A high and low voltage switch cabinet with overload protection function

Abstract

The present invention relates to the technical field of switch cabinets, and in particular to a high and low voltage switch cabinet with an overload protection function. It comprises: a protective shell, the protective shell is provided with an intelligent control panel, a heat dissipation device is installed in the protective shell, a plurality of cabinets are installed in the protective shell, and a circuit breaker is arranged on the cabinet; a first movable plate, which has a plurality of plates, all of which are slidably connected to the protective shell, a plurality of second movable plates are slidably connected in the protective shell, and the first movable plate is located between the adjacent second movable plates and the protective shell; a first exhaust fan is installed in the protective shell; a first extraction fan is installed inside the fixed pipe. Through the joint action of the first extraction fan and the first exhaust fan, the present invention switches the gas in the static state in the protective shell to the flowing state when the heat dissipation device in the protective shell fails, and performs emergency heat dissipation treatment on the inside of the protective shell to ensure the normal use of various electrical components on the cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinets, and in particular to a high- and low-voltage switch cabinet with an overload protection function. Background Art

[0002] As key equipment in the power supply system, high and low voltage switchgear is usually composed of a cabinet and internal electrical components, including switches, fuses, circuit breakers, etc. It is widely used in industrial, commercial and residential fields to distribute electricity, control circuits and protect power equipment from damage due to faults.

[0003] When high and low voltage switchgear is used in outdoor environment, the switchgear is usually placed in a special protective cover to prevent external environmental factors such as dust, moisture, animal invasion, etc. from damaging the switchgear. At the same time, multiple switchgears can be integrated to simplify wiring and maintenance work to ensure the normal use of electrical components in the switchgear. At present, air conditioning systems are usually installed in special protective covers to control the internal temperature to ensure that the electrical components in the switchgear will not be damaged or degraded due to overheating. When the air conditioning system in the special protective cover shuts down due to a fault, it will cause the loss of its internal cooling function, causing the temperature in the special protective cover to start to rise. As the temperature rises, the operating temperature of the electrical components will exceed their rated range, resulting in performance degradation, shortened life, or even permanent damage. Summary of the invention

[0004] In order to overcome the shortcomings of the current protective shell during use, the present invention provides a high and low voltage switch cabinet with an overload protection function.

[0005] The technical implementation scheme of the present invention is: a high and low voltage switch cabinet with overload protection function, comprising:

[0006] A protective shell, wherein the protective shell is provided with an intelligent control panel, a heat dissipation device is installed in the protective shell, a plurality of cabinets are installed in the protective shell, and a circuit breaker is provided on the cabinet;

[0007] There are multiple first movable plates, all of which are slidably connected to the protective shell, and a plurality of second movable plates are slidably connected in the protective shell, the first movable plate is located between the adjacent second movable plate and the protective shell, and a movable module and a displacement module are provided on the protective shell, the movable module is used to drive all the first movable plates to move, and the displacement module is used to drive all the second movable plates to move;

[0008] a first exhaust fan installed on the protective shell, the protective shell being fixedly connected with a fixed pipe, the first exhaust fan and the fixed pipe respectively passing through the protective shell, the adjacent first movable plate and the adjacent second movable plate;

[0009] The first exhaust fan is installed inside the fixed pipe.

[0010] More preferably, the protective shell and all the first movable plates together form a first air storage cavity, all the second movable plates and all the first movable plates and the protective shell together form a second air storage cavity, and the first air storage cavity and the second air storage cavity on the protective shell are interconnected.

[0011] More preferably, it also includes:

[0012] A plurality of air suction pipes are provided, all of which are fixedly connected to the protective shell, and the air suction pipes are provided with a plurality of air inlets;

[0013] a second exhaust fan fixedly connected to the protective shell, the second exhaust fan being located below the fixed pipe, the second exhaust fan being connected to all the suction pipes through an air inlet pipe, the second exhaust fan passing through the adjacent second movable plate, and the second exhaust fan being connected to the first air storage chamber of the protective shell;

[0014] The second exhaust fan is fixedly connected to one of the first movable plates, and the first movable plate and the second movable plate are both provided with through holes. The second exhaust fan is connected to the first air storage cavity and the second air storage cavity on the protective shell through the through holes on the first movable plate and the second movable plate.

