CN116293653A - Method for repairing internal defect of boiler material returning device - Google Patents
Method for repairing internal defect of boiler material returning device Download PDFInfo
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- CN116293653A CN116293653A CN202310312334.1A CN202310312334A CN116293653A CN 116293653 A CN116293653 A CN 116293653A CN 202310312334 A CN202310312334 A CN 202310312334A CN 116293653 A CN116293653 A CN 116293653A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000007547 defect Effects 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 title abstract description 22
- 239000000945 filler Substances 0.000 claims abstract description 53
- 238000009413 insulation Methods 0.000 claims abstract description 41
- 238000005266 casting Methods 0.000 claims abstract description 20
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 17
- 238000005243 fluidization Methods 0.000 description 8
- 238000003763 carbonization Methods 0.000 description 7
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The application discloses a repair method for internal defects of a boiler material returning device, and relates to the technical field of boilers. The disclosed boiler material returning device comprises a shell, a heat insulation layer and a pouring layer, wherein the shell, the heat insulation layer and the pouring layer are sequentially overlapped and connected along the direction from the outside of the boiler material returning device to the inside of the boiler material returning device, and the disclosed repairing method comprises the following steps: confirming a target area of the shell, wherein a cavity is formed in an area, opposite to the target area, of the heat insulation layer, a gap is formed in an area, opposite to the target area, of the casting layer, and the gap is communicated with the cavity; a through hole is formed in the target area so that the through hole is communicated with the cavity; the grouting device is communicated with the through hole; starting a grouting device, and injecting heat insulation filler into the cavity; after the cavity is filled with the heat insulating filler, the grouting device is closed. According to the scheme, the problem that in the related art, the sealing box is additionally arranged in the red burning area of the shell of the boiler material returning device to seal the red burning area of the shell, so that the red burning area of the shell is difficult to radiate, and the shell is easy to carbonize and burn through is solved.
Description
Technical Field
The application belongs to the technical field of boilers, and particularly relates to a method for repairing internal defects of a boiler material returning device.
Background
Referring to fig. 1, an inner wall of a housing 10 of the boiler return feeder is overlapped with a heat insulation layer 20 and a pouring layer 30, after long-term operation, a crack 31 may appear in the pouring layer 30, fluidization wind inside the boiler return feeder easily flows along the crack 31 of the pouring layer 30, the heat insulation layer 20 with a loose structure drives the boiler return feeder to loose and fall off, a cavity 21 with a larger volume is formed between the pouring layer 30 and the housing 10, the fluidization wind temperature inside the boiler return feeder is higher, and the fluidization wind can flow in the crack 31 and the cavity 21 with burnt coal dust, so that the housing 10 heats up and burns red, and safety accidents may occur.
For safe operation of the boiler material returning device, the related art generally installs the sealing box 40 in the red burning area of the shell 10, and fills the casting material in the sealing box 40 to avoid the safety accident caused by the high temperature of the shell 10, however, after installing the sealing box 40 on the shell 10, the area covered by the sealing box 40 is difficult to dissipate heat, so that the area covered by the sealing box 40 of the shell 10 is high in duration, the carbonization burning of the shell 10 is easy to be caused, the safe operation of the boiler material returning device is affected, and the stop operation of the boiler material returning device is also possible to be caused.
Disclosure of Invention
The embodiment of the application aims to provide a repair method for internal defects of a boiler material returning device, which can solve the problems that in the related art, a sealing box is additionally arranged in a red burning area of a shell of the boiler material returning device to seal the red burning area of the shell, so that the red burning area of the shell is difficult to dissipate heat, and the shell is carbonized and burnt through.
In order to solve the technical problems, the application is realized as follows:
the application provides a repair method of internal defect of boiler return feeder, boiler return feeder includes shell, thermal insulation layer and casting layer, the shell, thermal insulation layer with the casting layer is followed the direction outside the boiler return feeder to in the boiler return feeder overlaps in proper order and links to each other, repair method includes:
confirming a target area of the shell, wherein a cavity is formed in an area, opposite to the target area, of the heat insulation layer, a gap is formed in an area, opposite to the target area, of the pouring layer, and the gap is communicated with the cavity;
a through hole is formed in the target area so that the through hole is communicated with the cavity;
communicating a grouting device with the through hole;
starting the grouting device, and injecting heat insulation filler into the cavity;
and closing the grouting device after the cavity is filled with the heat insulation filler.
