Humidity real-time control device for electrical cabinet

Abstract

The utility model provides an electrical cabinet humidity real-time control device, which comprises an electrical cabinet and a controller, the humidity sensor is electrically connected with the controller and is used for detecting the air humidity in the electrical cabinet; the ionic membrane dehumidifier is arranged on the cabinet body wall of the electrical cabinet; the ionic membrane dehumidifier comprises an ionic membrane, a first electrode and a second electrode, and the first electrode and the second electrode are located inside and outside the electrical cabinet respectively; the controller is used for controlling the first electrode and the second electrode of the ionic membrane dehumidifier to be switched between the cathode and the anode. According to the utility model, the humidity value in the electrical cabinet can be detected in real time, and when the humidity value in the electrical cabinet is not within a set reasonable range, humidification and dehumidification can be realized by controlling polarity conversion of the two electrodes of the ionic membrane dehumidifier, so that the humidity in the electrical cabinet is adjusted to be within the set reasonable range; therefore, the normal use and the use safety of the electrical cabinet can be effectively ensured, and the service life of the electrical cabinet can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrical cabinet internal humidity control, specifically is a kind of electrical cabinet humidity real-time control device. BACKGROUND

[0002] High-voltage electrical cabinet is composed of shell, electrical components (including insulating devices), various mechanisms, secondary terminals and connecting wires, etc. The working performance of electrical components and various terminals is greatly affected by temperature and humidity. For example, when the humidity in the electrical cabinet is too high, it will lead to a decrease in insulation performance, and easily cause problems such as damage to insulating devices, discharge and tripping. Therefore, in order to improve the service life and safety of the electrical cabinet, it is of great significance to design an electrical cabinet humidity real-time control device, which has attracted great attention in recent years.

[0003] Many researchers limit the humidity control of electrical cabinets to traditional methods, which have poor control effect. For example, the electrical cabinet dehumidification device mentioned in the article "Research on Dehumidification and Condensation Prevention Technology of Electrical Cabinet and Development of Monitoring Platform" by Guan Zhijun uses heating and ventilation methods to control humidity. However, since temperature and humidity are related, using heating to control temperature will inevitably change humidity, which seriously affects the control effect of the entire system. Moreover, using ventilation to control humidity, the electrical cabinet may suck dust from the outside environment into the electrical cabinet during ventilation with the outside, which will accelerate the accumulation of dust in the electrical cabinet. The accumulation of dust in the electrical cabinet will cause the working performance of some electrical components to decrease, and increase the risk of electrical conduction, which may cause short circuit or circuit failure. In addition, harmful gases in the electrical cabinet may also be directly discharged into the air outside the cabinet, causing harm to the human body.

[0004] In the existing patent technology, the invention patent document with publication number CN117311426A discloses a high-voltage switch cabinet temperature and humidity real-time control method based on edge model predictive control, which is applied to the switch cabinet detection technical field. Through the perception layer, the switch cabinet operation environment data is controlled and analyzed in place through the collection terminal in the switch cabinet. The network layer connects the switch cabinet state to big data or cloud through wireless or wired devices. The data layer realizes regional autonomy through terminal edge computing. The application layer realizes different monitoring and analysis according to different states through the terminal. The high-voltage switch cabinet temperature and humidity prediction and real-time control system based on edge computing is provided, which realizes offline calculation in the cloud and online calculation on the edge device in the switch cabinet. Efficient parallel processing of data and control model is realized, and data analysis and processing are quickly completed, realizing accurate prediction of the high-voltage switch cabinet operation environment and real-time control of temperature and humidity.

[0005] The design of the above patent is very complicated, poor in practicability, and not suitable for a single electrical cabinet or a small number of electrical cabinets. Moreover, the patent does not disclose a specific humidity control structure, and it is difficult to achieve real-time control of the humidity inside the electrical cabinet only through the technical solution disclosed by the patent. Therefore, it is a challenging and important task to research an efficient, practical and widely applicable electrical cabinet humidity real-time control device and method. Utility model content

[0006] The utility model discloses an electrical cabinet humidity real-time control device, which aims at improving the deficiencies of the prior art in real-time control of the humidity inside the electrical cabinet.

