grid-connected box

Abstract

The application relates to a grid-connected box. The grid-connected box comprises a cabinet assembly, electrical elements, a fire sensor and a controller; wherein the electrical elements and the fire sensor are arranged in the cabinet assembly, and the fire sensor is arranged close to the electrical elements; one side of the cabinet assembly towards the electrical elements is provided with a fire extinguishing medium release port, and a medium transmission path is arranged in the cabinet assembly and is communicated with the fire extinguishing medium release port, and an electromagnetic valve for controlling the opening and closing of the path is arranged on the medium transmission path; the controller is connected with the fire sensor and the electromagnetic valve in the cabinet assembly, and the controller is used for controlling the working state of the electromagnetic valve according to the sensing signal of the fire sensor.

Description

Technical Field

[0001] This application relates to the field of control technology, and in particular to a grid-connected box. Background Technology

[0002] A grid-connected box is a key piece of equipment connecting power generation equipment (such as solar panels and wind turbines) to the power grid, serving as a crucial interface for transmitting electrical energy from the generation point to the grid. Taking a photovoltaic grid-connected box as an example, solar panels generate direct current (DC), which is converted to alternating current (AC) by an inverter before being input into the grid-connected box. The grid-connected box processes and monitors the AC output from the inverter, ensuring the safe and stable integration of electrical energy into the grid while meeting grid connection requirements. Therefore, grid-connected boxes contain numerous electrical components, posing a certain fire risk. Current fire suppression systems for grid-connected boxes often occupy significant internal or external space, resulting in a large overall size for both the grid-connected box and the fire suppression system. Utility Model Content

[0003] Therefore, it is necessary to provide a grid-connected box that has fire extinguishing function and is small in size.

[0004] This application provides a grid-connected box, including a cabinet assembly, electrical components, a fire sensor, and a controller; wherein,

[0005] Both the electrical components and the fire sensor are located in the cabinet assembly, with the fire sensor positioned close to the electrical components.

[0006] The cabinet assembly has a fire extinguishing medium release port on the side facing the electrical component, and the cabinet assembly has a medium transmission path connected to the fire extinguishing medium release port. The medium transmission path is equipped with a solenoid valve for controlling the opening and closing of the path.

[0007] The controller is connected to the fire sensor and the solenoid valve in the cabinet assembly, respectively. The controller is used to control the working state of the solenoid valve according to the sensing signal of the fire sensor.

[0008] In one embodiment, the cabinet assembly includes a cabinet and a mounting plate, the mounting plate being detachably connected to the cabinet;

[0009] The cabinet body encloses a cavity to form a receiving chamber, and the mounting plate is disposed in the receiving chamber formed by the cabinet body; or the cabinet body and the mounting plate together enclose a cavity to form a receiving chamber.

[0010] In one embodiment, the grid-connected box includes multiple fire sensors, and the mounting plate includes multiple solenoid valves. The mounting plate is configured with multiple fire extinguishing zones. Each fire extinguishing zone is provided with a corresponding fire sensor and a fire extinguishing medium release port. The medium transmission paths between the fire extinguishing medium release ports corresponding to the same fire extinguishing zone are connected, and the medium transmission paths between the fire extinguishing medium release ports of different fire extinguishing zones are isolated by the solenoid valves.

[0011] The controller is used to control the working state of the solenoid valve corresponding to the fire extinguishing zone according to the sensing signals of each of the fire sensors.

[0012] In one embodiment, the mounting plate includes:

[0013] A connecting plate is used for detachable connection with the cabinet body;

[0014] An isolation plate is connected to the inner wall of the connecting plate. The isolation plate is used to divide the interior of the connecting plate into a buffer chamber and multiple fire extinguishing chambers. The multiple fire extinguishing chambers are respectively arranged to correspond to multiple fire extinguishing zones. The isolation plate is provided with openings for communicating between the buffer chamber and each of the fire extinguishing chambers, so as to provide the fire extinguishing medium from the buffer chamber to each of the fire extinguishing chambers respectively.

[0015] The plurality of solenoid valves are respectively disposed at the plurality of openings in the isolation plate.

