Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
  • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
  • F03G6/00—Devices for producing mechanical power from solar energy
  • F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
  • F03G6/062—Parabolic point or dish concentrators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
  • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
  • F03G6/00—Devices for producing mechanical power from solar energy
  • F03G6/121—Controlling or monitoring
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
  • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
  • F24S23/75—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with conical reflective surfaces
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S30/00—Arrangements for moving or orienting solar heat collector modules
  • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
  • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
  • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
  • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/40—Solar thermal energy, e.g. solar towers
  • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/40—Solar thermal energy, e.g. solar towers
  • Y02E10/47—Mountings or tracking

Definitions

• Dish concentrator and solar thermal power generation system including the concentrator
• the present invention relates to the field of solar energy utilization, and more particularly to a dish concentrator and a solar thermal power generation system including the concentrator.
• the dish type solar thermal power generation system is mainly composed of a dish concentrator, an engine (a steam turbine, a gas turbine, a Stirling engine), a tracking control system, and the like.
• the dish concentrator is composed of a column, a disc holder, and a plurality of mirrors fixed in different sizes on the disc holder. After the disc concentrator is set up, the mirror is not moved relative to the disc frame, the focusing energy is not adjustable, and the focusing energy is not adjustable, which brings great technical difficulties to the debugging and operation of the whole system. For example: In the initial stage of the deployment of the dish-type solar thermal power system, the heat engine system has not been running stably, and the required energy needs to be changed.
• the dish concentrator inputs energy to the heat collector of the heat engine with a fixed energy, and the heat collector of the heat engine does not have. Prolonging the heat away will cause the collector to heat up or even burn out; when the heat engine fails or leaves the normal working point, the energy required by the heat engine also needs to change, otherwise the heat collector of the heat engine will be burned; when the heat engine is in normal operation,
• the dish concentrator will differ in the intensity of the morning and noon of the sun. The difference in the energy of the focus is large, and the power difference of the output of the heat engine system is also large, which causes the heat engine system to deviate too far from the optimal working point and the efficiency is greatly reduced.
• the focusing energy of the existing dish concentrator is not adjustable, and due to the unadjustable focus energy, it brings great technical difficulties to the debugging and operation of the system using the dish concentrator.
• the present invention provides a dish concentrator including a rotating mirror to realize adjustable control of the concentrated energy of the dish concentrator; the present invention also provides a dish including the above disc concentrator Solar thermal power generation system.
• the present invention provides the following technical solutions:
• a disc concentrator comprising a disc post and a disc holder, the disc concentrator further comprising: a rotating shaft disposed at both ends on the disc frame and rotatably connected to the disc rack;
• a rotating mirror disposed on a side of the rotating shaft and fixedly coupled to the rotating shaft; a power driving device disposed on the disc frame or the rotating mirror backlight surface to drive the rotating mirror to rotate;
• a control system coupled to the power drive to control the operational state of the power drive.
• At least two rotating shaft supports are disposed between the disc frame and the rotating mirror, each of the rotating shaft supports is provided with a through hole, and the rotating shaft passes through the through hole and the rotating shaft
• the seat has an interference fit, and the positions of the at least two shaft bearings are symmetric with the center line of the rotating mirror, and the center of gravity of the rotating mirror falls to the left side of the shaft bearing.
• the dish concentrator further comprises:
• a rotation limiting plate disposed on the disc frame to prevent the rotating mirror from rotating excessively and causing damage to the rotating mirror
• a reset plate disposed on the disc frame and having the same position as a normal working position of the rotating mirror, wherein a normal working position of the rotating mirror is that the reflected light of the rotating mirror is focused on the disc The position at which the rotating mirror is located when the working object of the concentrator.
• the rotation limiting plate and the reset plate are respectively provided with sensing elements, and the feeling
• the control unit is connected to the control system, the power driving device is disposed on the disc frame, the power driving device rotates the rotating shaft through a power transmission element, and the rotating shaft drives the rotating mirror to rotate, the control The system controls the operating state of the power drive device based on information transmitted by the sensing element of the rotation limiting plate and the sensing element of the reset plate.
