Dry quenching secondary dedusting ash bin ash conveying pipeline structure with metering function
By setting up a metering cylinder and a rotary discharge valve in the dry coke quenching secondary dust removal ash bin, using a pneumatic conveying pump and the main controller, the accurate measurement and transportation of coke dust is achieved, and the inability to accurately measure coke dust in the prior art is solved. The problem ensures accurate estimation of the impact on the boiler pipeline and extended service life.
Patent Information
- Application Number
- CN202421003814.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing dry coke quenching secondary dust removal ash silos cannot accurately measure the coke dust displacement, resulting in the inability to accurately estimate the degree of impact on the boiler pipeline.
A ash delivery pipeline structure with metering function was designed. By setting up a metering cylinder and a rotary discharge valve in the secondary dust removal ash bin, the pneumatic conveying pump and the main controller can accurately measure and transport coke dust to ensure coke dust. accurate measurement and delivery.
The accurate recording and measurement of the amount of coke dust in the secondary dust removal ash bin is achieved, ensuring an accurate estimate of the degree of impact on the boiler pipeline, and extending the service life of the boiler pipeline.
Smart Images
Figure CN222205124U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ash conveying pipelines for secondary dust removal ash bins, in particular to an ash conveying pipeline structure for secondary dust removal ash bins for dry coke quenching with a metering function. Background Art
[0002] The main function of CDQ secondary dust removal is to filter the coke dust after passing through the boiler to prevent the coke dust from entering the fan system and affecting the service life of the fan. The coke dust from the secondary dust removal will be temporarily stored in the secondary dust removal ash bin and then transported to the tank through the ash delivery pipeline.
[0003] Since the outer wall of the boiler pipe is washed by coke dust for a long time, it will affect the service life of the boiler pipe, and the degree of wear depends on the content of coke dust. Therefore, the amount of secondary dust removal ash needs to be measured in order to estimate the degree of impact on the boiler pipe.
[0004] However, at present, the coke dust inside the secondary dust removal ash bin is directly transported to the tank body by a pneumatic conveying pump, and the coke dust discharge of the secondary dust removal ash bin cannot be measured, which ultimately makes it impossible to accurately estimate the impact on the boiler pipeline. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a dry coke quenching secondary dust removal ash bin ash delivery pipeline structure with a metering function. The technical solution of the utility model is as follows:
[0006] A dry quenching secondary dust ash bin ash conveying pipeline structure with a metering function comprises a secondary dust ash bin body, a lower ash pipe is fixedly connected to the bottom of the secondary dust ash bin body, the lower end of the lower ash pipe is connected to an upper rotary discharge valve through a bolt flange, the lower side of the upper rotary discharge valve is connected to a metering cylinder through a bolt flange, the lower end of the metering cylinder is connected to a lower rotary discharge valve through a bolt flange, the lower side of the lower rotary discharge valve is connected to a connecting pipe through a bolt flange, the lower end of the connecting pipe is connected to a pneumatic conveying pump through a bolt flange, the lower side of the pneumatic conveying pump is connected to a three-way switching valve through a bolt flange, the other two sides of the three-way switching valve are connected to a feed valve through bolt flanges, the side of the feed valve away from the three-way switching valve is connected to a connecting pipe through a flange, the lower end of the connecting pipe is connected to an adapter through a bolt flange, the lower end of the adapter is connected to a tank body through a bolt flange, and the upper rotary discharge valve, the lower rotary discharge valve, the pneumatic conveying pump, the three-way switching valve and the feed valve are all electrically connected to a main controller.
[0007] Optionally, both side walls of the metering cylinder are provided with mounting grooves, a through groove is formed through one side of the mounting groove close to the inner wall of the metering cylinder, both sides of the interior of the mounting groove are fixedly connected with buckle seats, the interior of the buckle seats is rotatably connected with an axle rod, the inner side of the axle rod is fixedly connected with a rotating seat, the upper end of the rotating seat is fixedly connected with a connecting rod, the connecting rod passes through the interior of the through groove, and the diameter of the through groove is larger than the diameter of the connecting rod, one end of the connecting rod is fixedly connected with a float, one side of the rotating seat is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a contact, the outer wall of the metering cylinder is fixedly connected with a proximity switch via a mounting frame, and the proximity switch is located below the contact.
