CN115234743A - Corrugated compensator repairing device and repairing method thereof - Google Patents

Corrugated compensator repairing device and repairing method thereof Download PDF

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Publication number
CN115234743A
CN115234743A CN202210582808.XA CN202210582808A CN115234743A CN 115234743 A CN115234743 A CN 115234743A CN 202210582808 A CN202210582808 A CN 202210582808A CN 115234743 A CN115234743 A CN 115234743A
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CN
China
Prior art keywords
pipe
corrugated
hot blast
corrugated pipe
repair
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CN202210582808.XA
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Chinese (zh)
Inventor
柴正攀
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Wugang Group Kunming Iron and Steel Co Ltd
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Wugang Group Kunming Iron and Steel Co Ltd
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Priority to CN202210582808.XA priority Critical patent/CN115234743A/en
Publication of CN115234743A publication Critical patent/CN115234743A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
    • F16L55/172—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/028—Composition or method of fixing a thermally insulating material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/21—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for expansion-compensation devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)

Abstract

The invention provides a corrugated compensator repairing device and a repairing method thereof, wherein the corrugated compensator repairing device comprises an old corrugated pipe arranged between a hot blast stove and a hot blast main pipe, the old corrugated pipe comprises a corrugated pipe section and a straight pipe section, and the corrugated compensator repairing device is characterized in that the old corrugated pipe is provided with a repairing pipe formed by connecting at least two pipe flaps, and each pipe flap comprises a straight pipe flap arranged on the periphery of the corrugated pipe section of the old corrugated pipe and a corrugated pipe flap arranged on the periphery of the straight pipe section of the old corrugated pipe. The blast furnace can be used for planning the damping-down time, the repair pipe can be coated only in 24-48 hours without removing the old corrugated pipe with the fault, the repair time is greatly shortened, the corrugated compensator needs 8-10 days for replacing the corrugated compensator in the prior art, the coated repair pipe has good high-temperature resistance, compression resistance and fatigue resistance, and can be tightly combined with the old corrugated pipe, the cost is saved, the hot blast furnace is not influenced to normally provide high-temperature hot air for the blast furnace, and the normal smelting of the blast furnace is maintained.

