Substitution cable for secondary of electric furnace transformer

Abstract

The application provides a secondary compensation cable for an electric arc furnace transformer, and relates to the technical field of transformer cables.The secondary compensation cable comprises a cable protective sleeve, a connecting mechanism and a second hard copper pipe are respectively connected to the inner part of both ends of the cable protective sleeve, the connecting mechanism comprises a mounting assembly, the mounting assembly is fixedly sleeved in the inner part of a conductive copper ring, a fixing assembly is arranged at the end of the mounting assembly away from the cable protective sleeve, a first conductive block and a second conductive block are respectively arranged in the inner part of the first hard copper pipe and the second hard copper pipe, a first copper nut and a second copper nut are respectively threadedly connected to one end of the first hard copper pipe and the second hard copper pipe, and a plurality of soft copper wires are fixedly connected to the opposite side of the first conductive block and the second conductive block.The first conductive block is movably arranged in the first hard copper pipe through the arrangement of the first hard copper pipe and the mounting assembly, the two ends can be conveniently mounted and fixed, and the situation that a conductive original element is burnt out due to a long mounting time is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer cables, in particular to a secondary compensation cable for a transformer of an ore-fired furnace. Background Art

[0002] The water-cooling cable is installed at the outlet of the secondary side of the furnace transformer. It is mainly used to connect the secondary side of the electric furnace transformer and the secondary short-circuit network. It is an indispensable component of the secondary short-circuit network. Its main function is to transmit the low voltage and high current on the secondary side of the furnace transformer to the controller. The controller is connected to the electrode, and then the electrode converts the electrical energy into heat energy for smelting. Therefore, the quality of the water-cooling cable plays a key role.

[0003] However, some water-cooled cables produced by some factories have the following problems during use:

[0004] The on-site installation position is limited. That is, when installing the water-cooling cable, the total length of the water-cooling cable is fixed, so the total length of the water-cooling cable is fixed after the copper nut is tightened. However, the gap at the actual installation position on site is small, resulting in the water-cooling cable being unable to be installed after one end is installed. This is because the hole depth of the water-cooling cable is fixed and there is no space for movement. In addition, the water-cooling cable is inherently short and thick and not easy to bend. Therefore, it is difficult and time-consuming to install on site. If this water-cooling cable is still used, the problem of disassembling and installing the water-cooling cable cannot be fundamentally solved. If this water-cooling cable is not used, it will cause waste of materials and bring great losses to the factory. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the shortcomings of the existing technology, the present invention provides a secondary compensation cable for an electric arc furnace transformer, which can effectively solve the problem that the installation position of finished cables produced by some factories is restricted during use, resulting in difficulty and long installation time.

[0007] (2) Technical solution

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] The utility model provides a secondary compensation cable of the substation of the electric furnace, including cable protective sheath, the inside of cable protective sheath both ends is respectively equipped with the connecting mechanism and the second hard copper pipe of being connected with, the connecting mechanism includes installation assembly, fixed assembly and first hard copper pipe, the inner wall of first hard copper pipe and second hard copper pipe is fixedly connected with sealing ring respectively, the inner wall of sealing ring is fixedly connected with the electrically conductive copper ring respectively, installation assembly fixedly covers in the electrically conductive copper ring inside, the one end of installation assembly away from cable protective sheath is provided with fixed assembly, the inside of first hard copper pipe and second hard copper pipe is provided with first electrically conductive block and second electrically conductive block respectively, the side of first electrically conductive block and second electrically conductive block away from cable protective sheath is provided with first connecting plate and second connecting plate respectively, the pipe body of first hard copper pipe and second hard copper pipe away from cable protective sheath one end is respectively screwed with first copper nut and second copper nut, the opposite side of first electrically conductive block and second electrically conductive block is fixedly connected with a plurality of soft copper wire.

[0010] As preferred, the first hard copper pipe and the second hard copper pipe are respectively provided with a first limiting groove in the pipe body near the cable protective sheath, the inner wall of the cable protective sheath is respectively fixedly connected with a first protruding ring corresponding to the first limiting groove, the first protruding ring is correspondingly clamped with the first limiting groove, and the cable protective sheath is fixedly covered outside the pipe body of the first hard copper pipe and the second hard copper pipe through the locking copper ring.

