CN210430148U - Through-flow heat dissipation U-shaped clamp for direct-current power transmission flow guide connector - Google Patents
Through-flow heat dissipation U-shaped clamp for direct-current power transmission flow guide connector Download PDFInfo
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- CN210430148U CN210430148U CN201921250976.9U CN201921250976U CN210430148U CN 210430148 U CN210430148 U CN 210430148U CN 201921250976 U CN201921250976 U CN 201921250976U CN 210430148 U CN210430148 U CN 210430148U
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Abstract
The utility model discloses a through-flow heat dissipation U-shaped clamp for a direct current transmission flow guide joint, which comprises two mounting end parts at two ends and a C-shaped through-flow heat dissipation part arranged between the two mounting end parts; the mounting end parts are used for being mounted on two sides of the flow guide joint; the C-shaped through-flow heat dissipation part consists of a plurality of layers of heat dissipation elements, and a gap of 1-5mm is formed between every two adjacent layers of heat dissipation elements. The through-flow heat dissipation U-shaped clamp adopts a multi-layer copper sheet pressure welding structure. The two ends are U-shaped clamp mounting ends, the pressure welding is smooth and firm, and the surface is plated with tin to prevent oxidation and corrosion; the thickness of the U-shaped clamp can be designed and processed according to the current, and the U-shaped clamp is arranged on two sides of the flow guide joint, so that the contact area of the original joint is doubled, and the current-carrying density of the contact surface is reduced, thereby achieving the purpose of reducing the temperature.
Description
Technical Field
The utility model relates to a direct current transmission auxiliary assembly part, concretely relates to direct current transmission water conservancy diversion connects with through-flow heat dissipation U-shaped clamp.
Background
China is wide in territory, and the distribution of a power generation energy center and an electrical load center is extremely unbalanced. The necessity of large-scale flow of power across regions in China is determined by the objective reality. The converter valve equipment is a key equipment in a high-voltage direct-current transmission system, and the operational reliability of the converter valve equipment directly influences the working stability of the direct-current transmission system. With the development of direct-current transmission, the transmission power is larger and larger, the transmission current is larger and larger, the heating problem of the through-flow joint of the high-voltage direct-current transmission converter valve is gradually highlighted, and serious threats are caused to the safety and stability of a system.
Along with the increase of the transmission power, the current of a main through-flow loop of the system is increased, the system loss is increased, the temperature of a connecting terminal of the main through-flow loop is increased, and in order to ensure that the connecting terminal can reliably operate at normal temperature, the heat dissipation capacity of the main through-flow loop must be increased, and the main measures are as follows: 1. the heat dissipation capacity of the main through-flow loop is increased; 2. the resistance of the main through-flow loop is reduced.
The resistance of the main current loop comprises a volume resistance and a contact resistance, and the volume resistance and the contact resistance are reduced in order to reduce the resistance of the main current loop. The volume resistance depends on the cross-sectional area of the conductor. The larger the cross-sectional area of the loop, the better, but the cross-sectional area of the loop conductor cannot be infinitely large in view of the problem of economical current density. The maximum through-flow requirement is met with the minimum cross section, the material consumption is reduced, the cost is reduced, and the quality of the conductive part is reduced. The main through-flow loop contact resistance is represented by the contact area between the conductors, i.e. the current carrying density. In the conventional converter valve through-flow design, the volume resistance of a conductor is basically considered, and the contact resistance of a conductor contact point is ignored. At the beginning of the operation of the converter valve, the temperature of the contact point does not rise suddenly due to the new treatment of the surface and the effect of the contact with the lubricating grease. After the operation for a period of time, because the current-carrying density of the contact points does not meet the requirements, the temperature of the contact points is continuously increased, the temperature is increased to cause the oxidation of the contact surface and the failure of the contact lubricating grease, the vicious circle and the heating problem of the joint are highlighted. The problem cannot be solved fundamentally by carrying out surface treatment again; the heating conductor is replaced and redesigned, so that the cost is higher, and the period is longer.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned prior art not enough, provide a direct current transmission water conservancy diversion connects with through-flow heat dissipation U-shaped clamp to reach and reduce through-flow contact point temperature purpose.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a through-flow heat dissipation U-shaped clamp for a direct-current power transmission flow guide connector comprises mounting end parts at two ends and a C-shaped through-flow heat dissipation part arranged between the two mounting end parts; the mounting end parts are used for being mounted on two sides of the flow guide joint; the C-shaped through-flow heat dissipation part consists of a plurality of layers of heat dissipation elements, and a gap of 1-5mm is formed between every two adjacent layers of heat dissipation elements.
