Rare earth aluminum alloy copper bar and switch cabinet

Abstract

The invention discloses a rare earth aluminum alloy copper bar and a switch cabinet, the rare earth aluminum alloy copper bar comprises a body made of rare aluminum alloy, at least one end of the body is provided with a connecting part, the connecting part is provided with a first mounting hole, the rare earth aluminum alloy copper bar further comprises a conductive block, and the conductive block is provided with a second mounting hole corresponding to the first mounting hole. A plurality of first conductive columns are connected to the conductive block in the circumferential direction of the second mounting hole, a plurality of second conductive columns are connected to the interior of the area, away from the second mounting hole, of the conductive block, a pressing block is arranged at the upper end of the connecting part, and clamping mechanisms are symmetrically arranged on the left side and the right side of the pressing block and the conductive block; and the clamping mechanism tightly presses the pressing block, the connecting part and the conductive block. The first conductive column and the second conductive column are stressed to extrude the contact surface to deform to form tight fit, the deformation can extrude air and prevent water in the air from forming electrolyte to cause electrochemical corrosion between copper and aluminum on one hand, and on the other hand, the contact resistance can be reduced, and the heating value is reduced.

Description

Technical Field

[0001] The present invention relates to a conductive copper-aluminum connection device, and particularly to a rare earth aluminum alloy copper bar and a switch cabinet. Background Art

[0002] According to the definition of electrical copper bars in Baidu Encyclopedia: Electrical copper bars are high-current conductive products applicable to electrical engineering such as high and low voltage electrical appliances, switch contacts, power distribution equipment, and bus ducts. With the development of rare earth aluminum alloy conductor materials, especially their wide application in the field of power cables, it has become possible to use rare earth aluminum alloy copper bars to replace electrical copper bars. For example, the rare earth high-strength aluminum alloy conductor material disclosed in Patent CN102262913B can increase the long-term operating temperature of the aluminum alloy to 150°C and has a larger current-carrying capacity, so it can replace electrical copper bars. However, in actual use, the connection terminals of large-current circuit breakers use red copper. When the rare earth aluminum alloy copper bar is connected to the connection terminal by bolts, due to the large force near the bolts and the small force at the far end, air is mixed into the contact surface between the rare earth aluminum alloy copper bar and the connection terminal during tightening. Moisture and salt in the air are likely to cause electrochemical corrosion between copper and aluminum during long-term operation, reducing the connection reliability. At the same time, although the long-term operating temperature of the rare earth aluminum alloy material is increased to 150°C, creep of the material occurs at high temperatures, resulting in reduced connection reliability. Since the direct connection between copper and aluminum inevitably occurs, this practical problem limits the wide application of rare earth aluminum alloy copper bars. In view of the above defects, it is necessary to design a rare earth aluminum alloy copper bar and a switch cabinet. Summary of the Invention

[0003] The purpose of the present invention is to provide a rare earth aluminum alloy copper bar and a switch cabinet, which can prevent air from entering the contact surface, avoid electrochemical corrosion, and improve the connection reliability.

[0004] To solve the above technical problems, the technical solution of the present invention is: A rare earth aluminum alloy copper bar includes a body made of rare earth aluminum alloy. At least one end of the body is provided with a connection portion. The connection portion is provided with a first installation hole. The rare earth aluminum alloy copper bar further includes a conductive block. The conductive block is provided with a second installation hole corresponding to the first installation hole. A plurality of first conductive columns are connected along the circumferential direction of the second installation hole on the conductive block. A plurality of second conductive columns are connected in a region of the conductive block far from the second installation hole. The shapes of the first conductive columns and the second conductive columns are frustum of a cone. The height of the second conductive columns is greater than the height of the first conductive columns. The body is respectively provided with a first fitting hole and a second fitting hole that cooperate with the first conductive columns and the second conductive columns. A pressing block is provided at the upper end of the connection portion. The pressing block is provided with a third fitting hole and a fourth fitting hole that cooperate with the first conductive columns and the second conductive columns. Clamping mechanisms are symmetrically arranged on the left and right sides of the pressing block and the conductive block. The clamping mechanisms press the pressing block, the connection portion, and the conductive block tightly.

[0005] The further improvements of the present invention are as follows:

[0006] Furthermore, the material of the conductive block is dilute aluminum alloy.