[0016] In one embodiment, the mounting plate is further provided with a fire extinguishing medium input port connected to the medium transmission path, and the grid-connected box further includes:

[0017] The extinguishing medium bottle is connected to the extinguishing medium inlet of the mounting plate and is used to provide the extinguishing medium.

[0018] In one embodiment, the extinguishing medium bottle is connected to the outer wall of the cabinet assembly.

[0019] In one embodiment, the fire extinguishing medium bottle is disposed in the accommodating cavity formed by the cabinet assembly, and the fire extinguishing medium bottle is connected to the inner wall of the cabinet or to the mounting plate.

[0020] In one embodiment, the extinguishing medium is contained in the buffer chamber.

[0021] In one embodiment, the connecting plate includes a top plate, a bottom plate, and a side plate connected between the top plate and the bottom plate. The opening of the fire extinguishing chamber is located on the top plate. The isolation plate is connected to the side plate and the top plate respectively, and the extending direction of the isolation plate is parallel to the top plate and the bottom plate.

[0022] In one embodiment, each of the fire extinguishing zones is provided with a plurality of fire extinguishing medium release ports arranged in an array.

[0023] In one embodiment, the mounting plate is a telescopic or splicing structure so that the size of the mounting plate matches the size of the cabinet.

[0024] The aforementioned grid-connected box cleverly utilizes "unused" space by incorporating fire extinguishing medium release ports facing the electrical components within its cabinet assembly. This avoids encroaching on space previously used for wiring or other functional modules, resulting in a more compact and rational overall structure that aligns with the trend towards miniaturized and integrated electrical equipment. This advantage is particularly pronounced in space-constrained scenarios such as distributed photovoltaic residential grid-connected boxes. Furthermore, placing fire sensors close to the electrical components enables timely fire detection. The controller then directs the solenoid valves along the medium delivery path to deliver the fire extinguishing medium to the release port, effectively improving the speed of fire suppression. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of the grid connection cabinet with the door closed, according to one embodiment.

[0027] Figure 2 This is one of the front views of a grid-connected box with its cabinet door open, according to an embodiment.

[0028] Figure 3 One of the left views of a grid-connected box according to an embodiment;

[0029] Figure 4 This is a schematic diagram of a mounting plate according to one embodiment;

[0030] Figure 5 for Figure 4 A cross-sectional view of the mounting plate at point AA in the embodiment;

[0031] Figure 6 This is a second front view of the grid connection box with the cabinet door open, according to one embodiment.

[0032] Figure 7 The second left view of a grid-connected box according to an embodiment;

[0033] Figure 8This is the third front view of a grid-connected box with its cabinet door open, according to one embodiment.

[0034] Component designation explanation:

[0035] Cabinet: 100; Mounting plate: 200; Connecting plate: 201; Top plate: 201a; Bottom plate: 201b; Side plate: 201c; Isolation plate: 202; Buffer chamber: 203; Fire extinguishing chamber: 204; Fire extinguishing zone: 205; Solenoid valve: 210; Fire extinguishing medium release port: 220; Fire extinguishing medium inlet: 230; Electrical components: 300; Fire sensor: 400; Fire extinguishing medium bottle: 500. Detailed Implementation

[0036] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0038] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0039] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0040] When used herein, the singular forms of “a,” “an,” and “ / the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0041] In related technologies, grid-connected boxes primarily use 304 stainless steel or cold-rolled steel plate with powder coating. When an electrical short circuit or overload occurs inside the grid-connected box, these materials cannot effectively isolate electrical fires, affecting the box's safety. Furthermore, installing fire extinguishing devices on the side walls or top of the box would occupy internal space, making the layout more cramped and potentially affecting the proper arrangement of other electrical components, or even interfering with normal wiring and maintenance access. Installing the fire extinguishing device inside the box would require specialized mounting brackets or fixing structures, increasing costs and potentially reducing the overall reliability and stability of the grid-connected box due to structural complexity.

[0042] This application provides a grid-connected box. Figure 1 This is a front view of a grid connection box according to an embodiment. Figure 2 This is one of the front views of the grid connection box with the cabinet door open, according to one embodiment. Figure 3 One of the left views of a grid-connected box according to an embodiment, in conjunction with reference. Figures 1 to 3 The grid-connected box includes a cabinet assembly, electrical components 300, a fire sensor 400, and a controller (not shown).

