Tower type photo-thermal power station fused salt heat absorption system water circulation test device

Abstract

The utility model relates to the technical field of photo-thermal power stations, in particular to a tower type photo-thermal power station fused salt heat absorption system water circulation test device which comprises a base, a shell and a steam generator, the shell is fixedly connected to the upper portion of the base, and a heat absorber tube panel heating area enlarging structure is arranged at the top end of the shell. And a water circulation test structure is arranged on the outer side of the shell. According to the tower type photo-thermal power station fused salt heat absorption system water circulation test device, the heat absorption plate is reinforced and supported at the top end of the heat absorber tube panel through the vertical columns, then the temperature of the black heat absorption plate can be rapidly increased, and then heat is rapidly conveyed to the lower heat absorber tube panel along the heat conduction strips; the metal copper has good heat conduction performance and can supply extra heat to a heat absorber tube panel used in a test, so that the test device which is reduced in equal proportion in a laboratory can heat circularly flowing water, and the test effect of the water circulation test device for the fused salt heat absorption system of the tower type photo-thermal power station is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photothermal power stations, in particular to a water circulation test device for a molten salt heat absorption system of a tower-type photothermal power station. Background Art

[0002] With increasing environmental protection requirements and the growing maturity of concentrated solar thermal power generation technology, CSP (concentrated solar power) power plants have become an emerging market in the power industry. Concentrated solar thermal power generation relies on heliostats to concentrate direct solar radiation, collect heat by heating a fluid, and then generate high-temperature steam through heat exchange, which drives a steam turbine to generate electricity. Based on the different solar energy collection methods, CSP power plants can be divided into four types: tower, trough, Fresnel, and butterfly.

[0003] For example, the authorization announcement number "CN213578170U" is named a tower-type solar thermal power station molten salt heat absorption system water circulation test device. A detachable blocking plate is added to realize the "cold salt tank → absorber tube screen → cold salt tank" water circulation test to prevent cold water from entering the hot salt tank. After the water circulation is completed, the blocking plate is removed and it can be used normally as part of the tower-type solar thermal power station. However, the existing tower-type solar thermal power station molten salt heat absorption system water circulation test device is a test device, so the volume of the test device is proportionally much smaller than that of normal solar thermal power station equipment. Therefore, the area of ​​the absorber tube screen used to absorb light for real-time heating will also be much smaller. Therefore, the absorber tube screen relies on a smaller area to absorb sunlight, which is far from meeting the requirements of heating the internal cold water. Therefore, it can only heat a small amount of warm water for transportation. The warm water cannot generate water vapor to drive the steam generator. Therefore, the test effect of the existing tower-type solar thermal power station molten salt heat absorption system water circulation test device will be greatly affected.

[0004] At the same time, the existing water circulation test device of the molten salt heat absorption system of the tower thermal power station requires external cold water to flow into the absorber tube panel, and then the cold water is heated by absorbing the heat of sunlight. Because the pipes in the absorber tube panel are relatively curved and twisted, the curved positions inside the pipes will produce more scale and impurity deposition as the heated water flows. After working for a long time, it will cause the pipes in the absorber tube panel to become blocked, affecting the working efficiency of the water circulation test device of the molten salt heat absorption system of the tower thermal power station. Utility Model Content

[0005] The purpose of the utility model is to solve the problems of poor test effect and low working efficiency of the water circulation test device of the molten salt heat absorption system of the tower type solar thermal power station, and to propose a water circulation test device of the molten salt heat absorption system of the tower type solar thermal power station.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A water circulation test device for the molten salt heat absorption system of a tower-type solar thermal power station is designed, comprising a base, a shell and a steam generator. The shell is fixedly connected to the top of the base, the steam generator is fixedly installed on the inner side of the shell, the top of the shell is provided with a heat absorber tube panel structure to expand the heating area, and the outer side of the shell is provided with a water circulation test structure.

[0008] Preferably, the structure for expanding the heating area of ​​the absorber tube panel includes a fixing frame and a top plate, a plurality of the fixing frames are fixedly installed on the top of the shell, a plurality of the fixing frames are fixedly installed above the absorber tube panel, a plurality of vertical columns are fixedly connected to the top of the absorber tube panel, a plurality of thermal conductive strips are fixedly connected inside the vertical columns, the top plate is fixedly installed on the top of the vertical columns, a heat absorbing plate is fixedly connected above the top plate, and the lower end of the heat absorbing plate is fixedly connected to the top of the thermal conductive strip.

