CN106706084A - General remote diagnosis system and method for natural gas ultrasonic flowmeter - Google Patents

General remote diagnosis system and method for natural gas ultrasonic flowmeter Download PDF

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Publication number
CN106706084A
CN106706084A CN201710095076.0A CN201710095076A CN106706084A CN 106706084 A CN106706084 A CN 106706084A CN 201710095076 A CN201710095076 A CN 201710095076A CN 106706084 A CN106706084 A CN 106706084A
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CN
China
Prior art keywords
data
ultrasonic flowmeter
natural gas
flow
flows
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CN201710095076.0A
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Chinese (zh)
Inventor
徐�明
张玮健
陆玉城
裴勇涛
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中国石油化工股份有限公司天然气分公司计量研究中心
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Priority to CN201710095076.0A priority Critical patent/CN106706084A/en
Publication of CN106706084A publication Critical patent/CN106706084A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume
    • G01F25/0007Testing or calibrating apparatus for measuring volume, volume flow or liquid level, or for metering by volume for measuring volume flow

Abstract

The invention discloses a general remote diagnosis system and method for a natural gas ultrasonic flowmeter. The method comprises the following steps of: collecting flow data by a flow computer from an ultrasonic flowmeter through an interface communication protocol, and centrally collecting the flow data through a field industrial bus protocol; and setting up a standard threshold of a flow parameter, comparing and analyzing the parameter of the flow data and the standard threshold of the flow parameter, and diagnosing the ultrasonic flowmeter corresponding to the flow data according to comparing and analyzing results. According to the general remote diagnosis system and method for the natural gas ultrasonic flowmeter, the flowmeter and chromatographic analyzer related data are read through the field industrial bus protocol carried by the flow computer by utilizing a standard data interface of the natural gas flow computer, so that the general remote diagnosis technology of different types of natural gas ultrasonic flowmeters from different factories is realized, the generality of the remote diagnosis technology of the gas ultrasonic flowmeters is improved, the cost is saved, and the technical shielding is solved, and the enterprise management level is improved.

Description

Natural gas ultrasonic flowmeter Universal Remote diagnostic system and method

Technical field

The present invention relates to gas metering technical field, more particularly to natural gas ultrasonic flowmeter Universal Remote diagnostic system And method.

Background technology

At present, gas ultrasonic flowmeter with its accurate measurement, range ratio is wide, intelligence degree is high the advantages of turn into domestic and international Main measuring instrument in long distance gas pipeline gas transmission station natural gas Trade Measures, such as domestic transfering natural gas from the west to the east, river gas east are sent, Shan capital Equal extensive use, sets as the key of natural gas Trade Measures in the long distance gas pipelines such as pipeline and each provincial gas distributing system Standby, the service condition of ultrasonic flowmeter is directly connected to the economic interests of Trade Measures both sides.In order to strengthen ultrasonic flowmeter Management, it is ensured that the stabilization of metering performance, it is necessary to periodically carry out diagnosis maintenance to flowmeter, due to long distance pipeline natural gas transmission station " website is more, distributed areas are wide ", diagnostic techniques requires technical staff higher, and large-scale maintenance and troubleshooting are managing concentratedly Professional contingent based on, the maintenance response time is long, the actual conditions such as on-site maintenance cost is high, current each pipeline company it is general by SCADA system is diagnosed by remote Diagnosis Technology to gas metering ultrasonic flowmeter, meets the production management need of enterprise Will.But there is a problem of following 3 aspects:

1. the ultrasonic flowmeter of onsite application is produced by different manufacturers and supplied, and the diagnostic software that different manufacturers are used is mutual not General, data-interface disunity, or even some producers not yet develop remote diagnostic center at present, to management and using causing not Just.

2. the conventional natural gas ultrasonic flowmeter remote Diagnosis Technology for relying on natural gas line SCADA system to build, due to SCADA system between each natural gas line is independently built, it is therefore desirable to server realization is respectively provided with each SCADA system Remote Diagnosis System, and remote diagnosis cannot be carried out for some natural gas stations that cannot access SCADA system, therefore deposit Development investment is big, management dispersion, the problems such as data sharing is poor, personal management difficulty is big.

