CN111451709A - Digging, replacing and repairing method for condenser shell connected air bag - Google Patents
Digging, replacing and repairing method for condenser shell connected air bag Download PDFInfo
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- CN111451709A CN111451709A CN202010170413.XA CN202010170413A CN111451709A CN 111451709 A CN111451709 A CN 111451709A CN 202010170413 A CN202010170413 A CN 202010170413A CN 111451709 A CN111451709 A CN 111451709A
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- air bag
- condenser
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- fastening belt
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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
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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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
Abstract
The invention discloses a method for digging, replacing and repairing a condenser shell connected air bag, which comprises the following steps: cutting a notch on the outer edge of the airbag of the damaged connected air bag by using an electric grinding wheel, inserting a fireproof flame-retardant material into the shell of the condenser from the notch to shield a copper pipe in the shell, and gradually cutting off the damaged connected air bag from the notch by using wind cutting; polishing and flattening the notch of the condenser shell with the connected gas bag cut off; manufacturing a new gas bag, and welding the new gas bag on the position of the condenser where the original connected gas bag is cut off; manufacturing a fastening belt, drilling a through hole on the fastening belt, and rolling and assembling the fastening belt on the outer edge of the air bag of the new air bag; manufacturing a plunger matched with the size of the through hole, and welding the plunger at the through hole; and testing the sealing performance of the condenser. The digging, replacing and repairing method of the conjoined air bag can dig, replace, weld and repair the conjoined air bag of the shell of the condenser, so that the condenser of the boiler can be repeatedly used, and the service life of the condenser is prolonged.
Description
Technical Field
The invention relates to the technical field of digging, replacing and repairing, in particular to a digging, replacing and repairing method for a condenser shell connected air bag.
Background
The condenser of the ship boiler is divided into an atmospheric condenser and a boiler condenser, the atmospheric condenser utilizes steam of a collecting boiler to heat fuel oil, a heating pipe inside an oil tank, steam to supply operation of a steam turbine and other equipment, and the boiler condenser utilizes the steam of the boiler to heat water for the life water of a crew and to warm a tank when a main engine is started.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a boiler condenser before repair according to an embodiment of the present invention; fig. 2 is a sectional view in the direction of a-a of the boiler condenser of fig. 1. The boiler condenser is provided with a shell 1, a connected air bag 2, a shell front end flange 31 and a shell rear end flange 32 which are respectively positioned at two ends of the shell 1, a liner front copper end surface 41 and a liner rear copper end surface 42 which are respectively positioned at two ends of the shell 1, a front end cover end surface 51 which is positioned outside the liner front end surface 41, a rear end cover end surface 52 which is positioned outside the liner rear end surface 42, and a seawater inlet 6 which is positioned on the front end cover end surface 51. Wherein, a plurality of thin-wall copper pipes 7 are closely distributed in the shell 1 of the boiler condenser, the inner part of the thin-wall copper pipe 7 is a water cavity, and the gaps between the shell 1 and each thin-wall copper pipe 7 and the gaps between the copper pipes 7 and the copper pipes 7 are air cavities. When steam is input into the air cavity inside the condenser shell 1, water in the water cavity inside the thin-wall copper tube 7 can be heated, so that water for crew, domestic heating, a main engine heating cylinder and the like can be supplied. In addition, the main experiment machine and various systems can be tested only by burning the boiler in the ship maintenance process, so that the boiler condenser is an important accessory of the boiler, and if the boiler condenser is damaged, steam leakage can be caused, and safety problems can be caused.