[0011] As preferred, the installation assembly includes a fixed block and a telescopic rod, the inside of the fixed block is provided with a movable slot, one end of the telescopic rod is fixedly connected with the inner wall of the movable slot, the telescopic rod is provided with a spring outside the rod body, and one end of the telescopic rod and the spring away from the inner wall of the movable slot is fixedly connected with a limiting plate.

[0012] As preferred, the fixed assembly includes a fixed plate and a first gear, the inside of the fixed plate on both sides is respectively provided with an installation slot, the first gear is rotatably connected inside the installation slot, the first gear is covered outside the middle rod body of the two-way threaded rod, the fixed plate on both sides is respectively fixedly connected with two installation blocks, and the inside of each installation block is rotatably connected with a second gear.

[0013] As preferred, the second gear is engaged with the first gear, the threaded sleeve is respectively screwed outside the rod body at both ends of the two-way threaded rod, the threaded sleeve is movably connected with the inner wall of the fixed block, the fixed plate is attached to one end of the fixed block, and the fixed plate is penetratedly connected with a supporting block.

[0014] As preferred, one end of the supporting block is fixedly connected with the limiting plate, the side of the limiting plate near the supporting block is abutted with the fixed plate, one end of the supporting block away from the limiting plate is fixedly connected with the first electrically conductive block, and the side of the first electrically conductive block away from the supporting block is fixedly connected with a first connecting block.

[0015] As preferred, the second conductive block is fixedly connected with a second connecting block away from one side of the soft copper wire, and the first connecting plate and the second connecting plate are fixedly connected with the first connecting block and the second connecting block respectively through screws.

[0016] As preferred, a water channel is formed in the middle of the end of the fixed block away from the support block, and a water pipe is communicated with one side of the water channel.

[0017] As preferred, threaded connection parts are respectively arranged outside the pipe bodies of the first and second hard copper pipes away from the end of the cable protective sleeve, and the first and second copper nuts are respectively sleeved outside the two threaded connection parts.

[0018] As preferred, the first and second connecting plates are respectively provided with second limiting grooves away from one side of the soft copper wire, and the first and second copper nuts are respectively fixedly connected with second convex rings corresponding to the second limiting grooves at the inner walls of the ends of the first and second copper nuts.

[0019] As preferred, compared with the prior art, the present application has the following beneficial effects:

[0020] 1. By arranging the mounting assembly, the limiting plate is connected with the support block, and when the support block is pushed towards the direction close to the limiting plate, the first conductive block and the first connecting block move synchronously. During installation, the first copper nut and the first connecting plate are first sleeved outside the connecting copper pipe on one side of the transformer, then the first hard copper pipe is sleeved outside the copper pipe, the second connecting head is connected with the connecting pipe, is not locked, then the second connecting head is pushed towards the direction close to the support block, so that the second connecting head enters the inside of the first hard copper pipe, and the first connecting head moves out of a distance from the inside of the second hard copper pipe, which facilitates connection. Then the second connecting plate and the second copper nut are sleeved outside the other copper pipe, and the first connecting head is connected with the other copper pipe. After both sides are sleeved, the copper nut is used for connection and locking. In this way, the installation problem is solved, and the situation that the conductive element is burned out due to long installation time is effectively avoided.

[0021] 2. By making the hard copper pipe long, i.e. making the first hard copper pipe long, and then digging the hole of the first hard copper pipe deep, and making the soft copper wire short, in the case of not changing the actual size, there is enough movable space during installation, so that the installation is facilitated, and the product is not wasted, and a large amount of cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the secondary compensation cable of the submerged arc furnace transformer.

