Hoop type connecting and fixing method for balcony solar heat collecting plate

Abstract

A hoop type connecting and fixing method for a balcony solar heat collecting plate comprises the following steps that a, a lower bending clamp on the upper portion of the solar heat collecting plate is manufactured, the lower bending clamp on the upper portion of the solar heat collecting plate is an atypical L-shaped iron plate, a hoop section and a fixing section are arranged on the long edge of the L-shaped iron plate, and a screw hole is formed in the center of the hoop section so that the hoop section can be fixed to a concrete line through an expansion screw; and b, an upper bent clamp on the lower portion of the solar heat collection plate is manufactured, the upper bent clamp on the lower portion of the solar heat collection plate is an atypical infolding type L-shaped iron plate, the short edge of the infolding type L-shaped iron plate is provided with a clamping section and a limiting section, the clamping section is used for clamping, wrapping and limiting movement of the solar heat collection plate, and the limiting section is provided with an expansion screw hole. The hoop type connecting and fixing method for the balcony solar heat collecting plate has the advantages that the fixing device is simple in structure, convenient to manufacture, suitable for fixing all balcony solar heat collecting plates in residential building engineering, easy and convenient to install and capable of improving the construction efficiency of the solar heat collecting plates.

Description

Technical Field

[0001] This invention belongs to the field of building construction and installation engineering technology, specifically, it is a clamp-type connection and fixing method for balcony solar collector panels. Background Technology

[0002] With the increasing global demand for clean energy, solar energy, as a renewable and pollution-free energy source, has been widely used in hot water supply and heating. Currently, the building market is increasingly demanding green and environmentally friendly practices, energy-saving technologies are being widely applied, and residential designs are increasingly incorporating external solar water heating systems. These systems absorb solar radiation and convert it into heat energy, significantly improving energy efficiency.

[0003] With increasing urban building density and rising demands for energy conservation and emission reduction, balconies, as unused residential spaces, have become an important platform for promoting small-scale solar energy systems. The fixing of balcony solar collectors needs to balance limited space, ease of installation, structural safety, and aesthetics. Various fixing methods for solar collectors, such as clamp-on, wall-mounted, and modular bracket types, have emerged. Choosing a safe, reliable, economical, and convenient installation solution has become a key focus in solar collector installation. Therefore, in existing technologies, how to fix balcony solar collectors to fit the structural shape of existing residential walls has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a safe and reliable method for fixing balcony solar collector panels using clamps.

[0005] To achieve the above objectives, the technical solution of the present invention is: A method for fixing a balcony solar collector panel using a clamp-type connection, characterized by the following steps: a. Making the upper and lower curved clips of the solar collector plate The upper and lower bends of the solar collector plate are made of an atypical L-shaped iron plate. The long side of the L-shaped iron plate is equipped with a clamping section and a fixing section. The center of the clamping section is provided with a screw hole for fixing to the solar collector plate with screws. The fixing section is provided with an expansion screw hole for fixing to the concrete line with expansion screws. b. Making the lower upper bend clip of the solar collector panel The lower part of the solar collector panel is bent into an atypical inward-folding L-shaped iron plate. The short side of the inward-folding L-shaped iron plate is equipped with a clamping section and a limiting section. The clamping section is used to clamp and wrap the solar collector panel to restrict its movement. The limiting section is equipped with expansion screw holes to fix it to the concrete slab with expansion screws. Specifically: one end of the upper lower bend clamp is clamped to the upper part of the solar collector plate, and the collector plate is connected and fixed to the upper lower bend clamp by fastening screws; the lower upper bend clamp uses an inwardly folded L-shaped iron plate to fix the solar collector plate to the concrete slab with expansion screws. The clamp section of the lower upper bend clamp is bent towards the direction of the solar collector plate, and the bending angle is greater than the plane of the collector plate to facilitate the insertion of the collector plate.

[0006] The balcony solar collector panel clamp connection and fixing method of the present invention can also be further implemented by the following technical measures.

[0007] Preferably, the iron plate in the aforementioned method is 3mm thick and 100mm wide.

[0008] Preferably, the expansion screw hole in the aforementioned method is an elongated through hole.

[0009] Preferably, the bending angle of the clamping section and the limiting section of the short side of the inwardly folded L-shaped iron plate in the aforementioned method is 135°. This angle selection has been verified extensively and has the following beneficial effects: When subjected to external forces (such as wind pressure and vibration), the 135° inward folding angle can produce a slight "self-locking" effect, which makes the clamping section clamp the heat collection plate more tightly inward, reducing the risk of loosening or screw loosening caused by micro-vibration. Compared with the common 90° or 120° folding angle, 135° is closer to a parallel state, but with a slight clearance, which is convenient for insertion and can exert the spring clamping force of the "arch" structure after locking.

