CN104020435B - A kind of metering low-voltage current mutual inductor pressure and error verification device of insulation - Google Patents

Abstract

The invention relates to an insulation withstand voltage and error verification device for a low-voltage current transformer for measurement. The device includes a general basic platform (1), a lifting and grounding module (2), a secondary wiring module (3), and a primary guiding and clamping module (4), the threading mechanism (5), the threading mechanism (5) is arranged on the upper surface of the universal basic platform (1), and the described secondary wiring module (3) is erected on both sides of the threading mechanism (5) On the side, the lifting grounding module (2) is set on the secondary wiring module (3), and the primary guide clamping module (4) is set on the upper surface of the universal foundation platform (1) and is located in the threading mechanism ( 5) Beside. Compared with the prior art, the present invention has the advantages of simple structure, flexibility and reliability, strong versatility and the like.

Description

A low-voltage current transformer insulation withstand voltage and error verification device for metering

technical field

The invention relates to a device for checking current transformers, in particular to a device for checking insulation withstand voltage and error of low-voltage current transformers for metering.

Background technique

The current transformer used in the power grid is to reduce the large current in the primary line to the small current required by the secondary measurement circuit, and mainly realize the functions of electrical isolation and proportional measurement at both ends of the high and low voltage. The current transformer for metering is one of the main measuring instruments used in the settlement of electric energy trade, and it belongs to the national compulsory verification specification. Each metering current transformer needs to pass the initial verification and periodic verification before it can be used normally.

On the existing current transformer verification assembly line, generally speaking, each detection station is equipped with a corresponding matching detection device. Due to the large number of transformer detection items, multiple sets of different equipment are required for verification. When performing these verifications It takes a lot of time to manually connect and disconnect the wires, which has become the main bottleneck to improve the efficiency of transformer verification.

Contents of the invention

The object of the present invention is to provide a simple in structure, flexible and reliable, and highly versatile low-voltage current transformer insulation withstand voltage and error verification device for metering in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions; a low-voltage current transformer insulation withstand voltage and error verification device for metering, characterized in that the device includes a general basic platform, a lifting grounding module, a secondary wiring module, a primary Guiding clamping module and threading mechanism, the threading mechanism is arranged on the upper surface of the universal basic platform, the secondary wiring module is erected on both sides of the threading mechanism, and the supporting grounding module is arranged on the secondary wiring On the module, the primary guide clamping module is arranged on the upper surface of the common foundation platform and is located next to the threading mechanism.

The general basic platform includes a rectangular support, an electrical measuring instrument installation plate arranged in the rectangular support, and a working platform arranged on the top of the rectangular support.

The supporting grounding module includes a top plate, a bottom plate, a grooved side plate connecting both sides of the top plate and the bottom plate, a lifting plate, a driver and a grounding column arranged between the top plate and the bottom plate.

The secondary wiring module includes a support frame erected on a general-purpose basic platform, a telescopic screw rod arranged on the support frame, an upper pallet and a lower pallet arranged on the telescopic screw rod, and an upper pallet arranged on the upper pallet and the driver between the lower pallet; the lower surface of the lower pallet is provided with a plurality of wiring jaws.

The thread-through mechanism includes a guide rail arranged in the middle of the upper surface of the universal foundation platform, and a center-through copper bar arranged beside the guide rail, and the center-through copper bar is connected to a synchronous motor through a synchronous belt.

The primary guide clamping module includes a clamping frame and a clamping base arranged beside the through-core copper bar. The clamping frame can rotate around the clamping base at an angle of 0 to 30 degrees to lift and release And press the role of clamping.

Reasonably arrange electrical and electrical measuring devices inside the general platform of the insulation withstand voltage testing station and the error checking station. The electrical and electrical measuring devices are connected to the PLC controller.

Compared with the prior art, the present invention has the following advantages:

1. Both the insulation and voltage withstand station and the error verification station adopt the "universal basic platform" module, which has a more neat and beautiful appearance, and is convenient for production, assembly, replacement and transportation.

2. The structure adopts modular design, which makes installation and debugging more convenient. Modularize the mechanical components on the station, such as the lifting grounding module, the secondary wiring module, the primary guiding and clamping module, etc. This enables the standardization of various parts and facilitates assembly and replacement of spare parts.

3. The core-through mechanism is supported by the "universal reference platform" module, and the synchronous belt is used to drive the core-through copper bar, which makes the mechanical structure simpler and more compact.

4. Reasonably arrange electrical and electrical measuring devices inside the general platform of the insulation withstand voltage testing station and the error checking station. In this way, not only the overall structure is beautiful in appearance, but also the integrated wiring is regular.

