External dehumidification equipment for low-voltage photovoltaic grid-connected metering cabinet

Abstract

The utility model belongs to the technical field of dehumidification devices, and particularly relates to an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet. The technical problem is that internal electronic components of a photovoltaic grid-connected metering cabinet are easy to be damaged by too high air humidity during working. According to the technical scheme, the external dehumidification equipment for the low-voltage photovoltaic grid-connected metering cabinet comprises a cabinet body assembly, the device further comprises a shell assembly, an air inducing assembly, a dehumidification assembly, a liquid storage assembly and a control assembly. Refrigerant is compressed through the compressor, the refrigerant is cooled in the condensation coil and releases heat, then the refrigerant evaporates in the evaporation coil and absorbs moisture in the air, and finally the dried air is discharged after being heated, so that the indoor humidity is reduced, and the whole process is circularly carried out; therefore, the air humidity in the low-voltage photovoltaic grid-connected metering cabinet is reduced, and the problem that internal electronic components of the photovoltaic grid-connected metering cabinet are easily affected by moisture and damaged is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dehumidification devices, and particularly relates to an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet. Background Art

[0002] A low-voltage photovoltaic grid-connected metering cabinet is an electrical device specifically used for the metering and monitoring of electric energy in a photovoltaic power generation system. It mainly consists of a high-voltage circuit breaker, current transformers, voltage transformers, metering instruments, protection components, etc. In the prior art, in order to ensure the normal operation of the internal electronic components of the photovoltaic grid-connected metering cabinet, it is necessary to ensure that the inside of the photovoltaic grid-connected metering cabinet is as dry as possible. However, the air humidity varies in different regions, resulting in the operation of the photovoltaic grid-connected metering cabinet being affected in regions with lower humidity, and in severe cases, the problem of damage to the photovoltaic grid-connected metering cabinet may occur. Summary of the Utility Model

[0003] In order to overcome the problem that when a photovoltaic grid-connected metering cabinet is arranged in a region with lower humidity during its use, it may cause damage to the internal electronic components of the photovoltaic grid-connected metering cabinet during subsequent use.

[0004] The technical solution of the utility model is: an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet, including a cabinet body component; further including a housing component, an air induction component, a dehumidification component, a liquid storage component and a control component; the cabinet body component is provided with a housing component for installation; the housing component is provided with an air induction component for sucking air; the housing component is provided with a dehumidification component for dehumidification; the housing component is provided with a liquid storage component for storing liquid; the housing component is provided with a control component for control.

[0005] Preferably, by installing the housing component on the right side of the ventilation net of the low-voltage photovoltaic grid-connected metering cabinet, and the control component senses the humidity condition and set value inside the low-voltage photovoltaic grid-connected metering cabinet. When the air inside the low-voltage photovoltaic grid-connected metering cabinet reaches the condition that needs to be dehumidified, the air induction component adsorbs the air flow inside the low-voltage photovoltaic grid-connected metering cabinet, the dehumidification component dehumidifies the air flow inside the low-voltage photovoltaic grid-connected metering cabinet, and the liquid storage component stores the accumulated water generated by the dehumidification component, thus solving the problem that arranging a photovoltaic grid-connected metering cabinet in a region with lower humidity may cause damage to the internal electronic components of the photovoltaic grid-connected metering cabinet during subsequent use.

[0006] As a preference, the cabinet body component includes a low-voltage photovoltaic grid-connected metering cabinet, an installation groove, a ventilation net; the right outer wall of the photovoltaic grid-connected metering cabinet is provided with uniformly distributed installation grooves; the right end of the photovoltaic grid-connected metering cabinet is provided with a ventilation net, and the ventilation net communicates with the inside of the low-voltage photovoltaic grid-connected metering cabinet, which is convenient for the subsequent dehumidification device to carry out dehumidification work.