The conjoined gas bag 2 on the shell 1 of the boiler condenser is positioned on the outer circumference of one end of the shell 1 of the boiler condenser close to the steam inlet 11 upwards and is positioned between the shell 1 and the shell flange 31. This disjunctor gas bag 2 has certain gasbag height for the circumference outer wall of shell 1, and the gasbag outer fringe is half circular arc, even shell 1 makes out together wholly, and the effect of collecting the buffering when the inside intercommunication of inner chamber and shell plays the regulation steam high pressure and gets into can effectively protect the copper terminal surface and the contact surface at numerous thin wall copper pipe in the condenser inner bag the inside and both ends. Along with the extension of the service life of the boiler condenser, the conjoined gas bag 2 is continuously affected by the moist steam to generate rot, if local small-area rot can be repaired by repair welding or composite plates, and the thin-wall copper pipe 7 in the gas cavity is easily damaged during repair welding repair to cause water leakage of the water cavity, so that the boiler condenser is difficult to repair by the method when the conjoined gas bag 2 generates large-area rot, the boiler condenser needs to be integrally replaced, namely the shell 1, the conjoined gas bag 2 and the copper pipe inside the boiler are integrally replaced, if the copper pipe inside the condenser is intact, the whole replacement can cause resource waste, the long period of replacement and maintenance can affect the boiler ignition of the boiler, the debugging of various equipment facilities is affected, and meanwhile, the cost of ship repair can be increased to bring economic pressure to shipowners. In addition, no matter the integral gas bag is repaired by repair welding or the integral gas bag is replaced integrally, the bottom of the integral gas bag can deposit accumulated water formed by steam after long-term use, so that the integral gas bag is accelerated to be rotted and damaged, and the service life of the condenser is influenced.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings in the prior art and provide a digging, replacing and repairing method for a condenser shell connected air bag, which can dig, replace, weld and repair the corroded and damaged condenser shell connected air bag, so that a boiler condenser can be repeatedly used without integral replacement, and the service life of the dug and replaced new air bag is longer, thereby saving resources, shortening the ship repairing period, reducing the ship repairing cost and helping shippers save funds.
The invention is realized by the following technical scheme:
the method for digging, replacing and repairing the condenser shell connected air bag comprises the following steps:
cutting a notch on the outer edge of the airbag of the damaged connected air bag by using an electric grinding wheel, inserting a fireproof flame-retardant material into the shell of the condenser from the notch to shield a copper pipe in the shell, and gradually cutting off the damaged connected air bag from the notch by using wind cutting;
polishing and flattening the notch of the condenser shell with the connected gas bag cut off;
manufacturing a new gas bag, and welding the new gas bag on the position of the condenser where the original connected gas bag is cut off;
manufacturing a fastening belt, drilling a through hole in the fastening belt, assembling the fastening belt on the outer edge of the air bag of the new air bag in a rolling manner, and enabling the through hole of the fastening belt to be located at the lowest position of the bottom of the new air bag;
manufacturing a plunger matched with the size of the through hole, and welding the plunger at the through hole;
and testing the sealing performance of the condenser.
In an optional embodiment, when the damaged connected gas bag is cut off by using wind cutting, the wind cutting direction is adjusted in real time to enable wind cutting flame to avoid the copper pipe inside the shell, and the fireproof flame-retardant material is plugged into the interior of the shell of the condenser from the cut to shield the copper pipe inside the shell while cutting.
In an alternative embodiment, the method for making the new air bag comprises the following steps: manufacturing two mutually matched air bag bodies, wherein each air bag body is provided with an outer edge end and an inner edge end; the circumferential size of the outer edge end is matched with the corrugated outer edge size of the original connected air bag; the circumferential size of the inner edge end is matched with the inner diameter of the notch of the condenser shell; the outer edge end extends towards the inner edge end in a certain radian to form an air bag body.
In an alternative embodiment, the method for welding the new gas bag to the position where the original conjoined gas bag of the condenser is cut off comprises the following steps: the condenser is characterized in that the two air bag bodies are respectively cut into a plurality of air bag bodies in an equal dividing mode, the inner edge end of each air bag body of the same air bag body is sleeved on the inner side of the same cut of the condenser shell and welded, and the cut of each air bag body is welded and restored to be the air bag body.
In an alternative embodiment, the fastening tape is roll-fitted to the outer edge of the airbag of the new airbag by: and the fastening belt is rolled and covers the joint of the two air bag bodies and is welded and fixed, and the fireproof flame-retardant material is gradually removed from the inside of the shell while welding.
In an alternative embodiment, the width of the fastening strap is greater than the width of the gap between the two air bag bodies; the length of the fastening belt is matched with the outer circumference of the air bag of the original conjoined air bag.
In an alternative embodiment, when the fastening belt is covered and assembled at the joint of the two air bag bodies, the arc-shaped connecting part between the outer edge end and the inner edge end of the air bag body is knocked while assembling, so that the arc-shaped connecting part is perpendicular to the space between the shell of the condenser and the edge of the fastening belt.
In an optional embodiment, before the step of cutting a cut on the damaged connected gas bag by using an electric grinding wheel, a repairing platform is further manufactured, and a condenser to be repaired is placed and fixed on the repairing platform to keep the condenser stable; the repairing platform is formed by constructing a plurality of repairing supports, and the repairing platforms are respectively supported on the end face of the front end cover, the middle part of the shell and the end face of the rear end cover of the condenser.
