CN210535454U

CN210535454U - Transformer protection device

Info

Publication number: CN210535454U
Application number: CN201922100666.5U
Authority: CN
Inventors: 张余
Original assignee: Tianjin Deriber Mechanical And Electrical Equipment Co Ltd
Current assignee: Tianjin Deriber Mechanical And Electrical Equipment Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-05-15
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a transformer protection device, which comprises a control cabinet and a cabinet door, wherein the cabinet door is arranged inside the front end of the control cabinet, the cabinet door is fixedly connected with the control cabinet through a hinge, three wiring terminals are arranged on the outer wall of the upper end of the control cabinet, a wiring protection device is additionally arranged outside the three wiring terminals at the top of the control cabinet of the transformer protection device, the wiring protection device can protect external wires connected with the wiring terminals, and the situation that the connection part of the wiring terminals and the external wires is influenced by external rainwater, dust and the like to generate power failure or power failure and fire is caused is prevented, the wiring protection device can not influence the connection between the external wires and the wiring terminals and can well protect the wiring terminals, and the wiring protection device has good insulating wires and fire resistance simultaneously, thereby greatly reducing the potential safety hazard when in use.

Description

Transformer protection device

Technical Field

The utility model belongs to the technical field of the transformer is relevant, concretely relates to transformer protection device.

Background

The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core (magnetic core), and the transformer has the main functions of: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization (magnetic saturation transformer), and the like, and can be classified into: power transformers and special transformers (electric 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 and the like), circuit symbols are usually T as the beginning of a serial number, such as T01, T201 and the like.

The prior transformer protection device technology has the following problems: the existing transformer protection device needs to be connected with an external electric wire through a wiring terminal when being installed inside a control cabinet and put into use, and the traditional wiring terminal is basically directly sleeved with an edge sleeve at the joint of the traditional wiring terminal and the external electric wire, and the mode of directly sleeving the insulating sleeve easily causes the insufficient protection range of the insulating sleeve, so that the insulating sleeve can have a gap communicated with the external part when the insulating sleeve is used for protecting the wiring terminal and the external electric wire, and thus, the external water vapor is easily introduced into the insulating sleeve, and the insulating terminal is caused to generate short circuit electric leakage or directly cause fire.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer protection device to the mode of putting insulating cover on directly to solve and put forward in the above-mentioned background art causes insulating cover's protection range not comprehensive enough easily, can cause insulating cover can exist when protection binding post and external electric wire with the gap of external intercommunication, causes outside steam to enter into insulating cover inside easily and causes insulating terminal department to produce the short circuit electric leakage or directly can cause the problem on fire like this.

In order to achieve the above object, the utility model provides a following technical scheme: a transformer protection device comprises a control cabinet and a cabinet door, wherein the cabinet door is arranged inside the front end of the control cabinet, the cabinet door is fixedly connected with the control cabinet through a hinge, three wiring terminals are arranged on the outer wall of the upper end of the control cabinet, wiring protection devices are sleeved outside the three wiring terminals, a main circuit breaker is arranged inside the uppermost side of the control cabinet, three grading circuit breakers which are arranged at equal intervals are arranged on the lower side of the main circuit breaker, transformers are arranged right below the three grading circuit breakers, the main circuit breaker and the three grading circuit breakers are electrically connected through electric wires, the three grading circuit breakers are electrically connected with the three transformers through other three electric wires respectively, current transformers are further connected between the three grading circuit breakers and the three transformers respectively, and PT100 thermal resistors are arranged inside the three transformers, all through mounting bracket fixed connection between total circuit breaker, three hierarchical circuit breaker and three transformer and the switch board, be provided with the thread bush on the wiring protection device, the thread bush cup joints at binding post bottom circumference outside, the thread bush outside has cup jointed insulating protective sheath, insulating protective sheath sets up the outside at binding post, be connected with insulating sealed the pad on the insulating protective sheath bottom outer wall, be connected with high temperature resistant acupuncture felt on the insulating protective sheath inner wall, the inside vertical inlet wire that is provided with of insulating protective sheath upper end outer wall, be connected with the insulating shrink of high elasticity on the insulating protective sheath upper end inner wall in the inlet wire outside, the insulating shrink of high elasticity overlaps and insulating protective sheath and passes through adhesive fixed connection.