[0043] The cabinet assembly includes an openable and closable door for easy maintenance of the grid-connected box. Electrical components 300 and fire sensors 400 are both housed within the cavity enclosed by the cabinet assembly. The fire sensor 400 detects environmental information such as temperature and / or smoke and outputs corresponding sensing signals. In cases requiring the detection of multiple environmental parameters, the fire sensor 400 can be a composite fire sensor integrating multiple detection functions to improve its integration. The fire sensor 400 is positioned close to the electrical components 300. It is understood that in the early stages of a fire, heat and smoke take time to reach the fire sensor 400. If the fire sensor 400 is located far from the main heat-generating and flammable electrical components 300, a response delay will occur. For example, if a critical electrical component 300, such as a power device, malfunctions and catches fire, a poorly positioned fire sensor 400 may fail to detect the fire in time, thus missing the optimal time for firefighting.

[0044] The cabinet assembly has a fire extinguishing medium release port on the side facing the electrical component 300, and the cabinet assembly has a medium transmission path connected to the fire extinguishing medium release port. That is, the fire extinguishing medium can directly reach the fire area in the grid-connected box via the fire extinguishing medium release port through the medium transmission path. Compared to remote or wall-mounted fire extinguishing medium release devices in related technologies, the mounting plate 200 with the fire extinguishing medium release port in this embodiment can shorten the transmission path of the fire extinguishing medium and reduce response time. This allows the fire extinguishing medium to be quickly and accurately sprayed to the base of the fire source when the fire is in its early stages, effectively curbing the spread of the fire, protecting the critical electrical component 300, and reducing losses.

[0045] A solenoid valve is installed on the media transmission path to control the opening and closing of the path. A controller is connected to both the fire sensor 400 and the solenoid valve in the cabinet assembly. The controller controls the operating state of the solenoid valve based on the sensing signal from the fire sensor 400. The solenoid valve's operating state includes open and closed. When the solenoid valve is open, the media transmission path is open, and the extinguishing medium can reach the extinguishing medium release port. When the solenoid valve is closed, the media transmission path is closed, and the extinguishing medium cannot reach the extinguishing medium release port.

[0046] The controller, which may be, but is not limited to, a microprocessor chip, can analyze and compare the sensed signals with preset thresholds multiple times per second based on a built-in preset fire extinguishing algorithm to determine whether there is a fire hazard. For example, the preset thresholds could be a temperature greater than 70°C or a smoke PPM (Parts Per Million) concentration greater than 5000. Upon reaching the threshold, the controller can automatically open the solenoid valve to facilitate the transmission of the extinguishing medium. Furthermore, the controller can adjust the release pressure and flow rate of the extinguishing medium based on specific information such as temperature and smoke concentration to improve the accuracy of the extinguishing medium release.

[0047] In the embodiments described in the application, by setting a fire extinguishing medium release port facing the electrical components in the cabinet components of the grid-connected box, "unused" areas can be cleverly utilized without additionally encroaching on the space within the grid-connected box used for wiring and other functional modules. This makes the overall structure more compact and reasonable, conforming to the development trend of miniaturized and integrated electrical equipment. This advantage is particularly evident in space-constrained scenarios such as distributed photovoltaic household grid-connected boxes. Furthermore, placing the fire sensor 400 close to the electrical components 300 enables timely fire detection. The controller then controls the solenoid valve on the medium transmission path to deliver the fire extinguishing medium to the release port, effectively improving the response speed of fire suppression.

[0048] In one embodiment, the cabinet assembly includes a cabinet 100 and a mounting plate 200. The cabinet 100 includes a cabinet body and a cabinet door installed on the cabinet body, which, when closed, can together with the cabinet body to form an accommodating cavity. Figure 4This is a schematic diagram of a mounting plate 200 according to one embodiment, with reference to... Figure 4 The aforementioned extinguishing medium release port 220 is located on the mounting plate 200. The mounting plate 200 is located within the accommodating cavity formed by the cabinet body 100. The electrical components 300 and the fire sensor 400 are also located within the accommodating cavity formed by the cabinet body and the cabinet door. The mounting plate 200 can also be referred to as the bottom mounting plate 200, and it is detachably connected to the cabinet body 100. Specifically, the mounting plate 200 is detachably connected to the inner wall of the cabinet body 100, and the cabinet body 100 and the mounting plate 200 can be connected by, but are not limited to, bolts or screws.

