Glass furnace electrode and high-level liquid waste glass curing furnace

Abstract

The invention discloses a glass furnace electrode and a high-level liquid waste glass curing furnace, which can avoid deformation or cracks at the joint of an electrode shaft and the side wall or an electrode tip of a glass furnace and cannot damage the glass furnace. The glass furnace electrode comprises an electrode tip, an electrode shaft and a corrugated pipe. The electrode tip is arranged in the glass furnace and located at the bottom of the glass furnace. The electrode shaft is arranged outside the glass melting furnace, penetrates through the side wall of the glass melting furnace and then is movably connected with the side wall of the glass melting furnace; and one end of the electrode shaft extending into the glass furnace is connected with the electrode tip. The corrugated pipe sleeves the outer side of the part, outside the glass furnace, of the electrode shaft, the first end of the corrugated pipe is fixedly and hermetically connected with the outer wall of the electrode shaft, the second end of the corrugated pipe is fixedly and hermetically connected with the side wall of the glass furnace, and the corrugated pipe is used for absorbing the displacement of the electrode shaft relative to the side wall of the glass furnace.

Description

Technical Field

[0001] This invention belongs to the field of radioactive waste liquid treatment technology, specifically relating to a glass furnace electrode and a high-level radioactive waste liquid glass curing furnace. Background Technology

[0002] The radioactive waste treatment process generates a large amount of high-level radioactive waste (e.g., concentration greater than 100%). (Regarding high-level radioactive waste liquid), currently, high-level radioactive waste liquid vitrification technology is the only high-level radioactive waste liquid vitrification technology that can be applied in engineering. The working principle of high-level radioactive waste liquid vitrification technology is to use a glass furnace to melt the radioactive nuclides in the high-level radioactive waste liquid with glass and then solidify it to prevent the radioactive nuclides from entering the external environment.

[0003] Electrodes are important components that provide Joule heat to glass furnaces. When electricity is applied to the electrodes, Joule heat is generated, which melts the glass in the glass furnace into a liquid state.

[0004] The electrode consists of an electrode head and an electrode shaft. The electrode head is fixed inside the glass furnace, and the electrode shaft is fixed to the side wall of the glass furnace and extends into the furnace to connect with the electrode head. When the electrode is energized, the temperature inside the glass furnace rises, causing a temperature change in the electrode shaft extending into the furnace. This results in dimensional changes in the electrode shaft along its axial direction due to thermal expansion and contraction, creating stress between the electrode shaft and the side wall of the glass furnace, as well as between the electrode shaft and the electrode head. This may cause deformation or cracks at the connection between the electrode shaft and the side wall of the glass furnace or the electrode head, affecting the normal operation of the glass furnace. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art by providing a glass furnace electrode and a high-level radioactive waste liquid glass curing furnace, which can prevent deformation or cracks from occurring at the connection between the electrode shaft and the side wall or electrode head of the glass furnace, and will not damage the glass furnace.

[0006] In a first aspect, embodiments of the present invention provide a glass furnace electrode, comprising an electrode head, an electrode shaft, and a bellows. The electrode head is disposed inside the glass furnace and at the bottom of the glass furnace. The electrode shaft is disposed outside the glass furnace, penetrating through the side wall of the glass furnace and movably connected to the side wall of the glass furnace; one end of the electrode shaft extending into the glass furnace is connected to the electrode head. The bellows is sleeved on the outer side of the portion of the electrode shaft located outside the glass furnace, a first end of the bellows being fixedly and sealingly connected to the outer wall of the electrode shaft, and a second end of the bellows being fixedly and sealingly connected to the side wall of the glass furnace, for absorbing displacement of the electrode shaft relative to the side wall of the glass furnace.

[0007] In some embodiments, the electrode shaft includes an inner shaft tube and an outer shaft tube. The inner shaft tube is disposed outside the glass melting furnace and extends through the side wall of the glass melting furnace into the interior of the electrode head; a thermocouple through-hole is provided inside the inner shaft tube, and the detection end of the thermocouple extends from outside the glass melting furnace through the thermocouple through-hole into the interior of the electrode head. The outer shaft tube is sleeved on the inner shaft tube and extends from outside the glass melting furnace through the side wall of the glass melting furnace into the interior of the glass melting furnace, and is movably connected to the side wall of the glass melting furnace; one end of the outer shaft tube located inside the glass melting furnace is fixedly and sealed to the outer side wall of the inner shaft tube, and a return air channel is formed between the outer shaft tube and the inner shaft tube; a connecting hole is provided on the portion of the inner shaft tube's side wall located inside the glass melting furnace, and the thermocouple through-hole communicates with the return air channel through the connecting hole; the first end of the corrugated pipe is fixed to the outer wall of the outer shaft tube. The inner shaft tube has an air inlet on the side wall outside the glass furnace, which is used to introduce cooling gas; the outer casing tube has an air outlet on the side wall outside the glass furnace.