• a return spring is further disposed between the rotating mirror and the disc frame, and the power driving device is disposed on a backlight surface of the rotating mirror, and a driving force of the power driving device directly acts on the Rotating the mirror, the rotating mirror is rotated by the support of the rotating shaft, and the return spring resets the rotating mirror to the position of the resetting plate when the power driving device stops working.
• the return spring maintains a certain deformation when the rotating mirror is in a normal working position, and the resetting plate limits the rotation of the rotating mirror due to the deformation of the return spring.
• the rotating mirrors of the plurality of rotating mirrors on the same radial direction are disposed on the same rotating shaft.
• the dish concentrator further comprises a fixed mirror fixedly disposed on the disc holder.
• the fixed mirror and the rotating mirror are annularly disposed in the disc frame, the fixed mirror is disposed on an outer ring of the disc frame, and the rotating mirror is disposed in the On the inner ring of the disc holder.
• the present invention also provides a dish type solar thermal power generation system including a dish concentrator, an engine and a tracking control system, and the dish concentrator is specifically the above-described dish concentrator.
• the dish concentrator provided by the present invention has a rotating shaft which is rotatably connected at both ends thereof, and a rotating mirror fixedly connected thereto is disposed on a side surface of the rotating shaft, and the rotating mirror is back-illuminated
• a power drive for driving the rotation of the rotating mirror is disposed on the face or the disk, and the operating state of the power drive is controlled by a control system connected thereto.
• the control system controls the operation of the power driving device, and the power driving device provides the rotating power for the rotating mirror, and the rotating mirror rotates under the driving or supporting action of the rotating shaft to change the rotation.
• the reflected light direction of the mirror realizes the adjustable control of the concentrated energy of the dish concentrator.
• FIG. 1 is a schematic structural view of a first embodiment of a dish concentrator according to the present invention.
• FIG. 2 is a schematic view showing the installation of a rotating mirror of the dish concentrator of the present invention
• FIG. 3 is a schematic structural view of a driving motor driving a rotating mirror
• Figure 4 is a schematic structural view of a hydraulic system driving a rotating mirror
• Figure 5 is a schematic view showing the structure of an electromagnet-driven rotating mirror
• FIG. 6 is a schematic view showing the installation of the reset plate, the rotation restricting plate and the return spring of the present invention
• FIG. 7 is a schematic structural view of a second embodiment of the dish concentrator according to the present invention.
• Figure 8 is a schematic view showing the structure of the rotating mirror to the side of the ring
• Figure 9 is a schematic view showing the structure of the rotating mirror ring inward and outward;
• Figure 10 is a schematic view showing the structure of the rotating mirror rotating sideways
• Figure 11 is a schematic view showing the structure of the rotating mirror inverting radially inside and outside.
• Embodiments of the present invention disclose a dish concentrator including a rotating mirror to achieve adjustable control of the focusing energy of the dish concentrator.
• 1 is a schematic structural view of a first embodiment of a dish concentrator according to the present invention.
• the disc concentrator includes a disc rack column 1, a disc holder 2, a rotating shaft 3, a rotating mirror 4, a power driving device 5, and a control system 6.
• Solar thermal utilization equipment 7 is The working object of the dish concentrator absorbs the energy focused by the dish concentrator.
• the disc post 1 is used to support the disc holder 2.
• the two ends of the rotating shaft 3 are disposed in the disc holder 2.
• the rotating shaft 3 is rotatably connected with the disc holder 2.
• the rotating shaft 3 When an external force acts on the rotating shaft 3, the rotating shaft 3 can rotate around itself.