3. at present, it is domestic ultrasonic flowmeter be generally foreign brand name, producer does not open to the outside world remote diagnostic center, one As need to use corporate payments maintenance cost rely on producer carry out diagnosis maintenance, increased the operating cost of enterprise.

The content of the invention

In view of this, it is necessary to one kind is provided and can solve the problem that existing diagnostic software poor universality, data-interface disunity Problem and the shielding of producer technical protection, software generic and function expansibility difference the problems such as natural gas ultrasonic flowmeter it is general Remote diagnosis system and method.

The present invention provides a kind of natural gas ultrasonic flowmeter Universal Remote diagnostic system, and the natural gas ultrasonic flowmeter leads to Include data acquisition subsystem and diagnostic analysis subsystem with remote diagnosis system;

The data acquisition subsystem includes ultrasonic flowmeter, one-level storage terminal, secondary storage terminal, control centre's clothes Business device and cloud database;Interface communication module is provided between the ultrasonic flowmeter, one-level storage terminal;The one-level is deposited Bus communication module is provided between storage terminal, secondary storage terminal, is set between the secondary storage terminal, control centre's server There is local area network communications module, public network communication module is provided between control centre's server and cloud database;

The ultrasonic flowmeter stores terminal communication and is connected by interface communication module and one-level, for by communication interface Cable gathers the data on flows of ultrasonic flowmeter;

One-level storage terminal is connected by bus communication module with secondary storage terminal communication, for by data on flows Data on flows is transferred to by tertiary storage terminal by Ethernet;

The secondary storage terminal is connected by local area network communications module with control centre's server communication, for by flow Data are transferred to the control centre's server at pipeline production run by pipeline internal lan;

Control centre's server is communicated to connect by public network communication module and cloud database, for by data on flows Cloud database is uploaded to by public network path.

A kind of natural gas ultrasonic flowmeter Universal Remote diagnostic method, the natural gas ultrasonic flowmeter Universal Remote diagnosis Method includes herein below:

Data on flows is gathered from ultrasonic flowmeter by interface communication protocol, and will be flowed by fieldindustrybus agreement Amount data carry out concentration and collect;The level threshold value of flow parameter is set, by the parameter of data on flows and the standard threshold of flow parameter Value is compared analysis, and the corresponding ultrasonic flowmeter of the data on flows is diagnosed according to comparative analysis result.

Natural gas ultrasonic flowmeter Universal Remote diagnostic system of the present invention and method, it utilizes Counting Natural Gas Flowrate Machine standard data interface, it is related that the fieldindustrybus agreement carried by flow computer reads flowmeter, chromatograph Data, realize each producer and the general remote Diagnosis Technology of type natural gas ultrasonic flowmeter, improve gas ultrasound flow Remote Diagnosis Technology versatility is counted, cost has been saved, has been solved technology shielding, improves enterprise management level.

Specific embodiment

In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated, it will be appreciated that the specific embodiments described herein are merely illustrative of the present invention, is not used to Limit the present invention.

The embodiment of the present invention provides natural gas ultrasonic flowmeter Universal Remote diagnostic system, the natural gas ultrasonic flowmeter Universal Remote diagnostic system includes data acquisition subsystem and diagnostic analysis subsystem;

The data acquisition subsystem includes ultrasonic flowmeter, one-level storage terminal, secondary storage terminal, control centre's clothes Business device and cloud database;Interface communication module is provided between the ultrasonic flowmeter, one-level storage terminal;The one-level is deposited Bus communication module is provided between storage terminal, secondary storage terminal, is set between the secondary storage terminal, control centre's server There is local area network communications module, public network communication module is provided between control centre's server and cloud database;

The ultrasonic flowmeter stores terminal communication and is connected by interface communication module and one-level, for by communication interface Cable gathers the data on flows of ultrasonic flowmeter;

One-level storage terminal is connected by bus communication module with secondary storage terminal communication, for by data on flows Data on flows is transferred to by tertiary storage terminal by Ethernet;

The secondary storage terminal is connected by local area network communications module with control centre's server communication, for by flow Data are transferred to the control centre's server at pipeline production run by pipeline internal lan;

Control centre's server is communicated to connect by public network communication module and cloud database, for by data on flows Cloud database is uploaded to by public network path.

