CN114799725A - Repair method for leakage of lower valve box body of blast furnace equipment - Google Patents
Repair method for leakage of lower valve box body of blast furnace equipment Download PDFInfo
- Publication number
- CN114799725A CN114799725A CN202210546867.1A CN202210546867A CN114799725A CN 114799725 A CN114799725 A CN 114799725A CN 202210546867 A CN202210546867 A CN 202210546867A CN 114799725 A CN114799725 A CN 114799725A
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- Prior art keywords
- welding
- spare part
- leakage
- box body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Lift Valve (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention belongs to the technical field of machinery, and relates to a repair method for leakage of a lower valve box body of blast furnace equipment.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a method for repairing leakage of a lower valve box body of blast furnace equipment.
Background
The box body of the fixed part of the passive side taper pin of the lower valve box material flow assembly of the blast furnace equipment is broken down by gas, a large-area cavity appears, the repair is difficult, and the scrapping risk exists.
Disclosure of Invention
In view of the above, the present invention provides a repair method for leakage of a lower valve box body of a blast furnace device, which repairs the leakage part of the lower valve box body, and achieves the purposes of repairing the old and utilizing the waste, reducing the cost and improving the efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: a repair method for leakage of a lower valve box body of blast furnace equipment comprises the following steps:
s1, measuring the maximum size of the leakage part according to the actual situation of the leakage part, drawing a spare part processing drawing, and processing the spare part according to the spare part drawing; meanwhile, a long shaft is processed according to the sizes of a bearing position and a spare part position of the material flow adjusting valve assembly, and the long shaft is processed according to the matching requirement;
s2, cutting the box body through part, and cutting according to the size required by the processing spare parts;
s3, in order to ensure the opening size, a positioning rod is additionally arranged at the standard size of the material flow regulating valve assembly and the opening size of the spare part, and then the long shaft and the spare part are installed;
s4, after the spare parts are installed and the opening sizes are ensured, four-side spot welding is carried out to fix the spare parts, and then the measuring tool is used for measuring the opening sizes of a plurality of positions to ensure that the requirements are met;
s5, welding the welding position of the spare part hole site according to the welding technical standard requirement, wherein the welding position is ensured to have no defects such as cracks, sand holes, welding beading and the like;
and S6, finally, installing a mask for pressure test detection in upper and lower flange pressure test detection, detecting whether leakage exists, and removing the long shaft after the repair is finished to finish the repair work.
Optionally, in the step S1, the size of the outer circle of the spare part is the size of the intact box part left after cutting according to the penetration point, and the outer circle of the spare part is chamfered to form a welding groove after the spare part is machined, so that better cladding contact welding during later welding is facilitated to be firmer.
Optionally, in step S5, the welding hand welding must use E4313 welding rod or carbon dioxide gas protection welding.
The invention has the beneficial effects that: according to the repairing method for the leakage of the lower valve box body of the blast furnace equipment, the lower valve box can be rapidly repaired and reused through the repairing technology, the repairing process is improved, the purposes of cost reduction and efficiency improvement are achieved, the repaired lower valve box can meet the production requirement, the using effect is ideal, and no accident occurs.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is an overall schematic view of the present invention;
fig. 2 is a schematic diagram of a spare part of the present invention.
Reference numerals: the device comprises a long shaft 1, a material flow adjusting valve assembly 2, a bearing position 3, a spare part hole position 4, a welding part 5, a gear opening size 6, a spare part 7, an upper flange pressure test detection installation mask 8, a lower flange pressure test detection installation mask 9 and a positioning rod 10.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 2, a method for repairing leakage of a lower valve box body of blast furnace equipment includes the following steps:
s1, measuring the maximum size of the leakage part according to the actual situation of the leakage part, drawing a processing drawing of the spare part 7, processing the spare part 7 according to the drawing of the spare part 7, wherein the size of the outer circle of the spare part 7 is the size of a perfect box body part left after cutting according to the leakage point, and the outer circle of the processed spare part 7 is chamfered to form a welding groove, so that better cladding contact welding is more firm when welding is carried out later; meanwhile, a long shaft 1 is processed according to the sizes of a bearing position 3 and a spare part 7 of the material flow adjusting valve assembly 2 (the valve plate cannot be opened due to non-coaxial arrangement, and the long shaft is used for ensuring the coaxiality and ensuring the normal opening and closing after the valve plate of the material flow adjusting valve is installed at last), and the long shaft 1 is processed according to the matching requirement;
s2, cutting the box body through part, and cutting according to the size required by the processing spare part 7;
s3, in order to ensure the opening size 6, adding a positioning rod 10 at the opening standard size of the material flow adjusting valve assembly 2 and the spare part 7, and then installing the long shaft 1 and the spare part 7;
s4, after the spare part 7 is installed and the opening size 6 is ensured, four-side spot welding is carried out to fix the spare part 7, and the measuring tool is used for measuring the opening sizes 6 at multiple positions to ensure that the requirements are met;
s5, welding the welding part 5 at the spare part hole position 4 according to the welding technical standard requirement, wherein the welding part 5 ensures no defects such as cracks, sand holes, welding beading and the like, and the manual welding of welding needs to adopt an E4313 welding rod or carbon dioxide gas shielding welding;
and S6, finally, carrying out pressure test detection on the upper flange pressure test detection installation mask 8 and the lower flange pressure test detection installation mask 9, detecting whether a leakage condition exists, dismantling the long shaft 1 after the repair is confirmed, and completing the repair work.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A repair method for leakage of a lower valve box body of blast furnace equipment is characterized by comprising the following steps:
s1, measuring the maximum size of the leakage part according to the actual situation of the leakage part, drawing a spare part processing drawing, and processing the spare part according to the spare part drawing; meanwhile, a long shaft is processed according to the sizes of a bearing position and a spare part position of the material flow adjusting valve assembly, and the long shaft is processed according to the matching requirement;
s2, cutting the box body through part, and cutting according to the size required by the processing spare parts;
s3, in order to ensure the opening size, a positioning rod is additionally arranged at the standard size of the material flow regulating valve assembly and the opening size of the spare part, and then the long shaft and the spare part are installed;
s4, after the spare parts are installed and the opening sizes are ensured, four-side spot welding is carried out to fix the spare parts, and then the measuring tool is used for measuring the opening sizes of a plurality of positions to ensure that the requirements are met;
s5, welding the welding position of the spare part hole site according to the welding technical standard requirement, wherein the welding position is ensured to have no defects such as cracks, sand holes, welding beading and the like;
and S6, finally, installing a mask for pressure test detection in upper and lower flange pressure test detection, detecting whether leakage exists, and removing the long shaft after the repair is finished to finish the repair work.
