Electrode protective sleeve
By designing the electrode protective sleeve, the cooling water flows in a maze-like manner using the cooling water cavity and partition structure, the soft break problem caused by the electrode due to temperature differences and weak points is solved, and the electrode temperature uniformity and stress capacity are improved, ensuring the stability and safety of the smelting process.
Patent Information
- Application Number
- CN202420949099.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-06
AI Technical Summary
During the non-ferrous metal smelting process, electrodes are prone to soft breakage accidents due to temperature differences and multiple weaknesses, resulting in production suspension losses and safety risks.
An electrode protective sleeve is designed, including an annular cooling water chamber between the outer shell and the inner shell, separated into a plurality of small chambers by transverse and longitudinal partitions of the cooling water chamber, in which the cooling water flows in a maze manner, reducing the electrode temperature, reducing temperature differences, and providing protection when the electrode is subjected to external forces.
By reducing the electrode temperature difference and increasing the cooling water flow time, the electrode soft break accident is effectively avoided, the electrode is subjected to force, and the stability and safety of the smelting process are ensured.
Smart Images
Figure CN222560661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of smelting in submerged arc furnaces, in particular to an electrode protection sleeve. Background Art
[0002] At present, the electric furnace electrodes used for non-ferrous metal smelting basically use graphite electrodes or electrode paste self-baking electrodes. Graphite electrodes are made of petroleum coke and asphalt as raw materials to make carbon rope electrodes, and then put into a graphitization resistance furnace at a temperature of 2000-2500℃ to make graphite electrodes through graphitization. Each graphite electrode is less than 4m long, and multiple electrodes need to be connected into one during use. Self-baking electrodes are made of anthracite, coke, asphalt and tar as raw materials. Electrode paste is made at a certain temperature, and then the electrode paste is loaded into the electrode shell installed on the electric furnace. During the production process of the electric furnace, it relies on the Joule heat generated by the passage of current and the heat conducted in the furnace to self-sinter and coke. This type of electrode can be used continuously, and it can be sintered and formed while being used, and can be baked into a large diameter. The role of the electrode in the smelting process is to extend into the molten pool of the electric furnace to conduct current and do work to melt the material. The overall length of the electrode is relatively long, and the end that extends into the molten pool of the electric furnace is affected by the high temperature and has a higher temperature, resulting in a large temperature difference between the two ends of the electrode. The temperature difference can easily cause the electrode to withstand external forces less effectively. At the same time, the electrode is made of multiple electrodes or electrode shells, and there are multiple weak points of force. This makes it easy for the electrode to be soft-broken at the end that extends into the electric furnace during the electrode pressing and releasing process due to the action of external forces. Electrode soft-break accidents can easily cause production stoppage losses and also pose huge safety risks. Utility Model Content
[0003] The utility model aims to provide an electrode protection sleeve, which can reduce the temperature difference of the electrode, protect the electrode and make the electrode less prone to soft break.
[0004] In order to achieve the above-mentioned utility model purpose, the electrode protection sleeve of the utility model adopts the following technical solutions:
[0005] An electrode protective sleeve comprises a protective sleeve body, wherein a hollow cavity adapted to the electrode is arranged inside the protective sleeve body, and one end of the electrode extending into the electric furnace is inserted into the hollow cavity; the protective sleeve body comprises an outer shell and an inner shell, and an annular cooling water cavity is formed between the outer shell and the inner shell, and the cooling water cavity is filled with cooling water; the cooling water cavity is provided with a plurality of transverse partitions along its height direction, and the plurality of transverse partitions are arranged at intervals, and the transverse partitions divide the cooling water cavity into a plurality of small chambers, and the transverse partitions are provided with flow ports, and two adjacent small chambers are connected through the flow ports; the cooling water cavity is provided with a longitudinal partition, and the longitudinal partition extends along the height direction of the cooling water cavity, and the longitudinal partition is perpendicular to the transverse partition, and the longitudinal partition passes through the plurality of transverse partitions, and one end of the longitudinal partition contacts the outer shell, and the other end of the longitudinal partition contacts the inner shell; the flow port is arranged on the left or right side of the longitudinal partition, and the flow port of the upper transverse partition and the flow port of the lower transverse partition are arranged staggered, and the upper flow port is located on the right side of the longitudinal partition, and the lower flow port is located on the left side of the longitudinal partition.
[0006] Preferably, the protective cover body is provided with a water inlet pipe and a drain pipe connected to the cooling water chamber, the water inlet of the water inlet pipe is located at the bottom of the lowest small chamber, the flow port of the lowest transverse partition is staggered with the water inlet, the flow port of the lowest transverse partition is located on the right side of the longitudinal partition, and the water inlet is located on the left side of the longitudinal partition; the drain outlet of the drain pipe is located at the top of the uppermost small chamber, the flow port of the uppermost transverse partition is located on the right side of the longitudinal partition, and the drain outlet is located on the left side of the longitudinal partition.
[0007] Preferably, a support base mounted on the furnace cover is provided at the upper end of the protective cover body.
