A steam heat storage device with waste heat recovery structure

Abstract

The present invention discloses a steam heat storage device with a waste heat recovery structure, comprising: a stable support frame, and a steam heat storage tank connected to the stable support frame, and further comprising: a first connecting cover and a second connecting cover are correspondingly provided at the upper and lower ends of the outer ends of the steam heat storage tank, and the inner ends of the first connecting cover and the second connecting cover are fixedly provided with a flange plate, and the flange plate is connected through with mounting flange bolts, the top end of the first connecting cover is respectively connected with a second inlet pipe opening and a second inlet and outlet pipe opening, and the bottom end of the second inlet pipe opening is connected to the first connecting pipe, and the first connecting pipe and the second connecting pipe are arranged in a wave shape with equal spacing. The steam heat storage device with a waste heat recovery structure improves the heat transfer efficiency through the sleeve-type heat accumulator, and under the setting of the adjustment component, the excess heat energy recovery device can be separately collected and disassembled, and the heat storage pipe connection is stably connected to reduce leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of steam heat storage devices, and in particular to a steam heat storage device with a waste heat recovery structure. Background Art

[0002] A steam thermal storage device is a device that stores and regulates steam energy. It is primarily used to balance fluctuations in steam loads and ensure the stability and economy of the heating system. Steam thermal storage technology can effectively balance supply and demand and promote the substitution of electricity in related industries. However, due to manufacturing process constraints, the overall performance of steam thermal storage tanks has not yet been perfected. For example:

[0003] Announcement No. CN217763377U provides a boiler steam heat storage device, which includes a heat storage body connected to the heat source output end of the steam boiler and a controller. A heat exchanger for controlling the heat source transmission is provided between the heat storage body and the steam boiler. A water inlet is provided at the top of the heat storage body, and a water outlet is provided at the bottom of the heat storage body. The heat storage body is also provided with a heat storage mechanism. The heat storage mechanism includes an insulating layer provided in the heat storage body, a high specific heat capacity heat conductive ring provided in the heat storage body, and a high specific heat capacity heat conductive sheet inserted on the high specific heat capacity heat conductive ring. A temperature sensor is also provided inside the heat storage body. The temperature sensor and the heat exchanger are both electrically connected to the controller, which solves the problem that when traditional steam heat storage devices adjust the steam load, the heating temperature of the heat storage device is easily unstable due to the small heat capacity of the heat storage device.

[0004] Another example is a low-pressure-loss steam heat storage device provided by announcement number CN211823933U, which includes a steam heat storage tank body, a steel plate provided on the outer shell of the steam heat storage tank body, a steam inlet and a steam outlet provided above the steam heat storage tank body, and the steam inlet is connected to a steam distribution pipe in the steam heat storage tank body, the steam distribution pipe is provided with a first nozzle, the bottom outlet of the steam heat storage tank body is connected to the inlet of a disturbance pump, and the disturbance pump outlet is connected to a liquid distribution pipe in the steam heat storage tank body through a control valve, and the liquid distribution pipe is provided with a second nozzle. The present invention has the advantages of low pressure loss, high heat storage efficiency, good thermal insulation performance, low operating cost, and simple operating procedures, and is suitable for many fields such as petroleum, chemical industry, food processing, thermal power generation and heating.

[0005] The existing technical solutions have the following defects, for example: the heat accumulator installed inside the existing steam thermal storage device has a low energy storage density and low heat charging efficiency. At the same time, the later maintenance, cleaning and disassembly of the heat accumulator after installation are relatively troublesome, and the disassembly site is also prone to leakage. We propose a steam thermal storage device with a waste heat recovery structure to solve the above problems. Summary of the Invention

[0006] The present invention aims to provide a steam heat storage device with a waste heat recovery structure to solve the problems proposed in the above background technology that the heat accumulator installed inside the existing steam heat storage device has a low energy storage density and low heat charging efficiency. At the same time, the heat accumulator is difficult to inspect, clean and disassemble after installation, and the disassembly site is prone to leakage.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a steam thermal storage device with a waste heat recovery structure, comprising: a stable support frame, and a steam thermal storage tank connected to the stable support frame, and further comprising:

[0008] A first connecting cover and a second connecting cover are respectively provided at the upper and lower ends of the outer end of the steam thermal storage tank, and the inner ends of the first connecting cover and the second connecting cover are fixed to the flange plate, and the flange plate is connected to the mounting flange bolts through, the top end of the first connecting cover is respectively connected to the second inlet pipe opening and the second inlet and outlet pipe opening, and the bottom end of the second inlet pipe opening is connected to the first connecting pipe, and the first connecting pipe and the second connecting pipe are arranged in a wave shape with equal intervals;

