Top-inserted electrode water jacket and electric melting furnace

Abstract

The invention relates to a top-inserted electrode water jacket and an electric melting furnace. According to the top-inserted electrode water jacket, the electrode bar and the cooling assembly, the electrode bar is provided with the connecting part, and the connecting part is provided with the cooling hole. The cooling assembly comprises an outer pipe, a water inlet pipe and a connecting piece, the water inlet pipe is arranged in the outer pipe, a gap formed between the outer pipe wall of the water inlet pipe and the inner pipe wall of the outer pipe in a matched mode forms a water return channel, the connecting piece is installed at one end of the outer pipe and detachably connected with the connecting part, and the water inlet pipe is provided with a water inlet channel. One end of the water inlet pipe penetrates through the connecting piece to be arranged in the cooling hole, and the other end of the water inlet pipe is used for inputting cooling liquid into the water inlet channel so that the cooling liquid can sequentially flow into the cooling hole and the water return channel through the water inlet channel and flow out of the other end of the outer pipe. The top-inserted electrode water jacket and the electric melting furnace have the advantages of being small in loss and good in cooling effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial smelting equipment, in particular to a top-inserted electrode water jacket and an electric smelting furnace. BACKGROUND

[0002] The electric smelting furnace is widely used in the processing occasions of electric heating and melting of raw materials such as glass, enamel and basalt. The electric smelting furnace is installed with a top-inserted electrode water jacket on the top of a melting pool. Since the raw materials to be melted are directly distributed and scattered on the liquid surface of the melting pool, the liquid surface of the melting pool is an easy-to-erode environment of gas, liquid and solid three phases, which causes great erosion to the top-inserted electrode water jacket.

[0003] Generally, the top-inserted electrode water jacket includes a cooling assembly and an electrode rod. The cooling assembly is connected with the end of the electrode rod through threads. The temperature of the electrode rod is reduced through the heat conduction between the threads of the cooling assembly and the end of the electrode rod, which belongs to indirect cooling. The water is not directly sprayed to the end of the electrode rod. It is difficult to ensure that the end of the electrode rod has a low temperature by using this wrapping type cooling method. Therefore, the top-inserted electrode water jacket of the electric smelting furnace has defects of poor durability and high loss. SUMMARY

[0004] Therefore, it is necessary to provide a top-inserted electrode water jacket and an electric smelting furnace to solve the problems of poor durability and high loss of the top-inserted electrode water jacket.

[0005] The present application provides a top-inserted electrode water jacket, which comprises:

[0006] an electrode rod, the electrode rod is provided with a connecting portion, and the connecting portion is provided with a cooling hole;

[0007] a cooling assembly, the cooling assembly includes an outer pipe, a water inlet pipe and a connecting piece, the water inlet pipe is arranged in the outer pipe, a gap formed between the outer pipe wall of the water inlet pipe and the inner pipe wall of the outer pipe forms a backwater channel, the connecting piece is installed at one end of the outer pipe, the connecting piece is detachably connected with the connecting portion, the water inlet pipe is provided with a water inlet channel, one end of the water inlet pipe is arranged in the cooling hole through the connecting piece, and the other end of the water inlet pipe is used for inputting cooling liquid into the water inlet channel, so that the cooling liquid flows into the cooling hole and the backwater channel in sequence through the water inlet channel, and flows out from the other end of the outer pipe.

[0008] In one of the embodiments, the cooling assembly further comprises a water distributor, the water distributor is installed on the end surface of the connecting member facing the return water channel, the water distributor is provided with a receiving groove on the side facing the connecting portion, the receiving groove is communicated with the cooling hole, the water distributor is further provided with a first through hole and a plurality of second through holes, the water inlet pipe is arranged in the first through hole, and the water inlet pipe is arranged in the cooling hole, and the second through holes are used for communicating the receiving groove and the return water channel, so that the cooling liquid flows into the return water channel through the receiving groove and the second through holes in sequence.