Wherein, the one-level storage terminal is flow computer, and the interface communication module is RS485 interfaces, described total Line communication module is Modbus/TCP network communication modules, and Modbus address tables are increased in the flow computer, makes its instant Flowmeter, component analysis instrument operational factor are read, and is stored in the register that flow computer is specified;The Modbus agreements It is a kind of all-purpose language being applied on electronic controller.By this agreement, controller is each other, controller is via network (such as Ethernet) can communicate and miscellaneous equipment between, and it has become a kind of current industry standard, by it, different vendor The control device of production can be linked to be industrial network, carry out Centralized Monitoring.This protocol define a controller and can recognize and use Message structure, communicated by which kind of network but regardless of them.It describes a controller request and accesses other How the process of equipment, respond the request from miscellaneous equipment, and how to detect mistake and record.Initial data storage is super In acoustic wave flow meter and chromatographic register, accessing data will in advance specify the address of register.

The flow computer of each gas transmission station is carried out by 485 communication protocols to the real time data of each ultrasonic flowmeter of measuring station Collection and the calculating of flow, the data of collection and the result that calculates according to Modbus/TCP network communication protocols, by live work Industry bus carries out the treatment such as display, encryption, transmission and the storage of data in uploading to secondary storage terminal.Data letter after encryption Breath is uploaded in the control centre's server at the pipeline production run of distal end by each pipeline internal lan, and staff can So that by the ruuning situation of online each station flowmeter of B/S terminals real-time monitoring, the data to each station flowmeter are looked into Ask and analyze.The control centre's server secondary storage terminal respectively stood and pipeline production run simultaneously at is by with cable broadband The data of collection and the result for calculating are uploaded to set up on Ali's cloud natural by public network for mode or wireless 4G modes Stored on qi leel incorporated business cloud and processed (i.e. cloud database).Each substation can be by online B/S mode realities When data transfer on cloud to local, realize the real-time diagnosis of the ultrasonic flowmeter to each station and each pipeline and monitor each station The ruuning situation of flowmeter.

According to the network topology structure of natural gas ultrasonic flowmeter Universal Remote diagnostic system, its each pipeline that will be detected On real time data upload to cloud database, the ultrasonic flowmeter real time data letter of the management from each station of diagnostic data The data messages such as breath, historical data information, basic data information, while also being supported and service for other departments provide data.

The data acquisition subsystem utilizes device through computer measurement standard data interface, is carried by flow computer Modbus TCP/IP communication modes read flowmeter, chromatograph related data, realize each producer and type natural gas The general remote Diagnosis Technology of ultrasonic flowmeter, improve gas ultrasonic flowmeter remote Diagnosis Technology versatility, saved into Originally, solve technology shielding, improve enterprise management level.

The diagnostic analysis subsystem includes threshold setting module and data com-parison and analysis module, and the threshold value sets mould Block, cloud database are communicated to connect with data analysis comparison module respectively;

The threshold setting module is used to set the level threshold value of flow parameter;

The data analysis comparison module is used for from high in the clouds downloading flow data, and the parameter of data on flows and flow are joined Several level threshold values is compared analysis, and the corresponding ultrasonic flowmeter of the data on flows is examined according to comparative analysis result It is disconnected.

Wherein, the data analysis comparison module includes velocity of sound analytic unit, signal quality analytic unit, gain values analysis Unit, Analysis signal-to-noise ratio (SNR) unit and flow speed characteristic analytic unit.Specifically, the velocity of sound analytic unit is using online gas phase Chromatograph analyzes gas component, the theoretical velocity of sound of natural gas is calculated according to AGA10 reports, to the velocity of sound detected by flowmeter It is compared with the theoretical velocity of sound, if difference is more than 0.25%, illustrates to show that flowmeter has problem.