[0049] In one embodiment, the cabinet assembly includes a cabinet 100 and a mounting plate 200. The cabinet 100 includes a cabinet body and a cabinet door mounted on the cabinet body. When the cabinet door is closed, the cabinet body, the cabinet door, and the mounting plate 200 together enclose a receiving cavity. (Continue to refer to...) Figure 4 The aforementioned extinguishing agent release port 220 is located on the mounting plate 200. Electrical components 300 and fire sensors 400 are also housed within the cavity formed by the cabinet body, cabinet doors, and mounting plate 200. The cabinet body can be integrally formed with the mounting plate 200, thereby improving the sealing of the cabinet components.

[0050] In one embodiment, the grid-connected box includes multiple fire sensors 400, and the mounting plate 200 includes multiple solenoid valves. (Continue to refer to...) Figure 4 The mounting plate 200 is configured with multiple fire suppression zones 205, each equipped with a corresponding fire sensor 400 and a fire extinguishing agent release port 220. That is, each fire suppression zone 205 corresponds to at least one fire sensor 400 and at least one fire extinguishing agent release port 220; for example, one fire suppression zone 205 may have two fire sensors 400 and 15 fire extinguishing agent release ports 220. When a fire suppression zone 205 has multiple fire extinguishing agent release ports 220, these ports can be arranged in an array or a ring to ensure effective coverage. It is understood that the data for the fire sensors 400 and the fire extinguishing agent release ports 220 can be specifically set according to the fire probability, the area of ​​the fire suppression zone 205, and the number and density of electrical components 300 in the fire suppression zone 205; no limitations are imposed here.

[0051] The media transmission paths between the extinguishing medium release ports 220 corresponding to the same fire extinguishing zone 205 are interconnected, while the media transmission paths between the extinguishing medium release ports 220 of different fire extinguishing zones 205 are isolated by solenoid valves. The controller is used to control the operating state of the solenoid valves of the corresponding fire extinguishing zone 205 based on the sensing signals from each fire sensor 400. Therefore, the controller can control only some solenoid valves to open, thereby extinguishing the corresponding fire extinguishing zone 205, reducing the waste of extinguishing medium and improving extinguishing efficiency. Furthermore, the controller can obtain the temperature distribution gradient and / or smoke concentration gradient within the grid-connected box based on the sensing signals output by the fire sensors 400, thereby accurately locating the fire area and extinguishing it.

[0052] Figure 5 for Figure 4 A cross-sectional view of the mounting plate 200 at point AA in the embodiment, see reference. Figure 5 In one embodiment, the mounting plate 200 includes a connecting plate 201 and an isolation plate 202. The connecting plate 201 is used to connect to the cabinet 100, and a fire extinguishing medium release port 220 is provided on the connecting plate 201. The isolation plate 202 is connected to the inner wall of the connecting plate 201, and the isolation plate 202 is used to divide the interior of the connecting plate 201 into a buffer chamber 203 and multiple fire extinguishing chambers 204.

[0053] Furthermore, the connecting plate 201 includes a top plate 201a, a bottom plate 201b, and a side plate 201c connecting the top plate 201a and the bottom plate 201b. The isolation plate 202 is connected to the side plate 201c and the top plate 201a, and the extending direction of the isolation plate 202 is parallel to the top plate 201a and the bottom plate 201b. Multiple fire extinguishing chambers 204 are respectively provided corresponding to multiple fire extinguishing zones 205. The isolation plate 202 is provided with openings for connecting the buffer chamber 203 and each fire extinguishing chamber 204, so as to provide the fire extinguishing medium from the buffer chamber 203 to each fire extinguishing chamber 204. Multiple solenoid valves 210 are respectively provided at multiple openings of the isolation plate 202. In the embodiment of the application, the extinguishing medium can fill the buffer chamber 203, and after the solenoid valve 210 connected to the extinguishing chamber 204 corresponding to the fire area is opened, it is sprayed out from the extinguishing medium release port 220 of the extinguishing chamber 204 corresponding to the fire area, thereby achieving targeted fire extinguishing.