[0009] In one of the embodiments, the cooling assembly further comprises a spraying member, the spraying member is installed on the water inlet pipe and arranged in the cooling hole, and the spraying member is used for uniformly spraying the cooling liquid on the bottom of the cooling hole.

[0010] In one of the embodiments, the cooling assembly further comprises a fastening ring, the outer pipe is sleeved on the outer side wall of the connecting member, and the fastening ring is sleeved on the outer pipe, and the fastening ring is used for fastening the connection between the outer pipe and the connecting member.

[0011] In one of the embodiments, the first through hole is arranged along the axis of the water distributor, and the second through holes include a plurality of second through holes, and the plurality of second through holes are uniformly distributed along the circumference of the first through hole.

[0012] In one of the embodiments, the outer side wall of the connecting portion is provided with an external thread, the connecting member is provided with a mounting groove, the groove side wall of the mounting groove is provided with an internal thread, and the external thread and the internal thread are engaged and connected.

[0013] In one of the embodiments, the cooling assembly further comprises a water inlet connector and a water outlet connector, the water inlet connector is installed on the first water inlet of the water inlet pipe, and the water outlet connector is installed on the second water outlet of the outer pipe.

[0014] In one of the embodiments, the cooling assembly further comprises a power access copper plate, the power access copper plate is connected to the outer pipe, and the power access copper plate is used for electrically connecting an external power supply.

[0015] In one of the embodiments, the outer pipe comprises a first segment and a second segment, the first segment and the second segment are connected, and the angle between the first segment and the second segment is 98°±10°.

[0016] The application further provides an electric melting furnace, which comprises a melting pool for loading melted raw materials.

[0017] The cooling assembly of the top-inserted electrode water jacket according to any one of the above-mentioned embodiments is arranged on the liquid surface of the melting pool.

[0018] The top-inserted electrode water jacket and the electric melting furnace are connected with the cooling assembly through the connecting part of the electrode rod, the cooling holes are arranged at the end face of the connecting part, one end of the outer pipe of the cooling assembly is sealingly connected with the connecting part through the connecting piece, and the water inlet pipe is arranged in the water return channel of the outer pipe, so that the water outlet of the water inlet pipe is arranged in the cooling hole, the cooling liquid is input into the water inlet channel of the water inlet pipe, and then the cooling liquid enters the cooling hole from the water outlet, so that the electrode rod is cooled, and then the cooling liquid flows into the water return channel from the cooling hole, and finally flows out from the water return channel, to form a circulating water flow channel of the water inlet channel, the cooling hole and the water return channel. The electrode rod end is cooled by directly inputting the cooling water into the cooling hole of the electrode rod, the top end of the electrode rod does not need to be wrapped, therefore the cooling assembly does not need to be immersed in the liquid surface together with the electrode rod, corrosion of the cooling assembly in the harsh environment of the liquid surface is avoided, the head of the electrode rod is directly cooled by the cooling water, the temperature of the head of the electrode rod is ensured to be lower than 100 DEG C, and the electrode rod has the advantages of small loss and good cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure schematic diagram of the electric melting furnace described in the embodiment of the application.

[0020] Figure 2 The structure schematic diagram of the top-inserted electrode water jacket described in the embodiment of the application.

[0021] Figure 3 The partial structure schematic diagram of the cooling assembly of the top-inserted electrode water jacket described in the embodiment of the application.

[0022] Figure 4 The structure schematic diagram of the A place of Figure 2 The structure schematic diagram of the A place of

[0023] LIST OF REFERENCE NUMERALS

[0024] 10, electric melting furnace; 10A, liquid surface; 20, top-inserted electrode water jacket;

[0025] 100, electrode rod; 110, connecting part; 110A, cooling hole;

[0026] 200, cooling assembly; 210, outer pipe; 210A, water return channel; 211, first segment; 212, second segment; 220, water inlet pipe; 220A, water inlet channel; 221, spraying piece; 230, connecting piece; 240, water distributor; 240A, accommodating groove; 240B, first through hole; 240C, second through hole; 250, fastening ring; 260, water inlet joint; 270, water outlet joint; 280, power supply access copper plate; 280A, mounting hole. DETAILED DESCRIPTION

[0027] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and with modifications thereof, without departing from the scope of the present application, and it is understood that these specific embodiments are given for purposes of example and exemplary description only and are not presented in a way of limitation to the present application.

