A power generation system utilizing the residual energy of coal gasification

Abstract

The present invention discloses a power generation system using the residual energy of coal gasification in the field of coal power generation technology, including a heating furnace. A water tank is fixedly installed at the top of the heating furnace. Heat conduction columns are fixedly installed inside the heating furnace and the water tank. A gas storage tank is fixedly installed at the bottom of the inner cavity of the heating furnace. A sealing cylinder is fixedly installed at the top of the gas storage tank. In the present invention, by providing a gas storage tank, the flue gas entering the interior of the heating furnace causes the helium gas filled in the inner cavity of the gas storage tank to expand due to heat, and then pushes the sealing column upward, driving the second spring, the connecting rod and the moving column upward, so that the driving cylinder and the moving disk are driven upward. During the movement of the moving disk, the kinetic energy of the water in the inner cavity of the water tank can be greatly increased. Such a design enables the heat of the heat conduction column to be quickly conducted to the water in the inner cavity of the water tank with increased kinetic energy during the startup period of the system, and the rapid heating and evaporation of the water can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of coal power generation, and specifically to a power generation system that utilizes the residual energy of coal gasification. Background Art

[0002] Coal power generation is the main way of power generation in China. After passing through a gasifier, coal will release energy in two ways. On the one hand, it drives a gas turbine to generate electricity. On the other hand, the residual energy (i.e., waste heat) after combustion enters a waste heat boiler. By heating water, the water is turned into steam and drives a gas turbine to generate electricity. In fact, it is a complete set of power generation systems.

[0003] At present, in the power generation system that utilizes the residual energy of coal gasification, the waste heat boiler is of utmost importance. It mainly uses the residual energy of coal gasification to heat the water in the waste heat boiler. The bottom of the waste heat boiler is the flue gas passage area, and the upper part is a water tank. The water in the water tank is heated by heating the heat conduction columns in the flue gas passage area. However, currently, when starting the waste heat boiler, most of the water in the water tank is cold water. If waiting directly for the water to be heated, the heating efficiency will be greatly reduced. Since the heat conduction mechanism can only conduct heat simply, the water to be heated in the water tank cannot be quickly heated when the system starts.

[0004] At the same time, the residual energy of coal gasification heats the heat conduction columns in the form of flue gas. During the process of the flue gas passing through, after its heat is transferred to the heat conduction columns, the overall heat will decrease, resulting in a slightly lower temperature of the flue gas in the later stage of movement, thus causing the overall downward shift, and then leading to uneven heating on the outer surface of the heat conduction columns, which is likely to reduce the service life of the heat conduction columns.

[0005] In addition, the flue gas contains a large amount of dust. Over time, a layer of dust will adhere to the outer surface of the heat conduction. In the prior art, mainly the heat conduction columns are removed for regular cleaning, but this method is inefficient and cannot adapt to the continuous operation of the waste heat boiler. Over time, it is likely to cause a decrease in the heat conduction ability of the heat conduction columns and waste energy. Summary of the Invention

[0006] The purpose of the present invention is to provide a power generation system that utilizes the residual energy of coal gasification to solve the problems of waste of energy caused by inability to quickly heat, uneven heating, and inconvenient dust removal as mentioned in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solution: A power generation system using the residual energy of coal gasification, including a heating furnace, a water tank is fixedly installed at the top of the heating furnace, heat conduction columns are fixedly installed inside the heating furnace and the water tank, a gas storage tank is fixedly installed at the bottom of the inner cavity of the heating furnace, a sealing cylinder is fixedly installed at the top of the gas storage tank, a sealing column and a third spring are movably sleeved inside the sealing cylinder, a driving plate is fixedly sleeved on the outer surface of the sealing column, a connecting column is fixedly installed at the bottom end of the driving plate, a dust removal mechanism is fixedly installed on the outer surface of the connecting column, a moving ring located below the driving plate is movably sleeved on the outer surface of the sealing column, a second spring is fixedly connected between the moving ring and the driving plate, a connecting rod is fixedly installed at the top of the moving ring, a moving column is fixedly installed at the top of the connecting rod, a driving cylinder is hermetically sleeved on the outer surface of the moving column, the top of the outer surface of the driving cylinder penetrates upward into the inner cavity of the water tank and is fixedly sleeved with a moving disk, and helium gas is filled in the inner cavities of the gas storage tank and the driving cylinder;

