CN110444376B

CN110444376B - Distribution silicon steel oil-immersed transformer high-low voltage lead mounting structure

Info

Publication number: CN110444376B
Application number: CN201910805469.5A
Authority: CN
Inventors: 屠宁
Original assignee: Zhongshan Baina Electronic Technology Co ltd
Current assignee: ZHONGSHAN BAINA ELECTRONIC TECHNOLOGY Co.,Ltd.
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2021-08-13
Anticipated expiration: 2039-08-29
Also published as: CN110444376A

Abstract

The invention discloses a high-low voltage lead mounting structure of a distribution silicon steel oil immersed transformer, which comprises a transformer body, wherein two device grooves are formed in the upper end surface of the transformer body, grooves are formed in the upper ends, provided with mounting seats, of the two device grooves, slots are formed in the inner bottom of each groove, a current-conducting plate is arranged in each groove, a plurality of water storage grooves are formed in the inner bottom of each groove at equal intervals along the circumferential direction of the groove, telescopic airbags are hermetically connected to the notches of the water storage grooves, the telescopic ends of the telescopic airbags are glued to the lower ends of the current-conducting plates, the inner bottom of each groove is provided with a current-conducting slot, a current-conducting rod corresponding to the current-conducting slot is welded to the lower ends of the current-conducting plates, and a wiring terminal is arranged at the upper ends of the current-conducting plates. The invention can cut off power supply in time after short circuit, effectively protects the transformer, and drives the pushing mounting seat to move by the rotation of the threaded rod, so that high and low voltage wires can be far away from each other when short circuit occurs, and the probability of touching the high and low voltage wires is reduced.

Description

Distribution silicon steel oil-immersed transformer high-low voltage lead mounting structure

Technical Field

The invention relates to the technical field of transformers, in particular to a high-low voltage lead mounting structure of a distribution silicon steel oil immersed transformer.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like. According to the application, the method can be divided into: power transformers and special transformers (furnace transformers, rectification transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, mutual inductors, etc.).

The transformer consists of an iron core (or a magnetic core) and a coil, wherein the coil is provided with two or more than two windings, the winding connected with a power supply is called a primary coil, and the other windings are called secondary coils. It can transform alternating voltage, current and impedance. The simplest iron core transformer is composed of an iron core made of soft magnetic material and two coils with different numbers of turns sleeved on the iron core, wherein the iron core has the function of strengthening magnetic coupling between the two coils. In order to reduce eddy current and hysteresis loss in iron, the iron core is formed by laminating painted silicon steel sheets, and two coils are not electrically connected and are wound by insulated copper wires (or aluminum wires). One coil is connected with an alternating current power supply and is called a primary coil (or a primary coil), and the other coil is connected with an electric appliance and is called a secondary coil (or a secondary coil). The actual transformer is complex and inevitably has copper losses (coil resistance heating), iron losses (core heating) and leakage (magnetic flux lines closed by air), etc., and only the ideal transformer will be described here for simplicity of discussion. The ideal transformer holds the following conditions: the leakage flux, the resistances of the primary and secondary coils, the core loss, and the no-load current (the current in the primary coil with the secondary coil open) were neglected. For example, when the power transformer is operated in full load (the secondary winding outputs rated power), the situation is close to the ideal transformer.

