Photovoltaic power station electrical heat dissipation control device

Abstract

The application relates to the technical field of electrical control equipment, in particular to a photovoltaic power station electrical heat dissipation control equipment which comprises a photovoltaic electrical control cabinet, a driving assembly, a heat dissipation control assembly, a first linkage unfolding assembly and a second linkage unfolding assembly; the driving assembly comprises metal sleeves which are symmetrically fixedly installed on the inner top of the photovoltaic electrical control cabinet, a metal push rod is slidably installed on the lower side of the metal sleeve, and the metal sleeve is filled with silicon oil; the heat dissipation control assembly comprises a connecting strut and an outer cylinder, a structure ring is fixedly connected to the side edge of the connecting strut, and a sliding rod is slidably inserted into the center of the structure ring. The driving assembly and the heat dissipation control assembly are provided, the whole process adopts the expansion of a heat-sensitive material as a driving force, the heat dissipation circuit is completed by mechanical driving, is different from the electrical equipment circuit for controlling photovoltaic, is not affected by the electrical equipment failure and the related controller failure, can automatically start the heat dissipation work when the temperature rises, and is high in reliability.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electrical control equipment, in particular to a photovoltaic power station electrical heat dissipation control device. BACKGROUND

[0002] At present, the heat dissipation of the electrical equipment of a photovoltaic power station depends on a traditional electrical sensor temperature control scheme, that is, a temperature sensor collects a cabinet temperature signal, the temperature signal is transmitted to a controller for analysis and judgment, and then the heat dissipation fan is controlled to start or stop. However, the scheme has obvious limitations: on the one hand, the heat dissipation control logic depends on the cooperative work of the electrical sensor and the controller. If the sensor fails or the controller is affected by the abnormal electrical equipment, the heat dissipation function will be invalid, and the temperature change cannot be responded in time. On the other hand, the heat dissipation circuit of the scheme is often associated with the main circuit of the electrical equipment for controlling photovoltaic. When the main circuit fails, the heat dissipation system may also be paralyzed, and it is difficult to realize independent and reliable temperature control effect, so the high requirements of the photovoltaic power station on the long-term stable operation of the electrical control equipment cannot be met. In order to solve the above problems, the application provides a photovoltaic power station electrical heat dissipation control device. SUMMARY

[0003] The application aims at solving the defects in the prior art and provides a photovoltaic power station electrical heat dissipation control device.

[0004] In order to achieve the above object, the application adopts the following technical scheme:

[0005] A photovoltaic power station electrical heat dissipation control device, comprising a photovoltaic electrical control cabinet, a driving assembly, a heat dissipation control assembly, a first linkage unfolding assembly and a second linkage unfolding assembly. The driving assembly comprises metal sleeves, two metal sleeves are symmetrically fixedly installed on the inner top of the photovoltaic electrical control cabinet, a metal push rod is slidably installed on the lower side of the metal sleeve, the metal sleeve is filled with silicon oil, the heat dissipation control assembly comprises a connecting strut and an outer cylinder, a structural ring is fixedly connected to the side edge of the connecting strut, a slide rod is slidably inserted into the center of the structural ring, a sleeve rod is slidably sleeved on the outer side of the lower end of the slide rod, an upper disc is fixedly installed on the lower end of the sleeve rod, a lower disc is fixedly installed on the inner bottom of the outer cylinder, the upper disc is slidably arranged on the inner side of the outer cylinder, an upper plug is electrically connected to the upper side of the upper disc, and a lower plug is electrically connected to the lower side of the lower disc.

[0006] In the application, the first linkage unfolding assembly comprises a structural plate and a louver frame, the structural plate is fixedly installed on the lower end of the metal push rod, a dovetail groove is formed in the lower side of the structural plate, a dovetail block is slidably connected in the inner side of the dovetail groove, a hanging rod is fixedly connected to the lower side of the dovetail block, a plurality of louver blades are rotatably installed in the inner side of the louver frame, notches are symmetrically formed in the rear side of the louver blades, and the hanging rod is hingedly connected to the notches.

[0007] In the application, the second linkage unfolding assembly comprises cambered bending turning plates, a water deflector is fixedly connected between the outer side ends of the two cambered bending turning plates, long circular grooves are laterally formed in the inner side ends of the cambered bending turning plates, and fixed pins are rotatably inserted into the long circular grooves.

[0008] In the application, the photovoltaic electrical control cabinet is provided with a cabinet door rotatably installed at the front port, a lock handle fixedly installed on the cabinet door, a gasket fixedly installed at the bottom of the photovoltaic electrical control cabinet, a dustproof and heat dissipation ventilation port formed at the right side of the photovoltaic electrical control cabinet, a rain cover fixedly installed on the upper side of the dustproof and heat dissipation ventilation port, four insulating columns fixedly installed at the bottom of the inner side of the photovoltaic electrical control cabinet, an electrical mounting plate seat fixedly installed at the top of the insulating columns, and a plurality of heat dissipation holes uniformly formed on the electrical mounting plate seat.

