Integrated SPD intelligent monitoring device and power distribution system

Abstract

The utility model relates to an integrated SPD intelligent monitoring device and power distribution system, comprising a housing, a mutual inductance coil, an acquisition mechanism and an output terminal, the housing is provided with a threading hole in a penetrating manner, and the hole wall of the threading hole forms a threading column on the housing; the mutual inductance coil is wound on the threading column; the acquisition mechanism is connected with the mutual inductance coil; and the output terminal is arranged on the shell and is connected with the acquisition mechanism. According to the integrated SPD intelligent monitoring device provided by the utility model, the mutual inductance coil is used for monitoring current data passing through the threading hole, the data is processed and converted into a signal which can be identified by the SPD intelligent monitoring device through the acquisition mechanism, and the signal is output from the output terminal. When being applied to the SPD, the device can be directly connected to a power supply and a signal line of the SPD, original equipment does not need to be transformed, and the SPD does not need to be externally provided with monitoring equipment. And installation and part management and control are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an integrated lightning protection monitoring device and a power distribution system. Background Art

[0002] Power supply lightning arrester, also known as lightning arrester, surge protector, surge protector, overvoltage protector, etc. (SPD for short), SPD uses modern electrical and other technologies to prevent damage to equipment struck by lightning.

[0003] Most existing SPDs require external monitoring equipment. For example, the Chinese patent with publication number CN216056322U discloses "a lightning protection circuit breaker, comprising a shell, a first cavity connected to opposite sides is arranged in the shell, a first circuit breaker body, a first transformer and a first lightning arrester are arranged in the first cavity, the output end of the first circuit breaker body is connected to the input end of the first lightning arrester, passes through the first transformer, and is connected to the output end of the lightning protection circuit breaker, and the output end of the first lightning arrester is grounded". This type of SPD requires an external transformer as a monitoring device, which takes up space and has a complex structure. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an integrated lightning protection monitoring device and a power distribution system to integrate the intelligent module and monitoring equipment of the SPD.

[0005] The technical solution of the utility model is as follows:

[0006] An integrated SPD intelligent monitoring device comprises a shell, a mutual inductance coil, a collection mechanism and an output terminal. The shell is provided with a threading hole, and the hole wall of the threading hole forms a threading post on the shell; the mutual inductance coil is wound on the threading post; the collection mechanism is connected to the mutual inductance coil; the output terminal is arranged on the shell and connected to the collection mechanism.

[0007] A power distribution system comprises a lightning protection module, wherein the lightning protection module comprises the integrated SPD intelligent monitoring device.

[0008] The beneficial technical effects of the utility model are as follows:

[0009] (1) The integrated SPD intelligent monitoring device in the utility model is provided with a mutual inductance coil, a collection mechanism and an output terminal in the housing. The mutual inductance coil monitors the current data passing through the threading hole, and the data is processed by the collection mechanism and converted into a signal recognizable by the SPD intelligent monitoring device, and output from the output terminal. When applied to the SPD, the above-mentioned integrated SPD intelligent monitoring device can be directly connected to the power supply and signal line of the SPD without modifying the original equipment, and the SPD does not need an external monitoring device. Reduce installation and parts control.

[0010] (2) Furthermore, it also includes a display acquisition board, an indicator light and a display screen connected to the display acquisition board, so that the monitored circuit can be visualized, which is convenient for operators to maintain and manage.

[0011] (3) Furthermore, a cover plate is provided on the shell, and the cover plate is snap-fitted to the shell, so as to facilitate the inspection and maintenance of the internal structure of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The schematic diagram of the structure of the integrated SPD intelligent monitoring device of the utility model in the main viewing direction is shown.

[0013] Figure 2 The utility model shows a cross-sectional structural schematic diagram of the integrated SPD intelligent monitoring device.

[0014] Figure 3 The three-dimensional structural schematic diagram of the integrated SPD intelligent monitoring device of the utility model is shown.

[0015] Figure 4 The schematic diagram shows the structure of the engaging part of the housing and the cover plate in the integrated SPD intelligent monitoring device of the utility model.

