Fused salt power generation and heat supply device based on solar heating

Abstract

The invention discloses a fused salt power generation and heat supply device based on solar heating. The fused salt power generation and heat supply device comprises a heat supply adjusting unit, a fused salt containing device used for heating water and a switch assembly arranged at the inflow end of the fused salt containing device and used for controlling the heating state of the fused salt containing device. The power generation unit comprises a thermal power assembly arranged at the inflow end of the switch assembly and used for supplying power to the fused salt containing device for heating, and a solar power generation assembly arranged at the inflow end of the switch assembly, located on one side of the thermal power assembly and used for assisting the thermal power assembly in heating the fused salt containing device. When electricity generated by the thermal power assembly is not enough to meet user requirements, the switch assembly is controlled to open the thermal power assembly and the solar power generation assembly at the same time, so that when the thermal power assembly converts electric energy into heat energy, originally stored solar energy is also converted into heat energy to be used by a user, and therefore flexible participation in peak regulation service is achieved; and the energy-saving and environment-friendly effects are achieved.

Description

Technical Field

[0001] This invention relates to the field of power generation and heating technology, specifically to a molten salt power generation and heating device based on solar heating. Background Technology

[0002] For power plants with extraction condensing units, the large amount of steam extracted for heating results in insufficient grid capacity during low-load periods, making it impossible to participate in peak-shaving ancillary services. During high-load periods, they cannot operate at full capacity. If electrothermal energy storage facilities are added, power plants that output both electrical and thermal loads can convert excess electricity into thermal energy during off-peak periods and store it for participation in deep grid peak shaving. During peak heating periods, the thermal energy can be released to supplement industrial steam supply or heating network capacity, thus effectively increasing the grid-connected electricity from solar and wind power. Energy storage facilities essentially build a flexible energy "conversion" bridge between the grid and the heating network. Through reasonable equipment configuration and optimized operation, the grid-connected electricity from clean energy can be increased. Therefore, energy storage facilities are an effective means to solve the current "dilemma." By installing large-capacity energy storage devices on the cogeneration unit side and switching them in real time according to grid dispatch peak shaving instructions, the power that the plant cannot connect to the grid during off-peak periods can be consumed or abandoned wind power can be converted into thermal energy for storage and then utilized as needed, thus achieving deep peak shaving.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a solar-heated molten salt power generation and heating device to solve the problems mentioned in the background art, such as the lack of corresponding electric thermal energy storage facilities for existing power plant condensing units, which cannot flexibly participate in peak shaving services. In addition, the existing power plant condensing units have a single energy supply mode, which is not conducive to energy conservation and environmental protection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A solar-heated molten salt power generation and heating device includes: A heating regulation unit for heating water in a molten salt container, and a switching component located at the inflow end of the molten salt container for controlling the heating status of the molten salt container. The power generation unit includes a thermal power unit located at the inflow end of the switch assembly for supplying power to heat the molten salt container, and a solar power unit located at the inflow end of the switch assembly and on one side of the thermal power unit for assisting the thermal power unit in heating the molten salt container.

[0006] Furthermore, the thermal power assembly includes: Steam turbine generator set; The first power transmission pipe is connected at one end to the steam turbine generator set and at the other end to the switch assembly, and is used to supply the electricity generated by the steam turbine generator set to the molten salt container through the switch assembly.

[0007] Furthermore, the solar power generation module includes: A solar cell is used to collect energy generated by the sun. The second molten salt electric heating device is connected to one end of the solar cell and is used to store and utilize the energy collected by the solar cell. The second power transmission pipe is connected at one end to the second molten salt electric heating device and at the other end to the switch assembly, and is used to assist the first power transmission pipe in supplying power to the molten salt container device.

[0008] Furthermore, the heating regulation unit also includes: A water supply pipeline is connected to the lower part of the molten salt container to supply water to the molten salt container. A water supply system, connected to the inflow end of the water supply pipeline, is used to deoxygenate the water supplied by the water supply pipeline; A steam supply pipeline is connected to the side of the molten salt container to discharge water vapor from the molten salt container. A heat user is connected to the outlet end of the steam supply pipeline to exchange heat with the water vapor output from the steam supply pipeline.

[0009] Furthermore, the steam supply pipeline is connected to one end of the steam turbine generator set via an inlet steam pipeline, which allows the steam to enter the turbine and continue to perform work.

