Water-cooled electrode of high-temperature vacuum furnace

Abstract

The invention relates to the technical field of water-cooled electrodes, and discloses a water-cooled electrode of a high-temperature vacuum furnace, the water-cooled electrode comprises an electrode bar and a sealing cover, the sealing cover is arranged at the left end of the electrode bar, an electrode holder is fixedly mounted on the outer wall of the electrode bar, and a cooling cavity is formed in the electrode bar; and a cooling water pipe is inserted into the cooling cavity. Through multiple sealing between the sealing cover and the electrode bar, the leakage problem caused by reduction of the sealing performance between the sealing cover and the electrode bar after the water-cooled electrode is used for a long time or the sealing cover is disassembled for multiple times is avoided, the sealing performance of the water-cooled electrode is improved, the service life of the water-cooled electrode is prolonged, water is guided through the spiral guide piece, and the water-cooled electrode is more stable in use. And meanwhile, heat on the electrode bar can be transferred to the spiral guide plate by adopting the copper sleeve, and the heat can be quickly taken away after water flow passes through the spiral guide plate, so that the water cooling effect of the water-cooled electrode is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water-cooled electrodes, in particular to a water-cooled electrode for a high-temperature vacuum furnace. Background Art

[0002] The water-cooled electrode of the high-temperature vacuum furnace is fixed on the furnace body of the high-temperature vacuum furnace through the electrode holder, so the electrode rod and the electrode holder need to be insulated to ensure the safe operation of the high-temperature vacuum furnace. The water-cooled electrode is the port of the vacuum furnace connecting the heating element components in the furnace, and is the key component connecting the power supply outside the furnace with the heating element in the furnace. As the workpiece's requirements for the working temperature of the vacuum furnace increase, the use temperature of the water-cooled electrode of the vacuum furnace also increases accordingly. The performance of the water-cooled electrode is directly related to whether the vacuum furnace can meet the index requirements.

[0003] According to a Chinese patent with the publication number "CN102519266B", a water-cooled electrode for a high-temperature vacuum furnace is disclosed, including an electrode seat with a through hole in the middle, an electrode rod is inserted in the electrode seat, an annular mounting boss is arranged on the electrode rod, an insulating flange is arranged between the electrode seat and the annular mounting boss of the electrode rod, a copper flange is arranged on the other side of the annular mounting boss, a cooling cavity is arranged in the electrode rod, a cooling water pipe is arranged in the cooling cavity, and an inlet pipe connected to the cooling water pipe and an outlet pipe connected to the cooling cavity are also arranged at one end of the electrode rod near the copper flange. The present invention is suitable for high-temperature and high-vacuum environments, and the sealing and insulation are reliable and effective, and the service life is long. The connection between the sealing cover of the water-cooled electrode and the electrode rod is threaded. After long-term use, relying solely on the threaded connection will lead to problems of reduced sealing and water leakage in the later stage, and there is a problem of uneven cooling by injecting water into the cooling cavity. Therefore, a water-cooled electrode for a high-temperature vacuum furnace is proposed to solve the above-mentioned problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a water-cooled electrode for a high-temperature vacuum furnace in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a water-cooled electrode for a high-temperature vacuum furnace, comprising an electrode rod and a sealing cover, wherein the sealing cover is arranged at the left end of the electrode rod, an electrode holder is fixedly mounted on the outer wall of the electrode rod, a cooling cavity is opened inside the electrode rod, and a cooling water pipe is inserted inside the cooling cavity; A sealing mechanism is provided between the electrode rod and the sealing cover, and a flow guiding mechanism is provided inside the electrode rod; The sealing mechanism comprises a limiting ring and a second ring groove, the side wall of the limiting ring is provided with a first ring groove, a first sealing ring is bonded inside the first ring groove, a first plug-in ring is plugged inside the first ring groove, the first plug-in ring is fixedly connected to the sealing cover, the second ring groove is provided on the electrode rod, a second sealing ring is bonded inside the second ring groove, a third plug-in ring is plugged inside the second ring groove, and the third plug-in ring is fixedly connected to the sealing cover; The guide mechanism comprises a mounting groove and a copper sleeve. The mounting groove is arranged on the cavity wall of the cooling cavity. The copper sleeve is fixedly mounted inside the mounting groove. The inner wall of the copper sleeve is fixedly connected with a spiral guide vane.

