An electrical energy monitoring device for a distributed photovoltaic system

Abstract

The utility model discloses a kind of electric energy monitoring devices for distributed photovoltaic system applied to electric power device field, the airflow generated by heat dissipation fan drives driven slide bar, drive inclined guide vane is automatically opened in heat dissipation, automatically closed when stopping, both ensure that with outside airflow efficient circulation in heat dissipation process, enhance air circulation efficiency, can also isolate outside dust under non-working state, solved the contradiction that heat dissipation relies on opening groove in traditional heat dissipation structure, but opening groove is long-term open and easy to a large number of dust, the hollow inner slide frame is provided with accurate guidance by the plurality of inner extension protrusions of guide assembly, cooperate with the limiting effect of supporting horizontal sleeve frame to driven slide bar, effectively avoid inclined guide vane sliding deviation, ensure that opening and closing action is stable and reliable, adapt to the vibration, wind power etc. Interference of outdoor environment, and liquid cooling heat dissipation component can be selected to replace air cooling structure, without opening heat dissipation slot, can be directly applied in closed equipment warehouse.

Description

Technical Field

[0001] This utility model relates to the field of power equipment, and in particular to a power monitoring device for distributed photovoltaic systems. Background Technology

[0002] As the core equipment for grid-connected operation of photovoltaic systems, the power monitoring device of distributed photovoltaic systems is mainly used to collect and analyze key parameters such as voltage, current, and power of photovoltaic arrays in real time to ensure stable system operation.

[0003] Existing technology CN222319010U discloses a quality monitoring system for distributed photovoltaic (PV) power storage devices, specifically relating to the field of quality monitoring. It includes a monitoring device housing with two symmetrically arranged strip-shaped mounting ports parallel to the vertical direction at the front end. This invention facilitates automatic adjustment of the monitoring position, solving the problem that existing monitoring systems have difficulty adjusting the monitoring position, limiting monitoring to a fixed position of the distributed PV power storage device to monitor the power quality of the entire system, leading to high randomness and low accuracy in monitoring.

[0004] Existing technology CN220709231U discloses an online power quality monitoring device with a heat dissipation structure, including a housing, with a display panel disposed on the front exterior of the housing. This invention utilizes air vents on both sides of the upper surface of the housing, extending through the top of the housing. A fixing cylinder is used to mount a motor, which drives a fan to operate within the air vents, generating airflow that blows into the interior of the housing. A groove extends through the bottom interior of the housing, thereby improving the device's heat dissipation efficiency.

[0005] With the diversification of application scenarios for distributed photovoltaic systems, the open heat dissipation holes in existing monitoring devices can lead to the risk of dust ingress. Therefore, there are problems such as difficulty in balancing heat dissipation and dust prevention, and limited environmental adaptability. The power monitoring device for distributed photovoltaic systems proposed in this application adapts to different usage environments and meets the needs of diverse scenarios through the design of switchable heat dissipation components. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] The core of this utility model lies in solving the problems of existing technologies, such as difficulty in balancing heat dissipation and dust prevention, and limited environmental adaptability, through the design of switchable heat dissipation components, while meeting the needs of diverse scenarios.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] A power monitoring device for a distributed photovoltaic system includes an equipment assembly. The equipment assembly includes an equipment frame. Multiple load-bearing brackets are fixedly connected to the inner end of the equipment frame. A monitoring unit device is fixedly connected to the upper end of the load-bearing brackets. A wind-cooled linkage heat dissipation assembly is fixedly connected to the side end of the equipment frame. The wind-cooled linkage heat dissipation assembly includes two cooling fans fixedly connected to the lower inner side of the equipment frame. Side slots are symmetrically opened at the left and right ends of the equipment frame. A rectangular side plate is fixedly connected to the inner end of the side slot. Multiple vertically equidistant strip slots are opened on the outer side of the rectangular side plate. A hollow inner sliding frame is slidably connected to the inner end of the strip slot. An internal circular groove block is fixedly connected to the end of the hollow inner sliding frame near the cooling fan. A supporting horizontal sleeve is fixedly connected to the rear inner wall of the side slot. A driven slide rod is slidably connected to the end of the supporting horizontal sleeve away from the inner side wall of the side slot. A return spring is sleeved on the end of the driven slide rod away from the rectangular side plate.