• the rotating shaft 3 is disposed on the side of the rotating shaft 3, and the rotating shaft 3 is fixedly connected with the rotating mirror 4, and the rotating shaft 3 can rotate the rotating mirror 4 by its own rotation; obviously, when an external force directly acts on the rotating mirror 4,
• the rotating mirror 4 can also be rotated by the support of the rotating shaft 3.
• the power driving device 5 is disposed on the backlight surface of the rotating mirror 4 for driving the rotating mirror 4 to rotate.
• the power generated by the power driving device 5 directly acts on the rotating mirror 4, and the rotating mirror 4 is driven by the power driving device 5.
• the rotation of the shaft 3 is started, and the power driving device 5 can be a hydraulic system or an electromagnet.
• the power driving device 5 can also be disposed on the disc frame 2 near the position of the rotating shaft 3, and the power driving device 5 drives the rotating shaft 3 to rotate by the power transmission element, thereby driving the rotating mirror 4 to rotate, and the power driving device 5 can be a driving motor.
• the corresponding power transmission components can be gears, chains, worms and hinges.
• the power driving device 5 can be any power driving system capable of driving the rotation of the rotating mirror 4, and is not limited to the limitation of the power driving device 5 in the embodiment.
• the control system 6 is connected to the power drive unit 5 for controlling the operating state of the power drive unit 5, and the control system 6 can be remotely disposed to perform remote monitoring of the power drive unit 5.
• the solar heat utilization device 7 is fixed to the upper side of the disk holder 2 through a support column extending from the center of the disk holder 2, and the solar heat utilization device 7 absorbs the energy focused by the disk concentrator.
• FIG. 2 is a schematic view showing the installation of the rotating mirror of the dish concentrator of the present invention.
• two rotating shaft supports 8 are disposed between the rotating mirror 4 and the disk holder 2.
• One end of the rotating shaft support 8 is fixedly mounted on the disk frame 2, and the other end is fixedly mounted on the rotating mirror.
• the backlight surface of 4, the position of the two shaft supports 8 is symmetrical with respect to the center line of the rotating mirror 4, and the center of gravity of the rotating mirror 4 falls on the left side of the line connecting the two shaft supports 8, the two shaft branches
• the central portion of the seat 8 is provided with a through hole, and the rotating shaft 3 is installed in the through hole of the two rotating shaft supports 8, and an interference fit between the rotating shaft 3 and the rotating shaft support 8 is realized.
• the rotating shaft support 8 can be fixedly mounted on the disc holder 2 by welding. If the rotating mirror 4 itself has a metal supporting member, the rotating shaft support 8 can also be fixedly mounted on the rotating mirror 4 by welding. The backlight surface; otherwise, the hinge support 8 can be bonded to the backlight of the rotating mirror 4.
• the rotating shaft 3 can be divided into two rotating shafts, and the two rotating shafts respectively respectively mount the rotating shaft supports 8 In the through hole, the two rotating shafts are concentric and cooperate with the through holes of the respective rotating shaft supports 8.
• One of the rotating shafts 3 realizes the supporting action of the rotating mirror 4, and the other one of them realizes the rotation of the rotating mirror 4.
• the installation manner of the rotating mirror shown in FIG. 2 is only a preferred installation method of the rotating mirror of the dish concentrator of the present invention, and other mounting methods, such as the cooperation of the bearing and the rotating shaft, can be used to realize the rotating reflection.
• Mirror installation The mounting of the rotating mirror shown in Fig. 2 is merely for the purpose of understanding the mounting principle of the rotating mirror 4 of the present invention, and should not be construed as limiting the manner of mounting it.
• the disc frame 2 can be provided with a plurality of rotating shafts 3 and rotating mirrors 4, and one rotating mirror 4 is provided with at least one rotating shaft 3, and the number of rotating mirrors 4 can be determined according to the solar thermal utilization device 7 during initial commissioning or normal operation. , the energy absorbed by the collector is determined.
• the plurality of rotating mirrors 4 can also share a rotating shaft 3, and a plurality of rotating mirrors 4 are rotated by a rotating shaft 3, and a plurality of rotating mirrors 4 on the same rotating shaft 3 form an array of rotating mirrors 4.
