CN102192384B - Large-scale flange water leakage treatment method for lining rubber and lining brick equipment - Google Patents
Large-scale flange water leakage treatment method for lining rubber and lining brick equipment Download PDFInfo
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- CN102192384B CN102192384B CN201010116701.3A CN201010116701A CN102192384B CN 102192384 B CN102192384 B CN 102192384B CN 201010116701 A CN201010116701 A CN 201010116701A CN 102192384 B CN102192384 B CN 102192384B
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Abstract
The invention discloses a large-scale flange water leakage treatment method for lining rubber and lining brick equipment. The method is characterized by comprising the following steps of: a) detecting a flange gap, recording data and removing a flange connection bolt; b) increasing the flange gap by using a wedge and applied force, and cleaning the surface of a flange; c) filling an expanded polytetrafluoroethylene sealing tape and knocking firmly, and mounting the flange connection bolt; and d) removing the wedge and the applied force and fastening the flange connection bolt. The large-scale flange water leakage treatment method for the lining rubber and the lining brick equipment has the advantages that: leakage of the flange connection position of the lining rubber and the lining brick equipment is eliminated under the condition of not removing the whole equipment, overhauling efficiency of equipment is improved and overhauling cost of the equipment is reduced.
Description
Technical field
The present invention relates to the large-sized flange of resistance to heavy corrosion in a kind of chemical plant installations, specifically, is the large-sized flange water leakage treatment method of a kind of inner liner rubber, lining brick equipment.
Background technique
Preconcentrator is the nucleus equipment (see Fig. 1) of whole acid regeneration processing station, and it is the heat utilizing roasting oven reaction gas, is heated by spent acid to be processed, improves acid-spending strength, reduces the dust content in flue gas simultaneously.Preconcentrator shell adopts straight carbon steel to make, liner acid-proof rubber, thermoinsulation material and acidproof, temperature resistant brick.Preconcentrator forms primarily of the steam-water separator of epimere venturi, diffusing tube and hypomere, and height overall about 12 meters, each several part is formed by large-sized flange assembly and connection.
But, in the work progress installing preconcentrator, the flange bore connected due to each several part of preconcentrator is larger, during equipment making, surface processing accuracy own is poor, out-of-flatness region is larger, cause the not easy-to-use foot of bolt clipping forcee when installation process device bolton, in addition workmen lacks experience, after equipment installation terminates and before the construction of lining acid-resisting brick, do not have the installation of careful inspection equipment to seal situation, causing equipment acid-resisting brick to be constructed terminates in rear water flowing commissioning process, find that there is infiltration phenomenon at preconcentrator environment division adpting flange place, and preconcentrator is process spent acid (hydrochloric acid) when producing afterwards, if leak acid outside equipment later, flange bolt and the flange corrosion and damage of equipment will be made, serious consequence will be caused like this.
The part flange in Pre-concentrator apparatus rises has served as a contrast acid-resisting brick after installation terminates on inwall, if use known processing method, acid-resisting brick inside flange is all removed, change the seal washer of leak source, use balanced power clamp flange bolt again, and then the acid-resisting brick of dismounting is studied for a second time courses one has flunked, so not only increase construction cost, and easily make the anticorrosion glue-line of the lining of apparatus body be destroyed.
Therefore known preconcentrator equipment connection flange water seepage treatment method also exists above-mentioned all inconvenience and problem.
Summary of the invention
Object of the present invention, is that proposing a kind of process when preconcentrator equipment connection flange seeps water does not injure the inner liner rubber of equipment anticorrosion glue-line and acidproof brick layer, the large-sized flange loss zone technology of lining brick equipment.
