Deep peak regulation device for coal-fired unit

Abstract

The utility model relates to the technical field of thermal power equipment, in particular to a coal-fired unit deep peak shaving device which comprises a unit body, a communicating pipe arranged on the side face of the unit body, a movable plate movably arranged on the side face of a fixed frame, a rotating plate arranged on the outer surface of a connector and movably arranged on the side face of the movable plate, and an arc-shaped groove formed in the side face of the fixed frame. The sliding rod is movably arranged on the side face of the movable plate and movably arranged in the arc-shaped groove, and the linkage assembly is arranged on the side face of the fixed frame and used for driving the movable plate to drive the rotating plate to enable the oval fins to rotate when the movable plate is driven. The connecting head can drive the oval fins arranged on the end face to rotate, the sliding rod can move in the arc-shaped groove when being moved, the rotating ring can rotate on the outer surface of the connecting head, the multiple oval fins can communicate in a U-shaped mode, and heat in water vapor can be better utilized for use.

Description

Technical Field

[0001] The present utility model relates to the technical field of thermal power equipment, and specifically relates to a deep peak shaving device for coal-fired units. Background Technique

[0002] The deep peak shaving device for coal-fired units is a technical solution for load regulation of coal-fired power generation units in the power system. With the development of the power system and the large-scale access of renewable energy, the volatility of the grid load increases, posing higher flexibility requirements for traditional coal-fired power generation units.

[0003] However, in actual use, when the existing deep peak shaving device for coal-fired units is in use, it usually has a steam heat exchanger inside. Its main function is to convert the heat energy of the high-temperature and high-pressure steam generated by the boiler into other forms of energy. Usually, it transfers the heat energy of the steam to water to generate more steam or hot water for power generation or other industrial uses.

[0004] In order to facilitate the use of the steam heat exchanger for deep peak shaving with different load amplitudes of the deep peak shaving device for coal-fired units, it is necessary to adjust the heat exchanger. The existing method is to tilt the heat exchanger to cope with different degrees of deep peak shaving. However, when tilting the fins, a shaft rod is usually used to connect a single fin, so that the fin is tilted at an angle. This single method will cause the tilting angles of each fin to be different. For this reason, we propose a deep peak shaving device for coal-fired units. Summary of the Invention

[0005] One technical problem to be solved by this application is: how to design a deep peak shaving device for coal-fired units that can increase the steam heat exchanger in the coal-fired unit.

[0006] To solve the above technical problem, the embodiment of this application provides a deep peak shaving device for coal-fired units, including a unit body, a connecting pipe arranged on the side of the unit body, a housing arranged on the end face of the connecting pipe, a fixed frame arranged inside the housing, a plurality of elliptical fins arranged inside the fixed frame, and a connecting head arranged on the end face of the elliptical fin. It also includes:

[0007] A moving plate, the moving plate is movably arranged on the side of the fixed frame;

[0008] A rotating plate, the rotating plate is arranged on the outer surface of the connecting head and is movably arranged on the side of the moving plate;

[0009] An arc-shaped groove, the arc-shaped groove is opened on the side of the fixed frame;

[0010] A sliding rod, the sliding rod is movably arranged on the side of the moving plate and is movably arranged inside the arc-shaped groove;

[0011] Linkage component, the linkage component is arranged on the side of the fixed frame and is used to drive the moving plate, and can drive the rotating plate to make the elliptical fins rotate.

[0012] In some embodiments, the linkage component includes a connecting rod arranged on the side of the moving plate. A handle is movably sleeved on the outer surface of the connecting rod. A limiting column is arranged on the side of the moving plate. The inside of the rotating plate is sleeved on the outer surface of the limiting column. A limiting component is arranged on the side of the moving plate to prevent the sliding rod from moving.

[0013] In some embodiments, the limiting component includes a threaded rod threadedly connected to the inside of the moving plate. A handwheel is arranged at the end face of the threaded rod. An extrusion disc is arranged at the end of the threaded rod away from the handwheel. The end face of the extrusion disc away from the threaded rod is closely attached to the side of the fixed frame.

[0014] In some embodiments, the outer surfaces of multiple connection heads are all movably arranged inside the fixed frame. Ring grooves are opened on the outer surfaces of multiple connection heads. Rotating rings are sleeved inside multiple ring grooves. Straight pipes are arranged on the outer surfaces of every two adjacent rotating rings, so that the interiors of multiple elliptical fins are U-shaped connected.

