Outdoor electric power metering cabinet with phase change energy storage and temperature control functions

Abstract

The invention provides an outdoor electric power metering cabinet with a phase change energy storage temperature control function, and belongs to the technical field of outdoor electric power metering cabinets, the outdoor electric power metering cabinet comprises a base, the upper end face of the base is fixedly connected with a cabinet body, and the rear side in the cabinet body is fixedly connected with a partition plate; in the application, through the arranged phase change temperature control assembly, depending on the phase change energy storage characteristic of the phase change medium, and by matching with the phase change blocks uniformly arranged on the partition plate, a heat absorption energy storage and heat release energy release bidirectional temperature control mechanism is constructed: under the high-temperature working condition, the liquid phase change medium in the phase change medium box is injected into the phase change blocks through a conveying pump, a liquid supply pipe and a liquid conveying pipe; liquid-to-gas phase change occurs after heat absorption, and heat in the cabinet is quickly consumed for cooling; under the low-temperature working condition, the controller starts the steam pump and the heating wire, the steam pump injects high-temperature saturated steam generated by heating in the phase-change medium box into the phase-change block through the air supply pipe and the connecting pipe, reverse phase change of the gaseous phase-change medium is pushed, a large amount of latent heat is released for heating, heat can be efficiently stored and slowly released, and temperature regulation and control are effectively achieved; the problem of poor temperature control regulation in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of outdoor power metering cabinet technology, and more specifically, to an outdoor power metering cabinet with phase change energy storage and temperature control. Background Technology

[0002] As a core terminal device in the power system, outdoor power metering cabinets are mainly used for power metering, distribution control, and line protection in outdoor environments. Their operational stability directly affects the accuracy of power metering, the reliability of power supply, and line safety. The outdoor environment is complex and changeable, with high temperatures and intense sunlight in summer and low temperatures in winter, often accompanied by interference from wind, rain, dust, and debris. This places extremely high demands on the temperature adaptability, protective performance, and ease of operation and maintenance of the metering cabinets.

[0003] A search revealed that Chinese patent CN221885657U discloses an outdoor power metering cabinet, comprising a base plate, an outer shell, and a partition. The partition divides the interior of the outer shell into a first chamber and a second chamber. During use, the heat generated in the first chamber is carried away by the condenser tube in the second chamber. When the solution content inside the storage tank decreases, the float will lower, and the sliding column slidably mounted on the slide groove will move downward. The positive electrode trigger fixed on the long plate moves down and connects with the negative electrode trigger on the outer wall of the storage tank, activating the alarm circuit. At this time, the alarm will sound a buzzer, indicating that the solution inside the storage tank is insufficient.

[0004] However, under extreme temperature differences of high cold and high heat, conventional air cooling fails and semiconductor cooling consumes too much energy. At the same time, in order to accommodate complex temperature control equipment, the layout space of electrical components is often compressed, making it difficult to inspect and repair deep components. It is difficult to simultaneously achieve constant temperature control with large heat capacity and all-round maintenance accessibility within a limited cabinet volume.

[0005] Therefore, we have made improvements and proposed an outdoor power metering cabinet with phase change energy storage and temperature control to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of poor temperature control and limited maintenance space in current power metering cabinets.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0008] An outdoor power metering cabinet with phase change energy storage and temperature control includes a base, a cabinet body fixedly connected to the upper surface of the base, a partition fixedly connected to the rear side of the cabinet body, openings on both the left and right side walls of the cabinet body, and side doors in each opening, the side doors being connected to the cabinet body via hinges, and further includes: A phase change temperature control component, mounted on the partition, is used to control the temperature of the outdoor power metering cabinet; The opening and closing mechanism, located inside the cabinet, is used to open and close the side door.

[0009] As a preferred technical solution of this application, the phase change temperature control component includes a set of mounting ports evenly opened on the partition, and a phase change block is fixedly connected to each mounting port. A liquid infusion pipe is fixedly connected to one side wall of each phase change block, and a liquid supply pipe is fixedly connected to the outer end of each liquid infusion pipe. A phase change medium tank is fixedly connected to the inner bottom wall of the cabinet, and a delivery pump is fixedly connected to the inner bottom wall of the cabinet. The output end of the delivery pump is fixedly connected to the bottom end of the liquid supply pipe. The output end of the delivery pump is connected to and fixedly connected to the phase change medium tank through an input pipe. The phase change medium tank is filled with liquid phase change medium, and there is a certain space between the liquid level of the phase change medium and the inner top wall of the phase change medium tank.

