High temperature furnace heating electrode structure

Abstract

The utility model relates to a high temperature stove heating electrode structure solves the problem that the heating electrode reliability of existing high temperature stove graphite cavity is low. Including graphite connecting column and insulating ring, electrode structure still includes first cooling device and second cooling device, first cooling device includes water cooling jacket and heat preservation layer, second cooling device includes copper connecting cooling cavity, the outside of cold end of high temperature stove heating electrode structure is equipped with first cooling device, and the inside is equipped with second cooling device and carries out cooling to cold end portion to reduce the temperature of cold end, prevents the temperature of wiring electrode and influences the conductivity and is too high, in addition, the clearance is equipped with between copper connecting cooling cavity and water cooling jacket, and copper connecting cooling cavity and water cooling jacket are equipped with the insulating spacer sleeve for insulating high temperature stove and copper connecting cooling cavity, and the clearance is isolated into insulating cavity by insulating spacer sleeve to insulate air, copper connecting cooling cavity is isolated from high temperature stove shell simultaneously, thereby improved the reliability of high temperature stove heating electrode structure.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical machinery and equipment engineering, specifically to a high-temperature furnace heating electrode structure. Background Technology

[0002] For heating the graphite cavity of a high-temperature furnace, strict control of the oxygen content within the furnace is necessary. Increased oxygen content rapidly accelerates the oxidation of the graphite cavity at high temperatures. Furthermore, the maximum heating temperature of the graphite cavity can reach 1600℃, requiring high-current heating, and the furnace shell structure is made of carbon steel. Therefore, reliable conductive connection, insulation, cooling, and sealing of the heating electrodes extending from the furnace are critical issues that need to be addressed. Existing heating electrodes for high-temperature furnace graphite cavities typically use a structure where the graphite electrode is fitted with an insulating sleeve. Because the required temperature at the electrode terminals is low, while the high temperature inside the furnace results in relatively high electrode temperatures, the terminals are prone to overheating and damage, affecting the stability of the electrodes. Utility Model Content

[0003] The purpose of this invention is to solve the problem of low reliability of heating electrodes in existing high-temperature furnace graphite cavities.

[0004] The technical solution adopted to solve the technical problem proposed by this utility model is as follows: The heating electrode structure of the high-temperature furnace for feeding of this utility model includes a graphite connecting column and an insulating ring sleeved on the outside of the graphite connecting column. The electrode structure also includes a first cooling device and a second cooling device. The first cooling device includes a water-cooled jacket fixedly connected to the shell of the high-temperature furnace and a heat insulation layer. The water-cooled jacket is a hollow cavity structure. The water-cooled jacket is provided with a first coolant inlet and a first coolant outlet. The middle part of the water-cooled jacket is provided with a graphite connecting column mounting hole. The heat insulation layer sleeves... On the insulating ring, the heat insulation layer is located inside the mounting hole of the graphite connecting column. The second cooling device includes a copper connecting cooling cavity, which is inserted into the graphite connecting column. There is a gap between the copper connecting cooling cavity and the water-cooled jacket. An insulating sleeve is provided outside the copper connecting cooling cavity and the water-cooled jacket to insulate the high-temperature furnace from the copper connecting cooling cavity. The insulating sleeve also isolates the gap into an insulating cavity. The copper connecting cooling cavity is provided with a second coolant inlet and a second coolant outlet. A wiring electrode is provided on the wall of the copper connecting cooling cavity.

[0005] The technical solutions that further define this utility model include: The copper connection cooling cavity includes a barrel-shaped copper connection cavity body and a copper connection cover plate. The copper connection cavity body and the copper connection cover plate are sealed together, and a copper connection cooling cavity flow channel is formed between the copper connection cavity body and the copper connection cover plate. The second coolant inlet and the second coolant outlet are located on the copper connection cover plate. The copper connection cavity body is inserted into the graphite connection column.

[0006] The copper connecting cavity has a threaded post on its outer periphery, and the graphite connecting post has a threaded hole that mates with the threaded post.

[0007] The liquid guide pipe is connected to the second coolant inlet, and the outlet of the liquid guide pipe is located at the bottom of the copper connecting cavity.