[0009] The connected first connecting pipes are connected to the third connecting pipe, the upper side of the first connecting cover is provided with a first inlet pipe port, the lower side of the steam thermal storage tank is connected to a first inlet and outlet pipe port, the middle part of the steam thermal storage tank is connected to a mounting tank cover, and the outer end of the mounting tank cover is fixed with a waste heat recovery tank, and the outer end of the waste heat recovery tank is connected to the steam thermal storage tank through a detachable adjustment component;

[0010] The interior of the waste heat recovery tank is connected to a heat collection pipe, and the heat collection pipe is connected to the first connecting pipe through a sealing component.

[0011] As a preferred technical solution of the present invention, the connecting plate at the bottom of the first connecting pipe is attached to the inner wall of the steam heat storage tank, and the interior of the connecting plate is evenly provided with through-hole structures.

[0012] As a preferred technical solution of the present invention, the first inlet pipe port is connected to the first connecting pipe, and the bottom end of the first connecting pipe is connected to the first inlet and outlet pipe port, and a composite phase change material is arranged on the outside of the first connecting pipe, and the composite phase change material includes expanded graphite and foam metal to achieve a heat storage effect.

[0013] As a preferred technical solution of the present invention, the waste heat recovery tank and the steam heat storage tank are vertically engaged, the outer surface of the waste heat recovery tank is provided with a threaded structure, and the inner wall of the waste heat recovery tank is provided with an inner insulation board.

[0014] As a preferred technical solution of the present invention, the adjustment component includes a connecting sleeve installed on the outer surface of the waste heat recovery tank, and a first connecting block is welded and fixed to the outer end of the connecting sleeve, and an adjustment rod is obliquely arranged on the outer end of the first connecting block, and a second connecting block is rotatably arranged on the outer end of the adjusting rod, and a connecting rod is connected to the interior of the second connecting block.

[0015] As a preferred technical solution of the present invention, the adjusting rod is connected to the first connecting block in a rotational manner, and the connecting sleeve is nested outside the thread on the surface of the waste heat recovery tank.

[0016] As a preferred technical solution of the present invention, the connecting rod is connected to the second connecting block by means of threads, and the sliding arrangement of the second connecting block and the steam heat storage tank plays a role in stabilizing the movement of the waste heat recovery tank.

[0017] As a preferred technical solution of the present invention, the heat collection tube is fixed to the installation tank cover by welding through a reinforcement plate;

[0018] The sealing assembly includes a connecting block arranged at the outer end of the heat collection tube, and the outer side of the connecting block is connected to a spacer tube connected to the first connecting tube, the outer end of the spacer tube is provided with a spacer sleeve corresponding to the heat collection tube, and a positioning groove is opened inside the spacer sleeve.

[0019] As a preferred technical solution of the present invention, the connecting block is arranged at an equal angle at the outer end of the heat collection tube, and the connecting block and the spacer sleeve form a sealed clamping structure.

[0020] As an optimal technical solution of the present invention, the heat energy collection pipe is U-shaped and connected to the first delivery pipe at its top, and the top of the first delivery pipe is connected to the second delivery pipe, and the top of the second delivery pipe is connected to an installed air pump.

[0021] Compared with the prior art, the present invention has the following advantages: the steam heat storage device with waste heat recovery structure improves the heat transfer efficiency through the sleeve-type heat accumulator and, under the setting of the adjustment component, can collect and disassemble the waste heat recovery device separately, stably connect the heat storage pipe connection, and reduce leakage;

[0022] By installing the heat collection pipe into the interior of the waste heat recovery tank, and then nesting the reinforcement plate inside the heat collection pipe, and installing it through the reinforcement plate and the installation tank cover, when the waste heat recovery tank is vertically connected to the steam heat storage tank, the first connecting pipe connected to the interior of the waste heat recovery tank is connected to the heat collection pipe through the spacer pipe. At the same time, an inner insulation plate is provided inside the waste heat recovery tank, and heat is stored in the waste heat recovery tank through the inner insulation plate, and heat is exchanged inside the first connecting pipe. Heat exchange is carried out through cold and heat exchange, and the heat transfer fluid passes through the inside of the first connecting pipe for heat exchange, and the cold fluid flows in sequence through the third connecting pipe, and is finally discharged from the second inlet and outlet pipes. A composite phase change material is provided on the outside of the first connecting pipe. The composite phase change material includes expanded graphite and foam metal. It has the advantages of large latent heat and high energy storage density in heat exchange and energy storage. The phase change material can effectively improve the thermal conductivity of the material, thereby reducing liquid leakage.