[0028] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0029] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0030] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless specifically defined and limited otherwise, if there is a description of a first feature on or above or below a second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature can be above or above and above the second feature, or it can only mean that the first feature is higher in horizontal height than the second feature. The first feature can be below or below and below the second feature, or it can only mean that the first feature is lower in horizontal height than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intermediate element. If an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein are for illustrative purposes only and do not indicate the only implementation.

[0033] Referring to Figures 1 to 4 , a structural schematic diagram of a top-inserted electrode water jacket 20 in an embodiment of the present application is shown, the top-inserted electrode water jacket 20 comprising an electrode rod 100 and a cooling assembly 200, the electrode rod 100 being provided with a connecting portion 110, the connecting portion 110 being provided with a cooling hole 110A.

[0034] In an embodiment, the connecting portion 110 is arranged at an end of the electrode rod 100, and the cooling hole 110A is arranged at an end face of the connecting portion 110.

[0035] The cooling assembly 200 comprises an outer pipe 210, a water inlet pipe 220, and a connecting piece 230, the outer pipe 210 being provided with a water return passage 210A, the water inlet pipe 220 being arranged in the water return passage 210A, the connecting piece 230 being mounted at one end of the outer pipe 210, the connecting piece 230 being detachably connected with the connecting portion 110, the water inlet pipe 220 being provided with a water inlet passage 220A, one end of the water inlet pipe 220 being arranged in the cooling hole 110A through the connecting piece 230, the other end of the water inlet pipe 220 being used for inputting cooling liquid into the water inlet passage 220A, so that the cooling liquid flows into the cooling hole 110A and the water return passage 210A in sequence through the water inlet passage 220A, and flows out from the other end of the outer pipe 210.

[0036] In an embodiment, as shown in Figures 2 to 4 , the electrode rod 100 is a molybdenum electrode, and the electrode rod 100 is in a cylindrical structure, the connecting piece 230 is in a ring sleeve structure, the connecting portion 110 of the electrode rod 100 is mounted in the ring of the connecting piece 230, and the outer pipe 210 is sleeved on the outer sidewall of the connecting piece 230.

[0037] Further, as shown in Figure 2 the first water inlet and the first water outlet are in communication with the water inlet channel 220A, the first water outlet is arranged in the cooling hole 110A, so that the cooling liquid is input into the cooling hole 110A, the outer tube 210 is provided with a mounting port and a second water outlet, the mounting port and the second water outlet are in communication with the water outlet channel 210A, the electrode rod 100 is connected to the mounting port through the connecting piece 230, the cooling liquid flowing out of the cooling hole 110A flows into the water outlet channel 210A, and then flows out of the second water outlet.

[0038] The top-inserted electrode water jacket 20 described in the embodiment of the present application is connected to the cooling assembly 200 through the connecting portion 110 of the electrode rod 100, the cooling hole 110A is arranged at the end surface of the connecting portion 110, one end of the outer tube 210 of the cooling assembly 200 is sealingly connected to the connecting portion 110 through the connecting piece 230, and the water inlet tube 220 is arranged in the water outlet channel 210A of the outer tube 210, so that the first water outlet of the water inlet tube 220 is arranged in the cooling hole 110A, the cooling liquid is input into the water inlet channel 220A of the water inlet tube 220, and then the cooling liquid enters the cooling hole 110A from the first water outlet, so that the electrode rod 100 is cooled, then the cooling liquid flows into the water outlet channel 210A from the cooling hole 110A, and finally flows out of the second water outlet of the outer tube 210, forming a circulating water flow channel of the water inlet channel 220A, the cooling hole 110A and the water outlet channel 210A.