5. The verification system adopts the control method design combining distributed I/O and industrial field bus. The PLC controller is in the control cabinet, and each I/O module is distributed on the corresponding station. The PLC controller and I/O module The connection through the industrial field bus can greatly reduce the connection lines from the control cabinet to the corresponding station, thereby improving the reliability of electrical control.

6. Due to the distributed control design, centralized control is realized, wiring is simplified, and reliability is improved.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in Figure 1, a low-voltage current transformer insulation withstand voltage and error verification device for metering, the device includes a general basic platform 1, a lifting grounding module 2, a secondary wiring module 3, a primary guide clamping module 4, a wear-through The core mechanism 5, the core-through mechanism 5 is arranged on the upper surface of the universal basic platform 1, the secondary wiring module 3 is erected on both sides of the core-through mechanism 5, and the lifting grounding module 2 is arranged on the secondary wiring On the module 3 , the primary guiding and clamping module 4 is arranged on the upper surface of the universal foundation platform 1 and is located next to the threading mechanism 5 .

The general basic platform 1 includes a rectangular support, an electrical measuring instrument installation plate 11 arranged in the rectangular support, and a working platform 12 arranged on the top of the rectangular support.

The supporting grounding module 2 includes a top plate, a bottom plate, a grooved side plate connecting both sides of the top plate and the bottom plate, a lifting plate, a driver and a grounding column arranged between the top plate and the bottom plate.

The secondary wiring module 3 includes a support frame 31 erected on the universal basic platform 1, a telescopic screw 32 arranged on the support frame, an upper pallet 33 and a lower pallet arranged on the telescopic screw 32 34, a driver arranged between the upper pallet 33 and the lower pallet 34; the lower surface of the lower pallet 34 is provided with a plurality of wiring jaws 35, and the driver drives the lower pallet to move up and down along the telescopic screw rod 32, thereby Make each connection jaw 35 move up and down, so as to detect the connection position on the top of the workpiece.

The thread-through mechanism 5 includes a guide rail 51 arranged in the middle of the upper surface of the general-purpose base platform 1, and a center-through copper bar 52 arranged beside the guide rail. The center-through copper bar 52 is connected to a synchronous motor through a synchronous belt. The through copper bar 52 is clamped on the guide rail 51, and can move forward and backward along the guide rail under the drive of the synchronous motor. The primary guide clamping module 4 includes a clamping frame 41 and a clamping frame arranged beside the through copper bar. The base 42 and the clamping frame 41 can rotate around the clamping base 42, and the angle of rotation is 0-30 degrees, which play the role of lifting, releasing and pressing down for clamping.

When the workpiece to be detected is transported to the guide rail 51, it is clamped on the through copper bar 52 through the clamping frame 41, and its horizontal position is adjusted through the through copper bar, and its position is adjusted by lifting the lifting plate in the grounding module 2. Longitudinal position, and grounding, is detected by the electric measuring instrument arranged in the installing plate 11 of the electric measuring instrument.

Claims (4)

1. a kind of metering with low-voltage current mutual inductor insulate pressure and error verification device, it is characterised in that the device includes leading to With basic platform (1), hold up earthing module (2), secondary connection module (3), be once oriented to clamp module (4), punching mechanism (5), described punching mechanism (5) is arranged on general basic platform (1) upper surface, and described secondary connection module (3) is erected at Punching mechanism (5) both sides, described picking-up earthing module (2) are arranged in secondary connection module (3), a described guide clip Tight module (4) is arranged on general basic platform (1) upper surface and is located at punching mechanism (5) side；

Trough of belt side plate of the described picking-up earthing module (2) including top board, base plate, connection top board and base plate both sides, top board and bottom The lifter plate of plate middle setting, driver and earthing rod；

Described secondary connection module (3) is arranged on the bracing frame including the bracing frame being erected on general basic platform (1) Scalable screw rod, the mounting plate being arranged on the scalable screw rod and bottom plate are arranged between mounting plate and bottom plate Driver；Described bottom plate lower surface is provided with multiple wiring jaws.

2. a kind of metering according to claim 1 low-voltage current mutual inductor insulate pressure and error verification device, and which is special Levy and be, described general basic platform (1) is installed including the electric Electrical Measuring Instrument arranged in rectangle support, the rectangle support Plate, the work platformses arranged at the top of the rectangle support.

3. a kind of metering according to claim 1 low-voltage current mutual inductor insulate pressure and error verification device, and which is special Levy and be, described punching mechanism (5) is including being arranged on the guide rail of general basic platform (1) upper surface middle part, be arranged on guide rail Other punching copper bar, the punching copper bar connect synchronous motor by Timing Belt.

4. a kind of metering according to claim 3 low-voltage current mutual inductor insulate pressure and error verification device, and which is special Levy and be, described once guiding clamp module (4) is including the clamping support and grip base being arranged on by punching copper bar.