CN215818677U - Spring wedge type submerged arc furnace electrode sealing device - Google Patents
Spring wedge type submerged arc furnace electrode sealing device Download PDFInfo
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- CN215818677U CN215818677U CN202122229605.6U CN202122229605U CN215818677U CN 215818677 U CN215818677 U CN 215818677U CN 202122229605 U CN202122229605 U CN 202122229605U CN 215818677 U CN215818677 U CN 215818677U
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Abstract
The utility model belongs to the technical field of ferroalloy smelting submerged arc furnaces, and particularly relates to a spring wedge type submerged arc furnace electrode sealing device which can automatically compensate the abrasion of an electrode sealing material through a spring wedge and realize good sealing with a furnace shell. A plurality of wedge block sealing groups are arranged at intervals on the circumference between a furnace shell and an electrode, each wedge block sealing group in an annular sealing space with a rectangular section comprises a middle screw rod, a spring is sleeved on the screw rod, a movable wedge block is sleeved on the screw rod below the spring, a fixed wedge block is arranged on the outer side of the movable wedge block, a sealing refractory brick in contact with the electrode is arranged on the inner side of the movable wedge block, and an annular pressing plate for axially positioning the sealing refractory brick is arranged on the upper portion of the sealing refractory brick. Simple structure, low material and manufacturing cost. The automatic compensation sealing device is provided with the spring, so that the automatic compensation of the sealing abrasion gap is realized, the sealing state is always ensured during working, and the sealing effect is better.
Description
Technical Field
The utility model belongs to the technical field of ferroalloy smelting submerged arc furnaces, and particularly relates to a spring wedge type submerged arc furnace electrode sealing device which can automatically compensate the abrasion of an electrode sealing material through a spring wedge and realize good sealing with a furnace shell.
Background
In the prior art, the sealing between the electrode and the furnace shell of the submerged arc furnace is a key part which influences the working efficiency of the submerged arc furnace, the sealing is not tight, the oxidation of the electrode can be accelerated, the phenomenon of electrode failure or serious smoke leakage occurs, and the working environment is influenced.
At present, the following methods are mostly adopted, but some methods are higher in manufacturing and running cost, and some methods are not high in cost, but are not ideal in sealing and using effects.
The first mode is as follows: multilayer copper ring staggered seal
The mode generally adopts 3 layers of copper rings, and compensation sealing is carried out through a spring and an outer ring fixing frame respectively. Although the sealing effect is good, the sealing device has the following problems:
1. the copper ring material is adopted, and the investment cost is high.
2. Because the sealing position of the electrode and the furnace shell needs an annular supporting sealing frame, the space of the electrode guide device is occupied, and the electrode guide device is inconvenient or cannot be installed.
3. The copper ring is adopted for sealing, and an insulating device for an electrode and a furnace shell needs to be arranged in a matched manner due to the electrification property, so that the structure is complex, and the reliability is low.
The second mode is as follows: annular nitrogen seal
The method adopts a mode of flushing nitrogen into the annular structure space to seal the electrode and the furnace shell. The electrode can be prevented from being oxidized and broken, but nitrogen is required to be always introduced during working, and the nitrogen is always in a gas leakage and gas supplement state because the sealing part cannot be kept tight, so that the consumption of the nitrogen is large and uneconomical.
The third mode is as follows: annular space is filled with resistant firebrick and is added refractory fiber and sealed
This mode is to adopt and to pack resistant firebrick and add refractory fiber at electrode and stove outer covering gap and seal, because of the electrode can reciprocate at the during operation, the in-process refractory material drops easily and wearing and tearing, often need mend at any time, though the cost of manufacture is low, but the result of use is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide the spring wedge type submerged arc furnace electrode sealing device which is reasonable in structure, low in cost and good in sealing between an electrode and a furnace shell.
The technical solution of the utility model is as follows: the spring wedge type submerged arc furnace electrode sealing device is characterized in that a plurality of wedge block sealing groups are arranged at intervals on the circumference between a furnace shell and an electrode, each wedge block sealing group in an annular sealing space with a rectangular cross section comprises a middle screw rod, a spring is sleeved on each screw rod, a movable wedge block is sleeved on each screw rod below the spring, a fixed wedge block is arranged on the outer side of each movable wedge block, a sealing refractory brick in contact with the electrode is arranged on the inner side of each movable wedge block, and an annular pressing plate for axially positioning the sealing refractory brick is arranged on the upper portion of each sealing refractory brick.
In the above scheme, the method further comprises:
an adjusting gasket is arranged between the movable wedge block and the sealed refractory brick.
The installation form of the sealing refractory bricks adopts Z-shaped connection which ensures the sealing performance.
The utility model has the advantages that: 1. simple structure, low material and manufacturing cost. 2. The sealing device occupies small installation space and can be synchronously installed with the electrode guide device. 3. The automatic compensation sealing device is provided with the spring, so that the automatic compensation of the sealing abrasion gap is realized, the sealing state is always ensured during working, and the sealing effect is better. 4. The insulating refractory sealing refractory bricks are used for sealing, so that the problem of insulation between the electrodes and the furnace shell is solved. 5. The sealing condition can be visually checked and maintained during working.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic top view of fig. 1.
FIG. 3 is a schematic view of the butt joint structure of refractory sealed refractory bricks.
