An automatic wire connecting and disconnecting device for the secondary side of a high-voltage mutual inductor and its usage method

Abstract

The present invention discloses an automatic wire connecting and disconnecting device for the secondary side of a high-voltage transformer and its usage method. The device includes two parts: a terminal spacing adjustment assembly and an automatic wire connecting and disconnecting assembly for the secondary side. The terminal spacing adjustment assembly includes two stepper motors, two horizontal mounting bars, and two internal and external thread lead screws; the automatic wire connecting and disconnecting assembly for the secondary side includes two control cylinders, two vertical mounting plates, two nylon intermediate parts, and two copper heads. The two internal and external thread lead screws are respectively connected to the two vertical mounting plates. The retraction rod of the control cylinder is connected to the horizontal mounting bar, the horizontal mounting bar is connected to the nylon intermediate part, and the copper head is fixedly connected to the nylon intermediate part. The present invention has multiple functions such as automatic adjustment of the terminal spacing on the secondary side of the high-voltage transformer, automatic wire connection, and automatic wire disconnection. It not only greatly reduces the labor intensity but also improves the verification efficiency for the secondary side of the high-voltage transformer, and the verification effect can be effectively guaranteed, having good market application prospects.

Description

Technical Field

[0001] The present invention belongs to the field of electricity meter measurement in power systems, and particularly relates to an automatic connection and disconnection device for the secondary side of a high-voltage transformer and its usage method. Background Art

[0002] Currently, the metering and calibration of high-voltage transformers generally adopt manual operation methods. This is mainly due to the fact that high-voltage transformers generally have the characteristics of non-uniform shapes and sizes. Therefore, operators need to perform repetitive and cumbersome operations such as loosening screws, wiring, powering on, metering, disconnecting wires, and tightening screws, which brings a relatively high working intensity to the metering operators of high-voltage transformers. Moreover, there are also disadvantages such as low efficiency and easy wiring errors. When manually wiring the secondary side of a high-voltage transformer, repetitive operations such as loosening screws, clamping terminal clips, and releasing terminal clips also need to be carried out manually, and there is also a risk of clamping the wrong wiring terminal. At the same time, the distances between the secondary side terminals of different high-voltage transformers are not fixed and uniform, so manual adjustment of the distances between the secondary side terminals of high-voltage transformers is required. This not only takes time and effort, but also the accuracy of the distance adjustment is often low, and sometimes repeated adjustments are needed, resulting in low calibration efficiency. Summary of the Invention

[0003] Object of the Invention: In order to overcome the deficiencies existing in the prior art, an automatic connection and disconnection device for the secondary side of a high-voltage transformer is provided. It uses an automated method to replace the existing manual calibration method, and can realize operations such as automated adjustment of the distances between the secondary side terminals of high-voltage transformers, automatic wiring, and automatic disconnection, thereby improving the calibration efficiency of high-voltage transformers.

[0004] Technical Solution: To achieve the above object, the present invention provides an automatic connection and disconnection device for the secondary side of a high-voltage transformer, which includes two parts: a terminal distance adjustment assembly and a secondary side automatic connection and disconnection assembly. The terminal distance adjustment assembly includes two stepper motors, two horizontal mounting bars, and two internal and external thread lead screws. The two stepper motors are respectively installed and fixed at both ends of the two horizontal mounting bars, and the two internal and external thread lead screws are respectively arranged on the two stepper motors; the secondary side automatic connection and disconnection assembly includes two control cylinders, two vertical mounting plates, two nylon intermediate pieces, and two copper heads. The two control cylinders are respectively arranged on the backs of the two vertical mounting plates. There are screw nut seats on both of the two internal and external thread lead screws, and the two internal and external thread lead screws are respectively connected to the two vertical mounting plates through the two screw nut seats. There are two horizontal sliding groove blocks on the vertical mounting plates that are respectively matched with the two horizontal mounting bars, and the horizontal mounting bars are fitted and installed on the horizontal sliding groove blocks. The retracting rod of the control cylinder is connected to the vertical mounting plate, the vertical mounting plate is connected to the nylon intermediate piece, and the copper head is fixedly connected to the nylon intermediate piece.