[0015] More preferably, it also includes:

[0016] An insect catching component is arranged on one side of the fixed tube, and is used to catch mosquitoes in the external environment. The insect catching component includes:

[0017] A connecting frame, fixedly connected to the first exhaust fan;

[0018] The guide shell has a plurality of guide shells that are symmetrically distributed along the center and are all fixedly connected to the connecting frame in a through-type manner. A connecting ring is fixedly connected to one end of the guide shell away from the connecting frame. The connecting ring is detachably connected to an insect catching shell. The insect catching shell is connected to the adjacent guide shell. A through hole connected to the fixed pipe is provided on one side of the insect catching shell close to the first exhaust fan.

[0019] More preferably, the flow area of ​​the guide shell on the side close to the insect catching shell is smaller than the flow area of ​​the guide shell on the side away from the insect catching shell.

[0020] More preferably, the number of wind gathering shells is the same as the number of the guide shells, which are respectively fixed to the inside of adjacent guide shells, and the guide shells are fixed with intercepting shells.

[0021] More preferably, the flow area of ​​the wind gathering shell and the intercepting shell on the side close to the connecting frame is larger than the flow area on the side away from the connecting frame.

[0022] More preferably, the minimum flow area of ​​the intercepting shell is greater than the minimum flow area of ​​the wind gathering shell.

[0023] More preferably, it also includes:

[0024] A fixed shell, fixedly connected to the protective shell, the fixed shell is slidably connected to the adjacent first movable plate and the adjacent second movable plate, the fixed shell is fixedly connected to the fixed tube, and the fixed tube is provided with a plurality of exhaust holes communicated with the fixed shell, and the exhaust holes and the fixed tube together form a storage cavity;

[0025] A first electromagnetic three-way valve, disposed on the fixed pipe;

[0026] The first connecting pipe is installed on the first electromagnetic three-way valve, and the first connecting pipe is fixedly connected to and communicated with the fixed shell.

[0027] More preferably, it also includes:

[0028] A second electromagnetic three-way valve, disposed on the fixed pipe;

[0029] The second connecting pipe is installed on the second electromagnetic three-way valve, the second connecting pipe is fixedly connected to the second movable plate, and the second connecting pipe is communicated with both the first air storage cavity and the second air storage cavity on the protective shell.

[0030] Compared with the prior art, the present invention has the following advantages: through the joint action of the first exhaust fan and the first exhaust fan, when the heat dissipation device in the protective shell fails, the gas in the static state in the protective shell is switched to a flowing state, and emergency heat dissipation treatment is performed on the inside of the protective shell to ensure the normal use of various electrical components on the cabinet.

[0031] The mosquitoes mixed in the gas are captured and guided by the guide shell during its rotation, so that the mosquitoes in the guide shell move along the guide shell to the adjacent insect-catching shell, thereby preventing the mosquitoes from entering the protective shell and affecting the normal operation of the electrical components in the cabinet.

[0032] The flow path of the gas inside the adjacent guide shell is limited by the wind gathering shell and the adjacent intercepting shell, and the mosquitoes mixed in the gas are intercepted by the intercepting shell, further reducing the probability of mosquitoes entering the protective shell, thereby ensuring the normal use of various electrical components in the cabinet.

[0033] When the external humidity is high, the first electromagnetic three-way valve switches the connection position of the fixed pipe, so that the gas entering the delivery pipe flows into the fixed shell, and the desiccant in the storage cavity of the fixed shell absorbs the moisture contained in the gas, reducing the water content of the gas flowing into the protective shell, thereby avoiding the overall environment in the protective shell from being too humid and ensuring the normal operation of various electrical components in the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the three-dimensional structure of the protective shell and the first movable plate of the present invention;

[0036] Figure 3 It is a schematic diagram of the three-dimensional structure of the first movable plate and the second movable plate of the present invention;

[0037] Figure 4 It is a three-dimensional structural schematic diagram of the positional relationship between the first row of fans and the fixed pipe of the present invention;