The invention has the beneficial effects that: the problem of condenser disjunctor gas bag rotten steam and reveal is solved, can make condenser used repeatedly, the shell of condenser promptly, the copper alloy terminal surface, the end cover, shell flange and the inside thin wall copper pipe of densely covered can used repeatedly, need not to change whole condenser, and dig the new gas bag after changing because have the incomplete function of row, can pass through the through-hole with the ponding of deposit in new gas bag bottom and discharge, the life of new gas bag has been prolonged, thereby the life of boiler condenser has been prolonged, a large amount of copper pipes and the material of copper alloy terminal surface have been practiced thrift, resources are protected and not wasted, ship repair cycle has been shortened, simultaneously for the shipowner has practiced thrift a large amount of funds.
In addition, compared with the original conjoined air bag, the new air bag replaced by the method has the following advantages: decompression and gas storage are more superior, noise reduction is remarkably improved, the original gas bag fillet is refitted into a right angle, pressure absorption of convolution is achieved, the speed of convolution of steam is reduced, noise of the engine room is reduced, airflow speed is changed to be fast and slow, sound absorption and buffering effects of right-angled inner wall grooves on two sides are stronger, internal diversion gas leakage is slowed down, echo becomes not harsh, and no 'chller' sound is given out, so that noise generated by steam of the ship engine room is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a boiler condenser before repair according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the boiler of FIG. 1 taken in the direction of A-A;
FIG. 3 is a schematic structural view of a prosthetic stent according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a fresh air bag after repairing a boiler condenser according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The boiler is called as boiler condenser, the combustion of ship boiler is to generate steam, and the conversion of steam into kinetic energy requires a special device, that is, boiler condenser, through which the steam of boiler is collected, and the steam is used to heat water for crew and domestic water, and the main engine is started to warm the tank. The conjoined air bag on the boiler condenser is an important component, if the conjoined air bag on the condenser is damaged, the phenomenon of air leakage and water leakage can occur, and the whole boiler condenser needs to be repaired in time, and needs to be replaced integrally when the conjoined air bag on the condenser is serious. The application discloses a digging, replacing and repairing method of a ship boiler condenser, so that the boiler condenser can be repeatedly used without being integrally replaced, accumulated water can be discharged from a new air bag after digging and replacing to prevent bottom from being rotten, the service life is longer, resources are saved, the ship repairing period is shortened, and the maintenance fund is saved for shipowners.
The method for digging, replacing and repairing the condenser shell connected air bag comprises the following steps:
(1) cutting a notch on the outer edge of the airbag of the damaged connected air bag by using an electric grinding wheel, inserting a fireproof flame-retardant material into the shell of the condenser from the notch to shield a copper pipe in the shell, and gradually cutting off the damaged connected air bag from the notch by using wind cutting;
(2) polishing and flattening the notch of the condenser shell with the connected gas bag cut off;
(3) manufacturing a new gas bag, and welding the new gas bag on the position of the condenser where the original connected gas bag is cut off;
(4) manufacturing a fastening belt, drilling a through hole in the fastening belt, assembling the fastening belt on the outer edge of the air bag of the new air bag in a rolling manner, and enabling the through hole of the fastening belt to be located at the lowest position of the bottom of the new air bag;
(5) manufacturing a plunger matched with the size of the through hole, and welding the plunger at the through hole;
(6) and testing the sealing performance of the condenser.
In an optional embodiment, before the step of cutting a cut on the damaged connected gas bag by using the electric grinding wheel, a repairing platform is further manufactured, and a condenser to be repaired is placed and fixed on the repairing platform to keep the condenser stable; the repairing platform is formed by constructing a plurality of repairing supports, and the repairing platforms are respectively supported on the end face of the front end cover, the middle part of the shell and the end face of the rear end cover of the condenser.
Please refer to fig. 3, which is a schematic structural diagram of a repair bracket according to an embodiment of the present invention. The repair stand 90 includes a support leg 91 and a support portion 92, the support portion 92 having a circular arc support surface matching the circumference of the condenser case.
Specifically, unpack the heat preservation cotton and the iron sheet of parcel apart on the condenser shell, repair the platform according to the length preparation of condenser, repair the platform and include three repair support 90, repair support 90 and can select for use the angle steel material preparation to form. Since the mass of the condenser is usually heavy, which can generally reach 3 to 5 tons, the weight of the repair platform needs to be considered when the repair bracket 90 is manufactured, so as to ensure the construction safety in the repair process. The height of the repairing platform needs to be set according to the height of the condenser and the height required by construction, so that during repairing, workers can dig, replace and repair the condenser from various proper angles.
