A ceramic lined wear-resistant pipe

Abstract

The present invention discloses a ceramic-lined wear-resistant pipe, comprising a main pipe sleeve and a secondary pipe sleeve, wherein the main pipe sleeve and the secondary pipe sleeve are nested with each other, a wear-resistant inner pipe is sleeved between the main pipe sleeve and the secondary pipe sleeve, a fixed steel frame is embedded on the inner wall of the wear-resistant inner pipe, mounting grooves are evenly provided on the inner wall of the wear-resistant inner pipe, a limiting hole connected to the mounting groove is provided on the fixed steel frame, a sliding key is slidably connected between the two sides of the inner wall of the mounting groove, and a mounting cover is embedded on the outer wall of the wear-resistant inner pipe and directly below the mounting groove. The present invention pushes the connecting seat upwards through the sliding key, and the connecting seat pushes the ceramic block upwards, so that the ceramic block continues to fill the limiting hole, the inner surface of the fixed steel frame is no longer uneven, and coal powder can continue to be transmitted, the ceramic block and the steel frame are added to the inner wall of the pipe, the wear resistance of the inner wall of the pipe is increased, and there is no need to replace the pipe frequently, saving the cost of the production device.

Description

Technical Field

[0001] The invention relates to the technical field of wear-resistant pipes, in particular to a ceramic-lined wear-resistant pipe. Background Art

[0002] The pulverized coal pipeline of the boiler in a thermal power plant must be wear-resistant and leak-proof, anti-corrosion, rain-proof, and anti-freeze-proof. The key point is anti-wear and anti-corrosion. The wear-resistant elbows of the pulverized coal pipeline are particularly severely worn and have long been the focus of maintenance in power plants. The comprehensive performance of the pipeline system, especially the wear resistance, is directly related to the operating cost and economic benefits of the entire power plant.

[0003] The existing coal powder transportation pipeline has low wear resistance. Long-term coal powder transportation will cause great wear on the inner wall of the pipeline, and the pipeline will crack and damage. Therefore, the pipeline needs to be replaced frequently, which greatly increases the production cost. In addition, the entire pipeline needs to be replaced during replacement, which is inconvenient, time-consuming and labor-intensive.

[0004] Therefore, it is necessary to provide a ceramic lined wear-resistant pipe to solve the above technical problems. Summary of the invention

[0005] The object of the present invention is to provide a ceramic lined wear-resistant pipe to solve the problems of low wear resistance and short service life in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ceramic lined wear-resistant pipe, comprising a main pipe sleeve and a secondary pipe sleeve, the main pipe sleeve and the secondary pipe sleeve are nested with each other, a wear-resistant inner pipe is sleeved between the main pipe sleeve and the secondary pipe sleeve, a fixed steel frame is embedded on the inner wall of the wear-resistant inner pipe, mounting grooves are evenly opened on the inner wall of the wear-resistant inner pipe, a limiting hole connected to the mounting groove is opened on the fixed steel frame, a sliding key is slidably connected between the two sides of the inner wall of the mounting groove, a mounting cover is embedded on the outer wall of the wear-resistant inner pipe and directly below the mounting groove, a spring is evenly sleeved between the top of the mounting cover and the bottom of the sliding key from left to right, the top of the sliding key is fixedly connected to a connecting seat, a ceramic block is placed on the top of the connecting seat, and the top of the ceramic block extends to the inside of the limiting hole.

[0007] Preferably, the mounting cover is fixedly connected to the wear-resistant inner tube by screws, the fixed steel frame is tubular, and a sliding groove cooperating with the sliding key is provided on the mounting groove.

[0008] Preferably, a fixed bottom clamp is sleeved between the lower surfaces of the main pipe sleeve and the auxiliary pipe sleeve, and bolts are fixedly connected to both sides of the top of the fixed bottom clamp.

[0009] Preferably, a fixed top clamp is provided between the upper surfaces of the main pipe sleeve and the auxiliary pipe sleeve and at the top of the fixed bottom clamp, and the fixed top clamp is fixedly connected to the fixed bottom clamp by bolts and nuts.

