Extra-high voltage tubular bus subjected to arc oxidation treatment

Abstract

The utility model provides an arc oxidation treatment extra-high pressure tubular bus bar, which comprises a tubular bus bar main body and a pipe joint, the pipe joint is fixed on one side wall of the tubular bus bar main body, the tubular bus bar main body and the pipe joint are connected into a whole, a cavity is arranged in the tubular bus bar main body, a cooling ring is arranged in the cavity, the cooling ring is tightly attached to the cavity, and the pipe joint is fixed on the other side wall of the tubular bus bar main body. The cooling ring is filled with cooling liquid, and when the extra-high voltage tubular bus works, current is transmitted through the tubular bus main body and the pipe joints, and a large amount of heat is generated. Heat is transferred to the wall of the tubular bus main body and then transferred to the cooling ring, and the temperature rises after the cooling liquid absorbs the heat. Cooling liquid is pumped out of the heat dissipation water tank through the water pump in the external heat dissipation water tank and fed into the cooling ring through the water inlet, and the cooling liquid flows in the cooling ring to take away heat and flows out of the water outlet to return to the heat dissipation water tank to be cooled.

Description

Technical Field

[0001] This utility model relates to the technical field of ultra-high voltage power transmission and distribution accessories, and in particular to an ultra-high voltage tube busbar treated with arc oxidation. Background Technology

[0002] Ultra-high voltage (UHV) busbars are mainly used in UHV transmission systems, namely AC transmission with voltage levels of 1000 kV and above, or DC transmission technology with voltage levels of ±800 kV and above. In UHV transmission systems, tubular busbars can withstand greater short-circuit current impacts, support larger spans, and have good heat dissipation performance and low loss characteristics.

[0003] Chinese patent document CN202323566226.1 discloses a high-current insulated tube main conductor structure. This structure includes an inner liner, an outer liner, and at least two fixing members. The outer liner is fitted over the inner liner, and an installation gap is provided between the inner circumferential surface of the outer liner and the outer circumferential surface of the inner liner. The fixing members are disposed within the installation gap and are fixedly connected to the inner liner, with a transition fit or clearance fit to the inner circumferential surface of the outer liner. The high-current insulated tube main conductor structure provided by this invention is fabricated using thin-walled copper tubes of different cross-sectional areas, facilitating production and processing. Furthermore, under the same current conditions, compared to existing insulated tube main conductor structures, it saves more material and on-site installation space, thus expanding its applicability.

[0004] However, the above-mentioned patent has certain defects in use. The hollow conductor of the tube can naturally form hot air convection in the inner diameter air duct of the busbar. However, in some high-altitude areas, the environment is harsh. Due to the high altitude and long hours of sunlight, the natural convection heat dissipation method cannot meet the needs of long-term operation, which will lead to an increase in internal temperature. Over time, this will accelerate the oxidation and damage of internal parts, thereby shortening the service life.

[0005] To address these issues, an arc-oxidized ultra-high voltage tube motherboard is proposed. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology and solve the problem of insufficient heat dissipation of existing ultra-high voltage busbars and the lack of an effective heat dissipation structure to cope with the heat generated during high current transmission, this utility model provides a solution.

[0007] This utility model is achieved using the following technical solution:

[0008] An ultra-high voltage tube liner subjected to arc oxidation treatment includes a tube liner body and a tube connector. The tube connector is fixed on one side wall of the tube liner body. The tube liner body and the tube connector are integrated. The tube liner body has a cavity inside. A cooling ring is provided inside the cavity. The cooling ring is in close contact with the cavity. The cooling ring is filled with coolant.

[0009] The cooling ring has an inlet and an outlet on its side wall. The inlet and outlet are connected to the inside of the cooling ring and to an external heat dissipation tank.

[0010] A sealing cover is provided on the side of the main body of the pipe away from the pipe joint. A locking block is provided on the inner side wall of the sealing cover, and a matching locking groove is provided on the side wall of the main body of the pipe. The sealing cover and the main body of the pipe are fastened together by bolts.

[0011] The outer walls of the main body of the pipe and the pipe joint are coated with a layer of ceramic film.

[0012] Multiple retaining strips are fixedly provided on the inner wall of the main body of the tube, and the retaining strips are arranged at equal intervals along the circumference of the center of the main body of the tube.

[0013] The present invention has the following advantages over the prior art:

[0014] 1. When the UHV busbar is working, the current is transmitted through the busbar body and pipe joints, generating a large amount of heat. The generated heat is transferred to the cooling ring. The coolant absorbs the heat and its temperature rises. The heat is carried away by the circulation of the coolant, thereby achieving effective heat dissipation of the busbar body.

[0015] 2. By coating the outside of the main body of the pipe and the pipe joint with a ceramic film shell, the main body of the pipe and the pipe joint can be protected from corrosion and wear by the external environment, thus extending the service life of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is an exploded three-dimensional structural diagram of this utility model;

[0018] Figure 3 This is a front view of the present invention;

[0019] Figure 4 This is a side view of the present invention;

[0020] Figure 5 This is a utility model Figure 4 Schematic diagram of the cross-sectional structure along the AA direction;

[0021] In the diagram: 1. Ceramic membrane shell; 2. Main body of the tube; 21. Pipe connector; 22. Slot; 23. Cavity; 3. Sealing cap; 31. Locking block; 4. Inlet; 5. Outlet; 6. Locking strip; 7. Cooling ring; 8. Bolt. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figures 1 to 5 As shown, an ultra-high voltage (UHV) duct header undergoing arc oxidation treatment includes a header body 2 and a connector 21. The connector 21 is fixed to one side wall of the header body 2, and the header body 2 and connector 21 are integrated. A cavity 23 is provided inside the header body 23, and a cooling ring 7 is provided within the cavity 23. The cooling ring 7 is in close contact with the cavity 23 to ensure good heat transfer. The cooling ring 7 is filled with coolant, which can be water, ethylene glycol, or other liquids with good heat dissipation properties. By setting a cooling ring 7 filled with coolant inside the header body 2, the heat generated when the header is working can be transferred to the cooling ring 7. The coolant absorbs heat and its temperature rises. The heat is then carried away through the circulation of the coolant, thereby achieving effective heat dissipation for the header body 2.

