CN113707435A

CN113707435A - Automatic protection device for transformer

Info

Publication number: CN113707435A
Application number: CN202111252460.XA
Authority: CN
Inventors: 吴春飞
Original assignee: Nantong Langdi Machinery Technology Co ltd
Current assignee: Nantong Langdi Machinery Technology Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2021-11-26
Anticipated expiration: 2041-10-27
Also published as: CN113707435B

Abstract

The invention discloses an automatic protection device of a transformer, which comprises a bottom plate, wherein the top of the bottom plate is provided with the transformer, a top binding post of the transformer is connected with two insulated wires for power transmission, mounting bars are fixed at the tops of the bottom plate close to two sides, the outer walls of the two mounting bars are respectively provided with a sliding groove, lifting blocks are vertically and slidably mounted in the two sliding grooves, the tops of the two lifting blocks are respectively connected with the inner walls of the two sliding grooves by springs, the bottoms of the two lifting blocks are respectively provided with a cutting knife, and the tops of the bottom plate below the two cutting knives are respectively provided with a groove for the cutting knife to pass through. According to the transformer protection device, through the matching of the structures, when the transformer meets an emergency situation of fire, the transformer can be subjected to power-off protection at the first time, so that the effect of immediately processing and protecting the transformer is achieved, secondary accidents are prevented from being caused, and the protection performance of the transformer is further improved.

Description

Automatic protection device for transformer

Technical Field

The invention relates to the technical field of transformer protection, in particular to an automatic protection device for a transformer.

Background

A power transformer is a stationary electrical device that is used to transform an ac voltage (current) of a certain value into another voltage (current) of the same frequency or different values.

Although the existing transformer is connected with the transformer by introducing the insulated conducting wire, the transformer may be damaged or even burnt and ignited due to aging or short circuit of the insulating material at the joint of the transformer and the conducting wire along with long-time use, and if the transformer cannot be timely treated, great potential safety hazard is caused, so that accidents are caused.

Disclosure of Invention

The invention aims to provide an automatic transformer protection device, which can perform power-off protection on a transformer in the first time when the transformer meets an emergency situation of fire, achieves the effect of immediately processing and protecting the transformer, prevents the transformer from causing secondary accidents, further improves the protection performance of the transformer and solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a transformer automatic safety device, includes the bottom plate, the transformer is installed at the top of bottom plate, the top terminal connection of transformer has two insulated wire that are used for transmission of electricity, the top that the bottom plate is close to both sides all is fixed with the mounting bar, two the spout has all been seted up to the outer wall of mounting bar, and equal vertical slidable mounting has the lifter, two in two spouts the top of lifter has the spring, two with the inner wall connection of two spouts respectively the cutting knife is all installed to the bottom of lifter, is located two the groove that can supply the cutting knife to pass is all seted up at the bottom plate top of cutting knife below, two insulated wire is located two cutting knives respectively under.

The outer walls of the two mounting bars are respectively fixed with a locking assembly used for limiting the lifting blocks, the top of the bottom plate is further provided with a temperature sensor used for controlling the two locking assemblies, and when the temperature sensor senses that the temperature of the joint of the transformer and the insulated wire reaches a preset value, the temperature sensor can control the two locking assemblies to unlock the two lifting blocks through electric signals.

Preferably, the outer wall of both sides is rotated through the round pin axle around the bottom plate and is installed two protection casings, two the longitudinal section of protection casing all is the quarter circle setting, the top of bottom plate still is provided with and is used for making two protection casing pivoted drive assembly.

Preferably, the transmission assembly includes the lifter plate, the top of bottom plate is seted up porosely, and downthehole vertical slidable mounting has the lifter, the lifter plate is fixed in the bottom of lifter, the top of lifter plate offsets with the flat bed face of two protection casings respectively, is located the equal horizontal slidable mounting in bottom plate top of lifter both sides has the slider, two the outer wall of slider all articulates with the outer wall that the lifter is close to the top has the second connecting rod, two the slider respectively with two lifters between articulated first connecting rod.

