CN113445777B - Method for renewing and reforming waste gas exhaust drum shift of pickling plant - Google Patents
Method for renewing and reforming waste gas exhaust drum shift of pickling plant Download PDFInfo
- Publication number
- CN113445777B CN113445777B CN202110786629.3A CN202110786629A CN113445777B CN 113445777 B CN113445777 B CN 113445777B CN 202110786629 A CN202110786629 A CN 202110786629A CN 113445777 B CN113445777 B CN 113445777B
- Authority
- CN
- China
- Prior art keywords
- exhaust pipe
- new exhaust
- new
- renewing
- reforming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
Abstract
The invention relates to a method for renewing and reforming an exhaust drum of waste gas of an acid washing factory, which comprises the following steps: constructing a foundation; secondly, assembling the new exhaust funnel on the ground; thirdly, a new exhaust pipe ground mounting bracket; fourthly, opening holes on the wall skin of the factory building; fifthly, rope threading is carried out at the opening of the hole; sixth, the new exhaust pipe is integrally lifted; welding a new exhaust pipe; (eight) removing the old exhaust pipe; (nine) new exhaust pipe joint construction; and (ten) picking cards and commissioning. The invention replaces the new exhaust barrel, removes the old exhaust barrel by using the repair time, greatly reduces the downtime of the unit, improves the economic benefit, adopts integral lifting installation, saves the lifting time compared with single-section lifting installation, and has higher practicability.
Description
Technical Field
The invention relates to the field of metallurgical construction, in particular to a method for renewing and reforming a waste gas exhaust barrel of an acid washing factory.
Background
At present, the waste gas exhaust pipe of the pickling plant is made of PPH materials, and after the waste gas exhaust pipe is used for many years, the waste gas exhaust pipe body is aged and needs to be replaced integrally. In the prior art, no method for updating and reforming the exhaust pipe is specially used. Therefore, a method for renewing and reforming the exhaust gas cartridge of the pickling plant is needed.
Disclosure of Invention
In order to overcome the technical defects and shortcomings, the invention provides a method for renewing and reforming the displacement of the waste gas exhaust drum of an acid washing factory, which reduces the downtime of a unit as much as possible and improves the construction efficiency when the exhaust drum is replaced and reformed.
The invention provides a method for renewing and reforming an exhaust funnel of waste gas of an acid washing factory building, which comprises the following steps:
and (one) foundation construction: performing reinforced concrete foundation construction;
and (II) assembling a new exhaust barrel ground: performing new exhaust pipe assembly work on the ground, and reserving an interface;
(III) new exhaust pipe ground mounting bracket: mounting at least 3 new exhaust pipe brackets on the new exhaust pipe on the ground;
and (IV) opening holes in the wall skin of the factory building: wall holes corresponding to the positions and the numbers of the new exhaust pipe brackets are formed in the wall skin at the inner side of the factory building, so that preparation is made for installing and welding the new exhaust pipe brackets;
and (V) rope threading at the opening: penetrating a rope from each wall hole at the inner side of the factory building, and binding a new exhaust pipe bracket corresponding to each rope firmly on the ground;
and (six) integrally hoisting a new exhaust barrel: the top end and the bottom end of the new exhaust pipe are lifted by two cranes at the same time, the whole new exhaust pipe is lifted to be about 1 meter away from the ground, the bottom end crane is kept stationary, and the top end crane lifts upwards, so that the whole new exhaust pipe is changed from a horizontal state to a vertical state;
welding a new exhaust pipe: after the new exhaust pipe is converted into a vertical state, the bottom crane slowly unloads force, then the hook of the bottom crane is removed, the top crane is used for hanging the new exhaust pipe to the position corresponding to the wall hole, and the new exhaust pipe support is fixed on the wall hole;
and (eight) removing the old exhaust pipe: removing the old exhaust pipe by using the fixed repair time;
and (ninth) new exhaust pipe joint construction: when the joint of the new exhaust pipe is repaired, the joint of the new exhaust pipe is connected by adopting an elbow, the elbow is pulled to the installation position, the flange connecting bolts at the two ends of the elbow are connected, the bolts are pre-tightened, and finally the final tightening is carried out after the position of the elbow is adjusted;
and (ten) picking cards and commissioning.
