Combined heat storage device utilizing solar photo-thermal conversion and boiler waste heat

Abstract

The utility model discloses a combined heat storage device utilizing solar photo-thermal conversion and boiler waste heat. The combined heat storage device comprises a water storage tank, a solar heat collection device, a boiler heat collection device and a heat storage water tank. The water storage tank is divided into two branches, the two branches are connected to the solar heat collection device and the boiler heat collection device respectively, and the solar heat collection device and the boiler heat collection device are connected into the hot water storage tank in parallel. The device is arranged to be an energy storage system combining a solar heat collection device and a boiler heat collection device, the water storage tank is divided into two branches to convey cold water into the two heat collection devices, after heat exchange, the two branches are correspondingly combined and input into the heat storage tank to be stored, photo-thermal combination is achieved, heat sources are effectively increased, and the energy storage efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat storage equipment, in particular to a combined heat storage device utilizing solar thermal conversion and boiler waste heat. Background Art

[0002] In the prior art, most boiler heat storage devices use heat exchange to store the heat energy generated by the boiler in water. For example, the "double-layer heat storage boiler" disclosed in Publication (Announcement) No. CN104964435A and the "heat storage boiler" disclosed in Publication (Announcement) No. CN108106009A all directly store the heat generated by the boiler.

[0003] However, the existing technology of storing energy only through the energy generated by the boiler is too simple. Therefore, there are also structural forms in the existing technology that use solar energy and boilers to store heat; for example: the "solar heat storage boiler" disclosed in Publication (Announcement) No.: CN206496533U; for example: the "Solar Combined Boiler Steam Heat Storage System" disclosed in Publication (Announcement) No.: CN221611348U, etc., are all devices that store heat by combining solar energy and boiler heat.

[0004] However, in the technical solutions combining solar energy with boilers in the existing technology, the heat exchange efficiency is usually low in both the solar panels and the boiler components. In addition, during the heat exchange process of the boiler, the flue gas heat is not fully utilized, and the solar panels cannot effectively form a linked heat exchange, affecting the heat storage efficiency and quality.

[0005] Therefore, in order to solve the above problems, it is necessary to develop a heat storage device that combines solar energy and boiler thermal energy with a reasonable structure and improved heat exchange efficiency and energy storage efficiency. Summary of the Invention

[0006] The purpose of this utility model is to address the deficiencies in the existing technology and provide a combined heat storage device that utilizes solar thermal conversion and boiler waste heat. The technical solution is as follows:

[0007] A combined heat storage device utilizing solar thermal conversion and boiler waste heat comprises a water storage tank, a solar thermal collector, a boiler thermal collector, and a hot water storage tank; the water storage tank is divided into two branches, the two branches being connected to the solar thermal collector and the boiler thermal collector, respectively, which in turn are connected in parallel to the hot water storage tank;

[0008] Water pumps are installed on the two branches of the water storage tank and the parallel branches of the solar thermal collection device and the boiler thermal collection device; and the boiler thermal collection device is also connected to a flue gas treatment device, which is in turn connected to the solar thermal collection device. The flue gas treatment device treats the flue gas generated by the boiler thermal collection device and sends it to the solar thermal collection device for heat exchange, and then discharges it into the atmosphere after heat exchange.

[0009] Furthermore, the solar heat collecting device includes support columns on both sides and a heat collecting frame obliquely installed on the support columns; the lower end of the heat collecting frame is provided with a water inlet trough, the upper end of the heat collecting frame is provided with a water outlet trough, and heat collecting pipes are correspondingly installed between the water inlet trough and the water outlet trough;

[0010] The support columns are correspondingly arranged at the positions of the water inlet trough and the water outlet trough, and a water inlet pipe is installed in the support column corresponding to the water inlet trough position, and the water inlet pipe is correspondingly connected to the water inlet trough; a water outlet pipe is installed in the support column corresponding to the water outlet trough position, and the water outlet pipe is correspondingly connected to the water outlet trough.

