Axial ventilation cooling system for rotor winding of photo-thermal unit

Abstract

The invention belongs to the technical field of photo-thermal unit cooling systems, and discloses a photo-thermal unit rotor winding axial ventilation cooling system which comprises a protection box, the front end of the protection box fixedly communicates with an air inlet tank, and air inlet grooves are axially formed in the outer side face of the air inlet tank at equal intervals. And exhaust grooves are formed in the sides, close to the air inlet tank, of the upper end and the lower end of the protection box correspondingly, a main shaft is movably connected to the middle of the air inlet tank, and the right end of the main shaft is located in the protection box. The self-rotation of the rotor during working is utilized to act on the main bevel gear and the auxiliary bevel gear, so that forced suction of external air can be realized, forced export of air after heat exchange can be realized, the whole process can be automatically completed, a heat dissipation process can be forcibly realized without special design of an air duct, forced heat dissipation is realized through active air convection, and the heat dissipation efficiency is improved. The problem that the ventilation effect is poor due to a traditional passive air inlet mode is solved, and the ventilation effect is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cooling systems for solar thermal power plants, and in particular relates to an axial ventilation cooling system for rotor windings of solar thermal power plants. Background Art

[0002] The rotor winding of a solar thermal unit is an important part of the motor in a solar thermal power generation system. It is responsible for directing current into the rotor and realizing the conversion and transmission of electrical energy through the principle of electromagnetic induction. When the stator winding of the motor is energized to generate a magnetic field, the stator magnetic field will be transmitted to the rotor. Through the conductive coils in the rotor winding, the current can flow inside the rotor, thereby generating electromagnetic torque and driving the movement of the mechanical device. However, a large amount of heat will be generated during its normal operation. If it is not dissipated, its power generation efficiency will be affected.

[0003] The conventional axial ventilation cooling system for rotor windings is mainly composed of an external protective box, a main shaft installed on the drive shaft, and a cooling fan. The main ventilation principle is to drive the main shaft to rotate by the rotation of the rotor, and to realize air intake through the external air inlet channel, and then drive the cooling fan to rotate through the main shaft to realize exhaust and complete air convection. However, this heat dissipation method requires strict design of the air duct to ensure the heat dissipation effect. At the same time, the ventilation effect is poor due to the lack of active convection.

[0004] At the same time, cooling is only carried out by air convection, which relies on the flow of air to carry away heat, but cannot directly contact the outer casing of the unit, resulting in the inability to directly transfer heat. Effective cooling can only be achieved in a better ventilation environment, and improvement is urgently needed. Summary of the invention

[0005] The object of the present invention is to provide an axial ventilation cooling system for a rotor winding of a solar thermal power plant to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an axial ventilation cooling system for a solar thermal unit rotor winding, comprising a protective box, a front end of the protective box being fixedly connected to an air inlet tank, an outer side surface of the air inlet tank being axially provided with air inlet grooves at equal intervals, exhaust grooves being provided at the upper and lower ends of the protective box and at a side close to the air inlet tank, a main shaft being movably connected to the middle of the air inlet tank, the right end of the main shaft being located inside the protective box, cooling boxes being installed at the upper and lower ends of the inner cavity of the protective box, circulation components being provided at the relatively distant ends of the two cooling boxes, a main bevel gear being fixedly sleeved at one end of the outer side surface of the main shaft close to the air inlet tank, auxiliary bevel gears being meshed and connected to the upper and lower ends of the main bevel gear, the upper and lower auxiliary bevel gears being perpendicular to the main bevel gear, the interior of the cooling box being filled with coolant, and the right end of the main shaft being connected to the rotating part of the rotor.

[0007] As a further technical solution of the present invention, the two auxiliary bevel gears are fixedly sleeved with a power shaft on one side that is relatively far away from each other, and the outer side of the power shaft is movably sleeved with a locking frame, and the other side of the locking frame is connected to the rear end of the air inlet tank.

[0008] Before using the device, the protective box needs to be installed on the outer side of the unit, and the cooling box needs to be in contact with the outer casing of the unit to ensure that the heat source can be transmitted normally. At the same time, the main shaft needs to be connected to the rotating part of the rotor of the unit to ensure power transmission, and the outer sides of the air inlet and exhaust slots must be kept unobstructed, and the outer side of the air inlet slot must be unblocked to complete the preparations before ventilation and cooling.

