CN217933373U - Power transformer with over-temperature protection - Google Patents
Power transformer with over-temperature protection Download PDFInfo
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- CN217933373U CN217933373U CN202222318805.3U CN202222318805U CN217933373U CN 217933373 U CN217933373 U CN 217933373U CN 202222318805 U CN202222318805 U CN 202222318805U CN 217933373 U CN217933373 U CN 217933373U
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Abstract
The utility model relates to a power transformer technical field specifically is a power transformer with excess temperature protection, include: the protective shell is composed of two symmetrical vertical plates, a top plate and a bottom plate, and the two symmetrical vertical plates, the top plate and the bottom plate are connected through screws; the transformer body is arranged inside the protection shell and consists of a fixed shell, a framework, a coil, a clamping groove and an over-temperature protection assembly, and the over-temperature protection assembly is arranged on the fixed shell. By arranging the over-temperature protection component, the thermistor can quickly detect the coil temperature, and can play a role of over-temperature protection on the power transformer, thereby preventing the power transformer from being burnt out due to over-high temperature; meanwhile, the detachable protective shell is arranged, so that workers can conveniently detect or maintain the inside of the power transformer.
Description
Technical Field
The utility model relates to a power transformer technical field specifically is a power transformer with excess temperature protection.
Background
The power transformer functions as power transmission, voltage conversion and insulation isolation, and is widely applied to power supply technology and power electronic technology as a main soft magnetic electromagnetic element. However, the existing power transformer has the following defects in the using process: firstly, after the transformer works for a long time, the temperature of the transformer is gradually increased, so that the heat dissipation of the transformer is particularly important for ensuring the normal work of the transformer, the general transformer is generally cooled by insulating oil loaded in the transformer, but the heat dissipation effect is not ideal enough, and the electronic components in the transformer are easily damaged, so that the service life of the transformer is completely influenced; second, current power transformer uses the shell all be integrated into one piece, and the shell can not be dismantled, and inconvenient operating personnel detects or maintains power transformer's internal device. In view of this, we propose a power transformer with over-temperature protection.
SUMMERY OF THE UTILITY MODEL
In order to make up for the above insufficiency, the utility model provides a power transformer with excess temperature protection.
The technical scheme of the utility model is that:
a power transformer with over-temperature protection, comprising:
the protective shell is composed of two symmetrical vertical plates, a top plate and a bottom plate, and the two symmetrical vertical plates, the top plate and the bottom plate are connected through screws;
the transformer body is arranged inside the protection shell and consists of a fixed shell, a framework, a coil, a clamping groove and an over-temperature protection assembly, and the over-temperature protection assembly is arranged on the fixed shell.
Preferably, the middle part of the top plate is provided with a rectangular groove, and the inner wall of the rectangular groove is fixedly provided with a radiating fin.
Preferably, the bottom plate middle part is equipped with the radiating groove, and the equal fixed mounting in bottom plate left and right sides has the connecting plate, every all be equipped with the mounting hole on the connecting plate.
Preferably, the filter screen is fixedly installed on the inner wall of the radiating groove, and the radiating groove and the radiating fins are located on the same vertical plane.
Preferably, the fixed shell is arranged inside the protection shell, the left side and the right side of the fixed shell are connected with the inner wall of the protection shell through screws, and the fixed shell and the inner wall of the fixed shell are both provided with insulating layers.
Preferably, the skeleton is equipped with two of longitudinal symmetry, two inside fixed casing all was located to the skeleton, fixed mounting had the link between two skeletons.
Preferably, white dry glue is coated on the surfaces of the two frameworks and the connecting frame.
Preferably, the coil is wound on the connecting frame, and the surface of the coil is coated with a polyester film material.
Preferably, the left side wall and the right side wall of the fixed shell are both provided with clamping grooves, and the clamping grooves and the two sides of the coil are clamped and fixed.
