CN216980308U

CN216980308U - Novel temperature control protection device for dry-type transformer fan

Info

Publication number: CN216980308U
Application number: CN202220277759.4U
Authority: CN
Inventors: 徐俊杰; 姜毅; 吕章根; 姜尔康
Original assignee: Kerun Intelligent Control Co ltd
Current assignee: Kerun Intelligent Control Co ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-07-15
Anticipated expiration: 2032-02-11

Abstract

The utility model relates to a novel dry-type transformer fan temperature control protection device which not only can protect a transformer, but also can protect a fan or even a temperature controller, can improve maintenance efficiency and reduce maintenance cost. The advantages are that: the utility model provides a novel do change fan control by temperature change protection device not only can play the guard action to transformer, fan, temperature controller even, can reduce the cost of overhaul moreover when having improved maintenance efficiency.

Description

Novel temperature control protection device for dry-type transformer fan

Technical Field

The utility model belongs to the technical field of dry-type transformers, and particularly relates to a novel temperature control protection device for a dry-type transformer fan.

Background

The conventional temperature control protection device for the dry-type transformer, such as CN 202339513U, named 'a temperature controller for a dry-type transformer', comprises a power input end, a trip output end, an alarm output end, a fault output end, a door opening alarm input end, a fan output end, a sensor socket, a communication output interface, an RS485A network and 4-20mA current sampling equipment, wherein the RS485 network and the 4-20mA current sampling equipment are connected with the communication output interface through circuits, and the outside of the sensor socket is connected with three temperature sensors through circuits. The power input end is externally connected with an alternating current 220V power supply for the working power supply of the temperature controller. And the tripping output end is a passive normally open contact, and when the temperature of the solenoid is higher than the tripping temperature, the contact is closed and outputs a switching signal to control automatic tripping. The alarm output end is a passive normally open contact, when the temperature of the coil is higher than the alarm temperature, the contact is closed, and a switch signal is output to the remote control cabinet. The fault output end is a passive normally open contact, when the sensor fails or the door is opened for alarming, the contact is closed, and a switch signal is output to a remote fault alarm device. The door opening alarm input end is a passive contact, when the port is short-circuited, the buzzer of the temperature controller gives an alarm, and the fault output end is closed. The disadvantages are that: because of the temperature control protection device of the dry type transformer, a high-pressure side fan loop and a low-pressure side fan loop in the dry type transformer are connected in parallel with the output end of the fan, when the fan fails (such as the fan is burnt due to factors of insulator damage, water leakage and the like), the high-pressure side fan and the low-pressure side fan stop working simultaneously (actually, only one side fan fails), the two groups of fans stop working simultaneously to enable the temperature rise of the dry type transformer to rise rapidly, and meanwhile, when the current is too large, the fan and even a temperature controller are easy to burn out; in addition, in order to shorten the repair time, the fans on both sides are generally replaced together.

SUMMERY OF THE UTILITY MODEL

The design purpose is as follows: for avoiding not enough among the background art, design one kind not only can play the guard action to the transformer, can play the guard action to fan, temperature controller even moreover, can improve maintenance efficiency, reduce the cost of overhaul's a neotype dry change fan control by temperature change protection device simultaneously.

The design scheme is as follows: the design purpose is realized.

1. The dry-type transformer temperature controller is provided with a first fan output end and a second fan output end, the first fan output end is electrically connected with a high-voltage side fan in the dry-type transformer through a conducting wire, and the second fan output end is electrically connected with a low-voltage side fan in the dry-type transformer through a conducting wire. The purpose of this design is: the dry type transformer temperature controller is provided with a first fan output end and a second fan output end, the first fan output end is electrically connected with a high-voltage side fan in the dry type transformer through a conducting wire, the second fan output end is electrically connected with a low-voltage side fan in the dry type transformer through a conducting wire, a high-voltage side fan loop and a low-voltage side fan loop are changed into independent wiring, two wiring terminals on the high-voltage side fan are electrically connected with corresponding wiring terminals on the dry type transformer temperature controller through conducting wires respectively, and the two wiring terminals on the low-voltage side fan are electrically connected with corresponding wiring terminals on the dry type transformer temperature controller through conducting wires respectively.

