A blast furnace gas pipeline

Abstract

The present invention relates to a blast furnace gas pipeline, which includes a blast furnace gas pipe and a fixing platform detachably installed on the outer surface of the blast furnace gas pipe. A limiting transmission unit is arranged on the outer surface of the fixing platform. The limiting transmission unit includes a double-strand limiting rod arranged on the outer surface of the fixing platform, and a limiting track is fixedly installed on the top surface of the double-strand limiting rod and at the top edge position of the double-strand limiting rod. In the present invention, three groups of fixing platforms are respectively moved to the positions where cutting and replacement are required at the joints of the blast furnace gas pipes. The fixing platforms are slid on the surface of the double-strand limiting rod, and the limiting track and the semi-circular sliding strip are wrapped on the outer surface of the blast furnace gas pipe. At the same time, the output end of the motor is rotated, thereby pushing the semi-circular sliding strip to rotate around the blast furnace gas pipe as the center point on the inner wall surface of the limiting track, and the cutting machine on the inner wall surface of the semi-circular sliding strip is lapped on the surface of the blast furnace gas pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipes, and in particular to a blast furnace gas pipeline. Background Art

[0002] While iron and steel plants' blast furnaces produce iron and steel products, they are also accompanied by a large amount of by-product blast furnace gas. This part of the gas contains combustible gases such as carbon monoxide, as well as particulate matters such as dust. The gas temperature is in the range of 150 - 250°C, and the gas pressure is in the range of 0.15 - 0.25 MPa. After the blast furnace gas is purified, it can be transported to the industrial furnaces of the iron and steel plant for use as a gas fuel.

[0003] Regarding the existing technology, there are the following problems: The turning points of the existing blast furnace gas pipelines are connected in the "saddle mouth" manner. This connection method not only increases the flow velocity resistance, resulting in low gas pressure and inability to meet user requirements, but also continuously erodes the pipe wall during the gas flow, making the pipe wall thinner, thereby reducing the service life of the gas pipeline. And the existing device stops the transportation of the gas pipeline, and then cuts the "saddle mouth" at the turning point of the pipeline and replaces it with a "flare" of DN900. However, when the pipeline is cut and the flare is replaced, a certain amount of gas will remain inside the pipeline and on the inner wall surface. When the pipeline is cut, the friction between the cutting tool and the metal pipeline will generate extremely high temperatures, and the friction between the metals will generate sparks. The sputtering of the sparks will cause the gas inside the pipeline to burn, and then lead to the problem of pipeline explosion. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that a lot of gas still remains inside the pipeline after stopping the gas infusion in the prior art, so that when the pipeline is cut and the pipeline opening is replaced, the sparks or high temperatures generated by the cutting machine cutting the metal are extremely likely to ignite the gas inside the pipeline.

[0005] To solve the above technical problems, the present invention provides a blast furnace gas pipeline, including a blast furnace gas pipe and a fixing platform detachably installed on the outer surface of the blast furnace gas pipe. A limiting transmission unit is arranged on the outer surface of the fixing platform. The limiting transmission unit includes a double-strand limiting rod arranged on the outer surface of the fixing platform. A limiting track is fixedly installed on the top surface of the double-strand limiting rod and at the top edge position of the double-strand limiting rod. Two groups of semi-circular sliding strips are movably lapped on the inner wall surface of the limiting track. A motor movably lapped on the outer surface of the semi-circular sliding strips is arranged on the outer surface at the top of the limiting track. A cutting machine is detachably installed at the middle position inside the first semi-circular sliding strip, and a clamping fixing plate is detachably installed on the outer surface of the second semi-circular sliding strip;

[0006] A water pump is fixedly installed on the outer surface of the fixed table, and a hollow sprinkler strip arranged at the output end of the water pump is fixedly installed on the outer surface of the limit track.

[0007] In an embodiment of the present invention, hydraulic plates and limit collars are symmetrically and fixedly installed on the two side surfaces of the limit track respectively, and the output end of the hydraulic plate is movably sleeved on the inner wall surface of the limit collar.

[0008] In an embodiment of the present invention, docking grooves are arranged on the two end surfaces of the first semi-circular slide bar, and docking protrusions movably sleeved on the inner wall surfaces of the docking grooves are arranged on the outer surfaces of the two ends of the second semi-circular slide bar.

