Lining making method after single water pipe of blast furnace wall body is damaged

Abstract

The invention discloses a lining making method after a blast furnace wall single water pipe is damaged, and relates to the field of metallurgical equipment. The lining making method after the single water pipe of the blast furnace wall body is damaged comprises the following steps: forming a plurality of main lining making holes between a water inlet and a water outlet of the damaged water pipe of the blast furnace cooling wall, and forming a plurality of auxiliary lining making holes in two sides of the damaged water pipe; a high-temperature-resistant cylindrical main grouting net is inserted through a damaged water pipe water inlet and then stretches out through a damaged water pipe water outlet, and cylindrical main compression nets connected to the main grouting net at intervals are pulled out through corresponding main lining holes; a high-temperature-resistant cylindrical auxiliary grouting net is inserted into each auxiliary lining hole; and semi-flow-state lining repairing slurry is introduced into the water inlet, the water outlet, all the main lining making holes and all the auxiliary lining making holes, so that the main grouting net and the auxiliary grouting net are opened till the damaged water pipe is fully filled with the semi-flow-state lining repairing slurry, and then the semi-flow-state lining repairing slurry overflows and is solidified. According to the lining manufacturing method for the damaged single water pipe of the blast furnace wall body, the integrity and the filling effect during grouting repair of the damaged single water pipe can be guaranteed.

Description

Technical Field

[0001] The present application relates to the field of metallurgical equipment, and in particular to a method for lining a blast furnace wall after a single water pipe is damaged. Background Art

[0002] As the age of the blast furnace increases, the wear of the cooling wall will increase year by year. In the early stage, a single water pipe will be worn and leak, which requires lining and repair. In the process of blast furnace lining management and maintenance, it is often the case that the grouting material is not filled into the vacant parts of the wall, resulting in insufficient cooling strength of the surrounding wall; or the grouting material is overfilled locally, resulting in a tumor-like thickening of the furnace area, which not only changes the blast furnace shape and affects the stable and smooth operation of the blast furnace, but also causes the thickened part to fall off due to stress during the downward movement of the charge. The above-mentioned lining defects will cause large-scale continuous damage to the wall around the defective area, which will bring great disadvantages to the safe and stable production of the blast furnace, seriously affect the life of the blast furnace, and ultimately lead to a substantial increase in the blast furnace energy consumption index.

[0003] Therefore, a lining treatment method for single water pipe damage is needed to extend the service life of the blast furnace wall. Summary of the invention

[0004] The purpose of the present application is to provide a lining method for a damaged single water pipe of a blast furnace wall, which can ensure the integrity and filling effect during grouting repair of the damaged single water pipe.

[0005] This application is implemented as follows:

[0006] The present application provides a method for lining a blast furnace wall after a single water pipe is damaged, comprising the following steps:

[0007] A plurality of main lining holes arranged at intervals are opened between the water inlet and the water outlet of the damaged water pipe of the blast furnace cooling wall, and a plurality of auxiliary lining holes arranged at intervals are opened on both sides of the damaged water pipe;

[0008] Insert the high temperature resistant cylindrical main grouting net through the water inlet of the damaged water pipe and then extend it through the water outlet of the damaged water pipe, and pull out the cylindrical main compression nets connected at intervals on the main grouting net through the corresponding main lining holes respectively; insert the high temperature resistant cylindrical auxiliary grouting nets into the auxiliary lining holes respectively;

[0009] Introduce semi-fluid lining repair slurry into the water inlet, water outlet, each main lining hole and each auxiliary lining hole to expand the main grouting net and the auxiliary grouting net until the semi-fluid lining repair slurry fully fills the damaged water pipe and then overflows and consolidates.

[0010] In some optional embodiments, both ends of the main grouting net and each main compression net are respectively connected with a first positioning rope, and when the first positioning rope is stretched, it is used to unfold the corresponding main compression net and pull out the corresponding main lining hole.

[0011] In some optional embodiments, a metal guide head is connected to the bottom of the main grouting net, and the metal guide head is used to guide the main grouting net to pass through the damaged water pipe and extend out through the water outlet.

