Water injection type solar photovoltaic panel mounting base structure

Abstract

The invention relates to the technical field of solar photovoltaic equipment installation, in particular to a water injection type solar photovoltaic panel installation base structure which comprises a hollow balance weight base body with a preset inclination angle, a water injection opening is formed in the higher end of the balance weight base body, and the water injection opening is provided with an automatic exhaust sealing cover. Two sets of positioning assemblies are arranged on the inclined face of the balance weight base body, one set of positioning assemblies is a fixed clamping part integrally formed with the balance weight base body, and the other set of positioning assemblies is a movable pressing part detachably connected with the balance weight base body. The bidirectional positioning structure effectively limits the horizontal and vertical displacement of the photovoltaic panel; the automatic exhaust sealing cover has the functions of normal sealing and high-pressure automatic exhaust, moisture leakage is prevented, deformation and damage of the balance weight base body due to too high air pressure are avoided, manual intervention and maintenance are not needed, long-term stable use of the base is guaranteed, the whole structure can be repeatedly used, and the requirements for migration of different scenes and assembly replacement are met.

Description

Technical Field

[0001] This invention relates to the field of solar photovoltaic equipment installation technology, specifically to a water-filled solar photovoltaic panel mounting base structure. Background Technology

[0002] Existing solar photovoltaic panel mounting bases are mainly divided into two categories: concrete casting type and fixed counterweight type. Concrete casting type bases require on-site formwork, pouring, and curing, resulting in a long construction period. Once formed, they cannot be moved, making subsequent adjustments to the photovoltaic array layout difficult and costly. Fixed counterweight type bases, on the other hand, suffer from heavy transportation burdens, require heavy equipment for hoisting during installation, and have insufficient stability in the connection between the counterweight and the base, making them prone to loosening in complex environments such as windy conditions and vibrations.

[0003] Traditional concrete-cast foundations require on-site formwork, pouring, and long-term curing, resulting in long construction cycles, high labor intensity, and immobility once formed. Later adjustments to the photovoltaic array layout necessitate demolition and reconstruction, leading to extremely high costs. Some fixed counterweight foundations rely on heavy counterweight blocks, requiring hoisting equipment for transportation and installation, which is cumbersome and lacks flexibility, failing to quickly adapt to the relocation needs of different installation scenarios. Existing foundation positioning structures are mostly single-clamp or compression designs, lacking a two-way collaborative positioning mechanism. Some clamping structures have poor compatibility with the edges of photovoltaic modules, making them prone to displacement due to vibration, wind, and other external forces during long-term use. Removable compression structures have insufficient foundation strength, easily deforming under stress and failing to provide stable positioning constraints, leading to module tilting or loosening, affecting power generation efficiency and operational safety. A few foundations using water-filled counterweights lack effective automatic venting functions. Air retention during water filling can cause incomplete counterweight filling, and high-pressure gas generated by water temperature changes and microbial activity cannot be expelled later, easily causing foundation bulging, deformation, or even seal detachment, severely impacting equipment lifespan. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a water-filled solar photovoltaic panel mounting base structure. This invention is easy to install, requiring no concrete pouring or heavy fixing equipment, significantly reducing construction difficulty and time. The bidirectional positioning structure effectively restricts the horizontal and vertical displacement of the photovoltaic panels, providing sufficient downward pressure for the water-filled counterweight. It exhibits excellent wind load and vibration resistance, preventing the modules from tipping over or shifting. The automatic venting sealing cover combines normal sealing and high-pressure automatic venting functions, preventing water leakage and avoiding deformation and damage to the counterweight base due to excessive air pressure. No manual intervention is required for maintenance, ensuring long-term stable use of the base. Furthermore, the overall structure is reusable, adaptable to different relocation and module replacement needs.