Signal quality shows the acceptance level of pulse, and signal quality value generally should be close to 100%, therefore when signal quality When value is less than 25%, the signal quality analytic unit judges that ultrasonic flowmeter has problem, is typically primarily due to flowmeter Probe booty is caused.

Yield value refer to will to the signal enhancing that receives how much, the oscillator intensity of needs is can be only achieved, if signal intensity Decay, gain is strengthened.Requirement of the probe of different flow meter different size to the yield value upper limit is different, and specific targets will be referring to super Sonic flowmeter associative operation handbook or specification.By flowmeter, producer is judged to index, if yield value exceedes producer The required upper limit, then the tested flowmeter of the gain values analysis unit judges there is problem.

Signal to noise ratio refers to the numerical value ratio of the signal and background noise for receiving, and calibrating technique stream is may determine that by signal to noise ratio Whether there is noise jamming in journey, when signal to noise ratio is less than 500, interference of the noise on flowmeter can influence the accuracy of metering, Need to carry out noise to flow to search and rectify and improve, now the tested flowmeter of the Analysis signal-to-noise ratio (SNR) unit judges has problem.

The flow speed characteristic analytic unit is used to monitor characterisitic parameter of the natural gas by ultrasonic flow rate timing, major parameter There are section coefficient, eddy-currents, laterally symmetry, stream, turbulent flow.Different parameters shows different flow characteristics, design parameter Index request will give operation manual or specification with reference to each producer.

By velocity of sound analytic unit, signal quality analytic unit, gain values analysis unit, Analysis signal-to-noise ratio (SNR) unit and stream Whether the real-time monitoring of fast specificity analysis unit, be a homogeneous turbulence when judging natural gas by flowmeter, if any parameter is super Setting is crossed, then illustrates that ultrasonic flowmeter installation has problem.

For above-mentioned natural gas ultrasonic flowmeter Universal Remote diagnostic system, the present invention also provides a kind of natural gas hypersonic flow Gauge Universal Remote diagnostic method, the natural gas ultrasonic flowmeter Universal Remote diagnostic method includes herein below:

Data on flows is gathered from ultrasonic flowmeter by interface communication protocol, and will be flowed by fieldindustrybus agreement Amount data carry out concentration and collect;The level threshold value of flow parameter is set, by the parameter of data on flows and the standard threshold of flow parameter Value is compared analysis, and the corresponding ultrasonic flowmeter of the data on flows is diagnosed according to comparative analysis result.

Specifically, the flow computer of each gas transmission station passes through 485 communication protocols to the real-time of each ultrasonic flowmeter of measuring station Data are acquired the calculating with flow, and the data of collection and the result of calculating are led to according to Modbus/TCP network communication protocols Crossing during fieldindustrybus upload to secondary storage terminal carries out the treatment such as display, encryption, transmission and the storage of data.After encryption Data message the control centre's server at the pipeline production run of distal end is uploaded to by each pipeline internal lan, pipe Control centre's server at line production run by with cable broadband mode or wireless 4G modes by the data for gathering and calculating Result cloud database is uploaded to by public network.

Natural gas ultrasonic flowmeter Universal Remote diagnostic method of the present invention, it utilizes device through computer measurement standard Data-interface, the Modbus TCP/IP communication modes carried by flow computer read flowmeter, chromatograph dependency number According to, each producer and the general remote Diagnosis Technology of type natural gas ultrasonic flowmeter are realized, improve gas ultrasonic flowmeter Remote Diagnosis Technology versatility, saved cost, solve technology shielding, improve enterprise management level.

Apparatus above embodiment is one-to-one, the simple part of device embodiment, referring to method reality with embodiment of the method Apply example.

Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.

Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and The interchangeability of software, generally describes the composition and step of each example according to feature in the above description.This A little functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specially Industry technical staff can realize described function to each specific application using distinct methods, but this realization is not The scope of the present invention should be exceeded.

The step of method or algorithm for being described with reference to the embodiments described herein, directly can be held with hardware, processor Capable software module, or the two combination is implemented.Software module can be placed in random access memory, internal memory, read-only storage, Electrically programmable ROM, electricity can sassafras except in programming ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field institute it is public In the storage medium of any other forms known.