[0010] The bending moment and shear force borne at the corner are more evenly distributed at the junction of the clamp section and the fixed section after being decomposed by the 135° angle, which reduces local stress concentration and reduces the possibility of material fatigue and cracking. Compared with sharp angle bends (<120°), the gentler corner can significantly improve fatigue life, and is particularly suitable for the frequent temperature changes and wind vibration environment of balconies in large-span multi-story buildings.

[0011] The 135° angle maintains good insertion space (generally ≥20° clearance), allowing workers to slide the heat collection plate in more effort on site, unlike the "sticking" difficulty of insertion at 150° or flatter angles; it also avoids excessive stress on the clamp section at 120° or steeper angles, which can easily scratch the plate surface or cause deformation during operation.

[0012] From an appearance perspective, the clips bent at a 135° angle are almost parallel to the flat heat collection panel. After assembly, the outline is full and has little interference with visual lines, which meets the requirements of modern architecture for minimalism and aesthetics. However, if a 90° or steeper angle is used, it will form an obvious angle projection on the panel surface, which will destroy the overall appearance consistency.

[0013] Balcony environments experience large temperature differences between day and night and are frequently exposed to sun and rain. The 135° clearance design can accommodate the slight dimensional changes in the heat collection plate and metal clips caused by temperature variations, avoiding jamming or stress caused by a lack of clearance. In contrast, ordinary 180° (flat) or 90° angled structures cannot simultaneously meet the requirements of tight fit and thermal expansion and contraction.

[0014] In summary, choosing an inward folding angle of approximately 135° not only satisfies the basic function of parallel and tight fit, but also demonstrates substantial features and significant progress in terms of self-locking and anti-loosening, uniform stress distribution, convenient installation, and aesthetically pleasing structure.

[0015] In the aforementioned method, the expansion screw has a specification of Φ8mm.

[0016] After adopting the above technical solution, the clamp-type connection and fixing method for balcony solar collector panels of the present invention has the following advantages: 1. The fixing device has a simple structure and is easy to manufacture; 2. Applicable to fixing solar collectors on all balconies in residential building projects; 3. Easy to install, greatly improving the construction efficiency of solar collectors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the clamp-type connection system architecture of the solar collector panel according to an embodiment of the present invention; Figure 2 for Figure 1 Side view; Figure 3 This is a schematic diagram of the upper downward bending card in an embodiment of the present invention; Figure 4 This is a schematic diagram of the lower upper curved card in an embodiment of the present invention.

[0018] In the diagram: 1. Concrete collector panel, 2. Lower upper bend clip, 3. Solar collector panel, 4. Upper lower bend clip, 5. Expansion bolt, 6. Glass window, 7. Concrete lines, 8. Structural concrete beam. Detailed Implementation

[0019] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0020] Example 1 The residential buildings consist of 25 individual buildings, with the highest floor reaching 26 stories. There are 2,105 sets of solar water heating systems on balconies. The exterior walls of the residential buildings have cantilevered solar collector concrete slabs, and there are 100mm*100mm concrete decorative lines around the windows. The solar collectors are fixed to the solar collector concrete slab 1 and the concrete wall area below the windows. There are glass windows 6 above the structural concrete beams 8.

[0021] The balcony solar collector panel clamp connection and fixing method of the present invention includes the following steps: a. Make the upper and lower curved clips of the solar collector plate 4.

[0022] Figure 3 This is a schematic diagram of the upper downward bending clip in an embodiment of the present invention. The upper downward bending clip of the solar collector panel 3 is made of a bent L-shaped iron plate. The L-shape bend is an outward bend (i.e., backward bend). The iron plate is 3mm thick, 100mm wide, with a total length of 260mm for the long side of the L-shape and a length of 50mm for the short side of the L-shape.

[0023] The long side of the L-shaped plate is divided into a clamp section and a fixing section. The clamp section is 100mm long, the fixing section is 150mm long, and the bending part is 10mm long. There is a 135° bend between the clamp section and the fixing section on the L-shaped plate to ensure that the clamp section of the L-shaped iron plate is parallel and tightly attached to the solar collector.

[0024] The fixing section has 5 expansion screw holes, each 50mm long and 10mm wide, arranged in a long strip shape, with Φ8 expansion screws. The clamp section has 8 circular fastening screw holes, with Φ6 fastening screws.

[0025] b. Make the lower upper bend clip 2 of the solar collector panel. Figure 4 This is a schematic diagram of the lower upper bending clip in an embodiment of the present invention. The lower upper bending clip of the solar collector is also made of a bent L-shaped iron plate. The L-shape bend is an inward bend (i.e., an inward fold). The iron plate is 3mm thick, 100mm wide, with the long side of the L being 150mm and the total length of the short side of the L being 110mm.