Preferably, the foundation construction sequence in the step (one) is as follows: foundation earthwork excavation, cushion layer construction, steel bar binding, bolt installation and positioning, template installation and fixation, concrete pouring, concrete curing, form removal and earthwork backfilling.
Preferably, the opening of the factory building wall skin in the step (four) comprises the following steps:
marking out hole positions on the wall skin by using marking pens according to a construction drawing, wherein the number of the holes is the same as that of the new exhaust pipe brackets, and the hole positions correspond to the installation positions of the new exhaust pipe brackets;
and (5) using a cutting machine to make holes on the wall skin at the marked positions.
Preferably, the welding the new exhaust pipe on the factory building in the step (seventh) includes the following steps:
the new exhaust funnel is positioned by the rope pulled at the inner side of the factory building and the top crane;
pulling the new exhaust pipe support to a hole-forming position, and binding and fixing the new exhaust pipe support and a factory building;
after the new exhaust pipe is in place, the top crane keeps still, then the new exhaust pipe brackets are welded respectively, and after the new exhaust pipe brackets are welded, the binding is released;
and slowly unloading the force of the top crane, and then removing the hook of the crane at the bottom end of the exhaust funnel.
Preferably, three-party confirmation is needed before the old exhaust pipe is dismantled in the step (eight), and the machine is stopped for hanging cards; when the exhaust pipe is removed, the main body part of the old exhaust pipe is divided into two sections for sectional removal; and when the segments are removed, a handheld cutting machine is adopted for cutting.
Preferably, in the new exhaust pipe interface in the step (nine), in order to reduce the downtime, the required tools and materials are prepared in advance, the installation tool is set in place, and the flange connection bolts and gaskets are confirmed in advance.
The embodiment of the invention has the following effects:
the method can greatly reduce the downtime of the unit and improve the economic benefit when the exhaust funnel is replaced and reformed. Meanwhile, the method adopts integral hoisting installation, and compared with single-section hoisting installation, the hoisting time is saved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art and are necessary are briefly described below, it being obvious that the drawings in the description below are only some embodiments of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic diagram of a new exhaust stack ground assembly structure of a method for shift renovation of an exhaust stack of an acid cleaning factory according to an embodiment of the present invention;
FIG. 2 shows a schematic diagram of mounting a bracket in a method for renewing and reforming an exhaust gas cartridge shift of an acid washing factory according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the positions of holes in a wall skin in a method for shifting, renewing and reforming an exhaust gas exhaust pipe of an acid washing factory according to an embodiment of the invention;
FIG. 4 shows a schematic diagram of a hole rope threading of a method for shifting, renewing and reforming an exhaust gas exhaust pipe of an acid washing factory building according to an embodiment of the invention;
fig. 5 is a schematic diagram of a new exhaust pipe of a method for shifting, renewing and reforming an exhaust pipe of an acid washing factory building according to an embodiment of the present invention;
fig. 6 shows a schematic diagram of the whole body being changed from a horizontal state to a vertical state when a new exhaust pipe of the method for shifting, renewing and reforming the exhaust pipe of the waste gas of the pickling plant disclosed by the embodiment of the invention is lifted;
fig. 7 shows a construction effect diagram of a method for renewing and reforming an exhaust pipe shift of an exhaust gas of an acid washing factory according to an embodiment of the invention.
Reference numerals: new aiutage support ZJ, wall hole QD, rope SZ, bottom crane DC1, top crane DC2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and examples, and it is apparent that the described examples are only some but not all examples of the present invention. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention, as all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, it will be understood that when an element is referred to as being "formed on" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
The invention discloses a method for updating and reforming an exhaust gas cylinder of an acid washing factory, which is disclosed by the invention and is characterized by comprising the following steps of:
and (one) foundation construction: and (3) performing reinforced concrete foundation construction, wherein the construction sequence is as follows: foundation earthwork excavation, cushion layer construction, steel bar binding, bolt installation and positioning, template installation and fixation, concrete pouring, concrete curing, form removal and earthwork backfilling.
And (II) assembling a new exhaust barrel ground: performing new exhaust pipe assembly work on the ground, and reserving an interface; fig. 1 shows a schematic diagram of a new exhaust pipe ground assembly structure of a method for modifying and shifting an exhaust pipe of an acid cleaning factory, in which in one embodiment, a new exhaust pipe main body is divided into four sections, and first, the exhaust pipe assembly work is performed on the ground and a joint is reserved.