[0008] The copper connecting cover plate is provided with a wire electrode connecting thread hole, and the wire electrode is provided with a wire electrode connecting thread post that mates with the wire electrode connecting thread hole.

[0009] Both the threaded hole for connecting the electrode and the threaded post for connecting the electrode are coated with copper powder conductive adhesive.

[0010] The copper connecting cover plate has a copper busbar interface on its side wall.

[0011] The copper connecting cavity is provided with a first flange, and the copper connecting cover is provided with a second flange. The first flange and the second flange are sealed together by a sealing ring.

[0012] The insulating spacer is a flexible ring. One end of the insulating spacer is fitted onto the first flange. The insulating spacer is provided with a first clamp for pressing the insulating spacer and the first flange together. The other end of the insulating spacer is fitted onto the outer circumference of the water-cooling jacket. The outer circumference of the water-cooling jacket is provided with a spacer connecting post that mates with the insulating spacer. The insulating spacer is provided with a second clamp for pressing the insulating spacer and the spacer connecting post together.

[0013] A graphite soft felt isolation sleeve is provided between the insulating ring and the graphite connecting post.

[0014] Through the above technical solution, the beneficial effects of this utility model are as follows: The cold end of the high-temperature furnace heating electrode structure of this utility model is provided with a first cooling device on the outside and a second cooling device on the inside to cool the cold end part, thereby reducing the temperature of the cold end and preventing the wire electrode temperature from being too high and affecting the conductivity. In addition, there is a gap between the copper connection cooling cavity and the water cooling jacket. An insulating sleeve is provided outside the copper connection cooling cavity and the water cooling jacket to insulate the high-temperature furnace from the copper connection cooling cavity. The insulating sleeve isolates the gap into an insulating cavity, thereby isolating the air and isolating the copper connection cooling cavity from the high-temperature furnace shell, thereby improving the reliability of the high-temperature furnace heating electrode structure. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a high-temperature furnace heating electrode structure according to the present invention.

[0016] Figure 2 This is a cross-sectional schematic diagram of a high-temperature furnace heating electrode structure according to the present invention.

[0017] Figure 3 This is an exploded structural diagram of a high-temperature furnace heating electrode structure according to the present invention.

[0018] The components include: graphite connecting post 10, graphite connecting post threaded hole 11, insulating ring 20, first cooling device 30, water cooling jacket 31, first coolant inlet 311, first coolant outlet 312, graphite connecting post mounting hole 313, insulation layer 32, graphite soft felt isolation sleeve 33, second cooling device 40, copper connecting cooling cavity 41, second coolant inlet 411, second coolant outlet 412, copper connecting cavity 413, copper connecting threaded post 4131, first flange 4132, copper connecting cover plate 414, wiring electrode connecting threaded hole 4141, copper busbar interface 4142, second flange 4143, liquid guide pipe 415, sealing ring 416, gap 50, insulating sleeve 60, wiring electrode 70, wiring electrode connecting threaded post 71, first clamp 80, second clamp 90. Detailed Implementation

[0019] The structure of this utility model will be further described below with reference to the accompanying drawings.

[0020] Reference Figures 1 to 3 A high-temperature furnace heating electrode structure includes a graphite connecting post 10 and an insulating ring 20 fitted over the graphite connecting post 10. The electrode structure also includes a first cooling device 30 and a second cooling device 40. The first cooling device 30 includes a water-cooled jacket 31 fixedly connected to the high-temperature furnace shell and a heat insulation layer 32. The water-cooled jacket 31 is a hollow cavity structure. The water-cooled jacket is a carbon steel structure welded to the high-temperature furnace shell. The water-cooled jacket 31 is provided with a first coolant inlet 311 and a first coolant outlet 312. The middle part of the water-cooled jacket 31 is provided with a graphite connecting post mounting hole 313. The heat insulation layer 32 is fitted over the insulating ring 20 and is located inside the graphite connecting post mounting hole 313. In this embodiment, a graphite soft felt isolation sleeve 33 is provided between the insulating ring and the graphite connecting post. The graphite soft felt isolation sleeve fitted over the graphite connecting post plays a role in heat insulation. The water-cooled jacket injects coolant through the first coolant inlet 311 and extracts coolant through the first coolant outlet 312, thereby circulating and cooling the outer side of the cold end of the graphite connecting post. The second cooling device 40 includes a copper connecting cooling cavity 41, which is inserted into the graphite connecting post 10. In this embodiment, the outer periphery of the copper connecting cavity 413 is provided with a copper connecting threaded post 4131, and the graphite connecting post 10 is provided with a graphite connecting post threaded hole 11 that mates with the threaded post 4131. The copper connecting cavity 413 is detachably connected to the graphite connecting post threaded hole 11 through the copper connecting threaded post 4131, which increases the conductive contact area, reduces heat generation, and makes the threaded connection more reliable and convenient for disassembly and maintenance.