The boiler condenser to be repaired is hung on the repairing platform, so that the three repairing supports 90 are respectively supported on the front end cover end face, the middle part of the shell and the rear end cover end face of the condenser, and the front end cover end face, the middle part of the shell and the rear end cover end face are fixed on the repairing supports in a spot welding manner, so that the shell flanges (31 and 32) at two ends and the front copper rear end face 41 of the inner container and the looseness between the rear copper end face 42 of the inner container and the thin-wall copper pipe 7 are avoided after the integral gas bag 2 is cut off, the water leakage at the joint of the shell flanges (31 and 32) and the front and rear end faces (41 and 42) of the inner container, the water leakage at the joint of the thin-wall copper pipe 7 and the front and rear copper end faces (41 and 42.
In an optional embodiment, in the step (1), because the thin-wall copper pipe which is easy to damage inside the shell is directly cut by wind cutting, and because the two sides of the connected gas bag are inconvenient for the cutting operation of the electric grinding wheel, firstly, the electric grinding wheel is used for cutting a notch on the corrugated outer edge of the damaged connected gas bag, and the fireproof flame-retardant material is inserted into the shell of the condenser from the notch to shield the copper pipe inside the shell, so that the copper pipe is prevented from being cut, and meanwhile, welding slag is prevented from falling into the air inlet cavity. Then the whole damaged connected gas bag is cut off gradually from the cut by wind cutting, when the gas bag is cut off, the direction of wind cutting needs to be adjusted in real time to enable wind to cut flames to avoid the copper pipe inside the shell, the flames are prevented from hurting the thin-wall copper pipe, the fireproof flame-retardant material is plugged into the condenser shell from the cut to shield the copper pipe inside the shell, and when the temperature is too high, water can be sprayed on the fireproof flame-retardant material to reduce the temperature. The fireproof flame-retardant material can be fireproof cloth or asbestos cloth.
Please refer to fig. 4, which is a schematic structural diagram of a new air bag after repairing a boiler condenser according to an embodiment of the present invention.
In an alternative embodiment, in step (3), the method for making the new air bag 20 comprises:
two mutually matched air bag bodies are manufactured according to the size of the condenser shell, and the thickness of each air bag body is matched with that of the condenser shell and can be 5-8 mm. The air bag body is provided with an outer edge end and an inner edge end; the circumferential size of the outer edge end is matched with the size of the outer edge of the air bag of the original conjoined air bag; the circumferential size of the inner edge end is matched with the inner diameter of the notch of the condenser shell; the outer edge end extends towards the inner edge end in a certain radian to form an air bag body. The height of the air bag of the new air bag 20 is matched with that of the original conjoined air bag, and can be 40-60 mm.
In an alternative embodiment, the method for welding the new gas bag 20 to the position where the original connected gas bag of the condenser is cut off is as follows:
the condenser is characterized in that the two air bag bodies are respectively cut into a plurality of air bag bodies in an equal dividing mode, the inner edge end of each air bag body of the same air bag body is sleeved on the inner side of the same cut of the condenser shell and welded, and the cut of each air bag body is welded and restored to be the air bag body. Specifically, each air bag body can be equally divided into two air bag sub-bodies, and the inner edges of the two air bag sub-bodies are sleeved into the inner sides of the same cut of the condenser shell to be recovered to be in spot welding on the position of the original connected air bag of the condenser shell. In addition, each air bag body can be equally divided into other number of air bag sub-bodies according to requirements.
In the step (4), a fastening belt is manufactured, a through hole is drilled at the tail end of the fastening belt for residue removal, the fastening belt is rolled to cover and assemble at the joint of the two air bag bodies and is welded and fixed, and the fireproof flame-retardant material is gradually removed from the interior of the shell while welding.
The width of the fastening belt is larger than the width of a gap between the two air bag bodies; the length of the fastening belt is matched with the perimeter of the outer edge of the air bag of the original conjoined air bag; the thickness of the fastening belt can be 5-8 mm, and the manufacturing material can be flat iron or other materials.
With fastening area cover assembly in two gas bag body coupling during, make the through-hole be located the bottom minimum of new gas bag, limit assembly limit spot welding will put into inside fire prevention cloth or the asbestos cloth that shelters from the parcel copper pipe of shell simultaneously and remove gradually, avoid fire prevention cloth or asbestos cloth to leave over in the gas cavity.