[0007] Preferably, the outer shell assembly includes an installation shell, a first groove, a fixing plate, an ear plate, a screw sleeve, a stud, a drainage hole, and a first ventilation groove; an installation shell is movably arranged at the right end of the low-voltage photovoltaic grid-connected metering cabinet; a first groove is opened at the upper end of the installation shell; symmetric fixing plates are fixedly connected to the front and rear ends of the inner wall of the installation shell; uniformly distributed ear plates are fixedly connected to the left end of the installation shell; the inner walls of the ear plates correspond to the installation grooves one by one; uniformly distributed screw sleeves are fixedly connected to the lower end of the installation shell; studs are threadedly installed at the lower ends of the screw sleeves; a drainage hole and a first ventilation groove are opened at the right end of the installation shell. By rotating the stud in the screw sleeve, the installation shell can be stably supported on the ground, and then the installation shell is fixed on the installation groove on the outer wall of the right end of the low-voltage photovoltaic grid-connected metering cabinet through the ear plates, and the studs are used to prevent damage to the low-voltage photovoltaic grid-connected metering cabinet caused by the overweight of the right end of the installation shell.

[0008] Preferably, the air guiding assembly includes a ventilation plate, a fan, and a second ventilation groove; a ventilation plate is fixedly connected to the left end of the installation shell; a fan is arranged at the right end of the ventilation plate; second ventilation grooves are penetrated through the left and right ends of the ventilation plate; the second ventilation grooves communicate with the installation shell; the left end of the ventilation plate is attached to the right end of the low-voltage photovoltaic grid-connected metering cabinet. By turning on the fan on the ventilation plate, the gas inside the low-voltage photovoltaic grid-connected metering cabinet can be introduced into the installation shell through the ventilation net of the low-voltage photovoltaic grid-connected metering cabinet.

[0009] Preferably, the dehumidification assembly includes a compressor, an evaporation coil, and a condensation coil; a compressor is fixedly connected to the lower end of the inner wall of the installation shell; the evaporation coil and the condensation coil are respectively fixedly connected to the lower ends of the two fixing plates; the evaporation coil and the condensation coil are connected by the compressor. The compressor compresses the refrigerant, the refrigerant cools and releases heat in the condensation coil, then evaporates and absorbs the moisture in the air in the evaporation coil, and finally the dry air is discharged after being heated, thereby reducing the indoor humidity. The whole process is carried out cyclically, thereby reducing the air humidity in the low-voltage photovoltaic grid-connected metering cabinet.

[0010] Preferably, the liquid storage assembly includes a liquid storage box, a connection port, and a water level detector; a liquid storage box is fixedly connected to the lower end of the inner wall of the installation shell; a connection port is fixedly connected to the right end of the liquid storage box; the connection port passes through the drainage hole and extends to the outer wall of the right end of the installation shell; a water level detector is fixedly connected to the right end of the inner wall of the liquid storage box. The liquid storage box is used to collect the water droplets generated during the process of the evaporation coil evaporating the air humidity. When the liquid in the liquid storage box reaches the position of the water level detector, the dehumidification assembly stops dehumidifying work. By inserting a pipe into the connection port, the liquid in the liquid storage box is discharged.

[0011] Preferably, the control component includes a console, a controller and a humidity detector; the inner wall of the first tank body is hinged with a console; the lower end of the console is fixedly connected with a controller and a humidity detector; the console and the humidity detector are electrically connected through the controller. The air inside the low-voltage photovoltaic grid-connected metering cabinet is monitored by the humidity detector. When the humidity exceeds the standard, the air extraction component and the dehumidification component are turned on through the controller to carry out dehumidification work.

[0012] Advantages of the utility model:

[0013] 1. The refrigerant is compressed by the compressor, cooled and releases heat in the condensation coil, then evaporates and absorbs moisture in the air in the evaporation coil, and finally the dry air is discharged after heating, thereby reducing the indoor humidity. The whole process circulates, thus reducing the air humidity in the low-voltage photovoltaic grid-connected metering cabinet and solving the problem that the internal electronic components of the photovoltaic grid-connected metering cabinet are easily damaged by moisture.

