Harmonic wave treatment cabinet

Abstract

The utility model provides a harmonic suppression cabinet, which comprises a cabinet body, and an active power filter, an air switch and terminal assembly, a current transformer, an electric reactor and a fan which are respectively arranged in the cabinet body, an air inlet and the fan are respectively arranged on two opposite side walls of the cabinet body; the active power filter is arranged above the air switch and terminal assembly to form a first parallel assembly; the current transformer is arranged above the reactor to form a second parallel assembly; the first parallel assembly is arranged on the side close to the air inlet, the second parallel assembly is arranged on the side close to the fan, and the cabinet body is provided with an openable cabinet door at the position corresponding to the first parallel assembly. The harmonic suppression cabinet provided by the utility model is reasonable in internal component layout, compact in structure, small in overall size and convenient to maintain.

Description

Technical Field

[0001] The present application relates to the technical field of power filter devices, and in particular to a harmonic control cabinet. Background Art

[0002] In recent years, with the widespread use of power engineering electronic products, the harmonic pollution of the power grid has become more and more serious. Various common faults and accidents caused by harmonics continue to occur, and harmonic damage has attracted more and more attention. When nonlinear loads are working, a large amount of harmonic current will be generated and injected into the power grid, causing voltage distortion. Therefore, it is necessary to adopt a harmonic control plan to ensure the reliability of power supply, reduce harmonic interference, improve product quality, and extend equipment life.

[0003] In the process of implementing this application, the inventors found that there are at least the following problems in the prior art:

[0004] Most existing filter devices have unreasonable component layout, which leads to low cabinet space utilization, large overall size and large footprint. At the same time, the unreasonable layout of the filter device is also reflected in the inconvenience of internal components maintenance, poor operating environment stability, and low safety and reliability of device operation. Summary of the invention

[0005] Based on this, the present application provides a harmonic control cabinet to improve the problems existing in the prior art such as the unreasonable component layout resulting in a large overall volume and inconvenient maintenance of internal components.

[0006] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] An embodiment of the present application provides a harmonic control cabinet, comprising a cabinet body, and an active power filter, a circuit breaker and a terminal assembly, a current transformer, a reactor, and a fan respectively arranged in the cabinet body; an air inlet and the fan are respectively arranged on two opposite side walls of the cabinet body; the active power filter is arranged above the circuit breaker and the terminal assembly to form a first parallel assembly; the current transformer is arranged above the reactor to form a second parallel assembly; the first parallel assembly is arranged on a side close to the air inlet, the second parallel assembly is arranged on a side close to the fan, and the cabinet body is provided with an openable cabinet door at a corresponding position of the first parallel assembly.

[0008] In one embodiment, the cabinet further includes a cabinet body and a maintenance plate; the cabinet body is in the shape of a box with a rectangular cross-section and an open end, and the cabinet body includes an upper top plate, a lower bottom plate, a back plate opposite to the open end, and two oppositely arranged side plates; the cabinet door is arranged at the opening corresponding to the cabinet body and the first parallel component, the maintenance plate is arranged at the opening corresponding to the cabinet body and the second parallel component, and the maintenance plate is detachably connected to the cabinet body.

[0009] In one of the embodiments, one of the side panels is provided with the air inlet, and the other one is provided with the fan; the number of the fans is two, and the two fans are arranged vertically and side by side on the side panel, and each of the fans is provided with the corresponding air inlet.

[0010] In one embodiment, a first wire inlet and outlet is provided on the bottom plate, a second wire inlet and outlet is provided on the lower portion of the side plate near the first wire inlet and outlet, and a third wire inlet and outlet is provided on the top plate.

[0011] In one of the embodiments, a first extension portion is respectively provided at both ends of the top plate, the first extension portion extends outward from the connection between the top plate and the side plate, and a first mounting hole is respectively provided on the two first extension portions; a second extension portion is respectively provided at both ends of the bottom plate, the second extension portion extends outward from the connection between the bottom plate and the side plate, and a second mounting hole is respectively provided on the two second extension portions.