[0009] In the application, the photovoltaic electrical control cabinet is provided with a plurality of folding plates fixedly installed at the right upper side of the inner side of the photovoltaic electrical control cabinet, heat dissipation fans fixedly installed on the folding plates, heat dissipation outlets of the heat dissipation fans being obliquely downward arranged, an electricity connection socket fixedly installed on the side wall of the photovoltaic electrical control cabinet, a lower socket and an upper socket fixedly installed on the inner wall of the photovoltaic electrical control cabinet, and the electricity connection socket, the lower socket and the upper socket being electrically connected to a circuit breaker circuit.

[0010] In the application, the left side wall of the photovoltaic electrical control cabinet is provided with a mounting groove and a rotating groove.

[0011] In the application, the outer wall of the metal sleeve is densely provided with a plurality of heat transfer protrusions, a sealing piston is fixedly installed on the upper side end of the metal push rod, the sealing piston is slidably connected with the inner wall of the metal sleeve, a spring is fixedly connected between the top of the upper disc and the bottom of the structure ring, the slide rod, the sleeve rod, the spring and the outer cylinder are all made of insulating materials, an installation side plate is fixedly connected with the side edge of the outer cylinder, and the installation side plate is screwed and installed on the inner wall of the photovoltaic electrical control cabinet.

[0012] In the application, a sealing ring is fixedly sleeved on the outer side of the upper disc, the sealing ring is slidably connected with the outer cylinder, a pull cap is fixedly installed on the upper end of the slide rod, a plurality of electrode protrusions are uniformly arranged on the bottom of the upper disc, an upper plug is inserted into an upper socket, a lower plug is inserted into a lower socket, a limiting screw rod is screwed and installed on the side edge of the structure ring, and the inner side end of the limiting screw rod abuts against the outer wall of the slide rod.

[0013] In the application, the louver frame is screwed and installed on the inner side of the mounting groove, the length of the dovetail groove is greater than that of the dovetail block, a sealing corrugated plate is fixedly connected between the side edge of the dovetail block and the dovetail groove, and a plurality of reinforcing connecting blocks are fixedly connected between the dovetail block and the suspender.

[0014] In the application, the arc surface bending turn plate is rotatably installed in the inner side of the rotating groove, the water shedding plate is made of ASA engineering plastic material, the rubber sealing plate is fixedly connected between the arc surface bending turn plate and the inner wall of the rotating groove, and the water shedding plate is arranged in a downward bending mode.

[0015] Compared with the related art, the photovoltaic power station electrical heat dissipation control device has the following beneficial effects:

[0016] In the application, the driving assembly is filled with heat-sensitive material silicon oil in the metal sleeve, when the temperature of the electrical components of the photovoltaic power station is controlled to rise, the silicon oil in the metal sleeve expands due to heat, and the metal push rod moves downward due to the expansion of the heat volume, the connecting branch rod in the heat dissipation control assembly is driven to move synchronously by the metal push rod, and the structure ring, the slide rod, the sleeve rod and the upper disc are synchronously driven to move downward, so that the upper disc abuts against the lower disc at the bottom, the power-on short circuit is connected, and the heat dissipation fan is synchronously powered on to actively dissipate heat of the electrical components.

[0017] In the application, the first linkage unfolding assembly is provided, the structure plate in the first linkage unfolding assembly is directly driven by the metal push rod, when the metal push rod moves downward, the structure plate, the dovetail block at the lower side and the boom are synchronously driven to move downward, and the boom is driven to synchronously unfold the plurality of louvers, so that the heat dissipation air outlet is expanded, the sliding arrangement of the dovetail block and the dovetail groove at the lower side of the structure plate can avoid the linkage interference between the louver rotation and the boom, the entire louver and the active heat dissipation function are synchronous, the heat dissipation air outlet can be synchronously expanded during the active heat dissipation, the louver is in an inclined downward state when the active heat dissipation is not started, and the louver has good waterproof performance.

[0018] In the application, the photovoltaic power station electrical heat dissipation control device is provided with the second linkage unfolding assembly which is a rotatable unfolding type water shedding plate and is synchronously driven by the metal push rod. When the metal push rod moves downward, it will synchronously drive the cambered bending turning plate to rotate inward, and then will synchronously drive the water shedding plate connected to the outer side end to lift and unfold, so that the shielding area directly below the water shedding plate gradually expands and the waterproof performance gradually strengthens. Since the inclination angle of the unfolded louver blade gradually decreases, the waterproof performance decreases, while the waterproof performance of the synchronously lifted water shedding plate gradually strengthens, which makes up for the insufficient waterproof performance of the louver blade at the expanded heat dissipation outlet. The linkage cooperation of the design and the louver blade realizes excellent waterproof performance of the photovoltaic electrical control cabinet while meeting the heat dissipation condition, comprehensively improves the protection of the photovoltaic electrical equipment in the photovoltaic electrical control cabinet, and further strengthens the practicability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A three-dimensional structure diagram of the photovoltaic power station electrical heat dissipation control device is provided in the application Figure One ;