[0014] 2. By rotating the stud in the nut sleeve, the installation shell can be stably supported on the ground, and then the installation shell is fixed to the outer wall of the right end of the low-voltage photovoltaic grid-connected metering cabinet through the ear plate, and the stud is used to prevent the right end of the installation shell from being too heavy and causing damage to the low-voltage photovoltaic grid-connected metering cabinet, thus facilitating external installation.

[0015] 3. The liquid storage box is used to collect the water droplets generated during the evaporation of the air humidity by the evaporation coil. When the liquid in the liquid storage box reaches the position of the water level detector, the dehumidification component stops dehumidifying, and the liquid in the liquid storage box is discharged by inserting a pipe into the connection port. Description of the drawings

[0016] Figure 1 Shown is a three-dimensional structural schematic diagram of an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet of the present utility model;

[0017] Figure 2 Shown is a three-dimensional structural schematic diagram of the housing component and the air extraction component of an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet of the present utility model;

[0018] Figure 3 Shown is a three-dimensional structural schematic diagram of the housing component of an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet of the present utility model;

[0019] Figure 4 Shown is a three-dimensional structural schematic diagram of the dehumidification component of an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet of the present utility model;

[0020] Figure 5 Shown is a three-dimensional structural schematic diagram of the liquid storage component of an external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet of the present utility model;

[0021] Figure 6 The figure shows a three-dimensional structural schematic diagram of a control component of an externally connected dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet of the present utility model;

[0022] Figure 7 The figure shows a three-dimensional structural schematic diagram of a cabinet component of an externally connected dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet of the present utility model.

[0023] The reference signs in the drawings are: 1 - cabinet component, 101 - low-voltage photovoltaic grid-connected metering cabinet, 102 - installation groove, 103 - ventilation net, 2 - housing component, 201 - installation shell, 202 - first groove body, 203 - fixing plate, 204 - ear plate, 205 - screw sleeve, 206 - stud, 207 - drainage hole, 208 - first ventilation groove, 3 - air guiding component, 301 - ventilation plate, 302 - fan, 303 - second ventilation groove, 4 - dehumidification component, 401 - compressor, 402 - evaporation coil, 403 - condensation coil, 5 - liquid storage component, 501 - liquid storage box, 502 - connection port, 503 - water level detector, 6 - control component, 601 - control console, 602 - controller, 603 - humidity detector. Detailed implementation manners

[0024] The present utility model will be further described below with reference to the drawings and embodiments.

[0025] Please refer to Figure 1 , the present utility model provides an embodiment: an externally connected dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet, including a cabinet component 1; further including a housing component 2, an air guiding component 3, a dehumidification component 4, a liquid storage component 5 and a control component 6; a housing component 2 for installation is provided on the cabinet component 1; an air guiding component 3 for sucking air is provided on the housing component 2; a dehumidification component 4 for dehumidifying is provided on the housing component 2; a liquid storage component 5 for storing liquid is provided on the housing component 2; a control component 6 for controlling is provided on the housing component 2.

[0026] Please refer to Figure 7 , in this embodiment, the cabinet component 1 includes a low-voltage photovoltaic grid-connected metering cabinet 101, an installation groove 102, and a ventilation net 103; uniformly distributed installation grooves 102 are formed on the outer wall of the right end of the photovoltaic grid-connected metering cabinet 101; a ventilation net 103 is formed at the right end of the photovoltaic grid-connected metering cabinet 101.

[0027] Please refer to Figures 2-3In this embodiment, the housing assembly 2 includes a mounting shell 201, a first slot body 202, a fixing plate 203, an ear plate 204, a screw sleeve 205, a stud 206, a drainage hole 207 and a first ventilation slot 208; the right end of the low-voltage photovoltaic grid-connected metering cabinet 101 is movably provided with a mounting shell 201; the upper end of the mounting shell 201 is provided with a first slot body 202; symmetrical fixing plates 203 are fixedly connected to the front and rear ends of the inner wall of the mounting shell 201; the left end of the mounting shell 201 is fixedly connected to evenly distributed ear plates 204; the inner wall of the ear plate 204 corresponds one-to-one to the mounting slot 102; the lower end of the mounting shell 201 is fixedly connected to the mounting slot 102; It is connected with evenly distributed screw sleeves 205; the lower end of the screw sleeve 205 is threaded with a stud 206; the right end of the mounting shell 201 is provided with a drainage hole 207 and a first ventilation slot 208, and the air induction component 3 includes a ventilation plate 301, a fan 302 and a second ventilation slot 303; the left end of the mounting shell 201 is fixedly connected with a ventilation plate 301; the right end of the ventilation plate 301 is provided with a fan 302; the left and right ends of the ventilation plate 301 are penetrated by a second ventilation slot 303; the second ventilation slot 303 and the mounting shell 201 are mutually connected; the left end of the ventilation plate 301 is in contact with the right end of the low-voltage photovoltaic grid-connected metering cabinet 101.