[0023] Figure 2Front view structural schematic diagram of secondary compensation cable of the invented submerged arc furnace transformer;

[0024] Figure 3 Front view structural schematic diagram of secondary compensation cable of the invented submerged arc furnace transformer; Figure 2 A-A section structural schematic diagram of the invented secondary compensation cable of the submerged arc furnace transformer;

[0025] Figure 4 A-A section structural schematic diagram of the invented secondary compensation cable of the submerged arc furnace transformer; Figure 3 C structure enlarged view of the invented secondary compensation cable of the submerged arc furnace transformer;

[0026] Figure 5 C structure enlarged view of the invented secondary compensation cable of the submerged arc furnace transformer; Figure 3 D structure enlarged view of the invented secondary compensation cable of the submerged arc furnace transformer;

[0027] Figure 6 B-B section structural schematic diagram of the invented secondary compensation cable of the submerged arc furnace transformer; Figure 2 B-B section structural schematic diagram of the invented secondary compensation cable of the submerged arc furnace transformer;

[0028] Figure 7 E structure enlarged view of the invented secondary compensation cable of the submerged arc furnace transformer; Figure 6 E structure enlarged view of the invented secondary compensation cable of the submerged arc furnace transformer;

[0029] Figure 8 Local structure schematic diagram of fixed assembly of the invented secondary compensation cable of the submerged arc furnace transformer.

[0030] In the figure: 1, cable protection sleeve; 2, connecting mechanism; 201, mounting assembly; 2011, fixed block; 2012, movable slot; 2013, telescopic rod; 2014, spring; 2015, limiting plate; 202, fixed assembly; 2021, fixed plate; 2022, mounting slot; 2023, first gear; 2024, second gear; 2025, mounting block; 2026, bidirectional threaded rod; 2027, threaded sleeve; 203, first hard copper pipe; 204, water channel; 205, first limiting slot; 206, threaded connection part; 3, second hard copper pipe; 4, second copper nut; 5, locking copper ring; 6, first connecting head; 7, first copper nut; 8, water pipe; 9, sealing ring; 10, conductive copper ring; 11, first connecting block; 12, supporting block; 13, first conductive block; 14, first connecting plate; 15, second connecting head; 16, second conductive block; 17, second connecting block; 18, second connecting plate; 19, first protruding ring; 20, soft copper wire; 21, second protruding ring; 22, second limiting slot. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example

[0033] like Figures 1-8 As shown, the secondary compensation cable of the transformer of the submerged arc furnace includes a cable protective sleeve 1, and the two ends of the cable protective sleeve 1 are respectively sleeved with a connecting mechanism 2 and a second hard copper tube 3. The connecting mechanism 2 includes an installation component 201, a fixing component 202 and a first hard copper tube 203. The inner walls of the first hard copper tube 203 and the second hard copper tube 3 are respectively fixedly connected with a sealing ring 9, and the inner walls of the sealing ring 9 are respectively fixedly connected with a conductive copper ring 10. The installation component 201 is fixedly sleeved inside the conductive copper ring 10, and the installation component 201 is away from the cable protective sleeve 1. A fixing component 202 is provided at the end, and a first conductive block 13 and a second conductive block 16 are respectively provided inside the first hard copper tube 203 and the second hard copper tube 3. A first connecting plate 14 and a second connecting plate 18 are respectively provided on the side of the first conductive block 13 and the second conductive block 16 away from the cable protective sleeve 1. The first hard copper tube 203 and the second hard copper tube 3 at one end away from the cable protective sleeve 1 are respectively threadedly connected to the outside of the tube body, and a plurality of soft copper wires 20 are fixedly connected to the opposite side of the first conductive block 13 and the second conductive block 16.