[0008] In some embodiments, a sound-absorbing device is provided at the air outlet.

[0009] In some embodiments, a thermocouple support is provided at one end of the inner shaft tube located outside the glass furnace, and the thermocouple support is used to fix the thermocouple.

[0010] In some embodiments, a sealing block is further provided inside the inner tube, the sealing block being used to seal the end of the thermocouple through hole located outside the glass furnace. The sensing end of the thermocouple passes through the sealing block from outside the glass furnace and extends into the thermocouple through hole.

[0011] In some embodiments, the electrode head includes an electrode head body and a protective block. The electrode head body is disposed inside a glass melting furnace and at the bottom of the furnace. A discharge trough is formed inside the electrode head body, and a discharge port is formed at the bottom of the discharge trough. The inner shaft tube extends into the electrode head body, and the detection end of the thermocouple extends into the electrode head body. The protective block is disposed in the discharge trough and above the discharge port, and is also connected to the electrode head body. A discharge gap is formed between the protective block and the inner wall of the discharge trough, allowing the molten glass to flow through the discharge gap to the discharge port.

[0012] In some embodiments, the electrode head body includes an outer electrode block and an inner electrode block. The outer electrode block is disposed inside the glass melting furnace and at the bottom of the furnace; a flared hole and a cylindrical mounting hole are formed in the middle of the outer electrode block; the flared hole is located above the mounting hole; an inner shaft tube extends into the outer electrode block, and the detection end of the thermocouple extends into the outer electrode block. The inner electrode block is snapped into the bottom of the mounting hole; a conical hole is formed in the middle of the inner electrode block, and the bottom of the conical hole forms the discharge port; the flared hole and the conical hole combine to form a conical discharge groove. A protective block is connected to the inner electrode block.

[0013] In some embodiments, the upper part of the inner wall of the inner electrode block has multiple through holes, which are located at the same height and are evenly arranged around the center line of the inner electrode block. The bottom circumferential surface of the outer wall of the protective block has multiple insertion holes, each corresponding to one of the through holes. Multiple mounting pins are provided between the protective block and the inner electrode block, each corresponding to one of the through holes. The ends of the mounting pins pass through the inner electrode block from the outside and are inserted into the insertion holes to fix the position of the protective block.

[0014] In some embodiments, a feeding hole is provided at the center of the protective block; and / or, in the direction from top to bottom, the cross-sectional dimensions of the protective block first increase in size and then decrease in size.

[0015] Therefore, the glass furnace electrode provided in this embodiment of the invention, by setting a corrugated tube and sleeved on the outside of the portion of the electrode shaft located outside the glass furnace, fixes and seals the first end of the corrugated tube to the outer wall of the electrode shaft, and fixes and seals the second end of the corrugated tube to the side wall of the glass furnace. The corrugated tube can ensure the airtightness of the glass furnace, and by utilizing the characteristic that the relative positions of the first and second ends of the corrugated tube can change, the relative displacement between the electrode shaft and the side wall of the glass furnace can occur. Therefore, the corrugated tube can absorb the relative displacement between the electrode shaft and the side wall of the glass furnace caused by changes in the size of the electrode shaft due to thermal expansion and contraction, thereby avoiding the deformation or cracks at the connection between the electrode shaft and the side wall or electrode head of the glass furnace in the prior art, and ensuring the normal operation of the glass furnace.

[0016] Secondly, embodiments of the present invention also provide a high-level radioactive waste vitrification furnace, which includes a glass furnace and glass furnace electrodes as described in the first aspect. The glass furnace is used to contain glass and radioactive waste. There are multiple glass furnace electrodes, and the electrode heads of these electrodes are used to heat the glass and radioactive waste within the glass furnace after energization.

[0017] The high-level radioactive waste liquid glass curing furnace provided in this embodiment of the invention has the same beneficial effects as the glass furnace electrode described above, and will not be repeated here. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of this invention, the accompanying drawings used in some embodiments of this invention will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this invention, and those skilled in the art can obtain other drawings based on these drawings. Furthermore, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this invention.

