Heliostat cleaning system
The heliostat cleaning system, which uses a mother car to carry multiple daughter car cleaning machines, solves the problems of bulky and ineffective cleaning of existing equipment, and achieves low-cost and efficient heliostat cleaning.
Patent Information
- Application Number
- CN202422111962.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Existing heliostat cleaning equipment is bulky, has poor cleaning effect, and is expensive, making it difficult to clean efficiently in harsh environments.
The system employs a mother car carrying multiple daughter car cleaning machines, which are then deployed to the heliostat surface via a take-up and drop system. This approach utilizes existing sweeping structures and simple sensors to reduce equipment complexity and cost.
It achieves low-cost and efficient heliostat cleaning. The cleaning machine can move on its own, which improves cleaning efficiency, simplifies equipment structure and reduces maintenance difficulty.
Smart Images
Figure CN223616323U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heliostat technology, specifically to a heliostat cleaning system. Background Technology
[0002] Solar thermal power generation uses numerous mirrors to focus direct sunlight, heating a working fluid to produce high-temperature, high-pressure steam. This steam then drives a turbine to generate electricity. Among these technologies, tower-type solar thermal power generation is gaining increasing market application due to its high thermal efficiency, good grid peak-shaving capabilities, clean and green attributes, and broad active and reactive power regulation and inertia support capabilities.
[0003] Tower solar thermal power generation uses numerous heliostats to concentrate and reflect sunlight onto the collector tubes at the top of the absorber tower, where heat exchange is completed by heating molten salt inside the tubes. Typically, project sites are located in open desert or Gobi regions with extremely harsh environments. Adhesive dust and grime formed by wind, sand, rain, and dew adhere to the surface of the heliostats, reducing their cleanliness and decreasing the reflection of solar energy, thus affecting the overall power generation efficiency of the solar thermal power plant.
[0004] After prolonged operation, the thickness and hardness of the accumulated dust on heliostats gradually increase, requiring the use of specialized heliostat cleaning equipment for removal. Currently, heliostat cleaning is primarily performed using cleaning trucks. Figure 1 As shown, the cleaning truck travels along the field road to clean the heliostats. Due to the poor road conditions and harsh working environment, coupled with the bulky nature of the cleaning equipment, the truck faces difficulties in its movement. To perform the cleaning function, the truck itself needs to be equipped with numerous sensors and requires high responsiveness, resulting in high costs and less than satisfactory cleaning results. Utility Model Content
[0005] To address the shortcomings of the existing technology, this utility model provides a heliostat cleaning system, which uses a mother car to carry multiple daughter car cleaning machines, which are then sequentially delivered to the surface of the heliostat for cleaning. This system is low in cost and provides good cleaning results.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A heliostat cleaning system includes a mother car and daughter car cleaning machines; multiple daughter car cleaning machines are placed inside the carriage of the mother car; the carriage is equipped with a retraction system; the retraction system is used to raise and lower the daughter car cleaning machines; the daughter car cleaning machines on the retraction system move to the surface of the heliostat to clean the surface of the heliostat.
[0008] Furthermore, the launching and retracting system is a hydraulic lifting structure, a worm gear structure, a hoisting device, or a linear cylinder.
[0009] Furthermore, the deployment system is installed on the floor of the carriage, and a gripping mechanism is provided on one side of the deployment system. The gripping mechanism is used to grip the deployment system on the upper and lower parts of the sub-cart washing machine.
[0010] Furthermore, the deployment and retraction system is provided with a ramp structure on one side, the ramp structure is placed on the floor of the carriage, and the top of the ramp structure is connected to the top of the deployment and retraction system which has been lowered to a predetermined height; the sub-vehicle washing machine moves up and down the deployment and retraction system by passing over the ramp structure.
[0011] Furthermore, the carriage floor has a recessed structure, and the retraction system is installed in the recessed structure. When the retraction system is lowered to its lowest position, the top of the retraction system is flush with the carriage floor, and the sub-vehicle cleaning machine can directly drive up and down the retraction system.
[0012] Furthermore, a skylight is provided on the top of the carriage directly above the loading and unloading system for the sub-cart cleaning machine to enter and exit the carriage.
[0013] Furthermore, the carriage also includes a cleaning machine charging system for charging the sub-vehicle cleaning machine.