[0006] Preferably, a second plug-in ring is fixedly connected to the sealing cover, an internal thread is provided on the inner wall of the left end of the electrode rod, and an external thread is provided on the outer wall of the inner tube of the right end of the sealing cover. The sealing cover is threadedly connected to the left end of the electrode rod. The provision of the second plug-in ring can improve the sealing between the sealing cover and the electrode rod. At the same time, the sealing cover and the electrode rod are threadedly connected to facilitate disassembly and assembly of the two. After the sealing cover is removed, the interior of the cooling cavity can be easily cleaned.

[0007] Preferably, the limiting ring is fixedly mounted on the outer wall of the left end of the electrode rod, the sealing cover is fixedly connected with a water outlet pipe, and a water inlet pipe head is arranged at the left end of the sealing cover. The limiting ring can limit the sealing cover, and the water outlet pipe can be conveniently discharged from the cooling cavity.

[0008] Preferably, a first connecting flange is fixedly mounted on the electrode holder, a second connecting flange is fixedly mounted on the outer wall of the electrode rod, and the cooling water pipe runs through the interior of the copper sleeve. The arrangement of the first connecting flange and the second connecting flange can facilitate the installation of the electrode holder on the electrode rod.

[0009] Preferably, the right wall of the first plug-in ring abuts against the first sealing ring, and the right wall of the third plug-in ring abuts against the second sealing ring. Through the arrangement of the first plug-in ring, the first sealing ring, the third plug-in ring and the second sealing ring, multiple sealings between the sealing cover and the electrode rod can be achieved, thereby avoiding the problem of reduced sealing and leakage of the water-cooled electrode after long-term use.

[0010] Preferably, a docking mechanism is provided on the water inlet pipe head, and the docking mechanism includes a sealing groove and an auxiliary ring. The sealing groove is opened inside the sealing cover, a third sealing ring is bonded inside the sealing groove, and the auxiliary ring is fixedly mounted on the water inlet pipe head. The setting of the docking mechanism can improve the sealing performance of the docking between the water inlet pipe head and the sealing cover.

[0011] Preferably, a sealing ring is inserted into the interior of the sealing groove, the right wall of the sealing ring abuts against the third sealing ring, the sealing ring is fixedly connected to the water inlet pipe head, the left end of the sealing cover is provided with an internal thread, the right end outer wall of the water inlet pipe head is provided with an external thread, the right end of the water inlet pipe head is threadedly connected to the left end of the sealing cover, and the water inlet pipe head can be disassembled to pull the cooling water pipe out of the cooling cavity, so that the scale on the cooling water pipe can be cleaned conveniently.

[0012] Preferably, an auxiliary rotating block is fixedly mounted on the auxiliary ring, and the number of the auxiliary rotating blocks is two. The two auxiliary rotating blocks are fixedly connected to the auxiliary ring in symmetrical positions, and the left end of the cooling water pipe is fixedly mounted on the water inlet pipe head. The setting of the auxiliary ring and the auxiliary rotating block can assist the user in rotating the water inlet pipe head, making it convenient for the user to remove the water inlet pipe head from the sealing cover.

[0013] A high-temperature vacuum furnace comprises a furnace body, a base is arranged below the furnace body, the electrode seat is arranged on the furnace body, and an adjustment mechanism is arranged on the base; The adjusting mechanism comprises a hydraulic cylinder, a support frame and a fixing seat, the hydraulic cylinder is fixedly mounted on the fixing seat, the support frame is fixedly mounted on the upper end of the hydraulic cylinder, the furnace body is fixedly mounted on the support frame, and the bottom of the hydraulic cylinder is fixedly mounted on the base.