[0019] Figure 1 : A schematic diagram of a glass furnace electrode provided in an embodiment of the present invention;

[0020] Figure 2 : A cross-sectional view of a glass furnace electrode provided in an embodiment of the present invention;

[0021] Figure 3 : A structural diagram of a bellows provided in an embodiment of the present invention;

[0022] Figure 4 :for Figure 2 A magnified view of a portion of region Q1;

[0023] Figure 5 :for Figure 1 A magnified view of a portion of region Q2;

[0024] Figure 6 : A structural diagram of a noise reduction device provided in an embodiment of the present invention;

[0025] Figure 7 : A structural diagram of a thermocouple support provided in an embodiment of the present invention.

[0026] Among them, 1-electrode head; 2-inner shaft tube; 3-end tube; 4-outer connector; 5-electrode shaft; 6-silencing device; 7-bellows; 8-insulating block; 9-thermocouple support; 10-outer electrode block; 11-electrode block; 12-protective block; 13-mounting pin; 14-center ring; 15-outer sleeve; 16-sealing block; 17-silencer pipe section; 18-connecting seat; 19-silencer; 20-first mounting flange; 21-bellows body; 22-second mounting flange; 23-connecting block; 24-pressure rod; 25-compression spring; 26-mounting frame. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] Example 1:

[0029] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a glass furnace electrode, which is applied in a glass furnace to heat the material (e.g., glass body) in the glass furnace after being energized.

[0030] like Figure 1 and Figure 2 As shown, the glass furnace electrode includes an electrode head 1, an electrode shaft 5, and a bellows 7. The electrode head 1 is located inside the glass furnace and at the bottom of the furnace. The electrode shaft 5 is located outside the glass furnace, passing through the side wall and movably connected to it; one end of the electrode shaft 5 extending into the furnace is connected to the electrode head 1. The bellows 7 is sleeved on the outer side of the portion of the electrode shaft 5 located outside the furnace. The first end of the bellows 7 is fixed and sealed to the outer wall of the electrode shaft 5, and the second end is fixed and sealed to the side wall of the furnace, used to absorb displacement of the electrode shaft 5 relative to the side wall of the furnace.

[0031] For example, the material of electrode head 1 can be molybdenum metal or nickel alloy, etc.

[0032] For example, electrode head 1 is fixed to the bottom wall of the glass furnace.

[0033] The electrode shaft 5 is made of a conductive metal and is used to transmit current to the electrode head 1. The electrode shaft 5 is movably connected to the side wall of the glass furnace, so relative displacement can occur between the electrode shaft 5 and the side wall of the glass furnace.

[0034] like Figure 2 As shown, Figure 2 The side wall of the glass furnace is indicated by a double-dotted line. One end of the electrode shaft 5 is located inside the glass furnace, and the other end is located outside the glass furnace.

[0035] like Figure 3 As shown, the bellows 7 includes a first mounting flange 20, a bellows body 21, and a second mounting flange 22. The first mounting flange 20 forms the first end of the bellows 7, and the second mounting flange 22 forms the second end of the bellows 7. The diameter of the first mounting flange 20 is smaller than the diameter of the second mounting flange 22.

[0036] For example, the two ends of the bellows body 21 are connected to the first mounting flange 20 and the second mounting flange 22 respectively by end face welding.

[0037] To prevent the current in electrode shaft 5 from being transmitted to the side wall of the glass furnace through bellows 7, combined with Figure 3 and Figure 4 The second mounting flange 22 is provided with threaded holes, and the glass furnace side wall is provided with mounting frame 26. An insulating block 8 is provided between the second mounting flange 22 and the mounting frame 26. The bolt passes through the insulating gasket, the mounting frame 26 and the insulating block 8 in sequence and then connects to the threaded holes on the second mounting flange 22, so that the second end of the bellows 7 is sealed to the side wall of the glass furnace.

[0038] Or, combine Figure 3 and Figure 5 The second mounting flange 22 has a through hole. The bolt passes through the insulating gasket, the through hole on the second mounting flange 22, and the insulating block 8 in sequence, and then is threaded to the side wall of the glass furnace, so that the second end of the bellows 7 is sealed to the side wall of the glass furnace.

[0039] The two ends of the bellows 7 are respectively sealed to the outer wall of the electrode shaft 5 and the side wall of the glass furnace, thus maintaining the airtightness of the glass furnace.