[0023] The connecting block is arranged at an equal angle at the outer end of the heat collection tube, and the connecting block and the spacer sleeve form a sealed clamping structure. The heat collection tube is clamped to the inside of the spacer tube. The connecting block is arranged at an equal angle at the outer end of the heat collection tube. At the same time, a spacer sleeve is provided inside the spacer tube, and a groove structure that matches the connecting block is opened inside the spacer sleeve. After the waste heat is recovered, the heat collection tube is clamped to the inside of the spacer sleeve, and the connection is connected to the inside through the clamping of the connecting block and the positioning groove. The connection can be stably connected. The connection of the sleeve-type heat accumulator usually leaks. This setting can stably connect the connection, reduce the occurrence of leakage, and facilitate later disassembly.

[0024] When the waste heat recovery tank is vertically connected to the steam heat storage tank, the first connecting pipe connected to the inside of the waste heat recovery tank is connected to the heat energy collection pipe through the spacer pipe. At the same time, an internal insulation plate is provided inside the waste heat recovery tank, and heat is stored in the waste heat recovery tank through the internal insulation plate. The connecting rod is connected to the second connecting block in a threaded manner, and the second connecting block and the steam heat storage tank are slidingly arranged to stabilize the movement of the waste heat recovery tank. After the waste heat recovery tank is separated from the first connecting pipe, the waste heat recovery tank is separated from the connecting sleeve by rotating the waste heat recovery tank, and the waste heat recovery tank can be separately pulled out and replaced, and the inside of the waste heat recovery tank can be cleaned and repaired, which increases the utilization efficiency. The waste heat recovery tank is separately pulled out, and the horizontal displacement can stably separate the heat collection pipe and the spacer sleeve, protecting the disassembly state of the connection, reducing the wear on the connection during disassembly, and increasing the service life of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2This is a schematic diagram of the overall cross-sectional structure of the connection between the adapter sleeve and the steam thermal storage tank of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall cross-sectional structure of the connection between the steam thermal storage tank and the first connecting pipe of the present invention;

[0028] Figure 4 For the present invention Figure 2 Middle A is a schematic diagram of the enlarged structure;

[0029] Figure 5 This is a schematic diagram of the overall cross-sectional structure of the tank cover and the spacer tube connection of the present invention;

[0030] Figure 6 This is a schematic diagram of the overall cross-sectional structure of the connection between the heat collection tube and the reinforcement plate of the present invention;

[0031] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0032] Figure 8 This is a schematic diagram of the overall explosion structure of the waste heat recovery tank and the spacer pipe connected in the present invention.

