CN114314316A - A kind of blast furnace top dust removal pipeline installation method - Google Patents

Abstract

The invention relates to a method for installing a dust removal pipeline at the top of a blast furnace, which comprises the following steps: step 1: uniformly modeling the vertical dust removal pipeline, the transverse dust removal pipeline, the dust removal pipeline bracket and the furnace top rigid frame column, and drawing a processing diagram; step 2: welding a plurality of dust removal pipeline supports and the furnace top rigid frame column into a whole according to a processing drawing, and carrying out integral installation on site; and step 3: assembling an oblique dust removal pipeline and a transverse dust removal pipeline on the ground on site according to a processing diagram; and 4, step 4: installing the whole section of the oblique dust removal pipeline in place by using a hoisting machine; and 5: hoisting the transverse dust removal pipeline to the outer side of the belt conveyor supporting platform; step 6: the electric hoist is connected with the hoisting device to horizontally hoist and mount the transverse dust removal pipeline in place. The invention can conveniently install the transverse dedusting furnace top dedusting pipeline on the narrow belt conveyor supporting platform, and install the oblique furnace top dedusting pipeline along the furnace top frame oblique column, thereby improving the installation efficiency of the furnace top dedusting pipeline.

Description

A kind of blast furnace top dust removal pipeline installation method

technical field

The invention relates to the technical field of metallurgical ironmaking blast furnace construction, in particular to a method for installing a blast furnace top dust removal pipe.

Background technique

The current oblique dust removal pipes laid along the inclined columns of the furnace roof frame adopt the method of installing the dust removal pipe supports after the furnace roof rigid frame is installed, and installing the dust removal pipes in sections. Not only there are many high-altitude operations, but also the high-altitude docking operation is complex and safe. coefficient is low. When the horizontal furnace top dust removal pipeline is installed, each maintenance platform on the top of the furnace has been installed in place with the structure, and there is no open space on each platform. For installation and hanging upside down chain, many holes need to be opened on the upper platform, which not only needs to be repaired later, but also affects the safety of operators. Therefore, there is an urgent need for a method that can install a horizontal furnace top dust removal duct and an efficient installation of an oblique dust removal duct on a narrow belt conveyor support platform.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a method for installing a blast furnace top dust removal pipeline, which can facilitate the installation of a horizontal dust removal furnace top dust removal pipeline on a narrow belt conveyor support platform, and an oblique furnace top dust removal pipeline along the inclined column of the furnace roof frame. Improve the installation efficiency of the furnace top dust removal pipeline.

The technical solution adopted by the present invention to solve the technical problem is to provide a method for installing a dust removal pipeline on the top of a blast furnace, comprising the following steps:

Step 1: Model the vertical dust removal pipe, horizontal dust removal pipe, dust removal pipe support in the process drawing and the furnace top rigid frame column in the structural diagram, and draw the processing diagram;

Step 2: The manufacturer welds multiple dust removal pipe supports and furnace top rigid frame columns into a whole according to the processing drawing, and performs the overall installation on site;

Step 3: Assemble the oblique dust removal pipe and the horizontal dust removal pipe on the ground according to the processing drawing;

Step 4: Use lifting machinery to install the entire section of the oblique dust removal pipe in place;

Step 5: Hoist the horizontal dust removal pipe to the outside of the belt conveyor support platform;

Step 6: An electric hoist is hung on the lower flange of the H-section steel of the upper furnace roof traveling platform, and the electric hoist is connected to the hoisting device to horizontally hoist and install the lateral dust removal pipe in place.

As a supplement to the technical solution of the present invention, the hoisting device includes a movable pulley, a steel wire rope and two movable hoops, the movable hoops are sleeved outside the lateral dust removal pipe, and the top of each movable hooped A snap ring is connected, the wire rope is connected with two snap rings around the movable pulley, and the movable pulley is connected with the electric hoist.

As a supplement to the technical solution of the present invention, the movable pipe hoop includes an arc-shaped base plate, an arc-shaped wing plate, a lug plate and a bolt, and two ends of the arc-shaped base plate are rotatably connected with an arc-shaped wing. The free end of the arc-shaped wing plate is provided with an ear plate, the two ear plates are connected by bolts, and the snap ring is installed on the two ear plates.

As a supplement to the technical solution of the present invention, the arc-shaped bottom plate and the arc-shaped wing plate are connected by hinges.

As a supplement to the technical solution of the present invention, rubber sheets are attached to the inner side of the arc-shaped bottom plate and the inner side of the arc-shaped wing plate.

Beneficial effects: The present invention relates to a method for installing a dust removal pipe on the top of a blast furnace. The dust removal pipe support and the furnace top rigid frame column are welded in advance in the manufacturing plant, which simplifies the steps of installing the dust removal pipe support at high altitude; The whole section is hoisted towards the dust removal pipeline, which simplifies the installation steps of the oblique pipeline, reduces the amount of work at heights, and ensures the safety of the operators; an electric hoist is hung on the upper H-shaped steel beam, and the H-shaped steel beam is used as the track of the electric hoist. , It can move and install the horizontal dust removal pipe above the belt conveyor support platform to reduce the workload of repairing the platform in the later stage.

Description of drawings

Fig. 1 is the top view of the present invention;

Fig. 2 is the schematic diagram of step 2 of the present invention;

Fig. 3 is the front view of the present invention;

Fig. 4 is the structural representation of the hoisting device of the present invention;

Fig. 5 is the front view of the movable pipe clamp of the present invention;

Fig. 6 is a left side view of the movable pipe clamp according to the present invention.