[0016] Markings in the accompanying drawings:

[0017] 1. Shell; 11. Threading hole; 12. Threading column; 13. Slot; 14. Protrusion; 2. Cover plate; 21. Extension; 3. Mutual inductance coil; 31. Terminal block; 32. Magnetic core; 4. Collection mechanism; 41. Current collection board; 42. Power collection board; 43. Signal collection board; 44. Connecting pin; 5. Display mechanism; 51. Display collection board; 52. Indicator light; 53. Display screen; 6. Input terminal; 7. Output terminal. DETAILED DESCRIPTION

[0018] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0019] In the description of the present invention, the orientations or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply 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 understood as a limitation on the present invention.

[0020] Embodiment 1

[0021] Figure 1 The schematic diagram of the structure of the integrated SPD intelligent monitoring device of the utility model in the main viewing direction is shown. Figure 2 The cross-sectional structure diagram of the integrated SPD intelligent monitoring device of the utility model is shown. Figure 1 and Figure 2 , an integrated SPD intelligent monitoring device, including a housing 1, a mutual inductance coil 3, a collection mechanism 4 and an output terminal 7, a threading hole 11 is opened through the housing 1, and the hole wall of the threading hole 11 forms a threading post 12 on the housing 1. The mutual inductance coil 3 is wound on the threading post 12. A plurality of threading holes 11 can be provided. For example, when measuring three-phase current, three threading holes 11 are provided, and each threading hole 11 is connected to a loop to ensure accurate measurement of the current of each loop. The collection mechanism 4 is connected to the mutual inductance coil 3 to convert the data monitored by the mutual inductance coil 3 into a digital signal, which is convenient for effective data transmission. The output terminal 7 is provided on the housing 1 and connected to the collection mechanism 4, and the monitoring data can be conveniently output through the output end. When the above-mentioned integrated SPD intelligent monitoring device is applied to the SPD, the above-mentioned integrated SPD intelligent monitoring device can be directly connected to the power supply and signal line of the SPD, without the need to modify the original equipment or to install external monitoring equipment. Reduce installation and parts control.

[0022] The specific structures of the mutual inductance coil 3 and the display mechanism 5 are described below:

[0023] Figure 3 The three-dimensional structure diagram of the integrated SPD intelligent monitoring device of the utility model is shown. Figure 1 and Figure 3 The mutual inductance coil 3 includes a magnetic core 32, a primary winding (not marked in the figure) wound on the magnetic core 32, and a secondary winding (not marked in the figure) wound outside the primary winding. The magnetic core 32 concentrates, guides and shortens the magnetic flux. The primary winding receives the measured current signal. The secondary winding wound outside the primary winding outputs the measured electrical signal. The secondary winding in the mutual inductance coil 3 is connected to the terminal 31, and the acquisition mechanism 4 is connected to the mutual inductance coil 3 through the terminal 31 to receive the electrical signal monitored by the mutual inductance coil 3.

[0024] The display mechanism 5 is also included, and the display mechanism 5 includes a display acquisition board 51 connected to the acquisition mechanism 4, an indicator light 52 connected to the display acquisition board 51, and a display screen 53. The display acquisition board 51 receives the signal of the acquisition mechanism 4 and visualizes it through the indicator light 52 and the display screen 53, which is convenient for operators to maintain and manage. Correspondingly, an input terminal 6 is provided on the housing 1 to connect the display mechanism 5, so as to connect a power source (not shown in the figure) for power supply.

[0025] The specific structure of the collection mechanism 4 is described below:

[0026] Please refer to Figure 1 The acquisition mechanism 4 includes a current acquisition board 41, a power acquisition board 42 and a signal acquisition board 43. The current acquisition board 41 monitors the current magnitude, frequency signal, angular displacement signal and acceleration signal through the mutual inductance coil 3, and converts them into digital signals. The frequency signal, angular displacement signal and acceleration signal of the current are integrated to obtain the pulse data of the current, and the magnitude of the current is combined to determine whether the SPD protection circuit needs to be activated. The power acquisition board 42 and the signal acquisition board 43 collect and summarize the data and transmit them remotely to facilitate automation. A connecting pin 44 is provided between the current acquisition board 41, the power acquisition board 42 and the signal acquisition board 43 to transmit signals and supply current.

[0027] The specific structure of the housing 1 is described below:

[0028] Figure 4 The schematic diagram of the structure of the integrated SPD intelligent monitoring device of the utility model shows the joint between the housing and the cover. Figure 2 and Figure 4The housing 1 is open on one side, and a cover plate 2 is provided at the opening of the housing 1, so as to facilitate viewing and maintaining the components inside the housing 1. An extension 21 is provided on the outer edge of the cover plate 2, and a slot 13 is provided on the housing 1 to engage with the extension 21 to fix the position of the cover plate 2 and the housing 1. A protrusion 14 is provided on the inner side of the housing 1 around the threading post 12, and a wire cavity (not marked in the figure) is formed between the protrusion 14 and the threading post 12 to enhance the stability of the coil.

[0029] The specific workflow of this embodiment is as follows:

[0030] The input terminal 6 is connected to a power source for power supply. The line to be monitored (not shown in the figure) is passed through the threading hole 11, and the mutual inductance coil 3 monitors the current of the line, and transmits the electrical signal to the current acquisition board 41 of the acquisition mechanism 4 through the wiring terminal 31. The current acquisition board 41 converts the current signal into a voltage digital signal, and transmits it to the power acquisition board 42 and the signal acquisition board 43 through the connecting pin 44 for remote transmission. The display acquisition board 51 receives the signal of the acquisition mechanism 4 and visually expresses it through the indicator light 52 and the display screen 53. At this time, the output terminal 7 can output the voltage digital signal converted by the acquisition mechanism 4.

[0031] Embodiment 2

[0032] Based on the first embodiment, the second embodiment discloses a power distribution system, including a lightning protection module, the lightning protection module includes an integrated SPD intelligent monitoring device, and the SPD intelligent monitoring device is connected to the power supply and signal line of the SPD.

[0033] The integrated SPD intelligent monitoring device in the first embodiment can be used for the monitoring module of the SPD, but is not limited to this. By utilizing its function of monitoring the magnitude of the current, frequency signal, angular displacement signal, and acceleration signal, it can serve as a current monitoring device in industrial automation equipment, power generation systems, and household circuit systems. For example, the integrated SPD intelligent monitoring device in the utility model is applied to various industrial equipment including motors and electrical appliances. By utilizing its function of monitoring the magnitude of the current, frequency signal, angular displacement signal, and acceleration signal, the operating status and current load of motors and electrical equipment are monitored, and current overload or abnormal conditions are detected in time to avoid equipment damage and safety accidents.

[0034] It can be seen that when the above-mentioned integrated SPD intelligent monitoring device is applied to the SPD, it can be directly connected to the power supply and signal line of the SPD, without the need to modify the original equipment, and the SPD does not need an external monitoring device. The installation and parts control are reduced. The structure of the above-mentioned power distribution system is also simplified.

[0035] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An integrated SPD intelligent monitoring device, characterized in that: It includes a housing, a mutual inductance coil, a collection mechanism and an output terminal. A threading hole is formed through the shell, and a threading post is formed on the shell through the hole wall of the threading hole; The mutual inductance coil is wound on the threading column; The acquisition mechanism is connected to the mutual inductance coil; The output terminal is arranged on the housing and connected to the collection mechanism.

2. The integrated SPD intelligent monitoring device according to claim 1, characterized in that: The mutual inductance coil includes a magnetic core, a primary winding wound on the magnetic core, and a secondary winding wound outside the primary winding.

3. The integrated SPD intelligent monitoring device according to claim 1, characterized in that: The mutual inductance coil is connected to a connection terminal, and the acquisition mechanism is connected to the mutual inductance coil through the connection terminal.

4. The integrated SPD intelligent monitoring device according to claim 1, characterized in that: The acquisition mechanism comprises a current acquisition board, a power acquisition board and a signal acquisition board.

5. The integrated SPD intelligent monitoring device according to claim 4, characterized in that: Connecting pins are arranged between the current acquisition board, the power acquisition board and the signal acquisition board.

6. The integrated SPD intelligent monitoring device according to claim 1, characterized in that: It also includes a display mechanism, which includes a display acquisition board connected to the acquisition mechanism, an indicator light and a display screen connected to the display acquisition board.

7. The integrated SPD intelligent monitoring device according to claim 1, characterized in that: One side of the shell is open, and a cover plate is arranged at the opening of the shell.

8. The integrated SPD intelligent monitoring device according to claim 7, characterized in that: An extension portion is arranged on the outer edge of the cover plate, and a clamping groove is arranged on the shell to clamp the extension portion.

9. The integrated SPD intelligent monitoring device according to claim 7, characterized in that: The inner side of the shell is provided with a protrusion surrounding the threading column.

10. A power distribution system, characterized in that: It comprises a lightning protection module, and the lightning protection module comprises the integrated SPD intelligent monitoring device according to any one of claims 1 to 9.

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