Embodiments of the invention are described above, but the invention is not limited in above-mentioned specific embodiment party Formula, above-mentioned specific embodiment is only schematical, and rather than restricted, one of ordinary skill in the art is in this hair Under bright enlightenment, in the case of present inventive concept and scope of the claimed protection is not departed from, many forms can be also made, this Belong within protection of the invention.

Claims (8)

1. a kind of natural gas ultrasonic flowmeter Universal Remote diagnostic system, it is characterised in that the natural gas ultrasonic flowmeter leads to Include data acquisition subsystem and diagnostic analysis subsystem with remote diagnosis system;
The data acquisition subsystem includes ultrasonic flowmeter, one-level storage terminal, secondary storage terminal, control centre's server And cloud database;Interface communication module is provided between the ultrasonic flowmeter, one-level storage terminal;The one-level storage is eventually Bus communication module is provided between end, secondary storage terminal, office is provided between the secondary storage terminal, control centre's server Domain Network Communication module, public network communication module is provided between control centre's server and cloud database;
The ultrasonic flowmeter stores terminal communication and is connected by interface communication module and one-level, for by communication interface cable Gather the data on flows of ultrasonic flowmeter;
The one-level storage terminal is connected by bus communication module with secondary storage terminal communication, for data on flows to be passed through Data on flows is transferred to tertiary storage terminal by Ethernet;
The secondary storage terminal is connected by local area network communications module with control centre's server communication, for by data on flows The control centre's server at pipeline production run is transferred to by pipeline internal lan;
Control centre's server is communicated to connect by public network communication module with cloud database, for data on flows to be passed through Public network path is uploaded to cloud database.
2. natural gas ultrasonic flowmeter Universal Remote diagnostic system according to claim 1, it is characterised in that the diagnosis point Analysis subsystem include threshold setting module and data com-parison and analysis module, the threshold setting module, cloud database respectively with Data analysis comparison module is communicated to connect;
The threshold setting module is used to set the level threshold value of flow parameter;
The data analysis comparison module is used for from high in the clouds downloading flow data, and by the parameter of data on flows and flow parameter Level threshold value is compared analysis, and the corresponding ultrasonic flowmeter of the data on flows is diagnosed according to comparative analysis result.
3. natural gas ultrasonic flowmeter Universal Remote diagnostic system according to claim 1, it is characterised in that the interface leads to News module is RS485 interfaces.
4. natural gas ultrasonic flowmeter Universal Remote diagnostic system according to claim 1, it is characterised in that the bus is led to Letter module is Modbus/TCP network communication modules.
5. natural gas ultrasonic flowmeter Universal Remote diagnostic system according to claim 1, it is characterised in that the data point Analysis comparison module include velocity of sound analytic unit, signal quality analytic unit, gain values analysis unit, Analysis signal-to-noise ratio (SNR) unit and Flow speed characteristic analytic unit.
6. a kind of natural gas ultrasonic flowmeter Universal Remote diagnostic method, it is characterised in that the natural gas ultrasonic flowmeter leads to Include herein below with remote diagnosis method:
Data on flows is gathered from ultrasonic flowmeter by interface communication protocol, and by fieldindustrybus agreement by flow number Collected according to concentration is carried out;The level threshold value of flow parameter is set, the parameter of data on flows is entered with the level threshold value of flow parameter Row comparative analysis, diagnoses according to comparative analysis result to the corresponding ultrasonic flowmeter of the data on flows.
7. natural gas ultrasonic flowmeter Universal Remote diagnostic system according to claim 6, it is characterised in that the interface leads to News agreement is RS485 communications protocol.
8. natural gas ultrasonic flowmeter Universal Remote diagnostic system according to claim 6, it is characterised in that the live work Industry bus protocol is Modbus/TCP procotols.
CN201710095076.0A 2017-02-22 2017-02-22 General remote diagnosis system and method for natural gas ultrasonic flowmeter CN106706084A (en)

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Application publication date: 20170524