[0009] In an embodiment of the present invention, an extension bar is fixedly connected to the outer surface of the limit track, and a threaded rod is movably sleeved on the outer surface of the extension bar.

[0010] In an embodiment of the present invention, a limit sleeve is movably sleeved by hinge at one end of the threaded rod, and a fitting soft plate movably lapped on the outer surface of the blast furnace gas pipe is fixedly connected to the outer surface of the limit sleeve.

[0011] In an embodiment of the present invention, a hydraulic rod is fixedly installed on the outer surface of the clamping fixing plate, an F-shaped clamping arm is fixedly connected to the output end of the hydraulic rod, and a slide rod is movably sleeved on the outer surface of the F-shaped clamping arm.

[0012] In an embodiment of the present invention, an elastic wire arranged at one end of the slide rod is fixedly connected to the inner wall surface of the F-shaped clamping arm, and an extrusion push plate is fixedly connected to one end of the slide rod.

[0013] In an embodiment of the present invention, grinding strips are fixedly connected to the outer surface of the extrusion push plate and the inner wall surface of the F-shaped clamping arm, and arc-shaped grooves are arranged on one side surface of the grinding strips.

[0014] In an embodiment of the present invention, an irrigation machine is fixedly installed on the outer surface of the clamping fixing plate, and one end of the irrigation machine passes through the F-shaped clamping arm and extends to the side edge position of the extrusion push plate.

[0015] In an embodiment of the present invention, a diversion chute is arranged at the position of one end of the irrigation machine on the outer surface of the extrusion push plate.

[0016] The above technical solutions of the present invention have the following advantages compared with the prior art:

[0017] The blast furnace gas pipeline described in the present invention moves three sets of fixed platforms to the positions where the blast furnace gas pipes need to be cut and replaced at the intersection of the blast furnace gas pipes, and the fixed platforms slide on the surfaces of the double-strand limit rods to wrap the limit rails and the semicircular sliding strips on the outer surface of the blast furnace gas pipes, and at the same time cooperate with the output end of the motor to rotate, thereby pushing the semicircular sliding strips to rotate on the inner wall surface of the limit rails with the blast furnace gas pipes as the center point, and cooperate with the cutting machine on the inner wall surface of the semicircular sliding strips to overlap the surface of the blast furnace gas pipes. When the semicircular sliding strips rotate, the cutting knife on the output end of the cutting machine gradually deepens the cutting depth, so that the sparks generated when the cutting machine cuts the surface of the blast furnace gas pipe can be greatly isolated on the outer surface of the blast furnace gas pipe, so as to avoid the cutting knife directly penetrating the surface of the blast furnace gas pipe when the cutting machine cuts the blast furnace gas pipe, so that the sparks will be directly transmitted to the inside of the blast furnace gas pipe when the cutting machine cuts, thereby causing the sparks and high temperature to ignite the residual gas inside the blast furnace gas pipe.

[0018] The blast furnace gas pipeline described in the present invention, when the cutting machine performs all-round rotation cutting on the surface of the blast furnace gas pipe, the water pump is used to infuse clean water into the inside of the water sprinkling hollow strip. After the clean water penetrates the water sprinkling hollow strip, it will be directly sprayed on the surface of the blast furnace gas pipe. The continuous contact between the water source and the blast furnace gas pipe will quickly cool the surface of the blast furnace gas pipe, and the sprayed water source will form a layer of covering net, which can greatly reduce the sparks generated when the cutting machine cuts the blast furnace gas pipe. After the cutting knife gradually deepens the cutting depth, the cutting knife on the output end of the cutting machine will directly penetrate the blast furnace gas pipe. When the cutting knife enters the inside of the blast furnace gas pipe, the external water source will enter the inside of the blast furnace gas pipe together with the gap cut by the cutting machine, thereby reducing the sparks generated by the friction between the cutting knife and the blast furnace gas pipe, and achieving the effect of gradually deepening the depth between the cutting knife and the blast furnace gas pipe by rotation, thereby isolating a large number of sparks generated by the friction between the cutting knife and the blast furnace gas pipe on the outer surface of the blast furnace gas pipe.