[0008] Optionally, both sides of the metering cylinder are fixedly connected with mounting seats, one side of the mounting seat is connected with a protective shell by bolts, and the connecting rod, contact and proximity switch are all located inside the protective shell.
[0009] Optionally, the buoy adopts a hollow structure, and the appearance of the buoy is cylindrical in the middle and hemispherical at both ends.
[0010] Optionally, two groups of floats are symmetrically installed on the inner top of the metering cylinder.
[0011] Optionally, the upper end of the interior of the metering cylinder is connected to a dust bin, the inner diameter of the dust bin is smaller than the inner diameter of the metering cylinder, and the buoys are located on both sides of the bottom surface of the dust bin.
[0012] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations.
[0013] By means of the above scheme, the beneficial effects of the utility model are as follows:
[0014] Through the setting of the upper rotary discharge valve, the metering cylinder and the lower rotary discharge valve, the coke dust inside the secondary dust removal ash bin body is first temporarily stored in the metering cylinder before being transported by the pneumatic conveying pump. This design realizes the accurate recording of the amount of coke dust. When the amount of coke dust inside the metering cylinder reaches the full load state, the upper rotary discharge valve is closed. At this time, the conveying channel between the secondary dust removal ash bin body and the metering cylinder is cut off, thereby ensuring the accurate measurement of coke dust. Subsequently, the lower rotary discharge valve is opened, and the coke dust inside the metering cylinder is smoothly transported to the tank body. By counting the number of times the metering cylinder discharges coke dust, the total amount of coke dust can be confirmed, and then the degree of influence of the coke dust content on the boiler pipeline can be estimated.
[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The overall appearance structure diagram of the ash conveying pipeline structure of the secondary dust removal ash bin of the dry coke quenching with metering function provided by the utility model;
[0017] Figure 2 A front view of the ash conveying pipeline structure of the secondary dust removal ash bin of the dry coke quenching with a metering function provided by the utility model;
[0018] Figure 3 This is a schematic diagram of the split structure of the mounting base and the protective shell in the utility model;
[0019] Figure 4 The cross-sectional structure of the metering cylinder in the utility model is shown in FIG. Figure 1 ;
[0020] Figure 5 The cross-sectional structure of the metering cylinder in the utility model is shown in FIG. Figure 2 ;
[0021] Figure 6 It is a schematic structural diagram of the cooperation among the rotating seat, the buoy and the connecting rod in the utility model.