[0054] In one embodiment, the mounting plate 200 is further provided with a fire extinguishing medium inlet connected to the medium transmission path, and the mesh enclosure also includes a fire extinguishing medium cylinder. The fire extinguishing medium cylinder is connected to the fire extinguishing medium inlet of the mounting plate 200 to provide the fire extinguishing medium. It is understood that many fire extinguishing media may be gaseous or volatile liquids at normal temperature and pressure. Compressing them within the fire extinguishing medium cylinder can keep the fire extinguishing media in a relatively stable state, reducing losses and performance degradation due to evaporation, leakage, etc. Moreover, the fire extinguishing medium cylinder can provide a powerful pressure source for the fire extinguishing medium. When fire extinguishing is required, the high pressure inside the cylinder can cause the fire extinguishing medium to be ejected at high speed and force, achieving a better fire extinguishing effect.

[0055] Figure 6 This is a second front view of the grid connection box with the cabinet door open, according to one embodiment. Figure 7 This is a second left view of a grid-connected box according to an embodiment, in conjunction with reference to... Figure 6 and Figure 7 In one embodiment, the fire extinguishing medium bottle 500 is connected to the outer wall of the cabinet assembly, specifically to the outer wall of the cabinet 100 within the cabinet assembly. By placing the fire extinguishing medium bottle 500 on the outside of the cabinet 100, the space occupied inside the electrical box can be further reduced.

[0056] Figure 8 This is the third front view of the grid connection box with the cabinet door open, according to one embodiment. Figure 8 In one embodiment, the extinguishing medium bottle 500 is disposed within a cavity enclosed by the cabinet assembly; for example, the extinguishing medium bottle 500 is connected to the inner wall of the cabinet 100 or to the mounting plate 200. Figure 8 As shown, the fire extinguishing medium cylinder 500 is connected to the inner wall of the cabinet 100. By placing the fire extinguishing medium cylinder 500 inside the electrical box, the impact of environmental factors such as wind and rain on the stability of the fire extinguishing medium cylinder 500 can be reduced, thus improving the stability of the fire extinguishing medium cylinder 500.

[0057] In one embodiment, the extinguishing medium is contained in a buffer chamber 203 to further reduce the overall size of the grid-connected box.

[0058] In one embodiment, the mounting plate 200 is a telescopic or splicing structure to match the dimensions of the cabinet 100. Specifically, the telescopic structure may include multiple sub-plates in the mounting plate 200, at least some of which include guide rails and sliding members that can be embedded in the guide rails. Taking two sub-plates as an example, by embedding the sliding member of one sub-plate into the guide rail of the other sub-plate, the sub-plate containing the sliding member can move along the extension direction of the guide rail, thereby changing the overall dimensions of the two sub-plates. The splicing structure may include multiple sub-plates in the mounting plate 200, which can be spliced ​​together by any of the following methods: screw connection, rivet connection, snap-fit ​​connection, etc. In the embodiments of the application, by setting the telescopic and splicing structures, not only can the grid-connected boxes with different lengths, widths, and heights be flexibly adapted, but the arrangement of the fire extinguishing medium release ports 220 can also be adjusted as needed to address the differences in the layout of electrical components 300 in different grid-connected boxes, thereby improving the flexibility of the mounting plate 200.

[0059] To ensure the correct and safe operation of the grid-connected box, the following steps need to be performed in sequence: component inspection and compatibility confirmation, selection and filling of extinguishing medium, placement of mounting plate 200, embedding of extinguishing medium release device, electrical and signal connection, and continuous monitoring of the extinguishing process.

