Water jacket type steam generator

Abstract

The utility model provides a water jacket type steam generator, which relates to the technical field of heat energy power process, and comprises a generator shell, and a lower header of a circular ring structure is fixedly mounted in the lower part of the generator shell; the right side of the lower collecting box is connected with a water inlet; the water inlet protrudes out of the outer wall of the generator shell; an upper collecting box of a circular structure is fixedly installed in the upper portion of the generator shell. Through rotation of the cleaning gear ring and the ash track cleaning piece, the ash track cleaning piece rotates around the water pipe, the ash track cleaning piece scrapes and cleans ash tracks on the outer wall of the water pipe in a surrounding mode, and the problem that when an existing water jacket type steam generator is used, due to the fact that most of the inner walls of evaporation pipelines adopted by the steam generator are smooth, the inner walls of the evaporation pipelines are not smooth is solved. And due to the smooth inner wall, the water-steam separation space of the water flow in the pipeline is small, and the heat exchange effect of the water flow in the pipeline is poor.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal power processes, and particularly to a water jacket type steam generator. Background Art

[0002] A water jacket type steam generator is a mechanical device that uses the heat energy of fuel or other energy sources to heat water into hot water or steam. The water jacket type steam generator can be modularized and started with one key, is not subject to special equipment supervision, and does not require a dedicated boiler operator, and has great development space in the same industry.

[0003] When the existing water jacket type steam generator is in use, since the inner walls of the evaporation pipelines adopted by the steam generator are mostly smooth, the smooth inner walls result in a smaller water-vapor separation space inside the pipelines, causing a poor heat exchange effect of the water flow inside the pipelines. Moreover, most of the water collecting tanks of the existing water jacket type steam generators adopt a rectangular box structure, which has the disadvantages of large volume, small volume, and strong water pressure. Therefore, the present invention improves a steam generator that can strengthen the steam-water separation effect and improve the water pressure bearing strength. Summary of the Invention

[0004] Embodiments of the present disclosure relate to a water jacket type steam generator. By setting the upper header and the lower header as annular structures, while meeting the standard specifications, the structure is more reasonable. The upper and lower headers with annular structures can effectively buffer the impact of water pressure and improve the bearing strength of the upper and lower headers. Inner threads are opened in the evaporation water pipes. By opening the inner threads, the water flow can be better heated by the external flue gas, and when the water flow flows, the inner threads can break the gas film interface, strengthen the steam-water separation, and extend the steam-water separation space.

[0005] In the first aspect of the present disclosure, a water jacket type steam generator is provided, specifically including: a generator housing, which is composed of upper, middle and lower parts, and the middle position of the generator housing is fixedly connected to the upper and lower parts through bolts; a circular ring-shaped lower header is fixedly installed inside the lower position of the generator housing; a water inlet is connected to the right side of the lower header; the water inlet protrudes from the outer wall of the generator housing; a circular ring-shaped upper header is fixedly installed inside the upper position of the generator housing; a steam outlet is connected to the middle position at the rear side of the top of the upper header; two safety valve outlets are also connected to the top of the upper header; a circle of butt-welded pipes is fixedly installed in a circumferential arrangement at the bottom of the upper header and the top of the lower header; a disk-shaped embedding plate is fixedly installed on the circumferential outer wall of the butt-welded pipe; a butt-sealing sleeve is also sleeved and slidably installed on the butt-welded pipe; a cylindrical driven conversion column is fixed on the circumferential outer wall of the butt-sealing sleeve; a disk-shaped mounting plate is fixedly installed at the outer end of the butt-sealing sleeve; a restoring spring A is jointly embedded between the mounting plate and the embedding plate; an annular installation groove is formed inside the butt-sealing sleeve; a sealing rubber ring made of rubber is fixedly installed inside the installation groove; a driving motor is fixedly installed on the outer wall of the upper position of the generator housing; a driving shaft is fixedly connected to the output shaft of the driving motor; a driving gear is fixedly installed at both the upper and lower ends of the driving shaft; a smoke exhaust outlet is connected to the left side of the lower position of the generator housing.