2. The utility model is characterized in that a fuse is arranged in the output end of the first fan, and a fuse is arranged in the output end of the second fan. The purpose of this design is: the built-in fuse that has of first fan output, the built-in fuse that has of second fan output, the setting of fuse can avoid when the fan breaks down the electric current too big fan burn out in the twinkling of an eye that causes, and the problem that the temperature controller burns out appears even, can reduce loss of property promptly.

3. The shell of the fusible core in the fuse is designed to be a transparent shell, which is the third technical characteristic of the utility model. The purpose of this design is: the shell of the fusible core in the fuse is a transparent shell, and maintenance personnel can judge that one side fan is bad or that both sides fans are bad by observing the fusible core and judge which side fan is bad, so that the fan is replaced by quick and accurate maintenance, time and labor are saved in maintenance, and the maintenance cost can be reduced.

4. The design that the audible and visual alarm is electrically connected with the field alarm output end in the dry-type transformer temperature controller through the conducting wire is the fourth technical characteristic of the utility model. The purpose of this design is: the audible and visual alarm is electrically connected with a field alarm output end in the dry-type transformer temperature controller through a conducting wire, and can give an alarm when the fan fails to work so as to prompt field workers to overhaul.

5. The design that the power supply input end in the dry type transformer temperature controller is provided with the circuit breaker is the fifth technical characteristic of the utility model. The purpose of this design is: a breaker is arranged at the power input end of the dry-type transformer temperature controller and plays a role in protecting the temperature controller.

The technical scheme is as follows: the utility model provides a novel dry change fan control by temperature change protection device, includes dry-type transformer temperature controller and dry-type transformer, be equipped with first fan output and second fan output in the dry-type transformer temperature controller, first fan output passes through the conductor wire and is connected with the high pressure side fan electricity in the dry-type transformer, second fan output passes through the conductor wire and is connected with the low pressure side fan electricity in the dry-type transformer.

Compared with the prior art, the novel temperature control protection device for the dry-type transformer fan not only can protect the transformer, the fan and even the temperature controller, but also can reduce the maintenance cost while improving the maintenance efficiency.

Drawings

Fig. 1 is a schematic diagram of a novel temperature control protection device of a dry-type transformer fan.

The dry-type transformer temperature controller comprises a dry-type transformer temperature controller 100, a power input end 101, a first fan output end 102, a second fan output end 103, a field alarm output end 104, an overtemperature alarm end 105, an overtemperature tripping end 106, an equipment fault end 107, a communication output interface end 108, a high-pressure side fan 200, a low-pressure side fan 300 and a fuse 400.

Detailed Description

Example 1: reference is made to figure 1. The utility model provides a novel dry change fan control by temperature change protection device, includes dry-type transformer temperature controller 100 and dry-type transformer, be equipped with first fan output 102 and second fan output 103 in the dry-type transformer temperature controller 100, first fan output 102 is connected through the conductor wire and the high pressure side fan 200 electricity in the dry-type transformer, second fan output 103 is connected through the conductor wire and the low pressure side fan 300 electricity in the dry-type transformer. Namely, the high-pressure side fan 200 loop and the low-pressure side fan 300 loop are changed into independent connections, and the two connection terminals on the high-pressure side fan 200 are electrically connected with the corresponding connection terminals (i.e., the terminal 3 and the terminal 4) on the dry type transformer temperature controller 100 through conductive wires, respectively, and the two connection terminals on the low-pressure side fan 300 are electrically connected with the corresponding connection terminals (i.e., the terminal 5 and the terminal 6) on the dry type transformer temperature controller 100 through conductive wires, respectively.

The fuse 400 is arranged in the first fan output end 102, and in the using process, when the current of a loop of the high-pressure side fan 200 is overlarge, the fuse 400 arranged in the first fan output end 102 is fused, so that the high-pressure side fan 200 is prevented from being burnt out; the fuse 400 is arranged in the second fan output end 103, and in the using process, when the current of the low-voltage side fan 300 loop is too large, the fuse 400 arranged in the first fan output end 102 is fused, so that the pressure side fan 300 is prevented from being burnt out. The shell of the fusible core in the fuse 400 is a transparent shell, so that a user can see whether the fuse in the fusible core is blown or not at a glance, and the problem of the high-pressure side fan 200 loop or the problem of the low-pressure side fan 300 loop can be found out quickly. The overload protection current of the fuse is 4A.