[0060] The component inspection and compatibility verification includes: before installation, a detailed inspection of each component of the fire extinguishing medium release device is conducted to ensure that the fire extinguishing medium storage container is well-sealed, with no risk of leakage, and that the pressure indication is within the normal range (if it is a pressure storage type). The fire sensor 400 (integrated heat and smoke detection) is checked for proper function and calibrated to ensure its sensitivity meets design requirements. Simultaneously, based on the specific specifications of the grid connection box and the layout of the internal electrical components 300, a mounting plate 200 of suitable size and corresponding adjustment accessories are selected for the slots used to fix the electrical components 300 and the screw holes for connecting various parts of the fire extinguishing device.

[0061] The selection and filling of extinguishing media includes: choosing a suitable extinguishing media based on the type of electrical fire that may occur in the grid-connected box. An example extinguishing media is compressed carbon dioxide gas, which has advantages such as high extinguishing efficiency, good insulation, and no residue. Following the prescribed operating procedures, the selected extinguishing media is filled into the storage container, and parameters such as filling volume and pressure are recorded. The container's injection port is then sealed.

[0062] The installation of the mounting plate 200 involves: using flame-retardant, high-strength aluminum alloy, with a thickness designed according to load-bearing and fire-resistant requirements; placing the mounting plate 200 stably at a predetermined position at the bottom of the cabinet 100 of the grid connection box; and using bolts passed through pre-drilled fixing screw holes to tightly tighten it to the bottom frame of the cabinet 100, ensuring that the mounting plate 200 is level, stable, and free from shaking or displacement. During the tightening process, a torque wrench is used to control the torque, ensuring that the connection strength meets mechanical requirements while avoiding excessive force that could damage the mounting plate 200 or the grid connection box structure. The mounting plate 200 has multiple fire extinguishing chambers 204, which are independent of each other. The mounting plate 200 also includes a buffer chamber 203 located at the bottom of the fire extinguishing chambers 204 and connected to the extinguishing medium bottle 500. A channel is provided between the buffer chamber 203 and each fire extinguishing chamber 204, and a solenoid valve 210 is installed at the channel. Multiple extinguishing medium release ports 220 connecting to the outside are located at each fire extinguishing chamber 204. The fire extinguishing chamber 204 corresponds to the surface of the mounting plate 200, forming an independent fire extinguishing zone 205. Each fire extinguishing zone 205 is equipped with a composite fire sensor 400, which is located at the connection point between the electrical component 300 and the wire (a fire-prone area). When a fire breaks out at the connection point between the electrical component 300 and the wire, the fire sensor 400 in each independent zone detects a signal. When the detection threshold reaches a preset value, the control device sends a signal to the actuator (fire extinguishing tank, solenoid valve 210). The extinguishing medium passes through the buffer chamber 203 and then through the solenoid valve 210, and is sprayed from the extinguishing medium release port 220 of the corresponding zone to the point of ignition. This achieves zoned detection and zoned fire extinguishing, directly reaching the point of ignition, making fire extinguishing more effective and precise compared to existing technologies.

[0063] The steps for embedding the fire extinguishing medium release device include: carefully embedding the main body of the fire extinguishing medium release device (including the fire extinguishing medium cylinder 500, intelligent sprinkler head assembly, control solenoid valve 210, and fire sensor 400 module) into the preset groove or slot of the mounting plate 200, and further securing it with embedded bolts, clips, etc., so that the release device and the mounting plate 200 become one unit. For example, the bottom of the fire extinguishing medium cylinder 500 has a positioning protrusion that matches the groove of the mounting plate 200, and the left and right sides are locked with stainless steel clips to ensure that it remains stable and does not fall off under complex working conditions (such as vibration and impact). Connect the flexible fireproof and high-pressure resistant delivery pipeline between the fire extinguishing medium cylinder 500 and the intelligent sprinkler head. The pipeline is laid in an orderly manner along the wiring groove at the bottom of the mounting plate 200, avoiding sensitive parts such as the wiring terminals of electrical components 300, to ensure smooth delivery of the fire extinguishing medium.

[0064] The steps for electrical and signal connection include: connecting the electrical wiring of the fire sensor 400 and the control solenoid valve 210 to the pre-designed wiring channel inside the mounting plate 200, and connecting it to the controller with the built-in fire extinguishing control algorithm. The wiring connection uses soldering or connectors. Soldering ensures full solder joints without any cold solder joints, and connectors must be waterproof and resistant to loosening to ensure stable signal transmission. This enables real-time feedback of data from the fire sensor 400 to the controller, allowing the controller to precisely control the opening and closing of the solenoid valve 210, completing the entire electrical and sensor link construction and laying the foundation for the automatic fire extinguishing function.