Preferably, two the inner wall that the protection casing is close to the centre all is fixed with the flourishing bag that has held the dry powder, is located two the bottom plate top of holding the bag below all is fixed with the riser, two the top of riser all is fixed with the blade that is used for the cutting to hold the bag, temperature sensor fixes the outer wall that the riser is close to the top.

Preferably, the two protective covers are close to the two inner walls of the containing bags are fixed with a plurality of vibration pieces, the outer walls of the vertical plates close to the vibration pieces are rotatably provided with knocking rods, torsional springs are arranged between the knocking rods and the vertical plates, and when the vibration pieces rotate, the knocking rods can knock the vibration pieces.

Preferably, two the arc outer wall of protection casing all is fixed with contact switch, one of them buzzer is installed to the outer wall of protection casing, and when two can start through signal of telecommunication control buzzer when contact.

Preferably, the side walls of the two protective covers are jointly fixed with fan-shaped air bags, the fan-shaped air bags are filled with inert gas, and the outer walls of the fan-shaped air bags, which are close to the transformer, are communicated with an exhaust pipe capable of discharging air in a single direction.

Preferably, the outer walls of the two sliding blocks are respectively fixed with a buckle, and the two insulated wires are respectively clamped in the two buckles.

Preferably, both the protective covers are made of barrier explosion-proof materials.

Compared with the prior art, the invention has the following beneficial effects:

first, through the cooperation between the structures, when the transformer meets an emergency situation of fire, the transformer can be subjected to power-off protection at the first time, so that the effect of immediately processing and protecting the transformer is achieved, secondary accidents are prevented from being caused, and the protection performance of the transformer is further improved.

The transformer is covered by the two protective covers through the matching of the structures, so that the effects of isolating oxygen and retarding flame are achieved, the explosion-proof effect is achieved, and potential safety hazards are reduced.

Through the matching of the structures, when the two protective covers are closed in a rotating mode, dry powder is sprayed to the wiring position of the transformer, the fire extinguishing effect is achieved, surface flames are extinguished, potential safety hazards are reduced, and the protection performance of the transformer is improved.

Drawings

FIG. 1 is a front isometric view of the present invention;

FIG. 2 is a front side cross-sectional perspective view of the present invention;

FIG. 3 is a front rear side cross-sectional perspective view of the present invention;

fig. 4 is a rear view structural diagram of the present invention.

In the figure: 1. a base plate; 2. a protective cover; 3. a transformer; 4. a temperature sensor; 5. a vertical plate; 6. a locking assembly; 7. mounting a bar; 8. a contact switch; 9. a spring; 10. a lifting block; 11. an insulated wire; 12. a buzzer; 13. a lifting rod; 14. a lifting plate; 15. a containing bag; 16. a blade; 17. a cutting knife; 18. a first link; 19. a slider; 20. a second link; 21. a vibration sheet; 22. a knock bar; 23. a fan-shaped air bag; 24. and (4) exhausting the gas.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: the utility model provides an automatic protection device of transformer, comprising a base plate 1, transformer 3 is installed at the top of bottom plate 1, transformer 3's top terminal connection has two insulated wire 11 that are used for transmitting electricity, bottom plate 1 all is fixed with mounting bar 7 near the top of both sides, the spout has all been seted up to the outer wall of two mounting bars 7, and equal vertical slidable mounting has elevator 10 in two spouts, there is spring 9 at the top of two elevator 10 with the inner wall connection of two spouts respectively, cutting knife 17 is all installed to the bottom of two elevator 10, the groove that can supply cutting knife 17 to pass is all seted up at bottom plate 1 top that is located two cutting knife 17 below, two insulated wire 11 are located two cutting knife 17 respectively under.

The outer walls of the two mounting bars 7 are respectively fixed with a locking assembly 6 used for limiting the lifting block 10, the top of the bottom plate 1 is also provided with a temperature sensor 4 used for controlling the two locking assemblies 6, and when the temperature sensor 4 senses that the temperature of the joint of the transformer 3 and the insulated wire 11 reaches a preset value, the temperature sensor 4 can control the two locking assemblies 6 to unlock the two lifting blocks 10 through electric signals.

