CN205115516U - Restoration structure that hot -blast branch pipe expansion joint gas blowby of blast furnace turns red - Google Patents
Restoration structure that hot -blast branch pipe expansion joint gas blowby of blast furnace turns red Download PDFInfo
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- CN205115516U CN205115516U CN201520912812.3U CN201520912812U CN205115516U CN 205115516 U CN205115516 U CN 205115516U CN 201520912812 U CN201520912812 U CN 201520912812U CN 205115516 U CN205115516 U CN 205115516U
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Abstract
The utility model provides a restoration structure that hot -blast branch pipe expansion joint gas blowby of blast furnace turns red, includes, hot -blast branch pipe including two at least bodys, is connected through an expansion joint respectively between body and the body, hot -blast branch pipe pipe inner wall sets up firebrick layer, furthermore, pack the high temperature resistant fiber blanket in the expansion joint, its characterized in that corresponds the expansion joint gas blowby and turns red the expansion joint steel shell body of department and offer a through -hole, offers an installation through -hole to hot -blast branch pipe body that should the through -hole, should install the through -hole promptly and lie in the hot -blast branch pipe body department that there is gap department in hot -blast branch pipe pipe inner wall firebrick layer, the installation through -hole sets up a mud jacking nozzle stub that can communicate hot -blast branch pipe pipe body inner cavity, and the pipe cap is established to mud jacking nozzle stub port, and just, the mud jacking nozzle stub must be within the expansion joint steel shell body after adding the pipe cap, grouting material autogenous pressure thick liquid nozzle stub gets into the gap department that hot -blast branch pipe pipe inner wall firebrick layer exists, the through -hole welding that the expansion joint steel shell body was seted up has the steel sheet that recovers that can seal this through -hole.
Description
Technical field
The utility model relates to blast furnace blowing device, and particularly blast-furnace hot-air props up the rubescent repair structure of pipe expansion joint gas blowby.
Background technology
Hotblast stove is for the equipment providing hot blast kinetic energy produced by blast furnace ironmaking, and hot blast manifold expansion joint connects blast funnace hot blast stove and hot-blast main, plays the equipment of shock absorption of expanding with heat and contract with cold.
When air-supply normally smelted by blast furnace, in hot blast manifold expansion joint, temperature is generally at about 1200 DEG C, because several hotblast stove is wheel air supply stream or blowing-out, therefore each hot blast manifold expansion joint connected also is discontinuous, in ventilation state and blowing-out state, there is the STRESS VARIATION of temperature head and various unlike material; Again because the reason that when overhauling with damping down, expansion joint expands with heat and contract with cold normally produced by blast furnace, cause producing gap because the coefficient of expansion is different between each material in expansion joint, cause hot blast gas blowby during air-supply, time serious even metal shell rubescent, cracking, run wind, serious threat blast furnace safety produce.
At present, to blast-furnace hot-air arm double-layer plate expansion joint gas blowby and rubescent, cracking, race wind, can only pack when outside pressurized air blows guarantor and blast furnace routine preventive maintenance, be in the milk or the process of integral replacing expansion joint.
The method of expansion joint packing, grouting, can make expansion joint lose Telescopic; And hot blast manifold expansion joint integral replacing, the blast furnace staying time is long, and cost is high, and capacity loss is large.
Summary of the invention
The purpose of this utility model is that designing a kind of blast-furnace hot-air props up the rubescent repair structure of pipe expansion joint gas blowby, on-line implement when can overhaul at the plan damping down that blast furnace is regular, do not destroy expansion joint flexible compensation function and without the need to integral replacing expansion joint, just really reach save time, laborsaving, economic, practical, efficient object.
For reaching described object, the technical solution of the utility model is:
Blast-furnace hot-air props up the rubescent repair structure of pipe expansion joint gas blowby, comprises, and described hot blast manifold comprises at least two bodys, is connected between body with body respectively by an expansion joint; Described hot blast manifold inboard wall of tube body arranges fire brick layer; And, fill high-temperature fibre blanket in described expansion joint; Wherein, the expansion joint steel plate housing at the corresponding rubescent place of expansion joint gas blowby offers a through hole, and to the hot blast manifold body of through hole offering an installation through hole, namely this installation through hole is positioned at the hot blast manifold body place that hot blast manifold inboard wall of tube body fire brick layer exists gap place; Install through hole and arrange the mud jacking short tube that can be communicated with hot blast manifold tube cavity, mud jacking short tube port establishes pipe cap, and mud jacking short tube must within expansion joint steel plate housing after adding pipe cap; Grouting material enters the gap place of hot blast manifold inboard wall of tube body fire brick layer existence from mud jacking short tube; The through hole that expansion joint steel plate housing is offered is welded with the recovery steel plate can closing this through hole.
Preferably, described hot blast manifold is made up of three bodys.
Preferably, described high-temperature fibre blanket is for containing zirconium tapetum fibrosum.
Preferably, the through-hole diameter of described expansion joint steel plate housing is greater than the installation through-hole diameter of described hot blast manifold body.