[0020] Figure 2 A three-dimensional structure diagram of the photovoltaic power station electrical heat dissipation control device is provided in the application Figure Two ;

[0021] Figure 3 An internal three-dimensional structure diagram of the photovoltaic power station electrical heat dissipation control device is provided in the application Figure One ;

[0022] Figure 4 An internal three-dimensional structure diagram of the photovoltaic power station electrical heat dissipation control device is provided in the application Figure Two ;

[0023] Figure 5 A three-dimensional cross-sectional structure diagram of the photovoltaic power station electrical heat dissipation control device is provided in the application

[0024] Figure 6 A three-dimensional cross-sectional structure diagram of the photovoltaic power station electrical heat dissipation control device is provided in the application

[0025] Figure 7 A three-dimensional structure diagram of part of the components of the photovoltaic power station electrical heat dissipation control device is provided in the application Figure One ;

[0026] Figure 8 A three-dimensional structure diagram of part of the components of the photovoltaic power station electrical heat dissipation control device is provided in the application Figure One ;

[0027] Figure 9It is a three-dimensional exploded structure schematic view of the interior member of the louver frame.

[0028] Figure 10 It is a three-dimensional structure schematic view of part of the electrical heat dissipation control equipment of the photovoltaic power station. Figure Two

[0029] Figure 11 It is a three-dimensional structure schematic view of part of the electrical heat dissipation control equipment of the photovoltaic power station. Figure Three

[0030] Figure 12 It is a three-dimensional exploded structure schematic view of part of the electrical heat dissipation control equipment of the photovoltaic power station. Figure Two

[0031] Figure 13 It is a three-dimensional structure schematic view of the heat dissipation control assembly.

[0032] Figure 14 It is a three-dimensional cut structure schematic view of the heat dissipation control assembly. Figure One

[0033] Figure 15 It is a three-dimensional cut structure schematic view of the heat dissipation control assembly. Figure Two

[0034] In the figure: 1, photovoltaic electrical control cabinet; 2, gasket; 3, cabinet door; 4, lock handle; 5, drive assembly; 51, metal sleeve; 52, metal push rod; 53, heat transfer protrusion; 6, heat dissipation control assembly; 61, connecting strut; 62, structure ring; 63, sliding rod; 64, sleeve rod; 65, upper disc; 66, sealing ring; 67, spring; 68, electrode protrusion; 69, outer cylinder; 610, mounting side plate; 611, lower disc; 612, upper plug; 613, lower plug; 614, limiting screw; 615, pull cap; 7, first linkage unfolding assembly; 71, structure plate; 72, boom; 73, louver frame; 74, louver blade; 75, notch; 76, dovetail groove; 77, dovetail block; 78, reinforced connecting block; 79, sealing corrugated plate; 8, second linkage unfolding assembly; 81, arc surface bent turning plate; 82, rubber sealing plate; 83, long circular groove; 84, fixed bolt; 85, water shedding plate; 9, dustproof heat dissipation vent; 10, rainproof cover; 11, power connection socket; 12, insulating column; 13, electrical mounting plate seat; 14, folding plate; 15, heat dissipation fan; 16, mounting groove; 17, turning groove; 18, lower socket; 19, upper socket. DETAILED DESCRIPTION

[0035] The application will be further described below in conjunction with the drawings and embodiments.

[0036] First embodiment: ​​​​​

[0037] Please refer to Figures 1-7 and Figures 13-15 In the first embodiment of the present application, a photovoltaic electrical control cabinet 1, a driving assembly 5, a heat dissipation control assembly 6, a first linkage unfolding assembly 7 and a second linkage unfolding assembly 8 are included; the driving assembly 5 includes a metal sleeve 51, two metal sleeves 51 are symmetrically fixedly installed on the inside top of the photovoltaic electrical control cabinet 1, a metal push rod 52 is slidably installed on the lower side of the metal sleeve 51, the metal sleeve 51 is filled with silicon oil inside, the heat dissipation control assembly 6 includes a connecting strut 61 and an outer cylinder 69, the connecting strut 61 is fixedly connected with a structural ring 62 on the side, the structural ring 62 is slidably inserted with a slide rod 63 at the center, the slide rod 63 is slidably sleeved with a sleeve rod 64 on the outer side of the lower end, the sleeve rod 64 is fixedly installed with an upper disc 65 at the lower end, the outer cylinder 69 is fixedly installed with a lower disc 611 on the inside bottom, the upper disc 65 is slidably arranged inside the outer cylinder 69, the upper disc 65 is electrically connected with an upper plug 612 on the upper side, and the lower disc 611 is electrically connected with a lower plug 613 on the lower side.

