CN206177484U - Tungsten rhenium thermocouple examination data acquisition system - Google Patents

Abstract

The utility model relates to a tungsten rhenium thermocouple examination data acquisition system, include: main website and the slave station connected through process field bus, wherein the main website include through process field bus and the interactive one type of main website of slave station with can be right setting of process field bus and the class II main website that communicates with one type of main website, the slave station including respectively with standard infrared temperature collection system and quilt that process field bus connects are examined thermocouple current potential collection system. The utility model discloses a tungsten rhenium thermocouple examination data acquisition system, the high temperature tungsten rhenium thermocouple automatic verification system that is applicable to that can be good has characteristics such as high -speed, high efficiency, high automation degree to can carry out data acquisition and demarcation at 800 DEG C ~2300 DEG C within ranges, it is interior to the blank in 1500 DEG C ~the 2300 DEG C temperature ranges to have filled present trade.

Description

Wolfram rhenium heat electric couple examines and determine data collecting system

Technical field

The utility model is related to data collecting system, is concretely the Wolfram rhenium heat electric couple of Kernel-based methods fieldbus bus Calibrating data collecting system.

Background technology

In such as various industrial trades such as metallurgy, oil, chemical industry, machinery, Aero-Space, the measurement to temperature suffers from ten Divide important meaning.Probably temperature survey can be divided into two classes according to the different of metering system at present, a class is that contact is surveyed Amount, another kind of is non-contact measurement.For contact type measurement, thermocouple is to use more temperature-measuring element.Thermocouple It is a kind of common temperature measurement element based on thermoelectric effect principle, has been widely used in industry-by-industry, it is special It is not such as metallurgical, Aero-Space cause in some high temperature measurement environment.But for thermocouple itself, according to country Metrological regulation, its dispatch from the factory or using a period of time after, it is necessary to periodically be examined and determine accordingly it.At present, it is all of The calibration operation of thermocouple is required for what is carried out according to the content of People's Republic of China's national measurement technical specification defined, presses According to different specifications, to determining the operating temperature of thermocouple respectively at 300 DEG C~2200 DEG C, 20 DEG C~2800 DEG C and 0~1500 DEG C etc., but the calibrating work in for 0~1500 DEG C of specification only to Wolfram rhenium heat electric couple working range at 0~1500 DEG C It is illustrated, and is illustrated without related specification for the demarcation higher than 1500 DEG C, once in 1988 by state's family livehood Amount department entrusts Insti. of Measuring and testing technology. Liaoning Prov. to draft《JJG576-1988 work is examined and determine with Wolfram rhenium heat electric couple and advised Journey》, calibrating mode of the code to Wolfram rhenium heat electric couple at 0~2300 DEG C carried out corresponding explanation, but in 2007 by specification 《JJF 1176-2007》Replaced, the calibrating specification for 1500~2300 DEG C is blank out from that time；But W-Re Thermocouple is but often used in the range of this, then how to being demarcated just using the Wolfram rhenium heat electric couple in the range of this It is to need to solve, which type of standard it uses, and come specification, its calibrating is also to need research.

Domestic some research institutes and enterprise are all based on Wolfram rhenium heat electric couple for the research of Wolfram rhenium heat electric couple verification system Working environment is less than 1500 DEG C, does not have substantially for the research in 1500 DEG C~2300 DEG C this temperature ranges and report, special Be not combining advanced computer, the technology such as Automated condtrol with high speed, high efficiency, automaticity high, antioxygen Change the Wolfram rhenium heat electric couple automatic calibrator of the characteristics such as function.

PROFIBUS is corresponding uppercase combination abbreviation in Process Field BUS, and referred to as process-field is total Line.PROFIBUS buses are towards factory automation and a kind of automatic international live bus standard of process.It is extensive Be applied in modern industry, such as automated manufacturing (automobile making, warehousing system), cross process automation and (petrochemical industry, make Paper and textile industry etc.), power electronics, traffic administration and lived in the industries such as related building automatic to us.Utilize PROFIBUS bus standards can realize transmitting the data transfer of the equipment rooms such as sensor, actuator, PLC.

Utility model content

The utility model provide a kind of Wolfram rhenium heat electric couple examine and determine data collecting system, with set up thermocouple 1500 DEG C~ Data acquisition modes in 2300 DEG C of working environment, fill up related industry blank.