[0010] Preferably, the ceramic block is in the shape of a hexagonal pyramid, the connecting seat is in the shape of an inverted hexagonal pyramid, the limiting hole is in the shape of a hexagonal pyramid, and the mounting cover is fixedly connected to the wear-resistant inner tube by screws.

[0011] Preferably, the ceramic block is in the shape of a quadrangular pyramid, the connecting seat is in the shape of an inverted quadrangular pyramid, and the limiting hole is in the shape of a quadrangular pyramid.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) The ceramic lined wear-resistant pipe is used to transport coal powder inside the wear-resistant inner pipe. During the transportation process, the coal powder only rubs against the ceramic block and the fixed steel frame, so that the pipe wall of the wear-resistant inner pipe will not directly contact the coal powder. The ceramic block is wear-resistant. After long-term use, the surface of the ceramic block close to the pipe is slightly worn, the height is reduced, and the volume becomes smaller. The spring pushes the sliding key upward, the sliding key pushes the connecting seat upward, and the connecting seat pushes the ceramic block upward, so that the ceramic block continues to fill the limit hole. The inner surface of the fixed steel frame is no longer uneven, and the coal powder can continue to be transported. The ceramic block and the steel frame are added to the inner wall of the pipe, which increases the wear resistance of the inner wall of the pipe. There is no need to replace the pipe frequently, saving the cost of production equipment.

[0014] (2) The ceramic lined wear-resistant pipe is manufactured by unscrewing the nut from the bolt, disassembling the fixed top clamp, removing the fixed top clamp and the fixed bottom clamp from the outside of the main pipe sleeve and the auxiliary pipe sleeve, and then disassembling the main pipe sleeve and the auxiliary pipe sleeve to determine the position of the cracked ceramic block, unscrewing the screws on the installation cover, disassembling the installation cover, pulling the sliding key downward to remove it from the inside of the installation groove, and then the connecting seat can be taken out from the inside of the installation groove. The limiting hole is in the shape of a hexagonal pyramid, which is narrow at the top and wide at the bottom, so that the ceramic block can be taken out from the inside of the limiting hole, and a new ceramic block is placed on the top of the connecting seat and placed into the inside of the installation groove. The sliding key is aligned with the sliding grooves on both sides of the installation groove and the sliding key is pushed forward. The ceramic block is stuck in the limiting hole, and the installation cover is fixed by screws to complete the installation and replacement of the ceramic block. The ceramic wear-resistant layer assembled by the steel frame has a better anti-cracking effect, and after individual ceramic blocks are cracked, they can be replaced and installed individually without dismantling and replacing the entire pipe, saving maintenance costs and extending the service life of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a ceramic lined wear-resistant pipe provided by the present invention;

[0016] Figure 2 for Figure 1 A schematic enlarged view of the structure at position A shown;

[0017] Figure 3 for Figure 1 The structure schematic of the fixed steel frame shown is an expanded top view;

[0018] Figure 4 A schematic structural diagram of another preferred embodiment of the ceramic lined wear-resistant pipe provided by the present invention.

[0019] In the figure: 1. Main pipe sleeve; 2. Sub-pipe sleeve; 3. Fixed bottom clamp; 4. Nut; 5. Bolt; 6. Fixed top clamp; 7. Wear-resistant inner pipe; 8. Fixed steel frame; 9. Installation slot; 10. Sliding key; 11. Connecting seat; 12. Ceramic block; 13. Screw; 14. Installation cover; 15. Spring; 16. Limit hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-4 , an embodiment of the present invention: a ceramic lined wear-resistant pipe, comprising a main pipe sleeve 1 and a secondary pipe sleeve 2, the main pipe sleeve 1 and the secondary pipe sleeve 2 are nested with each other, a wear-resistant inner pipe 7 is sleeved between the inside of the main pipe sleeve 1 and the secondary pipe sleeve 2, a fixed steel frame 8 is embedded on the inner wall of the wear-resistant inner pipe 7, a mounting groove 9 is evenly opened on the inner wall of the wear-resistant inner pipe 7, a limiting hole 16 connected to the mounting groove 9 is opened on the fixed steel frame 8, a sliding key 10 is slidably connected between the two sides of the inner wall of the mounting groove 9, a mounting cover 14 is embedded on the outer wall of the wear-resistant inner pipe 7 and directly below the mounting groove 9, a spring 15 is evenly sleeved from left to right between the top of the mounting cover 14 and the bottom of the sliding key 10, a connecting seat 11 is fixedly connected to the top of the sliding key 10, a ceramic block 12 is placed on the top of the connecting seat 11, and the top of the ceramic block 12 extends to the inside of the limiting hole 16.