Preferably, the over-temperature protection assembly includes:
the fixing base is fixedly installed at the top of the fixing shell, the thermistor is fixedly installed on the inner wall of the fixing base, the heat conducting cover is installed at the upper end of the fixing base in a threaded mode, and the height of the heat conducting cover extends to the position below the radiating fins.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up the protection casing that can dismantle, make things convenient for the staff to detect or maintain power transformer's inside.
2. The utility model discloses a set up fin, radiating groove, both dispel the heat simultaneously, improve power transformer's radiating efficiency, prevent that power transformer is overheated, and damage inside electronic components to can prolong power transformer's life.
3. The utility model discloses a set up and scribble the polyester film material on the coil and seal up, can effectively play waterproof, heat dissipation, insulating effect
4. The utility model discloses a set up the excess temperature protection subassembly, thermistor can the short-term test coil temperature, and thermistor leads to the temperature to rise owing to the power increase that generates heat, and resistance can sharply increase in the twinkling of an eye, and the electric current in the return circuit can reduce to safe value rapidly, can play the effect of excess temperature protection to power transformer like this, prevents that power transformer from leading to burning out because of the high temperature.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the protective casing of the present invention;
fig. 3 is a schematic structural view of the transformer body of the present invention;
fig. 4 is an explosion diagram of the over-temperature protection assembly of the present invention.
In the figure:
1. a protective housing; 11. a vertical plate; 12. a top plate; 13. a heat sink; 14. a base plate; 15. a heat sink; 16. a connecting plate;
2. a transformer body; 21. a stationary housing; 22. a framework; 23. a coil; 24. a card slot; 25. an over-temperature protection component; 251. a fixed seat; 252. a thermistor; 253. a heat conducting cover.
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 efforts all belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
a power transformer with over-temperature protection, comprising:
the protective shell 1 is composed of two symmetrical vertical plates 11, a top plate 12 and a bottom plate 14, and the two symmetrical vertical plates 11, the top plate 12 and the bottom plate 14 are connected through screws; a rectangular groove is formed in the middle of the top plate 12, and radiating fins 13 are fixedly arranged on the inner wall of the rectangular groove; the middle part of the bottom plate 14 is provided with a heat dissipation groove 15, the left side and the right side of the bottom plate 14 are both fixedly provided with connecting plates 16, and each connecting plate 16 is provided with a mounting hole; the filter screen is fixedly installed on the inner wall of the heat dissipation groove 15, and the heat dissipation groove 15 and the heat dissipation fins 13 are located on the same vertical plane.
It should be added that the inside of the protection casing 1 does not contact with the upper and lower ends of the fixed casing 21, and a heat dissipation channel is formed between the inside of the protection casing 1 and the upper and lower ends of the fixed casing 21, so as to facilitate heat dissipation.
The protective shell 1 is composed of two symmetrical vertical plates 11, a top plate 12 and a bottom plate 14, and the two symmetrical vertical plates 11, the top plate 12 and the bottom plate 14 are connected through screws, so that the protective shell is convenient to disassemble and is convenient for workers to detect or maintain the interior of the power transformer; the power transformer can be integrally installed through the installation hole of the connecting plate 16; in the process of using the transformer body 2, the heat generated by the transformer body can protect a heat dissipation channel between the inside of the shell 1 and the fixed shell 21 to dissipate heat, the heat can be respectively and quickly conducted to the outside from the heat dissipation fins 13 at the upper end, and can also be discharged through the heat dissipation grooves 15 at the lower end, the heat dissipation channels and the heat dissipation fins can dissipate heat at the same time, the heat dissipation efficiency of the power transformer is improved, the power transformer is prevented from being overheated, internal electronic components are prevented from being damaged, and the service life of the power transformer can be prolonged; and the filter screen is arranged on the heat dissipation groove 15, so that dust can be effectively prevented from entering the power transformer.