(III) new exhaust pipe ground mounting bracket: installing at least 3 new exhaust pipe brackets ZJ on the new exhaust pipe on the ground; fig. 2 shows a schematic diagram of bracket installation of a method for renewing and reforming an exhaust gas exhaust pipe shift of an acid washing factory building according to an embodiment of the present invention; in one embodiment, the new chimney has three new chimney brackets ZJ, and the new chimney brackets ZJ are mounted on the new chimney on the ground.
And (IV) opening holes in the wall skin of the factory building: wall skin on the inner side of the factory building is provided with wall holes QD corresponding to the positions and the numbers of the new exhaust pipe brackets ZJ, so as to prepare for the installation and welding of the new exhaust pipe brackets ZJ; FIG. 3 is a schematic diagram showing the positions of holes in a wall skin of a method for carrying out displacement, update and reconstruction on an exhaust gas exhaust pipe of an acid washing factory building according to the embodiment of the invention; specifically, wall skin holes are formed in the inner side of the factory building, so that preparation is made for installing and welding a subsequent new exhaust pipe bracket ZJ. And (3) carrying out wall skin hole punching on the ZJ position of the new exhaust barrel support, marking the QD position of the wall skin hole punching by using a marker pen according to a construction drawing, and then carrying out wall skin hole punching by using a cutting machine.
And (V) rope SZ is threaded at the opening: penetrating a rope SZ from each wall hole QD at the inner side of the factory building, and binding a new exhaust barrel support ZJ corresponding to each rope SZ firmly on the ground; fig. 4 shows a schematic diagram of rope SZ penetrating through a hole of a method for updating and reforming an exhaust gas exhaust pipe shift of an acid washing factory according to an embodiment of the present invention; in one possible embodiment, 3 ropes SZ are respectively passed through 3 wall holes QD from the inner side of the factory building, and then the new exhaust pipe support ZJ corresponding to the 3 ropes SZ is firmly bound on the ground.
And (six) integrally hoisting a new exhaust barrel: the top end and the bottom end of a new exhaust pipe are lifted by two cranes at the same time, the whole new exhaust pipe is lifted to be about 1 meter away from the ground, the new exhaust pipe is kept stable, the bottom end crane DC1 is kept motionless, and the top end crane DC2 is lifted upwards, so that the whole new exhaust pipe is changed from a horizontal state to a vertical state; the whole hoisting installation is adopted, so that the hoisting time is saved compared with single-section hoisting installation. Because the whole new exhaust pipe is long, when the whole crane is used for hoisting, the new exhaust pipe body can be damaged if a single crane is used for hoisting, and therefore, two cranes are used for hoisting.
Fig. 5 is a schematic diagram of a new exhaust pipe of a method for shifting, renewing and reforming an exhaust pipe of an acid washing factory building according to an embodiment of the present invention; at this time, two cranes firstly lift simultaneously, and lift the whole exhaust funnel about 1 meter away from the ground, so as to keep stable. Fig. 6 shows a schematic diagram of the whole body being changed from a horizontal state to a vertical state when a new exhaust pipe of the method for shifting, renewing and reforming the exhaust pipe of the waste gas of the pickling plant disclosed by the embodiment of the invention is lifted; at this time, the bottom crane DC1 remains stationary, and the top crane DC2 lifts upward, so that the whole new exhaust stack is changed from a horizontal state to a vertical state.
Welding a new exhaust pipe: after the new exhaust pipe is converted into a vertical state, the bottom crane DC1 slowly unloads force, then the hook of the bottom crane DC1 is removed, the new exhaust pipe is hung to the position corresponding to the wall hole QD by using the top crane DC2, and the new exhaust pipe bracket ZJ is fixed on the wall hole QD; fig. 7 shows a construction effect diagram of a method for renewing and reforming an exhaust gas exhaust pipe shift of an acid washing factory building according to an embodiment of the invention. In one possible embodiment, 3 ropes SZ are pulled from the inside of the building to position the chimney in cooperation with a crane, a new chimney bracket ZJ is pulled to the installation position, and an iron wire is used to bind the bracket to the building structure. After the new exhaust pipe bracket ZJ is welded, the iron wires of the binding brackets are untied, and the large crane slowly unloads the force.
