Transformer with winding on-line temperature measuring mechanism

Abstract

The utility model relates to the technical field of small household appliances, in particular to a transformer with a winding on-line temperature measuring mechanism, which comprises a base and a three-phase winding, the three-phase winding is assembled at the top of the base, taps are respectively arranged at the three-phase winding, a top seat is assembled at the top end of the three-phase winding, a group of temperature sensors are respectively assembled outside the three-phase winding, and the temperature sensors are respectively connected with the three-phase winding. And a controller is mounted on the right side of the top seat. According to the transformer with the winding on-line temperature measuring mechanism, the temperature sensors, the three-phase windings, the indicator lamp, the PCB and the buzzer are arranged, a set of temperature sensors is installed at each set of three-phase windings, the temperature of each set of three-phase windings can be better detected through shunt temperature control, damage caused by winding overheating is effectively prevented, and the service life of the transformer is prolonged. The service life of the transformer is prolonged, the operation safety of the transformer is improved, the maintenance and replacement cost is reduced, and the problem that a traditional transformer cannot monitor the temperature of each winding in real time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliances, and particularly relates to a transformer with an on-line temperature measuring mechanism for windings. Background Technique

[0002] The transformer is a key component in small household appliances, used for voltage conversion and power transmission to ensure that the equipment operates under stable voltage and current. The three-phase winding is the core part of the transformer, responsible for converting the electrical energy of the primary coil into the electrical energy of the secondary coil through electromagnetic induction, thereby realizing the rise and fall of voltage.

[0003] At present, the existing small household appliance transformers on the market cannot measure the temperature of the three-phase windings separately, resulting in the inability to monitor the temperature of each winding in real time. When the winding overheats, it is easy to cause damage to the transformer or a decline in performance. The current solutions mostly adopt overall temperature measurement or intermittent detection, and do not accurately monitor each winding. As a result, when a certain winding overheats, it cannot be discovered and measures cannot be taken in time, which may lead to overheating damage of the transformer, reduce the equipment life, increase the maintenance and replacement costs, and affect the stable operation and safety of small household appliances.

[0004] Therefore, there is an urgent need for a transformer with an on-line temperature measuring mechanism for windings to solve the technical defects mentioned in the above technology. Content of the Utility Model

[0005] The purpose of the utility model is to provide a transformer with an on-line temperature measuring mechanism for windings to solve the problem that the traditional transformer cannot monitor the temperature of each winding in real time mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A transformer with an on-line temperature measuring mechanism for windings includes a base and three-phase windings. The three-phase windings are assembled on the top of the base. Tap joints are respectively arranged at the three-phase windings. A top seat is assembled at the top of the three-phase windings. A temperature sensor is assembled outside each of the three-phase windings. A controller is installed on the right side of the top seat. A buzzer is arranged at the controller. A thermometer is arranged on one side of the buzzer. Three groups of indicator lights are arranged above the thermometer. The PCB board is above the indicator lights.

[0007] Preferably, the indicator lights respectively correspond to the three groups of three-phase windings. When the temperature of the three-phase winding is within the threshold range, the green light is on. When the temperature is outside the threshold range, the red light is on.

[0008] Preferably, a lower connecting seat is welded to the bottom end of each of the three-phase windings. An installation groove is opened in the base. The lower connecting seats are respectively inserted into the installation groove and welded and fixed. Upper connecting seats are respectively fixedly connected between the three-phase windings and the top seat.

[0009] Preferably, a sealing sleeve is sleeved outside each tap, and the sealing sleeve is a wire harness sleeve made of insulating rubber material.

[0010] Preferably, an outgoing line copper bar is fixedly connected to the front end of the top seat. A fixing bolt is fixedly connected between the outgoing line copper bar and the top seat. Three insulating terminals are fixedly connected to the outgoing line copper bar, and the top of the tap is press-fitted and connected to the insulating terminal.

[0011] Preferably, a rotating seat is installed at the bottom of the front end of the top seat, a pressing belt is installed on the right side, and an assembly screw is fixedly connected between the right side of the pressing belt and the top seat. The pressing belt can be opened and flipped outward along the horizontal direction of the top seat, and the maximum flipping angle is 0-90°. Three limiting grooves are respectively arranged in the pressing belt, and each group of limiting grooves is equidistantly distributed.

