Connection structure for selective shunt tripping generator device in case of main transformer fault

Abstract

The utility model discloses a connecting structure for a selective shunt tripping generator device during main transformer fault, which comprises an insulating shell, a conducting ring is fixedly inserted in one side of the insulating shell, a pressing plate is hinged in the insulating shell through a pin shaft, and a locking pin in sliding connection is arranged on the pressing plate in a penetrating manner. The two ends of the locking pin penetrate through the outside of the insulating shell and are in sliding connection with the insulating shell, sliding grooves are symmetrically formed in the inner walls of the two sides of the insulating shell, the trapezoidal inclined block is continuously pressed in the moving process through the ejector block, so that the fixing effect is achieved, the situation that the cable moves outwards in the pressing process is avoided, and the cable is prevented from being damaged. Therefore, connection stability and conductivity are ensured, short circuit is avoided, operation is simple and convenient, other work is not needed, long-term recycling can be achieved, and cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to urea production and manufacturing field, concretely relates to a connection structure for selective tie -in generator device when main transformer fault. BACKGROUND

[0002] In the power system of large chemical plant, there is often a self -generator and company one main transformer operation, when main transformer fault is avoided generator isolated network operation, needs tie -in generator, but because power system working condition reason generator and main transformer grid often exist uncertainty, so there is technical difficulty to selective tie -in generator when main transformer fault.

[0003] In order to solve the above problem, therefore, the existing plant mostly installs a selective tie -in generator device when main transformer fault, to solve the above problem, but in actual installation and production process, after installing the device, the device needs to be debugged and modified.

[0004] In the process of modification, the line needs to be connected and removed constantly, in order to achieve the optimal working efficiency state and low failure rate state.

[0005] The existing line connection mostly connects through the connecting piece and the element in the electronic equipment, usually adopts a deformable arc conductive sheet and a circular ring conductive sheet fixed by welding, one end of the cable is inserted into the deformable arc conductive sheet, is compressed through pliers and other tools, and then the circular ring conductive sheet and the output end of the electronic element are fixed by bolts.

[0006] This connecting piece has some shortcomings, after being fixed, because the deformable arc conductive sheet itself has strong deformability, after long -term use, it is inevitable that loosening appears, and when disassembling and replacing new connecting piece, it is relatively inconvenient, and tools need to be used to break it, the repeated use rate is low, and long -term accumulation increases the debugging and maintenance cost. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a connection structure for selective tie -in generator device when main transformer fault.

[0008] The utility model is implemented by the following technical schemes:

[0009] The utility model provides a kind of connection structure for the selective generator device of main transformer fault, including insulating shell, the side of insulating shell is fixed and inserts electrically conductive ring, is hinged in insulating shell by pin shaft and has compression plate, locking pin of sliding connection is set on compression plate, the both ends of locking pin are respectively passed through the outside of insulating shell and are slidably connected with it, the inner wall of the two sides of insulating shell is symmetrically provided with sliding slot, sliding block is slidably connected in each sliding slot, connecting rod is fixedly connected on the side wall of each sliding block, compression block is arranged between two connecting rods, the top of compression block is fixedly connected with trapezoidal inclined block, the bottom of compression plate is fixedly connected with top block, the bottom of top block is arc shape, and the bottom of top block is attached with the inclined surface of trapezoidal inclined block, dovetail groove is respectively arranged on the two sides of compression block, dovetail block is slidably connected in each dovetail groove, spring is arranged in each dovetail groove, and one end of two connecting rods is respectively fixedly connected with the side wall of corresponding dovetail block.

[0010] Preferably, the inner wall of the side of insulating shell is arc shape, and one end of compression plate is attached with the arc-shaped inner wall of insulating shell.

[0011] The utility model discloses the advantages: device is through the use of top block to trapezoidal inclined block in the process of moving, to its constantly compress tightly, to realize fixed effect, avoid cable in the process of compressing and appear outward displacement condition, to ensure the stability of connection and conductivity, avoid the situation of short circuit, simple and convenient operation simultaneously, need not use other work, can long -term circulation uses, saves the cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the structure schematic diagram of the utility model;

[0013] Fig. 2 It is the A-A section view of the utility model.

