Mounting and testing tool for tuyere small sleeve of blast furnace

Abstract

The utility model discloses a blast furnace tuyere small sleeve installation test tool. The blast furnace tuyere small sleeve installation test tool comprises a protective shell, a spherical top, an L-shaped blowpipe, a fixing assembly, a ball valve and an air source, the protective shell is of a hollow cylinder structure horizontally and transversely arranged, and the left end and the right end of the protective shell are open. A spherical top is coaxially arranged on the right end face of the protective shell, and the spherical surface of the spherical top is consistent with the spherical surface of the belly pipe in machining; the left end of the spherical top is a large-diameter side, and a through hole is coaxially and vertically embedded in the right end face of the spherical top in a penetrating mode. The horizontal edge of the L-shaped blowpipe is coaxially sleeved in the protective shell at intervals and is positioned through a fixing assembly, and the end surface of the horizontal edge of the L-shaped blowpipe and the right end surface of the spherical top head are coplanar; the vertical edge of the L-shaped blowing pipe vertically upwards extends out of the outer circumferential face of the protective shell through the left side position of the middle of the protective shell and is communicated with an air source in a sealed mode through a pipeline and a ball valve. According to the utility model, the installation precision of the small sleeve can be tested before the belly pipe is installed, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of blast furnace production technology, specifically to a blast furnace tuyeres small sleeve installation and testing tool. Background Technology

[0002] The tuyeres are a key component of a blast furnace in an ironmaking plant. During normal blast furnace production, the high-temperature hot air blown in through the tuyeres reacts with the coke at the bottom of the furnace to generate CO. As the CO rises, it reduces iron, which was originally in oxide form. The tuyeres are installed in the furnace wall between the belly and the bottom of the furnace. During normal production, they must withstand temperatures exceeding 1500℃ and abrasion from the furnace charge and slag. Their main material is high-purity copper. During planned maintenance, faulty tuyer sleeves are typically replaced. However, checking the accuracy and effectiveness of the sleeve installation can only be done after the direct-blowing pipe is installed, which significantly impacts work efficiency. Therefore, how to test the sleeve installation before installing the direct-blowing pipe has become a pressing problem. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a blast furnace tuyere small sleeve installation test tool, which can test the installation accuracy of the small sleeve before installing the direct blowing pipe, saving time and effort and improving work efficiency.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: The innovative feature of this utility model is that it includes a protective shell, a spherical mandrel, an L-shaped blowing pipe, a fixing component, a ball valve, and a gas source; the protective shell is a horizontally arranged hollow cylindrical structure, with both its left and right ends being open; a spherical mandrel is coaxially fixed and fitted onto the right end face of the protective shell, and the spherical surface of the spherical mandrel is machined to match the spherical surface of the blowing pipe; the left end of the spherical mandrel is the large-diameter side, and a through hole matching the small sleeve is coaxially and vertically embedded on its right end face, thereby allowing the air to pass through... The hole is connected to the inside of the protective shell; the horizontal side of the L-shaped blowpipe is coaxially spaced inside the protective shell and positioned by a fixing component, ensuring that its horizontal side end face is coplanar with the right end face of the spherical top; the vertical side of the L-shaped blowpipe is located on the left side and extends vertically upward through the middle left of the protective shell to the outer circumference of the protective shell, and is connected to the air source through a pipe and a ball valve, thereby coaxially fitting the spherical top onto the small sleeve, and ensuring that one end of the horizontal side of the L-shaped blowpipe is coaxially aligned with the small sleeve, and then the small sleeve is tested for sealing performance by the cooperation of the air source, ball valve and L-shaped blowpipe.

[0005] Preferably, the right end radius of the spherical dome is 80mm, the left end radius is 160mm, and the lateral length is 100mm.

[0006] Preferably, the outer diameter of the L-shaped blowpipe is 25mm, and its horizontal side length is 900mm and its vertical side length is 150mm.

[0007] Preferably, the outer diameter of the protective shell is 240 mm and its length is 2200 mm.

[0008] Preferably, a strip groove is vertically embedded and penetrated on the outer circumferential surface of the protective shell relative to the vertical edge of the L-shaped blowpipe. The width of the strip groove is 25mm, and it communicates with the interior of the protective shell. The strip groove is opened along the length of the protective shell, and its right end is aligned with the vertical edge of the L-shaped blowpipe. Its left end extends vertically out of the left end face of the protective shell along the length of the protective shell. Thus, by setting the strip groove, the L-shaped blowpipe is inserted into the protective shell from the left end, and the right end of the strip groove ensures that the horizontal end face of the L-shaped blowpipe is coplanar with the right end face of the spherical top.