[0040] The shape of the bellows body 21 can be changed (it can be extended or bent). Therefore, the relative position of the first end and the second end of the bellows 7 can be changed, so that the electrode shaft 5 can be relatively displaced with the side wall of the glass furnace. Thus, the bellows 7 can absorb the relative displacement between the electrode shaft 5 and the side wall of the glass furnace caused by changes in the size (axial dimension) of the electrode shaft 5 due to thermal expansion and contraction. This avoids the deformation or cracks that occur at the connection between the electrode shaft 5 and the side wall of the glass furnace or the electrode head 1 in the prior art, and ensures the normal operation of the glass furnace.

[0041] Therefore, the glass furnace electrode provided in this embodiment of the invention, by setting a corrugated pipe 7 and sleeved on the outside of the portion of the electrode shaft 5 located outside the glass furnace, fixes and seals the first end of the corrugated pipe 7 to the outer wall of the electrode shaft 5, and fixes and seals the second end of the corrugated pipe 7 to the side wall of the glass furnace. The corrugated pipe 7 can ensure the airtightness of the glass furnace, and by utilizing the characteristic that the relative positions of the first and second ends of the corrugated pipe 7 can change, the relative displacement between the electrode shaft 5 and the side wall of the glass furnace can occur. Therefore, the corrugated pipe 7 can absorb the relative displacement between the electrode shaft 5 and the side wall of the glass furnace caused by changes in the size of the electrode shaft 5 due to thermal expansion and contraction, thereby avoiding the deformation or cracks generated at the connection between the electrode shaft 5 and the side wall of the glass furnace or the electrode head 1 in the prior art, and ensuring the normal operation of the glass furnace.

[0042] In some embodiments, such as Figure 2As shown, the electrode shaft 5 includes an inner shaft tube 2 and an outer sleeve tube 15. The inner shaft tube 2 is located outside the glass melting furnace and extends into the electrode head 1 after passing through the side wall of the glass melting furnace. A thermocouple through-hole is provided inside the inner shaft tube 2, and the detection end of the thermocouple passes through the thermocouple through-hole from outside the glass melting furnace and extends into the electrode head 1. The outer sleeve tube 15 is fitted onto the inner shaft tube 2 and extends into the glass melting furnace from outside the glass melting furnace after passing through the side wall of the glass melting furnace, and is movably connected to the side wall of the glass melting furnace. The end of the outer sleeve tube 15 located inside the glass melting furnace is fixed and sealed to the outer side wall of the inner shaft tube 2, forming a return air channel between the outer sleeve tube 15 and the inner shaft tube 2. A connecting hole is provided on the portion of the inner shaft tube 2's side wall located inside the glass melting furnace, and the thermocouple through-hole communicates with the return air channel through the connecting hole. The first end of the corrugated pipe 7 is fixed to the outer wall of the outer sleeve tube 15. The inner shaft tube 2 has an air inlet on the side wall outside the glass furnace, which is used to introduce cooling gas; the outer casing tube 15 has an air outlet on the side wall outside the glass furnace.

[0043] For example, such as Figure 2 As shown, a circular groove is provided on the side of the electrode head 1 facing the inner shaft tube 2. After the inner shaft tube 2 is inserted into the circular groove, it is connected to the electrode head 1 by TIG welding (Tungsten Inert Gas Welding, also known as non-consumable electrode inert gas shielded arc welding).

[0044] The inner tube 2 may include two or more sub-tubes, and adjacent sub-tubes are connected by electron beam welding.

[0045] like Figure 2 As shown, the inner shaft tube 2 is horizontally arranged, and the thermocouple through hole passes through the entire inner shaft tube 2, so that the detection end of the thermocouple can extend into the inside of the electrode head 1 through the thermocouple through hole to detect the temperature of the electrode head 1. This facilitates the subsequent adjustment of the input current to the electrode head 1 based on the temperature of the electrode head 1, thereby controlling the temperature of the electrode head 1.

[0046] For example, the inner diameter of the thermocouple through-hole is larger than the outer diameter of the thermocouple, so that after the thermocouple is inserted into the thermocouple through-hole, there is still enough space for the cooling air entering the thermocouple through-hole to pass through.

