accuracy of the test point position cannot be guaranteed.

[0004] The Rogowski coil detection device disclosed in application No. 202410227340.1 can automatically detect multiple points and has good fixing effect on the Rogowski coil, but still has the following defects: the structure is complex, the production cost is high, and only single action can be performed each time, so it is difficult to simultaneously actuate multiple adjustment structures, the detection efficiency is low, and it is difficult to detect all positions inside multiple Rogowski coils.

[0005] In addition, the existing detection device generally detects only a single Rogowski coil, while three Rogowski coils are arranged inside a three-phase electric energy meter and connected to three-phase power. A single Rogowski coil cannot be directly connected to a three-phase electric energy meter for use, and an additional detector is needed for separate detection. Moreover, the existing Rogowski coil detection has different inclination angles of the hollow coil and inconsistent roundness of the coil on different Rogowski coils, which affects the accuracy of the detection results when multiple Rogowski coils are detected simultaneously. SUMMARY

[0006] (1) Technical problems solved In view of the deficiencies of the prior art, the present application provides a guide rail type electric energy meter Roebel coil automatic testing device, which has the advantages of simple structure, low production cost, simultaneous multiple actions, improved detection efficiency and accuracy, suitability for use with various electric energy meters, and the effect of correcting and adjusting the air core coil on the Roebel coil during detection.

[0007] (II) Technical solutions To achieve the above object, the present application provides the following technical solutions: a guide rail type electric energy meter Roebel coil automatic testing device, comprising a box body, a partition plate mounted on the box body, an internal support arranged at the rear side of the partition plate, an up-down moving mechanism and a front-rear moving mechanism mounted on the internal support, and a first rotating mechanism arranged on the front-rear moving mechanism, the internal support being arranged inside the box body, a coil mounting seat being mounted on the end of the first rotating mechanism, and a Roebel coil being mounted on the coil mounting seat. The up-down moving mechanism comprises a first electric telescopic rod mounted on the internal support, a sliding frame arranged on the first electric telescopic rod, and a conductive rod mounted on the sliding frame, a side sliding rail being arranged on the internal support and arranged vertically, and the sliding frame being slidingly arranged on the side sliding rail. The partition plate is provided with a through hole and a through slot, the first rotating mechanism penetrates through the through hole, the coil mounting seat is arranged outside the partition plate, the conductive rod penetrates through the through slot, and the maximum telescopic amount of the first electric telescopic rod does not exceed the length of the through slot.

[0008] Preferably, the front-rear moving mechanism comprises a second electric telescopic rod mounted on the internal support, a fixed plate connected to the end of the second electric telescopic rod, and a surface sliding rail, the surface sliding rail being mounted on the internal support, a second sliding frame being mounted on the back surface of the fixed plate, and the second sliding frame sliding on the surface sliding rail.

[0009] Preferably, the fixed plate is arranged at the rear side of the partition plate, and the first rotating mechanism is mounted on the fixed plate, the first rotating mechanism comprising a transmission motor, a transmission sprocket set, an eccentric rotating rod, a moving rod, a fixed mounting rod, a deflection plate, a fixed rod, and an end rotating seat.

[0010] Preferably, the transmission motor is mounted on the back surface of the fixed plate, and the output end is in transmission connection with the transmission sprocket set, the transmission sprocket sets are in transmission connection through chains, the transmission sprocket sets are arranged on the front surface of the fixed plate, the surface of the driven sprocket of the transmission sprocket set is in transmission connection with the eccentric rotating rod, and the eccentric rotating rod and the driven sprocket are eccentrically arranged.

[0011] Preferably, the moving rods are uniformly distributed with multiple groups on the surface of the eccentric rotating rod, each group of moving rods is provided with two moving rods, and the moving rods are arranged in parallel, only the moving rod at the top in each group of moving rods is rotationally connected with the eccentric rotating rod, each group of moving rods is connected through a plurality of deflection plates, the deflection plates are rotationally connected with the moving rods, the deflection plates are symmetrically distributed on the moving rods to form two groups, the tail end of the fixed mounting rod is mounted on the fixed plate, the front end of the fixed mounting rod is inserted into the center of the deflection plate at the middle position of each group of deflection plates, the fixed rod is arranged at the center of the deflection plates at the two side positions of each group of deflection plates, the end head rotating seat is mounted on the front end of the fixed rod, the end head rotating seat is arranged in an L shape, and the coil mounting seat is mounted on the end head rotating seat.