During assembly, the tool is used for beating and attaching the fresh air bag from top to bottom along the side face of the fresh air bag in sequence, so that sundries can be conveniently cleaned out from the bottom folding part when the assembly is completed, and in addition, the phenomenon that the fastening belt deviates to cause too much or too little fastening belt on one side when the assembly is carried out until the bottom is folded is avoided.
Further, the arc-shaped connecting portion between the outer edge end and the inner edge end of the air bag body is knocked while assembling, so that the angles between the arc-shaped connecting portion and the outer edge end, and between the arc-shaped connecting portion and the inner edge end of the fresh air bag body 20 are right angles, even if the arc-shaped connecting portion is perpendicular to the space between the shell of the condenser and the edge of the fastening belt, so that the arc of the inner cavity and the outer body of the fresh air bag body 20 becomes a right angle, and the specific shape refers to fig. 4. Beating the arc-shaped connecting part at the outer side of the corrugation of the new air bag 20 into a right angle has the following advantages: the pressure that circles round absorbs, reduces the steam speed of circling round, reduces the noise in cabin, and the air current is rapid to become the slow speed, and sound absorption and buffering effect are more powerful in the right-angled inner wall groove in both sides, therefore the internal diversion leaks gas and slows down, and the echo becomes not harsh, can not send out the sound of "chller" again to reduce the noise that the steam of boats and ships cabin produced.
After the fastening belt is assembled, the new gas bag 20 and the outer shell are welded for a circle, and then the new gas bag 20 and the fastening belt are welded, wherein the welding method adopts carbon dioxide, argon tungsten-arc welding or manual electric arc welding.
And after the front part is welded, carrying out pressure test detection on the whole condenser to ensure that the repaired condenser meets the sealing performance requirement, and if the sealing detection does not pass, checking the air leakage hole again and repairing the air leakage hole. In the process of pressure test detection, sundries can be discharged through the through holes in the fastening belt, and the sundries are prevented from being left.
In the step (5), a plunger 80 matching the size of the through hole on the fastening tape may be manufactured, and the plunger 80 is inserted into the through hole and welded, and the sealing welding thereof is ensured. After the boiler condenser is used for a period of time, the plunger 80 can be taken down, and water is formed by steam at the bottom of the new gas bag and is discharged, so that the new gas bag is prevented from being rotten again due to long-time water accumulation, and the service life of the new gas bag is prolonged. The plunger 80 may be a dental plug with matching internal and external teeth, and the size of the plug is determined according to actual requirements.
The method for digging, replacing and repairing the condenser shell connected gas bag in the embodiment of the invention can ensure that the condenser can be repeatedly used, namely, the shell, the copper alloy end surface, the end cover, the shell flange and the thin-wall copper pipes densely distributed in the shell of the condenser can be repeatedly used, the whole condenser does not need to be replaced, the problem of rotten steam leakage of the condenser connected gas bag is solved, the dug and replaced new gas bag can remove accumulated water deposited at the bottom through the through holes, the bottom of the new gas bag is effectively prevented from rotting, the service life of the new gas bag is prolonged, the service life of the boiler condenser is prolonged, a large number of materials of the copper pipes and the copper alloy end surface are saved, resources are protected from being wasted, and a large amount of funds are saved for ship.
In addition, compared with the original conjoined air bag, the new air bag replaced by the method has the following advantages: decompression and gas storage are more superior, noise reduction is remarkably improved, the original gas bag fillet is refitted into a right angle, pressure absorption of convolution is achieved, the speed of convolution of steam is reduced, noise of the engine room is reduced, airflow speed is changed to be fast and slow, sound absorption and buffering effects of right-angled inner wall grooves on two sides are stronger, internal diversion gas leakage is slowed down, echo becomes not harsh, and no 'chller' sound is given out, so that noise generated by steam of the ship engine room is reduced.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. A method for digging, replacing and repairing a condenser shell connected air bag is characterized by comprising the following steps:
cutting a notch on the outer edge of the airbag of the damaged connected air bag by using an electric grinding wheel, inserting a fireproof flame-retardant material into the shell of the condenser from the notch to shield a copper pipe in the shell, and gradually cutting off the damaged connected air bag from the notch by using wind cutting;
polishing and flattening the notch of the condenser shell with the connected gas bag cut off;
manufacturing a new gas bag, and welding the new gas bag on the position of the condenser where the original connected gas bag is cut off;
manufacturing a fastening belt, drilling a through hole in the fastening belt, assembling the fastening belt on the outer edge of the air bag of the new air bag in a rolling manner, and enabling the through hole of the fastening belt to be located at the lowest position of the bottom of the new air bag;
manufacturing a plunger matched with the size of the through hole, and welding the plunger at the through hole;
and testing the sealing performance of the condenser.