[0022] Numbers in the figure: 1. Secondary dust removal ash bin body; 11. Lower ash pipe; 2. Upper rotary unloading valve; 3. Measuring cylinder; 31. Ash dropping bin; 32. Mounting seat; 321. Protective shell; 33. Mounting groove; 331. Through groove; 332. Buckle seat; 34. Rotating seat; 341. Shaft rod; 342. Connecting rod; 35. Float; 36. Connecting rod; 361. Contact; 37. Proximity switch; 4. Lower rotary unloading valve; 5. Connecting pipe; 6. Pneumatic conveying pump; 7. Three-way switching valve; 8. Feed valve; 9. Connecting pipe; 91. Adapter; 10. Tank body. DETAILED DESCRIPTION
[0023] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0024] See also Figure 1-6As shown, the utility model provides an ash conveying pipeline structure of a secondary dust removal ash bin of dry coke quenching with a metering function, comprising a secondary dust removal ash bin body 1, a lower ash pipe 11 is fixedly connected to the bottom of the secondary dust removal ash bin body 1, the lower end of the lower ash pipe 11 is connected to an upper rotary discharge valve 2 through a bolt flange, a metering cylinder 3 is connected to the lower side of the upper rotary discharge valve 2 through a bolt flange, the lower end of the metering cylinder 3 is connected to a lower rotary discharge valve 4 through a bolt flange, the lower side of the lower rotary discharge valve 4 is connected to a connecting pipe 5 through a bolt flange, and the lower end of the connecting pipe 5 is connected to the lower rotary discharge valve 4 through a bolt flange. A pneumatic conveying pump 6 is connected to the flange, a three-way switching valve 7 is connected to the lower side of the pneumatic conveying pump 6 through a bolt flange, the other two sides of the three-way switching valve 7 are connected to a feed valve 8 through bolt flanges, a side of the feed valve 8 away from the three-way switching valve 7 is connected to a connecting pipe 9 through a flange, a lower end of the connecting pipe 9 is connected to an adapter 91 through a bolt flange, a lower end of the adapter 91 is connected to a tank body 10 through a bolt flange, an upper rotary discharge valve 2, a lower rotary discharge valve 4, a pneumatic conveying pump 6, a three-way switching valve 7 and a feed valve 8 are all electrically connected to a master controller;
[0025] When the coke dust inside the secondary dust removal ash bin body 1 is transported to the tank body 10, the main controller closes the lower rotary discharge valve 4, and the coke dust is trapped and accumulated inside the metering cylinder 3. When the coke dust inside the metering cylinder 3 reaches a certain amount, the main controller controls the upper rotary discharge valve 2 to close, the lower rotary discharge valve 4 to open, and controls the pneumatic conveying pump 6 to transport the coke dust inside the metering cylinder 3 to the inside of the tank body 10. After the coke dust inside the metering cylinder 3 is emptied, the main controller controls the lower rotary discharge valve 4 to close, the upper rotary discharge valve 2 to open, and the coke dust continues to accumulate inside the metering cylinder 3. By counting the number of times the metering cylinder 3 discharges coke dust, the total amount of discharged coke dust can be confirmed, and then the degree of influence of the coke dust content on the boiler pipeline can be estimated. The three-way switching valve 7 is connected to two groups of tank bodies 10. After one group of tank bodies 10 is fully loaded, the three-way switching valve 7 can change the conveying path of the coke dust so that the coke dust is transported to another group of tank bodies 10.
[0026] Furthermore, both side walls of the metering cylinder 3 are provided with mounting grooves 33, and a through groove 331 is penetrated through one side of the mounting groove 33 close to the inner wall of the metering cylinder 3, and buckle seats 332 are fixedly connected to both sides of the interior of the mounting groove 33, and a shaft rod 341 is rotatably connected to the interior of the buckle seat 332, and a rotating seat 34 is fixedly connected to the inner side of the shaft rod 341, and a connecting rod 342 is fixedly connected to the upper end of the rotating seat 34, and the connecting rod 342 penetrates the interior of the through groove 331, and the diameter of the through groove 331 is larger than the diameter of the connecting rod 342, and a buoy 35 is fixedly connected to one end of the connecting rod 342, and a buoy 35 is fixedly connected to one side of the rotating seat 34 A connecting rod 36 is provided, one end of which is fixedly connected to a contact 361. A proximity switch 37 is fixedly connected to the inner part of the mounting seat 32 and the outer wall of the metering cylinder 3 through a mounting frame, and the proximity switch 37 is located below the contact 361. The float 35 and the contact 361 are connected through a connecting rod 342 and a rotating seat 34 and the connecting rod 36. When the coke dust inside the metering cylinder 3 accumulates to a certain height, the float 35 will be lifted up, thereby driving the contact 361 to enter the sensing range of the proximity switch 37. The proximity switch 37 transmits a signal to the main controller, thereby judging that the coke dust in the metering cylinder 3 is in a full state.