[0005] Further, the stepper motor is installed and fixed at the end of the horizontal mounting bar through a fixing member.

[0006] Further, the two stepping motors are symmetrically arranged at both ends of the two horizontal mounting bars.

[0007] Further, at least one vertical sliding groove block matching the vertical mounting bar is arranged on the vertical mounting plate, and the vertical mounting bar is fitted on the vertical sliding groove block, and the vertical sliding groove block plays a role in stabilizing and guiding the vertical mounting bar.

[0008] Further, the vertical mounting bar is connected to the nylon intermediate piece by screws.

[0009] Further, the copper head and the nylon intermediate piece are connected by threads.

[0010] A method for using an automatic wire connecting and disconnecting device for the secondary side of a high-voltage transformer includes the following steps:

[0011] S1: Adjust the distance between the two copper heads according to the type of the high-voltage transformer.

[0012] S2: Adjust the position of the automatic wire connecting and disconnecting device with the adjusted distance to the secondary side wiring terminal of the high-voltage transformer.

[0013] S3: Control two control cylinders by the PLC to make the two copper heads drop onto the wiring terminals of the high-voltage transformer, and complete the automatic wire connection operation for the secondary side of the high-voltage transformer.

[0014] S4: After waiting for the verification process of the high-voltage transformer to end, control the two control cylinders to reset by the PLC, and the two copper heads are separated from the wiring terminals of the high-voltage transformer, realizing the automatic wire disconnecting operation for the secondary side of the high-voltage transformer.

[0015] Further, in the process of adjusting the distance between the two copper heads in step S1: The two stepping motors respectively control the movement of the two internal and external thread lead screws, thereby respectively driving the movement of the two vertical mounting plates and the two copper heads. When the distance between the two copper heads is adjusted to the required position, the adjustment of the distance between the two copper heads is completed.

[0016] Further, in the docking process between the copper head and the wiring terminal of the high-voltage transformer in step S3: Control the contraction rod of the control cylinder to extend downward, drive the overall downward movement of the vertical mounting bar, the nylon intermediate piece and the copper head, and make the copper head connect to the wiring terminal of the high-voltage transformer by controlling the extending length of the contraction rod.

[0017] Beneficial effects: Compared with the prior art, the present invention replaces the existing manual verification method with an automated method. Through the coordinated design of two parts, namely the terminal pitch adjustment assembly and the secondary side automatic connection and disconnection assembly, and driven by a stepper motor and a control cylinder, the device has multiple functions such as automated adjustment of the secondary side terminal pitch of the high-voltage transformer, automatic wiring, and automatic disconnection. This not only greatly reduces the labor intensity but also improves the verification efficiency of the secondary side of the high-voltage transformer, and the verification effect can be effectively guaranteed. It solves the problems of low efficiency and high error rate existing in the existing manual method and has good market application prospects. Brief Description of the Drawings

[0018] Figure 1 is the overall device structure schematic diagram of the device of the present invention;

[0019] Figure 2 is the structure schematic diagram of the terminal pitch adjustment assembly;

[0020] Figure 3 is the front structure schematic diagram of the secondary side automatic connection and disconnection assembly;

[0021] Figure 4 is the back structure schematic diagram of the secondary side automatic connection and disconnection assembly;

[0022] Figure 5 is the side view of the secondary side automatic connection and disconnection assembly. Detailed Embodiments

[0023] The following further clarifies the present invention in conjunction with the drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, various equivalent modifications made by those skilled in the art to the present invention fall within the scope defined by the appended claims of this application.

[0024] As Figure 1 shown, the present invention provides an automatic connection and disconnection device for the secondary side of a high-voltage transformer, which includes two parts: a terminal pitch adjustment assembly A1 and a secondary side automatic connection and disconnection assembly A2.

