CN216526175U

CN216526175U - Resistive load life monitoring system of JL contactor

Info

Publication number: CN216526175U
Application number: CN202122485389.1U
Authority: CN
Inventors: 吴风波; 杨英华; 刘安全; 郑邵信
Original assignee: Guizhou Zhenhua Qunying Electric Appliance Co Ltd(state-Owned No891 Factory)
Current assignee: Guizhou Zhenhua Qunying Electric Appliance Co Ltd(state-Owned No891 Factory)
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-13
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a JL contactor resistive load life monitoring system. The intelligent control system comprises a central processing module, wherein the central processing module is respectively connected with an analog quantity conversion module, an alternating voltage acquisition module, a touch screen control module, an Ethernet switching module and a connecting terminal module. The utility model can meet the monitoring requirement of the open-close state of the A/B/C three-phase corresponding contact of the contactor in the GJB1461A-2017 for the contactor life test; the system is independently developed, so that the monitoring cost of a company can be reduced; the method is suitable for monitoring the 115V alternating current load and fills the technical blank of the company.

Description

Resistive load life monitoring system of JL contactor

Technical Field

The utility model relates to the technical field of contactor monitoring, in particular to a resistive load life monitoring system of a JL contactor.

Background

According to the requirement in the GJB1461A-2017, the states of the contacts corresponding to the A/B/C three phases of the contactor in the life test process are monitored, and the monitoring means mainly judges the on-off condition of the contacts by monitoring the voltage drop value between the contacts corresponding to the A/B/C three phases of the contactor (the voltage drop of the contacts of the contactor is monitored to be not more than 10% of the open-circuit voltage within at least 40% of the time of each closing and opening). The manufacturers of the same companies have a test means for monitoring the service life test of the contactor, and the companies cannot monitor the service life test according to the indexes specified in GJB1461A-2017, adopt indicator lamps for monitoring and have no competitive advantage in the market competitive environment.

Although a company already provides a power supply, a high-temperature low-pressure environment and a load support for an alternating current 115V load product, the on-off state of the A/B/C three-phase corresponding contact of the contactor is monitored by the equipment mainly by an indicator light, and in the monitoring process of the indicator light, because a tester cannot observe the state constantly and cannot record the A/B/C three-phase corresponding contact of the contactor when the A/B/C three-phase corresponding contact fails, the method has a defect in the aspect of test reliability.

Disclosure of Invention

The utility model aims to provide a JL contactor resistive load life monitoring system. The protection circuit can protect overcurrent, undercurrent and short circuit of a direct current circuit, has high response speed and adjustable voltage and current protection ranges.

The utility model adopts the following technical scheme to realize the purpose of the utility model:

a JL contactor resistance load life monitoring system comprises a central processing module, wherein the central processing module is respectively connected with an analog quantity conversion module, an alternating voltage acquisition module, a touch screen control module, an Ethernet exchange module and a connecting terminal module.

The JL contactor resistive load life monitoring system further comprises a power supply module, wherein the power supply module is divided into an alternating current power supply module, a 24V direct current power supply module and a 48V direct current power supply module, the 24V direct current power supply module is connected with the central processing module, the analog quantity conversion module and the alternating current voltage acquisition module, and the 48V direct current power supply module is connected with the coil power supply module.

In the resistive load life monitoring system of the JL contactor, the coil power supply module is connected with the coil on-off control module.

The resistive load life monitoring system of the JL contactor is characterized in that the connecting terminal module is connected with an external voltage acquisition line.

Compared with the prior art, the utility model has the following characteristics:

1. the monitoring system can meet the requirement of monitoring the on-off state of a contact corresponding to a contactor A/B/C three-phase in a GJB1461A-2017 for a contactor life test;

2. the monitoring system is independently developed, so that the monitoring cost of a company can be reduced;

3. the system can be suitable for monitoring the 115V alternating current load and fills the technical blank of a company.

Drawings

Fig. 1 is a circuit schematic diagram of the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Examples are given. The JL contactor resistive load life monitoring system comprises a central processing module 1, wherein the central processing module 1 is respectively connected with an analog quantity conversion module 2, an alternating voltage acquisition module 3, a touch screen control module 4, an Ethernet switching module 5 and a connecting terminal module 11.

The power supply module is divided into an alternating current power supply module 6, a 24V direct current power supply module 7 and a 48V direct current power supply module 8, the 24V direct current power supply module 7 is connected with the central processing module 1, the analog quantity conversion module 2 and the alternating current voltage acquisition module 3, and the 48V direct current power supply module 8 is connected with the coil power supply module 9.

The coil power supply module 9 is connected with the coil on-off control module 10.

The connection terminal module 11 is connected to an external voltage collecting line.