[0012] In some optional embodiments, a first movable knot is provided on the first positioning rope, and semi-fluid lining repair slurry is introduced into the water inlet, water outlet and each main lining hole to expand the main grouting mesh, thereby driving the first positioning rope to move until each first movable knot moves to the corresponding water inlet, water outlet and main lining hole.

[0013] In some optional embodiments, the auxiliary grouting net is connected to a plurality of auxiliary compression nets spaced apart along its circumference, and the auxiliary grouting net is also connected to a second positioning rope, which is used to stretch and unfold each corresponding auxiliary compression net when the second positioning rope is stretched.

[0014] In some optional embodiments, a second moving knot is provided on the second positioning rope, and semi-fluid lining repair slurry is introduced into each auxiliary lining hole to expand the main grouting network, thereby driving the second positioning rope to move until each second moving knot moves into the corresponding auxiliary lining hole.

[0015] In some optional embodiments, when the semi-fluid lining repair slurry is introduced into the water inlet, the water outlet, each main lining hole and each auxiliary lining hole, the inlet plugging rod, the outlet plugging rod, the cooling rod and the slurry hanging rod are respectively inserted and fixed into the top of the main grouting net, the bottom of the main grouting net, the main compression net and the auxiliary compression net in the water inlet, the water outlet, the main lining hole and the auxiliary lining hole, and then the semi-fluid lining repair slurry is injected through the grouting holes on the inlet plugging rod, the outlet plugging rod, the cooling rod and the slurry hanging rod.

[0016] In some optional implementation schemes, the water inlet blocking rod, the water outlet blocking rod, the cooling rod and the slurry hanging rod extend out of the water inlet, the water outlet, the main lining hole and the auxiliary lining hole by 5-8 cm respectively.

[0017] In some optional embodiments, after the semi-fluid lining repair slurry fully fills the damaged water pipe and overflows, the semi-fluid lining repair slurry is continued to be introduced for more than 1 minute to form a 5-15 cm slurry layer on the outer wall of the blast furnace cooling wall corresponding to the damaged water pipe.

[0018] In some optional embodiments, the main grouting mesh, the main compression mesh and the auxiliary grouting mesh are made of materials that can withstand temperatures above 500°C.

[0019] The beneficial effects of the present application are as follows: the lining method for a damaged single water pipe of a blast furnace wall provided by the present application comprises the following steps: a plurality of main lining holes arranged at intervals are opened between the water inlet and the water outlet of the damaged water pipe of the blast furnace cooling wall, and a plurality of auxiliary lining holes arranged at intervals are opened on both sides of the damaged water pipe; a high-temperature resistant cylindrical main grouting net is inserted through the water inlet of the damaged water pipe and then extended through the water outlet of the damaged water pipe, and each cylindrical main compression net connected at intervals on the main grouting net is pulled out through each corresponding main lining hole; a high-temperature resistant cylindrical auxiliary grouting net is inserted into each auxiliary lining hole; a semi-fluid lining repair slurry is introduced into the water inlet, the water outlet, each main lining hole and each auxiliary lining hole to expand the main grouting net and the auxiliary grouting net until the semi-fluid lining repair slurry fully fills the damaged water pipe and then overflows and consolidates. The lining method for a damaged single water pipe of a blast furnace wall provided by the present application can ensure the integrity and filling effect during the grouting repair of a damaged single water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a damaged water pipe on a blast furnace cooling wall in a lining method after a single water pipe of a blast furnace wall is damaged provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the structure of the main grouting net in the lining method after a single water pipe of a blast furnace wall is damaged provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of the structure of an auxiliary grouting net in a lining method after a single water pipe of a blast furnace wall is damaged provided in an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of opening a main lining hole and an auxiliary lining hole at the damaged water pipe on the cooling wall of a blast furnace in a lining method after a single water pipe of the blast furnace wall is damaged provided in an embodiment of the present application;

