Graphite electrode applied to electrical equipment

Abstract

The utility model relates to the technical field of graphite electrodes, in particular to a graphite electrode applied to electrical equipment, which comprises an electrode column, one end of the electrode column is provided with an end head, one end of the electrode column far away from the end head is provided with a matching groove, the end head of one group of the electrode column is in threaded connection with the matching groove of the other electrode column, and the end head of the other group of the electrode column is in threaded connection with the matching groove of the other electrode column. A circular groove is formed in the inner wall of one side of the matching groove, a center column is fixedly connected to the inner wall of one side of the circular groove, an inserting groove is formed in the end, the center column is matched with the inserting groove, a reinforcing assembly is arranged in the end, and the reinforcing assembly comprises grouting holes formed in the outer wall of the circumference of the electrode column. According to the utility model, the electrode columns can be quickly matched and assembled, and the joints of the electrode columns can be effectively reinforced after assembly, so that the condition that the joints of the electrode columns are broken due to excessive burning loss in the working process is avoided, and the electrode columns can stably work.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite electrodes, in particular to graphite electrodes applied to electrical equipment. Background Art

[0002] Graphite electrodes are mainly made of petroleum coke and needle coke as raw materials, and coal tar as a binder. They are made through calcination, batching, kneading, pressing, roasting, graphitization, and machining. They are conductors that release electrical energy in the form of an arc in an electric arc furnace to heat and melt the charge. According to their quality indicators, they can be divided into ordinary power graphite electrodes, high power graphite electrodes, and ultra-high power graphite electrodes.

[0003] During the use of graphite electrodes, in order to meet people's usage length, threaded ends and matching grooves are set at both ends of the graphite electrodes to facilitate people's quick docking. The current at the connection between the electrode and the joint of the electrode column is mainly passed into the electrode through the joint. At the same time, the current density at the thread of the joint hole increases. The maximum current density in this part is at the maximum point of the joint diameter. It is the weakest link in the current conduction and heat conduction in the electrode column. The contact surface temperature between the electrode and the joint increases. Because heat dissipation is not easy in the joint, and the thermal conductivity coefficient of the electrode and the joint is limited, a higher heat load is formed at the connection between the electrode and the joint than at other parts, which is very easy to cause local overheating, arcing, burning, falling off or even breaking in this part. Therefore, graphite electrodes used in electrical equipment are urgently needed to solve the above problems. Utility Model Content

[0004] Based on the deficiencies in the prior art mentioned in the above background technology, the utility model provides a graphite electrode for electrical equipment.

[0005] The utility model overcomes the above technical problems by adopting the following technical solutions, specifically:

[0006] A graphite electrode used in electrical equipment comprises an electrode column, one end of which is provided with a terminal, and an end of which is away from the terminal is provided with a matching groove, a group of the terminal of the electrode column is threadedly connected with the matching groove of another electrode column, a circular groove is provided on one inner wall of the matching groove, a center column is fixedly connected to one inner wall of the circular groove, a slot is provided inside the terminal, and the center column matches the slot;

[0007] A reinforcement component is arranged inside the end head.

[0008] As a further solution of the utility model: the reinforcement component includes a grouting hole opened on the circumferential outer wall of the electrode column, the circumferential inner wall of the matching groove is provided with a first flow channel, the first flow channel is connected to the grouting hole, and the circumferential inner wall of the matching groove and the circumferential outer wall of the end are both provided with a second flow channel.

[0009] As a further solution of the utility model: a first reinforcement groove is provided inside the end head;

[0010] The first reinforcement groove is communicated with the second flow channel.

[0011] As a further solution of the utility model: a third flow channel and a fourth flow channel are opened inside the end head, and the third flow channel and the fourth flow channel are both connected to the first reinforcement groove.

[0012] As a further solution of the utility model: a second reinforcement groove is provided inside the end head;

[0013] The second reinforcement groove is communicated with the third flow channel.

[0014] As a further solution of the utility model: a fifth flow channel is opened inside the end head, and the fifth flow channel is connected to the first reinforcement groove;

[0015] A through hole is provided inside the central column, and both ends of the through hole are connected to the fifth flow channel.