[0039] The top-inserted electrode water jacket 20 described in the embodiment of the present application cools the electrode rod 100 by directly inputting the cooling water into the cooling hole 110A of the electrode rod 100, the cooling assembly 200 does not need to wrap the top end of the electrode rod 100, so the cooling assembly 200 does not need to be immersed in the liquid surface 10A together with the electrode rod 100, avoiding corrosion of the cooling assembly 200 in the harsh environment of the melting pool liquid surface 10A, and the cooling water directly cools the head of the electrode rod 100, ensuring that the temperature of the head of the electrode rod 100 is lower than 100℃, having the advantages of small loss and good cooling effect.

[0040] In an exemplary embodiment, the material of the connecting piece 230 is red copper.

[0041] In some embodiments, as shown in Figure 3 and Figure 4As shown, the cooling assembly 200 further comprises a water distributor 240, which is mounted on the end surface of the connecting piece 230 facing the return water channel 210A, and is provided with a receiving groove 240A on the side facing the connecting part 110, the receiving groove 240A being in communication with the cooling hole 110A, and the water distributor 240 is further provided with a first through hole 240B and a second through hole 240C, the water inlet pipe 220 is arranged in the first through hole 240B and in the cooling hole 110A, and the second through hole 240C is used to connect the receiving groove 240A and the return water channel 210A, so that the cooling liquid flows into the return water channel 210A through the receiving groove 240A and the second through hole 240C in sequence.

[0042] In this embodiment, the cooling liquid flowing out of the cooling hole 110A needs to be evenly distributed through the water distributor 240. Specifically, the cooling liquid first enters the receiving groove 240A, and then flows into the return water channel 210A from the cooling hole 110A through the second through hole 240C, ensuring the balanced flow of the cooling water and avoiding local overheating of the electrode rod 100, thereby improving the cooling stability of the cooling assembly 200.

[0043] In one exemplary embodiment, as shown in Figure 4 The first through hole 240B is arranged along the axis of the water distributor 240, and the second through hole 240C comprises a plurality of second through holes 240C, which are uniformly distributed along the circumference of the first through hole 240B, so that the cooling liquid uniformly flows out of the second through hole 240C, avoiding local overheating of the electrode rod 100 and improving the cooling stability of the cooling assembly 200.

[0044] In an alternative embodiment, as shown in Figure 4 The cooling assembly 200 further comprises a spraying member 221, which is mounted on the water inlet pipe 220 and arranged in the cooling hole 110A, and is used to uniformly spray the cooling liquid on the bottom of the cooling hole 110A. By arranging the spraying member 221 on the first water outlet of the water inlet pipe 220, the cooling liquid is uniformly sprayed from the water inlet pipe 220 to the bottom of the cooling hole 110A, so that the cooling liquid uniformly contacts the electrode rod 100, avoiding local overheating of the electrode rod 100 and improving the cooling stability of the cooling assembly 200.

[0045] In an alternative embodiment, as shown in Figure 3As shown, the cooling assembly 200 further comprises a fastening ring 250, the outer tube 210 is sleeved on the outer sidewall of the connecting piece 230, and the fastening ring 250 is sleeved on the outer tube 210. The fastening ring 250 is used to fasten the connection between the outer tube 210 and the connecting piece 230. Since the connecting piece 230 is installed in the installation opening of the outer tube 210, by sleeving the fastening ring 250 on the outer sidewall of the outer tube 210, adjusting the fastening ring 250 to seal the connection between the connecting piece 230 and the outer tube 210, the tightness of the connection between the outer tube 210 and the connecting piece 230 is ensured.

[0046] In other embodiments, the outer sidewall of the connecting piece 230 and the outer tube 210 can also be connected by sealing glue, to ensure the sealing of the connection between the connecting piece 230 and the outer tube 210, and to improve the stability of the use of the top-inserted electrode water jacket 20.