The working principle is as follows: the utility model mainly realizes the monitoring function of the service life test of the AC contactor product by combining eight modules, namely a central processing module 1, an analog quantity conversion module 2, a power supply module, a touch screen control module 4, an AC voltage acquisition module 3, a connecting terminal module 11, an Ethernet exchange module 5 and a coil on-off control module, and has the following specific principle:

1) the central processing module 1 is a core part of the monitoring system, and mainly adopts Simatic S7-200 CPU ST30 as a central processing unit, can analyze and process digital signals acquired in the analog conversion module 2, and provides an output time program for coil on-off, so that the on-off function with continuously adjustable speed is realized, and meanwhile, the central processing module 1 plays a role in transmitting data to the touch screen module for man-machine interaction;

2) the analog quantity conversion module 2 mainly adopts Simatic S7-200 EM AM06 as the core part of the module, the function of the module is to carry out data acquisition on the direct current signal of 0-10V output by the alternating current voltage acquisition module 3, the acquired data is converted into digital quantity according to a specific formula by an internal program, and then the digital quantity is transmitted to the central processing module 1 for analysis and processing;

3) the power supply module is divided into three parts: the system comprises an alternating current power supply module 6, a 24V direct current power supply module 7 and a 48V direct current power supply module 8, wherein the alternating current power supply module 6 mainly provides 220V alternating current voltage for equipment and provides an energy source for a direct current power supply part; the direct current power supply part is divided into a 24V direct current power supply module 7 and a 48V direct current power supply module 8, wherein the 24V direct current power supply module 7 mainly provides stable voltage for the central processing module 1, the analog quantity conversion module 2, the alternating current voltage acquisition module 3 and the like, and the 48V direct current power supply module 8 mainly provides high-voltage input for the coil power supply module 9; the coil power supply module 9 mainly adopts an adjustable voltage conversion module to realize the function of continuously adjusting the coil voltage, thereby providing the coil voltage for the tested contactor;

4) the touch screen control module 4 and the MT8102IE touch screen control module 4 mainly play a role in human-computer interaction with the monitoring module, function buttons such as start, stop and reset are arranged on the interface, digital input control interfaces such as on-time, off-time and preset times are also arranged on the interface, and the touch screen control module also has display elements such as failure data display, on-off indicator lamps and program operation indicator lamps;

5) the alternating voltage acquisition module 3 mainly acquires voltage data of two ends of a contact A/B/C three-phase corresponding contact in the switching-on and switching-off process by using a CHX-150V/SP1 module, and because the voltage of the two ends of the contact A/B/C three-phase corresponding contact is the alternating voltage, the alternating voltage is converted into a 0-10V direct voltage signal (linear proportion) by an internal circuit, and the input data is provided for the analog quantity conversion module 2;

6) the connection terminal module 11 is mainly connected with an external voltage acquisition line by adopting a JONHON JDE15SB1J connection terminal, so that alternating voltages at two ends of contacts corresponding to the A/B/C three phases of the contactor are transmitted to the alternating voltage acquisition module 3, and meanwhile, when the central processing module 1 controls external disconnection, an electric signal is transmitted to a tested contactor through the connector, so that the disconnection function is realized;

7) the Ethernet switching module 5 mainly adopts a Siemens SIMATUC NET CSM 1277 module to connect the central processing module 1, the touch screen and the external programming equipment to a network port, thereby realizing synchronous programming and data transmission;

8) the coil on-off control module 10 controls the on-off of the output end by controlling the input end of the JGX-QY16M/028Y solid relay because the tested contactor, the DPX6012S power supply and the JGX-QY16M/028Y solid relay output end are in a series state, thereby controlling the on-off of the tested contactor.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a resistive load life monitoring system of JL contactor, its characterized in that includes central processing module (1), and central processing module (1) is connected with analog quantity conversion module (2), alternating voltage acquisition module (3), touch-sensitive screen control module (4), ethernet exchange module (5) and connecting terminal module (11) respectively.

2. The JL contactor resistive load life monitoring system of claim 1, characterized in that: the power supply system is characterized by further comprising a power supply module, wherein the power supply module is divided into an alternating current power supply module (6), a 24V direct current power supply module (7) and a 48V direct current power supply module (8), the 24V direct current power supply module (7) is connected with the central processing module (1), the analog quantity conversion module (2) and the alternating current voltage acquisition module (3), and the 48V direct current power supply module (8) is connected with the coil power supply module (9).

3. The JL contactor resistive load life monitoring system of claim 2, characterized in that: the coil power supply module (9) is connected with the coil on-off control module (10).

4. The JL contactor resistive load life monitoring system of claim 1, characterized in that: the connecting terminal module (11) is connected with an external voltage acquisition line.