New type of marine waste heat economizer

Abstract

This utility model belongs to the field of waste heat recovery technology, and relates to a novel marine waste heat economizer. It includes an outer cylinder, with an upper smoke box and a lower smoke box connected to its upper and lower sides respectively. The upper and lower smoke boxes are respectively provided with a smoke outlet and a smoke inlet. Heat exchange tubes are installed inside the outer cylinder, and upper and lower headers corresponding to the heat exchange tubes are located outside the outer cylinder. The heat exchange tube assembly of this utility model adopts a spiral finned coil structure, which has significant advantages over traditional economizers, such as higher heat exchange efficiency and smaller size.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat recovery technology and relates to a new type of marine waste heat recovery economizer. Background Technology

[0002] During ship operation, the exhaust gas from the main engine is hot and plentiful, generating a large amount of waste heat. This waste heat is usually recovered using a waste heat economizer to improve the ship's energy efficiency, reduce operating costs, and also reduce thermal pollution to the environment.

[0003] For example, the existing Chinese invention patent application with publication number CN105841530A describes a marine heat pipe type waste heat economizer, which includes a heat pipe with a ribbed heat pipe bundle arranged around its outer side; a flue gas bypass cavity located at one end of the heat pipe, the inside of which is constructed with a sound-absorbing material; and a flue gas baffle valve located at the flue gas inlet to detect the outlet water temperature of the waste heat economizer.

[0004] The existing technology has the following technical defects:

[0005] Traditional waste heat economizers mainly use flue pipes or bare pipes and water pipes, which have low heat exchange efficiency, large size, and are not convenient for use on ships. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a new type of marine waste heat economic device.

[0007] The novel marine waste heat economizer of this utility model includes an outer cylinder, with an upper smoke box and a lower smoke box connected to the upper and lower parts of the outer cylinder, respectively. The upper smoke box and the lower smoke box are respectively provided with a smoke outlet and a smoke inlet. A heat exchange tube is provided inside the outer cylinder, and an upper header and a lower header corresponding to the heat exchange tube are provided outside the outer cylinder.

[0008] The heat exchange tube is uniformly provided with fins on its exterior, and the fins are spirally arranged on the heat exchange tube.

[0009] The outer cylinder is further provided with an inner cylinder, and the inner cylinder is provided with a coil support frame adapted to the heat exchange tubes. The heat exchange tubes are spirally wound on the inner cylinder through the coil support frame.

[0010] The bottom of the inner cylinder is provided with a cylinder support frame that is fixedly connected to the inner wall of the outer cylinder.

[0011] The inner cylinder is provided with a bypass flue, and the space between the outer wall of the inner cylinder and the inner wall of the outer cylinder forms the main flue. The upper part of the outer cylinder is provided with a baffle, and the baffle is provided with a flue gas regulating component.

[0012] The flue gas regulating component includes a bypass flue and a main flue disposed on the partition. The bypass flue and the main flue are respectively connected to the bypass flue and the main flue. A bypass baffle and a main baffle are respectively rotatably connected to the bypass flue and the main flue.

[0013] Both the bypass smoke baffle and the main smoke baffle are fixedly connected to the same adjusting shaft by a fixing block. The two ends of the adjusting shaft pass through the outer cylinder and are rotatably connected to it through the shaft support frame. One end of the adjusting shaft is connected to a drive component.

[0014] The bypass smoke baffle and the main smoke baffle are staggered at 90°.

[0015] The drive assembly includes a connecting block fixedly connected to a rotating shaft, a connecting rod fixedly connected to the connecting block, a hinge member hinged to the connecting rod, a cylinder fixedly connected to the hinge member, a hinge seat hinged to the bottom of the cylinder, and the hinge seat fixedly connected to the outer cylinder.

[0016] The outer cylinder is provided with ear plates.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The heat exchanger tube assembly of this invention adopts a spiral finned coil structure, which has obvious advantages such as higher heat exchange efficiency and smaller size compared with traditional economizers. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of an embodiment of the present utility model.

[0020] Figure 2 This is a second structural schematic diagram of an embodiment of the present invention.

[0021] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the image.