[0033] In the figure: 1. Stable support frame; 2. Steam heat storage tank; 3. Mounting flange bolts; 4. First connecting cover; 5. Flange plate; 6. Pressure gauge; 7. Connecting plate; 8. First connecting pipe; 9. Second connecting pipe; 10. Third connecting pipe; 11. First inlet pipe port; 12. First inlet and outlet pipe port; 13. Second inlet pipe port; 14. Second inlet and outlet pipe port; 15. Second connecting cover; 16. Install tank cover; 17. Waste heat recovery tank; 18. Spacer pipe; 19. Heat energy collection pipe; 20. Reinforcement plate; 21. First connecting block; 22. Adjusting rod; 23. Second connecting block; 24. Connecting rod; 25. Inner insulation board; 26. Connecting sleeve; 27. Connecting block; 28. Positioning groove; 29. ​​Spacer sleeve; 30. First delivery pipe; 31. Second delivery pipe; 32. Install air pump. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] See also Figure 1-8 The present invention provides a technical solution: a steam heat storage device with a waste heat recovery structure. When using the steam heat storage device with a waste heat recovery structure, first of all, specifically as follows Figure 1 and Figure 3 In the embodiment, a steam heat storage tank 2 is installed on the upper end of the stable support frame 1, and the steam heat storage tank 2 is installed on the stable support frame 1, thereby supporting the steam heat storage tank 2. At the same time, a first connecting cover 4 and a second connecting cover 15 are correspondingly provided on the upper and lower ends of the outer ends of the steam heat storage tank 2, and the inner ends of the first connecting cover 4 and the second connecting cover 15 are fixed to the flange plate 5, and the flange plate 5 is connected with the mounting flange bolt 3 through the flange plate 5. By passing the mounting flange bolt 3 through the interior of the flange plate 5, the mounting flange bolt 3 is connected to the flange plate 5 under the rotation of the mounting flange bolt 3, thereby fixing the first connecting cover 4 and the second connecting cover 15 to the steam heat storage tank 2. The first and second connecting pipes 15 are connected. When disassembly is required, the mounting flange bolts 3 are rotated in the opposite direction to separate the first connecting cover 4 and the second connecting cover 15 from the steam heat storage tank 2, which can be replaced better. At the same time, the top of the steam heat storage tank 2 can be opened to observe and repair the interior. The top of the first connecting cover 4 is respectively connected to the second inlet pipe port 13 and the second inlet and outlet pipe port 14, and the bottom end of the second inlet pipe port 13 is connected to the first connecting pipe 8, and the first connecting pipe 8 and the second connecting pipe 9 are arranged in a wavy shape with equal intervals. The upper side of the first connecting cover 4 is provided with a first inlet pipe port 11, and the first inlet pipe port 11 is connected to the first connecting pipe 8. By entering the interior of the first inlet pipe port 11, the steam enters the interior of the first connecting pipe 8. Since the first connecting pipe 8 is connected to the third connecting pipe 10, the first connecting pipe 8 and the second connecting pipe 9 are arranged in a wavy shape with equal intervals. Heat flows inside the second connecting pipe 9, and at the same time, the cold fluid passes through the second inlet pipe port 13 and enters the third connecting pipe 10, and heat exchange is carried out through cold and heat exchange. The heat transfer fluid passes through the inside of the first connecting pipe 8 for heat exchange, and the cold fluid flows in sequence through the third connecting pipe 10, and is finally discharged from the second inlet and outlet pipe port 14. The lower side of the steam heat storage tank 2 is connected to the first inlet and outlet pipe port 12, and the hot steam is discharged from the first inlet and outlet pipe port 12, and the bottom end of the first connecting pipe 8 is connected to the first inlet and outlet pipe port 12. Since a composite phase change material is arranged on the outside of the first connecting pipe 8, the composite phase change material includes expanded graphite and foam metal. It has the advantages of large latent heat and high energy storage density during heat exchange and energy storage. The phase change material can effectively improve the thermal conductivity of the material, thereby reducing liquid leakage. At the same time, the first connecting pipe 8, the second connecting pipe 9 and the third connecting pipe 10 constitute a sleeve-type heat accumulator with a large heat exchange area, which improves the heat transfer efficiency.

[0036] Specific examples Figure 5 、 Figure 6 and Figure 7In the embodiment, since the middle of the steam heat storage tank 2 is connected with a mounting tank cover 16, when heat exchange is carried out inside the first connecting pipe 8 and the second connecting pipe 9, the pressure inside the steam heat storage tank 2 is observed by setting the pressure gauge 6, and the outer end of the mounting tank cover 16 is fixed with a waste heat recovery tank 17, and the outer end of the waste heat recovery tank 17 is connected to the steam heat storage tank 2 through a detachable adjustment component. When the heat pressure inside the first connecting pipe 8 is too high, since the waste heat recovery tank 17 and the steam heat storage tank 2 are vertically engaged, the heat collection pipe 19 is welded and fixed to the mounting tank cover 16 through the reinforcing plate 20. By installing the heat collection pipe 19 into the waste heat recovery tank 17, the heat collection pipe 19 is heated and cooled. The heat recovery tank 17 is vertically connected to the steam heat storage tank 2, and the first connecting pipe 8 connected to the inside of the waste heat recovery tank 17 is connected to the heat collection pipe 19 through the spacer pipe 18. At the same time, the interior of the waste heat recovery tank 17 is provided with an inner insulation plate 25, and the waste heat recovery tank 17 is stored with heat through the inner insulation plate 25. Heat is exchanged inside the first connecting pipe 8. At the same time, the connecting plate 7 at the bottom of the first connecting pipe 8 is attached to the inner wall of the steam heat storage tank 2, and the interior of the connecting plate 7 is evenly provided with a through-hole structure. When the first The internal heat energy of the connecting pipe 8 is excessive, and the excess heat energy is transferred to the interior of the heat collection pipe 19 through the spacer pipe 18 for excess heat storage, thereby achieving the effect of waste heat recovery. The interior of the waste heat recovery tank 17 is connected to the heat collection pipe 19, and the heat collection pipe 19 is connected to the first connecting pipe 8 through a sealing component. The sealing component includes a connecting block 27 arranged at the outer end of the heat collection pipe 19, and the outer side of the connecting block 27 is connected to the spacer pipe 18 connected to the first connecting pipe 8. The outer end of the spacer pipe 18 is provided with a spacer sleeve 29 corresponding to the heat collection pipe 19, and a positioning groove 28 is provided inside the spacer sleeve 29. In the process of waste heat recovery, By engaging the heat collection tube 19 into the interior of the spacer tube 18, the connecting block 27 is arranged at equal angles at the outer end of the heat collection tube 19. At the same time, a spacer sleeve 29 is provided inside the spacer tube 18, and a groove structure that matches the connecting block 27 is opened inside the spacer sleeve 29. After the waste heat is recovered, by engaging the heat collection tube 19 into the interior of the spacer sleeve 29, the connection is connected to the inside through the engagement of the connecting block 27 and the positioning groove 28, which can stably connect the connection. The connection of the sleeve-type heat accumulator usually leaks. This setting can stably connect the connection, reduce the occurrence of leakage, and facilitate later disassembly.