[0025] Figure 5 A structural schematic diagram of the main grouting net inserted into the main lining hole in the lining method after a single water pipe of a blast furnace wall is damaged provided in an embodiment of the present application;

[0026] Figure 6 A schematic diagram of the structure of inserting an auxiliary grouting net into an auxiliary lining hole in a lining method after a single water pipe of a blast furnace wall is damaged provided in an embodiment of the present application;

[0027] Figure 7 A schematic diagram of a partial cross-sectional structure of a method for lining a blast furnace wall after a single water pipe is damaged provided in an embodiment of the present application, in which a water inlet plugging rod, a water outlet plugging rod, and a cooling rod are inserted into a water inlet, a water outlet, the top end of a main grouting net of each main lining hole, the bottom end of a main grouting net, and a main compression net;

[0028] Figure 8 A schematic diagram of a partial cross-section structure of a method for lining a blast furnace wall after a single water pipe is damaged provided in an embodiment of the present application, in which a slurry hanging rod is inserted into an auxiliary compression net of each auxiliary lining hole;

[0029] Fig. 9 A schematic diagram of the partial cross-sectional structure of a blast furnace wall lining method after repair is completed after a single water pipe is damaged, as provided in an embodiment of the present application.

[0030] In the figure: 100, blast furnace cooling wall; 110, broken water pipe; 120, water inlet; 130, water outlet; 140, main lining hole; 150, auxiliary lining hole; 200, main grouting net; 210, main compression net; 220, auxiliary grouting net; 230, auxiliary compression net; 240, first positioning rope; 250, first moving knot; 260, metal guide head; 270, second positioning rope; 280, second moving knot; 300, water inlet blocking rod; 310, water outlet blocking rod; 320, cooling rod; 330, slurry hanging rod; 340, grouting hole; 350, sub-grouting hole; 400, blast furnace shell. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] The features and performance of the lining method after a single water pipe of the blast furnace wall is damaged according to the present application will be further described in detail below in conjunction with the embodiments.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the embodiment of the present application provides a lining method for a blast furnace wall after a single water pipe is damaged, which is used to make Figure 1 The broken water pipe 110 on the blast furnace cooling stave 100 shown in the figure is grouting so that the semi-fluid lining repair slurry can effectively flow to the broken gap and solidify into a structure with strong integrity, including the following steps:

[0040] Step 1: Prepare Figure 2 The cylindrical main grouting net 200 shown in FIG. Figure 3 The cylindrical auxiliary grouting net 220 shown in the figure, the main grouting net 200 is connected with three cylindrical main compression nets 210 arranged at intervals along the length direction thereof, the bottom outer wall of the auxiliary grouting net 220 is connected with eight auxiliary compression nets 230, the eight auxiliary compression nets 230 are divided into four groups and arranged at intervals along the circumference of the auxiliary grouting net 220, each group includes two auxiliary compression nets 230 arranged at intervals along the axial direction of the auxiliary grouting net 220, the main grouting net 200, the main compression net 210, the auxiliary grouting net 220, and the auxiliary compression net 230 are all made of high-strength materials resistant to high temperatures above 500°C so as to be fused with the semi-fluid lining repair slurry after high-temperature sintering;

[0041] Among them, the main grouting net 200 has mesh openings at the top and bottom, and the bottom of the main grouting net 200 is connected to a metal guide head 260 for guiding it to pass through the water inlet 120 of the broken water pipe 110 and extend out through the water outlet 130. The top and bottom of the main grouting net 200 and the mesh openings of each main compression net 210 are respectively connected to the first positioning rope 240, and a first movable knot 250 is provided in the middle of each first positioning rope 240. The first positioning rope 240 connected to the main compression net 210 is used to expand the corresponding main compression net 210 compressed and fitted on the main grouting net 200 when stretched; the auxiliary grouting net 220 is connected to a second positioning rope 270 connected to the corresponding auxiliary compression net 230, and a second movable knot 280 is provided in the middle of the second positioning rope 270. When the second positioning rope 270 is stretched, it is used to stretch and expand each corresponding auxiliary compression net 230.

