Steam medium phase change heat storage power generation system
By installing a cleaning device inside the air intake pipe, the scale is scraped off by a scraper driven by steam, which solves the problem of scale accumulation in the steam medium phase change thermal power generation system, improves system efficiency and reduces operating costs.
Patent Information
- Application Number
- CN202423046603.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In a steam-medium phase change thermal energy storage system, dissolved minerals in the steam precipitate at high temperatures to form scale, which reduces the inner diameter of the intake pipe, increases flow resistance, lowers heat exchange efficiency, and increases operating costs.
A cleaning device is installed inside the air intake pipe, including components such as a reciprocating screw, scraper ring, and slider. Steam drives the blades to rotate and scrape away scale, ensuring that the inner diameter of the pipe does not decrease and improving steam flow efficiency.
It effectively removes scale from the air intake pipe, maintains the inner diameter of the pipe, improves the efficiency of steam entering the tank, and reduces system operating costs.
Smart Images
Figure CN223550434U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy storage and power generation technology, and in particular to a steam medium phase change thermal energy storage and power generation system. Background Technology
[0002] Steam-medium phase change thermal energy storage (SCE) power generation systems utilize the property of phase change materials to absorb or release large amounts of heat during melting or solidification to store thermal energy. This type of system can store thermal energy when electricity demand is low and release it when demand is high, thereby improving the flexibility and efficiency of the power system. The steam accumulator is a crucial component in these systems; steam enters the accumulator and is stored or released according to usage requirements.
[0003] When steam flows through the inlet pipe into the accumulator, under high temperature, dissolved minerals in the steam easily precipitate from the water and gradually deposit in the form of tiny crystals on the inner wall of the pipe and inside the nozzle. Over time, this forms a layer of scale that accumulates inside the inlet pipe, reducing the effective inner diameter of the pipe and nozzle, increasing the steam flow resistance, and causing a decrease in the heat exchange efficiency between the steam and the medium inside the accumulator. This leads to an increase in the operating cost of the steam medium phase change thermal energy storage power generation system. Utility Model Content
[0004] The purpose of this invention is to address the problem that when steam flows through the inlet pipe into the accumulator, under high temperature, dissolved minerals in the steam easily precipitate from the water and gradually deposit as tiny crystals on the inner wall of the pipe and inside the nozzle. Over time, this forms a layer of scale that accumulates inside the inlet pipe, reducing the effective inner diameter of the pipe and nozzle, increasing steam flow resistance, and leading to a decrease in the heat exchange efficiency between the steam and the medium inside the accumulator, thus increasing the operating cost of the steam medium phase change thermal energy storage power generation system. Therefore, this invention proposes a steam medium phase change thermal energy storage power generation system.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a steam medium phase change thermal energy storage power generation system, including a tank body, an inlet pipe and an outlet pipe fixedly connected to the top of the outer surface of the tank body, flanges for connecting to steam conveying pipelines are provided at the top of the inlet pipe and the outlet pipe, and a cleaning device for cleaning scale on the inner wall of the inlet pipe is provided inside the inlet pipe with the aid of a convenient device.
[0006] The effects achieved by the above components are as follows: When using a steam accumulator, the steam delivery pipe and the output pipe are connected to the inlet pipe and the outlet pipe at the top of the tank through flanges, respectively. When the energy storage power station generates electricity, high-temperature steam enters the tank through the inlet pipe. When the steam load decreases, the excess high-temperature steam is stored in the soft water inside the tank through the heat charging device inside the tank, causing the temperature and pressure of the soft water to rise and form saturated water. When the demand for power generation increases and the steam load rises, the pressure inside the tank decreases, and the high-temperature saturated water becomes superheated water and evaporates, generating steam which is output through the outlet pipe.
[0007] Preferably, the cleaning device includes two support rods, and a reciprocating screw is rotatably connected to one side of the two support rods that are close to each other. The outer surface of the reciprocating screw has helical grooves in opposite directions. A plurality of blades are fixedly connected to one end of the reciprocating screw. A slider is threadedly connected to the outer surface of the reciprocating screw. A positioning rod is fixedly connected to one side of the two support rods that are close to each other. The slider slides on the outer surface of the positioning rod. A ring is fixedly connected to the outer surface of the slider. A scraper ring is rotatably connected to the outer surface of the ring.