[0022] The mounting cover 14 is fixedly connected to the wear-resistant inner tube 7 by means of screws 13 . The fixed steel frame 8 is tubular, and a sliding groove for cooperating with the sliding key 10 is provided on the mounting groove 9 .

[0023] A fixed bottom clamp 3 is sleeved between the lower surfaces of the main pipe sleeve 1 and the auxiliary pipe sleeve 2 , and bolts 5 are fixedly connected to both sides of the top of the fixed bottom clamp 3 .

[0024] A fixed top clamp 6 is provided between the upper surfaces of the main pipe sleeve 1 and the auxiliary pipe sleeve 2 and at the top of the fixed bottom clamp 3 . The fixed top clamp 6 is fixedly connected to the fixed bottom clamp 3 through bolts 5 and nuts 4 .

[0025] The ceramic block 12 is in the shape of a hexagonal pyramid, the connecting seat 11 is in the shape of an inverted hexagonal pyramid, the limiting hole 16 is in the shape of a hexagonal pyramid, the mounting cover 14 is fixedly connected to the wear-resistant inner tube 7 by screws 13, and the limiting hole 16 is narrow at the top and wide at the bottom, so as to limit the ceramic block 12 which is narrow at the top and wide at the bottom, so that the ceramic block 12 can be clamped with the limiting hole 16 without being pushed out of the limiting hole 16.

[0026] Another embodiment provided by the present invention is as follows: Figure 4 As shown: the ceramic block (12) is in the shape of a quadrangular pyramid, the connecting seat (11) is in the shape of an inverted quadrangular pyramid, and the limiting hole (16) is in the shape of a quadrangular pyramid.

