Graphite electrode cooling device

Abstract

The utility model belongs to the technical field of graphitization furnaces, and particularly relates to a graphite electrode cooling device which comprises a graphite electrode and a cooling device, the cooling device is connected to two ends of the graphite electrode, the cooling device comprises at least two groups of cooling box assemblies and a cooling pipe, and the cooling box assemblies are respectively arranged at two ends of the graphite electrode. The graphite electrodes comprise the graphite electrode I and the graphite electrode II, each cooling box assembly comprises a water collecting tank and a water outlet tank, the water collecting tank in one cooling box assembly is arranged at one end of the graphite electrode I, and the water outlet tank in one cooling box assembly is arranged at one end of the graphite electrode II. The water collecting tank in the other cooling tank assembly is arranged at one end of the graphite electrode II, the water outlet tank is arranged at one end of the graphite electrode I. The water collecting tank and the water outlet tank are connected in series in a crossed mode through the cooling pipe, and the circulation time and the circulation length of cooling liquid in an overall channel are prolonged. And safety accidents caused by excessive expansion and bursting of the cooling pipe due to high temperature are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of graphitization furnaces, and particularly relates to a graphite electrode cooling device. Background Art

[0002] During the production process of a graphitization furnace, especially in the production of an internal series graphitization furnace, the graphite electrodes at the furnace head and furnace tail are important components of the furnace. They are the conductors of the graphitization furnace and need to transfer high-density current. As a result, a large amount of heat will be generated during the power-on process. Coupled with the good heat conductivity of the graphite electrodes themselves, the high temperature inside the furnace will also be transferred to the outside of the unprotected graphitization furnace through the graphite electrodes. To avoid damage to the electrodes caused by high-temperature oxidation of the external graphite electrodes, it is necessary to cool down the graphite electrodes.

[0003] The existing technology is to parallelly arrange a water collecting tank and a water discharging tank at both ends of the graphite electrode, and introduce liquid through the inside of the graphite electrode from the water collecting tank to cool the graphite electrode. This method can effectively reduce the temperature of the graphite electrode. However, due to the high temperature inside the graphite electrode and the short length of the cooling pipe, the coolant will expand inside the cooling pipe, causing the cooling pipe to rupture, and further resulting in a greater safety accident. At the same time, the cooling device in the existing technology is often an integrated design. When a certain part fails, the whole machine needs to be shut down for maintenance, which is very inconvenient. Summary of the Utility Model

[0004] Aiming at the technical problems existing in the background art, the purpose of the utility model is to provide a graphite electrode cooling device, which is convenient for cooling the graphite electrodes.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A graphite electrode cooling device includes a graphite electrode and a cooling device. The cooling device is connected to both ends of the graphite electrode. The cooling device includes a cooling tank assembly and a cooling pipe. There are at least two groups of cooling tank assemblies, which are respectively arranged at both ends of the graphite electrode. There are at least two groups of graphite electrodes, namely graphite electrode I and graphite electrode II. The cooling tank assembly includes a water collecting tank and a water discharging tank. The water collecting tank in one group of cooling tank assemblies is arranged at one end of graphite electrode I, and the water discharging tank is arranged at one end of graphite electrode II. The water collecting tank in the other group of cooling tank assemblies is arranged at one end of graphite electrode II, and the water discharging tank is arranged at one end of graphite electrode I. The water collecting tank and the water discharging tank are connected in series through a cooling pipe.

[0007] Preferably, the cooling tank assemblies are respectively a cooling tank assembly I and a cooling tank assembly II. The cooling tank assembly I includes a water collecting tank I and a water discharging tank I. The cooling tank assembly II includes a water collecting tank II and a water discharging tank II. The cooling tank assembly I and the cooling tank assembly II are respectively arranged at both ends of the graphite electrode.

[0008] Preferably, the water collecting tank I is arranged at one end of the graphite electrode I, the water outlet tank I is arranged at the other end of the graphite electrode I, the water collecting tank II is arranged at one end of the graphite electrode II, and the water outlet tank II is arranged at the other end of the graphite electrode II.

[0009] Preferably, the water collecting tank I, the water outlet tank I, the water collecting tank II and the water outlet tank II have the same structure, and each includes a box body. An exhaust pipe is arranged at the upper end of the box body, a sludge discharge pipe is arranged at the lower end, a plurality of ball valves are arranged on one side of the box body, and a pipeline is arranged on the other side.

[0010] Preferably, a plurality of copper pipes are respectively arranged inside the graphite electrode I and the graphite electrode II. One end of the cooling pipe is connected to the ball valve, and the other end is connected to the copper pipe.

[0011] Preferably, the cooling device further includes a total water inlet pipe and a total water outlet pipe. The pipeline of the water collecting tank I is connected to the total water inlet pipe, the pipeline of the water collecting tank II is connected to the total water inlet pipe, the pipeline of the water outlet tank I is connected to the total water outlet pipe, and the pipeline of the water outlet tank II is connected to the total water outlet pipe.