• An array of rotating mirrors 4 can be formed as a plurality of rotating mirrors 4 in the same radial direction of the disc tray 2.
• the case where the rotating mirror 4 is disposed with at least one of the rotating shafts 3 can be combined with the case where the plurality of rotating mirrors 4 share one rotating shaft 3.
• the process of adjusting the focusing energy by the dish concentrator is specifically as follows:
• the solar thermal utilization device 7 works normally, the reflected light of all the rotating mirrors 4 in the disc frame 2 is focused on the collector of the solar thermal utilization device 7, when the solar energy
• the control system 6 receives the signal for reducing the focus energy, the control system 6 controls the operation of the power driving device 5, and the power driving device 5 drives the rotating mirror 4 to rotate, so that the reflected light of the rotating mirror 4 is rotated.
• the number of rotating mirrors 4 controlled by the control system 6 can be determined based on the reduced focusing energy required by the disc concentrator.
• the driving manner of driving the rotating mirror 4 by the power driving device 5 includes: driving the rotating shaft 3 to drive the rotating shaft 3 to rotate the rotating mirror 4, or driving the rotating mirror 4 directly by the power driving device 5, and implementing the rotating mirror under the support of the rotating shaft 3 4 rotation.
• a power driving device 5 is not limited to driving only one rotating mirror 4, and one power driving device 5 can drive a plurality of rotating mirrors 4 according to actual work requirements, such as a power driving device 5 driving a rotating mirror 4.
• the control system 6 simultaneously controls a plurality of power drives 5. According to the actual work needs, the control system 6 controls a certain number of power drives.
• the moving device 5 works to drive the rotating mirror 4 corresponding to the number of power driving devices 5 to realize the focusing energy adjustment of the dish concentrator, and the number of the power driving devices 5 controlled by the control system 6 should satisfy the disc.
• the concentrator adjusts the need for focusing energy.
• the solar thermal utilization device 7 may further be provided with a sensing component, and the sensing component is connected to the control system 6.
• the sensing component senses that the solar thermal utilization device is operating at an excessive temperature exceeding a predetermined operating temperature value
• the sensing component The thermal signal is converted into an electrical signal and transmitted to the control system 6.
• the control system 6 controls a certain number of rotating mirrors 4 to start rotating, and adjusts the focusing energy of the dish concentrator to reduce the solar heat utilization equipment.
• the disc concentrator disclosed in the embodiment of the present invention has a rotating shaft which is rotatably connected at both ends thereof, and a rotating mirror fixedly connected thereto is disposed on a side surface of the rotating shaft, and a backlight surface or a disc frame of the rotating mirror is disposed A power drive for driving the rotation of the rotating mirror is provided, the operating state of the power drive being controlled by a control system connected thereto.
• the control system controls the power driving device to operate, thereby driving the rotating mirror to rotate, so that the direction of the reflected light of the rotating mirror is changed, and the collecting energy of the dish concentrator is realized. Adjustable control.
• Fig. 3 is a schematic structural view of a driving motor driving rotating mirror
• Fig. 3 is a partial schematic view of the disk type concentrating device shown in Fig. 1 for explaining the working principle of the driving motor to drive the rotating mirror.
• the disc holder 2 of the disc concentrator shown in FIG. 3 is further provided with a reset plate 9 and a rotation restricting plate 10, and the setting position of the reset plate 9 and the rotating mirror 4 are provided.
• the normal working position is the same, and the normal working position of the rotating mirror 4 refers to the position where the rotating mirror 4 is located on the disk holder 2 when the reflected light of the rotating mirror 4 is focused on the heat collector of the solar heat utilization device 7.
• Rotating the limiting plate 10 under the premise that the reflected light of the rotating mirror 4 deviates from the collector of the solar thermal utilization device 7, limits the rotation angle of the rotating mirror 4, and prevents the rotating mirror 4 from being damaged due to excessive rotation angle .
