Novel structure of waste heat pipeline of efficient power generation waste heat recovery grate cooler

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a novel structure of a waste heat pipeline of an efficient power generation waste heat recovery grate cooler. According to the technical scheme, the device comprises a flange sleeve, an outer pipe and a lining, limiting rods are distributed on the outer sides of openings in the two ends of the outer pipe in an annular array mode, the lining is inserted into the middle of the interior of the outer pipe, through holes are formed in the lining in an annular array mode, positioning rings are arranged at the two ends of the outer pipe, and edges are arranged at the upper ends of the positioning rings; limiting holes are formed in the lower side of the edge in an annular array mode, the limiting holes are in butt joint with the limiting rods, grooves are formed in the upper side of the edge in an annular array mode, the grooves communicate with the limiting holes, fixing screws are arranged in the grooves, the two flange sleeves are connected to the two ends of the outer pipe in a sleeving mode correspondingly, and the two ends of the outer pipe are connected with the limiting rods in a sleeving mode correspondingly. A fixing frame is fixed to the middle of the outer end of the flange sleeve. The heat exchanger has the advantages of uniformly distributing hot air, reducing energy consumption, being stable in structure and ensuring the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a new structure of a waste heat pipeline of a grate cooler for efficiently recovering waste heat from power generation. Background Art

[0002] Grate cooler is an important main machine in the clinker burning system of cement plant. Its main function is to cool and transport cement clinker. At the same time, it provides hot air for rotary kiln and decomposition furnace, and is the main equipment for heat recovery in the burning system. The waste heat of grate cooler is often used for power generation.

[0003] In the waste heat power generation system of the grate cooler, the existing pipeline structure has uneven energy distribution, which easily leads to the problem of heat loss; and in order to improve the thermal insulation performance, the existing pipeline generally adopts a lining structure, and the split lining structure has poor stability and is easy to loosen after long-term use. Utility Model Content

[0004] The purpose of the utility model is to provide a new structure of waste heat pipe of a grate cooler for efficient power generation waste heat recovery, which has the advantages of uniformly distributing hot air, reducing energy consumption and stabilizing the structure, ensuring service life, and solving the problems in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new structure of a waste heat pipeline of a high-efficiency power generation waste heat recovery grate cooler, comprising a flange sleeve, an outer tube and an inner liner, the outer sides of the two end openings of the outer tube are distributed with limiting rods in a circular array, the inner liner is inserted in the middle of the inner part of the outer tube, a through hole is opened in the internal circular array of the inner liner, both ends of the outer tube are provided with positioning rings, and the upper end of the positioning ring is provided with an edge, the lower side circular array of the edge is provided with limiting holes, and the limiting holes are connected to the limiting rods, the upper side circular array of the edge is provided with grooves, and the grooves are connected to the limiting holes, a fixing screw is provided in the groove, and there are two flange sleeves in total, and the two flange sleeves are respectively sleeved on the two ends of the outer tube, and a fixing frame is fixed in the middle of the outer end of the flange sleeve.

[0006] When using the new structure of the waste heat pipeline of the high-efficiency power generation waste heat recovery grate cooler in the technical scheme, the inner liner is inserted from the open end of the outer tube, and then the two positioning rings are respectively inserted at the two ends of the outer tube. During the insertion process, the limit rod and the limit hole are docked. After insertion, the edge of the positioning ring fits the outer end of the outer tube opening, and the sealing ring fits the pressure groove to complete the press-fit seal. Then, the fixing screw is installed in the top screw hole of the limiting rod through the groove thread, and the fixing is completed by pressing down the nut of the fixing screw. The two flange sleeves are respectively sleeved on the two ends of the outer tube, and then the flange sleeve is rotated so that the stud thread on the lower side is installed in the metal ring, and the edge of the positioning ring is pressed down by the fixing frame inside the flange sleeve to further limit the position.

[0007] Preferably, a screw hole is formed at the outer end of the limit rod, and the lower end of the fixing screw is threadedly installed in the screw hole. The fixing screw is connected to the screw hole to fix the positioning ring on the outer tube.

[0008] Preferably, assembly grooves are provided at the middle of both ends of the liner, and metal rings are fixed in the assembly grooves to accommodate the metal rings.

[0009] Preferably, a stud is fixed at the middle of the lower side of the fixing frame, and the stud is threadedly installed in the corresponding metal ring. The flange sleeve is fixed and limited by the threaded connection between the stud and the metal ring.

[0010] Preferably, both ends of the liner are provided with press grooves, the lower end of the positioning ring is fixed with a sealing ring, and the sealing ring is inserted into the press groove to improve the sealing performance of the joint through the connection between the sealing ring and the press groove.