[0037] Specific examples Figure 2 、 Figure 4 and Figure 8In the embodiment, since the waste heat recovery tank 17 is vertically connected to the inside of the steam heat storage tank 2, the outer surface of the waste heat recovery tank 17 is provided with a threaded structure, and the waste heat recovery tank 17 is connected to the steam heat storage tank 2 through an adjusting component. The adjusting component includes a connecting sleeve 26 installed on the outer surface of the waste heat recovery tank 17, and the outer end of the connecting sleeve 26 is welded and fixed with a first connecting block 21, and the outer end of the first connecting block 21 is tilted and provided with an adjusting rod 22, the outer end of the adjusting rod 22 is rotatably provided with a second connecting block 23, and the interior of the second connecting block 23 is penetrated and connected with a connecting rod 24, the adjusting rod 22 is connected to the first connecting block 21 in a rotating manner, and the connecting sleeve 26 is embedded in the outer end of the first connecting block 21. The threaded part of the waste heat recovery tank 17 is sleeved on the surface of the waste heat recovery tank 17. By nesting the connecting sleeve 26 on the outer surface of the waste heat recovery tank 17, the connecting sleeve 26 is engaged with the internal groove of the steam heat storage tank 2, and the waste heat recovery tank 17 is installed through the adjustment component. The connecting rod 24 is connected to the second connecting block 23 in a threaded manner. By rotating the connecting rod 24, the connecting rod 24 drives the second connecting block 23 to slide inside the steam heat storage tank 2. At the same time, the adjusting rod 22 is tilted. Under the sliding of the second connecting block 23, the adjusting rod 22 rotates inside the first connecting block 21 and the second connecting block 23. At this time, the connecting sleeve 26 drives the waste heat recovery tank 17 At the same time, it slides inside the steam heat storage tank 2, thereby horizontally separating the heat collection pipe 19 inside the waste heat recovery tank 17 from the spacer pipe 18 outside the first connecting pipe 8, and the waste heat recovery tank 17 is pulled out separately. At the same time, the horizontal displacement can stably separate the heat collection pipe 19 from the spacer sleeve 29, protect the disassembly state of the connection, reduce the wear on the connection during disassembly, and increase the service life of the parts. After the waste heat recovery tank 17 is separated from the first connecting pipe 8, the waste heat recovery tank 17 is separated from the connecting sleeve 26 by rotating the waste heat recovery tank 17, and the waste heat recovery tank 17 can be separately pulled out. The interior of the waste heat recovery tank 17 can be cleaned and repaired, which increases the utilization efficiency. The heat energy collection pipe 19 is connected to the first delivery pipe 30 on its top in a "U" shape, and the top of the first delivery pipe 30 is connected to the second delivery pipe 31, and the top of the second delivery pipe 31 is connected to the installed air pump 32. At the same time, after the waste heat extracted from the inside of the first connecting pipe 8 enters the heat energy collection pipe 19, the installed air pump 32 is started to make the heat energy collection pipe 19 enter the first connecting pipe 8 again through the second delivery pipe 31, and the waste heat is circulated and exchanged, saving resources. This is the method of using the steam heat storage device with a waste heat recovery structure.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steam heat storage device with a waste heat recovery structure, comprising: A stable support frame (1), and a steam heat storage tank (2) connected to the stable support frame (1), characterized in that it also includes: The outer end of the steam heat storage tank (2) is provided with a first connecting cover (4) and a second connecting cover (15) correspondingly at the upper and lower ends, and the inner ends of the first connecting cover (4) and the second connecting cover (15) are fixed to the flange plate (5), and the flange plate (5) is connected to the mounting flange bolt (3) through, the top end of the first connecting cover (4) is connected to the second inlet pipe port (13) and the second inlet and outlet pipe port (14), respectively, and the bottom end of the second inlet pipe port (13) is connected to the first connecting pipe (8), and the first connecting pipe (8) and the second connecting pipe (9) are arranged in a wave shape with equal intervals; The first connecting pipes (8) are connected to each other and are connected to the third connecting pipe (10). The upper side of the first connecting cover (4) is provided with a first inlet pipe opening (11). The lower side of the steam heat storage tank (2) is connected with a first inlet and outlet pipe opening (12). The middle part of the steam heat storage tank (2) is connected with a mounting tank cover (16), and the outer end of the mounting tank cover (16) is fixed with a waste heat recovery tank (17). The outer end of the waste heat recovery tank (17) is connected to the steam heat storage tank (2) via a detachable adjustment component. The interior of the waste heat recovery tank (17) is connected to a heat collection pipe (19), and the heat collection pipe (19) is connected to the first connecting pipe (8) via a sealing component; The waste heat recovery tank (17) and the steam heat storage tank (2) are arranged in a vertically engaged manner, and the outer surface of the waste heat recovery tank (17) is provided with a threaded structure, and the inner wall of the waste heat recovery tank (17) is provided with an inner insulation plate (25), the adjustment component includes a connecting sleeve (26) installed on the outer surface of the waste heat recovery tank (17), and the outer end of the connecting sleeve (26) is welded and fixed with a first connecting block (21), and the outer end of the first connecting block (21) is tiltedly provided with an adjusting rod (22), the outer end of the adjusting rod (22) is rotatably provided with a second connecting block (23), and the interior of the second connecting block (23) is penetrated and connected with a connecting rod (24), the adjusting rod (22) and the first connecting block (21) are connected in a rotating manner, and the connecting sleeve (26) is nested outside the thread on the surface of the waste heat recovery tank (17), and the heat collection pipe (19) is welded and fixed to the installation tank cover (16) through the reinforcing plate (20); The sealing assembly comprises a connecting block (27) arranged at the outer end of the heat collection tube (19), and the outer side of the connecting block (27) is connected to a spacer tube (18) arranged in communication with the first connecting tube (8), and the outer end of the spacer tube (18) is provided with a spacer sleeve (29) corresponding to the heat collection tube (19), and a positioning groove (28) is provided inside the spacer sleeve (29).