[0007] The utility model is realized in this way:

[0008] An electrical cabinet humidity real-time control device, comprising an electrical cabinet, further comprising:

[0009] A controller;

[0010] A humidity sensor, electrically connected to the controller, for detecting the air humidity inside the electrical cabinet;

[0011] An ion membrane dehumidifier, installed on the cabinet wall of the electrical cabinet; the ion membrane dehumidifier comprises an ion membrane, a first electrode and a second electrode, the first electrode and the second electrode are located inside and outside the electrical cabinet respectively; the ion membrane dehumidifier is electrically connected to the controller, and the controller is used for controlling the first electrode and the second electrode of the ion membrane dehumidifier to convert between cathode and anode, and one of the first electrode and the second electrode is an anode, and the other is a cathode.

[0012] Further, the controller is further electrically connected to a stirring fan, the stirring fan is arranged in the electrical cabinet, and the stirring fan is used for stirring the air inside the electrical cabinet.

[0013] Further, the controller is further electrically connected to a temperature sensor, and the temperature sensor is used for detecting the air temperature inside the electrical cabinet.

[0014] Further, a heat exchanger is arranged in the electrical cabinet, the heat exchanger has a refrigerant inlet end and a refrigerant outlet end, the heat exchanger is connected to a refrigerant conveying system, and the refrigerant conveying system is electrically connected to the controller.

[0015] Further, the stirring fan is arranged at the bottom of the electrical cabinet, a mounting rack is arranged near the bottom of the electrical cabinet, the mounting rack is located above the stirring fan, and the heat exchanger is horizontally arranged on the mounting rack.

[0016] Further, at least one stirring fan is arranged directly below the heat exchanger, and the stirring fan blows air upward, and an air flow diffusion element is arranged between the stirring fan and the heat exchanger, and the air flow diffusion element is used for diffusing the exhaust air of the stirring fan and increasing the contact range of the exhaust air of the stirring fan with the heat exchanger.

[0017] Further, the air flow diffusion element comprises a diffusion cover and at least two layers of air flow cutting screens arranged horizontally in the diffusion cover, and each air flow cutting screen is arranged in sequence in the upward direction; the upper end and the lower end of the diffusion cover are both open, and the cross-sectional area of the diffusion cover gradually increases from the lower end to the upper end, and the lower end of the diffusion cover is aligned with the exhaust port of the upper end of the stirring fan, and the upper end is aligned with the heat exchanger.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] 1、The utility model discloses a real -time control device for the humidity of electrical cabinet, including the electrical cabinet, the ion membrane dehumidifier of the inside of electrical cabinet, the humidity sensor of the inside of electrical cabinet, the humidity sensor is connected with the ion membrane dehumidifier, and the humidity sensor is connected with the humidity sensor.

[0020] 2、The utility model discloses a real -time control device for the humidity of electrical cabinet, including the electrical cabinet, the ion membrane dehumidifier of the inside of electrical cabinet, the humidity sensor of the inside of electrical cabinet, the humidity sensor is connected with the ion membrane dehumidifier, and the humidity sensor is connected with the humidity sensor. ACCURACY

[0021] Figure 1 It is the structural schematic diagram of the real -time control device for the humidity of electrical cabinet provided by the utility model embodiment 1;

[0022] Figure 2 It is the electric control structure block diagram of the real -time control device for the humidity of electrical cabinet provided by the utility model embodiment 1;

[0023] Figure 3 It is the flow chart of the real -time control method for the humidity of electrical cabinet provided by the utility model embodiment 2;

[0024] Figure 4 It is the structural schematic diagram of the real -time control device for the humidity of electrical cabinet provided by the utility model embodiment 3;

[0025] Figure 5 It is the electric control structure block diagram of the real -time control device for the humidity of electrical cabinet provided by the utility model embodiment 3;

[0026] Figure 6 It is the flow chart of the real -time control method for the humidity of electrical cabinet provided by the utility model embodiment 4;

[0027] Figure 7 Figure 5 is a structural schematic diagram of the real-time humidity control device of the electrical cabinet provided in the embodiment 5 of the present application.