In this application embodiment, set up the through-hole at the target area, through-hole and cavity intercommunication, use grouting device to pour into thermal-insulated filler into in the cavity through the through-hole, after thermal-insulated filler fills up the cavity, the fluidization wind can no longer be contacted with the target area for the temperature of target area drops, until natural cooling, and this kind of repair mode is difficult to influence the heat dissipation of target area, can enough accelerate the cooling rate of target area, can avoid the problem that the target area carbonization burning-through that the target area is difficult to heat conduction and leads to again. Therefore, in the related art, the sealing box is additionally arranged in the red burning area of the shell of the boiler material returning device to seal the red burning area of the shell, so that the heat dissipation of the red burning area of the shell is difficult, and the problem of shell carbonization burning-through is solved.
Drawings
FIG. 1 is a schematic view of a related art boiler return feeder with a seal box;
FIG. 2 is a flow chart of a method of repairing an internal defect of a boiler return disclosed in an embodiment of the present application;
fig. 3 is a schematic structural view of a boiler feedback device with a filler pipe and a switching valve according to an embodiment of the present application.
Reference numerals illustrate:
10-shell,
20-heat insulation layer, 21-cavity,
30-casting layer, 31-crack,
40-sealing box,
100-housing, 110-target area, 111-through hole,
200-heat insulation layer, 210-heat insulation layer, 220-heat insulation layer, 230-cavity,
300-casting layer, 310-first casting layer, 320-second casting layer, 330-gap,
400-material filling pipe,
500-on-off valve.
Detailed Description
Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
Referring to fig. 2 to 3, an embodiment of the present application discloses a method for repairing an internal defect of a boiler return, which may be a CFB (Circula ting Fluidized Bed ) boiler return. The disclosed boiler returning charge comprises a shell 100, a heat insulation layer 200 and a pouring layer 300, wherein the shell 100, the heat insulation layer 200 and the pouring layer 300 are sequentially overlapped and connected along the direction from the outside of the boiler returning charge to the inside of the boiler returning charge, that is, the heat insulation layer 200 is overlapped on the inner wall of the shell 100, and the pouring layer 300 is overlapped on the surface of the heat insulation layer 200, which is away from the shell 100.
The material of the shell 100 may be steel, the heat insulation layer 200 may include a heat insulation layer 210 and a heat insulation layer 220, the heat insulation layer 210 may be made of heat insulation cotton or other heat insulation materials, and the heat insulation layer 220 may be made of heat insulation materials. The casting layer 300 may include a first casting layer 310 and a second casting layer 320, where the first casting layer 310 may be made of a refractory wear-resistant casting material, and the second casting layer 320 may be made of a corundum wear-resistant casting material.
After the boiler return feeder operates for a long time, gaps 330 may appear in the pouring layer 300, the fluidization wind in the boiler return feeder flows along the gaps 330 of the pouring layer 300, the heat insulation layer 200 with a loose structure driving the boiler return feeder loosens and falls off, so that a cavity 230 with a larger volume is formed between the pouring layer 300 and the shell 100, and the boiler return feeder has internal defects.
For this reason, the repairing method disclosed in the embodiment of the present application includes:
s101, confirming the target area 110 of the shell 100. The region of the insulating layer 200 opposite to the target region 110 has a hollow 230, the region of the casting layer 300 opposite to the target region 110 has a slit 330, and the slit 330 communicates with the hollow 230.
The fluidized wind inside the boiler re-feeder will carry the burning coal dust to flow inside the gap 330, the cavity 230 and the boiler re-feeder (as shown in fig. 3, the arrow direction in fig. 3 indicates the flowing direction of the fluidized wind), and contact with the casing 100, resulting in gradual temperature rise of the casing 100 and even burning red, in this embodiment, the target area refers to the area where the temperature of the casing 100 is greater than the preset temperature.
The operator can confirm the target area 110 by visually checking whether the casing 100 is burned, and the burned area of the casing 100 can be confirmed as the target area 110.
S102, a through hole 111 is opened in the target area 110, so that the through hole 111 communicates with the cavity 230.
S103, communicating the grouting device with the through hole 111.