[0005] To address the problems of existing technologies, this invention provides a water-filled solar photovoltaic panel mounting base structure, including a hollow counterweight base with a preset tilt angle. The higher end of the counterweight base is provided with a water inlet, which is equipped with an automatic venting and sealing cap. Two sets of positioning components are provided on the tilted surface of the counterweight base. One set is a fixed snap-fit ​​part integrally formed with the counterweight base, and the other set is a detachably connected movable clamping part. The two sets of positioning components are respectively adapted to the positioning of the two side edges of the photovoltaic panel in the tilted state.

[0006] Preferably, the counterweight base is a base cylinder with a trapezoidal cross-section, the inclination angle of the base cylinder is a preset fitting angle, and the weight after being filled with water is a preset counterweight weight.

[0007] Preferably, the fixing clip is a plastic clamp, the height of which matches the thickness of the photovoltaic panel, and is used to clamp the lower side edge of the photovoltaic panel.

[0008] Preferably, the counterweight base has a thickened mounting position on the higher side, and a mounting groove is provided on the side of the thickened mounting position away from the fixed snap-fit ​​part. The movable clamping part is a metal clamp, and the metal clamp is detachably connected to the mounting groove by fasteners.

[0009] Preferably, the fastener is a screw, one end of the metal clamp is inserted into the mounting groove and matches the internal contour of the mounting groove, the mounting groove has a pre-set screw hole, and the insertion end of the metal clamp has a through hole adapted to the screw.

[0010] Preferably, the automatic exhaust sealing cover includes a cover body, a partition, a conical plug, and a return spring. The partition is located inside the cover body and forms an exhaust chamber. An exhaust port through the exhaust chamber is opened on the side wall of the cover body. An air inlet is provided at the center of the partition. The conical plug is located inside the exhaust chamber and can cover the air inlet. One end of the return spring is connected to the side of the conical plug away from the air inlet, and the other end of the return spring is connected to the inner top of the cover body. The return spring is always in a pre-compressed state. The exhaust chamber of the cover body is provided with a channel for the conical plug to move in a limited position. Several air guide holes are opened on the channel.

[0011] Preferably, the cover and the water inlet are connected by a threaded connection, and the inner wall of the cover is provided with an annular sealing gasket that fits against the outer wall of the water outlet.

[0012] Preferably, the vents are evenly distributed along the circumference of the cover, and the conical plug is made of an elastic and wear-resistant material.

[0013] Preferably, the counterweight base has outwardly extending wing plates on both sides, which are opposite to the tilt direction of the photovoltaic panel.

[0014] Preferably, the wing plate is installed via a wing plate base.

[0015] The advantages of this invention compared to the prior art are: 1. No concrete pouring or heavy fixing equipment is required. Water injection can form a stable counterweight. The automatic air venting and sealing cover simplifies the water injection operation. No manual air venting is required. The overall installation steps are clear and simple, which greatly reduces the construction difficulty and cycle. Two people can work together to quickly complete the installation of a set of components.

[0016] 2. The bidirectional positioning component locks the photovoltaic panel from both sides, effectively limiting horizontal and vertical displacement; the water-filled counterweight provides sufficient downward pressure, and with the preset friction coefficient, it has excellent wind load and vibration resistance, preventing the component from tipping over or shifting; the automatic venting sealing cover has both normal sealing and high-pressure automatic venting functions, which not only prevents water leakage and ensures the stability of the counterweight, but also prevents the substrate from deforming and being damaged due to excessive internal pressure, without the need for manual intervention maintenance.

[0017] 3. The detachable positioning components facilitate component disassembly, maintenance, and replacement, adapting to the needs of different component specifications. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the water-filled solar photovoltaic panel mounting base structure under the installation state of the present invention.

[0019] Figure 2 This is a side view of the water-filled solar photovoltaic panel mounting base structure of the present invention in its installed state.

[0020] Figure 3 This is a three-dimensional structural diagram of a water-filled solar photovoltaic panel mounting base structure according to the present invention.

[0021] Figure 4 This is a top view of a water-filled solar photovoltaic panel mounting base structure according to the present invention.