[0014] Furthermore, the carriage also includes a water replenishment system for replenishing water to the sub-cart washing machine.
[0015] Furthermore, the compartment also includes a storage area; multiple of the aforementioned vehicle cleaning machines are arranged sequentially in the storage area.
[0016] The beneficial effects of this utility model are:
[0017] The heliostat cleaning system of this invention uses a mother car to carry multiple daughter car cleaning machines, which are sequentially sent to the surface of the heliostat for cleaning. The daughter car cleaning machines use existing sweeping structures, eliminating the need for large cleaning equipment or multiple sensors. The system is simple in structure, low in cost, and provides good cleaning results.
[0018] The subsidiary cleaning machine of this invention can move independently on the surface of the heliostat, unaffected by the movement of the parent machine. This invention allows multiple subsidiary cleaning machines to be sequentially deployed to the surface of the heliostat before being sequentially retrieved after cleaning, greatly improving cleaning efficiency.
[0019] The launching and retracting system of this utility model can adopt various lifting platform structures to realize the lifting and lowering of the sub-cart cleaning machine. It can be flexibly selected according to the working conditions, with simple structure and convenient maintenance.
[0020] When the upper surface of the carriage floor is flat, this invention allows for the installation of a gripping mechanism or a ramp structure, depending on the operating conditions of the loading and unloading system, to achieve the automatic loading and unloading of the sub-cart cleaning machine. When the loading and unloading system is installed within a recessed structure on the carriage floor, with its top flush with the upper surface of the carriage floor, the sub-cart cleaning machine can directly move up and down the loading and unloading system. Therefore, this invention utilizes a simple structure to achieve the loading and unloading of the sub-cart cleaning machine, offering simple operation and convenient maintenance. Attached Figure Description
[0021] Figure 1 This is a diagram of a heliostat cleaning scheme in the existing technology;
[0022] Figure 2 This is a schematic diagram of the operation of the heliostat cleaning system of this utility model;
[0023] Figure 3 This is a top view of the interior of the carriage in this utility model;
[0024] Figure 4 This is a schematic diagram of the operation of the heliostat cleaning system in the heliostat field of this utility model;
[0025] Figure 5 This is a flowchart illustrating the cleaning process of the heliostat cleaning system of this utility model.
[0026] Among them: 1-mother car, 1.1-cleaner charging system, 1.2-water replenishment system, 1.3-storage area, 1.4-retraction and release system, 2-child car cleaning machine, 3-heliostat surface. Detailed Implementation
[0027] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of this utility model.
[0028] The terms used in this application, such as top, bottom, left, right, inside, outside, front end, rear end, head, and tail, are based on the orientations or positional relationships shown in the accompanying drawings. Different drawings may result in different positional relationships, therefore they should not be construed as limiting the scope of protection.
[0029] In this utility model, the terms "installation," "connection," "interlocking," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a connection that allows communication, a direct connection, or an indirect connection through an intermediate medium. They can also refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.
[0030] This embodiment describes a heliostat cleaning system, such as Figure 2 As shown, the cleaning system includes a mother car 1 and daughter car cleaning machines 2. The mother car 1 carries 30 to 50 daughter car cleaning machines 2. The mother car 1 sends the daughter car cleaning machines 2 to the surface 3 of the heliostat for cleaning.
[0031] like Figure 3 As shown, the mother car 1 in this embodiment includes a cleaning machine charging system 1.1, a water replenishment system 1.2, a storage area 1.3, and a take-up and drop-off system 1.4 inside its compartment. The cleaning machine charging system 1.1 and the water replenishment system 1.2 can respectively use existing charging and water replenishment structures to charge and replenish the daughter car cleaning machines 2. The storage area 1.3 is for storing the daughter car cleaning machines 2, with multiple daughter car cleaning machines 2 arranged sequentially within it. The take-up and drop-off system 1.4 is installed on one side of the rear of the compartment and is used to lift the daughter car cleaning machines 2 to be flush with the surface of the heliostat.