[0028] See also Figure 4 In this embodiment, the dehumidification component 4 includes a compressor 401, an evaporation coil 402 and a condensation coil 403; the compressor 401 is fixedly connected to the lower end of the inner wall of the mounting shell 201; the evaporation coil 402 and the condensation coil 403 are respectively fixedly connected to the lower ends of the two fixing plates 203; the evaporation coil 402 and the condensation coil 403 are connected through the compressor 401.

[0029] See also Figure 5 In this embodiment, the liquid storage component 5 includes a liquid storage box 501, a connecting port 502 and a water level detector 503; the liquid storage box 501 is fixedly connected to the lower end of the inner wall of the mounting shell 201; the connecting port 502 is fixedly connected to the right end of the liquid storage box 501; the connecting port 502 extends through the drainage hole 207 to the right end outer wall of the mounting shell 201; the water level detector 503 is fixedly connected to the right end of the inner wall of the liquid storage box 501.

[0030] See also Figure 6 In this embodiment, the control component 6 includes a control console 601, a controller 602 and a humidity detector 603; the inner wall of the first trough body 202 is hinged with the control console 601; the lower end of the control console 601 is fixedly connected with the controller 602 and the humidity detector 603; the control console 601 and the humidity detector 603 are electrically connected through the controller 602.

[0031] By rotating the stud 206 in the screw sleeve 205, the installation shell 201 can be stably supported on the ground, and then the installation shell 201 is fixed to the outer wall of the right end of the low-voltage photovoltaic grid-connected metering cabinet 101 through the ear plate 204, and the stud 206 is used to prevent damage to the low-voltage photovoltaic grid-connected metering cabinet 101 caused by the excessive weight of the right end of the installation shell 201;

[0032] The humidity detector 603 monitors the air inside the low-voltage photovoltaic grid-connected metering cabinet 101. When the humidity exceeds the standard, the controller 602 turns on the fan 302 on the ventilation plate 301 to introduce the gas inside the low-voltage photovoltaic grid-connected metering cabinet 101 into the installation shell 201;

[0033] Then, the compressor 401 compresses the refrigerant. The refrigerant is cooled and releases heat in the condensation coil 403, then evaporates in the evaporation coil 402 and absorbs the moisture in the air. Finally, the dry air is discharged after being heated, thereby reducing the indoor humidity. The whole process is carried out in a cycle, thereby reducing the air humidity in the low-voltage photovoltaic grid-connected metering cabinet 101. The liquid storage box 501 is used to collect the water droplets generated during the evaporation of the air humidity by the evaporation coil 402. When the liquid in the liquid storage box 501 reaches the position of the water level detector 503, the dehumidification component 4 stops dehumidifying, and the liquid in the liquid storage box 501 is discharged by inserting a pipe into the connection port 502.

[0034] Through the above steps, by installing the housing assembly 2 on the ventilation net of the cabinet assembly 1, and the control assembly 6 senses the humidity condition and the set value inside the cabinet assembly 1. When the air inside the cabinet assembly 1 reaches the condition that needs to be dehumidified, the air flow inside the cabinet assembly 1 is adsorbed by the air guiding assembly 3, the air flow inside the cabinet assembly 1 is dehumidified by the dehumidification component 4, and the accumulated water generated by the dehumidification component 4 is stored by the liquid storage component 5, which solves the problem that arranging the photovoltaic grid-connected metering cabinet in an area with low humidity may cause damage to the internal electronic components of the photovoltaic grid-connected metering cabinet during subsequent use.