[0028] In the figure: 1, electrical cabinet; 2, controller; 3, humidity sensor; 4, ion membrane dehumidifier; 5, stirring fan; 6, heat exchanger; 61, refrigerant inlet end; 62, refrigerant outlet end; 7, temperature sensor; 8, mounting bracket; 9, air flow diffusion element. DETAILED DESCRIPTION

[0029] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] The following will be further described in combination with the drawings and specific embodiments:

[0031] Embodiment 1

[0032] As shown in Figure 1 and Figure 2 , the present embodiment provides a real-time humidity control device of an electrical cabinet, which comprises an electrical cabinet 1, a controller 2, a humidity sensor 3 and an ion membrane dehumidifier 4. The humidity sensor 3 and the ion membrane dehumidifier 4 are electrically connected to the controller 2. The humidity sensor 3 is used to detect the air humidity inside the electrical cabinet 1 and transmit the detection value to the controller 2. The ion membrane dehumidifier 4 is installed on the cabinet wall of the electrical cabinet 1. The ion membrane dehumidifier 4 comprises an ion membrane, a first electrode and a second electrode. The first electrode and the second electrode are located inside and outside the electrical cabinet 1 respectively. The controller 2 can control the first electrode and the second electrode of the ion membrane dehumidifier 4 to switch between cathode and anode. One of the first electrode and the second electrode is an anode and the other is a cathode. The anode is the dehumidification side of the ion membrane dehumidifier 4. The water in the air is decomposed into hydrogen ions and oxygen. The cathode is the humidification side of the ion membrane dehumidifier 4. The hydrogen ions and the oxygen in the air react through the ion membrane to form water, which is gaseous water.

[0033] Embodiment 2

[0034] The present embodiment provides a real-time humidity control method of an electrical cabinet, which uses the real-time humidity control device of the electrical cabinet provided in the embodiment 1 to control the humidity inside the electrical cabinet 1 in real time.

[0035] As shown in Figure 3As shown, comprising the following steps:

[0036] S10, the controller 2 reads the humidity detection value H of the humidity sensor 3, and the humidity detection value H is the relative humidity.

[0037] S20, the controller 2 compares the humidity detection value H of the humidity sensor 3 with the set humidity threshold, and the humidity threshold includes a first humidity threshold H1 and a second humidity threshold H2, the first humidity threshold H1 is 40%, and the second humidity threshold H2 is 60%.

[0038] S30, the controller 2 executes the following control according to the comparison result:

[0039] S31, when H≤H1, the controller 2 controls the ion membrane dehumidifier 4 to run, and controls the first electrode of the ion membrane dehumidifier 4 to be the cathode and the second electrode of the ion membrane dehumidifier 4 to be the anode. At this time, the humidity value in the electrical cabinet 1 is low, and it is easy to cause the problem of static accumulation due to too low humidity. Therefore, the first electrode of the ion membrane dehumidifier 4 in the electrical cabinet 1 is controlled to be the cathode, and the cathode is the humidity releasing side, so as to improve the humidity in the electrical cabinet 1.

[0040] S32, when H1<H<H2, the ion membrane dehumidifier 4 is not started.

[0041] S33, when H2≤H, the controller 2 controls the ion membrane dehumidifier 4 to run, and controls the first electrode of the ion membrane dehumidifier 4 to be the anode and the second electrode of the ion membrane dehumidifier 4 to be the cathode. At this time, the humidity value in the electrical cabinet 1 is high, so the first electrode of the ion membrane dehumidifier 4 in the electrical cabinet 1 is controlled to be the anode, and the anode is the dehumidification side, so as to reduce the humidity in the electrical cabinet 1.

[0042] Example 3

[0043] As Figure 4 and Figure 5As shown, the embodiment provides a kind of electrical cabinet humidity real-time control device, including electrical cabinet 1, controller 2, humidity sensor 3, ion membrane dehumidifier 4, stirring fan 5, heat exchanger 6 and temperature sensor 7, humidity sensor 3, ion membrane dehumidifier 4, stirring fan 5 and temperature sensor 7 are electrically connected with controller 2.Humidity sensor 3 is used to detect the air humidity in the inside of electrical cabinet 1, and the detection value is passed to controller 2.Temperature sensor 7 is used to detect the air temperature in the inside of electrical cabinet 1, and the detection value is passed to controller 2.Stirring fan 5 is arranged in electrical cabinet 1, and stirring fan 5 is used to agitate the air in the inside of electrical cabinet 1, so that the humidity and temperature distribution in the inside of electrical cabinet 1 are uniform, to make the detection result of humidity sensor 3 and temperature sensor 7 more accurate.Heat exchanger 6 is arranged in electrical cabinet 1, and heat exchanger 6 has refrigerant inlet end 61 and refrigerant outlet end 62, and heat exchanger 6 is connected with refrigerant conveying system, and refrigerant conveying system is electrically connected with controller 2.Refrigerant conveying system can use cold water conveying system, which includes water pump, water tank, refrigerating machine and pipeline, and refrigerating machine is used to cool the circulating water in water tank, and water pump is used to convey the water in water tank to heat exchanger 6 through refrigerant inlet end 61, and the water conveyed to heat exchanger 6 will be returned to water tank through refrigerant outlet end 62 and pipeline.