[0034] It should be noted that the first connecting plate 14 and the second connecting plate 18 are both made of insulating material, and are respectively abutted outside the sealing ring 9 and the conductive copper ring 10, and are abutted at one end of the sealing ring 9 and the conductive copper ring 10 by the inner wall of the first copper nut 7 and the second copper nut 4, so that the first connecting plate 14, the second connecting plate 18 and the two-end sealing ring 9 and the conductive copper ring 10 can be fixed at the same time, wherein the first hard copper pipe 203 and the second hard copper pipe 3 are the same in material and structure, and the difference is that the length of the first hard copper pipe 203 is greater than that of the second hard copper pipe 3. When the water-cooled cable is installed, the total length of the water-cooled cable is 830mm, and the total length of the water-cooled cable is 800mm after the copper nut is locked. The gap between the actual installation position on site is only between 720-780mm, which means that after the water-cooled cable is installed on one end, the other end cannot be installed because the hole depth of the water-cooled cable is only 90mm and there is no movable space. Moreover, the water-cooled cable is short and thick, and is not easy to bend. The on-site installation is difficult and time-consuming. Therefore, the first hard copper pipe 203 is made longer, that is, the first hard copper pipe 203 in the figure, and the hole of the first hard copper pipe 203 is deepened from the original hole depth of 90mm to a hole depth of 190mm. The soft copper wire 20 is made shorter. In the case of not changing the actual size, we have 100mm of movable space when installing, so that the installation is convenient and does not waste the product and save a lot of cost.

[0035] In the embodiment, the first hard copper pipe 203 and the second hard copper pipe 3 are respectively provided with a first limiting groove 205 in the pipe body near one end of the cable protective sleeve 1, the inner wall of the pipe of the cable protective sleeve 1 is fixedly connected with a first protruding ring 19 corresponding to the first limiting groove 205, the first protruding ring 19 is clamped with the first limiting groove 205, and the cable protective sleeve 1 is fixedly sleeved outside the pipe body of the first hard copper pipe 203 and the second hard copper pipe 3 through the locking copper ring 5.

[0036] In the specific setting, the first protruding ring 19 arranged inside the cable protective sleeve 1 is clamped with the first limiting groove 205 arranged at one end of the first hard copper pipe 203 and the second hard copper pipe 3, and then the locking copper ring 5 is tightly buckled outside the first protruding ring 19, so that the tightness of the connection between the first protruding ring 19 and the first limiting groove 205 is improved, the inside of the cable protective sleeve 1 is in a closed state, and the copper wire aging is delayed.

[0037] In the embodiment, the installation assembly 201 includes a fixed block 2011 and a telescopic rod 2013, the fixed block 2011 is internally provided with a movable slot 2012, one end of the telescopic rod 2013 is fixedly connected with the inner wall of the movable slot 2012, the telescopic rod 2013 is sleeved with a spring 2014 outside the rod body, and one end of the telescopic rod 2013 and the spring 2014 away from the inner wall of the movable slot 2012 is fixedly connected with a limiting plate 2015.

[0038] During the specific setting, by setting the installation component 201, the limit plate 2015 is connected to the support block 12. When the support block 12 is pushed in the direction close to the limit plate 2015, the support block 12 enters the movable groove 2012, and the first conductive block 13 and the first connecting block 11 move synchronously. During installation, the first copper nut 7 and the first connecting plate 14 are first sleeved on the outside of the connecting copper tube on one side of the transformer, and then the first hard copper tube 203 is sleeved on the outside of the copper tube, and the second connector 15 is connected to the connecting tube without locking it. Then, the second connector 15 is pushed in the direction close to the support block 12, so that the spring 2014 and the telescopic rod 2013 are contracted, and the limit plate 2015 slides a distance inside the movable groove 2012. The second connector 15 is separated from the first hard copper tube 203, so that the first connector 6 moves a distance from the second hard copper tube 3 to facilitate connection. Then the second connecting plate 18 and the second copper nut 4 are put on the outside of the other copper tube, and the first connector 6 is connected to the other copper tube. After both sides are put on, the first connecting plate 14 and the second connecting plate 18 are fixed to the first connecting block 11 and the second connecting block 17 by screws respectively. Finally, the first copper nut 7 and the second copper nut 4 are connected and locked with the threaded connection part 206 at one end of the first hard copper tube 203 and the second hard copper tube 3. This solves the installation problem and effectively avoids the situation where the conductive components are burned out due to a long installation time.