Description

Corrugated compensator repairing device and repairing method thereof
Technical Field
The invention relates to a repairing device and a repairing method, in particular to a repairing device and a repairing method for a corrugated compensator, and belongs to the technical field of pipeline conveying.
Background
The corrugated compensator is a flexible, thin-walled and transversely corrugated telescopic compensation member, the telescopic elements of the corrugated compensator are mainly stainless steel corrugated pipes, and in the pipeline conveying process, the axial, radial and angular compensation is carried out on a conveying pipeline by depending on the expansion and bending of the stainless steel corrugated pipes, and the working principle is as follows: when the power and heat pipe expands due to the change of the temperature and pressure of the fluid in the power and heat pipe, the corrugated compensator absorbs the deformation energy of the pipe, so that the energy compensation is completed, and the accidents of cracking, even leakage and the like of the pipe due to rigid deformation are prevented, so that the corrugated compensator is widely applied to the industrial field. However, in practical production applications, especially in the metallurgical industry, such as when a corrugated compensator is applied to a hot blast branch pipe of a blast furnace hot blast stove, the corrugated compensator absorbs the axial displacement energy of the hot blast branch pipe of the hot blast stove, and also absorbs the radial displacement energy of the thermal elongation of the corrugated compensator and the expansion of the hot blast branch pipe, wherein: hot-blast branch pipe axial displacement can make intraductal refractory brick produce the effect of compressing tightly, and hot-blast branch pipe radial displacement can produce the shearing action to intraductal refractory brick, and this kind of shearing action is fairly unfavorable to refractory brick structure. In addition, when the hot blast stove is fired and used for supplying air, the air temperature fluctuation in the hot air branch pipe is large, the firebricks in the hot air branch pipe are easy to damage, particularly when the radial displacement of the hot air branch pipe compensator is large, if the radial displacement cannot be timely and effectively processed, the hot air branch pipe compensator can be damaged and leaked, the damaged hot air branch pipe compensator has to be stopped to maintain or replace, normal production is influenced, the firebricks need to be removed to complete welding of cracks and leaks during maintenance, and then the firebricks are laid again. Therefore, there is a need for improvements in the prior art.
Disclosure of Invention
The invention aims to solve the technical problems that: how to use less time and faster speed to repair the ripple compensator on the hot air branch pipe which has a fault or is about to have a fault on line under the temporary damping down state, thereby not influencing the normal supply of high-temperature hot air to a blast furnace by a hot air furnace and maintaining the smelting of the blast furnace.
A first object of the present invention is to provide a corrugated compensator repairing apparatus.
The second purpose of the invention is to provide a method for completing the repair of the corrugated compensator based on the corrugated compensator repairing device.
The first purpose of the invention is achieved by the following technical scheme: the utility model provides a ripple compensator prosthetic devices, including setting up the old bellows between hot-blast furnace and hot-blast main, this old bellows includes ripple pipeline section and straight tube section, be equipped with the restoration pipe that is formed by connecting two at least tube flaps on the old bellows of its characterized in that, every tube flap is including arranging the outlying straight tube flap of ripple pipeline section of old bellows in, and arrange the outlying ripple tube flap of straight tube section of old bellows in, so that through the restoration pipe that is formed by connecting two at least tube flaps, quick cladding is on the old bellows that breaks down or will break down soon, accomplish online restoration, from not influencing the hot-blast furnace and normally providing high-temperature hot-blast to the blast furnace, maintain blast furnace smelting.
The corrugated pipe flap is at least provided with one corrugation protruding outwards, the two sides of the corrugation are respectively provided with a reinforcing part, and the reinforcing part is a hollow reinforcing pipe in which a cooling medium is introduced or a solid reinforcing pipe so as to increase the strength of the corrugated pipe flap and prolong the service life.
And the at least two pipe flaps are connected into a repair pipe through the axial flanges on the pipe flaps and the bolts and the nuts on the axial flanges.