[0027] Furthermore, both sides of the metering cylinder 3 are fixedly connected with a mounting base 32, one side of the mounting base 32 is connected with a protective shell 321 by bolts, and the connecting rod 36, the contact 361 and the proximity switch 37 are all located inside the protective shell 321; the protective shell 321 is used to protect the components installed inside the mounting base 32 to ensure that they are not affected by the external environment.
[0028] Furthermore, the float 35 adopts a hollow structure, and the appearance of the float 35 is cylindrical in the middle and hemispherical at both ends; the float 35 adopts a hollow design, which makes the float 35 lighter as a whole, and can change its position accordingly with the accumulation degree of coke dust. Secondly, the hollow structure can provide greater strength and durability, so that the float 35 is not easy to deform or break during long-term use. The structure of the float 35 is cylindrical in the middle and hemispherical at both ends. The overall structure adopts a smooth structure, which is not conducive to the adhesion of coke dust, so that the float 35 can still operate normally after contacting the accumulated coke dust.
[0029] Furthermore, two groups of floats 35 are symmetrically installed at the inner top of the metering cylinder 3; since the degree of coke dust accumulation cannot be determined, when one group of floats 35 is lifted up, the coke dust inside the metering cylinder 3 may not have reached full load. In order to ensure that the metering cylinder 3 is at full load before discharge, only when both groups of floats 35 are lifted up and both groups of contacts 361 enter the sensing range of the proximity switch 37, the main controller controls the metering cylinder 3 to perform coke dust discharge operations to ensure that the metering result is more accurate.
[0030] Furthermore, the upper end of the metering cylinder 3 is connected to an ash bin 31, the inner diameter of which is smaller than that of the metering cylinder 3, and the floats 35 are located on both sides of the bottom of the ash bin 31; the purpose of this design is to prevent the coke dust from contacting the floats 35 when falling, and to protect the floats 35. Only when the coke dust accumulates inside the metering cylinder 3 will it contact the floats 35.
[0031] Working principle: the coke dust inside the secondary dust removal ash bin body 1 will fall into the metering cylinder 3 through the lower ash pipe 11 and the upper rotary discharge valve 2 (the upper rotary discharge valve 2 is in an open state in the initial state), and the fallen coke dust will accumulate inside the metering cylinder 3 (the lower rotary discharge valve 4 is in a closed state in the initial state); when the coke dust accumulates to a certain height, it will contact the lower surface of the float 35. As the coke dust accumulates, the float 35 is lifted up, and the shafts 341 on both sides of the rotating seat 34 are driven to rotate inside the rotating seat 34 through the connecting rod 342, thereby driving the connecting rod 36 and the contact 361 to change the angle. When the contact 361 enters the sensing range of the proximity switch 37, the proximity switch 37 transmits a signal to the main controller, and the main controller controls the upper rotary discharge valve 2 to close; after the upper rotary discharge valve 2 is closed, the lower rotary discharge valve 4 is controlled to open, and the coke dust inside the metering cylinder 3 will fall into the pneumatic conveying pump 6 through the lower rotary discharge valve 4 and the connecting pipe 5, and then through the pneumatic conveying pump 6, the three-way switching valve 7, the feed valve 8, the connecting pipe 9 and the adapter 91, and finally fall into the tank body 10; as the coke dust inside the metering cylinder 3 is discharged, the float 35 will reset, thereby indirectly driving the contact 361 to reset. After the proximity switch 37 senses that the contact 361 has left, after a certain period of time (it is necessary to confirm the single emptying time of the metering cylinder 3 in advance based on the actual space size of the metering cylinder 3, and on this basis, reserve a certain period of time to ensure that the coke dust inside the metering cylinder 3 can be completely emptied), the main controller re-controls the lower rotary discharge valve 4 to close and the upper rotary discharge valve 2 to open; the above operations are continued to cycle; since the amount of coke dust loaded in the metering cylinder 3 at a time is fixed, the total amount of coke dust discharged can be confirmed by counting the number of times the metering cylinder 3 discharges coke dust, and then the degree of influence of the coke dust content on the boiler pipeline is estimated.
