Fixed photovoltaic panel support vibration monitoring device

Abstract

The utility model discloses a fixed photovoltaic panel support vibration monitoring devices, including vibration sensor subassembly, fixed clamping subassembly, vibration sensor subassembly includes vibration sensor, contains casing, and contains casing includes base, cover, a plurality of countersunk screw, the opening side cover of cover is established at the outer side of bottom plate, and the fixed setting of photovoltaic panel support has contact boss, and this contact boss enters the opening, and the sensing head of vibration sensor enters the opening, and the front end of vibration sensor sensing head and contact boss form the abutment, and the clearance between the outer peripheral wall and the inner wall of opening is kept. The sensing head of vibration sensor in the device directly abuts with the contact boss fixed on the support, realizes the direct transmission of vibration energy. Meanwhile, the clearance design between the sensing head outer periphery and the mounting hole effectively isolates the static stress and non-axial coupling vibration that the sensor casing bears due to installation locking or support deformation, improves the accuracy and authenticity of vibration signal measurement.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation facility condition monitoring technology, specifically to a vibration monitoring device for fixed photovoltaic panel supports. Background Technology

[0002] With the large-scale application of photovoltaic power generation, the structural safety and long-term reliability of fixed photovoltaic panel support systems have received increasing attention. Support systems vibrate under wind loads, snow loads, earthquakes, and daily environmental excitations. Continuous abnormal vibrations can lead to loosening of connectors, fatigue damage, or even structural failure. Therefore, vibration monitoring of key components of the support system is of great significance.

[0003] Currently, common vibration sensor installation methods mostly employ magnetic bases, adhesive bonding, or cable ties. However, photovoltaic brackets are typically made of coated or anodized aluminum alloy profiles, resulting in weak and unstable magnetic adsorption. Adhesive bonding suffers from adhesive aging, poor weather resistance, and difficulty in disassembly and maintenance. Cable ties are also prone to aging. These methods are insufficient for maintaining a rigid connection between the sensor and the bracket and for effectively transmitting vibration signals over extended periods. Furthermore, the sensor itself is exposed to the elements, making it susceptible to damage from rain, dust, and mechanical impacts. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a vibration monitoring device for a fixed photovoltaic panel support.

[0005] The technical solution for realizing this utility model is as follows: A vibration monitoring device for a fixed photovoltaic panel support includes a vibration sensor assembly and a fixing clamping assembly for clamping the vibration sensor assembly onto the photovoltaic panel support. The vibration sensor assembly includes a vibration sensor and a housing for holding the vibration sensor. The housing includes a base, a cover, and several countersunk screws; The outer side of the base plate is adapted to the side profile of the photovoltaic panel bracket, and the center of the base has an opening that runs through the inner and outer sides of the base plate. The casing has an opening on one side, forming an internal storage space; The opening side of the cover is placed on the outer side of the base plate, and several countersunk screws pass through the base plate from the outer side of the base plate and protrude from the inner side of the base plate to form a threaded connection with the side edge of the opening side of the cover. A contact boss is fixedly installed on the photovoltaic panel support. The contact boss extends into the opening, and the sensing head of the vibration sensor extends into the opening. The front end of the vibration sensor sensing head abuts against the contact boss, and a gap is maintained between the outer peripheral wall and the inner wall of the opening.

[0006] In a further embodiment, to enhance the protection level, a first sealing ring is fitted around the outer periphery of the contact boss. After the contact boss extends into the opening, the first sealing ring comes into contact with the inner wall of the opening.

[0007] In a further embodiment, in order to accurately position and fix the vibration sensor, a positioning sleeve is fixedly provided on the bottom wall inside the housing, and a positioning groove is formed on the inner circumference of the positioning sleeve to adapt to the bottom of the vibration sensor; an annular pad is fitted on the front of the vibration sensor, and the annular pad contacts the inner side of the base.

[0008] In a further embodiment, to enhance the sealing performance of the housing itself, an annular platform extending toward the housing is fixedly provided on the periphery of the inner side of the base. The outer circumferential surface of the annular platform fits against the inner circumferential surface of the housing, and a second sealing ring is provided between the outer circumferential surface of the annular platform and the inner circumferential surface of the housing.