[0038] Figure 5 It is a three-dimensional structural schematic diagram of the positional relationship between the fixed pipe and the second exhaust fan of the present invention;

[0039] Figure 6 It is a three-dimensional structural cross-sectional view of the fixed shell of the present invention;

[0040] Figure 7 is a three-dimensional structural cross-sectional view of the fixed tube of the present invention;

[0041] Figure 8 It is a schematic diagram of the three-dimensional structure of the guide shell and the connecting ring of the present invention;

[0042] Fig. 9 It is a three-dimensional structural cross-sectional view of the connecting frame and the guide shell of the present invention;

[0043] Fig.10 It is a three-dimensional structural cross-sectional view of the guide shell of the present invention;

[0044] Fig.11 It is a cross-sectional view of the three-dimensional structure of the wind gathering shell and the intercepting shell of the present invention.

[0045] Among them, the above-mentioned drawings include the following figure marks: 1. protective shell, 2. cabinet, 4. first movable plate, 5. second movable plate, 6. first exhaust fan, 7. fixed pipe, 8. first exhaust fan, 9. suction pipe, 10. second exhaust fan, 11. second exhaust fan, 13. connecting frame, 14. guide shell, 15. connecting ring, 16. insect catching shell, 17. wind gathering shell, 18. intercepting shell, 20. fixed shell, 21. exhaust hole, 22. first electromagnetic three-way valve, 23. first connecting pipe, 24. second electromagnetic three-way valve, 25. second connecting pipe. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] A high and low voltage switchgear with overload protection function, such as Figure 1-Figure 7 As shown, it includes a protective shell 1, the protective shell 1 is provided with an intelligent control panel, a heat dissipation device is installed in the protective shell 1, a plurality of cabinets 2 are installed in the protective shell 1, and a circuit breaker is arranged on the cabinet 2; a first movable plate 4, which has a plurality of parts, is slidably connected to the protective shell 1, a plurality of second movable plates 5 are slidably connected in the protective shell 1, the first movable plate 4 is located between the adjacent second movable plates 5 and the protective shell 1, a movable module and a displacement module are arranged on the protective shell 1, the movable module is used to drive all the first movable plates 4 to move, and the displacement module is used to drive all the second movable plates 5 to move; a first exhaust fan 6 is installed on one side of the protective shell 1 side, and the first exhaust fan 6 passes through the protective shell 1, the adjacent first movable plate 4 and the adjacent second movable plate 5; the fixed pipe 7 is fixedly connected to the side of the protective shell 1 where the first exhaust fan 6 is not installed, and the fixed pipe 7 passes through the protective shell 1, the adjacent first movable plate 4 and the adjacent second movable plate 5; the first exhaust fan 8 is installed inside the fixed pipe 7, and is used to draw the external gas into the protective shell 1. The protective shell 1 and all the first movable plates 4 jointly form a first air storage cavity, all the second movable plates 5 and all the first movable plates 4 and the protective shell 1 jointly form a second air storage cavity, and the first air storage cavity and the second air storage cavity on the protective shell 1 are connected to each other.

[0048] In the above scheme, it is intended to solve the problem of emergency heat dissipation of the heat generated by the cabinet 2 when a failure occurs in the heat dissipation device in the existing protective shell 1, so as to ensure the normal operation of the electrical components on the cabinet 2, specifically as follows: a sealed door is installed on the front side of the protective shell 1, so that the protective shell 1 can form a closed chamber; the intelligent control panel on the protective shell 1 is used to monitor the temperature inside the protective shell 1 as well as the temperature and humidity in the external environment in real time, and to control the opening and closing of the moving module, the displacement module, the first exhaust fan 6, the first extraction fan 8, the second extraction fan 10, the second exhaust fan 11, the first electromagnetic three-way valve 22 and the second electromagnetic three-way valve 24; the heat dissipation device in the protective shell 1 is an air conditioner; the specific number of cabinets 2 can be selected by the staff, and two are shown in the figure as an example; the circuit breaker on the cabinet 2 is an existing device, which is not shown in the figure, and is used to cut off the cabinet 2 when the load is too large. The circuit of the cabinet 2; the first movable plate 4 and the second movable plate 5 are represented by three as an example in the figure and the text, and the three first movable plates 4 and the three second movable plates 5 are respectively located on the left, rear and right sides of the protective shell 1; the moving module and the displacement module are existing devices, and the figure takes the electric push rod as an example to show them, and the working principles of the moving module and the displacement module are not described in detail; initially, the first air storage chamber and the second air storage chamber on the protective shell 1 both store gas, which is used to increase the heat insulation effect of the protective shell 1; the first exhaust fan 6 is used to extract the hot air in the protective shell 1 to the outside, the first exhaust fan 6 is located on the right side of the protective shell 1, the fixed pipe 7 is located on the left side of the protective shell 1, and the first exhaust fan 8 is used to draw the gas in the external environment into the protective shell 1 to increase the air circulation speed in the protective shell 1. In actual use, the specific number of the first exhaust fan 6, the fixed pipe 7 and the first exhaust fan 8 can be set to multiple.