[0011] Furthermore, an inclined airflow guide plate is fixedly connected to the end of the hollow inner sliding frame away from the built-in circular slot block, and an anti-detachment horizontal plate is fixedly connected to the lower side of the strip slot away from the cooling fan.

[0012] Furthermore, the anti-detachment cross plate is located at the side end of the hollow inner slide frame, and multiple driven slide rods are located between the cooling fan and the rectangular side plate, respectively.

[0013] Furthermore, a guide assembly is fixedly connected to the end of the rectangular side panel near the cooling fan.

[0014] Furthermore, the guide component includes multiple pairs of inner extension protrusions, which are respectively fixedly connected to the upper and lower sides of the strip-shaped slot near the cooling fan.

[0015] Optionally and preferably, a liquid cooling heat dissipation component is fixedly connected to the lower end of the load-bearing bracket, the liquid cooling heat dissipation component including a liquid cooling heat dissipation plate fixedly connected to the inner end of the load-bearing bracket.

[0016] Furthermore, the left and right ends of the liquid-cooled heat sink are symmetrically and fixedly connected with refrigerant flow side pipes, and a pump is connected to the outside of the refrigerant flow side pipes.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) This solution uses the airflow generated by the cooling fan to drive the driven slide bar, which drives the inclined guide plate to open automatically when cooling and close automatically when stopping. This ensures efficient airflow with the outside air during the cooling process, enhances airflow efficiency, and isolates external dust when not in operation. This solves the contradiction in traditional cooling structures where heat dissipation depends on the opening slot, but the opening slot is easy to accumulate a lot of dust if it is open for a long time.

[0020] (2) At the same time, the multiple pairs of inner extension convex strips of the guide component provide precise guidance for the hollow inner slide frame. Together with the support cross sleeve frame, they limit the movement of the driven slide rod, effectively preventing the oblique guide plate from sliding off, ensuring stable and reliable opening and closing action, and adapting to the vibration, wind and other interference of the outdoor environment.

[0021] (3) Liquid cooling heat dissipation components can be used to replace the air cooling structure. There is no need to open heat dissipation slots. It can be directly applied in the closed equipment compartment, effectively avoiding the dust entry problem caused by slots from the root. It is especially suitable for environments with high dust concentration and closed operation. Attached Figure Description

[0022] Figure 1 This is an exploded view of the shaft of the equipment component of this utility model;

[0023] Figure 2 This is a partial enlarged view of the lower part of the device component of this utility model;

[0024] Figure 3 This is an exploded view of the air-cooled heat dissipation component of this utility model;

[0025] Figure 4 A magnified view of a partial truncated section of the rectangular side plate of this utility model;

[0026] Figure 5 This is a side sectional view of the rectangular side plate of this utility model;

[0027] Figure 6 This is a diagram of the liquid cooling heat dissipation component of this utility model;

[0028] Figure 7 For the present utility model Figure 6 Enlarged view of a partial section of the liquid cooling heat dissipation component.

[0029] Explanation of the labels in the diagram:

[0030] 1. Equipment components; 100. Equipment frame; 101. Load-bearing bracket; 102. Monitoring unit device; 2. Air-cooled linkage heat dissipation assembly; 200. Cooling fan; 201. Side slot; 202. Rectangular side plate; 203. Angled guide plate; 204. Supporting cross sleeve; 205. Driven slide rod; 207. Return spring; 208. Strip slot; 209. Built-in round groove block; 210. Hollow inner slide frame; 211. Anti-detachment cross plate; 3. Guide assembly; 300. Inner extension protrusion; 4. Liquid cooling heat dissipation assembly; 400. Liquid cooling heat dissipation plate; 401. Refrigerant flow side pipe. Detailed Implementation

[0031] The technical solution will now be clearly and completely described with reference to the accompanying drawings in the embodiments of this utility model.