[0012] Preferably, the inside of the coil mounting seat is provided with a mounting groove, the Rogowski coil is composed of a lower wire seat and a hollow coil mounted on the wire seat, the wire seat of the Rogowski coil is inserted into the inside of the mounting groove, an inner wall sliding groove is formed in the inner wall of the mounting groove, an abutting spring is arranged in the inside of the inner wall sliding groove, a top block is mounted at the front end of the abutting spring, the end surface of the top block is arranged in an arc shape, and the end surface of the top block abuts against the outer wall of the wire seat of the Rogowski coil.

[0013] Preferably, the outer wall of the wire seat of the Rogowski coil is provided with a coil adjusting mechanism, the coil adjusting mechanism is composed of two groups of hinge seats mounted on the top of the outer wall of the wire seat, two groups of arc-shaped retaining frames rotationally connected with the two groups of hinge seats, elastic abutting protrusions arranged in the inside of the two groups of arc-shaped retaining frames, and a top socket and a plugboard connecting the two groups of arc-shaped retaining frames, the inner wall of the arc-shaped retaining frame is arranged in an arc shape and is matched with the hollow coil of the Rogowski coil.

[0014] Preferably, the top socket is mounted at the top of the two groups of arc-shaped retaining frames, respectively, the plugboard is inserted into the inside of the two top sockets, the hollow coil of the Rogowski coil is clamped in the inside of the arc-shaped retaining frame, and the elastic abutting protrusion abuts against the outer wall of the hollow coil of the Rogowski coil.

[0015] Preferably, a bottom insertion hole is formed in the bottom of the coil mounting seat, a side insertion hole is formed in the outer wall of the coil mounting seat, the side insertion hole is vertically arranged with the bottom insertion hole, and the side insertion hole is in communication with the bottom insertion hole, an internal coil spring is mounted on the inner top wall of the bottom insertion hole.

[0016] Preferably, a fixed insertion rod is inserted into the inside of the bottom insertion hole, the bottom of the fixed insertion rod is mounted on the end head rotating seat, a coil spring insertion slot is formed in the top of the fixed insertion rod, the end portion of the internal coil spring is inserted into the inside of the coil spring insertion slot, a plurality of limiting through holes are formed in the fixed insertion rod, the limiting through holes are arranged at the same height and penetrate the axis of the fixed insertion rod, the limiting through holes are matched with the side insertion hole, a socket is inserted into the side insertion hole, and the end portion of the socket penetrates the side insertion hole and is inserted into the inside of the limiting through hole.

[0017] (Three) beneficial effects Compared with the prior art, the present application provides a guide rail type electric energy meter Roebel coil automatic testing device, which has the following beneficial effects: 1. The guide rail type electric energy meter Roebel coil automatic testing device, by adopting the up-down moving mechanism, the front-rear moving mechanism, and the first rotating mechanism and the second rotating mechanism being separately provided, when multiple point detection is performed on the Roebel coil, the up-down, front-rear, lateral deflection and longitudinal deflection of the Roebel coil can be simultaneously adjusted at multiple angles, improving the convenience of detection, and the above-mentioned mechanism structure is simple and uniformly distributed, reducing the production cost.

[0018] 2. The guide rail type electric energy meter Roebel coil automatic testing device, by adopting the setting of directly setting three groups of conductive rods to connect three-phase electricity, it can be applicable to the detection of Roebel coils on single-phase electric energy meters and three-phase electric energy meters, so that the device can detect Roebel coils on different types of electric energy meters, improving the application range and being more convenient to use.