S104, starting the grouting device, and injecting heat insulation filler into the cavity 230.
Preferably, the uniform injection of the insulating filler into the cavity 230 is maintained, i.e., the amount of insulating filler delivered per unit time is constant.
Optionally, the heat insulation filler may include refractory mortar, where the temperature in the boiler return is higher, and the refractory mortar has smaller shrinkage after drying and baking, so that the problem that the heat insulation layer 200 or the casting layer 300 still has larger gap due to severe shrinkage of the heat insulation filler after drying and baking, thereby causing the fluidization wind to flow in the gap and causing the cavity 230 again can be alleviated.
S105, after the cavity 230 is filled with the heat insulation filler, the grouting device is closed.
In this embodiment of the present application, the through hole 111 is formed in the target area 110, the through hole 111 is communicated with the cavity 230, the grouting device is used to inject the heat insulation filler into the cavity 230 through the through hole, after the heat insulation filler fills the cavity 230, the fluidization wind cannot contact with the target area 110 any more, so that the temperature of the target area 110 is reduced until natural cooling, and the repairing mode is not easy to affect the heat dissipation of the target area 110, so that the cooling speed of the target area 110 can be increased, and the problem that the target area 110 is carbonized and burnt through due to difficult heat conduction of the target area 110 can be avoided. Therefore, in the related art, the sealing box is additionally arranged in the red burning area of the shell of the boiler material returning device to seal the red burning area of the shell, so that the heat dissipation of the red burning area of the shell is difficult, and the problem of shell carbonization burning-through is solved.
In addition, since the temperature of the target area 110 is high, if the solution in the related art is adopted, the sealing box 400 is installed on the housing 100, the larger the target area 110 is, the larger the volume of the sealing box 40 is, the more difficult the construction is, and the more consumables are consumed. In the embodiment of the application, the construction difficulty of forming the through hole 111 in the target area 110 is small, the consumable is also small, and the labor intensity of workers can be reduced.
The shell 100 is usually made of carbon steel, if the scheme in the related art is adopted, the shell 100 in the wrapping range of the sealing box 40 cannot dissipate heat, the temperature may be about 1000 ℃, the shell 100 in the wrapping range of the sealing box 40 is burnt at high temperature for a long time, the risk of carbonization burning-through exists, and when the subsequent treatment is carried out, the carbonization burning-through area of the shell 100 needs to be replaced or repaired, so that the repair cost is high. In the embodiment of the application, the heat dissipation of the target area 110 is not affected by injecting the heat insulation filler into the cavity 230, so that the problem of carbonization and burnthrough of the target area 110 can be relieved, the target area 100 is not required to be repaired and replaced, and the repair cost of the shell 100 is reduced.
In the related art, the manner of installing the sealing box 40 in the braised area of the casing 100 does not fill the cavity 230, the cavity 230 still exists, and there is a problem that the cavity 230 gradually expands, if the cavity 230 continues to expand, the braised area of the casing 100 also expands, if the braised area expands beyond the range covered by the sealing box 40, the sealing box 40 needs to be continuously installed, the operation process is complex, and the reliability is poor. The heat insulation filler fills the cavity 230 and the gap 330, so that the risk that fluidization wind blows into the heat insulation layer 200 is reduced, the problem that the cavity 230 is gradually enlarged is solved, and the processing reliability of a high-temperature area (also can be a red-burned area) of the shell 100 is improved.
The step of forming the through hole 111 in the target area 110 may include:
a1: a filler tube 400 is fixedly installed in the target area 110.
Alternatively, the filler tube 400 may be secured to the target area 110 by welding.
A2: a piercing tool is used to extend into the filler tube 400 and pierce the target area 110 to form the through-hole 111.
The filler pipe 400 communicates with the grouting device to achieve communication between the grouting device and the through hole 111. Alternatively, the puncture tool may be an electric welding machine, and the through hole 111 is formed in the target area 110 by electric welding, and of course, the puncture tool may also be an electric drill.
In this case, the through hole 111 and the grouting device are communicated through the communication between the filling pipe 400 and the grouting device, so that the grouting device does not need to be in direct contact with the target area 110, and the problem that the grouting device is thermally damaged due to the direct contact between the grouting device and the target area 110 with a high temperature can be relieved.