[0008] The effect achieved by the above-mentioned components is as follows: By setting up a scraper ring, when installing the steam accumulator, the cleaning device can be conveniently installed inside the air inlet pipe. When the steam accumulator is working, steam enters the tank through the air inlet pipe, which drives the blade at one end of the reciprocating screw to rotate. The blade drives the reciprocating screw to rotate, which in turn drives the slider to move back and forth on the outer surface of the reciprocating screw and the positioning rod. This causes the scraper ring on the outer surface of the ring to slide on the inner wall of the air inlet pipe. The scraper ring scrapes and cleans the scale adhering to the inner wall of the air inlet pipe, minimizing the accumulation of scale inside the air inlet pipe, which would reduce the inner diameter of the air inlet pipe and affect the efficiency of steam entering the tank and the working efficiency of the steam accumulator.
[0009] Preferably, a protrusion is fixedly connected to the outer surface of the scraper ring, and a guide groove is provided on the inner wall of the air intake pipe, and the outer surface of the protrusion slides on the inner wall of the guide groove.
[0010] The effect achieved by the above components is as follows: when the slider drives the ring and scraper ring to move, the protrusions on the outer surface of the scraper ring will move inside the guide groove, causing the scraper ring to rotate during movement, thereby improving the scraping and cleaning effect of the scraper ring on the inner wall of the intake pipe.
[0011] Preferably, an auxiliary component is provided on one side of the slider. The auxiliary component includes a threaded ring. One side of the threaded ring is rotatably connected to one side of the slider. Several hard brushes are fixedly connected to the outer surface of the threaded ring. A threaded groove is opened on the outer surface of the positioning rod. The inner wall of the threaded ring is threadedly connected to the outer surface of the positioning rod with the threaded groove.
[0012] The effect achieved by the above components is as follows: when the slider moves on the outer surface of the reciprocating screw, the threaded ring will rotate on the outer surface of the positioning rod and one side of the slider. The hard brush on the outer surface of the threaded ring can clean the helical groove on the outer surface of the reciprocating screw, so as to avoid the scale on the helical groove of the reciprocating screw surface from affecting the normal movement of the slider on the surface of the reciprocating screw.
[0013] Preferably, the convenient device includes two locking blocks, and each end of one of the support rods is provided with a sliding groove. The two locking blocks slide on the inner walls of the two sliding grooves respectively. A spring is provided on one side of each locking block, and the two ends of the spring are fixedly connected to one side of the locking block and one side of the inner wall of the sliding groove respectively. Rectangular grooves are provided on both sides of the inner wall of the air intake pipe, and locking grooves are provided on the inner walls of the rectangular grooves.
[0014] The effect achieved by the above components is as follows: When the cleaning device is installed inside the air intake pipe, the two ends of the two support rods are respectively pressed against the inner walls of the two rectangular slots inside the air intake pipe. The support rods are pushed to slide on the inner walls of the rectangular slots. When one end of the locking block at both ends of the upper support rod contacts the inner wall of the air intake pipe, the locking block will slide towards the spring on the inner wall of the slide groove and compress the spring. When the lower support rod contacts the bottom end of the inner wall of the rectangular slot, the spring inside the slide groove at both ends of the upper support rod will return to its original state and push the locking block to slide outward on the inner wall of the slide groove. The locking block is inserted into the slot to fix the position of the support rod inside the rectangular slot. When it is necessary to clean the components of the cleaning device, push the two locking blocks out of the slot and then remove the support rod from the rectangular slot.
[0015] Preferably, a metal sheet is fixedly connected to one end of the card block, and the top edge of the metal sheet is arc-shaped.
[0016] The effect achieved by the above components is that when removing the cleaning device, pushing the support rod upwards to make the arc-shaped edge of the metal plate at the top of the locking block contact the top of the inner wall of the locking groove makes it easier to slide the locking block towards the spring, making it easier to move the position of the support rod to remove the cleaning device.
[0017] Preferably, a round rod is fixedly connected to one side of the card block, and the outer surface of the round rod slides on the inner wall of the support rod.
[0018] The effect achieved by the above components is that when the locking block slides on the inner wall of the groove, the round rod will slide on the inner wall of the support rod. The round rod can further limit the angle between the locking block and the support rod, and avoid the angle of the locking block from deviating as much as possible.