[0049] Further, such as Figure 4 and Figure 5 As shown, it also includes: a plurality of suction pipes 9, all of which are fixedly connected to the protective shell 1, and the suction pipes 9 are provided with a plurality of air inlets; a second exhaust fan 10, fixedly connected to the protective shell 1, the second exhaust fan 10 is located below the fixed pipe 7, the second exhaust fan 10 is connected to all the suction pipes 9 through the air inlet pipe, the second exhaust fan 10 passes through the adjacent second movable plate 5, and the second exhaust fan 10 is connected to the first air storage cavity of the protective shell 1; a second exhaust fan 11, fixedly connected to one of the first movable plates 4, and the first movable plate 4 and the second movable plate 5 are both provided with through holes, the second exhaust fan 11 is connected to the first air storage cavity and the second air storage cavity on the protective shell 1 through the through holes on the first movable plate 4 and the second movable plate 5.

[0050] In the above scheme, two suction pipes 9 are used as an example in the figure and the text, and the specific number of suction pipes 9 can be selected by the staff when in use; the second exhaust fan 10 is used to transport the hot air generated by the cabinet 2 to the first air storage cavity on the protective shell 1; the second exhaust fan 11 is used to transport the gas in the first air storage cavity and the second air storage cavity on the protective shell 1 to the protective shell 1.

[0051] The specific workflow of the above scheme is as follows:

[0052] During normal use of the device, the air conditioner in the protective shell 1 dissipates the heat generated by the cabinet 2, thereby ensuring the normal operation of the electrical components in the cabinet 2. When the air conditioner in the protective shell 1 fails, the temperature in the protective shell 1 rises rapidly. After the intelligent control panel on the protective shell 1 detects that the temperature in the protective shell 1 rises to a specified value, the specific working processes of the parts in the protective shell 1 in summer and winter are described separately as follows. In summer:

[0053] The intelligent control panel on the protective shell 1 starts the first exhaust fan 8, the first exhaust fan 6, the second exhaust fan 11 (the first exhaust fan 8, the first exhaust fan 6 and the second exhaust fan 11 are all connected to an external power source) as well as the moving module and the displacement module, and the moving module and the displacement module respectively control the three first moving plates 4 and the three second moving plates 5 to move synchronously in a direction away from the center of the protective shell 1.

[0054] When the three first movable plates 4 are respectively fitted with the adjacent side walls of the protective shell 1, the intelligent control panel on the protective shell 1 shuts down the moving module. After the three second movable plates 5 are respectively fitted with the adjacent first movable plates 4, the intelligent control panel on the protective shell 1 shuts down the displacement module to fix the first movable plate 4 and the second movable plate 5 in the moved position. At this time, the protective shell 1, the first movable plate 4, and the second movable plate 5 are fitted in pairs to increase the heat exchange efficiency between the internal gas of the protective shell 1 and the external gas. Then the intelligent control panel on the protective shell 1 shuts down the second exhaust fan 11. At this time, the first exhaust fan 8 draws the gas in the external environment into the protective shell 1, and the first exhaust fan 6 draws the gas in the protective shell 1 into the external environment, switches the static gas in the protective shell 1 to flowing gas, and the flowing gas brings the heat generated by the cabinet 2 to the outside of the protective shell 1, performs emergency heat dissipation treatment in the protective shell 1 to ensure the normal use of the electrical components on the cabinet 2, and the staff promptly inspects the air conditioner in the protective shell 1. After the inspection is completed, the staff restarts the air conditioner and shuts down the above parts for subsequent continued use.