[0012] In one of the embodiments, third extension parts are respectively provided at both ends of the back plate, and the third extension parts extend outward from the junction of the back plate and the side plate, and third mounting holes are respectively provided on the two third extension parts.

[0013] In one of the embodiments, a first protective plate is provided on a side of the active power filter facing the cabinet door.

[0014] In one of the embodiments, a second protective plate is provided on a side of the reactor facing the first parallel component.

[0015] In one of the embodiments, the second protective plate is provided with ventilation holes.

[0016] In one of the embodiments, the harmonic control cabinet also includes a fixed base plate, the reactor is fixed on the fixed base plate, and the fixed base plate is movably connected to the cabinet body for driving the reactor to move outside the cabinet body to facilitate maintenance of the reactor.

[0017] The present application has at least the following beneficial effects: the harmonic control cabinet provided by the embodiment of the present application includes a first parallel component, the first parallel component sets the active power filter above the circuit breaker and the terminal component, and an openable cabinet door is provided on the cabinet body corresponding to the first parallel component, so as to facilitate the maintenance of the first parallel component. At the same time, the circuit breaker and the terminal component are arranged at the inner lower part of the cabinet body, so as to facilitate the operation thereof during maintenance, and at the same time, it is also convenient for wiring and outlet. The harmonic control cabinet of the embodiment of the present application also includes a second parallel component, the current transformer of the second parallel component is arranged above the reactor, and is arranged corresponding to the active power filter, so as to facilitate the line connection between the two, and the reactor is arranged below the current transformer, so as to facilitate the maintenance operation thereof. At the same time, the cabinet door is only arranged on one side of the first parallel component, and the openable cabinet door is not provided on the side of the second parallel component which does not need to be maintained frequently, so as to improve the safety and reliability of the harmonic control cabinet, and avoid the danger caused by the operator or other irrelevant personnel accidentally touching the cabinet body, or affect the normal use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the harmonic control cabinet of an embodiment of the present application (cabinet door is open).

[0019] Figure 2 This is a schematic diagram of the internal structure of the harmonic control cabinet from one perspective of an embodiment of the present application (without the first protective plate).

[0020] Figure 3 This is a schematic diagram of the internal structure of the harmonic control cabinet from another perspective of an embodiment of the present application.

[0021] Figure 4 This is a schematic diagram of the structure of the harmonic control cabinets in an embodiment of the present application when they are stacked.

[0022] The meanings of the symbols in the accompanying drawings are as follows:

[0023] 1. Cabinet; 11. Cabinet body; 111. Top plate; 1111. Third inlet and outlet; 1112. First extension; 1113. First mounting hole; 112. Bottom plate; 1121. Second extension; 1122. Second mounting hole; 1123. First inlet and outlet; 113. Side plate; 1131. Air inlet; 1132. Handle; 1133. Second inlet and outlet; 114. Back plate; 1141. Third extension; 1142. Third mounting hole; 115. Open end; 12. Cabinet door; 13. Maintenance panel; 3. Reactor; 31. Second protective plate; 32. Fixed bottom plate; 4. Active power filter; 41. First protective plate; 2. Circuit breaker and terminal assembly; 5. Current transformer; 6. Fan. DETAILED DESCRIPTION

[0024] The technical solution of the present application will be further elaborated in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application in this specification are only for the purpose of describing specific embodiments and are not intended to limit the implementation of this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0027] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0028] The harmonic governance cabinet of the embodiment of this application is mainly used for harmonic governance of room-level air conditioners. However, the harmonic governance cabinet of the embodiment of this application is not limited to the above application scenarios and can also be used in other scenarios that require harmonic governance. The layout of the harmonic governance cabinet of the embodiment of this application mainly considers meeting the installation requirements of each device within the limited space size, making full use of the space, and reasonably arranging each device so that it is convenient for maintenance, servicing, etc. At the same time, it is also necessary to consider the stable, safe, and reliable operating environment of each device.