[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0020] In this invention, a cleaning device is installed. Steam enters the tank through the inlet pipe, driving the reciprocating screw to rotate. The slider moves back and forth on the outer surface of the reciprocating screw and the positioning rod, driving the scraper ring to scrape and clean the scale adhering to the inner wall of the inlet pipe. This minimizes the accumulation of scale inside the inlet pipe, which would reduce the inner diameter of the inlet pipe and affect the efficiency of steam entering the tank and the working efficiency of the steam accumulator. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the air intake pipe of this utility model;
[0023] Figure 3 This utility model Figure 2 A magnified three-dimensional structural diagram of point A;
[0024] Figure 4 This is a three-dimensional structural diagram of the scraper ring of this utility model;
[0025] Figure 5 This is a three-dimensional structural diagram of the card block of this utility model.
[0026] Legend: 1. Tank; 2. Cleaning device; 3. Convenient device; 4. Air inlet pipe; 5. Air outlet pipe; 21. Support rod; 22. Reciprocating screw; 23. Paddle; 24. Positioning rod; 25. Slider; 26. Ring; 27. Scraper ring; 28. Auxiliary component; 281. Threaded groove; 282. Threaded ring; 283. Hard brush; 29. Protrusion; 210. Guide groove; 31. Rectangular groove; 32. Slot; 33. Slide groove; 34. Block; 35. Spring; 36. Metal sheet; 37. Round rod. Detailed Implementation
[0027] Example 1, such as Figure 1-3As shown, a steam medium phase change thermal energy storage power generation system includes a tank 1. An inlet pipe 4 and an outlet pipe 5 are fixedly connected to the top of the outer surface of the tank 1. The top of the inlet pipe 4 and the outlet pipe 5 are provided with flanges for connecting to steam transmission pipelines. The inside of the inlet pipe 4 is equipped with a cleaning device 2 for cleaning scale on the inner wall of the inlet pipe 4 by means of a convenient device 3. When using the steam accumulator, the steam transmission pipeline and the output pipeline are connected to the inlet pipe 4 and the outlet pipe 5 at the top of the tank 1 respectively through flanges. When the energy storage power station generates electricity, high-temperature steam enters the inside of the tank 1 through the inlet pipe 4. When the steam load decreases, the excess high-temperature steam is stored in the soft water inside the tank 1 through the heat charging device inside the tank 1, causing the temperature and pressure of the soft water to rise and form saturated water. When the power generation demand increases and the steam load rises, the pressure inside the tank 1 decreases, and the high-temperature saturated water becomes superheated water and evaporates, generating steam which is output through the outlet pipe 5.
[0028] Reference Figure 2-5 As shown in this embodiment: the cleaning device 2 includes two support rods 21. A reciprocating screw 22 is rotatably connected to one side of the two support rods 21 that is close to each other. The outer surface of the reciprocating screw 22 has helical grooves in opposite directions. Several blades 23 are fixedly connected to one end of the reciprocating screw 22. A slider 25 is threadedly connected to the outer surface of the reciprocating screw 22. A positioning rod 24 is fixedly connected to one side of the two support rods 21 that is close to each other. The slider 25 slides on the outer surface of the positioning rod 24. A ring 26 is fixedly connected to the outer surface of the slider 25. A scraper ring 27 is rotatably connected to the outer surface of the ring 26. By setting the scraper ring 27, when installing the steam accumulator, the cleaning device 2 can be installed inside the air inlet pipe 4 with the help of the convenient device 3. When the steam accumulator is working, steam enters the tank 1 through the air inlet pipe 4 and drives the blades 23 at one end of the reciprocating screw 22 to rotate. The blades 23 drive the reciprocating screw 22 to rotate. The lead screw 22 rotates, driving the slider 25 to move back and forth on the outer surfaces of the reciprocating lead screw 22 and the positioning rod 24. This causes the scraper ring 27 on the outer surface of the ring 26 to slide on the inner wall of the air inlet pipe 4. The scraper ring 27 scrapes and cleans the scale adhering to the inner wall of the air inlet pipe 4, minimizing the accumulation of scale inside the air inlet pipe 4, which would reduce the inner diameter of the air inlet pipe 4 and affect the efficiency of steam entering the tank 1 and the working efficiency of the steam accumulator. The outer surface of the scraper ring 27 is fixedly connected to a protrusion 29, and a guide groove 210 is opened on the inner wall of the air inlet pipe 4. The outer surface of the protrusion 29 slides on the inner wall of the guide groove 210. When the slider 25 drives the ring 26 and the scraper ring 27 to move, the protrusion 29 on the outer surface of the scraper ring 27 will move inside the guide groove 210, causing the scraper ring 27 to rotate during movement, thus improving the scraping and cleaning effect of the scraper ring 27 on the inner wall of the air inlet pipe 4.