[0032] It should be noted that all the electrical devices mentioned above are electrically connected to the main controller, and the main controller can be a conventional device with control functions such as a computer, PLC, etc.
[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.
Claims
1. A dry coke secondary dust removal ash bin ash delivery pipeline structure with metering function, characterized in that: The invention comprises a secondary dust removal ash bin body (1), the bottom of which is fixedly connected to a lower ash pipe (11), the lower end of which is connected to an upper rotary discharge valve (2) via a bolt flange, the lower side of which is connected to a metering cylinder (3) via a bolt flange, the lower end of which is connected to a lower rotary discharge valve (4) via a bolt flange, the lower side of which is connected to a connecting pipe (5) via a bolt flange, the lower end of which is connected to a pneumatic conveying pump (6) via a bolt flange, the pneumatic conveying pump (6) ) is connected to a three-way switching valve (7) at its lower side via a bolt flange, and the other two sides of the three-way switching valve (7) are connected to a feed valve (8) via bolt flanges. The side of the feed valve (8) away from the three-way switching valve (7) is connected to a connecting pipe (9) via a flange, and the lower end of the connecting pipe (9) is connected to an adapter (91) via a bolt flange, and the lower end of the adapter (91) is connected to a tank body (10) via a bolt flange. The upper rotary discharge valve (2), the lower rotary discharge valve (4), the pneumatic conveying pump (6), the three-way switching valve (7) and the feed valve (8) are all electrically connected to a master controller.
2. The ash conveying pipeline structure for secondary dust removal ash bin of dry coke quenching with metering function according to claim 1 is characterized in that: Both side walls of the metering cylinder (3) are provided with mounting grooves (33), a through groove (331) is formed through one side of the mounting groove (33) close to the inner wall of the metering cylinder (3), buckle seats (332) are fixedly connected to both sides of the mounting groove (33), a shaft (341) is rotatably connected to the inside of the buckle seat (332), a rotating seat (34) is fixedly connected to the inner side of the shaft (341), a connecting rod (342) is fixedly connected to the upper end of the rotating seat (34), and the connecting rod (342) is fixedly connected to the upper end of the rotating seat (34). 42) passes through the interior of the through groove (331), and the diameter of the through groove (331) is larger than the diameter of the connecting rod (342), one end of the connecting rod (342) is fixedly connected to a float (35), one side of the rotating seat (34) is fixedly connected to a connecting rod (36), one end of the connecting rod (36) is fixedly connected to a contact (361), and the outer wall of the metering cylinder (3) is fixedly connected to a proximity switch (37) through a mounting frame, and the proximity switch (37) is located below the contact (361).
3. The ash conveying pipeline structure for secondary dust removal ash bin of dry coke quenching with metering function according to claim 2 is characterized in that: Both sides of the metering cylinder (3) are fixedly connected to a mounting seat (32), one side of the mounting seat (32) is connected to a protective shell (321) via bolts, and the connecting rod (36), the contact (361) and the proximity switch (37) are all located inside the protective shell (321).
4. The ash conveying pipeline structure for secondary dust removal ash bin of dry coke quenching with metering function according to claim 2 or 3, characterized in that: The buoy (35) adopts a hollow structure, and the outer shape of the buoy (35) is cylindrical in the middle and hemispherical at both ends.
5. The ash conveying pipeline structure for secondary dust removal ash bin of dry coke quenching with metering function according to claim 2 or 3, characterized in that: The two groups of floats (35) are symmetrically mounted on the inner top of the metering cylinder (3).
6. The ash conveying pipeline structure for secondary dust removal ash bin of dry coke quenching with metering function according to claim 2 or 3, characterized in that: The upper end of the interior of the metering cylinder (3) is connected to an ash bin (31), the inner diameter of the ash bin (31) is smaller than the inner diameter of the metering cylinder (3), and the buoys (35) are located on both sides of the bottom surface of the ash bin (31).