The at least two tube petals are axially welded into a repair tube.
The inner wall of the pipe valve is provided with a heat insulation layer made of high temperature resistant heat insulation materials with the thickness of 30-60mm, so that the service life of the pipe valve is prolonged, and the pipe valve is tightly coated on the old corrugated pipe.
The heat insulation materials are aluminum silicate fiber cotton and aerogel heat insulation felts, wherein the aluminum silicate fiber cotton is arranged on the inner wall of the straight pipe valve, the aerogel heat insulation felts are arranged on the inner wall of the corrugated pipe valve, and each layer of heat insulation material is bound by steel wires to prevent the heat insulation materials from being dislocated.
And two ends of the repairing pipe are respectively connected to the corresponding flanges of the hot blast stove and the hot blast main pipe through the radial flanges and the bolts and nuts on the radial flanges, or two ends of the repairing pipe are respectively connected with the hot blast stove and the hot blast main pipe through radial welding.
Between hot-blast furnace and the hot-blast main, be equipped with many axial regulation formula pull rods along the circumferencial direction, should adjust the formula pull rod including linking firmly first, the second connecting screw on hot-blast furnace and hot-blast main respectively, with first, the sleeve pipe of establishing the screw thread in it that second connecting screw is connected, and the internal thread spiral opposite direction at sleeve pipe both ends to it makes first, the second connecting screw is close to and accomplishes the take-up of pull rod to rotate the sleeve pipe forward, otherwise makes first, the second connecting screw is kept away from and accomplishes loosening of pull rod.
The second purpose of the invention is realized by the following technical scheme: a method for completing a corrugated compensator restoration based on the corrugated compensator restoration device, characterized by comprising the following steps:
A. a plurality of adjusting pull rods are arranged between the hot blast stove and the hot blast main pipe along the circumferential direction, and are adjusted to further axially tension an old corrugated pipe between the hot blast stove and the hot blast main pipe and simultaneously press refractory brickwork in the old corrugated pipe;
B. coating a heat insulation material layer on the old corrugated pipe;
C. coating at least two pipe flaps on a heat insulation material layer of an old corrugated pipe, arranging a straight pipe flap of each pipe flap at the periphery of a corrugated pipe section of the old corrugated pipe, arranging a corrugated pipe flap at the periphery of the straight pipe section of the old corrugated pipe, clamping the old corrugated pipe into a heat insulation layer through a heat insulation material layer, preventing the pipe flaps and the old corrugated pipe from moving mutually, and completing displacement compensation through the corrugated pipe flaps;
D. connecting and fixing at least two pipe flaps into a repair pipe through an axial flange of each pipe flap and a bolt and a nut on the axial flange, or axially welding at least two pipe flaps into the repair pipe;
E. the two sides of each corrugated pipe of the repair pipe are respectively provided with a hollow reinforced pipe which is filled with a cooling medium, and the deformation resistance of each corrugated pipe of the repair pipe is improved while each corrugated pipe is cooled; or a solid reinforced pipe is installed, so that the deformation resistance of each corrugated pipe of the repair pipe is improved;
F. the two ends of the repair pipe are respectively connected with the hot blast stove and the corresponding flanges of the hot blast main pipe through the radial flanges and the bolts and nuts on the radial flanges, or the two ends of the repair pipe are respectively connected with the hot blast stove and the hot blast main pipe through radial welding;
G. and C, adjusting the plurality of adjusting pull rods in the step A, loosening the tension of the hot blast stove and the hot blast main pipe, thereby completing the repair of the old corrugated pipe, compensating the expansion with heat and the contraction with cold through the repair pipe, and reducing the stress of the hot blast main pipe.
The heat insulation material layer in the step B is specifically as follows:
b1, coating a plurality of layers of aluminum silicate fiber cotton on the corrugated pipe section of the old corrugated pipe, coating one layer of aluminum silicate fiber cotton each time, and binding the aluminum silicate fiber cotton by using steel wires;