[0010] Furthermore, the switching assembly includes: Guide tube; The power transmission mechanism has multiple sets on the outside of the guide tube, and the power transmission mechanism corresponds one-to-one with the first power transmission tube and the second power transmission tube; The adjustment mechanism is slidably inserted inside the guide tube and is used to adjust the connection status between the power transmission mechanism and the first power transmission tube and the second power transmission tube.

[0011] Furthermore, the power transmission mechanism includes: The limiting plate is slidably inserted into the guide tube, and the guide tube is provided with a guide groove for guiding the movement of the limiting plate. The conductive rod is fixedly inserted inside the limiting plate. The conductive rod is slidably connected to the inside of the guide tube, the inside of the first power transmission tube, and the inside of the second power transmission tube. The lower end of the conductive rod is in contact with the adjustment mechanism. A clamping spring is sleeved on the outside of the conductive rod and located inside the guide groove, used to clamp the limiting plate.

[0012] Furthermore, the adjustment mechanism includes: The pull rod is slidably inserted into the guide tube; The adjusting shaft is fixedly connected to one end of the pull rod and is located inside the guide tube; The first conductive ring is sleeved on the outside of the adjusting shaft and is used to contact the conductive rod corresponding to the first power transmission pipe. An insulating limiting groove is provided on the outside of the adjusting shaft for disconnecting the power to the conductive rod corresponding to the first power transmission pipe. A first spacer shaft is provided between the insulating limiting groove and the first conductive ring. The two ends of the first spacer shaft are provided with chamfers for guiding the conductive rod from the first conductive ring into the insulating limiting groove. The transition section is located at one end of the insulating limiting groove relative to the first spacer axis; The second conductive ring is located on the outside of the adjusting shaft and at one end of the transition section relative to the insulating limiting groove, and is used to contact the conductive rod corresponding to the second power transmission pipe; The second spacer shaft is located outside the adjustment shaft and at one end of the relative transition section of the second conductive ring. The two ends of the second spacer shaft are provided with chamfers for guiding the conductive rod from one end of the adjustment shaft to the outside of the second conductive ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention controls a switch assembly to shut down the solar power generation module and turn on the thermal power module. The thermal power module continuously converts electrical energy into heat for user use, while the solar power generation module converts collected solar energy into electrical energy for storage. During peak power demand periods, when the thermal power module's output is insufficient to meet user needs, the switch assembly simultaneously turns on both the thermal and solar power generation modules. This allows the thermal power module to convert electrical energy into heat while the previously stored solar energy is also converted into heat for user use, thus achieving flexible participation in peak-shaving services and achieving energy conservation and environmental protection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the switch assembly of the present invention; Figure 3 For the present invention in Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 5 This is a schematic diagram showing the state of the second power transmission pipe being disconnected according to the present invention; Figure 6 This is a schematic diagram showing that both the first and second power transmission pipes of the present invention are disconnected.

[0015] Reference numerals: 1. Power generation unit; 11. Thermal power assembly; 111. Steam turbine generator set; 112. First transmission pipe; 1121. Conductive cavity; 1122. First molten salt electric heating device; 12. Solar power generation assembly; 121. Solar cell body; 122. Second molten salt electric heating device; 123. Second transmission pipe; 2. Heating regulation unit; 21. Switch assembly; 211. Guide tube; 2111. Guide groove; 212. Transmission mechanism; 2121. Limiting plate. ; 2122, Conductive rod; 2123, Tightening spring; 213, Adjusting mechanism; 2131, Pull-out rod; 2132, Adjusting shaft; 2133, First conductive ring; 2134, First spacer shaft; 2135, Insulating limiting groove; 2136, Transition section; 2137, Second conductive ring; 2138, Second spacer shaft; 22, Molten salt container; 23, Water supply pipeline; 24, Water supply system; 25, Steam supply pipeline; 26, Heat user; 27, Steam inlet pipeline. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-6 The present invention provides a technical solution: A solar-heated molten salt power generation and heating device includes: Heating regulation unit 2, molten salt container 22 for heating water, and switch assembly 21 located at the inflow end of molten salt container 22 for controlling the heating state of molten salt container 22; The power generation unit 1 includes a thermal power generation component 11 located at the inflow end of the switch assembly 21 for supplying power to heat the molten salt container 22, and a solar power generation component 12 located at the inflow end of the switch assembly 21 and on one side of the thermal power generation component 11 for assisting the thermal power generation component 11 in heating the molten salt container 22.