Preferably, the cabinet door is close to and is provided with the status light on the upside front end outer wall, the status light downside is provided with ampere meter, voltmeter and thermometer, ampere meter, voltmeter and thermometer are arranged from left right side equidistance, ampere meter, voltmeter and thermometer downside are provided with the controller, be provided with integrated seat on the cabinet door rear end outer wall, ampere meter, voltmeter, thermometer and controller all pass through electric wire and integrated seat electric connection, integrated seat passes through electric wire and total circuit breaker electric connection.

Preferably, the cabinet door is close to the inside of downside and still is provided with two sets of heat dissipation strip holes, the switch board passes through heat dissipation strip hole and outside intercommunication.

Preferably, the status light can emit three light source colors of red, yellow and green when working, the status light is in a fault state when flickering red light, the status light is in a working state when yellow light is normally on, and the status light is in a non-working state when green light is normally on.

Preferably, the control cabinet is of a rectangular frame structure, the outer wall of the front end of the control cabinet and the outer wall of the front end of the closed cabinet door are kept flush, and antirust and anticorrosive paint is coated on the outer walls of the control cabinet and the cabinet door.

Preferably, the insulating sealing gasket is of a circular ring structure, the insulating sealing gasket is fixedly connected with the insulating protective sleeve through a bonding agent, the outer wall of the bottom of the insulating sealing gasket is smooth, and the outer wall of the bottom of the insulating sealing gasket can be completely attached to the outer wall of the upper end of the control cabinet.

Compared with the prior art, the utility model provides a transformer protection device possesses following beneficial effect:

1. the utility model adds a wiring protection device outside the three wiring terminals on the top of the control cabinet of the transformer protection device, the wiring protection device can protect the external electric wires connected on the wiring terminals, and prevent the connection between the wiring terminals and the external electric wires from being affected by external rain dust and the like to generate power failure or power failure and fire, the wiring protection device can not affect the connection between the external electric wires and the wiring terminals and can play good protection role on the wiring terminals, and the wiring protection device has good insulating wire and fire resistance simultaneously, thereby greatly reducing the potential safety hazard when in use, the external electric wires firstly need to penetrate into the high-elasticity insulating shrink sleeve through the wire inlet on the insulating protective sleeve, and then pass through the high-elasticity insulating shrink sleeve, then the electric wire penetrating into the high-elasticity insulating shrinkage sleeve is normally connected and fixed with the incoming wire of the wiring terminal, after the wire is connected, only the insulating protective sleeve needs to slide down to enable the bottom of the insulating protective sleeve to be sleeved on the thread sleeve outside the lowest end of the wiring terminal, then the insulating protective sleeve is screwed down through the thread action, the insulating sealing gasket at the bottom of the insulating protective sleeve is tightly attached to the outer wall of the upper end of the control cabinet after the insulating protective sleeve is screwed down, and meanwhile, the high-elasticity insulating shrinkage sleeve also shrinks inwards to be firmly tightened outside the insulating sheath of the electric wire, so that the inside of the insulating protective sleeve is in a sealing state, thereby preventing external dust and water from entering the inside of the insulating protective sleeve to damage the wiring terminal and the electric wire, and preventing the insulating protective sleeve in the sealing state from touching the wiring terminal by mistake to cause electric shock, thereby increasing the safety of use;