[0009] Preferably, the ball valve is a DN25 ball valve, and a pressure gauge is also connected to the pipeline between the gas source and the ball valve to ensure that the gas source pressure is qualified.

[0010] Preferably, the fixing assembly includes a retainer I and a retainer II; inside the protective shell, retainers I and II are also horizontally longitudinally arranged in a staggered manner relative to the L-shaped blowpipe side, and retainers I and retainers II are spaced apart left and right; retainers I and retainers II are both elongated structures that match the interior of the protective shell, and retainer I is located on the side near the spherical top; retainer I is located directly above the horizontal edge of the L-shaped blowpipe, and retainer II is located directly below the horizontal edge of the L-shaped blowpipe, ensuring that the vertical distance between them matches the horizontal edge of the L-shaped blowpipe, thereby positioning the horizontal edge of the L-shaped blowpipe through the cooperation of retainers I and retainers II.

[0011] Preferably, it also includes fixing plates; fixing plates are vertically fixed at both ends of the outer circumference of the protective shell and at intervals on the left and right sides relative to the vertical side of the L-shaped blowpipe. Each fixing plate is vertically arranged along the radial direction of the protective shell, and the four fixing plates are arranged in a rectangular symmetrical arrangement, and are vertically fixed to the corresponding positions on the outer circumference of the protective shell. The distance between each pair of adjacent fixing plates is 1000mm, and a forklift hole with a specification of 80×25×160mm is vertically embedded and penetrated in the middle of the left side of each fixing plate, so as to fix the protective shell by cooperating with the blowpipe forklift through the forklift hole.

[0012] The beneficial effects of this utility model are:

[0013] (1) This utility model can test the installation accuracy of the small sleeve before installing the direct blow pipe, which saves time and effort and improves work efficiency;

[0014] (2) This utility model has a simple structure, is easy to maintain and repair, makes up for the lack of small-set installation accuracy testing instruments, reduces the probability of rework and replacement of small sets, and improves the work efficiency of operators. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of a blast furnace tuyere small sleeve installation and testing tool according to the present invention.

[0017] Figure 2 for Figure 1 Side view.

[0018] Among them, 1-protective shell; 2-spherical top; 3-cage I; 4-cage II; 5-L-shaped blowpipe; 6-ball valve; 7-pressure gauge; 8-air source; 9-strip groove; 10-fixing plate; 11-forklift hole. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0020] This utility model discloses a blast furnace tuyeres small sleeve installation and testing tool, comprising a protective shell 1, a spherical mandrel 2, an L-shaped blowpipe 5, a fixing assembly, a ball valve 6, and an air source 8; the specific structure is as follows: Figure 1 , Figure 2 As shown, the protective shell 1 is a horizontally arranged hollow cylindrical structure with open ends on both sides; the outer diameter of the protective shell 1 is 240mm and its length is 2200mm; a spherical head 2 is coaxially fixed and attached to the right end face of the protective shell 1, and the spherical surface of the spherical head 2 is machined in the same way as the spherical surface of the straight blow pipe; the left end of the spherical head 2 is the large diameter side, and a through hole matching the small sleeve is coaxially and vertically embedded in its right end face, thereby connecting the through hole with the interior of the protective shell 1; the right end radius of the spherical head 2 is 80mm, the left end radius is 160mm, and its lateral length is 100mm.

[0021] The horizontal edge of the L-shaped blowpipe 5 of this utility model is coaxially spaced within the protective shell 1 and positioned by a fixing component, ensuring that its horizontal edge end face is coplanar with the right end face of the spherical top head 2; Figure 1 , Figure 2 As shown, the outer diameter of the L-shaped blowpipe 5 is 25mm, its horizontal side length is 900mm, and its vertical side length is 150mm. The vertical side of the L-shaped blowpipe 5 is located on the left side and extends vertically upward from the middle left side of the protective shell 1 to the outer circumference of the protective shell 1. It is connected to the air source 8 through a pipeline via a ball valve 6 and then the spherical top head 2 is coaxially fitted onto the small sleeve. After ensuring that one end of the horizontal side of the L-shaped blowpipe 5 is coaxially aligned with the small sleeve, the small sleeve is then tested for sealing through the cooperation of the air source 8, the ball valve 6, and the L-shaped blowpipe 5. The ball valve 6 is a DN25 ball valve, and a pressure gauge 7 is also connected to the pipeline between the air source 8 and the ball valve 6 to ensure that the air source pressure is qualified.