[0010] As a preferred technical solution of this application, an output gas pipe is fixedly connected to the top side wall of the phase change block, the outer end of the output gas pipe is connected to and fixedly connected to a cooling recovery box, a set of heat dissipation fins are uniformly fixedly connected to the outer side wall of the cooling recovery box, a first return pipe is fixedly connected to the bottom of the cooling recovery box, a branch pipe is fixedly connected to the bottom of the first return pipe, the bottom of the branch pipe is connected to and fixedly connected to the phase change medium box, a second return pipe is fixedly connected to the bottom of the phase change block, the bottom of the second return pipe is connected to and fixedly connected to the branch pipe, a second solenoid valve is installed on the output gas pipe, a third solenoid valve is installed on the first return pipe, and a fourth solenoid valve is installed on the second return pipe.

[0011] As a preferred technical solution of this application, a steam pump is fixedly connected to the upper end face of the phase change medium tank. The input end of the steam pump is connected to and fixedly connected to the phase change medium tank through a suction pipe. The output end of the steam pump is fixedly connected to a gas supply pipe. A set of connecting pipes corresponding to the number of phase change blocks are evenly fixedly connected to the gas supply pipe. The connecting pipes are respectively connected to and fixedly connected to the phase change blocks. A heating wire is fixedly connected inside the phase change medium tank. A first solenoid valve is installed on the infusion pipe. A fifth solenoid valve is installed on the connecting pipe.

[0012] As a preferred technical solution of this application, a liquid level sensor is installed on the upper surface of each phase change block, and a digital pressure gauge and a controller are respectively installed on the upper surface of the phase change medium tank. The liquid level sensor and the digital pressure gauge are electrically connected to the controller, and the controller is electrically connected to the delivery pump, the steam pump, the heating wire, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve and the fifth solenoid valve.

[0013] As a preferred technical solution of this application, the opening and closing assembly includes a bidirectional screw rotatably mounted on the top of the cabinet. Two movable blocks are symmetrically and threadedly connected to the bidirectional screw. Guide rods are slidably connected to each of the two movable blocks. The two ends of the guide rods are fixedly connected to the inner sidewalls of the cabinet. Arc-shaped rods are rotatably connected to the bottom ends of the two movable blocks. Connecting blocks are rotatably connected to the outer ends of the arc-shaped rods. Connecting blocks are fixedly connected to the inner sidewalls of the side doors. A worm gear is fixedly connected to the center of the bidirectional screw. An assembly frame is provided on the outer side of the worm gear. The top end of the assembly frame is fixedly connected to the inner top wall of the cabinet. A worm gear, meshing with the worm gear, is rotatably connected inside the assembly frame. A first bevel gear is fixedly connected to the bottom end of the worm gear. A rotating rod is rotatably connected to the outer side wall of the bottom end of the assembly frame. A second bevel gear, meshing with the first bevel gear, is fixedly connected to the inner end of the rotating rod. A knob is fixedly connected to the outer end of the rotating rod.

[0014] As a preferred technical solution of this application, a temperature sensor is fixedly connected to the top of the front side wall of the partition, and the temperature sensor is electrically connected to the controller.

[0015] As a preferred technical solution of this application, heat dissipation vents are provided on the rear sides of both the left and right side walls of the cabinet, and filters are fixedly connected inside the heat dissipation vents.

[0016] As a preferred technical solution of this application, the front side wall of the cabinet is rotatably connected to a cabinet door via a hinge, and a blocking block is fixedly connected to the upper surface of the cabinet.

[0017] As a preferred technical solution of this application, the rear end of the cabinet is symmetrically and fixedly connected with two mounting strips, and the outer side of each of the two mounting strips is provided with a maintenance plate, which is fixedly connected to the mounting strip by hexagonal bolts.