[0011] Furthermore, the upper cover of the heat collecting frame is configured as a hinged cover structure, and the lower end surface of the upper cover is provided with a semicircular embedding groove, the position of the embedding groove is corresponding to the position of the heat collecting tube, the upper half of the heat collecting tube is correspondingly embedded in the embedding groove, and a flow gap is correspondingly formed between the lower halves of the heat collecting tubes.

[0012] Furthermore, the upper cover of the heat collecting frame is made of aluminum material that is easy to conduct heat.

[0013] Furthermore, the lower end of the heat collecting frame is provided with a smoke inlet groove correspondingly connected to the flow gap; the upper end of the heat collecting frame is provided with a smoke outlet groove correspondingly connected to the flow gap;

[0014] The flue gas treatment device sends the treated flue gas to the smoke inlet trough through the smoke pipe. The smoke enters the flow gap from the smoke inlet trough and is then discharged into the atmosphere from the smoke pipe connected to the smoke outlet trough.

[0015] Furthermore, the boiler heat collection device includes a boiler, a matching burner assembly is provided at the bottom of the boiler, and the smoke outlet of the boiler transports the smoke to the smoke treatment device through a smoke outlet pipe; and a circle of heat collection cover is also provided on the outer wall of the boiler, and a water inlet pipe is provided at the lower end of the left side of the heat collection cover, and a water outlet pipe is provided at the upper end of the right side.

[0016] Furthermore, the heat collecting cover is provided with several layers of circumferentially arranged water baffles, and each water baffle is provided with a water hole, and the positions of the water holes on the upper and lower adjacent water baffles are different.

[0017] Furthermore, the water baffles are installed at an angle, while adjacent water baffles are installed in parallel.

[0018] Beneficial effects: The utility model has the following beneficial effects:

[0019] 1) This device is set up as an energy storage system that combines a solar thermal collector and a boiler thermal collector. The water storage tank is divided into two branches to transport cold water to the two thermal collectors. After heat exchange, the two branches are then merged and input into the hot water storage tank for storage, realizing the combination of light and heat, effectively increasing the heat source and improving energy storage efficiency.

[0020] 2) The boiler heat collection device in this device can input the heat in the flue gas into the solar heat collection device for utilization, thereby increasing the heat storage efficiency and preventing heat energy waste;

[0021] 3) The solar heat collecting device in this device uses support rods to set water inlet and outlet pipes, which is a reasonable structure. The water flow direction is designed by using water inlet and outlet troughs, and a hinged and openable upper cover is set, which is a reasonable structure.

[0022] 4) The upper cover of this device is not only hinged, but also provided with a semicircular embedded groove. On the one hand, it increases the heat exchange area of ​​the heat collecting tube and improves the heat exchange efficiency; on the other hand, it can form a flow gap to facilitate the introduction of flue gas, and the structure is ingenious.

[0023] 5) The heat collecting frame of this device is also provided with a smoke inlet slot and a smoke outlet slot corresponding to the flow gap. The flue gas is introduced into the solar heat collecting device through the boiler heat collecting device and the flue gas treatment device to realize the waste heat utilization of the flue gas;

[0024] 6) The boiler heat collection device in this device is provided with a heat collection cover and a water baffle inside the heat collection cover. At the same time, staggered water holes are provided on the water baffle. The water will flow in the heat collection cover due to the different positions of the water holes, thereby increasing the heat exchange time and heat exchange distance, thereby increasing the heat exchange efficiency. The overall structure is reasonably set. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is the structural diagram of the utility model;

[0026] Figure 2 This is a structural diagram of the solar heat collecting device in the present utility model;

[0027] Figure 3 for Figure 2 Middle AA section view;

[0028] Figure 4 for Figure 2 Middle BB cross-section;

[0029] Figure 5 This is a structural diagram of the boiler heat collection device in this utility model;