2. The repair method for the leakage of the lower valve box body of the blast furnace equipment as claimed in claim 1, characterized in that: in the step S1, the size of the outer circle of the spare part is the size of the intact box body part left after cutting according to the penetration point, the outer circle of the spare part is chamfered to form a welding groove after the spare part is machined, and better cladding contact welding is more firm when welding is carried out later.
3. The repair method for the leakage of the lower valve box body of the blast furnace equipment as claimed in claim 1, characterized in that: in the step S5, the welding hand welding must use E4313 welding rod or carbon dioxide gas protection welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546867.1A CN114799725B (en) | 2022-05-18 | 2022-05-18 | Method for repairing leakage of lower valve box body of blast furnace equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210546867.1A CN114799725B (en) | 2022-05-18 | 2022-05-18 | Method for repairing leakage of lower valve box body of blast furnace equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114799725A true CN114799725A (en) | 2022-07-29 |
| CN114799725B CN114799725B (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210546867.1A Active CN114799725B (en) | 2022-05-18 | 2022-05-18 | Method for repairing leakage of lower valve box body of blast furnace equipment |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19712868C1 (en) * | 1997-03-27 | 1998-10-01 | Mtu Muenchen Gmbh | Tip repair method for gas turbine blades |
| CN201249301Y (en) * | 2008-07-24 | 2009-06-03 | 宝山钢铁股份有限公司 | Repairing device for conical closed hole of water filling head |
| CN104400311A (en) * | 2014-11-10 | 2015-03-11 | 马钢(集团)控股有限公司 | Field positioning repairing device for shovel rod connecting barrel of electric shovel and field repairing method of field positioning repairing device |
| CN205290116U (en) * | 2015-11-30 | 2016-06-08 | 天津市精成伟业机器制造有限公司 | Major axis workpiece repair welding system |
| CN206435926U (en) * | 2017-01-24 | 2017-08-25 | 中煤第三建设集团机电安装工程有限责任公司 | Tool for replacing lug plate of heading machine body |
| CN109940337A (en) * | 2019-03-28 | 2019-06-28 | 正茂集团有限责任公司 | The restorative procedure of rods of anchor chain ring bending machine center mould location hole |
| CN211465131U (en) * | 2019-12-28 | 2020-09-11 | 天津航天长征火箭制造有限公司 | Assembly welding device for conical box bottom |
| CN213053555U (en) * | 2020-08-19 | 2021-04-27 | 唐山创华科技有限公司 | Welding equipment is restoreed to roller |
| CN213730161U (en) * | 2020-09-30 | 2021-07-20 | 四川汇众力低温科技有限公司 | Pipeline flange welding auxiliary device |
-
2022
- 2022-05-18 CN CN202210546867.1A patent/CN114799725B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19712868C1 (en) * | 1997-03-27 | 1998-10-01 | Mtu Muenchen Gmbh | Tip repair method for gas turbine blades |
| CN201249301Y (en) * | 2008-07-24 | 2009-06-03 | 宝山钢铁股份有限公司 | Repairing device for conical closed hole of water filling head |
| CN104400311A (en) * | 2014-11-10 | 2015-03-11 | 马钢(集团)控股有限公司 | Field positioning repairing device for shovel rod connecting barrel of electric shovel and field repairing method of field positioning repairing device |
| CN205290116U (en) * | 2015-11-30 | 2016-06-08 | 天津市精成伟业机器制造有限公司 | Major axis workpiece repair welding system |
| CN206435926U (en) * | 2017-01-24 | 2017-08-25 | 中煤第三建设集团机电安装工程有限责任公司 | Tool for replacing lug plate of heading machine body |
| CN109940337A (en) * | 2019-03-28 | 2019-06-28 | 正茂集团有限责任公司 | The restorative procedure of rods of anchor chain ring bending machine center mould location hole |
| CN211465131U (en) * | 2019-12-28 | 2020-09-11 | 天津航天长征火箭制造有限公司 | Assembly welding device for conical box bottom |
| CN213053555U (en) * | 2020-08-19 | 2021-04-27 | 唐山创华科技有限公司 | Welding equipment is restoreed to roller |
| CN213730161U (en) * | 2020-09-30 | 2021-07-20 | 四川汇众力低温科技有限公司 | Pipeline flange welding auxiliary device |
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| Publication number | Publication date |
|---|---|
| CN114799725B (en) | 2023-06-30 |
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