When the junction of insulated wire 11 and transformer 3 breaks down because ageing or short circuit, the temperature of the junction of insulated wire 11 and transformer 3 can rise this moment and even catch fire, when temperature sensor 4 senses the temperature and reachs the default, temperature sensor 4 can remove the locking of two elevator blocks 10 through two locking Assembly 6 of signal of telecommunication control this moment, then can drive two elevator blocks 10 and slide downwards under the spring action of spring 9, drive cutting knife 17 and remove downwards together simultaneously, thereby cut off two insulated wire 11, the very first time carries out power-off protection to transformer 3, reached and to have handled the effect of protection immediately to it, prevent that it from causing the secondary accident, further improved the protective properties to transformer 3.

Further, the outer wall of both sides is installed two protection casings 2 around the bottom plate 1 through the round pin rotation, and the longitudinal section of two protection casings 2 all is the quarter circle setting, and the top of bottom plate 1 still is provided with and is used for making two protection casings 2 pivoted drive assembly.

When the cutting knife 17 cuts off two insulated wires 11, make two protection casings 2 rotate and be closed through the drive assembly, can cover transformer 3 inside it to can play the effect of certain isolated oxygen, and then play fire-retardant effect.

Further, transmission assembly includes lifter plate 14, the top of bottom plate 1 is seted up porosely, and downthehole vertical slidable mounting has lifter 13, lifter plate 14 is fixed in lifter 13's bottom, lifter plate 14's top offsets with the flat plane of two protection casings 2 respectively, the equal horizontal slidable mounting in bottom plate 1 top that is located lifter 13 both sides has slider 19, two sliders 19's outer wall all with lifter 13 be close to the outer wall on top articulated have second connecting rod 20, two sliders 19 respectively with two lifters 10 between articulated have first connecting rod 18.

When the two cutting knives 17 move downwards together, the two sliding blocks 19 can slide relatively under the connecting action of the two first connecting rods 18, then the lifting rods 13 can be driven to slide upwards under the connecting action of the two second connecting rods 20, then the lifting plates 14 are driven to move upwards and rotate together against the two protective covers 2 until the flat bottom surfaces of the two protective covers 2 are in the horizontal state of the same straight line, and at the moment, the two protective covers 2 rotate and close.

Further, the inner walls of the two protection covers 2 close to the middle are all fixed with containing bags 15 containing dry powder, the tops of the bottom plates 1 located below the two containing bags 15 are all fixed with vertical plates 5, the tops of the two vertical plates 5 are all fixed with blades 16 used for cutting the containing bags 15, and the temperature sensors 4 are fixed on the outer walls of the vertical plates 5 close to the tops.

When two protection casings 2 rotate, hold bag 15 and also can rotate along with protection casing 2, blade 16 can cut the bag 15 that will hold this moment, spill its inside dry powder, and the terminal department that transformer 3 can be spilt to dry powder under inertial effect, can put out the flame on transformer 3 surface like this, thereby play the effect of putting out a fire, and fix temperature sensor 4 at the outer wall that riser 5 is close to the top, can make temperature sensor 4 response temperature more timely and accurate, can acquire the change of temperature the very first time.

Further, two protection casings 2 are close to two inner walls that hold bag 15 and all are fixed with a plurality of vibrations pieces 21, and two risers 5 are close to the outer wall of vibrations piece 21 and all rotate and install and strike pole 22, strike and be provided with the torsional spring between pole 22 and the riser 5, and when vibrations piece 21 rotated, strike pole 22 and can strike vibrations piece 21.

The vibrating piece 21 can be continuously pulled by the knocking rod 22 when the two protective covers 2 rotate, so that the two protective covers knock the vibrating piece, the two protective covers vibrate slightly, dry powder can be better sprinkled, the dry powder can be sprinkled more sufficiently, and the fire extinguishing effect can be further improved.

Further, contact switches 8 are fixed on the arc-shaped outer walls of the two protective covers 2, a buzzer 12 is installed on the outer wall of one of the protective covers 2, and the buzzer 12 is controlled to be started through an electric signal when the two contact switches 8 are in contact.