[0015] In some embodiments, multiple connection grooves communicating with the inside of the connection head are opened inside the ring groove. Multiple through grooves are opened on the inner wall of the rotating ring. Multiple through grooves communicate with the corresponding connection grooves.

[0016] In some embodiments, a fixing plate is vertically arranged on the inner wall of the elliptical fin. Multiple circular grooves are opened on the side of the fixing plate.

[0017] In some embodiments, a sliding component is arranged on the outer surface of the sliding rod for the sliding rod to slide inside the arc-shaped groove. A square groove is opened on the outer surface of the sliding rod. The sliding component includes rollers movably arranged inside the square groove. The outer surfaces of the rollers are movably arranged on the inner wall of the arc-shaped groove.

[0018] This utility model at least has the following beneficial effects:

[0019] 1. By setting the linkage component and the rotating plate to drive the connection head to move, the connection head can drive the elliptical fins arranged at the end face to rotate. When moving the sliding rod, it can move inside the arc-shaped groove. Therefore, it can drive the moving plate to move. Thus, the moving plate can drive the linkage component and the rotating plate to move. Therefore, it can drive the connection head and the elliptical fins to be adjusted, and thus can increase the overall synchronism;

[0020] 2. The rotating ring sleeved on the outer surface of the connector can be connected through the through groove and the connecting groove opened. When rotating the elliptical fins, the rotating ring can rotate on the outer surface of the connector, enabling multiple elliptical fins to be connected in a U shape and making better use of the heat in the water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a schematic diagram of the structure of the housing and the fixing frame of the present utility model;

[0023] Figure 3 is a schematic diagram of the structure of the fixing frame, the linkage assembly and the moving plate of the present utility model;

[0024] Figure 4 is a schematic diagram of the structure of the fixing frame of the present utility model;

[0025] Figure 5 is Figure 4 an enlarged schematic diagram at A;

[0026] Figure 6 is a schematic diagram of the structure of the elliptical fins and the linkage assembly of the present utility model;

[0027] Figure 7 is a schematic diagram of the structure of the connector, the rotating ring and the straight pipe of the present utility model;

[0028] Figure 8 is an exploded schematic diagram of the rotating ring and the straight pipe of the present utility model;

[0029] Figure 9 is a sectional schematic diagram of the elliptical fins and the fixing plate of the present utility model;

[0030] Figure 10 is a schematic diagram of the structure of the sliding rod and the sliding assembly of the present utility model.

[0031] In the figure: 1. Unit body; 2. Connecting pipe; 3. Housing; 4. Fixing frame; 5. Moving plate; 6. Elliptical fin; 7. Connector; 8. Rotating plate; 9. Linkage assembly; 91. Handle; 92. Connecting rod; 93. Limit post; 10. Arc groove; 11. Sliding rod; 12. Limit assembly; 121. Handwheel; 122. Threaded rod; 123. Extrusion disc; 13. Ring groove; 14. Connecting groove; 15. Rotating ring; 16. Straight pipe; 17. Through groove; 18. Round groove; 19. Fixing plate; 20. Sliding assembly; 201. Square groove; 202. Roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0033] Embodiment 1

[0034] Please refer to Figures 1-9 , the present utility model provides a technical solution:

[0035] A deep peak shaving device for a coal-fired unit, including a unit body 1, a connecting pipe 2 arranged on the side of the unit body 1, a housing 3 arranged on the end face of the connecting pipe 2, a fixed frame 4 arranged inside the housing 3, a plurality of elliptical fins 6 arranged inside the fixed frame 4, and a connecting head 7 arranged on the end face of the elliptical fin 6. By using the elliptical fin 6, its thickness can be distinguished when rotating, so that heat can be used under deep peak shaving at different loads. It also includes:

[0036] A moving plate 5, the moving plate 5 is movably arranged on the side of the fixed frame 4;

[0037] A rotating plate 8, the rotating plate 8 is arranged on the outer surface of the connecting head 7 and is movably arranged on the side of the moving plate 5;

[0038] An arc-shaped groove 10, the arc-shaped groove 10 is opened on the side of the fixed frame 4, and a sliding rod 11 moves inside the arc-shaped groove 10, which can drive a plurality of elliptical fins 6 to rotate 90 degrees, so that it rotates from the thickest part to the thinnest part, and can adapt to the use of deep peak shaving at different loads;

[0039] A sliding rod 11, the sliding rod 11 is movably arranged on the side of the moving plate 5 and is movably arranged inside the arc-shaped groove 10;

[0040] A linkage assembly 9, the linkage assembly 9 is arranged on the side of the fixed frame 4. When used to drive the moving plate 5, it can drive the rotating plate 8 to make the elliptical fin 6 rotate.

