CN219161183U

CN219161183U - Online measuring device for diameter of graphite electrode of electric furnace

Info

Publication number: CN219161183U
Application number: CN202222852015.3U
Authority: CN
Inventors: 李琨; 张永武; 童斌斌; 王新平; 黄德胜
Original assignee: Xi'an Electric Furnace Institute Co ltd
Current assignee: Xi'an Electric Furnace Institute Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-06-09
Anticipated expiration: 2032-10-28

Abstract

The utility model provides an online measuring device for the diameter of a graphite electrode of an electric furnace, which comprises an outer sleeve and an inner pull rod, wherein the outer sleeve is of an F-shaped structure, the inner pull rod is of an n-shaped structure, the inner pull rod comprises a main rod, and the main rod is inserted into a main body cross rod of the outer sleeve and can slide relatively; the remote end of the measuring device is a measuring end, and the near end is a handheld end; the measuring ends of the outer sleeve and the inner pull rod are respectively provided with a short rod perpendicular to the main body cross rod, and the two short rods form a clamp structure for measuring the graphite electrode; the hand-held end of the inner pull rod is provided with a handle; the handheld end of the outer sleeve is provided with a limiting rod, and a main body cross rod at the proximal end of the limiting rod is also provided with scale marks; the handle is provided with indication marks corresponding to the scale marks. The utility model can realize the contact measurement of the high-temperature graphite electrode, the measured value is accurate and reliable, the measuring device is simple and easy to manufacture, and the cost is low. And can be installed through the combination, convenient to detach transportation and storage.

Description

Online measuring device for diameter of graphite electrode of electric furnace

Technical Field

The utility model belongs to the field of arc furnace smelting, and particularly relates to an online measuring device for the diameter of a graphite electrode of an electric furnace.

Background

The electric arc furnace is characterized in that electric energy is input into the electric arc smelting furnace through a graphite electrode, and electric arc generated between the end part of the electrode and furnace burden is used as a heat source for smelting, and the electric arc smelting furnace is mainly applied to the special metal smelting stage of steelmaking, wherein the graphite electrode is inserted into the inner cavity of the electric arc furnace in the smelting process of the electric arc furnace, and the temperatures of the electrode, raw materials and the furnace can reach more than 1500 ℃. The graphite electrode is the only way to transmit energy in the smelting process, and the technological requirement is to keep the stable transmission of electric energy in the smelting process, so as to reduce three-phase unbalance. Under the continuous contact high temperature, electromagnetism and cavitation environment, the graphite electrode has the advantages that the loss is faster, the diameter change of the graphite electrode along the length direction is different, the diameters of the three graphite electrodes are inconsistent along with the smelting time, and the unbalance of three-phase electric energy is increased. In order to be able to more accurately tailor the process and process adjustments, it is often necessary to obtain the diameter change of the graphite electrode, in order to calculate the current and voltage changes across the graphite electrode. In reality, in a high-temperature environment with the temperature of more than 1500 ℃, due to infrared interference, an infrared range finder cannot be adopted to measure the diameter on line, and usually, whether to replace an electrode is determined according to the consumption degree observed empirically, and after the electrode is disassembled and the temperature of the electrode is reduced, the diameter change of the electrode is measured in a short distance. Thus, the online diameter change cannot be obtained, and thus the process cannot be matched in real time, namely, the current and voltage adjustment of the three electrodes cannot be optimized, and the overall optimization process of the process is slower.

Disclosure of Invention

In view of the above, the utility model provides an on-line measuring device for the diameter of a graphite electrode of an electric furnace, which has the advantages of simple structure, light weight and convenient use, and can be used for on-line contact measurement of the diameter of a high-temperature graphite electrode.

The technical scheme of the embodiment of the utility model is as follows:

the online measuring device for the diameter of the graphite electrode of the electric furnace comprises an outer sleeve and an inner pull rod, wherein the outer sleeve is of an F-shaped structure, the inner pull rod is of an n-shaped structure, and the inner pull rod comprises a main rod which is inserted into a main body cross rod of the outer sleeve and can slide relatively;

the remote end of the measuring device is a measuring end, and the near end is a handheld end;

the measuring ends of the outer sleeve and the inner pull rod are respectively provided with a short rod perpendicular to the main body cross rod, and the two short rods form a clamp structure for measuring the graphite electrode;

the hand-held end of the inner pull rod is provided with a handle;

the handheld end of the outer sleeve is provided with a limiting rod, and a main body cross rod at the proximal end of the limiting rod is also provided with scale marks;

the handle is provided with indication marks corresponding to the scale marks.

The inner pull rod is formed by tightly sleeving and connecting two L-shaped structures.

The handle and the main rod are welded integrally or are of a detachable connection structure.

The whole structure of the measuring device is a hollow square tube.