[0042] Step 2: Open three main lining holes 140 arranged at intervals between the water inlet 120 and the water outlet 130 of the damaged water pipe 110 of the blast furnace cooling stave 100, the positions of the three main lining holes 140 correspond to the positions of the three main compression nets 210, and open five auxiliary lining holes 150 arranged at intervals on both sides of the damaged water pipe 110, so that each main lining hole 140 is provided with an auxiliary lining hole 150 on both sides of the top and bottom respectively;

[0043] Step 3, insert the metal guide head 260 at the bottom of the main grouting net 200 into the water inlet 120 of the damaged water pipe 110 and extend it through the water outlet 130 of the damaged water pipe 110, so that the first positioning ropes 240 connected to the top and bottom of the main grouting net 200 extend out of the water inlet 120 and the water outlet 130 respectively, and extend the first positioning ropes 240 connected to each main compression net 210 on the main grouting net 200 through each corresponding main lining hole 140 respectively, stretch each first positioning rope 240 so that the top and bottom openings of the main grouting net 200 extend out of the water inlet 120 and the water outlet 130 respectively and open, and expand each main compression net 210 and extend it out of the corresponding main lining hole 140 and then open, at this time, the first moving knots 250 on each first positioning rope 240 extend out of the corresponding water inlet 120, water outlet 130 and main lining hole 140 respectively;

[0044] Insert each cylindrical auxiliary grouting net 220 into each auxiliary lining hole 150 respectively, and stretch the second positioning rope 270 connected to each auxiliary grouting net 220 out of the corresponding auxiliary lining hole 150, so that the second positioning rope 270 drives the auxiliary compression net 230 corresponding to each auxiliary grouting net 220 to stretch and unfold, and make the second moving knot 280 provided with each second positioning rope 270 extend out of the corresponding auxiliary lining hole 150.

[0045] Step 4: Insert the water inlet plugging rod 300, the water outlet plugging rod 310, the cooling rod 320 and the slurry hanging rod 330 through the top opening of the main grouting net 200, the bottom opening of the main grouting net 200, the opening of the main compression net 210 and the opening of the auxiliary compression net 230 into the water inlet 120, the water outlet 130, the main lining hole 140 and the auxiliary lining hole 150, and make the water inlet plugging rod 300, the water outlet plugging rod 310, the cooling rod 320 and the slurry hanging rod 330 extend out of the corresponding water inlet 120, the water outlet The water inlet plugging rod 300, the water outlet plugging rod 310, the cooling rod 320 and the slurry hanging rod 330 are respectively welded and fixed on the blast furnace shell 400; wherein, the water inlet plugging rod 300, the water outlet plugging rod 310, the cooling rod 320 and the slurry hanging rod 330 are respectively provided with grouting holes 340 passing through both ends thereof, and the end of the cooling rod 320 extending out of the main lining hole 140 is also provided with two branch grouting holes 350 connected with the grouting holes 340;

[0046] Step 5: Introduce semi-fluid lining repair slurry into the sub-grouting holes 350 of the grouting holes 340 of the water inlet plugging rod 300, the water outlet plugging rod 310, the cooling rod 320 and the grouting rod 330, so that the semi-fluid lining repair slurry is introduced into the water inlet 120, the water outlet 130, each main lining hole 140 and each auxiliary lining hole 150 to stretch the main grouting net 200 and the auxiliary grouting net 220. When the main grouting net 200 is stretched, it drives each first positioning rope 240 to move so that the corresponding first moving knot 250 moves to the corresponding water inlet 120, the water outlet 130 and the main lining hole 140. At this time, continue to push the corresponding inlet The semi-fluid lining repair slurry is poured into the water inlet 120, the water outlet 130 and the main lining hole 140 for 0.8-1.2 min. When the auxiliary grouting net 220 is expanded, it drives each second positioning rope 270 to move so that the corresponding second moving knot 280 moves to the corresponding auxiliary lining hole 150. At this time, the semi-fluid lining repair slurry is continued to be poured into the corresponding auxiliary lining hole 150 for 0.8-1.2 min, so that the slurry bulges out from the mesh and fully fills the damaged water pipe, until a 5-15 cm slurry layer is formed on the outer wall of the blast furnace cooling wall 100 corresponding to the damaged water pipe 110 and consolidated into a whole, and excessive grouting and local thickening will not occur.