[0019] 3. The guide rail type electric energy meter Roebel coil automatic testing device, by the setting of the coil adjusting mechanism, the hollow coil on the Roebel coil can be fixed and limited, so that the circular arc and the inclination angle of all hollow coils are consistent, and when multiple Roebel coils are detected, the accuracy of detection is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a three-dimensional structure schematic diagram of the present application; Figure 2 is a schematic diagram of the internal support structure inside the box body of the present application; Figure 3 is a schematic diagram of the partial structure inside the box body of the present application; Figure 4 is a schematic diagram of the transmission structure of the first rotating mechanism of the present application; Figure 5 is a schematic diagram of the connection structure of the coil mounting seat and the Roebel coil of the present application; Figure 6 is a schematic diagram of the structure of the second rotating mechanism of the present application; Figure 7 is a schematic diagram of the sectional structure of the coil mounting seat of the present application; Figure 8 is a schematic diagram of the structure of the coil adjusting mechanism of the present application; Figure 9 is a schematic diagram of the structure of the fixed insertion rod of the present application; Figure 10 is a schematic diagram of the side sectional structure of the present application Figure 5 ; Figure 11 is a schematic diagram of the connection structure of the fixed insertion rod and the coil mounting seat of the present application; Figure 12 For the present application Figure 10 The enlarged structural schematic view of A part in the present application.

[0021] In the figure: 1, box body; 2, internal support; 3, first electric telescopic rod; 4, first sliding frame; 5, side sliding rail; 6, conductive rod; 7, second electric telescopic rod; 8, surface sliding rail; 9, fixed plate; 10, transmission motor; 11, transmission sprocket set; 12, eccentric rotating rod; 13, rotating plate; 14, fixed mounting rod; 15, deflection plate; 16, fixed rod; 17, end rotating seat; 18, coil mounting seat; 19, Rogowski coil; 20, mounting groove; 21, inner wall sliding groove; 22, abutting spring; 23, top block; 24, hinge seat; 25, arc-shaped retainer; 26, elastic abutting protrusion; 27, top socket; 28, plug plate; 29, bottom jack; 30, side jack; 31, fixed plug rod; 32, coil spring insertion groove; 33, internal coil spring; 34, limiting through hole; 35, socket; 36, partition plate. DETAILED DESCRIPTION

[0022] 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, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0023] An embodiment of the present application, please refer to Figures 1 to 4 A guide rail type electric energy meter Rogowski coil automatic testing device, comprising a box body 1, a partition plate 36 mounted on the box body 1, an internal support 2 arranged at the rear side of the partition plate 36, an up-down moving mechanism and a front-rear moving mechanism mounted on the internal support 2, and a first rotating mechanism arranged on the front-rear moving mechanism, the internal support 2 is arranged in the interior of the box body 1, a coil mounting seat 18 is mounted on the end of the first rotating mechanism, and a Rogowski coil 19 is mounted on the coil mounting seat 18.

[0024] The up-down moving mechanism is composed of a first electric telescopic rod 3 mounted on the internal support 2, a sliding frame 4 arranged on the first electric telescopic rod 3, and a conductive rod 6 mounted on the sliding frame 4, a side sliding rail 5 is arranged on the internal support 2, the side sliding rail 5 is arranged vertically, the sliding frame 4 is arranged slidingly on the side sliding rail 5, three groups of conductive rods 6 are mounted on the sliding frame 4, the distances between the three groups of conductive rods 6 are the same, the three groups of conductive rods 6 are connected to different lines of three-phase electricity, and three Rogowski coils 19 can be simultaneously detected by three-phase detection, which can be applicable to three-phase electric energy meters.

[0025] The spacer plate 36 is provided with a through hole and a through slot, the first rotating mechanism penetrates the through hole, the coil mounting seat 18 is arranged on the outer side of the spacer plate 36, the conductive rod 6 penetrates the through slot, and the maximum extension amount of the first electric telescopic rod 3 does not exceed the length of the through slot.

[0026] Specifically, when the Rogowski coil 19 is installed, it is directly inserted into the coil mounting seat 18, then the wire on the Rogowski coil 19 is wound around the conductive rod 6, and then the end is inserted into the wire terminal of the Rogowski coil 19, so that the wire on the Rogowski coil 19 forms a hollow coil. Then we set a point every 90 degrees in the hollow coil from the top in the counterclockwise direction, and name them point 1, 2, 3 and 4 respectively. The 1 and 3 points are upper and lower points, and the 2 and 4 points are front and rear points. The conductive rod 6 is inside the hollow coil. In addition, the three Rogowski coils 19 at the same vertical position can be connected together to form a three-phase coil. Then the three Rogowski coils 19 are connected to the mutual inductor detector, which can be used for detecting the Rogowski coil 19 on the actual use three-phase electric energy meter, and improving the detection accuracy. When the Rogowski coil 19 is detected, multiple positions inside the Rogowski coil 19 need to be measured. When the upper and lower points inside the Rogowski coil 19 are measured, the first electric telescopic rod 3 is started to drive the first sliding frame 4 to move up and down on the side sliding rail 5, so that the three groups of conductive rods 6 installed on the first sliding frame 4 also move up and down, and then the three groups of conductive rods 6 and the three groups of Rogowski coils 19 are displaced in the up and down direction, so that the conductive rod 6 is not in the center of the Rogowski coil 19, and the mutual inductance detection of the 1 and 3 points on the Rogowski coil 19 can be performed.

