Tail flue gas utilization device for waste heat boiler

Abstract

The utility model discloses a tail flue gas utilization device for a waste heat boiler, which relates to the technical field of flue gas utilization equipment and comprises a heat tracing pipeline and a dilution air pipeline, one end of the dilution air pipeline is positioned in the heat tracing pipeline, a collecting tank is arranged outside the heat tracing pipeline and communicated with the heat tracing pipeline, and a collecting shell is arranged inside the collecting tank and communicated with the heat tracing pipeline. The upper end of the collecting shell is connected with the upper side of the inner wall of the collecting tank through a first telescopic spring, a water leakage hole is formed in the bottom end of the collecting shell, a blocking block matched with the water leakage hole in an inserted mode is arranged at the bottom end in the collecting tank, and a plug is arranged at the end, located in the collecting shell, of the blocking block. A driving assembly is arranged outside the collecting tank, one end of the driving assembly is connected with a supporting block, the driving assembly is driven to drive the supporting block to horizontally move in a reciprocating mode in the length direction of the collecting tank, and when distilled water in the collecting tank overflows traditionally, emptying can be conducted in time.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas utilization equipment, in particular to a tail flue gas utilization device for a waste heat boiler. Background Art

[0002] There are many technologies for utilizing the flue gas at the tail end of the waste heat boiler, and the most commonly used one is to utilize the nitrate in the flue gas transported in.

[0003] A Chinese invention patent with publication number CN114653198A discloses a flue gas denitration utilization device for a gas turbine waste heat boiler, which relates to the field of flue gas denitration and includes a heat exchanger, a urea hydrolysis device and a denitration reactor. The air inlet of the heat exchanger is connected to a flue gas inlet pipe, the output port of the heat exchanger is connected to a decompression and temperature reduction flue gas pipe, the other end of the decompression and temperature reduction flue gas pipe is provided with a pneumatic regulating valve, the output end of the pneumatic regulating valve is connected to a dilution air duct, the other end of the dilution air duct is connected to the ammonia input end of the denitration reactor, a heating pipe is fixedly installed on the side of the denitration reactor, the heating pipe is located on the outside of the dilution air duct, and a distilled water collection tank is provided at the bottom of the heating pipe for collecting water cleaned from the surface of the dilution air duct and the heating pipe, but the cleaned water is collected by the distilled water collection tank, the storage capacity of the distilled water collection tank is limited, and it is inconvenient for personnel to empty and clean it in time. When too much water is stored, it is easy to overflow into the heating pipe, affecting the heating transportation work in the dilution air pipe. Utility Model Content

[0004] The utility model aims to provide a tail flue gas utilization device for a waste heat boiler, which can discharge water in a storage tank in time.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a tail flue gas utilization device for a waste heat boiler, comprising a heating pipe and a dilution air pipe at one end thereof, a collecting tank is arranged outside the heating pipe, the collecting tank is connected with the heating pipe, a collecting shell is arranged inside the collecting tank, the upper end of the collecting shell is connected to the upper side of the inner wall of the collecting tank by a telescopic spring, a water leakage hole is opened at the bottom end of the collecting shell, a blocking block which is plugged into the water leakage hole is arranged at the bottom end of the collecting tank, a plug is arranged at one end of the blocking block which is located inside the collecting shell, a support block is slidably arranged on the inner wall of the collecting tank, a pressure sensor is arranged on the support block, a driving component is arranged outside the collecting tank, one end of the driving component is connected to the support block, and the driving component can be driven to drive the support block to move horizontally back and forth along the length direction of the collecting tank.

[0006] Preferably, a through hole is provided on the collection tank for the support block to enter and exit the collection tank, and the driving assembly includes a motor arranged on the outer wall of the collection tank and a rack connected to the support block through a connecting rod, the rack is located outside the collection tank, and a gear meshing with the rack is sleeved on the output shaft of the motor.

[0007] Preferably, a magnetic attraction block 1 is provided at the upper end of the collection shell, and an electromagnetic attraction block 1 magnetically matched with the magnetic attraction block 1 is embedded on the inner wall of the collection tank.

[0008] Preferably, a guide block is fixed to the inner bottom side of the collection tank, and a water pipe communicating with the interior of the collection tank is arranged outside the collection tank below the support block, and the guide block is inclined toward one side of the water pipe.

[0009] Preferably, the pressure sensor is arranged on the support block by sliding along the height direction of the support block through a slider, a telescopic spring 2 is arranged at one end of the slider, the telescopic spring 2 is connected to the bottom side of the inner wall of the support block away from the end of the slider, an electromagnetic suction block 2 is embedded on the inner wall of the support block, and a magnetic suction block 2 is arranged on the side wall of the slider.