[0029] Reference Figure 2-5As shown in this embodiment: an auxiliary component 28 is provided on one side of the slider 25. The auxiliary component 28 includes a threaded ring 282. One side of the threaded ring 282 is rotatably connected to one side of the slider 25. Several hard brushes 283 are fixedly connected to the outer surface of the threaded ring 282. The outer surface of the positioning rod 24 is provided with a threaded groove 281. The inner wall of the threaded ring 282 is threadedly connected to the outer surface of the positioning rod 24 with the threaded groove 281. When the slider 25 moves on the outer surface of the reciprocating screw 22, the threaded ring 282 will rotate on the outer surface of the positioning rod 24 and one side of the slider 25. The hard brushes 283 on the outer surface of the threaded ring 282 can clean the spiral groove on the outer surface of the reciprocating screw 22, so as to avoid the scale on the spiral groove of the reciprocating screw 22 from affecting the normal movement of the slider 25 on the surface of the reciprocating screw 22.
[0030] Reference Figure 1-5 As shown in this embodiment: the convenient device 3 includes two locking blocks 34, and a support rod 21 with sliding grooves 33 at both ends. The two locking blocks 34 slide on the inner walls of the two sliding grooves 33 respectively. A spring 35 is provided on one side of the locking block 34, and the two ends of the spring 35 are fixedly connected to one side of the locking block 34 and one side of the inner wall of the sliding groove 33 respectively. Rectangular grooves 31 are provided on both sides of the inner wall of the air intake pipe 4, and locking grooves 32 are provided on the inner wall of the rectangular grooves 31. When the cleaning device 2 is installed inside the air intake pipe 4, the two ends of the two support rods 21 are respectively pressed against the inner walls of the two rectangular grooves 31 inside the air intake pipe 4, pushing the support rods 21 to slide on the inner walls of the rectangular grooves 31. When one end of the locking block 34 at both ends of the square support rod 21 contacts the inner wall of the air intake pipe 4, the locking block 34 will slide towards the spring 35 on the inner wall of the slide groove 33 and compress the spring 35. When the lower support rod 21 contacts the bottom end of the inner wall of the rectangular groove 31, the spring 35 inside the slide groove 33 at both ends of the upper support rod 21 will return to its original state and push the locking block 34 to slide outward on the inner wall of the slide groove 33, inserting the locking block 34 into the slot 32 to fix the position of the support rod 21 inside the rectangular groove 31. When it is necessary to clean the components of the cleaning device 2, push the two locking blocks 34 out of the slot 32 and then take the support rod 21 out of the rectangular groove 31.
[0031] Reference Figure 2-5As shown in this embodiment: a metal plate 36 is fixedly connected to one end of the locking block 34. The top edge of the metal plate 36 is arc-shaped. When the cleaning device 2 is removed, the support rod 21 is pushed upward to make the arc-shaped edge of the metal plate 36 at the top of the locking block 34 contact the top of the inner wall of the slot 32, which makes it easier for the locking block 34 to slide towards the spring 35. This facilitates the movement of the support rod 21 to remove the cleaning device 2. A round rod 37 is fixedly connected to one side of the locking block 34. The outer surface of the round rod 37 slides on the inner wall of the support rod 21. When the locking block 34 slides on the inner wall of the slot 33, the round rod 37 will slide on the inner wall of the support rod 21. The round rod 37 can further limit the angle between the locking block 34 and the support rod 21, and avoid the angle of the locking block 34 from deflecting as much as possible.