[0014] Preferably, a guide plate is fixedly installed on the bottom of the support frame, a positioning hole is opened on the guide plate, a cylinder is fixedly installed inside the fixing seat, a positioning block is fixedly installed on the telescopic end of the cylinder, and the positioning block is inserted into the inside of the positioning hole. By starting the cylinder to insert the positioning block into the inside of the positioning hole on the guide plate, the support and fixation of the support frame can be achieved.

[0015] Preferably, a positioning column is fixedly installed on the base, a docking groove is opened at the bottom of the fixing seat, the positioning column is inserted into the inside of the docking groove, and the lower end of the guide plate is inserted into the inside of the fixing seat. The setting of the docking groove and the positioning column can facilitate the docking and positioning between the base and the fixing seat.

[0016] The present invention adopts the above technical solution to bring the following beneficial effects: 1. The water-cooled electrode of the high-temperature vacuum furnace is provided with a limit ring, a first ring groove, a first sealing ring, a first plug-in ring, a second plug-in ring, a second ring groove, a third plug-in ring and a second sealing ring, so that multiple seals are performed between the sealing cover and the electrode rod, thereby avoiding leakage caused by reduced sealing between the sealing cover and the electrode rod after the water-cooled electrode is used for a long time or the sealing cover is disassembled many times, thereby improving the sealing property and service life of the water-cooled electrode.

[0017] 2. The water-cooled electrode of the high-temperature vacuum furnace is equipped with a mounting groove, a copper sleeve and a spiral guide vane, so that the cooling water enters the interior of the cooling cavity through the cooling water pipe. When passing through the interior of the copper sleeve, the water is guided by the spiral guide vane to avoid the problem of uneven water cooling. At the same time, the copper sleeve can transfer the heat on the electrode rod to the spiral guide vane. When the water flows through the spiral guide vane, the heat can be quickly taken away, thereby improving the water cooling effect of the water-cooled electrode.

[0018] 3. The water-cooled electrode of the high-temperature vacuum furnace can be easily disassembled through the matching arrangement of the sealing groove, the third sealing ring, the sealing ring, the auxiliary ring and the auxiliary rotating block, so that the water inlet pipe head can be easily disassembled, and the cooling water pipe can be taken out from the inside of the cooling cavity to deal with the scale on the cooling water pipe, which is convenient for maintenance of the cooling water pipe. At the same time, the sealing between the water inlet pipe head and the sealing cover relies on the threaded connection between the two. The matching of the sealing groove, the third sealing ring and the sealing ring can avoid the problem of poor sealing after multiple disassemblies, thereby further improving the practicality of the water-cooled electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the sealing cover of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the water inlet pipe head of the present invention; Figure 5 This is a schematic diagram of the sealing cover structure of the present invention; Figure 6 This is a schematic diagram of the copper sleeve structure of the present invention; Figure 7 This is a schematic diagram of the water inlet pipe head structure of the present invention; Figure 8 It is a schematic diagram of the overall structure of the vacuum furnace of the present invention; Fig. 9 This is a schematic diagram of the base structure of the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the fixing seat of the present invention.