And (eight) removing the old exhaust pipe: removing the old exhaust pipe by using the fixed repair time; the old exhaust pipe is reserved when the new exhaust pipe is installed, the new exhaust pipe connector construction is carried out by utilizing the fixed repair time, the old exhaust pipe is removed, the downtime of the pickling factory set is greatly reduced, and the economic benefit is improved.
And (ninth) new exhaust pipe joint construction: when the joint of the new exhaust pipe is repaired, the joint of the new exhaust pipe is connected by adopting an elbow, the elbow is pulled to the installation position, the flange connecting bolts at the two ends of the elbow are connected, the bolts are pre-tightened, and finally the final tightening is carried out after the position of the elbow is adjusted; the old exhaust pipe is reserved when the new exhaust pipe is installed, the new exhaust pipe connector construction is carried out by utilizing the fixed repair time, the old exhaust pipe is removed, the downtime of the pickling factory set is greatly reduced, and the economic benefit is improved.
And (ten) picking cards and commissioning. Fig. 7 shows a construction effect diagram of a method for renewing and reforming an exhaust gas exhaust pipe shift of an acid washing factory building according to an embodiment of the invention.
Preferably, the foundation construction sequence in the step (one) is as follows: foundation earthwork excavation, cushion layer construction, steel bar binding, bolt installation and positioning, template installation and fixation, concrete pouring, concrete curing, form removal and earthwork backfilling.
Preferably, the opening of the factory building wall skin in the step (four) comprises the following steps:
marking out hole positions on the wall skin by using marking pens according to construction drawings, wherein the number of the holes is the same as that of the new exhaust pipe brackets ZJ, and the hole positions correspond to the installation positions of the new exhaust pipe brackets ZJ;
and (5) using a cutting machine to make holes on the wall skin at the marked positions.
Preferably, the welding the new exhaust pipe on the factory building in the step (seventh) includes the following steps:
the rope SZ is pulled on the inner side of the factory building and matched with the top crane DC2 to position a new exhaust barrel;
pulling the new exhaust pipe bracket ZJ to a hole-opening position, and binding and fixing the new exhaust pipe bracket ZJ and a factory building;
after the new exhaust pipe is in place, the top crane DC2 is kept still, then the new exhaust pipe brackets ZJ are welded respectively, and after the welding of the new exhaust pipe brackets ZJ is finished, the binding is released;
the top crane DC2 slowly unloads force, and then the hook of the crane DC1 at the bottom end of the exhaust funnel is removed.
Preferably, three-party confirmation is needed before the old exhaust pipe is dismantled in the step (eight), and the machine is stopped for hanging cards; when the exhaust pipe is removed, the main body part of the old exhaust pipe is divided into two sections for sectional removal; and when the segments are removed, a handheld cutting machine is adopted for cutting. The old exhaust pipe main body is removed in sections, so that the problem that the old exhaust pipe is seriously corroded is solved, the old exhaust pipe can be scattered in the lifting process, and the weight of the old exhaust pipe can be reduced by the sectional removal. When in segmentation, the flange bolts are cut off by adopting a handheld cutting machine, and the oxygen acetylene can not be adopted for cutting, so that fire is prevented from happening.
Preferably, in the new exhaust pipe interface in the step (nine), in order to reduce the downtime, the required tools and materials are prepared in advance, the installation tool is set in place, and the flange connection bolts and gaskets are confirmed in advance.