In a further aspect, the communicating the grouting device with the through hole 111 in the above step may further include:
b1: the on-off valve 500 is connected to a port of the filler pipe 400 facing away from the through hole 111. Alternatively, the on-off valve 500 may be a ball valve.
In the case where the filler pipe 400 is connected with the on-off valve 500, the step of opening the through hole 111 in the target area 110 may include: the on-off valve 500 is first installed to the filler pipe 400, then the filler pipe 400 is installed to the target area 110 (or the filler pipe 400 may be installed to the target area 110, then the on-off valve 500 is installed to the filler pipe 400), then the on-off valve 500 is opened, and then a piercing tool is sequentially passed through the inner hole of the on-off valve 500 and the filler pipe 400, and pierces the target area 110 to form the through hole 111.
B2: the on-off valve 500 is closed.
B3: the grouting pipe of the grouting device is communicated with the switching valve 500 so that the inlet of the switching valve 500 is communicated with the grouting pipe and the outlet of the switching valve 500 is communicated with the filler pipe 400.
In this case, the on-off valve 500 is closed first, so that it is possible to prevent the slurry pipe from being burned by the fluidizing air entering the slurry pipe along the slit 330, the hollow 230 and the filler pipe 400 in the process of communicating the slurry injecting device with the on-off valve 500. Meanwhile, after the injection of the heat insulation filler is completed, the grouting pipe and the switching valve 500 may be disassembled, the grouting pipe may be disassembled, and then the switching valve 500 may be closed to block the filler pipe 400.
In other embodiments, the on-off valve 500 may not be connected to the filler pipe 400, and may be directly connected to the grouting pipe of the grouting device through the filler pipe 400, and the filler pipe 400 may be plugged by using a plugging member after the heat-insulating filler is completely injected.
To achieve the connection of the filler tube 400 and the on-off valve 500, in an alternative embodiment, the filler tube 400 and the on-off valve 500 may be connected by a screw structure or welding, etc. In another alternative embodiment, the filler pipe 400 may be provided with a first screw structure, the switching valve 500 may be provided with a second screw structure, and the switching valve 500 and the filler pipe 400 may be connected by screw-fitting of the first screw structure and the second screw structure.
In order to realize connection of the on-off valve 500 and the grouting pipe, the on-off valve 500 may be provided with a third screw structure, the grouting pipe may be provided with a fourth screw structure, and the on-off valve 500 and the grouting pipe may be connected through screw-fit of the third screw structure and the fourth screw structure.
In this case, the installation of the on-off valve 500 and the filler pipe 400 is convenient and quick, and the repeated use of the on-off valve 500 is facilitated, and the communication between the on-off valve 500 and the grouting pipe is also relatively simple and easy to operate.
In the repair method disclosed in the embodiment of the present application, after the target area 110 is confirmed, the repair method may further include:
c1: a plurality of through holes 111 are formed in the target area 110, and the heights of the plurality of through holes 111 are different.
Wherein communicating the grouting device with the through hole 111 includes:
d1: each through hole 111 is in turn communicated with the grouting device in the direction from low to high.
In this case, when the area of the target area 110 is large, the through holes 111 may be connected to the grouting device one by one in the bottom-to-top direction (i.e., in the vertically upward direction), and the hollow 230 may be filled with the heat insulating filler, which helps to improve the grouting efficiency.
When the target area 110 is provided with a plurality of through holes 111, the filler pipe 400 and the on-off valve 500 are mounted to each through hole 111 of the target area 110.
In the above-described embodiment, in order to confirm the target area of the casing 100, the worker may look for the red-colored area of the casing 100 by visual inspection, and confirm the red-colored area as the target area 110.
In other embodiments, the patching method may further include, prior to validating the target area 110 of the enclosure 100:
d1: a plurality of temperature detectors are installed at intervals on the housing 100.
The temperature detector is a thermometer capable of detecting a high temperature.
D2: the target area 110 is confirmed according to the temperature detected by the temperature detector, and the area around the temperature detector having a temperature greater than the preset temperature is the target area 110.
In this case, the target area 110 of the housing 100 can be more accurately found, and the safety of the boiler re-feeder can be improved.
Further, the repairing method disclosed in the embodiment of the application may further include:
e1: each temperature detector is connected with an alarm, so that the temperature detectors and the alarms are in one-to-one correspondence.