• the power driving device 5A shown in FIG. 3 is more specific.
• the power driving device 5A shown in FIG. 3 is a driving motor, and the driving motor 5A is disposed on the disk holder 2, and is driven.
• the position of the movable motor 5A on the disk holder 2 is close to the rotating shaft 3, and the driving motor 5A is rotated by the gear driving rotating shaft 3, thereby driving the rotating mirror 4 to rotate.
• the resetting plate 9 and the rotation restricting plate 10 are also provided with sensing elements, and the sensing elements of the resetting plate 9 and the sensing elements of the rotation limiting plate 10 are respectively connected to the control system 6.
• the driving motor 5A drives the rotating mirror 4 to rotate.
• the control system 6 controls the driving motor 5A to rotate, and the gear is driven by the rotation of the driving motor 5A.
• the rotating shaft 3 starts to rotate, and the rotating mirror 4 starts to rotate under the driving of the rotating shaft 3.
• the reflected light of the rotating mirror 4 starts to deviate from the collector of the solar heat utilization device.
• the rotation limit The sensing element on the board 10 sends a signal to the control system 6, and after receiving the signal, the control system 6 controls the driving motor 5A to stop rotating, and completes the work of reducing the energy collected by the dish concentrator; when the control system 6 receives the signal, the disc needs to be added.
• the control system 6 controls the driving motor 5A to rotate in the reverse direction. At this time, the direction in which the driving motor 5A rotates is opposite to the direction in which the driving motor 5A drives the rotating mirror 4 to reduce the focusing energy of the disc concentrator.
• the gear drives the rotating shaft 3 to rotate in the opposite direction, and the rotating mirror 4 starts to be driven by the rotating shaft 3
• the sensing element on the resetting plate 9 sends a signal to the control system 6, and after receiving the signal, the control system 6 controls the driving motor 5A to stop rotating, and completes the resetting operation of the rotating mirror 4,
• the focusing energy of the dish concentrator begins to increase.
• Fig. 4 is a schematic structural view of a hydraulic system driving a rotating mirror
• Fig. 4 is a partial schematic view of the dish concentrator shown in Fig. 1 for explaining the working principle of the hydraulic system driving the rotating mirror.
• a return spring 11 is further disposed between the disc holder 2 of the disc concentrator shown in FIG. 4 and the rotating mirror 4, and the return spring 11 is in the normal position of the rotating mirror 4.
• the return spring 11 maintains a certain deformation, and the resetting plate 9 acts as a baffle to prevent the rotating mirror 4 from being returned by the return spring.
• the traction of 11 deviates from the working position.
• the return spring 11 maintains a certain deformation when the rotating mirror 4 is in the working position, and prevents the rotating mirror 4 from being shaken when the disk holder 2 is rotated, thereby causing the rotating mirror 4 to operate abnormally.
• the power driving device of the dish concentrator shown in Fig. 4 adopts a hydraulic system 5B, and the hydraulic system 5B is disposed on the backlight surface of the rotating mirror 4, and the power of the hydraulic system 5B directly acts on the rotating mirror 4, and is supported by the rotating shaft 3
• the rotating mirror 4 is driven to rotate.
• the reset plate 9 and the rotation restricting plate 10 of the dish concentrator shown in Fig. 4 are not provided with an inductive element as compared with the dish concentrator shown in Fig. 3.
• the process of the hydraulic system 5B driving the rotating mirror 4 is specifically as follows:
• the control system 6 controls the hydraulic system 5B to start working, and the hydraulic system 5B drives the rotating mirror. 4 starts to rotate, the reflected light of the rotating mirror 4 starts to deviate from the collector of the solar heat utilization device, and the deformation generated by the return spring 11 is increased.
• Fig. 5 is a schematic view showing the structure of an electromagnet-driven rotating mirror
• Fig. 5 is a partial schematic view of the disc concentrator shown in Fig. 1 for explaining the working principle of the electromagnet-driven rotating mirror.
