Cooling device for thermal superconducting electrode material sintering furnace

Abstract

The invention relates to the technical field of heat exchange equipment, and discloses a heat superconducting type electrode material sintering furnace cooling device which comprises a superconducting heat exchange tube set, the superconducting heat exchange tube set comprises a plurality of superconducting heat exchange tubes, and the superconducting heat exchange tubes are arranged on a cooling section of a sintering furnace. The hot section of the superconducting heat exchange tube is located in the cooling section, and the cold section of the superconducting heat exchange tube is located outside the cooling section. The heat exchange working medium in the superconducting heat exchange pipe can absorb heat in the hot section, evaporate and rise to the cold section, condense in the cold section, release heat and flow back to the hot section, and reciprocating circulation is achieved. The superconductive heat exchange tube set further comprises a plurality of hot side fins arranged on the hot section in a sleeving mode, the section of each hot side fin in the vertical direction is in a parabola shape, and an opening of the parabola shape faces the bottom of the cooling section. The cooling device for the thermal superconducting electrode material sintering furnace can improve the cooling efficiency of the cooling section.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and particularly to a cooling device for a thermal superconducting type electrode material sintering furnace. Background Art

[0002] During the production of the electrode material lithium iron phosphate, after uniformly mixing raw materials lithium carbonate, iron phosphate, and glucose, they are put into a crucible and then calcined in an electrode material sintering furnace. The sintering furnace is sequentially divided into a heating section, a heat preservation section, and a cooling section according to the material flow direction. Generally, lithium iron phosphate needs to be heated to above 800 °C, then kept warm and calcined to produce lithium iron phosphate products. The temperature of the materials at the outlet of the sintering furnace generally needs to be no more than 100 °C. Therefore, the output of the calcination process is limited by the cooling rate of the materials. Due to process limitations, the heat preservation duration and the heating process duration of the materials need to be ensured, that is, the residence duration of the materials in the heating section and the heat preservation section is generally a fixed value. This means that with a certain total length of the sintering furnace, the better the cooling effect, the shorter the required length of the cooling section, and the longer the lengths of the heat preservation section and the heating section. It can ensure the residence time of the materials in the high-temperature section required by the process on the premise of a faster conveying speed, thereby improving the production rate of a single production line. Summary of the Invention

[0003] An object of the present invention is to provide a cooling device for a thermal superconducting type electrode material sintering furnace, which can improve the cooling efficiency of the cooling section, thereby improving the production rate of a single production line.

[0004] With the above concept, the technical solution adopted by the present invention is as follows:

[0005] Provide a cooling device for a thermal superconducting type electrode material sintering furnace, including:

[0006] A superconducting heat exchange tube group, including a plurality of superconducting heat exchange tubes. The plurality of superconducting heat exchange tubes are arranged in the cooling section of the sintering furnace. The hot section of the superconducting heat exchange tube is located inside the cooling section, and the cold section of the superconducting heat exchange tube is located outside the cooling section. Among them, the heat exchange working medium in the superconducting heat exchange tube can absorb heat and evaporate in the hot section and rise to the cold section, and condense and release heat in the cold section and flow back to the hot section, circulating reciprocally;

[0007] The superconducting heat exchange tube group further includes a plurality of hot side fins sleeved on the hot section. The vertical cross-section of the hot side fins is parabolic, and the opening of the parabola faces the bottom of the cooling section.

[0008] Optionally, the superconducting heat exchange tube group includes a first superconducting heat exchange tube group. The first superconducting heat exchange tube group includes a plurality of first superconducting heat exchange tubes and a plurality of first hot side fins. A plurality of the first hot side fins are sleeved on the hot section of one first superconducting heat exchange tube;

[0009] The superconducting heat exchange tube group further includes a second superconducting heat exchange tube group, which includes a plurality of second superconducting heat exchange tubes and a plurality of second hot-side fins. The hot section of one of the second superconducting heat exchange tubes is sleeved with a plurality of the second hot-side fins;

[0010] The first hot-side fins are located above the second hot-side fins in the vertical direction, and the projections of the first hot-side fins and the second hot-side fins in the vertical direction jointly cover the material in the cooling section.