[0029] Such as Figure 1 and Figure 2As shown in the figure, the harmonic control cabinet of the embodiment of the present application includes a cabinet body 1, and an active power filter 4, a circuit breaker and terminal assembly 2, a current transformer 5, a reactor 3, and a fan 6 respectively arranged in the cabinet body 1; air inlets 1131 and a fan 6 are respectively arranged on two opposite side walls of the cabinet body 1; the active power filter 4 is arranged above the circuit breaker and terminal assembly 2 to form a first parallel assembly; the current transformer 5 is arranged above the reactor 3 to form a second parallel assembly; the first parallel assembly is arranged on the side close to the air inlet 1131, the second parallel assembly is arranged on the side close to the fan 6, and a door 12 that can be opened is arranged on the cabinet body 1 corresponding to the first parallel assembly.

[0030] Specifically, as Figure 2 and Figure 3 shown, in this embodiment, the cabinet body 1 includes a cabinet main body 11, a door 12, and a maintenance board 13. The cabinet main body 11 is a box body with a rectangular cross-section (a cuboid box body) and has an open end 115. The cabinet main body 11 includes a top plate 111 above, a bottom plate 112 below, a back plate 114 opposite to the open end 115, and two opposite side plates 113. The door 12 is arranged at the opening of the cabinet main body 11 corresponding to the first parallel assembly, the maintenance board 13 is arranged at the opening of the cabinet main body 11 corresponding to the second parallel assembly, and the maintenance board 13 is detachably connected to the cabinet main body 11. In this embodiment, the door 12 and the maintenance board 13 jointly close the open end 115 of the cabinet main body 11. The door 12 is hinged to the cabinet main body 11, and the hinged side of the door 12 is arranged away from the maintenance board 13. The maintenance board 13 is fixedly connected to the cabinet main body 11 and is a detachable connection method, such as being connected by bolts and other connecting parts. This connection method not only ensures the safety of the harmonic control cabinet, avoiding the operator from accidentally touching and affecting the normal use of the harmonic control cabinet or causing dangerous accidents due to accidental touch. At the same time, when the internal reactor 3 needs to be maintained, it can also be quickly maintained by disassembling the maintenance board 13. Setting the hinge point of the door 12 on the side away from the maintenance board 13 can completely open the open end 115 of the cabinet main body 11 after the door 12 is opened and the maintenance board 13 is disassembled, facilitating the maintenance of the inside of the cabinet body 1. The connection method design of the door 12 and the maintenance board 13 in this embodiment not only meets the requirements of safety regulations but also ensures the structural strength of the overall framework.

[0031] One of the two side plates 113 of the cabinet body 11 is provided with an air inlet 1131, and the other is provided with a fan 6. To enhance the heat dissipation effect of the harmonic suppression cabinet, multiple fans 6 can be provided. For example, in this embodiment, the number of fans 6 is two, and the two fans 6 are arranged side by side vertically on the side plate 113. Each fan 6 is correspondingly provided with an air inlet 1131, that is, the position of the air outlet matches the height range of the fan 6, and the structure of the air outlet can adopt a structure similar to a shutter. To further enhance the heat dissipation effect, a high-air-volume fan 6 can also be selected to increase the air circulation speed inside the cabinet body 1, so that the internal components of the harmonic suppression cabinet are in a reliable operating environment.

[0032] A first wire inlet / outlet 1123 is provided on the bottom plate 112 of the cabinet body 11, a second wire inlet / outlet 1133 is provided at the lower part of the side plate 113 near the first wire inlet / outlet 1123, and a third wire inlet / outlet 1111 is provided on the top plate 111. Specifically, in this embodiment, the first wire inlet / outlet 1123 is provided below the air switch and terminal assembly 2, the third wire inlet / outlet 1111 is provided above the active power filter 4, and the second wire inlet / outlet 1133 is provided at the lower part of the side plate 113 near the first parallel assembly. The first wire inlet / outlet 1123 and the second wire inlet / outlet 1133 are used for the harmonic suppression cabinet to enter and exit wires from the bottom or side, and the third wire inlet / outlet 1111 at the top is used for wiring for adjacent harmonic suppression cabinets when multiple harmonic suppression cabinets are stacked.