[0008] As Figure 3 and 8 shown, after the flue gas enters the inner cavity of the heating furnace, it will quickly heat the heat conduction column and the gas storage tank. After the heat conduction column is heated, it gradually heats the water in the water tank. At this time, the helium gas in the gas storage tank begins to be heated and expands rapidly, pushing the sealing column upward, driving the driving plate, the connecting column and the dust removal mechanism to move upward. At the same time, the second spring is stretched upward, so that the second spring drives the connecting rod and the moving column to move upward, driving the driving cylinder and the moving disk to move upward. The helium gas in the inner cavity of the driving cylinder begins to heat up after being compressed. At this time, the moving disk is driven to move upward, so that the water in the water tank is driven to roll, making the heating speed of the water tank faster, and rapid heating can be achieved after the heating furnace is started;

[0009] By providing a gas storage tank, the flue gas entering the inside of the heating furnace heats the helium gas filled in the inner cavity of the gas storage tank and expands, and then pushes the sealing column upward, driving the second spring, the connecting rod and the moving column to move upward, so that the driving cylinder and the moving disk are driven to move upward. During the movement of the moving disk, the kinetic energy of the water in the inner cavity of the water tank can be greatly increased. Such a design enables the heat of the heat conduction column to be quickly conducted to the water in the inner cavity of the water tank with increased kinetic energy during the start-up period of the system, and rapid heating and evaporation of the water can be achieved.

[0010] As a further solution of the present invention, the number of the gas storage tanks is four, and four moving rings are movably sleeved on the four gas storage tanks respectively through the sealing cylinders and the sealing columns. The front and rear ends of the outer surface of each moving ring are fixedly connected with a flow dividing plate;

[0011] As Figure 3 and 4As shown in the figure, when the sealing column moves upward under the push of the helium gas that expands due to heat in the inner cavity of the gas storage tank and drives the driving plate, moving ring, second spring, connecting rod, moving column, driving cylinder and moving plate to move upward, the water temperature in the inner cavity of the water tank begins to gradually rise, causing the helium gas in the inner cavity of the driving cylinder to be heated and expand. At the same time, it pushes the moving column downward, driving the connecting rod and the moving ring to move downward, stretching the second spring. The moving ring moving downward also drives the flow dividing plate downward at the same time. The flue gas entering the inner cavity of the heating furnace is divided into upper and lower flows through the flow dividing plate. As the flue gas enters the inner cavity of the heating furnace and is about to leave, the overall temperature decreases. The role of the flow dividing plate is to change the flow direction of the flue gas when the temperature of the flue gas decreases;

[0012] By providing a driving cylinder, after the water in the inner cavity of the water tank is heated, the helium gas in the inner cavity of the driving cylinder is heated and expanded, thereby pushing the moving column downward, driving the connecting rod and the moving ring to move downward, and finally driving the flow dividing plate to move downward. Through the inclined design of the driving plate, the flue gas entering the inner cavity of the heating furnace is divided into upper and lower flows. The flue gas just entering the inner cavity of the heating furnace is mixed with the flue gas about to leave, thereby reducing the upper and lower temperature difference of the flue gas and making the heat received by the heat conducting column more uniform.

[0013] As a further solution of the present invention, the dust removal mechanism includes a first spring. The top end of the first spring is fixedly connected with a first limiting ring. The top of the first limiting ring is fixedly installed with a first scraping ring. The bottom end of the first spring is fixedly connected with a second limiting ring. The top of the second limiting ring is fixedly installed with a second scraping ring. The first spring, the first limiting ring, the first scraping ring, the second limiting ring and the second scraping ring are all movably sleeved on the outer surface of the heat conducting column;

[0014] After the system is started, the flue gas enters the inner cavity of the heating furnace and continuously heats the gas storage tank. Since the helium gas in the inner cavity of the gas storage tank will expand rapidly after being heated, it will then push the sealing column and the driving plate upward, driving the connecting column and the dust removal mechanism to move upward. As shown in Figure 3 and 4 The upward moving connecting column will first drive the second limiting ring and the second scraping ring to move upward. At this time, the conical structure of the second scraping ring can not only continuously scrape the outer surface of the heat conducting column to remove dust, but also the inclined design can prevent the scraped dust from remaining. As the second limiting ring moves upward, the first spring begins to be gradually compressed and pushes the first limiting ring and the first scraping ring upward to complete the scraping and dust removal operation on the outer surface of the heat conducting column. As the top of the first scraping ring comes into limit contact with the bottom of the inner cavity of the heating furnace, the first spring continuously presses the first limiting ring and the first scraping ring under the action of the second limiting ring, squeezing the dust on the surfaces of the first limiting ring and the first scraping ring to avoid residue.