[0025] As Figure 2As shown in the figure, the terminal pitch adjustment assembly A1 includes two stepper motors, two horizontal mounting bars, and two internal and external thread lead screws. The two stepper motors are the left stepper motor 203 and the right stepper motor 207 respectively. The two horizontal mounting bars are the upper horizontal mounting bar 102 and the lower horizontal mounting bar 103 respectively. The two internal and external thread lead screws are the left internal and external thread lead screw 202 and the right internal and external thread lead screw 206 respectively. The left stepper motor 203 is fixedly installed at one end of the upper horizontal mounting bar 102 and the lower horizontal mounting bar 103 through the left fixing member 201. The right stepper motor 207 is fixedly installed at the other end of the upper horizontal mounting bar 102 and the lower horizontal mounting bar 103 through the right fixing member 208. The left internal and external thread lead screw 202 is connected to the left stepper motor 203 through a coupling. The right internal and external thread lead screw 206 is connected to the right stepper motor 207 through a coupling. In the connected terminal pitch adjustment assembly, the left stepper motor 203 and the right stepper motor 207 are symmetrically arranged. The upper horizontal mounting bar 102 and the lower horizontal mounting bar 103 are horizontally arranged. Left screw nut seats 204 and right screw nut seats 205 are respectively arranged on the opposite ends of the left internal and external thread lead screw 202 and the right internal and external thread lead screw 206.

[0026] As Figures 3 to 5 shown in the figure, the secondary side automatic connection and disconnection assembly A2 includes two control cylinders, two vertical mounting plates, two nylon intermediate members, and two copper heads. The two control cylinders are the left control cylinder 117 and the right control cylinder 118 respectively. The two vertical mounting plates are the left vertical mounting plate 125 and the right vertical mounting plate 126 respectively. The two nylon intermediate members are the left nylon intermediate member 111 and the right nylon intermediate member 107 respectively. The two copper heads are the left copper head 110 and the right copper head 109 respectively. The left control cylinder 117 and the right control cylinder 118 are respectively arranged on the back surfaces of the left vertical mounting plate 125 and the right vertical mounting plate 126. The retraction rod of the left control cylinder 117 is connected to the left vertical mounting bar 113. Two left vertical sliding groove blocks 114 matching the left vertical mounting bar 113 are arranged on the left vertical mounting plate 125. The left vertical mounting bar 113 is fitted on the two left vertical sliding groove blocks 114. The end of the left vertical mounting bar 113 is connected to the left nylon intermediate member 111 through two left screws 112. The left copper head 110 is installed and fixed on the left nylon intermediate member 111 through the left threaded hole 127. The retraction rod of the right control cylinder 118 is connected to the right vertical mounting bar 106. Two right vertical sliding groove blocks 104 matching the right vertical mounting bar 106 are arranged on the right vertical mounting plate 126. The right vertical mounting bar 106 is fitted on the two right vertical sliding groove blocks 104. The end of the right vertical mounting bar 106 is connected to the right nylon intermediate member 107 through two right screws 108. The right copper head 109 is installed and fixed on the right nylon intermediate member 107 through the right threaded hole 128.

[0027] On the front surface of the left vertical mounting plate 125, there are respectively provided an upper left horizontal sliding groove block 121 and a lower left horizontal sliding groove block 123. On the front surface of the right vertical mounting plate 126, there are respectively provided an upper right horizontal sliding groove block 122 and a lower right horizontal sliding groove block 124. The upper horizontal mounting strip 102 is fitted on the upper left horizontal sliding groove block 121 and the upper right horizontal sliding groove block 122, and the lower horizontal mounting strip 103 is fitted on the lower left horizontal sliding groove block 123 and the lower right horizontal sliding groove block 124. In addition, the left lead screw nut seat 204 and the right lead screw nut seat 205 are respectively connected and arranged on the left vertical mounting plate 125 and the right vertical mounting plate 126.