The existing transformer high-low voltage lead wire is fixed through the lead clamp, the copper bar quantity can be increased, the cost is increased, meanwhile, the existing transformer high-low voltage lead wire cannot be separated from the transformer body in time when an accident happens, the transformer body can be damaged, and the transformer is scrapped.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a high-low voltage lead mounting structure of a distribution silicon steel oil immersed transformer, which can cut off power supply in time after short circuit, effectively protects the transformer, drives a mounting seat to move by rotating a threaded rod, enables high-low voltage wires to be far away from each other when short circuit occurs, and reduces the probability of touching the high-low voltage wires.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-low voltage lead mounting structure of a distribution silicon steel oil immersed transformer comprises a transformer body, wherein two device grooves are formed in the upper end face of the transformer body, grooves are formed in the upper ends, provided with mounting seats, of the two device grooves, slots are formed in the inner bottom of each groove, a current-conducting plate is arranged in each groove, a plurality of water storage grooves are formed in the inner bottom of each groove at equal intervals along the circumferential direction of the groove, telescopic airbags are hermetically connected to the notches of the water storage grooves, the telescopic ends of the telescopic airbags are glued to the lower ends of the current-conducting plates, the inner bottom of each groove is provided with a current-conducting slot, a current-conducting rod corresponding to the current-conducting slot is welded to the lower ends of the current-conducting plates, a binding post is arranged at the upper end of each current-conducting plate, a fixing ring is welded to the side wall of the lower end of each binding post, the fixing ring is fixedly connected to the upper end of each current-conducting plate through a locking screw, and a current-conducting elastic sheet is arranged between each current-conducting plate and each binding post, and the upper end surface of the transformer body is provided with a pushing mechanism for pushing the mounting seat to move.

Preferably, pushing mechanism is including seting up the device chamber at transformer body upper end middle part, the interior bottom in device chamber rotates and is connected with the worm, the inner wall in device chamber rotates and is connected with the worm wheel with worm meshing, two the circle chamber with device chamber intercommunication is seted up to the inner wall in device groove, be equipped with the drum in the circle chamber, the coaxial fixed connection of drum is on the lateral wall of worm wheel, drum female connection has the threaded rod, the one end fixed connection that the drum was kept away from to the threaded rod is on the lateral wall of mount pad.

Preferably, the upper end of the transformer body is provided with a mounting groove, the upper end of the worm penetrates through the inner wall of the device cavity and extends to the mounting groove, a coil spring is mounted at one end of the worm, which is located at the mounting groove, and the free end of the coil spring is fixedly connected to the inner wall of the mounting groove.

Preferably, the coil spring is made of a memory metal material.

Preferably, a low-boiling-point evaporating liquid is arranged in the water storage tank, and the low-boiling-point evaporating liquid is dichloromethane.

The invention has the following beneficial effects:

1. the low-boiling-point evaporating liquid is arranged in the water storage tank, after the circuit is short-circuited, the circuit can generate a large amount of heat, the low-boiling-point evaporating liquid is evaporated at high temperature, and then the telescopic air bag expands to push the current-conducting plate to move upwards, so that the current-conducting rod is separated from the current-conducting slot, the circuit is cut off, the power supply can be cut off in time after the short circuit, and the transformer is effectively protected;

2. make the coil spring take place deformation through high temperature, and then make to produce torsion and drive the worm and rotate, the worm rotates and drives the worm wheel and rotate, and the worm wheel rotates and drives the drum and rotate, and the drum rotates the threaded rod that drives threaded connection with it and removes, and the threaded rod rotates and drives and promote the mount pad and remove, and then makes the high-low voltage electric wire keep away from, reduces the probability that high-low voltage electric wire touched.

Drawings

Fig. 1 is a schematic structural view of a high-low voltage lead mounting structure of a distribution silicon steel oil-immersed transformer according to the present invention;

fig. 2 is a schematic top view of the high-low voltage lead mounting structure of the distribution silicon steel oil-immersed transformer according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1;

FIG. 4 is an enlarged view of the structure at B in FIG. 1;

FIG. 5 is a schematic side view of a high-low voltage lead mounting structure of a distribution silicon steel oil-immersed transformer according to the present invention