[0007] Furthermore, the material of the pressing block is rare earth aluminum alloy.

[0008] Furthermore, first wedge-shaped blocks are arranged on the left and right sides of the conductive block.

[0009] Furthermore, the pressing block is further provided with a first glue storage groove and a second glue storage groove. The first glue storage groove is opened on the top surface of the pressing block, and the first glue storage groove communicates with the third mating hole. The second glue storage groove is opened on the top surface of the pressing block, and the second glue storage groove communicates with the fourth mating hole. The first glue storage groove and the second glue storage groove are filled with silicone grease paste.

[0010] Furthermore, second wedge-shaped blocks are arranged on the left and right sides of the pressing block.

[0011] Furthermore, a silicone rubber pad is arranged on the top of the pressing block. A plurality of first protrusions and a plurality of second protrusions that are respectively matched with the first glue storage groove and the second glue storage groove are arranged at the bottom of the silicone rubber pad. The first protrusions and the second protrusions extend into the first glue storage groove and the second glue storage groove to extrude the silicone grease paste.

[0012] Furthermore, the clamping mechanism includes a frame body made of rare earth aluminum alloy. The frame body is in a "C" shape, and wedge-shaped surfaces that are respectively matched with the first wedge-shaped block and the second wedge-shaped block are arranged on the upper and lower surfaces of its opening. By pushing the frame body to slide along the first wedge-shaped block and the second wedge-shaped block, the pressing block, the connecting part, and the conductive block are mutually close until they are pressed tightly. A groove is arranged on the other side of the frame body, and a cover plate is arranged outside the groove. A liquid inlet pipe and a liquid outlet pipe are arranged at the bottom of the frame body, and the cavities of the liquid inlet pipe and the liquid outlet pipe communicate with the groove respectively.

[0013] A switch cabinet includes a cabinet body. A circuit breaker is installed in the cabinet body, and the circuit breaker is connected with a rare earth aluminum alloy copper bar.

[0014] Furthermore, a circulating mechanism is further arranged in the cabinet body. The circulating mechanism includes an oil tank. Two water pumps are fixed on the top of the oil tank. The inlets of the water pumps are connected with the oil tank through hoses. The oil tank is provided with a distribution block. A plurality of oil holes are arranged on the distribution block, and the oil holes are connected with the clamping mechanism through hoses. Two high-pressure oil channels are arranged on the distribution block, and the high-pressure oil channels are connected with the outlets of the water pumps through hoses. The water pumps pump oil liquid out of the oil tank and pump it into the high-pressure oil channels, and then input it into the clamping mechanism through hoses. A low-pressure oil channel is arranged on the distribution block, and the low-pressure oil channel receives the oil liquid flowing back from the clamping mechanism and inputs it into the oil tank.

[0015] The present invention has the following beneficial effects:

[0016] 1. When the first conductive column and the second conductive column are squeezed, the contact surface deforms to form a tight fit. This deformation consists of two parts. One part is the deformation of the tops of the first conductive column and the second conductive column under force, and the other part is the deformation of the contact surface of the wiring terminal of the circuit breaker under force. The generation of this deformation can, on the one hand, squeeze out air to prevent the formation of electrolytes from moisture in the air, resulting in electrochemical corrosion between copper and aluminum, and on the other hand, reduce the contact resistance and lower the heat generation.

[0017] 2. The frustum-shaped first conductive column and second conductive column have a large contact area with the conductive block, the connecting part, and the pressing block, effectively transferring heat quickly.

[0018] 3. Through the mutual cooperation of the silicone pad and the pressing block, the highly insulating silicone grease paste is squeezed into the cavity formed by the contact surface between the silicone pad, the first conductive column / second conductive column, and the wiring terminal of the circuit breaker, thus preventing air from entering, avoiding electrochemical corrosion, and improving the reliability of the connection.

