A sensible heat energy storage power generation turbine

Abstract

This utility model provides a turbine for sensible heat energy storage and power generation, relating to the field of turbine technology. The utility model includes a housing with a feed pipe at its top. A first shaft and a second shaft are rotatably connected inside the housing, connected by a buffer device. The buffer device includes a grooved plate and a disc. One side of the grooved plate is fixedly connected to one end of the first shaft, and one side of the disc is fixedly connected to one end of the second shaft. By using the buffer device and connecting the first and second shafts with the grooved plate and disc, this utility model allows for small displacement deviations between the grooved plate and disc during turbine operation. This buffers the uneven rotational speeds of the first and second shafts caused by the speed difference. A pressure sensor detects the deviation and promptly sends a signal to the control center to alert maintenance personnel, facilitating timely shutdown and maintenance, and improving the stability and service life of the turbine.

Description

Technical Field

[0001] This utility model relates to the field of turbine technology, and in particular to a turbine for sensible heat energy storage and power generation. Background Technology

[0002] Sensible thermal energy storage power generation technology is a system that stores / releases thermal energy through temperature changes in a thermal storage medium (such as molten salt, water, rock, etc.) and converts the thermal energy into electrical energy. Among them, the turbine is the core equipment to realize the conversion of "thermal energy → mechanical energy → electrical energy".

[0003] During operation, the heat storage medium is heated by heat sources such as solar collectors and industrial waste heat, storing energy in the form of "sensible heat." The high-temperature heat storage medium transfers heat to the working fluid, such as water or air, through a heat exchanger, causing the working fluid to heat up and pressurize. The high-pressure working fluid enters the turbine, driving the turbine blades to rotate and converting thermal energy into mechanical energy. This mechanical energy is then used to drive a generator to generate electricity through a coupling, ultimately completing the energy conversion. When the working fluid enters the turbine through the top of the turbine and drives the turbine blades on both sides of the turbine to control the rotation of the shaft connected to the turbine blades, the actual rotation speed of the turbine blades on both sides of the turbine may be different due to the influence of the medium. When the speed deviation on both sides is large, it will generate a torsional force on the shaft at the connection between the turbine blades on both sides, resulting in increased working intensity, decreased stability, and reduced service life of the shaft. Utility Model Content

[0004] The purpose of this invention is to solve the problem that when the working medium enters the turbine through the top of the turbine and drives the turbine blades on both sides of the turbine to rotate, the actual rotation speed of the turbine blades on both sides of the turbine may be different due to the influence of the medium. When the rotation speed difference between the two sides is large, it will generate a torsional force on the connection between the turbine blades on both sides of the shaft, which will increase the working intensity of the shaft during rotation, reduce stability, and reduce the service life of the shaft. Therefore, a turbine for sensible heat energy storage power generation is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a turbine for sensible heat storage power generation, comprising a housing, a feed pipe at the top of the housing, two discharge pipes fixedly connected to one side of the housing, a first shaft and a second shaft rotatably connected inside the housing, a plurality of turbine blades fixedly connected to the outer surfaces of the first shaft and the second shaft, a plurality of stators fixedly connected to both sides of the inner wall of the housing, the first shaft and the second shaft rotating on the inner walls of the plurality of stators, and the first shaft and the second shaft being connected by a buffer device.

[0006] Furthermore, the buffer device includes a grooved plate and a disc. One side of the grooved plate is fixedly connected to one end of a first shaft, and one side of the disc is fixedly connected to one end of a second shaft. The outer surface of the disc has several through holes, and bolts are slidably inserted into the inner walls of the through holes. One side of the grooved plate has a groove, and several stops are fixedly connected to the inner wall of the groove on one side of the groove. Several sector blocks are slidably connected to the inner wall of the groove on one side of the groove. A high-strength spring is provided on one side of each sector block, and the two ends of the spring are fixedly connected to one side of each sector block and one side of each stop, respectively. The stops and sector blocks are circumferentially distributed inside the groove on one side of the groove of the grooved plate. Two threaded holes are opened on the outer surface of each sector block, and the outer surface of the bolt is threadedly connected to the inner wall of the threaded hole.