[0018] In the scheme of this application: 1. By setting up a phase change temperature control component, relying on the phase change energy storage characteristics of the phase change medium, and in conjunction with the phase change blocks evenly arranged on the partition, a two-way temperature control mechanism of heat absorption and energy storage and heat release is constructed: Under high temperature conditions, the liquid phase change medium in the phase change medium tank is injected into the phase change block through the delivery pump, liquid supply pipe, and liquid delivery pipe. After absorbing heat, it undergoes a liquid-to-gas phase change, quickly consuming the heat in the cabinet and cooling down; Under low temperature conditions, the controller starts the steam pump and heating wire. The steam pump injects the high-temperature saturated steam generated by the heating in the phase change medium tank into the phase change block through the gas supply pipe and connecting pipe, driving the gaseous phase change medium to undergo a reverse phase change, releasing a large amount of latent heat and raising the temperature. It can efficiently store and slowly release heat, effectively achieve temperature regulation, and solve the problem of poor temperature control in the existing technology; 2. With the side doors and opening / closing components, operators only need to turn a knob to drive the two side doors to open and close synchronously via transmission components such as the rotating rod, the second bevel gear, and the first bevel gear. Through the integrated partition structure, the phase change block is cleverly used as a heat buffer medium and as a physical barrier for electrical partitioning. The side door opening mechanism is used as a thermal short-circuit protection mechanism under extreme high temperatures, which solves the risk of "thermal breakdown" after energy storage saturation of a single phase change material under ultra-long high-temperature cycles, and realizes the synergy of passive energy storage and active mechanical heat dissipation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the phase change temperature control component of the present invention; Figure 4 This is a schematic diagram of the internal structure of the phase change medium box of the present invention; Figure 5 This is a schematic diagram of the opening and closing component of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 For the present invention Figure 2 A front view structural diagram; Figure 8 This is a schematic diagram of the overall rear structure of the present invention.

[0020] In the diagram: 1. Base; 2. Cabinet; 3. Partition; 4. Side door; 5. Phase change temperature control component; 501. Phase change block; 502. Infusion pipe; 503. Supply pipe; 504. Phase change medium tank; 505. Transfer pump; 506. Input pipe; 507. Output gas pipe; 508. Cooling recovery tank; 509. Heat dissipation fins; 5010. First return pipe; 5011. Branch pipe; 5012. Second return pipe; 5013. Steam pump; 5014. Extraction pipe; 5015. Supply pipe; 5016. Connecting pipe; 5017. Heating wire; 5018. First solenoid valve; 5019. Second solenoid valve; 5020, Third Solenoid Valve; 5021, Fourth Solenoid Valve; 5022, Fifth Solenoid Valve; 5023, Liquid Level Sensor; 5024, Digital Pressure Gauge; 5025, Controller; 6, Opening / Closing Assembly; 601, Bidirectional Screw; 602, Moving Block; 603, Guide Rod; 604, Arc Rod; 605, Connecting Block; 606, Worm Gear; 607, Assembly Frame; 608, Worm; 609, First Bevel Gear; 6010, Rotating Rod; 6011, Second Bevel Gear; 6012, Knob; 7, Temperature Sensor; 8, Filter Screen; 9, Cabinet Door; 10, Shielding Block; 11, Mounting Strip; 12, Inspection Plate. Detailed Implementation

[0021] Please see Figures 1-8 This invention proposes an outdoor power metering cabinet with phase change energy storage and temperature control, including a base 1, a cabinet body 2 fixedly connected to the upper end face of the base 1, a partition 3 fixedly connected to the rear side of the cabinet body 2, openings on both the left and right side walls of the cabinet body 2, and side doors 4 in each opening, which are connected to the cabinet body 2 by hinges, and also includes: Phase change temperature control component 5 is installed on partition 3 and is used to control the temperature of outdoor power metering cabinet; The opening and closing component 6 is located inside the cabinet 2 and is used to open and close the side door 4.