[0011] Optionally, the projections of the first hot-side fins and the second hot-side fins in the vertical direction are both circular.

[0012] Optionally, the first superconducting heat exchange tube passes through the center of the projection of the first hot-side fin in the vertical direction. The distance between two adjacent first superconducting heat exchange tubes in the horizontal direction is L1, and the diameter of the projection of the first hot-side fin in the vertical direction is D1, where 30 mm ≥ L1 - D1 ≥ 0 mm; and / or,

[0013] The second superconducting heat exchange tube passes through the center of the projection of the second hot-side fin in the vertical direction. The distance between two adjacent second superconducting heat exchange tubes in the horizontal direction is L2, and the diameter of the projection of the second hot-side fin in the vertical direction is D2, where 30 mm ≥ L2 - D2 ≥ 0 mm.

[0014] Optionally, the number of the hot-side fins sleeved on the hot section of a single superconducting heat exchange tube is N, where 10 ≥ N ≥ 5;

[0015] The distance between two adjacent hot-side fins in the vertical direction is H3, and H3 ≥ 10 mm.

[0016] Optionally, when the thermal radiation of the material in the cooling section reaches the hot-side fins along the vertical direction and is reflected on the superconducting heat exchange tube, it converges into a focus P. The distance between the focus P and the end of the hot section away from the cold section is H2, and H2 ≥ 50 mm.

[0017] Optionally, an endothermic coating is provided on the surface of the hot section; and / or,

[0018] A heat-reflecting coating is provided on the surface of the hot-side fins.

[0019] Optionally, the heat-superconducting type electrode material sintering furnace cooling device further includes a mounting assembly, which includes a first seal, a second seal and a mounting member. The first seal is in sealing contact with the outer wall of the cooling section, the second seal is in sealing contact with the inner wall of the cooling section, and the mounting member is sleeved on the cold section and presses against one side of the first seal away from the outer wall of the cooling section.

[0020] Optionally, at least one cold-side fin is sleeved on one of the cold sections.

[0021] Another object of the present invention is to provide a sintering furnace, which can improve the cooling efficiency of the cooling section, thereby increasing the production rate of a single production line.

[0022] As conceived above, the technical solution adopted by the present invention is as follows:

[0023] Provide a sintering furnace, including a cooling section and the above-mentioned cooling device for a hot superconducting electrode material sintering furnace, and the cooling device for the hot superconducting electrode material sintering furnace is arranged in the cooling section.

[0024] The beneficial effects of the present invention are as follows:

[0025] The cooling device for the hot superconducting electrode material sintering furnace proposed by the present invention includes a superconducting heat exchange tube group. The superconducting heat exchange tube group includes a plurality of superconducting heat exchange tubes. The plurality of superconducting heat exchange tubes are arranged in the cooling section of the sintering furnace. The hot section of the superconducting heat exchange tube is located inside the cooling section, and the cold section of the superconducting heat exchange tube is located outside the cooling section. Among them, the heat exchange working medium in the superconducting heat exchange tube can absorb heat and evaporate in the hot section and rise to the cold section, and condense and release heat in the cold section and flow back to the hot section, reciprocatingly circulating. The superconducting heat exchange tube is used to replace the tube in the traditional technology. A certain amount of liquid working medium is filled inside the superconducting heat exchange tube. For example, pure water can be selected as the working medium. When the hot section located inside the cooling section is heated, the liquid water evaporates and absorbs heat, and the generated water vapor condenses and releases heat in the cold section, thereby transferring the heat inside the furnace body of the sintering furnace to the outside of the furnace body. The condensed water spontaneously flows to the bottom hot section under the action of gravity to complete the cycle, and has the characteristics of self-driving and one-way heat conduction, without the need for external power, so no vibration will be generated, and the vibration generated when the cooling water flows in the tube can be avoided, and the fatigue stress caused at the welding joint between the tube and the furnace body can be avoided, thereby preventing the sealing performance of the sintering furnace from being affected.