[0009] In a further design, the photovoltaic panel support is a rectangular cross-section support profile; The fixing and clamping assembly includes a clamping block and a locking bolt. The clamping block and the base are located on opposite sides of the photovoltaic panel bracket. The locking bolt locks the clamping block and the base onto the photovoltaic panel bracket.

[0010] In a further embodiment, the clamping block and the base are rectangular plate structures of the same size, and four locking bolts are provided, which connect the four corners of the clamping block and the four corners of the base respectively.

[0011] In a further embodiment, a support component is fitted onto the locking bolt. After the clamping block and the base are connected in place, the two ends of the support component contact the side of the clamping block and the side of the base, respectively.

[0012] By adopting the above technical solution, this application has the following technical effects: The vibration sensor head in this device directly abuts against the contact boss fixed on the bracket, enabling direct transmission of vibration energy. Simultaneously, the gap design between the outer periphery of the sensor head and the mounting hole effectively isolates the static stress and non-axial coupling vibration experienced by the sensor housing due to installation tightening or bracket deformation, thus improving the accuracy and reliability of vibration signal measurement.

[0013] The housing in this device provides protection for the vibration sensor. The double-sealing design (first sealing ring and second sealing ring) ensures the airtightness of the device, effectively preventing rainwater, moisture and dust from entering, and meeting the requirements for long-term use in harsh outdoor environments.

[0014] This device uses a back-to-back clamping block and base design, forming a strong mechanical clamping force through locking bolts. It is suitable for bracket profiles with various surface treatments, and the installation firmness is much higher than that of magnetic or adhesive methods.

[0015] This device adopts a split housing design (base and cover), which facilitates the installation, positioning (through positioning sleeve) of vibration sensors and subsequent calibration and replacement. The overall device has a modular structure, making installation and disassembly simple and maintenance costs low. Attached Figure Description

[0016] Figure 1 This is a side view of the present invention. Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention; The markings in the attached diagram are as follows: 10. Vibration sensor assembly 11. Fixing and clamping assembly 12. Vibration sensor 13. Housing 14. Base 15. Cover 16. Countersunk screws 17. Opening 18. Contact boss 19. First sealing ring 20. Positioning sleeve 21. Circular gasket 22. Circular truncated cone 23. Second sealing ring 24. Clamping block 25. Locking bolts 26. Support components 27. Cable 28. Photovoltaic panel support Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0018] Please see Figure 1-3As shown, the fixed photovoltaic panel support vibration monitoring device is mainly used to monitor the vibration state of the photovoltaic panel support 28 (usually an aluminum alloy rectangular profile) of the fixed photovoltaic array. It includes a vibration sensor assembly 10 and a fixing clamping assembly 11 for clamping the vibration sensor assembly 10 onto the photovoltaic panel support 28. The fixing clamping assembly 11 is used to firmly install the entire device onto the photovoltaic panel support 28. The vibration sensor assembly 10 includes a vibration sensor 12 and a housing 13 for placing the vibration sensor 12. The vibration sensor 12 is selected from the prior art as a sensor with a detection head.

[0019] The housing 13 includes a base 14, a cover 15, and several countersunk screws 16, all made of stainless steel. The outer side of the base plate is adapted to the side profile of the photovoltaic panel bracket 28, so that it can fit the photovoltaic panel bracket 28 well. That is, the inner side of the base 14 (the side closest to the photovoltaic panel bracket 28) is processed into a shape that adapts to the outer side of the bracket to increase the contact area and improve stability. There is an opening 17 in the center of the base 14 that penetrates the inner and outer sides of the base plate.

[0020] The housing 15 has an opening on one side, forming an internal accommodating space. The opening side of the housing 15 covers the outer side of the base plate. Several countersunk screws 16 pass through the base plate from the outer side of the base plate and protrude from the inner side of the base plate to form a threaded connection with the side edge of the opening side of the housing 15, so as to form a sealed accommodating space between the housing 15 and the seat. In this way, when the housing 13 is installed as a whole on the photovoltaic panel bracket 28, from the outer side of the base plate, the connection and fixing point between the base plate and the housing 15 is lower than the outer side of the base plate, which will not affect the subsequent installation of the housing 13.