[0006] In at least some embodiments, an evaporation water pipe is fixedly installed between every two adjacent butt-welded pipes above and below through saddle welding; a threaded groove is formed inside the evaporation water pipe; a cleaning gear is rotatably installed on the circumferential outer wall of the evaporation water pipe; a baffle is fixedly installed inside the cleaning gear; a set of ash trace cleaning parts is slidably installed between every two adjacent cleaning gears above and below; the ash trace cleaning parts are in an arc shape, and the inner side wall of the ash trace cleaning parts is in contact with the outer wall of the evaporation water pipe.

[0007] In at least some embodiments, a restoring spring B is embedded between the outer side of the ash trace cleaning parts and the baffle; a power conversion ring is rotatably installed on the circumferential inner walls of the upper and lower parts of the generator housing; a driven gear ring is fixedly installed on the circumferential outer wall of the power conversion ring; the driven gear ring is meshed and connected with the driving gear; a driving gear ring is fixedly installed on the circumferential inner wall of the power conversion ring; the driving gear ring is meshed and connected with the cleaning gear.

[0008] In at least some embodiments, a spiral power conversion groove is further formed on the circumferential inner wall of the power conversion ring; the outer end of the driven conversion column is also in a hemispherical structure, and the hemispherical part of the driven conversion column is slidably installed inside the power conversion groove; when the driving motor drives the driving shaft and the driving gear to rotate, the driving gear will cooperate with the driven gear ring to drive the power conversion ring and the driving gear ring to rotate.

[0009] In at least some embodiments, when the driving gear ring rotates, the driving gear ring will drive the ash trace cleaning member to rotate under the action of meshing with the cleaning gear; when the ash trace cleaning member rotates, the inner wall of the ash trace cleaning member will perform circumferential friction with the outer wall of the evaporation water pipe; when the power conversion ring rotates, the spiral power conversion groove on the power conversion ring will also cooperate with the driven conversion column to drive the docking seal sleeve to slide outward along the docking welding pipe.

[0010] The present invention provides a water jacket type steam generator, which has the following beneficial effects:

[0011] 1. By fixedly welding the two docking welding pipes and the water pipe in a saddle type, compared with the traditional insertion type welding, the present invention can effectively reduce the opening diameter during installation, reduce the stagnant water space during later use, and by arranging a water pipe with multiple microchannels and providing threaded grooves inside the water pipe, the air film interface can be broken, the steam-water separation can be effectively strengthened, the steam-water separation space can be extended, and the heat exchange capacity between the flue gas and the medium inside the water pipe can be enhanced. In this way, under the same working conditions, the steam dryness of this steam generator can be increased by about 30% compared with that of the traditional steam generator.

[0012] 2. The present invention provides a docking seal sleeve and a sealing rubber ring. By sleeving the docking seal sleeve and the sealing rubber ring on the welded connection part of the docking welding pipe and the water pipe, the cooperation between the docking seal sleeve and the sealing rubber ring further strengthens the seal of the connection part between the docking welding pipe and the water pipe. Therefore, when cracks and damages occur at the welded connection part, it is not easy for water to overflow, double guaranteeing the sealing performance of the water pipe and reducing the occurrence of water leakage due to weld damage.

[0013] 3. When the present invention can open the docking seal sleeve to repair the welded connection part of the water pipe and the docking welding pipe, through the cooperation of multiple structures, the cleaning gear ring and the ash trace cleaning member are synchronously controlled to rotate, so that the ash trace cleaning member rotates around the water pipe, and the ash trace cleaning member performs circumferential scraping and cleaning on the ash traces existing on the outer wall of the water pipe, avoiding the continuous accumulation of ash traces on the outer wall of the water pipe, resulting in an increase in the wall thickness of the water pipe, affecting the heating effect of the flue gas on the medium inside the water pipe, and leading to low evaporation efficiency of the medium inside the water pipe. And the cleaning work can be realized during the daily inspection and maintenance process, and the cleaning work does not require dedicated time and manpower. Description of the Drawings

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below.