In the figure: 1 transformer body, 2 fixing seats, 3 binding posts, 4 leading wires, 5 threaded rods, 6 cylinders, 7 worm wheels, 8 worms, 9 mounting seats, 10 conductive elastic sheets, 11 device grooves, 12 coil springs, 13 guide grooves, 14 guide blocks, 15 fixing rings, 16 water storage grooves, 17 conductive slots, 18 conductive rods, 19 telescopic airbags, 20 grooves and 21 conductive plates.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, a distribution silicon steel oil-immersed transformer high-low voltage lead mounting structure, including transformer body 1, the surface coating of transformer body 1 has the rich zinc priming paint of epoxy, fixing base 2 is installed to transformer body 1's lower extreme, the lower extreme of fixing base 2 is provided with anti-skidding line, two device grooves 11 have been seted up to transformer body 1's up end, two device inslot 11 all are equipped with the upper end of mount pad 9 and have seted up recess 20, the interior bottom of recess 20 is equipped with slot 17, be equipped with current conducting plate 21 in the recess 20, the interior bottom of recess 20 is equipped with a plurality of aqua storage tanks 16 along its circumference equidistant, the notch department sealing connection of aqua storage tank 16 has flexible gasbag 19, flexible end veneer of flexible gasbag 19 is at the lower extreme of current conducting

plate

21, 16 is equipped with low boiling evaporation liquid in the aqua storage tank, low boiling evaporation liquid is dichloromethane.

The inner bottom of the groove 20 is provided with a conductive slot 17, the lower end of the conductive plate 21 is welded with a conductive rod 18 corresponding to the conductive slot 17, the depth of the conductive slot 17 is slightly larger than the length of the conductive rod 18, and the conductive rod 18 is tightly attached to the inner wall of the conductive slot 17.

The upper end of current conducting plate 21 is equipped with terminal 3, the welding of the lower extreme lateral wall of terminal 3 has solid fixed ring 15, gu fixed ring 16 passes through locking screw fixed connection in the upper end of current conducting plate 21, be equipped with electrically conductive shell fragment 10 between current conducting plate 21 and the terminal 3, the device chamber has been seted up at the upper end middle part of transformer body 1, the interior bottom in device chamber rotates and is connected with worm 8, the inner wall in device chamber rotates and is connected with worm wheel 7 with the meshing of worm 8, the circle chamber that communicates with the device chamber is seted up to the inner wall in two device grooves 11, guide way 13 has been seted up to the inner wall in circle chamber, sliding connection has guide block 14 in the

guide way

13, 14 fixed connection of guide block is on the lateral wall of threaded rod 5, be equipped with drum 6 in the circle chamber, the coaxial fixed connection of drum 6 is on the lateral wall of worm wheel 7, drum 6 threaded rod 5, the one end fixed connection that drum 6 was kept away from to threaded rod 5 is on the lateral wall of mount pad 9.

The upper end of transformer body 1 is equipped with the mounting groove, and the upper end of worm 8 runs through the inner wall in device chamber and extends to the mounting groove, and the one end that worm 8 is located the mounting groove is installed coil spring 12, and the free end fixed connection of coil spring 12 is on the inner wall of mounting groove, and coil spring 12 adopts memory metal material to make.

The lead mounting includes the following steps;

s1, placing the mounting seat 9 in the device groove 11, and then connecting the mounting seat 9 with the threaded rod 5 through welding or screws;

s2, rotating the worm 8, driving the worm wheel 7 to rotate through the rotation of the worm 8, driving the cylinder 6 to rotate through the rotation of the worm wheel 7, driving the threaded rod 5 in threaded connection with the cylinder 6 to move through the rotation of the cylinder 6, and adjusting the two mounting seats 9 to proper positions;

s3, mounting the coil spring 12 in the worm 8 in the mounting groove, and welding the free end of the coil spring 12 on the inner wall of the mounting groove;

s4, injecting low boiling point evaporation liquid into the water storage tank 16, installing the telescopic air bag 19 at the notch of the water storage tank 16, inserting the conducting rod 18 into the conducting slot 17, and continuously pulling and inserting for several times to enable the conducting rod 18 to freely move in the conducting slot 17;

s5, placing the conductive elastic sheet 10 between the wiring terminal 3 and the conductive plate 21, and fixing the wiring terminal 3 on the conductive plate 21 through a locking screw;

and S6, after the terminal 3 is installed, installing the lead 4 on the terminal 3.