[0032] A skylight is provided on the top of the carriage directly above the deployment and retraction system 1.4 for the sub-cart cleaning machine 2 to enter and exit the carriage. During operation, the skylight is opened, and the deployment and retraction system 1.4 raises the sub-cart cleaning machine 2 through the skylight and extends it out of the carriage until it is flush with the surface of the heliostat 3. When not in operation, the skylight is closed to ensure safety inside the carriage.
[0033] In this embodiment, the carriage floor may have a recessed structure in the installation area of the retraction system 1.4. The retraction system 1.4 is installed in the recessed structure. When the retraction system 1.4 is lowered to the lowest position, the top of the retraction system 1.4 is flush with the carriage floor. The sub-vehicle cleaning machine 2 can drive directly up and down the retraction system 1.4 and adjust itself to the predetermined posture on the retraction system 1.4.
[0034] Alternatively, in another embodiment, the upper surface of the carriage floor is flat, and a gripping mechanism or ramp structure is provided between the take-up system 1.4 and the storage area 1.3.
[0035] The gripping mechanism is used to grip the loading and unloading system 1.4 of the sub-cart washing machine 2. It can be a rotatable robotic arm, comprising a gripping part and a robotic arm. The robotic arm is mounted on the car floor, and the gripping part is mounted on the robotic arm via a lifting assembly. After the gripping part grips the sub-cart washing machine 2, it lifts and lowers the sub-cart washing machine 2 via the lifting assembly. The robotic arm then delivers the sub-cart washing machine 2 onto the loading and unloading system 1.4 or the car floor, placing it in a predetermined posture. When using the gripping mechanism, the loading and unloading system 1.4 does not need to be lowered to be flush with the car floor; it only needs sufficient space above the loading and unloading system 1.4 to allow for the movement of the gripping mechanism.
[0036] The ramp structure is placed on the floor of the carriage, and its top is connected to the top of the retraction system 1.4 which is lowered to the minimum height or the predetermined height. The sub-car washing machine 2 drives over the ramp structure to go up and down the retraction system 1.4.
[0037] The launching and retracting system 1.4 in this embodiment can adopt a lifting platform mechanism such as a hydraulic lifting structure, a worm gear structure, a linear cylinder, or a hoisting device.
[0038] like Figure 4 and Figure 5 As shown, the cleaning operation mode of the heliostat cleaning system in this embodiment is as follows:
[0039] 1. Mother car 1 carries multiple daughter car cleaning machines 2 into the mirror field through the carriage;
[0040] 2. Adjust the heliostat to be cleaned to a horizontal position (i.e., protective state) so that the surface 3 of the heliostat is horizontal;
[0041] 3. The mother car 1 drives to the vicinity of the adjusted heliostat, and the distance between the side of the carriage near the sunroof and the edge of the heliostat surface 3 does not exceed 200mm, preferably 100mm-200mm. If the distance is too small, it is easy to collide with the heliostat when parking the mother car 1. If the distance is too large, the daughter car washing machine 2 will not be able to drive onto the heliostat surface 3. One daughter car washing machine 2 moves onto the retraction system 1.4, the sunroof is opened, and the retraction system 1.4 raises the daughter car washing machine 2 to a height that is approximately level with the heliostat surface 3 (i.e., the height difference is controlled within the range that does not affect the driving of the daughter car washing machine 2).
[0042] 4. After the trolley cleaning machine 2 is automatically driven to the heliostat surface 3 by the take-up and release system 1.4, it automatically cleans the heliostat surface 3.
[0043] 5. The retraction system 1.4 retracts into the carriage, and the next subcar cleaning machine 2 moves onto the retraction system 1.4 to wait; at the same time, the mother car 1 drives to the vicinity of the next heliostat that has been adjusted in attitude, and continues to release the subcar cleaning machine 2 to clean the surface 3 of the heliostat.
[0044] 6. After cleaning the surface 3 of the heliostat, the daughter car cleaning machine 2 travels to the preset position to wait for the mother car 1 to retrieve it;
[0045] 7. After the mother car 1 releases all the daughter car cleaning machines 2, it travels to the vicinity of the daughter car cleaning machines 2 that are already waiting to be retrieved; the deployment and retrieval system 1.4 rises to be level with the surface 3 of the heliostat, and the daughter car cleaning machines 2 travel onto the deployment and retrieval system 1.4; the deployment and retrieval system 1.4 carries the daughter car cleaning machines 2 back into the carriage and lowers them to the bottom of the carriage. After the daughter car cleaning machines 2 get off the deployment and retrieval system 1.4, they travel sequentially into the cleaning machine charging system 1.1 and the water replenishment system 1.2 for charging and water replenishment, completing one cleaning cycle.