[0065] The steps for continuous monitoring during the fire extinguishing process include: until the fire sensor 400 returns a fire extinguishing signal (temperature, smoke, and temperature returning to normal range), the controller closes the solenoid valve 210, and records the fire extinguishing data (including trigger time, extinguishing duration, and extinguishing medium usage) for subsequent operation and maintenance analysis. After the fire is extinguished, a reset procedure can be triggered manually or automatically to check the status of each component of the fire extinguishing device, such as whether the pipes are blocked, whether the nozzles are damaged, and whether the fire sensor 400 has been calibrated to zero, to prepare for the next operation. Extinguishing medium should be replenished regularly to ensure sufficient reserves.

[0066] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A grid-connected box, characterized in that, Includes cabinet components, electrical components, multiple fire sensors, and controllers; among which, Both the electrical components and the fire sensor are located in the cabinet assembly, with the fire sensor positioned close to the electrical components. The cabinet assembly has a fire extinguishing medium release port on the side facing the electrical component, and the cabinet assembly has a medium transmission path connected to the fire extinguishing medium release port. The cabinet assembly includes: Cabinet; The mounting plate is configured with multiple fire extinguishing zones, each fire extinguishing zone having a corresponding fire sensor and a fire extinguishing medium release port. The medium transmission paths between the fire extinguishing medium release ports corresponding to the same fire extinguishing zone are interconnected. The mounting plate includes a connecting plate, an isolation plate, and multiple solenoid valves. The connecting plate is detachably connected to the cabinet. The isolation plate is connected to the inner wall of the connecting plate and divides the interior of the connecting plate into a buffer chamber and multiple fire extinguishing chambers. The multiple fire extinguishing chambers are respectively arranged corresponding to multiple fire extinguishing zones. The isolation plate has openings for connecting the buffer chamber and each fire extinguishing chamber to supply the fire extinguishing medium from the buffer chamber to each fire extinguishing chamber. The multiple solenoid valves are respectively located at the multiple openings of the isolation plate and are used to control the opening and closing of the medium transmission paths between different fire extinguishing medium release ports. The controller is connected to the fire sensor and the solenoid valve in the cabinet assembly, respectively. The controller is used to control the working state of the solenoid valve corresponding to the fire extinguishing zone according to the sensing signals of each fire sensor.

2. The grid-connected box according to claim 1, characterized in that, The cabinets enclose a cavity, and the mounting plate is disposed within the cavity formed by the cabinets; or the cabinets and the mounting plate together enclose a cavity.

3. The grid-connected box according to claim 1, characterized in that, The mounting plate is also provided with a fire extinguishing medium input port connected to the medium transmission path, and the grid-connected box further includes: The extinguishing medium bottle is connected to the extinguishing medium inlet of the mounting plate and is used to provide the extinguishing medium.

4. The grid-connected box according to claim 3, characterized in that, The fire extinguishing medium bottle is connected to the outer wall of the cabinet assembly.

5. The grid-connected box according to claim 3, characterized in that, The fire extinguishing medium bottle is disposed in the accommodating cavity formed by the cabinet assembly, and the fire extinguishing medium bottle is connected to the inner wall of the cabinet or to the mounting plate.

6. The grid-connected box according to claim 1, characterized in that, The extinguishing medium is contained in the buffer chamber.

7. The grid-connected box according to claim 1, characterized in that, The connecting plate includes a top plate, a bottom plate, and a side plate connected between the top plate and the bottom plate. The opening of the fire extinguishing chamber is located on the top plate. The isolation plate is connected to the side plate and the top plate respectively, and the extension direction of the isolation plate is parallel to the top plate and the bottom plate.

8. The grid-connected box according to claim 1, characterized in that, Each of the fire extinguishing zones is provided with multiple fire extinguishing medium release ports arranged in an array.

9. The grid-connected box according to claim 1, characterized in that, The mounting plate is a telescopic or splicing structure to match the dimensions of the cabinet.

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