[0014] In the drawing: insulating shell 1, electrically conductive ring 2, compression plate 3, sliding slot 4, sliding block 5, compression block 6, top block 7, locking pin 8, trapezoidal inclined block 9, connecting rod 10, dovetail groove 11, dovetail block 12, spring 13. PREFERRED EMBODIMENT

[0015] As Figs. 1-2As shown, a kind of main fault selective generator device connection structure for jump, including insulating shell 1, the side of insulating shell 1 is fixed with electrically conductive ring 2, the insulating shell 1 is hinged by pin shaft and has pressure plate 3, locking pin 8 of sliding connection is set on pressure plate 3, the both ends of locking pin 8 are respectively through the sliding connection of insulating shell 1 and with it, the inner wall of the two sides of insulating shell 1 is symmetrically provided with sliding groove 4, the sliding block 5 of sliding connection is connected in each sliding groove 4, the sidewall of each sliding block 5 is fixedly connected with connecting rod 10, pressure block 6 is arranged between two connecting rods 10, the top of pressure block 6 is fixedly connected with trapezoidal inclined block 9, the bottom of pressure plate 3 is fixedly connected with top block 7, the bottom of top block 7 is arc shape, and the bottom of top block 7 is attached with the inclined surface of trapezoidal inclined block 9, dovetail groove 11 is respectively arranged on the two sides of pressure block 6, the dovetail block 12 of sliding connection is connected in each dovetail groove 11, spring 13 is arranged in each dovetail groove 11, the sidewall of corresponding dovetail block 12 is fixedly connected with the one end of two connecting rods 10, when working, the end of cable is stripped, and internal copper wire is exposed, then it is inserted in insulating shell 1, at this time, since spring 13 is in normal state, pressure block 6 will be located above cable, so that it will not affect the insertion of copper wire, after making copper wire closely with the insertion part of electrically conductive ring 2 closely contact, pressure plate 3 is pressed down, in the process of pressing, top block 7 is contacted with the inclined surface of trapezoidal inclined block 9, so as to promote trapezoidal inclined block 9 to displace, at this time, sliding block 5 has been moved to maximum distance in sliding groove 4, trapezoidal inclined block 9 can only move downward, so as to compress the insulating sheath of cable, so as to realize the compression work of cable, so that in the process of compression, cable can be effectively prevented from moving outward, so as to ensure the stable contact of copper wire and electrically conductive ring 2.

[0016] The inner wall of the side of insulating shell 1 is arc shape, one end of pressure plate 3 is attached with the arc-shaped inner wall of insulating shell 1, so that pressure plate 3 is attached with the arc-shaped inner wall of insulating shell 1 after rotating to maximum range, so as to facilitate the insertion of locking pin 8.

[0017] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A connection structure for a device for selectively parallel- connecting generators in the event of a main transformer failure, characterized by: The utility model provides an insulating shell, the one side of insulating shell is fixed and is inserted with conductive ring, is hinged with the compression plate in insulating shell through the pin shaft, is provided with the sliding connection locking pin on the compression plate, the both ends of locking pin respectively pass through the sliding connection of insulating shell outward, the bilateral inner wall of insulating shell is provided with the symmetrical slide groove, the sliding block is connected in each slide groove, the lateral wall of each sliding block is fixedly connected with the connecting rod, and the compression block is arranged between two connecting rods, the top of compression block is fixedly connected with trapezoidal inclined block, the bottom of compression plate is fixedly connected with the top block, the bottom of top block is arc shape, and the bottom of top block is attached with the inclined surface of trapezoidal inclined block, the both sides of compression block are respectively provided with dovetail groove, the dovetail block is connected in each dovetail groove, and the spring is arranged in each dovetail groove, and one end of two connecting rods is fixedly connected with the lateral wall of corresponding dovetail block.

2. The connection structure for a device for selectively switching on a generator at the time of a main transformer failure according to claim 1, characterized in that: The inner wall of one side of the insulating shell is arc-shaped, and one end of the compression plate is attached to the arc-shaped inner wall of the insulating shell.

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