[0038] Through the above-mentioned arrangement, the heat-sensitive silicon oil filled in the metal sleeve 51 can sense the temperature change in the photovoltaic electrical control cabinet 1 in real time, and the sliding cooperation of the metal push rod 52 and the metal sleeve 51 provides basic structural protection for the heat-sensitive silicon oil; the connecting strut 61 in the heat dissipation control assembly 6 transmits the movement of the metal push rod 52 to the structural ring 62, the sliding cooperation of the slide rod 63 and the sleeve rod 64 can compensate for the installation error and the movement gap, the abutment / separation of the upper disc 65 and the lower disc 611 can accurately control the on-off of the heat dissipation circuit, and the upper plug 612 and the lower plug 613 provide a convenient interface for circuit connection, which together constitute a temperature-mechanical movement-circuit on-off non-electric sensor temperature control link.

[0039] Specifically, the cabinet door 3 is rotatably installed at the front port of the photovoltaic electrical control cabinet 1, the cabinet door 3 is fixedly installed with a lock handle 4, the photovoltaic electrical control cabinet 1 is fixedly installed with a gasket 2 at the bottom, a dust-proof heat dissipation vent 9 is formed on the right side of the photovoltaic electrical control cabinet 1, a rain cover 10 is fixedly installed on the upper side of the dust-proof heat dissipation vent 9, four insulating columns 12 are fixedly installed on the inside bottom of the photovoltaic electrical control cabinet 1, an electrical mounting seat 13 is fixedly installed on the top of the insulating column 12, and a plurality of heat dissipation holes are uniformly formed on the electrical mounting seat 13.

[0040] Through the above-mentioned arrangement, the cabinet door 3 and the lock handle 4 can realize the closed protection and convenient opening and closing of the photovoltaic electrical control cabinet 1, the gasket 2 can reduce the vibration transmission during equipment operation and avoid moisture at the bottom; the dust-proof heat dissipation vent 9 provides a natural heat dissipation channel for the cabinet, and the rain cover 10 can prevent external rainwater from penetrating through the vent; the electrical mounting seat 13 supported by the four insulating columns 12 can not only ensure the insulation of the electrical component installation and avoid the risk of electric shock, but also can accelerate the heat dissipation of the bottom of the electrical component and improve the overall heat dissipation efficiency.

[0041] It needs to be additionally pointed out here that the photovoltaic electrical equipment core includes a photovoltaic inverter, an AC contactor, a DC circuit breaker and an AC circuit breaker, a relay, a surge protector, a current sensor and a voltage sensor, which work together to ensure the stable and safe operation of the photovoltaic power station electrical system. The above are common electrical components of existing electrical control, which will not be described here. The heat dissipation control assembly 6 provided by the application is used to actively dissipate heat in cooperation with the photovoltaic electrical equipment to ensure stable operation. The electrical mounting plate seat 13 provided above is used to mount the photovoltaic electrical equipment and provides a good heat dissipation support platform for it.

[0042] Specifically, a plurality of folding plates 14 are fixedly installed on the right upper side of the photovoltaic electrical control cabinet 1, and a heat dissipation fan 15 is fixedly installed on the folding plate 14. The air outlet of the heat dissipation fan 15 is inclined downward. An electrical connection socket 11 is fixedly installed on the side wall of the photovoltaic electrical control cabinet 1. A lower socket 18 and an upper socket 19 are fixedly installed on the inner wall of the photovoltaic electrical control cabinet 1. The electrical connection socket 11, the lower socket 18 and the upper socket 19 are electrically connected to a circuit breaker circuit. An installation groove 16 and a rotating groove 17 are formed on the left side wall of the photovoltaic electrical control cabinet 1.

[0043] Through the above arrangement, the folding plate 14 provides a stable installation carrier for the heat dissipation fan 15. The heat dissipation fan 15 is inclined downward at an angle, which can direct the cold air to the electrical components on the electrical mounting plate seat 13, improving the heat dissipation specificity. The electrical connection socket 11 provides an external power input end for the entire device. The lower socket 18 and the upper socket 19 serve as intermediate interfaces of the heat dissipation circuit and together with the electrical connection socket 11 form a heat dissipation circuit independent of the photovoltaic control main circuit, ensuring that the heat dissipation system can still work independently when the main circuit fails. The installation groove 16 and the rotating groove 17 provide precise installation space for the first linkage expansion assembly 7 and the second linkage expansion assembly 8, ensuring that each component is compatible with the cabinet structure.

[0044] Specifically, a plurality of heat transfer protrusions 53 are densely arranged on the outer wall of the metal sleeve 51. A sealing piston is fixedly installed on the upper side of the metal push rod 52. The sealing piston is slidably connected to the inner wall of the metal sleeve 51. The top of the upper disc 65 and the bottom of the structure ring 62 are fixedly connected by a spring 67. The slide rod 63, the sleeve rod 64, the spring 67 and the outer cylinder 69 are all made of insulating materials. The outer cylinder 69 is fixedly connected with a mounting side plate 610, which is screwed to the inner wall of the photovoltaic electrical control cabinet 1.

