Electronic insulation meter calibrating device for passenger train

Abstract

The utility model discloses an electronic insulation meter calibrating device for a passenger train, and belongs to the technical field of railway electrical equipment detection. In order to solve the problem of rapid detection of the electronic insulation meter for the passenger train, the electronic insulation meter detection device comprises an upper shell and a lower shell, and the upper shell is provided with a digital display high-voltage voltmeter, a switch, a fuse, a negative voltage binding post, a positive voltage binding post, a common point binding post, a first test point binding post, a second test point binding post and a third test point binding post. A combined circuit board, a battery and a buckle are arranged in the lower shell, and a charging port is formed in the side face of the lower shell. According to the utility model, whether the electronic insulation meter for the passenger train fails or not can be rapidly detected, the detection accuracy is more than 99%, and the detection time is reduced from 1 hour to 0.2 hour. The electronic insulation meter calibrating device for the passenger train is simple and visual in function, easy to operate, and capable of conveniently and quickly inspecting the electronic insulation meter in use.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway electrical equipment detection, and in particular relates to an electronic insulation meter calibration device for railway passenger cars. Background Art

[0002] The electronic insulation meter for railway passenger cars is an important detection device to ensure the safe operation of passenger trains and prevent poor insulation of passenger car electrical devices and lines. According to relevant national standards, the electronic insulation meter itself needs to undergo "initial verification", "subsequent verification" and "in-use inspection" to determine whether it is functional. Due to the lack of portable tooling equipment with unified standards, electronic insulation meters in passenger car operation and maintenance are currently only subject to "initial verification" for newly purchased electronic insulation meters and "subsequent verification" with a cycle of 1 year. For "in-use inspection", only simple open circuit and short circuit tests are performed. How to implement the measurement requirements of "in-use inspection" is a technical problem that needs to be solved urgently in railway passenger car maintenance and production operations. Summary of the invention

[0003] A brief overview of the present invention is given below in order to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to identify key or important parts of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0004] The utility model provides a verification device for an electronic insulation meter for a railway passenger car in order to solve the problem of rapid detection of an electronic insulation meter for a railway passenger car.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] An electronic insulation meter calibration device for railway passenger cars comprises an upper shell and a lower shell, wherein the upper shell is provided with a digital high-voltage voltage meter, a switch, a fuse, a negative voltage terminal, a positive voltage terminal, a common point terminal, a test point one terminal, a test point two terminal, and a test point three terminal;

[0007] A combined circuit board, a battery, and a buckle are arranged inside the lower shell, and a charging port is arranged on the side of the lower shell.

[0008] Furthermore, the test point one terminal is a 50MΩ test point terminal.

[0009] Furthermore, the test point two terminal is a 250MΩ test point terminal.

[0010] Furthermore, the test point three terminals are 500MΩ test point terminals.

[0011] Furthermore, the switch is a rocker-type switch.

[0012] Furthermore, the fuse 5 is a glass tube fuse.

[0013] Furthermore, the upper shell and the lower shell are connected by buckles, and the buckles are respectively arranged at the left and right ends of the lower shell, and the number of the buckles is 4.

[0014] Furthermore, the battery is a lithium rechargeable battery.

[0015] Furthermore, the charging port is a Type-C charging port.

[0016] Furthermore, the combined circuit board includes an insulation resistance measurement circuit, a digital voltage display circuit, an overcurrent fuse circuit, and a current limiting charging circuit.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses an electronic insulation meter calibration device for railway passenger cars. The digital high-voltage voltmeter is provided with a thousandths LED display screen, which is convenient for reading the indication error parameters. The 1% sampling resistors ("50MΩ", "250MΩ", "500MΩ", 3 in total) are customized according to the measurement standard requirements to meet the needs of the simulation test insulation value. The whole device has simple and intuitive functions and is easy to operate, so the electronic insulation meter can be tested conveniently and quickly during use.

[0019] The utility model discloses an electronic insulation meter calibrating device for railway passenger cars, which is provided with an overcurrent protection charging circuit.

[0020] The utility model discloses a railway passenger car electronic insulation meter verification device, which can quickly detect whether the railway passenger car electronic insulation meter is faulty, with a detection accuracy of more than 99% and a detection time reduced from 1 hour to 0.2 hours. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of the upper housing of an electronic insulation meter calibration device for railway passenger cars described in the utility model;

[0022] Figure 2 This is a front view of the lower shell of an electronic insulation meter calibration device for railway passenger cars described in the utility model;

[0023] Figure 3 It is a three-dimensional diagram of the upper and lower shells of an electronic insulation meter calibration device for railway passenger cars described in the utility model;

[0024] Figure 4 This is an insulation resistance measurement circuit diagram of an electronic insulation meter calibration device for railway passenger cars described in the utility model;

[0025] Figure 5 The utility model discloses a circuit diagram combining a digital voltage display circuit, an overcurrent fuse circuit and a current limiting charging circuit of an electronic insulation meter calibration device for railway passenger cars. DETAILED DESCRIPTION

[0026] Hereinafter, exemplary embodiments of the present invention will be described in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the specific goals of the developers, for example, to meet those constraints related to the system and the business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, for those skilled in the art who benefit from the disclosure of the present invention, such development work is merely a routine task.