2. The steam thermal storage device with a waste heat recovery structure according to claim 1, characterized in that: The connecting plate (7) at the bottom of the first connecting pipe (8) is attached to the inner wall of the steam heat storage tank (2), and a through-hole structure is evenly provided inside the connecting plate (7).

3. The steam thermal storage device with a waste heat recovery structure according to claim 1, characterized in that: The first inlet pipe opening (11) is connected to the first connecting pipe (8), and the bottom end of the first connecting pipe (8) is connected to the first inlet and outlet pipe opening (12), and a composite phase change material is provided on the outside of the first connecting pipe (8), the composite phase change material comprising expanded graphite and foam metal to achieve a heat storage effect.

4. The steam thermal storage device with a waste heat recovery structure according to claim 1, characterized in that: The connecting rod (24) is connected to the second connecting block (23) in a threaded manner, and the sliding arrangement of the second connecting block (23) and the steam heat storage tank (2) plays a role in stabilizing the movement of the waste heat recovery tank (17).

5. The steam thermal storage device with a waste heat recovery structure according to claim 1, characterized in that: The connecting block (27) is arranged at an equal angle on the outer end of the heat collection tube (19), and the connecting block (27) and the spacer sleeve (29) form a sealed clamping structure.

6. The steam thermal storage device with a waste heat recovery structure according to claim 1, characterized in that: The heat energy collection pipe (19) is in a "U" shape and is connected to the first delivery pipe (30) at its top, and the top end of the first delivery pipe (30) is connected to the second delivery pipe (31), and the top end of the second delivery pipe (31) is connected to an air pump (32).

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