CN218032091U - Corrugated compensator repairing device - Google Patents

Abstract

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 bellows section and straight tube section, is equipped with the restoration pipe that is formed by connecting two at least pipe lamellas on the old bellows of its characterized in that, and every pipe lamella is including arranging the outlying straight tube lamella of bellows section of old bellows in to and arrange the outlying bellows lamella of straight tube section of old bellows in. 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

Technical Field

The utility model relates to a prosthetic devices, especially a corrugated compensator prosthetic devices belongs to the pipe-line transportation technology field.

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 radial displacement energy of the expansion of the hot blast branch pipe and the thermal elongation of the corrugated compensator in addition to the axial displacement energy of the hot blast branch pipe of the hot blast stove, 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.

An object of the utility model is to provide a corrugated compensator prosthetic devices.

The utility model discloses a following technical scheme accomplishes: 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 outwards-protruding corrugation, and reinforcing parts are respectively arranged on two sides of the corrugation, wherein the reinforcing parts are hollow reinforcing pipes into which cooling media are introduced or solid reinforcing pipes, so that the strength of the corrugated pipe flap is increased, and the service life of the corrugated pipe flap is prolonged.

The at least two pipe sections are connected into a repair pipe through the axial flange on the pipe sections and the bolts and nuts on the axial flange.

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, the thickness of the heat insulation layer is 30-60mm, so that the service life of the pipe valve is prolonged, and meanwhile, the heat insulation layer 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 repair pipe is characterized in that two ends of the repair pipe are respectively connected with the hot blast stove and a hot blast main pipe, two interfaces communicated with the outside are arranged at the joints, 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 and 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 the service life is equivalent to that of a newly replaced compensator under the condition of ensuring that the inner brickwork is not rapidly damaged.

Compared with the prior art, the utility model, have following advantage and effect: 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 planning and damping down time 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 replacement of a new corrugated compensator in the prior art needs 8-10 days, and meanwhile, the coated repair pipe has higher high-temperature resistance, high-pressure resistance and high-fatigue resistance and can be tightly combined with the old corrugated pipe, the cost is saved, the hot air 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.

Drawings

FIG. 1 is a top view of the structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

figure 3 is a block diagram of the adjustable tension rod of figure 1.

Detailed Description

The invention will be further described with reference to the following examples given in conjunction with the accompanying drawings.

Example 1

The utility model provides a corrugated compensator prosthetic devices, including setting up old bellows 4 between hot-blast furnace 1 and hot-blast main 3, this old bellows 4 includes bellows section 41 and straight tube 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 flanges corresponding to the hot blast stove 1 and the hot blast main pipe 3 through a radial flange and a bolt and a nut 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;

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.

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 communicated with the outside are arranged on the two ends of the repair pipe, the inlet pipe and the outlet pipe are respectively connected onto the two interfaces, 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.

Claims (7)

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 a 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 layer is made of 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. The corrugated compensator repairing device according to claim 1, wherein two ports for communicating with the outside are respectively arranged at the joints of the two ends of the repairing pipe and the hot blast stove and the hot blast main pipe, and the two ports are respectively connected with an inlet pipe and an outlet pipe.

Images