[0010] Preferably, a guide groove is provided on the inner wall of the through hole, a top block is provided on the lower side of the sliding block, and one end of the top block passes through the supporting block.

[0011] Preferably, a roller is embedded on the upper side of the support block.

[0012] Preferably, a compression spring is provided on the upper side of the guide block, and the compression spring is connected to the outer wall of the collecting shell at a side away from the guide block.

[0013] The beneficial effects of the utility model are as follows: the utility model arranges a sliding collecting shell inside the collecting tank to collect the distilled water entering the collecting tank, a water leakage hole is arranged at the bottom end of the collecting shell, and a blocking block plugged into the water leakage hole is arranged at the bottom end of the collecting tank, the collecting shell is connected to the upper side of the inner wall of the collecting tank through a telescopic spring, and when the distilled water accumulates in the collecting shell to a certain extent, the telescopic spring is deformed and stretched, thereby changing the height position of the collecting shell in the collecting tank, thereby separating the water leakage hole and the blocking block, leaking water through the water leakage hole and flowing out from the water pipe, avoiding excessive storage in the collecting tank and overflowing into the heating pipe to affect the heating effect in the dilution air pipe. Compared with the prior art, the utility model reduces a certain amount of manual labor for personnel, and does not require personnel to manually drain the collecting tank, and can timely empty the distilled water stored in the collecting tank, making it more convenient and quick to empty the distilled water in the collecting tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure for showing the external part of the collecting tank in one embodiment of the utility model;

[0015] Figure 2 This is a schematic diagram for separately showing the upper structure of the collection tank in one embodiment of the utility model;

[0016] Figure 3 This is a cross-sectional view used to separately display the upper structure of the collection tank in one embodiment of the utility model;

[0017] Figure 4 for Figure 3 A magnified view of part A;

[0018] Figure 5 This is an exploded view for separately showing the upper part of the collecting tank in one embodiment of the utility model;

[0019] Figure 6 for Figure 5 Magnified view of part B.

[0020] Figure numerals: 1. Dilution air duct; 2. Heating duct; 3. Collecting tank; 4. Telescopic spring one; 5. Leakage hole; 6. Block; 7. Plug; 8. Collecting shell; 9. Top block; 10. Support block; 11. Guide groove; 12. Through hole; 13. Water pipe; 14. Magnetic block one; 15. Guide block; 16. Compression spring; 17. Electromagnetic block one; 18. Motor; 19. Gear; 20. Connecting rod; 21. Roller; 22. Telescopic spring two; 23. Magnetic block two; 24. Pressure sensor; 25. Slider; 26. Electromagnetic block two; 27. Rack. DETAILED DESCRIPTION

[0021] The following is only a preferred implementation of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. At the same time, it should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

[0022] It should be noted that, in this article, relational terms such as first and second, such as "connecting board one, connecting board two", etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0023] The directional words mentioned in this embodiment, such as "up, down, left, right", etc., are only used in conjunction with the drawings to enable technicians in this technical field to understand the relationship between various features or parts.

[0024] In this embodiment, unless otherwise clearly specified and limited, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0025] like Figures 1 to 6 As shown, a tail flue gas utilization device for a waste heat boiler comprises a heating pipe 2 and a dilution air pipe 1 with one end located inside the heating pipe 2, a collecting tank 3 is arranged outside the heating pipe 2, the collecting tank 3 is communicated with the inside of the heating pipe 2 through a pipe, and its purpose is to collect the distilled water produced in the heating pipe 2 through the collecting tank 3, a hollow collecting shell 8 is arranged inside the collecting tank 3, and a telescopic spring 4 is vertically fixed to the left and right ends of the upper side of the collecting shell 8, and the upper end of the telescopic spring 4 is fixedly connected to the upper side of the inner wall of the collecting tank 3, and a magnetic attraction block 14 is relatively fixed to the left and right sides of the collecting shell 8, and an electromagnetic attraction block 17 that cooperates with the magnetic attraction block 14 is embedded on the left and right sides of the inner wall of the collecting tank 3, and its purpose is that when the collecting shell 8 moves to a suitable height, the magnetic attraction block 14 and the electromagnetic attraction block 17 are used to collect the distilled water produced in the heating pipe 2. The magnetic attraction of the magnetic block 17 limits the position of the collecting shell 8. A leakage hole 5 is opened on the lower side of the inner wall of the collecting shell 8. A trapezoidal guide block 15 is fixed to the bottom end of the inner wall of the collecting tank 3. The two sets of inclined surfaces of the guide block 15 are respectively located on the left and right sides. A water pipe 13 is respectively arranged on the left and right sides of the lower end of the collecting tank 3. The water pipe 13 is connected to the inside of the collecting tank 3. A blocking block 6 is vertically fixed on the upper side of the guide block 15. The blocking block 6 is arranged in an inverted trapezoidal shape. Its purpose is that when the collecting shell 8 moves downward, the gap between the blocking block 6 and the leakage hole 5 becomes larger, and the leakage amount becomes larger. Its upper end is located inside the collecting shell 8 through the leakage hole 5, and a plug 7 is fixed to its upper end. The length and width of the plug 7 are larger than those of the leakage hole 5, and a sealing ring (not shown in the accompanying drawings) is embedded on the lower side of the plug 7. Its purpose is to play a sealing role.

