Top-inserted electrode set for glass electric melting furnace

Abstract

The utility model belongs to the field of electrodes of glass electric melting furnaces, and particularly relates to a top-inserted electrode sleeve group for a glass electric melting furnace, which comprises a cooling water sleeve, a water sleeve tail pipe and a molybdenum electrode, two ends of the cooling water sleeve are respectively connected with the water sleeve tail pipe and the molybdenum electrode, a stainless steel sleeve is wrapped on the outer wall of the cooling water sleeve, and the molybdenum electrode is connected with the stainless steel sleeve. The molybdenum electrode is sleeved with the molybdenum disc, the molybdenum disc is connected with the cooling water jacket, the electrode sleeve set can protect the cooling water jacket and the molybdenum electrode, damage to the cooling water jacket and the molybdenum electrode when the glass liquid level changes is reduced, and the service life of the electrode sleeve set is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electrode field of glass electric smelting furnace, concretely relates to a top insertion electrode sleeve set for glass electric smelting furnace. BACKGROUND

[0002] The top insertion mode of glass electric smelting furnace heating electrode, the electrode has the characteristics of convenient installation and maintenance and easy position adjustment, and is used in many glass types. However, the glass liquid level in the smelting furnace often changes. If the electrode height position is not adjusted in time, the liquid level is lower than the heating part of the molybdenum electrode, and the molybdenum electrode will be exposed to high-temperature air, and the molybdenum will be quickly oxidized above 600 DEG C, resulting in the service life of the entire electrode sleeve set being shortened; when the liquid level is high, the cooling water jacket will enter the high-temperature glass liquid, and the glass liquid is above 1200 DEG C, so the cooling water jacket will be quickly eroded. Therefore, the protective combination between the outer layer of the cooling water jacket and the molybdenum electrode is very important.

[0003] A product in the prior art has a refractory layer sleeved on the cooling water jacket, wherein the refractory layer has a double-layer structure, the inner layer material of the refractory layer is quartz ceramic, and the outer layer material is glass fiber cloth; the expansion coefficients of the inner and outer layers of the refractory layer are different, and large internal stress is easily generated in the heating process, cracks and delamination of the inverted refractory layer are generated, the service life of the refractory layer is affected, and the glass liquid or air easily enters the refractory layer to affect the service life of the cooling water jacket. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems in the prior art, the utility model provides a top insertion electrode sleeve set for glass electric smelting furnace, which can adapt to temperature changes, effectively protect the cooling water jacket and the molybdenum electrode, reduce the damage of the cooling water jacket and the molybdenum electrode when the glass liquid level changes, and prolong the service life of the electrode sleeve set.

[0005] The utility model adopts the specific technical scheme of:

[0006] A top insertion electrode sleeve set for glass electric smelting furnace, comprising a cooling water jacket, a water jacket tail pipe and a molybdenum electrode, both ends of the cooling water jacket are connected with the water jacket tail pipe and the molybdenum electrode respectively, a stainless steel sleeve is wrapped on the outer wall of the cooling water jacket, the molybdenum electrode is sleeved with a molybdenum disc, and the molybdenum disc is connected with the cooling water jacket.

[0007] The stainless steel sleeve and the cooling water jacket are welded, and the welding seam between the stainless steel sleeve and the cooling water jacket is V-shaped.

[0008] An external thread sleeve is arranged at the lower end of the cooling water jacket, the molybdenum electrode is installed in the external thread sleeve, an internal thread is arranged on the molybdenum disc, and the molybdenum disc is connected with the cooling water jacket through the internal thread and the external thread sleeve.

[0009] The molybdenum disc is provided with a set of dismounting grooves, which are in plug-in cooperation with the dismounting rod for prying the molybdenum disc to realize the dismounting of the molybdenum disc.

[0010] The outer edge of the molybdenum disc is provided with an upward annular flange, the sidewall of the stainless steel sleeve is provided with an annular groove matched with the annular flange, and the outer diameter of the molybdenum disc is the same as the maximum outer diameter of the stainless steel sleeve.

[0011] The lower end of the stainless steel sleeve is flush with the lower end of the cooling water jacket, and the height ratio of the stainless steel sleeve to the cooling water jacket is 1:(1.1-1.6).

[0012] The molybdenum disc is provided with a set of dismounting grooves, which are in plug-in cooperation with the dismounting rod for prying the molybdenum disc to realize the dismounting of the molybdenum disc.

