Deep peak regulation device for thermal power coal-fired unit
By designing a connecting system for high-quality coal bunkers and low-quality coal bunkers in thermal power coal-fired units and a power source to drive the rotation of the auger, the problem of irrational utilization of high-quality coal bunkers and low-quality coal bunkers was solved, and flexible adjustment of the proportion of coal types and improvement of equipment efficiency were achieved.
Patent Information
- Application Number
- CN202422779611.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-14
AI Technical Summary
In the existing technology, the allocation of high-quality coal bunkers and low-quality coal bunkers cannot be reasonably utilized, resulting in the device failing to effectively utilize low-quality coal during peak power consumption, affecting equipment efficiency.
High-quality coal and low-quality coal bins are designed inside the coal storage bin, and the high-quality coal and low-quality coal bins are connected through a baffle and traction rope system. The power source drives the rotating shaft to drive the auger to rotate, and the coal discharge speed is adjusted to adapt to the peak and valley changes in electricity consumption.
It has achieved the goal of adjusting the proportion of coal types according to electricity demand, optimizing combustion effects, improving equipment utilization efficiency and coal transportation efficiency, and rationally utilizing high-quality and low-quality coal resources.
Smart Images
Figure CN223399799U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal power peak regulation, in particular to a deep peak regulation device for a thermal power coal-fired unit. Background Art
[0002] Deep peak-shaving technology combines a large number of energy storage devices with power generation systems to adjust the balance between energy generation and power supply according to changes in the power system. This technology helps optimize the operation of coal-fired power plants, solve the problem of energy conservation and emission reduction, improve the safe operation of the power grid, achieve market-oriented economic benefits, promote efficient use of resources, and realize green development.
[0003] The coal unit deep peak regulation device disclosed in the Chinese invention patent application publication specification CN118499092A includes a conveying chamber, a rotating shaft is rotatably provided on one side of the conveying chamber, a spiral blade is set and fixedly connected to the rotating shaft, a storage bucket is provided on one side of the upper end of the conveying chamber, a discharge port is provided on one side of the lower end of the conveying chamber, a weighing plate is fixedly connected to the inner wall of the conveying chamber, a push plate is slidably connected to the upper end of the weighing plate, and a gravity potential energy driven anti-blocking mechanism is provided inside the storage bucket to prevent the storage bucket from being blocked.
[0004] This technical solution can avoid the accumulation or blockage of coal in the storage barrel when feeding the coal, thereby improving the feeding efficiency of the coal; the discharge height and angle of the coal can be adjusted to adapt to different usage requirements. In actual use, high-quality coal with high combustion calorific value and low-quality coal with low combustion calorific value are usually mixed and used to adapt to the peak and valley of electricity consumption through reasonable matching. However, during the peak electricity consumption, when only high-quality coal is used instead of inferior coal, the device for supplying inferior coal suspends work, resulting in the device not being effectively utilized. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the utility model provides a deep peak-shaving device for a thermal power coal-fired unit, which solves the problem in the background technology that the allocation of high-quality coal bunkers and low-quality coal bunkers cannot be reasonably utilized.
[0006] Technical Solution
[0007] To achieve the above purpose, the present invention is implemented through the following technical solutions: a deep peak-shaving device for a thermal power coal-fired unit, including a coal storage bin, the interior of the coal storage bin is divided into a high-quality coal bin and an inferior coal bin by a partition, the bottom end of the partition is provided with a protrusion biased toward the inferior coal bin, the bottom end of the coal storage bin is provided with a chute, a partition block is fixedly installed in the middle of the chute, and the partition block protrudes toward the side of the high-quality coal bin, a sleeve is fixedly installed in the middle of the coal storage bin and the chute, a discharge port is provided on the sleeve on one side of the inferior coal bin, a conversion port and a discharge port are provided on the side of the high-quality coal bin, the conversion port is connected to the high-quality coal bin side of the coal storage bin and the low-quality coal bin side of the chute, the interior of the sleeve is slidably connected with a baffle, and a notch aligned with the discharge port and the discharge port is provided in the middle of the baffle.
[0008] Furthermore, one side of the baffle and the sleeve are fixedly installed with magnetic plates that attract each other, and a traction rope is fixedly installed on the side of the baffle away from the magnetic plate. The traction rope passes through the sleeve and extends to the outside of the sleeve. A reset spring is provided between the baffle and the sleeve on the side away from the magnetic plate. A clamping rod is fixedly installed on one end of the traction rope located on the outside of the sleeve, and a protruding clamping slot for placing the clamping rod is fixedly installed on the outside of the coal storage bin, and the protruding clamping slot is located above the clamping rod.
[0009] Furthermore, a reversing arc plate is fixedly installed above the sleeve, and the reversing arc plate is located on one side of the clamping rod.