[0007] Furthermore, a protective shell is fixedly connected to the inner wall of the groove on one side of the tray, and a pressure sensor is installed inside the protective shell. Two airbag blocks are fixedly connected to the inner wall of the groove on one side of the tray. The airbag blocks are filled with air, and one side of the airbag blocks is connected to the interior of the protective shell through a connecting pipe. Two pressure blocks are fixedly connected to one side of the disc.

[0008] Furthermore, a buffer groove is provided on one side of the sector block, and several rubber buffer rods are fixedly connected to the inner wall of the groove on one side of the groove, with the outer surface of the buffer rods located inside the buffer groove.

[0009] Furthermore, two reinforcing frames are fixedly connected to the inner wall of the groove on one side of the tray, and the two reinforcing frames are respectively fixed above the two airbag blocks on one side of the tray.

[0010] Furthermore, two L-shaped pieces are fixedly connected to one side of the disk, and the end of the L-shaped piece away from the disk is arc-shaped.

[0011] Furthermore, a circular positioning rod is fixedly connected to one end of the L-shaped piece, and one side of the positioning rod is attached to the outer surface of the slot.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] In this invention, a buffer device is set up, and the first shaft and the second shaft are connected by a grooved plate and a disc. During the operation of the turbine, a small displacement deviation can occur between the grooved plate and the disc to buffer the uneven speed of the first shaft and the second shaft caused by the speed difference. The deviation is detected by a pressure sensor and a signal is sent to the control center in a timely manner to remind maintenance personnel, so as to facilitate timely shutdown and maintenance, thereby improving the stability and service life of the turbine during operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the housing of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the first shaft of this utility model;

[0017] Figure 4 This utility model Figure 3 A magnified three-dimensional structural diagram of part A;

[0018] Figure 5 This is an exploded three-dimensional structural diagram of the buffer device of this utility model;

[0019] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the protective shell of this utility model;

[0020] Figure 7 This is a three-dimensional structural diagram of the disc portion of this utility model;

[0021] Figure 8 This is a flowchart illustrating the working process of the pressure sensor in this utility model.

[0022] Legend: 1. Housing; 2. Buffer device; 21. Groove; 22. Disc; 23. Through hole; 24. Bolt; 25. Stop block; 26. Spring; 27. Sector block; 28. Threaded hole; 29. ​​Buffer groove; 210. Buffer rod; 211. Airbag block; 212. Pressure sensor; 213. Pressure block; 214. Protective shell; 215. L-shaped piece; 216. Positioning rod; 217. Reinforcing frame; 3. Feed pipe; 4. Discharge pipe; 5. First shaft; 6. Second shaft; 7. Turbine blade; 8. Stator. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Example 1, such as Figure 1-3 As shown, a sensible heat storage power generation turbine includes a housing 1, a feed pipe 3 at the top of the housing 1, two discharge pipes 4 fixedly connected to one side of the housing 1, a first shaft 5 and a second shaft 6 rotatably connected inside the housing 1, a plurality of turbine blades 7 fixedly connected to the outer surfaces of the first shaft 5 and the second shaft 6, and a plurality of stators 8 fixedly connected to both sides of the inner wall of the housing 1, the first shaft 5 and the second shaft 6 rotating on the inner walls of the plurality of stators 8, and the first shaft 5 and the second shaft 6 being connected by a buffer device 2.