The transformer comprises a transformer body 2, wherein the transformer body 2 is arranged in a protective shell 1, the transformer body 2 consists of a fixed shell 21, a framework 22, a coil 23, a clamping groove 24 and an over-temperature protection assembly 25, and the over-temperature protection assembly 25 is arranged on the fixed shell 21; the fixed shell 21 is arranged in the protective shell 1, the left side and the right side of the fixed shell 21 are connected with the inner wall of the protective shell 1 through screws, and insulating layers are arranged on the inner walls of the fixed shell 21 and the fixed shell 21; the two frameworks 22 are vertically symmetrical, the two frameworks 22 are both arranged in the fixed shell 21, and a connecting frame is fixedly arranged between the two frameworks 22; the surfaces of the two frameworks 22 and the connecting frame are coated with white dry glue; the coil 23 is wound on the connecting frame, and the surface of the coil 23 is coated with a polyester film material; the left side wall and the right side wall of the fixed shell 21 are both provided with clamping grooves 24, and the two clamping grooves 24 are clamped and fixed with the two sides of the coil 23; the excess temperature protection assembly 25 includes: the fixing seat 251, the fixing seat 251 is fixedly installed on the top of the fixing housing 21, the thermistor 252 is fixedly installed on the inner wall of the fixing seat 251, the heat conducting cover 253 is installed on the upper end of the fixing seat 251 in a threaded manner, and the height of the heat conducting cover 253 extends to the lower side of the heat radiating fin 13.
It should be added that the fixing base 251 and the heat conducting cover 253 are made of steel, and the thermistor 252 is electrically connected to the coil 23 through a wire.
When the power transformer is used, firstly, white dry glue is coated on the surfaces of the framework 22 and the connecting frame, so that the magnetic core in the coil can be prevented from contacting with the framework 22 and the connecting frame, and a magnetic loop can not be formed, so that the temperature of the framework 22 and the connecting frame is not too high; then, the coil 23 is coated with a polyester film material for sealing, so that waterproof, heat dissipation and insulation effects can be effectively achieved, and the two sides of the coil 23 are clamped in the clamping grooves 24 of the fixed shell 21, so that the stability of the whole coil 23 can be ensured; after the power transformer is used for a period of time, heat is generated and is conducted to the thermistor 252 through a lead, the thermistor 252 can rapidly detect the temperature of the coil 23 at the moment, the temperature of the thermistor 252 rises due to the increase of heating power, the resistance rises rapidly, and the current in a loop can be rapidly reduced to a safe value, so that the power transformer can be protected from over-temperature, and the power transformer is prevented from being burnt due to over-high temperature; because the fixing base 251 and the heat conducting cover 253 are made of steel materials, heat can be quickly conducted to the heat conducting cover 253, and then the heat is conducted to the radiating fins 13 through the heat conducting cover 253, so that the heat can be discharged.
When the coil is used specifically, firstly, white dry glue is coated on the surfaces of the framework 22 and the connecting frame, so that the magnetic core in the coil can be prevented from contacting with the framework 22 and the connecting frame, and a magnetic loop can not be formed, so that the temperature of the framework 22 and the connecting frame is too high;
then, the coil 23 is coated with a polyester film material for sealing, so that waterproof, heat dissipation and insulation effects can be effectively achieved, and the two sides of the coil 23 are clamped in the clamping grooves 24 of the fixed shell 21, so that the stability of the whole coil 23 can be ensured;
at this moment, after the power transformer is used for a period of time, heat is generated and is conducted to the thermistor 252 through a lead, the thermistor 252 can quickly detect the temperature of the coil 23, the temperature of the thermistor 252 rises due to the increase of heating power, the resistance rises rapidly, and the current in a loop can be quickly reduced to a safe value, so that the power transformer can be protected from over-temperature, and the power transformer is prevented from being burnt due to over-high temperature;
since the fixing base 251 and the heat conducting cover 253 are made of steel materials, heat can be quickly conducted to the heat conducting cover 253, and then the heat is conducted to the radiating fins 13 through the heat conducting cover 253, so that the heat can be discharged; meanwhile, the heat can be discharged through the heat dissipation groove 15 at the lower end, and the heat can be dissipated from the heat dissipation groove and the heat dissipation groove at the lower end, so that the heat dissipation efficiency of the power transformer is improved, the power transformer is prevented from being overheated to damage internal electronic components, and the service life of the power transformer can be prolonged.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A power transformer with over-temperature protection, comprising:
the protective shell (1) is composed of two symmetrical vertical plates (11), a top plate (12) and a bottom plate (14), and the two symmetrical vertical plates (11), the top plate (12) and the bottom plate (14) are connected through screws;
transformer body (2), inside protection casing (1) was located in transformer body (2), just transformer body (2) comprises fixed casing (21), skeleton (22), coil (23), draw-in groove (24) and excess temperature protection subassembly (25), excess temperature protection subassembly (25) are located on fixed casing (21).