[0019] A blast furnace gas pipeline described in the present invention moves three groups of fixing tables to the positions where the blast furnace gas pipes are connected and need to be cut and replaced, and the fixing tables are slid on the surface of the double-strand limit rods to wrap the limit rails and the semicircular sliding strips on the outer surface of the blast furnace gas pipes, and the threaded rods are moved on the surface of the extension strips toward the blast furnace gas pipes, so that the fitting soft board on one end of the limiting sleeve fits on the surface of the blast furnace gas pipe, and the length of the threaded rods is used to extend to fix blast furnace gas pipes of different sizes, and then the length of the cutting machine is extended to make the cutting knife on the output end of the cutting machine overlap on the surface of the blast furnace gas pipe for cutting, thereby achieving the effect of extending the length of the threaded rods to extend and overlap blast furnace gas pipes of different sizes to fix the blast furnace gas pipes. Brief Description of the Drawings

[0020] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to specific embodiments of the present invention in conjunction with the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a schematic perspective sectional structure diagram of the blast furnace gas pipe in the present invention;

[0023] Figure 3 is a schematic perspective expanded structure diagram of the fixing table in the present invention;

[0024] Figure 4 is a schematic perspective exploded structure diagram of the fixing table in the present invention;

[0025] Figure 5 is a schematic perspective structure diagram of the clamping fixing plate in the present invention;

[0026] Figure 6 is a schematic perspective side view structure diagram of the clamping fixing plate in the present invention;

[0027] Figure 7 is a schematic perspective structure diagram of the limiting track in the present invention.

[0028] Explanation of the reference numerals in the drawings: 11, blast furnace gas pipe; 12, fixing table; 121, double-strand limiting rod; 122, limiting track; a1, extension bar; a2, threaded rod; a3, limiting sleeve; a4, fitting soft plate; a5, water pump; a6, sprinkling hollow bar; 123, hydraulic plate; 124, limiting collar; 125, motor; 126, semi-circular sliding bar; 127, docking groove; 128, docking projection; 129, cutting machine; 1210, clamping fixing plate; c1, hydraulic rod; c2, F-shaped clamping arm; c3, elastic wire; c4, sliding rod; c5, extrusion push plate; c6, grinding bar; c7, arc groove; c8, diversion chute; c9, irrigation machine. Detailed Embodiments

[0029] The following further describes the present invention in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited do not limit the present invention.

[0030] Refer to Figure 1 - Figure 7As shown in the figure, a blast furnace gas pipeline of the present invention includes a blast furnace gas pipe 11 and a fixed platform 12 detachably installed on the outer surface of the blast furnace gas pipe 11. A limit drive unit is provided on the outer surface of the fixed platform 12. The limit drive unit includes a double-strand limit rod 121 provided on the outer surface of the fixed platform 12. At the top surface of the double-strand limit rod 121 and at the top edge position of the double-strand limit rod 121, a limit track 122 is fixedly installed. Two groups of semi-circular slide bars 126 are movably lapped on the inner wall surface of the limit track 122. A motor 125 movably lapped on the outer surface of the semi-circular slide bar 126 is provided on the outer surface at the top of the limit track 122. A cutting machine 129 is detachably installed at the middle position on the inner side of the first semi-circular slide bar 126. A clamping fixing plate 1210 is detachably installed on the outer surface of the second semi-circular slide bar 126;

[0031] A water pump a5 is fixedly installed on the outer surface of the fixed platform 12. A sprinkling hollow strip a6 provided at the output end of the water pump a5 is fixedly installed on the outer surface of the limit track 122.

[0032] When the limit drive unit provided by the present invention is in use, the three fixed platforms 12 are respectively moved to the positions where the blast furnace gas pipes 11 need to be cut and replaced at the joints. Cooperating with the fixed platform 12 to slide on the surface of the double-strand limit rod 121, the limit track 122 and the semi-circular slide bar 126 are wrapped on the outer surface of the blast furnace gas pipe 11. At the same time, cooperating with the rotation of the output end of the motor 125, the semi-circular slide bar 126 is pushed to rotate around the blast furnace gas pipe 11 as the center point on the inner wall surface of the limit track 122. Cooperating with the cutting machine 129 on the inner wall surface of the semi-circular slide bar 126 to lap on the surface of the blast furnace gas pipe 11. When the semi-circular slide bar 126 rotates, the cutting depth is gradually increased by the cutting knife at the output end of the cutting machine 129, so that the sparks generated when the cutting machine 129 cuts the surface of the blast furnace gas pipe 11 can be greatly isolated on the outer surface of the blast furnace gas pipe 11, avoiding the cutting knife of the cutting machine 129 directly penetrating the surface of the blast furnace gas pipe 11 when cutting the blast furnace gas pipe 11, and the sparks directly entering the interior of the blast furnace gas pipe 11 when the cutting machine 129 cuts, thereby causing the effect that the sparks and high temperature ignite the residual gas inside the blast furnace gas pipe 11;