In summary, the invention discloses a method for updating and reforming the displacement of an exhaust gas drum of an acid washing factory, which utilizes the fixed repair time to remove the old exhaust gas drum, greatly reduces the downtime of a machine set, improves the economic benefit, saves the hoisting time compared with the single-section hoisting installation by adopting the integral hoisting installation, and has higher practicability.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The method for renewing and reforming the displacement of the waste gas exhaust drum of the pickling plant is characterized by comprising the following steps of:
and (one) foundation construction: performing reinforced concrete foundation construction;
and (II) assembling a new exhaust barrel ground: performing new exhaust pipe assembly work on the ground, and reserving an interface;
(III) new exhaust pipe ground mounting bracket: mounting at least 3 new exhaust pipe brackets on the new exhaust pipe on the ground;
and (IV) opening holes in the wall skin of the factory building: wall holes corresponding to the positions and the numbers of the new exhaust pipe brackets are formed in the wall skin at the inner side of the factory building, so that preparation is made for installing and welding the new exhaust pipe brackets;
and (V) rope threading at the opening: penetrating a rope from each wall hole at the inner side of the factory building, and binding a new exhaust pipe bracket corresponding to each rope firmly on the ground;
and (six) integrally hoisting a new exhaust barrel: the top end and the bottom end of the new exhaust pipe are lifted by two cranes at the same time, the whole new exhaust pipe is lifted to be about 1 meter away from the ground, the bottom end crane is kept stationary, and the top end crane lifts upwards, so that the whole new exhaust pipe is changed from a horizontal state to a vertical state;
welding a new exhaust pipe: after the new exhaust pipe is converted into a vertical state, the bottom crane hook is removed, the new exhaust pipe is lifted to the corresponding wall hole position by using the top crane, the new exhaust pipe support is fixed on the wall hole, specifically, the pull rope at the inner side of the factory building is matched with the top crane to position the new exhaust pipe, the new exhaust pipe support is pulled to the hole position, the new exhaust pipe support is bound and fixed with the factory building, the top crane is kept motionless after the new exhaust pipe is positioned, the new exhaust pipe supports are respectively welded, after the new exhaust pipe supports are welded, the binding is released, the top crane slowly removes the force, and then the hook at the bottom of the exhaust pipe is removed;
and (eight) removing the old exhaust pipe: removing the old exhaust pipe by using the fixed repair time;
and (ninth) new exhaust pipe joint construction: when the joint of the new exhaust pipe is repaired, the joint of the new exhaust pipe is connected by adopting an elbow, the elbow is pulled to the installation position, the flange connecting bolts at the two ends of the elbow are connected, the bolts are pre-tightened, and finally the final tightening is carried out after the position of the elbow is adjusted;
and (ten) picking cards and commissioning.
2. The method for renewing and reforming the exhaust gas cartridge shift of the pickling plant according to claim 1, wherein the foundation construction sequence in the step (a) is as follows: foundation earthwork excavation, cushion layer construction, steel bar binding, bolt installation and positioning, template installation and fixation, concrete pouring, concrete curing, form removal and earthwork backfilling.
3. The method for renewing and reforming the exhaust gas exhaust pipe shift of the pickling plant according to claim 1, wherein the step (four) of opening the wall skin of the plant comprises the following steps:
marking out hole positions on the wall skin by using marking pens according to a construction drawing, wherein the number of the holes is the same as that of the new exhaust pipe brackets, and the hole positions correspond to the installation positions of the new exhaust pipe brackets;
and (5) using a cutting machine to make holes on the wall skin at the marked positions.
4. The method for renewing and reforming the exhaust gas cartridge shift of the pickling plant according to claim 1, wherein the old exhaust gas cartridge in the step (eight) is confirmed by three parties before being dismantled, and the machine is stopped for hanging a card; when the exhaust pipe is removed, the main body part of the old exhaust pipe is divided into two sections for sectional removal; and when the segments are removed, a handheld cutting machine is adopted for cutting.
5. The method for renewing and reforming the exhaust gas cartridge of pickling plant according to claim 1, wherein in order to reduce the downtime during the construction of the new exhaust gas cartridge interface in step (nine), the required tools and materials are prepared in advance, the installation tool is set in place, and the flange connection bolts and gaskets are confirmed in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786629.3A CN113445777B (en) | 2021-07-12 | 2021-07-12 | Method for renewing and reforming waste gas exhaust drum shift of pickling plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110786629.3A CN113445777B (en) | 2021-07-12 | 2021-07-12 | Method for renewing and reforming waste gas exhaust drum shift of pickling plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113445777A CN113445777A (en) | 2021-09-28 |
