CN212644566U

CN212644566U - Coil pipe coal economizer for coal-fired boiler

Info

Publication number: CN212644566U
Application number: CN202020326108.0U
Authority: CN
Inventors: 秦敬虎; 孙维; 丁朋飞; 束强; 郭彦龙; 王力
Original assignee: Nanjing Canuo Energy Equipment Co ltd
Current assignee: Nanjing Ganuo Aoneng Boiler Group Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-03-02
Anticipated expiration: 2030-03-16

Abstract

The utility model belongs to the technical field of coal fired boiler, especially, a coal fired boiler coiled pipe economizer. The utility model can separate the dust through the dust filtering net, ensure that the dust can not fall on the surface of the coiled pipe, after certain dust is accumulated on the dust filter screen, the first threaded inner cylinder and the second threaded inner cylinder are rotated, then the first threaded inner cylinder and the second threaded inner cylinder are separated from the outer wall of the screw rod column, then the sliding rods can be moved to enable the two sliding rods to move oppositely, then the dust filter net hooked by the hook is loosened, thereby the dust filter net is taken down, then a new dust filter screen is replaced, the first threaded inner cylinder and the second threaded inner cylinder are arranged on the side wall of the screw rod column to complete the support of the sliding rod, thereby the dust filter screen is firmly installed, a large amount of dust contained in the flue gas can not enter the economizer any more, the device avoids serious dust accumulation on the surfaces of the parallel elbow pipes of the economizer, improves the heat exchange efficiency of the heat transfer pipe, and ensures the operation safety of the whole system.

Description

Coil pipe coal economizer for coal-fired boiler

Technical Field

The utility model relates to a coal fired boiler technical field specifically is a coal fired boiler coiled pipe economizer.

Background

The economizer is a device which is arranged at the lower part of a flue at the tail part of a boiler and used for recovering the waste heat of exhausted smoke, heats the water fed by the boiler into a heating surface of saturated water under the pressure of a steam drum, and is called as the economizer because the economizer absorbs the heat of high-temperature smoke, reduces the exhaust temperature of the smoke, saves energy and improves the efficiency. The steel pipe type economizer is not limited by pressure, can be used as a boiling type economizer and is generally made of carbon steel pipes with the outer diameter of 32-51 mm. Fins and fins are sometimes added to the tube to improve heat transfer. The steel pipe type economizer consists of parallel elbow pipes (commonly called coiled pipes) which are horizontally arranged. The coal economizer is mainly suitable for the industry, and is gradually popularized to the agriculture and the related industries for business.

There are the following problems:

at present, in the use of an economizer, smoke discharged before a dust remover contains a large amount of dust, so that the surface of a parallel elbow pipe of the economizer is seriously accumulated with dust, the heat exchange efficiency of a heat transfer pipe is reduced, and the operation safety of the whole system is often influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a coal fired boiler coiled pipe economizer has solved present in the use to the economizer, and the flue gas of discharging fume does not contain a large amount of dusts in the flue gas before the dust remover, and the parallelly connected elbow pipe surface deposition that leads to the economizer is serious, has reduced the heat exchange efficiency of heat-transfer pipe, often can influence the problem of the security of entire system operation.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a coal fired boiler coiled pipe economizer, includes mounting bracket and connecting cylinder, mounting bracket middle part fixed mounting has the coiled pipe, the equal fixedly connected with link of mounting bracket both sides inner wall end, the sliding tray has been seted up to link one end, sliding connection has the slide bar in the sliding tray, slide bar one end both sides are all rotated and are connected with the rotation strip, the one end fixedly connected with screw rod post of rotation strip, the connecting cylinder top is rotated and is connected with first screw thread inner tube, the connecting cylinder bottom is rotated and is connected with second screw thread inner tube, the equal fixedly connected with slip post of first screw thread inner tube and second screw thread inner tube one end, and slip post sliding connection is inside the connecting cylinder, the equal fixedly connected with couple of front end of slide bar, two fixed mounting has the dust screen between the couple.

As an optimal technical scheme of the utility model, mounting bracket middle part both ends fixedly connected with gusset plate, and the thickness of gusset plate is three to eight centimetres.

As a preferred technical scheme of the utility model, the equal fixed mounting in both ends of slide bar has the support rotating turret, it is connected with the supporting wheel to support rotating turret one end rotation, and the supporting wheel supports in the sliding tray.