[0012] Preferably, a bottom groove is arranged in the base, a blower is installed at the top end inside the bottom groove, a filter screen is arranged below the blower, and both the top end and the bottom end of the bottom groove are open.

[0013] Preferably, a card seat is fixed on each of the two sides of the inner wall of the bottom groove. A card slot is respectively arranged in the card seat, a card block is clamped in the card slot, and a filter screen is fixedly connected between the card blocks.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The transformer with an in-winding on-line temperature measurement mechanism not only realizes grouped monitoring and temperature control, improves the service life and operation safety of the transformer, realizes automatic heat dissipation, prevents potential safety hazards caused by overheating, but also realizes enhanced insulation and fixation;

[0015] (1) By providing a temperature sensor, three-phase windings, an indicator light, a PCB board, and a buzzer, a temperature sensor is installed at each three-phase winding of the transformer. Through shunt temperature control, the temperature of each three-phase winding can be better detected. When the temperature sensor detects that the temperature of the three-phase winding is within the threshold range, the indicator light always lights up green. When the temperature of a certain group of three-phase windings is outside the threshold range, a signal is sent to the PCB board, the corresponding indicator light lights up red, and the buzzer sounds an alarm. The over-temperature reading is displayed on the thermometer, solving the problem that traditional transformers cannot monitor the temperature of each winding in real time, effectively preventing damage caused by winding overheating, improving the service life and operation safety of the transformer, and at the same time reducing the maintenance and replacement costs;

[0016] (2) By providing a temperature sensor, a fan, and a base, when a certain set of three-phase windings overheats, the temperature sensor sends a signal to the PCB board, and the PCB board instructs the corresponding fan to start, thereby sucking in the external air flow from the open bottom of the base. After filtering out dust through the filter screen, it is directed at the lower connecting seat for heat dissipation until the three-phase windings return to the normal temperature threshold range, solving the problem of failures caused by overheating during the use of small household appliances. By automatically dissipating heat, it effectively prevents potential safety hazards caused by overheating;

[0017] (3) By providing a tap, an insulating terminal, a pressure belt, and a limiting groove, each set of three-phase windings is connected upward to the insulating terminal through the tap. A sealing sleeve is provided outside the tap to improve the insulation effect and prevent electric leakage. At the same time, the pressure belt is used to compress the tap. The taps respectively pass through the three limiting grooves of the pressure belt and are restricted in position. The pressure belt is locked to the top seat through the assembly screws, preventing the tap from shaking and falling off. When necessary, the assembly screws can be disassembled, and the pressure belt can be flipped open to maintain the tap, solving the problems of electric leakage and unstable connection existing in traditional transformers during high-voltage operation. By strengthening the insulation and fixing structure, it ensures the safe operation of the equipment. Brief Description of the Drawings

[0018] Figure 1 It is a front view sectional structure schematic diagram of the present utility model;

[0019] Figure 2 It is a front view structure schematic diagram of the pressure belt of the present utility model;

[0020] Figure 3 It is a front view structure schematic diagram of the filter screen of the present utility model;

[0021] Figure 4 It is a front view structure schematic diagram of the temperature sensor of the present utility model.

[0022] In the figure: 1. Top seat; 2. Outlet copper bar; 3. Fixed bolt; 4. Rotating seat; 5. Upper connecting seat; 6. Three-phase windings; 7. Tap; 8. Lower connecting seat; 9. Installation groove; 10. Clamping seat; 11. Card slot; 12. Block; 13. Filter screen; 14. Fan; 15. Bottom groove; 16. Base; 17. Temperature sensor; 18. Sealing sleeve; 19. Controller; 20. Thermometer; 21. Indicator light; 22. PCB board; 23. Buzzer; 24. Insulating terminal; 25. Limiting groove; 26. Pressure belt; 27. Assembly screw. Detailed Description of the Preferred Embodiment

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1: Please refer to Figures 1-4 , a transformer with an on-line temperature measurement mechanism for windings, including a base 16 and three-phase windings 6. The three-phase windings 6 are assembled on the top of the base 16. Tap changers 7 are respectively arranged at the three-phase windings 6. A top seat 1 is assembled at the top of the three-phase windings 6. A set of temperature sensors 17 are respectively assembled outside the three-phase windings 6. A controller 19 is installed on the right side of the top seat 1. A buzzer 23 is arranged at the controller 19. A thermometer 20 is arranged on one side of the buzzer 23. Three groups of indicator lights 21 are arranged above the thermometer 20. Above the indicator lights 21 is a PCB board 22. The indicator lights 21 respectively correspond to the three groups of three-phase windings 6. When the temperature of the three-phase windings 6 is within the threshold range, the green light is on. When the temperature is outside the threshold range, the red light is on.