[0010] Furthermore, the bottom end of the material chute is located on both sides of the spacer and is connected to and penetrated by a bearing sleeve. The bottom end of the bearing sleeve is fixedly installed with a power source that can adjust the rotation speed. The output end of the power source is fixedly installed with a rotating shaft. The rotating shaft passes through the bearing sleeve and is rotatably connected to the bearing sleeve. The outer surface of the rotating shaft is located inside the bearing sleeve and is fixedly installed with an auger piece. A discharge pipe is connected and penetrated below the side wall of the bearing sleeve.
[0011] Furthermore, there are two traction ropes, which are symmetrically arranged.
[0012] Furthermore, the return spring is sleeved on the outer surface of the traction rope.
[0013] The beneficial effects of the present invention are:
[0014] 1. This deep peak-shaving device for a thermal power coal-fired unit uses high-quality and low-quality coal silos to adjust the coal blending ratio according to peak and valley power consumption, thereby optimizing combustion. During peak power consumption, a baffle can be pulled to connect the high-quality coal silo with the chute for conveying low-quality coal through a switch port. Closing the connection between the low-quality coal storage silo and the chute allows for faster delivery of high-quality coal through the conveyor, thereby improving equipment efficiency.
[0015] 2. The deep peak-shaving device of the thermal power coal-fired unit drives the rotating shaft to rotate the auger through the provided power source, so as to transfer the coal in the silo. By adjusting the rotation speed of the power source, the discharge speed of high-quality coal and low-quality coal can be adjusted respectively, and then the coal consumption ratio can be reasonably adjusted according to the peak and valley of electricity consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the connection of the coal storage bin of the utility model;
[0018] Figure 3 This is a schematic diagram of the sleeve connection of the utility model;
[0019] Figure 4 This is a schematic diagram of the connection of the bearing sleeve of the utility model;
[0020] Figure 5 This is a half-section schematic diagram of the coal storage bin of the present utility model.
[0021] Among them, 1. Coal storage bin; 2. Chute bin; 3. Spacer; 4. Sleeve; 5. Discharge port; 6. Conversion port; 7. Discharge port; 8. Baffle; 9. Notch; 10. Magnetic plate; 11. Traction rope; 12. Reset spring; 13. Connecting rod; 14. Protruding slot; 15. Reversing arc plate; 16. Bearing sleeve; 17. Power source; 18. Rotating shaft; 19. Auger piece; 20. Discharge pipe; 21. Partition. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0023] See Figure 1-Figure 5A deep peak-shaving device for a thermal power coal-fired unit includes a coal storage bin 1. The interior of the coal storage bin 1 is divided into a high-quality coal bin and an inferior coal bin by a partition 21. The bottom end of the partition 21 is provided with a protrusion biased toward the inferior coal bin. A chute 2 is provided at the bottom end of the coal storage bin 1. A partition block 3 is fixedly installed in the middle of the chute 2. The partition block 3 protrudes toward the side of the high-quality coal bin. A sleeve 4 is fixedly installed in the middle of the coal storage bin 1 and the chute 2. A discharge port 5 is provided on the side of the inferior coal bin of the sleeve 4, and a conversion port 6 and a discharge port 7 are provided on the side of the high-quality coal bin. The conversion port 6 is connected to the high-quality coal bin side of the coal storage bin 1 and the low-quality coal bin side of the chute 2. A baffle 8 is slidably connected to the inside of the sleeve 4. A notch 9 aligned with the discharge port 5 and the discharge port 7 is provided in the middle of the baffle 8.
[0024] One side of the baffle 8 and the sleeve 4 are fixedly installed with mutually attractive magnetic plates 10, and a traction rope 11 is fixedly installed on the side of the baffle 8 away from the magnetic plate 10. The traction rope 11 passes through the sleeve 4 and extends to the outside of the sleeve 4. A reset spring 12 is provided on the side between the baffle 8 and the sleeve 4 away from the magnetic plate 10. Through such an arrangement, the baffle 8 can be reset in time. A clamping rod 13 is fixedly installed at one end of the traction rope 11 located on the outside of the sleeve 4, and a protruding card slot 14 for placing the clamping rod 13 is fixedly installed on the outside of the coal storage bin 1. The protruding card slot 14 is located above the clamping rod 13. By setting the traction rope 11, the baffle 8 can be pulled to move, and the working state of the baffle 8 can be maintained by the clamping rod 13 and the protruding card slot 14.
[0025] A reversing arc plate 15 is fixedly installed above the sleeve 4. The reversing arc plate 15 is located on one side of the clamping rod 13. This arrangement can reduce the wear of the traction rope 11 during the movement.