[0045] Through the above manner, the heat transfer protrusions 53 of the outer wall of the metal sleeve 51 can increase the contact area with the air in the cabinet, and accelerate the response speed of the silicone oil to the temperature; the sealing piston can prevent the silicone oil from leaking from the gap between the metal sleeve 51 and the metal push rod 52, and ensure the stability of the silicone oil inside the metal sleeve 51; the spring 67 can assist the upper disc 65 to reset when the temperature decreases, and ensure that the heat dissipation circuit is disconnected in time; the insulation materials of the slide rod 63, the sleeve rod 64, the spring 67 and the outer cylinder 69 can avoid the risk of electric leakage or short circuit when the circuit is turned on; the installation side plate 610 is fixed by screwing, which is convenient for the installation, maintenance and replacement of the heat dissipation control assembly 6.

[0046] Specifically, the upper disc 65 is fixedly sleeved with a sealing ring 66 on the outer side, the sealing ring 66 is slidably connected with the outer cylinder 69, the upper end of the slide rod 63 is fixedly installed with a pull cap 615, a plurality of electrode protrusions 68 are uniformly arranged on the bottom of the upper disc 65, the upper plug 612 is inserted into the upper socket 19, the lower plug 613 is inserted into the lower socket 18, the limiting screw rod 614 is screw-installed on the side edge of the structure ring 62, and the inner side end of the limiting screw rod 614 abuts against the outer wall of the slide rod 63.

[0047] Through the above manner, the sealing ring 66 on the outer side of the upper disc 65 can prevent external dust and moisture from entering the inside of the outer cylinder 69, and ensure the reliability of the conductive contact between the upper disc 65 and the lower disc 611; the slide rod 63 and the sleeve rod 64 jointly constitute a limiting telescopic cylinder component; the sinking interval of the upper disc 65 relative to the structure ring 62 is naturally expanded to the maximum extension length by the elastic abutting action of the spring 67, when the upper disc 65 abuts against the lower disc 611, the sleeve rod 64 is automatically stressed to shrink, the spring 67 is compressed to store force, the upper disc 65 is automatically pressed, the upper disc 65 can stably keep electrical connection with the lower disc 611, and then the connection of the entire energized heat dissipation circuit is ensured, the stable heat dissipation is ensured, and the limiting screw rod 614 arranged on the side edge can adjust the fixed clamping distance of the slide rod 63 in the structure ring 62, and then change the sinking interval of the entire upper disc 65, through adjusting this parameter, the upper disc 65 can be connected in advance with the lower disc 611 or lag behind the lower disc 611 to be connected, which is equivalent to a temperature-sensitive trigger parameter, through pulling the slide rod 63 and limiting, the active heat dissipation can be triggered only when the temperature is high, otherwise, the active heat dissipation can be triggered when the temperature is slightly high, this adjustable setting is convenient for adjusting according to the actual use scene, expands the application range, and enhances the practicality.

[0048] The electrode protrusions 68 on the bottom of the upper disc 65 can increase the conductive contact area with the lower disc 611, reduce the contact resistance, and avoid local overheating; the plug-in cooperation of the upper plug 612 and the upper socket 19 and the lower plug 613 and the lower socket 18 simplifies the circuit connection process.

[0049] Second embodiment:

[0050] Please refer to Figures 8-9 and Figure 12 In this embodiment, the first linkage expansion assembly 7 includes a structure plate 71 and a louver frame 73. The structure plate 71 is fixedly installed at the lower end of the metal push rod 52. A dovetail groove 76 is formed on the lower side of the structure plate 71. A dovetail block 77 is slidably connected to the inner side of the dovetail groove 76. A boom 72 is fixedly connected to the lower side of the dovetail block 77. A plurality of louver blades 74 are rotatably installed on the inner side of the louver frame 73. A notch 75 is symmetrically formed on the rear side of each louver blade 74. The boom 72 is hingedly connected to the plurality of notches 75.

[0051] Through the above arrangement, the structure plate 71 serves as a connecting carrier of the metal push rod 52 and the boom 72, and can transmit the linear motion of the metal push rod 52 to the boom 72. The sliding fit of the dovetail groove 76 and the dovetail block 77 can compensate for the lateral displacement of the boom 72 through the horizontal movement of the dovetail block 77 when the louver blades 74 rotate, avoiding motion interference. The hinged fit of the boom 72 and the notches 75 of the louver blades 74 can convert the vertical movement of the boom 72 into the rotation of the louver blades 74, realizing the synchronous opening and closing of the heat dissipation air outlet. The louver frame 73 provides an installation frame for the louver blades 74, ensuring the synchronous movement of multiple groups of louver blades 74.