E2: and under the condition that the temperature value detected by the temperature detector is larger than the preset temperature, controlling the corresponding alarm to send out an alarm signal.
Under the condition, the situation that the target area 110 is delayed to be found due to missed observation of the staff can be avoided, and potential safety hazards are caused, so that the safety of the boiler material returning device is improved, the staff does not need to pay attention to the boiler material returning device in real time, and the labor intensity of the staff is reduced.
The alarm and the temperature detector can be connected with the controller, the temperature detector transmits the detected temperature signal to the controller, and the controller controls the alarm to send an alarm signal under the condition that the temperature value detected by the temperature detector is larger than the preset temperature.
Optionally, the alarm may make the buzzer sound when the temperature value detected by the temperature detector is greater than a preset temperature. The alarm can also enable the lamp to emit light when the temperature detected by the temperature detector is greater than the preset temperature. Of course, the alarm may include both a buzzer and a lamp, and when the temperature value detected by the temperature detector is greater than the preset temperature, the corresponding buzzer sounds to attract the attention of the staff, and the corresponding lamp emits light, so that the staff can more quickly confirm the position of the target area 110.
The grouting device may include a hopper for storing the heat insulating packing and a grouting pump communicating the hopper with the through hole 111.
In the above steps, opening the grouting device may include:
f1: and starting the grouting pump.
The closing grouting device in the above step may include:
g1: the grouting pump is turned off.
In this case, the heat insulating filler can be injected into the cavity 230 more smoothly by the grouting pump.
In an alternative embodiment, the grouting pump may be connected with a pressure detector for detecting the pressure of the grouting pump, and the grouting pump is shut down in case that the pressure is larger than a first preset pressure. In this case, when the pressure is greater than the first preset pressure, it indicates that grouting is completed, or that the grouting pressure is too high, grouting can be performed at the position of the next through hole 111, so as to improve grouting efficiency.
In an alternative embodiment, a pressure detector is provided at the through hole 111 for detecting the pressure at the through hole 111, and in case the pressure is higher than a second preset pressure, the grouting device, i.e. the grouting pump, is turned off.
Under the condition that the pressure is larger than the second preset pressure, the grouting is finished, or the grouting pressure is overlarge, the grouting can be performed at the position of the next through hole 111, and the grouting device can be closed more timely, so that the grouting efficiency is improved.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (10)
1. A repair method of an internal defect of a boiler feedback device, wherein the boiler feedback device comprises a shell (100), a heat insulation layer (200) and a casting layer (300), the shell (100), the heat insulation layer (200) and the casting layer (300) are sequentially overlapped and connected along a direction from outside the boiler feedback device to inside the boiler feedback device, the repair method comprises the following steps:
identifying a target area (110) of the shell (100), wherein a cavity (230) is formed in an area of the heat insulation layer (200) opposite to the target area (110), a gap (330) is formed in an area of the casting layer (300) opposite to the target area (110), and the gap (330) is communicated with the cavity (230);
a through hole (111) is formed in the target area (110) so that the through hole (111) is communicated with the cavity (230);
communicating a grouting device with the through hole (111);
starting the grouting device, and injecting heat insulation filler into the cavity (230);
after the cavity (230) is filled with the insulating filler, the grouting device is closed.
2. The repair method according to claim 1, wherein the opening of the through hole (111) in the target area (110) comprises:
fixedly mounting a filler pipe (400) in the target area (110);
a piercing tool is used to extend into the filler tube (400) and pierce the target area (110) to form the through-hole (111).
3. The repair method according to claim 2, characterized in that said communicating the grouting device with the through hole (111) comprises:
and a port of the filling pipe (400) facing away from the through hole (111) is connected with a switch valve (500):
closing the on-off valve (500);
a grouting pipe of the grouting device is communicated with the switch valve (500) so that an inlet of the switch valve (500) is communicated with the grouting pipe and an outlet of the switch valve is communicated with the filler pipe (400).
4. A repair method according to claim 3, wherein the filler pipe (400) is provided with a first thread structure, the on-off valve (500) is provided with a second thread structure, and the on-off valve (500) and the filler pipe (400) are connected by a thread fit of the first thread structure and the second thread structure;
the on-off valve (500) is provided with a third thread structure, the grouting pipe is provided with a fourth thread structure, and the on-off valve (500) is connected with the grouting pipe through the thread matching of the third thread structure and the fourth thread structure.