[0015] By providing a gas storage tank, a part of the heat of the flue gas entering the inner cavity of the heating furnace is obtained, and the helium gas in the inner cavity of the gas storage tank is heated to rapidly expand after being heated. Then, the sealing column, the driving plate, and the connecting column are pushed upward. By driving the second limiting ring and the second scraping ring upward, on the one hand, the first spring is pressed, and at the same time, the upward moving second scraping ring will scrape and remove dust on the outer surface of the heat conducting column, and the scraped dust will fall along its inclined outer surface. The compressed first spring starts to push the first limiting ring and the first scraping ring upward and synchronously scrape and remove dust on the outer surface of the heat conducting column through the first scraping ring, so that the outer surface of the heat conducting column is dusted once after each system startup, effectively removing the residues on the outer surface of the heat conducting column, facilitating the rapid heating of the heat conducting column, and saving energy.

[0016] As a further solution of the present invention, the sealing column is sealingly sleeved inside the sealing cylinder, and the outer surface of the sealing column is movably sleeved with a third spring, and both ends of the third spring are fixedly connected to the sealing cylinder and the sealing column respectively;

[0017] As Figure 3 shown, when the helium gas in the inner cavity of the gas storage tank expands due to heat, it will push the sealing column upward. At this time, the third spring is compressed. When the system stops running, the helium gas in the inner cavity of the gas storage tank no longer expands due to heat;

[0018] The restoring force generated by the compressed third spring drives the sealing column to move downward and reset, which helps to drive the sealing column to move upward again next time and repeat the operation of driving the dust removal mechanism to remove dust on the heat conducting column.

[0019] As a further solution of the present invention, the upper and lower outer edges of the moving disk are both processed with arc transitions. A through hole penetrating from the top to the bottom is opened at the top of the moving disk. The number of the through holes is nine, and the nine through holes are evenly distributed in a circumferential manner with the horizontal center of the moving disk as the reference. The through holes are inclined;

[0020] As Figure 1 、 3 and shown in Figure 4, when the moving disk is driven by the driving cylinder to move upward, it will encounter the resistance of the water in the inner cavity of the water tank. When the water passes through the surface of the moving disk, it will pass through the through holes, and the arc transition of the moving disk can also reduce the resistance;

[0021] While reducing the resistance, the inclined design of the through holes also makes the water have a certain flow trend, further improving the kinetic energy of the water in the inner cavity of the water tank and making the water heat up more quickly.

[0022] As a further solution of the present invention, when the top of the first limiting ring contacts the top of the inner cavity of the heating furnace, the first spring is in a compressed state;

[0023] As Figure 3 and4 As shown, when the first scraping ring contacts the top of the inner cavity of the heating furnace, the second limiting ring and the second scraping ring are still in the upward moving state. At the same time, the degree of compression of the first spring is increasing, making the force on the first limiting ring greater and greater. The first scraping ring begins to push away the dust accumulated on its top by extrusion, so that the dust is quickly removed.

[0024] As a further solution of the present invention, the number of the flow dividing plates is eight. The eight flow dividing plates are divided into four groups with every two as a group. The four groups of flow dividing plates are inclined horizontally to the lower right side, horizontally to the lower left side, horizontally to the lower right side, and horizontally to the lower left side from left to right in sequence;

[0025] As Figure 1 and 3 shown, the flue gas entering the inner cavity of the heating furnace will be divided by the flow dividing plates, so that the flue gas is fully mixed during the moving process, greatly avoiding the problem of uneven temperature distribution of the flue gas in the inner cavity of the heating furnace.

[0026] As a further solution of the present invention, the middle part of the outer surface of the driving cylinder is hermetically sleeved on the inner walls of the heating furnace and the water tank. When the moving column moves upward, the helium gas in the inner cavity of the driving cylinder is compressed;

[0027] As Figure 3 and 8 shown, the upward moving moving column will first enter the inner cavity of the driving cylinder and compress the helium gas filled therein. After the helium gas is compressed, it will absorb energy and be converted into internal energy. At the same time, the moving column drives the driving cylinder to move upward by compressing the helium gas, not only accelerating the heating speed of the water in the inner cavity of the water tank, but also heating the helium gas by compressing it, and finally heating the water in the inner cavity of the water tank for the second time.

[0028] As a further solution of the present invention, the number of the second springs is eight. The eight second springs are divided into four groups with every two as a group. Each group of second springs is distributed on the left and right sides of the outer surface of a sealing column. The two ends of the second spring are respectively fixedly connected with the driving plate and the moving ring;

[0029] During the upward movement of the sealing column, the second spring will be stretched first. After the second spring is stretched to the limit, the connecting rod and the moving column are driven to move upward by the resilience of the second spring, and finally the driving cylinder and the moving disk are driven to move upward, realizing the function of quickly heating after the system is started by tumbling the water tank.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. The present invention is provided with a gas storage tank, so that the flue gas entering the interior of the heating furnace causes the helium gas filled in the inner cavity of the gas storage tank to expand due to heat. Then, the sealing column is pushed upward, driving the second spring, the connecting rod and the moving column upward, so that the driving cylinder and the moving disk are driven upward. During the movement of the moving disk, the kinetic energy of the water in the inner cavity of the water tank can be greatly increased. Such a design enables the heat of the heat conducting column to be quickly conducted to the water in the inner cavity of the water tank with increased kinetic energy during the startup period of the system, and the rapid heating and evaporation of the water can be realized.