[0027] It is also necessary to explain here that, in order to avoid obscuring the present invention due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0028] In order to further understand the content, features and functions of the utility model, the following specific implementation methods are given as examples, and the attached Figure 1 -Attached Figure 5 The detailed instructions are as follows:

[0029] An electronic insulation meter calibration device for railway passenger cars, comprising an upper shell 1 and a lower shell 2, wherein the upper shell 1 is provided with a digital high-voltage voltage meter 3, a switch 4, a fuse 5, a negative voltage terminal 6, a positive voltage terminal 7, a common point terminal 8, a test point one terminal 9, a test point two terminal 10, and a test point three terminal 11;

[0030] A combined circuit board 12 , a battery 13 , and a buckle 15 are disposed inside the lower shell 2 , and a charging port 14 is disposed on the side of the lower shell.

[0031] Furthermore, the test point one terminal 9 is a 50MΩ test point terminal.

[0032] Furthermore, the test point two terminal 10 is a 250MΩ test point terminal.

[0033] Furthermore, the test point three terminal 11 is a 500MΩ test point terminal.

[0034] Furthermore, the switch 4 is a rocker-type switch.

[0035] Furthermore, the fuse 5 is a glass tube fuse.

[0036] Furthermore, the upper shell 1 and the lower shell 2 are connected by buckles 15, and the buckles 15 are respectively arranged at the left and right ends of the lower shell 2, and the number of the buckles 15 is four.

[0037] Furthermore, the battery 13 is a lithium rechargeable battery, and its model is PISEN 18650 lithium rechargeable battery.

[0038] Furthermore, the charging port 14 is a Type-C charging port.

[0039] Furthermore, the combined circuit board 12 includes an insulation resistance measurement circuit, a digital voltage display circuit, an overcurrent fuse circuit, and a current limiting charging circuit.

[0040] Furthermore, the electronic insulation meter calibration device for railway passenger cars described in this embodiment has a volume of 998 cubic centimeters and a weight of 570 grams. Its physical state is one tenth of the traditional "ZX119-3 megohmmeter calibration device", with high portability and streamlined functions, which fully meets the needs of on-site production calibration.

[0041] Furthermore, the electronic insulation meter calibration device for railway passenger cars described in this embodiment uses a high-strength insulating plastic shell to meet different operating environments, and is equipped with a fuse protection circuit, a power switch, and a charging protection circuit to ensure safe and reliable use.

[0042] Furthermore, the electronic insulation meter calibration device for railway passenger cars described in this embodiment meets the daily inspection requirements of the Fluke 1508 and YYH-1301 intelligent insulation testers commonly used in railway passenger car maintenance.

[0043] Furthermore, the electronic insulation meter calibration device for railway passenger cars described in this embodiment has been tested by the "National Defense Science and Technology Industry 2311 Secondary Metrology Station" and the error is within the range of ±0.01%.

[0044] Furthermore, the base shell of the electronic insulation meter calibration device for railway passenger cars described in this embodiment is modeled by the designers themselves, has a large space for subsequent upgrades, adopts 3D printing, takes into account both low cost and ruggedness requirements, and the components used inside are purchased according to railway industry standards, are all standard and universal parts, and have no vulnerable components, and are independently designed and installed throughout the process.

[0045] Furthermore, the electronic insulation meter calibration device for railway passenger cars described in this embodiment is manufactured in accordance with JJG1005-2019 "Measurement and Calibration Procedure for Electronic Insulation Resistance Meters of the People's Republic of China", and meets the "in-use inspection" comparison and calibration requirements for "indication error" and "open circuit voltage".

[0046] It should be noted that relational terms such as "first" and "second" are used only 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 these entities or operations. Moreover, the terms "include", "comprise" or any other variants 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, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] Although the present application has been described above with reference to specific embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various features in the specific embodiments disclosed in the present application may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electronic insulation meter calibration device for railway passenger cars, characterized in that: The device comprises an upper housing (1) and a lower housing (2); the upper housing (1) is provided with a digital high-voltage voltage meter (3), a switch (4), a fuse (5), a negative voltage terminal (6), a positive voltage terminal (7), a common point terminal (8), a test point one terminal (9), a test point two terminal (10), and a test point three terminal (11); A combined circuit board (12), a battery (13), and a buckle (15) are arranged inside the lower shell (2), and a charging port (14) is arranged on the side of the lower shell (2).

2. The electronic insulation meter calibration device for railway passenger cars according to claim 1, characterized in that: The test point one terminal (9) is a 50MΩ test point terminal.

3. The electronic insulation meter calibration device for railway passenger cars according to claim 2, characterized in that: The test point second terminal (10) is a 250MΩ test point terminal.

4. The electronic insulation meter calibration device for railway passenger cars according to claim 3, characterized in that: The test point three binding posts (11) are 500MΩ test point binding posts.

5. The electronic insulation meter calibration device for railway passenger cars according to claim 4, characterized in that: The switch (4) is a rocker-type switch.

6. The electronic insulation meter calibration device for railway passenger cars according to claim 5, characterized in that: The fuse (5) is a glass tube type fuse.

7. The electronic insulation meter calibration device for railway passenger cars according to claim 6, characterized in that: The upper shell (1) and the lower shell (2) are connected via buckles (15), and the buckles (15) are respectively arranged at the left and right ends of the lower shell (2), and the number of the buckles (15) is four.

8. The electronic insulation meter calibration device for railway passenger cars according to claim 7, characterized in that: The battery (13) is a lithium rechargeable battery.

9. The electronic insulation meter calibration device for railway passenger cars according to claim 8, characterized in that: The charging port (14) is a Type-C charging port.

10. The electronic insulation meter calibration device for railway passenger cars according to claim 9, characterized in that: The combined circuit board (12) comprises an insulation resistance measuring circuit, a digital voltage display circuit, an overcurrent fusing circuit and a current limiting charging circuit.

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