[0022] Figure 5 yes Figure 4 Sectional view along the middle AA.

[0023] Figure 6 yes Figure 4 Sectional view at the middle BB.

[0024] Figure 7 This is a schematic diagram of the movable clamping part of a water-filled solar photovoltaic panel mounting base structure according to the present invention.

[0025] Figure 8 This is a perspective view of an automatic venting sealing cover for a water-filled solar photovoltaic panel mounting base structure according to the present invention.

[0026] Figure 9 This is a partial exploded view of the automatic venting sealing cover of a water-filled solar photovoltaic panel mounting base structure according to the present invention.

[0027] Figure 10 This is a side view of the structure after the wing plate of the present invention is installed.

[0028] Figure 11 This is a schematic diagram of the wing plate base holding the wing plate according to the present invention.

[0029] The diagram is labeled as follows: 1-Counterweight base; 11-Water inlet; 12-Automatic vent sealing cover; 121-Cover; 1211-Ventilation chamber; 1212-Ventilation port; 1213-Annular sealing gasket; 122-Partition; 1221-Air inlet; 123-Conical plug; 124-Reset spring; 125-Channel; 1251-Air guide hole; 13-Fixing snap-fit ​​part; 131-Plastic pressure plate; 14-Modible clamping part; 141-Metal pressure plate; 1411-Perforation; 142-Fastener; 15-Wing plate; 16-Thickened mounting position; 161-Mounting groove; 1611-Screw hole; 17-Wing plate base; 171-Rotating handle; 172-Tightening rod; 173-Contact piece; 2-Photovoltaic panel. Detailed Implementation

[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0031] See Figures 1 to 6 As shown, a water-filled solar photovoltaic panel mounting base structure includes a hollow counterweight base 1 with a preset tilt angle. The higher end of the counterweight base 1 is provided with a water inlet 11, and the water inlet 11 is equipped with an automatic venting sealing cover 12. Two sets of positioning components are provided on the tilted surface of the counterweight base 1. One set is a fixed snap-fit ​​part 13 integrally formed with the counterweight base 1, and the other set is a movable clamping part 14 that can be detachably connected. The two sets of positioning components are respectively adapted to the positioning of the two side edges of the photovoltaic panel 2 in the tilted state.

[0032] The hollow counterweight base 1 of this invention adopts a specific external dimension design, and its preset tilt angle is precisely matched with the optimal light-receiving angle of the photovoltaic panel 2, ensuring the power generation efficiency of the module. The following steps are followed during installation: The first step is to arrange the counterweight base 1 on the installation surface at a preset interval after site pretreatment, and adjust the position to ensure that all bases are tilted in the same direction and at the same height. The second step is to place the photovoltaic panel 2 stably on the inclined surface of the counterweight base 1, so that the lower edge of the module is precisely engaged with the integrally formed fixing snap-fit ​​part 13. The height of the fixing snap-fit ​​part 13 is preset according to the thickness of the module to achieve the initial positioning of this side. Third step, adjust the position of the detachable movable clamping part 14 so that it fits tightly against the higher side edge of the photovoltaic panel 2, and fix the movable clamping part 14 to the preset position of the counterweight base 1 by fastener 142 to form a two-way positioning structure and lock the component from both sides. Fourth step, unscrew the automatic vent sealing cover 12, connect the water pipe to the water inlet 11 to inject water into the base. After the water is injected, put the automatic vent sealing cover 12 back into the water inlet 11. At this time, the automatic vent sealing cover 12 achieves normal sealing of the air guide hole 1251 to prevent water leakage. Fifth, after water is injected, the weight of the water forms a stable base counterweight. Combined with the bidirectional positioning and the friction between the base and the mounting surface, the overall fixation is completed. In subsequent use, if high-pressure gas is generated inside the counterweight base 1 due to water temperature changes, microbial activity, etc., the automatic venting and sealing cover 12 will automatically vent and depressurize to ensure the safety of the base structure.