[0012] Preferably, a stop component is arranged on the pipeline.

[0013] Preferably, an emergency pipe is arranged on the total water inlet pipe.

[0014] The utility model has the following advantages and beneficial effects:

[0015] First, in the utility model, the cooling devices at both ends of the graphite electrode I and the graphite electrode II are connected in a cross manner, which prolongs the circulation time and length of the coolant in the overall passage, preventing the cooling pipe from over-expanding due to high temperature when the coolant enters the graphite electrode, and further preventing the cooling pipe from bursting and causing safety accidents.

[0016] Second, in the utility model, only the coolant needs to be introduced into the total water inlet pipe. The coolant enters the graphite electrode for cooling work and finally flows out from the total water outlet pipe. A plurality of stop components are arranged in the cooling device, which can adjust the circulation of the coolant at each point and reduce the risk of accidents.

[0017] Third, in the utility model, the structure is simple, the operation is convenient, and it is convenient to cool the graphite electrode. Description of the Drawings

[0018] Figure 1 is a connection schematic diagram of a graphite electrode cooling device provided by the utility model;

[0019] Figure 2 is a schematic diagram of the box body structure of a graphite electrode cooling device provided by the utility model;

[0020] Icons: 1 - Graphite electrode I, 101 - Copper pipe, 2 - Graphite electrode II, 3 - Water collecting tank I, 31 - Box body, 32 - Exhaust pipe, 33 - Sludge discharge pipe, 34 - Ball valve, 35 - Pipe, 36 - Cooling pipe, 4 - Water outlet tank I, 5 - Water outlet tank II, 6 - Water collecting tank II, 7 - Valve body, 8 - Total water inlet pipe, 81 - Emergency pipe, 9 - Total water outlet pipe. Detailed implementation mode

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0023] Embodiment

[0024] As Figure 1 、 Figure 2 shown, a graphite electrode cooling device includes a graphite electrode and a cooling device. The cooling device is connected to both ends of the graphite electrode. The cooling device includes a cooling tank assembly and a cooling pipe 36. There are at least two groups of cooling tank assemblies, which are respectively arranged at both ends of the graphite electrode. There are at least two groups of graphite electrodes, namely graphite electrode I 1 and graphite electrode II 2. The cooling tank assembly includes a water collecting tank and a water outlet tank. The water collecting tank of one group of cooling tank assemblies is arranged at one end of the graphite electrode I 1, and the water outlet tank is arranged at one end of the graphite electrode II 2. The water collecting tank in the other group of cooling tank assemblies is arranged at one end of the graphite electrode II 2, and the water outlet tank is arranged at one end of the graphite electrode I 1. The water collecting tank and the water outlet tank are connected in series through the cooling pipe 36.

[0025] As Figure 1-2As shown, the cooling tank assemblies are respectively the cooling tank assembly I and the cooling tank assembly II. The cooling tank assembly I includes the water collecting tank I 3 and the water discharging tank I 4, and the cooling tank assembly II includes the water discharging tank II 5 and the water collecting tank II 6. The cooling tank assembly I and the cooling tank assembly II are respectively arranged at both ends of the graphite electrode. The water collecting tank I 3 is arranged at one end of the graphite electrode I 1, the water discharging tank I 4 is arranged at the other end of the graphite electrode II 2, the water discharging tank II 5 is arranged at one end of the graphite electrode I 1, and the water collecting tank II 6 is arranged at the other end of the graphite electrode II 2. The water collecting tank I 3, the graphite electrode II 2, and the water discharging tank II 5 are connected, and the water collecting tank II 6, the graphite electrode I 1, and the water discharging tank I 4 are connected. The three are connected in a longer path. When a situation occurs during the cooling process resulting in a broken chain, the movement time of the coolant in the path of the cooling passage is extended, and the worker can make timely handling when learning about the occurrence of the accident, thus extending the emergency time for dangerous situations.

[0026] As Figure 1-2 shown, the water collecting tank I 3, the water discharging tank I 4, the water discharging tank II 5, and the water collecting tank II 6 have the same structure, and all include a box body 31. An exhaust pipe 32 is arranged at the upper end of the box body 31, a sludge discharging pipe 33 is arranged at the lower end, several ball valves 34 are arranged on one side of the box body 31, and a pipeline 35 is arranged on the other side. In the water collecting tank I 3 and the water collecting tank II 6, the coolant enters the respective box bodies 31 from the pipeline 35. In the water discharging tank I 4 and the water discharging tank II 5, the coolant flows out of the box bodies 31 through the pipeline 35. Since the temperature is relatively high when the graphite electrode is working, the coolant inside the box body 31 will expand. Therefore, the exhaust pipe 32 for exhausting gas is provided to prevent the expansion of the coolant inside the box body 31 from affecting the structure of the box body 31. At the same time, some coolant will remain in the box body 31 after the cooling is stopped. Therefore, the sludge discharging pipe 33 is designed, and by opening the sludge discharging pipe 33, the residual coolant inside the box body 31 can be discharged. A number of copper pipes 101 are respectively arranged inside the graphite electrode I 1 and the graphite electrode II 2. One end of the cooling pipe 36 is connected to the ball valve 34, and the other end is connected to the copper pipe 101. With such a design, the copper pipes 101 are arranged inside the graphite electrode and are not easily damaged. If the corresponding cooling pipe 36 is damaged by rupture and leakage, the corresponding ball valve 34 can be closed, and the damaged cooling pipe 36 can be replaced online without affecting the cooling of other positions.