[0022] This metering cabinet achieves comprehensive optimization through the phase change temperature control component 5. Relying on the phase change energy storage characteristics of the phase change medium, under high temperature conditions, the liquid phase change medium absorbs heat and undergoes a phase change (liquid to gas) to quickly consume a large amount of heat and rapidly reduce the internal temperature of the cabinet 2. Under low temperature conditions, the gaseous phase change medium undergoes a reverse phase change (gas to liquid) to release a large amount of latent heat, achieving efficient heating. Compared with traditional natural heat dissipation and heating methods, the temperature control response is faster and the effect is more uniform. Moreover, the phase change energy storage can achieve efficient storage and slow release of heat, avoiding sudden temperature rises and falls. The side door 4, in conjunction with the opening and closing component 6, provides maintenance personnel with a large maintenance space when repairing the power metering cabinet, making maintenance convenient for them.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the phase change temperature control component 5 includes a set of mounting ports evenly distributed on the partition plate 3, and a phase change block 501 is fixedly connected to each mounting port. A liquid infusion pipe 502 is fixedly connected to one side wall of each phase change block 501. A liquid supply pipe 503 is fixedly connected to the outer end of each liquid infusion pipe 502. A phase change medium tank 504 is fixedly connected to the inner bottom wall of the cabinet 2. A delivery pump 505 is fixedly connected to the inner bottom wall of the cabinet 2. The output end of the delivery pump 505 is fixedly connected to the bottom end of the liquid supply pipe 503. The output end of the delivery pump 505 is connected to and fixedly connected to the phase change medium tank 504 through the input pipe 506. The phase change medium tank 504 is filled with liquid phase change medium, and there is a certain space between the liquid level of the phase change medium and the inner top wall of the phase change medium tank 504.

[0024] When the outdoor temperature rises and the internal temperature of cabinet 2 exceeds the preset threshold, temperature sensor 7 transmits the temperature signal to controller 5025. Controller 5025 triggers the cooling and temperature control process: it controls the opening of the first solenoid valve 5018, the second solenoid valve 5019, and the third solenoid valve 5020, and the closing of the fourth solenoid valve 5021 and the fifth solenoid valve 5022. At the same time, it starts the delivery pump 505. The liquid phase change medium in the phase change medium tank 504 enters the delivery pump 505 through the input pipe 506. After being pressurized by the delivery pump 505, it is delivered to the liquid supply pipe 503, and then injected into the corresponding phase change block 501 through each liquid supply pipe 502. The liquid phase change medium absorbs the heat inside cabinet 2 in the phase change block 501 and undergoes a phase change, changing from liquid to gas. The phase change process consumes a large amount of heat, quickly reducing the internal temperature of cabinet 2 and realizing cooling and temperature control under high temperature conditions. The liquid level sensor 5023 monitors the liquid level of the phase change medium in the phase change block 501 in real time and transmits the signal to the controller 5025 to ensure a sufficient supply of phase change medium.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an output air pipe 507 is fixedly connected to the top side wall of the phase change block 501. The outer end of the output air pipe 507 is connected to and fixedly connected to a cooling recovery box 508. A set of heat dissipation fins 509 are evenly fixedly connected to the outer side wall of the cooling recovery box 508. The bottom end of the cooling recovery box 508 is fixedly connected to a first return pipe 5010. The bottom end of the first return pipe 5010 is fixedly connected to a branch pipe 5011. The bottom end of the branch pipe 5011 is connected to and fixedly connected to the phase change medium box 504. The bottom of the phase change block 501 is fixedly connected to a second return pipe 5012. The bottom end of the second return pipe 5012 is connected to and fixedly connected to the branch pipe 5011. A second solenoid valve 5019 is installed on the output air pipe 507. A third solenoid valve 5020 is installed on the first return pipe 5010. A fourth solenoid valve 5021 is installed on the second return pipe 5012.