[0032] Example 1:

[0033] Please see Figures 1-5 The system includes equipment component 1, which includes an equipment frame 100. Multiple load-bearing supports 101 are fixedly connected to the inner end of the equipment frame 100. A monitoring unit device 102 is fixedly connected to the upper end of each load-bearing support 101. A wind-cooled integrated heat dissipation component 2 is fixedly connected to the side end of the equipment frame 100. The wind-cooled integrated heat dissipation component 2 includes two cooling fans 200 fixedly connected to the lower inner side of the equipment frame 100 (optional model: ADDAAD0612HB-A73GL). Side slots 201 are symmetrically opened at both ends of the equipment frame 100. A rectangular side plate 202 is fixedly connected to the inner end of each side slot 201. Multiple vertically equidistant strips are opened on the outer side of the rectangular side plate 202. The slot 208 has a hollow inner slide frame 210 slidably connected to its inner end. The hollow inner slide frame 210 is fixedly connected to a built-in circular groove block 209 at one end near the cooling fan 200. The cooling fan 200 is driven by a motor. The rear inner wall of the side slot 201 is fixedly connected to a supporting cross sleeve 204. The end of the supporting cross sleeve 204 away from the inner side wall of the side slot 201 is slidably connected to a driven slide rod 205. One side of the driven slide rod 205 is provided with a windward plate to increase the windward area, so that it can be stably pushed by the airflow. The end of the driven slide rod 205 away from the rectangular side plate 202 is fitted with a return spring 207. The return spring 207 is made of piano wire and has high elastic limit and fatigue resistance.

[0034] A slanted guide plate 203 is fixedly connected to one end of the hollow inner sliding frame 210 away from the built-in circular groove block 209. A cross plate 211 is fixedly connected to the lower side of the strip slot 208 away from the cooling fan 200. The cross plate 211 is located at the side end of the hollow inner sliding frame 210. Multiple driven sliding rods 205 are respectively located between the cooling fan 200 and the rectangular side plate 202. A guide component 3 is fixedly connected to one end of the rectangular side plate 202 near the cooling fan 200. The guide component 3 includes multiple pairs of inner extension protrusions 300. The multiple pairs of inner extension protrusions 300 are fixedly connected to the upper and lower sides of the strip slot 208 near the cooling fan 200.

[0035] Please see Figures 1-5In equipment component 1, multiple load-bearing brackets 101 fixedly connected to the inner end of the equipment frame 100 provide stable installation support for the monitoring unit device 102 at the upper end. The monitoring unit device 102 monitors the voltage, current, power and other electrical energy parameters of the distributed photovoltaic system in real time. Two cooling fans 200 on the lower inner side of the equipment frame 100 generate directional airflow after starting. The side slots 201 symmetrically opened at both ends of the equipment frame 100 provide airflow channels. The support cross sleeve 204 fixed to the inner wall of the side slots 201 provides sliding guidance for the driven slide rod 205. The return spring 207 sleeved on the end of the driven slide rod 205 away from the rectangular side plate 202 provides elastic return force when it slides. Since multiple driven slide rods 205 are all located between the cooling fans 200 and the rectangular side plate 202, the airflow can directly act on the driven slide rods. The slide bar 205 drives it to slide along the supporting cross sleeve 204, thereby driving the hollow inner slide frame 210 and the inclined guide plate 203 to move synchronously. During the heat dissipation process, the inclined guide plate 203 opens with the airflow to circulate with the outside airflow, enhancing the air circulation efficiency. When the heat dissipation stops, the wind stops, the reset spring 207 resets and drives the inclined guide plate 203 to close, playing a dustproof role in isolating external dust. In the guide component 3, which is fixedly connected to the end of the rectangular side plate 202 near the cooling fan 200, multiple pairs of inner extension protrusions 300 are respectively fixed on the upper and lower sides of the strip slot 208 near the cooling fan 200, providing precise guidance for the sliding of the hollow inner slide frame 210, preventing it from deviating, and ensuring the stable movement of the inclined guide plate 203. It is suitable for non-enclosed scenarios such as outdoor open photovoltaic power stations and rooftop distributed photovoltaic arrays.

[0036] Example 2:

[0037] Please see Figures 6-7 The lower end of the load-bearing bracket 101 is fixedly connected to a liquid cooling heat dissipation component 4. The liquid cooling heat dissipation component 4 includes a liquid cooling heat dissipation plate 400 fixedly connected to the inner end of the load-bearing bracket 101. The left and right ends of the liquid cooling heat dissipation plate 400 are symmetrically fixedly connected to a refrigerant flow side pipe 401. A pump is connected to the refrigerant flow side pipe 401. The optional model is SPG200S.