[0033] As the cutting machine 129 performs all-round rotational cutting on the surface of the blast furnace gas pipe 11, the water pump a5 is used to inject clean water into the interior of the water sprinkling hollow strip a6. After the clean water penetrates the water sprinkling hollow strip a6, it will be directly sprayed on the surface of the blast furnace gas pipe 11. The continuous contact between the water source and the blast furnace gas pipe 11 will quickly cool the surface of the blast furnace gas pipe 11, and the sprayed water source will form a covering net, which can greatly reduce the sparks generated when the cutting machine 129 cuts the blast furnace gas pipe 11. After the cutting knife gradually deepens the cutting depth, the cutting knife on the output end of the cutting machine 129 will directly penetrate the blast furnace gas pipe 11. When the cutting knife enters the interior of the blast furnace gas pipe 11, the external water source will enter the interior of the blast furnace gas pipe 11 together with the gap cut by the cutting machine 129, thereby reducing the sparks generated by the friction between the cutting knife and the blast furnace gas pipe 11, and achieving the goal of gradually deepening the cutting depth by rotation. The depth between the cutting knife and the blast furnace gas pipe 11 can isolate a large number of sparks generated by the friction between the cutting knife and the blast furnace gas pipe 11 on the outer surface of the blast furnace gas pipe 11, thereby avoiding the situation that the traditional cutting knife directly inserts the cutting knife into the interior of the blast furnace gas pipe 11 at the origin when cutting the blast furnace gas pipe 11, and then cuts the blast furnace gas pipe 11 by moving the cutting machine 129. This cutting method will cause the sparks and high temperature generated when the cutting machine 129 cuts the blast furnace gas pipe 11 to be directly transmitted into the interior of the blast furnace gas pipe 11, thereby directly causing the gas inside the blast furnace gas pipe 11 to burn. After the cut blast furnace gas pipe 11 is replaced, a DN900 bell mouth is reinstalled at the cut end of the blast furnace gas pipe 11, and the angle of the DN900 bell mouth is greater than 60 degrees, so that when the gas is infused, the gas will not cause excessive wear on the angle of the blast furnace gas pipe 11.

[0034] Furthermore, if Figure 1 and Figure 3 - Figure 4 , Figure 6 - Figure 7 As shown, hydraulic plates 123 and limiting rings 124 are symmetrically fixedly installed on the two side surfaces of the limiting track 122, and the output end of the hydraulic plate 123 is movably sleeved on the inner wall of the limiting ring 124, and docking grooves 127 are provided on the two end surfaces of the No. 1 semicircular slide 126, and docking convex strips 128 movably sleeved on the inner wall of the docking groove 127 are provided on the two end outer surfaces of the No. 2 semicircular slide 126.

[0035] When the limit track 122, hydraulic plate 123, limit collar 124, semi-circular slide bar 126, docking groove 127 and docking rib 128 provided by the present invention are in use, the three fixing platforms 12 are respectively moved to the positions where the blast furnace gas pipes 11 need to be cut and replaced at the joints, and cooperate with the fixing platforms 12 to slide on the surface of the double-strand limit rod 121. The limit track 122 and the semi-circular slide bar 126 are wrapped on the outer surface of the blast furnace gas pipe 11. The hydraulic plate 123 on the outer surface of the limit track 122 is sleeved on the inner wall surface of the limit collar 124 to limit the position of the limit track 122, so as to avoid the swing at the docking part of the two limit tracks 122 caused by inertia when the semi-circular slide bar 126 rotates inside the limit track 122, and further cause excessive wear between the semi-circular slide bar 126 and the inner wall surface of the limit track 122. And cooperate with the docking groove 127 and the docking rib 128 on the outer surface of the semi-circular slide bar 126 for docking, and then limit and fix the two semi-circular slide bars 126 together. Then, the position of the semi-circular slide bar 126 is limited by the limit track 122, so that when the motor 125 rotates, the semi-circular slide bar 126 can only rotate in a limited way on the inner wall surface of the limit track 122, and then drive the cutting machine 129 to continuously rotate and deepen the cutting on the surface of the blast furnace gas pipe 11. When the surface of the blast furnace gas pipe 11 is completely cut, the clamping fixing plate 1210 is lapped on the cut of the blast furnace gas pipe 11, and the cut is polished as the semi-circular slide bar 126 continuously rotates.