[0020] In the figure: 1, electrode rod; 2, sealing mechanism; 201, limiting ring; 202, first ring groove; 203, first sealing ring; 204, first plug-in ring; 205, second plug-in ring; 206, second ring groove; 207, third plug-in ring; 208, second sealing ring; 3, flow guide mechanism; 301, mounting groove; 302, copper sleeve; 303, spiral guide; 4, docking mechanism; 401, sealing groove; 402, third sealing ring; 403, sealing ring; 404, auxiliary ring; 405. Auxiliary rotating block; 5. Sealing cover; 6. Electrode holder; 7. Water inlet pipe head; 8. Water outlet pipe; 9. Cooling cavity; 10. Cooling water pipe; 11. First connecting flange; 12. Second connecting flange; 13. Furnace body; 14. Base; 15. Adjusting mechanism; 1501. Hydraulic cylinder; 1502. Support frame; 1503. Guide plate; 1504. Fixed seat; 1505. Cylinder; 1506. Positioning hole; 1507. Positioning block; 16. Docking groove; 17. Positioning column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0025] See also Figure 1-3 , 5, 6, an embodiment of the present invention is: a water-cooled electrode for a high-temperature vacuum furnace, comprising an electrode rod 1 and a sealing cover 5, the sealing cover 5 is arranged at the left end of the electrode rod 1, an electrode holder 6 is fixedly mounted on the outer wall of the electrode rod 1, a cooling cavity 9 is opened inside the electrode rod 1, and a cooling water pipe 10 is inserted into the cooling cavity 9; A sealing mechanism 2 is provided between the electrode rod 1 and the sealing cover 5, and a flow guiding mechanism 3 is provided inside the electrode rod 1; The sealing mechanism 2 comprises a limiting ring 201 and a second annular groove 206. A first annular groove 202 is provided on the side wall of the limiting ring 201. A first sealing ring 203 is bonded inside the first annular groove 202. A first plug-in ring 204 is plugged inside the first annular groove 202. The first plug-in ring 204 is fixedly connected to the sealing cover 5. A second annular groove 206 is provided on the electrode rod 1. A second sealing ring 208 is bonded inside the second annular groove 206. A third plug-in ring 207 is plugged inside the second annular groove 206. The third plug-in ring 207 is fixedly connected to the sealing cover 5. Multiple sealing is performed between the sealing cover 5 and the electrode rod 1, thereby avoiding leakage caused by reduced sealing between the sealing cover 5 and the electrode rod 1 after long-term use of the water-cooled electrode or after the sealing cover 5 is disassembled multiple times, thereby improving the sealing performance and service life of the water-cooled electrode. The guide mechanism 3 includes a mounting groove 301 and a copper sleeve 302. The mounting groove 301 is opened on the cavity wall of the cooling cavity 9. The copper sleeve 302 is fixedly installed inside the mounting groove 301. The inner wall of the copper sleeve 302 is fixedly connected with a spiral guide piece 303. The cooling water enters the cooling cavity 9 through the cooling water pipe 10. When passing through the copper sleeve 302, the spiral guide piece 303 guides the water to avoid the problem of uneven water cooling. At the same time, the copper sleeve 302 can transfer the heat on the electrode rod 1 to the spiral guide piece 303. When the water flows through the spiral guide piece 303, the heat can be seen to be quickly taken away, thereby improving the water cooling effect of the water-cooled electrode.

[0026] A second plug-in ring 205 is fixedly connected to the sealing cover 5, an internal thread is provided on the inner wall of the left end of the electrode rod 1, and an external thread is provided on the outer wall of the inner tube of the right end of the sealing cover 5. The sealing cover 5 is threadedly connected to the left end of the electrode rod 1. The provision of the second plug-in ring 205 can improve the sealing between the sealing cover 5 and the electrode rod 1. At the same time, the sealing cover 5 and the electrode rod 1 are threadedly connected to facilitate the disassembly and assembly of the two. After the sealing cover 5 is disassembled, the interior of the cooling cavity 9 can be easily cleaned.

[0027] The limiting ring 201 is fixedly mounted on the outer wall of the left end of the electrode rod 1, a water outlet pipe 8 is fixedly connected to the sealing cover 5, and a water inlet pipe head 7 is arranged at the left end of the sealing cover 5. The setting of the limiting ring 201 can limit the sealing cover 5, and the setting of the water outlet pipe 8 can facilitate the discharge of water inside the cooling cavity 9.