[0055] In winter, the external environment temperature is low, and it is not suitable to directly draw the gas in the external environment into the protective shell 1 to dissipate heat for the cabinet 2 (to avoid the temperature shock causing the thermal stress of the electrical components in the cabinet 2 to increase, affecting its mechanical properties and service life), and the overall temperature in the protective shell 1 is lower than that in summer. When the air conditioner in the protective shell 1 fails, the intelligent control panel on the protective shell 1 operates as described above, moves the three second movable plates 5 to positions respectively fitted with the adjacent first movable plates 4 (the first movable plates 4 are stationary at this time), and starts the second exhaust fan 10 and the second exhaust fan 11. The second exhaust fan 10 transports the hot air inside the protective shell 1 to the first air storage cavity on the protective shell 1, and the second exhaust fan 11 transports the gas in the first air storage cavity on the protective shell 1 to the protective shell 1, so that the gas exchanges heat with the external environment through the side wall of the protective shell 1, reduces the temperature of the gas transported to the first air storage cavity on the protective shell 1, and circulates the gas in the first air storage cavity on the protective shell 1 and the protective shell 1, so as to perform emergency heat dissipation treatment in the protective shell 1.

[0056] During the above-mentioned internal circulation process, although the heat dissipation operation of the protective shell 1 can be achieved through the internal circulation of the gas, during actual use, the temperature of the gas circulating in the protective shell 1 may continue to rise. Therefore, during the internal circulation heat dissipation process, the intelligent control panel on the protective shell 1 can intermittently start the first exhaust fan 8, and then intermittently transport the gas in the external environment into the protective shell 1, further reducing the temperature in the protective shell 1, avoiding the situation where the temperature in the protective shell 1 slowly rises, and ensuring the normal use of various electrical components on the cabinet 2.

[0057] After the staff has finished inspecting the air conditioner in the protective shell 1, the staff restarts the air conditioner and shuts down the above-mentioned parts in preparation for subsequent use.

[0058] Furthermore, Figure 7-Figure 11 As shown, it also includes: an insect catching component, which is arranged on one side of the fixed tube 7, and is used to catch mosquitoes in the external environment. The insect catching component includes: a connecting frame 13, which is fixed to the first exhaust fan 8; a guide shell 14, which has a plurality of centrally symmetrically distributed ones, all of which are fixed to the connecting frame 13 in a through-type manner, and a connecting ring 15 is fixed to the end of the guide shell 14 away from the connecting frame 13, and the connecting ring 15 is detachably connected to an insect catching shell 16, and the insect catching shell 16 is connected to the adjacent guide shell 14, and a through hole connected to the fixed tube 7 is provided on the side of the insect catching shell 16 close to the first exhaust fan 8.

[0059] The above scheme aims to solve the problem that mosquitoes will enter the protective shell 1 when the outside air is extracted to dissipate heat inside the protective shell 1 in summer. The specific details are as follows: the specific number and position of the guide shells 14 can be selected by the staff, and the figure and the text both take two centrally symmetrically distributed as an example; the connecting ring 15 is located at the right end of the guide shell 14; a gauze net for catching mosquitoes can be set in the insect-catching shell 16, and the through hole on the insect-catching shell 16 is located on its right side.

[0060] Furthermore, Fig. 9 As shown, the flow area of ​​the guide shell 14 close to the insect-catching shell 16 is smaller than the flow area of ​​the guide shell 14 away from the insect-catching shell 16.

[0061] In the above solution, the shape of the guide shell 14 is limited so that the guide shell 14 is in the shape of an ox horn, which is used to guide the mosquitoes moving into the guide shell 14 and move the mosquitoes into the adjacent insect catching shell 16 .