[0036] Further, as Figure 3 - Figure 6 shown, a hydraulic rod c1 is fixedly installed on the outer surface of the clamping fixing plate 1210. A connecting arm c2 is fixedly connected to the output end of the hydraulic rod c1. A slide rod c4 is movably sleeved on the outer surface of the connecting arm c2. A elastic wire c3 arranged at one end of the slide rod c4 is fixedly connected to the inner wall surface of the connecting arm c2. A pressing and pushing plate c5 is fixedly connected to one end of the slide rod c4. Grinding strips c6 are fixedly connected to the outer surface of the pressing and pushing plate c5 and the inner wall surface of the connecting arm c2. An arc groove c7 is arranged on one side surface of the grinding strips c6. A water filling machine c9 is fixedly installed on the outer surface of the clamping fixing plate 1210. One end of the water filling machine c9 passes through the connecting arm c2 and extends to the position of one side edge of the pressing and pushing plate c5. A diversion chute c8 is arranged on the outer surface of the pressing and pushing plate c5 at the position of one end of the water filling machine c9.

[0037] When the snap - fixing plate 1210, hydraulic rod c1, F - shaped snap - connecting arm c2, extrusion push plate c5, grinding strip c6, arc - shaped groove c7 and water - filling machine c9 provided by the present invention are in use, the hydraulic rod c1 at one end of the snap - fixing plate 1210 is used to push the F - shaped snap - connecting arm c2, so that the inner side wall surface of the F - shaped snap - connecting arm c2 overlaps at the cut of the blast - furnace gas pipe 11. As the hydraulic rod c1 continuously extends the F - shaped snap - connecting arm c2, the grinding strip c6 on the outer surface of the extrusion push plate c5 will cover the cut of the blast - furnace gas pipe 11. As the semi - circular slide bar 126 rotates continuously, the grinding strip c6 is used to perform high - speed friction grinding on the cut of the blast - furnace gas pipe 11. At the same time, the arc - shaped groove c7 on the outer surface of the grinding strip c6 is used to perform secondary grinding on the edge position of the cut to remove the burrs at the cut. At the same time, the water - filling machine c9 is used to spray water on the surface of the grinding strip c6 to cool the surface of the grinding strip c6, avoiding the extremely high temperature generated between the grinding strip c6 and the blast - furnace gas pipe 11 due to friction and thus reducing the service life of the grinding strip c6.

[0038] Further, as Figure 1 - Figure 2 、 Figure 4 、 Figure 6 shown, an extension strip a1 is fixedly connected to the outer surface of the limit track 122. A threaded rod a2 is threadedly movably sleeved on the outer surface of the extension strip a1. One end of the threaded rod a2 is hingedly movably sleeved with a limit sleeve a3. A fitting soft plate a4 that movably overlaps on the outer surface of the blast - furnace gas pipe 11 is fixedly connected to the outer surface of the limit sleeve a3.

[0039] When the limit track 122, extension strip a1, threaded rod a2, limit sleeve a3 and fitting soft plate a4 provided by the present invention are in use, the three fixing platforms 12 are respectively moved to the positions that need to be cut and replaced at the junction of the blast - furnace gas pipes 11. Cooperating with the fixing platforms 12 to slide on the surface of the double - strand limit rod 121, the limit track 122 and the semi - circular slide bar 126 are wrapped around the outer surface of the blast - furnace gas pipe 11. Cooperating with the threaded rod a2 to move towards the blast - furnace gas pipe 11 on the surface of the extension strip a1, the fitting soft plate a4 at one end of the limit sleeve a3 is made to fit on the surface of the blast - furnace gas pipe 11. By extending the length of the threaded rod a2, blast - furnace gas pipes 11 of different sizes can be fixed. Then, by extending the length of the extended cutting machine 129, the cutting knife at the output end of the cutting machine 129 is made to overlap on the surface of the blast - furnace gas pipe 11 for cutting treatment, achieving the effect of extending and overlapping blast - furnace gas pipes 11 of different sizes by extending the length of the threaded rod a2 and fixing the blast - furnace gas pipe 11.