[0041] The linkage assembly 9 includes a connecting rod 92 arranged on the side of the moving plate 5. A handle 91 is movably sleeved on the outer surface of the connecting rod 92. A limiting column 93 is arranged on the side of the moving plate 5. The inside of the rotating plate 8 is sleeved on the outer surface of the limiting column 93. A limiting assembly 12 for preventing the sliding rod 11 from moving is arranged on the side of the moving plate 5. The handle 91 can be used to drive the moving plate 5 to move, and its moving trajectory is the shape of the arc-shaped groove 10.

[0042] The limiting component 12 includes a threaded rod 122 threadedly connected to the inside of the moving plate 5. A handwheel 121 is provided on the end face of the threaded rod 122. An extrusion disc 123 is provided at one end of the threaded rod 122 away from the handwheel 121. The end face of the extrusion disc 123 away from the threaded rod 122 is closely attached to the side face of the fixed frame 4. The setting of the handwheel 121 can facilitate the rotation of the threaded rod 122. At the same time, the provided extrusion disc 123 can be extruded on the side face of the fixed frame 4 to limit the moving plate 5.

[0043] The outer surfaces of multiple connectors 7 are all movably arranged inside the fixed frame 4. Ring grooves 13 are formed on the outer surfaces of the multiple connectors 7. Rotating rings 15 are sleeved inside the multiple ring grooves 13. Straight pipes 16 are arranged on the outer surfaces of every two adjacent rotating rings 15, enabling U-shaped connection inside the multiple elliptical fins 6. The multiple elliptical fins 6 are arranged in a U shape, which can make use of the heat in the water vapor and prevent waste.

[0044] Multiple connecting grooves 14 communicating with the inside of the connector 7 are formed inside the ring groove 13. Multiple through grooves 17 are formed on the inner wall of the rotating ring 15. The multiple through grooves 17 communicate with the corresponding connecting grooves 14. The settings of the multiple connecting grooves 14 and through grooves 17 allow the rotating ring 15 to rotate freely and also communicate with each other, reducing the limitations of use.

[0045] A fixing plate 19 is vertically arranged on the inner wall of the elliptical fin 6. Multiple circular grooves 18 are formed on the side face of the fixing plate 19. When the elliptical fin 6 rotates, the fixing plate 19 will also rotate and gradually become horizontal. The water vapor can heat the water at the bottom of the elliptical fin 6. The circular grooves 18 formed on the side face of the fixing plate 19 can drain the hotter water to the top, and the water with lower temperature will be heated, referring to the phenomenon of water stratification.

[0046] When using this device, first, the main unit 1 of the unit allows water vapor to enter the interior of the housing 3 through the connecting pipe 2, entering from the bottom of the housing 3 to the top, and can pass through multiple elliptical fins 6. The water inside the multiple elliptical fins 6 is heated. When performing deep peak shaving, it is necessary to rotate the contact angle between the elliptical fins 6 and the water vapor. Move the handle 91 to drive the connecting rod 92, and the connecting rod 92 drives the moving plate 5 provided at the end face to move. The moving plate 5 drives the sliding rod 11 provided on the side to move, and the sliding rod 11 drives the arc-shaped groove 10 provided at the end face to slide. Thus, the moving plate 5 can drive the limiting column 93 provided on the side to move, and the limiting column 93 drives the moving plate 5 provided on the outer surface to move. Thus, the moving plate 5 drives the connecting head 7 provided inside to move, and the connecting head 7 drives the elliptical fin 6 provided at the end face to adjust the angle. Then, it is necessary to limit the moving plate 5. Rotate the handwheel 121 to drive the threaded rod 122 to move inside the moving plate 5, and the threaded rod 122 drives the pressing disc 123 provided at the end face to closely fit with the side of the fixed frame 4 to achieve the limiting effect. When it comes to the connecting head 7, water can be U-shaped connected inside the multiple elliptical fins 6, and the water inside the connecting head 7 can enter the through groove 17 through the connecting groove 14, thus reaching inside the rotating ring 15 and entering the straight pipe 16 from inside the rotating ring 15 to complete the process.