[0027] Working principle: When in use, coal powder is transported inside the wear-resistant inner tube 7. During the transportation process, the coal powder only rubs against the ceramic block 12 and the fixed steel frame 8, so that the tube wall of the wear-resistant inner tube 7 will not directly contact the coal powder. The ceramic block 12 is wear-resistant. After long-term use, the surface of the ceramic block 12 close to the pipeline is slightly worn, the height is reduced, and the volume becomes smaller. The spring 15 pushes the sliding key 10 upward, and the sliding key 10 pushes the connecting seat 11 upward. The connecting seat 11 pushes the ceramic block 12 upward, so that the ceramic block 12 continues to fill the limiting hole 16, and the inner surface of the fixed steel frame 8 is no longer uneven, and the coal powder can continue to be transported. When individual ceramic blocks 12 are cracked after long-term use, the nut 4 can be unscrewed from the bolt 5, the fixed top clamp 6 can be removed, the fixed top clamp 6 and the fixed bottom clamp 3 can be removed from the outside of the main pipe sleeve 1 and the auxiliary pipe sleeve 2, and then the main pipe sleeve 1 and the auxiliary pipe sleeve 2 is disassembled, the position of the cracked ceramic block 12 is determined, the screws 13 on the mounting cover 14 are unscrewed, the mounting cover 14 is removed, the sliding key 10 is pulled downward to be taken out from the inside of the mounting groove 9, and then the connecting seat 11 can be taken out from the inside of the mounting groove 9. The limiting hole 16 is in the shape of a hexagonal pyramid, narrow at the top and wide at the bottom, and the ceramic block 12 can be taken out from the inside of the limiting hole 16, and a new ceramic block 12 is placed on the top of the connecting seat 11 and placed into the inside of the mounting groove 9, the sliding key 10 is aligned with the two side slide grooves of the mounting groove 9 to push the sliding key 10 forward, the ceramic block 12 is stuck in the limiting hole 16, the mounting cover 14 is fixed by the screws 13, the installation and replacement of the ceramic block 12 is completed, the main pipe sleeve 1 and the auxiliary pipe sleeve 2 are nested in the outside of the wear-resistant inner pipe 7, and then the main pipe sleeve 1 and the auxiliary pipe sleeve 2 are fixed by the fixed bottom clamp 3 and the fixed top clamp 6, the installation is completed, and the coal powder can be transported continuously.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A ceramic lined wear-resistant pipe, comprising a main pipe sleeve (1) and a secondary pipe sleeve (2), characterized in that: The main pipe sleeve (1) and the auxiliary pipe sleeve (2) are nested with each other, a wear-resistant inner pipe (7) is sleeved between the main pipe sleeve (1) and the auxiliary pipe sleeve (2), a fixed steel frame (8) is embedded on the inner wall of the wear-resistant inner pipe (7), mounting grooves (9) are evenly opened on the inner wall of the wear-resistant inner pipe (7), a limiting hole (16) connected to the mounting groove (9) is opened on the fixed steel frame (8), and a sliding key (16) is slidably connected between the two sides of the inner wall of the mounting groove (9) 10), a mounting cover (14) is embedded on the outer wall of the wear-resistant inner tube (7) and located directly below the mounting groove (9), a spring (15) is evenly sleeved between the top of the mounting cover (14) and the bottom of the sliding key (10) from left to right, the top of the sliding key (10) is fixedly connected to a connecting seat (11), a ceramic block (12) is placed on the top of the connecting seat (11), and the top of the ceramic block (12) extends to the inside of the limiting hole (16); The installation cover (14) is fixedly connected to the wear-resistant inner tube (7) by means of screws (13); the fixed steel frame (8) is tubular; and a sliding groove for cooperating with the sliding key (10) is provided on the installation groove (9); The limiting hole (16) is narrow at the top and wide at the bottom, and limits the narrow at the top and wide at the bottom ceramic block (12), so that the ceramic block (12) can be clamped with the limiting hole (16) without being pushed out of the limiting hole (16); After the surface of the ceramic block (12) close to the pipe is slightly worn, the spring (15) can push the sliding key (10) upward, the sliding key (10) pushes the connecting seat (11) upward, and the connecting seat (11) pushes the ceramic block (12) upward, so that the ceramic block (12) continues to fill the limiting hole (16).

2. The ceramic lined wear-resistant pipe according to claim 1, characterized in that: A fixed bottom clamp (3) is sleeved between the lower surfaces of the main pipe sleeve (1) and the auxiliary pipe sleeve (2), and bolts (5) are fixedly connected to both sides of the top of the fixed bottom clamp (3).

3. A ceramic lined wear-resistant pipe according to claim 2, characterized in that: A fixed top clamp (6) is provided between the upper surfaces of the main pipe sleeve (1) and the auxiliary pipe sleeve (2) and at the top of the fixed bottom clamp (3); the fixed top clamp (6) is fixedly connected to the fixed bottom clamp (3) via bolts (5) and nuts (4).

4. The ceramic lined wear-resistant pipe according to claim 1, characterized in that: The ceramic block (12) is in the shape of a hexagonal pyramid, the connecting seat (11) is in the shape of an inverted hexagonal pyramid, and the limiting hole (16) is in the shape of a hexagonal pyramid.

5. The ceramic lined wear-resistant pipe according to claim 1, characterized in that: The ceramic block (12) is in the shape of a quadrangular pyramid, the connecting seat (11) is in the shape of an inverted quadrangular pyramid, and the limiting hole (16) is in the shape of a quadrangular pyramid.

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