[0044] As shown in Figure 4 Ion membrane dehumidifier 4 is installed on the cabinet wall of electrical cabinet 1, and ion membrane dehumidifier 4 includes ion membrane, first electrode and second electrode, and the first electrode and the second electrode are located inside and outside of electrical cabinet 1 respectively.Controller 2 can control the first electrode and the second electrode of ion membrane dehumidifier 4 to convert between cathode and anode, and one of the first electrode and the second electrode is anode, and the other is cathode.Anode is the dehumidification side of ion membrane dehumidifier 4, and water in air is decomposed into hydrogen ion and oxygen, and cathode is the humidification side of ion membrane dehumidifier 4, and hydrogen ion and oxygen in air are reacted to form water, and the water is gaseous water.

[0045] Embodiment 4

[0046] The embodiment provides a kind of electrical cabinet humidity real-time control method, and the humidity of inside electrical cabinet 1 is controlled in real time using the electrical cabinet humidity real-time control device provided in embodiment 3.

[0047] As shown in Figure 3 It includes the following steps:

[0048] S100, controller 2 reads humidity detection value H of humidity sensor 3, and reads temperature detection value C of temperature sensor 7, wherein humidity detection value H is relative humidity.

[0049] S200, the controller 2 compares the humidity detection value H of the humidity sensor 3 with the set humidity threshold value, and compares the temperature detection value C of the temperature sensor 7 with the set humidity threshold value C0. The humidity threshold value includes a first humidity threshold value H1 and a second humidity threshold value H2, the first humidity threshold value H1 is 40%, the second humidity threshold value H2 is 60%, and the humidity threshold value C0 is 40 DEG C.

[0050] S300, the controller 2 performs the following control according to the comparison result:

[0051] S310, when H≤H1, the controller 2 controls the ion membrane dehumidifier 4 and the control stirring fan 5 to run, and controls the first electrode of the ion membrane dehumidifier 4 to be cathode and the second electrode of the ion membrane dehumidifier 4 to be anode. At this time, the humidity value in the electrical cabinet 1 is low, and the problem of static electricity accumulation caused by too low humidity is prone to occur. Therefore, the first electrode of the ion membrane dehumidifier 4 in the electrical cabinet 1 is controlled to be cathode, and the cathode is the wet side, so that the humidity in the electrical cabinet 1 can be improved.

[0052] S320, when H1

[0053] S330, when H2≤H, the controller 2 controls the ion membrane dehumidifier 4 and the control stirring fan 5 to run, and controls the first electrode of the ion membrane dehumidifier 4 to be anode and the second electrode of the ion membrane dehumidifier 4 to be cathode. At this time, the humidity value in the electrical cabinet 1 is high, so the first electrode of the ion membrane dehumidifier 4 in the electrical cabinet 1 is controlled to be anode, and the anode is the dehumidification side, so that the humidity in the electrical cabinet 1 can be reduced.

[0054] S340, when C

[0055] S350, when C0≤C, the controller 2 sends a signal to the refrigerant conveying system, and the refrigerant conveying system conveys refrigerant into the heat exchanger 6 to reduce the temperature in the electrical cabinet 1. At the same time, the controller 2 controls the stirring fan 5 to run.

[0056] In summary, the utility model can detect the humidity value in the electrical cabinet 1 in real time, and when the humidity value in the electrical cabinet 1 is not in the set reasonable range, the polarity of the two electrodes of the ion membrane dehumidifier 4 can be changed to realize humidification and dehumidification, so that the humidity in the electrical cabinet 1 can be adjusted to the set reasonable range, which can effectively ensure the normal use and safety of the electrical cabinet 1, and effectively prolong the service life of the electrical cabinet 1. The utility model adjusts the humidity in the electrical cabinet 1 through the ion membrane dehumidifier 4, only needs to add 3V voltage on the electrode of the ion membrane dehumidifier 4 to work, which is not only low in energy consumption, but also has no vibration and no liquid water, and is safe to use.