[0022] like Figure 1 , Figure 2 As shown, a strip groove 9 is vertically embedded and penetrated on the outer circumferential surface of the protective shell 1 relative to the vertical edge of the L-shaped blowpipe 5. The width of the strip groove 9 is 25mm, and it is connected to the interior of the protective shell 1. The strip groove 9 is opened along the length of the protective shell 1, and its right end is aligned with the vertical edge of the L-shaped blowpipe 5. Its left end extends vertically out of the left end face of the protective shell 1 along the length of the protective shell 1. Thus, by setting the strip groove 9, the L-shaped blowpipe 5 is inserted into the protective shell 1 from the left end, and the right end of the strip groove 9 ensures that the horizontal end face of the L-shaped blowpipe 5 is coplanar with the right end face of the spherical top 2.

[0023] The fixing assembly of this utility model includes a retainer I3 and a retainer II4; as shown in the figure Figure 1 , Figure 2 As shown, inside the protective shell 1, relative to the side of the L-shaped blowpipe 5, there are horizontally longitudinally arranged retainers I3 and II4, which are staggered vertically and spaced apart horizontally. Both retainers I3 and II4 are long strip structures that match the interior of the protective shell 1, and retainer I3 is located on the side near the spherical top 2. Retainer I3 is located directly above the horizontal side of the L-shaped blowpipe 5, and retainer II4 is located directly below the horizontal side of the L-shaped blowpipe 5, ensuring that the vertical distance between them matches the horizontal side of the L-shaped blowpipe 5. Thus, the horizontal side of the L-shaped blowpipe 5 is positioned by the cooperation of retainers I3 and II4.

[0024] like Figure 1 , Figure 2As shown, at both ends of the outer circumference of the protective shell 1 and on the left side of the vertical side of the L-shaped blowpipe 5, there are four fixing plates 10 vertically fixed at intervals. Each fixing plate 10 is vertically arranged along the radial direction of the protective shell 1, and the four fixing plates 10 are arranged in a rectangular symmetrical manner and are vertically fixed to the corresponding position of the outer circumference of the protective shell 1. The distance between each pair of adjacent fixing plates 10 is 1000mm, and a forklift hole 11 with a specification of 80×25×160mm is vertically embedded and penetrated in the middle of the left side of each fixing plate 10. The protective shell 1 is then fixed by the cooperation of the forklift hole 11 with the blowpipe forklift.

[0025] The working principle of this utility model is as follows: First, the L-shaped blowpipe 5 is inserted into the protective shell 1 from the left side through the strip groove 9, passing between the retainer I3 and retainer II4, and ensuring that the horizontal end face of the L-shaped blowpipe 5 is coplanar with the right end face of the spherical top 2 through the right end of the strip groove 9; then, the protective shell 1 is fixed by cooperating with the blowpipe forklift through the forklift hole 11; then, the vertical side of the L-shaped blowpipe 5 is sealed and connected to the air source 8 through the pipeline via the ball valve 6; at this time, the spherical top 2 is coaxially sleeved on the small sleeve, and after ensuring that one end of the horizontal side of the L-shaped blowpipe 5 is coaxially connected with the small sleeve, the small sleeve can be tested for sealing through the cooperation of the air source 8, the ball valve 6 and the L-shaped blowpipe 5.

[0026] The beneficial effects of this utility model are:

[0027] (1) This utility model can test the installation accuracy of the small sleeve before installing the direct blow pipe, which saves time and effort and improves work efficiency;

[0028] (2) This utility model has a simple structure, is easy to maintain and repair, makes up for the lack of small-set installation accuracy testing instruments, reduces the probability of rework and replacement of small sets, and improves the work efficiency of operators.

[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.