[0025] Specifically, as shown in Figure 1 and Figure 4 , a set of temperature sensors 17 are installed at each of the three-phase windings 6 of the transformer. Through shunt temperature control, the temperature of each group of three-phase windings 6 can be better detected. When the temperature sensor 17 detects that the temperature of the three-phase windings 6 is within the threshold range, the indicator light 21 is always on green. When the temperature of a certain group of three-phase windings 6 is outside the threshold range, a signal is sent to the PCB board 22, and the corresponding indicator light 21 is on red, and the buzzer 23 is activated for buzzer alarm. The over-temperature reading is displayed at the thermometer 20.

[0026] Embodiment 2: A bottom groove 15 is arranged inside the base 16. A blower 14 is installed at the top end inside the bottom groove 15. A filter screen 13 is arranged below the blower 14. The top and bottom of the bottom groove 15 are both open. A set of clamping seats 10 are respectively fixed on both sides of the inner wall of the bottom groove 15. A clamping groove 11 is respectively arranged in the clamping seats 10. A clamping block 12 is clamped in the clamping groove 11. The filter screen 13 is fixedly connected between the clamping blocks 12.

[0027] Specifically, as shown in Figure 1 and Figure 3 , when the temperature of a certain group of three-phase windings 6 is over-temperature, the temperature sensor 17 sends a signal to the PCB board 22. The PCB board 22 instructs the corresponding blower 14 to start, so as to draw in the external air flow with the lower open end of the base 16. After filtering the dust through the filter screen 13, it is directed at the lower connecting seat 8 for heat dissipation until the temperature of the three-phase windings 6 returns to the normal temperature threshold range.

[0028] Embodiment 3: Lower connection seats 8 are welded to the bottom ends of each of the three-phase windings 6. An installation groove 9 is formed inside the base 16. The lower connection seats 8 are respectively inserted into the installation groove 9 and welded and fixed. Upper connection seats 5 are fixedly connected between the three-phase windings 6 and the top seat 1. Sealing sleeves 18 are sleeved outside the tap changers 7. The sealing sleeves 18 are wire harness sleeves made of insulating rubber material. A lead-out copper bar 2 is fixedly connected to the front end of the top seat 1. A fixing bolt 3 is fixedly connected between the lead-out copper bar 2 and the top seat 1. Three groups of insulating terminals 24 are fixedly connected at the lead-out copper bar 2. The top of the tap changer 7 is press-fitted and connected to the insulating terminal 24. A rotating seat 4 is installed at the bottom of the front end of the top seat 1, and a pressure belt 26 is installed on the right side. A fitting screw 27 is fixedly connected between the right side of the pressure belt 26 and the top seat 1. The pressure belt 26 can be opened and flipped outward along the horizontal direction of the top seat 1, and the maximum flipping angle is 0 - 90°. Three groups of limiting grooves 25 are respectively arranged inside the pressure belt 26, and each group of limiting grooves 25 is equally spaced;

[0029] Specifically, as Figure 1 and Figure 2 shown, each group of three-phase windings 6 is connected upward to the insulating terminal 24 through the tap changer 7. A sealing sleeve 18 is arranged outside the tap changer 7 to improve the insulation effect and avoid electric leakage. At the same time, the pressure belt 26 is used to press the tap changer 7. The tap changers 7 respectively pass through the three groups of limiting grooves 25 of the pressure belt 26 and limit the positions. The pressure belt 26 is locked on the top seat 1 through the fitting screw 27 to avoid the shaking and falling off of the tap changer 7. When needed, the fitting screw 27 can be disassembled, and the pressure belt 26 can be flipped open to maintain the tap changer 7.