[0039] In this embodiment, the fixing assembly 202 includes a fixing plate 2021 and a first gear 2023. Mounting grooves 2022 are respectively provided inside both sides of the fixing plate 2021. The first gear 2023 is rotatably connected inside the mounting groove 2022. The first gear 2023 is sleeved outside the middle rod body of the bidirectional threaded rod 2026. Two mounting blocks 2025 are respectively fixedly connected on both sides of the fixing plate 2021. A second gear 2024 is rotatably connected inside the mounting block 2025 on each side.

[0040] In this embodiment, the second gear 2024 is engaged with the first gear 2023, and the two ends of the bidirectional threaded rod 2026 are respectively threadedly connected to the outside of the rod body with a threaded sleeve 2027, and the threaded sleeve 2027 is movably connected to the inner wall of the fixed block 2011, and the fixed plate 2021 is fitted with one end of the fixed block 2011, and the support block 12 is connected through the inside of the fixed plate 2021.

[0041] In the specific arrangement, the threaded sleeve 2027 is provided with a protrusion on one side, which is used to prevent the threaded sleeve 2027 from rotating, and the fixed plate 2021 is abutted against one side of the limiting plate 2015, and then the second gear 2024 is rotated to drive the first gear 2023 to rotate, and the first gear 2023 drives the bidirectional threaded rod 2026 to rotate, so that the two threaded sleeves 2027 move away from the first gear 2023, and are abutted against the inside of the fixed block 2011, thereby limiting the fixed plate 2021, and the limiting plate 2015 is limited by the fixed plate 2015, preventing the limiting plate 2015 from protruding from one end of the movable groove 2012, and facilitating the fixing and dismounting of the fixed plate 2021, and facilitating the later maintenance.

[0042] In the embodiment, one end of the supporting block 12 is fixedly connected with the limiting plate 2015, the side close to the supporting block 12 of the limiting plate 2015 is abutted against the fixed plate 2021, the end away from the limiting plate 2015 of the supporting block 12 is fixedly connected with the first conductive block 13, and the side away from the supporting block 12 of the first conductive block 13 is fixedly connected with the first connecting block 11.

[0043] In the embodiment, the side away from the soft copper wire 20 of the second conductive block 16 is fixedly connected with the second connecting block 17, the first connecting plate 14 and the second connecting plate 18 are fixedly connected with the first connecting block 11 and the second connecting block 17 through screws respectively, and the outer sides of the first connecting block 11 and the second connecting block 17 are fixedly connected with the second connecting head 15 and the first connecting head 6 respectively, wherein the first connecting block 11 and the second connecting block 17 are both made of conductive material, are used to connect the first connecting plate 14 and the second connecting plate 18, and are fixed by the two copper nuts, so as to limit and fix the two conductive blocks.

[0044] In the embodiment, the middle part of the end away from the supporting block 12 of the fixed block 2011 is provided with a water channel 204, one side of the water channel 204 is communicated with a water pipe 8, and the water channel 204 is located in the middle of the soft copper wire 20, wherein the surface of the soft copper wire 20 is covered with insulating rubber skin, which plays a role of insulation and sealing water flow.

[0045] In the embodiment, the outer sides of the pipe bodies of the first hard copper pipe 203 and the second hard copper pipe 3 away from the cable protective sleeve 1 are respectively provided with threaded connection parts 206, and the first copper nut 7 and the second copper nut 4 are respectively sleeved outside the two threaded connection parts 206.

[0046] In the embodiment, the first connecting plate 14 and the second connecting plate 18 are respectively provided with second limiting grooves 22 on the sides away from the soft copper wire 20, the first copper nut 7 and the second copper nut 4 are respectively fixedly connected with second convex rings 21 corresponding to the second limiting grooves 22, and the second convex rings 21 abut against the inner walls of the second limiting grooves 22.

