Miniaturized low-voltage switchgear

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a miniaturized low-voltage switchgear, which comprises a bottom plate, a control switch fixedly mounted in the middle of the front end of the top wall of the bottom plate, and a control mainboard and a voltage transformation controller symmetrically and fixedly mounted in the middle of the top wall of the bottom plate. A low-voltage power supply port and a high-voltage power supply port are symmetrically and fixedly installed on the rear side of the top wall of the bottom plate, and the low-voltage power supply port is connected with the control mainboard through a connecting line. According to the utility model, the low-voltage power supply port and the high-voltage power supply port are arranged, the low-voltage power supply port and the high-voltage power supply port adopt independent power supply line design, the low-voltage power supply port is directly connected with the control mainboard, and the high-voltage power supply port is connected with the transformation controller and then is directly connected with the control mainboard through the transformation controller. A low-voltage power supply and a high-voltage power supply can be connected to the whole switch equipment, the low-voltage switch equipment works, and the actual power supply mode is not single.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a miniaturized low-voltage switchgear. Background Technique

[0002] Switchgear is a commonly used power electrical equipment in power, industrial production and residential areas. In a broad sense, it includes high and low voltage switch cabinets, circuit breakers, disconnectors, load switches, combined electrical appliances, electrical complete sets, etc. The external line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch, and each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage switch cabinets, with high-voltage busbars, such as power plants, etc. Some also have low-frequency load shedding to protect the main equipment.

[0003] The utility model with the publication number of CN202025987U in the prior art relates to a miniaturized mine-used low-voltage complete switchgear, including a cabinet frame connected by profiles with a semi-surrounding structure with an L-shaped cross-section. The profile is composed of an upper folding edge, a rear folding edge, a lower folding edge, a front folding edge, a side upper folding edge and a side lower folding edge; the profile is modularly provided with mounting holes; the cabinet frame is detachably fixed with upper and lower bottom plates, side plates and door plates serving as cabinet walls through the mounting holes, and the overall layout is compact, which can effectively reduce the space occupied by the switch cabinet and realize the miniaturization of the cabinet body on the basis of leaving enough space for incoming and outgoing lines and facilitating users to wire.

[0004] However, the above switchgear still has the following problems when in use: Since the low-voltage switchgear is a low-voltage switchgear, it can often only be connected to a low-voltage power supply, and the actual power supply method is single, and it cannot adapt to different power inputs. At the same time, after the switch control component is used for a long time, it only relies on passive heat dissipation methods, and it is very easy to cause heat accumulation, which will lead to overheating and damage of the switch control component. Content of the Utility Model

[0005] (I) Technical problems to be solved:

[0006] In view of the deficiencies of the prior art, the utility model provides a miniaturized low-voltage switchgear, which solves the problems put forward in the background technique.

[0007] (II) Technical solutions:

[0008] To achieve the above object, the utility model provides the following technical solution: a miniaturized low-voltage switchgear, including a bottom plate, a control switch is fixedly installed in the middle of the front end of the top wall of the bottom plate, a control main board and a voltage transformation controller are symmetrically and fixedly installed in the middle of the top wall of the bottom plate, a low-voltage power supply port and a high-voltage power supply port are symmetrically and fixedly installed at the rear side of the top wall of the bottom plate, the low-voltage power supply port is connected to the control main board through a connecting wire, the high-voltage power supply port is connected to the voltage transformation controller through a connecting wire, and the voltage transformation controller is connected to the control main board through a connecting wire.

[0009] As a further scheme of the utility model: a protection mechanism is fixedly installed on the top of the bottom plate through four screws, the protection mechanism includes a protection cover fixedly installed on the top of the bottom plate, an axial flow exhaust fan is arranged at the center of the top of the protection cover, a group of air inlet holes are respectively opened on the outer side walls at both ends of the protection cover, the two groups of air inlet holes are symmetrically arranged, one group of air inlet holes are multiple and are arranged at equal distances from front to back, an installation groove is opened at the center of the inner top wall of the protection cover, and the axial flow exhaust fan is fixedly installed in the installation groove.

[0010] As a further scheme of the utility model: through holes are opened at the four corners of the bottom plate, and threaded grooves are correspondingly opened at the four corners of the bottom of the protection cover at positions corresponding to the through holes, and the screws pass through the corresponding through holes, and the upper ends of the screws are threadedly connected to the threaded grooves.

[0011] As a further scheme of the utility model: two fixing frames are symmetrically and fixedly connected to the bottom wall of the bottom plate, the fixing frames are L-shaped frames, and an installation hole is opened in the middle of the bottom wall of the fixing frame.

[0012] As a further scheme of the utility model: a first matching groove is opened at the front end of the bottom wall of the protection cover corresponding to the control switch, two second matching grooves are opened at the rear end of the bottom wall of the protection cover corresponding to the low-voltage power supply port and the high-voltage power supply port, a low-voltage switch control chip, a voltage stabilizing chip and a wireless transmission chip are arranged on the top of the control main board, and the control main board is connected to the control switch through a connecting wire.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by providing a low-voltage power supply port and a high-voltage power supply port, the low-voltage power supply port and the high-voltage power supply port adopt an independent power supply line design. The low-voltage power supply port is directly connected to the control main board, the high-voltage power supply port is connected to the voltage transformation controller, and then directly connected to the control main board through the voltage transformation controller. The overall switchgear can be connected to a low-voltage power supply or a high-voltage power supply, and the low-voltage switchgear can work. The actual power supply method is not single.