Further, a gap of 2-3mm exists between two adjacent layers of heat dissipation elements.
Further, a mounting hole is provided in the mounting portion.
Further, the heat dissipation element is a copper sheet.
Further, the U-shaped clamp is composed of a plurality of layers of copper sheets; wherein, the both ends of multilayer copper skin are leveled firmly by the pressure welding, form the installation tip, and middle part copper skin is not pressure welding, forms the shape that scatters.
Further, the surface of the mounting end portion is plated with tin to form a tin plated layer.
Furthermore, the thickness of each layer of copper sheet is 0.2-0.5 mm.
Further, the thickness of the tin coating is 5-8 μm
Compared with the prior art, the utility model, its beneficial effect lies in:
the through-flow heat dissipation U-shaped clamp adopts a multi-layer copper sheet pressure welding structure. The two ends are U-shaped clamp mounting ends, the pressure welding is smooth and firm, and the surface is plated with tin to prevent oxidation and corrosion; the thickness of the U-shaped clamp can be designed and processed according to the current, and the U-shaped clamp is arranged on two sides of the flow guide joint, so that the contact area of the original joint is doubled, and the current-carrying density of the contact surface is reduced, thereby achieving the purpose of reducing the temperature;
the copper sheet in the middle of the through-flow heat dissipation U-shaped clamp is not welded in a pressing mode, a specific scattering shape is formed according to a special die in an integrated mode, the distance between every two layers is about 2-3mm, copper is a good conductor of heat, heat generated by the joint can be dissipated through the scattering copper sheet in the middle of the U-shaped clamp, and the purpose of reducing the temperature of the joint is achieved.
Drawings
Fig. 1 is a schematic structural view of a through-flow heat dissipation U-shaped clamp for a direct-current transmission flow guide connector provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the installation effect of the through-flow heat dissipation U-shaped clamp;
in the figure: 1. mounting the end portion; 2. a C-shaped through-flow heat dissipation portion; 10. copper sheet; 11. mounting holes; 100. a flow guide joint; 200. and (4) bolts.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b):
referring to fig. 1, the through-flow heat dissipation U-shaped clamp for the direct-current power transmission diversion connector provided by the embodiment adopts a multi-layer copper sheet 10 pressure welding structure. The two ends are U-shaped clamp mounting end parts 1, the pressure welding is smooth and firm, and the surface is plated with tin to prevent oxidation and corrosion; the thickness of the U-shaped clamp can be designed and processed according to the current, and the U-shaped clamp is arranged on two sides of the flow guide joint, so that the contact area of the original flow guide joint is doubled, and the current-carrying density of a contact surface is reduced, thereby achieving the purpose of reducing the temperature; the copper sheet 10 in the middle of the through-flow heat dissipation U-shaped clamp is not welded, a specific scattering shape is formed according to a special die, the distance between every two layers is about 2-3mm, and a C-shaped through-flow heat dissipation part 2 is formed. Copper is a good conductor of heat, and the heat generated by the flow guide connector can be dissipated by scattering the copper sheet part in the middle of the U-shaped clamp, so that the purpose of reducing the temperature of the connector is achieved. Of course, in other embodiments, the copper sheet can be replaced by a good conductor metal, such as silver, aluminum, etc., while maintaining the gap distance between two adjacent layers of heat dissipation elements at 1-5mm can meet the requirement of heat dissipation.