[0033] Both ends of the top plate 111 of the cabinet body 11 are respectively provided with a first extension part 1112. The first extension parts 1112 respectively extend outward from the joints of the top plate 111 and the side plates 113, and first mounting holes 1113 are respectively provided on the two first extension parts 1112; both ends of the bottom plate 112 are respectively provided with a second extension part 1121. The second extension parts 1121 respectively extend outward from the joints of the bottom plate 112 and the side plates 113, and second mounting holes 1122 are respectively provided on the two second extension parts 1121. Specifically, the first extension part 1112 and the top plate 111 are coplanar, and can be integrally formed or fixedly connected by welding or other means. The second extension part 1121 and the bottom plate 112 are coplanar, and can also be integrally formed or fixedly connected in the same way. Two or more second mounting holes 1122 can be respectively provided on the two second extension parts 1121. The second mounting holes 1122 can be used to fix the harmonic suppression cabinet on the ground or other horizontal surfaces. When two harmonic suppression cabinets are stacked up and down, the first mounting holes 1113 of the harmonic suppression cabinet located below can cooperate with the second mounting holes 1122 of the harmonic suppression cabinet located above to fixedly connect the two harmonic suppression cabinets.

[0034] The two ends of the back plate 114 of the cabinet body 11 are respectively provided with a third extension part 1141, and the third extension part 1141 extends outward from the junction of the back plate 114 and the side plate 113, and the two third extension parts 1141 are respectively provided with a third mounting hole 1142. Specifically, the two third extension parts 1141 are coplanar with the back plate 114, and can be integrally formed or fixedly connected. More than two third mounting holes 1142 can be respectively provided on the two third extension parts 1141, and the third mounting holes 1142 can be used to install the harmonic control cabinet on the wall to achieve wall-mounted installation.

[0035] In order to improve the safety of the harmonic control cabinet, a first protective plate 41 can be set in front of the active power filter 4 (on the side close to the cabinet door 12). The first protective plate 41 completely blocks the front of the active power filter 4 to prevent the operator from accidentally touching the active power filter 4 when opening the cabinet door 12.

[0036] A second protective plate 31 may also be provided on the side of the reactor 3, and the second protective plate 31 completely shields the side of the reactor 3 (the side close to the first parallel component) to prevent accidental touch. At the same time, a plurality of ventilation holes (not shown) may be provided on the second protective plate 31 to form a mesh structure to facilitate heat dissipation of the reactor 3.

[0037] In order to further improve the convenience of maintenance, a fixed bottom plate 32 may be provided below the reactor 3, and the reactor 3 may be fixed on the fixed bottom plate 32. The fixed bottom plate 32 is movably connected to the cabinet 1, and is used to drive the reactor 3 to move outside the cabinet 1, so as to facilitate maintenance of the reactor 3. For example, a slide rail assembly may be provided on the fixed bottom plate 32 and the bottom plate 112 of the cabinet body 11, respectively, and the fixed bottom plate 32 may be pulled outward to slide out of the cabinet body 11 along the guide direction of the slide rail assembly; or a guide rail or guide groove may be provided on the bottom plate 112 of the cabinet body 11, and a roller may be provided at the bottom of the fixed bottom plate 32, and the roller may be moved out of the cabinet body 11 along the guide direction of the guide rail or guide groove.

[0038] To facilitate the transportation of the harmonic control cabinet, handles 1132 may be respectively provided at the middle of the two side panels 113 of the cabinet body 11 .

[0039] The harmonic control cabinet of the embodiment of the present application is an installation cabinet that performs harmonic control and adjustment under the requirements of room-level air-conditioning applications. It fully utilizes the space, optimizes the distribution of various components, reduces manufacturing and maintenance costs, and meets the user's installation requirements.