For achieving the above object, technical solution of the present invention is:
A large-sized flange water leakage treatment method for inner liner rubber, lining brick equipment, is characterized in that comprising the following steps:
A) detection method your beautiful writings gap, record data, remove flange bolt
Go out the gap under original state between two flanged surfaces with angle seam dipstick metering, and carry out respective data record, then remove the whole bolts between two flanges, again detection method your beautiful writings gap record data; Distance between control flange seal face and flange bolt, if described distance is within the scope of 3-5mm, enters step b); If described distance is greater than 5mm, directly enter step c);
B) described flange gap is increased by chock and applied force, clean flange surface
With being not more than the chock of flange gap 2mm and applied force by the careful jack-up of two flanged surfaces, for the gap strictly controlling two flanged surfaces is no more than original interstice 2mm, the chock used must be processed into unified physical dimension, and the quantity of the chock increased between two flanges must how and ensure to prevent flange distortion when expanding, must increase uniformly on chock one by one when increasing external force, and after circle chock each increase external force terminates, the data of the gap expansion amount between two flange plate are measured with angle square, until when the gap between two flanges extends to close to 2mm, stop increasing external force, attention must not allow expansion amount in flange gap be greater than 2mm, in case acidproof brick layer leakproofness is pulled breakage, with thin wire and blade, hook careful for the pad in original flange is broken, remove the original pad of sub-fraction of the part that size does not meet the demands, the distance between described flange seal end face and flange bolt is made to be greater than 5mm, then pad is slowly torn dismounting, then use alcohol and clean cotton rag by the flange surface wiped clean between two flanges,
C) liner expanded PTFE (PTFE) sealing strip strike reality, mounting flange connecting bolt
The varicosity PTFE seal ring of the thick 2mm of off-the-shelf ratio two flange slot is cut into the size onesize with flange, tear binding tape protective paper off, described varicosity PTFE seal ring is entirely filled in the gap between two flanges, the two ends of described varicosity PTFE seal ring changes mutually in a bolt place intersection, each remaining more than 2cm beyond point of intersection, gently PTFE seal ring is beaten tightly with wooden chisel and hand hammer, strictly to control the dynamics of beaing when beaing, damage in case sealing strip is beaten or make the anticorrosion glue-line on cylinder inboard wall damaged sealing strip extruding;
D) chock and applied force is removed, clamp flange connecting bolt
All put on to all bolts of folder two flange, band upper cap nut, fills up the space between seal face and flange bolt with varicosity PTFE sealing strip.Then the chock for expanding two flange gaps and applied force jack is removed, and with torque spanner by fastening one by one according to the moment of the tight mode Uniform provisions in diagonal angle to all bolts wearing flange.
The large-sized flange water leakage treatment method of inner liner rubber of the present invention, lining brick equipment can also be further achieved by the following technical measures.
Aforesaid method, wherein at described step b) increase described flange gap by chock and applied force, in clean flange surface, described chock is the parallels chock being processed into unified physical dimension.
Aforesaid method, wherein at described step b) increase described flange gap by chock and applied force, in clean flange surface, described applied force is that jack produces power.
Aforesaid method, wherein said step b) increase flange gap with chock and jack, the chock used of clean flange surface does not allow expansion amount in flange gap be greater than 2mm, in case acidproof brick layer leakproofness is pulled breakage.
After adopting technique scheme, the large-sized flange water leakage treatment method of inner liner rubber lining brick equipment of the present invention has the following advantages:
1, when not overall pulling down equipment, the leakage at Flange joint position of inner line with rubber, lining brick equipment is eliminated;
2, overhaul of the equipments efficiency is improved;
3, significantly overhaul of the equipments cost is reduced.
Accompanying drawing explanation
Fig. 1 is the position view of the adpting flange of preconcentrator equipment;
Fig. 2 is the schematic diagram in the measurement two flange original state gap of the embodiment of the present invention;
Fig. 3 is the use applied force of the embodiment of the present invention and the schematic diagram in chock expansion flange gap;
Fig. 4 is the schematic diagram of the original pad of removal sub-fraction of the embodiment of the present invention;
Fig. 5 is the schematic diagram beaing tight PTFE seal ring of the embodiment of the present invention;
Fig. 6 is the schematic diagram filling up the space between seal face and flange bolt with varicosity PTFE sealing strip of the embodiment of the present invention.
In figure: 1 angle seam chi, 2 acid-resisting bricks, 3 original PTFE pads, 3a shifts out original PTFE pad, 4 anti-corrosion rubber lined layers, 5 bolts, 6 flanges, 7 leak source flanges, 8 cripples, 9 equipment slip joints, 10 preconcentrators, 11 wooden chisels, 12 varicosity PTFE sealing strips, 13 chocks, 14PTFE plate washer, F applied force.
Embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is illustrated further.