[0062] During the rotation of the first exhaust fan 8, the first exhaust fan 8 drives the connecting frame 13 to rotate through the rotating shaft thereon, the connecting frame 13 drives the two guide shells 14 to rotate, and the guide shells 14 drive the adjacent insect catching shells 16 to rotate synchronously through the connecting rings 15 thereon.

[0063] During the rotation of the first exhaust fan 8, the gas in the external environment flows into the two guide shells 14, and flows into the fixed tube 7 through the through holes on the adjacent insect-catching shells 16. At the same time, the two guide shells 14 capture mosquitoes mixed in the airflow during the rotation process. At the same time, the guide shells 14 guide the mosquitoes captured therein, so that the mosquitoes in the guide shells 14 move along the guide shells 14 to the adjacent insect-catching shells 16 and are captured by the insect-catching shells 16, thereby preventing the mosquitoes from entering the protective shell 1 and affecting the normal operation of the electrical components in the cabinet 2.

[0064] After the above-mentioned staff completes the inspection of the air conditioner in the protective shell 1 , the staff cleans the insect catching shell 16 to prevent too many mosquitoes from being stored in the insect catching shell 16 , causing the mosquitoes to flow back into the adjacent guide shell 14 .

[0065] At the same time, in order to further prevent mosquitoes from entering the protective shell 1, during actual use, the staff can set a filter in the fixed tube 7 to intercept mosquitoes.

[0066] Furthermore, Fig.10 and Fig.11 As shown, the insect catching assembly also includes: wind gathering shells 17, the number of which is the same as the number of guide shells 14, which are respectively fixed to the inside of adjacent guide shells 14, and an interception shell 18 is fixed inside the guide shell 14. The interception shell 18 is located on the side of the wind gathering shell 17 away from the connecting frame 13.

[0067] In the above scheme, the wind gathering shell 17 and the adjacent intercepting shell 18 jointly define the path of gas flow in the adjacent guide shell 14, so that the gas entering the guide shell 14 flows along the wind gathering shell 17 and the intercepting shell 18 therein.

[0068] Furthermore, Fig.10 and Fig.11 As shown, the flow area of ​​the wind gathering shell 17 and the intercepting shell 18 close to the connecting frame 13 is larger than the flow area on the side away from the connecting frame 13, and the minimum flow area of ​​the intercepting shell 18 is larger than the minimum flow area of ​​the wind gathering shell 17.

[0069] In the above solution, specific restrictions are made on the shapes of the wind gathering shell 17 and the intercepting shell 18 so that the flow rate of the gas is gradually increased when the gas flows through the wind gathering shell 17.

[0070] In the process of the first exhaust fan 8 extracting the external environment gas, the gas entering the guide shell 14 moves along the wind gathering shell 17, and is guided by the wind gathering shell 17 to gradually increase the flow speed of the gas. At the moment when the gas passes through the wind gathering shell 17, the flow speed of the gas reaches the fastest, thereby pushing the mosquitoes mixed in the gas into the insect catching shell 16. At the same time, the gas leaving the wind gathering shell 17 moves into the insect catching shell 16 due to the suction force of the first exhaust fan 8. In this process, the mosquitoes mixed in the gas are intercepted by the wind gathering shell 17 and the interception shell 18 together (the specific principle can be referred to the fishing cage), further reducing the probability of mosquitoes entering the protective shell 1, thereby ensuring the normal use of various electrical components in the cabinet 2.

[0071] Furthermore, Figure 5-Figure 7 As shown, it also includes: a fixed shell 20, fixedly connected to the protective shell 1, the fixed shell 20 is slidably connected to the adjacent first movable plate 4 and the adjacent second movable plate 5, the fixed shell 20 is fixedly connected to the fixed tube 7, and the fixed tube 7 is provided with a plurality of exhaust holes 21 connected to the fixed shell 20, and the exhaust holes 21 and the fixed tube 7 together form a storage cavity; a first electromagnetic three-way valve 22, arranged on the fixed tube 7.

[0072] In the above scheme, a desiccant (existing device, not shown in the figure) is stored in the storage cavity of the fixed shell 20, which is used to absorb moisture contained in the external air in a humid environment; the specific number of exhaust holes 21 can be specifically selected by the staff; the first electromagnetic three-way valve 22 divides the fixed pipe 7 into two left and right sections, and the first electromagnetic three-way valve 22 is initially connected to the fixed pipe 7.