The utility model Wolfram rhenium heat electric couple examines and determine data collecting system, including：By Process FieldbusROFIBUS (PROFIBUS) The main website and slave station of connection, wherein main website include the class main website that is interacted with slave station by the Process FieldbusROFIBUS and can be to institute State Process FieldbusROFIBUS set and with two class main websites of a class master station communication, the slave station include respectively with the process-field The standard IR temperature collecting device and tested thermocouple harvester of bus connection.One class main website realize with to slave station The functions such as control, data exchange, parameter setting, diagnosis, two class main websites can be communicated with a class main website, and can be existing to process Field bus are configured accordingly, parameter initialization etc..From the temperature survey principle of thermocouple, in measurement electric thermo-couple temperature When measured potential be thermocouple measurement end and reference edge point-to-point transmission potential difference.The potential is by described tested warm Galvanic couple potential harvester is gathered, and its structure can be realized using existing device.The system is entered using dry practice method to thermocouple Row calibrating, therefore the data acquisition of thermocouple is carried out using standard IR temperature collecting device.Standard IR temperature collecting device Temperature-measuring range be 250 DEG C to 3000 DEG C, disclosure satisfy that the data acquisition in the range of required 2300 DEG C.

Specifically, a described class main website is PC or PLC device.The effect of one class main website is both central controller, one Can there are multiple class main websites, the multiple slave stations of control in individual system.

Specifically, two described class main websites include the control list being connected with the Process FieldbusROFIBUS by network communication card Unit.Two class main websites have setting tributary address, configuration, the function such as system monitoring, can comprising as programmable device, configuration equipment and/or The equipment such as PC.

Optionally, described control unit is also associated with printing equipment, and printing archive is carried out with to corresponding data.

On this basis, the assay furnace oven temperature control device being connected with Process FieldbusROFIBUS, inspection are also included in the slave station Rate of temperature change should after determining stove constant temperature<=2 DEG C/min, assay furnace oven temperature control device is used for the furnace temperature of control verification stove, makes Proving temperature is ± 5 DEG C with the design temperature deviation of assay furnace.

Further, warning system is provided with the assay furnace oven temperature control device, when temperature control occurs abnormal Carry out alarm.Warning system can use existing conventional frame mode, such as audible alarm or sound and light alarm.

Wolfram rhenium heat electric couple of the present utility model examines and determine data collecting system, can be good suitable for high temperature Wolfram rhenium heat electric couple Automatic verification system, with characteristics such as high speed, high efficiency, automaticities high, and can enter in the range of 800 DEG C~2300 DEG C Row data acquisition and demarcation, have filled up in current industry to the blank in 1500 DEG C~2300 DEG C temperature ranges.

Specific embodiment with reference to embodiments, remakes further specifically to the above of the present utility model It is bright.But this scope for being interpreted as the above-mentioned theme of the utility model should not be only limitted to following example.It is new this practicality is not departed from In the case of the above-mentioned technological thought of type, according to various replacements or change that ordinary skill knowledge and customary means are made, Should be included in the range of the utility model.

Brief description of the drawings

Fig. 1 is the block diagram that the utility model Wolfram rhenium heat electric couple examines and determine data collecting system.

Specific embodiment

Wolfram rhenium heat electric couple calibrating data collecting system of the present utility model, is connected by Process FieldbusROFIBUS as shown in Figure 1 There are main website and slave station.Wherein main website includes a class main website and two class main websites, and a described class main website is PLC device, by process Fieldbus is interacted with slave station.The effect of one class main website is both central controller, can there is multiple class main websites in a system, The multiple slave stations of control.Two class main websites include the control unit being connected with the Process FieldbusROFIBUS by network communication card, and The printing equipment being connected with control unit.Two class main websites have the functions such as setting tributary address, configuration, system monitoring, can include Such as programmable device, configuration equipment and/or PC equipment.Two class main websites can to the Process FieldbusROFIBUS set and with a class master Stand communication.

The slave station includes the standard IR temperature collecting device that is connected with the Process FieldbusROFIBUS respectively and tested Thermocouple harvester, and the assay furnace oven temperature control device being connected with Process FieldbusROFIBUS, in assay furnace furnace temperature control Warning system is provided with device processed, alarm is carried out when temperature control occurs abnormal.Warning system can use existing routine Frame mode, such as audible alarm or sound and light alarm.