[0047] like Figure 2 As shown, a central ring 14 is provided between one end of the outer sleeve 15 located inside the glass furnace and the outer wall of the inner shaft tube 2. The outer ring of the central ring 14 is connected to the end of the outer sleeve 15 by TIG welding, and the inner ring of the central ring 14 is connected to the outer wall of the inner shaft tube 2 by TIG welding, so that one end of the outer sleeve 15 located inside the glass furnace is fixed and sealed to the outer wall of the inner shaft tube 2.

[0048] In this case, the first end of the bellows 7 is fixed to the outer wall of the outer sleeve 15 by welding.

[0049] like Figure 1 As shown, after the inner shaft tube 2 changes in size due to factors such as thermal expansion and contraction, the inner shaft tube 2 causes the outer sleeve tube 15 to move relative to the side wall of the glass furnace. At this time, the corrugated pipe 7 can absorb or compensate for the displacement of the outer sleeve tube 15 relative to the side wall of the glass furnace, ensuring the structural stability of the glass furnace.

[0050] For example, the connecting hole on the side wall of the inner tube 2 is provided near the end of the outer tube 15 located inside the glass furnace.

[0051] Combination Figure 1 and Figure 5 An external connector 4 (e.g., a connecting flange) is provided at the air inlet of the inner shaft tube 2. The external connector 4 is inserted into the air inlet of the inner shaft tube 2 and fixed by TIG welding. The external cooling air pipe is connected to the inner shaft tube 2 through the external connector 4.

[0052] With the above configuration, cooling air can enter the thermocouple through the air inlet and flow out through the return air channel between the outer tube 15 and the inner tube 2 through the connecting hole, so as to cool the part of the inner tube 2 and the outer tube 15 located in the glass furnace.

[0053] In some embodiments, such as Figure 2 and Figure 4 As shown, a silencer 6 is installed at the air outlet.

[0054] For example, such as Figure 2 and Figure 4 As shown, the outer sleeve 15 is connected to an end pipe 3 at one end outside the glass furnace. The end pipe 3 is fixed and sealed to the outer wall of the inner shaft tube 2. The air outlet is located on the end pipe 3, and the silencer 6 is installed at the air outlet of the end pipe 3.

[0055] For example, such as Figure 6 As shown, the silencing device 6 includes a muffler pipe section 17, a connecting seat 18, and a muffler 19. The muffler pipe section 17 is used to discharge cooling air, the connecting seat 18 is used to connect the muffler pipe section 17 and the muffler 19, and the muffler 19 is used for noise reduction.

[0056] By implementing the above settings, the volume of the cooling air discharged from the air outlet can be reduced, thereby preventing the noise from the exhaust gas from affecting the working environment near the glass furnace electrodes.

[0057] In some embodiments, such as Figure 2 As shown, a thermocouple support 9 is provided at one end of the inner shaft tube 2 located outside the glass furnace. The thermocouple support 9 is used to fix the thermocouple.

[0058] like Figure 7As shown, the thermocouple support 9 includes a connecting block 23, a pressure rod 24, and a compression spring 25. The connecting block 23 is a rectangular block and is fixed to one end of the inner shaft tube 2 located outside the glass furnace. A through hole is provided in the middle of the connecting block 23, the size of which allows the thermocouple to pass through. The pressure rod 24 is rotatably mounted on the connecting block 23 via a rotating shaft, and the compression spring 25 is fixed to one side of the connecting block 23 and abuts against the pressure rod 24.

[0059] For example, the tail end of the thermocouple (the end opposite the sensing end) has a fixing groove. When it is necessary to insert the thermocouple into the thermocouple through hole in the inner shaft tube 2, the sensing end of the thermocouple extends into the thermocouple through hole through the through hole in the middle of the connecting block 23. After the fixing groove at the tail end of the thermocouple is aligned with the pressure rod 24, the pressure rod 24 is rotated to press down the pressure rod 24. Figure 7 As shown, a portion of the pressure rod 24 is pressed into the fixing groove at the tail end of the thermocouple to secure it. At this time, the compression spring 25 can maintain the pressed state of the pressure rod 24 to prevent it from loosening.

[0060] With the above setup, the thermocouple can be stably fixed in the thermocouple through hole.

[0061] In some embodiments, such as Figure 4 As shown, a sealing block 16 is also provided inside the inner shaft tube 2. The sealing block 16 is used to seal the end of the thermocouple through hole located outside the glass furnace. The detection end of the thermocouple passes through the sealing block 16 from outside the glass furnace and then extends into the thermocouple through hole.

[0062] For example, the inner tube 2 can be a rubber block.