[0052] Specifically, the louver frame 73 is screw-connectedly installed on the inner side of the mounting groove 16. The length of the dovetail groove 76 is greater than that of the dovetail block 77. A sealing corrugated plate 79 is fixedly connected between the side edge of the dovetail block 77 and the dovetail groove 76. A plurality of reinforcing connecting blocks 78 are fixedly connected between the dovetail block 77 and the boom 72.

[0053] It should be noted that when the heat-sensitive telescopic rod member composed of the two metal sleeves 51 and the metal push rod 52 synchronously drives the louver blades 74 and the arc-shaped bent turning plate 81, the louver blades 74 and the arc-shaped bent turning plate 81 are both rotatably connected to the lower side of the heat-sensitive telescopic rod member symmetrically designed on both sides. Then, the structure linkage effect of the louver blades 74 and the arc-shaped bent turning plate 81 restricts the reaction, so that the heat-sensitive telescopic rod member forms a synchronous driving movement form, avoiding the disadvantage that the slight difference in volume of the silicon oil filled in the metal sleeve 51 after thermal expansion causes inconsistent driving or contraction distance of the heat-sensitive telescopic rod member. The silicon oil adopts methylphenyl silicone oil, which introduces a phenyl side group into the molecular backbone, significantly improving the heat resistance and oxidation resistance, and can remain liquid within the range of -50℃ to 250℃, avoiding failure caused by low-temperature crystallization or high-temperature decomposition. It has no corrosion or swelling risk to metal pistons, sealing rings, etc., and is suitable for long-term work in airtight environment.

[0054] Through the above manner, the louver frame 73 and the screw connection of the mounting groove 16 facilitate the assembly disassembly and maintenance; the design that the length of the dovetail groove 76 is greater than the dovetail block 77 provides sufficient sliding space for the dovetail block 77, meets the maximum opening angle requirement of the louver blade 74; the sealing corrugated plate 79 can seal the gap between the dovetail groove 76 and the dovetail block 77 to prevent dust from entering; the reinforced connecting block 78 can enhance the connection strength between the dovetail block 77 and the boom 72, avoid structure fracture after long-term use, and improve the service life of the assembly.

[0055] It should be noted that after the louver frame 73 and the louver blade 74 are installed, a layer of dustproof net can be added outside the louver frame 73 to improve the overall dustproof and anti-mosquito performance of the photovoltaic electrical control cabinet 1.

[0056] Third embodiment:

[0057] Please refer to Figures 10-11 In the embodiment, the second linkage expansion assembly 8 includes an arc surface bending turning plate 81, a water shedding plate 85 is fixedly connected between the outer side ends of the two arc surface bending turning plates 81, a long circular groove 83 is laterally formed at the inner side end of the arc surface bending turning plate 81, and a fixed pin 84 is rotatably inserted into the long circular groove 83 and fixedly inserted into the side wall of the metal push rod 52.

[0058] Through the above manner, the arc surface bending turning plate 81 converts the vertical movement of the metal push rod 52 into its own rotation through the cooperation of the long circular groove 83 and the fixed pin 84, and then drives the water shedding plate 85 to lift up / down; as the core waterproof component, the water shedding plate 85 can compensate for the waterproof short board by expanding the shielding area when the louver blade 74 is expanded and the waterproof performance is reduced; the fixed connection of the fixed pin 84 and the metal push rod 52 ensures that the movement of the metal push rod 52 can be accurately transmitted to the arc surface bending turning plate 81, realizing the synchronous linkage with the first linkage expansion assembly 7.

[0059] Specifically, the arc surface bending turning plate 81 is rotatably installed inside the turning groove 17, the water shedding plate 85 is made of ASA engineering plastic material, the arc surface bending turning plate 81 and the inner wall of the turning groove 17 are fixedly connected with a rubber sealing plate 82, and the water shedding plate 85 is downwardly bent.

[0060] Through the above manner, the arc surface bending turning plate 81 and the turning groove 17 are rotatably connected, ensuring the structural stability during the expansion / storage of the assembly; the ASA engineering plastic material used for the water shedding plate 85 has excellent weather resistance, ultraviolet resistance and impact resistance, and is suitable for complex outdoor environments of photovoltaic power stations; the rubber sealing plate 82 can seal the gap between the arc surface bending turning plate 81 and the turning groove 17, preventing rainwater and dust from penetrating into the cabinet; the downward bending design of the water shedding plate 85 can guide the rainwater to flow outward, further improving the waterproof effect.

[0061] The working principle of the photovoltaic power station electrical heat dissipation control equipment provided by the application is as follows:

[0062] When the electrical components in the photovoltaic electrical control cabinet 1 generate heat and the temperature rises, the heat transfer protrusions 53 on the outer wall of the metal sleeve 51 quickly transfer the heat to the internally filled heat-sensitive silicone oil, and the silicone oil expands after being heated to push the metal push rod 52 (cooperating with the sealing piston seal) to slide downward; the metal push rod 52 drives the structure ring 62 to move downward through the connecting branch 61, and then the slide rod 63, the sleeve rod 64 and the upper disc 65 synchronously move downward, until the electrode protrusions 68 at the bottom of the upper disc 65 abut against the lower disc 611 in the outer cylinder 69, at this time, the upper plug 612 (connected with the upper disc 65) and the lower plug 613 (connected with the lower disc 611) are connected to form a circuit, the heat dissipation fan 15 on the folding plate 14 is powered on and starts to blow cold air downward to directly blow the electrical components on the electrical mounting plate seat 13; when the temperature decreases, the silicone oil contracts, the metal push rod 52 retracts, the spring 67 assists the upper disc 65 to reset, the circuit is disconnected, and the heat dissipation fan 15 stops working, realizing the temperature linkage heat dissipation control of the non-electricity sensor.

[0063] In the process of moving the metal push rod 52 downward, the structure plate 71 fixed at the lower end of the metal push rod 52 synchronously moves downward, and the dovetail block 77 in the dovetail groove 76 on the lower side of the structure plate 71 drives the hanger rod 72 to descend; the hanger rod 72 is hinged to the rear notches 75 of the louvers 74, pulls a plurality of louvers 74 to rotate and expand around the louver frame 73, expands the heat dissipation air outlet on the left side of the photovoltaic electrical control cabinet 1, and cooperates with the heat dissipation fan 15 to form a high-efficiency air flow channel; the sliding of the dovetail block 77 in the dovetail groove 76 can compensate for the transverse displacement of the hanger rod 72 when the louvers 74 rotate, so as to avoid motion interference, and the sealing corrugated plate 79 seals the gap between the dovetail groove and the dovetail block to prevent dust from entering; when the metal push rod 52 retracts, the hanger rod 72 moves upward, the louvers 74 reset to an inclined downward state, and the waterproof performance of the cabinet body is restored.

[0064] When the metal push rod 52 moves downward, the fixed plug 84 fixed on the side wall of the metal push rod 52 slides in the long circular groove 83 on the inner side of the arc-bent turning plate 81, pushes the arc-bent turning plate 81 to rotate around the rotating groove 17, and makes the water-shedding plate 85 on the outer side of the arc-bent turning plate 81 lift and expand; with the decline of the waterproof performance caused by the expansion of the louvers 74, the water-shedding plate 85 expands after the expansion to expand the shielding area of the air outlet on the left side of the photovoltaic electrical control cabinet 1, and the downward bending structure can guide the rainwater to flow outward, and the rubber sealing plate 82 seals the gap between the arc-bent turning plate and the rotating groove 17 to prevent rainwater from seeping in; when the metal push rod 52 retracts, the fixed plug 84 (the sliding of the fixed plug 84 and the long circular groove 83 can avoid the motion interference when the arc-bent turning plate 81 rotates under the drive of the metal push rod 52) pulls the arc-bent turning plate 81 to reset, the water-shedding plate 85 is lowered, and the reset state of the louvers 74 is adapted to ensure the compact waterproof structure of the cabinet body in the non-strong heat dissipation state.

[0065] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields, which is made according to the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A photovoltaic power plant electrical heat dissipation control device, characterized in that, Photovoltaic electrical control cabinet (1), drive assembly (5), heat dissipation control assembly (6), first linkage expansion assembly (7) and second linkage expansion assembly (8) are included. The drive assembly (5) includes a metal sleeve (51), two metal sleeves (51) are symmetrically fixedly installed on the inner side top of the photovoltaic electrical control cabinet (1), the lower side of the metal sleeve (51) is slidably installed with a metal push rod (52), the inside of the metal sleeve (51) is filled with silicon oil, the heat dissipation control assembly (6) includes a connecting strut (61) and an outer cylinder (69), the side of the connecting strut (61) is fixedly connected with a structure ring (62), the center of the structure ring (62) is slidably inserted with a sliding rod (63), the lower end of the sliding rod (63) is slidably sleeved with a sleeve rod (64), the lower end of the sleeve rod (64) is fixedly installed with an upper disc (65), the inner bottom of the outer cylinder (69) is fixedly installed with a lower disc (611), the upper disc (65) is slidably arranged on the inner side of the outer cylinder (69), the upper side of the upper disc (65) is electrically connected with an upper plug (612), the lower side of the lower disc (611) is electrically connected with a lower plug (613), the second linkage expansion assembly (8) includes an arc surface bending turn plate (81), two arc surface bending turn plates (81) are fixedly connected with a water shedding plate (85) between the outer side ends, the inner side end of the arc surface bending turn plate (81) is laterally provided with an oblong groove (83), the inner side of the oblong groove (83) is rotatably inserted with a fixed bolt (84), the fixed bolt (84) is fixedly inserted on the side wall of the metal push rod (52), the outer wall of the metal sleeve (51) is densely provided with a plurality of heat transfer protrusions (53), the upper side end of the metal push rod (52) is fixedly installed with a sealing piston, the sealing piston is slidably connected with the inner wall of the metal sleeve (51), the spring (67) is fixedly connected between the top of the upper disc (65) and the bottom of the structure ring (62), the sliding rod (63), the sleeve rod (64), the spring (67) and the outer cylinder (69) are all made of insulating material, the side of the outer cylinder (69) is fixedly connected with a mounting side plate (610), and the mounting side plate (610) is screw-connected and mounted on the inner wall of the photovoltaic electrical control cabinet (1).