[0032] 2. The present invention is provided with a driving cylinder, so that after the water in the inner cavity of the water tank is heated, the helium gas in the inner cavity of the driving cylinder is heated and expanded, thereby pushing the moving column downward, driving the connecting rod and the moving ring downward, and finally driving the flow dividing plate downward. Through the inclined design of the driving plate, the flue gas entering the inner cavity of the heating furnace is shunted up and down, and the flue gas just entering the inner cavity of the heating furnace is mixed with the flue gas about to leave, so that the temperature difference between the upper and lower parts of the flue gas is reduced, and the heat receiving of the heat conducting column is more uniform.

[0033] 3. The present invention is provided with a gas storage tank to obtain a part of the heat of the flue gas entering the inner cavity of the heating furnace, heat the helium gas in the inner cavity of the gas storage tank to make it expand rapidly after being heated, and then push the sealing column, the driving plate and the connecting column upward. By driving the second limiting ring and the second scraping ring upward, on the one hand, the first spring is pressed, and at the same time, the upward moving second scraping ring will scrape and remove dust on the outer surface of the heat conducting column, and the scraped dust will fall along its inclined outer surface. The compressed first spring starts to push the first limiting ring and the first scraping ring upward and synchronously scrape and remove dust on the outer surface of the heat conducting column through the first scraping ring, so that the outer surface of the heat conducting column is dusted once after each startup of the system, and the residues on the outer surface of the heat conducting column are well removed, which is beneficial to the rapid heat receiving of the heat conducting column and saves energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a front view schematic diagram of the structure of the present invention;

[0036] Figure 3 It is a front partial sectional view schematic diagram of the structure of the present invention;

[0037] Figure 4 It is a schematic diagram of the positional relationship of the internal structure of the heating furnace of the present invention;

[0038] Figure 5 It is a separation schematic diagram of the sealing cylinder, the sealing column, the connecting column, the dust removal mechanism, the moving ring, the second spring, the connecting rod, the moving column, the driving cylinder, the moving disk and the flow dividing plate of the present invention;

[0039] Figure 6 Schematic diagram of the separation of the dust removal mechanism of the present invention;

[0040] Figure 7 Schematic diagram of the separation of the moving ring, second spring, connecting rod, moving column, driving cylinder, moving plate and flow dividing plate of the present invention;

[0041] Figure 8 For the present invention Figure 3 Enlarged schematic diagram of the structure at A in the present invention.

[0042] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0043] 1. Heating furnace; 2. Water tank; 3. Heat conduction column; 4. Gas storage tank; 5. Sealing cylinder; 6. Sealing column; 7. Driving plate; 8. Connecting column; 9. Dust removal mechanism; 91. First spring; 92. First limit ring; 93. First scraping ring; 94. Second limit ring; 95. Second scraping ring; 10. Moving ring; 11. Second spring; 12. Connecting rod; 13. Moving column; 14. Driving cylinder; 15. Moving plate; 16. Through hole; 17. Flow dividing plate; 18. Helium; 19. Third spring. Detailed implementation manners

[0044] Please refer to Figures 1 - 8 , the present invention provides a technical solution: A power generation system using the residual energy of coal gasification, including a heating furnace 1, a water tank 2 is fixedly installed on the top of the heating furnace 1, heat conduction columns 3 are fixedly installed inside the heating furnace 1 and the water tank 2, a gas storage tank 4 is fixedly installed at the bottom of the inner cavity of the heating furnace 1, a sealing cylinder 5 is fixedly installed on the top of the gas storage tank 4, a sealing column 6 and a third spring 19 are movably sleeved inside the sealing cylinder 5, a driving plate 7 is fixedly sleeved on the outer surface of the sealing column 6, a connecting column 8 is fixedly installed at the bottom end of the driving plate 7, a dust removal mechanism 9 is fixedly installed on the outer surface of the connecting column 8, a moving ring 10 is movably sleeved on the outer surface of the sealing column 6 and is located below the driving plate 7, a second spring 11 is fixedly connected between the moving ring 10 and the driving plate 7, a connecting rod 12 is fixedly installed on the top of the moving ring 10, a moving column 13 is fixedly installed on the top of the connecting rod 12, a driving cylinder 14 is sealingly sleeved on the outer surface of the moving column 13, the top of the outer surface of the driving cylinder 14 penetrates upward into the inner cavity of the water tank 2 and is fixedly sleeved with a moving plate 15, and helium 18 is filled in the inner cavities of the gas storage tank 4 and the driving cylinder 14;