[0015] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0016] In the accompanying drawings:

[0017] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0018] Figure 2 A schematic diagram showing the structure of the generator housing of the present application in a partially opened state is shown;

[0019] Figure 3 A schematic diagram showing the structure of the upper header and the lower header of the present application is shown;

[0020] Figure 4 A schematic diagram showing the structure of the evaporation water pipe and the power conversion ring of the present application is shown;

[0021] Figure 5 A schematic diagram showing the structure of the butt-welding pipe and the water pipe of the present application is shown;

[0022] Figure 6 A schematic diagram showing the structure of the power conversion ring and the power conversion groove of the present application is shown;

[0023] Figure 7 A schematic diagram showing the structure of the evaporation water pipe and the ash trace cleaning member of the present application is shown;

[0024] Figure 8 A schematic diagram showing the half-sectional structure of the evaporation water pipe of the present application is shown;

[0025] List of reference numerals

[0026] 1. Generator housing; 2. Driving motor; 3. Driving shaft; 4. Driving gear; 5. Smoke exhaust port; 6. Lower header; 7. Water inlet; 8. Upper header; 9. Steam port; 10. Safety valve port;

[0027] 11. Butt-welding pipe; 12. Embedded disk; 13. Butt-sealing sleeve; 14. Driven conversion column; 15. Mounting disk; 16. Restoration spring A; 17. Mounting groove; 18. Sealing rubber ring; 19. Evaporation water pipe; 20. Cleaning gear;

[0028] 21. Baffle; 22. Ash trace cleaning member; 23. Restoration spring B; 24. Power conversion ring; 25. Driven gear ring; 26. Driving gear ring; 27. Power conversion groove. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0030] Please refer to Figures 1 to 8 :

[0031] Embodiment 1:

[0032] The present invention provides a water jacket type steam generator, including: a generator housing 1, which is composed of upper, middle and lower parts, and the middle part of the generator housing 1 is fixedly connected to the upper and lower parts by bolts; a circular ring-shaped lower header 6 is fixedly installed inside the lower part of the generator housing 1; a water inlet 7 is connected to the right side of the lower header 6. Since the lower header 6 is arranged in a circular ring shape, when water enters the interior of the water inlet 7, the water flow will tangentially enter the lower header 6. Compared with the vertical water inlet of the traditional water jacket type steam generator, this water inlet method of the present steam generator can significantly reduce the water circulation resistance; the water inlet 7 protrudes from the outer wall of the generator housing 1; a circular ring-shaped upper header 8 is fixedly installed inside the upper part of the generator housing 1; a steam port 9 is connected to the center position at the rear of the top of the upper header 8; two safety valve ports 10 are also connected to the top of the upper header 8; a circle of butt-welded pipes 11 are fixedly installed in a circumferential arrangement at the bottom of the upper header 8 and the top of the lower header 6; a disc-shaped embedding plate 12 is fixedly installed on the circumferential outer wall of the butt-welded pipe 11; a butt-sealing sleeve 13 is also sleeved and slidably installed on the butt-welded pipe 11; a cylindrical driven conversion column 14 is fixed on the circumferential outer wall of the butt-sealing sleeve 13; a disc-shaped mounting plate 15 is fixedly installed at the outer end of the butt-sealing sleeve 13; a restoring spring A 16 is jointly embedded between the mounting plate 15 and the embedding plate 12; an annular installation groove 17 is opened inside the butt-sealing sleeve 13; a sealing rubber ring 18 made of rubber is fixedly installed inside the installation groove 17.