As an optimal technical scheme of the utility model, the one end of mounting bracket is provided with the import collection case, the import collection case is connected with the coiled pipe through seven pipelines.

As a preferred technical scheme of the utility model, two reinforcements of mounting bracket one end fixedly connected with, two reinforcement fixed connection is at import collection case lateral wall.

As a preferred technical scheme of the utility model, there is the export collection case import collection case through the pipe connection, and export collection case and import between the collection case link to each other through six pipelines.

As an optimized technical scheme of the utility model, first screw thread inner tube and second screw thread inner tube distance sum are less than the nearest distance between two screw rod posts.

Compared with the prior art, the utility model provides a coal fired boiler coiled pipe economizer possesses following beneficial effect:

1. the coal-fired boiler serpentine pipe economizer can separate dust through the dust filtering net to ensure that the dust does not fall on the surface of the serpentine pipe, after certain dust is accumulated on the dust filter screen, the first threaded inner cylinder and the second threaded inner cylinder are rotated, then the first threaded inner cylinder and the second threaded inner cylinder are separated from the outer wall of the screw rod column, then the sliding rods can be moved to enable the two sliding rods to move oppositely, then the dust filter net hooked by the hook is loosened, thereby the dust filter net is taken down, then a new dust filter screen is replaced, the first threaded inner cylinder and the second threaded inner cylinder are arranged on the side wall of the screw rod column to complete the support of the sliding rod, thereby the dust filter screen is firmly installed, a large amount of dust contained in the flue gas can not enter the economizer any more, the device avoids serious dust accumulation on the surfaces of the parallel elbow pipes of the economizer, improves the heat exchange efficiency of the heat transfer pipe, and ensures the operation safety of the whole system.

2. This coal fired boiler coiled pipe economizer supports the rotating turret through setting up, then supports the rotating turret and passes through the supporting wheel support in the sliding tray for the removal that the slide bar can be smooth and easy guarantees that first screw thread inner tube and second screw thread inner tube install the mobility of in-process slide bar on the screw rod post.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;

fig. 3 is a sectional view of the connecting cylinder of the present invention.

In the figure: 1. a mounting frame; 2. a reinforcing plate; 3. a serpentine tube; 4. a connecting frame; 5. a sliding groove; 6. a slide bar; 7. supporting the rotating frame; 8. rotating the strip; 9. a screw column; 10. a connecting cylinder; 11. a first threaded inner barrel; 12. a second threaded inner barrel; 13. a sliding post; 14. hooking; 15. a dust filter screen; 16. an inlet header; 17. an outlet header; 18. a reinforcement.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, in this embodiment: a coal-fired boiler coiled pipe economizer comprises a mounting frame 1 and a connecting cylinder 10, a coiled pipe 3 is fixedly mounted in the middle of the mounting frame 1, the inner wall ends of two sides of the mounting frame 1 are fixedly connected with connecting frames 4, one end of each connecting frame 4 is provided with a sliding groove 5, a sliding rod 6 is slidably connected in each sliding groove 5, two sides of one end of each sliding rod 6 are rotatably connected with rotating strips 8, one end of each rotating strip 8 is fixedly connected with a screw rod column 9, the top end of the connecting cylinder 10 is rotatably connected with a first threaded inner cylinder 11, the bottom end of the connecting cylinder 10 is rotatably connected with a second threaded inner cylinder 12, one ends of the first threaded inner cylinder 11 and the second threaded inner cylinder 12 are fixedly connected with sliding columns 13, the sliding columns 13 are slidably connected inside the connecting cylinder 10, hooks 14 are fixedly connected to the front ends of the sliding rods 6, and a dust; the sliding performance of the sliding rod 6 in the sliding groove 5 is ensured, and the screw rod columns 9 are matched and installed in the first threaded inner barrel 11 and the second threaded inner barrel 12.

