Air purging pipeline structure

Abstract

The utility model relates to an air purging pipeline structure which comprises a main pipe and a plurality of branches, each branch is composed of a front steel pipe section, a rear steel pipe section and a flexible telescopic pipe section, and a front flange plate and a rear flange plate are arranged at the front end and the rear end of each flexible telescopic pipe section. According to the technical scheme, a plurality of positioning rings are evenly arranged on the peripheral wall of the flexible telescopic pipe section in the length direction, a plurality of supporting lugs are evenly arranged on the outer edges of the positioning rings, front connecting lugs in one-to-one correspondence with the supporting lugs are arranged on the outer edge of the front flange plate, and rear connecting lugs in one-to-one correspondence with the supporting lugs are arranged on the outer edge of the rear flange plate. The supporting lugs are connected with the corresponding front connecting lugs and the corresponding rear connecting lugs through screws, and each screw is provided with a middle positioning nut set for clamping the corresponding supporting lug, a front positioning nut set for clamping the corresponding front connecting lug and a rear positioning nut set for clamping the corresponding rear connecting lug. According to the structure, the problems of large vibration and large noise during purging operation of the flexible telescopic pipe section are solved, and noise pollution is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler soot blowing devices, specifically to an air purging pipeline structure. Background Technology

[0002] During boiler operation, ash accumulation and coking on the heated surfaces are the most common phenomena. Soot blowing devices are used to clean areas inside the boiler that are prone to ash accumulation in order to maintain high heat transfer efficiency in the heat transfer zones. The air purging pipeline is an important component of the soot blowing device, with one end connected to the compressed air source and the other end connected to the boiler purging port.

[0003] Because there are many locations that need to be purged, the air purging pipeline consists of a main pipe and multiple branch pipes. For ease of installation, the branch pipes of the air purging pipeline are generally equipped with flexible and retractable pipe sections. However, this design causes the flexible and retractable pipe sections to vibrate significantly when compressed gas is used for purging operations, resulting in a lot of noise. Utility Model Content

[0004] The purpose of this invention is to provide a reasonably structured and reliable air purging pipeline structure to solve the problems of high vibration and noise during purging operations of flexible and telescopic pipe sections, thereby reducing noise pollution.

[0005] The technical solution of this utility model is:

[0006] An air purging pipeline structure includes a main pipe and multiple branch pipes. Each branch pipe consists of a front steel pipe section, a rear steel pipe section, and a flexible, expandable pipe section connecting the front and rear steel pipe sections. The flexible, expandable pipe section has a front flange and a rear flange at its front and rear ends. The key technical features are: multiple positioning rings are evenly distributed along the length of the outer peripheral wall of the flexible, expandable pipe section; multiple support ears are evenly distributed on the outer edge of each positioning ring; a front connecting ear corresponding to each support ear is distributed on the outer edge of the front flange; and a rear connecting ear corresponding to each support ear is distributed on the outer edge of the rear flange. The support ears are connected to their corresponding front and rear connecting ears using screws. The screws are equipped with an intermediate positioning nut assembly for clamping the support ears, a front positioning nut assembly for clamping the front connecting ears, and a rear positioning nut assembly for clamping the rear connecting ears.

[0007] In the aforementioned air purging pipeline structure, the number of supporting ears on the same positioning ring is three.

[0008] In the aforementioned air purging pipeline structure, the supporting ear, the front connecting ear, and the rear connecting ear are each provided with a U-shaped groove corresponding to the screw. The U-shaped grooves of the corresponding supporting ear, the front connecting ear, and the rear connecting ear are arranged in the same direction to facilitate installation.

[0009] In the aforementioned air purging pipeline structure, the front flange is provided with a front connection hole group corresponding to the front steel pipe section, and the rear flange is provided with a rear connection hole group corresponding to the rear steel pipe section.

[0010] The beneficial effects of this utility model are:

[0011] 1. Positioning rings and support ear structures are arranged on the flexible and telescopic pipe section. The connection structure between the support ear and the front and rear flanges is used to position the flexible and telescopic pipe section radially and axially, thereby reducing vibration and deformation under working conditions. This solves the problem of large vibration and noise when the flexible and telescopic pipe section is purged, thus reducing noise pollution.

[0012] 2. The U-shaped slots of the corresponding support ears, front connecting ears and rear connecting ears are arranged in the same direction, which makes it convenient for workers to assemble the assembled screw, intermediate positioning nut group, front positioning nut group and rear positioning nut group together in the support ears, front connecting ears and rear connecting ears, and then adjust the positioning, which is conducive to rapid assembly operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Sectional view along the AA direction;

[0015] Figure 3 yes Figure 1 Cross-sectional view along the BB direction.