Claims

1. A tool for testing the installation of a small sleeve at a blast furnace tuyere, characterized in that: The system includes a protective shell, a spherical mandrel, an L-shaped blowpipe, a fixing assembly, a ball valve, and an air source. The protective shell is a horizontally arranged hollow cylindrical structure with open ends. A spherical mandrel is coaxially fixed to the right end face of the protective shell, and the spherical surface of the mandrel is machined to match the spherical surface of the blowpipe. The left end of the spherical mandrel is the larger diameter side, and a through hole matching a small sleeve is coaxially and vertically embedded in its right end face, thus connecting the through hole to the interior of the protective shell. The horizontal edge of the L-shaped blowpipe is coaxially spaced from the sleeve. The L-shaped blowpipe is connected inside the protective shell and positioned by a fixing component, ensuring that its horizontal end face is coplanar with the right end face of the spherical top. The vertical side of the L-shaped blowpipe is located on the left side and extends vertically upward from the outer circumference of the protective shell at a position slightly to the left of the middle of the protective shell. It is then connected to the air source via a pipe and a ball valve, and the spherical top is coaxially fitted onto the small sleeve. After ensuring that one end of the horizontal side of the L-shaped blowpipe is coaxially aligned with the small sleeve, the small sleeve is then tested for sealing through the cooperation of the air source, the ball valve, and the L-shaped blowpipe.

2. The blast furnace tuyere sleeve installation and testing tool according to claim 1, characterized in that: The spherical dome has a right end radius of 80mm, a left end radius of 160mm, and a lateral length of 100mm.

3. The blast furnace tuyere sleeve installation and testing tool according to claim 1, characterized in that: The L-shaped blowpipe has an outer diameter of 25mm, a horizontal side length of 900mm, and a vertical side length of 150mm.

4. The blast furnace tuyere sleeve installation and testing tool according to claim 3, characterized in that: The outer diameter of the protective shell is 240 mm, and its length is 2200 mm.

5. The blast furnace tuyere sleeve installation and testing tool according to claim 4, characterized in that: A strip-shaped groove is vertically embedded and penetrated on the outer circumferential surface of the protective shell relative to the vertical edge of the L-shaped blowpipe. The width of the strip-shaped groove is 25mm, and it is connected to the interior of the protective shell. The strip-shaped groove is opened along the length of the protective shell, and its right end is aligned with the vertical edge of the L-shaped blowpipe. Its left end extends vertically out of the left end face of the protective shell along the length of the protective shell. The strip-shaped groove allows the L-shaped blowpipe to be inserted into the protective shell from the left end, and the right end of the strip-shaped groove ensures that the horizontal end face of the L-shaped blowpipe is coplanar with the right end face of the spherical top.

6. The blast furnace tuyere sleeve installation and testing tool according to claim 1, characterized in that: The ball valve is a DN25 ball valve, and a pressure gauge is also connected to the pipeline between the gas source and the ball valve to ensure that the gas source pressure is qualified.

7. The blast furnace tuyere sleeve installation and testing tool according to claim 1, characterized in that: The fixing assembly includes a retainer I and a retainer II; inside the protective shell, retainers I and II are also arranged horizontally and longitudinally in a staggered manner relative to the L-shaped blowpipe side, and retainers I and retainers II are also spaced apart left and right; retainers I and retainers II are both elongated structures that match the interior of the protective shell, and retainer I is located on the side near the spherical top; retainer I is located directly above the horizontal edge of the L-shaped blowpipe, and retainer II is located directly below the horizontal edge of the L-shaped blowpipe, ensuring that the vertical distance between them matches the horizontal edge of the L-shaped blowpipe, thereby positioning the horizontal edge of the L-shaped blowpipe through the cooperation of retainers I and retainers II.

8. The blast furnace tuyere sleeve installation and testing tool according to claim 5, characterized in that: It also includes fixing plates; at the front and rear ends of the outer circumference of the protective shell and on the left side of the vertical side of the L-shaped blowpipe, fixing plates are respectively fixedly spaced on the left and right. Each fixing plate is vertically arranged along the radial direction of the protective shell, and the four fixing plates are arranged in a rectangular symmetrical arrangement, and are respectively vertically fixedly connected to the corresponding position of the outer circumference of the protective shell; the distance between each pair of adjacent fixing plates is 1000mm, and a forklift hole with a specification of 80×25×160mm is vertically embedded in the middle of the left side of each fixing plate, so as to fix the protective shell by cooperating with the blowpipe forklift through the forklift hole.

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