[0022] Figure 4 This is a cross-sectional view of an embodiment of the present invention.

[0023] Figure 5 This is a utility model Figure 4 Enlarged view of point B in the image.

[0024] Figure 6 This is a schematic diagram of the structure of the heat exchange tube and the inner cylinder in one embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the heat exchange tube and fins in one embodiment of the present invention.

[0026] In the diagram: 1. Smoke outlet; 2. Outer cylinder; 3. Upper header; 4. Ear plate; 5. Upper smoke box; 6. Adjusting shaft; 7. Shaft support frame; 8. Lower header; 9. Lower smoke box; 10. Smoke inlet; 11. Connecting block; 12. Connecting rod; 13. Hinge; 14. Cylinder; 15. Hinge seat; 16. Heat exchange tube; 17. Inner cylinder; 18. Bypass flue; 19. Cylinder support frame; 20. Partition plate; 21. Bypass smoke outlet; 22. Main smoke outlet; 23. Fixing block; 24. Main smoke baffle; 25. Coil support frame; 26. Fin. Detailed Implementation

[0027] Example 1

[0028] like Figures 1 to 7As shown, the novel marine waste heat economizer of this utility model includes an outer cylinder 2, with an upper smoke box 5 and a lower smoke box 9 connected to the upper and lower parts of the outer cylinder 2, respectively. The upper smoke box 5 and the lower smoke box 9 are respectively provided with a smoke outlet 1 and a smoke inlet 10. A heat exchange tube 16 is provided inside the outer cylinder 2, and an upper header 3 and a lower header 8 corresponding to the heat exchange tube 16 are provided outside the outer cylinder 2. Fins 26 are evenly arranged on the outside of the heat exchange tube 16, and the heat exchange tube 16 adopts a spiral fin coil structure, which greatly increases the heat exchange area and heat exchange efficiency. An inner cylinder 17 is also provided inside the outer cylinder 2, and the inner cylinder 17 has... A coil support frame 25 adapted to the heat exchange tube 16 is provided, and the heat exchange tube 16 is spirally wound on the inner cylinder 17 through the coil support frame 25. A cylinder support frame 19 fixedly connected to the inner wall of the outer cylinder 2 is provided at the bottom of the inner cylinder 17. A bypass flue 18 is provided on the inner cylinder 17, and the space between the outer wall of the inner cylinder 17 and the inner wall of the outer cylinder 2 forms the main flue. A baffle 20 is provided on the upper part of the outer cylinder 2, and a flue gas regulating component is provided on the baffle 20. The middle part of the inner cylinder 17 is hollow and together with the bypass flue 18 forms a bypass exhaust channel. When heat exchange is not required, the flue gas is controlled to be discharged from the bypass exhaust channel by the flue gas regulating component. To prevent dry burning, the flue gas regulating assembly includes a bypass flue 21 and a main flue 22 mounted on the partition 20. The bypass flue 21 and main flue 22 are respectively connected to the bypass flue 18 and the main flue. A bypass baffle plate and a main baffle plate 24 are rotatably connected to the bypass flue 21 and main flue 22, respectively. The opening and closing of the bypass baffle plate and the main baffle plate 24 controls whether the flue gas is exhausted through heat exchange. Both the bypass baffle plate and the main baffle plate 24 are fixedly connected to the same regulating shaft 6 via a fixing block 23. The two ends of the regulating shaft 6 pass through the outer cylinder 2 and are rotatably connected to it via a shaft support frame 7. One end of shaft 6 is connected to a drive assembly, which synchronously controls the opening and closing of the bypass smoke baffle and the main smoke baffle 24 through an adjusting shaft 6; the bypass smoke baffle and the main smoke baffle 24 are staggered at 90°, and when the adjusting shaft 6 is rotated, one of them closes and the other automatically opens; the drive assembly includes a connecting block 11 fixedly connected to the shaft, a connecting rod 12 fixedly connected to the connecting block 11, a hinge member 13 hinged to the connecting rod 12, a cylinder 14 fixedly connected to the hinge member 13, a hinge seat 15 hinged to the bottom of the cylinder 14, and the hinge seat 15 fixedly connected to the outer cylinder 2; the outer cylinder 2 is provided with an ear plate 4.