[0030] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0031] Among them, there are a water storage tank 1; a solar thermal collector 2; a support column 201; a thermal collector frame 202; a water inlet trough 203; a water outlet trough 204; a thermal collector pipe 205; a water outlet pipe 206; an upper cover 207; an embedding groove 208; a flow gap 209; a smoke inlet trough 210; a smoke outlet trough 211; a boiler thermal collector 3; a boiler 301; a burner assembly 302; a thermal collector cover 303; a water baffle 304; a water hole 305; a hot water storage tank 4; a water pump 5; and a flue gas treatment device 6. DETAILED DESCRIPTION

[0032] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented based on the technical solutions of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0033] like Figure 1 As shown, a combined heat storage device utilizing solar thermal conversion and boiler waste heat includes a water storage tank 1, a solar thermal collector 2, a boiler thermal collector 3, and a hot water storage tank 4; the water storage tank 1 is divided into two branches, which are respectively connected to the solar thermal collector 2 and the boiler thermal collector 3, and the solar thermal collector 2 and the boiler thermal collector 3 are in turn connected in parallel to the hot water storage tank 4;

[0034] like Figure 2 、 Figure 3 and Figure 4 As shown, water pumps 5 are installed on the two branches of the water storage tank 1 and the parallel branches of the solar thermal collecting device 2 and the boiler thermal collecting device 3; and the boiler thermal collecting device 3 is also connected to a flue gas treatment device 6, which is correspondingly connected to the solar thermal collecting device 2. The flue gas treatment device 6 treats the flue gas generated by the boiler thermal collecting device 3 and sends it to the solar thermal collecting device 2 for heat exchange, and then discharges it into the atmosphere after heat exchange.

[0035] The solar thermal collector 2 includes support columns 201 on both sides and a heat collecting frame 202 obliquely mounted on the support columns 201; a water inlet trough 203 is provided at the lower end of the heat collecting frame 202, and a water outlet trough 204 is provided at the upper end of the heat collecting frame 202. A heat collecting pipe 205 is installed between the water inlet trough 203 and the water outlet trough 204.

[0036] The support column 201 is correspondingly arranged at the positions of the water inlet trough 203 and the water outlet trough 204, and a water inlet pipe 212 is installed in the support column 201 corresponding to the position of the water inlet trough 203, and the water inlet pipe 212 is correspondingly connected to the water inlet trough 203, and a water outlet pipe 206 is installed in the support column 201 corresponding to the position of the water outlet trough 204, and the water outlet pipe 206 is correspondingly connected to the water outlet trough 204.

[0037] The upper cover 207 of the heat collecting frame 202 is configured as a hinged cover structure, and a semicircular embedding groove 208 is provided on the lower end face of the upper cover 207. The position of the embedding groove 208 is corresponding to the position of the heat collecting tube 205. The upper half of the heat collecting tube 205 is correspondingly embedded in the embedding groove 208, and a flow gap 209 is correspondingly formed between the lower halves of the heat collecting tube 205.

[0038] The upper cover 207 of the heat collecting frame 202 is made of aluminum material that is easy to conduct heat.

[0039] The lower end of the heat collecting frame 202 is further provided with a smoke inlet groove 210 correspondingly connected to the flow gap 209; the upper end of the heat collecting frame 202 is provided with a smoke outlet groove 211 correspondingly connected to the flow gap 209;

[0040] The smoke treatment device 6 delivers the treated smoke to the smoke inlet trough 210 through the smoke pipe. The smoke enters the flow gap 209 from the smoke inlet trough 210 and is then discharged into the atmosphere from the smoke pipe connected to the smoke outlet trough 211.

[0041] like Figure 5 and Figure 6 As shown, the boiler heat collection device 3 includes a boiler 301, a matching burner assembly 302 is provided at the bottom of the boiler 301, and the smoke outlet of the boiler 301 transports the smoke to the smoke treatment device 6 through the smoke outlet pipe; and the outer wall of the boiler 301 is also provided with a circle of heat collection cover 303, and the lower end of the left side of the heat collection cover 303 is provided with a water inlet pipe 212, and the upper end of the right side is provided with a water outlet pipe 206.