[0009] Preferably, the water circulation test structure includes a cold salt tank and a hot salt tank, the cold salt tank is fixedly connected to one side of the outer wall of the shell, and the hot salt tank is fixedly connected to the other side of the outer wall of the shell, the top of the cold salt tank is fixedly connected to a rising pipe, the top of the rising pipe is fixedly connected to an inlet tank, an emergency compressed gas system is fixedly installed on the outside of the inlet tank, the top of the hot salt tank is fixedly connected to a downpipe, and the top of the downpipe is fixedly connected to an outlet tank.

[0010] Preferably, a detachable docking structure of the heat absorber tube panel is provided on both sides of the heat absorber tube panel, and the detachable docking structure of the heat absorber tube panel includes a docking tube and a connecting seat, the two docking tubes are fixedly connected to the two ends of the heat absorber tube panel, the outer sides of the two docking tubes are rotatably sleeved with threaded sleeves, the two connecting seats are fixedly connected to the two ends of the outlet tank and the inlet tank, the inner sides of the two connecting seats are fixedly connected with sealing sleeves, and the outer front ends of the two sealing sleeves are fixedly connected with threaded tubes.

[0011] Preferably, the two ends of the butt-jointed tubes are movably plugged into the inner side of the sealing sleeve, and the inner sides of the two threaded sleeves are threadably connected to the outer wall of the threaded tube.

[0012] Preferably, a water circulation test control structure is provided on the outside of the cold salt tank, and the water circulation test control structure includes a cold salt pump and a blocking plate. The cold salt pump is fixedly installed at one end of the cold salt tank, and the cold salt pump is connected to the riser. A temperature control pump is fixedly connected to one side of the outer wall of the cold salt tank, and the temperature control pump is connected to the steam generator. A balancing pipe valve is fixedly connected between the cold salt pump and the hot salt tank, and the blocking plate is movably installed between the downcomer and the hot salt tank and between the hot salt tank and the steam generator.

[0013] The utility model proposes a water circulation test device for the molten salt heat absorption system of a tower-type solar thermal power station. The beneficial effect is that the heat absorption plate is reinforced and supported on the top of the absorber tube panel by vertical columns, and then the temperature of the black heat absorption plate can be quickly increased, and then the heat is quickly transported to the absorber tube panel below along the heat conduction strip. Metallic copper has good thermal conductivity and can supply additional heat to the absorber tube panel used in the test. In this way, the laboratory-scaled test device can also heat the circulating water, thereby improving the test effect of the water circulation test device for the molten salt heat absorption system of the tower-type solar thermal power station.

[0014] The absorber tube panel with the inner side can be installed between the connecting seats on both sides through the butt-joint tube, and the end of the butt-joint tube is inserted into the sealing sleeve inside the connecting seat, and then the outer threaded sleeve is manually twisted toward the end of the threaded tube to rotate and tighten, which can improve the connection and fixation of the butt-joint tube and the sealing sleeve. The butt-joint tubes pulled out on both sides can be used to separate the lower end of the absorber tube panel from the fixed frame by cutting, and the scale and impurities are cleaned by passing high-pressure water flow into the inside of the absorber tube panel. This can effectively clean the inside of the curved and coiled absorber tube panel and reduce blockage, thereby improving the utilization efficiency of the water circulation test device of the molten salt heat absorption system of the tower-type solar thermal power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 A front cross-sectional schematic diagram of ;

[0017] Figure 3 for Figure 1 Schematic diagram of the top surface;

[0018] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0019] Figure 5 for Figure 2 Enlarged cross-sectional view of part B in the middle;

[0020] Figure 6 for Figure 2 Enlarged cross-sectional view of part C in the middle.