[0027] The front and rear moving mechanism is composed of the second electric telescopic rod 7 installed on the inner support 2, the fixed plate 9 connected with the end of the second electric telescopic rod 7, and the surface sliding rail 8. The surface sliding rail 8 is installed on the inner support 2, and the second sliding frame is installed on the back of the fixed plate 9. The second sliding frame slides on the surface sliding rail 8.

[0028] Specifically, when the front and rear points are detected, the second electric telescopic rod 7 is started to drive the second sliding frame to slide on the surface sliding rail 8, so that the coil mounting seat 18 drives the Rogowski coil 19 to move forward and backward, so that the distance between the 2 and 4 points on the Rogowski coil 19 and the conductive rod 6 changes, and the conductive rod 6 can be moved to the 2 or 4 points on the Rogowski coil 19. The mutual inductance detection of the current intensity of the front and rear 2 and 4 points can be performed. In addition, since the up and down moving mechanism and the front and rear moving mechanism are two sets of mechanisms that do not interfere with each other, they can also move simultaneously, so that all positions on one circle inside the Rogowski coil 19 can be detected, which is convenient and efficient.

[0029] The fixed plate 9 is arranged at the rear side of the partition plate 36, and the first rotating mechanism is installed on the fixed plate 9, which is composed of a transmission motor 10, a transmission sprocket set 11, an eccentric rotating rod 12, a moving rod 13, a fixed mounting rod 14, a deflection plate 15, a fixed rod 16 and an end rotating seat 17.

[0030] The transmission motor 10 is installed on the back of the fixed plate 9, and the output end is in transmission connection with the transmission sprocket set 11, the transmission sprocket set 11 is in transmission connection through a chain, the transmission sprocket set 11 is arranged on the front of the fixed plate 9, the surface of the driven sprocket of the transmission sprocket set 11 is in rotating connection with the eccentric rotating rod 12, and the eccentric rotating rod 12 is eccentrically arranged with the driven sprocket.

[0031] The moving rod 13 is uniformly distributed with multiple groups on the surface of the eccentric rotating rod 12, each group of the moving rod 13 is arranged in parallel, only the moving rod 13 at the top in each group of the moving rod 13 is in rotating connection with the eccentric rotating rod 12, and each group of the moving rod 13 is connected through a plurality of deflection plates 15, the deflection plate 15 is in rotating connection with the moving rod 13, the deflection plate 15 is symmetrically distributed into two groups on the moving rod 13, the tail end of the fixed mounting rod 14 is installed on the fixed plate 9, the front end of the fixed mounting rod 14 is inserted into the center of the deflection plate 15 at the middle position in each group of the deflection plate 15, the fixed rod 16 is arranged at the center of the deflection plate 15 at the two side positions in each group of the deflection plate 15, the end rotating seat 17 is installed at the front end of the fixed rod 16, the end rotating seat 17 is arranged in an L shape, and the coil mounting seat 18 is installed on the end rotating seat 17.

[0032] Specifically, when the 3, 4 points need to be detected, the transmission motor 10 needs to be started, the transmission motor 10 drives the transmission sprocket set 11 to drive the driven sprocket to drive the eccentric rotating rod 12 to rotate, the eccentric rotating rod 12 is deflected, and through the multi-stage linkage action of the moving rod 13, the fixed mounting rod 14, the deflection plate 15 and the fixed rod 16, the two moving rods 13 on one group are reversely moved, the deflection plate 15 is deflected, the fixed rod 16 is driven to rotate, the end rotating seat 17 at the end of the fixed rod 16 drives the coil mounting seat 18 to rotate in the horizontal direction, the distance between the 3, 4 points and the conductive rod 6 is changed, and the mutual inductance detection of the 3, 4 points on the Rogowski coil 19 can be performed.