[0030] Working principle: A temperature sensor 17 is installed at each group of three-phase windings 6 of this transformer. Through shunt temperature control, the temperature of each group of three-phase windings 6 can be detected better. When the temperature sensor 17 detects that the temperature of the three-phase winding 6 is within the threshold range, the indicator light 21 is always on green. When the temperature of a certain group of three-phase windings 6 is outside the threshold range, a signal is sent to the PCB board 22, and the corresponding indicator light 21 is on red, and the buzzer 23 is activated for buzzer alarm. The over-temperature reading is displayed at the thermometer 20. When a certain group of three-phase windings 6 is over-temperature, the temperature sensor 17 sends a signal to the PCB board 22, and the PCB board 22 instructs the corresponding fan 14 to start, so as to draw the external air flow with an open bottom below the base 16 into it. After filtering the dust through the filter screen 13, it is directed at the lower connection seat 8 for heat dissipation until the three-phase winding 6 returns to the normal temperature threshold range.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A transformer with an online winding temperature measurement mechanism, comprising a base (16) and a three-phase winding (6), characterized in that: A three-phase winding (6) is assembled on the top of the base (16), and taps (7) are respectively arranged at the three-phase winding (6). A top base (1) is assembled on the top of the three-phase winding (6), and a group of temperature sensors (17) are assembled on the outside of each of the three-phase windings (6). A controller (19) is mounted on the right side of the top base (1), and a buzzer (23) is arranged at the controller (19). A thermometer (20) is arranged on one side of the buzzer (23), and three groups of indicator lights (21) are arranged above the thermometer (20). A PCB board (22) is arranged above the indicator lights (21).

2. The transformer with an online winding temperature measurement mechanism according to claim 1, characterized in that: The indicator lights (21) correspond to the three groups of three-phase windings (6) respectively. When the temperature of the three-phase windings (6) is within the threshold range, a green light is on; when the temperature is outside the threshold range, a red light is on.

3. The transformer with an online winding temperature measurement mechanism according to claim 1, characterized in that: The bottom ends of the three-phase windings (6) are each welded with a lower connecting seat (8), a mounting groove (9) is provided in the base (16), the lower connecting seats (8) are respectively inserted into the mounting grooves (9) and fixed by welding, and an upper connecting seat (5) is respectively fixedly connected between the three-phase windings (6) and the top seat (1).

4. The transformer with an online winding temperature measurement mechanism according to claim 1, characterized in that: The outside of each tap (7) is sleeved with a sealing sleeve (18), and the sealing sleeve (18) is a wiring harness sleeve made of insulating rubber material.

5. The transformer with an online winding temperature measurement mechanism according to claim 1, characterized in that: The front end of the top seat (1) is fixedly connected to an outlet copper busbar (2), a fixing bolt (3) is fixedly connected between the outlet copper busbar (2) and the top seat (1), three groups of insulating terminals (24) are fixedly connected to the outlet copper busbar (2), and the top of the tap (7) is press-fitted with the insulating terminals (24).

6. The transformer with an online winding temperature measurement mechanism according to claim 1, characterized in that: A rotating seat (4) is installed at the bottom of the front end of the top seat (1), and a pressing belt (26) is installed on the right side. An assembly screw (27) is fixedly connected between the right side of the pressing belt (26) and the top seat (1). The pressing belt (26) can be opened and flipped outward along the horizontal direction of the top seat (1), and the maximum flipping angle is 0-90 degrees. Three groups of limiting grooves (25) are respectively arranged in the pressing belt (26), and each group of limiting grooves (25) are distributed at equal intervals.

7. The transformer with an online winding temperature measurement mechanism according to claim 1, characterized in that: A bottom trough (15) is provided in the base (16), a fan (14) is installed at the top of the bottom trough (15), a filter (13) is provided below the fan (14), and the top and bottom ends of the bottom trough (15) are both open.

8. The transformer with an online winding temperature measurement mechanism according to claim 7, characterized in that: A group of card seats (10) are fixed on both sides of the inner wall of the bottom groove (15), and the card seats (10) are respectively provided with card slots (11), and card blocks (12) are connected in the card slots (11), and filter screens (13) are fixedly connected between the card blocks (12).

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