• the power driving device of the dish concentrator shown in FIG. 5 is an electromagnet 5C
• the structure of the concentrator is the same.
• the bracket extending from the electromagnet 5C through the disc holder 2 is disposed on the backlight surface of the rotating mirror 4, and the electromagnet 5C directly acts on the rotating mirror 4, and the rotating mirror 4 is rotated by the support of the rotating shaft 3. .
• the resetting plate 9 and the rotation restricting plate 10 are not provided with an inductive element.
• the process of driving the rotating mirror 4 by the electromagnet 5C is specifically as follows:
• the control system 6 controls the electromagnet 5C to start working, and the electromagnet 5C is energized to drive the rotation.
• the mirror 4 starts to rotate, and the reflected light of the rotating mirror 4 starts to deviate from the collector of the solar heat utilization device, and the deformation generated by the return spring 11 is increased.
• the above embodiment is only a special case in which the power driving device drives the rotation of the rotating mirror. According to the actual working conditions, different power driving devices or different power driving devices can be used to provide power support for the rotating mirror.
• Figure 6 is a schematic view showing the installation of the reset plate, the rotation restricting plate and the return spring of the present invention.
• the rotation restricting plate 10 is fixedly mounted on the disk holder 2, and the position is set on the m line.
• the return spring 11 is mounted at the position of the disk holder 11A, and the return spring 11 is preferably mounted such that the return spring 11 is spaced from the rotating shaft 3 by a distance greater than a quarter of the mounted side of the rotating mirror 4.
• FIG. 7 is a schematic structural view of a second embodiment of a dish concentrator according to the present invention.
• the disc holder 2 of the disc concentrator shown in FIG. The fixed mirror 12, the fixed mirror 12 does not rotate relative to the disc holder 2, and the fixed mirror 12 is disposed in the disc holder 2 such that the reflected light of the fixed mirror 12 can be focused on the collector of the solar thermal utilization device 7. .
• the total number of fixed mirrors 12 and rotating mirrors 4 is determined according to the energy required by the collectors of the solar thermal utilization device 7 during initial commissioning or normal operation, and the number of rotating mirrors 4 is based on the solar thermal utilization device 7
• the magnitude of the endothermic energy adjustment determines that the position of the rotating mirror 4 in the disc holder 2 can be determined according to the ease of rotation of the rotating mirror 4 in the disc holder 2 and the rotational balance of the disc holder 2.
• the rotating mirror 4 starts to rotate, so that the reflected light deviates from the collector of the solar heat utilization device 7, and the fixed reflection
• the mirror 12 does not rotate, and the reflected light is still focused on the heat collector of the solar heat utilization device 7, thereby achieving the effect of reducing the power of the dish concentrator and protecting the collector of the solar heat utilization device 7;
• the rotating mirror 4 begins to reset, and its reflected light is refocused on the collector of the solar thermal utilization device 7.
• the fixed mirror and the rotating mirror are annularly disposed in the disc frame, and the fixed mirror is preferably disposed on the outer ring of the disc frame, and the rotating mirror is preferably disposed on the inner ring of the disc holder.
• Figure 8 is a schematic view showing the structure of the rotating mirror ring side
• Figure 9 is the rotating mirror ring inward.
• the disc frame 2 is divided into four inner and outer annular structures.
• the inner ring of the disc frame 2 has a plurality of rotating mirrors 4, and the outer ring has a plurality of fixed reflections.
• Mirror 12 Under normal working conditions, all the reflected light of the rotating mirror 4 and the fixed mirror 12 are focused on the collector of the solar thermal utilization device 7, and the power of the dish concentrator needs to be adjusted to be small.
• the plurality of rotating mirrors 4 of the inner ring two layers are rotated sideways with respect to the disk frame 2, and the structure thereof is as shown in FIG. 8, or a plurality of rotating reflections of the inner ring two layers
• the mirror 4 is turned inwardly and outwardly with respect to the disk frame 2, and its structure is as shown in FIG.