[0026] A compression spring 16 is vertically fixed on the upper side of the guide block 15, and the upper end of the compression spring 16 is fixedly connected to the lower side of the outer wall of the collecting shell 8. Its purpose is that when the distilled water inside the collecting shell 8 is drained, the compression spring 16 can be restored, generating a vertical upward thrust on the collecting shell 8, allowing the collecting shell 8 to move vertically upward, so that the blocking block 6 can completely block the leakage hole 5.

[0027] Rectangular through holes 12 are relatively opened on the left and right sides of the collecting tank 3, and a rectangular support block 10 is horizontally slidable at the through hole 12. A notch is opened on the upper side of the front end of the support block 10 (not shown in the figure), and a rectangular slider 25 is horizontally placed at the notch. A pressure sensor 24 is fixed to the front end of the upper side of the slider 25. The lower side of the slider 25 is fixedly connected to the inner wall of the notch of the support block 10 through a telescopic spring 22. A magnetic block 2 is fixed on the side wall of the slider 25, and an electromagnetic suction block 26 that cooperates with the magnetic suction block 2 is embedded on the inner wall of the notch. Figure 4 As shown, a guide groove 11 is provided on the lower side of the inner wall of the through hole 12, and the upper side of the guide groove 11 is gradually inclined downward from left to right. A top block 9 is vertically fixed to the lower end of the slider 25, and the lower end of the top block 9 passes through a support block 10. An L-shaped connecting rod 20 is fixed to the left side of the support block 10, and a rack 27 is horizontally fixed to the upper end of the connecting rod 20. A motor 18 is fixed to the outer wall of the collecting tank 3 on one side of the through hole 12, and a gear 19 is fixed to the output shaft sleeve of the motor 18, and the gear 19 is meshed with the rack 27 for transmission.

[0028] A roller 21 is embedded and movable on the upper side of the support block 10 , and its purpose is to reduce the friction between the support block 10 and the bottom side of the outer wall of the collection shell 8 when the support block 10 slides.

[0029] When distilled water is not collected in the collecting shell 8, the telescopic spring 1 4 is in an unstretched and uncompressed initial state, the telescopic spring 2 22 is in a stretched state, the compression spring 16 is in an initial uncompressed state, the electromagnetic suction block 17 is in a de-energized state, the electromagnetic suction block 2 26 is in a powered state, the front end of the support block 10 is located inside the collecting tank 3, and the pressure sensor 24 is located on the lower side of the collecting shell 8, the water leakage hole 5 is blocked by the blocking block 6, and the lower side of the plug 7 is attached to the bottom side of the inner wall of the collecting shell 8.

[0030] When the collecting shell 8 starts to collect distilled water, the pressure sensor 24 starts to be powered on and work, the electromagnetic suction block 26 cooperates with the magnetic suction block 23, and the height of the slider 25 is fixed. When a sufficient weight of distilled water is collected in the collecting shell 8, the pressure sensor 24 controls the motor 18 to be powered through the control system, the electromagnetic suction block 26 loses power, and the telescopic spring 22 starts to reset, pulling the slider 25 downward, so that the pressure sensor 24 is no longer in contact with the outer wall of the collecting shell 8. At the same time, the motor 18 drives the gear 19, the gear 19 drives the rack 27, and the rack 27 pulls the support block 10 to move horizontally away from the collecting shell 8 through the connecting rod 20, and the support block 10 The collecting shell 8 is no longer supported, and the telescopic spring 4 begins to be stretched, and the collecting shell 8 moves downward as a whole, and then the electromagnetic suction block 17 begins to be energized, and magnetically cooperates with the magnetic suction block 14 on the collecting shell 8. When the distilled water inside the collecting shell 8 moves downward through the collecting shell 8, the gap between the water leakage hole 5 and the blocking block 6 flows out, and is guided by the guide block 15 to the water pipe 13 for discharge. When the distilled water in the collecting shell 8 is discharged, the electromagnetic suction block 17 begins to lose power, and the stretched telescopic spring 4 begins to shrink and reset, and the collecting shell 8 is driven upward again, so that the blocking block 6 and the plug 7 re-seal the water leakage hole 5, and the distilled water is collected in the collecting shell 8 again.