The large-sized flange water leakage treatment method of inner liner rubber of the present invention, lining brick equipment, comprises the following steps:
A) detection method your beautiful writings gap, record data, remove flange bolt
Now refer to Fig. 2, Fig. 2 is the schematic diagram in the measurement two flange original state gap of the embodiment of the present invention, as shown in the figure, the gap under original state between two flanged surfaces 6 is measured with described angle seam chi 1, and carry out corresponding data logging, then the bolt 5 between two flanges 6 is all removed, flange 6 gap is again detected and recorded data; Distance between control flange seal face and flange bolt, if the distance between described flange seal end face and flange bolt is within the scope of 3-5mm, enters next step b); If described distance is greater than 5mm, does not just need to remove the original PTFE sealing of part, directly enter step c);
B) described flange gap is increased by chock and applied force, clean flange surface
Fig. 3 is the use applied force of the embodiment of the present invention and the schematic diagram in chock expansion flange gap.The applied force F produced with the chock 13 and jack that are not more than flange gap 2mm is by the careful jack-up of two flanged surfaces, for the gap strictly controlling two flanged surfaces is no more than original interstice 2mm, the chock 13 used must be processed into unified physical dimension, and the quantity of the chock increased between two flanges must how and ensure to prevent flange distortion when expanding, must increase uniformly on chock one by one when increasing external force, and after circle chock 13 each increase external force terminates, the data of the gap expansion amount between two flange plate are measured with angle seam chi 1, until when the gap between two flanges 6 extends to close to 2mm, stop increasing external force, attention must not allow flange 6 gap expansion amount be greater than 2mm, in case acidproof brick layer leakproofness is pulled breakage.
Fig. 4 is the schematic diagram of the original pad of removal sub-fraction of the embodiment of the present invention.With thin wire and blade, hook careful for the pad 3 in original flange is broken, remove sub-fraction original PTFE pad 3a of the part that size does not meet the demands, the distance between described flange seal end face and flange bolt is made to be greater than 5mm, then pad 3a is slowly torn dismounting, then use alcohol and clean cotton rag by the flange surface wiped clean between two flanges;
C) liner varicosity PTFE sealing strip strike reality, mounting flange connecting bolt
Fig. 5 is the schematic diagram beaing tight PTFE seal ring of the embodiment of the present invention.The varicosity PTFE seal ring 12 of the thick 2mm in gap between off-the-shelf ratio two flange is cut into the size onesize with flange, tear binding tape protective paper off, described varicosity PTFE seal ring 12 is entirely filled in the gap between two flanges, the two ends of described varicosity PTFE seal ring changes mutually in a bolt place intersection, each remaining more than 2cm beyond point of intersection, gently PTFE seal ring is beaten tightly with wooden chisel 11 and hand hammer, strictly to control the dynamics of beaing when beaing, damage in case sealing strip is beaten or make the anticorrosion glue-line on cylinder inboard wall damaged sealing strip extruding;
D) chock and applied force is removed, clamp flange connecting bolt
Fig. 6 is the schematic diagram filling up the space between seal face and flange bolt with varicosity PTFE sealing strip of the embodiment of the present invention.All put on to all bolts of folder two flange, band upper cap nut, fills up the space between seal face and flange bolt with PTFE plate washer 14, varicosity PTFE sealing strip 12.Then the chock for expanding two flange gaps and applied force jack is removed, and with torque spanner by fastening one by one according to the moment of the tight mode Uniform provisions in diagonal angle to all bolts wearing flange.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or change.Therefore, all equivalent technological schemes also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1. a large-sized flange water leakage treatment method for inner liner rubber, lining brick equipment, is characterized in that comprising the following steps:
A) detection method your beautiful writings gap, record data, remove flange bolt
Go out the gap under original state between two flanged surfaces with angle seam dipstick metering, and carry out respective data record, then remove the whole bolts between two flanges, again detection method your beautiful writings gap record data; Distance between control flange seal face and flange bolt, if described distance is within the scope of 3-5mm, enters step b); If described distance is greater than 5mm, directly enter step c);
B) described flange gap is increased by chock and applied force, clean flange surface is with being not more than the chock of flange gap 2mm and applied force by the careful jack-up of two flanged surfaces, the chock used must be processed into unified physical dimension, and the quantity of the chock increased between two flanges must how and ensure to prevent flange distortion when expanding, must increase uniformly on chock one by one when increasing external force, and after circle chock each increase external force terminates, the data of the gap expansion amount between two flange plate are measured with angle square, until when the gap between two flanges extends to close to 2mm, stop increasing external force, with thin wire and blade, hook careful for the pad in original flange is broken, remove the original pad of sub-fraction, the distance between described flange seal end face and flange bolt is made to be greater than 5mm, then pad is slowly torn dismounting, then use alcohol and clean cotton rag by the flange surface wiped clean between two flanges,
C) liner expanded PTFE sealing strip strike reality, mounting flange connecting bolt
The expanded PTFE seal ring of the thick 2mm of off-the-shelf ratio two flange slot is cut into the size onesize with flange, described expanded PTFE seal ring is entirely filled in the gap between two flanges, the two ends of described expanded PTFE seal ring changes mutually in a bolt place intersection, beyond point of intersection, each remaining more than 2cm, beats teflin ring tightly gently with wooden chisel and hand hammer;
D) chock and applied force is removed, clamp flange connecting bolt
All put on to all bolts of folder two flange, band upper cap nut, the space between seal face and flange bolt is filled up with expanded PTFE sealing strip, then the chock for expanding two flange gaps and applied force is removed, and with torque spanner by fastening one by one according to the moment of the tight mode Uniform provisions in diagonal angle to all bolts wearing flange.