In equipment choice, a class main website selects Siemens S7-300 series of PLC equipment.Its CPU model 319-3DP Type, possesses the interfaces such as MPI (information transmission application programming interfaces), RS485, can build Kernel-based methods fieldbus (PROFIBUS) data collecting system, maximum transfer speed is 12M/s.

The control unit of two class main websites is used grinds the embedded box ARK-5260 industrial computers of China, ARK-5260 industrial control computer structures Closely, the sealing structure run using fan-free, supports the Intel CPU of 1.66GHz, with 5 USB2.0 ports, branch 4 RS-232/422/485 interfaces with automatic flow control are held, built-in 1 PCI-e and 2 PCI expansion slot, PC expands Panel uses rubber antidetonation.By installing corresponding software on industrial machine is answered, such as WINCC, FIX, power control configuration software, with And DLL software STEP7 etc. comes the hardware configuration of implementation process fieldbus bus and control etc..

, from the CP5613 type network interface cards of Siemens Company, CP5613 types net is with the mistake based on pci bus for network communication card Journey Local Bus Interface card, it is mainly used in for industrial computer being connected to Process FieldbusROFIBUS.By by CP5613 type network interface cards Be installed in the PCI expansion slots of ARK-5260 industrial computers, it is possible to achieve using in industrial computer access procedure fieldbus as main Station uses.

The thunder Thailand marathon that standard IR temperature collecting device in slave station is produced from U.S. Raytek (Lei Tai) company FA series of IR temperature measurers, the infrared radiation thermometer possesses RS485 serial communication interfaces, may be connected to Process FieldbusROFIBUS.

In tested thermocouple harvester thermoelectricity is realized by 2010 type, seven Semi-digital multimeters of Keithley The measurement of even thermoelectrical potential.But because digital multimeter only has RS232 and GBIP communication interfaces, it is impossible to directly enter with Process FieldbusROFIBUS Row communication.Therefore docking for digital multimeter and Process FieldbusROFIBUS must be realized by corresponding communication interface.Use monolithic Machine+protocol integrated test system chip realizes the reading to the measurement result of digital multimeter and is sent to Process FieldbusROFIBUS.It is wherein single Piece machine selects AT89S52 models, on a single chip with 8 bit CPUs and in-system programmable components Flash so that AT89S52 single-chip microcomputers The solution of flexible, super efficient high can be provided for various embedded Control application systems.

Rate of temperature change after assay furnace oven temperature control device control verification stove constant temperature<=2 DEG C/min, and make proving temperature It it is ± 5 DEG C with the design temperature deviation of assay furnace.

System of the present utility model realizes RS232 interfaces to Process FieldbusROFIBUS, and RS485 interfaces are to process-field The corresponding protocol conversion of bus so that the equipment for not possessing Process FieldbusROFIBUS interface can facilitate access procedure fieldbus, Data acquisition and demarcation are carried out in the range of 800 DEG C~2300 DEG C to thermocouple, filled up in current industry to 1500 DEG C~ Blank in 2300 DEG C of temperature ranges.

Claims (6)

1. Wolfram rhenium heat electric couple examines and determine data collecting system, and its feature includes：The main website and slave station connected by Process FieldbusROFIBUS, Wherein main website is included the class main website interacted with slave station by the Process FieldbusROFIBUS and the Process FieldbusROFIBUS can be set Put and with two class main websites of a class master station communication, the slave station include it is red with the standard that the Process FieldbusROFIBUS is connected respectively Outer temperature collecting device and tested thermocouple harvester.

2. Wolfram rhenium heat electric couple as claimed in claim 1 examines and determine data collecting system, it is characterized by：A described class main website is PC Machine or PLC device.

3. Wolfram rhenium heat electric couple as claimed in claim 1 examines and determine data collecting system, it is characterized by：Two described class main websites include The control unit being connected with the Process FieldbusROFIBUS by network communication card.

4. Wolfram rhenium heat electric couple as claimed in claim 3 examines and determine data collecting system, it is characterized by：Described control unit is also connected with There is printing equipment.

5. the Wolfram rhenium heat electric couple as described in one of Claims 1-4 examines and determine data collecting system, it is characterized by：In the slave station Also include the assay furnace oven temperature control device being connected with Process FieldbusROFIBUS.

6. Wolfram rhenium heat electric couple as claimed in claim 5 examines and determine data collecting system, it is characterized by：The assay furnace Control for Kiln Temperature Warning system is provided with device.