[0033] In summary, the overall structure of the above structure adopts a multi-link way plus an electric sliding rail structure, is symmetrically distributed, the overall structure is relatively simple and ingenious, is uniformly and reasonably distributed, each adjusting assembly can be independently moved, there is no mutual interference, the production cost is not high, the operation difficulty is relatively low, in addition, the arrangement of the three conductive rods 6 and the three groups of coil mounting seats 18 enables the device to detect a single Rogowski coil 19, and also can detect a group of three-phase Rogowski coils 19, realizes the effect of detecting different electric energy meter Rogowski coils, has a wide application range, and the operation is relatively simple and convenient.

[0034] As an embodiment of the present application, refer to Figures 5 to 7 and Figures 9 to 12 The inside of the coil mounting seat 18 is provided with a mounting groove 20, the Rogowski coil 19 is composed of a wiring seat located below and a hollow coil mounted on the wiring seat, the wiring seat of the Rogowski coil 19 is inserted into the inside of the mounting groove 20, an inner wall sliding groove 21 is formed on the inner wall of the mounting groove 20, an abutting spring 22 is arranged in the inside of the inner wall sliding groove 21, a top block 23 is mounted at the front end of the abutting spring 22, the end face of the top block 23 is arc-shaped, and the end face of the top block 23 abuts against the outer wall of the wiring seat of the Rogowski coil 19.

[0035] Specifically, when installing the Rogowski coil 19, first, the bottom of the Rogowski coil 19 is inserted into the inside of the mounting groove 20 on the coil mounting seat 18, then the wiring seat of the Rogowski coil 19 abuts against the top block 23, and under the action of the abutting spring 22, the top block 23 is pressed against the wiring seat of the Rogowski coil 19, preventing the Rogowski coil 19 from being separated from the coil mounting seat 18 when the coil mounting seat 18 moves or rotates.

[0036] A bottom insertion hole 29 is formed at the bottom of the coil mounting seat 18, a side insertion hole 30 is formed on the outer wall of the coil mounting seat 18, the side insertion hole 30 is vertically arranged with the bottom insertion hole 29, and the side insertion hole 30 is in communication with the bottom insertion hole 29, and an internal coil spring 33 is mounted on the inner top wall of the bottom insertion hole 29.

[0037] A fixed insertion rod 31 is inserted into the inside of the bottom insertion hole 29, the bottom of the fixed insertion rod 31 is mounted on the end rotating seat 17, a coil spring insertion groove 32 is formed at the top of the fixed insertion rod 31, the end of the internal coil spring 33 is inserted into the inside of the coil spring insertion groove 32, a plurality of limiting through holes 34 are formed on the fixed insertion rod 31, are located at the same height, and all penetrate the axis of the fixed insertion rod 31, the limiting through holes 34 are arranged in matching with the side insertion hole 30, a socket 35 is inserted into the side insertion hole 30, and the end of the socket 35 penetrates the side insertion hole 30 and is inserted into the inside of the limiting through hole 34.

[0038] Specifically, when the 1, 2 point positions need to be detected, the Rogowski coil 19 needs to be rotated in the vertical direction, at this time, by pulling out the socket 35 from the side hole 30 on the side of the coil mounting seat 18, the coil mounting seat 18 and the fixed insertion rod 31 can be rotated, then rotating the fixed insertion rod 31, so that the other set of limiting through holes 34 on the fixed insertion rod 31 are on the same axis as the side hole 30, at this time the Rogowski coil 19 rotates, and through the conductive rod 6, the 1, 2 point positions on the Rogowski coil 19 can be mutual inductance detection; in addition, by using the cooperation of the coil spring slot 32 and the internal coil spring 33, after detection is completed, the coil mounting seat 18 can be automatically restored to the original position quickly and accurately, improving the convenience of use.

[0039] In summary, when installing the Rogowski coil 19 and adjusting the Rogowski coil 19 in the vertical direction, the operation steps of the coil mounting seat 18 are simple and convenient, and the adjustment angles of all Rogowski coils 19 are consistent, improving the accuracy of detection.