[0015] 2. In the present utility model, an active heat dissipation mechanism is provided at the switch control component, that is, a protective cover is arranged outside the control main board and the voltage transformer controller. A plurality of air intake holes are opened at both ends of the protective cover. At the same time, an installation groove is opened at the top of the protective cover, and an axial flow exhaust fan is fixedly installed in the installation groove. Air can be taken in through the air intake holes on both sides and exhausted through the axial flow exhaust fan above to dissipate the heat of the control main board and the voltage transformer controller. After long-term use, heat accumulation is not likely to occur, thereby avoiding overheating damage to the switch control component. Brief Description of the Drawings

[0016] Figure 1 is the overall three-dimensional view of the present utility model Figure 1 ;

[0017] Figure 2 is the overall three-dimensional view of the present utility model Figure 2 ;

[0018] Figure 3 is the overall three-dimensional view of the present utility model without the cover;

[0019] Figure 4 is the three-dimensional view of the protective cover of the present utility model.

[0020] In the figure: 1, bottom plate; 2, control main board; 3, voltage transformer controller; 4, control switch; 5, high-voltage power supply port; 6, low-voltage power supply port; 7, fixing bracket; 8, protection mechanism; 9, axial flow exhaust fan; 10, installation hole; 11, screw; 81, protective cover; 82, first fitting groove; 83, second fitting groove; 84, installation groove; 85, air intake hole. Detailed Description of the Preferred Embodiment

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] It should be noted that the bottom plate 1 and the protective cover 81 are prior arts, and they are both housing components supporting small electrical switch devices, which are common knowledge in the technical field and will not be elaborated here.

[0023] Please refer to Figures 1 to 4, in the embodiment of the present utility model, a miniaturized low-voltage switchgear includes a bottom plate 1. In the middle of the front end of the top wall of the bottom plate 1, a control switch 4 is fixedly installed. In the middle of the top wall of the bottom plate 1, a control main board 2 and a voltage transformation controller 3 are symmetrically fixedly installed. On the rear side of the top wall of the bottom plate 1, a low-voltage power supply port 6 and a high-voltage power supply port 5 are symmetrically fixedly installed. The low-voltage power supply port 6 is connected to the control main board 2 through a connecting wire, the high-voltage power supply port 5 is connected to the voltage transformation controller 3 through a connecting wire, and the voltage transformation controller 3 is connected to the control main board 2 through a connecting wire. It is provided with a low-voltage power supply port 6 and a high-voltage power supply port 5, and the low-voltage power supply port 6 and the high-voltage power supply port 5 adopt an independent power supply line design. The low-voltage power supply port 6 is directly connected to the control main board 2, the high-voltage power supply port 5 is connected to the voltage transformation controller 3, and then directly connected to the control main board 2 via the voltage transformation controller 3. The overall switchgear can be connected to a low-voltage power supply or a high-voltage power supply, and the low-voltage switchgear can work. The actual power supply method is not single.

[0024] Four screws 11 are used to fixedly install a protection mechanism 8 on the top of the bottom plate 1. The protection mechanism 8 includes a protective cover 81 fixedly installed on the top of the bottom plate 1. At the center position of the top of the protective cover 81, an axial flow exhaust fan 9 is provided. On the outer side walls at both ends of the protective cover 81, a set of air intake holes 85 are respectively opened. The two sets of air intake holes 85 are symmetrically arranged. One set of air intake holes 85 is multiple and arranged at equal distances from front to back. At the center position of the inner top wall of the protective cover 81, an installation groove 84 is opened. The axial flow exhaust fan 9 is fixedly installed in the installation groove 84. Its switch control component is provided with an active heat dissipation mechanism, that is, a protective cover 81 is arranged outside the control main board 2 and the voltage transformation controller 3. A plurality of air intake holes 85 are opened at both ends of the protective cover 81. At the same time, an installation groove 84 is opened at the top of the protective cover 81, and an axial flow exhaust fan 9 is fixedly installed in the installation groove 84. Air can be taken in through the air intake holes 85 on both sides and exhausted through the axial flow exhaust fan 9 above to dissipate the heat of the control main board 2 and the voltage transformation controller 3. After long-term use, it is not easy to cause heat accumulation, thereby avoiding overheating damage of the switch control component.

[0025] Through holes are opened at the four corners of the bottom plate 1, and threaded grooves corresponding to the through holes are opened at the four corners of the bottom of the protective cover 81. The screws 11 pass through the corresponding through holes, and the upper ends of the screws 11 are threadedly connected to the threaded grooves. The four screws 11 can be unscrewed to disassemble the bottom plate 1 and the protective cover 81.