[0028] A first connecting flange 11 is fixedly mounted on the electrode holder 6, a second connecting flange 12 is fixedly mounted on the outer wall of the electrode rod 1, and a cooling water pipe 10 runs through the interior of the copper sleeve 302. The arrangement of the first connecting flange 11 and the second connecting flange 12 facilitates the installation of the electrode holder 6 on the electrode rod 1.

[0029] The right wall of the first plug-in ring 204 abuts against the first sealing ring 203, and the right wall of the third plug-in ring 207 abuts against the second sealing ring 208. The arrangement of the first plug-in ring 204, the first sealing ring 203, the third plug-in ring 207 and the second sealing ring 208 can realize multiple sealing between the sealing cover 5 and the electrode rod 1, thereby avoiding the problem of reduced sealing and leakage of the water-cooled electrode after long-term use.

[0030] Working principle: when the sealing cover 5 is threadedly connected to the electrode rod 1, as the sealing cover 5 rotates, the first plug-in ring 204, the second plug-in ring 205 and the third plug-in ring 207 are plugged into the corresponding ring grooves on the electrode rod 1, and cooperate with the sealing ring to achieve multiple sealing, thereby avoiding the leakage problem caused by the reduced sealing between the sealing cover 5 and the electrode rod 1 after the water-cooled electrode is used for a long time or the sealing cover 5 is disassembled many times, thereby improving the sealing and service life of the water-cooled electrode. The cooling water enters the cooling cavity 9 through the cooling water pipe 10, and then when passing through the copper sleeve 302, the water is guided by the spiral guide vane 303 to avoid the problem of uneven water cooling. At the same time, the copper sleeve 302 can transfer the heat on the electrode rod 1 to the spiral guide vane 303. When the water flows through the spiral guide vane 303, it can be seen that the heat is quickly taken away, thereby improving the water cooling effect of the water-cooled electrode.

[0031] See also Figure 4 , 7 On the basis of the above embodiment, in another embodiment of the present invention, a docking mechanism 4 is provided on the water inlet pipe head 7, and the docking mechanism 4 includes a sealing groove 401 and an auxiliary ring 404. The sealing groove 401 is opened inside the sealing cover 5, and a third sealing ring 402 is bonded inside the sealing groove 401. The auxiliary ring 404 is fixedly installed on the water inlet pipe head 7. The setting of the docking mechanism 4 can improve the sealing performance of the docking between the water inlet pipe head 7 and the sealing cover 5.

[0032] A sealing ring 403 is inserted into the sealing groove 401. The sealing ring 403 is made of PEEK, which has excellent heat resistance and corrosion resistance. When the water-cooled electrode is working under heating, the sealing ring 403 will not melt, thereby ensuring the sealing of the water-cooled electrode under high temperature. At the same time, the corrosion resistance enables the sealing ring 403 to resist the corrosion of cooling water under long-term working conditions, thereby improving the service life of the sealing ring 403. The right wall of the sealing ring 403 abuts against the third sealing ring 402, and the sealing ring 403 is fixedly connected to the water inlet pipe head 7. An internal thread is provided inside the left end of the sealing cover 5, and an external thread is provided on the outer wall of the right end of the water inlet pipe head 7. The right end of the water inlet pipe head 7 is threadedly connected to the left end of the sealing cover 5. Through the detachability of the water inlet pipe head 7, the cooling water pipe 10 can be drawn out of the cooling cavity 9 by disassembling the water inlet pipe head 7, so that the scale on the cooling water pipe 10 can be cleaned conveniently.

[0033] An auxiliary rotating block 405 is fixedly installed on the auxiliary ring 404. There are two auxiliary rotating blocks 405, and the two auxiliary rotating blocks 405 are fixedly connected to the auxiliary ring 404 in symmetrical positions. The left end of the cooling water pipe 10 is fixedly installed on the water inlet pipe head 7. The setting of the auxiliary ring 404 and the auxiliary rotating block 405 can assist the user in rotating the water inlet pipe head 7, so that the user can remove the water inlet pipe head 7 from the sealing cover 5 conveniently.