[0021] A gap 50 is provided between the copper connecting cooling cavity 41 and the water-cooled jacket 31. An insulating sleeve 60 is provided outside the copper connecting cooling cavity 41 and the water-cooled jacket 31 to insulate the high-temperature furnace from the copper connecting cooling cavity 41. The insulating sleeve 60 also isolates the gap 50 into an insulating cavity. The copper connecting cooling cavity 41 is provided with a second coolant inlet 411 and a second coolant outlet 412. A wiring electrode 70 is provided on the wall of the copper connecting cooling cavity 41. In this embodiment, the copper connecting cooling cavity 41 includes a barrel-shaped copper connecting cavity body 413 and a copper connecting cover plate 414. The copper connecting cavity body 413 and the copper connecting cover plate 414 are sealed together. In this embodiment, the copper connecting cavity body 413 is provided with a first flange 4132, and the copper connecting cover plate 414 is provided with a second flange 4143. The first flange 4132 and the second flange 4143 are sealed together by a sealing ring 416. The first flange 4132 and the second flange 4143 are tightened with screws to press the sealing ring 416 together, achieving a sealed connection. A copper connection cooling cavity 411 flow channel is formed between the copper connection cavity 413 and the copper connection cover plate 414. The second coolant inlet 411 and the second coolant outlet 412 are located on the copper connection cover plate 414. The copper connection cavity 413 is inserted into the graphite connecting column 10. In this embodiment, a guide pipe 415 is connected to the second coolant inlet 411, and the outlet of the guide pipe 415 is located at the bottom of the copper connection cavity 413. Thus, when the coolant enters from the second coolant inlet 411, the coolant enters the bottom of the copper connection cavity, and then flows out from the second coolant outlet 412 on the copper connection cover plate 414, thereby circulating and cooling the inner side of the cold end of the graphite connecting column. The external first cooling device 30 works in conjunction with the internal second cooling device 40 to cool the cold end of the graphite connecting column, thereby reducing the temperature of the cold end and preventing the wiring electrode 70 from overheating and affecting its conductivity. In this embodiment, the copper connecting cover plate 414 is provided with a wire electrode connecting threaded hole 4141, and the wire electrode 70 is provided with a wire electrode connecting threaded post 71 that mates with the wire electrode connecting threaded hole 4141. The wire electrode 70 and the copper connecting cover plate 414 are connected through the wire electrode connecting threaded post 71, thereby facilitating installation. In this embodiment, both the wire electrode connecting threaded hole 4141 and the wire electrode connecting threaded post 71 are coated with copper powder conductive adhesive, thereby ensuring reliable conductivity. In this embodiment, the side wall of the copper connecting cover plate 414 is provided with a copper busbar interface 4142 for convenient connection of copper busbars.