2. the utility model discloses an it has PT100 thermal resistance to increase on the inside transformer of switch board, PT100 thermal resistance specifically installs at transformer coil, inside iron core and the transformer case, and dispose current transformer monitoring low pressure side current in the transformer low pressure side, it utilizes current transducer to change temperature signal and current signal into 4~20ma analog signal, then with signal input programmable controller conversion module, convert into digital signal, set for temperature and current value through programmable controller setting interface, programmable controller sends an alarm signal when the sample value exceeds the setting value, this signal acts on the circuit breaker of transformer high low pressure side, in order to play protect function.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of an external three-dimensional structure of a transformer protection device according to the present invention;

fig. 2 is a schematic view of a front plan structure of a transformer protection device provided by the present invention;

fig. 3 is a schematic view of the internal cross-sectional structure of the wiring protection device provided by the present invention;

in the figure: 1. a control cabinet; 2. a heat dissipating bar hole; 3. a cabinet door; 4. a controller; 5. an ammeter; 6. a voltmeter; 7. a status light; 8. a wiring terminal; 9. a thermometer; 10. a wiring protection device; 11. a hinge; 12. an integrated base; 13. a mounting frame; 14. a transformer; 15. PT100 thermal resistance; 16. a current transformer; 17. a grading circuit breaker; 18. a main circuit breaker; 19. a threaded sleeve; 20. an insulating gasket; 21. an insulating protective sleeve; 22. high temperature resistant needled felt; 23. a high-elasticity insulating shrinkage sleeve; 24. and (4) a wire inlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a transformer protection device comprises a control cabinet 1 and a cabinet door 3, wherein the cabinet door 3 is arranged inside the front end of the control cabinet 1, the cabinet door 3 is fixedly connected with the control cabinet 1 through a hinge 11, the control cabinet 1 is of a rectangular frame structure, the outer wall of the front end of the control cabinet 1 and the outer wall of the front end of the closed cabinet door 3 are kept flush, antirust and anticorrosive paint is coated on the outer walls of the control cabinet 1 and the cabinet door 3, the antirust and anticorrosive paint can have good antirust and anticorrosive effects in consideration of the long-term use of the whole control cabinet 1, so that the durability of the control cabinet 1 is improved, three wiring terminals 8 are arranged on the outer wall of the upper end of the control cabinet 1, wiring protection devices 10 are sleeved outside the three wiring terminals 8, a main circuit breaker 18 is arranged inside the uppermost side of the control cabinet 1, three grading circuit breakers 17 which are arranged at equal intervals are arranged on the lower side of the main, the main circuit breaker 18 is electrically connected with the three grading circuit breakers 17 through electric wires, the three grading circuit breakers 17 are electrically connected with the three transformers 14 through other three electric wires, current transformers 16 are connected between the three grading circuit breakers 17 and the three transformers 14, PT100 thermal resistors 15 are arranged inside the three transformers 14, the main circuit breaker 18, the three grading circuit breakers 17 and the three transformers 14 are fixedly connected with the control cabinet 1 through mounting frames 13, a state lamp 7 is arranged on the outer wall of the front end of the upper side of the cabinet door 3, the state lamp 7 can emit three light source colors of red, yellow and green when working, the state lamp 7 can flash red light to show a fault state, the state lamp 7 can flash yellow light to show a working state when the yellow light is normally on, the state lamp 7 can flash green light to show an electrified non-working state when the green light is normally on, an ammeter 5, a voltmeter 6 and a thermometer 9 are, the ammeter 5, the voltmeter 6 and the thermometer 9 are arranged from left to right at equal intervals, the controller 4 is arranged at the lower sides of the ammeter 5, the voltmeter 6 and the thermometer 9, an integrated base 12 is arranged on the outer wall of the rear end of a cabinet door 3, the ammeter 5, the voltmeter 6, the thermometer 9 and the controller 4 are electrically connected with the integrated base 12 through wires, the integrated base 12 is electrically connected with a main breaker 18 through wires, two groups of radiating strip holes 2 are further arranged in the cabinet door 3 close to the lower side, and the control cabinet 1 is communicated with the outside through the radiating strip holes 2, wherein the current transformer 16 can monitor the current at the low voltage side, a current transmitter is used for converting a temperature signal and a current signal into 4-20 ma analog signals, then the signals are input into a conversion module of the programmable controller 4 and are converted into digital signals, the temperature and the current value are set through a setting interface of the programmable controller 4, when a sampling value is exceeded, the programmable controller 4, this signal is applied to the circuit breaker on the high and low voltage side of the transformer 14 for protection.