[0027] Reference Figure 1-6As shown, in this embodiment: the buffer device 2 includes a grooved plate 21 and a disc 22. One side of the grooved plate 21 is fixedly connected to one end of the first shaft 5, and one side of the disc 22 is fixedly connected to one end of the second shaft 6. The outer surface of the disc 22 has several through holes 23, and bolts 24 are slidably inserted into the inner walls of the through holes 23. One side of the grooved plate 21 has a groove, and several blocks 25 are fixedly connected to the inner wall of the groove on one side of the groove. Several sector-shaped blocks 27 are slidably connected to the inner wall of the groove on one side of the groove. A high-strength spring 26 is provided on one side of each sector-shaped block 27, and both ends of the spring 26 are fixedly connected to one side of each sector-shaped block 27 and one side of each block 25, respectively. The blocks 25 and sector-shaped blocks 27 are circumferentially distributed inside the groove on one side of the grooved plate 21. Two threaded holes 28 are formed on the outer surface of the sector block 27. The outer surface of the bolt 24 is threaded to the inner wall of the threaded hole 28. By setting the sector block 27, when installing the turbine, the grooved plate 21 at one end of the first shaft 5 is aligned with the disc 22 at one end of the second shaft 6. Then, the second shaft 6 is moved so that one side of the disc 22 fits against the outer surface of the grooved plate 21, so that the through hole 23 on the outer surface of the disc 22 is aligned with the threaded hole 28 on the outer surface of each sector block 27 on one side of the grooved plate 21. Then, several bolts 24 are inserted through the through hole 23 on the outer surface of the disc 22 into the threaded hole 28 on the outer surface of the sector block 27. The bolts 24 are rotated so that they enter the threaded hole 28 on the outer surface of the sector block 27 and are threaded to the inner wall of the threaded hole 28. The disc 22 is fixed to each of the sector blocks 27 on one side of the grooved disc 21, so that the disc 22 fits against one side of the grooved disc 21. The first shaft 5 and the second shaft 6 are connected through the grooved disc 21 and the disc 22. When the turbine is working, the high-pressure working fluid enters the interior of the housing 1 through the feed pipe 3 and moves to both ends of the housing 1. The working fluid enters the outer surface of the first shaft 5 and the second shaft 6, passes between the turbine blades 7 and the stator 8, and pushes the turbine blades 7 to rotate, converting heat energy into mechanical energy. Then, through the engine shaft connected by the first shaft 5 or the second shaft 6 via the coupling, it drives the generator to generate electricity. The working fluid will be output through the discharge pipes 4 at both ends of the housing 1. If there is a speed difference during the rotation of the first shaft 5 and the second shaft 6, the disc 22 will drive the sector blocks 27. The disc 22 slides and compresses the spring 26 inside the groove on one side of the slot 21, allowing the disc 22 to rotate slightly relative to the slot 21. The spring 26's thrust restricts and buffers the position of the sector block 27 inside the slot 21. A protective shell 214 is fixedly connected to the inner wall of the groove on one side of the slot 21. A pressure sensor 212 (which can be a Honeywell HSC series pressure sensor) is installed inside the protective shell 214. Two airbag blocks 211 are fixedly connected to the inner wall of the groove on one side of the slot 21. The airbag blocks 211 are filled with air, and one side of each airbag block 211 communicates with the interior of the protective shell 214 via a connecting pipe. Two pressure blocks 213 are fixedly connected to one side of the disc 22. When connecting the slot 21 and the disc 22...When one side of the disc 22 is attached to the outer surface of the grooved disc 21, the two pressure blocks 213 at one end of the disc 22 are respectively attached to the sides of the two airbag blocks 211 inside the groove on one side of the grooved disc 21. When the disc 22 shifts relative to the grooved disc 21, one of the pressure blocks 213 at one end of the disc 22 will squeeze the airbag block 211, causing air inside the airbag block 211 to enter the protective shell 214, increasing the pressure inside the protective shell 214. The pressure sensor 212 converts the received pressure parameters into electrical signals and outputs them to the control system. The control system determines whether the pressure has reached a threshold. If the threshold is reached, the data is transmitted to the control center for issuance. An alarm is triggered to alert maintenance personnel that the rotational speeds of the first shaft 5 and the second shaft 6 of the turbine have deviated, facilitating timely maintenance. A buffer device 2, connected to the first shaft 5 and the second shaft 6 via a grooved plate 21 and a disc 22, allows for small displacement deviations between the grooved plate 21 and the disc 22 during turbine operation. This buffers the uneven rotational speeds of the first shaft 5 and the second shaft 6 caused by the speed difference. A pressure sensor 212 detects the deviation and promptly sends a signal to the control center to alert maintenance personnel, enabling timely shutdown and maintenance, thus improving the stability and service life of the turbine.