[0033] Connect an external water pump through the water inlet 7, so that the water pump injects water into the interior of the lower header 6 by using the water inlet 7, and the water flow is divided through the lower header 6 and enters a plurality of microchannel evaporation water pipes 19 and the upper header 8. At this time, inject flue gas from the top of the present water jacket type steam generator through an external pipeline, so as to heat and evaporate the water flowing inside the evaporation water pipe 19 by using the heat of the flue gas, cause the water flow to undergo an evaporation reaction under the influence of heating, and conduct the generated steam into the corresponding external steam diversion pipeline through the steam port 9 to complete the steam generation work.

[0034] Embodiment 2, on the basis of Embodiment 1, a driving motor 2 is fixedly installed on the outer wall at the upper part of the generator housing 1; a driving shaft 3 is fixedly connected to the output shaft of the driving motor 2; a driving gear 4 is fixedly installed at both the upper and lower ends of the driving shaft 3; a smoke exhaust port 5 is connected to the left side at the lower part of the generator housing 1; a evaporation water pipe 19 is fixedly installed between every two adjacent butt-welded pipes 11 by saddle welding; a threaded groove is formed inside the evaporation water pipe 19; a cleaning gear 20 is rotatably installed on the circumferential outer wall of the evaporation water pipe 19; a baffle 21 is fixedly installed inside the cleaning gear 20; a set of ash trace cleaning members 22 are slidably installed between every two adjacent upper and lower cleaning gears 20; the ash trace cleaning member 22 is in an arc structure, and the inner side wall of the ash trace cleaning member 22 is in contact with the outer wall of the evaporation water pipe 19; a restoring spring B23 is embedded between the outer side of the ash trace cleaning member 22 and the baffle 21; a power conversion ring 24 is rotatably installed on the circumferential inner walls of the upper and lower parts of the generator housing 1; a driven gear ring 25 is fixedly installed on the circumferential outer wall of the power conversion ring 24.

[0035] When it is necessary to inspect the welds of the evaporation water pipe 19 and the butt-welded pipe 11, the middle part of the generator housing 1 is removed, and then the driving motor 2 is started, so that the driving motor 2 drives the driving shaft 3 and the driving gear 4 to rotate, and the driving gear 4 drives the power conversion ring 24 and the driving gear ring 26 to rotate under the action of meshing with the driven gear ring 25. The power conversion ring 24 rotates, and by means of the sliding installation of the driven conversion column 14 in the spiral power conversion groove 27, the butt joint sealing sleeve 13 is driven to slide outward along the butt-welded pipe 11, so that the butt joint sealing sleeve 13 cancels the sealing protection of the weld positions of the evaporation water pipe 19 and the butt-welded pipe 11 by sliding outward, thereby facilitating the staff to observe the weld positions and facilitating to know whether the welds are cracked and leaking.

[0036] Embodiment 3. On the basis of Embodiment 2, the driven gear ring 25 is meshed and connected with the driving gear 4; the driving tooth ring 26 is fixedly installed on the circumferential inner wall of the power conversion ring 24; the driving tooth ring 26 is meshed and connected with the cleaning gear 20; a spiral power conversion groove 27 is further formed on the circumferential inner wall of the power conversion ring 24; the outer end of the driven conversion column 14 is also in a hemispherical structure, and the hemispherical part of the driven conversion column 14 is slidably installed inside the power conversion groove 27; when the driving motor 2 drives the driving shaft 3 and the driving gear 4 to rotate, the driving gear 4 will cooperate with the driven gear ring 25 to drive the power conversion ring 24 and the driving tooth ring 26 to rotate; when the driving tooth ring 26 rotates, the driving tooth ring 26 will drive the ash trace cleaning member 22 to rotate under the action of meshing with the cleaning gear 20; when the ash trace cleaning member 22 rotates, the inner wall of the ash trace cleaning member 22 will perform circumferential friction with the outer wall of the evaporation water pipe 19; when the power conversion ring 24 rotates, the spiral power conversion groove 27 on the power conversion ring 24 will also cooperate with the driven conversion column 14 to drive the docking seal sleeve 13 to slide outward along the docking welding pipe 11.