[0009] As a further technical solution of the present invention, the outer side surface of the main shaft is fixedly sleeved with an inlet fan located inside the air inlet tank, the inlet fan is located on the inner side surface of the air inlet groove, and the top end of the outer side surface of the power shaft is fixedly sleeved with an exhaust fan located directly below the exhaust groove.

[0010] During normal ventilation and cooling, the startup of the solar thermal unit can drive the rotor winding to rotate, and at the same time, the main shaft can be driven to rotate through the rotor rotating part, which can synchronously drive the main bevel gear to rotate. At this time, the air intake fan located in front of the main bevel gear rotates accordingly, and the external air can be actively sucked into the air intake tank through the air intake slot, and at the same time enter the protection box. At this time, the incoming air can contact the rotor winding and take away the surface heat;

[0011] At the same time, when the main bevel gear rotates, it can drive the upper and lower auxiliary bevel gears to rotate at the same time. At this time, the upper and lower auxiliary bevel gears can complete the rotation reversal and drive the upper and lower exhaust fans to rotate, actively discharge the hot air through the air inlet slot, and complete the ventilation process.

[0012] By utilizing the self-rotation of the rotor when it is working, it acts on the main bevel gear and the auxiliary bevel gear, so that the external air can be forced to be inhaled and the air after heat exchange can be forced to be discharged. The whole process can be completed automatically without special design of the air duct. The heat dissipation process can be forced to be realized. Forced heat dissipation is achieved through active air convection, avoiding the problem of poor ventilation effect caused by traditional reliance on passive air intake, thereby improving the ventilation effect.

[0013] As a further technical solution of the present invention, a mounting shaft is installed on one end of the two power shafts that is relatively far away, the outer side surface of the mounting shaft is fixedly sleeved with the circulation component, one side of the circulation component is connected with the middle of the cooling box, and a fixing frame is fixedly installed on one side of the two cooling boxes that is relatively far away, and the fixing frame is fixedly sleeved with the circulation component.

[0014] As a further technical solution of the present invention, the circulation component includes a circulation pipe, the outer side surface of the circulation pipe is fixedly connected to the fixed frame, the bottom end of the circulation pipe near the right side is fixedly connected to an infusion pipe, and the infusion pipe is connected to the cooling box.

[0015] As a further technical solution of the present invention, the circulation pipe is movably sleeved with a piston plate, the left side of the piston plate is fixedly connected to a piston rod located inside the circulation pipe, and the left end of the piston rod passes through the left end of the circulation pipe and is fixedly connected to a mounting seat.

[0016] As a further technical solution of the present invention, one end of the mounting seat away from the piston rod is movably connected to a first connecting rod via a rotating shaft, one end of the first connecting rod away from the mounting seat is movably connected to a second connecting rod via a rotating shaft, and one end of the second connecting rod away from the first connecting rod is fixedly sleeved on the outer side surface of the mounting shaft.

[0017] As a further technical solution of the present invention, when the second connecting rod is located at the leftmost position, the distance between the piston plate and the input end of the infusion tube is maximum, and when the second connecting rod is located at the rightmost position, the distance between the piston plate and the input end of the infusion tube is minimum.

[0018] When the solar thermal unit is working normally, the heat generated can be absorbed by the air entering the protective box, while the heat on its outer surface can directly contact the cooling box, at which time it can exchange heat with the coolant inside the cooling box, further taking away the heat generated by the unit during operation.

[0019] At the same time, when the secondary bevel gear rotates, the power shaft and the mounting shaft can be driven to rotate synchronously. At this time, the second connecting rod rotates accordingly, and drives the first connecting rod to swing, and drives the piston rod to move. With the continuous rotation of the second connecting rod, a pulling force to the left and a pushing force to the right can be applied to the piston plate. When the piston plate moves to the left, a negative pressure can be generated inside the circulation pipe to suck the coolant inside the cooling box into the circulation pipe. When the piston plate moves to the right, the coolant inside the circulation pipe can be discharged through the infusion pipe and flow back to the inside of the cooling box. The above process is repeated to realize the circulation of the coolant in the circulation pipe and the cooling box. At the same time, the coolant inside the cooling box can be forced to cool through the exhaust fan above, further reducing the temperature of the unit and completing the cooling.

