CN214796960U - Water-cooled high-power resistor - Google Patents
Water-cooled high-power resistor Download PDFInfo
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- CN214796960U CN214796960U CN202120803836.0U CN202120803836U CN214796960U CN 214796960 U CN214796960 U CN 214796960U CN 202120803836 U CN202120803836 U CN 202120803836U CN 214796960 U CN214796960 U CN 214796960U
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- porcelain tube
- water
- metal cap
- resistor
- power resistor
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Abstract
The application discloses but water-cooled high-power resistor, but wherein water-cooled high-power resistor includes the porcelain tube, and the porcelain tube is the column, and the lateral wall of porcelain tube covers has resistance thick liquids and electrode slurry, and electrode slurry is located the both ends of lateral wall, and electrode slurry is located between the electrode slurry at lateral wall both ends, and resistance slurry is connected with electrode slurry electricity, is equipped with in the porcelain tube along the cooling runner at its both ends of length direction link up. The water-cooled high-power resistor simplifies the structure of the resistor, and enables the resistor to maintain a good heat dissipation effect for a long time.
Description
Technical Field
The application relates to the field of resistors, in particular to a water-cooled high-power resistor.
Background
The resistor is used under the working condition of high power and high pulse for a long time, a large amount of heat can be generated to cause the temperature of the resistor to rise, and if the heat cannot be dissipated in time, the resistor can be burnt due to high temperature. In the related art, a metal with high heat conduction efficiency is abutted to the resistor to absorb heat generated by the resistor and further cool the resistor. However, since the metal has a good conductive property, an insulating material needs to be disposed between the resistor and the metal to prevent the resistor from being directly electrically connected with the metal, which results in a change in the resistance of the resistor. However, the insulation material arranged between the resistor and the metal can block heat conduction, thereby affecting the heat dissipation efficiency of the resistor and increasing the burning risk of the resistor.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, the water-cooled high-power resistor is provided, the structure of the resistor is simplified, and the resistor can maintain a good heat dissipation effect for a long time.
The water-coolable high-power resistor according to the embodiment of the application comprises: the ceramic tube, the ceramic tube is the column, the lateral wall of ceramic tube covers has resistance thick liquids and electrode slurry, the electrode slurry is located the both ends of lateral wall, the resistance thick liquids are located the both ends of lateral wall between the electrode slurry, the resistance thick liquids with the electrode slurry electricity is connected, be equipped with in the ceramic tube and link up the cooling runner at its both ends along length direction.
The water-coolable high-power resistor according to the embodiment of the application has at least the following beneficial effects: because the porcelain tube has better insulating property, the resistance slurry is directly arranged on the porcelain tube, the porcelain tube plays the roles of heat dissipation and insulation at the same time, the structure of the resistor is simplified, the insulating material required when the heat dissipation structure made of metal is adopted is omitted, the effect of isolating heat due to the existence of the insulating material is avoided, and the heat dissipation efficiency of the resistor is improved.
According to some embodiments of the application, still include the metal cap, the metal cap is equipped with two and covers respectively and locates two tip of porcelain tube, the inside wall of metal cap with the electrode thick liquids butt.
According to some embodiments of the application, the metal cap is connected to the end of the porcelain tube by an interference fit.
According to some embodiments of the application, a sealing ring is arranged between the end face of the porcelain tube and the metal cap.
According to some embodiments of the application, one metal cap is provided with a liquid inlet, another metal cap is provided with a liquid outlet, the liquid inlet the liquid outlet respectively with cooling runner intercommunication.
According to some embodiments of the application, the liquid inlet and the liquid outlet are both provided with quick release joints.
According to some embodiments of the present application, the resistance paste and the electrode paste are each provided with an insulating protective layer on an outer side.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a water-coolable high-power resistor according to an embodiment of the present application;
fig. 2 is an exploded view of the water-coolable high power resistor shown in fig. 1.
Reference numerals:
a porcelain tube 100, a resistance paste 110, an electrode paste 120, a sealing ring 130,
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, smaller, inner, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
The water-coolable high-power resistor according to the embodiment of the application comprises: the porcelain tube 100 is cylindrical, the outer side wall of the porcelain tube 100 is covered with resistance paste 110 and electrode paste 120, the electrode paste 120 is located at two ends of the outer side wall, the resistance paste 110 is located between the electrode paste 120 at the two ends of the outer side wall, the resistance paste 110 is electrically connected with the electrode paste 120, and a cooling flow channel penetrating through the two ends of the porcelain tube 100 along the length direction is arranged in the porcelain tube.
