Boiler ash conveying assembly with high safety
By using a one-way valve and a leak detection mechanism in the boiler ash conveying system, the blockage problem caused by falling particulate matter in the flue gas was solved, thus improving the safety and economy of the equipment.
Patent Information
- Application Number
- CN202420498093.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The soot and particulate matter produced by the boiler after burning fuel oil fall back to the gasification main pipe through the gasification branch pipe, causing blockages, increasing the number of unscheduled shutdowns and costs.
The system employs a check valve and a leak detection mechanism. The check valve prevents particulate matter in the flue gas from falling back, while the leak detection mechanism quickly detects leaks in the gasification tank and promptly closes the isolation valve to prevent blockage.
Reduce gasification branch pipe blockage, decrease non-stop frequency, save costs, and improve equipment operating efficiency.
Smart Images
Figure CN222335402U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler ash conveying in thermal power plants, in particular to a boiler ash conveying component with high safety. Background Art
[0002] Thermal power plants generate electricity by burning fuel oil in boilers, which means that a large amount of fuel oil will be consumed after the boiler is shut down and started once. This is very costly and may lead to external supply restrictions, resulting in immeasurable losses. The boiler will produce a large amount of ash after burning fuel oil. In order to avoid non-stop operation, the ash bin of the boiler ash conveying system is renovated. The original flue gas transportation is through the gasification fan in the gasification component and then transported to the corresponding gasification tank in the ash bin through multiple gasification branches on the gasification mother pipe. In this way, when a leak occurs in a single gasification tank in the ash bin, the ash and particulate matter will enter other gasification tanks in the ash bin through other gasification branches, causing leakage, and will also block the corresponding gasification branch, forcing the entire gasification component to be unable to operate, thereby increasing the number of non-stop operations of the boiler, which will greatly increase costs and affect benefits. Utility Model Content
[0003] In response to the above problems, a boiler ash conveying assembly with high safety is provided. The one-way valve can prevent the particulate matter and flue gas formed by the flue gas from falling back into the gasification air main pipe through the gasification air branch pipe, thereby reducing the impact of blockage on the remaining gasification air branch pipes, thereby saving costs and increasing benefits.
[0004] In order to solve the problems of the prior art, the utility model provides a boiler ash conveying component with high safety, including a gasification air branch pipe for conveying ash, a one-way valve is arranged above the gasification air branch pipe, the one-way valve is connected to the gasification air branch pipe through a first flange component, a leak detection mechanism for observation is arranged above the one-way valve, and the leak detection mechanism is connected to the one-way valve through a second flange component.
[0005] Preferably, the leak detection mechanism comprises a leak detection tube, the leak detection tube is connected to the one-way valve via the second flange assembly, and a visual window is provided on the leak detection tube.
[0006] Preferably, a filter assembly is provided on the leak detection tube, and the filter assembly includes a placement plate and a filter plate; the placement plate is provided on the leak detection tube, and the placement plate can penetrate the leak detection tube; the filter plate is movably provided on the placement plate, and a placement groove for placing the filter plate is provided on the placement plate.
[0007] Preferably, a fixing assembly is provided on the leak detection tube, and the fixing assembly includes an abutment plate and a fixing plate; the abutment plate is provided on the extended end of the placement plate, and the abutment plate can be abutted against the leak detection tube; at least one of the fixing plates is provided on the abutment plate, a bolt is provided on the fixing plate, and the working end of the bolt can penetrate the fixing plate and be threadedly connected to the leak detection tube.
[0008] Preferably, an alarm mechanism is also provided on the leak detection tube, and the alarm mechanism includes a guide tube, a connecting tube and an alarm signal sensor; the guide tube is provided on the leak detection tube; the connecting tube is provided on the side of the guide tube away from the leak detection tube, the connecting tube is connected to the guide tube through a third flange assembly, a rotatable rotating shaft is provided on the connecting tube, and a rotating plate is provided on the rotating shaft; the alarm signal sensor is provided on the connecting tube, and the alarm signal sensor is connected to the rotating shaft.
