Furnace end electrode cooling device of graphitization furnace

Abstract

The invention discloses a graphitization furnace end electrode cooling device, and relates to the field of graphitization furnaces. An end cooling cavity is formed in the front end face of the conductive electrode, a side cooling cavity is formed in the side end face of the conductive electrode, the end cooling cavity is communicated with the side cooling cavity, and an end gland and a cooler gland are detachably mounted at a cavity opening of the end cooling cavity and a cavity opening of the side cooling cavity respectively. A pair of through holes are vertically formed in the center of the cooler gland, a water outlet pipe is installed in the through hole located on the upper portion, and a water inlet pipe is installed in the through hole located on the lower portion. The upper and lower electrodes are connected through a cavity processed in the middle, so that water seepage is easy to occur at the bottom; and the cooling device is inconvenient to disassemble, assemble and overhaul.

Description

Technical Field

[0001] The present invention relates to the field of graphitization furnaces, and particularly to a cooling device for the furnace head electrode of a graphitization furnace. Background Art

[0002] When the graphitization furnace is operating, the power supply is connected through the conductive electrodes at the furnace head and the furnace tail to form a closed loop to heat the materials in the furnace. During the heating process of the materials, heat is transferred to the electrodes, and the electrodes also generate heat due to their own resistance. During the heating cycle, the furnace head electrodes will gradually rise to a relatively high temperature, causing oxidation of the conductive electrodes themselves. To reduce the temperature of the conductive electrodes outside the furnace body and avoid oxidation of the electrodes by air during long-term conductive states, which affects the service life of the conductive electrodes, a water-cooling method of directly cooling inside the conductive electrodes is mostly used.

[0003] The existing cooling devices for the furnace head electrodes of graphitization furnaces have the following problems: 1. Some cooling devices for the furnace head of graphitization furnaces are set to introduce water from the lower end of the electrode and discharge water from the upper end. The upper and lower electrodes are connected through holes processed in the middle, so water leakage is likely to occur at the bottom. 2. The existing cooling devices for conductive electrodes cannot connect a single conductive electrode to the cooling system for independent operation, and also cannot connect the inlet and outlet water pipes of the cooling devices for two electrodes on the same side to form an integral body. The connection method is not flexible enough. 3. The existing cooling devices for the furnace head of graphitization furnaces need to process the conductive electrodes more under the premise of ensuring the cooling effect, which will affect the overall quality of the electrodes. 4. Some cooling devices for the furnace head of graphitization furnaces also cool through multiple separate water pipes from both ends of the electrode, and the cooling effect is poor. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a cooling device for the furnace head electrode of a graphitization furnace, which solves the technical problems raised in the above background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A cooling device for the furnace head electrode of a graphitization furnace includes a conductive electrode; an end cooling cavity is provided on the front end face of the conductive electrode, a side cooling cavity is provided on the side end face of the conductive electrode, the end cooling cavity is communicated with the side cooling cavity, an end gland and a cooler gland are respectively detachably installed at the orifice of the end cooling cavity and the orifice of the side cooling cavity, a pair of through holes are vertically provided at the center of the cooler gland, a water outlet pipe is installed in the through hole located above, and a water inlet pipe is installed in the through hole located below.

[0006] Preferably, the end pressure cover is disassembled and installed at the end cooling cavity opening by cooperating with the end hinge bolt and nut, and the cooler pressure cover is disassembled and installed at the side cooling cavity opening by cooperating with the cooler hinge bolt and nut.

[0007] Preferably, a first fixing member for fixing the end hinge bolt and a second fixing member for fixing the cooler hinge bolt are provided in the end cooling cavity.

[0008] Preferably, the first fixing member is a first stainless steel rod, a circular groove is provided in the end cooling cavity, one end of the first stainless steel rod is inserted into the circular groove, the other end of the first stainless steel rod is placed in the side cooling cavity, and the first stainless steel rod is detachably connected to the end movable bolt.

[0009] Preferably, the second fixing member is a second stainless steel rod, a through hole is formed in the second stainless steel rod, the second stainless steel rod is removably mounted on the first stainless steel rod through the through hole, and the second stainless steel rod is removably connected to the cooler hinge bolt.