[0019] 4. The clamping mechanism can not only conduct current but also carry out oil circulation cooling through the grooves provided therein, thereby reducing the temperature at the first conductive column, the second conductive column, and the wiring terminal of the circuit breaker, further improving the reliability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Showing the three-dimensional view of the rare earth aluminum alloy copper busbar of the present invention

[0021] Figure 2 Showing the three-dimensional view of the conductive block of the present invention

[0022] Figure 3 Showing the three-dimensional view of the pressing block of the present invention

[0023] Figure 4 Showing the three-dimensional view of the clamping mechanism of the present invention

[0024] Figure 5 Showing the three-dimensional view of the silicone pad of the present invention

[0025] Figure 6 Showing the three-dimensional view of the switchgear cabinet of the present invention

[0026] Figure 7 Showing the present invention Figure 6 Enlarged view at the circled area

[0027] Figure 8 Showing the three-dimensional view of the distribution block of the present invention

[0028] In the figure: body 1, connecting part 101, first mounting hole 102, first mating hole 103, second mating hole 104, conductive block 2, second mounting hole 201, first wedge block 202, first conductive post 3, second conductive post 4, pressing block 5, third mating hole 501, fourth mating hole 502, first glue storage groove 503, second glue storage groove 504, second wedge block 505, third mounting hole 506, clamping mechanism 6, frame body 601, wedge surface 602, groove 603, cover plate 604, liquid inlet pipe 605, liquid outlet pipe 606, silicone pad 7, first protrusion 701, second protrusion 702, fifth mating hole 703, fourth mounting hole 704, cabinet body 8, circuit breaker 9, circulation mechanism 10, oil tank 1001, water pump 1002, distribution block 1003, oil hole 1004, high-pressure oil passage 1005, low-pressure oil passage 1006, temperature sensor 1007. Specific embodiments

[0029] As Figure 1 shown, a rare earth aluminum alloy copper bar includes a body 1 made of rare earth aluminum alloy. At least one end of the body 1 is provided with a connecting part 101. The connecting part 101 is provided with a first mounting hole 102. It further includes a conductive block 2. The conductive block 2 is provided with a second mounting hole 201 corresponding to the first mounting hole 101. A plurality of first conductive posts 3 are connected along the circumferential direction of the second mounting hole 201 on the conductive block 2. A plurality of second conductive posts 4 are connected in the area of the conductive block 2 far from the second mounting hole 201. The shapes of the first conductive posts 3 and the second conductive posts 4 are frustum cones. The height of the second conductive posts 4 is greater than the height of the first conductive posts 3. The body 1 is respectively provided with a first mating hole 103 and a second mating hole 104 that cooperate with the first conductive posts 3 and the second conductive posts 4. The upper end of the connecting part 101 is provided with a pressing block 5. The pressing block 5 is provided with a third mating hole 501 and a fourth mating hole 502 that cooperate with the first conductive posts 3 and the second conductive posts 4. Clamping mechanisms 6 are symmetrically arranged on the left and right sides of the pressing block 5 and the conductive block 2. The clamping mechanisms 6 press the pressing block 5, the connecting part 101, and the conductive block 2 tightly. The material of the conductive block 2 is rare earth aluminum alloy, and the material of the pressing block 5 is rare earth aluminum alloy.

[0030] In this embodiment, when the clamping mechanism 6 clamps the pressing block 5, the connecting portion 101, and the conductive block 2, the first conductive posts 3 respectively pass through the first fitting holes 103 and the third fitting holes 501, and the second conductive posts 4 respectively pass through the second fitting holes 104 and the fourth fitting holes 502. Due to the clamping effect of the clamping mechanism 6 on the pressing block 5 and the conductive block 2, the frustum-shaped first conductive posts 3 are in complete contact with the inner surfaces of the first fitting holes 103 and the third fitting holes 501, and the frustum-shaped second conductive posts 4 are in complete contact with the inner surfaces of the second fitting holes 104 and the fourth fitting holes 502. On the one hand, the contact resistance is reduced, and on the other hand, the close contact can quickly conduct the heat on the first conductive posts 3 and the second conductive posts 4.

[0031] In this embodiment, as Figure 6 shown, bolts are used to pass through the first mounting holes 102, the second mounting holes 201, the third mounting holes 506, and the connection terminals of the circuit breaker 9. When the bolts are tightened, the second conductive posts 4 in the area far from the second mounting holes 201 first come into contact with the connection terminals of the circuit breaker 9. As the tightening degree increases, the first conductive posts 3 around the second mounting holes 201 also come into contact with the connection terminals of the circuit breaker 9 until the set bolt torque is reached. During this process, the first conductive posts 3 and the second conductive posts 4 are stressed and extruded, and the contact surfaces are deformed to form a tight fit. This deformation consists of two parts. One part is the deformation of the tops of the first conductive posts 3 and the second conductive posts 4 under stress, and the other part is the deformation of the contact surfaces of the connection terminals of the circuit breaker 9. The generation of this deformation can, on the one hand, squeeze out air to prevent the formation of electrolytes from moisture in the air, resulting in electrochemical corrosion between copper and aluminum, and on the other hand, reduce the contact resistance. Through temperature rise experiments, it is found that when the height of the second conductive posts 4 is 0.2 - 0.3 mm greater than the height of the first conductive posts 3, the effect is the best.