[0020] By utilizing the power used for forced ventilation, the coolant absorbs heat from the unit, and the circulation components are used to realize forced circulation of the coolant. At the same time, the coolant is forced to be cooled by the exhaust fan used for air cooling, thereby realizing the coordinated work of forced ventilation and forced liquid cooling, taking away the heat from the unit in all directions, avoiding the problem that traditional devices only rely on air convection and have high requirements for the ventilation environment, and realizing forced cooling in harsh environments and improving the cooling effect.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The present invention utilizes the self-rotation of the rotor during operation to act on the main bevel gear and the auxiliary bevel gear, so that the external air can be forced to be sucked in and the air after heat exchange can be forced to be discharged. The whole process can be completed automatically without the need for special design of the air duct. The heat dissipation process can be forced to be realized. The forced heat dissipation is realized through active air convection, avoiding the problem of poor ventilation effect caused by the traditional passive air intake method, and improving the ventilation effect.

[0023] 2. The present invention utilizes the power used for forced ventilation, absorbs heat from the unit through the coolant, and realizes forced circulation of the coolant in cooperation with the circulation component. At the same time, the coolant is forced to be cooled by the exhaust fan used for air cooling, thereby realizing the coordinated work of forced ventilation and forced liquid cooling, taking away the heat from the unit in all directions, avoiding the problem that traditional devices only rely on air convection and have high requirements for the ventilation environment, and can realize forced cooling in harsh environments and improve the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a cross-sectional schematic diagram of the internal structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the present invention in a state where the protection box and the air inlet tank are hidden;

[0027] Figure 4 It is a schematic diagram of the coordination of the main bevel gear and the upper and lower auxiliary bevel gear structures of the present invention;

[0028] Figure 5 It is a schematic diagram of the coordination of the cooling box and the circulation assembly structure of the present invention;

[0029] Figure 6 It is a schematic diagram of the coordination between the auxiliary bevel gear and the exhaust fan structure of the present invention;

[0030] Figure 7 It is a cross-sectional schematic diagram of the internal structure of the cooling box and circulation component of the present invention.

[0031] In the figure: 1. protective box; 2. air inlet tank; 3. air inlet slot; 4. exhaust slot; 5. locking frame; 6. main shaft; 7. air inlet fan; 8. main bevel gear; 9. secondary bevel gear; 10. power shaft; 11. exhaust fan; 12. cooling box; 13. mounting shaft; 14. circulation assembly; 141. circulation pipe; 142. infusion pipe; 143. piston plate; 144. piston rod; 145. mounting seat; 146. first connecting rod; 147. second connecting rod; 15. fixing frame. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 7 As shown, in the embodiment of the present invention, the axial ventilation cooling system of the rotor winding of the solar thermal unit includes a protection box 1, the front end of the protection box 1 is fixedly connected to an air inlet tank 2, the outer side surface of the air inlet tank 2 is axially provided with air inlet grooves 3 at equal intervals, the upper and lower ends of the protection box 1 and the side close to the air inlet tank 2 are provided with exhaust grooves 4, the middle part of the air inlet tank 2 is movably connected with a main shaft 6, the right end of the main shaft 6 is located inside the protection box 1, the upper and lower ends of the inner cavity of the protection box 1 are installed with cooling boxes 12, and the ends of the two cooling boxes 12 that are relatively far away are provided with circulation Component 14, a main bevel gear 8 is fixedly sleeved on one end of the outer side of the main shaft 6 close to the air inlet tank 2, and the upper and lower ends of the main bevel gear 8 are meshed and connected with auxiliary bevel gears 9, and the upper and lower auxiliary bevel gears 9 are perpendicular to the main bevel gear 8. The interior of the cooling box 12 is filled with coolant, and the right end of the main shaft 6 is connected to the rotor rotating part. The two auxiliary bevel gears 9 are fixedly sleeved on the side relatively away from each other with a power shaft 10, and the outer side of the power shaft 10 is movably sleeved with a locking frame 5, and the other side of the locking frame 5 is connected to the rear end of the air inlet tank 2.