[0034] Working principle: through the setting of the auxiliary ring 404 and the auxiliary rotating block 405, when the water inlet pipe head 7 needs to be disassembled, the auxiliary rotating block 405 is pushed to drive the auxiliary ring 404 to rotate, so that the water inlet pipe head 7 can be rotated, so that the water inlet pipe head 7 can be easily disassembled, and the cooling water pipe 10 is taken out from the inside of the cooling cavity 9, and the scale on the cooling water pipe 10 is processed, which is convenient for the maintenance of the cooling water pipe 10. At the same time, the sealing between the water inlet pipe head 7 and the sealing cover 5 depends on the threaded connection between the two, and the sealing groove 401, the third sealing ring 402 and the sealing ring 403 can avoid the problem of poor sealing after multiple disassembly.

[0035] See also Figure 8-10 On the basis of the above embodiments, the present invention further proposes a high temperature vacuum furnace, comprising a furnace body 13, a base 14 is arranged below the furnace body 13, an electrode holder 6 is arranged on the furnace body 13, and an adjustment mechanism 15 is arranged on the base 14; The adjusting mechanism 15 includes a hydraulic cylinder 1501, a support frame 1502 and a fixed seat 1504. The hydraulic cylinder 1501 is fixedly installed on the fixed seat 1504, the support frame 1502 is fixedly installed on the upper end of the hydraulic cylinder 1501, the furnace body 13 is fixedly installed on the support frame 1502, and the bottom of the hydraulic cylinder 1501 is fixedly installed on the base 14.

[0036] A guide plate 1503 is fixedly installed at the bottom of the support frame 1502, and a positioning hole 1507 is opened on the guide plate 1503. A cylinder 1505 is fixedly installed inside the fixed seat 1504, and a positioning block 1506 is fixedly installed at the telescopic end of the cylinder 1505. The positioning block 1506 is inserted into the inside of the positioning hole 1507. By starting the cylinder 1505 so that the positioning block 1506 is inserted into the inside of the positioning hole 1507 on the guide plate 1503, the support and fixation of the support frame 1502 can be achieved.

[0037] A positioning column 17 is fixedly installed on the base 14, and a docking groove 16 is opened at the bottom of the fixed seat 1504. The positioning column 17 is inserted into the inside of the docking groove 16, and the lower end of the guide plate 1503 is inserted into the inside of the fixed seat 1504. The setting of the docking groove 16 and the positioning column 17 can facilitate the docking and positioning between the base 14 and the fixed seat 1504.

[0038] Working principle: When the height of the vacuum furnace needs to be adjusted to facilitate pipe docking, the support frame 1502 is pushed by starting the hydraulic cylinder 1501 to lift the furnace body 13, and the guide plate 1503 thereof will move upward. When it moves to a certain position, the cylinder 1505 is started to insert the positioning block 1506 into the positioning hole 1507 on the guide plate 1503, so as to support and fix the support frame 1502. At this time, the height adjustment of the vacuum furnace is completed, which is convenient for docking pipes of different heights. At the same time, it is also convenient to quickly adjust the installation height of the vacuum furnace according to the working environment of the vacuum furnace, thereby improving the practicality of the vacuum furnace.