[0032] Of course, the first conductive posts 3 and the second conductive posts 4 and the conductive block 2 can be connected by threads, or can be riveted, or can be directly machined on the conductive block 2 using a machining center.

[0033] In other embodiments, in order to further avoid electrochemical corrosion between the first conductive posts 3, the second conductive posts 4 and the connection terminals of the circuit breaker 9, the first conductive posts 3 and the second conductive posts 4 are subjected to tin plating treatment, and the coating thickness is 8 - 10 μm.

[0034] In other embodiments, in order to achieve a better connection effect, the tops of the first conductive posts 3 and the second conductive posts 4 are arc-shaped, with the middle of the arc being high and the periphery being low, and the distance between the highest point in the middle of the arc and the edge is 0.2 mm.

[0035] In this embodiment, during actual use, since the shapes of the first conductive post 3 and the second conductive post 4 are frustum cones, their bottom areas are large while their top areas are small. The large bottom areas can significantly increase the contact area and improve the overcurrent capacity. By increasing the number of the first conductive posts 3 and the second conductive posts 4, the overcurrent capacity at the top can be improved. At the same time, since the main body parts of the conductive block 2, the connecting part 101, the pressing block 5, and the clamping mechanism 6, i.e., the frame body 601, are all made of rare earth aluminum alloy, they can all conduct current and are closely attached to each other, further improving the overcurrent capacity. Moreover, the frustum cone-shaped first conductive post 3 and second conductive post 4 have a large contact area with the conductive block 2, the connecting part 101, and the pressing block 5, effectively transferring heat quickly, so as to dissipate heat through the clamping mechanism 6, further ensuring the reliability of the work.

[0036] As Figure 2 , Figure 5 , Figure 6 As shown, first wedge-shaped blocks 202 are provided on the left and right sides of the conductive block 2, and second wedge-shaped blocks 505 are provided on the left and right sides of the pressing block 5. The clamping mechanism 6 includes a frame body 601 made of rare earth aluminum alloy. The frame body 601 is in a "C" shape, and wedge-shaped surfaces 602 that cooperate with the first wedge-shaped blocks 202 and the second wedge-shaped blocks 505 are respectively provided on the upper and lower surfaces within its opening. By pushing the frame body 602 to slide along the first wedge-shaped blocks 202 and the second wedge-shaped blocks 505, the pressing block 5, the connecting part 101, and the conductive block 2 are moved closer to each other until they are pressed tightly. A groove 603 is provided on the other side of the frame body 601, and a cover plate 604 is provided outside the groove 603. A liquid inlet pipe 605 and a liquid outlet pipe 606 are provided at the bottom of the frame body 601, and the cavities of the liquid inlet pipe 605 and the liquid outlet pipe 606 communicate with the groove 603 respectively.

[0037] In this embodiment, during assembly, the first conductive posts 3 on the conductive block 2 respectively pass through the first mating holes 103 on the connecting part 101 and the third mating holes 501 on the pressing block 5, and the second conductive posts 4 respectively pass through the second mating holes 104 on the connecting part 101 and the fourth mating holes 502 on the pressing block 5. The upper and lower two wedge-shaped surfaces 602 within the frame body 601 are respectively brought into contact with the first wedge-shaped blocks 202 on the conductive block 2 and the second wedge-shaped blocks 505 on the pressing block 5. By pushing the frame body 601 to move, the conductive block 2 and the pressing block 5 are moved closer to each other. By setting the moving distance of the frame body 601, the pressure between the frame body 601 and the conductive block 2 and the pressing block 5 can be adjusted, so as to adjust the tightness between the first conductive post 3 and the first mating hole 103, the third mating hole 501, the second conductive post 4 and the second mating hole 104, the fourth mating hole 502, thereby reducing the contact resistance and improving the heat conduction efficiency.