[0026] The short side of the L-shaped plate is further divided into a clamping section and a limiting section. The clamping section is 50mm long, the limiting section is 50mm long, and the bent part is 10mm long. There is a 135° bend between the clamping section and the limiting section on the short side of the L-shaped plate. This is to ensure that the L-shaped iron plate clamping section can clamp and wrap around the solar collector, restricting its movement.

[0027] The L-shaped iron plate has expansion screw holes on its long side. The holes are round with a diameter of Φ10, and the expansion screws are Φ8.

[0028] Please see now Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the clamp-type connection system architecture of the solar collector panel according to an embodiment of the present invention; Figure 2 for Figure 1 Side view. When fixing the solar collector plate with the upper and lower bend clips, the solar collector plate is fixed to the concrete line by bending the L-shaped iron plate and using expansion screws. The front end of the upper lower bend clip is locked onto the upper part of the solar collector plate, and the collector plate is connected and fixed to the upper lower bend clip by fastening screws.

[0029] The fixed section of the bent L-shaped iron plate is tightly attached to and fixed to the structural concrete line 7 starting from the bending part. The fixing position of the expansion screw can be adjusted back and forth according to the actual situation to meet the requirements of firm fixing.

[0030] The clamp section of the bent L-shaped iron plate is used to securely connect the upper bent section to the solar collector plate with fastening screws. The length of the clamp section is the same as the thickness of the solar collector plate. The short side of the bent L-shaped iron plate clamps and wraps around the solar collector plate to restrict its movement.

[0031] When fixing the solar collector to the lower part of the upper bend, position it according to the size of the solar collector, and fix the solar collector to the concrete cantilever slab by bending the L-shaped iron plate and using expansion screws.

[0032] The clamp section of the lower upper bend is bent towards the solar collector panel, with the bending angle slightly greater than the parallel surface of the collector panel, so that the collector panel can be inserted normally.

[0033] Key points to note regarding the operation of the clamp-type connection and fixing method for balcony solar collectors according to the present invention: The fixing requirements for the lower upper bend clip are determined based on the length of the heat collector plate and the position of the upper concrete line. The cantilever plate structure in this project has been optimized to ensure that the upper upper bend clip of the heat collector plate is flush with the concrete line, and the limiting section of the lower upper bend clip is flush with the edge of the concrete cantilever plate.

[0034] The upper downward bending clip requires that it be fixed to the solar collector plate by using a bent L-shaped iron plate. The iron plate is then secured to the collector plate with fastening screws. Therefore, the angle of the bent upper downward bending clip must ensure that the clamp section is tightly fitted to the collector plate. The short side of the L-shaped iron plate should effectively wrap around the collector plate, and the gap should not be too large, preferably 1-2mm.

[0035] Example 2 This embodiment is based on embodiment 1. To further improve the sealing and vibration resistance of the card and the solar collector plate, an elastic sealing gasket made of weather-resistant rubber material can be integrally formed between the clamp section of the upper lower bending card (4) and the lower upper bending card (2) and the contact surface of the solar collector plate (3). The sealing gasket has waterproof, dustproof and vibration damping functions to prevent rainwater infiltration and wind vibration loosening.

[0036] The expansion screw holes (5) of the upper lower bend clip (4) and the lower upper bend clip (2) can be designed as long strip adjustment grooves along the length of the iron plate. The adjustment grooves allow the clips to slide in the direction of the clip plate to compensate for ±10mm of on-site installation error, thereby ensuring that the heat collection plate is in close contact with the concrete line (7) / cantilever plate.

[0037] The non-typical L-shaped iron plate (shared by the upper downward bend card and the lower upward bend card) can be treated with polytetrafluoroethylene (PTFE) powder coating on all exposed surfaces, with a coating thickness of not less than 50μm, to significantly improve the weather resistance, corrosion resistance and self-lubricating properties of the card and extend its service life.

[0038] To prevent rainwater and cleaning water from accumulating between the clip and the base layer, a water-receiving and drainage channel parallel to the horizontal plane is opened at the edge of the fixed section of the upper lower bend clip (4) and the lower upper bend clip (2). The width of the drainage channel is similar to the width of the clip, which can quickly drain water to the outside and avoid corrosion of the connection interface and concrete depression.

[0039] The installation sequence of the balcony solar collector panel clamp connection and fixing method of the present invention is as follows: 1) Determine the size of the solar collector panel; → 2) Optimize the size of the cantilever slab; → 3) Fabricate the upper lower bend clamp and the lower upper bend clamp; → 4) Position and fix the lower upper bend clamp; → 5) Place the solar collector panel; → 6) Position and fix the upper lower bend clamp; → 7) Tightly connect the upper lower bend clamp to the collector panel; → 8) Test run of the connecting conduit.

