CN201399574Y

CN201399574Y - Instrument for detecting modes and linear orders of thermocouples of continuous casting crystallizer

Info

Publication number: CN201399574Y
Application number: CN2009200724099U
Authority: CN
Inventors: 陈磊; 石云霄; 朱逸民; 陈嵩
Original assignee: Shanghai Baosteel Equipment Maintenance Co Ltd
Current assignee: Shanghai Baosteel Equipment Maintenance Co Ltd
Priority date: 2009-05-18
Filing date: 2009-05-18
Publication date: 2010-02-10
Anticipated expiration: 2019-05-18

Abstract

The utility model discloses an instrument for detecting modes and linear orders of thermocouples of a continuous casting crystallizer. The detecting instrument is characterized in that a wiring moduleis connected with a plurality of thermocouples; strobe signals emitted by a microprocessor are transmitted to a return circuit gating module; the return circuit gating module is connected with the wiring module and outputs high-frequency signals to the gated thermocouples; the output end of the return circuit gating module is connected with a signal comparison latching module; signal picking endsare clamped on the corresponding thermocouples and used for picking signals to input to the signal comparison latching module; the output end of the signal comparison latching module is connected with the signal processing module for processing and inputting the signals to the microprocessor; the microprocessor realizes communication according to the correlative detection parameters set by a datasetting module and through a COM communication module and a host computer; and the microprocessor realizes data storage and calling through a data storage module and displays the detected data through an information display module. The detecting instrument realizes the mode and linear order detection of thermocouples of the crystallizer, ensures the mounting correctness of thermocouples, and ensures the normal operation of the continuous casting manufacturing equipment.

Description

Continuous cast mold thermocouple state and line preface detector

Technical field

The utility model relates to a kind of continuous cast mold thermocouple state and line preface detector.

Background technology

For reducing the continuous casting bleed-out accident, sheet billet continuous casting steel mill immersions thermocouple in its continuous casting crystallizer copper plate in succession both at home and abroad, by monitoring crystallizer copper plate temperature, according to the generation of certain Mathematical Modeling or all kinds of control early warning system prevention bleed-out accident.In the practical application, continuous casting crystallizer copper plate need be implanted tens even tens thermocouples, to detect the temperature of copper plate of crystallizer difference, therefore in the installation and testing process of thermocouple, state and the line preface of determining thermocouple are most important, in case thermocouple erection sequence mistake occurs, will cause the The whole control early warning system normally to move.Therefore, must check affirmation to the thermocouple state and the line preface of installation.

In crystallizer thermocouple wire preface was detected, the direct-coupled method of the electric current of former employing was only applicable to the T type single line thermocouple of common port.And at present for improving the antijamming capability of thermocouple system, what all adopt is the thermocouple of twisted-pair feeder self-loop form, and each thermocouple all has two lines to connect, and is an independent temperature measuring unit, does not have common port between the thermocouple.And the thermocouple system that needs to detect is an equipment to be used of having finished installation, can not adopt the means of dismounting directly to measure, and therefore, adopts the direct-coupled method of electric current to have no idea its line preface is discerned.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of continuous cast mold thermocouple state and line preface detector, utilize this detector can realize the crystallizer thermocouple that has installed is carried out state and the detection of line preface, guarantee the correctness that thermocouple is installed, guaranteed the normal operation of continuous casting production equipment.

For solving the problems of the technologies described above, the utility model continuous cast mold thermocouple state and line preface detector comprise microprocessor, Wiring module, loop gating module, signal relatively latch module, picking up signal end, signal processing module, data memory module, information display module, data setting module and COM communication module; Described Wiring module connects some thermocouples, described microprocessor output gating signal is to the input of described loop gating module, the high-frequency signal output of described loop gating module connects described Wiring module, the detection signal output of described loop gating module connects the relatively input of latch module of described signal, described picking up signal end connects the relatively input of latch module of described signal, the output of described signal comparison latch module connects the input of described signal processing module, the output of described signal processing module connects described microprocessor, described microprocessor connects described data memory module and is used for storage or transfers data, described microprocessor connects described COM communication module and is used for and upper machine communication, the output of described data setting module connects described microprocessor and is used for the detected parameters setting, and the result of described microprocessor exports described information display module to.

For ease of detecting operation, above-mentioned picking up signal end adopts a wire clamp.

Above-mentioned data setting module also can adopt keyboard to realize the input of every detected parameters.

Detect on-the-spot environment for adapting to, this monitor also comprises a voice cue module, and the input of described voice cue module connects the audio signal output end of described microprocessor.

Because the utility model continuous cast mold thermocouple state and line preface detector have adopted technique scheme, promptly adopt Wiring module to connect some thermocouples, microprocessor sends gating signal to loop gating module, loop gating module connects Wiring module and exports high-frequency signal to the thermocouple of institute's gating, the output of coincidence circuit gating module connects relatively latch module of signal, the picking up signal end is sandwiched on the corresponding thermocouple and with pickoff signals and inputs to relatively latch module of signal, the signal relatively output of latch module connects the input of signal processing module and handles the back input microprocessor, microprocessor is set the relevant parameter that detects by the data setting module, microprocessor is realized communication by COM communication module and host computer, microprocessor is realized the data storage by data memory module and calls that microprocessor will detect data and show by information display module.This detector can be realized the crystallizer thermocouple that has installed is carried out state and the detection of line preface, guarantees the correctness that thermocouple is installed, and has guaranteed the normal operation of continuous casting production equipment.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and embodiments:

Fig. 1 is the module principle figure of the utility model continuous cast mold thermocouple state and line preface detector.