[0021] A contact boss 18 is fixedly installed on the photovoltaic panel bracket 28. The contact boss 18 extends into the opening 17, and the sensing head of the vibration sensor 12 extends into the opening 17. The front end of the sensing head of the vibration sensor 12 abuts against the contact boss 18, and a gap is maintained between the outer peripheral wall and the inner wall of the opening 17 to facilitate the insertion of the sensing head of the vibration sensor 12 into the opening 17. The contact boss 18 is a metal column block, which is pre-fixed vertically on the side of the photovoltaic panel bracket 28 where the vibration needs to be monitored by welding. Its installation height must be ensured so that when the entire monitoring device is installed in place by the fixing clamp assembly 11, the contact boss 18 can just extend into the central opening 17 of the base 14.

[0022] In one embodiment, a first sealing ring 19 is provided around the outer periphery of the contact boss 18. After the contact boss 18 extends into the opening 17, the first sealing ring 19 forms contact with the inner wall of the opening 17 to seal the contact boss 18 and the base 14. Specifically, a sealing groove for accommodating the first sealing ring 19 is formed on the upper edge of the opening of the base 14 and / or on the outer peripheral wall of the contact boss 18.

[0023] In one embodiment, a positioning sleeve 20 is welded and fixed to the bottom wall of the housing 13. The positioning sleeve 20 has a positioning groove on its inner circumference that adapts to the bottom of the vibration sensor 12. An annular pad 21 is fitted on the front of the vibration sensor 12, and the annular pad 21 contacts the inner side of the base 14. The positioning sleeve 20 is used to position the bottom of the vibration sensor 12 housing, and the annular pad 21 is used to limit the front of the vibration sensor 12 housing. By adjusting the thickness of the annular pad 21, when the housing 13 is assembled as a whole, the lower surface of the annular pad 21 fits the outer wall of the front end of the vibration sensor 12 housing, and the upper surface fits the inner side of the base 14. Of course, to better achieve the limiting effect, a stepped edge is designed on the outer circumference of the lower surface of the annular pad 21 to lock the outer wall of the front end of the vibration sensor 12 housing. Alternatively, an annular stepped groove can be designed between the upper surface of the annular pad 21 and the inner side of the base 14 to lock the annular pad 21, thereby enhancing its limiting ability for the vibration sensor 12 housing.

[0024] In one embodiment, an annular platform 22 extending toward the inner periphery of the inner side of the base 14 is fixedly provided. The size of the outer peripheral wall of the annular platform 22 is adapted to the size of the inner peripheral wall of the housing 13. The outer peripheral surface of the annular platform 22 fits against the inner peripheral surface of the housing 13. A second sealing ring 23 is provided between the outer peripheral surface of the annular platform 22 and the inner peripheral surface of the housing 13 to seal the mating surface between the base 14 and the housing 13.

[0025] In one embodiment, the internal space of the housing 13 can be designed according to the external shape of the vibration sensor 12, such as a circular cavity or a square cavity. The external contour of the housing 13 can also be designed to fit the shape.

[0026] In one embodiment, the photovoltaic panel support 28 is a rectangular cross-section support profile, which is mainly a rectangular structure for most of the photovoltaic panel support 28; the fixing clamping assembly 11 includes clamping blocks 24 and locking bolts 25. The clamping blocks 24 and the base 14 are located on both sides of the photovoltaic panel support 28, and the locking bolts 25 lock the clamping blocks 24 and the base 14 onto the photovoltaic panel support 28. The base 14 and the clamping blocks 24 are locked to both sides of the photovoltaic panel support 28 by the locking bolts 25; two locking nuts are provided on the locking bolts 25 to enhance the locking capacity. At the same time, a threaded bolt protective cap (the inner wall of the protective cap has threads, forming a threaded connection with the bolt) can be added to the front end of the locking bolts 25 to further ensure the locking force.

[0027] In one embodiment, the clamping block 24 and the base 14 are rectangular plate structures of the same size. Four locking bolts 25 are provided, connecting the four corners of the clamping block 24 and the four corners of the base 14. The clamping block 24 and the base 14 are made of stainless steel plates with a certain thickness, ensuring that they do not deform after the bolts lock them onto the photovoltaic panel bracket 28, thus maintaining clamping capability for a long time. The clamping blocks 24 can be divided into two, arranged one above the other, with each clamping block 24 corresponding to two bolts, each connecting to the base 14.