[0034] Before using the device, the protective box 1 needs to be installed on the outer side of the unit, and the cooling box 12 needs to be in contact with the outer casing of the unit to ensure that the heat source can be transmitted normally. At the same time, the main shaft 6 needs to be connected to the rotating part of the rotor of the unit to ensure power transmission, and the outer sides of the air inlet slot 3 and the air exhaust slot 4 need to be kept unobstructed, and the outer side of the air inlet slot 3 needs to be unblocked to complete the preparations before ventilation and cooling.

[0035] like Figure 2 and Figure 3 as well as Figure 4As shown, the outer side surface of the main shaft 6 is fixedly sleeved with an inlet fan 7 located inside the air inlet tank 2, the inlet fan 7 is located on the inner side surface of the air inlet slot 3, and the top end of the outer side surface of the power shaft 10 is fixedly sleeved with an exhaust fan 11 located directly below the exhaust slot 4.

[0036] Embodiment: During normal ventilation and cooling, the start-up of the solar thermal unit can drive the rotor winding to rotate, and at the same time, the main shaft 6 can be driven to rotate through the rotor rotating part, and the main bevel gear 8 can be synchronously driven to rotate. At this time, the air intake fan 7 located in front of the main bevel gear 8 rotates accordingly, and the external air can be actively sucked into the interior of the air intake tank 2 through the air intake slot 3, and at the same time enter the interior of the protective box 1. At this time, the incoming air can contact between the rotor windings and take away the surface heat;

[0037] At the same time, when the main bevel gear 8 rotates, the upper and lower auxiliary bevel gears 9 can be driven to rotate at the same time. At this time, the upper and lower auxiliary bevel gears 9 can complete the rotation reversal and drive the upper and lower exhaust fans 11 to rotate, actively exhausting the hot air through the air inlet slot 3 to complete the ventilation process.

[0038] By utilizing the self-rotation of the rotor when it is working, it acts on the main bevel gear 8 and the auxiliary bevel gear 9, so that the external air can be forced to be sucked in and the air after heat exchange can be forced to be discharged. The whole process can be completed automatically without special design of the air duct. The heat dissipation process can be forced to be realized. Forced heat dissipation is achieved through active air convection, avoiding the problem of poor ventilation effect caused by traditional reliance on passive air intake, thereby improving the ventilation effect.

[0039] like Figure 2 and Figure 3 as well as Figure 5 and Figure 7As shown, the ends of the two power shafts 10 that are relatively far away are both equipped with mounting shafts 13, the outer side of the mounting shaft 13 is fixedly sleeved with the circulation assembly 14, one side of the circulation assembly 14 is connected to the middle of the cooling box 12, and the two cooling boxes 12 are fixedly installed with a fixing frame 15 on the side that is relatively far away, and the fixing frame 15 is fixedly sleeved with the circulation assembly 14, and the circulation assembly 14 includes a circulation pipe 141, and the outer side of the circulation pipe 141 is fixedly sleeved with the fixing frame 15, and the bottom end of the circulation pipe 141 near the right side is fixedly connected with an infusion pipe 142, and the infusion pipe 142 is connected to the cooling box 12, and the inside of the circulation pipe 141 is movably sleeved with a piston plate 143, and the left side of the piston plate 143 is fixedly connected with a position The piston rod 144 is inside the circulation tube 141, and the left end of the piston rod 144 passes through the left end of the circulation tube 141 and is fixedly connected to the mounting seat 145. The end of the mounting seat 145 away from the piston rod 144 is movably connected to the first connecting rod 146 through a rotating shaft, and the end of the first connecting rod 146 away from the mounting seat 145 is movably connected to the second connecting rod 147 through a rotating shaft. The end of the second connecting rod 147 away from the first connecting rod 146 is fixedly sleeved with the outer side surface of the mounting shaft 13. When the second connecting rod 147 is located at the far left, the distance between the piston plate 143 and the input end of the infusion tube 142 is the maximum value. When the second connecting rod 147 is located at the far right, the distance between the piston plate 143 and the input end of the infusion tube 142 is the minimum value.

[0040] When the solar thermal unit is working normally, the heat generated can be absorbed by the air entering the protection box 1, and the heat on its outer surface can directly contact the cooling box 12, at which time it can exchange heat with the coolant inside the cooling box 12, further taking away the heat generated by the unit during operation.