[0026] The superconducting heat exchange tube group further includes a plurality of hot-side fins sleeved on the hot section. The cross-section of the hot-side fins in the vertical direction is parabolic, and the opening of the parabola faces the bottom of the cooling section. This parabolic setting enables the thermal radiation of the material to be focused on the superconducting heat exchange tube, realizing heat transfer enhancement. In addition, the projection area of the plurality of hot-side fins in the vertical direction can completely cover the material inside the cooling section, which can ensure that the radiant heat of the material at the bottom of the sintering furnace can be completely blocked by the hot-side fins, thereby improving the heat exchange efficiency of the superconducting heat exchange tube group, ensuring the cooling effect of the cooling section, so that the required length of the cooling section is shorter, and thus the lengths of the insulation section and the heating section are longer. It can ensure the residence time of the material in the insulation section and the heating section required by its process under the premise of a faster conveying speed of the material, and further increase the production rate of a single production line.

[0027] The sintering furnace proposed by the present invention includes a cooling section and the above-mentioned cooling device for a hot superconducting electrode material sintering furnace, and the cooling device for the hot superconducting electrode material sintering furnace is arranged in the cooling section. The cooling efficiency of the cooling section of this sintering furnace is improved, thereby increasing the production rate of a single production line. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the cooling section provided by the prior art;

[0029] Figure 2 is a schematic structural diagram of the first perspective of the cooling section provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic structural diagram of the second perspective of the cooling section provided by an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the position of the hot-side fins provided by an embodiment of the present invention;

[0032] Figure 5 is a schematic structural diagram of a partial superconducting heat exchange tube group provided by an embodiment of the present invention;

[0033] Figure 6 is a cross-sectional view of a partial superconducting heat exchange tube group provided by an embodiment of the present invention;

[0034] Figure 7 is a partial assembly drawing of the installation component and the superconducting heat exchange tube group provided by an embodiment of the present invention.

[0035] In the figures:

[0036] 1. Superconducting heat exchange tube group; 11. Superconducting heat exchange tube; 111. Hot section; 112. Cold section; 1101. First superconducting heat exchange tube; 1102. Second superconducting heat exchange tube; 12. Hot-side fins; 1201. First hot-side fin; 1202. Second hot-side fin; 13. Cold-side fins;

[0037] 2. Installation component; 21. First seal; 211. First limit plate; 212. First gasket; 22. Second seal; 221. Second limit plate; 222. Second gasket; 23. Mounting piece;

[0038] 100. Cooling section; 200. Tube bundle; 300. Conveying device. Detailed Embodiments

[0039] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. Additionally, it should be noted that only the parts related to the present invention rather than all are shown in the drawings for the convenience of description.

[0040] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the", and "on the" second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the", and "under the" second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0042] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments.