[0028] Reference Figure 2-8 As shown in this embodiment: a buffer groove 29 is provided on one side of the sector block 27, and a number of rubber buffer rods 210 are fixedly connected to the inner wall of the groove on one side of the slotted plate 21. The outer surface of the buffer rods 210 is located inside the buffer groove 29. When the disc 22 rotates relative to the slotted plate 21, the number of buffer rods 210 inside the groove on one side of the slotted plate 21 will move relative to the buffer groove 29 on the outer surface of the sector block 27. The rotation between the slotted plate 21 and the disc 22 is further buffered by the contact between the rubber buffer rods 210 and the inner wall of the sector block 27.

[0029] Reference Figure 2-8As shown in this embodiment: two reinforcing frames 217 are fixedly connected to the inner wall of the groove on one side of the slot 21. The two reinforcing frames 217 are respectively fixed above the two airbag blocks 211 on one side of the slot 21. By setting the reinforcing frames 217, the position of the airbag blocks 211 can be restricted, so that the airbag blocks 211 are not easily deformed upward after being squeezed, thus affecting the air compression effect. Two L-shaped pieces 215 are fixedly connected to one side of the disc 22. The end of the L-shaped piece 215 away from the disc 22 is arc-shaped. When connecting the slot 21 and the disc 22, the two L-shaped pieces on the outer surface of the disc 22 are... The arc-shaped edges of the L-shaped piece 215 are respectively locked on both sides of the outer surface edge of the groove plate 21, which can more conveniently position the disc 22 and the groove plate 21 for easy installation. One end of the L-shaped piece 215 is fixedly connected to a circular positioning rod 216. One side of the positioning rod 216 is attached to the outer surface of the groove plate 21. After the first shaft 5 and the second shaft 6 are connected through the groove plate 21 and the disc 22, the positioning rod 216 can further tighten the angle between the groove plate 21 and the disc 22 during the rotation of the first shaft 5 and the second shaft 6, thereby improving the stability of the buffer device 2 after installation.

[0030] Working principle: When installing the turbine, align the grooved disc 21 at one end of the first shaft 5 with the disc 22 at one end of the second shaft 6. Then move the second shaft 6 so that one side of the disc 22 fits against the outer surface of the grooved disc 21, aligning the through hole 23 on the outer surface of the disc 22 with the threaded hole 28 on the outer surface of each sector block 27 on one side of the grooved disc 21. Also, align the two pressure blocks 213 at one end of the disc 22 with the sides of the two airbag blocks 211 inside the groove on one side of the grooved disc 21. Finally, insert several bolts 24 through the through hole 23 on the outer surface of the disc 22. At the threaded hole 28 on the outer surface of the sector block 27, rotate the bolt 24 to make the bolt 24 enter the threaded hole 28 on the outer surface of the sector block 27 and connect with the inner wall of the threaded hole 28. Fix the disc 22 to each sector block 27 on one side of the grooved disc 21, so that the disc 22 fits against one side of the grooved disc 21. The first shaft 5 and the second shaft 6 are connected through the grooved disc 21 and the disc 22. When the turbine is working, the high-pressure working fluid enters the interior of the housing 1 through the feed pipe 3 and moves to both ends of the housing 1 respectively. The working fluid enters the outer surface of the first shaft 5 and the second shaft 6 and passes through the turbine. The turbine blades 7 and stator 8 drive the turbine blades 7 to rotate, converting thermal energy into mechanical energy. This mechanical energy is then transmitted to the generator via the engine shaft connected to the first shaft 5 or the second shaft 6 through a coupling. The working fluid is output through the discharge pipes 4 at both ends of the housing 1. If a speed difference occurs during the rotation of the first shaft 5 and the second shaft 6, the disc 22 will cause the sector block 27 to slide inside the groove on one side of the slotted disc 21 and compress the spring 26. This allows the disc 22 to rotate slightly relative to the slotted disc 21, and the spring 26 pushes the sector block 27 in the groove. The position inside the disc 21 is restricted and buffered. At the same time, a pressure block 213 at one end of the disc 22 will squeeze the airbag block 211, causing the air inside the airbag block 211 to enter the protective shell 214, increasing the pressure inside the protective shell 214. The pressure sensor 212 converts the received pressure parameters into an electrical signal and outputs it to the control system. The control system determines whether the pressure has reached the threshold. If the threshold is reached, the data is transmitted to the control center to issue an alarm, prompting maintenance personnel that the speed of the first shaft 5 and the second shaft 6 of the turbine has deviated, so as to facilitate timely maintenance.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A turbine for sensible heat energy storage and power generation, comprising a casing (1), characterized in that: The top of the housing (1) is provided with a feed pipe (3), and two discharge pipes (4) are fixedly connected to one side of the housing (1). The inside of the housing (1) is rotatably connected to a first shaft (5) and a second shaft (6). The outer surfaces of the first shaft (5) and the second shaft (6) are fixedly connected to a number of turbine blades (7). The inner walls of the housing (1) are fixedly connected to a number of stators (8). The first shaft (5) and the second shaft (6) rotate on the inner walls of the stators (8). The first shaft (5) and the second shaft (6) are connected by a buffer device (2).