The specific manufacturing and using process of the through-flow heat dissipation U-shaped clamp is as follows:
step 1, a certain amount of copper sheets 10 are pressed and welded into the shape of a finished product under the fixation of a special die through a special process and equipment, and then holes are punched in the installation end part 1 as required to form installation holes 11, as shown in figure 1
Step 2, carrying out surface tinning on the mounting end part 1, wherein the tinning thickness is 5-8 mu m
Step 3, disassembling the original joint, performing surface treatment (including polishing and cleaning), and coating a thin layer of special contact lubricating grease
Step 4, cleaning the surface of the U-shaped clamp, and uniformly coating a thin layer of special contact lubricating grease
Step 5, installing the U-shaped clamp on the upper surface and the lower surface of the original diversion connector 100, fixing the U-shaped clamp on the original diversion connector 100 through a bolt 200 according to specific moment, and as shown in fig. 2
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. A through-flow heat dissipation U-shaped clamp for a direct-current power transmission flow guide joint is characterized by comprising mounting end parts at two ends and a C-shaped through-flow heat dissipation part arranged between the two mounting end parts; the mounting end parts are used for being mounted on two sides of the flow guide joint; the C-shaped through-flow heat dissipation part consists of a plurality of layers of heat dissipation elements, and a gap of 1-5mm is formed between every two adjacent layers of heat dissipation elements.
2. The through-flow heat dissipation U-shaped clamp for the direct-current transmission flow guide connector as claimed in claim 1, wherein a gap of 2-3mm exists between two adjacent layers of heat dissipation elements.
3. A through-flow heat dissipating clevis for a dc power transmission current lead joint as defined in claim 1, wherein a mounting hole is provided in the mounting end portion.
4. The through-flow heat dissipation U-shaped clamp for the direct-current transmission flow guide connector as claimed in claim 1 or 2, wherein the heat dissipation element is a copper sheet.
5. The through-flow heat dissipation U-shaped clamp for the direct-current transmission flow guide connector as recited in claim 4, wherein the U-shaped clamp is composed of multiple layers of copper sheets; wherein, the both ends of multilayer copper skin are leveled firmly by the pressure welding, form the installation tip, and middle part copper skin is not pressure welding, forms the shape that scatters.
6. The through-flow heat dissipating clevis for a dc power transmission current collector of claim 1, wherein a surface of the mounting end is plated with tin to form a tin plated layer.
7. The through-flow heat dissipation U-shaped clamp for the direct-current transmission flow guide connector as recited in claim 4, wherein the thickness of each copper sheet is 0.2-0.5 mm.
8. The through-flow heat dissipation clevis for direct-current transmission flow-guiding connector of claim 6, wherein the thickness of the tin-plated layer is 5-8 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921250976.9U CN210430148U (en) | 2019-08-02 | 2019-08-02 | Through-flow heat dissipation U-shaped clamp for direct-current power transmission flow guide connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921250976.9U CN210430148U (en) | 2019-08-02 | 2019-08-02 | Through-flow heat dissipation U-shaped clamp for direct-current power transmission flow guide connector |
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| Publication Number | Publication Date |
|---|---|
| CN210430148U true CN210430148U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921250976.9U Active CN210430148U (en) | 2019-08-02 | 2019-08-02 | Through-flow heat dissipation U-shaped clamp for direct-current power transmission flow guide connector |
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| CN (1) | CN210430148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4287409A1 (en) * | 2022-06-03 | 2023-12-06 | Aptiv Technologies Limited | Electrical connector for connecting high voltage power cable comprising electrical conductor to electrical terminal |
-
2019
- 2019-08-02 CN CN201921250976.9U patent/CN210430148U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4287409A1 (en) * | 2022-06-03 | 2023-12-06 | Aptiv Technologies Limited | Electrical connector for connecting high voltage power cable comprising electrical conductor to electrical terminal |
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