[0009] Preferably, a visual component is provided on the connecting tube, and the visual component includes a visual meter and a pointer; the visual meter is provided on a side of the connecting tube away from the alarm signal sensor; the pointer is provided on a side of the rotating shaft close to the visual meter.
[0010] Preferably, a limit assembly is provided on the connecting tube, and the limit assembly comprises a limit block, the limit block is provided on a side of the connecting tube close to the visual meter, and the limit block can be arranged in contact with the pointer.
[0011] Preferably, the connecting pipe is further provided with a sound-generating component, the sound-generating component comprises a whistle sound-generating device, and the whistle sound-generating device is arranged below the connecting pipe through a fourth flange component.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The utility model can prevent the particulate matter and smoke formed by the flue gas from falling back into the gasification air main pipe through the gasification air branch pipe through the one-way valve, thereby reducing the impact of blockage on the remaining gasification air branch pipes, thereby saving costs and increasing benefits.
[0014] 2. The utility model can quickly observe the situation on the one-way valve through the leak detection mechanism, and then quickly determine whether the gasification tank in the ash bin is leaking, and further determine whether the isolation valve needs to be closed to prevent the entire device from being affected, thereby further saving costs and further increasing benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1The present invention is a schematic diagram of the overall structure of a boiler ash conveying component with high safety.
[0016] Figure 2 The present invention is a three-dimensional structural diagram of a leak detection mechanism of a boiler ash conveying component with high safety.
[0017] Figure 3 This is a three-dimensional cross-sectional view of the internal structure of the leak detection mechanism of a boiler ash conveying component with high safety. Figure 1 .
[0018] Figure 4 This is a three-dimensional cross-sectional view of the internal structure of the leak detection mechanism of a boiler ash conveying component with high safety. Figure 2 .
[0019] Figure 5 This application Figure 4 A local enlarged schematic diagram of point A in the middle.
[0020] Figure 6 The present invention is a schematic diagram of the three-dimensional structure of a partial leak detection mechanism of a boiler ash conveying component with high safety.
[0021] The numbers in the figure are: 1, gasification fan; 11, gasification air main pipe; 12, electric heating device; 13, isolation valve; 14, ash bin; 2, gasification air branch pipe; 21, first flange assembly; 3, one-way valve; 31, second flange assembly; 4, leak detection mechanism; 41, leak detection pipe; 411, filter assembly; 4111, placement plate; 4112, placement groove; 4113, filter plate; 412, fixing assembly; 4121, abutment plate; 41211, sealing gasket; 4 1212, handle; 4122, fixing plate; 4123, first bolt; 413, visual window; 5, alarm mechanism; 51, guide tube; 52, third flange assembly; 53, connecting tube; 54, rotating shaft; 55, rotating plate; 56, alarm signal sensor; 57, visual assembly; 571, visual meter; 572, pointer; 58, limit assembly; 581, limit block; 59, pronunciation assembly; 591, fourth flange assembly; 592, whistle sounding device. DETAILED DESCRIPTION
[0022] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0023] Reference Figures 1 to 6As shown, a boiler ash conveying component with high safety includes a gasification air branch pipe 2 for conveying ash, a one-way valve 3 is arranged above the gasification air branch pipe 2, and the one-way valve 3 is connected to the gasification air branch pipe 2 through a first flange component 21, and a leak detection mechanism 4 for observation is arranged above the one-way valve 3, and the leak detection mechanism 4 is connected to the one-way valve 3 through a second flange component 31.