2. The turbine for sensible heat energy storage and power generation according to claim 1, characterized in that: The buffer device (2) includes a grooved plate (21) and a disc (22). One side of the grooved plate (21) is fixedly connected to one end of the first shaft (5), and one side of the disc (22) is fixedly connected to one end of the second shaft (6). The outer surface of the disc (22) is provided with several through holes (23), and bolts (24) are slidably inserted into the inner wall of the through holes (23). One side of the grooved plate (21) is provided with a groove, and several stops (25) are fixedly connected to the inner wall of the groove on one side of the grooved plate (21). 21) Several sector blocks (27) are slidably connected to the inner wall of the groove on one side. A high-strength spring (26) is provided on one side of the sector block (27). The two ends of the spring (26) are fixedly connected to one side of the sector block (27) and one side of the stop block (25), respectively. The stop block (25) and the sector block (27) are circumferentially distributed in the groove on one side of the slot plate (21). Two threaded holes (28) are opened on the outer surface of the sector block (27). The outer surface of the bolt (24) is threaded to the inner wall of the threaded hole (28).

3. A turbine for sensible heat energy storage and power generation according to claim 2, characterized in that: A protective shell (214) is fixedly connected to the inner wall of the groove on one side of the tray (21). A pressure sensor (212) is installed inside the protective shell (214). Two airbag blocks (211) are fixedly connected to the inner wall of the groove on one side of the tray (21). The airbag blocks (211) are filled with air. One side of the airbag blocks (211) is connected to the inside of the protective shell (214) through a connecting pipe. Two pressure blocks (213) are fixedly connected to one side of the disc (22).

4. A turbine for sensible heat energy storage and power generation according to claim 3, characterized in that: A buffer groove (29) is provided on one side of the sector block (27), and a number of rubber buffer rods (210) are fixedly connected to the inner wall of the groove on one side of the slot plate (21). The outer surface of the buffer rods (210) is located inside the buffer groove (29).

5. A turbine for sensible heat energy storage and power generation according to claim 4, characterized in that: Two reinforcing frames (217) are fixedly connected to the inner wall of the groove on one side of the tray (21), and the two reinforcing frames (217) are respectively fixed above the two airbag blocks (211) on one side of the tray (21).

6. A turbine for sensible heat energy storage and power generation according to claim 5, characterized in that: Two L-shaped pieces (215) are fixedly connected to one side of the disk (22), and the end of the L-shaped piece (215) away from the disk (22) is arc-shaped.

7. A turbine for sensible heat energy storage and power generation according to claim 6, characterized in that: One end of the L-shaped piece (215) is fixedly connected to a circular positioning rod (216), and one side of the positioning rod (216) is attached to the outer surface of the slot (21).

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