[0022] In this embodiment, the insulating spacer 60 is a flexible annular shape. One end of the insulating spacer 60 is fitted onto the first flange 4132, and the insulating spacer 60 is provided with a first clamp 80 for pressing the insulating spacer 60 and the first flange 4132 together. The other end of the insulating spacer 60 is fitted onto the outer periphery of the water-cooling jacket 31, and the outer periphery of the water-cooling jacket 31 is provided with a spacer connecting post that mates with the insulating spacer 60. The insulating spacer 60 is provided with a second clamp 90 for pressing the insulating spacer 60 and the spacer connecting post together. The insulating spacer 60 seals the gap between the copper connecting cavity 413 and the copper connecting cooling cavity into an insulating cavity, thereby isolating air and isolating the copper connecting cooling cavity 41 from the high-temperature furnace shell, thereby improving the reliability of the high-temperature furnace heating electrode structure.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

Claims

1. A high-temperature furnace heating electrode structure, comprising a graphite connecting post and an insulating ring sleeved around the graphite connecting post, characterized in that: The electrode structure further includes a first cooling device and a second cooling device. The first cooling device includes a water-cooled jacket fixedly connected to the high-temperature furnace shell and an insulation layer. The water-cooled jacket is a hollow cavity structure with a first coolant inlet and a first coolant outlet. A graphite connecting post mounting hole is provided in the middle of the water-cooled jacket. The insulation layer is fitted onto an insulating ring and is located inside the graphite connecting post mounting hole. The second cooling device includes a copper connecting cooling cavity inserted into the graphite connecting post. A gap is provided between the copper connecting cooling cavity and the water-cooled jacket. An insulating sleeve is provided outside the copper connecting cooling cavity and the water-cooled jacket to insulate the high-temperature furnace from the copper connecting cooling cavity. The insulating sleeve also isolates the gap into an insulating cavity. A second coolant inlet and a second coolant outlet are provided on the copper connecting cooling cavity. A wiring electrode is provided on the wall of the copper connecting cooling cavity.

2. The high-temperature furnace heating electrode structure as described in claim 1, characterized in that: The copper connection cooling cavity includes a barrel-shaped copper connection cavity body and a copper connection cover plate. The copper connection cavity body and the copper connection cover plate are sealed together, and a copper connection cooling cavity flow channel is formed between the copper connection cavity body and the copper connection cover plate. The second coolant inlet and the second coolant outlet are located on the copper connection cover plate. The copper connection cavity body is inserted into the graphite connection column.

3. The high-temperature furnace heating electrode structure as described in claim 2, characterized in that: The copper connecting cavity is provided with a copper connecting threaded post on its outer periphery, and the graphite connecting post is provided with a graphite connecting post threaded hole that mates with the copper connecting threaded post.

4. The high-temperature furnace heating electrode structure as described in claim 2, characterized in that: The liquid guide pipe is connected to the second coolant inlet, and the outlet of the liquid guide pipe is located at the bottom of the copper connecting cavity.

5. The high-temperature furnace heating electrode structure as described in claim 2, characterized in that: The copper connecting cover plate is provided with a wire electrode connecting thread hole, and the wire electrode is provided with a wire electrode connecting thread post that mates with the wire electrode connecting thread hole.

6. The high-temperature furnace heating electrode structure as described in claim 5, characterized in that: Both the threaded hole for connecting the electrode and the threaded post for connecting the electrode are coated with copper powder conductive adhesive.

7. The high-temperature furnace heating electrode structure as described in claim 2, characterized in that: The copper connecting cover plate has a copper busbar interface on its side wall.

8. The high-temperature furnace heating electrode structure as described in claim 2, characterized in that: The copper connecting cavity is provided with a first flange, and the copper connecting cover is provided with a second flange. The first flange and the second flange are sealed together by a sealing ring.

9. The high-temperature furnace heating electrode structure as described in claim 8, characterized in that: The insulating spacer is a flexible ring. One end of the insulating spacer is fitted onto the first flange. The insulating spacer is provided with a first clamp for pressing the insulating spacer and the first flange together. The other end of the insulating spacer is fitted onto the outer circumference of the water-cooling jacket. The outer circumference of the water-cooling jacket is provided with a spacer connecting post that mates with the insulating spacer. The insulating spacer is provided with a second clamp for pressing the insulating spacer and the spacer connecting post together.

10. The high-temperature furnace heating electrode structure as described in claim 1, characterized in that: A graphite soft felt isolation sleeve is provided between the insulating ring and the graphite connecting post.

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