The dry-type transformer temperature controller also comprises an audible and visual alarm, the audible and visual alarm is electrically connected with a field alarm output end 104 in the dry-type transformer temperature controller through a conducting wire, and the connection mode of the audible and visual alarm and the dry-type transformer temperature controller is the prior art, so the description is omitted here. When the dry-type transformer temperature controller 100 detects that the temperature reaches an alarm value (for example, 80 ℃), the dry-type transformer temperature controller 100 provides alarm information to a background, and meanwhile, the dry-type transformer temperature controller 100 provides sound and light warnings for field workers through an audible and visual alarm; the dry-type transformer temperature controller 100 can control the power switch to trip when the dry-type transformer temperature controller 100 detects that the temperature reaches an alarm value (e.g., 130 ℃).

The power input end 101 of the dry-type transformer temperature controller 100 is provided with a circuit breaker, and the overload protection current of the circuit breaker is 10A. The dry-type transformer temperature controller 100 is further provided with an over-temperature alarm terminal 105, an over-temperature trip terminal 106, an equipment fault terminal 107 and a communication output interface terminal 108. The power input end 101 comprises a terminal 1 and a terminal 2, the terminal 1 and the terminal 2 are a controller working power supply and a ground, the first fan output end 102 comprises a terminal 3 and a terminal 4, the terminal 3 and the terminal 4 are fan relay output contacts (active), the second fan output end 103 comprises a terminal 5 and a terminal 6, the terminal 5 and the terminal 6 are fan relay output contacts (active), the field alarm output end 104 comprises a terminal 7 and a terminal 8, the terminal 7 and the terminal 8 are backup relay output contacts, the over-temperature alarm end 105 comprises a terminal 9 and a terminal 10, the terminal 9 and the terminal 10 are over-temperature alarm relay output contacts, the over-temperature trip end 106 comprises a terminal 11 and a terminal 12, the terminal 11 and the terminal 12 are over-temperature trip relay output contacts, the equipment fault end 107 comprises a terminal 13 and a terminal 14, and the terminal 13 and the terminal 14 are equipment fault and power loss fault output contacts, the communication output interface end 108 comprises a terminal 15 and a terminal 16, and the terminal 15 and the terminal 16 are RS485 communication terminals; the dry-type transformer temperature controller 100 is a conventional one, and therefore will not be further described herein.

It is to be understood that: although the above embodiments have described the design idea of the present invention in more detail, these descriptions are only simple descriptions of the design idea of the present invention, and are not limitations of the design idea of the present invention, and any combination, addition, or modification without departing from the design idea of the present invention falls within the scope of the present invention.

Claims

1. The utility model provides a novel do change fan control by temperature change protection device, includes dry-type transformer temperature controller and dry-type transformer, characterized by: the dry-type transformer temperature controller is provided with a first fan output end and a second fan output end, the first fan output end is electrically connected with a high-voltage side fan in the dry-type transformer through a conducting wire, and the second fan output end is electrically connected with a low-voltage side fan in the dry-type transformer through a conducting wire.

2. The novel temperature control protection device for the dry-type transformer fan as claimed in claim 1, wherein: the built-in fuse that has of first fan output, the built-in fuse that has of second fan output.

3. The novel temperature control protection device for the dry-type transformer fan as claimed in claim 2, wherein: the shell of the fusible core in the fuse is a transparent shell.

4. The novel temperature control protection device for the dry-type transformer fan as claimed in claim 1, wherein: the dry-type transformer temperature controller also comprises an audible and visual alarm which is electrically connected with a field alarm output end in the dry-type transformer temperature controller through a conducting wire.

5. The novel temperature control protection device for the dry-type transformer fan as claimed in claim 1, wherein: and a circuit breaker is arranged at the power input end of the dry-type transformer temperature controller.