Electric energy quality on-line monitoring device

Abstract

The utility model discloses an electric energy quality on-line monitoring device comprising a main housing, one side of the main housing is provided with a wiring board, one side of the main housing far away from the wiring board is provided with a door plate, one side of the main housing is provided with an opening, and the main housing is internally provided with an installation structure. A limiting assembly is arranged on the side, close to the mounting structure, of the main shell, the mounting structure comprises a sliding rail fixedly connected with the inner wall of the main shell, and an inner frame assembly used for mounting elements is slidably connected to the sliding rail. According to the utility model, through the arrangement of the installation structure, when a user needs to replace and maintain the on-line monitoring device, the installation structure can be slid to the outside of the main shell, so that a larger operation space is obtained, the user can conveniently maintain and replace elements, and in the normal use process, the installation structure is convenient to use. The limiting assembly can be used for fixing the mounting structure, the main shell is matched with the L-shaped plate to protect the element, and the practical requirements of users are met.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy monitoring equipment, in particular to an on-line electric energy quality monitoring device. Background Art

[0002] With the increasing attention of people to new energy power generation, a large number of distributed generation systems are connected to the distribution network. During the operation of a distributed photovoltaic grid-connected power generation system, harmonic and DC components will be injected into the distribution network, and the harm and influence on the safe operation of the distribution network and the normal operation of electrical equipment are increasing continuously, resulting in increasingly prominent problems of the quality of the distribution network. Electric energy quality monitoring mainly monitors voltage deviation, frequency deviation, whether the voltage and current are balanced (referring to the fact that the power frequency phase voltage (current) of a three-phase system is different in amplitude or the phase difference is not 120°), as well as voltage fluctuation and flicker, etc., to ensure that the electric energy quality meets the user's requirements.

[0003] In the prior art, an on-line electric energy quality monitoring device needs to integrate a large number of functional components, communication modules, and devices such as a CPU, and install various components in a housing. Once some components need to be replaced and maintained, the maintenance and replacement operations are inconvenient and time-consuming. Moreover, during the replacement and maintenance period, power-off or power consumption without monitoring may even be required, which poses certain safety hazards. Therefore, we propose an on-line electric energy quality monitoring device to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and propose an on-line electric energy quality monitoring device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An on-line electric energy quality monitoring device, including a main housing, a wiring board is arranged on one side of the main housing, and a door panel is arranged on the side of the main housing away from the wiring board. An opening is arranged on one side of the main housing, and an installation structure is arranged inside the main housing. A limiting component is arranged on the side of the main housing close to the installation structure;

[0007] The installation structure includes a slide rail fixedly connected to the inner wall of the main housing. An inner frame assembly for installing components is slidably connected to the slide rail. An L-shaped plate is fixedly connected to one side of the inner frame assembly. The wiring board is arranged on the L-shaped plate. A connecting plate is fixedly connected to the side wall of the L-shaped plate away from the back plate. The limiting component is clamped with the connecting plate.

[0008] Preferably, the inner frame assembly includes a frame body. A transverse plate is fixedly connected inside the frame body, and a plurality of shaft rods are rotatably connected inside the frame body. A wire passing hole is arranged on the shaft rod, and a mounting plate for installing components is fixedly connected to the shaft rod.

[0009] Preferably, the limiting component includes a limiting plate, a through hole is formed in the limiting plate, a limiting rod is slidably connected in the through hole, a blind hole matching the limiting rod is formed in the connecting plate, a connecting rod is slidably connected to the door panel, and the limiting rod is rotatably connected to the connecting rod.

[0010] Preferably, a circuit assembly is arranged on one side of the frame body close to the door panel, and a control panel is arranged on the door panel.

[0011] Preferably, a compression spring is fixedly connected to the side wall of the door panel, and the compression spring abuts against the connecting rod.

[0012] Preferably, the shaft rod is rotatably connected to the frame body through a damping rotating shaft.

