A new type of plate collector heat collection system and installation structure

Abstract

The present invention discloses a novel plate-type collector thermal system and an installation structure, which belongs to the technical field of solar thermal power generation. It includes a plate-type collector outer tube and a plate-type collector inner tube. Both the plate-type collector outer tube and the plate-type collector inner tube are in the shape of a flared semi-cylindrical shape. The plate-type collector inner tube is arranged inside the plate-type collector outer tube. Both ends of the plate-type collector outer tube and the plate-type collector inner tube are fixedly connected by stainless steel plates with circular holes opened. An inner tube support tube is arranged between the circular holes at the same end of the plate-type collector inner tube and the plate-type collector outer tube. The inner tube support tube is used for the fixed connection of the plate-type collector outer tube and the plate-type collector inner tube. A heat collection plate is fixedly connected to the opening side of the plate-type collector inner tube, and the opening side of the plate-type collector outer tube is sealed with glass and evacuated. The plate-type collector planarizes the heat receiving surface of the glass tube type vacuum heat collecting tube and is shaped differently according to the needs of the installation shape, so that the heat receiving surfaces of the plate-type collectors are spliced to form a large-area heat receiving surface erected at a high altitude.

Description

Technical Field

[0001] The invention belongs to the technical field of solar thermal power generation, and particularly relates to a heat collection system and an installation structure of a novel plate type collector. Background Art

[0002] The structure of the tower type high-temperature collector and the performance of existing materials severely limit the further improvement of the collector efficiency. The heat loss caused by the secondary focusing of the Fresnel lens in the linear Fresnel type heat collection system, the shielding rate of the primary reflector, the shielding of the primary reflector by the heat collection pipe, the heat collection pipe support and the secondary reflector, and the end loss of the heat collection pipe seriously affect the optical efficiency of the linear Fresnel type heat collection mirror field. The heat dissipation loss caused by the too long molten salt conveying pipeline and the too long heat collection pipe, and the power consumption of the molten salt conveying pump further reduce the thermal efficiency of the linear Fresnel heat collection system. Moreover, the investment cost of the linear Fresnel heat collection system remains high, severely restricting its development. The invention aims to solve the problems of low thermal efficiency of the tower type high-temperature collector, low thermal efficiency of the linear Fresnel heat collection system, complex structure and high investment cost. Summary of the Invention

[0003] The technical problem to be solved by the invention is to propose a heat collection system and an installation structure of a novel plate type collector aiming at the problems of low thermal efficiency of the existing tower type high-temperature collector and low efficiency and high cost of the linear Fresnel type heat collection system.

[0004] In order to achieve the above object, the technical solution adopted by the invention is:

[0005] The heat collection system of the novel plate type collector includes an outer pipe of the plate type collector and an inner pipe of the plate type collector. The inner pipe of the plate type collector is arranged inside the outer pipe of the plate type collector. Both ends of the outer pipe of the plate type collector and the inner pipe of the plate type collector are sealed by stainless steel plates. Circular holes are opened on the stainless steel plates. Inner pipe support pipes are arranged between the circular holes on the same side of the inner pipe of the plate type collector and the outer pipe of the plate type collector. The inner pipe support pipes are used for the fixed connection of the outer pipe of the plate type collector and the inner pipe of the plate type collector. Heat collection plates are fixedly connected to the opening side and both ends of the inner pipe of the plate type collector and the stainless steel plates. Slots are opened on the stainless steel plates at both ends of the outer pipe of the plate type collector and the opening side of the outer pipe. Glass is arranged in the slots.

[0006] The inner pipe of the plate type collector, the heat collection plates and the stainless steel plates are combined to form an inner cavity of the plate type collector. The inner pipe of the plate type collector, the outer pipe of the plate type collector, the stainless steel plates at both ends of the outer pipe and the glass are combined to form a vacuum cavity.

[0007] The number of the inner pipe support pipes is two. One end of one inner pipe support pipe is fixedly connected to the low-temperature molten salt inlet pipe of the plate heat collector, and the other end is fixedly connected to one end of the inner cavity of the plate heat collector. The other end of the inner cavity of the plate heat collector is fixedly connected to one end of the other inner pipe support pipe, and the other end of the other inner pipe support pipe is connected to the high-temperature molten salt outlet pipe.