[0042] Several layers of circumferentially arranged water baffles 304 are also provided in the heat collecting cover 303, and each water baffle 304 is also provided with a water hole 305, and the positions of the water holes 305 on the two adjacent water baffles 304 are different; the water baffles 304 are installed at an angle, while adjacent water baffles 304 are arranged in parallel.

[0043] The overall working process of this device is as follows: First, this device is an energy storage system that combines a solar thermal collection device and a boiler thermal collection device. The water storage tank is divided into two branches to transport cold water to the two thermal collection devices. After heat exchange, the two branches are merged and input into the hot water storage tank for storage, realizing the combination of light and heat, effectively increasing the heat source, and increasing energy storage efficiency.

[0044] And most importantly, the boiler heat collection device can also input the heat in the flue gas into the solar heat collection device for utilization, thereby increasing the heat storage efficiency and preventing heat energy waste.

[0045] The solar thermal collector utilizes solar energy to exchange heat with water. The water enters the water inlet trough from the water inlet pipe of the support column, then flows upward into the heat collecting tube, then into the water storage tank, and finally discharged from the water outlet trough. In this process, sunlight shines on the upper cover of the heat collecting frame. The upper cover is made of aluminum material that is easy to conduct heat. Heat is transferred from the upper cover to the heat collecting tube, heating the cold water inside the heat collecting tube. A semicircular embedding groove is also provided on the upper cover. The upper semicircle of the heat collecting tube is installed in the embedding groove. The design of the embedding groove is to increase the contact area between the heat collecting tube and the upper cover on the one hand; on the other hand, it can leave a gap between the lower semicircle of the heat collecting tube to form a flow gap.

[0046] The flue gas generated by the boiler heat collection device needs to be sent to the flue gas treatment device for environmental protection treatment before it can be discharged into the atmosphere. However, there will still be a lot of heat in the flue gas. In this device, the treated flue gas is sent to the solar heat collection device for utilization.

[0047] There is an overflow gap between the heat collecting tubes in the heat collecting frame. Therefore, a connected smoke inlet trough can be set at the lower end of the heat collecting frame, and a connected smoke outlet trough can be set at the upper end. The flue gas treated by the flue gas treatment device is introduced into the smoke inlet trough. The smoke gas enters the overflow gap from the smoke inlet trough and exchanges heat with the cold water in the heat collecting tube. The smoke gas then enters the smoke outlet trough at the upper end and is discharged to the external atmosphere from the smoke pipe at the lower end of the smoke outlet trough to realize the heat exchange of the flue gas.

[0048] In the above technical solution, the water in the heat collecting tube is exposed to solar heat in the upper part and exchanges heat with the flue gas in the lower part, effectively increasing the heat exchange efficiency; and the upper cover of the heat collecting frame is arranged to be hinged and can be opened. On the one hand, it can protect the internal heat collecting tube, and on the other hand, it is convenient to clean the interior after disassembly, and the structure is reasonably set.

[0049] The boiler heat collecting device in this device includes a boiler and a circle of heat collecting cover arranged on the outside of the boiler. An annular water baffle is arranged in the heat collecting cover, and water holes with staggered positions are arranged on the water baffle. Then, when water enters the heat collecting cover from the lower left end, the water will flow in the heat collecting cover due to the different positions of the water holes, thereby increasing the heat exchange time and heat exchange distance, thereby increasing the heat exchange efficiency, and the overall structure is reasonably set.

[0050] The above specific implementation method is only a preferred embodiment of the present invention and is not intended to limit the implementation and scope of the claims of the present invention. All equivalent changes and modifications made based on the content of the patent protection scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A combined heat storage device utilizing solar thermal conversion and boiler waste heat, characterized by: The invention comprises a water storage tank (1), a solar heat collecting device (2), a boiler heat collecting device (3) and a hot water storage tank (4); the water storage tank (1) is divided into two branches, the two branches are respectively connected to the solar heat collecting device (2) and the boiler heat collecting device (3), and the solar heat collecting device (2) and the boiler heat collecting device (3) are connected in parallel to the hot water storage tank (4); Water pumps (5) are correspondingly installed on the two branches of the water storage tank (1) and the parallel branches of the solar heat collecting device (2) and the boiler heat collecting device (3); and the boiler heat collecting device (3) is also connected to a flue gas treatment device (6), which is in turn correspondingly connected to the solar heat collecting device (2). The flue gas treatment device (6) treats the flue gas generated by the boiler heat collecting device (3) and sends it to the solar heat collecting device (2) for heat exchange, and then discharges it into the atmosphere after heat exchange.