• the reflected light of the plurality of rotating mirrors 4 of the inner ring is deviated from the collector of the solar thermal utilization device 7, and the reflected light of the plurality of fixed mirrors 12 of the outer ring is still focused on the heat collecting of the solar thermal utilization device 7. Therefore, the adjustment of the focusing energy of the dish concentrator is realized; when the dish concentrator needs to return to the normal working state, the rotating mirror 4 starts to reset.
• the plurality of rotating mirrors 4 in the same radial direction of the disk holder 2 share a rotating shaft 3 to form an array of rotating mirrors 4.
• the number of arrays of rotating mirrors 4 can be determined according to the magnitude of the heat absorption energy adjustment of the solar thermal utilization device 7, and the array of rotating mirrors 4 is disposed in the disk holder 2 at the position according to the array of rotating mirrors 4. The degree of difficulty of rotation and the balance of rotation of the disk holder 2 are determined.
• Fig. 10 is a structural schematic view showing the radial side rotation of the rotating mirror
• Fig. 11 is a structural schematic view showing the rotating mirror rotating inside and outside.
• the rotating mirrors 4 of the disk holder 2 in the same radial direction form an array of rotating mirrors 4.
• the array of all the rotating mirrors 4 and the reflected light of all the fixed mirrors 12 are focused on the collector of the solar thermal utilization device 7, when the power of the dish concentrator needs to be adjusted.
• the collector of the solar thermal utilization device 7 is reduced or protected, the array of rotating mirrors 4 is rotated sideways with respect to the disk holder 2, the structure of which is shown in FIG.
• the structure is as shown in Fig. 11.
• the reflected light of the array of rotating mirrors 4 is deviated from the collector of the solar thermal utilization device 7, and the reflected light of the fixed mirror 12 is still focused on the heat collecting of the solar thermal utilization device 7. Therefore, the adjustment of the focusing energy of the dish concentrator is realized; when the dish concentrator needs to return to the normal working state, the array of the rotating mirror 4 starts to be reset.
• the working principle of the rotation of the rotating mirror 4 relative to the rotation of the disk holder 2 and the rotation of the rotating mirror 4 is the same as that of the rotating mirror 4 described in the first embodiment. Therefore, the present embodiment rotates the rotating mirror 4 relative to the disk holder 2, and rotates the mirror. The working principle of 4 reset will not be described again.
• the rotation direction of the rotating mirror 4 and the setting position of the rotating shaft 3 can be arbitrarily determined on the premise of facilitating the design of the dish concentrator, and the rotating direction of the rotating mirror 4 is preferably inverted or opposite to the inside and outside of the disc holder 2.
• the disc tray 2 is rotated sideways.
• the disc holder in order to facilitate the rotation of the rotating mirror 4 and maintain the stability of the disc holder 2, the disc holder
• the shape of 2 is preferably a circle or a polygon.
• the rotating mirror 4 and the fixed mirror 12 are preferably linear compound parabolic mirrors, linear Fresnel lenses or mirrors, convex lenses, lenses, linear parabolic mirrors.
• the reflected light can be focused on other solar thermal utilization devices to realize the comprehensive utilization of solar energy.
• control principle of the control system 6 for the components of the present invention is the same as the existing control theory and will not be described again.
• the embodiment of the invention discloses a dish concentrator, which can rotate a corresponding number of rotating mirrors according to the needs of the solar energy utilization device, so that the reflected light of the rotating mirrors is offset or close to the solar energy utilization device.
• the collector adjusts the focusing energy of the dish concentrator in time, and adjusts the output power of the solar energy utilization device.
• the present invention also discloses a dish type solar thermal power generation system including the above-mentioned dish concentrator.
• a dish type solar thermal power generation system including the above-mentioned dish concentrator.

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