[0024] When thermal power generation is carried out through the boiler of a thermal power plant, the boiler will generate flue gas, and the flue gas will be discharged and transported outward by the gasification fan 1. In this way, the flue gas will be transported through the gasification air mother pipe 11, and will first be heated by the electric heating device 12 arranged on the gasification air mother pipe 11. This can prevent the ash from solidifying during the transportation process due to too low temperature. Then the flue gas will continue to be transported by the multiple gasification air branch pipes 2 arranged on the gasification air mother pipe 11, and then the flue gas will pass through the isolation valve 13, the one-way valve 3 and the leakage detection mechanism 4 on the gasification air branch pipe 2 in turn, and will finally be transported to the gasification tank arranged in the ash bin 14. Because the temperature of the ash will become lower after entering the gasification tank of the ash bin 14, part of the flue gas will When particulate matter is formed and the gasification tank in the ash bin 14 leaks, the particulate matter will return to the gasification main pipe 11 through the gasification air branch pipe 2. In this way, the one-way valve 3 can prevent the particulate matter formed by the flue gas and the flue gas from passing through the gasification air branch pipe 2 and falling back into the gasification air main pipe 11, thereby reducing the impact of blockage on the remaining gasification air branch pipes 2, thereby saving costs and increasing benefits. The leak detection mechanism 4 can quickly observe the situation on the one-way valve 3, and then quickly determine whether the gasification tank in the ash bin 14 is leaking, thereby further determining whether it is necessary to close the isolation valve 13, thereby preventing the entire device from being affected, thereby further saving costs and increasing benefits.
[0025] Reference Figure 2 As shown, the leak detection mechanism 4 includes a leak detection tube 41 , and the leak detection tube 41 is connected to the one-way valve 3 through the second flange assembly 31 . A visual window 413 is provided on the leak detection tube 41 .
[0026] The one-way valve 3 is connected to the gasification tank of the ash bin 14 through the leak detection tube 41. When the gasification tank of the ash bin 14 leaks, the flue gas and particulate matter will fall on the one-way valve 3 through the leak detection tube 41. The condition of the one-way valve 3 can be quickly observed through the visual window 413 on the leak detection tube 41, so that it can be quickly determined whether the gasification tank of the ash bin 14 is leaking, and then it can be determined whether the isolation valve 13 needs to be closed, so as to prevent the entire device from being affected, thereby further saving costs.
[0027] Reference Figure 3 As shown, a filter assembly 411 is arranged on the leak detection tube 41, and the filter assembly 411 includes a placement plate 4111 and a filter plate 4113; the placement plate 4111 is arranged on the leak detection tube 41, and the placement plate 4111 can pass through the leak detection tube 41; the filter plate 4113 can be movably arranged on the placement plate 4111, and the placement plate 4111 is provided with a placement groove 4112 for placing the filter plate 4113.
[0028] When the particles fall back to the one-way valve 3, it is very difficult to clean them during maintenance and cleaning, and the particles will also damage the one-way valve 3 when they fall back onto the one-way valve 3. In this way, through the setting of the filter plate 4113, the particles will fall onto the filter plate 4113, thereby effectively protecting the one-way valve 3, and through the extended end of the placement plate 4111, if the placement plate 4111 is removed from the leak detection tube 41, the filter plate 4113 can be quickly removed, so that the filter cannot be cleaned quickly, and the filter plate 4113 will be damaged after long-term use. In this way, the filter plate 4113 is placed in the prevention groove of the placement plate 4111, so that the filter plate 4113 can be quickly replaced, thereby improving practicality.
[0029] Reference Figure 4 As shown, a fixing assembly 412 is provided on the leak detection tube 41, and the fixing assembly 412 includes an abutment plate 4121 and a fixing plate 4122; the abutment plate 4121 is provided on the extended end of the placement plate 4111, and the abutment plate 4121 can be abutted against the leak detection tube 41; at least one of the fixing plates 4122 is provided on the abutment plate 4121, a bolt is provided on the fixing plate 4122, and the working end of the bolt can penetrate the fixing plate 4122 and be threadedly connected with the leak detection tube 41.