[0011] Preferably, the lower side of the fixing frame fits the edge of the positioning ring, and the outer annular array of the outer end of the flange sleeve is provided with bolt holes. The fixing frame is pressed down to further fix the positioning ring, and the bolt holes facilitate the connection of the flange sleeve with the external pipeline.

[0012] Preferably, the positioning ring is inserted into the open end of the outer tube, and the positioning ring and the through hole are staggered. The positioning ring is inserted to improve the fit, and the staggered distribution facilitates gas circulation.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: during installation, the liner is inserted from the open end of the outer tube, and then the two positioning rings are respectively inserted at the two ends of the outer tube. During the insertion process, the limit rod is docked with the limit hole. After insertion, the edge of the positioning ring fits the outer end of the outer tube opening, and the sealing ring fits the pressure groove to complete the press-fit seal. Then the fixing screw is installed in the top screw hole of the limiting rod through the groove thread, and the fixation is completed by pressing down the nut of the fixing screw. The two flange sleeves are respectively sleeved on the two ends of the outer tube, and then the flange sleeve is rotated so that the stud thread on the lower side is installed in the metal ring, and the edge of the positioning ring is further limited by pressing down the fixing frame inside the flange sleeve. The device completes the docking operation of the external pipeline through the bolt hole of the flange sleeve and the bolt, and completes the diversion by the hot gas passing through the multiple through holes of the liner, so that it is evenly distributed and energy consumption is reduced. At the same time, the detachable liner is pressed down by the positioning ring, fixed by the fixing screw thread, and fixed by pressing down the flange sleeve. The three types of fixing clamping ensure its stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 3This is a schematic diagram of the flange sleeve structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the lining structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the positioning ring structure of the utility model.

[0019] In the figure: 1. flange sleeve; 2. outer tube; 3. bolt hole; 4. positioning ring; 5. lining; 6. fixing screw; 7. fixing frame; 8. stud; 9. through hole; 10. assembly groove; 11. metal ring; 12. pressing groove; 13. groove; 14. sealing ring; 15. limiting hole; 16. edge; 17. limiting rod. DETAILED DESCRIPTION

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

[0021] Embodiment 1

[0022] See also Figures 1 to 5 The utility model provides an embodiment: a new structure of a waste heat pipeline of a high-efficiency power generation waste heat recovery grate cooler, comprising a flange sleeve 1, an outer tube 2 and an inner liner 5, the outer sides of the two end openings of the outer tube 2 are both distributed with limiting rods 17 in an annular array, both ends of the outer tube 2 are provided with positioning rings 4, and the upper end of the positioning ring 4 is provided with an edge 16, the lower side annular array of the edge 16 is provided with limiting holes 15, and the limiting holes 15 are connected to the limiting rods 17, the upper side annular array of the edge 16 is provided with grooves 13, and the grooves 13 are connected to the limiting holes 15, and a fixing screw 6 is provided in the groove 13.

[0023] Furthermore,

[0024] The outer end of the limiting rod 17 is provided with a screw hole, and the lower end of the fixing screw rod 6 is threadedly installed in the screw hole. The fixing screw rod 6 is connected to the screw hole to fix the positioning ring 4 on the outer tube 2.

[0025] Furthermore,

[0026] A stud 8 is fixed at the middle of the lower side of the fixing frame 7, and the stud 8 is threadedly installed in the corresponding metal ring 11. The flange sleeve 1 is fixed and limited by the threaded connection between the stud 8 and the metal ring 11.

[0027] Furthermore,

[0028] The lower side of the fixing frame 7 is in contact with the edge 16 of the positioning ring 4, and the outer annular array of the outer end of the flange sleeve 1 is provided with bolt holes 3. The fixing frame 7 presses down the edge 16 to further fix the positioning ring 4, and the bolt holes 3 facilitate the connection of the flange sleeve 1 with the external pipeline.

[0029] Embodiment 2

[0030] See also Figures 1 to 5 The utility model provides an embodiment: a new structure of a waste heat pipeline of a high-efficiency power generation waste heat recovery grate cooler, comprising a flange sleeve 1, an outer tube 2 and an inner liner 5, wherein two flange sleeves 1 are provided, and the two flange sleeves 1 are respectively sleeved on both ends of the outer tube 2, a fixing frame 7 is fixed at the middle of the outer end of the flange sleeve 1, the inner liner 5 is inserted in the middle of the inner part of the outer tube 2, and a through hole 9 is opened in a circular array inside the inner liner 5.

