Lightning protection grounding resistance detection simulation device

Abstract

The utility model belongs to the technical field of grounding resistance testing, and discloses a lightning protection grounding resistance detection simulation device which comprises a simulation device body, the simulation device body is of a box body structure, a circuit board is arranged in the box body, and a resistance matrix and grounding resistance values meeting different requirements are arranged on the circuit board. A front panel of the box body is provided with an analog electrode wiring port, and is connected with a lightning protection grounding resistance detection device through the analog electrode wiring port; a rear panel of the box body is provided with a resistance gear switch, the resistance gear switch is connected with the circuit board, and different resistance values accessed to the circuit board are selected through the resistance gear switch; the device is intensive and miniaturized, can simulate various grounding resistance conditions, improves the accuracy of grounding resistance value setting, and avoids habitual misreading of trainees.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of grounding resistance testing, and particularly relates to a lightning protection grounding resistance detection simulation device. BACKGROUND

[0002] In actual work, the lightning protection grounding resistance of a place with lightning protection requirements needs to be detected regularly. Correctly using a grounding resistance tester to measure the grounding resistance of a lightning protection grounding body is one of the basic skills of a staff member in the related field and is a skill that the staff member must master.

[0003] The grounding resistance of a lightning protection grounding body usually requires that the impulse grounding resistance is not greater than 10 ohms. At present, a current-voltage table far distance method (i.e., a three-pole far distance method) is usually used to detect the grounding resistance. Among them, a potential probe P and a current probe C are 20 m and 40 m away from the grounding body E respectively. This requires that an actual site with a width of more than 40 m can be used for training or examination. Therefore, the three-pole far distance method requires an operator to be skilled in the use of detection instruments and familiar with the detection principle. However, the three-pole far distance method has problems such as difficulty in finding a training site, difficulty in laying a grounding body and difficulty in setting a grounding resistance change, and cannot meet the indoor detection training requirements of an operator. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the deficiencies of the prior art, the application provides a lightning protection grounding resistance detection simulation device which can simulate various grounding resistance conditions and complete detection operations by being connected with a lightning protection grounding resistance detection instrument.

[0005] The utility model provides a lightning protection grounding resistance detection simulation device, including simulation device body, the simulation device body is the box structure, be provided with the circuit board in the box, be provided with resistance matrix on the circuit board, satisfy different requirement's grounding resistance resistance value, be provided with simulation electrode terminal in the front panel of the box, connect lightning protection grounding resistance detection device through simulation electrode terminal, be provided with resistance gear switch in the back panel of the box, resistance gear switch connects the circuit board, select the different resistance value on the circuit board through resistance gear switch.

[0006] The lightning protection grounding resistance detection simulation device provided by the application includes a simulation grounding E pole terminal post, a simulation voltage P pole terminal post and a simulation current C pole terminal post.

[0007] The lightning protection grounding resistance detection simulation device provided by the application further includes a capacitor on the circuit board, and the capacitor is connected with the resistance matrix; and the resistance matrix is connected with the simulation grounding E pole terminal post, the simulation voltage P pole terminal post and the simulation current C pole terminal post.

[0008] The lightning protection grounding resistance detection simulation device provided in the application, the resistance matrix includes a protection resistance R0, a first simulation resistance R1, a second simulation resistance R2, a third simulation resistance R3, a fourth simulation resistance R4, a fifth simulation resistance R5, and a sixth simulation resistance R6.

[0009] The first simulation resistance R1, the second simulation resistance R2, the third simulation resistance R3, the fourth simulation resistance R4, the fifth simulation resistance R5, and the sixth simulation resistance R6 are connected in parallel with each other and in series with the protection resistance R0.

[0010] The lightning protection grounding resistance detection simulation device provided in the application, the resistance gear switch is a single-knife six-gear switch, including an R1 gear, an R2 gear, an R3 gear, an R4 gear, an R5 gear, and an R6 gear.

[0011] The lightning protection grounding resistance detection simulation device provided in the application, one end of the resistance gear switch is connected to the simulation ground E terminal post, and the other end is connected to the resistance matrix.