[0025] The cooling ring 7 has an inlet 4 and an outlet 5 on its side wall. The inlet 4 and outlet 5 are connected to the interior of the cooling ring 7 and to an external heat dissipation tank. The external heat dissipation tank is equipped with a water pump, which draws coolant from the heat dissipation tank and sends it into the cooling ring 7 through the inlet 4. After absorbing heat in the cooling ring 7, the coolant flows out from the outlet 5 and returns to the heat dissipation tank for cooling. This cycle repeats, achieving heat dissipation for the main body 2 of the tube. The coolant in the external heat dissipation tank enters the cooling ring 7 through the inlet 4, absorbs heat, flows out from the outlet 5, and returns to the heat dissipation tank for cooling, forming a circulating heat dissipation system and improving heat dissipation efficiency.

[0026] A sealing cap 3 is provided on the side of the main body 2 away from the pipe connector 21. A locking block 31 is provided on the inner wall of the sealing cap 3, and a matching locking groove 22 is provided on the side wall of the main body 2. The sealing cap 3 and the main body 2 are fastened together by bolts 8. The sealing cap 3 protects the cooling ring 7 inside the main body 2, preventing coolant leakage and the entry of external impurities. The engagement of the locking block 31 and the locking groove 22 allows for initial positioning of the sealing cap 3, facilitating the tightening of the bolts 8.

[0027] A ceramic membrane shell 1 is coated on the outer wall of the main body 2 and the pipe joint 21. The ceramic membrane shell 1 has good insulation, corrosion resistance and wear resistance, which can effectively protect the main body 2 and the pipe joint 21, extend their service life and improve electrical safety.

[0028] Multiple retaining strips 6 are fixedly provided on the inner wall of the main body 2. The retaining strips 6 are arranged at equal intervals along the circumference of the center of the main body 2. The retaining strips 6 can increase the contact area between the main body 2 and other internal components (such as wires), improve the conductivity, and enhance the structural strength of the main body 2.

[0029] The working principle of this utility model is as follows: When the ultra-high voltage power transmission system is running, the current flows from the external power transmission line or electrical equipment into the main body 2 of the pipe connector 21. The main body 2 of the pipe connector 2 serves as the main conductive channel to transmit the current to the next connection point or electrical equipment. During this process, due to the thermal effect of the current, the main body 2 of the pipe connector 2 will generate heat due to resistance.

[0030] The heat generated by the main body 2 is first transferred to the inner wall of the cavity 23 that is in close contact with it. Since the cooling ring 7 is installed in the cavity 23 and is in close contact with the wall of the cavity 23, the heat is quickly transferred from the wall of the cavity 23 to the cooling ring 7. The cooling ring 7 is made of a material with good thermal conductivity and can efficiently absorb heat.

[0031] The water pump in the external radiator starts, drawing coolant from the radiator and sending it into the cooling ring 7 through the inlet 4. The coolant flows in the cooling ring 7, continuously absorbing heat from the cooling ring 7, causing the temperature to rise. After absorbing heat, the coolant flows out of the cooling ring 7 through the outlet 5 and returns to the radiator.

[0032] In the radiator tank, the coolant dissipates heat into the surrounding environment through the radiator, lowering the temperature. The cooled coolant is then pumped out again by the water pump to enter the next cycle, and so on, achieving continuous heat dissipation for the main body 2 of the radiator.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An ultra-high voltage tube liner subjected to arc oxidation treatment, comprising a tube liner body (2) and a tube connector (21), wherein the tube connector (21) is fixed to one side wall of the tube liner body (2), and the tube liner body (2) and the tube connector (21) are integrally connected, characterized in that, The main body (2) of the tube is provided with a cavity (23), and a cooling ring (7) is provided in the cavity (23). The cooling ring (7) is in close contact with the cavity (23), and the interior of the cooling ring (7) is filled with coolant.

2. The UHV tube header subjected to arc oxidation treatment according to claim 1, characterized in that: The cooling ring (7) has an inlet (4) and an outlet (5) on its side wall. The inlet (4) and outlet (5) are connected to the interior of the cooling ring (7) and to an external heat dissipation tank.

3. The UHV tube header subjected to arc oxidation treatment according to claim 2, characterized in that: The main body of the pipe (2) is provided with a sealing cover (3) on the side away from the pipe joint (21). The inner wall of the sealing cover (3) is provided with a locking block (31). The side wall of the main body of the pipe (2) is provided with a matching locking groove (22). The sealing cover (3) and the main body of the pipe (2) are fastened together by bolts (8).

4. The UHV tube header subjected to arc oxidation treatment according to claim 1, characterized in that: A ceramic film shell (1) is coated on the outer wall of the main body (2) and the pipe joint (21).

5. The UHV tube header subjected to arc oxidation treatment according to claim 1, characterized in that: Multiple retaining strips (6) are fixedly provided on the inner wall of the main body (2), and the retaining strips (6) are arranged at equal intervals along the circumference of the center of the main body (2).

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