[0018] It should be noted that during off-peak heating periods, the solar power generation module 12 is turned off and the thermal power module 11 is turned on by the control switch assembly 21. This allows the thermal power module 11 to continuously convert electrical energy into heat energy for users. During this process, the solar power generation module 12 converts the collected solar energy into electrical energy for storage. When the power generation of the thermal power module 11 is insufficient to meet user demand during peak power periods, the control switch assembly 21 turns on both the thermal power module 11 and the solar power generation module 12 simultaneously. This allows the thermal power module 11 to convert electrical energy into heat energy while the previously stored solar energy is also converted into heat energy for users. This achieves flexible participation in peak shaving services and energy-saving and environmentally friendly effects.

[0019] As an improvement, such as Figure 1 As shown, the thermal power assembly 11 includes: Steam turbine generator set 111; The first power transmission pipe 112 is connected at one end to the steam turbine generator set 111 and at the other end to the switch assembly 21, and is used to supply the electricity generated by the steam turbine generator set 111 to the molten salt container 22 through the switch assembly 21. The turbine generator set 111 and the switch assembly 21 are connected by a first molten salt electric heating device 1122 via a first power transmission pipe 112, which is used to utilize the electricity generated by the turbine generator set 111.

[0020] Furthermore, the solar power generation module 12 includes: Solar cell 121 is used to collect energy generated by the sun; The second molten salt electric heating device 122 is connected to one end of the solar cell body 121 and is used to store and utilize the energy collected by the solar energy. The second power transmission pipe 123 is connected at one end to the second molten salt electric heating device 122 and at the other end to the switch assembly 21, and is used to assist the first power transmission pipe 112 in supplying power to the molten salt container device 22.

[0021] Furthermore, the heating regulation unit 2 also includes: Water supply pipe 23 is connected to the lower part of the molten salt container 22 and is used to supply water to the molten salt container 22; Water supply system 24, connected to the inflow end of water supply pipe 23, is used to deoxygenate the water supplied by water supply pipe 23; Steam supply pipe 25 is connected to the side of the molten salt container 22 and is used to discharge water vapor inside the molten salt container 22. Heat user 26 is connected to the outflow end of the steam supply pipeline 25 and is used to exchange heat with the water vapor output from the steam supply pipeline 25.

[0022] Among them, such as Figure 1 As shown, the steam supply pipeline 25 is connected to one end of the steam turbine generator set 111 via an inlet steam pipeline 27, which enters the steam turbine to continue doing work.

[0023] As an improvement, such as Figure 1-6 As shown, the switch assembly 21 includes: Guide tube 211; The power transmission mechanism 212 has multiple sets on the outside of the guide tube 211, and the power transmission mechanism 212 corresponds one-to-one with the first power transmission tube 112 and the second power transmission tube 123; The adjustment mechanism 213 is slidably inserted into the guide tube 211 and is used to adjust the connection state between the power transmission mechanism 212 and the first power transmission tube 112 and the second power transmission tube 123. The lower ends of the first power transmission pipe 112 and the second power transmission pipe 123 are provided with conductive cavities 1121 that are slidably connected to the conductive rod 2122.

[0024] Furthermore, such as Figure 2-3 As shown, the power transmission mechanism 212 includes: The limiting disk 2121 is slidably inserted into the guide tube 211. The guide tube 211 is provided with a guide groove 2111 for guiding the movement of the limiting disk 2121. The conductive rod 2122 is fixedly inserted into the limiting plate 2121. The conductive rod 2122 is slidably connected to the inside of the guide tube 211, the inside of the first power transmission tube 112, and the inside of the second power transmission tube 123. The lower end of the conductive rod 2122 is in contact with the adjusting mechanism 213. The clamping spring 2123 is sleeved on the outside of the conductive rod 2122 and located inside the guide groove 2111, and is used to clamp the limiting plate 2121.