2. The combined heat storage device utilizing solar thermal conversion and boiler waste heat according to claim 1 is characterized in that: The solar heat collecting device (2) comprises support columns (201) on both sides and a heat collecting frame (202) obliquely mounted on the support columns (201); a water inlet trough (203) is provided at the lower end of the heat collecting frame (202), a water outlet trough (204) is provided at the upper end of the heat collecting frame (202), and a heat collecting pipe (205) is correspondingly mounted between the water inlet trough (203) and the water outlet trough (204); The support column (201) is correspondingly arranged at the positions of the water inlet trough (203) and the water outlet trough (204), and a water inlet pipe (212) is installed in the support column (201) corresponding to the position of the water inlet trough (203), and the water inlet pipe (212) is correspondingly communicated with the water inlet trough (203), and a water outlet pipe (206) is installed in the support column (201) corresponding to the position of the water outlet trough (204), and the water outlet pipe (206) is correspondingly communicated with the water outlet trough (204).

3. The combined heat storage device utilizing solar thermal conversion and boiler waste heat according to claim 2 is characterized in that: The upper cover (207) of the heat collecting frame (202) is configured as a hinged cover structure, and a semicircular embedding groove (208) is provided on the lower end surface of the upper cover (207). The position of the embedding groove (208) corresponds to the position of the heat collecting tube (205). The upper half of the heat collecting tube (205) is correspondingly embedded in the embedding groove (208), and a flow gap (209) is correspondingly formed between the lower half of the heat collecting tube (205).

4. The combined heat storage device utilizing solar thermal conversion and boiler waste heat according to claim 3 is characterized in that: The upper cover (207) of the heat collecting frame (202) is made of aluminum material that is easy to conduct heat.

5. The combined heat storage device utilizing solar thermal conversion and boiler waste heat according to claim 3 is characterized in that: The lower end of the heat collecting frame (202) is further provided with a smoke inlet groove (210) correspondingly connected to the flow gap (209); the upper end of the heat collecting frame (202) is provided with a smoke outlet groove (211) correspondingly connected to the flow gap (209); The smoke treatment device (6) delivers the treated smoke to the smoke inlet trough (210) through the smoke duct. The smoke enters the flow gap (209) from the smoke inlet trough (210) and is then discharged into the atmosphere through the smoke duct connected to the smoke outlet trough (211).

6. The combined heat storage device utilizing solar thermal conversion and boiler waste heat according to claim 1 is characterized in that: The boiler heat collection device (3) comprises a boiler (301), a matching burner assembly (302) is provided at the bottom of the boiler (301), and a smoke outlet of the boiler (301) transports smoke to a smoke treatment device (6) through a smoke outlet pipe; and a heat collection cover (303) is also provided on the outer wall of the boiler (301), a water inlet pipe (212) is provided at the lower left end of the heat collection cover (303), and a water outlet pipe (206) is provided at the upper right end.

7. The combined heat storage device utilizing solar thermal conversion and boiler waste heat according to claim 6, characterized in that: The heat collecting cover (303) is further provided with a plurality of circumferentially arranged water baffles (304), and each water baffle (304) is further provided with a water hole (305), and the positions of the water holes (305) on two upper and lower adjacent water baffles (304) are different.

8. The combined heat storage device utilizing solar thermal conversion and boiler waste heat according to claim 7 is characterized in that: The water baffles (304) are installed in an inclined manner, while adjacent water baffles (304) are arranged in parallel.

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