[0021] In the figure: 1. base, 2. shell, 3. steam generator, 4. water circulation test structure, 41. cold salt tank, 42. riser, 43. emergency compressed gas system, 44. inlet tank, 45. outlet tank, 46. downcomer, 47. hot salt tank, 5. structure for expanding heating area of ​​absorber tube panel, 51. fixing frame, 52. absorber tube panel, 53. vertical column, 54. heat conducting strip, 55. top plate, 56. absorber plate, 6. detachable docking structure of absorber tube panel, 61. docking pipe, 62. threaded sleeve, 63. threaded pipe, 64. sealing sleeve, 65. connecting seat, 7. water circulation test control structure, 71. cold salt pump, 72. temperature control pump, 73. balancing pipe valve, 74. blocking plate. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Example 1:

[0024] See also Figure 1-6 : In this embodiment, a water circulation test device for a molten salt heat absorption system of a tower-type solar thermal power station includes a base 1, a shell 2 and a steam generator 3. The shell 2 is fixedly connected to the top of the base 1, and the steam generator 3 is fixedly installed on the inner side of the shell 2. The steam generator 3 is the prior art that has been disclosed in the comparative document authorization announcement number "CN213578170U" entitled "A water circulation test device for a molten salt heat absorption system of a tower-type solar thermal power station". The steam heat source machine is a mechanical device that uses the thermal energy of fuel or other energy sources to heat water into hot water or steam, and then uses steam to drive the mechanical equipment to operate. The top of the shell 2 is provided with a heat absorber tube screen structure 5 to expand the heating area, and the outside of the shell 2 is provided with a water circulation test structure 4.

[0025] The absorber tube panel heating area expansion structure 5 includes a fixing frame 51 and a top plate 55. Multiple fixing frames 51 are fixedly installed on the top of the shell 2. Multiple fixing frames 51 are welded to the top of the shell 2. The absorber tube panel 52 is fixedly installed above the multiple fixing frames 51. The absorber tube panel 52 is mainly made of nickel-based alloy. The two ends of this material are respectively connected to the upper and lower headers of the absorber tube panel. Multiple vertical columns 53 are fixedly connected to the top of the absorber tube panel 52. The vertical columns 53 reinforce and support the heat absorbing plate 56 on the top of the absorber tube panel 52. The heat absorbing plate 56 is made of black aluminum alloy steel pipe.

[0026] The vertical area of ​​the heat absorbing plate 56 is relatively large, so that the heat absorbing plate 56 can receive more sunlight, and then the temperature of the black heat absorbing plate 56 can rise quickly, and then the heat is quickly transported along the heat conducting strip 54 to the heat absorber tube panel 52 below. The interior of the multiple vertical columns 53 is fixedly connected with the heat conducting strip 54. The heat conducting strip 54 is made of metal copper, which has good thermal conductivity and can supply additional heat to the heat absorber tube panel 52 used in the test. The top plate 55 is fixedly installed on the top of the vertical column 53. The heat absorbing plate 56 is fixedly connected above the top plate 55. The lower end of the heat absorbing plate 56 is fixedly connected to the top of the heat conducting strip 54.

[0027] The absorber tube panel 52 is welded to the top of the shell 2 through multiple fixing frames 51. The main material of the absorber tube panel 52 is nickel-based alloy. The two ends of this material are respectively connected to the upper and lower headers of the absorber tube panel. The vertical columns 53 reinforce and support the heat absorption plate 56 on the top of the absorber tube panel 52. The heat absorption plate 56 is made of black aluminum alloy steel pipe. The upright area of ​​the heat absorption plate 56 is relatively large, so that the heat absorption plate 56 can receive more sunlight, and then the temperature of the black heat absorption plate 56 can rise rapidly.

[0028] The heat is then quickly transported along the heat-conducting strips 54 to the absorber tube panel 52 below. The heat-conducting strips 54 are made of metallic copper, which has good thermal conductivity and can supply additional heat to the absorber tube panel 52 used in the test. In this way, the laboratory's proportionally scaled-down test device can also heat the circulating water, improving the test effect of the water circulation test device of the molten salt heat absorption system of the tower-type solar thermal power station.