[0029] Working process or working principle:

[0030] When the flue gas enters the outer cylinder 2 through the inlet 10, if heat exchange is required, the cylinder 14 controls the rotating shaft 6 to rotate, thereby controlling the bypass baffle to close and the main baffle 24 to open. The flue gas rises from the space between the outer cylinder 2 and the inner cylinder 17 and passes through the heat exchange tube 16 fixed on the outer wall of the inner cylinder 17 for heat exchange before being discharged through the main flue 22. When heat exchange is not required, the cylinder 14 controls the rotating shaft 6 to rotate, thereby controlling the bypass baffle to open and the main baffle 24 to close. The flue gas rises from the middle of the inner cylinder 17 and is discharged through the bypass flue 18.

[0031] The heat exchange tubes of this invention, consisting of 16 sets, adopt a spiral finned coil structure, which has significant advantages over traditional economizers, such as higher heat exchange efficiency and smaller size.

[0032] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A novel marine waste heat economizer characterized in that: It includes an outer cylinder (2), an upper smoke box (5) and a lower smoke box (9) connected to the upper and lower parts of the outer cylinder (2), a smoke outlet (1) and a smoke inlet (10) respectively on the upper smoke box (5) and the lower smoke box (9), a heat exchange tube (16) inside the outer cylinder (2), and an upper header (3) and a lower header (8) corresponding to the heat exchange tube (16) outside the outer cylinder (2).

2. The novel marine waste heat economizer of claim 1, wherein: The heat exchange tube (16) is uniformly provided with fins (26) on its outside, and the fins (26) are spirally arranged on the heat exchange tube (16).

3. The novel marine waste heat economizer of claim 2, wherein: The outer cylinder (2) is further provided with an inner cylinder (17), and the inner cylinder (17) is provided with a coil support frame (25) adapted to the heat exchange tube (16). The heat exchange tube (16) is spirally wound on the inner cylinder (17) through the coil support frame (25).

4. The novel marine waste heat economizer of claim 3, wherein: The bottom of the inner cylinder (17) is provided with a cylinder support frame (19) that is fixedly connected to the inner wall of the outer cylinder (2).

5. The novel marine waste heat economizer of claim 4, wherein: The inner cylinder (17) is provided with a bypass flue (18), and the space between the outer wall of the inner cylinder (17) and the inner wall of the outer cylinder (2) forms the main flue. The upper part of the outer cylinder (2) is provided with a partition (20), and the partition (20) is provided with a flue gas regulating component.

6. The novel marine waste heat economizer of claim 5, wherein: The flue gas regulating component includes a bypass flue (21) and a main flue (22) disposed on the partition (20). The bypass flue (21) and the main flue (22) are respectively connected to the bypass flue (18) and the main flue. A bypass baffle plate and a main baffle plate (24) are respectively rotatably connected to the bypass flue (21) and the main flue (22).

7. The novel marine waste heat economizer according to claim 6, characterized in that: The bypass smoke baffle and the main smoke baffle (24) are both fixedly connected to the same adjusting shaft (6) by the fixing block (23). The two ends of the adjusting shaft (6) pass through the outer cylinder (2) and are rotatably connected to it through the shaft support frame (7). One end of the adjusting shaft (6) is connected to a drive component.

8. The novel marine waste heat economizer according to claim 7, characterized in that: The bypass smoke baffle and the main smoke baffle (24) are arranged at 90° angles to each other.

9. The novel marine waste heat economizer according to claim 8, characterized in that: The drive assembly includes a connecting block (11) fixedly connected to the rotating shaft, a connecting rod (12) fixedly connected to the connecting block (11), a hinge (13) hinged to the connecting rod (12), a cylinder (14) fixedly connected to the hinge (13), a hinge seat (15) hinged to the bottom of the cylinder (14), and the hinge seat (15) fixedly connected to the outer cylinder (2).

10. The novel marine waste heat economizer according to any one of claims 1-9, characterized in that: The outer cylinder (2) is provided with ear plates (4).

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