Illustration: 1. Dust removal pipe support, 2. Furnace roof rigid frame column, 3. Vertical dust removal pipe, 4. Horizontal dust removal pipe, 5. Electric hoist, 6. Hoisting device, 61, Moving pulley, 62, Steel wire rope, 63 , Active Hoop, 64, Snap Ring, 631, Curved Bottom Plate, 632, Curved Wing Plate, 633, Ear Plate, 634, Bolt, 635, Rubber Plate, 636, Hinges, 6331, Mounting Holes for Snap Rings, 6332, Bolt hole.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Embodiments of the present invention relate to a method for installing a blast furnace top dust removal pipe, as shown in Figures 1-6, including the following steps:

Step 1: The vertical dust removal pipe 3, the horizontal dust removal pipe 4, the dust removal pipe support 1 in the process drawing and the furnace top rigid frame column 2 in the structural diagram are uniformly modeled, and the processing drawing is drawn;

Step 2: As shown in Figure 1, the manufacturer welds multiple dust removal pipe supports 1 and furnace top rigid frame columns 2 into a whole according to the processing drawing, and performs the overall installation on site;

Step 3: Assemble the oblique dust removal duct 3 and the horizontal dust removal duct 4 on the ground according to the processing drawing;

Step 4: Use lifting machinery to install the entire section of the oblique dust removal duct 3 in place;

Step 5: Hoist the lateral dust removal pipe 4 to the outside of the belt conveyor support platform;

Step 6: As shown in Figure 3, an electric hoist 5 is hung on the lower flange of the H-shaped steel of the upper furnace roof traveling platform, and the electric hoist 5 is connected to the hoisting device 6 to horizontally hoist and install the lateral dust removal pipe 4 in place.

The hoisting device 6 includes a movable pulley 61, a steel wire rope 62 and two movable pipe hoops 63. The movable hoops 63 are sleeved outside the lateral dust removal pipe 4, and a snap ring 64 is connected to the top of each movable hoops 63. The wire rope 64 is connected to the two snap rings 64 around the movable pulley 61 , and the movable pulley 61 is connected to the electric hoist 5 .

The movable pipe hoop 63 includes an arc-shaped base plate 631, an arc-shaped wing plate 632, a lug plate 633 and a bolt 634. Both ends of the arc-shaped base plate 631 are rotatably connected with an arc-shaped wing plate 632. The free end of the plate 632 is provided with a lug plate 633. The lug plate 633 is provided with a bolt hole 6332 and a snap ring mounting hole 6331. The bolt 634 passes through the bolt holes 6332 of the two lug plates 633 for connection. U-shaped, a bolt 634 is installed at the opening of the snap ring 64 , and both ends of the bolt 634 pass through the snap ring mounting holes 6331 of the two lugs 633 .

The curved bottom plate 631 and the curved wing plate 632 are connected by a hinge 636 , and a rubber plate 635 is pasted on the inner side of the curved bottom plate 631 and the inner side of the curved wing plate 632 .

In the description of the present invention, it should be understood that the orientations indicated by orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and these orientation words do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the present invention; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under other devices or constructions". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood to limit the scope of protection of the present invention.

A method for installing a blast furnace top dust removal pipe provided by the present application has been described in detail above. The principles and implementations of the present application are described in this paper by using specific examples. The descriptions of the above embodiments are only used to help understand the present application. At the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation and application scope. To sum up, the content of this specification should not be construed as LIMITATIONS ON THIS APPLICATION.

Claims (5)

1. a blast furnace top dust removal pipeline installation method is characterized in that: comprise the following steps: Step 1: Unified modeling, drawing and processing of the vertical dust removal pipe (3), horizontal dust removal pipe (4), dust removal pipe support (1) in the process drawing and the furnace top rigid frame column (2) in the structure diagram picture; Step 2: The manufacturer welds the multiple dust removal pipe supports (1) and the furnace top rigid frame column (2) into a whole according to the processing drawing, and performs the overall installation on site; Step 3: Assemble the oblique dust removal duct (3) and the horizontal dust removal duct (4) on the ground according to the processing drawing; Step 4: Use a hoisting machine to install the entire section of the oblique dust removal duct (3) in place; Step 5: Hoist the lateral dust removal duct (4) to the outside of the belt conveyor support platform; Step 6: An electric hoist (5) is hung on the lower flange of the H-section steel of the upper furnace roof traveling platform, and the electric hoist (5) is connected to the hoisting device (6) to horizontally lift and install the lateral dust removal pipe (4) in place. 2. A blast furnace top dust removal pipeline installation method according to claim 1, characterized in that: the hoisting device (6) comprises a movable pulley (61), a wire rope (62) and two movable pipe hoops (63) , the movable pipe hoop (63) is sleeved outside the lateral dust removal pipe (4), the top of each movable pipe hoop (63) is connected with a snap ring (64), and the wire rope (64) goes around the movable pulley (64). 61) is connected with two snap rings (64), and the movable pulley (61) is connected with the electric hoist (5). 3. The method for installing a blast furnace top dust removal pipe according to claim 2, wherein the movable pipe hoop (63) comprises an arc-shaped bottom plate (631), an arc-shaped wing plate (632), a lug plate (633) and bolts (634), two ends of the arc-shaped bottom plate (631) are rotatably connected with an arc-shaped wing plate (632), and the free end of the arc-shaped wing plate (632) is provided with a lug plate (633). ), the two lugs (633) are connected by bolts (634), and the snap ring (64) is installed on the two lugs (633). 4 . The method for installing a blast furnace top dust removal pipe according to claim 3 , wherein the arc bottom plate ( 631 ) and the arc wing plate ( 632 ) are connected by a hinge ( 636 ). 5 . 5. A blast furnace top dust removal duct installation method according to claim 3, characterized in that: the inner side of the arc-shaped bottom plate (631) and the inner side of the arc-shaped wing plate (632) are all pasted with a rubber plate (635). ).

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