[0029] The water circulation test structure 4 includes a cold salt tank 41 and a hot salt tank 47. The cold salt tank 41 is fixedly connected to one side of the outer wall of the shell 2, and the hot salt tank 47 is fixedly connected to the other side of the outer wall of the shell 2. The top of the cold salt tank 41 is fixedly connected to the rising pipe 42, and the top of the rising pipe 42 is fixedly connected to the inlet tank 44. The outside of the inlet tank 44 is fixedly installed with an emergency compressed gas system 43. The top of the hot salt tank 47 is fixedly connected to the downpipe 46, and the top of the downpipe 46 is fixedly connected to the outlet tank 45. The cold salt tank 41, the hot salt tank 47, the outlet tank 45, the downpipe 46, the inlet tank 44, the rising pipe 42 and the emergency compressed gas system 43 are fixedly installed. The emergency compressed gas system 43 belongs to the existing technology disclosed in the comparative documents. Through the DCS control system, the cold salt pump 71, the hot salt pump 9 and the temperature control pump 11 are electrically connected to the DCS control system respectively. The water circulation test device also includes an emergency compressed gas system 15. The emergency compressed gas system 15 is connected to the inlet tank 2. After the cold salt tank is filled with water, the DCS control system controls the cold salt pump and cooperates with the first blocking plate, the second blocking plate and the third blocking plate to make the water flow along the route of cold salt tank → cold salt pump → riser → inlet tank → absorber tube panel → outlet tank → downcomer → cold salt tank to realize the circulation test.

[0030] A detachable docking structure 6 for the heat absorber tube panel is provided on both sides of the heat absorber tube panel 52. The detachable docking structure 6 for the heat absorber tube panel includes a docking pipe 61 and a connecting seat 65. The two docking pipes 61 are fixedly connected to the two ends of the heat absorber tube panel 52. The docking pipe 61 with the heat absorber tube panel 52 inside can be installed between the connecting seats 65 on both sides. The end of the docking pipe 61 is inserted into the sealing sleeve 64 on the inner side of the connecting seat 65, and then the outer threaded sleeve 63 is manually twisted toward the end of the threaded pipe 63 to rotate and tighten it. This can improve the connection and fixation between the docking pipe 61 and the sealing sleeve 64. Conversely, the threaded sleeve 62 is twisted backward to loosen it, and the internal docking pipe 61 can be pulled out.

[0031] The butt-joint pipes 61 pulled out on both sides can be cut to separate the lower end of the absorber tube panel 52 from the fixing frame 51. Scale and impurities are cleaned by passing high-pressure water into the inner side of the absorber tube panel 52. Threaded sleeves 62 are rotatably sleeved on the outer sides of the two butt-joint pipes 61. Two connecting seats 65 are fixedly connected to the two ends of the outlet tank 45 and the inlet tank 44. The inner sides of the two connecting seats 65 are fixedly connected to sealing sleeves 64. The sealing sleeves 64 are made of stainless steel pipes with rubber rings on the ends. The rubber rings are relatively high-temperature resistant on the outer sides. The outer front ends of the two sealing sleeves 64 are fixedly connected to threaded pipes 63. The ends of the two butt-joint pipes 61 are movably inserted into the inner sides of the sealing sleeves 64. The inner sides of the two threaded sleeves 62 are threadedly connected to the outer walls of the threaded pipes 63.

[0032] The inner absorber tube panel 52 can be installed between the connecting seats 65 on both sides through the butt joint 61, and the end of the butt joint 61 is inserted into the sealing sleeve 64 on the inner side of the connecting seat 65, and then the outer threaded sleeve 63 is manually twisted toward the end of the threaded tube 63 to rotate and tighten, so as to improve the connection and fixation between the butt joint 61 and the sealing sleeve 64. Conversely, the threaded sleeve 62 is twisted backward to loosen it, and the inner butt joint 61 can be pulled out. The butt joints 61 pulled out on both sides can be used to cut the lower end of the absorber tube panel 52 from the fixing frame 51 by cutting, and the scale and impurities are cleaned by passing high-pressure water flow into the inside of the absorber tube panel 52. This can effectively clean the inside of the curved and coiled absorber tube panel 52 and reduce blockage, thereby improving the utilization efficiency of the water circulation test device of the molten salt heat absorption system of the tower-type solar thermal power station.