[0010] Preferably, a gasket and a gland sealing ring are provided between the nut and the cooler gland and between the nut and the end gland.

[0011] Preferably, one end of the water outlet pipe extends to the center of the end cooling cavity.

[0012] Preferably, a high-temperature sealant is pressed into the gap between the conductive electrodes.

[0013] Beneficial Effects The present invention provides a graphitization furnace head electrode cooling device, which has the following beneficial effects: 1. By opening an end cooling cavity and a side cooling cavity, the cavity depth is determined according to the length of the conductive electrode outside the furnace body when it is in a working state and the electrode specifications. The end cooling cavity is connected with the side cooling cavity to form a complete electrode cooling cavity. The end cooling cavity and the side cooling cavity can be blocked by disassembling and installing the end gland and the cooler gland. By opening a through hole at the center of the cooler gland, the water inlet pipe and the water outlet pipe can be inserted from the through hole. By installing the water inlet pipe, cooling water can enter the conductive electrode cooling cavity through the water inlet pipe, so as to cool the conductive electrode. By installing the water outlet pipe, the cooled water can flow out through the water outlet pipe. During the cooling process, the cooling water can directly contact the inner wall of the conductive electrode cooling cavity, and can take away the heat of the conductive electrode. In addition, by opening this cooling cavity, it is effectively prevented that the bottom is easy to seep water; 2. The joint bolts on the end face of the conductive electrode are completely embedded below the end face of the electrode. The end face structure ensures the sealing of the cooling cavity without affecting the operation of the furnace head pushing device; 3. The single-electrode cooling device can be connected to the cooling system for independent operation, or the inlet and outlet water pipes of two electrode cooling devices on the same side can be connected to form a whole, with flexible connection methods. 4. Holes for inlet and outlet water cooling pipes are reserved at corresponding positions of the cooler gland. Before installing the cooler gland, first weld the inlet pipe and the outlet pipe. The overall structure of the cooler is convenient to disassemble, install and overhaul. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram when four conductive electrodes in the present invention are combined into one body; Figure 2 is Figure 1 a cross-sectional view taken along line A-A in Figure 3 is Figure 2 a cross-sectional view taken along line B-B in Figure 4 is Figure 2 an enlarged schematic view at position C in

[0015] In the figure: 1. Cooler flexible joint bolt; 2. Cooler gland; 3. End flexible joint bolt; 4. End gland; 5. First stainless steel rod; 6. Second stainless steel rod; 7. Inlet pipe; 8. Outlet pipe; 9. Conductive electrode; 10. End cooling cavity; 11. Side cooling cavity; 12. Gland sealing ring; 13. Nut; 14. Washer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Among them, the orientation terms such as "upper" and "lower" mentioned herein are referenced based on Figure 1 the orientation of

[0017] Please refer to Figure 1-4 , the present invention provides a technical solution: A graphite furnace furnace head electrode cooling device includes a conductive electrode 9; an end cooling cavity 10 is provided on the front end face of the conductive electrode 9, and a side cooling cavity 11 is provided on the side end face of the conductive electrode 9. The end cooling cavity 10 is communicated with the side cooling cavity 11. An end gland 4 and a cooler gland 2 are respectively detachably installed at the orifice of the end cooling cavity 10 and the orifice of the side cooling cavity 11. A pair of through holes are vertically opened at the center of the cooler gland 2. An outlet pipe 8 is installed in the through hole located above, and an inlet pipe 7 is installed in the through hole located below.