[0033] The installation steps of this invention are clear and simple, requiring no concrete pouring or heavy fixing equipment, which greatly reduces the difficulty and cycle of construction; the bidirectional positioning structure effectively restricts the horizontal and vertical displacement of the photovoltaic panel 2, provides sufficient downward pressure for the water injection counterweight, and has excellent wind load and vibration resistance, preventing the module from tipping over or shifting; the automatic exhaust sealing cover 12 has both normal sealing and high-pressure automatic exhaust functions, which not only prevents water leakage, but also prevents the counterweight base 1 from deforming and being damaged due to excessive air pressure. No manual intervention is required for maintenance, ensuring long-term stable use of the base, and the overall structure can be reused to adapt to different scenario relocation and module replacement needs.

[0034] See Figures 1 to 6 As shown, the counterweight base 1 is a base cylinder with a trapezoidal cross-section. The inclination angle of the base cylinder is a preset fitting angle, and the weight after being filled with water is a preset counterweight weight.

[0035] The trapezoidal cross-section structure can disperse lateral external forces, improve the overall anti-tipping ability, and prevent the base from tilting due to wind or vibration; the preset tilt angle is consistent with the optimal light-receiving angle of the photovoltaic panel 2 to ensure solar energy reception efficiency; the base cylinder is designed with specific dimensions to support the weight of the components and the water-filled counterweight, while facilitating transportation and on-site arrangement; the preset counterweight weight after being filled with water provides sufficient foundation pressure for the base, and the friction with the mounting surface achieves stable fixation.

[0036] This invention simplifies the structure by using a single water body counterweight to quickly fix the base while ensuring power generation efficiency. It eliminates the need for additional heavy equipment, reducing installation difficulty and construction costs. The trapezoidal structure further enhances the stability of use in complex environments.

[0037] See Figures 2 to 4As shown, the fixing clip 13 is a plastic clamp 131. The height of the plastic clamp 131 matches the thickness of the photovoltaic panel 2 and is used to clamp the lower side edge of the photovoltaic panel 2.

[0038] The plastic clamp 131 is integrally formed with the counterweight base 1, resulting in a stable structure without any splicing gaps. Its height is precisely matched with the thickness of the photovoltaic panel 2, allowing the lower edge of the module to be completely inserted into the clamp, thus restricting the displacement of the module on that side from both the horizontal and vertical directions.

[0039] This invention secures the components firmly with plastic clamps 131, preventing any looseness or gaps. This avoids lateral shifting or shaking of the components after installation due to external forces such as vibration or wind. At the same time, the soft texture of the plastic material prevents scratches on the edges of the photovoltaic panel 2, protecting the integrity of the components.

[0040] See Figure 3 , Figure 6 and Figure 7 As shown, the counterweight base 1 has a thickened mounting position 16 on the higher side, and a mounting groove 161 is provided on the side of the thickened mounting position 16 away from the fixed snap-fit ​​part 13. The movable pressing part 14 is a metal clamp 141, and the metal clamp 141 is detachably connected to the mounting groove 161 by fasteners 142.

[0041] The thickened mounting position 16 enhances the load-bearing strength and deformation resistance of the part by increasing the local material thickness, and can stably withstand the clamping force transmitted by the metal clamp 141. The metal clamp 141 has high strength characteristics and is detachably connected to the mounting groove 161 through the fastener 142, forming a two-way positioning structure with the fixed snap-fit ​​part 13 to lock the component together.

[0042] The metal clamp 141 of the present invention has high strength and strong fixing reliability, and can maintain a tight state for a long time. The thickened mounting position 16 avoids deformation or damage after being subjected to force, thus extending the service life of the base. The detachable design facilitates the disassembly, installation, maintenance and replacement of photovoltaic panels 2, adapts to the installation requirements of photovoltaic panels 2 of different specifications, and improves versatility.