The indication mark is an indication needle arranged at the tail end of the handle.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model can realize the contact measurement of the high-temperature graphite electrode, the measured value is accurate and reliable, the measuring device is simple and easy to manufacture, and the cost is low. And can be installed through the combination, convenient to detach transportation and storage.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the measuring end according to the present utility model;

FIG. 3 is a schematic view of a hand-held end according to the present utility model;

FIG. 4 is a schematic view of the construction of the inner tie rod of the present utility model;

FIG. 5 is a measurement schematic of the present utility model;

in the figure, 1-outer sleeve, 1-1 handle, 1-2 indicating needle, 2-1 main rod, 2-2 limit rod, 2-3 scale marks, 2 inner pull rod and 3 electrodes.

Detailed Description

The present utility model will be described in detail with reference to the following embodiments.

Referring to fig. 1, the main structure of the utility model is:

the device comprises an outer sleeve 1 and an inner pull rod 2, wherein the outer sleeve 1 is of an F-shaped structure, the inner pull rod 2 is of an n-shaped structure, the inner pull rod 2 comprises a main rod 2-1, and the main rod 2-1 is arranged in the outer sleeve 1 and can move relatively; the measuring ends of the outer sleeve 1 and the inner pull rod 2 are respectively provided with a short rod vertical to the transverse rod of the main body, and the two short rods form a clamp structure for measurement; the hand-held end of the inner pull rod 2 is provided with a handle 1-1; the hand-held end of the outer sleeve 1 is provided with a limiting rod 2-2.

Referring to fig. 2, the measuring end of the measuring device forms a clip structure for measuring for the two short rods of the outer sleeve 1 and the inner pull rod 2, and the inner pull rod 2 and the outer sleeve 1 can realize relative movement, so that the two short rods can realize relative movement, and the two short rods are contacted with the electrode for measuring the diameter of the electrode.

Referring to fig. 3, the hand-held end of the measuring device is shown in the figure, wherein the hand-held end of the outer sleeve 1 is provided with a limit rod 2-2, and a main body cross bar at the proximal end of the limit rod 2-2 is also provided with scale marks 2-3; the handle 1-1 is provided with an indicating needle 1-2 corresponding to the scale marks 2-3; when the handle 1-1 moves horizontally, the short rod at the measuring end of the inner pull rod 2 moves simultaneously, and the moving distance of the short rod and the short rod is the same.

Referring to fig. 4, the inner pull rod 2 of the present utility model is formed by tightly sleeving and connecting two L-shaped structures, and when in installation, the two L-shaped structures respectively extend into the main cross rod of the outer sleeve 1 and are tightly sleeved and connected inside.

Referring to fig. 5, the specific usage mode of the present utility model is:

in actual work, after the graphite electrode is lifted from the furnace or the ladle, the diameter of the electrode II to be measured is manually measured by using the measuring tool I in a power-off state. The specific implementation is as follows: pushing the inner pull rod 2 at the hand-held end to separate the outer sleeve 1 from the inner pull rod to form an F-shaped clip, sleeving the clip into the electrode 3, and tensioning the handle 1-1 to enable the clip to be attached to the outer edge of the electrode II. And reading the position of the scale mark indicated by the indicating needle, namely, the diameter of the measuring position of the electrode 3.

The content of the utility model is not limited to the examples listed, and any equivalent transformation to the technical solution of the utility model that a person skilled in the art can take on by reading the description of the utility model is covered by the claims of the utility model.

Claims

1. An online measuring device for the diameter of a graphite electrode of an electric furnace is characterized in that:

the novel telescopic rod comprises an outer sleeve (1) and an inner pull rod (2), wherein the outer sleeve (1) is of an F-shaped structure, the inner pull rod (2) is of an n-shaped structure, the inner pull rod (2) comprises a main rod (2-1), and the main rod (2-1) is inserted into a main body cross rod of the outer sleeve (1) and can slide relatively;

short rods perpendicular to the main body cross rod are respectively arranged at the measuring ends of the outer sleeve (1) and the inner pull rod (2), and the two short rods form a clip structure for measuring the graphite electrode (3);

the hand-held end of the inner pull rod (2) is provided with a handle (1-1);

a limiting rod (2-2) is arranged at the handheld end of the outer sleeve (1), and a scale mark (2-3) is also arranged on a main body cross rod at the proximal end of the limiting rod (2-2);

the handle (1-1) is provided with indication marks corresponding to the scale marks (2-3).

2. The online measuring device for the diameter of the graphite electrode of the electric furnace according to claim 1, wherein:

the inner pull rod (2) is formed by tightly sleeving and connecting two L-shaped structures.

3. The online measuring device for the diameter of the graphite electrode of the electric furnace according to claim 2, wherein:

the handle (1-1) and the main rod (2-1) are integrally welded or are of a detachable connecting structure.

4. An electric furnace graphite electrode diameter on-line measuring device according to claim 3, characterized in that:

the whole structure of the measuring device is a hollow square tube.

5. The online measuring device for the diameter of the graphite electrode of the electric furnace according to claim 4, wherein:

the indication mark is an indication needle (1-2) arranged at the tail end of the handle (1-1).