[0032] Working principle: When using the steam accumulator, the two ends of the two support rods 21 are respectively pressed against the inner walls of the two rectangular grooves 31 inside the air inlet pipe 4, pushing the support rods 21 to slide on the inner walls of the rectangular grooves 31. When one end of the locking block 34 at both ends of the upper support rod 21 contacts the inner wall of the air inlet pipe 4, the locking block 34 will slide towards the spring 35 on the inner wall of the slide groove 33 and compress the spring 35. When the lower support rod 21 contacts the bottom end of the inner wall of the rectangular groove 31, the spring 35 inside the slide groove 33 at both ends of the upper support rod 21 will return to its original state and push the locking block 34 to slide outward on the inner wall of the slide groove 33, inserting the locking block 34 into the slot 32 to fix the position of the support rod 21 inside the rectangular groove 31. Then, the steam delivery pipe and the output pipe are connected to the air inlet pipe 4 and the air outlet pipe 5 at the top of the tank 1 through flanges. When the energy storage power station generates electricity, high-temperature steam enters the tank 1 through the air inlet pipe 4, and the steam passes through... When passing the blade 23, it will drive the blade 23 to rotate, which in turn drives the reciprocating screw 22 to rotate. The reciprocating screw 22 drives the slider 25 to move back and forth on the outer surface of the reciprocating screw 22 and the positioning rod 24, which drives the scraper ring 27 on the outer surface of the ring 26 to slide on the inner wall of the air intake pipe 4. The scraper ring 27 scrapes and cleans the scale attached to the inner wall of the air intake pipe 4. When the scraper ring 27 moves, the protrusion 29 on the outer surface will move inside the guide groove 210, causing the scraper ring 27 to rotate during movement, which improves the scraping and cleaning effect of the scraper ring 27 on the inner wall of the air intake pipe 4. When the steam load decreases, the excess high-temperature steam is stored in the soft water inside the tank 1 through the heat charging device inside the tank 1, which increases the temperature and pressure of the soft water to form saturated water. When the power generation demand increases and the steam load increases, the pressure inside the tank 1 decreases, and the high-temperature saturated water becomes superheated water and evaporates, generating steam that is output through the exhaust pipe 5.
[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.
Claims
1. A steam medium phase change thermal power generation system, comprising a tank (1), characterized in that: The top of the outer surface of the tank (1) is fixedly connected to an air inlet pipe (4) and an air outlet pipe (5). The top of the air inlet pipe (4) and the air outlet pipe (5) are provided with flanges for connecting to steam conveying pipelines. The inside of the air inlet pipe (4) is provided with a cleaning device (2) for cleaning scale on the inner wall of the air inlet pipe (4) by means of a convenient device (3).
2. The steam medium phase change thermal energy storage power generation system according to claim 1, characterized in that: The cleaning device (2) includes two support rods (21). A reciprocating screw (22) is rotatably connected to one side of the two support rods (21) that are close to each other. The outer surface of the reciprocating screw (22) is provided with spiral grooves in opposite directions. A number of blades (23) are fixedly connected to one end of the reciprocating screw (22). A slider (25) is threadedly connected to the outer surface of the reciprocating screw (22). A positioning rod (24) is fixedly connected to one side of the two support rods (21) that are close to each other. The slider (25) slides on the outer surface of the positioning rod (24). A ring (26) is fixedly connected to the outer surface of the slider (25). A scraper ring (27) is rotatably connected to the outer surface of the ring (26).
3. The steam medium phase change thermal energy storage power generation system according to claim 2, characterized in that: The outer surface of the scraper ring (27) is fixedly connected with a protrusion (29), and the inner wall of the air intake pipe (4) is provided with a guide groove (210). The outer surface of the protrusion (29) slides on the inner wall of the guide groove (210).
4. The steam medium phase change thermal energy storage power generation system according to claim 3, characterized in that: One side of the slider (25) is provided with an auxiliary component (28) that can clean the surface of the reciprocating lead screw (22).
5. A steam-medium phase change thermal energy storage power generation system according to claim 4, characterized in that: The auxiliary component (28) includes a threaded ring (282), one side of which is rotatably connected to one side of the slider (25). Several hard brushes (283) are fixedly connected to the outer surface of the threaded ring (282). The outer surface of the positioning rod (24) is provided with a threaded groove (281). The inner wall of the threaded ring (282) is threadedly connected to the outer surface of the positioning rod (24) which is provided with the threaded groove (281).
6. The steam medium phase change thermal power generation system according to claim 5, characterized in that: The convenient device (3) includes two locking blocks (34), and each end of the support rod (21) is provided with a sliding groove (33). The two locking blocks (34) slide on the inner walls of the two sliding grooves (33). A spring (35) is provided on one side of the locking block (34). The two ends of the spring (35) are fixedly connected to one side of the locking block (34) and one side of the inner wall of the sliding groove (33), respectively. Rectangular grooves (31) are provided on both sides of the inner wall of the air intake pipe (4), and locking grooves (32) are provided on the inner wall of the rectangular grooves (31).
7. A steam-medium phase change thermal energy storage power generation system according to claim 6, characterized in that: One end of the card block (34) is fixedly connected to a metal sheet (36), and the top edge of the metal sheet (36) is arc-shaped.
8. A steam-medium phase change thermal energy storage power generation system according to claim 6, characterized in that: A round rod (37) is fixedly connected to one side of the card block (34), and the outer surface of the round rod (37) slides on the inner wall of the support rod (21).