[0012] One end of the first simulation resistance R1, the second simulation resistance R2, the third simulation resistance R3, the fourth simulation resistance R4, the fifth simulation resistance R5, and the sixth simulation resistance R6 is connected to the simulation voltage P terminal post; the other end of the first simulation resistance R1 is connected to the R1 gear of the resistance gear switch, the other end of the second simulation resistance R2 is connected to the R2 gear of the resistance gear switch, the other end of the third simulation resistance R3 is connected to the R3 gear of the resistance gear switch, the other end of the fourth simulation resistance R4 is connected to the R4 gear of the resistance gear switch, the other end of the fifth simulation resistance R5 is connected to the R5 gear of the resistance gear switch, and the other end of the sixth simulation resistance R6 is connected to the R6 gear of the resistance gear switch.

[0013] The lightning protection grounding resistance detection simulation device provided in the application, one end of the protection resistance R0 is connected to the simulation voltage P terminal post, and the other end of the protection resistance R0 is connected to the simulation current C terminal post.

[0014] The lightning protection grounding resistance detection simulation device provided in the application, one end of the capacitor is connected to the simulation voltage P terminal post, and the other end of the capacitor is connected to the simulation current C terminal post.

[0015] The lightning protection grounding resistance detection simulation device provided by the application, the resistance value of the protection resistance R0 is greater than 2KΩ, the resistance value of the first simulation resistance R1, the second simulation resistance R2, the third simulation resistance R3, the fourth simulation resistance R4, the fifth simulation resistance R5 and the sixth simulation resistance R6 is any one of 2Ω±5%, 3.9Ω±5%, 10Ω±5%, 20Ω±5%, 100Ω±5%, 1MΩ±5%, and the resistance values of the resistance of the first simulation resistance R1, the second simulation resistance R2, the third simulation resistance R3, the fourth simulation resistance R4, the fifth simulation resistance R5 and the sixth simulation resistance R6 are not repeated.

[0016] The lightning protection grounding resistance detection simulation device provided by the application, the capacitor is a non-polarity capacitor with a capacitance of 4μF and a voltage resistance of 450v.

[0017] The beneficial effect of the utility model is: the application provides a lightning protection grounding resistance detection simulation device, which is connected with the lightning protection grounding resistance detection device through the simulation electrode connection port arranged on the front panel, and the resistance gear switch arranged on the rear panel can select different resistance gears to simulate the grounding resistance detection; the device can be intensive and small, and the man-machine interaction interface is improved, the operation interface of the switching resistance value is more intuitive, convenient, and the accuracy of the grounding resistance value setting is improved, and the habit of misreading of the training personnel is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] The technical solutions and other beneficial effects of the application will be apparent from the following detailed description of the specific embodiments of the application in combination with the accompanying drawings.

[0019] Figure 1 The front panel schematic view of the lightning protection grounding resistance detection simulation device provided by the embodiment.

[0020] Figure 2 The rear panel schematic view of the lightning protection grounding resistance detection simulation device provided by the embodiment.

[0021] Figure 3 The circuit board circuit structure schematic view of the lightning protection grounding resistance detection simulation device provided by the embodiment. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the application will be described clearly and completely in combination with the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the application.

[0023] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0024] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0025] Because the existing technology has the problems of difficult training site finding, difficult grounding body layout, and difficult grounding resistance change setting in the grounding resistance operation training by the three-pole long-distance method, there is no grounding resistance detection simulation device suitable for the three-pole long-distance method instrument to meet the indoor detection training of the operator. The embodiment provides a lightning protection grounding resistance detection simulation device which can be suitable for a lightning protection grounding resistance three-pole long-distance method detection device, connected with a lightning protection grounding resistance detection instrument, can simulate various grounding resistance conditions, and complete detection operation.