When two protection casings 2 rotate and close, two contact switches 8 can also contact at this moment, then start through signal of telecommunication control bee calling organ 12, send out the police dispatch newspaper, play the effect of warning to people nearby, reduce the potential safety hazard.

Furthermore, fan-shaped air bags 23 are jointly fixed on the side walls of the two protective covers 2, inert gas is filled in the fan-shaped air bags 23, and exhaust pipes 24 capable of discharging air in a single direction are communicated with the outer walls, close to the transformer 3, of the fan-shaped air bags 23.

When two protection casings 2 rotate closed, still can extrude fan-shaped gasbag 23, extrude the department of starting a fire of transformer 3 with the inert gas in fan-shaped gasbag 23 through blast pipe 24, can separate certain oxygen to play fire-retardant effect, and blast pipe 24 can also blow a part of dry powder to the fracture department of two insulated wire 11, play certain insulating effect to the fracture.

Furthermore, the outer walls of the two sliding blocks 19 are fixed with buckles, and the two insulated wires 11 are respectively clamped in the two buckles.

Through the fixed action of buckle, so can drive two insulated wire 11 and remove together during two slider 19 relative movement, can make insulated wire 11 straighten on the one hand, prevent that cutting knife 17 from can not cutting, on the other hand, can also play the effect of dragging to insulated wire 11, make things convenient for cutting knife 17 to cut off insulated wire 11, can also make the port of the insulated wire 11 who cuts off keep away from each other after cutting off moreover, prevent to cut off the back and cross the danger that and then produce electric arc once more and cause to catch fire and switch on again.

Further, both the two protective covers 2 are made of barrier explosion-proof materials.

If the transformer 3 is oil-immersed, when the dry powder puts out the flame on surface, the inside still can be on fire, and the explosion then can take place on fire, covers it through two protection casings 2 to two protection casings 2 adopt separation explosion-proof material, can also play certain explosion-proof effect, have improved holistic security performance.

The working principle is as follows: when the automatic protection device for the transformer is used, when the joint of the insulated conducting wire 11 and the transformer 3 is aged or short-circuited to break down, the temperature of the joint of the insulated conducting wire 11 and the transformer 3 can rise or even catch fire, when the temperature sensor 4 senses that the temperature reaches a preset value, the temperature sensor 4 controls the two locking components 6 to unlock the two lifting blocks 10 through electric signals, then the two lifting blocks 10 are driven to slide downwards under the elastic action of the spring 9, the cutting knife 17 is driven to move downwards together, the two sliding blocks 19 can slide relatively under the connecting action of the two first connecting rods 18, the two sliding blocks 19 are fixed with the insulated conducting wire 11 through the buckles, the two insulating conducting wires 11 can be driven to move together by the two sliding blocks 19, on one hand, the insulated conducting wire 11 can be stretched to prevent the cutting knife 17 from cutting, on the other hand, can also play the effect of dragging to insulated conductor 11, make things convenient for cutting knife 17 to cut off insulated conductor 11, can also make the port of the insulated conductor 11 who cuts off keep away from each other after cutting off moreover, prevent to cut off the back and cross and then produce electric arc once more and cause the danger of firing a fire and electrifying once more, can in time handle it like this when short circuit or firing a fire, further improved the guard action to transformer 3.

When the two sliding blocks 19 move relatively, the lifting rod 13 is driven to slide upwards under the connecting action of the two second connecting rods 20, then the lifting plate 14 is driven to move upwards and push against the two protective covers 2 to rotate together, when the two protective covers 2 rotate, the containing bag 15 also rotates along with the protective covers 2, at the moment, the blade 16 cuts the containing bag 15 to spill dry powder in the containing bag, and the dry powder can be sprinkled to the wiring terminals of the transformer 3 under the action of inertia, so that flame on the surface of the transformer 3 can be extinguished, and the fire extinguishing effect is achieved.

Then two protection casings 2 are closed together, cover transformer 3 inside, play the effect of certain isolated oxygen to play fire-retardant effect.

Meanwhile, when the two protective covers 2 are closed, the two contact switches 8 can be in contact with each other and control the buzzer 12 to be started through an electric signal, an alarm is given out, people nearby are reminded of leaving, and therefore potential safety hazards are further reduced.