[0031] Furthermore,

[0032] The lining 5 is provided with assembly grooves 10 in the middle of both ends, and a metal ring 11 is fixed in the assembly groove 10 , so that the metal ring 11 is received in the assembly groove 10 .

[0033] Furthermore,

[0034] The outer sides of both ends of the liner 5 are provided with pressing grooves 12, and the lower end of the positioning ring 4 is fixed with a sealing ring 14, and the sealing ring 14 is inserted into the pressing groove 12, and the sealing performance of the joint is improved by the connection between the sealing ring 14 and the pressing groove 12.

[0035] Furthermore,

[0036] The positioning ring 4 is inserted into the open end of the outer tube 2, and the positioning ring 4 and the through hole 9 are staggered. The insertion of the positioning ring 4 improves the fit, and the staggered distribution facilitates gas circulation.

[0037] During operation of the utility model, during installation, the lining 5 is inserted from the open end of the outer tube 2, and then the two positioning rings 4 are respectively inserted at the two ends of the outer tube 2. During the insertion process, the limiting rod 17 is docked with the limiting hole 15. After insertion, the edge 16 of the positioning ring 4 fits the outer end of the opening of the outer tube 2, and the sealing ring 14 fits the pressing groove 12 to complete the press-fit seal. Then, the fixing screw 6 is threadedly installed in the top screw hole of the limiting rod 17 through the groove 13, and the fixing is completed by pressing down the nut of the fixing screw 6. The two flange sleeves 1 are respectively sleeved on the two ends of the outer tube 2, and then the flange sleeve 1 is rotated so that the stud 8 on the lower side is threadedly installed in the metal ring 11. The edge 16 of the positioning ring 4 is further limited by pressing down the inner fixing frame 7 of the flange sleeve 1. The device completes the docking operation of the external pipeline through the bolt hole 3 of the flange sleeve 1 in conjunction with the bolt.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel structure of a waste heat pipe of a high-efficiency power generation waste heat recovery grate cooler, comprising a flange sleeve (1), an outer pipe (2) and an inner liner (5), characterized in that: Limiting rods (17) are distributed in an annular array on the outer sides of the openings at both ends of the outer tube (2). The inner liner (5) is inserted in the middle of the inner part of the outer tube (2). Through holes (9) are provided in an annular array inside the inner liner (5). Positioning rings (4) are provided at both ends of the outer tube (2). The upper end of the positioning ring (4) is provided with an edge (16). Limiting holes (15) are provided in an annular array below the edge (16). The limiting holes (15) are connected to the limiting rods (17). A groove (13) is provided in an annular array above the edge (16). The groove (13) is connected to the limiting holes (15). A fixing screw (6) is provided in the groove (13). Two flange sleeves (1) are provided in total. The two flange sleeves (1) are respectively sleeved on the two ends of the outer tube (2). A fixing frame (7) is fixed in the middle of the outer end of the flange sleeve (1).

2. According to claim 1, a novel structure of a waste heat pipeline of a high-efficiency power generation waste heat recovery grate cooler is characterized by: The outer end of the limiting rod (17) is provided with a screw hole, and the lower end of the fixing screw rod (6) is threadedly installed in the screw hole.

3. According to the novel structure of the waste heat pipeline of the grate cooler for high-efficiency power generation waste heat recovery according to claim 1, it is characterized by: The inner lining (5) is provided with assembly grooves (10) at the middle of both ends, and metal rings (11) are fixed in the assembly grooves (10).

4. According to claim 3, a novel structure of a waste heat pipeline of a high-efficiency power generation waste heat recovery grate cooler is characterized in that: A stud (8) is fixed at the middle of the lower side of the fixing frame (7), and the stud (8) is threadedly installed in the corresponding metal ring (11).

5. According to claim 1, a novel structure of waste heat pipe of a high-efficiency power generation waste heat recovery grate cooler is characterized by: The outer sides of both ends of the liner (5) are provided with pressing grooves (12), and a sealing ring (14) is fixed at the lower end of the positioning ring (4), and the sealing ring (14) is inserted into the pressing groove (12).

6. According to claim 1, a novel structure of waste heat pipe of a high-efficiency power generation waste heat recovery grate cooler is characterized by: The lower side of the fixing frame (7) is in contact with the edge (16) of the positioning ring (4), and the outer annular array of bolt holes (3) is provided on the outer end of the flange sleeve (1).

7. According to claim 1, a novel structure of waste heat pipe of a high-efficiency power generation waste heat recovery grate cooler is characterized by: The positioning ring (4) is inserted into the open end of the outer tube (2), and the positioning ring (4) and the through hole (9) are staggered.

Images