[0016] As a further solution of the utility model: the bottom inner wall of the circular groove is fixedly connected with a ring plate, the number of the ring plates is three groups, and the three groups of ring plates are arranged in pairs to form a filling groove.

[0017] After adopting the above structure, the utility model has the following advantages compared with the prior art: it can realize the rapid matching assembly between electrode columns, and at the same time, the connection of the electrode columns can be effectively reinforced after assembly, ensuring that the connection of the electrode columns will not be excessively burned and broken during operation, so that the electrode columns can work stably. Specifically, by providing a reinforcement component and a ring plate, after the staff fixes the two groups of electrode columns through the threads between the end heads and the matching grooves, the staff injects asphalt glue through the grouting holes, and then the asphalt glue will flow into the first flow channel, the second flow channel and the first reinforcement groove through the grouting holes. At this time, the asphalt glue flowing into the first reinforcement groove will fill the filling groove, the through hole and the second reinforcement groove through the third flow channel and the fourth flow channel. When the asphalt glue is filled, it is left to solidify, so that the connection of the two groups of electrode columns can be reinforced, and the first flow channel, the first reinforcement groove, the second reinforcement groove and the filling groove are distributed left and right, middle, and up and down at the electrode connection, so that the connection of the electrode columns can be reinforced more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the electrode column docking structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the cross-sectional planar structure of the electrode column of the utility model.

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Figure 4 It is a half-sectioned enlarged structural schematic diagram of the reinforcement component of the utility model.

[0022] Figure 5 It is a schematic diagram of the top view of the end of the electrode column of the utility model.

[0023] In the figure: 1. electrode column; 2. end; 3. matching groove; 4. center column; 5. grouting hole; 6. circular groove; 7. ring plate; 8. first flow channel; 9. second flow channel; 10. first reinforcement groove; 11. third flow channel; 12. second reinforcement groove; 13. fourth flow channel; 14. through hole; 15. fifth flow channel; 16. filling groove. DETAILED DESCRIPTION

[0024] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0027] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] See also Figure 1 to Figure 5In the embodiment of the utility model, the graphite electrode used for electrical equipment includes an electrode column 1, one end of the electrode column 1 is provided with a terminal 2, and the end of the electrode column 1 away from the terminal 2 is provided with a matching groove 3, the terminal 2 of one group of electrode columns 1 is threadedly connected with the matching groove 3 of another electrode column 1, a circular groove 6 is provided on the inner wall of one side of the matching groove 3, and a center column 4 is fixedly connected to the inner wall of one side of the circular groove 6, and a slot is provided inside the terminal 2, and the center column 4 matches the slot;

[0029] A reinforcement component is provided inside the end 2, which can realize the rapid matching assembly between the electrode columns 1. At the same time, the connection of the electrode column 1 can be effectively reinforced after assembly, ensuring that the connection of the electrode column 1 will not be excessively burned and broken during operation, so that the electrode column 1 can work stably.

[0030] Preferably, the reinforcement component includes a grouting hole 5 opened on the circumferential outer wall of the electrode column 1, a first flow channel 8 is opened on the circumferential inner wall of the matching groove 3, the first flow channel 8 is connected to the grouting hole 5, and a second flow channel 9 is opened on the circumferential inner wall of the matching groove 3 and the circumferential outer wall of the end 2.

[0031] Preferably, a first reinforcement groove 10 is provided inside the end 2;

[0032] The first reinforcement groove 10 is connected with the second flow channel 9. After the staff fixes the two groups of electrode columns 1 through the threads between the end 2 and the matching groove 3, the staff injects asphalt glue through the grouting hole 5. Then the asphalt glue flows into the first flow channel 8, the second flow channel 9 and the first reinforcement groove 10 through the grouting hole 5, ensuring that the connection of the electrode column 1 will not be excessively burned and broken during operation, so that the electrode column 1 can work stably.

[0033] Preferably, a third flow channel 11 and a fourth flow channel 13 are opened inside the end head 2 , and both the third flow channel 11 and the fourth flow channel 13 are connected to the first reinforcement groove 10 .