[0018] By providing an end cooling cavity 10 and a side cooling cavity 11, the depth of the cavity is determined according to the length of the conductive electrode 9 located outside the furnace body and the electrode specifications when in the working state. The end cooling cavity 10 and the side cooling cavity 11 are connected to form a complete electrode cooling chamber. By disassembling and installing an end gland 4 and a cooler gland 2, the end cooling cavity 10 and the side cooling cavity 11 can be blocked. By providing a through hole at the center of the cooler gland 2, the water inlet pipe 7 and the water outlet pipe 8 can be inserted through the through hole. By installing the water inlet pipe 7, cooling water can enter the cooling chamber of the conductive electrode 9 through the water inlet pipe 7, thereby cooling the conductive electrode 9. By installing the water outlet pipe 8, the cooled water can flow out through the water outlet pipe 8. During the cooling process, the cooling water can directly contact the inner wall of the cooling chamber of the conductive electrode 9, taking away the heat of the conductive electrode 9, reducing the electrode temperature, weakening the high-temperature oxidation effect of the electrode, and extending its service life. And in this way, it can effectively avoid water seepage at the bottom, and the cooling effect is better than that of cooling through multiple separate water pipes at both ends of the electrode. The single-electrode cooling device can be connected to the cooling system for independent operation, or the water inlet and outlet pipes 8 of two electrode cooling devices on the same side can be connected to form a whole, with flexible connection methods. The corresponding positions of the cooler gland 2 are provided with holes for the inlet and outlet cooling pipes. Before installing the cooler gland 2, the water inlet pipe 7 and the water outlet pipe 8 are welded first. The overall structure of the cooler is convenient to disassemble, install, and overhaul.

[0019] Furthermore, the end gland 4 is disassembled and installed at the orifice of the end cooling cavity 10 by cooperating with the end flexible joint bolt 3 and the nut 13, and the cooler gland 2 is disassembled and installed at the orifice of the side cooling cavity 11 by cooperating with the cooler flexible joint bolt 1 and the nut 13.

[0020] By providing the end flexible joint bolt 3 and the nut 13, the end gland 4 can be installed at the orifice of the end cooling cavity 10, thereby facilitating the fixing of the position of the end gland 4 and the disassembly and assembly of the end gland 4. By providing the cooperation of the cooler flexible joint bolt 1 and the nut 13, the cooler gland 2 can be installed at the orifice of the side cooling cavity 11, thereby fixing the position of the cooler gland 2 and facilitating the disassembly and assembly of the cooler gland 2. At the same time, the end flexible joint bolt of the conductive electrode 9 is completely embedded below the electrode end face. While the end face structure ensures the sealing of the cooling cavity, it does not affect the operation of the furnace top pushing device.

[0021] Furthermore, a first fixing member for fixing the end flexible joint bolt 3 and a second fixing member for fixing the cooler flexible joint bolt 1 are provided in the end cooling cavity 10.

[0022] By providing a first fixing member, the position of the end swivel bolt 3 can be fixed, thereby fixing the end gland 4 at the orifice of the end cooling chamber 10. By providing a second fixing member, the position of the cooler swivel bolt 1 can be fixed, thereby fixing the cooler gland 2 at the orifice of the cooling chamber.

[0023] Furthermore, the first fixing member is a first stainless steel rod 5. A circular groove is formed in the end cooling chamber 10. One end of the first stainless steel rod 5 is inserted into the circular groove, and the other end of the first stainless steel rod 5 is placed in the side cooling chamber 11. The first stainless steel rod 5 is detachably connected to the end swivel bolt 3.

[0024] By providing the first stainless steel rod 5, the first stainless steel rod 5 can be passed through the circular hole at one end of the end swivel bolt 3 to connect the end swivel bolt 3 and the first stainless steel rod 5. By forming the circular groove, one end of the first stainless steel rod 5 can be inserted into the circular groove, thereby fixing the position of the first stainless steel rod 5. Furthermore, the positions of the end swivel bolt 3 and the end gland 4 can be fixed. Except for the end cooling chamber 10 and the side cooling chamber 11, only small circular holes are machined inside the end cooling chamber 10 body, thus ensuring the integrity of the conductive electrode 9 and greatly reducing the impact on the overall quality of the conductive electrode 9.

[0025] Furthermore, the second fixing member is a second stainless steel rod 6. A through hole is formed in the second stainless steel rod 6. The second stainless steel rod 6 is detachably mounted on the first stainless steel rod 5 through the through hole. The second stainless steel rod 6 is detachably connected to the cooler swivel bolt 1.