| CN113445777B true CN113445777B (en) | 2023-09-15 |
Family
ID=77815975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110786629.3A Active CN113445777B (en) | 2021-07-12 | 2021-07-12 | Method for renewing and reforming waste gas exhaust drum shift of pickling plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113445777B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738861A (en) * | 2013-12-19 | 2014-04-23 | 国家电网公司 | Integral hoisting method for A type column of steel pipe of ultra-high voltage transformer station |
| CN104420694A (en) * | 2013-08-21 | 2015-03-18 | 五冶集团上海有限公司 | General mounting method for benzene hydrogenation engineering tower equipment |
| CN107190990A (en) * | 2017-06-02 | 2017-09-22 | 北京首钢建设集团有限公司 | Factory building steel column installation method under a kind of confined space |
| CN110159057A (en) * | 2019-05-24 | 2019-08-23 | 中国二十二冶集团有限公司 | Technological transformation workshop chimney construction method of installation |
| CN110937096A (en) * | 2019-10-14 | 2020-03-31 | 广州文冲船舶修造有限公司 | Ship chimney desulfurization modification process |
| CN110963408A (en) * | 2019-11-30 | 2020-04-07 | 中石化重型起重运输工程有限责任公司 | Hoisting method for replacing high-altitude vertical equipment |
| CN112696083A (en) * | 2020-12-20 | 2021-04-23 | 北京首钢建设集团有限公司 | Chimney installation method in limited area |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2987374B2 (en) * | 1995-12-28 | 1999-12-06 | 五洋建設株式会社 | Column material erecting method and device |
-
2021
- 2021-07-12 CN CN202110786629.3A patent/CN113445777B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420694A (en) * | 2013-08-21 | 2015-03-18 | 五冶集团上海有限公司 | General mounting method for benzene hydrogenation engineering tower equipment |
| CN103738861A (en) * | 2013-12-19 | 2014-04-23 | 国家电网公司 | Integral hoisting method for A type column of steel pipe of ultra-high voltage transformer station |
| CN107190990A (en) * | 2017-06-02 | 2017-09-22 | 北京首钢建设集团有限公司 | Factory building steel column installation method under a kind of confined space |
| CN110159057A (en) * | 2019-05-24 | 2019-08-23 | 中国二十二冶集团有限公司 | Technological transformation workshop chimney construction method of installation |
| CN110937096A (en) * | 2019-10-14 | 2020-03-31 | 广州文冲船舶修造有限公司 | Ship chimney desulfurization modification process |
| CN110963408A (en) * | 2019-11-30 | 2020-04-07 | 中石化重型起重运输工程有限责任公司 | Hoisting method for replacing high-altitude vertical equipment |
| CN112696083A (en) * | 2020-12-20 | 2021-04-23 | 北京首钢建设集团有限公司 | Chimney installation method in limited area |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113445777A (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101659082B (en) | System for integral binding and integral hoisting of steel bar framework of box beam and construction method thereof | |
| CN113387267B (en) | Safe hoisting and lowering method for underground diaphragm wall reinforcement cage | |
| CN101476410A (en) | Mounting and demounting method roof plate formwork support platform of concrete silo | |
| CN206692235U (en) | A kind of steel structure dome lifts by crane erecting device | |
| CN111287185A (en) | Cast-in-place pile head breaking method based on BIM | |
| CN113445777B (en) | Method for renewing and reforming waste gas exhaust drum shift of pickling plant | |
| CN114575589A (en) | Construction method for lifting template of electric hoist of steel reinforced concrete structural column | |
| CN110158675A (en) | Outer wall of basement anti-side bracing reinforcement system and its construction method in reconstruction project | |
| CN113338333A (en) | Quick mounting method for steel beam plate under cover-excavation top-down condition | |
| CN101264845A (en) | Crown block high altitude integrated suspension transposition construction method | |
| CN108999413A (en) | A method of roof purline being installed using single hoist cable more gib heads | |
| CN209907222U (en) | Novel reinforcing bar installation appurtenance | |
| CN211712490U (en) | Pipeline well pipeline hoisting device | |
| CN211143121U (en) | Prefabricated rail top air duct structural unit | |
| CN210685282U (en) | Prefabricated rail top air duct assembly structure | |
| CN108644471B (en) | Pipeline sliding transportation structure system on large-area water area and construction method thereof | |
| CN215905751U (en) | Indoor hoisting auxiliary tool | |
| CN112554082A (en) | Method for hoisting newly-added pile foundation reinforcement cage in narrow space under bridge reinforcement bridge | |
| CN217300501U (en) | Novel pipe well installation device matched with winch for use | |
| CN117585597B (en) | Jacking installation conversion device and method for different tower body sections of tower crane | |
| CN214541832U (en) | Transformer stores up oil tank cabinet foot structure | |
| CN211143757U (en) | A anchor that is used for shaped steel formula of encorbelmenting platform wire rope of unloading | |
| CN218595881U (en) | Tool convenient for hoisting round pipe culvert | |
| CN214192283U (en) | Large-diameter pipe jacking lifting device | |
| CN217412895U (en) | Traction device for raise boring pipeline construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |