Photovoltaic power generation high-voltage cabinet with protection structure

Abstract

The invention relates to the technical field of photovoltaic power generation high-voltage cabinets, in particular to a photovoltaic power generation high-voltage cabinet with a protection structure, the photovoltaic power generation high-voltage cabinet comprises a cabinet body, the inner wall of the cabinet body is fixedly connected with a fire sensor and a temperature and humidity sensor, and the temperature and humidity sensor is located below the fire sensor; the device comprises a cabinet body, a spray head adjusting assembly is arranged on the upper portion of the interior of the cabinet body, a spray head is installed at the bottom of the spray head adjusting assembly, the water inlet end of the spray head is connected with a spray pipe, the end, away from the spray head, of the spray pipe is fixedly connected with a liquid storage tank, and a top protection plate is fixed to the upper portion of the cabinet body. And the liquid storage tank is fixedly installed at the top of the top protection plate, the position of the spray head can be adjusted through the arranged spray head adjusting assembly, when the spray head needs to spray liquid carbon dioxide to achieve the fire extinguishing function, the spray head can move along with movement of the sliding piece, and the spraying range of the spray head is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation high-voltage cabinets, and particularly relates to a photovoltaic power generation high-voltage cabinet with a protection structure. Background Art

[0002] A photovoltaic power generation high-voltage cabinet, also known as a high-voltage switch cabinet for a photovoltaic power station or a photovoltaic grid-connected cabinet, is one of the core devices of a photovoltaic power station. Its main function is to transmit the electric energy generated by a photovoltaic power generation system to the power grid for grid connection to achieve power contribution and obtain electricity bill income. At the same time, it can also manage the power grid, output the electric energy of the power generation system as much as possible, and monitor parameters such as the voltage, current, and power of the power grid to ensure reliable operation.

[0003] Since there are a large number of electrical components and cables inside a photovoltaic power generation high-voltage cabinet, if faults such as short circuits and overloads occur, it is very easy to cause a fire; after being sprayed by a sprinkler head into the cabinet, the fire extinguishing work of the photovoltaic power generation substation box is realized. The sprinkler head is fixed inside the box, and the spraying range is limited. If the ignition point is located at the corner, it is easy to be not covered, reducing the fire extinguishing effect. Summary of the Invention

[0004] In view of the above problems that there are a large number of electrical components and cables inside the existing photovoltaic power generation high-voltage cabinet, if faults such as short circuits and overloads occur, it is very easy to cause a fire; after being sprayed by a sprinkler head into the cabinet, the fire extinguishing work of the photovoltaic power generation substation box is realized. The sprinkler head is fixed inside the box, and the spraying range is limited. If the ignition point is located at the corner, it is easy to be not covered, reducing the fire extinguishing effect, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a photovoltaic power generation high-voltage cabinet with a protection structure.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A photovoltaic power generation high-voltage cabinet with a protection structure, including,

[0007] a cabinet body, wherein a fire sensor and a temperature and humidity sensor are arranged on the inner wall of the cabinet body, and the temperature and humidity sensor is located below the fire sensor;

[0008] a sprinkler head adjustment assembly, arranged in the inner cavity of the cabinet body. A sprinkler head is installed at the bottom of the sprinkler head adjustment assembly. The water inlet end of the sprinkler head is connected with a spraying pipe. A top protection plate is fixed above the cabinet body, and a liquid storage tank is fixedly installed on the top of the top protection plate. The end of the spraying pipe far away from the sprinkler head is fixedly connected with the liquid storage tank; and,

[0009] the sprinkler head adjustment assembly includes a driving member and a follower member. The driving member is arranged on the cabinet body, and the follower member is arranged on the driving member. The sprinkler head is adjusted to move through the sprinkler head adjustment assembly.

[0010] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: a base is provided at the bottom of the cabinet body, and a microprocessor is further provided inside the cabinet body. The microprocessor is fixedly connected to the inner wall of the cabinet body near the lower side.

[0011] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: the driving member includes a sliding plate slidably installed inside the cabinet body. A guiding rack is provided at the rear end of the sliding plate, and a transmission gear installed inside the sliding plate is connected to one side of the guiding rack. A connecting shaft is fixedly inserted through the inside of the transmission gear, and a driving bevel gear is fixedly connected to one end of the connecting shaft.

[0012] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: the follower member includes a driven bevel gear provided on one side of the driving bevel gear. A second adjusting lead screw is fixedly installed in the middle of the front end of the driven bevel gear. A first lead screw nut is installed at the connection between the second adjusting lead screw and the sliding block, and the sliding block is connected to the outside of the second adjusting lead screw through the first lead screw nut.

[0013] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: the adjusting servo motor is fixedly installed on the outer wall of the cabinet body through an external bolt, and a first adjusting lead screw is connected to the power output end of the adjusting servo motor.

[0014] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: a second lead screw nut is installed at the connection between the sliding plate and the first adjusting lead screw, and the first adjusting lead screw is installed in the middle of the inside of the sliding plate through the second lead screw nut.

[0015] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: a connecting slider is provided at the connection between the sliding plate and the cabinet body. The connecting slider is fixed at the end of the sliding plate, and the sliding plate realizes left-right sliding with the cabinet body through the connecting slider.

[0016] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: a channel penetrating through the sliding plate is provided at the connection between the nozzle and the sliding plate to guide and limit the movement of the nozzle. The nozzle is interconnected with the liquid storage tank through a spraying pipe, and an electric valve is fixedly connected to the middle of the spraying pipe through a flange.

[0017] As a preferred embodiment of the high-voltage cabinet for photovoltaic power generation with a protection structure according to the present invention, the following is provided: a heat dissipation net is provided below the adjusting servo motor, and the heat dissipation net is fixed on the cabinet body.

[0018] As a preferred embodiment of a photovoltaic power generation high-voltage cabinet with a protection structure according to the present invention, wherein: the microprocessor is electrically connected to the adjustment servo motor and the fire sensor, and the temperature and humidity sensor is electrically connected to the microprocessor.

[0019] The beneficial effects of the present invention: The nozzle adjustment assembly can adjust the position of the nozzle. When it is necessary to spray liquid carbon dioxide through the nozzle to achieve the fire extinguishing function, the nozzle can move with the movement of the sliding block, increasing the spraying range of the nozzle.

[0020] The transmission gear can rotate under the action of the guiding rack, and then drive the driven bevel gear to rotate through the driving bevel gear, so as to realize the forward and backward movement of the nozzle. The nozzle can move left and right simultaneously under the action of the first adjustment screw rod, thereby increasing the spraying range of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of a photovoltaic power generation high-voltage cabinet with a protection structure according to the present invention.

[0023] Figure 2 It is a schematic diagram of a partial internal structure of a photovoltaic power generation high-voltage cabinet with a protection structure according to the present invention.

[0024] Figure 3 It is an attached Figure 2 magnified schematic diagram of structure A in the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the nozzle adjustment assembly of a photovoltaic power generation high-voltage cabinet with a protection structure according to the present invention.

[0026] Description of the Drawings: 1. Cabinet body; 2. Top protection plate; 3. Base; 4. Heat dissipation net; 5. Sprinkler adjustment assembly; 51. Driving member; 511. Adjusting servo motor; 512. First adjusting lead screw; 513. Sliding plate; 514. Second lead screw nut; 515. Transmission gear; 516. Guide rack; 517. Connecting shaft; 518. Driving bevel gear; 52. Follow-up member; 521. Driven bevel gear; 522. Sliding block; 523. Second adjusting lead screw; 524. Connecting slider; 525. First lead screw nut; 8. Fire sensor; 9. Temperature and humidity sensor; 10. Microprocessor; 6. Sprinkler; 7. Spraying pipe; 11. Liquid storage tank; 12. Electric valve. Detailed Description of the Invention

[0027] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following provides a detailed description of the specific embodiments of the present invention with reference to the drawings in the specification.

[0028] In the following description, many specific details are set forth to facilitate a thorough understanding of the present invention. However, the present invention may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0029] Secondly, the so-called "one embodiment" or "embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively exclusive embodiments from other embodiments.

[0030] Furthermore, the present invention is described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for ease of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0031] Refer to the attached Figures 1-4, this embodiment provides a high-voltage cabinet for photovoltaic power generation with a protection structure, including a cabinet body 1. A fire sensor 8 and a temperature and humidity sensor 9 are installed on the inner wall of the cabinet body 1 by screws, and the temperature and humidity sensor 9 is located below the fire sensor 8. A nozzle adjustment assembly 5 is arranged in the inner cavity of the cabinet body 1, and a nozzle 6 is installed at the bottom of the nozzle adjustment assembly 5. The water inlet end of the nozzle 6 is connected to a spray pipe 7, and one end of the spray pipe 7 away from the nozzle 6 is fixedly connected to a liquid storage tank 11. A top protection plate 2 is fixed above the cabinet body 1, and the liquid storage tank 11 is fixedly installed on the top of the top protection plate 2. The nozzle adjustment assembly 5 includes a driving member 51 and a follower member 52. The driving member 51 is arranged on the cabinet body 1, and the follower member 52 is arranged on the driving member 51. The nozzle 6 is adjusted to move through the nozzle adjustment assembly 5;

[0032] Among them, the driving member 51 includes a sliding plate 513 slidably installed inside the cabinet body 1. A guiding rack 516 is arranged at the rear end of the sliding plate 513, and a transmission gear 515 installed inside the sliding plate 513 is connected to one side of the guiding rack 516. A connecting shaft 517 is fixedly penetrated inside the transmission gear 515, and a driving bevel gear 518 is fixedly connected to one end of the connecting shaft 517;

[0033] Among them, the follower member 52 includes a driven bevel gear 521 arranged on one side of the driving bevel gear 518. A second adjusting screw rod 523 is fixedly installed in the middle of the front end of the driven bevel gear 521. A first screw nut 525 is installed at the connection between the second adjusting screw rod 523 and the sliding block 522. The sliding block 522 is threadedly connected to the outside of the second adjusting screw rod 523 through the first screw nut 525. A second screw nut 514 is installed at the connection between the sliding plate 513 and the first adjusting screw rod 512. The first adjusting screw rod 512 is installed in the middle of the inside of the sliding plate 513 through the second screw nut 514. One end of the first adjusting screw rod 512 is connected to the power output end of an adjusting servo motor 511, and the adjusting servo motor 511 is fixedly installed on the outer wall of the cabinet body 1 through an external bolt;

[0034] Among them, the adjusting servo motor 511 is fixedly installed on the outer wall of the cabinet body 1 through an external bolt. The power output end of the adjusting servo motor 511 is connected to a first adjusting screw rod 512; a second screw nut 514 is installed at the connection between the sliding plate 513 and the first adjusting screw rod 512, and the first adjusting screw rod 512 is installed in the middle of the inside of the sliding plate 513 through the second screw nut 514; a connecting slider 524 is arranged at the connection between the sliding plate 513 and the cabinet body 1, and the sliding plate 513 realizes left-right sliding with the cabinet body 1 through the connecting slider 524. A channel penetrating through the sliding plate 513 is arranged at the connection between the nozzle 6 and the sliding plate 513.

[0035] By adopting the above technical solution, when the adjustment servo motor 511 starts, the adjustment servo motor 511 drives the first adjustment lead screw 512 to rotate through the power output end. Under the action of the second lead screw nut 514 on the first adjustment lead screw 512, the sliding plate 513 can be driven to move left and right. Since the transmission gear 515 at the rear end of the sliding plate 513 meshes with the guide rack 516, the transmission gear 515 can be driven to rotate by the guide rack 516 while the sliding plate 513 moves. When the transmission gear 515 rotates, it synchronously drives the driving bevel gear 518 to rotate through the connecting shaft 517. The driving bevel gear 518 can drive the second adjustment lead screw 523 to rotate through the driven bevel gear 521. When the second adjustment lead screw 523 rotates, the sliding block 522 is driven to move back and forth under the action of the first lead screw nut 525 on the second adjustment lead screw 523, so as to realize the position adjustment of the nozzle 6. At the same time, in order to further improve the coverage area of the nozzle 6, a second group of transmission gears 515 can be added on one side of the transmission gear 515. The second group of transmission gears 515 is separated from and does not mesh with the guide rack 516. Similarly, a second adjustment lead screw 523 is arranged below the second group of transmission gears 515. Since the two groups of transmission gears 515 rotate in opposite directions, the two groups of second adjustment lead screws 523 can be driven to rotate in opposite directions. The nozzles 6 installed on the two groups of second adjustment lead screws 523 also move in opposite directions. That is, when one group of nozzles 6 moves backward, the other group of nozzles 6 moves forward.

[0036] Specifically, as Figure 2 and Figure 4 shown, the nozzle 6 is interconnected with the liquid storage tank 11 through a pipeline and a spray pipe 7. The middle part of the spray pipe 7 is fixedly connected with an electric valve 12 through a flange. A heat dissipation net 4 is arranged below the adjustment servo motor 511, and the heat dissipation net 4 is fixed on the cabinet body 1. A base 3 is arranged at the bottom of the cabinet body 1. The bottom of the cabinet body is fixedly connected with the base, and a microprocessor 10 is also arranged inside the cabinet body 1. The microprocessor 10 is electrically connected with the adjustment servo motor 511 and the fire sensor 8, and the temperature and humidity sensor 9 is electrically connected with the microprocessor 10. The microprocessor 10, as the core component of the device, undertakes the functions of data processing, instruction execution, control and coordination, storage management, input and output processing, interrupt processing, and program flow control.

[0037] By adopting the above technical solution, the microprocessor 10 is connected to the fire sensor 8, the temperature and humidity sensor 9, the regulating servo motor 511, and the electric valve 12 through interfaces. After the microprocessor 10 is connected to the fire sensor 8 and the temperature and humidity sensor 9, it can receive the data collected by the fire sensor 8 and the temperature and humidity sensor 9. After the microprocessor 10 is connected to the regulating servo motor 511 and the electric valve 12, it can send instructions to the regulating servo motor 511 and the electric valve 12 to control the operation of the regulating servo motor 511 and the electric valve 12. The fire sensor 8 and the temperature and humidity sensor 9 are used to collect the fire data and the temperature and humidity data in the cabinet 1 respectively. The microprocessor 10, the fire sensor 8, and the temperature and humidity sensor 9 all adopt the devices in the existing publicly available technical solutions, which will not be elaborated here. Since the fire sensor 8 monitors the fire situation in the cabinet 1 in real time, when a fire occurs, the regulating servo motor 511 and the electric valve 12 can be automatically controlled by the microprocessor 10. The liquid carbon dioxide in the liquid storage tank 11 is sprayed downward through the spray pipe 7 and the nozzle 6 to achieve the fire extinguishing operation. When the sliding plate 513 moves, it is limited by the connecting slider 524 to move left and right. Since the pipe connecting the nozzle 6 and the sliding plate 513 is arranged to penetrate through the sliding plate 513, the nozzle 6 can only move back and forth along the bottom end of the sliding plate 513, thus realizing the guiding and limiting work of the nozzle 6. It should be particularly noted that the pipe between the spray pipe 7 and the nozzle 6 is selected as a telescopic corrugated pipe, which can ensure that the liquid carbon dioxide can be normally ejected from the nozzle 6 when the nozzle 6 moves.