[0044] Such as Figure 1As shown, when the existing sintering furnace is working properly, nitrogen is introduced into the interior of the sintering furnace as a protective gas from the bottom and carries gaseous by-products away from the flue. However, the flow rate of the introduced nitrogen protective gas is generally relatively low. Excessive flow rate will cause the powder in the sagger to overflow. Therefore, the cooling section 100 generally relies only on natural convection and radiative heat transfer for heat dissipation. The existing cooling section 100 generally uses tube bundles 200 for cooling. The axial direction of the tube bundles 200 is parallel to the ground and perpendicular to the material flow direction at the same time. The material is placed on the conveying device 300 and moves along the extension direction of the conveying device 300. Referring to Figure 1 , if the extension direction of the conveying device 300 is the x-direction, then the extension direction of the tube bundles is the y-direction, and the x-direction is perpendicular to the y-direction. In addition, the height direction of the cooling section 100 is the z-direction, the aforementioned y-direction is the width direction of the cooling section 100, and the x-direction is the length direction of the cooling section 100. The z-direction is perpendicular to both the x-direction and the y-direction. Considering the furnace body sealing and structural integrity of the sintering furnace, the number of single-layer tube bundles 200 should not be too many, and the tube pitch is relatively large, generally greater than 2 to 3 times the tube diameter. To increase the heat transfer area, a multi-layer tube row staggered method is generally adopted. However, because the axis of the tube bundles 200 is perpendicular to the material flow direction, the projected area is small, and the effective radiation area is only the orthographic projection area of the tube bundles 200. And because the tube bundles 200 pass through the furnace body, the internal fins are generally installed in a way that the normal direction is consistent with the axis of the tube bundles 200. Although this installation method can increase the convective surface, the radiation surface hardly increases. This leads to difficulties in installation transformation and limited increase in heat transfer area when enhancing heat transfer on the surface of the tube bundles 200, resulting in limited cooling effect of the cooling section 100. Therefore, there is an urgent need for a cooling device for a thermal superconducting electrode material sintering furnace to solve the above problems.

[0045] As Figures 2 to 7 shown, this embodiment provides a cooling device for a thermal superconducting electrode material sintering furnace, including a superconducting heat exchange tube group 1. The superconducting heat exchange tube group 1 includes a plurality of superconducting heat exchange tubes 11. The plurality of superconducting heat exchange tubes 11 are arranged in the cooling section 100 of the sintering furnace. The hot section 111 of the superconducting heat exchange tube 11 is located inside the cooling section 100, and the cold section 112 of the superconducting heat exchange tube 11 is located outside the cooling section 100. Among them, the heat transfer working medium in the superconducting heat exchange tube 11 can absorb heat and evaporate in the hot section 111 and rise to the cold section 112, and condense and release heat in the cold section 112 and flow back to the hot section 111 in a reciprocating cycle. A certain amount of liquid working medium is filled inside the superconducting heat exchange tube 11. For example, pure water can be selected as the working medium. When the hot section 111 located inside the cooling section 100 is heated, the liquid water evaporates and absorbs heat, and the generated water vapor condenses and releases heat in the cold section 112, thereby transferring the heat inside the furnace body to the outside of the furnace body. The condensed water spontaneously flows to the bottom hot section 111 under the action of gravity to complete the cycle, having the characteristics of self-driving and unidirectional heat conduction.

[0046] The superconducting heat exchange tube group 1 further includes a plurality of hot-side fins 12 sleeved on the hot section 111. The vertical cross-section of the hot-side fins 12 is parabolic, and the opening of the parabola faces the bottom of the cooling section 100. In addition, the projection area of the plurality of hot-side fins 12 in the vertical direction can completely cover the materials in the cooling section 100, so that the radiant heat of the materials located at the bottom of the sintering furnace can be completely blocked by the hot-side fins 12, thereby improving the heat exchange efficiency of the superconducting heat exchange tube group 1, ensuring the cooling effect of the cooling section 100, so that the required length of the cooling section 100 is shorter, while the lengths of the heat preservation section and the heating section are longer, which can ensure the residence time of the materials in the heat preservation section and the heating section required by the process on the premise of a faster conveying speed, and further improving the production rate of a single production line. Secondly, the vertical cross-section of the hot-side fins 12 is parabolic, and the opening of the parabola faces the bottom of the cooling section 100, that is, the minimum height of the projection of the hot-side fins 12 in the horizontal direction in the vertical direction is H1, and H1>0 mm. This parabolic setting enables the heat radiation of the materials to be focused on the superconducting heat exchange tube 11, realizing heat transfer enhancement. In this application, the cold section 112 dissipates heat through air or water.