[0073] During the process of the first exhaust fan 8 extracting outside air, when the intelligent control panel on the protective shell 1 detects that the outside humidity is high, the intelligent control panel on the protective shell 1 controls the first electromagnetic three-way valve 22, and the first electromagnetic three-way valve 22 connects the right section of the fixed pipe 7 with the first connecting pipe 23, and disconnects the left and right sections of the fixed pipe 7, so that the gas entering the fixed pipe 7 flows along the exhaust hole 21 into the fixed shell 20, and the desiccant in the storage cavity of the fixed shell 20 absorbs the moisture contained in the gas, reducing the water content of the gas flowing into the protective shell 1, thereby avoiding the overall environment in the protective shell 1 from being too humid, and ensuring the normal operation of each electrical component in the cabinet 2.

[0074] After the above-mentioned staff completes the inspection of the air conditioner in the protective shell 1, the staff resets the first electromagnetic three-way valve 22 to the initial state (that is, the first electromagnetic three-way valve 22 connects the left and right sections of the fixed pipe 7) for subsequent use.

[0075] Furthermore, Figure 5-Figure 7 As shown, it also includes: a second electromagnetic three-way valve 24, which is arranged on the fixed pipe 7; a second connecting pipe 25, which is installed on the second electromagnetic three-way valve 24, the second connecting pipe 25 is fixedly connected to the second movable plate 5, and the second connecting pipe 25 is connected to the first air storage chamber and the second air storage chamber on the protective shell 1.

[0076] In the above scheme, the second electromagnetic three-way valve 24 divides the right section of the fixed pipe 7 into two sections, left and right, that is, the first electromagnetic three-way valve 22 and the second electromagnetic three-way valve 24 divide the fixed pipe 7 into three sections, left, middle and right. The first electromagnetic three-way valve 22 is located between the left section and the middle section of the fixed pipe 7, and the second electromagnetic three-way valve 24 is located between the middle section and the right section of the fixed pipe 7. Initially, the second electromagnetic three-way valve 24 is connected to the fixed pipe 7. During the above internal circulation process, the intelligent control panel on the protective shell 1 controls the second electromagnetic three-way valve 24 to connect the middle section of the fixed pipe 7 with the second connecting pipe 25 (at this time, the first electromagnetic three-way valve 22 connects the left section and the middle section of the fixed pipe 7). The first exhaust fan 8 transports the gas in the external environment to the first air storage chamber on the protective shell 1, and the gas already in the first air storage chamber on the protective shell 1 preheats the gas extracted from the outside to avoid direct contact with the cabinet 2 when the temperature of the gas extracted from the outside is low, resulting in an increase in thermal stress of the electrical components inside the cabinet 2, affecting its mechanical properties and service life.

[0077] The above is only a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and its improved conception, which should be covered by the protection scope of the present application.

Claims

1. A high and low voltage switch cabinet with overload protection function, characterized in that: include: A protective shell (1), the protective shell (1) being provided with an intelligent control panel, a heat dissipation device being installed in the protective shell (1), a plurality of cabinets (2) being installed in the protective shell (1), and a circuit breaker being provided on the cabinet (2); A plurality of first movable plates (4) are provided, all of which are slidably connected to the protective shell (1); a plurality of second movable plates (5) are slidably connected inside the protective shell (1); the first movable plate (4) is located between the adjacent second movable plates (5) and the protective shell (1); a movable module and a displacement module are provided on the protective shell (1); the movable module is used to drive all of the first movable plates (4) to move; and the displacement module is used to drive all of the second movable plates (5) to move; a first exhaust fan (6) mounted on the protective shell (1); the protective shell (1) is fixedly connected to a fixed pipe (7); the first exhaust fan (6) and the fixed pipe (7) respectively pass through the protective shell (1), the adjacent first movable plate (4) and the adjacent second movable plate (5); A first exhaust fan (8) mounted inside the fixed tube (7); Also includes: A plurality of air suction pipes (9) are fixedly connected to the protective shell (1), and the air suction pipes (9) are provided with a plurality of air inlets; a second exhaust fan (10) fixedly connected to the protective shell (1), the second exhaust fan (10) being located below the fixed pipe (7), the second exhaust fan (10) being connected to all the suction pipes (9) via an air inlet pipe, the second exhaust fan (10) passing through the adjacent second movable plate (5), and the second exhaust fan (10) being connected to the first air storage chamber of the protective shell (1); A second exhaust fan (11) is fixedly connected to one of the first movable plates (4), and the first movable plate (4) and the second movable plate (5) are both provided with through holes, and the second exhaust fan (11) is connected to the first air storage cavity and the second air storage cavity on the protective shell (1) through the through holes on the first movable plate (4) and the second movable plate (5).