[0026] The bottom end of the chute 2 is located on both sides of the partition block 3 and is connected to and penetrated by a bearing sleeve 16. The bottom end of the bearing sleeve 16 is fixedly installed with a power source 17 that can adjust the rotation speed. The power source 17 is composed of a motor and a gearbox. The motor can be speed-regulated, or a gearbox can be set to adjust the speed to achieve the speed regulation effect. The output end of the power source 17 is fixedly installed with a rotating shaft 18. The rotating shaft 18 passes through the bearing sleeve 16 and is rotatably connected to the bearing sleeve 16. The outer surface of the rotating shaft 18 is located inside the bearing sleeve 16 and is fixedly installed with a dragon piece 19. A discharge pipe 20 is connected and penetrated at the bottom of the side wall of the bearing sleeve 16. Such an arrangement can be used to transport coal powder out of the silo.
[0027] There are two traction ropes 11 , and the two traction ropes 11 are symmetrically arranged. This arrangement ensures that the two traction ropes 11 can be stressed at the same time, thereby ensuring that the baffle 8 is evenly stressed.
[0028] The return spring 12 is sleeved on the outer surface of the traction rope 11 , and this arrangement can optimize the space inside the sleeve 4 .
[0029] When in use, the deep peak-shaving device of the thermal power coal-fired unit drives the rotating shaft 18 to rotate the auger piece 19 through the power source 17, so that the coal in the silo can be transferred. By adjusting the rotation speed of the power source 17, the discharge speed of the high-quality coal and the low-quality coal can be adjusted respectively, and then the coal ratio can be reasonably adjusted according to the peak and valley of electricity consumption, so as to optimize the combustion effect. When the electricity consumption is at a peak, the baffle 8 can be pulled through the conversion port 6 to connect the high-quality coal silo and the chute silo 2 for conveying low-quality coal. By closing the connection between the coal storage silo 1 for low-quality coal and the chute silo 2, the conveying device can speed up the conveying of high-quality coal, thereby improving the use efficiency of the equipment.
[0030] It should be noted that, in this document, relational terms such as first and second, 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.
[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A deep peak-shaving device for a coal-fired power plant, comprising a coal storage bin (1), characterized in that: The interior of the coal storage bin (1) is divided into a high-quality coal bin and a low-quality coal bin by a partition (21), the bottom end of the partition (21) is provided with a protrusion biased toward the low-quality coal bin, the bottom end of the coal storage bin (1) is provided with a chute (2), a partition block (3) is fixedly installed in the middle of the chute (2), and the partition block (3) protrudes toward the high-quality coal bin; A sleeve (4) is fixedly installed in the middle of the coal storage bin (1) and the chute bin (2); a discharge port (5) is provided on the side of the sleeve (4) located at the inferior coal bin, and a conversion port (6) and a discharge port (7) are provided on the side of the superior coal bin; the conversion port (6) is connected to the superior coal bin side of the coal storage bin (1) and the inferior coal bin side of the chute bin (2); a baffle (8) is slidably connected inside the sleeve (4); a notch (9) is provided in the middle of the baffle (8) and is aligned with the discharge port (5) and the discharge port (7).
2. A deep peak-shaving device for a thermal power coal-fired unit according to claim 1, characterized in that: A magnetic plate (10) that attracts each other is fixedly mounted on one side of the baffle (8) and the sleeve (4); a traction rope (11) is fixedly mounted on the side of the baffle (8) away from the magnetic plate (10); the traction rope (11) passes through the sleeve (4) and extends to the outside of the sleeve (4); a reset spring (12) is provided between the baffle (8) and the sleeve (4) on the side away from the magnetic plate (10); a clamping rod (13) is fixedly mounted on one end of the traction rope (11) located outside the sleeve (4); a protruding clamping groove (14) for placing the clamping rod (13) is fixedly mounted on the outside of the coal storage bin (1); the protruding clamping groove (14) is located above the clamping rod (13).
3. A deep peak-shaving device for a thermal power coal-fired unit according to claim 2, characterized in that: A reversing arc plate (15) is fixedly installed above the sleeve (4), and the reversing arc plate (15) is located on one side of the clamping rod (13).
4. A deep peak-shaving device for a thermal power coal-fired unit according to claim 3, characterized in that: The bottom end of the material chute (2) is located on both sides of the spacer (3) and is connected to and penetrated by a bearing sleeve (16); the bottom end of the bearing sleeve (16) is fixedly installed with a power source (17) that can adjust the rotation speed; the output end of the power source (17) is fixedly installed with a rotating shaft (18); the rotating shaft (18) penetrates the bearing sleeve (16) and is rotatably connected to the bearing sleeve (16); the outer surface of the rotating shaft (18) is located inside the bearing sleeve (16) and is fixedly installed with a auger piece (19); and a discharge pipe (20) is connected to and penetrated below the side wall of the bearing sleeve (16).
5. A deep peak-shaving device for a thermal power coal-fired unit according to claim 4, characterized in that: There are two traction ropes (11), and the two traction ropes (11) are symmetrically arranged.
6. A deep peak-shaving device for a thermal power coal-fired unit according to claim 5, characterized in that: The return spring (12) is sleeved on the outer surface of the traction rope (11).