[0047] In the traditional technology, the cooling medium in the tube bank 200 is water or air. Replacing the tube bank 200 in the traditional technology with the superconducting heat exchange tube 11 can avoid the vibration generated when the cooling water flows in the tube bank 200, and avoid the influence on the sealing performance of the sintering furnace caused by the fatigue stress at the welded joint of the tube bank 200 and the furnace body. Moreover, because the water cooling method has a relatively low temperature, generally about 40°C, its heat is usually dissipated into the environment through a cooling tower, and it is difficult to carry out effective waste heat recovery. In the technical solution of this application, because the heat exchange efficiency of the superconducting heat exchange tube 11 is relatively high, for example, when using water to dissipate the heat of the cold section 112, the temperature of the water rises, and generally the water temperature will rise to about 60°C, which can be used for domestic water to realize the recovery and utilization of waste heat. In addition, replacing the tube bank 200 in the traditional technology with the superconducting heat exchange tube 11 can also avoid the danger caused by the excessive pressure in the tube bank 200 when the cooling water circulation stops due to a power outage or a similar failure and the tube bank 200 is filled with cooling water.

[0048] In the tube bank 200 in the section with a relatively high material temperature, air is usually used as the cooling medium. In this embodiment, replacing the tube bank 200 in the traditional technology with the superconducting heat exchange tube 11 greatly improves the cooling efficiency.

[0049] Such as Figure 6As shown, in specific implementation, the specific shape of the parabolic hot-side fin 12 and its position installed on the superconducting heat exchange tube 11 are set according to the following criteria, that is, to ensure that the thermal radiation of the material in the cooling section 100 reaches the hot-side fin 12 in the vertical direction and converges to the focus P when reflected on the superconducting heat exchange tube 11, and the distance between the focus P and the end of the hot section 111 away from the cold section 112 is H2, where H2≥50mm. Since the thermal radiation direction of the material in the cooling section 100 is not necessarily all in the vertical direction, the above setting can be used to ensure that the foci formed by the thermal radiation of the material in the non-vertical direction can also fall on the superconducting heat exchange tube 11 as much as possible, so as to ensure the heat exchange efficiency of the superconducting heat exchange tube 11, so as to ensure that even when the number of the set hot-side fins 12 is small, the heat transfer enhancement can still be effectively achieved.

[0050] Optionally, as Figure 3 shown, the superconducting heat exchange tube group 1 includes a first superconducting heat exchange tube group, the first superconducting heat exchange tube group includes a plurality of first superconducting heat exchange tubes 1101 and a plurality of first hot-side fins 1201, and the hot section 111 of a first superconducting heat exchange tube 1101 is sleeved with a plurality of first hot-side fins 1201. The superconducting heat exchange tube group 1 includes a second superconducting heat exchange tube group, the second superconducting heat exchange tube group includes a plurality of second superconducting heat exchange tubes 1102 and a plurality of second hot-side fins 1202, and the hot section 111 of a second superconducting heat exchange tube 1102 is sleeved with a plurality of second hot-side fins 1202. The first hot-side fins 1201 are located above the second hot-side fins 1202 in the vertical direction. By overlapping the first hot-side fins 1201 and the second hot-side fins 1202 in the vertical direction, it is ensured that the common projection of the first hot-side fins 1201 and the second hot-side fins 1202 in the vertical direction can completely cover the material in the cooling section 100. In specific implementation, the length of the first superconducting heat exchange tube 1101 is less than the length of the second superconducting heat exchange tube 1102, so as to ensure that when the first superconducting heat exchange tube 1101 and the second superconducting heat exchange tube 1102 are both vertically arranged and their tops are aligned, the bottom end of the first superconducting heat exchange tube 1101 is located above the bottom end of the second superconducting heat exchange tube 1102, so as to avoid the installation area of the second hot-side fins 1202 by the first superconducting heat exchange tube 1101 and facilitate assembly.