[0027] As Figure 1-2As shown in the figure, the cooling device further includes a main inlet pipe 8 and a main outlet pipe 9. The pipe 35 of the water collecting tank I 3 is connected to the main inlet pipe 8, the pipe 35 of the water outlet tank II 5 is connected to the main outlet pipe 9, the pipe 35 of the water outlet tank I 4 is connected to the main outlet pipe 9, and the pipe 35 of the water collecting tank II 6 is connected to the main inlet pipe 8. The coolant directly enters the cooling device from the main inlet pipe 8 and flows out from the main outlet pipe 9 after cooling. The main inlet pipe 8 and the main outlet pipe 9 separate each group of components, making it convenient for workers to understand the flow situation of the coolant during inspection and reducing the working intensity of the workers. A cut-off component is provided on the pipe 35, and the cut-off component is a valve body 7. When a problem occurs in the connection of a certain part of the box body 31, the flow rate of the coolant can be controlled by controlling the valve body 7. An emergency pipe 81 is provided on the main inlet pipe 8. When a problem occurs in the connection between the coolant device and the head end of the main inlet pipe 8, it can be directly connected to the emergency pipe 81, and cooling water can be introduced at the emergency pipe 81 to avoid the shutdown of the whole device.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A graphite electrode cooling device, comprising a graphite electrode and a cooling device, wherein the cooling device is connected to both ends of the graphite electrode, characterized in that: The cooling device includes a cooling box assembly and a cooling pipe. The cooling box assembly has at least two groups and is respectively arranged at the two ends of the graphite electrode. The graphite electrode has at least two groups, namely graphite electrode I and graphite electrode II. The cooling box assembly includes a water collecting box and a water outlet box. The water collecting box of one group of cooling box assemblies is arranged at one end of graphite electrode I, and the water outlet box is arranged at one end of graphite electrode II. The water collecting box in the other group of cooling box assemblies is arranged at one end of graphite electrode II, and the water outlet box is arranged at one end of graphite electrode I. The water collecting box at one end of graphite electrode I is connected to the water outlet box at one end of graphite electrode II, and the water collecting box at one end of graphite electrode II is connected to the water outlet box at one end of graphite electrode I.

2. A graphite electrode cooling device according to claim 1, characterized in that: The cooling box components are cooling box component I and cooling box component II respectively. The cooling box component I includes a water collecting box I and a water outlet box I, and the cooling box component II includes a water collecting box II and a water outlet box II. The cooling box component I and cooling box component II are respectively arranged at both ends of the graphite electrode.

3. A graphite electrode cooling device according to claim 2, characterized in that: The water collecting tank I is arranged at one end of the graphite electrode I, the water outlet tank I is arranged at the other end of the graphite electrode I, the water collecting tank II is arranged at one end of the graphite electrode II, and the water outlet tank II is arranged at the other end of the graphite electrode II.

4. A graphite electrode cooling device according to claim 2, characterized in that: The water collecting box I, water outlet box I, water collecting box II and water outlet box II have the same structure and all include a box body, an exhaust pipe is arranged at the upper end of the box body, a silt discharge pipe is arranged at the lower end, a plurality of ball valves are arranged on one side of the box body, and a pipeline is arranged on the other side.

5. A graphite electrode cooling device according to claim 4, characterized in that: A plurality of copper tubes are respectively arranged inside the graphite electrode I and the graphite electrode II. One end of the cooling tube is connected to the ball valve, and the other end is connected to the copper tube.

6. A graphite electrode cooling device according to claim 4, characterized in that: The cooling device also includes a water inlet main pipe and a water outlet main pipe. The pipe of the water collecting tank I is connected to the water inlet main pipe, the pipe of the water collecting tank II is connected to the water inlet main pipe, the pipe of the water outlet tank I is connected to the water outlet main pipe, and the pipe of the water outlet tank II is connected to the water outlet main pipe.

7. A graphite electrode cooling device according to claim 4, characterized in that: A cut-off component is arranged on the pipeline.

8. A graphite electrode cooling device according to claim 6, characterized in that: An emergency pipe is arranged on the water inlet main pipe.

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