[0041] Embodiment: When the secondary bevel gear 9 rotates, the power shaft 10 and the mounting shaft 13 can be driven to rotate synchronously. At this time, the second connecting rod 147 rotates accordingly, and drives the first connecting rod 146 to swing, and drives the piston rod 144 to move. With the continuous rotation of the second connecting rod 147, a pulling force to the left and a pushing force to the right can be applied to the piston plate 143. When the piston plate 143 is displaced to the left, a negative pressure can be generated inside the circulation pipe 141 to suck the coolant inside the cooling box 12 into the circulation pipe 141. When the piston plate 143 is displaced to the right, the coolant inside the circulation pipe 141 can be discharged through the infusion pipe 142 and refluxed to the cooling box 12. The above process can be repeated to realize the circulation of the coolant in the circulation pipe 141 and the cooling box 12. At the same time, the coolant inside the cooling box 12 can be forced to cool through the exhaust fan 11 above, so as to further reduce the temperature of the unit and complete the cooling.

[0042] By utilizing the power used for forced ventilation, the coolant absorbs heat from the unit, and the circulation component 14 cooperates to realize forced circulation of the coolant. At the same time, the coolant is forced to be cooled by the exhaust fan 11 used for air cooling, thereby realizing the coordinated work of forced ventilation and forced liquid cooling, taking away the heat from the unit in all directions, avoiding the problem that traditional devices only rely on air convection and have high requirements for the ventilation environment, and can realize forced cooling in harsh environments and improve the cooling effect.

[0043] Working principle and usage process:

[0044] Before using the device, the protection box 1 needs to be installed on the outer side of the unit, and the cooling box 12 needs to be in contact with the outer shell of the unit to ensure that the heat source can be normally transmitted. At the same time, the main shaft 6 needs to be connected to the rotor rotating part of the unit to ensure power transmission, and the outer sides of the air inlet slot 3 and the air exhaust slot 4 need to be kept unobstructed, and the outer side of the air inlet slot 3 needs to be unobstructed to complete the preparation before ventilation and cooling;

[0045] During normal ventilation and cooling, the start-up of the solar thermal unit can drive the rotor winding to rotate, and at the same time, the main shaft 6 can be driven to rotate through the rotor rotating part, and the main bevel gear 8 can be driven to rotate synchronously. At this time, the air intake fan 7 located in front of the main bevel gear 8 rotates accordingly, and the external air can be actively sucked into the interior of the air intake tank 2 through the air intake slot 3, and at the same time enter the interior of the protective box 1. At this time, the incoming air can contact between the rotor windings and take away the surface heat;

[0046] At the same time, when the main bevel gear 8 rotates, it can simultaneously drive the upper and lower auxiliary bevel gears 9 to rotate. At this time, the upper and lower auxiliary bevel gears 9 can complete the rotation reversal and drive the upper and lower exhaust fans 11 to rotate, actively exhausting the hot air through the air inlet slot 3 to complete the ventilation process;

[0047] When the solar thermal unit is working normally, the heat generated can be absorbed by the air entering the protection box 1, and the heat on its outer surface can directly contact the cooling box 12, at which time it can exchange heat with the coolant inside the cooling box 12, further taking away the heat generated by the unit during operation.