[0008] One end of the vertical support is fixedly connected to the ground foundation. The number of the vertical supports is several. Adjacent two vertical supports are fixedly connected by a vertical support connecting beam. The vertical supports are in a concentric circle shape, and one end of the vertical support is fixedly connected to the cross beam.

[0009] The vertical support is fixedly connected to the intersection of the upper cantilever. The number of the upper cantilevers is several. The intersections of several upper cantilevers are fixedly connected by a cantilever connecting plate. The end of the upper cantilever is fixedly connected to the upper ring beam. The cantilever connecting plate is fixedly connected to the middle cantilever. The number of the middle cantilevers is several. The intersections of several middle cantilevers meet at the cantilever connecting plate. The end of the middle cantilever is fixedly connected to the middle ring beam. The cantilever connecting plate is fixedly connected to the lower cantilever. The number of the lower cantilevers is several. The intersections of several lower cantilevers meet at the cantilever connecting plate. The end of the lower cantilever is fixedly connected to the lower ring beam.

[0010] The top end of the upper cantilever is fixedly connected to an upper header. An upper header inlet and an upper header high-temperature molten salt outlet are arranged on the upper header. One end of the upper header inlet is fixedly connected to one end of a high-temperature molten salt outlet connecting pipe. The other end of the high-temperature molten salt outlet connecting pipe is fixedly connected to the high-temperature molten salt outlet pipe. One end of the upper header high-temperature molten salt outlet is fixedly connected to one end of a high-temperature molten salt return pipe. The other end of the high-temperature molten salt return pipe is fixedly connected to the high-temperature molten salt tank inlet.

[0011] The number of the vertical support connecting beams is several. One end of the topmost vertical support connecting beam is fixedly connected to a lower header. A lower header low-temperature molten salt inlet and a lower header outlet are arranged on the lower header. The lower header low-temperature molten salt inlet is fixedly connected to one end of a low-temperature molten salt inlet connecting pipe. The other end of the low-temperature molten salt inlet connecting pipe is fixedly connected to the low-temperature molten salt inlet pipe of the plate heat collector. The lower header outlet is fixedly connected to one end of a low-temperature molten salt conveying pipe. The other end of the low-temperature molten salt conveying pipe is fixedly connected to a low-temperature molten salt conveying pump. A low-temperature molten salt conveying pump outlet and a low-temperature molten salt conveying pump inlet are arranged on the low-temperature molten salt conveying pump. The low-temperature molten salt conveying pump inlet is fixedly connected to the low-temperature molten salt tank outlet pipe.

[0012] On the back of the outer tube of the plate-type collector, mounting lugs are fixedly connected. One end of the mounting lug is hinged to one end of the plate-type collector suspension rod, and the other end of the plate-type collector suspension rod is fixedly connected to the upper ring beam. The mounting lug in the middle of the plate-type collector is hinged to one end of the plate-type collector suspension rod, and the other end of the plate-type collector suspension rod is fixedly connected to the middle ring beam. The mounting lug at the bottom of the plate-type collector is hinged to one end of the plate-type collector suspension rod, and the other end of the plate-type collector suspension rod is fixedly connected to the lower ring beam.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The plate-type collector described in the present invention planarizes the heat-receiving surface of the glass-tube vacuum heat-collecting tube and shapes it abnormally according to the needs of the installation shape. After the heat-receiving surfaces of the plate-type collectors are spliced, a complete large-area heat-receiving surface is formed. This heat-receiving surface can fully utilize the solar energy reflected by the reflector to the heat-receiving surface without the need for secondary focusing by a Fresnel lens. And due to the installation at high altitude, the shading of the reflector by various bracket devices is reduced, and the shading rate between reflectors is also reduced.

[0015] Supported by a steel structure bracket, the top collector of the tower-type heat-collecting system is changed to a plate-type collector. The plate-type collector is installed at the top of the steel structure bracket in a horn shape, with the large mouth of the horn facing vertically upward and the small mouth facing vertically downward, and the horn barrel tilting downward, facing the reflector mirror field. This structure and installation method of the plate-type collector integrate the advantages of the simple structure, low failure rate, and low investment of the tower-type collector and the high efficiency of the plate-type collector, and abandon the disadvantages of the low efficiency of the tower-type collector, the high cost of the linear Fresnel structure, the complex structure, the too long heat-collecting tubes and conveying pipelines, the high shading rate of the heat-collecting mirror field, and the high failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the plate-type collector in an embodiment of the present invention.