[0028] Based on the above automatic connection and disconnection device, the present invention provides a method for using a high-voltage transformer secondary side automatic connection and disconnection device, including the following steps:

[0029] S1: According to the type of the high-voltage transformer, adjust the distance between the left copper head 110 and the right copper head 109, specifically as follows:

[0030] The left internal and external thread lead screw 202 and the right internal and external thread lead screw 206 of the left stepping motor 203 and the right stepping motor 207 are respectively controlled by the PLC to move. The left internal and external thread lead screw 202 can drive the left vertical mounting plate 125 to move horizontally due to the left lead screw nut seat 204, thereby driving the left copper head 110 to move horizontally; the right internal and external thread lead screw 206 can drive the right vertical mounting plate 126 to move horizontally due to the right lead screw nut seat 205, thereby driving the right copper head 109 to move horizontally; thus, the distance between the left copper head 110 and the right copper head 109 is adjusted.

[0031] S2: Adjust the position of the automatic connection and disconnection device with the adjusted distance to directly above the secondary side wiring terminal of the high-voltage transformer;

[0032] S3: The PLC controls two control cylinders to make the two copper heads drop onto the wiring terminal of the high-voltage transformer, completing the automatic wiring operation of the secondary side of the high-voltage transformer; specifically:

[0033] The left control cylinder 117 controls the left vertical mounting strip 113 to move downward through its telescopic rod, thereby driving the left copper head 110 to move downward until it is connected to the corresponding wiring terminal on the secondary side of the high-voltage transformer; similarly, the right control cylinder 118 controls the right vertical mounting strip 106 to move downward through its telescopic rod, thereby driving the right copper head 109 to move downward until it is connected to the corresponding wiring terminal on the secondary side of the high-voltage transformer.

[0034] S4: After waiting for the high-voltage transformer calibration process to end, the PLC controls the two control cylinders to reset, and the left copper head 110 and the right copper head 109 are separated from the high-voltage transformer wiring terminal, realizing the automatic disconnection operation of the secondary side of the high-voltage transformer.

Claims

1. An automatic connection and disconnection device for the secondary side of a high-voltage transformer, characterized in that, it includes a terminal spacing adjustment assembly and a secondary side automatic connection and disconnection assembly. The terminal spacing adjustment assembly includes two stepper motors, two horizontal mounting bars and two internal and external thread lead screws. The two stepper motors are respectively installed and fixed at both ends of the two horizontal mounting bars, and the two internal and external thread lead screws are respectively arranged on the two stepper motors; the secondary side automatic connection and disconnection assembly includes two control cylinders, two vertical mounting plates, two nylon intermediate pieces and two copper heads. The two control cylinders are respectively arranged on the backs of the two vertical mounting plates. Screw nut seats are arranged on the two internal and external thread lead screws, and the two internal and external thread lead screws are respectively connected to the two vertical mounting plates through the two screw nut seats. Two horizontal sliding groove blocks matching the two horizontal mounting bars are arranged on the vertical mounting plates, and the horizontal mounting bars are fitted and installed on the horizontal sliding groove blocks. The retracting rod of the control cylinder is connected to the vertical mounting plate, the vertical mounting plate is connected to the nylon intermediate piece, and the copper head is fixedly connected to the nylon intermediate piece; at least one vertical sliding groove block matching the vertical mounting plate is arranged on the vertical mounting plate, and the vertical mounting plate is fitted on the vertical sliding groove block; the vertical mounting plate is connected to the nylon intermediate piece by screws.

2. The automatic connection and disconnection device for the secondary side of a high-voltage transformer according to claim 1, characterized in that, the stepper motor is installed and fixed at the end of the horizontal mounting bar through a fixing piece.

3. The automatic connection and disconnection device for the secondary side of a high-voltage transformer according to claim 1 or 2, characterized in that, the two stepper motors are symmetrically arranged at both ends of the two horizontal mounting bars.

4. The automatic connection and disconnection device for the secondary side of a high-voltage transformer according to claim 1, characterized in that, the copper head and the nylon intermediate piece are connected by threads.

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