[0038] In this embodiment, in order to further improve the heat dissipation efficiency, the cavity formed between the groove 603 and the cover plate 604 is used as an oil storage cavity, and insulating oil is input through the liquid inlet pipe 605 and output through the liquid outlet pipe 606 to achieve efficient heat dissipation, avoid loosening of the connection part caused by high-temperature creep, and improve the reliability of the connection.

[0039] As Figure 3 , Figure 5 shown, the pressing block is further provided with a first glue storage groove 503 and a second glue storage groove 504. The first glue storage groove 503 is opened on the top surface of the pressing block 5, and the first glue storage groove 503 communicates with the third mating hole 501. The second glue storage groove 504 is opened on the top surface of the pressing block 5, and the second glue storage groove 504 communicates with the fourth mating hole 502. The first glue storage groove 503 and the second glue storage groove 504 are filled with high-insulating silicone grease paste. A silicone gasket 7 is provided on the top of the pressing block 5. The bottom of the silicone gasket 7 is respectively provided with a number of first protrusions 701 and a number of second protrusions 702 that cooperate with the first glue storage groove 503 and the second glue storage groove 504. The first protrusions 701 and the second protrusions 702 extend into the first glue storage groove 503 and the second glue storage groove 504 to extrude the silicone grease paste.

[0040] Among them, in order to adapt to the installation, the silicone gasket 7 is provided with a fourth mounting hole 704 corresponding to the first mounting hole 102, and the silicone gasket 7 is provided with a fifth mating hole 703. The diameter of the fifth mating hole 703 is larger than the diameters of the first conductive post 3 and the second conductive post 4.

[0041] In this embodiment, the silicone gasket 7 is placed on the pressing block 5, and the first protrusions 701 and the second protrusions 702 respectively correspond to the first glue storage groove 503 and the second glue storage groove 504. When the bolt is tightened for installation, the first protrusions 701 and the second protrusions 702 extend into the first glue storage groove 503 and the second glue storage groove 504 to extrude the high-insulating silicone grease paste. Since the first conductive post 3 and the second conductive post 4 are pressed against each other under the action of the clamping mechanism 6 with the pressing block 5, the silicone grease paste can only move upward along the first conductive post 3 and the second conductive post 4. At the same time, due to the extrusion effect between the first conductive post 3 and the second conductive post 4 and the connection terminal of the circuit breaker 9, the silicone grease paste cannot enter the contact surface between the first conductive post 3 and the second conductive post 4 and the connection terminal of the circuit breaker 9, and can only accumulate in the space composed of the fifth mating hole 703, the first conductive post 3 / second conductive post 4 and the connection terminal of the circuit breaker 9, thereby isolating air and dust from entering the contact surface and further avoiding the electrochemical corrosion between copper and aluminum.

[0042] Among them, a number of independently arranged first protrusions 701 and second protrusions 702 respectively cooperate with the first glue storage tank 503 and the second glue storage tank 504. By adjusting the number of the first protrusions 701 and the second protrusions 702, the extrusion amount of the silicone grease paste can be controlled to prevent waste caused by excessive accumulation.

[0043] To further improve the installation reliability, a high-hardness silicone pad 7 with a Shore hardness of 60A - 70A is selected. It has a small compression deformation amount and is arranged between the pressure block 5 and the terminal of the circuit breaker 9. It compensates for the gap generated by the slight loosening of the deformation compensation bolt, effectively improving the installation reliability. At the same time, the deformation of the silicone pad 7 seals the contact surface between the silicone pad 7 and the terminal of the circuit breaker 9 to prevent air from entering, and further avoids the electrochemical corrosion between copper and aluminum.