[0035] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. An external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet, comprising a cabinet body assembly (1); characterized in that: It also includes a housing assembly (2), an air induction assembly (3), a dehumidification assembly (4), a liquid storage assembly (5) and a control assembly (6); the cabinet body assembly (1) is provided with a housing assembly (2) for installation; the housing assembly (2) is provided with an air induction assembly (3) for sucking air; the housing assembly (2) is provided with a dehumidification assembly (4) for dehumidifying; the housing assembly (2) is provided with a liquid storage assembly (5) for storing liquid; the housing assembly (2) is provided with a control assembly (6) for controlling.

2. The external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet according to claim 1, wherein: The cabinet body assembly (1) includes a low-voltage photovoltaic grid-connected metering cabinet (101), an installation groove (102), and a ventilation net (103). The outer wall of the right end of the photovoltaic grid-connected metering cabinet (101) is provided with evenly distributed installation grooves (102); the right end of the photovoltaic grid-connected metering cabinet (101) is provided with a ventilation net (103).

3. The external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet according to claim 2, wherein: The housing assembly (2) includes an installation shell (201), a first groove body (202), a fixing plate (203), an ear plate (204), a screw sleeve (205), a stud (206), a drainage hole (207) and a first ventilation groove (208); the right end of the photovoltaic grid-connected metering cabinet (101) is movably provided with an installation shell (201); the upper end of the installation shell (201) is provided with a first groove body (202); the front and rear ends of the inner wall of the installation shell (201) are fixedly connected with symmetric fixing plates (203); the left end of the installation shell (201) is fixedly connected with evenly distributed ear plates (204); the inner walls of the ear plates (204) correspond to the installation grooves (102) one by one; the lower end of the installation shell (201) is fixedly connected with evenly distributed screw sleeves (205); the lower end of the screw sleeve (205) is threadedly installed with a stud (206); the right end of the installation shell (201) is provided with a drainage hole (207) and a first ventilation groove (208).

4. The external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet according to claim 3, wherein: The air induction assembly (3) includes a ventilation plate (301), a fan (302) and a second ventilation groove (303); the left end of the installation shell (201) is fixedly connected with a ventilation plate (301); the right end of the ventilation plate (301) is provided with a fan (302); the left and right ends of the ventilation plate (301) are penetrated and provided with second ventilation grooves (303); the second ventilation grooves (303) communicate with the installation shell (201); the left end of the ventilation plate (301) is attached to the right end of the low-voltage photovoltaic grid-connected metering cabinet (101).

5. An external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet according to claim 3, characterized in that: The dehumidification assembly (4) includes a compressor (401), an evaporation coil (402) and a condensation coil (403); the compressor (401) is fixedly connected to the lower end of the inner wall of the installation shell (201); the lower ends of the two fixing plates (203) are respectively fixedly connected with an evaporation coil (402) and a condensation coil (403); the evaporation coil (402) and the condensation coil (403) are connected by the compressor (401).

6. The external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet according to claim 5, characterized in that: The liquid storage component (5) includes a liquid storage box (501), a connection port (502), and a water level detector (503); the lower end of the inner wall of the installation shell (201) is fixedly connected with the liquid storage box (501); the right end of the liquid storage box (501) is fixedly connected with the connection port (502); the connection port (502) passes through the drainage hole (207) and extends to the outer wall of the right end of the installation shell (201); the right end of the inner wall of the liquid storage box (501) is fixedly connected with the water level detector (503).

7. An external dehumidification device for a low-voltage photovoltaic grid-connected metering cabinet according to claim 3, characterized in that: The control component (6) includes a control console (601), a controller (602), and a humidity detector (603); the control console (601) is hinged to the inner wall of the first tank body (202); the lower end of the control console (601) is fixedly connected with the controller (602) and the humidity detector (603); the control console (601) and the humidity detector (603) are electrically connected through the controller (602).

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