In the embodiment, two ends of the middle part of the mounting rack 1 are fixedly connected with reinforcing plates 2, and the thickness of each reinforcing plate 2 is three to eight centimeters; the overall stability of the mounting bracket 1 can be ensured by the reinforcing plate 2. The two ends of the sliding rod 6 are fixedly provided with a supporting rotating frame 7, one end of the supporting rotating frame 7 is rotatably connected with a supporting wheel, and the supporting wheel is supported in the sliding groove 5; the support rotating frame 7 is supported in the sliding groove 5 through the support wheels, so that the stability of the sliding rod 6 in the moving process is ensured. An inlet header 16 is arranged at one end of the mounting rack 1, and the inlet header 16 is connected with the coiled pipe 3 through seven pipelines; the economizer may be used through an inlet header 16. One end of the mounting frame 1 is fixedly connected with two reinforcing members 18, and the two reinforcing members 18 are fixedly connected to the side wall of the inlet header 16; the inlet header 16 is securely mounted by two stiffeners 18. The inlet header 16 is connected with an outlet header 17 through a pipeline, and the outlet header 17 is connected with the inlet header 16 through six pipelines; normal use of the economizer can be ensured by the outlet header 17. The sum of the distances between the first threaded inner cylinder 11 and the second threaded inner cylinder 12 is less than the closest distance between the two screw columns 9; the slide bar 6 is supported by the screw post 9 by means of the first and second threaded

inner cylinders

11 and 12.

The utility model discloses a theory of operation and use flow: firstly, the dust can be separated through the dust filter screen 15, the dust can not fall on the surface of the coiled pipe 3, certain dust is accumulated on the dust filter screen 15, then the first threaded inner cylinder 11 and the second threaded inner cylinder 12 are rotated, then the first threaded inner cylinder 11 and the second threaded inner cylinder 12 are separated from the outer wall of the screw rod column 9, then the sliding rods 6 can be moved, so that the two sliding rods 6 move oppositely, then the dust filter screen 15 hooked by the hook 14 is loosened, the dust filter screen 15 is taken down, then the new dust filter screen 15 is replaced, the first threaded inner cylinder 11 and the second threaded inner cylinder 12 are installed on the side wall of the screw rod column 9, the sliding rods 6 are supported, and the dust filter screen 15 is firmly installed.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a coal fired boiler coiled pipe economizer, includes mounting bracket (1) and connecting cylinder (10), its characterized in that: the middle of the mounting rack (1) is fixedly provided with a coiled pipe (3), the two side inner wall ends of the mounting rack (1) are fixedly connected with a connecting rack (4), one end of the connecting rack (4) is provided with a sliding groove (5), the sliding groove (5) is connected with a sliding rod (6) in a sliding way, the two sides of one end of the sliding rod (6) are rotatably connected with a rotating strip (8), one end of the rotating strip (8) is fixedly connected with a screw rod column (9), the top end of the connecting cylinder (10) is rotatably connected with a first thread inner cylinder (11), the bottom end of the connecting cylinder (10) is rotatably connected with a second thread inner cylinder (12), one ends of the first thread inner cylinder (11) and the second thread inner cylinder (12) are fixedly connected with a sliding column (13), the sliding column (13) is slidably connected inside the connecting cylinder (10), the front end of the sliding rod (6) is fixedly connected with, a dust filtering net (15) is fixedly arranged between the two hooks (14).

2. The coal-fired boiler serpentine economizer of claim 1, characterized in that: the mounting bracket (1) middle part both ends fixedly connected with gusset plate (2), and the thickness of gusset plate (2) is three to eight centimetres.

3. The coal-fired boiler serpentine economizer of claim 1, characterized in that: the two ends of the sliding rod (6) are fixedly provided with supporting rotating frames (7), one end of each supporting rotating frame (7) is rotatably connected with a supporting wheel, and the supporting wheels are supported in the sliding grooves (5).

4. The coal-fired boiler serpentine economizer of claim 1, characterized in that: one end of the mounting rack (1) is provided with an inlet header (16), and the inlet header (16) is connected with the coiled pipe (3) through seven pipelines.

5. The coal-fired boiler serpentine economizer according to claim 1 or 4, characterized in that: two reinforcements (18) of mounting bracket (1) one end fixedly connected with, two reinforcement (18) fixed connection is in import collection case (16) lateral wall.

6. The coal-fired boiler serpentine economizer of claim 5, characterized in that: the inlet header (16) is connected with an outlet header (17) through a pipeline, and the outlet header (17) is connected with the inlet header (16) through six pipelines.

7. The coal-fired boiler serpentine economizer of claim 1, characterized in that: the sum of the distances between the first threaded inner cylinder (11) and the second threaded inner cylinder (12) is less than the closest distance between the two screw columns (9).