[0037] When the driving tooth ring 26 rotates, the driving tooth ring 26 will drive it and the ash trace cleaning member 22 to rotate under the action of meshing with the cleaning gear 20, so that the ash trace cleaning member 22 realizes the friction cleaning of the ash trace on the outer wall of the evaporation water pipe 19 by rotation, and the restoring spring B23 will apply a thrust, so that the inner wall of the ash trace cleaning member 22 continuously receives force from the outer wall of the evaporation water pipe 19, ensuring the friction cleaning effect of the ash trace cleaning member 22 on the ash trace on the outer wall of the evaporation water pipe 19.

[0038] Working principle:

[0039] In use, connect an external water pump and a water supply pipeline through the water inlet 7, an external pressure relief pipeline through the safety valve port 10, an external steam diversion pipeline through the steam port 9, and an external flue gas diversion pipeline through the smoke exhaust port 5. Then, use the water pump to inject water into the interior of the lower header 6 through the water inlet 7, so that the water flow is divided through the lower header 6 and enters the evaporation water pipes 19 of multiple microchannels and the upper header 8. At this time, inject flue gas from the top of this water jacket type steam generator through an external flue gas supply pipeline, so as to heat and evaporate the water flowing inside the evaporation water pipes 19 by using the heat of the flue gas, cause the water flow to undergo an evaporation reaction under the influence of heating, and introduce the generated steam into the corresponding external steam diversion pipeline through the steam port 9. At the same time, the used flue gas will be discharged into the flue gas diversion pipeline through the smoke exhaust port 5. Thus, the steam generation work is completed. When it is necessary to inspect the welds of the evaporation water pipes 19 and the butt welding pipes 11, remove the generator housing 1 in the middle, and then start the drive motor 2, so that the drive motor 2 drives the drive shaft 3 and the drive gear 4 to rotate, and the drive gear 4 drives the power conversion ring 24 and the driving ring gear 26 to rotate under the action of meshing with the driven ring gear 25. The power conversion ring 24 rotates, and under the action of the driven conversion column 14 slidingly installed in the spiral power conversion groove 27, drives the docking seal sleeve 13 to slide outward along the butt welding pipe 11, so that the docking seal sleeve 13 cancels the sealing protection of the weld positions of the evaporation water pipes 19 and the butt welding pipes 11 by sliding outward, thereby facilitating the staff to observe the weld positions and facilitating to know whether the welds are cracked and leaking. And when the driving ring gear 26 rotates, the driving ring gear 26 drives it and the ash trace cleaning member 22 to rotate under the action of meshing with the cleaning gear 20, so that the ash trace cleaning member 22 rotates to frictionally clean the ash traces on the outer wall of the evaporation water pipe 19, and the restoring spring B23 applies a thrust, so that the inner wall of the ash trace cleaning member 22 continuously bears force on the outer wall of the evaporation water pipe 19, ensuring the friction cleaning effect of the ash trace cleaning member 22 on the ash traces on the outer wall of the evaporation water pipe 19.

[0040] In this article, the following points need attention:

[0041] 1. The attached drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0042] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0043] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. Water-jacketed steam generator, comprising: A generator housing (1), the generator housing (1) consisting of an upper portion, a middle portion and a lower portion, and the middle portion of the generator housing (1) is fixedly connected to the upper and lower portions by bolts; characterized in that a lower header (6) of an annular structure is fixedly installed inside the lower portion of the generator housing (1); a water inlet (7) is connected to the right side of the lower header (6); the water inlet (7) protrudes from the outer wall of the generator housing (1); an upper header (8) of an annular structure is fixedly installed inside the upper portion of the generator housing (1); a steam port (9) is connected to the center of the top rear side of the upper header (8); two safety valve ports (10) are also connected to the top of the upper header (8); the bottom of the upper header (8) is connected to the lower header (6) A circle of butt-welded tubes (11) are fixedly mounted on the top of the butt-welded tubes (11) in a circumferential arrangement; a disc-shaped embedding disk (12) is fixedly mounted on the circumferential outer wall of the butt-welded tubes (11); a butt-welded sealing sleeve (13) is also slidably mounted on the butt-welded tubes (11); a driven conversion column (14) with a cylindrical structure is fixedly mounted on the circumferential outer wall of the butt-welded sealing sleeve (13); a mounting disk (15) with a disc-shaped structure is fixedly mounted on the outer end of the butt-welded sealing sleeve (13); a restoring spring A (16) is embedded between the mounting disk (15) and the embedding disk (12); a mounting groove (17) with a circular ring structure is provided inside the butt-welded sealing sleeve (13); and a sealing rubber ring (18) is fixedly mounted inside the mounting groove (17).