[0017] Figure 2 It is a schematic side view structural diagram of the plate-type collector in an embodiment of the present invention.

[0018] Figure 3 It is an embodiment of the present invention Figure 2 The enlarged schematic diagram at A in the figure.

[0019] Figure 4 It is a schematic installation structure diagram of the figure in an embodiment of the present invention.

[0020] Figure 5 It is a schematic top view installation structure diagram of the figure in an embodiment of the present invention.

[0021] Figure 6 It is a schematic side view installation structure diagram of the figure in an embodiment of the present invention.

[0022] Figure 7It is a schematic diagram of the position of the upper header in the embodiment of the present invention.

[0023] Reference numerals and names of the drawings: plate-type collector 1, mounting ear plate 5, low-temperature molten salt inlet pipe 6 of the plate-type collector, glass 7, high-temperature molten salt outlet pipe 8, inner cavity 10 of the plate-type collector, inner pipe 11 of the plate-type collector, vacuum cavity 12, outer pipe 14 of the plate-type collector, heat collection plate 15, cross beam 16, upper cantilever 18, middle cantilever 19, lower cantilever 20, suspension rod 21 of the plate-type collector, vertical support 23, vertical support connecting beam 24, upper ring beam 25, middle ring beam 26, lower ring beam 27, upper header 30, high-temperature molten salt outlet connecting pipe 31, inlet 32 of the upper header, high-temperature molten salt return pipe 33, lower header 34, low-temperature molten salt inlet connecting pipe 35, outlet 36 of the lower header, low-temperature molten salt conveying pipe 37, high-temperature molten salt outlet 38 of the upper header, low-temperature molten salt inlet 39 of the lower header, inner pipe support pipe 40, inlet 42 of the high-temperature molten salt tank, outlet 43 of the low-temperature molten salt conveying pump, inlet 44 of the low-temperature molten salt conveying pump, outlet pipe 45 of the low-temperature molten salt tank, low-temperature molten salt conveying pump 46, cantilever connecting plate 47. Detailed implementation manners

[0024] The present invention will be described in detail below with reference to the drawings and specific embodiments. Here, the schematic embodiments and descriptions of the present invention are used to explain the present invention, but do not limit the present invention.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0026] Embodiment 1

[0027] As Figure 1-7As shown in the figure, a novel plate-type collector thermal system and its installation mechanism of the present invention include a plate-type heat collection outer tube 14 and a plate-type heat collector inner tube 11. The plate-type heat collector inner tube 11 is arranged inside the plate-type heat collection outer tube 14. Both ends of the plate-type heat collection outer tube 14 and the plate-type heat collector inner tube 11 are sealed by stainless steel plates. Circular holes are opened in the stainless steel plates. An inner tube support tube 40 is arranged between the circular holes on the same side of the plate-type heat collector inner tube 11 and the plate-type heat collection outer tube 14. The inner tube support tube 40 is used for the fixed connection of the plate-type heat collection outer tube 14 and the plate-type heat collector inner tube 11. Heat collection plates 15 are fixedly connected to the stainless steel plates on the opening side and both ends of the plate-type heat collector inner tube 11. Card slots are opened on the stainless steel plates on the opening side and both ends of the plate-type heat collection outer tube 14. Glass 7 is arranged in the card slots. The plate-type heat collector inner tube 11, the heat collection plates 15 and the stainless steel plates are combined to form a plate-type heat collector inner cavity 10. The plate-type heat collector inner tube 11, the plate-type heat collection outer tube 14 and the glass 7 in the card slots are combined to form a vacuum cavity 12. The number of the inner tube support tubes 40 is two. One end of one inner tube support tube 40 is fixedly connected to a plate-type heat collector low-temperature molten salt inlet pipe 6, and the other end is fixedly connected to one end of the plate-type heat collector inner cavity 10. The other end of the plate-type heat collector inner cavity 10 is fixedly connected to one end of the other inner tube support tube 40, and the other end of the other inner tube support tube 40 is connected to a high-temperature molten salt outlet pipe 8.