[0031] When the support block 10 moves horizontally toward the through hole 12, the top block 9 will contact the upper side of the guide groove 11 and, guided by the guide groove 11, push the slider 25 upward, so that the telescopic spring 22 is stretched again. When the support block 10 stops moving, the electromagnetic suction block 26 is energized again to ensure that when the support block 10 moves toward the collecting shell 8, the pressure sensor 24 can contact the lower side of the outer wall of the collecting shell 8 to detect the pressure. It should be noted that when there is no distilled water in the collecting shell 8, the bottom side of its outer wall is higher than the height position of the pressure sensor 24 in the collecting tank 3. The purpose is to avoid excessive friction between the pressure sensor 24 and the lower side of the collecting shell 8 when the pressure sensor 24 is indirectly driven to the lower side of the collecting shell 8 by the support block 10, thereby damaging the detection probe of the pressure sensor 24.

[0032] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A tail flue gas utilization device for a waste heat boiler, comprising a heat tracing pipe (2) and a dilution air pipe (1) with one end located therein, wherein a collecting tank (3) is arranged outside the heat tracing pipe (2), and the collecting tank (3) is connected to the heat tracing pipe (2). It is characterized in that A collecting shell (8) is provided inside the collecting tank (3), and the upper end of the collecting shell (8) is connected to the upper side of the inner wall of the collecting tank (3) via a telescopic spring (4); The bottom end of the collecting shell (8) is provided with a water leakage hole (5); the bottom end of the interior of the collecting tank (3) is provided with a blocking block (6) plugged into and matched with the water leakage hole (5); one end of the blocking block (6) located inside the collecting shell (8) is provided with a plug (7); A support block (10) is slidably disposed on the inner wall of the collection tank (3), and a pressure sensor (24) is disposed on the support block (10); A driving component is provided outside the collection tank (3), one end of the driving component is connected to the support block (10), and the driving component is driven to drive the support block (10) to move horizontally back and forth along the length direction of the collection tank (3).

2. The tail flue gas utilization device for a waste heat boiler according to claim 1, characterized in that: The collecting tank (3) is provided with a through hole (12) for the supporting block (10) to enter and exit the collecting tank (3); the driving assembly comprises a motor (18) arranged on the outer wall of the collecting tank (3) and a rack (27) connected to the supporting block (10) via a connecting rod (20); the rack (27) is located outside the collecting tank (3); and a gear (19) meshing with the rack (27) is sleeved on the output shaft of the motor (18).

3. The tail flue gas utilization device for a waste heat boiler according to claim 1, characterized in that: The upper end of the collection shell (8) is provided with a magnetic attraction block (14), and the inner wall of the collection tank (3) is embedded with an electromagnetic attraction block (17) that magnetically cooperates with the magnetic attraction block (14).

4. The tail flue gas utilization device for a waste heat boiler according to claim 1, characterized in that: A guide block (15) is fixed to the inner bottom side of the collection tank (3); a water pipe (13) communicating with the interior of the collection tank (3) is arranged outside the collection tank (3) below the support block (10); and the guide block (15) is arranged inclined toward one side of the water pipe (13).

5. The tail flue gas utilization device for a waste heat boiler according to claim 2, characterized in that: The pressure sensor (24) is slidably arranged on the support block (10) along the height direction of the support block (10) through a slider (25); a second telescopic spring (22) is arranged at one end of the slider (25); an end of the second telescopic spring (22) away from the slider (25) is connected to the bottom side of the inner wall of the support block (10); a second electromagnetic suction block (26) is embedded on the inner wall of the support block (10); and a second magnetic suction block (23) is arranged on the side wall of the slider (25).

6. The tail flue gas utilization device for a waste heat boiler according to claim 5, characterized in that: A guide groove (11) is provided on the inner wall of the through hole (12), a top block (9) is provided on the lower side of the sliding block (25), and one end of the top block (9) passes through the supporting block (10).

7. The tail flue gas utilization device for a waste heat boiler according to claim 1, characterized in that: A roller (21) is embedded on the upper side of the support block (10).

8. The tail flue gas utilization device for a waste heat boiler according to claim 4, characterized in that: A compression spring (16) is arranged on the upper side of the guide block (15), and the side of the compression spring (16) away from the guide block (15) is connected to the outer wall of the collection shell (8).

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