Novel boiler powder conveying system
By introducing a closed-loop drive belt conveyor into the boiler pulverized coal conveying system, the problem of easy wear and leakage in pulverized coal conveying pipelines was solved, enabling continuous conveying without shutdown and improving the practicality and reliability of the system.
Patent Information
- Application Number
- CN202423310235.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing pulverized coal conveying pipelines are prone to wear and corrosion, leading to leaks that require shutdown for inspection and repair, thus affecting the continuous operation of the system.
A novel boiler pulverized coal conveying system is designed, comprising a main pulverized coal conveying pipeline, a valve core, a guide cylinder, and a closed-type transmission belt conveyor. When a pipeline is damaged, the system switches to the closed-type transmission belt conveyor for pulverized coal conveying, achieving continuous conveying without shutdown.
This system enables continuous operation of the coal powder conveying main pipeline without requiring shutdown for inspection and repair, thus improving the system's practicality and reliability.
Smart Images
Figure CN223826270U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulverized coal conveying technology, specifically to a novel boiler pulverized coal conveying system. Background Technology
[0002] In thermal power generation, pulverized coal needs to be transported into the boiler. Currently, pulverized coal is often transported through pipelines, using pressurized nitrogen gas to propel it to the boiler. These pipelines are often located in open areas, and over time, they suffer wear and corrosion. If a pipeline breaks, it cannot continue transporting pulverized coal, requiring a comprehensive inspection of the leak points. Only after the leaks are repaired can the system continue to operate, which presents significant limitations. Therefore, designing a system that can continuously transport pulverized coal is crucial to solving this problem. Summary of the Invention
[0003] To address the aforementioned problems, this invention presents a novel boiler pulverized coal conveying system. This system not only enables pulverized coal conveying through the main pulverized coal conveying pipeline but also allows for pulverized coal conveying via a closed-loop conveyor belt when the main pipeline is damaged. This eliminates the need for system shutdown and waiting for pipeline inspection and repair, thereby enhancing practicality.
[0004] To solve the above-mentioned technical problems, this utility model provides a novel boiler pulverized coal conveying system, characterized by: including a main pulverized coal conveying pipeline, a valve core, a spring, a guide cylinder, and a sealed transmission belt conveyor; the main pulverized coal conveying pipeline has a pulverized coal outlet at one end, which is connected to the boiler pulverized coal inlet; the valve core is matched with the main pulverized coal conveying pipeline, and is piston-type connected inside the main pulverized coal conveying pipeline and connected to it by a spring; the pulverized coal conveyed through the main pulverized coal conveying pipeline to the boiler pulverized coal inlet is sealed by the valve core. A pulverized coal inlet is provided on the main pulverized coal conveying pipeline directly above the pulverized coal outlet. The guide cylinder is located directly above the pulverized coal inlet and is connected to the pulverized coal inlet through a guide pipe. A first valve assembly is installed on the guide pipe. A guide groove is provided on the valve core directly opposite the pulverized coal inlet. The closed-type transmission belt conveyor is inclined, with its upper end extending into the guide cylinder. The pulverized coal conveyed by the closed-type transmission belt conveyor enters the boiler pulverized coal inlet along the guide groove. A pressure detection sensor is installed inside the main pulverized coal conveying pipeline.
[0005] Further: A conductive electric cylinder is installed on the outer wall of one end of the main coal powder conveying pipeline. The output shaft end of the conductive electric cylinder is connected to the transmission rod. The transmission rod passes through the valve core and is connected to the pull plate. The valve core can slide left and right along the transmission rod. The conductive electric cylinder is installed on one end of the main coal powder conveying pipeline connected to the spring. A vertically penetrating guide groove is opened on the valve core on both the front and rear sides of the transmission rod.
[0006] Furthermore, a limiting electric cylinder is also installed on the outer wall of one end of the main coal powder conveying pipeline. The limiting electric cylinder is installed on one end of the main coal powder conveying pipeline on the same side as the conducting electric cylinder. Its output shaft end extends into the main coal powder conveying pipeline and is connected to the limiting plate. The limiting plate is slidably connected to the transmission rod through the guide through hole opened on it.
[0007] Furthermore, a diversion pipeline is also connected to the main coal powder conveying pipeline, and a second valve assembly is installed on the end of the diversion pipeline that is connected to the main coal powder conveying pipeline.