and B2, coating a plurality of layers of aerogel heat insulation felts on the straight pipe section of the old corrugated pipe, and binding the layers of aerogel heat insulation felts by using steel wires when each layer of aerogel heat insulation felt is coated.
And F, when two ends of the repair pipe are respectively connected with the hot blast stove and the hot blast main pipe, two interfaces communicated with the outside are reserved, and an inlet pipe and an outlet pipe are respectively connected onto the two interfaces, so that protective argon is introduced into the repair pipe through the inlet pipe, the outlet pipe and the corresponding interfaces, the safe connection of the repair pipe is facilitated, and the repair pipe is used as an inlet pipe interface and an outlet pipe interface for an air tightness test.
The maximum pressure born by the repair pipe is 0.6MPa, the maximum temperature is 350 ℃, the axial maximum displacement is 30mm, the radial maximum displacement is 50mm, the axial rigidity is 1051N/mm, the radial rigidity is 1256N/mm, the fatigue life can reach 3000 times, and under the condition that the interior brickwork is not rapidly damaged, the service life is equal to that of a newly replaced compensator.
Compared with the prior art, the invention has the following advantages and effects: by adopting the technical scheme, the repair pipe formed by connecting at least two pipe flaps can be conveniently coated on the old corrugated pipe which is not required to be dismounted and has a fault or is about to have a fault, the blast furnace design downtime is fully utilized, the online repair of the old corrugated pipe can be realized only by 24-48 hours, the repair time is greatly shortened, the corrugated compensator which is updated and renewed in the prior art needs 8-10 days, and meanwhile, the coated repair pipe has higher high-temperature resistance, compression resistance and fatigue resistance and can be tightly combined with the old corrugated pipe, the cost is saved, the hot blast stove is not influenced to normally provide high-temperature hot air for the blast furnace, and the normal smelting of the blast furnace is maintained.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a view of the adjustable tension rod of fig. 1.
Detailed Description
The invention is further described below with reference to the embodiments shown in the drawings.
Example 1
The invention provides a corrugated compensator repairing device, which comprises an old corrugated pipe 4 arranged between a hot blast stove 1 and a hot blast main pipe 3, wherein the old corrugated pipe 4 comprises a corrugated pipe section 41 and a straight pipe section 42, wherein: the old corrugated pipe 4 is provided with a repair pipe 2 formed by connecting two pipe flaps, and each pipe flap comprises two straight pipe flaps 21 arranged on the periphery of a corrugated pipe section 41 of the old corrugated pipe 4 and two corrugated pipe flaps 22 arranged on the periphery of a straight pipe section 42 of the old corrugated pipe 4;
each section of the corrugated pipe flap 22 is provided with a corrugation which protrudes outwards, the two sides of the corrugation are respectively provided with a reinforcing piece 6, and the reinforcing pieces 6 are hollow reinforcing pipes into which cooling media are introduced, so that the strength of the corrugated pipe flap is increased, and the service life is prolonged;
the two pipe flaps are connected into a repair pipe through an axial flange 24 on the two pipe flaps, and a bolt and a nut 25 on the axial flange 24; obviously, the two pipe flaps can also be axially welded into a repair pipe;
the inner wall of the pipe valve is provided with a heat insulation layer 23 which is made of conventional high-temperature-resistant heat insulation materials and has the thickness of 30-60mm, so that the service life of the pipe valve is prolonged, and the pipe valve is tightly coated on the old corrugated pipe 4;
the heat insulation material 23 is alumina silicate fiber cotton and aerogel heat insulation felt, wherein the alumina silicate fiber cotton is arranged on the inner wall of the straight pipe valve 21, the aerogel heat insulation felt is arranged on the inner wall of the corrugated pipe valve 22, and each layer of heat insulation material is bound by steel wires to prevent dislocation of the heat insulation material;
two ends of the repair pipe are respectively connected to the corresponding flanges of the hot blast stove 1 and the hot blast main pipe 3 through a radial flange on the repair pipe and a bolt and a nut on the radial flange; obviously, two ends of the repair pipe can also be respectively connected with the hot blast stove 1 and the hot blast main pipe 3 through radial welding;