[0045] Such as Figure 3 And 8As shown in the figure, after the flue gas enters the inner cavity of the heating furnace 1, it will quickly heat the heat conduction column 3 and the gas storage tank 4. After the heat conduction column 3 is heated, it gradually heats the water in the water tank 2. At this time, the helium 18 in the gas storage tank 4 begins to be heated and expands rapidly, pushing the sealing column 6 upward, driving the driving plate 7, the connecting column 8 and the dust removal mechanism 9 to move upward. At the same time, the second spring 11 is stretched upward, so that the second spring 11 drives the connecting rod 12 and the moving column 13 to move upward, driving the driving cylinder 14 and the moving disk 15 to move upward. The helium 18 in the inner cavity of the driving cylinder 14 begins to heat up after being compressed. At this time, the moving disk 15 is driven to move upward, so that the water in the water tank 2 is driven to roll, making the heating speed of the water tank 2 faster and enabling rapid heating after the heating furnace 1 is started;

[0046] By arranging the gas storage tank 4, the flue gas entering the inside of the heating furnace 1 heats the helium 18 filled in the inner cavity of the gas storage tank 4 and expands. Then it pushes the sealing column 6 upward, driving the second spring 11, the connecting rod 12 and the moving column 13 to move upward, so that the driving cylinder 14 and the moving disk 15 are driven to move upward. During the movement of the moving disk 15, the kinetic energy of the water in the inner cavity of the water tank 2 can be greatly increased. Such a design enables the heat of the heat conduction column 3 to be quickly conducted to the water in the inner cavity of the water tank 2 with increased kinetic energy during the start-up period of the system, and the water can be quickly heated and evaporated.

[0047] Among them, the number of the gas storage tanks 4 is four. The four gas storage tanks 4 are respectively movably sleeved with four moving rings 10 through the sealing cylinders 5 and the sealing columns 6. Both the front and rear ends of the outer surface of each moving ring 10 are fixedly connected with the flow dividing plates 17;

[0048] As Figure 3 and 4 shown, when the sealing column 6 moves upward under the push of the helium 18 heated and expanded in the inner cavity of the gas storage tank 4 and drives the driving plate 7, the moving ring 10, the second spring 11, the connecting rod 12, the moving column 13, the driving cylinder 14 and the moving disk 15 to move upward, the water temperature in the inner cavity of the water tank 2 begins to gradually increase, so that the helium 18 in the inner cavity of the driving cylinder 14 begins to be heated and expanded, and at the same time pushes the moving column 13 downward, driving the connecting rod 12 and the moving ring 10 to move downward, so that the second spring 11 is stretched. The moving ring 10 moving downward drives the flow dividing plate 17 to move downward at the same time. The flow dividing plate 17 shunts the flue gas entering the inner cavity of the heating furnace 1 up and down. As the overall temperature of the flue gas decreases from the moment it enters the inner cavity of the heating furnace 1 to the moment it is about to leave, the function of the flow dividing plate 17 is to change the direction of the flue gas when the temperature of the flue gas decreases;

[0049] By providing a driving cylinder 14, when the water in the inner cavity of the water tank 2 is heated, the helium 18 in the inner cavity of the driving cylinder 14 is heated and expanded, thereby pushing the moving column 13 downward, driving the connecting rod 12 and the moving ring 10 downward, and finally driving the flow dividing plate 17 downward. Due to the inclined design of the driving plate 7, the flue gas entering the inner cavity of the heating furnace 1 is shunted up and down, and the flue gas just entering the inner cavity of the heating furnace 1 is mixed with the flue gas about to leave, so that the temperature difference between the upper and lower parts of the flue gas is reduced, and the heat conduction column 3 is heated more evenly.

[0050] Among them, the dust removal mechanism 9 includes a first spring 91. The top end of the first spring 91 is fixedly connected with a first limiting ring 92. The top of the first limiting ring 92 is fixedly installed with a first scraping ring 93. The bottom end of the first spring 91 is fixedly connected with a second limiting ring 94. The top of the second limiting ring 94 is fixedly installed with a second scraping ring 95. The first spring 91, the first limiting ring 92, the first scraping ring 93, the second limiting ring 94 and the second scraping ring 95 are all movably sleeved on the outer surface of the heat conduction column 3.