[0048] At the same time, when the secondary bevel gear 9 rotates, the power shaft 10 and the mounting shaft 13 can be driven to rotate synchronously. At this time, the second connecting rod 147 rotates accordingly, and drives the first connecting rod 146 to swing, and drives the piston rod 144 to move. With the continuous rotation of the second connecting rod 147, a pulling force to the left and a pushing force to the right can be applied to the piston plate 143. When the piston plate 143 is displaced to the left, a negative pressure can be generated inside the circulation pipe 141 to suck the coolant located inside the cooling box 12 into the circulation pipe 141. When the piston plate 143 is displaced to the right, the coolant located inside the circulation pipe 141 can be discharged through the infusion pipe 142 and refluxed to the cooling box 12. Repeating the above process can realize the circulation of the coolant in the circulation pipe 141 and the cooling box 12. At the same time, the coolant located inside the cooling box 12 can be forced to cool through the exhaust fan 11 above, further reducing the temperature of the unit and completing the cooling.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A system for axial ventilation cooling of a rotor winding of a solar thermal power plant, comprising a protection box (1), characterized in that: The front end of the protection box (1) is fixedly connected to an air inlet tank (2), and the outer side surface of the air inlet tank (2) is axially provided with air inlet grooves (3) at equal intervals. The upper and lower ends of the protection box (1) and the side close to the air inlet tank (2) are provided with exhaust grooves (4). The middle part of the air inlet tank (2) is movably connected with a main shaft (6), and the right end of the main shaft (6) is located inside the protection box (1). Cooling boxes (12) are installed at the upper and lower ends of the inner cavity of the protection box (1), and the two ends of the cooling boxes (12) that are relatively far away are provided with circulation components (14). The end of the outer side surface of the main shaft (6) close to the air inlet tank (2) is fixedly sleeved with a main bevel gear (8), and the upper and lower ends of the main bevel gear (8) are meshed and connected with auxiliary bevel gears (9), and the upper and lower auxiliary bevel gears (9) are perpendicular to the main bevel gear (8). The interior of the cooling box (12) is filled with coolant, and the right end of the main shaft (6) is connected to the rotor rotating part.

2. The axial ventilation cooling system for the rotor winding of a solar thermal power plant according to claim 1 is characterized in that: A power shaft (10) is fixedly sleeved on one side of the two auxiliary bevel gears (9) that are relatively far away from each other, and a locking frame (5) is movably sleeved on the outer side of the power shaft (10), and the other side of the locking frame (5) is connected to the rear end of the air inlet tank (2).

3. The axial ventilation cooling system for the rotor winding of a solar thermal power plant according to claim 2 is characterized in that: The outer side surface of the main shaft (6) is fixedly sleeved with an inlet fan (7) located inside the air inlet tank (2), and the inlet fan (7) is located on the inner side surface of the air inlet slot (3). The top end of the outer side surface of the power shaft (10) is fixedly sleeved with an exhaust fan (11) located directly below the exhaust slot (4).

4. The axial ventilation cooling system for the rotor winding of a solar thermal power plant according to claim 3 is characterized in that: A mounting shaft (13) is installed at one end of the two power shafts (10) that is relatively far away from each other, and the outer side surface of the mounting shaft (13) is fixedly sleeved with a circulation component (14). One side of the circulation component (14) is connected to the middle of the cooling box (12), and a fixing frame (15) is fixedly installed at one end of the two cooling boxes (12) that is relatively far away from each other, and the fixing frame (15) is fixedly sleeved with the circulation component (14).

5. The axial ventilation cooling system for the rotor winding of a solar thermal power plant according to claim 4 is characterized in that: The circulation assembly (14) comprises a circulation tube (141), the outer side surface of the circulation tube (141) is fixedly sleeved with the fixing frame (15), the bottom end of the circulation tube (141) close to the right side is fixedly connected with a liquid infusion tube (142), and the liquid infusion tube (142) is connected with the cooling box (12).

6. The axial ventilation cooling system for the rotor winding of a solar thermal power plant according to claim 5 is characterized in that: The circulation pipe (141) is movably sleeved with a piston plate (143), the left side of the piston plate (143) is fixedly connected with a piston rod (144) located inside the circulation pipe (141), and the left end of the piston rod (144) passes through the left end of the circulation pipe (141) and is fixedly connected with a mounting seat (145).

7. The axial ventilation cooling system for the rotor winding of a solar thermal power plant according to claim 6 is characterized in that: One end of the mounting seat (145) away from the piston rod (144) is movably connected to the first connecting rod (146) via a rotating shaft, and one end of the first connecting rod (146) away from the mounting seat (145) is movably connected to the second connecting rod (147) via a rotating shaft, and one end of the second connecting rod (147) away from the first connecting rod (146) is fixedly sleeved with the outer side surface of the mounting shaft (13).

8. The axial ventilation cooling system for the rotor winding of a CSP unit according to claim 7 is characterized in that: When the second connecting rod (147) is located at the far left, the distance between the piston plate (143) and the input end of the infusion tube (142) is at a maximum value; when the second connecting rod (147) is located at the far right, the distance between the piston plate (143) and the input end of the infusion tube (142) is at a minimum value.

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