[0047] In an optional embodiment, the depth of the cooling hole 110A is 200mm±20mm. By limiting the depth of the cooling hole 110A to 200mm, it is ensured that the cooling liquid can sufficiently cool the electrode rod 100, so as to ensure the cooling effect of the cooling assembly 200, without the need to cool the outer sidewall of the electrode rod 100 by connecting the cooling assembly 200, thereby avoiding corrosion of the cooling assembly 200 immersed in the liquid surface.

[0048] In an optional embodiment, as shown in Figure 4 The outer sidewall of the connecting part 110 is provided with external threads, the connecting piece 230 is provided with an installation slot, the slot sidewall of the installation slot is provided with internal threads, and the external threads and the internal threads are engaged and connected.

[0049] In this embodiment, the connecting part 110 and the connecting piece 230 are connected by a threaded pair, which can ensure the sealing of the connection between the electrode rod 100 and the connecting piece 230, and also facilitates the disassembly of the electrode rod 100.

[0050] In other embodiments, the connecting part 110 is provided with a movable buckle, and the installation slot of the connecting piece 230 is provided with a clamping groove. By detachably connecting the buckle and the clamping groove, the electrode rod 100 and the cooling assembly 200 can be conveniently disassembled and assembled, and the electrode rod 100 can be conveniently replaced. In order to improve the sealing between the electrode rod 100 and the connecting piece 230, a sealing ring is arranged between the connecting part 110 and the connecting piece 230.

[0051] In an optional embodiment, as shown in Figure 1As shown, the cooling assembly 200 further comprises a water inlet joint 260 and a water outlet joint 270, the water inlet joint 260 is installed on the first water inlet of the water inlet pipe 220, and the water outlet joint 270 is installed on the second water outlet of the outer pipe 210. By installing the water inlet joint 260 on the first water inlet, the water inlet joint 260 is connected with the joint for outputting the cooling liquid, and by installing the water outlet joint 270 on the second water outlet, the water outlet joint 270 is connected with the joint for recovering the cooling liquid, which has the advantage of convenient use.

[0052] In an exemplary embodiment, the cooling liquid can be pure water, ethylene glycol aqueous solution, or mineral oil, etc.

[0053] In an alternative embodiment, as shown in Figure 1 As shown, the cooling assembly 200 further comprises a power access copper plate 280, the power access copper plate 280 is connected to the outer pipe 210, and the power access copper plate 280 is used for electrically connecting an external power source. Specifically, the power access copper plate 280 is welded to the outer pipe 210. By accessing the outer pipe 210 through the power access copper plate 280, the electrode rod 100 is connected to the current to heat and melt the raw materials in the electric furnace.

[0054] In an alternative embodiment, the top-inserted electrode water jacket 20 further comprises a clamping member, the clamping member is installed on the electric furnace, and the top-inserted electrode water jacket 20 is installed on the clamping member, so as to fix the top-inserted electrode water jacket 20 and facilitate the installation of the top-inserted electrode water jacket 20.

[0055] In an alternative embodiment, as shown in Figure 1 As shown, the outer pipe 210 comprises a first segment 211 and a second segment 212, the first segment 211 and the second segment 212 are connected, and the angle between the first segment 211 and the second segment 212 is 98°±10°. Since the top-inserted electrode water jacket 20 is top-inserted, the electrode rod 100 needs to be approximately vertically inserted into the melting pool. By setting the outer pipe 210 as the first segment 211 and the second segment 212, if the first segment 211 is installed horizontally, the electrode rod 100 is installed on the second segment 212, and the second segment 212 can be vertically arranged with the electrode rod 100, so as to conveniently set the electrode rod 100 to be inserted into the melting pool, which has the advantage of convenient use.

[0056] On the other hand, the present application also provides an electric furnace 10, as shown in Figure 1 As shown, comprising a melting pool for loading melted raw materials, and the top-inserted electrode water jacket 20 of any one of the above embodiments, the cooling assembly 200 of the top-inserted electrode water jacket 20 is arranged on the liquid surface 10A of the melting pool.