[0013] 1、The technical scheme of wrapping the stainless steel sleeve on the outer wall of the cooling water jacket is adopted, the stainless steel sleeve has good thermal shock resistance, can withstand rapid temperature change without damage, thereby long-acting protection is realized for the cooling water jacket, and the stainless steel sleeve can prevent the glass liquid from corroding the cooling water jacket after the glass liquid immerses the molybdenum electrode, thereby prolonging the service life of the cooling water jacket and the whole electrode sleeve set;

[0014] 2、The upper end of the molybdenum electrode is sleeved with the molybdenum disc, when the glass liquid surface descends, the molybdenum disc prevents the molybdenum electrode from being exposed to high-temperature air, and slows down the oxidation speed of the molybdenum electrode;

[0015] 3、The stainless steel sleeve and the cooling water jacket are welded, and good sealing is realized between the two, thereby preventing the glass liquid from seeping into the stainless steel sleeve and contacting the cooling water jacket;

[0016] 4、The outer edge of the molybdenum disc is provided with an upward annular flange, the annular flange is sleeved on the stainless steel sleeve to improve the sealing performance between the molybdenum disc and the stainless steel sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is Figure 1 It is an enlarged schematic view of the local part A;

[0019] Figure 3 It is Figure 2 It is an enlarged schematic view of the local part B;

[0020] In the drawings, 1 is a cooling water jacket, 2 is a water jacket tail pipe, 3 is a molybdenum electrode, 4 is a stainless steel sleeve, 5 is a molybdenum disc, 501 is an annular flange, 6 is an external thread sleeve, 7 is a dismounting groove, and 8 is a welding seam. DETAILED DESCRIPTION

[0021] The utility model will be further described in combination with the drawings and specific embodiments:

[0022] Specific embodiments include, for example Figure 1 , Figure 2 The utility model relates to a top insertion electrode set for glass electric smelting furnace, including cooling water jacket 1, water jacket tail pipe 2 and molybdenum electrode 3, and the both ends of cooling water jacket 1 are connected with water jacket tail pipe 2, molybdenum electrode 3 respectively, and the outer wall of cooling water jacket 1 is wrapped with stainless steel sleeve 4, and molybdenum electrode 3 is equipped with molybdenum disc 5, and molybdenum disc 5 is connected with cooling water jacket 1. Stainless steel sleeve 4 is single layer structure, and the material of stainless steel sleeve 4 is 316L stainless steel, and stainless steel sleeve 4 protects cooling water jacket 1, prevents the corrosion of cooling water jacket 1 after glass liquid submerges molybdenum electrode 3, prolongs the service life of cooling water jacket 1 and whole electrode set, on the other hand, stainless steel sleeve 4 has certain heat conduction capacity, can disperse the heat absorbed to the surrounding environment when glass liquid contacts with stainless steel sleeve 4, has the heat dissipation effect to the cooling water jacket 1 inside stainless steel sleeve 4, when glass liquid level drops, molybdenum disc 5 can block molybdenum electrode 3 from being exposed to high temperature air to a certain extent, slows down the oxidation speed of molybdenum electrode 3 under high temperature, thereby prolongs the service life of molybdenum electrode 3.

[0023] Stainless steel sleeve 4 has good thermal shock resistance, can bear the rapid temperature change without damage. When the glass liquid level changes or the smelting furnace working condition changes, stainless steel sleeve 4 can adapt to the temperature change, and will not crack or break due to thermal stress.

[0024] As shown in Figure 3 Stainless steel sleeve 4 is welded with cooling water jacket 1, and the welding seam 8 between stainless steel sleeve 4 and cooling water jacket 1 is V-shaped. The welding mode can make stainless steel sleeve 4 and cooling water jacket 1 closely combined, prevent glass liquid from seeping from the connection between the two, and the welding seam 8 is V-shaped, which is convenient for the filling of welding seam 8 metal, improves the sealing between stainless steel sleeve 4 and cooling water jacket 1, further enhances the protection effect of stainless steel sleeve 4 on cooling water jacket 1, and improves the reliability and stability of the whole electrode set.

[0025] The lower end of cooling water jacket 1 is provided with an external thread sleeve 6, the molybdenum electrode 3 is installed in the external thread sleeve 6, the molybdenum disc 5 is provided with an internal thread, the molybdenum disc 5 is connected with the cooling water jacket 1 by means of the internal thread and the external thread sleeve 6, and the molybdenum disc 5 and the cooling water jacket 1 are convenient to disassemble and assemble, which is convenient for the replacement of the molybdenum disc. Specifically, the molybdenum disc 5 is provided with a stepped hole, the internal thread is arranged on the inner wall of the large hole of the stepped hole, and the small hole of the stepped hole is arranged in close contact with the molybdenum electrode 3. Even if the disassembly and assembly of the molybdenum disc 5 are facilitated, the molybdenum disc 5 can also isolate the lower end of the cooling water jacket 1 from the glass liquid, preventing the cooling water jacket 1 from contacting the glass liquid.