[0028] The plate-type heat collector of the present invention planarizes the heat-receiving surface of the glass-tube vacuum heat-collecting tube and shapes it abnormally according to the needs of the installation shape. After the heat-receiving surfaces of the plate-type heat collectors are spliced, a complete large-area heat-receiving surface is formed. Such a heat-receiving surface can fully utilize the solar energy reflected by the reflector to the heat-receiving surface without the need for secondary focusing by a Fresnel lens. And due to the installation at high altitude, the shielding of various bracket devices is reduced and the shielding rate between reflectors is reduced.

[0029] One end of the vertical bracket 23 is fixedly connected to the ground foundation. The number of the vertical brackets 23 is several. Adjacent two vertical brackets 23 are fixedly connected by a vertical bracket connecting beam 24. The vertical brackets 23 are in a concentric circle shape. One end of the vertical bracket 23 is fixedly connected to the cross beam 16. The intersection of the vertical bracket 23 and the upper cantilever 18 is fixedly connected. The number of the upper cantilevers 18 is several. The intersection of several upper cantilevers 18 is fixedly connected by a cantilever connecting plate 47. The end of the upper cantilever 18 is fixedly connected to the upper ring beam 25. The cantilever connecting plate 47 is fixedly connected to the middle cantilever 19. The number of the middle cantilevers 19 is several. Several middle cantilevers 19 intersect at the cantilever connecting plate 47. The end of the middle cantilever 19 is fixedly connected to the middle ring beam 26. The cantilever connecting plate 47 is fixedly connected to the lower cantilever 20. The number of the lower cantilevers 20 is several. Several lower cantilevers 20 intersect at the cantilever connecting plate 47. The end of the lower cantilever 20 is fixedly connected to the lower ring beam 27. The top of the upper cantilever 18 is fixedly connected with an upper header 30. An upper header inlet 32 and an upper header high-temperature molten salt outlet 38 are arranged on the upper header 30. One end of the upper header inlet 32 is fixedly connected to one end of a high-temperature molten salt outlet connecting pipe 31. The other end of the high-temperature molten salt outlet connecting pipe 31 is fixedly connected to a high-temperature molten salt outlet pipe 8. One end of the upper header high-temperature molten salt outlet 38 is fixedly connected to one end of a high-temperature molten salt return pipe 33. The other end of the high-temperature molten salt return pipe 33 is fixedly connected to a high-temperature molten salt tank inlet 42. The number of the vertical bracket connecting beams 24 is several. One end of the topmost vertical bracket connecting beam 24 is fixedly connected to a lower header 34. A lower header low-temperature molten salt inlet 39 and a lower header outlet 36 are arranged on the lower header 34. One end of the lower header low-temperature molten salt inlet 39 is fixedly connected to one end of a low-temperature molten salt inlet connecting pipe 35. The other end of the low-temperature molten salt inlet connecting pipe 35 is fixedly connected to a plate type collector low-temperature molten salt inlet pipe 6. One end of the lower header outlet 36 is fixedly connected to one end of a low-temperature molten salt conveying pipe 37. The other end of the low-temperature molten salt conveying pipe 37 is fixedly connected to a low-temperature molten salt conveying pump 46. A low-temperature molten salt conveying pump outlet 43 and a low-temperature molten salt conveying pump inlet 44 are arranged on the low-temperature molten salt conveying pump 46. The low-temperature molten salt conveying pump inlet 44 is fixedly connected to a low-temperature molten salt tank outlet pipe 45. One side of the plate type collector outer pipe 14 is fixedly connected with a mounting ear plate 5. One end of the mounting ear plate 5 is hinged to a plate type collector suspender 21. The other end of the plate type collector suspender 21 is fixedly connected to the upper ring beam 25. The mounting ear plate 5 in the middle of the plate type collector is hinged to one end of the plate type collector suspender 21. The other end of the plate type collector suspender 21 is fixedly connected to the middle ring beam 26. The mounting ear plate 5 at the bottom of the plate type collector is hinged to one end of the plate type collector suspender 21. The other end of the plate type collector suspender 21 is fixedly connected to the lower ring beam 27. This device is composed of multiple plate type collectors, and is fixedly connected and spliced into a flared shape through a plate type collector 1 connecting pipe 9.