[0033] Working principle:

[0034] The working process of the water circulation test device of the molten salt heat absorption system of the tower-type solar thermal power station, the cold salt tank 41, the hot salt tank 47, the outlet tank 45, the downcomer 46, the inlet tank 44, the riser 42 and the emergency compressed gas system 43 all belong to the existing technology disclosed in the comparative document. Through the DCS control system, the cold salt pump, the hot salt pump and the temperature regulating pump are electrically connected to the DCS control system respectively. The water circulation test device also includes an emergency compressed gas system, which is connected to the inlet tank. After the cold salt tank is filled with water, the DCS control system controls the cold salt pump and cooperates with the first blocking plate, the second blocking plate and the third blocking plate to make the water flow along the route of cold salt tank → cold salt pump → riser → inlet tank → absorber tube panel → outlet tank → downcomer → cold salt tank to realize the circulation test;

[0035] Additional heating structure of the water circulation test device of the molten salt heat absorption system of the tower-type solar thermal power station:

[0036] The absorber tube panel 52 is mainly made of nickel-based alloy and its two ends are respectively connected to the upper and lower headers of the absorber tube panel. The vertical column 53 reinforces and supports the heat absorbing plate 56 at the top of the absorber tube panel 52. The heat absorbing plate 56 is made of black aluminum alloy steel pipe. The vertical area of ​​the heat absorbing plate 56 is relatively large, so that the heat absorbing plate 56 can receive more sunlight. Then, the temperature of the black heat absorbing plate 56 can rise quickly, and then the heat is quickly transferred to the absorber tube panel 52 below along the heat conducting strip 54. The heat conducting strip 54 is made of metal copper, which has good thermal conductivity and can supply additional heat to the absorber tube panel 52 used in the test. In this way, a laboratory scaled-down test device can also heat circulating water.

[0037] Water circulation test device for the molten salt heat absorption system of a tower-type solar thermal power station

[0038] The heat absorber tube panel 52 inside can be installed between the connecting seats 65 on both sides through the butt joint pipe 61, and the end of the butt joint pipe 61 is inserted into the sealing sleeve 64 inside the connecting seat 65, and then the outer threaded sleeve 63 is manually twisted toward the end of the threaded pipe 63 to rotate and tighten, so as to improve the connection and fixation between the butt joint pipe 61 and the sealing sleeve 64. Conversely, the threaded sleeve 62 is twisted backward to loosen it, and the inner butt joint pipe 61 can be pulled out. The butt joint pipes 61 pulled out on both sides can be cut to separate the lower end of the heat absorber tube panel 52 from the fixing frame 51. By passing high-pressure water flow into the inside of the heat absorber tube panel 52 to clean scale and impurities, the inside of the curved and coiled heat absorber tube panel 52 can be effectively cleaned to reduce blockage.

[0039] Example 2:

[0040] See also Figure 1-6: In this embodiment, a water circulation test device for the molten salt heat absorption system of a tower-type solar thermal power station also includes a water circulation test control structure 7 provided on the outside of a cold salt tank 41. The water circulation test control structure 7 includes a cold salt pump 71 and a blocking plate 74. The cold salt pump 71 is fixedly installed at one end of the cold salt tank 41. The cold salt pump 71 is connected to the riser 42. A thermostatic pump 72 is fixedly connected to one side of the outer wall of the cold salt tank 41. The thermostatic pump 72 is connected to the steam generator 3. The thermostatic pump 72, the cold salt pump 71 and the blocking plate 74 also belong to the prior art disclosed in the comparative document. A filter with a pore size of 2 mm is installed at the outlet of the inlet tank. The inlet of the cold salt pump A filter with an aperture of 5 mm is installed at the mouth, a first plugging plate is provided on the downcomer, a second plugging plate is provided on the pipe between the hot salt pump and the steam generator, and a third plugging plate is provided on the pipe between the thermostatic pump and the steam generator. The first plugging plate, the second plugging plate and the third plugging plate are all detachable plugging plates. A balancing pipe valve 73 is fixedly connected between the cold salt pump 71 and the hot salt tank 47. The balancing pipe valve 73 is connected to the hot salt tank 47 and the cold salt tank 41 on both sides through the valve, which is convenient for opening the balancing pipe valve 73 to release the pressure of the molten salt tanks on both sides in an emergency. The plugging plate 74 is movably installed between the downcomer 46 and the hot salt tank 47 and the hot salt tank 47 and the steam generator 3.

[0041] Working principle:

[0042] The temperature control pump 72, the cold salt pump 71 and the plug 74 also belong to the existing technology disclosed in the comparative documents. A filter screen with a pore size of 2 mm is installed at the outlet of the inlet tank, and a filter screen with a pore size of 5 mm is installed at the inlet of the cold salt pump. A first plugging plate is provided on the downcomer, a second plugging plate is provided on the pipe between the hot salt pump and the steam generator, and a third plugging plate is provided on the pipe between the temperature control pump and the steam generator. The first plugging plate, the second plugging plate and the third plugging plate are all detachable plugging plates. The balancing pipe valve 73 connects the hot salt tank 47 and the cold salt tank 41 on both sides through a valve, which is convenient for opening the balancing pipe valve 73 to release the pressure of the molten salt tanks on both sides in an emergency.