[0026] A set of dismounting grooves 7 are arranged on the molybdenum disc 5, and the dismounting grooves 7 are in plug-in cooperation with the dismounting rod for prying the molybdenum disc 5 to realize the dismounting of the molybdenum disc 5. The dismounting grooves 7 are downwardly opened blind holes, which avoid the lower end of the cooling glove 1 from contacting with the glass liquid. When the molybdenum disc needs to be dismounted, the dismounting rod can be inserted into the dismounting groove 7, and the molybdenum disc 5 is easily rotated by means of the dismounting rod, and the operation is more convenient.

[0027] As shown in Figure 2 The outer edge of the molybdenum disc 5 is provided with an upward annular flange 501, and the side wall of the stainless steel sleeve 4 is provided with an annular groove matched with the annular flange 501. Under the premise of controlling the overall thickness of the molybdenum disc 5, only the upward annular flange 501 is arranged on the outer edge of the molybdenum disc 5, which prolongs the thickness of the outer edge of the molybdenum disc 5. The annular flange 501 is arranged in the annular groove and wraps the stainless steel sleeve 4, which further enhances the sealing between the molybdenum disc 5 and the stainless steel sleeve 4, reduces the damage of air or glass liquid entering the stainless steel sleeve 4 to the molybdenum electrode 3 or the cooling water jacket 1. The outer diameter of the molybdenum disc 5 is the same as the maximum outer diameter of the stainless steel sleeve 4. After installation, the outer wall of the molybdenum disc 5 is flush with the outer wall of the stainless steel sleeve 4, which improves the regularity of the appearance of the electrode sleeve group. The thickness of the molybdenum disc 5 can be selected according to the actual use condition. The arrangement of the annular flange 501 can avoid the increase of the overall thickness of the molybdenum disc 5, reduce the material of the molybdenum disc 5, and help to control the production cost.

[0028] Preferably, the lower end of the stainless steel sleeve 4 is flush with the lower end of the cooling water jacket 1, and the height ratio of the stainless steel sleeve 4 to the cooling water jacket 1 is 1:(1.1-1.6), that is, the upper end of the stainless steel sleeve 4 is lower than the upper end of the cooling water jacket 1. Under the premise of ensuring that the stainless steel sleeve 4 has enough protection length for the cooling water jacket 1, the stainless steel sleeve 4 is prevented from being too long to cause material waste.

Claims

1. A top electrode set for glass electric melting furnace, comprising a cooling water jacket (1), a water jacket tail pipe (2) and a molybdenum electrode (3), both ends of the cooling water jacket (1) are connected with the water jacket tail pipe (2) and the molybdenum electrode (3) respectively, characterized in that: The outer wall of the cooling jacket (1) is wrapped with a stainless steel sleeve (4), the molybdenum electrode (3) is provided with a molybdenum disc (5), and the molybdenum disc (5) is connected with the cooling jacket (1).

2. A set of roof-mounted electrodes for an electric glass melter according to claim 1, characterized in that: The stainless steel sleeve (4) is welded with the cooling jacket (1), and the welding seam (8) between the stainless steel sleeve (4) and the cooling jacket (1) is V-shaped.

3. A roof electrode set for an electric glass melting furnace according to claim 1, characterized in that: The lower end of the cooling jacket (1) is provided with an external thread sleeve (6), the molybdenum electrode (3) is installed in the external thread sleeve (6), the molybdenum disc (5) is provided with an internal thread, and the molybdenum disc (5) is connected with the cooling jacket (1) by means of the internal thread and the external thread sleeve (6).

4. A roof electrode set for an electric glass melting furnace according to claim 1, characterized in that: A group of dismounting grooves (7) are arranged on the molybdenum disc (5), the dismounting grooves (7) are inserted and matched with a dismounting rod to drive the molybdenum disc (5) to realize dismounting of the molybdenum disc (5).

5. A roof electrode set for an electric glass melting furnace according to claim 1, characterized in that: An upward annular flange (501) is arranged on the outer edge of the molybdenum disc (5), a ring-shaped groove is arranged on the side wall of the stainless steel sleeve (4) and matched with the annular flange (501), and the outer diameter of the molybdenum disc (5) is the same as the maximum outer diameter of the stainless steel sleeve (4).

6. A roof electrode set for an electric glass melting furnace according to claim 1, characterized in that: The lower end of the stainless steel sleeve (4) is flush with the lower end of the cooling jacket (1), and the height ratio of the stainless steel sleeve (4) to the cooling jacket (1) is 1:(1.1-1.6).

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