[0057] The electric smelting furnace 10 described in the embodiments of the present application cools the electrode rod 100 by directly inputting cooling water into the cooling hole 110A of the electrode rod 100, and the cooling assembly 200 does not need to wrap the top end of the electrode rod 100, so the cooling assembly 200 does not need to be immersed in the liquid surface 10A together with the electrode rod 100, avoiding corrosion of the cooling assembly 200 in the harsh environment of the smelting pool liquid surface 10A, and the cooling water directly cools the head of the electrode rod 100, ensuring that the temperature of the head of the electrode rod 100 is lower than 100℃, having the advantages of small loss and good cooling effect.

[0058] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0059] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A top mounted electrode water jacket (20) characterized by, The electrode rod (100) is provided with a connecting part (110) provided with a cooling hole (110A), and the cooling assembly (200) includes an outer pipe (210), a water inlet pipe (220) and a connecting piece (230).

2. The top-inserted electrode water jacket (20) according to claim 1, characterized in that: The cooling assembly (200) further includes a water distributor (240) installed on the end face of the connecting piece (230) facing the backwater channel (210A), one side of the water distributor (240) facing the connecting part (110) is provided with a containing groove (240A) in communication with the cooling hole (110A), and the water distributor (240) is further provided with a first through hole (240B) and a second through hole (240C), the water inlet pipe (220) is arranged in the first through hole (240B) and the cooling hole (110A), and the second through hole (240C) is used to communicate the containing groove (240A) and the backwater channel (210A) so that the cooling liquid flows into the backwater channel (210A) through the containing groove (240A) and the second through hole (240C) in sequence.

3. The top-inserted electrode water jacket (20) according to claim 1, characterized in that: The cooling assembly (200) further includes a spraying piece (221) installed on the water inlet pipe (220) and arranged in the cooling hole (110A), and the spraying piece (221) is used to uniformly spray the cooling liquid on the bottom of the cooling hole (110A).

4. The top-inserted electrode water jacket (20) according to claim 1, characterized in that: ​ ​ The cooling assembly (200) further comprises a fastening ring (250), the outer tube (210) is sleeved on the outer sidewall of the connecting piece (230), and the fastening ring (250) is sleeved on the outer tube (210), and the fastening ring (250) is used for fastening the connection between the outer tube (210) and the connecting piece (230).

5. The top-inserted electrode water jacket (20) according to claim 2, characterized in that: The first through hole (240B) is arranged along the axis of the water distributor (240), and the second through hole (240C) comprises a plurality of second through holes (240C) which are uniformly distributed along the circumference of the first through hole (240B).

6. The top-inserted electrode water jacket (20) according to claim 1, characterized in that: The outer sidewall of the connecting part (110) is provided with external threads, the connecting piece (230) is provided with a mounting groove, the groove sidewall of the mounting groove is provided with internal threads, and the external threads and the internal threads are engaged and connected.

7. The top-inserted electrode water jacket (20) according to claim 1, characterized in that: The cooling assembly (200) further comprises a water inlet connector (260) and a water outlet connector (270), the water inlet connector (260) is mounted on the first water inlet of the water inlet pipe (220), and the water outlet connector (270) is mounted on the second water outlet of the outer tube (210).

8. The top-inserted electrode water jacket (20) according to claim 1, characterized in that: The cooling assembly (200) further comprises a power access copper plate (280), the power access copper plate (280) is connected to the outer tube (210), and the power access copper plate (280) is used for electrically connecting an external power supply.

9. The top-inserted electrode water jacket (20) according to claim 1, characterized in that: The outer tube (210) comprises a first segment (211) and a second segment (212), the first segment (211) and the second segment (212) are connected, and the angle between the first segment (211) and the second segment (212) is 98°±10°.

10. An electric smelting furnace (10) characterized by including: a melting pool for loading melted raw materials; and The top-inserted electrode water jacket (20) according to any one of claims 1-9, wherein the cooling assembly (200) of the top-inserted electrode water jacket (20) is arranged on the liquid surface (10A) of the melting pool.

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