[0057] Embodiment 5

[0058] As Figure 7 shown, the embodiment has the following differences compared with Embodiment 2:

[0059] In the embodiment, the stirring fan 5 is arranged at the bottom of the electrical cabinet 1, and the mounting rack 8 is arranged at the bottom of the electrical cabinet 1, the mounting rack 8 is above the stirring fan 5, and the heat exchanger 6 is horizontally arranged on the mounting rack 8. The stirring fan 5 is arranged in multiple, such as 2, 3, 4, etc., but at least one stirring fan 5 is arranged below the heat exchanger 6, and the stirring fan 5 blows upward, and the airflow diffusion element 9 is arranged between the stirring fan 5 and the heat exchanger 6. The airflow diffusion element 9 includes a diffusion cover and at least two layers of airflow cutting screens horizontally arranged in the diffusion cover, and each airflow cutting screen is arranged in sequence in the up-down direction. The upper end and the lower end of the diffusion cover are both open, and the cross-sectional area of the diffusion cover gradually increases from bottom to top, the lower end of the diffusion cover is aligned with the air outlet of the upper end of the stirring fan 5, and the upper end is aligned with the heat exchanger 6. The airflow diffusion element 9 is used to diffuse the exhaust air of the stirring fan 5, increase the contact range of the exhaust air of the stirring fan 5 and the heat exchanger 6, effectively improve the heat exchange effect between the refrigerant flowing in the heat exchanger 6 and the exhaust air of the stirring fan 5, and effectively improve the use efficiency of the heat exchanger 6.

[0060] The preferred embodiments of the utility model are only used for limiting the utility model, and the utility model can have various changes and changes for the technical personnel in the art, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A real-time control device for humidity of an electrical cabinet, comprising an electrical cabinet (1), characterized in that, Also include: Controller (2); Humidity sensor (3), electrically connected with the controller (2), for detecting the air humidity inside the electrical cabinet (1); Ion membrane dehumidifier (4) is installed on the cabinet wall of the electrical cabinet (1); the ion membrane dehumidifier (4) includes an ion membrane, a first electrode and a second electrode, the first electrode and the second electrode are located inside and outside of the electrical cabinet (1) respectively; the ion membrane dehumidifier (4) is electrically connected with the controller (2), and the controller (2) is used for controlling the first electrode and the second electrode of the ion membrane dehumidifier (4) to convert between cathode and anode, and one of the first electrode and the second electrode is anode, and the other is cathode.

2. The real-time humidity control device for electrical cabinet according to claim 1, characterized in that, The controller (2) is also electrically connected with the stirring fan (5), the stirring fan (5) is arranged in the electrical cabinet (1), and the stirring fan (5) is used for stirring the air inside the electrical cabinet (1).

3. The real-time control device for humidity of an electrical cabinet according to claim 2, characterized in that, The controller (2) is also electrically connected with the temperature sensor (7), and the temperature sensor (7) is used for detecting the air temperature inside the electrical cabinet (1).

4. The real-time control device for humidity of an electrical cabinet according to claim 3, characterized in that, The electrical cabinet (1) is provided with a heat exchanger (6), the heat exchanger (6) has a refrigerant inlet end (61) and a refrigerant outlet end (62), the heat exchanger (6) is connected with a refrigerant conveying system, and the refrigerant conveying system is electrically connected with the controller (2).

5. The real-time control device for humidity of an electrical cabinet according to claim 4, characterized in that, The stirring fan (5) is arranged at the bottom of the electrical cabinet (1), the mounting rack (8) is arranged near the bottom of the electrical cabinet (1), the mounting rack (8) is located above the stirring fan (5), and the heat exchanger (6) is horizontally arranged on the mounting rack (8).

6. The real-time control device for humidity of an electrical cabinet according to claim 5, characterized in that, At least one stirring fan (5) is arranged below the heat exchanger (6), and the stirring fan (5) blows air upward, an air flow diffusion element (9) is arranged between the stirring fan (5) and the heat exchanger (6), and the air flow diffusion element (9) is used for diffusing the exhaust air of the stirring fan (5) and increasing the contact range of the exhaust air of the stirring fan (5) and the heat exchanger (6).

7. The real-time control device for humidity of an electrical cabinet according to claim 6, characterized in that, The air flow diffusion element (9) includes a diffusion cover and at least two layers of air flow cutting screens arranged horizontally in the diffusion cover, and each air flow cutting screen is arranged in sequence in the upward direction; the upper end and the lower end of the diffusion cover are both open, the cross-sectional area of the diffusion cover gradually increases from bottom to top, the lower port of the diffusion cover is aligned with the exhaust port of the upper end of the stirring fan (5), and the upper port is aligned with the heat exchanger (6).

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