[0038] In this embodiment, the liquid cooling heat dissipation assembly 4 has a liquid cooling heat dissipation plate 400 in close contact with the load-bearing bracket 101, directly absorbing the heat generated by the monitoring unit device 102 and the load-bearing bracket 101 through heat conduction. The refrigerant flow side pipes 401, which are symmetrically fixed at both ends of the liquid cooling heat dissipation plate 400, are connected to external pumps. Driven by the pumps, the low-temperature refrigerant enters the liquid cooling heat dissipation plate 400 along the refrigerant flow side pipes 401, absorbs heat, and then flows back to the cooling device through the other refrigerant flow side pipe 401, forming a cycle that efficiently removes heat. This is suitable for equipment compartments that require a closed operating environment, eliminating the need for heat dissipation slots. As a replaceable component, the liquid cooling heat dissipation assembly 4 can be selectively and flexibly assembled with the air-cooled linkage heat dissipation assembly 2 through threaded installation, allowing the same set of equipment components 1 to adapt to different scenarios such as outdoor open and closed machine compartments, reducing the cost of adapting the equipment to different environments.

[0039] The above are merely preferred embodiments of this utility model; they encompass all the protection scope of this utility model. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be covered within the protection scope of this utility model.

Claims

1. An electric energy monitoring device for a distributed photovoltaic system, comprising a device assembly (1), characterized in that: The equipment component (1) includes an equipment frame (100), with multiple load-bearing brackets (101) fixedly connected to the inner end of the equipment frame (100). A monitoring unit device (102) is fixedly connected to the upper end of each load-bearing bracket (101). A wind-cooled linkage heat dissipation assembly (2) is fixedly connected to the side end of the equipment frame (100). The wind-cooled linkage heat dissipation assembly (2) includes two cooling fans (200) fixedly connected to the lower side of the inner end of the equipment frame (100). Side slots (201) are symmetrically opened at the left and right ends of the equipment frame (100). A rectangular side plate (202) is fixedly connected to the inner end of each side slot (201). The rectangular side plate (202) has multiple vertically equidistant strip slots (208) on its outer side. A hollow inner slide frame (210) is slidably connected to the inner end of the strip slot (208). A built-in circular groove block (209) is fixedly connected to the end of the hollow inner slide frame (210) near the cooling fan (200). A supporting horizontal sleeve (204) is fixedly connected to the rear inner wall of the side slot (201). A driven slide rod (205) is slidably connected to the end of the supporting horizontal sleeve (204) away from the inner side wall of the side slot (201). A return spring (207) is sleeved on the end of the driven slide rod (205) away from the rectangular side plate (202).

2. The electrical energy monitoring device for a distributed photovoltaic system of claim 1, wherein: The hollow inner sliding frame (210) is fixedly connected to an inclined guide plate (203) at the end away from the built-in circular groove block (209), and the strip slot (208) is fixedly connected to an anti-detachment horizontal plate (211) at the lower side of the end away from the cooling fan (200).

3. The electrical energy monitoring device for a distributed photovoltaic system of claim 2, wherein: The anti-detachment cross plate (211) is located at the side end of the hollow inner slide frame (210), and the multiple driven slide rods (205) are respectively located between the cooling fan (200) and the rectangular side plate (202).

4. The power monitoring device for a distributed photovoltaic system of claim 3, wherein: A guide assembly (3) is fixedly connected to one end of the rectangular side plate (202) near the cooling fan (200).

5. The electrical energy monitoring device for a distributed photovoltaic system of claim 4, wherein: The guide component (3) includes multiple pairs of inner extension protrusions (300), which are respectively fixedly connected to the upper and lower sides of the strip slot (208) near the cooling fan (200).

6. The power monitoring device for a distributed photovoltaic system of claim 1, wherein: The lower end of the load-bearing bracket (101) is fixedly connected to a liquid cooling heat dissipation assembly (4), which includes a liquid cooling heat dissipation plate (400) fixedly connected to the inner end of the load-bearing bracket (101).

7. The power monitoring device for a distributed photovoltaic system of claim 6, wherein: The liquid cooling heat sink (400) is symmetrically fixedly connected to the left and right ends of the refrigerant flow side pipe (401), and the refrigerant flow side pipe (401) is externally connected to a pump.

Images