[0051] After the system is started, the flue gas enters the inner cavity of the heating furnace 1 and continuously heats the gas storage tank 4. Since the helium 18 in the inner cavity of the gas storage tank 4 expands rapidly when heated, it will then push the sealing column 6 and the driving plate 7 upward, driving the connecting column 8 and the dust removal mechanism 9 upward. As Figure 3 and 4 shown, the upward moving connecting column 8 will first drive the second limiting ring 94 and the second scraping ring 95 upward. At this time, the conical structure of the second scraping ring 95 can not only continuously scrape the outer surface of the heat conduction column 3 to remove dust, but also the inclined design can prevent the scraped dust from remaining. As the second limiting ring 94 moves upward, the first spring 91 begins to be gradually compressed, and pushes the first limiting ring 92 and the first scraping ring 93 upward to complete the scraping and dust removal operation on the outer surface of the heat conduction column 3. As the top of the first scraping ring 93 comes into limit contact with the bottom of the inner cavity of the heating furnace 1, the first spring 91 continuously presses the first limiting ring 92 and the first scraping ring 93 under the action of the second limiting ring 94, squeezing the dust on the surfaces of the first limiting ring 92 and the first scraping ring 93 to avoid residue.

[0052] By providing a gas storage tank 4 to obtain part of the heat of the flue gas entering the inner cavity of the heating furnace 1, the helium gas 18 in the inner cavity of the gas storage tank 4 is heated and rapidly expands after being heated, and then pushes the sealing column 6, drives the plate 7 and the connecting column 8 to move upward. By driving the second limiting ring 94 and the second scraping ring 95 upward, on the one hand, the first spring 91 is pressed. At the same time, the upward moving second scraping ring 95 will scrape and remove dust on the outer surface of the heat conducting column 3, and the scraped dust will fall along its inclined outer surface. The compressed first spring 91 begins to push the first limiting ring 92 and the first scraping ring 93 upward and synchronously scrape and remove dust on the outer surface of the heat conducting column 3 through the first scraping ring 93, so that the outer surface of the heat conducting column 3 is dusted once after each start of the system, effectively removing the residues on the outer surface of the heat conducting column 3, which is beneficial to the rapid heating of the heat conducting column 3 and saves energy.

[0053] Among them, the sealing column 6 is hermetically sleeved inside the sealing cylinder 5, and a third spring 19 is movably sleeved on the outer surface of the sealing column 6. The two ends of the third spring 19 are respectively fixedly connected to the sealing cylinder 5 and the sealing column 6;

[0054] As Figure 3 shown, when the helium gas 18 in the inner cavity of the gas storage tank 4 expands due to heat, it will push the sealing column 6 upward. At this time, the third spring 19 is compressed. When the system stops running, the helium gas 18 in the inner cavity of the gas storage tank 4 no longer expands due to heat;

[0055] Driven by the restoring force generated by the compressed third spring 19, the sealing column 6 moves downward and resets, which helps to drive the sealing column 6 to move upward again next time and repeat the operation of driving the dust removal mechanism 9 to remove dust from the heat conducting column 3.

[0056] Among them, the upper and lower outer edges of the moving disk 15 are both processed with arc transitions. A through hole 16 penetrating from the top to the bottom is provided in the top of the moving disk 15. The number of the through holes 16 is nine, and the nine through holes 16 are evenly distributed in a circular pattern with the horizontal center of the moving disk 15 as the reference. The through hole 16 is inclined;

[0057] As Figure 1 、 3 and 4 shown, when the moving disk 15 is driven by the driving cylinder 14 to move upward, it will encounter the resistance of the water in the inner cavity of the water tank 2. When the water passes through the surface of the moving disk 15, it will pass through the through hole 16, and the arc transition of the moving disk 15 can also reduce the resistance;

[0058] While reducing the resistance, the inclined design of the through hole 16 also makes the water have a certain flow trend, further improving the kinetic energy of the water in the inner cavity of the water tank 2 and making the water heat up more quickly.

[0059] Among them, when the top of the first limiting ring 92 contacts the top of the inner cavity of the heating furnace 1, the first spring 91 is in a compressed state;

[0060] As Figure 3 and 4 shown, when the first scraping ring 93 contacts the top of the inner cavity of the heating furnace 1, the second limiting ring 94 and the second scraping ring 95 are still in the upward moving state. At the same time, the degree of compression of the first spring 91 is getting larger and larger, making the force on the first limiting ring 92 larger and larger. The first scraping ring 93 starts to push away the dust accumulated on its top by extrusion, so that the dust is quickly removed.