a plurality of axial adjusting pull rods 5 are arranged between the hot blast stove 1 and the hot blast main pipe 3 along the circumferential direction, each adjusting pull rod 5 comprises a first connecting screw rod 51 and a second connecting screw rod 52 which are respectively fixedly connected on the hot blast stove and the hot blast main pipe, a sleeve 53 which is connected with the first connecting screw rod 51 and the second connecting screw rod 52 and is internally provided with threads, and the spiral directions of the internal threads at the two ends of the sleeve 53 are opposite, so that the sleeve is rotated forward to enable the first connecting screw rod 51 and the second connecting screw rod 52 to be close to and complete the tensioning of the pull rod, otherwise, the first connecting screw rods 51 and the second connecting screw rods 52 are far away to complete the loosening of the pull rod.
Example 2
The method for completing the corrugated compensator repair based on the corrugated compensator repair device comprises the following steps:
A. a plurality of adjusting pull rods 5 are arranged between the hot blast stove 1 and the hot blast main pipe 3 along the circumferential direction, the plurality of adjusting pull rods 5 are adjusted, then the old corrugated pipe 4 between the hot blast stove 1 and the hot blast main pipe 2 is tensioned axially, and meanwhile, the refractory brickwork in the old corrugated pipe 4 is compressed;
B. the old corrugated pipe 4 is coated with a heat insulation material layer 23, which comprises the following specific steps:
b1, coating a plurality of layers of aluminum silicate fiber cotton 23 on a corrugated pipe section 41 of the old corrugated pipe 4, coating each layer of aluminum silicate fiber cotton, and binding the aluminum silicate fiber cotton by using steel wires;
b2, coating a plurality of layers of aerogel heat insulation felts on the straight pipe section 42 of the old corrugated pipe 4, and binding each layer of aerogel heat insulation felt by using steel wires;
C. coating two tube flaps on a heat insulation material layer 23 of an old corrugated tube 4, placing a straight tube flap 21 of each tube flap at the periphery of a corrugated tube section 41 of the old corrugated tube 4, placing a corrugated tube flap 22 at the periphery of a straight tube section 42 of the old corrugated tube 4, clamping the old corrugated tube 4 into the heat insulation material layer 23 through the heat insulation material layer 23, preventing the corrugated tube flap 22, the straight tube flap 21 and the old corrugated tube 1 from moving mutually, and completing displacement compensation through the corrugated tube flaps;
D. connecting and fixing the two pipe flaps into a repair pipe through an axial flange 24 of each pipe flap and a bolt and a nut 25 on the axial flange; obviously, two pipe flaps can also be axially welded into a repair pipe;
E. the hollow reinforced pipes 6 which are filled with cooling medium are respectively arranged at the two sides of each corrugated pipe of the repair pipe, and the deformation resistance strength of each corrugated pipe of the repair pipe is improved while each corrugated pipe is cooled; obviously, a solid reinforced pipe can also be installed, so that the deformation resistance of each corrugated pipe of the repair pipe is improved;
F. two ends of the repair pipe are respectively connected to the flanges corresponding to the hot blast stove 1 and the hot blast main pipe 3 through the radial flange and the bolts and nuts on the radial flange; obviously, two ends of the repair pipe can be respectively connected with the hot blast stove 1 and the hot blast main pipe 3 through radial welding; meanwhile, when the two ends of the repair pipe are respectively connected with the hot blast stove 1 and the hot blast main pipe 3, two interfaces 71 and 72 communicated with the outside are reserved, and an inlet pipe and an outlet pipe are respectively connected to the two interfaces 71 and 72, so that protective argon is introduced into the repair pipe through the inlet pipe and the outlet pipe and the corresponding interfaces 71 and 72, the safe connection of the repair pipe is facilitated, and the repair pipe is used as an inlet pipe interface and an outlet pipe interface for an air tightness test;
G. adjusting the plurality of adjusting type pull rods 5 in the step A, loosening the hot blast stove 1 and the hot blast main pipe 3, thereby completing the repair of the old corrugated pipe 4, compensating the expansion with heat and the contraction with cold through the repair pipe, and reducing the stress of the hot blast main pipe.
The maximum pressure born by the repair pipe provided by the invention is 0.6MPa, the maximum temperature is 350 ℃, the axial maximum displacement is 30mm, the radial maximum displacement is 50mm, the axial rigidity is 1051N/mm, the radial rigidity is 1256N/mm, the fatigue life can reach 3000 times, and under the condition of ensuring that the inner brickwork is not rapidly damaged, the service life is equal to that of a newly replaced compensator.