[0034] Preferably, a second reinforcement groove 12 is provided inside the end 2;

[0035] The second reinforcement groove 12 is connected to the third flow channel 11 , and the asphalt glue flows into the second reinforcement groove 12 , so that the lower part of the connection of the electrode column 1 can be effectively reinforced.

[0036] Preferably, a fifth flow channel 15 is provided inside the end head 2, and the fifth flow channel 15 is connected to the first reinforcement groove 10;

[0037] A through hole 14 is provided inside the central column 4 , and both ends of the through hole 14 are connected to the fifth flow channel 15 , so that the asphalt glue can flow inside the through hole 14 and the fifth flow channel 15 .

[0038] Preferably, the bottom inner wall of the circular groove 6 is fixedly connected with a ring plate 7, and the number of the ring plates 7 is three groups. The three groups of ring plates 7 are surrounded by filling grooves 16 in pairs, so that the asphalt glue can fill the filling grooves 16. At the same time, in cooperation with the central column 4, the reinforcement effect of the connecting end of the electrode column 1 can be improved.

[0039] Working principle: After the staff fixes the two groups of electrode columns 1 through the threads between the end 2 and the matching groove 3, the staff injects asphalt glue through the grouting hole 5, and then the asphalt glue flows into the first flow channel 8, the second flow channel 9 and the first reinforcement groove 10 through the grouting hole 5. At this time, the asphalt glue flowing into the first reinforcement groove 10 will fill the filling groove 16, the through hole 14 and the second reinforcement groove 12 through the third flow channel 11 and the fourth flow channel 13. When the asphalt glue is filled and left to solidify, the connection between the two groups of electrode columns 1 can be reinforced, and the first flow channel 8, the first reinforcement groove 10, the second reinforcement groove 12 and the filling groove 16 are distributed left and right, in the middle, and up and down at the electrode connection, so that the connection of the electrode column 1 can be more evenly reinforced, ensuring that the connection of the electrode column 1 will not be excessively burned and broken during operation, so that the electrode column 1 can work stably.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A graphite electrode for electrical equipment, comprising an electrode column (1), characterized in that: One end of the electrode column (1) is provided with an end cap (2), and an end of the electrode column (1) away from the end cap (2) is provided with a matching groove (3), the end caps (2) of one group of electrode columns (1) are threadedly connected with the matching groove (3) of another electrode column (1), a circular groove (6) is provided on one inner wall of the matching groove (3), a center column (4) is fixedly connected to one inner wall of the circular groove (6), a slot is provided inside the end cap (2), and the center column (4) matches the slot; A reinforcement component is arranged inside the end head (2).

2. The graphite electrode for electrical equipment according to claim 1, characterized in that: The reinforcement component comprises a grouting hole (5) provided on the circumferential outer wall of the electrode column (1); a first flow channel (8) is provided on the circumferential inner wall of the matching groove (3); the first flow channel (8) is connected to the grouting hole (5); and a second flow channel (9) is provided on the circumferential inner wall of the matching groove (3) and the circumferential outer wall of the end head (2).

3. The graphite electrode for electrical equipment according to claim 2, characterized in that: A first reinforcement groove (10) is provided inside the end head (2); The first reinforcement groove (10) is communicated with the second flow channel (9).

4. The graphite electrode for electrical equipment according to claim 3, characterized in that: A third flow channel (11) and a fourth flow channel (13) are provided inside the end head (2); the third flow channel (11) and the fourth flow channel (13) are both connected to the first reinforcement groove (10).

5. The graphite electrode for electrical equipment according to claim 4, characterized in that: A second reinforcement groove (12) is provided inside the end head (2); The second reinforcement groove (12) is communicated with the third flow channel (11).

6. The graphite electrode for electrical equipment according to claim 5, characterized in that: A fifth flow channel (15) is provided inside the end head (2), and the fifth flow channel (15) is connected to the first reinforcement groove (10); A through hole (14) is provided inside the central column (4), and both ends of the through hole (14) are connected to the fifth flow channel (15).

7. The graphite electrode for electrical equipment according to claim 6, characterized in that: The inner wall of the bottom of the circular groove (6) is fixedly connected with a ring plate (7), and the number of the ring plates (7) is three groups, and the three groups of ring plates (7) are arranged in pairs to form a filling groove (16).

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