[0008] With the above structure, this utility model can not only transport coal powder through the main coal powder conveying pipeline, but also transport coal powder through a closed transmission belt conveyor when the main coal powder conveying pipeline is damaged. It does not require stopping the machine to wait for pipeline inspection and repair, which increases its practicality. In addition, this design also has the advantages of simple structure, convenient use and high efficiency. Attached Figure Description
[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a top view of the valve core. Detailed Implementation
[0012] like Figure 1 and Figure 2The novel pulverized coal conveying system shown includes a main pulverized coal conveying pipeline 2, a valve core 9, a spring 11, a guide cylinder 4, and a sealed transmission belt conveyor 5. A pulverized coal outlet 2-2 is located at the bottom of one end of the main pulverized coal conveying pipeline. The main pulverized coal conveying pipeline is connected to the boiler pulverized coal inlet 1 through the pulverized coal outlet. The valve core is matched to the main pulverized coal conveying pipeline, and its piston-like connection is located inside the main pulverized coal conveying pipeline and connected to it via a spring. The pulverized coal conveyed through the main pulverized coal conveying pipeline to the boiler pulverized coal inlet is sealed by the valve core. The pulverized coal outlet is directly above... A pulverized coal inlet 2-1 is provided on the main pulverized coal conveying pipeline. The guide cylinder is located directly above the pulverized coal inlet and is connected to the pulverized coal inlet via a guide pipe. A first valve assembly 6 is installed on the guide pipe. A guide groove 9-1 is provided on the valve core directly opposite the pulverized coal inlet. The sealed drive belt conveyor is inclined, with its upper end extending into the guide cylinder. The pulverized coal conveyed by the sealed drive belt conveyor enters the boiler pulverized coal inlet along the guide groove. A pressure detection sensor is installed inside the main pulverized coal conveying pipeline. Under normal conditions, pulverized coal is conveyed through the main pulverized coal conveying pipeline. Pressurized nitrogen can push the valve core to squeeze the spring and open the pulverized coal outlet, conveying pulverized coal to the boiler pulverized coal inlet through the outlet. When the pressure detection sensor detects an abnormal pressure in the main pulverized coal conveying pipeline, the pipeline conveying stops, and the sealed drive belt conveyor opens to use the guide cylinder for conveying. The pulverized coal passes through the guide groove and enters the boiler pulverized coal inlet. This invention not only enables coal powder transportation through the main coal powder conveying pipeline, but also allows coal powder transportation through a closed-loop conveyor belt when the main coal powder conveying pipeline is damaged. This eliminates the need to stop the machine and wait for pipeline inspection and repair, thus increasing its practicality.
[0013] like Figure 1 A pulverized coal conveying main pipeline is shown with a spool cylinder 12 installed on the outer wall of one end. The output shaft of the spool cylinder is connected to a transmission rod, which passes through a valve core and is connected to a pull plate 8. The valve core can slide left and right along the transmission rod. The spool cylinder is installed on one end of the pulverized coal conveying main pipeline connected to a spring. A vertically penetrating guide groove is provided on the valve core on both sides of the transmission rod. When using the pulverized coal conveying main pipeline for conveying, the pulverized coal inlet can be opened not only by pressurizing nitrogen to push the valve core, but also by activating the spool cylinder to pull the valve core with the pull plate.
[0014] like Figure 1The main coal pulverized material conveying pipeline shown is also connected to a diversion conveying pipeline 3. A second valve assembly 7 is installed at the end of the diversion conveying pipeline connected to the main coal pulverized material conveying pipeline. A limit cylinder 13 is also installed on the outer wall of one end of the main coal pulverized material conveying pipeline. The limit cylinder is installed on one end of the main coal pulverized material conveying pipeline on the same side as the conduction cylinder. Its output shaft end extends into the main coal pulverized material conveying pipeline and is connected to the limit plate 10. The limit plate is slidably connected to the transmission rod through a guide hole opened on it. When it is necessary to convey coal pulverized material to other boilers or other mechanisms, the limit cylinder is activated to limit the valve core using the limit plate, and the second valve assembly is opened to convey pulverized coal through the diversion conveying pipeline.
[0015] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.
Claims
1. A novel boiler pulverizing system, characterized in that: The system includes a main coal powder conveying pipeline (2), a valve core (9), a spring (11), a guide cylinder (4), and a sealed transmission belt conveyor (5). A coal powder outlet (2-2) is located at the bottom of one end of the main coal powder conveying pipeline. The main coal powder conveying pipeline is connected to the boiler coal powder inlet (1) through the coal powder outlet. The valve core is matched to the main coal powder conveying pipeline; it is piston-type connected inside the main coal powder conveying pipeline and connected to it through a spring. The coal powder conveyed to the boiler coal powder inlet through the main coal powder conveying pipeline is sealed by the valve core. The coal powder directly above the coal powder outlet... A pulverized coal inlet (2-1) is provided on the main pulverized coal conveying pipeline. The guide cylinder is located directly above the pulverized coal inlet and is connected to the pulverized coal inlet through a guide pipe. A first valve assembly (6) is installed on the guide pipe. A guide groove (9-1) is provided on the valve core facing the pulverized coal inlet. The closed-type transmission belt conveyor is inclined and its upper end extends into the guide cylinder. The pulverized coal conveyed by the closed-type transmission belt conveyor enters the boiler pulverized coal inlet along the guide groove. A pressure detection sensor is installed in the main pulverized coal conveying pipeline.
2. The novel boiler pulverizing system according to claim 1, characterized in that: A conductive electric cylinder (12) is installed on the outer wall of one end of the main coal powder conveying pipeline. The output shaft end of the conductive electric cylinder is connected to the transmission rod. The transmission rod passes through the valve core and is connected to the pull plate (8). The valve core can slide left and right along the transmission rod. The conductive electric cylinder is installed on one end of the main coal powder conveying pipeline connected to the spring. A guide groove that runs vertically through the valve core is opened on both the front and rear sides of the transmission rod.
3. A novel boiler pulverizing system according to claim 2, characterized in that: A limiting electric cylinder (13) is also installed on the outer wall of one end of the main coal powder conveying pipeline. The limiting electric cylinder is installed on one end of the main coal powder conveying pipeline on the same side as the conducting electric cylinder. Its output shaft end extends into the main coal powder conveying pipeline and is connected to the limiting plate (10). The limiting plate is slidably connected to the transmission rod through the guide through hole opened on it.
4. A novel boiler pulverizing system according to claim 3, characterized in that: The main coal powder conveying pipeline is also connected to a diversion conveying pipeline (3), and a second valve assembly (7) is installed on one end of the diversion conveying pipeline connected to the main coal powder conveying pipeline.