[0026] After the phase change medium changes from liquid to gas, it enters the cooling recovery tank 508 through the output air pipe 507. The heat dissipation fins 509 on the outer wall of the cooling recovery tank 508 increase the heat dissipation area and quickly dissipate the heat of the gaseous phase change medium to the outside air, causing the gaseous phase change medium to cool and condense into liquid. The cooled liquid phase change medium flows back to the phase change medium tank 504 through the first return pipe 5010 and the branch pipe 5011, completing the cooling recovery of the phase change medium and re-participating in the temperature control cycle.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a steam pump 5013 is fixedly connected to the upper end face of the phase change medium tank 504. The input end of the steam pump 5013 is connected to the phase change medium tank 504 through the air extraction pipe 5014 and is fixedly connected. The output end of the steam pump 5013 is fixedly connected to the air supply pipe 5015. A set of connecting pipes 5016, corresponding in number to the phase change blocks 501, are evenly fixedly connected to the air supply pipe 5015. The connecting pipes 5016 are respectively connected to and fixedly connected to the phase change blocks 501. A heating wire 5017 is fixedly connected inside the phase change medium tank 504. A first solenoid valve 5018 is installed on the infusion pipe 502, and a fifth solenoid valve 5022 is installed on the connecting pipe 5016.

[0028] When the outdoor temperature drops and the internal temperature of cabinet 2 falls below a preset threshold, temperature sensor 7 transmits a temperature signal to controller 5025. Controller 5025 triggers a temperature control process, closing the first solenoid valve 5018, the second solenoid valve 5019, and the third solenoid valve 5020, while opening the fourth solenoid valve 5021 and the fifth solenoid valve 5022. Simultaneously, heating wire 5017 is activated to provide auxiliary heating for the residual phase change medium in phase change medium tank 504. Phase change medium tank 504 is pre-evacuated and filled with a low-boiling-point phase change working fluid (such as R134a or fluorinated liquid). Under low-temperature conditions, the controller activates heating wire 5017, causing the working fluid to boil and generate high-temperature, high-pressure steam. The high-temperature steam pump 5013 is started to pressurize steam into the cavity of the phase change block 501 through the gas supply pipe 5015, with the height higher than the phase change medium tank 504. The condensed liquid working fluid overcomes the pipe resistance under the action of gravity and flows back to the phase change medium tank 504 through the second return pipe 5012 and the branch pipe 5011, completing a closed thermodynamic cycle. This drives the gaseous phase change medium in the phase change block 501 to undergo a reverse phase change, releasing a large amount of latent heat of phase change and increasing the internal temperature of the cabinet 2. At the same time, the liquid phase change medium in the phase change block 501 flows back to the phase change medium tank 504 through the second return pipe 5012 and the branch pipe 5011, completing the recovery and circulation of the phase change medium and ensuring the continuous operation of subsequent temperature control.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a liquid level sensor 5023 is installed on the upper surface of the phase change block 501, and a digital pressure gauge 5024 and a controller 5025 are installed on the upper surface of the phase change medium tank 504. The liquid level sensor 5023 and the digital pressure gauge 5024 are electrically connected to the controller 5025. The controller 5025 is electrically connected to the delivery pump 505, the steam pump 5013, the heating wire 5017, the first solenoid valve 5018, the second solenoid valve 5019, the third solenoid valve 5020, the fourth solenoid valve 5021, and the fifth solenoid valve 5022.

[0030] The liquid level sensor 5023 can monitor the liquid level of the liquid phase change medium in the phase change block 501 for easy replenishment and release. The digital pressure gauge 5024 can easily monitor the pressure in the phase change medium tank 504. The controller 5025 automatically triggers the heating, cooling or cooling recovery process according to the preset threshold, and accurately controls the start-stop and operation status of various valves such as the delivery pump 505, steam pump 5013, heating wire 5017, first solenoid valve 5018, and second solenoid valve 5019. No manual intervention is required, and the temperature control accuracy is high and the response is fast.

[0031] like Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, the opening and closing assembly 6 includes a bidirectional screw 601 rotatably mounted on the top of the cabinet 2. Two moving blocks 602 are symmetrically and threadedly connected to the bidirectional screw 601. Guide rods 603 are slidably connected to each of the two moving blocks 602. The two ends of the guide rods 603 are fixedly connected to the inner sidewall of the cabinet 2. Arc-shaped rods 604 are rotatably connected to the bottom ends of the two moving blocks 602. Connecting blocks 605 are rotatably connected to the outer ends of the arc-shaped rods 604. Connecting blocks 605 are fixedly connected to the inner sidewall of the side door 4. A worm gear is fixedly connected to the center of the bidirectional screw 601. The outer side of the worm gear 606 is provided with an assembly frame 607. The top of the assembly frame 607 is fixedly connected to the inner top wall of the cabinet 2. The worm 608, which meshes with the worm gear 606, is rotatably connected inside the assembly frame 607. The bottom end of the worm 608 is fixedly connected to a first bevel gear 609. A rotating rod 6010 is rotatably connected to the outer wall of the bottom end of the assembly frame 607. The inner end of the rotating rod 6010 is fixedly connected to a second bevel gear 6011, which meshes with the first bevel gear 609. The outer end of the rotating rod 6010 is fixedly connected to a knob 6012.