[0008] Preferably, an insulating pad in contact with the furnace cover is provided at the bottom of the support seat. The insulating pad insulates the protective cover body from the furnace cover, preventing the electrode current from being transmitted to the furnace cover, thereby increasing safety.
[0009] Preferably, the length of the protective cover body is one sixth of the total length of the electrode. The protective cover body is at most one sixth of the total length of the electrode, and is completely installed at one end of the electrode extending into the electric furnace. The inner diameter of the protective cover body matches the outer diameter of the electrode, and can play a protective role when the electrode is subjected to external force.
[0010] Preferably, the water inlet pipe is provided with a water inlet valve, and the water inlet pipe is located at the water inlet and the drain pipe is located at the drain. The temperature sensor is interlocked with the water inlet valve, and the temperature sensor sends the detected signal to the controller, and the controller controls the opening of the water inlet valve. The temperature sensor is interlocked with the water inlet valve to accurately control the temperature and achieve the best cooling effect.
[0011] Preferably, the support base is provided with a bolt hole, and the fastener passes through the bolt hole to fix the support base on the furnace cover. The fastener passes through the bolt hole to fix the support base on the furnace cover, thereby facilitating the removal and installation of the protective cover body on the furnace cover.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] 1. The utility model sets a cooling water cavity between the outer shell and the inner shell of the protective cover body, reduces the electrode temperature by water cooling, reduces the temperature difference between the end of the electrode extending into the electric furnace and the outer end, avoids the uneven force bearing capacity of the electrode itself, and makes it difficult for the electrode to have a soft break accident. At the same time, through the setting of the protective cover body, it can play a protective role when the electrode is subjected to external force, thereby further avoiding the soft break phenomenon of the electrode. The structure is simple, the design is reasonable, and it is practical.
[0014] 2. The utility model provides transverse and longitudinal partitions so that the cooling water flows in a labyrinthine manner in the cooling water chamber, which not only avoids the short circuit of the cooling water, but also increases the flow time of the cooling water, further improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2 for Figure 1 sectional view of
[0017] Figure 3 for Figure 1 Top view of the .
[0018] Among them, 1 is a water inlet pipe, 1a is a water inlet, 2 is a drain pipe, 2a is a drain outlet, 3 is a support seat, 3a is a bolt hole, 4 is an insulating pad, 5 is a protective cover body, 6 is a hollow cavity, 7 is a longitudinal partition, 8 is a transverse partition, 9 is a flow port, 10 is a cooling water cavity, 10a is a small chamber, 11 is an outer shell, and 12 is an inner shell. DETAILED DESCRIPTION
[0019] The present invention is further explained below in conjunction with specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.
[0020] like Figure 1-3As shown, an electrode protective cover comprises a protective cover body 5, wherein the upper end of the protective cover body 5 is provided with a support seat 3 mounted on the furnace cover, the support seat 3 is provided with a bolt hole 3a, and the fastener passes through the bolt hole 3a to fix the support seat 3 on the furnace cover; the bottom of the support seat 3 is provided with an insulating pad 4 contacting the furnace cover; the interior of the protective cover body 5 is provided with a hollow cavity 6 adapted to the electrode, and one end of the electrode extending into the electric furnace is inserted into the hollow cavity 6, and the length of the protective cover body 5 is one sixth of the total length of the electrode; the protective cover body 5 comprises an outer shell 11 and an inner shell 12, and a space is formed between the outer shell 11 and the inner shell 12. The cooling water chamber 10 is annular and filled with cooling water. The cooling water chamber 10 is provided with a plurality of transverse partitions 8 along its height direction. The plurality of transverse partitions 8 are arranged at intervals. The transverse partitions 8 divide the cooling water chamber 10 into a plurality of small chambers 10a. The transverse partitions 8 are provided with flow ports 9. Two adjacent small chambers 10a are connected through the flow ports 9. The cooling water chamber 10 is provided with a longitudinal partition 7. The longitudinal partition extends along the height direction of the cooling water chamber. The longitudinal partition 7 is perpendicular to the transverse partition 8. The longitudinal partition 7 penetrates the plurality of transverse partitions 8. One end of the longitudinal partition 7 is connected to the outer shell 11. The other end of the longitudinal partition 7 is in contact with the inner shell 12; the flow port 9 is arranged on the left or right side of the longitudinal partition 7, the flow port 9 of the upper transverse partition 8 and the flow port 9 of the lower transverse partition 8 are staggered, the upper flow port 9 is located on the right side of the longitudinal partition 7, and the lower flow port 9 is located on the left side of the longitudinal partition 7; the protective cover body 5 is provided with an inlet pipe 1 and a drain pipe 2 connected to the cooling water chamber 10, the water inlet 1a of the water inlet pipe 1 is located at the bottom of the lowest small chamber 10a, the flow port 9 of the lowest transverse partition 8 is staggered with the water inlet 1a, and the lowest transverse partition 8 is staggered. The flow port 9 is located on the right side of the longitudinal partition 7, and the water inlet 1a is located on the left side of the longitudinal partition 7; the drain outlet 2a of the drain pipe 2 is located at the top of the uppermost small chamber 10a, the flow port 9 of the uppermost transverse partition 8 is located on the right side of the longitudinal partition 7, and the drain outlet 2a is located on the left side of the longitudinal partition 7; the water inlet pipe 1 is provided with an inlet valve, and the water inlet pipe 1 is located at the water inlet 1a and the drain pipe 2 is located at the drain outlet 2a. The temperature sensor is interlocked with the water inlet valve, and the temperature sensor sends the detected signal to the controller, and the controller controls the size of the opening of the water inlet valve.