[0030] The abutment plate 4121 can be used to make the placement plate 4111 and the leak detection tube 41 tightly abut each other. Since the abutment plate 4121 is provided with a sealing gasket 41211, the sealing performance between the abutment plate 4121 and the leak detection tube 41 will be better. In addition, the abutment plate 4121 is also provided with a handle 41212. In this way, when it is necessary to remove the filter plate 4113, it is only necessary to pull the handle 41212 to drive the placement plate 4111 to move, so that the filter plate 4113 can be quickly removed. After the placement plate 4111 is installed on the leak detection tube 41, the fixing plate 4122 is fixed to the leak detection tube 41 by the bolts, and then the placement plate 4111 is fixed to the leak detection tube 41, so as to prevent smoke from leaking out from the gap between the placement plate 4111 and the leak detection rod, thereby causing an impact on the environment.
[0031] Reference Figure 3 As shown, an alarm mechanism 5 is also provided on the leak detection tube 41, and the alarm mechanism 5 includes a guide tube 51, a connecting tube 53 and an alarm signal sensor 56; the guide tube 51 is provided on the leak detection tube 41; the connecting tube 53 is provided on the side of the guide tube 51 away from the leak detection tube 41, the connecting tube 53 is connected to the guide tube 51 through a third flange assembly 52, a rotatable rotating shaft 54 is provided on the connecting tube 53, and a rotating plate 55 is provided on the rotating shaft 54; the alarm signal sensor 56 is provided on the connecting tube 53, and the alarm signal sensor 56 is connected to the rotating shaft 54.
[0032] When the flue gas flows back to the one-way valve 3, due to the obstruction of the one-way valve 3, the flue gas will move toward the connecting pipe 53 through the guide pipe 51, and the flue gas will impact the rotating plate 55. When the impact force of the flue gas on the rotating plate 55 reaches a certain value, the rotating plate 55 will rotate, thereby driving the rotating shaft 54 to rotate synchronously. In this way, the alarm signal sensor 56 will sense the rotation of the rotating shaft 54, and then determine that the gasification tank of the ash bin 14 is leaking, and the signal will be transmitted to the control unit, thereby quickly reminding the relevant staff that the gasification tank of the ash bin 14 is leaking.
[0033] Reference Figure 5 As shown, a visual component 57 is provided on the connecting tube 53, and the visual component 57 includes a visual meter 571 and a pointer 572; the visual meter 571 is provided on a side of the connecting tube 53 away from the alarm signal sensor 56; the pointer 572 is provided on a side of the rotating shaft 54 close to the visual meter 571.
[0034] When the rotating shaft 54 rotates, it will synchronously drive the pointer 572 to rotate, so that through the cooperation between the pointer 572 and the visual meter 571, it can be determined whether the rotating plate 55 is rotating, so as to further determine whether the gasification tank of the ash bin 14 is leaking, thereby reducing the failure to close the isolation valve 13 in time due to damage to the alarm signal sensor 56, thereby further reducing the impact on the entire equipment, and further saving costs.
[0035] Reference Figure 5 and Figure 6 As shown, a limit assembly 58 is provided on the connecting tube 53 , and the limit assembly 58 includes a limit block 581 . The limit block 581 is provided on a side of the connecting tube 53 close to the visual meter 571 , and the limit block 581 can be arranged in contact with the pointer 572 .
[0036] By setting the limit block 581, the pointer 572 can only rotate at a certain angle, thereby preventing the rotating plate 55 from not resetting when rotating to a vertical state, thereby preventing misjudgment, thereby further improving practicality.
[0037] Reference Figure 4 As shown, the connecting pipe 53 is further provided with a sound producing component 59 , and the sound producing component 59 includes a whistle sound producing device 592 , and the whistle sound producing device 592 is arranged below the connecting pipe 53 through a fourth flange component 591 .
[0038] When the smoke hits the rotating plate 55 and rotates, the smoke will continue to be transported to the side of the whistle sounding device 592 through the connecting pipe 53, and then enter the whistle sounding device 592, so that the whistle sounding device 592 makes a whistle sound, which can further remind relevant personnel that the gasification tank of the ash bin 14 is leaking, thereby further improving practicality, and a smoke treatment device can be set at the outlet end of the whistle sounding device 592, so as to further reduce the impact on the environment.