[0026] The lightning protection grounding resistance detection simulation device provided in this embodiment includes a simulation device body, which is a box structure, that is, the lightning protection grounding resistance detection simulation device has a cuboid shape, including a top panel, a bottom plate, and four side panels. Inside the box, a circuit board is installed, and the circuit board has a resistor matrix to meet different grounding resistance requirements, allowing for the simulation of different resistance values. A simulation electrode connection port is provided on the front panel of the box, through which the lightning protection grounding resistance detection device is connected. A resistance range switch K is provided on the rear panel of the box, and the resistance range switch K is connected to the circuit board, allowing selection of different resistance values ​​connected to the circuit board.

[0027] Figure 1 This is a schematic diagram of the front panel of the lightning protection grounding resistance detection simulation device provided in this embodiment.

[0028] like Figure 1 As shown, a simulated electrode connection port is provided on the front panel. The simulated electrode connection port includes a simulated ground (E) terminal, a simulated voltage (P) terminal, and a simulated current (C) terminal. The simulated ground (E) terminal, the simulated voltage (P) terminal, and the simulated current (C) terminal are all metal terminals, allowing for easy connection to the alligator clips of the lightning protection grounding resistance detection device.

[0029] In addition, in this embodiment, the simulated grounding E terminal, the simulated voltage P terminal, and the simulated current C terminal can be changed to banana plug female terminals as needed to correspond to banana plug male terminals of the lightning protection grounding resistance detection device measuring line.

[0030] Figure 2 This is a schematic diagram of the rear panel of the lightning protection grounding resistance detection simulation device provided in this embodiment.

[0031] like Figure 2 As shown, in this embodiment, the resistance range switch K is a single-pole six-position switch, including R1, R2, R3, R4, R5, and R6 positions. The R1, R2, R3, R4, R5, and R6 positions correspond to different resistances in the resistance matrix.

[0032] Figure 3 This is a schematic diagram of the circuit board structure of the lightning protection grounding resistance detection simulation device provided in this embodiment.

[0033] like Figure 3 As shown, the circuit board includes a resistor matrix and a capacitor C, with the capacitor C connected to the resistor matrix; the resistor matrix is ​​connected to the simulated ground E terminal, the simulated voltage P terminal, and the simulated current C terminal.

[0034] Specifically, the resistor matrix includes a protection resistor R0, a first analog resistor R1, a second analog resistor R2, a third analog resistor R3, a fourth analog resistor R4, a fifth analog resistor R5, and a sixth analog resistor R6.

[0035] The first analog resistor R1, the second analog resistor R2, the third analog resistor R3, the fourth analog resistor R4, the fifth analog resistor R5, and the sixth analog resistor R6 are connected in parallel and then connected in series with the protection resistor R0.

[0036] like Figure 3 As shown, the resistance range switch K is connected to the resistor matrix, wherein one end of the resistance range switch K is connected to the simulated ground E terminal, and the other end is connected to the resistor matrix. Specifically, one end of the first simulated resistor R1, the second simulated resistor R2, the third simulated resistor R3, the fourth simulated resistor R4, the fifth simulated resistor R5, and the sixth simulated resistor R6 are all connected to the simulated voltage P terminal; the other end of the first simulated resistor R1 is connected to the R1 position of the resistance range switch K, the other end of the second simulated resistor R2 is connected to the R2 position of the resistance range switch K, the other end of the third simulated resistor R3 is connected to the R3 position of the resistance range switch K, the other end of the fourth simulated resistor R4 is connected to the R4 position of the resistance range switch K, the other end of the fifth simulated resistor R5 is connected to the R5 position of the resistance range switch K, and the other end of the sixth simulated resistor R6 is connected to the R6 position of the resistance range switch K.

[0037] One end of the protection resistor R0 is connected to the P terminal of the analog voltage, and the other end of the protection resistor R0 is connected to the C terminal of the analog current.

[0038] One end of the capacitor C is connected to the P terminal of the analog voltage, and the other end of the capacitor C is connected to the C terminal of the analog current.