[0044] Such as Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 As shown in

[0045] In this embodiment, the number of rare earth aluminum alloy copper bars is six, which are respectively connected to the six terminals of the circuit breaker 9 through bolt groups. To adapt to this installation method, the number of oil holes on the distribution block 1003 is twelve. Six of the oil holes 1004 are connected to the liquid outlet pipe 606 in the clamping mechanism 6 through hoses, for receiving the oil fluid flowing back from the groove 603, and are input into the oil tank 1001 through three non - communicating low - pressure oil channels 1006. The other six oil holes 1004 are connected to the liquid inlet pipe 605 in the clamping mechanism 6 through hoses. The water pump 1002 pumps the oil fluid out of the oil tank 1001 and pumps it into the high - pressure oil channel 1005. The pressure in the high - pressure oil channel 1005 increases and the oil fluid is input into the groove 603 through the liquid inlet pipe 605. Since two water pumps 1002 respectively correspond to two high - pressure oil channels 1005, the number of oil holes 1004 connected to the high - pressure oil channel 1005 can be designed according to actual needs. In this embodiment, three oil holes 1004 are connected to one high - pressure oil channel 1005, so as to improve the flow rate of a single oil hole 1004 by reducing the load of a single water pump 1002 (the number of oil holes 1004 connected to the liquid inlet pipe 605), thereby improving the heat dissipation efficiency. At the same time, the two separately arranged high - pressure oil channels 1005 and the three non - communicating low - pressure oil channels 1006 can quickly conduct fault screening, so as to quickly judge the oil circuit where the fault occurs and improve the maintenance efficiency.

[0046] During the cyclic operation, since the circuit breaker 9 is located in the middle of the cabinet body 8, the water pump 1002 pumps the oil fluid out of the oil tank 1001 and pumps it into the high - pressure oil channel 1005. The pressure in the high - pressure oil channel 1005 increases and the oil fluid is input into the groove 603 through the liquid inlet pipe 605. Since the pressure in the groove 603 increases as the incoming oil fluid increases, therefore, under the action of pressure and gravity, the oil fluid in the groove 603 flows into the oil hole 1004 through the liquid outlet pipe 606 and then is input into the oil tank 1001 through the low - pressure oil channel 1006. Repeating this process realizes the circulation of the oil fluid, thereby achieving efficient heat dissipation.

[0047] To further improve the heat dissipation effect, a temperature sensor 1007 is provided on the oil tank 1001, which is used to detect the temperature of the insulating oil in the oil tank 1001 in real time, so as to adjust the rotation speed of the water pump 1002 for temperature control.

[0048] The working principle of the present invention is as follows: First, the conductive block 2, the connecting part 101 and the pressing block 5 are tightly pressed together by the clamping mechanism 6, and then the rare earth aluminum alloy copper bar is connected to the wiring terminal of the circuit breaker 9 by bolts. During this process, the first conductive column 3 and the second conductive column 4 are squeezed, and the contact surface with the wiring terminal of the circuit breaker 9 deforms to form a tight fit. Moreover, since the heights of the first conductive column 3 and the second conductive column 4 are different, the first conductive column 3 near the bolt is subjected to greater force and has a lower height, while the second conductive column 4 far from the bolt is subjected to less force and has a higher height. In this way, the second conductive column 4 first contacts the wiring terminal of the circuit breaker 9 and deforms, and then the first conductive column 3 contacts the wiring terminal of the circuit breaker 9 and deforms, so as to match the working condition with greater pressure near the bolt, avoid poor contact at the far end. At the same time, through the mutual cooperation of the silica gel pad 7 and the pressing block 5, the silicone grease with high insulation performance is squeezed into the cavity formed by the contact surface between the silica gel pad 7, the first conductive column 3 / second conductive column 4 and the wiring terminal of the circuit breaker 9, so as to prevent air from entering, avoid electrochemical corrosion and improve the connection reliability. In order to dissipate heat quickly and improve reliability, the water pump 1002 in the circulation mechanism 10 pumps the insulating oil liquid out of the oil tank 1001 and pumps it into the high-pressure oil passage 1005. The pressure in the high-pressure oil passage 1005 increases, and the oil liquid is input into the groove 603 through the liquid inlet pipe 605. Since the pressure in the groove 603 increases as the incoming oil liquid increases, under the action of pressure and gravity, the oil liquid in the groove 603 flows into the oil hole 1004 through the liquid outlet pipe 606 and then is input into the oil tank 1001 through the low-pressure oil passage 1006, realizing the circulation of the insulating oil liquid, thereby reducing the temperature at the first conductive column, the second conductive column and the wiring terminal of the circuit breaker, avoiding creep caused by high temperature, and further improving the working reliability.

[0049] The present invention is not limited to the above specific embodiments. Those of ordinary skill in the art starting from the above concepts and making various transformations without creative labor fall within the protection scope of the present invention.