[0051] Optionally, as Figure 4As shown, the projections of the first hot-side fin 1201 and the second hot-side fin 1202 in the vertical direction are both circular. In this embodiment, the first hot-side fin 1201 and the second hot-side fin 1202 have the same size, that is, the first hot-side fin 1201 and the second hot-side fin 1202 do not need to be distinguished during assembly and production. Since the projections of the first hot-side fin 1201 and the second hot-side fin 1202 in the vertical direction are both circular, there are gaps between the projection areas of multiple second hot-side fins 1202. By arranging the first hot-side fin 1201 and the second hot-side fin 1202 in a vertical dislocation, the gaps can be filled, so as to ensure the covering effect of the common projection of the hot-side fins 12 on the material in the cooling section 100 and ensure the heat radiation area.

[0052] Optionally, as Figure 4 shown, the first superconducting heat exchange tube 1101 passes through the center of the projection of the first hot-side fin 1201 in the vertical direction. The horizontal distance between two adjacent first superconducting heat exchange tubes 1101 is L1, and the diameter of the projection of the first hot-side fin 1201 in the vertical direction is D1, and 30mm ≥ L1 - D1 ≥ 0mm. That is, the arrangement positions of two adjacent first superconducting heat exchange tubes 1101 enable the edges of two adjacent first hot-side fins 1201 to be in contact, or enable the edges of two adjacent first hot-side fins 1201 to ensure an appropriate distance, so as to reserve assembly errors and facilitate assembly.

[0053] Similarly, the second superconducting heat exchange tube 1102 passes through the center of the projection of the second hot-side fin 1202 in the vertical direction. The horizontal distance between two adjacent second superconducting heat exchange tubes 1102 is L2, and the diameter of the projection of the second hot-side fin 1202 in the vertical direction is D2, and 30mm ≥ L2 - D2 ≥ 0mm. That is, the arrangement positions of two adjacent second superconducting heat exchange tubes 1102 enable the edges of two adjacent second hot-side fins 1202 to be in contact, or enable the edges of two adjacent second hot-side fins 1202 to ensure an appropriate distance, so as to reserve assembly errors and facilitate assembly.

[0054] Optionally, the number of hot-side fins 12 sleeved on the hot section 111 of a superconducting heat exchange tube 11 is N, and 10 ≥ N ≥ 5. During the process of the gas in the cooling section 100 carrying the heat of the material and rising, the hot gas will flow through the flow channels between adjacent hot-side fins 12, and the hot gas contacts the hot-side fins 12 to conduct heat. A certain number of hot-side fins 12 can ensure the heat exchange area, thereby improving the heat exchange efficiency. The vertical distance between two adjacent hot-side fins 12 is H3, and H3 ≥ 10mm. On the one hand, it is convenient for the assembly of multiple hot-side fins 12 on the superconducting heat exchange tube 11. On the other hand, it avoids the flow channels between two adjacent hot-side fins 12 being blocked due to the contact of the hot-side fins 12 caused by assembly or processing errors, affecting the flow of the hot gas.

[0055] Furthermore, a heat absorbing coating is provided on the surface of the hot section 111. The heat absorbing coating can also be understood as a high-absorption coating, and specifically, the absorptivity can be greater than or equal to 0.7. The high-absorption coating is formed by coating a high-absorption material on the surface of the hot section 111, and the high-absorption material can be graphite, so as to enhance the heat absorption capacity of the hot section 111, thereby enhancing the radiation heat transfer efficiency of the hot section 111. In specific implementation, taking a lithium iron phosphate sintering furnace as an example, the flow rate of the gas inside is extremely low, so the erosion effect of dust on the high-absorption coating can be almost ignored.

[0056] Optionally, a heat reflective coating is provided on the surface of the hot side fin 12. The heat reflective coating can also be understood as a high reflectivity coating, specifically, the reflectivity can be greater than or equal to 0.7. The high reflectivity coating is formed by plating a high reflectivity material on the surface of the hot side fin 12, and the high reflectivity material can be silver, so as to enhance the heat reflection ability of the hot side fin 12, thereby enhancing the radiation heat transfer efficiency of the hot side fin 12. In specific implementation, taking a lithium iron phosphate sintering furnace as an example, the flow rate of the gas inside is extremely low, so the erosion effect of dust on the high reflectivity coating can be almost ignored.