[0039] Specifically, such as Figure 3 As shown, there is an AC voltage between the simulated grounding E terminal and the simulated current C terminal. The resistance range switch K can select different resistors to connect between the simulated grounding E terminal and the simulated voltage P terminal to perform different grounding resistance simulation tests. The protective resistor R0, in addition to voltage division, also limits the current in the circuit, protecting the lightning protection grounding resistance detection device from damage caused by excessive current. The capacitor C has a current shunting function; as the operating frequency decreases, the shunting current decreases, resulting in a higher detection result, thus simulating the influence of the operating frequency on the detection result.

[0040] The resistance value of the protection resistor R0 is greater than 2KΩ, the resistance value of the first analog resistor R1, the second analog resistor R2, the third analog resistor R3, the fourth analog resistor R4, the fifth analog resistor R5 and the sixth analog resistor R6 is any one of 2Ω±5%, 3.9Ω±5%, 10Ω±5%, 20Ω±5%, 100Ω±5%, 1MΩ±5%, and the resistance values of the first analog resistor R1, the second analog resistor R2, the third analog resistor R3, the fourth analog resistor R4, the fifth analog resistor R5 and the sixth analog resistor R6 are not repeated. The capacitor C is a 4μF non-polarity capacitor C with a voltage resistance of 450v.

[0041] In the embodiment, the resistance value of the protection resistor R0 is 2KΩ, the resistance value of the first analog resistor R1 is 2Ω, the resistance value of the second analog resistor R2 is 3.9Ω, the resistance value of the third analog resistor R3 is 10Ω, the resistance value of the fourth analog resistor R4 is 20Ω, the resistance value of the fifth analog resistor R5 is 100Ω, and the resistance value of the sixth analog resistor R6 is 1MΩ.

[0042] In the embodiment, different resistance values are set to simulate the detection of different grounding resistance results. There are requirements that the grounding resistance of different types is not greater than 4Ω, not greater than 10Ω and not greater than 100Ω, so different resistance values are set to simulate the passing and failing of the detection results. The resistance values of the first analog resistor R1, the second analog resistor R2, the third analog resistor R3, the fourth analog resistor R4, the fifth analog resistor R5 and the sixth analog resistor R6 provided in the embodiment can also be replaced with different resistance values according to different needs, and are not limited to the resistance values disclosed in the embodiment. In particular, only when the precision requirement of the simulated grounding resistance is 5%, the resistance value must be selected from the resistance series provided in the embodiment, and non-standard resistance values cannot be selected. The lightning protection grounding resistance detection simulation device provided in the embodiment can only select one resistance for detection each time when in use, and simulate the grounding resistance values in different situations.

[0043] According to the lightning protection grounding resistance detection simulation device provided by the embodiment, the simulation grounding E pole terminal, the simulation voltage P pole terminal and the simulation current C pole terminal are connected with the grounding E pole, the voltage P pole and the current C pole of the lightning protection grounding resistance detection device respectively, different simulation resistance can be selected to enter the circuit by rotating the resistance position switch K, and then the simulation detection is carried out by the lightning protection grounding resistance detection device.

[0044] The application provides a lightning protection grounding resistance detection simulation device, which is connected with the lightning protection grounding resistance detection device through the simulation electrode connection port arranged on the front panel, and the simulation grounding resistance detection is carried out by selecting the resistance of different positions through the resistance position switch K arranged on the rear panel; the device can be intensive and small in size, the man-machine interface is improved, the operation interface of the resistance value switching is more intuitive and convenient, the accuracy of the grounding resistance value setting is improved, and the habitual misreading of the training personnel is avoided.

[0045] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the utility model embodiments. Finally, it should be noted that, in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or terminal device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or terminal device including the element.

[0046] The above has carried out the detailed introduction to the lightning protection grounding resistance detection simulation device provided by the embodiment of the application, the principle and implementation mode of the application are described in this paper, the above embodiment is only used to help understand the technical scheme of the application and its core idea; ordinary skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the application.