[0032] The operator turns knob 6012, causing the rotating rod 6010 and the second bevel gear 6011 at the inner end of the rotating rod 6010 to rotate. The second bevel gear 6011 meshes with the first bevel gear 609 on the assembly frame 607, driving the first bevel gear 609 and the worm gear 608 to rotate, which in turn drives the bidirectional screw 601 to rotate. The two moving blocks 602 symmetrically threaded on the bidirectional screw 601 move relatively away from each other along the bidirectional screw 601 under the limiting and guiding action of the guide rod 603. During the movement of the moving blocks 602, they drive the arc rod 604 rotatably connected at the bottom to move. The arc rod 604 pulls the side door 4 to rotate around the hinge through the connecting block 605, realizing the opening and closing of the side door 4. After the side door 4 is opened, it provides a larger maintenance space, making it convenient for maintenance personnel to maintain the power metering cabinet.

[0033] like Figure 2As shown, a temperature sensor 7 is fixedly connected to the top of the front side wall of the partition 3. The temperature sensor 7 is electrically connected to the controller 5025. The temperature sensor 7 facilitates the monitoring of the temperature inside the cabinet 2 and enables automated temperature control.

[0034] like Figure 1 and Figure 3 As shown, heat dissipation vents are provided on the rear sides of both the left and right side walls of the cabinet 2, and filters 8 are fixedly connected inside the heat dissipation vents; the heat dissipation vents and filters 8 facilitate the heat dissipation of the heat dissipation fins 509.

[0035] like Figure 1 As shown, the front side wall of the cabinet 2 is connected to the cabinet door 9 by a hinge, and the upper end face of the cabinet 2 is fixedly connected to the shielding block 10; the cabinet door 9 facilitates the sealing of the cabinet 2.

[0036] like Figure 3 and Figure 8 As shown, two mounting strips 11 are symmetrically and fixedly connected to the rear end of the cabinet 2. Each mounting strip 11 has an inspection plate 12 on its outer side. The inspection plate 12 is fixedly connected to the mounting strip 11 by hexagonal bolts. The inspection plate 12 facilitates the sealing of the rear side of the cabinet 2 and also facilitates maintenance personnel to inspect the phase change temperature control component 5.