2. A high and low voltage switch cabinet with overload protection function according to claim 1, characterized in that: The protective shell (1) and all the first movable plates (4) together form a first air storage cavity, and all the second movable plates (5) and all the first movable plates (4) and the protective shell (1) together form a second air storage cavity, and the first air storage cavity and the second air storage cavity on the protective shell (1) are interconnected.

3. A high and low voltage switch cabinet with overload protection function according to claim 1, characterized in that include: An insect catching component is arranged on one side of the fixed tube (7), and is used to catch mosquitoes in the external environment. The insect catching component comprises: A connecting frame (13) fixedly connected to the first exhaust fan (8); The guide shell (14) has a plurality of guide shells which are centrally symmetrically distributed and are all fixedly connected to the connecting frame (13) in a through-type manner. A connecting ring (15) is fixedly connected to one end of the guide shell (14) away from the connecting frame (13). The connecting ring (15) is detachably connected to an insect catching shell (16). The insect catching shell (16) is connected to an adjacent guide shell (14). A through hole connected to the fixed pipe (7) is provided on a side of the insect catching shell (16) close to the first exhaust fan (8).

4. A high and low voltage switch cabinet with overload protection function according to claim 3, characterized in that: The flow area of ​​the guide shell (14) on a side close to the insect catching shell (16) is smaller than the flow area of ​​the guide shell (14) on a side away from the insect catching shell (16).

5. A high and low voltage switch cabinet with overload protection function according to claim 3, characterized in that: The insect catching component also includes: The number of wind gathering shells (17) is the same as the number of the guide shells (14), and they are respectively fixed to the inside of adjacent guide shells (14), and the guide shells (14) are fixed with interception shells (18) inside.

6. A high and low voltage switch cabinet with overload protection function according to claim 5, characterized in that: The flow area of ​​the wind gathering shell (17) and the intercepting shell (18) on the side close to the connecting frame (13) is larger than the flow area on the side away from the connecting frame (13).

7. A high and low voltage switch cabinet with overload protection function according to claim 6, characterized in that: The minimum flow area of ​​the intercepting shell (18) is greater than the minimum flow area of ​​the wind gathering shell (17).

8. A high and low voltage switch cabinet with overload protection function according to claim 3, characterized in that include: a fixed shell (20) fixedly connected to the protective shell (1), the fixed shell (20) being slidably connected to the adjacent first movable plate (4) and the adjacent second movable plate (5), the fixed shell (20) being fixedly connected to the fixed tube (7), and the fixed tube (7) being provided with a plurality of exhaust holes (21) in communication with the fixed shell (20), the exhaust holes (21) and the fixed tube (7) jointly forming a storage cavity; A first electromagnetic three-way valve (22), arranged on the fixed pipe (7); A first connecting pipe (23) is mounted on the first electromagnetic three-way valve (22), and the first connecting pipe (23) is fixedly connected to and communicates with the fixed shell (20).

9. A high and low voltage switch cabinet with overload protection function according to claim 8, characterized in that include: A second electromagnetic three-way valve (24), arranged on the fixed pipe (7); The second connecting pipe (25) is mounted on the second electromagnetic three-way valve (24); the second connecting pipe (25) is fixedly connected to the second movable plate (5); and the second connecting pipe (25) is in communication with both the first air storage cavity and the second air storage cavity on the protective shell (1).

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