[0047] It is found through observation that the discharge and arc of the water-cooled cable always occur on the secondary short net side, and the transformer side does not have such a situation. After technical discussion and analysis, it is found that the problem is caused by the material of the connection, that is, the steel pipe at the connection between the conductive copper ring 10 and the secondary short net. Because the conductive copper ring 10 is in contact with the connecting copper pipe after being locked by the copper nut, a large current passes through. The surface of the conductive copper ring 10 will oxidize over time, and a layer of copper green will be formed on the surface. The generation of copper green will increase the contact resistance. In addition, the water-cooled cable is connected to the secondary short net side through the conductive connection, and the conductivity of the connection between copper and steel is not good due to the difference in material. Therefore, the discharge and arc phenomenon occurs. The outgoing copper pipe of the transformer secondary side is plated with a layer of tin, which plays a key role. Because the copper pipe plated with tin forms a layer of film on the surface of the copper pipe, the strength is improved, and copper oxidation and corrosion are avoided. When the copper ring in the water-cooled cable is connected, the problem of arc discharge is effectively avoided. Therefore, the conductive copper ring 10 in the water-cooled cable is plated with tin, and the entire conductive copper ring 10 and other conductive contact surfaces are coated with conductive paste during installation, further solving the oxidation problem caused by the difference in material.

[0048] The working principle of the subcompensation cable for the secondary side of the submerged arc furnace transformer is as follows:

[0049] In use, firstly, the first protruding ring 19 arranged inside the cable protection sleeve 1 is respectively clamped in the first limiting groove 205 opened at one end of the first hard copper pipe 203 and the second hard copper pipe 3, and then the locking copper ring 5 is tightly buckled outside the first protruding ring 19, so that the inside of the cable protection sleeve 1 is in a closed state, delaying the aging of the copper wire. When installing, the first copper nut 7 and the first connecting plate 14 are sleeved outside the connecting copper pipe on one side of the transformer, and then the first hard copper pipe 203 is sleeved outside the copper pipe, the second connecting head 15 is connected with the connecting pipe, and then the second connecting head 15 is pushed towards the direction close to the supporting block 12, so that the spring 2014 and the telescopic rod 2013 are contracted, the limiting plate 2015 slides in the movable groove 2012 for a distance, so that the second connecting head 15 enters the inside of the first hard copper pipe 203, thereby pushing the first connecting head 6, so that the first connecting head 6 moves out of the inside of the second hard copper pipe 3 for a distance, and then the second connecting plate 18 and the second copper nut 4 are sleeved outside the other copper pipe, and the first connecting head 6 is connected with the other copper pipe. After both sides are sleeved, the first connecting plate 14 and the second connecting plate 18 are respectively fixed with the first connecting block 11 and the second connecting block 17 through screws, and finally the first copper nut 7 and the second copper nut 4 are connected and locked with the threaded connection part 206 at one end of the first hard copper pipe 203 and the second hard copper pipe 3. When it is necessary to maintain the inside of the fixing assembly 202, the first gear 2023 is driven to rotate by rotating the second gear 2024, thereby driving the bidirectional threaded rod 2026 to rotate, so that the two threaded sleeves 2027 respectively move towards the direction close to the first gear 2023, thereby being able to be separated from the contact with the fixing block 2011, and then the fixing plate 2021 can be conveniently disassembled, facilitating maintenance.