According to the invention, the low-boiling-point evaporating liquid is arranged in the water storage tank 16, after a short circuit occurs in a circuit, a large amount of heat can be generated in the circuit, the low-boiling-point evaporating liquid is evaporated at high temperature, the telescopic air bag 19 is expanded, the telescopic air bag is expanded to push the current conducting plate 21 to move upwards, the current conducting rod 18 is separated from the current conducting slot 17, the circuit is cut off, power supply can be cut off in time after the short circuit, the transformer is effectively protected, the coil spring 12 is deformed through the high temperature, the torsion force is generated to drive the worm 8 to rotate, the worm 8 rotates to drive the worm wheel 7 to rotate, the worm wheel 7 rotates to drive the cylinder 6 to rotate, the cylinder 6 rotates to drive the threaded rod 5 in threaded connection with the cylinder to move, the threaded rod 5 rotates.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The high-low voltage lead mounting structure of the distribution silicon steel oil immersed transformer comprises a transformer body (1) and is characterized in that two device grooves (11) are formed in the upper end face of the transformer body (1), mounting seats (9) are arranged in the two device grooves (11), a groove (20) is formed in the upper end of each mounting seat (9), a conductive plate (21) is arranged in each groove (20), a plurality of water storage grooves (16) are formed in the inner bottom of each groove (20) at equal intervals along the circumferential direction of the groove, telescopic air bags (19) are connected to the notches of the water storage grooves (16) in a sealing mode, the telescopic ends of the telescopic air bags (19) are glued to the lower ends of the conductive plates (21), conductive slots (17) are formed in the inner bottom of each groove (20), and conductive rods (18) corresponding to the positions of the conductive slots (17) are welded to the lower ends of the conductive plates (21), the upper end of the current-conducting plate (21) is provided with a terminal (3), the side wall of the lower end of the terminal (3) is welded with a fixing ring (15), the fixing ring (15) is fixedly connected to the upper end of the current-conducting plate (21) through a locking screw, a current-conducting elastic sheet (10) is arranged between the current-conducting plate (21) and the terminal (3), and the upper end face of the transformer body (1) is provided with a pushing mechanism for pushing the mounting seat (9) to move;

the pushing mechanism comprises a device cavity arranged in the middle of the upper end of the transformer body (1), a worm (8) is rotatably connected to the inner bottom of the device cavity, a worm wheel (7) meshed with the worm (8) is rotatably connected to the inner wall of the device cavity, circular cavities communicated with the device cavity are formed in the inner walls of the two device grooves (11), a cylinder (6) is arranged in each circular cavity, the cylinder (6) is coaxially and fixedly connected to the side wall of the worm wheel (7), a threaded rod (5) is connected to the inner thread of the cylinder (6), and one end, far away from the cylinder (6), of the threaded rod (5) is fixedly connected to the side wall of the mounting seat (9);

the upper end of the transformer body (1) is provided with a mounting groove, the upper end of the worm (8) penetrates through the inner wall of the device cavity and extends to the mounting groove, a coil spring (12) is mounted at one end, located at the mounting groove, of the worm (8), and the free end of the coil spring (12) is fixedly connected to the inner wall of the mounting groove;

the coil spring (12) is made of a memory metal material;

and a low-boiling-point evaporation liquid is arranged in the water storage tank (16), and the low-boiling-point evaporation liquid is dichloromethane.

2. The high-low voltage lead mounting structure of the distribution silicon steel oil-immersed transformer according to claim 1, wherein a guide groove (13) is formed in the inner wall of the circular cavity, a guide block (14) is slidably connected in the guide groove (13), and the guide block (14) is fixedly connected to the side wall of the threaded rod (5).