A transformer protector, a thread bushing 19 is arranged on a wiring protector 10, the thread bushing 19 is sleeved outside the circumference of the lowest end of a wiring terminal 8, an insulating protective sleeve 21 is sleeved outside the thread bushing 19, the insulating protective sleeve 21 is arranged outside the wiring terminal 8, an insulating sealing gasket 20 is connected on the outer wall of the lowest end of the insulating protective sleeve 21, a high-temperature resistant acupuncture felt 22 is connected on the inner wall of the insulating protective sleeve 21, a vertical wire inlet 24 is arranged inside the outer wall of the upper end of the insulating protective sleeve 21, a high-elasticity insulating shrink sleeve 23 is connected on the inner wall of the upper end of the insulating protective sleeve 21 outside the wire inlet 24, the high-elasticity insulating shrink sleeve 23 and the insulating protective sleeve 21 are fixedly connected through an adhesive, when the novel wiring protector 10 is used, an external electric wire firstly needs to penetrate into the high-elasticity insulating shrink sleeve 23 through the wire inlet 24 on the insulating protective sleeve 21, then the wire penetrating into the high-elasticity insulation shrinkage sleeve 23 is normally connected and fixed with the wire inlet of the wiring terminal 8, after the wire is connected, only the insulation protection sleeve 21 needs to slide down to enable the bottom of the insulation protection sleeve 21 to be sleeved on the thread sleeve 19 outside the lowest end of the wiring terminal 8, then the insulation protection sleeve 21 is screwed through the thread action, the insulation sealing gasket 20 at the bottom of the insulation protection sleeve 21 is tightly attached to the outer wall of the upper end of the control cabinet 1 after the insulation protection sleeve 21 is screwed, and meanwhile, the high-elasticity insulation shrinkage sleeve 23 also shrinks inwards to be firmly tightened outside the insulation sheath of the wire, so that the inside of the insulation protection sleeve 21 is in a sealing state, external dust and water can be prevented from entering the inside of the insulation protection sleeve 21 to damage the wiring terminal 8 and the wire, and the insulation protection sleeve 21 in the sealing state can also prevent the electric shock caused by the fact that a finger of a user touches, insulating sealing gasket 20 is the ring column structure, insulating sealing gasket 20 and insulating protective sheath 21 pass through adhesive fixed connection, the smooth outer wall of insulating sealing gasket 20's bottom outer wall, laminating that insulating sealing gasket 20's bottom outer wall can be complete is on 1 upper end outer wall of switch board, can make insulating protective sheath 21 be in encapsulated situation between its bottom and 1 top outer wall of switch board after the installation like this, prevents that steam from getting into.

The utility model discloses a theory of operation and use flow: after the utility model is installed, the PT100 thermal resistor 15 is firstly installed in the transformer 14 coil, the iron core and the transformer 14 shell when being assembled and used, then the current transformer 16 is arranged at the low-voltage side of the transformer 14 to monitor the low-voltage side current, the current transformer is used to convert the temperature signal and the current signal into 4-20 ma analog signals, then the signals are input into the conversion module of the programmable controller 4 to be converted into digital signals, the temperature and the current value are set through the setting interface of the programmable controller 4, when the sampling value exceeds the setting value, the programmable controller 4 sends out an alarm signal, the signal acts on the circuit breaker at the high-low voltage side of the transformer 14, then the transformer 14 is connected with the grading circuit breaker 17 at the upper side through the electric wire, and the current transformer 16 is installed and connected between the transformer 14 and the grading circuit breaker 17, and finally, the grading circuit breaker 17 is connected with the main circuit breaker 18 through an electric wire, then the whole control cabinet 1 is required to be installed on a position required to be installed, an external electric wire is connected with the wiring terminal 8 at the top of the control cabinet 1 to achieve the purpose of electrifying, and finally, the cabinet door 3 is required to be closed, and the cabinet door 3 and the control cabinet 1 are required to be locked to be normally put into use.