5. The repair method according to claim 1, characterized in that after said confirming the target area (110) of the housing (100), the repair method further comprises:
a plurality of through holes (111) are formed in the target area (110), and the heights of the through holes (111) are different;
wherein said communicating the grouting device with the through hole (111) includes:
each through hole (111) is communicated with the grouting device in turn along the direction from low to high.
6. The repair method according to claim 1, characterized in that before confirming the target area (110) of the housing (100), the repair method further comprises:
a plurality of temperature detectors are installed on the housing (100) at intervals,
and confirming the target area (110) according to the temperature detected by the temperature detector, wherein the area around the temperature detector with the temperature greater than the preset temperature is the target area (110).
7. The repair method of claim 6, further comprising:
each temperature detector is connected with an alarm, so that the temperature detectors and the alarms are in one-to-one correspondence;
and under the condition that the temperature value detected by the temperature detector is larger than the preset temperature, controlling the corresponding alarm to send out an alarm signal.
8. A repair method according to claim 1, wherein the grouting device comprises a hopper for storing the heat insulating filler and a grouting pump communicating between the hopper and the through hole (111), the opening of the grouting device comprising:
starting the grouting pump;
the closing of the grouting device comprises:
and closing the grouting pump.
9. The repair method according to claim 8, wherein the grouting pump is connected with a pressure detector for detecting a pressure of the grouting pump, and the grouting pump is turned off in case that the pressure is greater than a preset pressure.
10. The repair method of claim 1, wherein the insulating filler comprises a refractory mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310312334.1A CN116293653A (en) | 2023-03-27 | 2023-03-27 | Method for repairing internal defect of boiler material returning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310312334.1A CN116293653A (en) | 2023-03-27 | 2023-03-27 | Method for repairing internal defect of boiler material returning device |
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| Publication Number | Publication Date |
|---|---|
| CN116293653A true CN116293653A (en) | 2023-06-23 |
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|---|---|---|---|
| CN202310312334.1A Pending CN116293653A (en) | 2023-03-27 | 2023-03-27 | Method for repairing internal defect of boiler material returning device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109000223A (en) * | 2018-06-14 | 2018-12-14 | 玉和建设有限公司 | A kind of material return device for circulating fluidized bed boiler part thermal insulation layer lining restorative procedure |
| CN109681863A (en) * | 2019-01-03 | 2019-04-26 | 青海盐湖工业股份有限公司 | A kind of feed back pipeline repair technology of circulating fluidized bed boiler |
| CN110529843A (en) * | 2019-09-04 | 2019-12-03 | 张选 | A kind of restorative procedure of material returner of fluidized-bed boiler heat preservation heat insulation layer failure |
| JP2021063628A (en) * | 2019-10-16 | 2021-04-22 | 住友金属鉱山株式会社 | Method for repairing seal pot of circulating fluidized bed boiler |
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2023
- 2023-03-27 CN CN202310312334.1A patent/CN116293653A/en active Pending
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| CN101525244A (en) * | 2009-03-26 | 2009-09-09 | 中钢集团洛阳耐火材料研究院有限公司 | Preparation method for middle density wear-resistant refractory casting material |
| CN105042581A (en) * | 2015-07-03 | 2015-11-11 | 内蒙古京泰发电有限责任公司 | Circulating fluidized bed boiler back feeder overtemperature heating on-line processing method |
| CN109000223A (en) * | 2018-06-14 | 2018-12-14 | 玉和建设有限公司 | A kind of material return device for circulating fluidized bed boiler part thermal insulation layer lining restorative procedure |
| CN109681863A (en) * | 2019-01-03 | 2019-04-26 | 青海盐湖工业股份有限公司 | A kind of feed back pipeline repair technology of circulating fluidized bed boiler |
| CN110529843A (en) * | 2019-09-04 | 2019-12-03 | 张选 | A kind of restorative procedure of material returner of fluidized-bed boiler heat preservation heat insulation layer failure |
| JP2021063628A (en) * | 2019-10-16 | 2021-04-22 | 住友金属鉱山株式会社 | Method for repairing seal pot of circulating fluidized bed boiler |
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