[0026] Two fixing brackets 7 are symmetrically fixedly connected to the bottom wall of the bottom plate 1. The fixing brackets 7 are L-shaped brackets, and an installation hole 10 is opened in the middle of the bottom wall of the fixing brackets 7. The overall switchgear can be fixedly installed on the corresponding work station through the installation holes 10 of the two fixing brackets 7 in cooperation with installation bolts.

[0027] At the front end of the bottom wall of the protective cover 81, a first mating groove 82 is provided corresponding to the control switch 4. At the rear end of the bottom wall of the protective cover 81, two second mating grooves 83 are provided corresponding to the low-voltage power supply port 6 and the high-voltage power supply port 5. On the top of the control main board 2, a low-voltage switch control chip, a voltage stabilizing chip and a wireless transmission chip are provided. The control main board 2 is connected to the control switch 4 through a connecting wire, and can be wirelessly connected to the electrical equipment to be controlled through the wireless transmission chip of the control main board 2. At this time, low-voltage switch control can be performed on it through the control switch 4.

[0028] The working principle of the present utility model is as follows: It is provided with a low-voltage power supply port 6 and a high-voltage power supply port 5. The low-voltage power supply port 6 and the high-voltage power supply port 5 adopt an independent power supply line design. The low-voltage power supply port 6 is directly connected to the control main board 2, and the high-voltage power supply port 5 is connected to the voltage conversion controller 3, and then directly connected to the control main board 2 through the voltage conversion controller 3. The overall switch device can be connected to a low-voltage power supply or a high-voltage power supply, and the low-voltage switch device can work. The actual power supply method is not single. The control main board 2 can be wirelessly connected to the electrical equipment to be controlled through the wireless transmission chip. At this time, low-voltage switch control can be performed on it through the control switch 4. In addition, an active heat dissipation mechanism is provided at the switch control component, that is, a protective cover 81 is provided outside the control main board 2 and the voltage conversion controller 3. A plurality of air intake holes 85 are provided at both ends of the protective cover 81. At the same time, an installation groove 84 is provided at the top of the protective cover 81, and an axial flow exhaust fan 9 is fixedly installed in the installation groove 84. Air can be taken in through the air intake holes 85 on both sides, and exhausted by the axial flow exhaust fan 9 above, to dissipate the heat of the control main board 2 and the voltage conversion controller 3. After long-term use, it is not easy to cause heat accumulation, thereby avoiding overheating damage of the switch control component.

[0029] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A miniaturized low-voltage switchgear, comprising a bottom plate (1), and a control switch (4) is fixedly installed in the middle of the front end of the top wall of the bottom plate (1); It is characterized in that: A protection mechanism (8) is fixedly installed on the top of the bottom plate (1) by four screws (11). A control main board (2) and a voltage transformation controller (3) are symmetrically and fixedly installed in the middle of the top wall of the bottom plate (1). A low-voltage power supply port (6) and a high-voltage power supply port (5) are symmetrically and fixedly installed at the rear side of the top wall of the bottom plate (1); The low-voltage power supply port (6) is connected to the control main board (2) through a connecting wire. The high-voltage power supply port (5) is connected to the voltage transformation controller (3) through a connecting wire. The voltage transformation controller (3) is connected to the control main board (2) through a connecting wire; The protection mechanism (8) includes a protective cover (81) fixedly installed on the top of the bottom plate (1). An axial flow exhaust fan (9) is arranged at the center of the top of the protective cover (81). A set of air intake holes (85) are opened on the outer side walls of both ends of the protective cover (81).

2. The miniaturized low-voltage switchgear according to claim 1, characterized in that: Through holes are opened at the four corners of the bottom plate (1). Threaded grooves are opened at the four corners of the bottom of the protective cover (81) corresponding to the through holes. The screws (11) pass through the corresponding through holes, and the upper ends of the screws (11) are threadedly connected into the threaded grooves.

3. A miniaturized low-voltage switchgear according to claim 1, characterized in that: Two fixing brackets (7) are symmetrically and fixedly connected to the bottom wall of the bottom plate (1).

4. A miniaturized low-voltage switchgear according to claim 3, characterized in that: The fixing bracket (7) is an L-shaped bracket, and an installation hole (10) is opened in the middle of the bottom wall of the fixing bracket (7).

5. A miniaturized low-voltage switchgear according to claim 1, characterized in that: The two sets of air intake holes (85) are symmetrically arranged. One set of air intake holes (85) are multiple and are arranged at equal distances from front to back. An installation groove (84) is opened at the center of the inner top wall of the protective cover (81). The axial flow exhaust fan (9) is fixedly installed in the installation groove (84).

6. A miniaturized low-voltage switchgear according to claim 1, characterized in that: A first fitting groove (82) is opened at the front end of the bottom wall of the protective cover (81) corresponding to the control switch (4). Two second fitting grooves (83) are opened at the rear end of the bottom wall of the protective cover (81) corresponding to the low-voltage power supply port (6) and the high-voltage power supply port (5).

7. A miniaturized low-voltage switchgear according to claim 1, characterized in that: A low-voltage switch control chip, a voltage stabilizing chip and a wireless transmission chip are arranged on the top of the control main board (2). The control main board (2) is connected to the control switch (4) through a connecting wire.

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