[0039] The present invention provides a water-cooled electrode for a high-temperature vacuum furnace. There are many methods and approaches to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. A water-cooled electrode for a high-temperature vacuum furnace, comprising an electrode rod (1) and a sealing cover (5), characterized in that: The sealing cover (5) is arranged at the left end of the electrode rod (1); an electrode holder (6) is fixedly mounted on the outer wall of the electrode rod (1); a cooling cavity (9) is provided inside the electrode rod (1); a cooling water pipe (10) is inserted into the cooling cavity (9); A sealing mechanism (2) is provided between the electrode rod (1) and the sealing cover (5), and a flow guiding mechanism (3) is provided inside the electrode rod (1); The sealing mechanism (2) comprises a limiting ring (201) and a second annular groove (206); a first annular groove (202) is provided on a side wall of the limiting ring (201); a first sealing ring (203) is bonded inside the first annular groove (202); a first plug-in ring (204) is plugged inside the first annular groove (202); the first plug-in ring (204) is fixedly connected to the sealing cover (5); the second annular groove (206) is provided on the electrode rod (1); a second sealing ring (208) is bonded inside the second annular groove (206); a third plug-in ring (207) is plugged inside the second annular groove (206); the third plug-in ring (207) is fixedly connected to the sealing cover (5); The flow guide mechanism (3) comprises a mounting groove (301) and a copper sleeve (302); the mounting groove (301) is provided on the cavity wall of the cooling cavity (9); the copper sleeve (302) is fixedly mounted inside the mounting groove (301); and a spiral guide vane (303) is fixedly connected to the inner wall of the copper sleeve (302).

2. The water-cooled electrode for a high-temperature vacuum furnace according to claim 1, characterized in that: A second plug-in ring (205) is fixedly connected to the first sealing cover (5), an internal thread is provided on the inner wall of the left end of the electrode rod (1), an external thread is provided on the outer wall of the inner cylinder at the right end of the sealing cover (5), and the sealing cover (5) is threadedly connected to the left end of the electrode rod (1).

3. The water-cooled electrode for a high-temperature vacuum furnace according to claim 1, characterized in that: The limiting ring (201) is fixedly mounted on the outer wall of the left end of the electrode rod (1); a water outlet pipe (8) is fixedly connected to the sealing cover (5); and a water inlet pipe head (7) is provided at the left end of the sealing cover (5).

4. The water-cooled electrode for a high-temperature vacuum furnace according to claim 1, characterized in that: A first connecting flange (11) is fixedly mounted on the electrode holder (6), a second connecting flange (12) is fixedly mounted on the outer wall of the electrode rod (1), and the cooling water pipe (10) passes through the interior of the copper sleeve (302).

5. The water-cooled electrode for a high-temperature vacuum furnace according to claim 1, characterized in that: The right wall of the first plug-in ring (204) abuts against the first sealing ring (203), and the right wall of the third plug-in ring (207) abuts against the second sealing ring (208).

6. The water-cooled electrode for a high-temperature vacuum furnace according to claim 3, characterized in that: The water inlet pipe head (7) is provided with a docking mechanism (4), the docking mechanism (4) comprising a sealing groove (401) and an auxiliary ring (404), the sealing groove (401) being opened inside the sealing cover (5), a third sealing ring (402) being bonded inside the sealing groove (401), and the auxiliary ring (404) being fixedly mounted on the water inlet pipe head (7).

7. The water-cooled electrode for a high-temperature vacuum furnace according to claim 6, characterized in that: A sealing ring (403) is inserted into the interior of the sealing groove (401); the right wall of the sealing ring (403) abuts against the third sealing ring (402); the sealing ring (403) is fixedly connected to the water inlet pipe head (7); an internal thread is provided on the interior of the left end of the sealing cover (5); an external thread is provided on the outer wall of the right end of the water inlet pipe head (7); and the right end of the water inlet pipe head (7) is threadedly connected to the interior of the left end of the sealing cover (5).

8. The water-cooled electrode for a high-temperature vacuum furnace according to claim 7, characterized in that: An auxiliary rotating block (405) is fixedly mounted on the auxiliary ring (404). The number of the auxiliary rotating blocks (405) is two, and the two auxiliary rotating blocks (405) are fixedly connected to the auxiliary ring (404) in symmetrical positions. The left end of the cooling water pipe (10) is fixedly mounted on the water inlet pipe head (7).

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