It can be understood that, the porcelain tube 100 is arranged in a column shape, the resistance paste 110 and the electrode paste 120 are covered on the outer side wall of the porcelain tube 100, the electrode paste 120 is covered on both ends of the outer side wall of the porcelain tube 100, the resistance paste 110 is covered between the electrode pastes 120 at both ends, and a part of the resistance paste 110 and a part of the electrode paste 120 are mutually covered or mutually abutted, so that the electrical connection between the resistance paste 110 and the electrode paste 120 is realized. The resistance paste 110 is a paste with a higher resistance, and the electrode paste 120 is a paste with a lower resistance. The porcelain tube 100 is provided therein with a cooling flow passage, which is provided along the length direction of the porcelain tube 100 and penetrates both ends of the porcelain tube 100 in the length direction. Insulating cooling liquid is introduced into a cooling flow channel in the porcelain tube 100, when the resistor works, heat generated by the resistor slurry 110 is conducted to the porcelain tube 100, and the insulating cooling liquid in the cooling flow channel takes away the heat on the porcelain tube 100.
The water-coolable high-power resistor according to the embodiment of the application has at least the following beneficial effects: because the porcelain tube 100 has better insulating property, the resistance slurry 110 is directly arranged on the porcelain tube 100, the porcelain tube 100 plays the roles of heat dissipation and insulation at the same time, the structure of the resistor is simplified, an insulating layer required when metal is adopted as a heat dissipation structure is omitted, the effect of isolating heat generated due to the existence of insulating materials is avoided, and the heat dissipation efficiency of the resistor is improved.
According to some embodiments of the present application, the electrode paste further includes a metal cap 200, two metal caps 200 are respectively disposed at two ends of the porcelain tube 100, and an inner sidewall of each metal cap 200 abuts against the electrode paste 120. It can be understood that the metal cap 200 is provided with a receiving cavity, the receiving cavity is provided with a connection port at one end of the metal cap 200, and the ceramic tube 100 is inserted into the receiving cavity of the metal cap 200 from the connection port of the metal cap 200 and abuts against the side wall of the receiving cavity. The electrode paste 120 at the end of the porcelain tube 100 is electrically connected to the metal cap 200, and the electrode paste 120 is electrically connected to the resistor paste 110. Through the arrangement, the end part of the porcelain tube 100 is plugged by the metal cap 200 which is covered on the end part of the porcelain tube 100, so that the overflow of the insulating cooling liquid in the porcelain tube 100 is avoided; meanwhile, the metal cap 200 is electrically connected to an external circuit, so that the resistance paste 110 can be electrically connected to the external circuit.
According to some embodiments of the present application, the metal cap is connected to the end of the porcelain tube 100 by interference fit. It can be understood that the interference fit connection method can provide a larger contact area between the metal cap 200 and the electrode paste 120 and provide a more stable contact therebetween while providing a better connection stability.
According to some embodiments of the present application, a sealing ring 130 is provided between the end surface of the porcelain tube and the metal cap. It is understood that, due to the low flexibility of the metal and the ceramic, if the manufacturing accuracy of the porcelain tube 100 and the metal cap 200 is not high enough, the cooling fluid may overflow between the metal cap 200 and the porcelain tube 100. The sealing ring 130 is provided to improve the sealing performance of the cooling channel in the porcelain tube 100 by sandwiching the sealing ring 130 between the metal cap 200 and the porcelain tube 100.
According to some embodiments of the present application, one metal cap 200 is provided with a liquid inlet 210, and the other metal cap is provided with a liquid outlet 220, and the liquid inlet 210 and the liquid outlet 220 are respectively communicated with the cooling flow channel. The caps at the two ends of the porcelain tube 100 are respectively provided with a liquid inlet 210 and a liquid outlet 220, so that the insulating cooling liquid in the porcelain tube 100 can circulate, the insulating cooling liquid with higher temperature flows out from the porcelain tube 100, and the uniform cooling liquid with lower temperature flows into the porcelain tube 100. Meanwhile, since the metal caps 200 are located at both ends of the porcelain tube 100, the contact time of the insulating cooling liquid with the porcelain tube 100 can be increased, and the cooling efficiency of the porcelain tube 100 can be further improved.
According to some embodiments of the present application, both the inlet port 210 and the outlet port 220 are provided with quick release joints 230. The advantage of providing quick disconnect 230 is the ability to quickly remove and install the resistor, facilitating maintenance of the resistor and replacement of coolant and consumables.
According to some embodiments of the present application, the outer sides of the resistance paste 110 and the electrode paste 120 are each provided with an insulating protective layer. Because thick film resistor often uses in the operational environment of high voltage, set up insulating protective layer in resistance thick liquids 110 and electrode thick liquids 120's the outside, can avoid resistance thick liquids 110, electrode thick liquids 120 and external direct contact, lead to dangerous emergence.
Referring to fig. 1 and 2, a water-coolable high power resistor according to an embodiment of the present application is described in detail as a specific embodiment. It is to be understood that the following description is only exemplary, and not a specific limitation of the application.
The water-coolable high power resistor includes a porcelain tube 100 and a metal cap 200.