[0050] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation manners of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description, and it is impossible to enumerate all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. Subcompensated cable for secondary of an electric arc furnace transformer, comprising a cable sheath (1), characterized in that: The cable protection sleeve (1) is provided with a connecting mechanism (2) and a second hard copper pipe (3) at both ends, the connecting mechanism (2) comprises a mounting assembly (201), a fixing assembly (202) and a first hard copper pipe (203), the inner walls of the first hard copper pipe (203) and the second hard copper pipe (3) are fixedly connected with sealing rings (9), the inner walls of the sealing rings (9) are fixedly connected with conductive copper rings (10), the mounting assembly (201) is fixedly sleeved in the conductive copper ring (10), one end of the mounting assembly (201) away from the cable protection sleeve (1) is provided with the fixing assembly (202), the first hard copper pipe (203) and the second hard copper pipe (3) are provided with a first conductive block (13) and a second conductive block (16) respectively, one side of the first conductive block (13) and the second conductive block (16) away from the cable protection sleeve (1) is provided with a first connecting plate (14) and a second connecting plate (18) respectively, the first hard copper pipe (203) and the second hard copper pipe (3) are threadedly connected with a first copper nut (7) and a second copper nut (4) respectively at one end of the pipe body away from the cable protection sleeve (1), the opposite side of the first conductive block (13) and the second conductive block (16) is fixedly connected with a plurality of soft copper wires (20), the first hard copper pipe (203) and the second hard copper pipe (3) are provided with a first limiting groove (205) in the pipe body near the cable protection sleeve (1), the inner walls of the cable protection sleeve (1) at both ends are fixedly connected with a first convex ring (19) corresponding to the first limiting groove (205), the first convex ring (19) is clamped with the first limiting groove (205), the cable protection sleeve (1) at both ends is fixedly sleeved outside the pipe body of the first hard copper pipe (203) and the second hard copper pipe (3) through a locking copper ring (5), the mounting assembly (201) comprises a fixed block (2011) and an extension rod (2013), the inner part of the fixed block (2011) is provided with a movable groove (2012), one end of the extension rod (2013) is fixedly connected with the inner wall of the movable groove (2012), the extension rod (2013) is sleeved with a spring (2014) outside the rod body, one end of the extension rod (2013) and the spring (2014) away from the inner wall of the movable groove (2012) is fixedly connected with a limiting plate (2015), the fixing assembly (202) comprises a fixed plate (2021) and a first gear (2023), the inner parts of the fixed plate (2021) at both sides are provided with a mounting groove (2022), the first gear (2023) is rotatably connected in the mounting groove (2022), the first gear (2023) is sleeved outside the middle part of the rod body of a double-threaded rod (2026), the fixed plate (2021) at both sides is fixedly connected with two mounting blocks (2025), the mounting block (2025) at each side is rotatably connected with a second gear (2024), the second gear (2024) is engaged with the first gear (2023).The both ends of the bidirectional threaded rod (2026) are respectively connected with threaded sleeves (2027) outside the rod body, the threaded sleeves (2027) are movably connected with the inner wall of the fixed block (2011), the fixed plate (2021) is attached to one end of the fixed block (2011), a supporting block (12) penetrates through the inside of the fixed plate (2021), one end of the supporting block (12) is fixedly connected with a limiting plate (2015), the side close to the supporting block (12) of the limiting plate (2015) is abutted with the fixed plate (2021), and the end away from the limiting plate (2015) of the supporting block (12) is fixedly connected with a first conductive block (13). The side away from the supporting block (12) of the first conductive block (13) is fixedly connected with a first connecting block (11).

2. Submerged arc furnace transformer secondary compensation cable according to claim 1, characterized in that: The second conductive block (16) is fixedly connected with a second connecting block (17) on the side away from the soft copper wire (20), the first connecting plate (14) and the second connecting plate (18) are fixedly connected with the first connecting block (11) and the second connecting block (17) through screws respectively, and the first connecting block (11) and the second connecting block (17) are fixedly connected with a second connecting head (15) and a first connecting head (6) on the outer sides respectively.

3. Submerged arc furnace transformer secondary compensation cable according to claim 1, characterized in that: The fixed block (2011) is provided with a water passing groove (204) in the middle of one end away from the support block (12), one side of the water passing groove (204) is communicated with a water pipe (8), and the water passing groove (204) is located in the middle of the soft copper wire (20).

4. The submerged arc furnace transformer secondary compensation cable of claim 1, wherein: The first hard copper pipe (203) and the second hard copper pipe (3) are respectively provided with threaded connection parts (206) on the pipe bodies of the ends away from the cable protective sleeve (1), and the first copper nut (7) and the second copper nut (4) are respectively sleeved on the outer parts of the two threaded connection parts (206).

5. Submerged arc furnace transformer secondary compensation cable according to claim 1, characterized in that: The first connecting plate (14) and the second connecting plate (18) are respectively provided with second limiting grooves (22) on the sides away from the soft copper wire (20), the first copper nut (7) and the second copper nut (4) are respectively fixedly connected with second convex rings (21) corresponding to the second limiting grooves (22) on the inner walls of the one ends, and the second convex rings (21) abut against the inner walls of the second limiting grooves (22).

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