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 protection device, includes switch board (1) and cabinet door (3), its characterized in that: the cabinet door (3) is installed inside the front end of the control cabinet (1), the cabinet door (3) and the control cabinet (1) are fixedly connected through a hinge (11), three wiring terminals (8) are arranged on the outer wall of the upper end of the control cabinet (1), the wiring protection device (10) is sleeved outside the three wiring terminals (8), a main circuit breaker (18) is arranged inside the uppermost side of the control cabinet (1), three grading circuit breakers (17) which are arranged at equal intervals are arranged on the lower side of the main circuit breaker (18), transformers (14) are arranged on the lower sides of the grading circuit breakers (17), the main circuit breaker (18) and the three grading circuit breakers (17) are electrically connected through electric wires, the three grading circuit breakers (17) and the three transformers (14) are electrically connected through other three electric wires respectively, and current transformers (16) are further connected between the grading circuit breakers (17) and the three transformers (14) respectively, it is three transformer (14) inside all is provided with PT100 thermal resistance (15), all through mounting bracket (13) fixed connection between total circuit breaker (18), three hierarchical circuit breaker (17) and three transformer (14) and switch board (1), be provided with thread bush (19) on wiring protection device (10), thread bush (19) cup joint outside binding post (8) lower extreme circumference, insulating protective sheath (21) have been cup jointed to thread bush (19) outside, insulating protective sheath (21) set up the outside at binding post (8), be connected with insulating sealing gasket (20) on insulating protective sheath (21) lower extreme outer wall, be connected with high temperature resistant acupuncture felt (22) on insulating protective sheath (21) inner wall, inside vertical inlet wire (24) that is provided with of insulating protective sheath (21) upper end outer wall, be connected with high elasticity insulating shrink cover (21) upper end inner wall in the inlet wire (24) outside 23) The high-elasticity insulating shrinkage sleeve (23) and the insulating protective sleeve (21) are fixedly connected through an adhesive.

2. A transformer protection device according to claim 1, characterized in that: cabinet door (3) are close to and are provided with status light (7) on the upside front end outer wall, status light (7) downside is provided with ampere meter (5), voltmeter (6) and thermometer (9), ampere meter (5), voltmeter (6) and thermometer (9) are arranged from left right side equidistance, ampere meter (5), voltmeter (6) and thermometer (9) downside are provided with controller (4), be provided with integrated seat (12) on cabinet door (3) rear end outer wall, ampere meter (5), voltmeter (6), thermometer (9) and controller (4) all are through electric wire and integrated seat (12) electric connection, integrated seat (12) are through electric wire and total circuit breaker (18) electric connection.

3. A transformer protection device according to claim 1, characterized in that: the cabinet door (3) is close to the inside of the lower side and is further provided with two groups of heat dissipation strip holes (2), and the control cabinet (1) is communicated with the outside through the heat dissipation strip holes (2).

4. A transformer protection device according to claim 2, characterized in that: the LED lamp is characterized in that the status lamp (7) can emit red, yellow and green light source colors when working, the status lamp (7) is in a fault state when flickering red light, the status lamp (7) is in a working state when yellow light is normally on, and the status lamp (7) is in a power-on non-working state when green light is normally on.

5. A transformer protection device according to claim 1, characterized in that: the control cabinet (1) is of a rectangular frame structure, the outer wall of the front end of the control cabinet (1) and the outer wall of the front end of the closed cabinet door (3) are parallel and level, and antirust and anticorrosive paint is coated on the outer walls of the control cabinet (1) and the cabinet door (3).

6. A transformer protection device according to claim 1, characterized in that: insulating sealed pad (20) are the ring structure, insulating sealed pad (20) and insulating protective sheath (21) pass through adhesive fixed connection, the smooth outer wall of bottom outer wall of insulating sealed pad (20), laminating that the bottom outer wall of insulating sealed pad (20) can be complete is on switch board (1) upper end outer wall.