[0057] Furthermore, the thermal superconducting electrode material sintering furnace cooling device further includes a mounting assembly 2, which includes a first sealing member 21, a second sealing member 22 and a mounting member 23, wherein the first sealing member 21 is in sealing contact with the outer wall of the cooling section 100, the second sealing member 22 is in sealing contact with the inner wall of the cooling section 100, and the mounting member 23 is sleeved on the cooling section 112 and presses against the side of the first sealing member 21 away from the outer wall of the cooling section 100. Figure 7 As shown, in this embodiment, the first sealing member 21 includes a first limiting plate 211 and a first gasket 212, the second sealing member 22 includes a second limiting plate 221 and a second gasket 222, and the superconducting heat exchange tube 11 passes through the second limiting plate 221, the second gasket 222, the furnace wall of the cooling section 100, the first gasket 212 and the first limiting plate 211 in sequence from bottom to top. The second limiting plate 221 is welded to the superconducting heat exchange tube 11, and when assembling, when the superconducting heat exchange tube 11 moves upward to sandwich the second gasket 222 between the second limiting plate 221 and the furnace wall, the superconducting heat exchange tube 11 is considered to be moved into place. The mounting member 23 is a nut. The cold section 112 of the superconducting heat exchange tube 11 is provided with an external thread section. The nut is passed through the external thread section and can rotate on the external thread section until the nut presses against the first limiting plate 211 so that the first gasket 212 is clamped between the first limiting plate 211 and the furnace wall, thereby ensuring the sealed assembly of the connection between the superconducting heat exchange tube 11 and the furnace wall.

[0058] Optionally, a cold section 112 is sleeved with at least one cold-side fin 13. The cold-side fin 13 is used to increase the heat exchange area between the cold section 112 and the cooling medium, thereby improving the cooling efficiency of the cold section 112. The cold section 112 of the superconducting heat exchange tube 11 can be immersed in the cooling medium, and the cooling medium includes but is not limited to water, refrigerant or air. The form of the cold-side fin 13 can be designed according to the specific type of the cooling medium. For example, when the cooling medium is air, flat perforated aluminum fins can be used to sleeve the cold section 112 of the superconducting heat exchange tube 11 to enhance the heat removal effect, thereby improving the heat exchange efficiency of the superconducting heat exchange tube 11.

[0059] This embodiment also provides a sintering furnace, which includes a heating section, a heat preservation section, a cooling section 100 and the above-mentioned cooling device for the hot superconducting electrode material sintering furnace. The heating section, the heat preservation section and the cooling section 100 are connected in sequence, and the cooling device for the hot superconducting electrode material sintering furnace is arranged in the cooling section 100. The cooling efficiency of the cooling section 100 of this sintering furnace is improved, thereby the production rate of a single production line can be increased.

[0060] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention has various changes and modifications, and these changes and modifications all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Cooling device for sintering furnace of thermosuperconducting electrode material, characterized in that, Comprising: A superconducting heat exchange tube group (1), including a plurality of superconducting heat exchange tubes (11). The plurality of superconducting heat exchange tubes (11) are arranged in the cooling section (100) of the sintering furnace. The hot section (111) of the superconducting heat exchange tube (11) is located within the cooling section (100), and the cold section (112) of the superconducting heat exchange tube (11) is located outside the cooling section (100). Wherein, the heat exchange working medium within the superconducting heat exchange tube (11) can absorb heat and evaporate in the hot section (111) and rise to the cold section (112), and condense and release heat in the cold section (112) and flow back to the hot section (111) for reciprocating circulation; The superconducting heat exchange tube group (1) further includes a plurality of hot-side fins (12) sleeved on the hot section (111). The cross-section of the hot-side fins (12) in the vertical direction is parabolic, and the opening of the parabola faces the bottom of the cooling section (100).