[0039] The above embodiments only express one or several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the attached claims.
Claims
1. A boiler ash conveying assembly with high safety, comprising a gasification air branch pipe (2) for conveying ash, characterized in that: A one-way valve (3) is arranged above the gasification air branch pipe (2), and the one-way valve (3) is connected to the gasification air branch pipe (2) via a first flange component (21). A leak detection mechanism (4) for observation is arranged above the one-way valve (3), and the leak detection mechanism (4) is connected to the one-way valve (3) via a second flange component (31).
2. A boiler ash conveying assembly with high safety according to claim 1, characterized in that: The leak detection mechanism (4) comprises a leak detection tube (41), the leak detection tube (41) being connected to the one-way valve (3) via the second flange assembly (31), and a visual window (413) being provided on the leak detection tube (41).
3. A boiler ash conveying assembly with high safety according to claim 2, characterized in that: The leak detection tube (41) is provided with a filter assembly (411), and the filter assembly (411) comprises a placement plate (4111) and a filter plate (4113); The placement plate (4111) is arranged on the leak detection tube (41), and the placement plate (4111) can be arranged through the leak detection tube (41); The filter plate (4113) is movably arranged on the placement plate (4111), and the placement plate (4111) is provided with a placement groove (4112) for placing the filter plate (4113).
4. A boiler ash conveying assembly with high safety according to claim 3, characterized in that: A fixing assembly (412) is provided on the leak detection tube (41), and the fixing assembly (412) comprises an abutment plate (4121) and a fixing plate (4122); The abutment plate (4121) is arranged on the extended end of the placement plate (4111), and the abutment plate (4121) can be arranged in abutment with the leak detection tube (41); At least one of the fixing plates (4122) is arranged on the abutting plate (4121), and a bolt is arranged on the fixing plate (4122), and a working end of the bolt can penetrate the fixing plate (4122) and be threadedly connected with the leak detection tube (41).
5. A boiler ash conveying assembly with high safety according to claim 2, characterized in that: The leak detection tube (41) is also provided with an alarm mechanism (5), and the alarm mechanism (5) comprises a guide tube (51), a connecting tube (53) and an alarm signal sensor (56); The guide tube (51) is arranged on the leak detection tube (41); The connecting pipe (53) is arranged on a side of the guide pipe (51) away from the leak detection pipe (41), the connecting pipe (53) is connected to the guide pipe (51) via a third flange assembly (52), a rotatable rotating shaft (54) is arranged on the connecting pipe (53), and a rotating plate (55) is arranged on the rotating shaft (54); The alarm signal sensor (56) is arranged on the connecting pipe (53), and the alarm signal sensor (56) is connected to the rotating shaft (54).
6. A boiler ash conveying assembly with high safety according to claim 5, characterized in that: The connecting pipe (53) is provided with a visual component (57), and the visual component (57) includes a visual meter (571) and a pointer (572); The visual meter (571) is arranged on a side of the connecting pipe (53) away from the alarm signal sensor (56); The pointer (572) is arranged on a side of the rotating shaft (54) close to the visual meter (571).
7. A boiler ash conveying assembly with high safety according to claim 6, characterized in that: A limit assembly (58) is provided on the connecting tube (53), and the limit assembly (58) comprises a limit block (581). The limit block (581) is provided on a side of the connecting tube (53) close to the visual meter (571), and the limit block (581) can be arranged in contact with the pointer (572).
8. The boiler ash conveying assembly with high safety according to claim 5, characterized in that: The connecting pipe (53) is also provided with a sound producing component (59), and the sound producing component (59) comprises a whistle sound producing device (592). The whistle sound producing device (592) is arranged below the connecting pipe (53) through a fourth flange component (591).