[0025] Furthermore, such as Figure 4 As shown, the adjustment mechanism 213 includes: The pull rod 2131 is slidably inserted into the guide tube 211; The adjusting shaft 2132 is fixedly connected to one end of the pull rod 2131 and is located inside the guide tube 211; The first conductive ring 2133 is sleeved on the outside of the adjusting shaft 2132 and is used to contact the conductive rod 2122 corresponding to the first power transmission pipe 112. An insulating limiting groove 2135 is provided on the outside of the adjusting shaft 2132 for disconnecting the power to the conductive rod 2122 corresponding to the first power transmission pipe 112. A first spacer shaft 2134 is provided between the insulating limiting groove 2135 and the first conductive ring 2133. The two ends of the first spacer shaft 2134 are provided with chamfers for guiding the conductive rod 2122 from the first conductive ring 2133 into the insulating limiting groove 2135. The transition section 2136 is provided at one end of the insulating limiting groove 2135 relative to the first spacer shaft 2134; The second conductive ring 2137 is located on the outside of the adjusting shaft 2132 and at one end of the transition section 2136 relative to the insulating limiting groove 2135, and is used to contact the conductive rod 2122 corresponding to the second power transmission pipe 123. The second spacer shaft 2138 is located outside the adjustment shaft 2132 and at one end of the relative transition section 2136 of the second conductive ring 2137. The two ends of the second spacer shaft 2138 are provided with chamfers for guiding the conductive rod 2122 from one end of the adjustment shaft 2132 to the outside of the second conductive ring 2137.

[0026] It should be noted that: in the specific implementation process of this invention, such as Figure 1 , Figure 4-5 As shown, during the off-peak heating period, the conductive rod 2122 corresponding to the second power transmission pipe 123 separates from the second conductive ring 2137. The solar cell body 121 collects solar energy and stores it through the second molten salt electric heating device 122. The conductive rod 2122 corresponding to the first power transmission pipe 112 contacts the first conductive ring 2133. The steam turbine generator set 111 generates electricity and supplies it to the molten salt container 22 after passing through the first power transmission pipe 112, the conductive rod 2122, the first conductive ring 2133, and the conductive rod 2122 in sequence. This allows the molten salt container 22 to heat the water inside. The water vapor generated by heating is transported to the heat user 26 through the steam supply pipe 25 for user use. like Figure 1 As shown, in this process, excess electric heat supplied by the steam supply pipeline 25 can be diverted to the steam turbine generator set 111 through the steam inlet pipeline 27 for the use of the steam turbine generator set 111.

[0027] like Figure 1-5As shown, during peak heating periods, the pull rod 2131 is pushed along the guide pipe 211. The pull rod 2131 drives the adjusting shaft 2132 to move along the direction of the guide pipe 211, so that the conductive rod 2122 corresponding to the second power transmission pipe 123 switches from the original state of being separated from the second conductive ring 2137 to the state of being in contact. The conductive rod 2122 corresponding to the first power transmission pipe 112 continues to be in contact with the first conductive ring 2133. At this time, when the steam turbine generator set 111 generates electricity and supplies it to the molten salt container 22 in sequence through the first power transmission pipe 112, conductive rod 2122, first conductive ring 2133, and conductive rod 2122, the second molten salt electric heating device 122 delivers the stored energy to the molten salt container 22 in sequence through the second power transmission pipe 123, conductive rod 2122, first conductive ring 2133, and conductive rod 2122. This ensures that the heat supply during peak heating periods meets the needs of users, reduces coal consumption, and saves energy and protects the environment. like Figure 1 , Figure 4 , Figure 6 As shown, when the molten salt container 22 needs to be cleaned and maintained and requires a power-off operation, simply pull the pull rod 2131 in the reverse direction. The pull rod 2131 drives the adjusting shaft 2132 to move along the guide tube 211, so that the conductive rod 2122 corresponding to the first power transmission pipe 112 transitions from the first conductive ring 2133 through the first spacer shaft 2134 into the insulating limiting groove 2135, and the conductive rod 2122 corresponding to the second power transmission pipe 123 transitions from the second conductive ring 2137 through the second spacer shaft 2138 to separate from the second conductive ring 2137. At this time, the molten salt container 22 is in a completely de-energized state, which facilitates the cleaning and maintenance of the molten salt container 22.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molten salt power generation and heating device based on solar heating, characterized in that, include: Heating regulation unit (2), molten salt container (22) for heating water, and switch assembly (21) located at the inflow end of molten salt container (22) for controlling the heating state of molten salt container (22); The power generation unit (1) includes a thermal power component (11) located at the inflow end of the switch assembly (21) for supplying power to heat the molten salt container (22), and a solar power generation component (12) located at the inflow end of the switch assembly (21) and on one side of the thermal power component (11) for assisting the thermal power component (11) in heating the molten salt container (22).