The specific embodiment

As shown in Figure 1, the utility model continuous cast mold thermocouple state and line preface detector comprise microprocessor 1, Wiring module 3, loop gating module 2, signal relatively latch module 4, picking up signal end 6, signal processing module 5, data memory module 10, information display module 9, data setting module 7 and COM communication module 8; Described Wiring module 3 connects some thermocouples 12, described microprocessor 1 output gating signal is to the input of described loop gating module 2, the high-frequency signal output of described loop gating module 2 connects described Wiring module 3, the detection signal output of described loop gating module 2 connects the relatively input of latch module 4 of described signal, described picking up signal end 6 connects the relatively input of latch module 4 of described signal, the output of described signal comparison latch module 4 connects the input of described signal processing module 5, the output of described signal processing module 5 connects described microprocessor 1, described microprocessor 1 connects described data memory module 10 and is used for storage or transfers data, described microprocessor 1 connects described COM communication module 8 and is used for and upper machine communication, the output of described data setting module 7 connects described microprocessor 1 and is used for the detected parameters setting, and the result of described microprocessor 1 exports described information display module 9 to.

For ease of detecting operation, above-mentioned picking up signal end 6 adopts a wire clamp.

Above-mentioned data setting module 7 also can adopt keyboard to realize the input of every detected parameters.

Detect for adapting to on-the-spot environment, under the situation of direct observed information display module, this monitor also comprises a voice cue module 11, and the input of described voice cue module 11 connects the audio signal output end of described microprocessor 1.

When the utility model continuous cast mold thermocouple state and the work of line preface detector, at first the signal line plug with some thermocouples is connected with Wiring module, and microprocessor control loop gating module circulates a high-frequency detection signal successively and delivers to each root thermocouple.For example: microprocessor instruction high-frequency detection signal is sent into the 1# thermocouple, sends into process according to signal, can at first judge this root thermocouple state, promptly this thermocouple whether normal, open circuit or short circuit.

And then, just can carry out the judgement of line preface, at this moment, pass through high-frequency signal in the 1# thermocouple wire, has stronger radio frequency generating ability, if this moment, the picking up signal end was clamped the 1# thermocouple, will there be a very little coupling capacitance between picking up signal end and the thermocouple, thereby make the picking up signal end also can obtain a feedback signal that frequency is identical with the high-frequency detection signal, this feedback signal input signal comparison latch module and high-frequency detection signal be back input signal processing module relatively, signal processing module does that signal amplifies and modulus handle after with the signal input microprocessor, microprocessor is handled signal and is then shown by information display module, making data by data memory module stores or calls, realize and upper machine communication by the COM communication module.

When the gating module gating 1# thermocouple of loop, what clamp as the picking up signal end is the 2# thermocouple, so just can't obtain the detection signal of 1# thermocouple, and then judging is false; This moment, loop gating module was pressed microprocessor instruction cut-out 1# thermocouple gating loop, connect 2# thermocouple gating loop successively, this moment, the picking up signal end just received the high-frequency signal on the 2# thermocouple, and produce corresponding feedback signal through signal comparison latch module, signal processing module handles accordingly the back to microprocessor, microprocessor provides the relevant detection data, pass through information display module, voice cue module, approach such as com communication module output " current demand signal pick up end clamps be the 2# thermocouple ", realize the detection of continuous cast mold thermocouple wire preface, will detect data filing by data memory module simultaneously and preserve.

Parameters in the testing process was set by the data setting module as gating cycle of thermocouple quantity, loop gating module etc.Microprocessor can be by loop gating module to some thermocouples ceaselessly scanning successively, the thermocouple that the testing staff is different with the gripping of picking up signal end can obtain this thermocouple state and line preface information, contrasts the installation site correctness that operation or work standard can be judged this thermocouple simultaneously.Guarantee the correctness that thermocouple is installed, guaranteed the normal operation of continuous casting production equipment.

Claims

1, a kind of continuous cast mold thermocouple state and line preface detector is characterized in that: this detector comprises microprocessor, Wiring module, loop gating module, signal relatively latch module, picking up signal end, signal processing module, data memory module, information display module, data setting module and COM communication module; Described Wiring module connects some thermocouples, described microprocessor output gating signal is to the input of described loop gating module, the high-frequency signal output of described loop gating module connects described Wiring module, the detection signal output of described loop gating module connects the relatively input of latch module of described signal, described picking up signal end connects the relatively input of latch module of described signal, the output of described signal comparison latch module connects the input of described signal processing module, the output of described signal processing module connects described microprocessor, described microprocessor connects described data memory module and is used for storage or transfers data, described microprocessor connects described COM communication module and is used for and upper machine communication, the output of described data setting module connects described microprocessor and is used for the detected parameters setting, and the result of described microprocessor exports described information display module to.

2, continuous cast mold thermocouple state according to claim 1 and line preface detector, it is characterized in that: described picking up signal end is a wire clamp.

3, continuous cast mold thermocouple state according to claim 1 and line preface detector, it is characterized in that: described data setting module is a keyboard.

4, according to claim 1,2 or 3 described continuous cast mold thermocouple states and line preface detector, it is characterized in that: this monitor also comprises a voice cue module, and the input of described voice cue module connects the audio signal output end of described microprocessor.