[0016] In the diagram: 1. Rear steel pipe section, 2. Rear positioning nut assembly, 3. Middle positioning nut assembly, 4. Front positioning nut assembly, 5. Screw, 6. Front steel pipe section, 7. Flexible and telescopic pipe section, 8. Front connecting lug, 9. Rear connecting lug, 10. Support lug, 11. Main pipe, 12. U-shaped groove, 13. Positioning ring. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figures 1-3 As shown, the air purging pipeline structure includes a main pipe 11 and multiple branch pipes. The branch pipes consist of a front steel pipe section 6, a rear steel pipe section 1, and a flexible telescopic pipe section 7 connecting the front steel pipe section 6 and the rear steel pipe section 1. The flexible telescopic pipe section 7 is provided with a front flange and a rear flange at its front and rear ends.

[0019] The flexible, expandable tube section 7 has multiple positioning rings 13 evenly distributed along its length on its outer peripheral wall, and multiple support ears 10 evenly distributed on the outer edge of each positioning ring 13. The outer edge of the front flange has front connecting ears 8 corresponding to each support ear 10, and the outer edge of the rear flange has rear connecting ears 9 corresponding to each support ear 10. The support ears 10 are connected to their corresponding front connecting ears 8 and rear connecting ears 9 by screws 5. The screws 5 have an intermediate positioning nut group 3 for clamping the support ears 10, a front positioning nut group 4 for clamping the front connecting ears 8, and a rear positioning nut group 2 for clamping the rear connecting ears 9. In this embodiment, the number of support ears 10 on the same positioning ring 13 is three.

[0020] The supporting lug 10, the front connecting lug 8, and the rear connecting lug 9 are each provided with a U-shaped groove 12 corresponding to the screw 5. The U-shaped grooves 12 of the corresponding supporting lug 10, the front connecting lug 8, and the rear connecting lug 9 are arranged in the same direction to facilitate installation. The front flange is provided with a front connecting hole group corresponding to the front steel pipe section 6, and the rear flange is provided with a rear connecting hole group corresponding to the rear steel pipe section 1.

[0021] Working principle:

[0022] First, connect the rear steel pipe section 1 of each branch to the boiler purge port, and then use the front and rear flanges to connect the flexible and expandable pipe section 7 between the front steel pipe section 6 and the rear steel pipe section 1.

[0023] The assembled screw 5, intermediate positioning nut group 3, front positioning nut group 4 and rear positioning nut group 2 are clamped into the U-shaped slots 12 of the support ear 10, front connecting ear 8 and rear connecting ear 9. Then, the two intermediate positioning nuts of the intermediate positioning nut group 3 are tightened to clamp the support ear 10, the two front positioning nuts of the front positioning nut group 4 are tightened to clamp the front connecting ear 8, and the two rear positioning nuts of the rear positioning nut group 2 are tightened to clamp the rear connecting ear 9, thereby achieving radial and axial positioning of the flexible telescopic pipe section 7.

[0024] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. An air purge piping structure comprising a main pipe and a plurality of branch pipes, each of the branch pipes being composed of a front steel pipe section, a rear steel pipe section, and a flexible and stretchable pipe section connected between the front and rear steel pipe sections, the front and rear ends of the flexible and stretchable pipe section being provided with a front flange and a rear flange, characterized in that: The flexible and expandable pipe section has a plurality of positioning rings evenly distributed along its length on its outer peripheral wall. The outer edge of the positioning rings has a plurality of supporting ears evenly distributed. The outer edge of the front flange has a front connecting ear that corresponds to each supporting ear. The outer edge of the rear flange has a rear connecting ear that corresponds to each supporting ear. The supporting ears are connected to the corresponding front and rear connecting ears by screws. The screws are provided with an intermediate positioning nut group for clamping the supporting ears, a front positioning nut group for clamping the front connecting ears, and a rear positioning nut group for clamping the rear connecting ears. ​ 2. The air purge line structure according to claim 1, characterized by: The number of supporting ears on the same positioning ring is 3.

3. The air purge line structure according to claim 1, characterized by: The supporting ear, front connecting ear and rear connecting ear are respectively provided with U-shaped slots corresponding to the screws, and the U-shaped slots of the supporting ear, front connecting ear and rear connecting ear are arranged in the same direction.

4. The air purge line structure according to claim 1, characterized by: The front flange is provided with a front connection hole group corresponding to the front steel pipe section, and the rear flange is provided with a rear connection hole group corresponding to the rear steel pipe section.

Images