[0047] Embodiment 2

[0048] Please refer to Figure 10 , this utility model provides a technical solution:

[0049] Different from Embodiment 1, a sliding assembly 20 is provided on the outer surface of the sliding rod 11 for the sliding rod 11 to slide inside the arc-shaped groove 10. A square groove 201 is formed on the outer surface of the sliding rod 11, and the sliding assembly 20 includes a roller 202 movably arranged inside the square groove 201, and the outer surface of the roller 202 is movably arranged on the inner wall of the arc-shaped groove 10.

[0050] When moving the sliding rod 11 to slide inside the arc-shaped groove 10, it can drive the roller 202 inside the square groove 201 to rotate, making the roller 202 directly contact the inner wall of the arc-shaped groove 10, reducing the contact area, thus reducing the friction force and making its use more relaxed.

[0051] It should be noted that in this text, relational terms such as first and second are only 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. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0052] Although the embodiments of the present utility have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility. The scope of the present utility is defined by the appended claims and their equivalents.

Claims

1. A deep peak shaving device for a coal-fired unit, comprising a unit body (1), a connecting pipe (2) arranged on the side of the unit body (1), a housing (3) arranged on the end face of the connecting pipe (2), a fixed frame (4) arranged inside the housing (3), a plurality of elliptical fins (6) arranged inside the fixed frame (4), and a connector (7) arranged on the end face of the elliptical fin (6), characterized in that: It also includes: A moving plate (5), which is movably arranged on the side of the fixed frame (4); A rotating plate (8), which is arranged on the outer surface of the connecting head (7) and is movably arranged on the side of the moving plate (5); An arc-shaped groove (10), which is opened on the side of the fixed frame (4); A sliding rod (11), which is movably arranged on the side of the moving plate (5) and is movably arranged inside the arc-shaped groove (10); A linkage assembly (9), which is arranged on the side of the fixed frame (4). When driving the moving plate (5), it can drive the rotating plate (8) to rotate the elliptical fins (6).

2. The deep peak shaving device for coal-fired units according to claim 1, wherein: The linkage assembly (9) includes a connecting rod (92) arranged on the side of the moving plate (5). A handle (91) is movably sleeved on the outer surface of the connecting rod (92). A limiting post (93) is arranged on the side of the moving plate (5). The inside of the rotating plate (8) is sleeved on the outer surface of the limiting post (93). A limiting assembly (12) for preventing the sliding rod (11) from moving is arranged on the side of the moving plate (5).

3. The deep peak shaving device for coal-fired units according to claim 2, wherein: The limiting assembly (12) includes a threaded rod (122) threadedly connected to the inside of the moving plate (5). A handwheel (121) is arranged on the end face of the threaded rod (122). An extrusion disc (123) is arranged at the end of the threaded rod (122) far from the handwheel (121). The end face of the extrusion disc (123) far from the threaded rod (122) is closely attached to the side of the fixed frame (4).

4. The deep peak shaving device for coal-fired units according to claim 3, characterized in that: The outer surfaces of multiple connecting heads (7) are all movably arranged inside the fixed frame (4). Ring grooves (13) are opened on the outer surfaces of multiple connecting heads (7). Rotating rings (15) are sleeved inside multiple ring grooves (13). Straight pipes (16) are arranged on the outer surfaces of every two adjacent rotating rings (15), so that the inside of multiple elliptical fins (6) is U-shaped connected.

5. The deep peak shaving device for coal-fired units according to claim 4, characterized in that: Multiple connecting grooves (14) communicating with the inside of the connecting head (7) are opened inside the ring groove (13). Multiple through grooves (17) are opened on the inner wall of the rotating ring (15). Multiple through grooves (17) communicate with the corresponding connecting grooves (14).

6. The deep peak shaving device for coal-fired units according to claim 5, characterized in that: A fixing plate (19) is vertically arranged on the inner wall of the elliptical fin (6). Multiple circular grooves (18) are opened on the side of the fixing plate (19).

7. The deep peak shaving device for coal-fired units according to claim 1, characterized in that: A sliding assembly (20) is arranged on the outer surface of the sliding rod (11) for the sliding rod (11) to slide inside the arc-shaped groove (10). A square groove (201) is opened on the outer surface of the sliding rod (11). The sliding assembly (20) includes a roller (202) movably arranged inside the square groove (201). The outer surface of the roller (202) is movably arranged on the inner wall of the arc-shaped groove (10).

Images