[0030] In the low-temperature molten salt tank 29, the low-temperature molten salt is pumped by the low-temperature molten salt transfer pump 46 through the low-temperature molten salt outlet pipe 45 to the low-temperature molten salt transfer pump inlet 44. After being pressurized, it flows out from the low-temperature molten salt transfer pump outlet 43 into the low-temperature molten salt transfer pipe 37, and then flows into the lower header 34 through the lower header low-temperature molten salt inlet 39. It flows into the plate heat collector low-temperature molten salt inlet pipe 6 through the low-temperature molten salt inlet connecting pipe 35 and enters the plate heat collector 1. The sunlight reflected by the reflector passes through the glass 7 and irradiates onto the heat collection plate 15 to heat the heat collection plate 15. The heat collection plate 15 transfers the heat to the heat sink 4, and the heat sink 4 heats the molten salt flowing through the inner cavity 10 of the plate heat collector. The heated molten salt flows to the top of the heat collection plate 1, and then flows to the upper header inlet 32 through the plate heat collector high-temperature molten salt outlet pipe 8 and the high-temperature molten salt outlet connecting pipe 31, and then flows into the upper header 30. It flows into the high-temperature molten salt return pipe 33 from the upper header high-temperature molten salt outlet 38 and enters the high-temperature molten salt tank 28 through the high-temperature molten salt tank inlet 42.

[0031] This solution uses a steel structure support. The tower-top heat collector of the tower-type heat collection system is changed to a plate heat collector. The plate heat collector is installed in a horn shape at the top of the steel structure support. The large mouth of the horn is vertically upward and the small mouth is vertically downward. The horn barrel is inclined downward and faces the reflector mirror field. This structure and installation method of the plate heat collector combines the advantages of the tower structure, such as low cost, simple structure, low failure rate, and low investment, and the high efficiency of the plate heat collector, and abandons the disadvantages of the tower structure, such as low efficiency, high cost of the linear Fresnel structure, complex structure, long heat collection pipes and conveying pipes, high shading rate of the heat collection mirror field, and high failure rate. In order to solve the problems of the large-area high-altitude installation of the plate heat collector and the problem that the installation shape of the plate heat collector is large at one end and small at the other end (like a flared opening), the present invention provides an installation method of extending the cantilever at the top of the vertical support of the steel structure to solve the problem of large-area high-altitude installation of the plate heat collector, and provides a structure of the plate heat collector to solve the problem that the installation shape of the plate heat collector is large at one end and small at the other end.

[0032] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention.

Claims

1. A novel plate-type collector heat collection system, comprising a plate-type collector outer tube (14) and a plate-type collector inner tube (11), characterized in that: The inner tube (11) of the plate-type collector is arranged inside the outer tube (14) of the plate-type collector. Both ends of the outer tube (14) of the plate-type collector and the inner tube (11) of the plate-type collector are sealed by stainless steel plates. Circular holes are opened on the stainless steel plates. An inner tube support tube (40) is arranged between the circular holes on the same side of the inner tube (11) of the plate-type collector and the outer tube (14) of the plate-type collector. The inner tube support tube (40) is used for the fixed connection of the outer tube (14) of the plate-type collector and the inner tube (11) of the plate-type collector. Heat collecting plates (15) are fixedly connected to the stainless steel plates on the opening side and both ends of the inner tube (11) of the plate-type collector. Card slots are opened on the stainless steel plates at both ends of the outer tube (14) of the plate-type collector and on the opening side of the outer tube. Glass (7) is arranged in the card slots; The installation structure of the heat collection system of the novel plate-type collector includes a vertical support (23). One end of the vertical support (23) is fixedly connected to the ground foundation. The number of the vertical supports (23) is several. Adjacent two vertical supports (23) are fixedly connected by a vertical support connecting beam (24). The vertical supports (23) are in a concentric circle shape. The top end of the vertical support (23) is fixedly connected to a cross beam (16); An installation ear plate (5) is fixedly connected to the back of the outer tube (14) of the plate-type collector. One end of the installation ear plate (5) is hinged to one end of a plate-type collector suspension rod (21). The other end of the plate-type collector suspension rod (21) is fixedly connected to an upper ring beam (25). The installation ear plate (5) in the middle of the plate-type collector is hinged to one end of a plate-type collector suspension rod (21). The other end of the plate-type collector suspension rod (21) is fixedly connected to a middle ring beam (26). The installation ear plate (5) at the bottom of the plate-type collector is hinged to one end of a plate-type collector suspension rod (21). The other end of the plate-type collector suspension rod (21) is fixedly connected to a lower ring beam (27); The vertical support (23) is fixedly connected to the intersection of the upper cantilever (18). The number of the upper cantilevers (18) is several. The intersections of several upper cantilevers (18) are fixedly connected by a cantilever connecting plate (47). The end of the upper cantilever (18) is fixedly connected to the upper ring beam (25). The cantilever connecting plate (47) is fixedly connected to a middle cantilever (19). The number of the middle cantilevers (19) is several. Several middle cantilevers (19) intersect at the cantilever connecting plate (47). The end of the middle cantilever (19) is fixedly connected to the middle ring beam (26). The cantilever connecting plate (47) is fixedly connected to a lower cantilever (20). The number of the lower cantilevers (20) is several. Several lower cantilevers (20) intersect at the cantilever connecting plate (47). The end of the lower cantilever (20) is fixedly connected to the lower ring beam (27).