[0021] The specific working process and principle of the utility model are as follows: when in use, cooling water enters the cooling water chamber 10 from the water inlet pipe 1. Due to the effect of the transverse partition 8, the cooling water chamber 10 is divided into multiple small chambers 10a. The water inlet 1a of the water inlet pipe 1 directly extends into the bottom of the lowest small chamber 10a. At this time, due to the setting of the flow port 9, the two upper and lower adjacent small chambers 10a are connected, and the flow port 9 of the upper small chamber 10a and the flow port 9 of the lower small chamber 10a are staggered. The upper flow port 9 is located on the right side of the longitudinal partition 7, and the adjacent lower flow port 9 is located on the left side of the longitudinal partition 7. Therefore, the cooling water flows in the cooling water chamber 10 in a labyrinthine manner, thereby realizing heat exchange cooling, which not only avoids the situation of cooling water short circuit, but also increases Flow time of cooling water; specifically, the cooling water enters from the bottom small chamber 10a, flows around the small chamber 10a in a circle, enters the upper small chamber 10a from the circulation port 9, flows around in the opposite direction in a circle, continues to enter the upper small chamber 10a through the circulation port 9, and finally enters the drain pipe 2 from the drain port 2a of the top small chamber 10a to be discharged. At this time, the cooling water flows the farthest distance and has the longest cooling time, achieving the best cooling effect; at the same time, the water inlet pipe 1 is located at the water inlet 1a and the drain pipe 2 is located at the drain port 2a. Temperature sensors are provided, and the temperature sensors send the detected signals to the controller. The controller controls the opening of the water inlet valve. If the temperature rises, the cooling water volume is automatically increased to ensure the cooling effect.
[0022] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0023] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.
[0024] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.
Claims
1. An electrode protective cover, characterized in that: The invention comprises a protective sleeve body, wherein a hollow cavity adapted to the electrode is arranged inside the protective sleeve body, and one end of the electrode extending into the electric furnace is inserted into the hollow cavity; the protective sleeve body comprises an outer shell and an inner shell, and an annular cooling water cavity is formed between the outer shell and the inner shell, and the cooling water cavity is filled with cooling water; the cooling water cavity is provided with a plurality of transverse partitions along its height direction, and the plurality of transverse partitions are arranged at intervals, and the transverse partitions divide the cooling water cavity into a plurality of small chambers, and the transverse partitions are provided with flow ports, and two adjacent small chambers are connected through the flow ports; the cooling water cavity is provided with a longitudinal partition, and the longitudinal partition extends along the height direction of the cooling water cavity, and the longitudinal partition is perpendicular to the transverse partition, and the longitudinal partition passes through the plurality of transverse partitions, and one end of the longitudinal partition contacts the outer shell, and the other end of the longitudinal partition contacts the inner shell; the flow port is arranged on the left or right side of the longitudinal partition, and the flow port of the upper transverse partition and the flow port of the lower transverse partition are arranged staggered, and the upper flow port is located on the right side of the longitudinal partition, and the lower flow port is located on the left side of the longitudinal partition.
2. The electrode protective cover according to claim 1, characterized in that: The protective cover body is provided with a water inlet pipe and a drain pipe connected to the cooling water chamber, the water inlet of the water inlet pipe is located at the bottom of the lowest small chamber, the flow port of the lowest horizontal partition is staggered with the water inlet, the flow port of the lowest horizontal partition is located on the right side of the longitudinal partition, and the water inlet is located on the left side of the longitudinal partition; the drain outlet of the drain pipe is located at the top of the uppermost small chamber, the flow port of the uppermost horizontal partition is located on the right side of the longitudinal partition, and the drain outlet is located on the left side of the longitudinal partition.
3. The electrode protection cover according to claim 1, characterized in that: The upper end of the protective cover body is provided with a supporting seat installed on the furnace cover.
4. The electrode protection cover according to claim 3, characterized in that: An insulating pad contacting the furnace cover is provided at the bottom of the support seat.
5. The electrode protection cover according to claim 1, characterized in that: The length of the protective cover body is one sixth of the total length of the electrode.
6. The electrode protection sleeve according to claim 2, characterized in that: The water inlet pipe is provided with a water inlet valve. The water inlet pipe is located at the water inlet and the drain pipe is located at the drain. The temperature sensor is interlocked with the water inlet valve. The temperature sensor sends the detected signal to the controller, and the controller controls the opening size of the water inlet valve.
7. The electrode protection sleeve according to claim 3, characterized in that: The support seat is provided with bolt holes, and the fasteners pass through the bolt holes to fix the support seat on the furnace cover.