[0037] Specifically, in use, when the outdoor temperature rises and the temperature sensor 7 detects that the temperature exceeds a preset value, the temperature sensor 7 transmits the temperature signal to the controller 5025. The controller 5025 controls the first solenoid valve 5018, the second solenoid valve 5019, and the third solenoid valve 5020 to open, and the fourth solenoid valve 5021 and the fifth solenoid valve 5022 to close. At the same time, the delivery pump 505 is started. The liquid phase change medium in the phase change medium tank 504 enters the delivery pump 505 through the input pipe 506. After being pressurized by the delivery pump 505, it is delivered to the supply pipe 503, and then injected into the corresponding phase change block 501 through each delivery pipe 502. The phase change medium absorbs heat from the inside of the cabinet 2 within the phase change block 501, undergoing a phase change from liquid to gas. This phase change process consumes a large amount of heat, rapidly reducing the internal temperature of the cabinet 2. After the phase change medium changes from liquid to gas, it enters the cooling recovery tank 508 through the output air pipe 507. The heat dissipation fins 509 on the outer wall of the cooling recovery tank 508 increase the heat dissipation area, quickly dissipating the heat of the gaseous phase change medium to the outside air, causing the gaseous phase change medium to cool and condense into a liquid state. The cooled liquid phase change medium then flows back to the phase change medium tank 504 through the first return pipe 5010 and the branch pipe 5011, completing the cooling recovery of the phase change medium and allowing it to re-enter the temperature control cycle. When the outdoor temperature drops and the internal temperature of cabinet 2 falls below a preset threshold, temperature sensor 7 transmits a temperature signal to controller 5025. Controller 5025 triggers a temperature control process, closing the first solenoid valve 5018, the second solenoid valve 5019, and the third solenoid valve 5020, while opening the fourth solenoid valve 5021 and the fifth solenoid valve 5022. Simultaneously, heating wire 5017 is activated to provide auxiliary heating for the residual phase change medium in phase change medium tank 504. Under the heating action of heating wire 5017, the liquid phase change medium... The gas changes to a gaseous state. The steam pump 5013 draws the gas from the phase change medium tank 504 through the suction pipe 5014 and injects it into the phase change block 501 through the gas supply pipe 5015 and the connecting pipe 5016. This causes the gaseous phase change medium in the phase change block 501 to undergo a reverse phase change, releasing a large amount of latent heat of phase change and increasing the internal temperature of the cabinet 2. At the same time, the liquid phase change medium in the phase change block 501 flows back to the phase change medium tank 504 through the second return pipe 5012 and the branch pipe 5011, completing the recycling and circulation of the phase change medium and ensuring the continuous operation of subsequent temperature control. When maintenance is required, the operator turns knob 6012, causing the rotating rod 6010 and the second bevel gear 6011 at the inner end of the rotating rod 6010 to rotate. The second bevel gear 6011 meshes with the first bevel gear 609 on the mounting frame 607, driving the first bevel gear 609 and the worm gear 608 to rotate, which in turn drives the bidirectional screw 601 to rotate. The two moving blocks 602 symmetrically threaded on the bidirectional screw 601 move relatively away from each other along the bidirectional screw 601 under the limiting and guiding action of the guide rod 603. During the movement of the moving blocks 602, the arc rod 604 rotatably connected at the bottom end moves. The arc rod 604 pulls the side door 4 around the hinge through the connecting block 605, realizing the opening and closing of the side door 4. After the side door 4 is opened, it provides a larger maintenance space, making it convenient for maintenance personnel to maintain the power metering cabinet. Then the cabinet door 9 is opened to provide a larger maintenance space.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An outdoor power metering cabinet with phase change energy storage and temperature control, comprising a base (1), characterized in that, The upper surface of the base (1) is fixedly connected to a cabinet (2), and a partition (3) is fixedly connected to the rear side of the cabinet (2). Openings are provided on both the left and right side walls of the cabinet (2), and side doors (4) are provided in each opening. The side doors (4) are connected to the cabinet (2) via hinges. The cabinet also includes: A phase change temperature control component (5) is installed on the partition (3) and is used to control the temperature of the outdoor power metering cabinet. The phase change temperature control component (5) includes a set of mounting ports evenly opened on the partition (3), and a phase change block (501) is fixedly connected in each mounting port. A liquid infusion pipe (502) is fixedly connected to one side wall of the phase change block (501). A liquid supply pipe (503) is fixedly connected to the outer end of the liquid infusion pipe (502). A phase change medium tank (504) is fixedly connected to the inner bottom wall of the cabinet (2). A delivery pump (505) is fixedly connected to the inner bottom wall of the cabinet (2). The opening and closing component (6) is installed inside the cabinet (2) and is used to open and close the side door (4).

2. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 1, characterized in that, The output end of the delivery pump (505) is fixedly connected to the bottom end of the liquid supply pipe (503). The output end of the delivery pump (505) is connected to the phase change medium tank (504) through the input pipe (506) and is fixedly connected. The phase change medium tank (504) is filled with liquid phase change medium, and there is a certain space between the liquid surface of the phase change medium and the inner top wall of the phase change medium tank (504).

3. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 2, characterized in that, An output air pipe (507) is fixedly connected to the top side wall of the phase change block (501). The outer end of the output air pipe (507) is connected to and fixedly connected to a cooling recovery box (508). A set of heat dissipation fins (509) are evenly fixedly connected to the outer side wall of the cooling recovery box (508). The bottom end of the cooling recovery box (508) is fixedly connected to a first return pipe (5010). The bottom end of the first return pipe (5010) is fixedly connected to a branch pipe (5011). 1) The bottom end of the phase change medium box (504) is connected and fixedly connected. The bottom of each phase change block (501) is fixedly connected to a second return pipe (5012). The bottom end of the second return pipe (5012) is connected and fixedly connected to a branch pipe (5011). A second solenoid valve (5019) is installed on the output gas pipe (507). A third solenoid valve (5020) is installed on the first return pipe (5010). A fourth solenoid valve (5021) is installed on the second return pipe (5012).

4. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 2, characterized in that, A steam pump (5013) is fixedly connected to the upper end face of the phase change medium tank (504). The input end of the steam pump (5013) is connected to the phase change medium tank (504) through the suction pipe (5014) and is fixedly connected. The output end of the steam pump (5013) is fixedly connected to the air supply pipe (5015). A set of connecting pipes (5016) corresponding to the number of phase change blocks (501) are evenly fixedly connected on the air supply pipe (5015). The connecting pipes (5016) are respectively connected to the phase change blocks (501) and are fixedly connected. A heating wire (5017) is fixedly connected inside the phase change medium tank (504). A first solenoid valve (5018) is installed on the infusion pipe (502), and a fifth solenoid valve (5022) is installed on the connecting pipe (5016).

5. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 2, characterized in that, A liquid level sensor (5023) is installed on the upper surface of each phase change block (501). A digital pressure gauge (5024) and a controller (5025) are installed on the upper surface of each phase change medium tank (504). The liquid level sensor (5023) and the digital pressure gauge (5024) are electrically connected to the controller (5025). The controller (5025) is electrically connected to the delivery pump (505), the steam pump (5013), the heating wire (5017), the first solenoid valve (5018), the second solenoid valve (5019), the third solenoid valve (5020), the fourth solenoid valve (5021), and the fifth solenoid valve (5022).

6. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 1, characterized in that, The opening and closing assembly (6) includes a bidirectional screw (601) rotatably mounted on the top of the cabinet (2). Two moving blocks (602) are symmetrically and threadedly connected to the bidirectional screw (601). Guide rods (603) are slidably connected to both moving blocks (602). The two ends of the guide rods (603) are fixedly connected to the inner sidewall of the cabinet (2). Arc rods (604) are rotatably connected to the bottom ends of both moving blocks (602). Connecting blocks (605) are rotatably connected to the outer ends of the arc rods (604). Connecting blocks (605) are fixedly connected to the inner sidewall of the side door (4). A worm gear is fixedly connected to the center of the bidirectional screw (601). (606) An assembly frame (607) is provided on the outside of the worm gear (606). The top of the assembly frame (607) is fixedly connected to the inner top wall of the cabinet (2). A worm (608) that meshes with the worm gear (606) is rotatably connected inside the assembly frame (607). A first bevel gear (609) is fixedly connected to the bottom end of the worm gear (608). A rotating rod (6010) is rotatably connected to the outer wall of the bottom end of the assembly frame (607). A second bevel gear (6011) that meshes with the first bevel gear (609) is fixedly connected to the inner end of the rotating rod (6010). A knob (6012) is fixedly connected to the outer end of the rotating rod (6010).

7. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 1, characterized in that, A temperature sensor (7) is fixedly connected to the top of the front side wall of the partition (3), and the temperature sensor (7) is electrically connected to the controller (5025).

8. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 1, characterized in that, The cabinet (2) has heat dissipation vents on the rear side of both the left and right side walls, and each heat dissipation vent is fixedly connected with a filter screen (8).

9. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 1, characterized in that, The front side wall of the cabinet (2) is connected to a cabinet door (9) by a hinge, and a blocking block (10) is fixedly connected to the upper surface of the cabinet (2).

10. An outdoor power metering cabinet with phase change energy storage and temperature control according to claim 1, characterized in that, The cabinet (2) has two mounting strips (11) symmetrically and fixedly connected at the rear end. Each of the two mounting strips (11) has an inspection plate (12) on its outer side. The inspection plate (12) is fixedly connected to the mounting strip (11) by internal hex bolts.

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