2. The water-jacketed steam generator according to claim 1, characterized in that: A drive motor (2) is fixedly mounted on the outer wall of the upper portion of the generator housing (1); a drive shaft (3) is fixedly connected to the output shaft of the drive motor (2); a drive gear (4) is fixedly mounted on both upper and lower ends of the drive shaft (3); and a smoke exhaust port (5) is connected to the left side of the lower portion of the generator housing (1).

3. The water-jacketed steam generator according to claim 2, characterized in that: An evaporation water pipe (19) is fixedly installed between each two upper and lower adjacent butt-welded pipes (11) by riding-type welding; a threaded groove is provided inside the evaporation water pipe (19); and a cleaning gear (20) is rotatably installed on the circumferential outer wall of the evaporation water pipe (19).

4. The water-jacketed steam generator according to claim 3, characterized in that: A baffle (21) is fixedly mounted on the inner side of the cleaning gear (20); a group of ash cleaning members (22) is slidably mounted between each two cleaning gears (20) adjacent to each other; the ash cleaning members (22) are in an arc-shaped structure, and the inner side wall of the ash cleaning member (22) contacts the outer wall of the evaporating water pipe (19).

5. The water-jacketed steam generator according to claim 4, characterized in that: A restoring spring B (23) is embedded between the outer side of the ash cleaning member (22) and the baffle (21); a power conversion ring (24) is rotatably mounted on the circumferential inner walls of the upper and lower parts of the generator housing (1); and a driven gear ring (25) is fixedly mounted on the circumferential outer wall of the power conversion ring (24).

6. The water-jacketed steam generator according to claim 5, characterized in that: The driven gear ring (25) is meshed and connected with the driving gear (4); a driving gear ring (26) is fixedly mounted on the circumferential inner wall of the power conversion ring (24); and the driving gear ring (26) is meshed and connected with the cleaning gear (20).

7. The water-jacketed steam generator according to claim 6, characterized in that: The power conversion ring (24) is also provided with a spiral power conversion groove (27) on its circumferential inner wall; the outer end of the driven conversion column (14) is also in a hemispherical structure, and the hemispherical portion of the driven conversion column (14) is slidably mounted inside the power conversion groove (27).

8. The water-jacketed steam generator according to claim 7, characterized in that: When the driving motor (2) drives the driving shaft (3) and the driving gear (4) to rotate, the driving gear (4) cooperates with the driven gear ring (25) to drive the power conversion ring (24) and the driving gear ring (26) to rotate.

9. The water-jacketed steam generator according to claim 8, characterized in that: When the active gear ring (26) rotates, the active gear ring (26) will rotate with the ash cleaning member (22) under the action of meshing with the cleaning gear (20); when the ash cleaning member (22) rotates, the inner wall of the ash cleaning member (22) will perform a surrounding friction with the outer wall of the evaporating water pipe (19).

10. The water-jacketed steam generator according to claim 9, characterized in that: When the power conversion ring (24) rotates, the spiral power conversion groove (27) on the power conversion ring (24) cooperates with the driven conversion column (14) to slide outward along the butt-welded pipe (11) with the butt sealing sleeve (13).

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