Claims

1. A lightning protection grounding resistance detection simulation device, characterized in that, The simulation device body is a box structure, an electric circuit board is arranged inside the box, a resistance matrix is arranged on the electric circuit board, and ground resistance resistance values meeting different requirements are satisfied; a simulation electrode connection port is arranged on the front panel of the box, and a lightning protection ground resistance detection device is connected through the simulation electrode connection port; a resistance gear switch is arranged on the rear panel of the box, the resistance gear switch is connected with the electric circuit board, and different resistance values on the electric circuit board are selected through the resistance gear switch.

2. The lightning protection grounding resistance detection simulation device according to claim 1, characterized in that, The simulation electrode connection port comprises a simulation ground E pole connection column, a simulation voltage P pole connection column and a simulation current C pole connection column.

3. The lightning protection grounding resistance detection simulation device according to claim 2, characterized in that, The electric circuit board further comprises a capacitor, the capacitor is connected with the resistance matrix; the resistance matrix is connected with the simulation ground E pole connection column, the simulation voltage P pole connection column and the simulation current C pole connection column.

4. The lightning protection grounding resistance detection simulation device according to claim 3, characterized in that, The resistance matrix comprises a protection resistance R0, a first simulation resistance R1, a second simulation resistance R2, a third simulation resistance R3, a fourth simulation resistance R4, a fifth simulation resistance R5 and a sixth simulation resistance R6. The first simulation resistance R1, the second simulation resistance R2, the third simulation resistance R3, the fourth simulation resistance R4, the fifth simulation resistance R5 and the sixth simulation resistance R6 are connected in parallel with each other and in series with the protection resistance R0.

5. The lightning protection grounding resistance detection simulation device according to claim 4, characterized in that, The resistance gear switch is a single-knife six-gear switch, comprising an R1 gear, an R2 gear, an R3 gear, an R4 gear, an R5 gear and an R6 gear.

6. The lightning protection grounding resistance detection simulation device according to claim 5, characterized in that, One end of the resistance gear switch is connected with the simulation ground E pole connection column, and the other end is connected with the resistance matrix. One end of the first simulation resistance R1, the second simulation resistance R2, the third simulation resistance R3, the fourth simulation resistance R4, the fifth simulation resistance R5 and the sixth simulation resistance R6 is connected with the simulation voltage P pole connection column; the other end of the first simulation resistance R1 is connected with the R1 gear of the resistance gear switch, the other end of the second simulation resistance R2 is connected with the R2 gear of the resistance gear switch, the other end of the third simulation resistance R3 is connected with the R3 gear of the resistance gear switch, the other end of the fourth simulation resistance R4 is connected with the R4 gear of the resistance gear switch, the other end of the fifth simulation resistance R5 is connected with the R5 gear of the resistance gear switch, and the other end of the sixth simulation resistance R6 is connected with the R6 gear of the resistance gear switch.

7. The lightning protection grounding resistance detection simulation device according to claim 6, characterized in that, One end of the protection resistance R0 is connected with the simulation voltage P pole connection column, and the other end is connected with the simulation current C pole connection column.

8. The lightning protection grounding resistance detection simulation device according to claim 7, characterized in that, One end of the capacitor is connected with the simulation voltage P pole connection column, and the other end is connected with the simulation current C pole connection column.

9. The lightning protection grounding resistance detection simulation device according to claim 8, characterized in that, The resistance value of the protection resistor R0 is greater than 2KΩ, the resistance value of the first analog resistor R1, the second analog resistor R2, the third analog resistor R3, the fourth analog resistor R4, the fifth analog resistor R5 and the sixth analog resistor R6 is any one of 2Ω±5%, 3.9Ω±5%, 10Ω±5%, 20Ω±5%, 100Ω±5%, 1MΩ±5%, and the resistance values of the first analog resistor R1, the second analog resistor R2, the third analog resistor R3, the fourth analog resistor R4, the fifth analog resistor R5 and the sixth analog resistor R6 are not repeated.

10. The lightning protection grounding resistance detection simulation device according to claim 9, characterized in that, The capacitor is a non-polarity capacitor with 4μF and 450v voltage resistance.

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