Claims

1. A rare earth aluminum alloy copper row, comprising a body made of rare earth aluminum alloy, at least one end of the body is provided with a connecting portion, and a first mounting hole is opened in the connecting portion, characterized in that It further includes a conductive block, which is provided with a second mounting hole corresponding to the first mounting hole. A number of first conductive posts are connected along the circumferential direction of the second mounting hole on the conductive block. A number of second conductive posts are connected in the area of the conductive block far from the second mounting hole. The shapes of the first conductive posts and the second conductive posts are frustum of a cone, and the height of the second conductive posts is greater than that of the first conductive posts. The main body is respectively provided with a first mating hole and a second mating hole that cooperate with the first conductive posts and the second conductive posts. A pressing block is provided at the upper end of the connecting portion. The pressing block is provided with a third mating hole and a fourth mating hole that cooperate with the first conductive posts and the second conductive posts. Clamping mechanisms are symmetrically arranged on the left and right sides of the pressing block and the conductive block, and the clamping mechanisms press the pressing block, the connecting portion, and the conductive block tightly.

2. The rare earth aluminum alloy copper row according to claim 1, characterized in that The material of the conductive block is dilute aluminum alloy.

3. The rare earth aluminum alloy copper bar according to claim 2, wherein The material of the pressing block is rare earth aluminum alloy.

4. The rare earth aluminum alloy copper row according to claim 3, wherein First wedge-shaped blocks are arranged on the left and right sides of the conductive block.

5. The rare earth aluminum alloy copper row according to claim 3, characterized in that The pressing block is further provided with a first glue storage groove and a second glue storage groove. The first glue storage groove is opened on the top surface of the pressing block, and the first glue storage groove communicates with the third mating hole. The second glue storage groove is opened on the top surface of the pressing block, and the second glue storage groove communicates with the fourth mating hole. The first glue storage groove and the second glue storage groove are filled with silicone grease paste.

6. The rare earth aluminum alloy copper bar according to claim 4, wherein Second wedge-shaped blocks are arranged on the left and right sides of the pressing block.

7. The rare earth aluminum alloy copper row according to claim 5, wherein A silicone rubber pad is provided on the top of the pressing block. A number of first protrusions and a number of second protrusions that cooperate with the first glue storage groove and the second glue storage groove are respectively provided at the bottom of the silicone rubber pad. The first protrusions and the second protrusions extend into the first glue storage groove and the second glue storage groove to extrude the silicone grease paste.

8. The rare earth aluminum alloy copper bar according to claim 6, wherein The clamping mechanism includes a frame body made of rare earth aluminum alloy. The frame body is in a "C" shape, and wedge-shaped surfaces that cooperate with the first wedge-shaped block and the second wedge-shaped block are respectively provided on the upper and lower surfaces of its opening. Push the frame body to slide along the first wedge-shaped block and the second wedge-shaped block, so that the pressing block, the connecting portion, and the conductive block approach each other until they are tightly pressed. A groove is provided on the other side of the frame body, and a cover plate is provided outside the groove. An inlet pipe and an outlet pipe are provided at the bottom of the frame body, and the cavities of the inlet pipe and the outlet pipe communicate with the groove respectively.

9. A switchgear cabinet, comprising a cabinet body, wherein a circuit breaker is installed in the cabinet body, and the circuit breaker is connected with a rare earth aluminum alloy copper bar, characterized in that The rare earth aluminum alloy copper row is the rare earth aluminum alloy copper row according to any one of claims 1 to 8.

10. The switchgear according to claim 9, characterized in that A circulating mechanism is further provided in the cabinet. The circulating mechanism includes an oil tank filled with insulating oil. Two water pumps are fixed on the top of the oil tank. The inlets of the water pumps are connected to the oil tank through hoses. A distribution block is installed on the oil tank. A number of oil holes are provided on the distribution block, and the oil holes are connected to the clamping mechanism through hoses. Two high-pressure oil channels are provided on the distribution block, and the high-pressure oil channels are connected to the outlets of the water pumps through hoses. The water pumps pump the oil liquid out of the oil tank and pump it into the high-pressure oil channels, and then input it into the clamping mechanism through hoses. A low-pressure oil channel is provided on the distribution block, and the low-pressure oil channel receives the oil liquid flowing back from the clamping mechanism and inputs it into the oil tank.

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