[0040] The working principle of the auxiliary loading and unloading device will be specifically described below. Move the three fixed platforms 12 to the positions where the joints of the blast furnace gas pipes 11 need to be cut and replaced. Slide along the surface of the double-strand limiting rod 121 of the fixed platform 12, wrap the limiting track 122 and the semi-circular slide bar 126 on the outer surface of the blast furnace gas pipe 11. At the same time, rotate with the output end of the motor 125, and then push the semi-circular slide bar 126 to rotate around the blast furnace gas pipe 11 as the center point on the inner wall surface of the limiting track 122. Cooperate with the cutting machine 129 on the inner wall surface of the semi-circular slide bar 126 to overlap on the surface of the blast furnace gas pipe 11. When the semi-circular slide bar 126 rotates, gradually deepen the cutting depth with the cutting knife at the output end of the cutting machine 129, so that the sparks generated when the cutting machine 129 cuts the surface of the blast furnace gas pipe 11 can be greatly isolated on the outer surface of the blast furnace gas pipe 11, avoiding the cutting knife of the cutting machine 129 directly penetrating the surface of the blast furnace gas pipe 11 when cutting the blast furnace gas pipe 11, and preventing the sparks from directly entering the interior of the blast furnace gas pipe 11 during the cutting of the cutting machine 129, thus avoiding the effect that the sparks and high temperature will ignite the residual gas inside the blast furnace gas pipe 11;

[0041] And cooperate with the docking groove 127 and the docking rib 128 on the outer surface of the semi-circular slide bar 126 for docking, and then limit and fix the two semi-circular slide bars 126 together. Then, limit the position of the semi-circular slide bar 126 through the limiting track 122, so that when the motor 125 rotates, the semi-circular slide bar 126 can only perform limited rotation on the inner wall surface of the limiting track 122, and then drive the cutting machine 129 to continuously rotate and deepen the cutting on the surface of the blast furnace gas pipe 11. When the surface of the blast furnace gas pipe 11 is completely cut, lap the clamping fixing plate 1210 at the cut of the blast furnace gas pipe 11, and polish the cut with the continuous rotation of the semi-circular slide bar 126;

[0042] As the cutting machine 129 performs all-round rotational cutting on the surface of the blast furnace gas pipe 11, the water pump a5 is used to inject clean water into the interior of the water sprinkling hollow strip a6. After the clean water penetrates the water sprinkling hollow strip a6, it will be directly sprayed on the surface of the blast furnace gas pipe 11. The continuous contact between the water source and the blast furnace gas pipe 11 will quickly cool the surface of the blast furnace gas pipe 11, and the sprayed water source will form a covering net, which can greatly reduce the sparks generated when the cutting machine 129 cuts the blast furnace gas pipe 11. After the cutting knife gradually deepens the cutting depth, the cutting knife on the output end of the cutting machine 129 will directly penetrate the blast furnace gas pipe 11. When the cutting knife enters the interior of the blast furnace gas pipe 11, the external water source will enter the interior of the blast furnace gas pipe 11 together with the gap cut by the cutting machine 129, thereby reducing the sparks generated by the friction between the cutting knife and the blast furnace gas pipe 11, and achieving the goal of gradually deepening the cutting depth by rotation. The depth between the cutting knife and the blast furnace gas pipe 11 can isolate a large number of sparks generated by the friction between the cutting knife and the blast furnace gas pipe 11 on the outer surface of the blast furnace gas pipe 11, thereby avoiding the situation that the traditional cutting knife directly inserts the cutting knife into the interior of the blast furnace gas pipe 11 at the origin when cutting the blast furnace gas pipe 11, and then cuts the blast furnace gas pipe 11 by moving the cutting machine 129. This cutting method will cause the sparks and high temperature generated when the cutting machine 129 cuts the blast furnace gas pipe 11 to be directly transmitted into the interior of the blast furnace gas pipe 11, thereby directly causing the gas inside the blast furnace gas pipe 11 to burn. After the cut blast furnace gas pipe 11 is replaced, a DN900 bell mouth is reinstalled at the cut end of the blast furnace gas pipe 11, and the angle of the DN900 bell mouth is greater than 60 degrees, so that when the gas is infused, the gas will not cause excessive wear on the angle of the blast furnace gas pipe 11.