[0013] Preferably, a limiting card is fixedly connected to the inner wall of the inner housing, and a side strip matching the limiting card is fixedly connected to the mounting plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. In the utility model, by arranging the installation structure, when the user needs to replace and maintain the line monitoring device, the installation structure can be slid to the outside of the main housing, so as to obtain a larger operation space, which is convenient for the user to repair and replace the components. During normal use, the limiting component can be used to fix the installation structure, and the main housing and the L-shaped plate are used to protect the components, meeting the actual needs of the user;

[0016] 2. In the utility model, by arranging the inner frame component and adopting the shaft rod and the wire passing hole, after the installation structure is slid to the outside of the main housing, the user can adjust the mounting plate on the inner frame component, thus avoiding the interference of the relatively dense components on the user's repair and replacement operations, and at the same time not affecting the electrical connection between multiple components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an on-line power quality monitoring device proposed by the utility model;

[0018] Figure 2 is a schematic diagram of the storage state structure of an on-line power quality monitoring device proposed by the utility model;

[0019] Figure 3 is a schematic diagram of the unfolded state structure of an on-line power quality monitoring device proposed by the utility model;

[0020] Figure 4 is a schematic diagram of the side sectional structure of an on-line power quality monitoring device proposed by the utility model;

[0021] Figure 5 The front sectional structure diagram of an on-line power quality monitoring device proposed by the present utility model;

[0022] Figure 6 is Figure 5 The enlarged structure diagram at position A in

[0023] Figure 7 The shaft rod structure diagram of an on-line power quality monitoring device proposed by the present utility model.

[0024] In the figure: 1, main housing; 2, wiring board; 3, door panel; 4, slide rail; 5, L-shaped plate; 6, connecting plate; 7, frame body; 8, cross plate; 9, shaft rod; 10, wire passing hole; 11, limiting plate; 12, limiting rod; 13, blind hole; 14, connecting rod; 15, control panel; 16, line assembly; 17, compression spring; 18, limiting card; 19, side strip. Specific embodiments

[0025] 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.

[0026] Refer to Figures 1 - 7 , an on-line power quality monitoring device, including a main housing 1, a wiring board 2 is arranged on one side of the main housing 1. The main housing 1 is a chassis with a size of 19 / 3 inches. The wiring board 2 is a back-insert type structure. The embedded type can realize the rear wiring installation method, and the strong and weak electricity are isolated, which greatly enhances the electrical performance of the product. Among them, the wiring board 2 is a prior art. The wiring board 2 is used to connect the circuit and the data communication interface. In this embodiment, a backplane with a standard RS485 communication interface and MODBus communication protocol and configured with 2 Ethernet interfaces is adopted. A door panel 3 is arranged on the side of the main housing 1 away from the wiring board 2. An opening is arranged on one side of the main housing 1, and an installation structure is arranged inside the main housing 1. A limiting component is arranged on the side of the main housing 1 close to the installation structure;

[0027] The installation structure includes a slide rail 4 fixedly connected to the inner wall of the main housing 1. An inner frame assembly for installing components is slidably connected to the slide rail 4. The inner frame assembly can only slide in the horizontal direction. An L-shaped plate 5 is fixedly connected to one side of the inner frame assembly. The wiring board 2 is arranged on the L-shaped plate 5. A connecting plate 6 is fixedly connected to the side wall of the L-shaped plate 5 away from the backplane. The limiting component is clamped with the connecting plate 6;

[0028] In the above design, the components are installed on the inner frame assembly, and the main housing 1 and the L-shaped plate 5 can form a complete housing to contain the components. When the online monitoring device needs to be maintained and replaced, the restriction of the limiting component on the connecting plate 6 is released, and then the inner frame assembly is slid out of the main housing 1. In this way, the user can have a wider operating space, which is convenient for the user to operate the components on the inner frame assembly, avoiding the dilemma of difficult operation in a narrow space, and at the same time, it will not damage other components during maintenance and replacement operations. This not only improves the user's operation efficiency but also has better safety.

[0029] The inner frame assembly includes a frame body 7. A transverse plate 8 is fixedly connected inside the frame body 7, and a plurality of shaft rods 9 are rotatably connected inside the frame body 7. A wire passing hole 10 is formed in the shaft rod 9, and a mounting plate (electrical components not shown in the figure) for installing components is fixedly connected to the shaft rod 9;

[0030] The transverse plate 8 is arranged in the middle of the frame body 7, so it is fixedly connected. The mounting plates are respectively arranged above and below the transverse plate 8. The shaft rod 9 is a hollow tube, and a plurality of wire passing holes 10 are formed in the side wall of the shaft rod 9. The cable for connecting the components enters the shaft rod 9 from one end of the shaft rod 9 and is connected to the components on the mounting plate through the wire passing holes 10. This design can ensure that when the mounting plate rotates, it will not be restricted by the cable connecting the components, making it more convenient for the user to operate. At the same time, the mounting plate with a rotating design is used to install various components in layers. Some components can also be directly installed on the frame body 7. And during maintenance and replacement operations, the connecting plate 6 can be rotated to avoid interference between multiple connecting plates 6 and components with the user's operation.