[0040] As an embodiment of the present application, please refer to Figure 5 and Figure 9 The coil adjusting mechanism is provided on the outer wall of the terminal block of the Rogowski coil 19, and the coil adjusting mechanism is composed of two sets of hinge seats 24 installed on the top of the outer wall of the terminal block, two sets of arc-shaped retaining frames 25 respectively connected with the two sets of hinge seats 24, elastic abutting blocks 26 provided inside the two sets of arc-shaped retaining frames 25, and top sockets 27 and plugboards 28 connected with the two sets of arc-shaped retaining frames 25. The inner wall of the arc-shaped retaining frame 25 is arc-shaped and matched with the hollow coil of the Rogowski coil 19. The top socket 27 is respectively installed on the top of the two sets of arc-shaped retaining frames 25, and the plugboard 28 is inserted into the inside of the two top sockets 27. The hollow coil of the Rogowski coil 19 is clamped in the inside of the arc-shaped retaining frame 25, and the elastic abutting block 26 is matched with the outer wall of the hollow coil of the Rogowski coil 19.

[0041] Specifically, the roundness or inclination of the Rogowski coil can affect the detection result, the reason for the roundness effect is that if the roundness of the coil is insufficient (such as an ellipse or local deformation), the mutual inductance of each turn of the coil will be inconsistent, especially when measuring high-frequency current, which may introduce amplitude or phase errors; in addition, the reason for the inclination effect is that when the measured conductor is not perpendicular to the plane of the coil, the effective turn chain area (i.e. magnetic flux) of the coil will be reduced, resulting in a decrease in the output signal amplitude. The error is usually proportional to the cosine of the inclination angle, so when detecting, the air core coil on the Rogowski coil 19 needs to be adjusted to ensure its roundness and inclination; the two arc-shaped retainers 25 can be fixed through the top socket 27 and the plug plate 28, so that the inner wall of the arc-shaped retainer 25 is a smooth circular arc, at this time the air core coil on the Rogowski coil 19 can be pressed into the inside of the arc-shaped retainer 25, and the elastic abutting block 26 abuts against the outer wall of the air core coil, so that the air core coil remains round and does not tilt, so that all the air core coils on the Rogowski coil 19 are consistent in shape, thereby improving the accuracy of detection.

[0042] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0043] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic testing device for Rogowski coils of a rail-mounted energy meter, comprising a housing (1), a partition (36) mounted on the housing (1), an internal support (2) disposed on the rear side of the partition (36), a vertical moving mechanism and a horizontal moving mechanism mounted on the internal support (2), and a first rotating mechanism disposed on the horizontal moving mechanism, characterized in that: The internal support (2) is set inside the housing (1), and a coil mounting seat (18) is installed on the end of the first rotating mechanism. A Rogowski coil (19) is installed on the coil mounting seat (18). The up-down moving mechanism consists of a first electric telescopic rod (3) installed on the internal support (2), a sliding frame (4) set on the first electric telescopic rod (3), and a conductive rod (6) installed on the sliding frame (4). A side slide rail (5) is provided on the internal support (2). The side slide rail (5) is set vertically, and the sliding frame (4) slides on the side slide rail (5). The partition (36) has a through hole and a through slot. The first rotating mechanism passes through the through hole. The coil mounting seat (18) is located on the outside of the partition (36). The conductive rod (6) passes through the through slot. The maximum extension of the first electric telescopic rod (3) does not exceed the length of the through slot.

2. The automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 1, characterized in that: The forward and backward moving mechanism consists of a second electric telescopic rod (7) installed on the internal bracket (2), a fixed plate (9) connected to the end of the second electric telescopic rod (7), and a surface slide rail (8). The surface slide rail (8) is installed on the internal bracket (2), and a second sliding frame is installed on the back of the fixed plate (9). The second sliding frame slides on the surface slide rail (8).

3. The automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 2, characterized in that: The fixed plate (9) is set on the rear side of the partition (36), and the first rotating mechanism is installed on the fixed plate (9). The first rotating mechanism consists of a transmission motor (10), a transmission sprocket group (11), an eccentric rotating rod (12), a moving rod (13), a fixed mounting rod (14), a deflection plate (15), a fixed rod (16), and an end rotating seat (17).