2. The cooling device for the sintering furnace of the thermosuperconductive electrode material according to claim 1, wherein The superconducting heat exchange tube group (1) includes a first superconducting heat exchange tube group, and the first superconducting heat exchange tube group includes a plurality of first superconducting heat exchange tubes (1101) and a plurality of first hot-side fins (1201). A plurality of the first hot-side fins (1201) are sleeved on the hot section (111) of one of the first superconducting heat exchange tubes (1101); The superconducting heat exchange tube group (1) further includes a second superconducting heat exchange tube group, and the second superconducting heat exchange tube group includes a plurality of second superconducting heat exchange tubes (1102) and a plurality of second hot-side fins (1202). A plurality of the second hot-side fins (1202) are sleeved on the hot section (111) of one of the second superconducting heat exchange tubes (1102); The first hot-side fins (1201) are located above the second hot-side fins (1202) in the vertical direction, and the projections of the first hot-side fins (1201) and the second hot-side fins (1202) in the vertical direction jointly cover the materials within the cooling section (100).

3. The cooling device for the sintering furnace of the thermosuperconducting electrode material according to claim 2, characterized in that, The projections of the first hot-side fins (1201) and the second hot-side fins (1202) in the vertical direction are both circular.

4. The cooling device for a hot superconducting electrode material sintering furnace according to claim 3, characterized in that The first superconducting heat exchange tube (1101) passes through the center of the projection of the first hot-side fin (1201) in the vertical direction. The horizontal distance between adjacent two first superconducting heat exchange tubes (1101) is L1, and the diameter of the projection of the first hot-side fin (1201) in the vertical direction is D1, 30mm ≥ L1 - D1 ≥ 0mm; and / or, The second superconducting heat exchange tube (1102) passes through the center of the projection of the second hot-side fin (1202) in the vertical direction. The horizontal distance between adjacent two second superconducting heat exchange tubes (1102) is L2, and the diameter of the projection of the second hot-side fin (1202) in the vertical direction is D2, 30mm ≥ L2 - D2 ≥ 0mm.

5. The cooling device for the hot superconducting electrode material sintering furnace according to claim 1, characterized in that, The number of the hot-side fins (12) sleeved on the hot section (111) of a single superconducting heat exchange tube (11) is N, 10 ≥ N ≥ 5; The vertical distance between adjacent two hot-side fins (12) is H3, and H3 ≥ 10mm.

6. The cooling device for a hot superconducting electrode material sintering furnace according to claim 1, wherein When the thermal radiation of the material in the cooling section (100) reaches the hot-side fins (12) in the vertical direction and is reflected onto the superconducting heat exchange tube (11), it converges into a focal point P. The distance between the focal point P and the end of the hot section (111) facing away from the cold section (112) is H2, and H2 ≥ 50 mm.

7. The cooling device for the sintering furnace of the thermosuperconductive electrode material according to claim 1, wherein An endothermic coating is provided on the surface of the hot section (111); and / or, A heat-reflective coating is provided on the surface of the hot-side fins (12).

8. The cooling device for a sintering furnace of a thermal superconducting electrode material according to claim 1, characterized in that, The cooling device for a thermal superconducting electrode material sintering furnace further includes a mounting assembly (2). The mounting assembly (2) includes a first seal (21), a second seal (22), and a mounting member (23). The first seal (21) is in sealing contact with the outer wall of the cooling section (100), the second seal (22) is in sealing contact with the inner wall of the cooling section (100), and the mounting member (23) is sleeved on the cold section (112) and presses against one side of the first seal (21) facing away from the outer wall of the cooling section (100).

9. The cooling device for a sintering furnace of a thermal superconducting electrode material according to claim 1, wherein At least one cold-side fin (13) is sleeved on one cold section (112).

10. Sintering furnace, characterized in that, It includes a cooling section (100) and the cooling device for a thermal superconducting electrode material sintering furnace according to any one of claims 1 to 9, and the cooling device for a thermal superconducting electrode material sintering furnace is provided in the cooling section (100).

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