[0063] With the above settings, as Figure 2 As shown, the cooling air entering the thermocouple through the air inlet can flow entirely into the glass furnace to cool the portions of the inner shaft tube 2 and outer sleeve tube 15 located inside the glass furnace.

[0064] In some embodiments, combined with Figure 1 and Figure 2 The electrode head 1 includes an electrode head body and a protective block 12. The electrode head body is located inside the glass melting furnace and at the bottom of the furnace. A discharge trough is formed inside the electrode head body, and a discharge port is formed at the bottom of the discharge trough. An inner shaft tube 2 extends into the electrode head body, and the detection end of the thermocouple extends into the electrode head body. The protective block 12 is located in the discharge trough and above the discharge port, and the protective block 12 is also connected to the electrode head body. A discharge gap is formed between the protective block 12 and the inner wall of the discharge trough, which allows the molten glass to flow through the discharge gap to the discharge port.

[0065] For example, the electrode head body is embedded in the bottom wall of the glass furnace.

[0066] Understandably, after the molten glass in the glass furnace enters the discharge trough, it is discharged to the outside of the glass furnace through the discharge port.

[0067] For example, such as Figure 2 As shown, a circular groove is provided on the side of the electrode head body facing the inner shaft tube 2. After the inner shaft tube 2 is embedded in the circular groove, it is connected to the electrode head body by TIG welding.

[0068] For example, after the electrode head body and the protective block 12 are connected, the current in the inner shaft tube 2 can flow through the electrode head body to the protective block 12, and the electrode head body and the protective block 12 can heat the glass in the glass furnace at the same time.

[0069] Combination Figure 1 and Figure 2 During the flow of molten glass into the outlet, the protective block 12 can divert and heat the flowing molten glass, making the heating of the molten glass more uniform and allowing the molten glass to carry away the heat from the electrode head 1, reducing localized high temperatures in the electrode head 1 and effectively improving the service life of the electrode head 1. The protective block 12 can also slow down the flow rate of the molten glass during its descent, reducing the impact of the molten glass on the glass furnace electrode, thereby improving the service life of the glass furnace electrode.

[0070] In some embodiments, such as Figure 2 As shown, the electrode head body includes an outer electrode block 10 and an inner electrode block 11. The outer electrode block 10 is disposed inside the glass melting furnace and located at the bottom of the furnace. A flared hole and a cylindrical mounting hole are formed in the middle of the outer electrode block 10; the flared hole is located above the mounting hole. An inner shaft tube 2 extends into the outer electrode block 10, and the detection end of the thermocouple extends into the outer electrode block 10. The inner electrode block 11 is snapped into the bottom of the mounting hole; a conical hole is formed in the middle of the inner electrode block 11, and the bottom of the conical hole forms a discharge port; the flared hole and the conical hole combine to form a conical discharge trough. A protective block 12 is connected to the inner electrode block 11.

[0071] For example, the external electrode block 10 is embedded in the bottom wall of the glass furnace.

[0072] For example, such as Figure 1 and Figure 2 As shown, the outer electrode block 10 is rectangular in shape. A circular groove is provided on the side of the outer electrode block 10 facing the inner shaft tube 2. After the inner shaft tube 2 is inserted into the circular groove, it is connected to the outer electrode block 10 by TIG welding.

[0073] For example, the inner electrode block 11 is cylindrical in shape, and the outer diameter of the cylinder is adapted to the size of the cylindrical mounting hole so that the inner electrode block 11 fits precisely into the mounting hole in the outer electrode block 10, allowing the current in the inner shaft tube 2 to be input into the inner electrode block 11 through the outer electrode block 10. The inner electrode block 11 is also connected to the outer electrode block 10 by electron beam welding.

[0074] For example, such as Figure 2 As shown, the lower edge of the horn hole coincides with the upper edge of the conical hole in the middle of the inner electrode block 11, so that the inner wall of the outer electrode block 10 and the inner wall of the inner electrode block 11 can smoothly transition, reducing the resistance when the glass melt flows through.

[0075] The above-described configuration facilitates the assembly of the electrode head body to form a conical discharge trough. Furthermore, by adjusting the external dimensions of the outer electrode block 10, the glass furnace electrode can be installed in different glass furnaces, improving the adaptability of the glass furnace electrode.