The beneficial effects of the utility model
The utility model can the on-line implement perforate when blast furnace staying, mud jacking repair process, do not affect former expansion joint function, significantly reduce the blast furnace staying time, avoid the production loss that integral replacing expansion joint causes because of long-time damping down.Meanwhile, can avoid because integral replacing expansion joint causes huge human and material resources, the input of financial resources.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
See Fig. 1, a kind of blast-furnace hot-air of the present utility model props up the rubescent repair structure of pipe expansion joint gas blowby, comprises, and described hot blast manifold 1 comprises three bodys 11,12,13, is connected between body with body respectively by an expansion joint 2,2 '; Described hot blast manifold 1 inboard wall of tube body arranges fire brick layer 3; And, fill high-temperature fibre blanket 4 in described expansion joint 2,2 '; The expansion joint 2 steel plate housing at the corresponding rubescent place of expansion joint gas blowby offers a through hole 21, to hot blast manifold 1 body 12 of through hole 21 offering an installation through hole 121, namely this installation through hole 121 is positioned at the hot blast manifold 1 body place that hot blast manifold 1 body 12 inwall fire brick layer 3 exists gap 31 place; Install through hole 121 and arrange the mud jacking short tube 5 that can be communicated with hot blast manifold tube cavity, mud jacking short tube 5 port establishes pipe cap 6, and mud jacking short tube 5 must within expansion joint 2 steel plate housing after adding pipe cap 6; Grouting material 7 enters gap 31 place of hot blast manifold 1 inboard wall of tube body fire brick layer 3 existence from mud jacking short tube 5; The through hole 21 that expansion joint 2 steel plate housing is offered is welded with the recovery steel plate 22 can closing this through hole 21.
Preferably, described high-temperature fibre blanket 4 is for containing zirconium tapetum fibrosum.
Preferably, through hole 21 diameter of described expansion joint 2 steel plate housing is greater than installation through hole 121 diameter of described hot blast manifold 1 body 12.
Before the maintenance of blast furnace plan damping down, with infrared thermoviewer to hot blast manifold expansion joint steel plate shell temperature detection, find out thermal self-restraint stress and gas blowby position.During the maintenance of blast furnace plan damping down, implement perforate at hot blast manifold expansion joint steel plate shell thermal self-restraint stress Steel Plate Guide Drill.Expansion joint steel plate opening diameter Φ 120mm, hot blast manifold steel plate opening diameter Φ 50mm.After steel plate perforate completes, purge hole to clean with pressurized air.At hot blast manifold position of opening welding mud jacking short tube; Pneumatic mortar machine leather hose connects mud jacking short tube, implements mud jacking joint filling; Mud jacking is complete, after waiting grouting material substantially to solidify, mud jacking short tube is changed pipe cap, then the steel plate of the perforate on expansion joint steel plate is restored welding.
Claims (4)
1. blast-furnace hot-air props up the rubescent repair structure of pipe expansion joint gas blowby, comprises,
Described hot blast manifold, comprises at least two bodys, is connected between body with body respectively by an expansion joint; Described hot blast manifold inboard wall of tube body arranges fire brick layer; And, fill high-temperature fibre blanket in described expansion joint; It is characterized in that,
The expansion joint steel plate housing at the corresponding rubescent place of expansion joint gas blowby offers a through hole, and to the hot blast manifold body of through hole offering an installation through hole, namely this installation through hole is positioned at the hot blast manifold body place that hot blast manifold inboard wall of tube body fire brick layer exists gap place; Install through hole and arrange the mud jacking short tube that can be communicated with hot blast manifold tube cavity, mud jacking short tube port establishes pipe cap, and mud jacking short tube must within expansion joint steel plate housing after adding pipe cap; Grouting material enters the gap place of hot blast manifold inboard wall of tube body fire brick layer existence from mud jacking short tube; The through hole that expansion joint steel plate housing is offered is welded with the recovery steel plate can closing this through hole.
2. blast-furnace hot-air as claimed in claim 1 props up the rubescent repair structure of pipe expansion joint gas blowby, and it is characterized in that, described hot blast manifold is made up of three bodys.
3. blast-furnace hot-air as claimed in claim 1 props up the rubescent repair structure of pipe expansion joint gas blowby, it is characterized in that, described high-temperature fibre blanket is for containing zirconium tapetum fibrosum.
4. blast-furnace hot-air as claimed in claim 1 props up the rubescent repair structure of pipe expansion joint gas blowby, and it is characterized in that, the through-hole diameter of described expansion joint steel plate housing is greater than the installation through-hole diameter of described hot blast manifold body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912812.3U CN205115516U (en) | 2015-11-16 | 2015-11-16 | Restoration structure that hot -blast branch pipe expansion joint gas blowby of blast furnace turns red |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520912812.3U CN205115516U (en) | 2015-11-16 | 2015-11-16 | Restoration structure that hot -blast branch pipe expansion joint gas blowby of blast furnace turns red |
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| Publication Number | Publication Date |
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| CN205115516U true CN205115516U (en) | 2016-03-30 |
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| CN201520912812.3U Active CN205115516U (en) | 2015-11-16 | 2015-11-16 | Restoration structure that hot -blast branch pipe expansion joint gas blowby of blast furnace turns red |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576425A (en) * | 2017-09-29 | 2019-04-05 | 上海宝钢工业技术服务有限公司 | The rubescent processing method of blast furnace gooseneck position shell high temperature |
| CN115305303A (en) * | 2022-08-12 | 2022-11-08 | 重庆钢铁股份有限公司 | Repairing structure and repairing method for furnace body steel shell risk part |
-
2015
- 2015-11-16 CN CN201520912812.3U patent/CN205115516U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576425A (en) * | 2017-09-29 | 2019-04-05 | 上海宝钢工业技术服务有限公司 | The rubescent processing method of blast furnace gooseneck position shell high temperature |
| CN115305303A (en) * | 2022-08-12 | 2022-11-08 | 重庆钢铁股份有限公司 | Repairing structure and repairing method for furnace body steel shell risk part |
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| TR01 | Transfer of patent right |
Effective date of registration: 20170320 Address after: 200941 room W-95, No. 559 Luo Road, Shanghai, Baoshan District Patentee after: Shanghai Yao Yao Industrial Technology Service Co., Ltd. Address before: 200941 Shanghai Spring Road, No. 650, Baoshan District Patentee before: Upper Hypon is full of industrial furnace Engineering Co., Ltd |