[0028] In one embodiment, a support member 26 is fitted onto the locking bolt 25. After the clamping block 24 and the base 14 are connected in place, the two ends of the support member 26 contact the sides of the clamping block 24 and the base 14, respectively. The support member 26 is a support sleeve, which is fitted onto the middle section of the locking bolt 25, located between the base 14 and the clamping block 24. The length of the support member 26 is slightly less than or equal to the width of the photovoltaic panel bracket 28. Its main purpose is to prevent the deformation of the base 14 and the clamping block 24 from being reduced under the tightening force of the bolt. After the clamping block 24 and the base 14 are firmly assembled onto the photovoltaic panel bracket 28 by bolts, the two ends of the support member 26 are in contact with the base 14 and the clamping block 24, forming a certain degree of support and avoiding deformation at the bolt penetration points of the clamping block 24 and the base 14 after long-term use.

[0029] The working principle of this utility model is as follows: When the photovoltaic panel support 28 vibrates due to external forces such as wind or earthquake, the vibration is transmitted to the contact boss 18 through the support body. Since the contact boss 18 is in direct rigid contact with the sensor head, the vibration is converted into an electrical signal inside the sensor with high fidelity. The signal is transmitted to the data acquisition unit that forms a data connection with the vibration sensor 12 through the cable 27 led out from the housing 15 (which can be led out of the housing 13 through a waterproof connector in the prior art), and is then analyzed and processed by the data acquisition unit.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A vibration monitoring device for a fixed photovoltaic panel support, comprising a vibration sensor assembly and a fixing clamping assembly for mounting the vibration sensor assembly onto the photovoltaic panel support, characterized in that, The vibration sensor assembly includes a vibration sensor and a housing for holding the vibration sensor; The housing includes a base, a cover, and several countersunk screws; The outer side of the base plate is adapted to the side profile of the photovoltaic panel bracket, and the center of the base has an opening that runs through the inner and outer sides of the base plate. The casing has an opening on one side, with an internal accommodating space. The opening side of the cover is placed on the outer side of the base plate, and several countersunk screws pass through the base plate from the outer side of the base plate and protrude from the inner side of the base plate to form a threaded connection with the side edge of the opening side of the cover. A contact boss is fixedly installed on the photovoltaic panel support. The contact boss extends into the opening, and the sensing head of the vibration sensor extends into the opening. The front end of the vibration sensor sensing head abuts against the contact boss, and a gap is maintained between the outer peripheral wall and the inner wall of the opening.

2. The vibration monitoring device for a fixed photovoltaic panel support as described in claim 1, characterized in that, A first sealing ring is fitted around the outer periphery of the contact boss. After the contact boss extends into the opening, the first sealing ring makes contact with the inner wall of the opening.

3. The vibration monitoring device for a fixed photovoltaic panel support as described in claim 1, characterized in that, A positioning sleeve is fixedly installed on the bottom wall inside the housing. The positioning sleeve has a positioning groove formed on its inner circumference that is adapted to the bottom of the vibration sensor. An annular pad is fitted on the front of the vibration sensor, and the annular pad contacts the inner side of the base.

4. The vibration monitoring device for a fixed photovoltaic panel support as described in claim 1, characterized in that, An annular platform extending into the housing is fixedly provided on the periphery of the inner side of the base. The outer circumferential surface of the annular platform fits against the inner circumferential surface of the housing. A second sealing ring is provided between the outer circumferential surface of the annular platform and the inner circumferential surface of the housing.

5. The vibration monitoring device for a fixed photovoltaic panel support as described in claim 1, characterized in that, Photovoltaic panel brackets are rectangular cross-section support profiles; The fixing and clamping assembly includes a clamping block and a locking bolt. The clamping block and the base are located on opposite sides of the photovoltaic panel bracket. The locking bolt locks the clamping block and the base onto the photovoltaic panel bracket.

6. The vibration monitoring device for a fixed photovoltaic panel support as described in claim 1, characterized in that, The clamping block and the base are rectangular plate structures of the same size. There are four locking bolts, which connect the four corners of the clamping block and the four corners of the base.

7. The vibration monitoring device for a fixed photovoltaic panel support as described in claim 1, characterized in that, A support component is fitted onto the locking bolt. After the clamping block and the base are connected in place, the two ends of the support component contact the side of the clamping block and the side of the base, respectively.

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