2. The electrical heat dissipation control device for a photovoltaic power station according to claim 1, characterized in that, The first linkage expansion assembly (7) includes a structure plate (71) and a louver frame (73), the structure plate (71) is fixedly installed on the lower end of the metal push rod (52), the lower side of the structure plate (71) is provided with a dovetail groove (76), the inner side of the dovetail groove (76) is slidably connected with a dovetail block (77), the lower side of the dovetail block (77) is fixedly connected with a hanging rod (72), the inner side of the louver frame (73) is rotatably installed with a plurality of louver blades (74), the rear side of the louver blade (74) is symmetrically provided with a notch (75), and the hanging rod (72) is hingedly connected with a plurality of notches (75) synchronously.

3. The electrical heat dissipation control device for a photovoltaic power station according to claim 1, characterized in that, The photovoltaic electrical control cabinet (1) is rotatably installed with a cabinet door (3) at the front side port, the cabinet door (3) is fixedly installed with a lock handle (4), the photovoltaic electrical control cabinet (1) is fixedly installed with a gasket (2) at the bottom, the photovoltaic electrical control cabinet (1) is provided with a dustproof and heat dissipation vent (9) at the right side, the dustproof and heat dissipation vent (9) is fixedly installed with a rain cover (10) at the upper side, four insulating columns (12) are fixedly installed at the inner bottom of the photovoltaic electrical control cabinet (1), the insulating columns (12) are fixedly installed with electrical mounting plate seats (13) at the top, and a plurality of heat dissipation holes are uniformly and evenly formed in the electrical mounting plate seats (13).

4. The electrical heat dissipation control device for a photovoltaic power station according to claim 1, characterized in that, A plurality of groups of folding plates (14) are fixedly installed at the inner right upper side of the photovoltaic electrical control cabinet (1), the folding plates (14) are fixedly installed with heat dissipation fans (15), the heat dissipation fans (15) are provided with inclined downward air outlets, an electricity connection socket (11) is fixedly installed on the side wall of the photovoltaic electrical control cabinet (1), a lower socket (18) and an upper socket (19) are fixedly installed on the inner wall of the photovoltaic electrical control cabinet (1), and the electricity connection socket (11), the lower socket (18) and the upper socket (19) are electrically connected in a circuit breaker circuit.

5. The electrical heat dissipation control device for a photovoltaic power station according to claim 1, characterized in that, The left side wall of the photovoltaic electrical control cabinet (1) is provided with a mounting groove (16) and a rotating groove (17).

6. The electrical heat dissipation control device for a photovoltaic power station according to claim 1, characterized in that, The outer side of the upper disc (65) is fixedly sleeved with a sealing ring (66), the sealing ring (66) is in sliding connection with an outer cylinder (69), a pull cap (615) is fixedly installed at the upper end of the sliding rod (63), a plurality of electrode protrusions (68) are uniformly and evenly arranged at the bottom of the upper disc (65), the upper plug (612) is inserted into the upper socket (19), the lower plug (613) is inserted into the lower socket (18), a limiting screw rod (614) is screw-connected and installed at the side edge of the structure ring (62), and the inner side end of the limiting screw rod (614) is in abutment with the outer wall of the sliding rod (63).

7. The electrical heat dissipation control device for a photovoltaic power station according to claim 2, characterized in that, The louver frame (73) is screw-connected and installed at the inner side of the mounting groove (16), the length of the dovetail groove (76) is greater than that of the dovetail block (77), the sealing corrugated plate (79) is fixedly connected between the side edge of the dovetail block (77) and the dovetail groove (76), and the dovetail block (77) and the suspender (72) are fixedly connected with a plurality of reinforcing connecting blocks (78).

8. The electrical heat dissipation control device for a photovoltaic power station according to claim 1, characterized in that, The arc surface bending rotating plate (81) is rotatably installed at the inner side of the rotating groove (17), the water shedding plate (85) is made of ASA engineering plastic material, the arc surface bending rotating plate (81) and the inner wall of the rotating groove (17) are fixedly connected with a rubber sealing plate (82), and the water shedding plate (85) is provided in a downward bending mode.

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