[0040] This invention has substantial features and significant technological advancements. The clamp-type connection and fixing method for balcony solar collectors of this invention uses an upper bent clamp at the bottom of the cantilevered concrete slab to limit the position of the collector, and an upper lower bent clamp at the concrete line near the window to hold the collector in place, thus fixing the entire collector. This method is safe, reliable, and easy to install.

[0041] The clamp-type connection and fixing method for balcony solar collectors of the present invention was applied in the Xiejiaji shantytown renovation project in Huainan City, with significant results, and was fully affirmed by the construction unit and the supervision unit.

[0042] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of this invention and are defined by the claims.

Claims

1. A balcony solar collector plate clamp type connection fixing method, characterized in that The method comprises the following steps: a. manufacturing a lower bending clamp for the upper part of the solar heat collecting plate The lower bending clamp for the upper part of the solar heat collecting plate is a non-typical L-shaped iron plate, the long side of the L-shaped iron plate is provided with a clamp segment and a fixed segment, the center of the clamp segment is provided with a screw hole for fixing the solar heat collecting plate with a screw, and the fixed segment is provided with an expansion screw hole for fixing the concrete line with an expansion screw; b. manufacturing an upper bending clamp for the lower part of the solar heat collecting plate The upper bending clamp for the lower part of the solar heat collecting plate is a non-typical L-shaped iron plate, the short side of the L-shaped iron plate is provided with a clamp segment and a limiting segment, the clamp segment is used for clamping and wrapping, and the limiting segment is provided with an expansion screw hole for fixing the concrete plate with an expansion screw; Wherein: one end of the upper bending clamp clamps the upper part of the solar heat collecting plate, and the heat collecting plate is connected and fixed with the upper bending clamp through a fastening screw; the lower bending clamp is fixed on the concrete plate with the solar heat collecting plate through the expansion screw of the L-shaped iron plate, the clamp segment of the lower bending clamp is bent towards the direction of the solar heat collecting plate, and the bending angle is greater than the plane of the heat collecting plate, so that the heat collecting plate is inserted.

2. The balcony solar collector plate clamp type connection fixing method according to claim 1, characterized in that, The fixed segment of the upper bending clamp is provided with a long strip-shaped through hole which can extend along the length direction, so as to realize the fine adjustment of the position between the heat collecting plate and the concrete line during installation.

3. The balcony solar collector panel clamp-type connection fixing method according to claim 1, characterized in that, The inner folding angle between the clamp segment and the limiting segment of the lower bending clamp is about 135°, which enables the clamp segment to be close to the heat collecting plate while providing an insertion space to simplify the installation operation.

4. The balcony solar collector panel clamp-type connection fixing method according to claim 1, characterized in that, The length of the clamp segment of the upper bending clamp matches the thickness of the solar heat collecting plate, so as to ensure that a wrapping support structure is formed after installation, and the shaking and displacement of the heat collecting plate are limited.

5. The balcony solar collector panel clamp-type connection fixing method according to claim 1, characterized in that, The lower bending clamp is installed at the edge position of the concrete overhanging plate, and is arranged flush with the edge of the overhanging plate through the limiting segment, so as to provide an installation reference and improve the structural stability.

6. The clamp segment of the upper bending clamp is fixed with the heat collecting plate through a fastening screw, and the bending angle thereof is maintained within the gap range of 1-2mm between the outer surface of the clamp segment and the outer wall of the heat collecting plate after installation, so as to ensure the connection strength and the appearance flatness.

7. The method of claim 1, further comprising providing an integrally formed elastic sealing gasket between the contact surface between the clamp segment of the upper bending clamp and the lower bending clamp and the solar heat collecting plate, so as to realize the vibration damping, gap compensation and waterproof sealing effect.

8. The method of claim 1, wherein the expansion screw holes of the fixed segments of the upper bending clamp and the lower bending clamp are long strip-shaped adjusting grooves, the length of the adjusting grooves is designed to allow the clamp to slide in the plate surface direction within a range of ±10mm, so as to compensate for the installation tolerance on site and ensure the close fit.

9. The method of claim 1, further comprising performing a polytetrafluoroethylene (PTFE) powder spraying treatment on all surfaces of the non-typical L-shaped iron plate with a thickness of not less than 50μm, so as to significantly improve the weather resistance, corrosion resistance and self-lubricating performance.

10. The method of claim 1, wherein a water drainage groove parallel to the horizontal plane is opened at the edge of the fixed segment of the upper bending clamp and the lower bending clamp, so as to quickly drain water during rainfall or cleaning, prevent water retention and recess corrosion at the connection interface.

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