[0043] See Figure 6 and Figure 7 As shown, the fastener 142 is a screw, and one end of the metal clamp 141 is inserted into the mounting groove 161 and matches the internal contour of the mounting groove 161. The mounting groove 161 has a pre-set screw hole 1611, and the insertion end of the metal clamp 141 has a through hole 1411 that is adapted to the screw.

[0044] The metal clamp 141 is inserted into the mounting groove 161, and the contour is matched. After insertion, it is accurately positioned to avoid misalignment during installation. At this time, the through hole 1411 of the metal clamp 141 is aligned with the screw hole 1611. The screw passes through the through hole 1411 and engages with the screw hole 1611. After tightening, a continuous and stable axial clamping force is generated, which firmly fixes the metal clamp 141 in the mounting groove 161, thereby closely fitting the higher edge of the photovoltaic module and limiting the horizontal displacement and vertical sway of the module.

[0045] The present invention uses screws and screw holes 1611 to connect the components, which are not prone to loosening due to factors such as vibration and temperature changes, thus ensuring the long-term stable installation of photovoltaic modules.

[0046] See Figure 2 , Figure 5 , Figure 7 , Figure 8 and Figure 9 As shown, the automatic exhaust sealing cover 12 includes a cover body 121, a partition 122, a conical plug 123, and a return spring 124. The partition 122 is disposed inside the cover body 121 and forms an exhaust chamber 1211. An exhaust port 1212 through the exhaust chamber 1211 is opened on the side wall of the cover body 121. An air inlet 1221 is provided at the center of the partition 122. The conical plug 123 is disposed in the exhaust chamber 1211 and can cover the air inlet 1221. One end of the return spring 124 is connected to the side of the conical plug 123 away from the air inlet 1221, and the other end of the return spring 124 is connected to the inner top of the cover body 121. The return spring 124 is always in a pre-compressed state. The exhaust chamber 1211 of the cover body 121 is provided with a channel 125 for the conical plug 123 to move in a limited position. Several air guide holes 1251 are opened on the channel 125.

[0047] Under normal conditions, the return spring 124 outputs a stable elastic force, pushing the conical plug 123 to tightly fit against the end face of the air inlet 1221 of the partition 122, forming a reliable seal and preventing moisture leakage from the counterweight base 1. The limiting channel 125 of the exhaust chamber 1211 inside the cover 121 provides guidance for the conical plug 123, preventing the plug from shifting and causing seal failure or poor exhaust. When high-pressure gas is generated inside the counterweight base 1 due to water temperature fluctuations, microbial metabolism, or the expansion of residual air, the gas pressure acts on the conical plug 123, overcoming the return spring 124. 24. The spring force pushes the plug to move away from the air inlet 1221 along the channel 125, opening the air inlet 1221. After the high-pressure gas enters the exhaust chamber 1211 through the air inlet 1221, it quickly diffuses to the entire exhaust chamber 1211 through several air guide holes 1251 on the channel 125, and finally is efficiently discharged from the exhaust port 1212 on the side wall of the cover 121. When the internal air pressure drops to the normal range, the reset spring 124 pushes the conical plug 123 to reset along the limiting channel 125, and re-tightens the air inlet 1221 to restore the seal.

[0048] This invention, through the coordinated design of the limiting channel 125 and the air guide hole 1251, not only ensures the accuracy of the movement of the conical plug 123, but also improves the exhaust efficiency and avoids the retention of high-pressure gas; the fitting and sealing between the conical plug 123 and the air inlet hole 1221 is reliable, effectively preventing water leakage and ensuring the stability of the water-filled counterweight; the self-adaptive switching between sealing and exhaust can be achieved without manual intervention, completely avoiding the risk of bulging and deformation of the base cylinder due to excessive internal pressure, extending the service life of the base and reducing maintenance costs.

[0049] See Figure 5 and 9 As shown, the cover 121 is connected to the water inlet 11 by a threaded connection, and the inner wall of the cover 121 is provided with an annular sealing gasket 1213 that fits against the outer wall of the water outlet.