[0046] The cleaning machine 2 used in this embodiment can adopt the current sweeping machine structure, such as an intelligent sweeping robot, which can move autonomously within the planned area and complete cleaning during the process, and the cleaning effect is good.
[0047] Alternatively, in another embodiment, a gripping mechanism is provided on one side of the sunroof on the top of the carriage for retracting and deploying the sub-cart washing machine 2. This mechanism can be used to move the sub-cart washing machine 2 from the top of the deployment and deployment system 1.4 onto the heliostat surface 3, or to retract the cleaned sub-cart washing machine 2 from the heliostat surface 3 back to the top of the deployment and deployment system 1.4. The gripping mechanism reduces the lifting range of the deployment and deployment system 1.4, eliminating the need for the top of the deployment and deployment system 1.4 to be flush with the heliostat surface 3 to move the sub-cart washing machine 2. It also increases the distance between the carriage edge and the heliostat surface 3, further reducing the risk of collision between the mother car 1 and the heliostat surface 3.
[0048] Although the principles of this utility model have been described in detail above with reference to preferred embodiments, those skilled in the art should understand that the above embodiments are merely illustrative explanations of the implementation of this utility model and are not intended to limit the scope of this utility model. The details in the embodiments do not constitute a limitation on the scope of this utility model. Any obvious changes, such as equivalent transformations or simple substitutions, based on the technical solution of this utility model without departing from its spirit and scope fall within the protection scope of this utility model.
Claims
1. A heliostat cleaning system, characterized in that, The cleaning system includes a mother car (1) and a daughter car cleaning machine (2); multiple daughter car cleaning machines (2) are placed in the carriage of the mother car (1), and the daughter car cleaning machine (2) is a sweeper structure; the carriage is equipped with a take-up and release system (1.4); the take-up and release system (1.4) is a lifting platform mechanism used to lift the daughter car cleaning machine (2) to be flush with the surface (3) of the heliostat; a skylight is provided on the top of the carriage directly above the take-up and release system (1.4) for the daughter car cleaning machine (2) to enter and exit the carriage; the daughter car cleaning machine (2) on the take-up and release system (1.4) moves to the surface (3) of the heliostat to clean the surface (3) of the heliostat.
2. The heliostat cleaning system according to claim 1, characterized in that, The launching and retracting system (1.4) is a hydraulic lifting structure, a worm gear structure, a hoisting device, or a linear cylinder.
3. The heliostat cleaning system according to claim 1, characterized in that, The take-up and release system (1.4) is installed on the floor of the carriage. A gripping mechanism is provided on one side of the take-up and release system (1.4). The gripping mechanism is used to grip the sub-cart washing machine (2) and place it on or off the take-up and release system (1.4).
4. The heliostat cleaning system according to claim 1, characterized in that, The retraction system (1.4) has a ramp structure on one side, which is placed on the floor of the carriage. The top of the ramp structure is connected to the top of the retraction system (1.4) which is lowered to a predetermined height. The sub-vehicle washing machine (2) moves up and down the retraction system (1.4) after passing the ramp structure.
5. The heliostat cleaning system according to claim 1, characterized in that, The carriage floor has a recessed structure, and the retraction system (1.4) is installed in the recessed structure. When the retraction system (1.4) is lowered to its lowest position, the top of the retraction system (1.4) is flush with the carriage floor, and the sub-vehicle cleaning machine (2) drives directly up and down the retraction system (1.4).
6. The heliostat cleaning system according to claim 1, characterized in that, The carriage also includes a cleaning machine charging system (1.1) for charging the sub-carrying cleaning machine (2).
7. The heliostat cleaning system according to claim 1, characterized in that, The carriage also includes a water replenishment system (1.2) for replenishing water to the sub-cart cleaning machine (2).
8. The heliostat cleaning system according to claim 1, characterized in that, The carriage also includes a storage area (1.3); multiple of the vehicle cleaning machines (2) are arranged in sequence in the storage area (1.3).