[0061] Among them, the number of the flow dividing plates 17 is eight. The eight flow dividing plates 17 are divided into four groups with every two as a group. The four groups of flow dividing plates 17 are inclined horizontally to the lower right side, horizontally to the lower left side, horizontally to the lower right side, and horizontally to the lower left side in sequence from left to right;

[0062] As Figure 1 and 3 shown, the flue gas entering the inner cavity of the heating furnace 1 will be divided by the flow dividing plates 17, so that the flue gas is fully mixed during the moving process, greatly avoiding the problem of uneven temperature distribution of the flue gas in the inner cavity of the heating furnace 1.

[0063] Among them, the middle part of the outer surface of the driving cylinder 14 is hermetically sleeved on the inner walls of the heating furnace 1 and the water tank 2. When the moving column 13 moves upward, the helium gas 18 in the inner cavity of the driving cylinder 14 is compressed;

[0064] As Figure 3 and 8 shown, the upward moving moving column 13 will first enter the inner cavity of the driving cylinder 14 and compress the helium gas 18 filled therein. After being compressed, the helium gas 18 will absorb energy and be converted into internal energy. At the same time, the moving column 13 drives the driving cylinder 14 to move upward by compressing the helium gas 18, which not only speeds up the heating speed of the water in the inner cavity of the water tank 2, but also heats the helium gas 18 by compressing the helium gas 18, and finally heats the water in the inner cavity of the water tank 2 for the second time.

[0065] Among them, the number of the second springs 11 is eight. The eight second springs 11 are divided into four groups with every two as a group. Each group of second springs 11 is distributed on the left and right sides of the outer surface of a sealing column 6. The two ends of the second spring 11 are fixedly connected with the driving plate 7 and the moving ring 10 respectively;

[0066] During the upward movement of the sealing column 6, the second spring 11 will be stretched first. After the second spring 11 is stretched to the limit, the return spring force of the second spring 11 drives the connecting rod 12 and the moving column 13 to move upward, and finally drives the driving cylinder 14 and the moving disk 15 to move upward, realizing the rapid heating function after the system is started by tumbling the water tank 2.

[0067] Working principle:

[0068] First of all, asFigure 2 As shown, when the system is turned on, water enters the inner cavity of the water tank 2 along the water inlet, and flue gas enters the inner cavity of the heating furnace 1 along the air inlet. As Figure 3 shown, the flue gas entering the inner cavity of the heating furnace 1 heats the heat conduction column 3 and the gas storage tank 4, causing the heat conduction column 3 to start heating the water in the inner cavity of the water tank 2. At the same time, the helium 18 in the inner cavity of the gas storage tank 4 expands rapidly after being heated, pushing the sealing column 6 upward. The sealing column 6 starts to move upward and stretches the second spring 11. After the second spring 11 is stretched to the limit, it pulls the connecting rod 12 upward, driving the moving column 13 upward, driving the driving cylinder 14 upward, and driving the moving disk 15 upward. During the startup period of the system, the heat of the heat conduction column 3 can be quickly conducted to the water in the inner cavity of the water tank 2 with increased kinetic energy, enabling rapid heating and evaporation of the water;

[0069] Then, the upward moving sealing column 6 drives the driving plate 7 and the connecting column 8 upward, as Figure 3 and 4 shown. The upward moving connecting column 8 will first drive the second limiting ring 94 and the second scraping ring 95 upward. At this time, the conical structure of the second scraping ring 95 can not only continuously scrape the outer surface of the heat conduction column 3 to remove dust, but also the inclined design can prevent the scraped dust from remaining. As the second limiting ring 94 moves upward, the first spring 91 starts to be gradually compressed and pushes the first limiting ring 92 and the first scraping ring 93 upward to complete the scraping and dust removal operation on the outer surface of the heat conduction column 3. As the top of the first scraping ring 93 comes into limiting contact with the bottom of the inner cavity of the heating furnace 1, the first spring 91 continuously presses the first limiting ring 92 and the first scraping ring 93 under the action of the second limiting ring 94, squeezing the dust on the surfaces of the first limiting ring 92 and the first scraping ring 93 to avoid residue. The outer surface of the heat conduction column 3 is dusted once after each startup of the system, effectively removing the residues on the outer surface of the heat conduction column 3, facilitating the rapid heating of the heat conduction column 3 and saving energy;

[0070] Finally, as Figure 3 and 4 shown, after the water in the inner cavity of the water tank 2 is heated, it heats the helium 18 in the inner cavity of the driving cylinder 14 and causes it to expand due to heat, pushing the moving column 13 downward, driving the connecting rod 12 and the moving ring 10 downward, stretching the second spring 11, and driving the flow dividing plate 17 downward. The inclined design of the flow dividing plate 17 causes the flue gas entering the inner cavity of the heating furnace 1 to be divided into upper and lower flows. While the temperature of the flue gas decreases, it merges with the newly entering flue gas in the inner cavity of the heating furnace 1, preventing the temperature difference between the upper and lower parts of the flue gas in the inner cavity of the heating furnace 1 from increasing, making the heating of the heat conduction column 3 more uniform, and thus extending the service life of the heat conduction column 3.