2. A heat collection system for a novel plate-type collector according to claim 1, characterized in that: The inner tube (11) of the plate-type collector, the heat collecting plate (15) and the stainless steel plate are combined to form an inner cavity (10) of the plate-type collector. The inner tube (11) of the plate-type collector, the outer tube (14) of the plate-type collector and the glass in the card slot are combined to form a vacuum cavity (12).

3. A novel plate-type collector heat collection system according to claim 1, characterized in that: The number of the inner tube support pipes (40) is two. One end of one inner tube support pipe (40) is fixedly connected to the low-temperature molten salt inlet pipe (6) of the plate heat collector, and the other end is fixedly connected to one end of the inner cavity (10) of the plate heat collector. The other end of the inner cavity (10) of the plate heat collector is fixedly connected to one end of the other inner tube support pipe (40), and the other end of the other inner tube support pipe (40) is connected to the high-temperature molten salt outlet pipe (8).

4. A novel plate-type collector heat collection system according to claim 1, characterized in that: The upper cantilever (18) is fixedly connected to the upper header (30). The upper header (30) is provided with an upper header inlet (32) and an upper header high-temperature molten salt outlet (38). The upper header inlet (32) is fixedly connected to one end of the high-temperature molten salt outlet connecting pipe (31). The other end of the high-temperature molten salt outlet connecting pipe (31) is fixedly connected to the high-temperature molten salt outlet pipe (8). The upper header high-temperature molten salt outlet (38) is fixedly connected to one end of the high-temperature molten salt return pipe (33). The other end of the high-temperature molten salt return pipe (33) is fixedly connected to the high-temperature molten salt tank inlet (42).

5. A novel plate-type collector heat collection system according to claim 1, characterized in that: The number of the vertical support beam connectors (24) is several. One end of the topmost vertical support beam connector (24) is fixedly connected to the lower header (34). The lower header (34) is provided with a lower header low-temperature molten salt inlet (39) and a lower header outlet (36). The lower header low-temperature molten salt inlet (39) is fixedly connected to one end of the low-temperature molten salt inlet connecting pipe (35). The other end of the low-temperature molten salt inlet connecting pipe (35) is fixedly connected to the low-temperature molten salt inlet pipe 6 of the plate heat collector. The lower header outlet (36) is fixedly connected to one end of the low-temperature molten salt delivery pipe (37). The other end of the low-temperature molten salt delivery pipe (37) is fixedly connected to the low-temperature molten salt delivery pump (46). The low-temperature molten salt delivery pump (46) is provided with a low-temperature molten salt delivery pump outlet (43) and a low-temperature molten salt delivery pump inlet (44). The low-temperature molten salt delivery pump inlet (44) is fixedly connected to the low-temperature molten salt tank outlet pipe (45).

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