4. The automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 3, characterized in that: The drive motor (10) is installed on the back of the fixed plate (9), and its output end is connected to the drive sprocket group (11). The drive sprocket groups (11) are connected by chain drive. The drive sprocket group (11) is set on the front of the fixed plate (9). The surface of the driven sprocket of the drive sprocket group (11) is connected to the eccentric rotating rod (12). The eccentric rotating rod (12) and the driven sprocket are eccentrically set.

5. The automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 4, characterized in that: Multiple sets of movable rods (13) are evenly distributed on the surface of the eccentric rotating rod (12). There are two movable rods (13) in each set, and they are arranged in parallel. Only the center of the upper movable rod (13) in each set is rotatably connected to the eccentric rotating rod (12). Each set of movable rods (13) is connected to each other by several deflection plates (15). The deflection plates (15) are rotatably connected to the movable rods (13). The deflection plates (15) are symmetrically distributed in two sets on the movable rods (13). The tail end of the fixed mounting rod (14) is mounted on the fixed plate (9). The front end of the fixed mounting rod (14) is inserted into the center of the deflection plate (15) in the middle position of each set of deflection plates (15). The fixed rod (16) is set in the center of the deflection plates (15) in the two sides of each set of deflection plates (15). The end rotating seat (17) is mounted on the front end of the fixed rod (16). The end rotating seat (17) is L-shaped. The coil mounting seat (18) is mounted on the end rotating seat (17).

6. The automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 1, characterized in that: The coil mounting base (18) has a mounting groove (20) inside. The Rogowski coil (19) consists of a terminal block located below and a hollow coil mounted on the terminal block. The terminal block of the Rogowski coil (19) is inserted into the mounting groove (20). An inner wall groove (21) is provided on the inner wall of the mounting groove (20). An abutment spring (22) is provided inside the inner wall groove (21). A top block (23) is installed at the front end of the abutment spring (22). The end face of the top block (23) is arc-shaped and abuts against the outer wall of the terminal block of the Rogowski coil (19).

7. The automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 6, characterized in that: The outer wall of the terminal block of the Rogowski coil (19) is provided with a coil adjustment mechanism. The coil adjustment mechanism consists of two sets of hinge seats (24) installed on the top of the outer wall of the terminal block, two sets of arc-shaped retainers (25) rotatably connected to the two sets of hinge seats (24), elastic abutment protrusions (26) set inside the two sets of arc-shaped retainers (25), and top sockets (27) and plug plates (28) connecting the two sets of arc-shaped retainers (25). The inner wall of the arc-shaped retainer (25) is arc-shaped and is adapted to the hollow coil of the Rogowski coil (19).

8. The automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 7, characterized in that: The top sockets (27) are respectively installed on the top of the two sets of arc-shaped retainers (25), the plug plate (28) is inserted into the inside of the two top sockets (27), and the hollow coil of the Rogowski coil (19) is snapped into the inside of the arc-shaped retainer (25), and the protrusion (26) elastically abuts against the outer wall of the hollow coil of the Rogowski coil (19).

9. The automatic testing device for the Rogowski coil of a rail-mounted energy meter according to claim 5, characterized in that: The bottom of the coil mounting base (18) is provided with a bottom insertion hole (29), and the outer wall of the coil mounting base (18) is provided with a side insertion hole (30). The side insertion hole (30) and the bottom insertion hole (29) are set vertically and are connected to each other. An internal coil spring (33) is installed on the inner top wall of the bottom insertion hole (29).

10. An automatic testing device for Rogowski coils of a rail-mounted energy meter according to claim 9, characterized in that: A fixed rod (31) is inserted into the bottom socket (29). The bottom of the fixed rod (31) is mounted on the end rotating seat (17). A coil spring slot (32) is provided on the top of the fixed rod (31). The end of the internal coil spring (33) is inserted into the inside of the coil spring slot (32). A limit through hole (34) is provided on the fixed rod (31). Multiple limit through holes (34) are provided and are located at the same height. They all pass through the axis of the fixed rod (31). The limit through hole (34) is adapted to the side socket (30). A socket (35) is inserted into the side socket (30). The end of the socket (35) passes through the side socket (30) and is inserted into the inside of the limit through hole (34).

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