[0038] Working principle: The fire sensor 8 monitors the fire situation in the cabinet 1 in real time. When a fire occurs, the regulating servo motor 511 and the electric valve 12 can be automatically controlled by the microprocessor 10. The liquid carbon dioxide in the liquid storage tank 11 is sprayed downward through the spray pipe 7 and the nozzle 6. After the regulating servo motor 511 is started, the regulating servo motor 511 drives the first adjusting screw rod 512 to rotate through the power output end, thereby driving the sliding plate 513 to move left and right. Since the transmission gear 515 at the rear end of the sliding plate 513 meshes with the guiding rack 516, the transmission gear 515 can be driven to rotate by the guiding rack 516 while the sliding plate 513 moves. When the transmission gear 515 rotates, it synchronously drives the driving bevel gear 518 to rotate through the connecting shaft 517. The driving bevel gear 518 can drive the second adjusting screw rod 523 to rotate through the driven bevel gear 521. When the second adjusting screw rod 523 rotates, it drives the sliding block 522 to move back and forth, thus realizing the position adjustment of the nozzle 6.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A high-voltage cabinet for photovoltaic power generation with a protection structure, characterized in that: including, a cabinet body (1), on the inner wall of the cabinet body (1), there are a fire sensor (8) and a temperature and humidity sensor (9), and the temperature and humidity sensor (9) is located below the fire sensor (8); a nozzle adjusting assembly (5), arranged in the inner cavity of the cabinet body (1), at the bottom of the nozzle adjusting assembly (5), there is a nozzle (6) installed, the water inlet end of the nozzle (6) is connected with a spraying pipe (7), above the cabinet body (1), there is a top protection plate (2) fixed, a liquid storage tank (11) is fixedly installed on the top of the top protection plate (2), and one end of the spraying pipe (7) far away from the nozzle (6) is fixedly connected with the liquid storage tank (11); and, the nozzle adjusting assembly (5) includes a driving part (51) and a follower part (52), the driving part (51) is arranged on the cabinet body (1), the follower part (52) is arranged on the driving part (51), and the nozzle (6) is adjusted to move by the nozzle adjusting assembly (5).

2. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 1, wherein: at the bottom of the cabinet body (1), there is a base (3) arranged, inside the cabinet body (1), there is also a microprocessor (10) arranged, and the microprocessor (10) is fixedly connected to the inner wall of the cabinet body (1) near the lower side.

3. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 2, wherein: the driving part (51) includes a sliding plate (513) slidably installed inside the cabinet body (1), at the rear end of the sliding plate (513), there is a guiding rack (516) arranged, and on one side of the guiding rack (516), there is a transmission gear (515) installed inside the sliding plate (513), inside the transmission gear (515), there is an engagement shaft (517) fixedly penetrated, and one end of the engagement shaft (517) is fixedly connected with a driving bevel gear (518).

4. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 3, characterized in that: the follower part (52) includes on one side of the driving bevel gear (518), there is a driven bevel gear (521) arranged, and in the middle of the front end of the driven bevel gear (521), there is a second adjusting screw rod (523) fixedly installed, at the connection part between the second adjusting screw rod (523) and the sliding block (522), there is a first screw nut (525) installed, and the outside of the second adjusting screw rod (523) is connected with a sliding block (522) through the first screw nut (525).

5. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 3 or 4, characterized in that: the adjusting servo motor (511) is fixedly installed on the outer wall of the cabinet body (1) through an external bolt, and the power output end of the adjusting servo motor (511) is connected with a first adjusting screw rod (512).

6. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 5, characterized in that: at the connection part between the sliding plate (513) and the first adjusting screw rod (512), there is a second screw nut (514) installed, and in the middle of the inside of the sliding plate (513), there is a first adjusting screw rod (512) installed through the second screw nut (514).

7. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 6, characterized in that: at the connection part between the sliding plate (513) and the cabinet body (1), there is an engagement sliding block (524) arranged, the engagement sliding block (524) is fixed at the end of the sliding plate (513), and the sliding plate (513) realizes left - right sliding with the cabinet body (1) through the engagement sliding block (524).

8. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 6 or 7, characterized in that: A channel penetrating through the sliding plate (513) is provided at the connection between the spray head (6) and the sliding plate (513) to guide and limit the movement of the spray head (6). The spray head (6) is interconnected with the liquid storage tank (11) through a spray pipe (7), and an electric valve (12) is provided in the middle of the spray pipe (7).

9. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 8, characterized in that: A heat dissipation net (4) is provided below the adjustment servo motor (511), and the heat dissipation net (4) is fixed to the cabinet body (1).

10. The high-voltage cabinet for photovoltaic power generation with a protection structure according to claim 9, characterized in that: The microprocessor (10) is electrically connected to the adjustment servo motor (511) and the fire sensor (8), and the temperature and humidity sensor (9) is electrically connected to the microprocessor (10).

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