[0047] The lining method after a single water pipe of a blast furnace wall is damaged provided in an embodiment of the present application. The main lining holes 140 and auxiliary lining holes 150 are arranged at intervals at the damaged single water pipe 110 of the blast furnace cooling wall 100, and the main grouting net 200 and the auxiliary grouting net 220 are installed in the damaged water pipe 110 and the auxiliary lining hole 150 respectively. The main compression net 210 connected to the main grouting net 200 is stretched and opened to extend out of each main lining hole 140 by a first positioning rope 240, and the auxiliary compression net 230 connected to the auxiliary grouting net 220 is stretched and opened by a second positioning rope 270, and then By inserting the water inlet blocking rod 300, the water outlet blocking rod 310, the cooling rod 320 and the slurry hanging rod 330 through the top opening of the main grouting net 200, the bottom opening of the main grouting net 200, the opening of the main compression net 210 and the opening of the auxiliary compression net 230, and then inserting them into the water inlet 120, the water outlet 130, the main lining hole 140 and the auxiliary lining hole 150 with a reasonable grouting method, the slurry can be directed and fully fill the damaged water pipe 110 and cover the surrounding of the damaged wall without forming a thick area, so as to achieve the purpose of improving the integrity of the lining structure, protecting the damaged cooling wall and extending the life of the blast furnace.

[0048] By setting up the main grouting net 200 and the auxiliary grouting net 220, the slurry can flow to the predetermined filling position of the blast furnace during grouting and lining to form a reasonable filling morphology; the main grouting net 200, the main compression net 210, the auxiliary grouting net 220, and the auxiliary compression net 230 are made of high-temperature resistant materials to prevent them from being damaged by the high temperature of more than 500°C in the furnace after penetration, thereby ensuring the integrity and strength of the lining structure; by setting up the first positioning rope 240 and the second positioning rope 270, after the main grouting net 200 and the auxiliary grouting net 220 penetrate the damaged water pipe 110 and the auxiliary lining hole 150, the main compression net 210 can be stretched and stretched out of each main lining hole 140, and the auxiliary The auxiliary compression net 230 connected to the grouting net 220 is stretched and expanded to ensure that the slurry can be directional and fully fill the damaged water pipe 110; the first positioning rope 240 and the second positioning rope 270 are respectively provided with the first moving knot 250 and the second moving knot 280, which can drive the corresponding first positioning rope 240 and the second positioning rope 270 to move the first moving knot 250 and the second moving knot 280 when the main grouting net 200, the auxiliary grouting net 220, the main compression net 210 and the auxiliary compression net 230 are expanded by grouting to judge whether the grouting material expands the main grouting net 200, the auxiliary grouting net 220, the main compression net 210 and the auxiliary compression net 230 and fills the filling parts.

[0049] The water inlet blocking rod 300, the water outlet blocking rod 310, the cooling rod 320 and the slurry hanging rod 330 are respectively extended 5-8 cm outside the corresponding water inlet 120, the water outlet 130, the main lining hole 140 and the auxiliary lining hole 150, so that a 5-15 cm slurry layer can be formed on the outer wall of the blast furnace cooling wall 100 during grouting to protect the blast furnace cooling wall 100 around the damaged water pipe 110; the outer wall of one end of the cooling rod 320 inserted into the main lining hole 140 is designed with protrusions arranged at intervals to improve the effect of hanging the lining material on the surface of the cooling rod 320.