Claims

1. A power generation system utilizing the residual energy of coal gasification, comprising a heating furnace (1), wherein a water tank (2) is fixedly installed at the top of the heating furnace (1), and heat conduction columns (3) are fixedly installed inside the heating furnace (1) and the water tank (2), and it is characterized in that: A gas storage tank (4) is fixedly installed at the bottom of the inner cavity of the heating furnace (1). A sealing cylinder (5) is fixedly installed at the top of the gas storage tank (4). A sealing column (6) and a third spring (19) are movably sleeved inside the sealing cylinder (5). A driving plate (7) is fixedly sleeved on the outer surface of the sealing column (6). A connecting column (8) is fixedly installed at the bottom end of the driving plate (7). A dust removal mechanism (9) is fixedly installed on the outer surface of the connecting column (8). A moving ring (10) is movably sleeved on the outer surface of the sealing column (6) and is located below the driving plate (7). A second spring (11) is fixedly connected between the moving ring (10) and the driving plate (7). A connecting rod (12) is fixedly installed at the top of the moving ring (10). A moving column (13) is fixedly installed at the top of the connecting rod (12). A driving cylinder (14) is sealingly sleeved on the outer surface of the moving column (13). The top of the outer surface of the driving cylinder (14) penetrates upward into the inner cavity of the water tank (2) and is fixedly sleeved with a moving disk (15). Helium (18) is filled in the inner cavities of both the gas storage tank (4) and the driving cylinder (14). The dust removal mechanism (9) includes a first spring (91). The top end of the first spring (91) is fixedly connected to a first limiting ring (92). A first scraping ring (93) is fixedly installed at the top of the first limiting ring (92). The bottom end of the first spring (91) is fixedly connected to a second limiting ring (94). A second scraping ring (95) is fixedly installed at the top of the second limiting ring (94). The first spring (91), the first limiting ring (92), the first scraping ring (93), the second limiting ring (94), and the second scraping ring (95) are all movably sleeved on the outer surface of the heat conducting column (3). The sealing column (6) is sealingly sleeved inside the sealing cylinder (5). A third spring (19) is movably sleeved on the outer surface of the sealing column (6). The two ends of the third spring (19) are respectively fixedly connected to the sealing cylinder (5) and the sealing column (6). The middle part of the outer surface of the driving cylinder (14) is sealingly sleeved on the inner walls of the heating furnace (1) and the water tank (2). When the moving column (13) moves upward, the helium (18) located in the inner cavity of the driving cylinder (14) is compressed.

2. A power generation system using the residual energy of coal gasification according to claim 1, characterized in that: The number of the gas storage tanks (4) is four. Four moving rings (10) are respectively movably sleeved on the four gas storage tanks (4) through the sealing cylinders (5) and the sealing columns (6). The front and rear ends of the outer surface of each moving ring (10) are fixedly connected with a flow dividing plate (17).

3. A power generation system using the residual energy of coal gasification according to claim 1, characterized in that: The upper and lower outer edges of the moving disk (15) are both processed with arc transitions. Through holes (16) penetrating from the top to the bottom are formed in the top of the moving disk (15). The number of the through holes (16) is nine. The nine through holes (16) are evenly distributed in a circumferential manner with the horizontal center of the moving disk (15) as the reference. The through holes (16) are designed to be inclined.

4. A power generation system using the residual energy of coal gasification according to claim 1, characterized in that: When the top of the first limiting ring (92) contacts the top of the inner cavity of the heating furnace (1), the first spring (91) is in a compressed state.

5. A power generation system utilizing the residual energy of coal gasification according to claim 2, characterized in that: The number of the flow dividing plates (17) is eight. The eight flow dividing plates (17) are divided into four groups with every two as a group. The four groups of flow dividing plates (17) are successively inclined obliquely downward to the lower right horizontally, inclined obliquely downward to the lower left horizontally, inclined obliquely downward to the lower right horizontally, and inclined obliquely downward to the lower left horizontally from left to right.

6. A power generation system using the residual energy of coal gasification according to claim 1, characterized in that: The number of the second springs (11) is eight. The eight second springs (11) are divided into four groups with every two as a group. Each group of second springs (11) is distributed on the left and right sides of the outer surface of a sealing column (6). The two ends of the second spring (11) are respectively fixedly connected with a driving plate (7) and a moving ring (10).

Images