[0076] In some embodiments, such as Figure 1 and Figure 2 As shown, the upper part of the inner wall of the inner electrode block 11 has multiple through holes, which are located at the same height and are evenly arranged around the center line of the inner electrode block 11. The bottom circumferential surface of the outer wall of the protective block 12 has multiple insertion holes, which correspond one-to-one with the through holes. Multiple mounting pins 13 are provided between the protective block 12 and the inner electrode block 11, each corresponding to one of the through holes. The ends of the mounting pins 13 pass through the inner electrode block 11 from the outside and are inserted into the insertion holes to fix the position of the protective block 12.

[0077] like Figure 2 As shown, the through hole extends from the inner wall surface of the inner electrode block 11 to the outer wall surface of the inner electrode block 11.

[0078] like Figure 2 As shown, when installing the protective block 12, the mounting pin 13 is inserted from the outer wall of the inner electrode block 11, and then extends from the inner wall of the electrode block 11 into the insertion hole of the protective block 12 to realize the installation of the mounting pin 13.

[0079] With the above setup, the position of the protective block 12 can be fixed by multiple mounting pins 13.

[0080] In some embodiments, such as Figure 2 As shown, a feeding hole is provided at the center of the protective block 12 so that materials can be fed synchronously through the feeding hole.

[0081] For example, the size of the feed hole gradually increases from top to bottom to make the feeding of the glass melt in the feed hole smoother.

[0082] In some embodiments, such as Figure 2 As shown, in the direction from top to bottom, the size of the cross-section of the protective block 12 first increases from small to large, and then decreases from large to small.

[0083] For example, the shape of the protection block 12 can be a polyhedron.

[0084] By gradually increasing the size of the upper half of the protective block 12, a feed channel of decreasing size can be formed between the upper half of the protective block 12 and the outer electrode block 10, thereby making it easier for the molten glass above the outer electrode block 10 to flow into the conical discharge trough.

[0085] For example, such as Figure 2 As shown, the inclination of the lower outer wall of the protective block 12 is the same as the inclination of the inner wall of the inner electrode block 11.

[0086] By gradually reducing the size of the lower half of the protective block 12, the gap between the lower half of the protective block 12 and the inner wall of the electrode block 11 can be prevented from being too small, which would affect the feeding speed of the glass melt.

[0087] Example 2:

[0088] This invention also provides a high-level radioactive waste glass curing furnace, which includes a glass furnace and the glass furnace electrodes described in Example 1. The glass furnace is used to contain the glass and radioactive waste. There are multiple glass furnace electrodes, and the electrode heads 1 of these electrodes are used to heat the glass and radioactive waste inside the glass furnace after energization.

[0089] For example, radioactive waste can be high-level liquid waste (e.g., with a concentration greater than...). (waste liquid).

[0090] For example, by controlling the flow of alternating current through multiple glass furnace electrodes, a circuit is created between the different glass furnace electrodes to generate heat, which can heat the glass and radioactive waste in the glass furnace into a homogeneous glass melt. After the homogeneous glass melt is cast into a solid body, the radioactive nuclides in the radioactive waste can be solidified and isolated, reducing the impact on the external biosphere.

[0091] The glass furnace electrode can prevent deformation or cracks at the connection between the electrode shaft 5 and the side wall of the glass furnace or the electrode head 1 caused by changes in electrode size due to thermal expansion and contraction, thus ensuring the structural stability of the glass furnace. This enables the glass furnace to stably solidify radionuclides in high-level radioactive waste liquid and ensure the solidification efficiency of high-level radioactive waste liquid.

[0092] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A glass melter electrode characterized by, The utility model relates to a glass melting furnace electrode head and electrode shaft sealing structure, including: Electrode head (1) is arranged in the glass melting furnace and is at the bottom of glass melting furnace; Electrode shaft (5) is arranged outside the glass melting furnace and is connected with the side wall of glass melting furnace after penetrating the side wall of glass melting furnace, and one end of electrode shaft (5) that extends into glass melting furnace is connected with electrode head (1); And, Bellows (7) are sleeved on the outside of the part of electrode shaft (5) outside glass melting furnace, the first end of bellows (7) is fixed and sealed with the outer wall of electrode shaft (5), and the second end of bellows (7) is fixed and sealed with the side wall of glass melting furnace, for absorbing the displacement between electrode shaft (5) and the side wall of glass melting furnace.