Detailed Description
Referring to fig. 1-3, the part names are as follows: the device comprises an electrode 1, a furnace shell 2, a sealing firebrick 3, an adjusting gasket 4, a movable wedge 5, a fixed wedge 6, a screw 7, a spring 8, a pressure plate 9, a gap L between the furnace shell and the electrode, a compensation height L2 and a sliding gap L3.
Referring to fig. 1-3, the spring wedge type submerged arc furnace electrode sealing device is characterized in that a plurality of wedge block sealing groups are arranged at intervals on the circumference between a furnace shell 2 and an electrode 1, each wedge block sealing group in an annular sealing space with a rectangular cross section comprises a middle screw rod 7, a spring 8 and a nut are sleeved on the screw rod 7, a movable wedge block 5 (made of Q345B steel in a shape of a single-side wedge and a middle groove-shaped guide hole) is sleeved on the screw rod 7 below the spring 8, a fixed wedge block 6 (made of Q345B in a shape of a single-side wedge) is arranged on the outer side of the movable wedge block 5, a sealing refractory brick 3 in contact with the electrode 1 is arranged on the inner side of the movable wedge block 5, and a pressing plate 9 for axially positioning the sealing refractory brick 3 is arranged on the upper portion of the sealing refractory brick 3.
A spacer 4 is installed between the movable wedge 5 and the sealing firebrick 3.
The installation form of the sealing refractory bricks 3 adopts a Z-shaped connection which ensures the sealing performance.
The electrode 1 forms an annular sealing space with a rectangular section between furnace shells 2, a plurality of wedge block sealing groups are annularly arranged in the space, and each wedge block sealing group consists of a sealing refractory brick 3, an adjusting gasket 4, a movable wedge block 5, a fixed wedge block 6, a screw 7 and a spring 8. After the multiple groups are installed, the annular pressing plate 9 is installed at the upper part to axially position the sealed refractory bricks 3. The installation form between the sealed firebricks 3 adopts the zigzag to this guarantees to have sealed face between brick and the brick all the time, guarantees the leakproofness, and the butt joint facade has the compensation space simultaneously, can realize the compensation and remove.
The working principle is as follows: the sealing of the electrode 1 and the furnace shell 2 is an annular seal (20 groups in figure 2) formed by a plurality of groups of wedge block seal groups, when each group of wedge block seal groups works, the inner arc surface of the sealing refractory brick 3 is contacted with the electrode 1, the bottom surface of the sealing refractory brick 3 is contacted with the annular plate of the furnace shell 2, and the sealing is carried out by the sealing refractory brick 3. The thrust applied to the movable wedge 5 by the spring 8 is always applied to the rear surface of the sealed firebrick 3, so that the sealed firebrick 3 is always close to the electrode 1 to keep a sealed state. The rear part of the movable wedge 5 is provided with a fixed wedge 6 which has the function of realizing the downward movement of the movable wedge 5 and the movement towards the electrode 1 through the inclined surface sliding contact. An adjusting gasket 4 is arranged between the movable wedge 5 and the sealed refractory brick 3, and the function is to realize continuous compensation after adding the adjusting gasket after the compensation limit of the wedge.
The foregoing description is only exemplary of the utility model and is not intended to limit the spirit of the utility model.
Claims (3)
1. The spring wedge type submerged arc furnace electrode sealing device is characterized in that a plurality of groups of wedge block sealing groups are arranged at intervals on the circumference between a furnace shell (2) and an electrode (1), each wedge block sealing group in an annular sealing space with a rectangular cross section comprises a middle screw rod (7), a spring (8) is sleeved on each screw rod (7), a movable wedge block (5) is sleeved on each screw rod (7) below each spring (8), a fixed wedge block (6) is arranged on the outer side of each movable wedge block (5), a sealing refractory brick (3) in contact with the electrode (1) is arranged on the inner side of each movable wedge block (5), and a pressing plate (9) for axially positioning the sealing refractory brick (3) is arranged on the upper portion of each sealing refractory brick (3).
2. A spring wedge submerged arc furnace electrode sealing arrangement according to claim 1, characterized in that between the moving wedge (5) and the sealing firebrick (3) is arranged a spacer washer (4).
3. A spring wedge submerged arc furnace electrode sealing arrangement according to claim 1 or 2, characterized in that the form of the installation between the sealing firebricks (3) is a zigzag connection ensuring tightness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122229605.6U CN215818677U (en) | 2021-09-15 | 2021-09-15 | Spring wedge type submerged arc furnace electrode sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122229605.6U CN215818677U (en) | 2021-09-15 | 2021-09-15 | Spring wedge type submerged arc furnace electrode sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215818677U true CN215818677U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122229605.6U Active CN215818677U (en) | 2021-09-15 | 2021-09-15 | Spring wedge type submerged arc furnace electrode sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215818677U (en) |
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2021
- 2021-09-15 CN CN202122229605.6U patent/CN215818677U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Electrode sealing device of spring wedge submerged arc furnace Effective date of registration: 20221121 Granted publication date: 20220211 Pledgee: Tonghua Branch of China Construction Bank Corp. Pledgor: TONGHUA JIANXIN TECHNOLOGY Co.,Ltd. Registration number: Y2022220000098 |