[0050] The threaded connection between the cover 121 and the water inlet 11 facilitates disassembly and assembly while ensuring a tight connection; the annular sealing gasket 1213 further enhances the sealing performance of the mating surfaces of the cover 121 and the water inlet 11, forming a double sealing protection.

[0051] The cover 121 of the present invention is easy to assemble and disassemble, and is convenient for subsequent water replenishment and maintenance; and the sealing reliability is improved by the conical plug 123 and the annular sealing gasket 1213.

[0052] See Figure 5 , Figure 8 and Figure 9 As shown, the exhaust port 1212 is evenly distributed along the circumference of the cover 121, and the conical plug 123 is made of elastic and wear-resistant material.

[0053] The vent 1212 is evenly distributed around the circumference of the cover 121 to ensure that air can be discharged quickly and evenly when water is injected, avoiding local venting obstruction; the conical plug 123 made of elastic and wear-resistant material can better fill the gap when it fits the air guide hole 1251, improve the sealing effect, and at the same time have good wear resistance and anti-aging properties, extending service life.

[0054] The friction coefficient between the bottom surface of the counterweight base 1 and the concrete installation surface is a preset friction coefficient, which is compatible with the photovoltaic panel 2 of preset specifications.

[0055] The bottom surface of the counterweight base 1 is specially treated to keep the coefficient of friction between it and the mounting surface within a preset range. This coefficient of friction ensures that the base will not slide randomly under normal use conditions, and that the base can be moved by applying a certain external force when the installation position needs to be adjusted. The size of the photovoltaic panel 2 with preset specifications matches the positioning components and bearing surface size of the counterweight base 1 to ensure that the components can be placed stably and accurately positioned.

[0056] See Figure 10The photovoltaic panels 2 are mostly installed outdoors. After the photovoltaic panels 2 are installed, because they are tilted, when the wind is strong, the wind enters the bottom of the photovoltaic panels 2 from the movable clamping part 14 and exerts a thrust on the photovoltaic panels 2. This thrust will cause the photovoltaic panels 2 to have an upward tendency, which may cause the photovoltaic panels 2 and the counterweight base 1 to be overturned. In order to minimize the possibility of this situation, wing plates 15 are provided on both sides of the counterweight base 1. The wing plates 15 are plates that extend from the counterweight base 1 to both sides, and the tilt direction of the wing plates 15 is opposite to the tilt direction of the photovoltaic panels 2. By setting the wing plates 15, when the bottom of the photovoltaic panels 2 is subjected to the thrust of the wind, the wind will also act on the wing plates 15. At this time, a downward force will be generated on the wing plates 15, which will offset part of the upward force on the photovoltaic panels 2 to a certain extent, reducing the possibility of the whole being overturned by the wind. Furthermore, since the photovoltaic panel 2 is inclined from top to bottom from the movable clamping part 14 to the fixed snap-fit ​​part 13, it is not easy for wind to enter the area below the photovoltaic panel 2 from the side of the fixed snap-fit ​​part 13. Therefore, the wing plate 15 is less likely to be subjected to the thrust of the wind and the thrust is applied upward to the whole. Moreover, when the wind blows from the side of the fixed snap-fit ​​part 13, the force acting on the top of the photovoltaic panel 2 will be greater, which will make the photovoltaic panel 2 press tightly against the counterweight base 1, thus increasing the overall stability.

[0057] The wing plate 15 can be directly connected to the counterweight base 1 as a whole by integral molding, or the wing plate 15 can be installed by setting the wing plate base 17 on the counterweight base 1. When the wing plate base 17 is used to install the wing plate 15, the size of the wing plate 15 can be changed according to actual needs.

[0058] The wing plate base 17 can be integrally formed with the counterweight base 1. A clamping mechanism that can clamp the wing plate 15 can be provided on the wing plate base 17, or the wing plate 15 can be directly installed by bolts through threaded holes in the wing plate base 17 and the wing plate 15.