2. the large-sized flange water leakage treatment method of inner liner rubber as claimed in claim 1, lining brick equipment, is characterized in that, at described step b) increase described flange gap by chock and applied force, in clean flange surface, described chock is parallels chock.
3. the large-sized flange water leakage treatment method of inner liner rubber as claimed in claim 1, lining brick equipment, is characterized in that, at described step b) increase described flange gap by chock and applied force, in clean flange surface, described applied force is that jack produces power.
4. the large-sized flange water leakage treatment method of inner liner rubber as claimed in claim 1, lining brick equipment, it is characterized in that, described step b) increase flange gap with chock and jack, the chock used of clean flange surface does not allow expansion amount in flange gap be greater than 2mm, in case acidproof brick layer leakproofness is pulled breakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010116701.3A CN102192384B (en) | 2010-03-03 | 2010-03-03 | Large-scale flange water leakage treatment method for lining rubber and lining brick equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010116701.3A CN102192384B (en) | 2010-03-03 | 2010-03-03 | Large-scale flange water leakage treatment method for lining rubber and lining brick equipment |
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| Publication Number | Publication Date |
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| CN102192384A CN102192384A (en) | 2011-09-21 |
| CN102192384B true CN102192384B (en) | 2015-05-06 |
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| CN201010116701.3A Active CN102192384B (en) | 2010-03-03 | 2010-03-03 | Large-scale flange water leakage treatment method for lining rubber and lining brick equipment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103722859B (en) * | 2013-12-19 | 2015-12-30 | 上海金由氟材料股份有限公司 | A kind of preparation method of expanded PTFE gasket seal |
| CN104405999A (en) * | 2014-10-16 | 2015-03-11 | 甘肃银光化学工业集团有限公司 | Enamel equipment or pipeline leakage repairing method and scar nail |
| CN104498655B (en) * | 2014-12-29 | 2017-01-04 | 本钢板材股份有限公司 | The method of plugging damaged hot-blast valve flange Upper gasket |
| CN112879563B (en) * | 2021-01-13 | 2022-12-30 | 西安近代化学研究所 | Sealing device for compressing sealing ring to improve sealing performance by utilizing expansion pressure of liquid body |
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| CN2218865Y (en) * | 1995-05-05 | 1996-01-31 | 巩义市双龙大型管件厂 | Pipe blocking device |
| GB2296305A (en) * | 1994-12-22 | 1996-06-26 | North West Water Group Plc | Apparatus for and method of removing and replacing a pipeline component |
| CN2519879Y (en) * | 2001-12-20 | 2002-11-06 | 中国石化集团齐鲁石油化工公司 | Seal clamp for flange connection |
| JP2004017236A (en) * | 2002-06-18 | 2004-01-22 | Toho Gas Co Ltd | Flange leakage mending method |
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2010
- 2010-03-03 CN CN201010116701.3A patent/CN102192384B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2296305A (en) * | 1994-12-22 | 1996-06-26 | North West Water Group Plc | Apparatus for and method of removing and replacing a pipeline component |
| CN2218865Y (en) * | 1995-05-05 | 1996-01-31 | 巩义市双龙大型管件厂 | Pipe blocking device |
| CN2519879Y (en) * | 2001-12-20 | 2002-11-06 | 中国石化集团齐鲁石油化工公司 | Seal clamp for flange connection |
| JP2004017236A (en) * | 2002-06-18 | 2004-01-22 | Toho Gas Co Ltd | Flange leakage mending method |
Non-Patent Citations (1)
| Title |
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| 大型法兰泄露的带压封堵;阴生毅等;《应用技术》;19990331;第20卷(第3期);40-41页 * |
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| CN102192384A (en) | 2011-09-21 |
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