[0040] The harmonic control cabinet of the embodiment of the present application is relatively small in size and can meet the installation requirements of many scenarios. At the same time, the harmonic control cabinet of the embodiment of the present application can also realize modular stacking installation, single module flat installation, and single module wall-mounted installation requirements. The installation method is flexible and diverse, and can maximize the use of space. The harmonic control cabinet of the embodiment of the present application adopts a single-door form, and a cabinet door lock can be set to facilitate the maintenance and operation requirements of various components in the cabinet while ensuring safety regulations. Figure 4 As shown, the harmonic control cabinet can be installed in pairs. If there is a greater demand for harmonic control, they can be placed in parallel to reduce the floor space.

[0041] The harmonic control cabinet of the embodiment of the present application has a reasonable layout, convenient assembly and maintenance. Its internal components are reasonably arranged, occupying a small space, fully reducing the cost of the sheet metal frame, and facilitating later maintenance with low cost.

[0042] The harmonic control cabinet of the embodiment of the present application has a reasonable layout, fully considering the operating requirements of each component, fully exerting its performance while reducing the loss of each component, and providing protection design for internal components, thereby improving the safety and reliability of the harmonic control cabinet.

[0043] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0044] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A harmonic control cabinet, characterized in that: It comprises a cabinet, and an active power filter, a circuit breaker and a terminal assembly, a current transformer, a reactor, and a fan respectively arranged in the cabinet; an air inlet and the fan are respectively arranged on two opposite side walls of the cabinet; the active power filter is arranged above the circuit breaker and the terminal assembly to form a first parallel assembly; the current transformer is arranged above the reactor to form a second parallel assembly; the first parallel assembly is arranged on a side close to the air inlet, the second parallel assembly is arranged on a side close to the fan, and the cabinet is provided with an openable cabinet door at a position corresponding to the first parallel assembly.

2. The harmonic control cabinet according to claim 1, characterized in that: The cabinet also includes a cabinet body and a maintenance plate; the cabinet body is in the shape of a box with a rectangular cross-section and an open end, and the cabinet body includes a top plate at the top, a bottom plate at the bottom, a back plate opposite to the open end, and two oppositely arranged side plates; the cabinet door is arranged at the opening corresponding to the cabinet body and the first parallel component, the maintenance plate is arranged at the opening corresponding to the cabinet body and the second parallel component, and the maintenance plate is detachably connected to the cabinet body.

3. The harmonic control cabinet according to claim 2, characterized in that: One of the side panels is provided with the air inlet, and the other one is provided with the fan; the number of the fans is two, and the two fans are arranged vertically and side by side on the side panel, and each of the fans is provided with the air inlet accordingly.

4. The harmonic control cabinet according to claim 2, characterized in that: The bottom plate is provided with a first wire inlet and outlet, the lower part of the side plate close to the first wire inlet and outlet is provided with a second wire inlet and outlet, and the top plate is provided with a third wire inlet and outlet.

5. The harmonic control cabinet according to claim 2, characterized in that: The top plate is provided with a first extension portion at both ends, the first extension portion extends outward from the connection between the top plate and the side plate, and the two first extension portions are provided with a first mounting hole; the bottom plate is provided with a second extension portion at both ends, the second extension portion extends outward from the connection between the bottom plate and the side plate, and the two second extension portions are provided with a second mounting hole.

6. The harmonic control cabinet according to claim 2, characterized in that: The two ends of the back plate are respectively provided with third extension parts, and the third extension parts extend outward from the connection between the back plate and the side plate, and the two third extension parts are respectively provided with third mounting holes.

7. The harmonic control cabinet according to claim 1, characterized in that: A first protective plate is provided on a side of the active power filter facing the cabinet door.

8. The harmonic control cabinet according to claim 1, characterized in that: A second protective plate is provided on a side of the reactor facing the first parallel component.

9. The harmonic control cabinet according to claim 8, characterized in that: The second protective plate is provided with ventilation holes.

10. The harmonic control cabinet according to claim 1, characterized in that: It also includes a fixed bottom plate, the reactor is fixed on the fixed bottom plate, and the fixed bottom plate is movably connected to the cabinet body and is used to drive the reactor to move outside the cabinet body to facilitate maintenance of the reactor.

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