[0043] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A blast furnace gas pipeline, comprising a blast furnace gas pipe and a fixing platform detachably mounted on the outer surface of the blast furnace gas pipe, characterized in that: A limited transmission unit is arranged on the outer surface of the fixed platform, and the limited transmission unit includes a double-strand limited rod arranged on the outer surface of the fixed platform, a limited track is fixedly installed on the top surface of the double-strand limited rod and at the top edge position of the double-strand limited rod, two groups of semicircular sliding strips are movably overlapped on the inner wall surface of the limited track, a motor movably overlapped on the outer surface of the semicircular sliding strip is arranged on the top outer surface of the limited track, a cutting machine is detachably installed on the inner middle position of the No. 1 semicircular sliding strip, and a clamping fixing plate is detachably installed on the outer surface of the No. 2 semicircular sliding strip; A water pump is fixedly mounted on the outer surface of the fixing platform, and a water sprinkling hollow bar arranged on the output end of the water pump is fixedly mounted on the outer surface of the limiting track; A hydraulic rod is fixedly mounted on the outer surface of the clamping fixing plate, an F-shaped clamping arm is fixedly connected to the output end of the hydraulic rod, and a sliding rod is movably sleeved on the outer surface of the F-shaped clamping arm; An elastic wire arranged on one end of a slide rod is fixedly connected to the inner wall surface of the F-shaped clamping arm, and an extrusion push plate is fixedly connected to one end of the slide rod; A grinding strip is fixedly connected to the outer surface of the extrusion push plate and the inner wall surface of the F-shaped clamping arm, and an arc-shaped groove is provided on one side surface of the grinding strip; The pump injects clean water into the hollow sprinkler strips. After penetrating the hollow sprinkler strips, the clean water will be directly sprayed on the surface of the blast furnace gas pipe. The continuous contact between the water source and the blast furnace gas pipe will quickly cool the surface of the blast furnace gas pipe, and the sprayed water source will form a layer of covering net, which can greatly reduce the sparks generated by the cutting machine when cutting the blast furnace gas pipe. The incision of the blast furnace gas pipe is subjected to high-speed friction grinding by a grinding strip, and at the same time, the edge of the incision is secondary ground by the arc groove on the outer surface of the grinding strip to remove the burrs on the incision.

2. A blast furnace gas pipeline according to claim 1, characterized in that: A hydraulic plate and a limiting ring are symmetrically and fixedly installed on both side surfaces of the limiting track, and the output end of the hydraulic plate is movably sleeved on the inner wall surface of the limiting ring.

3. A blast furnace gas pipeline according to claim 1, characterized in that: The two end surfaces of the first semicircular sliding strip are provided with docking grooves, and the two end outer surfaces of the second semicircular sliding strip are provided with docking convex strips which are movably sleeved on the inner side wall surfaces of the docking grooves.

4. A blast furnace gas pipeline according to claim 1, characterized in that: An extension bar is fixedly connected to the outer surface of the limiting track, and a threaded rod is movably sleeved on the outer surface of the extension bar.

5. A blast furnace gas pipeline according to claim 4, characterized in that: A limiting sleeve is hingedly and movably sleeved on one end of the threaded rod, and a fitting soft plate movably overlapped on the outer surface of the blast furnace gas pipe is fixedly connected to the outer surface of the limiting sleeve.

6. A blast furnace gas pipeline according to claim 1, characterized in that: A watering machine is fixedly mounted on the outer surface of the clamping fixing plate, and one end of the watering machine passes through the F-shaped clamping arm and extends to a side edge position of the extrusion pushing plate.

7. A blast furnace gas pipeline according to claim 6, characterized in that: A diversion chute is arranged on the outer surface of the extrusion push plate and at one end of the irrigation machine.

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