[0026] By providing the second stainless steel rod 6, a through hole is formed at the bottom of the second stainless steel rod 6, enabling one end of the first stainless steel rod 5 to pass through the through hole in the second stainless steel rod 6 and be placed in the end cooling chamber 10, thereby fixing the position of the second stainless steel rod 6. Moreover, the second stainless steel rod 6 passes through the through hole of the cooler swivel bolt 1, connecting the cooler swivel bolt 1 and the second stainless steel rod 6, and fixing the positions of the cooler swivel bolt 1 and the cooler gland 2.

[0027] Furthermore, washers 14 and gland seals 12 are provided between the nut 13 and the cooler gland 2 and between the nut 13 and the end gland 4.

[0028] By providing the washers 14 and the gland seals 12, a sealing effect can be achieved for the overall cooling of the conductive electrode 9.

[0029] Furthermore, one end of the water outlet pipe 8 extends to the center of the end cooling chamber 10.

[0030] By extending one end of the water outlet pipe 8 to the center of the end cooling chamber 10, it is convenient to fill the cooling chamber with cooling water, thereby achieving a better cooling effect.

[0031] Furthermore, high-temperature sealants are pressed into the gaps between the through holes formed in the end gland 4 and the cooler gland 2 and the water pipes, as well as the gaps at the joints of the conductive electrodes 9.

[0032] By pressing in the high-temperature sealant, the sealing performance of the cooling device can be further enhanced.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphitization furnace head electrode cooling device, characterized in that: The invention comprises a conductive electrode (9); the front end surface of the conductive electrode (9) is provided with an end cooling cavity (10); the side end surface of the conductive electrode (9) is provided with a side cooling cavity (11); the end cooling cavity (10) is connected with the side cooling cavity (11); the end pressure cover (4) and the cooler pressure cover (2) are respectively detachably installed at the cavity opening of the end cooling cavity (10) and the cavity opening of the side cooling cavity (11); a pair of through holes are vertically opened at the center of the cooler pressure cover (2); a water outlet pipe (8) is installed in the upper through hole, and a water inlet pipe (7) is installed in the lower through hole.

2. The graphitization furnace head electrode cooling device according to claim 1, characterized in that: The end pressure cover (4) is disassembled and installed at the cavity opening of the end cooling cavity (10) by cooperating with the end hinge bolt (3) and the nut (13), and the cooler pressure cover (2) is disassembled and installed at the cavity opening of the side cooling cavity (11) by cooperating with the cooler hinge bolt (1) and the nut (13).

3. The graphitization furnace head electrode cooling device according to claim 1, characterized in that: A first fixing member for fixing the end hinge bolt (3) and a second fixing member for fixing the cooler hinge bolt (1) are arranged in the end cooling cavity (10).

4. The graphitization furnace head electrode cooling device according to claim 3, characterized in that: The first fixing member is a first stainless steel rod (5), a circular groove is provided in the end cooling cavity (10), one end of the first stainless steel rod (5) is inserted into the circular groove, and the other end of the first stainless steel rod (5) is placed in the side cooling cavity (11), and the first stainless steel rod (5) is detachably connected to the end hinge bolt (3).

5. The graphitization furnace head electrode cooling device according to claim 4, characterized in that: The second fixing member is a second stainless steel rod (6), and a through hole is formed on the second stainless steel rod (6). The second stainless steel rod (6) is removably mounted on the first stainless steel rod (5) through the through hole, and the second stainless steel rod (6) is removably connected to the cooler hinge bolt (1).

6. The graphitization furnace head electrode cooling device according to claim 1, characterized in that: A gasket (14) and a gland sealing ring (12) are provided between the nut (13) and the cooler gland (2), and between the nut (13) and the end gland (4).

7. The graphitization furnace head electrode cooling device according to claim 1, characterized in that: One end of the water outlet pipe (8) extends to the center of the end cooling cavity (10).

8. The graphitization furnace head electrode cooling device according to claim 1, characterized in that: A high-temperature sealant is pressed into the gap between the conductive electrodes (9).

Images