The porcelain tube 100 is formed in a cylindrical shape, and a cooling flow passage is formed inside the porcelain tube 100. The outer side wall of the porcelain tube 100 is printed with the resistance paste 110 and the electrode paste 120, the electrode paste 120 covers two ends of the outer side wall of the porcelain tube 100, the resistance paste 110 covers the electrode paste 120 located at two ends of the outer side wall of the porcelain tube 100, and the resistance paste 110 and the electrode paste 120 are partially mutually covered or offset to realize electric connection. The resistance paste 110 is a paste with a higher resistance, and the electrode paste 120 is a paste with a lower resistance. The porcelain tube 100 is provided therein with a cooling flow passage, which is provided along the length direction of the porcelain tube 100 and penetrates both ends of the porcelain tube 100 in the length direction. The cooling flow channel is formed as a cylindrical through hole which is formed along the longitudinal direction of the porcelain tube 100 and penetrates both ends of the porcelain tube 100 in the longitudinal direction. The cooling flow channel in the porcelain tube 100 is filled with cooling liquid, when the resistor works, the heat generated by the resistor slurry 110 is conducted to the porcelain tube 100, and the insulating cooling liquid in the cooling flow channel takes away the heat on the porcelain tube 100.
The metal cap 200 is provided with the holding cavity, the holding cavity is provided with a connecting port at one end of the metal cap 200, the porcelain tube 100 extends into the holding cavity of the metal cap 200 from the connecting port of the metal cap 200 and abuts against the side wall of the holding cavity, and the end parts of the metal cap 200 and the porcelain tube 100 are fixedly connected through interference fit. The electrode paste 120 at the end of the porcelain tube 100 is electrically connected to the metal cap 200, and the electrode paste 120 is electrically connected to the resistor paste 110. The end part of the porcelain tube 100 is plugged by the metal cap 200 covering the end part of the porcelain tube 100, so that the overflow of the insulating cooling liquid in the porcelain tube 100 is avoided; meanwhile, the metal cap 200 is electrically connected to an external circuit, so that the resistance paste 110 can be electrically connected to the external circuit.
The caps at the two ends of the porcelain tube 100 are respectively provided with a liquid inlet 210 and a liquid outlet 220, so that the insulating cooling liquid in the porcelain tube 100 can flow through, the insulating cooling liquid with higher temperature flows out from the porcelain tube 100, and the uniform cooling liquid with lower temperature flows into the porcelain tube 100. Meanwhile, the liquid inlet 210 and the liquid outlet 220 are both provided with quick-release connectors 230, so that the resistor can be quickly disassembled and assembled, and the resistor is convenient to maintain and replace cooling liquid and a loss part.
According to the water-coolable high-power resistor, at least the following effects can be achieved by the arrangement: because the porcelain tube 100 has better insulating property, the resistance slurry 110 is directly arranged on the porcelain tube 100, the porcelain tube 100 plays the roles of heat dissipation and insulation at the same time, the structure of the resistor is simplified, the insulating layer required when metal is adopted as a heat dissipation structure is omitted, the effect of generating isolated heat due to the existence of the insulating layer is avoided, and the heat dissipation efficiency of the resistor is improved.
The embodiments of the present application have been described in detail with reference to the drawings, but the present application is not limited to the embodiments, and various changes can be made without departing from the spirit of the present application within the knowledge of those skilled in the art.
Claims (7)
1. A water-coolable high power resistor, comprising:
the ceramic tube, the ceramic tube is the column, the lateral wall of ceramic tube covers has resistance thick liquids and electrode slurry, the electrode slurry is located the both ends of lateral wall, the resistance thick liquids are located the both ends of lateral wall between the electrode slurry, the resistance thick liquids with the electrode slurry electricity is connected, be equipped with in the ceramic tube and link up the cooling runner at its both ends along length direction.
2. The water-coolable high-power resistor as claimed in claim 1, characterized in that: still include the metal cap, the metal cap is equipped with two and covers respectively and locates two tip of porcelain tube, the inside wall of metal cap with electrode thick liquids butt.
3. The water-coolable high-power resistor as claimed in claim 2, characterized in that: the metal cap is connected with the end part of the porcelain tube through interference fit.
4. The water-coolable high-power resistor as claimed in claim 2, characterized in that: and a sealing ring is arranged between the end face of the porcelain tube and the metal cap.
5. The water-coolable high-power resistor as claimed in claim 2, characterized in that: one the metal cap is provided with a liquid inlet, the other metal cap is provided with a liquid outlet, and the liquid inlet and the liquid outlet are respectively communicated with the cooling flow channel.
6. The water-coolable high-power resistor as claimed in claim 5, characterized in that: the liquid inlet with the liquid outlet all is provided with quick detach and connects.
7. The water-coolable high-power resistor as claimed in claim 1, characterized in that: and insulating protective layers are arranged on the outer sides of the resistance slurry and the electrode slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120803836.0U CN214796960U (en) | 2021-04-19 | 2021-04-19 | Water-cooled high-power resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120803836.0U CN214796960U (en) | 2021-04-19 | 2021-04-19 | Water-cooled high-power resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214796960U true CN214796960U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120803836.0U Active CN214796960U (en) | 2021-04-19 | 2021-04-19 | Water-cooled high-power resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214796960U (en) |
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2021
- 2021-04-19 CN CN202120803836.0U patent/CN214796960U/en active Active
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