[0050] Eight auxiliary compression nets 230 are connected to the bottom outer wall of the auxiliary grouting net 220 and are arranged at intervals along its circumference. The purpose is to guide the grouting material to flow along the auxiliary compression net 230 in the longitudinal direction of the damaged wall and cover the surface of the auxiliary compression net 230, and finally combine with the slurry overflowing from the main grouting net 200 to form a complete structure to protect the damaged blast furnace cooling wall 100. It can also improve the uniformity of the radial flow of the grouting material in the blast furnace and avoid thickening due to uneven radial flow of the grouting material in the blast furnace.

[0051] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A method for lining a blast furnace wall after a single water pipe is damaged, characterized in that: The following steps are involved: A plurality of main lining holes arranged at intervals are opened between the water inlet and the water outlet of the damaged water pipe of the blast furnace cooling wall, and a plurality of auxiliary lining holes arranged at intervals are opened on both sides of the damaged water pipe; Insert the high temperature resistant cylindrical main grouting net through the water inlet of the damaged water pipe and then extend it through the water outlet of the damaged water pipe, and pull out the various cylindrical main compression nets connected at intervals on the main grouting net through the corresponding main lining holes respectively; insert the high temperature resistant cylindrical auxiliary grouting nets into the auxiliary lining holes respectively; Semi-fluid lining repair slurry is introduced into the water inlet, the water outlet, each of the main lining holes and each of the auxiliary lining holes to expand the main grouting network and the auxiliary grouting network until the semi-fluid lining repair slurry fully fills the damaged water pipe and then overflows and solidifies.

2. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 1, characterized in that: Both ends of the main grouting net and each of the main compression nets are respectively connected with a first positioning rope, which is used to unfold the corresponding main compression net and pull out the corresponding main lining hole when stretched.

3. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 2, characterized in that: The bottom of the main grouting net is connected with a metal guide head, and the metal guide head is used to guide the main grouting net to pass through the damaged water pipe and extend out through the water outlet.

4. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 2, characterized in that: A first movable knot is provided on the first positioning rope. When semi-fluid lining repair slurry is introduced into the water inlet, the water outlet and each of the main lining holes to expand the main grouting net, the first positioning rope is driven to move until each of the first movable knots moves to the corresponding water inlet, the water outlet and the main lining hole.

5. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 1, characterized in that: The auxiliary grouting net is connected to a plurality of auxiliary compression nets arranged at intervals along its circumference, and the auxiliary grouting net is also connected to a second positioning rope, which is used to stretch and unfold each corresponding auxiliary compression net when the second positioning rope is stretched.

6. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 5, characterized in that: A second moving knot is provided on the second positioning rope. Semi-fluid lining repair slurry is introduced into each of the auxiliary lining holes to expand the main grouting net, thereby driving the second positioning rope to move until each of the second moving knots moves into the corresponding auxiliary lining hole.

7. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 1, characterized in that: When the semi-fluid lining repair slurry is introduced into the water inlet, the water outlet, each of the main lining holes and each of the auxiliary lining holes, the water inlet plugging rod, the water outlet plugging rod, the cooling rod and the grouting rod are respectively inserted and fixed into the top of the main grouting net, the bottom of the main grouting net, the main compression net and the auxiliary compression net in the water inlet, the water outlet, the main lining hole and the auxiliary lining hole, and then the semi-fluid lining repair slurry is injected through the grouting holes on the water inlet plugging rod, the water outlet plugging rod, the cooling rod and the grouting rod.

8. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 7, characterized in that: The water inlet blocking rod, the water outlet blocking rod, the cooling rod and the slurry hanging rod extend out of the water inlet, the water outlet, the main lining hole and the auxiliary lining hole by 5-8 cm respectively.

9. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 1, characterized in that: When the semi-fluid lining repair slurry fully fills the damaged water pipe and overflows, the semi-fluid lining repair slurry is continuously introduced for more than 1 minute to form a 5-15 cm slurry layer on the outer wall of the blast furnace cooling wall corresponding to the damaged water pipe.

10. The method for lining a blast furnace wall after a single water pipe is damaged according to claim 1, characterized in that: The main grouting mesh, the main compression mesh and the auxiliary grouting mesh are made of materials that can withstand temperatures above 500°C.

Images