[0031] The shaft rod 9 is rotatably connected to the frame body 7 through a damping rotating shaft. The shaft rod 9 and the frame body 7 connected by the damping rotating shaft can make the shaft rod 9 be softly fixed after rotating to any position, which is more convenient for the user to operate;

[0032] A limiting card 18 is fixedly connected to the inner wall of the inner housing, and a side bar 19 matching the limiting card 18 is fixedly connected to the mounting plate. The arrangement of the limiting card 18 and the side bar 19 can fix the mounting plate when the installation structure is inside the main housing 1.

[0033] The limiting component includes a limiting plate 11. A through hole is formed in the limiting plate 11, and a limiting rod 12 is slidably connected in the through hole. A blind hole 13 matching the limiting rod 12 is formed in the connecting plate 6. A connecting rod 14 is slidably connected to the door panel 3, and the limiting rod 12 is rotatably connected to the connecting rod 14.

[0034] In this design, the limit rod 12 passes through the through hole and the blind hole 13, thereby realizing the fixation of the installation structure. Especially when the door panel 3 is closed, the inner frame assembly cannot be slid out of the main housing 1, and the relevant lock can be directly set on the door panel 3. After the door panel 3 is opened, the connecting rod 14 still needs to be slid so that the limit rod 12 is disengaged from the blind hole 13 before the inner frame assembly can be slid out.

[0035] A compression spring 17 is fixedly connected to the side wall of the door panel 3, and the compression spring 17 is abutted against the connecting rod 14. In this design, the compression spring 17 is used to limit the connecting rod 14, which can keep the limit rod 12 restricting the inner frame assembly. Only when the user needs to slide out the inner frame assembly, manual operation can make the inner frame assembly slide, which is more convenient for daily use.

[0036] A circuit assembly 16 is arranged on one side of the frame body 7 close to the door panel 3, and a control panel 15 is arranged on the door panel 3. The circuit assembly 16 is a flexible cable, and the control panel 15 facilitates the user to operate the monitoring device outside the monitoring device and provides functions such as a warning lamp and a display panel.

[0037] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An online power quality monitoring device, comprising a main housing (1), a wiring board (2) being arranged on one side of the main housing (1), and a door panel (3) being arranged on a side of the main housing (1) away from the wiring board (2), characterized in that: An opening is provided on one side of the main shell (1), and a mounting structure is provided inside the main shell (1), and a limit assembly is provided on a side of the main shell (1) close to the mounting structure; The mounting structure comprises a slide rail (4) fixedly connected to the inner wall of the main housing (1); an inner frame assembly for mounting components is slidably connected to the slide rail (4); an L-shaped plate (5) is fixedly connected to one side of the inner frame assembly; the wiring board (2) is arranged on the L-shaped plate (5); a connecting plate (6) is fixedly connected to the side wall of the L-shaped plate (5) away from the back plate; and the limit assembly is clamped with the connecting plate (6).

2. The device for online monitoring of power quality according to claim 1, characterized in that: The inner frame assembly comprises a frame body (7), a transverse plate (8) is fixedly connected inside the frame body (7), and a plurality of shafts (9) are rotatably connected inside the frame body (7), threading holes (10) are provided on the shafts (9), and a mounting plate for mounting components is fixedly connected to the shafts (9).

3. The device for online monitoring of power quality according to claim 2, characterized in that: The limiting assembly comprises a limiting plate (11), the limiting plate (11) is provided with a through hole, and a limiting rod (12) is slidably connected in the through hole; the connecting plate (6) is provided with a blind hole (13) matching the limiting rod (12); the door panel (3) is slidably connected with a connecting rod (14), and the limiting rod (12) is rotatably connected to the connecting rod (14).

4. The device for online monitoring of power quality according to claim 2, characterized in that: A circuit assembly (16) is provided on one side of the frame (7) close to the door panel (3), and a control panel (15) is provided on the door panel (3).

5. The device for online monitoring of power quality according to claim 3, characterized in that: A compression spring (17) is fixedly connected to the side wall of the door panel (3), and the compression spring (17) and the connecting rod (14) are arranged to abut against each other.

6. The device for online monitoring of power quality according to claim 2, characterized in that: The shaft rod (9) is rotationally connected to the frame body (7) via a damping shaft.

7. The device for online monitoring of power quality according to claim 2, characterized in that: A limit card (18) is fixedly connected to the inner wall of the inner shell, and a side strip (19) matching the limit card (18) is fixedly connected to the mounting plate.

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