Claims (10)

1. The corrugated compensator repairing device comprises an old corrugated pipe arranged between a hot blast stove and a hot blast main pipe, wherein the old corrugated pipe comprises a corrugated pipe section and a straight pipe section, and is characterized in that a repairing pipe formed by connecting at least two pipe flaps is arranged on the old corrugated pipe, and each pipe flap comprises a straight pipe flap arranged on the periphery of the corrugated pipe section of the old corrugated pipe and a corrugated pipe flap arranged on the periphery of the straight pipe section of the old corrugated pipe.
2. The corrugated compensator restoration device according to claim 1, wherein the corrugated pipe flaps are provided with at least one outwardly convex corrugation, and reinforcing members are provided on both sides of the corrugation, respectively, the reinforcing members being hollow reinforcing pipes into which a cooling medium is introduced or solid reinforcing pipes.
3. The corrugated compensator restoration device according to claim 1, wherein the at least two pipe segments are connected into a restoration pipe by an axial flange thereon and bolts and nuts on the axial flange; or the at least two tube flaps are axially welded into the repair tube.
4. The corrugated compensator restoration device according to claim 1, wherein the inner wall of the tube flap is provided with a thermal insulation layer with a thickness of 30-60mm; the heat insulation material is aluminum silicate fiber cotton and aerogel heat insulation felt, wherein the aluminum silicate fiber cotton is arranged on the inner wall of the straight pipe valve, the aerogel heat insulation felt is arranged on the inner wall of the corrugated pipe valve, and each layer of heat insulation material is bound by steel wires.
5. The corrugated compensator repairing device according to claim 1, wherein the two ends of the repairing pipe are respectively connected to the corresponding flanges of the hot blast stove and the hot blast main pipe through radial flanges and bolts and nuts thereon, or the two ends of the repairing pipe are respectively connected with the hot blast stove and the hot blast main pipe through radial welding.
6. The corrugated compensator repairing device according to claim 1, wherein a plurality of axial adjusting pull rods are arranged between the hot blast stove and the hot blast main pipe, each adjusting pull rod comprises a first connecting screw and a second connecting screw which are fixedly connected to the hot blast stove and the hot blast main pipe respectively, a sleeve which is connected with the first connecting screw and the second connecting screw and is internally provided with threads, and the threads of the internal threads at the two ends of the sleeve are opposite in spiral direction.
7. A method for completing the repair of a ripple compensator based on the ripple compensator repair apparatus of claim 1, comprising the steps of:
A. a plurality of adjusting pull rods are arranged between the hot blast stove and the hot blast main pipe along the circumferential direction, and are adjusted to further axially tension an old corrugated pipe between the hot blast stove and the hot blast main pipe and simultaneously press refractory brickwork in the old corrugated pipe;
B. coating a heat insulation material layer on the old corrugated pipe;
C. coating at least two pipe flaps on a heat insulation material layer of an old corrugated pipe, placing the straight pipe flap of each pipe flap at the periphery of the corrugated pipe section of the old corrugated pipe, placing the corrugated pipe flap at the periphery of the straight pipe section of the old corrugated pipe, clamping the old corrugated pipe into a heat insulation layer through the heat insulation material layer, preventing the pipe flaps and the old corrugated pipe from moving mutually, and completing displacement compensation through the corrugated pipe flaps;
D. connecting and fixing at least two pipe flaps into a repair pipe through an axial flange of each pipe flap and a bolt and a nut on the axial flange, or axially welding at least two pipe flaps into the repair pipe;
E. the two sides of each corrugated pipe of the repair pipe are respectively provided with a hollow reinforced pipe which is filled with a cooling medium, and the deformation resistance of each corrugated pipe of the repair pipe is improved while each corrugated pipe is cooled; or a solid reinforced pipe is arranged, so that the deformation resistance of each corrugated pipe of the repair pipe is improved;
F. the two ends of the repair pipe are respectively connected with the hot blast stove and the corresponding flanges of the hot blast main pipe through the radial flanges and the bolts and nuts on the radial flanges, or the two ends of the repair pipe are respectively connected with the hot blast stove and the hot blast main pipe through radial welding;
G. and C, adjusting the multiple adjustable pull rods in the step A, loosening the tension of the hot blast stove and the hot blast main pipe, thereby completing the repair of the old corrugated pipe, compensating the thermal expansion and the cold contraction through the repair pipe, and reducing the stress of the hot blast main pipe.
8. The method according to claim 7, characterized in that the layer of insulating material of step B is in particular:
b1, coating a plurality of layers of aluminum silicate fiber cotton on the corrugated pipe section of the old corrugated pipe, and binding each layer of aluminum silicate fiber cotton by using a steel wire;
and B2, coating a plurality of layers of aerogel heat insulation felts on the straight pipe section of the old corrugated pipe, and binding the layers of aerogel heat insulation felts by using steel wires when each layer of aerogel heat insulation felt is coated.
9. The method according to claim 7, wherein when the two ends of the repair pipe in step F are respectively connected with the hot blast stove and the hot blast main pipe, two interfaces communicated with the outside are reserved, and the two interfaces are respectively connected with an inlet pipe and an outlet pipe.
10. The corrugated compensator repairing device according to claim 1, wherein the repairing pipe bears the maximum pressure of 0.6MPa, the maximum temperature is 350 ℃, the axial maximum displacement is 30mm, the radial maximum displacement is 50mm, the axial stiffness is 1051N/mm, the radial stiffness is 1256N/mm, and the fatigue life can reach 3000 times.
CN202210582808.XA 2022-05-26 2022-05-26 Corrugated compensator repairing device and repairing method thereof Pending CN115234743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210582808.XA CN115234743A (en) 2022-05-26 2022-05-26 Corrugated compensator repairing device and repairing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210582808.XA CN115234743A (en) 2022-05-26 2022-05-26 Corrugated compensator repairing device and repairing method thereof

Publications (1)

Publication Number Publication Date
CN115234743A true CN115234743A (en) 2022-10-25

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Application Number Title Priority Date Filing Date
CN202210582808.XA Pending CN115234743A (en) 2022-05-26 2022-05-26 Corrugated compensator repairing device and repairing method thereof

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Country Link
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