2. The glass melter electrode of claim 1, wherein, Electrode shaft (5) includes: Inner shaft tube (2) is arranged outside the glass melting furnace and is connected with the side wall of glass melting furnace after penetrating the side wall of glass melting furnace, and the inner side of inner shaft tube (2) is provided with thermocouple through hole, and the detection end of thermocouple extends into the inner side of electrode head (1) after penetrating the thermocouple through hole from the outside of glass melting furnace;And, Outer sleeve tube (15) is sleeved on the inner shaft tube (2) and extends into glass melting furnace after penetrating the side wall of glass melting furnace from the outside of glass melting furnace and is connected with the side wall of glass melting furnace, and one end of outer sleeve tube (15) in glass melting furnace is fixed and sealed with the outer side wall of inner shaft tube (2), and the return air passage is formed between outer sleeve tube (15) and inner shaft tube (2), the side wall of inner shaft tube (2) is provided with communication hole on the part in glass melting furnace, the thermocouple through hole is communicated with the return air passage through the communication hole, and the first end of bellows (7) is fixed on the outer wall of outer sleeve tube (15); The inner shaft tube (2) is provided with air inlet on the side wall outside glass melting furnace, and the air inlet is used for passing in cooling gas, and the outer sleeve tube (15) is provided with air outlet on the side wall outside glass melting furnace.

3. The glass melter electrode of claim 2, wherein, The air outlet is provided with silencing device (6).

4. The glass melter electrode of claim 2, wherein, The inner shaft tube (2) is provided with thermocouple support seat (9) on one end outside glass melting furnace, and the thermocouple support seat (9) is used for fixing the thermocouple.

5. The glass melter electrode of claim 4, wherein, The inner shaft tube (2) is further provided with sealing block (16), and the sealing block (16) is used for sealing one end of thermocouple through hole outside glass melting furnace; The detection end of thermocouple extends into the thermocouple through hole after penetrating the sealing block (16) from the outside of glass melting furnace.

6. The glass melter electrode of claim 2, wherein, Electrode head (1) includes: Electrode head main body is arranged in the glass melting furnace and is at the bottom of glass melting furnace, and the inner side of electrode head main body forms discharge slot, and the bottom of discharge slot forms discharge port;The inner side of inner shaft tube (2) extends into the inner side of electrode head main body, and the detection end of thermocouple extends into the inner side of electrode head main body;And, A protection block (12) is arranged in the discharge slot and above the discharge port, and is connected with the electrode head body; a discharge gap is formed between the protection block (12) and the inner side wall of the discharge slot, for allowing the molten glass to flow to the discharge port through the discharge gap.

7. The glass melter electrode of claim 6, wherein, The electrode head body comprises: An outer electrode block (10) is arranged in the glass melting furnace and at the bottom of the glass melting furnace; a trumpet hole and a cylindrical mounting hole are formed in the middle of the outer electrode block (10); the trumpet hole is above the mounting hole; the inner shaft tube (2) extends into the inner part of the outer electrode block (10), and the detection end of the thermocouple extends into the inner part of the outer electrode block (10); and An inner electrode block (11) is clamped at the bottom of the mounting hole; a conical hole is formed in the middle of the inner electrode block (11), and the bottom of the conical hole forms the discharge port; the trumpet hole and the conical hole combine to form a conical discharge slot; The protection block (12) is connected with the inner electrode block (11).

8. The glass melter electrode of claim 7, wherein, A plurality of through holes are formed in the upper part of the inner wall surface of the inner electrode block (11), the plurality of through holes are at the same height, and are uniformly arranged around the center line of the inner electrode block (11); A plurality of insertion holes are circumferentially arranged at the bottom of the outer wall surface of the protection block (12), and the plurality of insertion holes are arranged one-to-one corresponding to the plurality of through holes; A plurality of mounting pins (13) are arranged between the protection block (12) and the inner electrode block (11), the plurality of mounting pins (13) are arranged one-to-one corresponding to the plurality of through holes, and the end part of the mounting pin (13) is inserted into the insertion hole after passing through the inner electrode block (11) from the outside of the inner electrode block (11), so as to fix the position of the protection block (12).

9. The glass melting furnace electrode according to claim 7, wherein A discharge hole is formed at the center position of the protection block (12); and / or In the direction from top to bottom, the size of the cross section of the protection block (12) first increases and then decreases.

10. A high-level waste glassification melter characterized by, Comprise: A glass melting furnace for accommodating a glass body and radioactive waste; And The glass melting furnace electrode according to any one of claims 1-9, the number of the glass melting furnace electrodes is multiple, and the electrode heads (1) of the multiple glass melting furnace electrodes are used to heat the glass body and radioactive waste in the glass melting furnace after being electrified.

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