[0059] like Figure 11 As shown, by manually rotating the rotary handle 171, the clamping rod 172 can be moved on the wing plate base 17, thereby controlling the contact piece 173 to clamp the wing plate 15.

[0060] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A water-filled solar photovoltaic panel mounting base structure, characterized in that, The device includes a hollow counterweight base (1) with a preset tilt angle. The counterweight base (1) has a water inlet (11) at its higher end. The water inlet (11) is equipped with an automatic exhaust sealing cap (12). The tilted surface of the counterweight base (1) is provided with two sets of positioning components. One set is a fixed snap-fit ​​part (13) integrally formed with the counterweight base (1), and the other set is a movable clamping part (14) that can be detachably connected. The two sets of positioning components are respectively adapted to the positioning of the two sides of the photovoltaic panel (2) in the tilted state.

2. The water-filled solar photovoltaic panel mounting base structure according to claim 1, characterized in that, The counterweight base (1) is a base cylinder with a trapezoidal cross section. The tilt angle of the base cylinder is a preset fitting angle, and the weight after being filled with water is a preset counterweight weight.

3. The water-filled solar photovoltaic panel mounting base structure according to claim 1, characterized in that, The fixing clip (13) is a plastic clamp (131), the height of which matches the thickness of the photovoltaic panel (2) and is used to clamp the lower side edge of the photovoltaic panel (2).

4. The water-filled solar photovoltaic panel mounting base structure according to claim 1, characterized in that, The counterweight base (1) has a thickened mounting position (16) on the higher side. The thickened mounting position (16) has a mounting groove (161) on the side away from the fixed snap-fit ​​part (13). The movable pressing part (14) is a metal clamp (141). The metal clamp (141) is detachably connected to the mounting groove (161) by a fastener (142).

5. The water-filled solar photovoltaic panel mounting base structure according to claim 4, characterized in that, The fastener (142) is a screw. One end of the metal clamp (141) is inserted into the mounting groove (161) and matches the internal contour of the mounting groove (161). The mounting groove (161) has a pre-set screw hole (1611). The insertion end of the metal clamp (141) has a through hole (1411) that is compatible with the screw.

6. The water-filled solar photovoltaic panel mounting base structure according to claim 1, characterized in that, The automatic exhaust sealing cover (12) includes a cover body (121), a partition (122), a conical plug (123), and a return spring (124). The partition (122) is located inside the cover body (121) and forms an exhaust chamber (1211). An exhaust port (1212) is provided on the side wall of the cover body (121) to pass through the exhaust chamber (1211). An air inlet (1221) is provided at the center of the partition (122). The conical plug (123) is located inside the exhaust chamber (1211) and can cover the exhaust chamber. The cover has an air inlet (1221). One end of the return spring (124) is connected to the side of the conical plug (123) away from the air inlet (1221). The other end of the return spring (124) is connected to the inner top of the cover (121). The return spring (124) is always in a pre-compressed state. The exhaust chamber (1211) of the cover (121) is provided with a channel (125) for the conical plug (123) to move in a limited position. Several air guide holes (1251) are opened on the channel (125).

7. The water-filled solar photovoltaic panel mounting base structure according to claim 6, characterized in that, The cover (121) is connected to the water inlet (11) by a threaded connection, and the inner wall of the cover (121) is provided with an annular sealing gasket (1213) that fits against the outer wall of the water outlet.

8. The water-filled solar photovoltaic panel mounting base structure according to claim 6, characterized in that, The exhaust port (1212) is evenly distributed along the circumference of the cover (121), and the conical plug (123) is made of elastic and wear-resistant material.

9. The water-filled solar photovoltaic panel mounting base structure according to claim 1, characterized in that, The counterweight base (1) has outwardly extending wing plates (15) on both sides, which are opposite to the tilt direction of the photovoltaic panel (2).

10. A water-filled solar photovoltaic panel mounting base structure according to claim 9, characterized in that, The wing plate (15) is installed via the wing plate base (17).

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