2. The molten salt power generation and heating device based on solar heating according to claim 1, characterized in that: The thermal power assembly (11) includes: Steam turbine generator set (111); The first power transmission pipe (112) is connected at one end to the steam turbine generator set (111) and at the other end to the switch assembly (21), and is used to supply the electricity generated by the steam turbine generator set (111) to the molten salt container (22) through the switch assembly (21).

3. The molten salt power generation and heating device based on solar heating according to claim 2, characterized in that: The solar power generation module (12) includes: Solar cell (121) is used to collect energy generated by the sun; The second molten salt electric heating device (122) is connected to one end of the solar cell body (121) and is used to store and utilize the energy collected by the solar energy. The second power transmission pipe (123) is connected at one end to the second molten salt electric heating device (122) and at the other end to the switch assembly (21), and is used to assist the first power transmission pipe (112) in supplying power to the molten salt container (22).

4. The molten salt power generation and heating device based on solar heating according to claim 3, characterized in that: The heating regulation unit (2) also includes: A water supply pipe (23) is connected to the lower part of the molten salt container (22) for supplying water to the molten salt container (22); A water supply system (24) is connected to the inflow end of the water supply pipe (23) and is used to deoxygenate the water supplied by the water supply pipe (23); A steam supply pipe (25) is connected to the side of the molten salt container (22) for discharging water vapor from the molten salt container (22); A heat user (26) is connected to the outlet end of the steam supply pipeline (25) and is used to exchange and utilize the water vapor output from the steam supply pipeline (25).

5. The molten salt power generation and heating device based on solar heating according to claim 4, characterized in that: The steam supply pipeline (25) is connected to one end of the steam turbine generator set (111) via an inlet pipeline (27), which enters the steam turbine to continue doing work.

6. The molten salt power generation and heating device based on solar heating according to claim 3, characterized in that: The switching assembly (21) includes: Guide tube (211); The power transmission mechanism (212) is provided in multiple sets on the outside of the guide tube (211), and the power transmission mechanism (212) corresponds one-to-one with the first power transmission tube (112) and the second power transmission tube (123); The adjustment mechanism (213) is slidably inserted inside the guide tube (211) and is used to adjust the connection state between the power transmission mechanism (212) and the first power transmission tube (112) and the second power transmission tube (123).

7. The molten salt power generation and heating device based on solar heating according to claim 6, characterized in that: The power transmission mechanism (212) includes: The limiting plate (2121) is slidably inserted into the guide tube (211) and the guide tube (211) is provided with a guide groove (2111) for guiding the movement of the limiting plate (2121). The conductive rod (2122) is fixedly inserted into the limiting plate (2121). The conductive rod (2122) is slidably connected to the inside of the guide tube (211), the inside of the first power transmission tube (112), and the inside of the second power transmission tube (123). The lower end of the conductive rod (2122) is in contact with the adjusting mechanism (213). A clamping spring (2123) is sleeved on the outside of the conductive rod (2122) and located inside the guide groove (2111) to clamp the limiting plate (2121).

8. The molten salt power generation and heating device based on solar heating according to claim 6, characterized in that: The adjustment mechanism (213) includes: The pull rod (2131) is slidably inserted into the guide tube (211); The adjusting shaft (2132) is fixedly connected to one end of the pull rod (2131) and located inside the guide tube (211); The first conductive ring (2133) is sleeved on the outside of the adjusting shaft (2132) and is used to contact the conductive rod (2122) corresponding to the first power transmission pipe (112); An insulating limiting groove (2135) is provided on the outside of the adjusting shaft (2132) for disconnecting the power to the conductive rod (2122) corresponding to the first power transmission pipe (112). A first spacer shaft (2134) is provided between the insulating limiting groove (2135) and the first conductive ring (2133). The two ends of the first spacer shaft (2134) are provided with chamfers for guiding the conductive rod (2122) from the first conductive ring (2133) into the insulating limiting groove (2135). A transition section (2136) is provided at one end of the insulating limiting groove (2135) relative to the first spacer shaft (2134); The second conductive ring (2137) is located outside the adjusting shaft (2132) and at one end of the transition section (2136) relative to the insulating limiting groove (2135), and is used to contact the conductive rod (2122) corresponding to the second power transmission pipe (123); The second spacer shaft (2138) is located outside the adjustment shaft (2132) and at one end of the relative transition section (2136) of the second conductive ring (2137). The two ends of the second spacer shaft (2138) are provided with chamfers for guiding the conductive rod (2122) from one end of the adjustment shaft (2132) to the outside of the second conductive ring (2137).

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