2. The method for digging, replacing and repairing the condenser shell connected gas bag according to claim 1, wherein when the damaged connected gas bag is cut off by wind cutting, the wind cutting direction is adjusted in real time to enable wind cutting flame to avoid the copper pipe inside the shell, and the fireproof flame-retardant material is plugged into the condenser shell from the cut to shield the copper pipe inside the shell while cutting.
3. The method for digging, replacing and repairing the condenser shell connected air bag according to claim 1, wherein the method for manufacturing the new air bag comprises the following steps:
manufacturing two mutually matched air bag bodies, wherein each air bag body is provided with an outer edge end and an inner edge end; the circumferential size of the outer edge end is matched with the corrugated outer edge size of the original connected air bag; the circumferential size of the inner edge end is matched with the inner diameter of the notch of the condenser shell; the outer edge end extends towards the inner edge end in a certain radian to form an air bag body.
4. The method for digging, replacing and repairing the condenser shell connected gas bag according to claim 3, wherein the method for welding the new gas bag on the position where the original condenser connected gas bag is cut off comprises the following steps:
the condenser is characterized in that the two air bag bodies are respectively cut into a plurality of air bag bodies in an equal dividing mode, the inner edge end of each air bag body of the same air bag body is sleeved on the inner side of the same cut of the condenser shell and welded, and the cut of each air bag body is welded and restored to be the air bag body.
5. The method for repairing and digging a condenser shell connected air bag according to claim 4, wherein the method for assembling the fastening belt on the outer edge of the air bag of the new air bag in a rolling way is as follows:
and the fastening belt is rolled and covers the joint of the two air bag bodies and is welded and fixed, and the fireproof flame-retardant material is gradually removed from the inside of the shell while welding.
6. The method for digging, replacing and repairing the condenser shell connected air bag according to claim 4, wherein the width of the fastening belt is larger than the width of a gap between two air bag bodies; the length of the fastening belt is matched with the perimeter of the outer edge of the air bag of the original conjoined air bag.
7. The method for repairing and replacing a condenser shell connected air bag according to claim 5, wherein when the fastening belt is assembled at the joint of the two air bag bodies in a covering manner, the arc-shaped connecting part between the outer edge end and the inner edge end of the air bag body is knocked while assembling, so that the arc-shaped connecting part is perpendicular to the space between the shell of the condenser and the edge of the fastening belt.
8. The method for digging, replacing and repairing the condenser shell connected air bag according to claim 1, wherein before the step of cutting a cut on the damaged connected air bag by using an electric grinding wheel, a repairing platform is further manufactured, and the condenser to be repaired is placed and fixed on the repairing platform to keep the condenser stable; the repairing platform is formed by constructing a plurality of repairing supports, and the repairing platforms are respectively supported on the end face of the front end cover, the middle part of the shell and the end face of the rear end cover of the condenser.
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| CN106335522A (en) * | 2016-08-31 | 2017-01-18 | 天津电力机车有限公司 | Railway locomotive composite cooler restoration method |
| CN108480912A (en) * | 2018-05-31 | 2018-09-04 | 广州中船文冲船坞有限公司 | Welding repair method is changed in the digging of ironcasting |
| CN109108568A (en) * | 2018-09-12 | 2019-01-01 | 新疆科鼎环保科技有限公司 | High pressure valve leakage position restorative procedure |
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| JPH0849006A (en) * | 1994-08-04 | 1996-02-20 | Nittetsu Unyu Kk | Repairing of body shell of torpedo ladle |
| US6238187B1 (en) * | 1999-10-14 | 2001-05-29 | Lsp Technologies, Inc. | Method using laser shock peening to process airfoil weld repairs pertaining to blade cut and weld techniques |
| CN106271366A (en) * | 2016-08-29 | 2017-01-04 | 衢州元立金属制品有限公司 | The restorative procedure of sintering stirring hopper backing ring |
| CN106335522A (en) * | 2016-08-31 | 2017-01-18 | 天津电力机车有限公司 | Railway locomotive composite cooler restoration method |
| CN108480912A (en) * | 2018-05-31 | 2018-09-04 | 广州中船文冲船坞有限公司 | Welding repair method is changed in the digging of ironcasting |
| CN109108568A (en) * | 2018-09-12 | 2019-01-01 | 新疆科鼎环保科技有限公司 | High pressure valve leakage position restorative procedure |
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