[0043] While the present invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A water circulation test device for a molten salt heat absorption system of a tower-type solar thermal power station, comprising a base (1), a shell (2) and a steam generator (3), wherein the shell (2) is fixedly connected to the top of the base (1), and the steam generator (3) is fixedly installed on the inner side of the shell (2), characterized in that: A heat absorber tube panel structure (5) for expanding the heating area is provided at the top of the shell (2), and a water circulation test structure (4) is provided on the outside of the shell (2).

2. A water circulation test device for a molten salt heat absorption system of a tower-type solar thermal power station according to claim 1, characterized in that: The heat absorber tube panel heating area enlargement structure (5) includes a fixing frame (51) and a top plate (55), a plurality of the fixing frames (51) are fixedly mounted on the top of the shell (2), a heat absorber tube panel (52) is fixedly mounted above the plurality of the fixing frames (51), a plurality of vertical columns (53) are fixedly connected to the top of the heat absorber tube panel (52), a plurality of heat conducting strips (54) are fixedly connected inside the plurality of vertical columns (53), the top plate (55) is fixedly mounted on the top of the vertical columns (53), a heat absorbing plate (56) is fixedly connected above the top plate (55), and the lower end of the heat absorbing plate (56) is fixedly connected to the top of the heat conducting strip (54).

3. The water circulation test device for the molten salt heat absorption system of a tower-type solar thermal power station according to claim 1, characterized in that: The water circulation test structure (4) includes a cold salt tank (41) and a hot salt tank (47), wherein the cold salt tank (41) is fixedly connected to one side of the outer wall of the shell (2), and the hot salt tank (47) is fixedly connected to the other side of the outer wall of the shell (2). The top of the cold salt tank (41) is fixedly connected to a rising pipe (42), the top of the rising pipe (42) is fixedly connected to an inlet tank (44), and an emergency compressed gas system (43) is fixedly installed on the outside of the inlet tank (44). The top of the hot salt tank (47) is fixedly connected to a downpipe (46), and the top of the downpipe (46) is fixedly connected to an outlet tank (45).

4. A water circulation test device for a molten salt heat absorption system of a tower-type solar thermal power station according to claim 2, characterized in that: A detachable heat absorber tube panel docking structure (6) is provided on both sides of the heat absorber tube panel (52). The detachable heat absorber tube panel docking structure (6) includes a docking tube (61) and a connecting seat (65). The two docking tubes (61) are fixedly connected to the two ends of the heat absorber tube panel (52). The outer sides of the two docking tubes (61) are rotatably sleeved with threaded sleeves (62). The two connecting seats (65) are fixedly connected to the two ends of the outlet tank (45) and the inlet tank (44). The inner sides of the two connecting seats (65) are fixedly connected with sealing sleeves (64). The outer front ends of the two sealing sleeves (64) are fixedly connected with threaded tubes (63).

5. A water circulation test device for a molten salt heat absorption system of a tower-type solar thermal power station according to claim 4, characterized in that: The ends of the two butt-jointed pipes (61) are movably plugged into the inner side of the sealing sleeve (64), and the inner sides of the two threaded sleeves (62) are threadably connected to the outer wall of the threaded pipe (63).

6. The water circulation test device for the molten salt heat absorption system of a tower-type solar thermal power station according to claim 3, characterized in that: A water circulation test control structure (7) is provided on the outside of the cold salt tank (41), and the water circulation test control structure (7) includes a cold salt pump (71) and a blocking plate (74). The cold salt pump (71) is fixedly installed at one end of the cold salt tank (41), and the cold salt pump (71) is connected to the riser (42). A temperature regulating pump (72) is fixedly connected to one side of the outer wall of the cold salt tank (41), and the temperature regulating pump (72) is connected to the steam generator (3). A balancing pipe valve (73) is fixedly connected between the cold salt pump (71) and the hot salt tank (47), and the blocking plate (74) is movably installed between the downcomer (46) and the hot salt tank (47), and between the hot salt tank (47) and the steam generator (3).

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