2. The power transformer with over-temperature protection as claimed in claim 1, wherein: the middle part of the top plate (12) is provided with a rectangular groove, and the inner wall of the rectangular groove is fixedly provided with a radiating fin (13).
3. The power transformer with over-temperature protection as claimed in claim 1, wherein: bottom plate (14) middle part is equipped with radiating groove (15), and the equal fixed mounting in bottom plate (14) left and right sides has connecting plate (16), every all be equipped with the mounting hole on connecting plate (16).
4. A power transformer with over-temperature protection as claimed in claim 3, characterized in that: the filter screen is fixedly installed on the inner wall of the radiating groove (15), and the radiating groove (15) and the radiating fins (13) are located on the same vertical plane.
5. The power transformer with over-temperature protection as claimed in claim 1, wherein: inside protection casing (1) was located in fixed casing (21), and also through the screw connection between the left and right sides of fixed casing (21) and protection casing (1) inner wall, fixed casing (21) and fixed casing (21) inner wall all are equipped with the insulating layer.
6. The power transformer with over-temperature protection as recited in claim 1, wherein: skeleton (22) are equipped with two of longitudinal symmetry, two inside fixed casing (21) all were located in skeleton (22), fixed mounting had the link between two skeletons (22).
7. The power transformer with over-temperature protection of claim 6, wherein: white dry glue is coated on the surfaces of the two frameworks (22) and the connecting frame.
8. The power transformer with over-temperature protection as claimed in claim 1, wherein: the coil (23) is wound on the connecting frame, and the surface of the coil (23) is coated with a polyester film material.
9. The power transformer with over-temperature protection as recited in claim 1, wherein: the left side wall and the right side wall of the fixed shell (21) are respectively provided with a clamping groove (24), and the clamping grooves (24) are fixedly clamped with the two sides of the coil (23).
10. The power transformer with over-temperature protection as claimed in claim 1, wherein: the over-temperature protection assembly (25) comprises:
the fixing seat (251) is fixedly arranged at the top of the fixing shell (21), the inner wall of the fixing seat (251) is fixedly provided with a thermistor (252), the upper end of the fixing seat (251) is provided with a heat conducting cover (253) in a threaded mode, and the height of the heat conducting cover (253) extends to the position below the radiating fin (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222318805.3U CN217933373U (en) | 2022-08-31 | 2022-08-31 | Power transformer with over-temperature protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222318805.3U CN217933373U (en) | 2022-08-31 | 2022-08-31 | Power transformer with over-temperature protection |
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| Publication Number | Publication Date |
|---|---|
| CN217933373U true CN217933373U (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222318805.3U Active CN217933373U (en) | 2022-08-31 | 2022-08-31 | Power transformer with over-temperature protection |
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| Country | Link |
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| CN (1) | CN217933373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116153621A (en) * | 2023-04-19 | 2023-05-23 | 广东力王高新科技股份有限公司 | New energy transformer structure and manufacturing method |
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2022
- 2022-08-31 CN CN202222318805.3U patent/CN217933373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116153621A (en) * | 2023-04-19 | 2023-05-23 | 广东力王高新科技股份有限公司 | New energy transformer structure and manufacturing method |
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