The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a transformer automatic safety device, includes bottom plate (1), transformer (3) are installed at the top of bottom plate (1), the top terminal connection of transformer (3) has two insulated wire (11) that are used for transmission of electricity, its characterized in that: mounting strips (7) are fixed on the top parts of the bottom plate (1) close to the two sides, sliding grooves are formed in the outer walls of the two mounting strips (7), lifting blocks (10) are vertically and slidably mounted in the two sliding grooves, springs (9) are connected to the top parts of the two lifting blocks (10) and the inner walls of the two sliding grooves respectively, cutting knives (17) are mounted at the bottoms of the two lifting blocks (10), grooves for the cutting knives (17) to pass through are formed in the top parts of the bottom plate (1) below the two cutting knives (17), and the two insulated wires (11) are located under the two cutting knives (17) respectively;

the outer walls of the two mounting bars (7) are respectively fixed with a locking assembly (6) used for limiting the lifting blocks (10), the top of the bottom plate (1) is also provided with a temperature sensor (4) used for controlling the two locking assemblies (6), and when the temperature sensor (4) senses that the temperature of the joint of the transformer (3) and the insulated wire (11) reaches a preset value, the temperature sensor (4) can control the two locking assemblies (6) through electric signals to unlock the two lifting blocks (10);

the outer walls of the front side and the rear side of the bottom plate (1) are rotatably provided with two protective covers (2) through pin shafts, the longitudinal sections of the two protective covers (2) are arranged in a quarter circle, and the top of the bottom plate (1) is also provided with a transmission assembly for enabling the two protective covers (2) to rotate;

the transmission assembly comprises a lifting plate (14), the top of the bottom plate (1) is provided with a hole, a lifting rod (13) is vertically and slidably mounted in the hole, the lifting plate (14) is fixed at the bottom end of the lifting rod (13), the top of the lifting plate (14) is respectively abutted against the flat bottom surfaces of the two protective covers (2), the tops of the bottom plates (1) on the two sides of the lifting rod (13) are respectively and horizontally and slidably mounted with a sliding block (19), the outer walls of the two sliding blocks (19) are respectively hinged with the outer wall, close to the top end, of the lifting rod (13) through a second connecting rod (20), and a first connecting rod (18) is respectively hinged between the two sliding blocks (19) and the two lifting blocks (10);

the inner walls of the two protective covers (2) close to the middle are respectively fixed with a containing bag (15) for containing dry powder, the tops of the bottom plates (1) positioned below the two containing bags (15) are respectively fixed with a vertical plate (5), the tops of the two vertical plates (5) are respectively fixed with a blade (16) for cutting the containing bags (15), and the temperature sensor (4) is fixed on the outer wall of the vertical plate (5) close to the tops;

the outer walls of the two sliding blocks (19) are respectively fixed with a buckle, and the two insulated wires (11) are respectively clamped in the two buckles.

2. The automatic transformer protection device of claim 1, wherein: two protection casing (2) are close to two the inner wall that holds bag (15) all is fixed with a plurality of vibrations piece (21), two the riser (5) are close to the outer wall of vibrations piece (21) and all rotate and install and strike pole (22), strike and be provided with the torsional spring between pole (22) and riser (5), work as when vibrations piece (21) rotate, strike pole (22) and can strike vibrations piece (21).

3. The automatic transformer protection device of claim 1, wherein: two arc outer wall of protection casing (2) all is fixed with contact switch (8), one of them bee calling organ (12) are installed to the outer wall of protection casing (2), and two can start through signal of telecommunication control bee calling organ (12) when contact switch (8) contact.

4. The automatic transformer protection device of claim 1, wherein: the side walls of the two protective covers (2) are jointly fixed with fan-shaped air bags (23), the fan-shaped air bags (23) are filled with inert gas, and the outer walls of the fan-shaped air bags (23) close to the transformer (3) are communicated with an exhaust pipe (24) capable of discharging air in a single direction.

5. The automatic transformer protection device of claim 1, wherein: and the two protective covers (2) are made of barrier explosion-proof materials.