CN107859880A - A kind of flow investigation analysis method that behavior is stolen for metering process after the pressure regulation of combustion gas elder generation - Google Patents
A kind of flow investigation analysis method that behavior is stolen for metering process after the pressure regulation of combustion gas elder generation Download PDFInfo
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- CN107859880A CN107859880A CN201710983951.9A CN201710983951A CN107859880A CN 107859880 A CN107859880 A CN 107859880A CN 201710983951 A CN201710983951 A CN 201710983951A CN 107859880 A CN107859880 A CN 107859880A
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- gas
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
Abstract
A kind of investigation method that behavior is stolen for combustion gas, with the pipeline of gas facility from gas ductwork to user, first pass through the pressure regulation of voltage adjusting device, then accessing user is with gas facility after the metering of measuring equipment, if at the t1 moment, the pressure of measuring equipment collection is PAt1, instantaneous delivery Ft1；In the last moment t0 at t1 moment, the pressure of measuring equipment collection is PAt0, instantaneous delivery Ft0；In the subsequent time t2 at t1 moment, the pressure of measuring equipment collection is PAt2, instantaneous delivery Ft2If PAt0‑PAt1≤ a, and Ft1/Ft0≤ b, and Ft2/Ft0＜ c, then judge, starts there may be at the t1 moment and steals gas behavior, steals people and combustion gas is delivered directly into user with gas facility at the pipeline tapping between voltage adjusting device and measuring equipment；Or steal people by combustion gas from the opening before voltage adjusting device by user's decompression facility depressurize after, be supplied to user with gas facility.
Description
Technical field
The invention belongs to fuel gas transmission to manage technical field, more particularly to a kind of to be stolen for metering process after the pressure regulation of combustion gas elder generation
The flow investigation analysis method of robber's behavior.
Background technology
With the growth of industry and commerce gas user quantity, steal gas illegal activities and happen occasionally.Gas behavior is stolen to combustion gas
Company brings huge economic loss, is the major reason for causing gas company's production and marketing difference.Simultaneously as combustion gas is inflammable easy
Quick-fried characteristic, gas facility are once destroyed, it is easy to the accidents such as gas leakage, blast occur, are brought to society huge
Potential safety hazard.
According to statistics, the method for industry and commerce gas user pilferage gas includes：First, repacking or damage gas metering facility, make it
It is careful, does not walk even backward walking；Second, taken over privately on steam line, around metering facility.
At present, pilferage gas behavior of the gas company to industry and commerce user, typically checked using artificial regular visit, scene
Method is investigated and prevented.This method does not have specific aim, it is necessary to patrol all users, significantly increases and patrols
The work load of personnel is looked into, and needs substantial amounts of manpower, material resources and financial resources.When user occur steal gas behavior when also differ surely and
Shi Faxian is simultaneously prevented.
Gas company supplies for industry and commerce gas user by laying gas ductwork, installation gas facility, ensures industry and commerce
User security production requirement.Natural gas companies have installed all kinds of instrument and meter (such as pressure invertings when being supplied to industry and commerce user
Device, flowmeter etc.), and can be checked by technological means (such as building SCADA system, teletransmission meter reading), or manual site
Recording meanses, gather simultaneously storage apparatus instrumented data (such as pressure, flow, temperature).So that in the data of gas company's collection
On the basis of, applicable mathematical modeling is established, data are carried out with calculating analysis, and is inferred to according to analysis result that may be present
Steal gas illegal activities.
In general, there are two kinds of situations in industry and commerce gas user supply facility access natural gas：One kind is metering facility
Before pressure regulation facility, i.e., " first measure, rear pressure regulation "；One kind be metering facility be arranged on pressure regulation facility after, i.e., " first pressure regulation,
Measure afterwards ".As shown in figure 1, it is " first measuring, rear pressure regulation " supply facility artwork.To the explanation of the supply facility artwork such as
Under：
Before ■ metering facilities are arranged on pressure regulation facility, after the gas of gas company's pipe network out first passes through metering facility metering,
Access customer gas facility is entered by pressure regulation facility pressure regulation again；
■ metering zones:In the presence of one or more measuring instrument (flowmeter), multiple metering instrument is often used for multiple metering
Supply or master-slave redundancy metering supply；
■ pressure regulation area：In the presence of one or more pressure regulation facility, multichannel pressure regulation facility is often used for active and standby road redundancy pressure regulation and supplied
Gas or multichannel pressure regulation supply；
■PBFor pressure before pressure regulation, PAFor pressure after pressure regulation；
The collectable data of ■ metering zones mainly have temperature, pressure, flow；
It is pilferage feed channel that may be present that ■, which is identified as pipe 2,:Steal people and open valve 2, stealing gas by user depressurizes
After facility decompression direct-furnish to user with gas facility.
As shown in Fig. 2 it is " first pressure regulation, rear metering " supply facility artwork.Fig. 2 supply facility artwork is illustrated such as
Under：
After ■ metering facilities are arranged on pressure regulation facility, after the gas of gas company's pipe network out first passes through pressure regulation facility pressure regulation,
Measured again through metering facility into access customer gas facility；
■ metering zones:In the presence of one or more measuring instrument (flowmeter), multiple metering instrument is often used for multiple metering
Supply or master-slave redundancy metering supply；
■ pressure regulation area：In the presence of one or more pressure regulation facility, multichannel pressure regulation facility is often used for active and standby road redundancy pressure regulation and supplied
Gas or multichannel pressure regulation supply；
■PBFor pressure before pressure regulation, PAFor pressure after pressure regulation；
The collectable data of ■ metering zones mainly have temperature, pressure, flow；
■ pipes 2, pipe 3 are two kinds that may be present pilferage feed channels, and user opens valve 2, pipeline gas Firsthand Users are used
Gas facility；Or user opens valve 3, after pipeline gas is depressurized by decompression facility direct-furnish to user with gas facility.
The content of the invention
The present invention provides a kind of investigation method that behavior is stolen for combustion gas, it is therefore intended that auxiliary investigation judges stealing for combustion gas
Robber's behavior.That is, on the basis of the data of gas company's collection, applicable mathematical modeling is established, calculating analysis is carried out to data,
And pilferage gas illegal activities that may be present are inferred to according to analysis result.
A kind of investigation method that behavior is stolen for combustion gas, wherein, it is first with the pipeline of gas facility from gas ductwork to user
By the metering of measuring equipment, then after the pressure regulation of voltage adjusting device accessing user with gas facility, it is characterised in that
If at the t1 moment, the pressure of measuring equipment collection is PBt1, instantaneous delivery Ft1, in subsequent time t2, metering is set
The pressure of standby collection is PBt2, instantaneous delivery Ft2If
PBt1-PBt2＞ a, and
0≤Ft2＜ b
Here, a is pressure differential, and b is instantaneous delivery, is set all in accordance with industry data accumulation,
Then judge, start there may be at the t2 moment and steal gas behavior, combustion gas is probably from the opening before measuring equipment
By being supplied to user after decompression facility with gas facility.
A kind of investigation method that behavior is stolen for combustion gas, wherein, it is first with the pipeline of gas facility from gas ductwork to user
By the pressure regulation of voltage adjusting device, then after the metering of measuring equipment accessing user with gas facility, it is characterised in that
If at the t1 moment, the pressure of measuring equipment collection is PAt1, instantaneous delivery Ft1；In subsequent time t2, metering is set
The pressure of standby collection is PAt2, instantaneous delivery Ft2If
PAt1-PAt2＞ a, and
0≤Ft2＜ b
Here, a is pressure differential, and b is instantaneous delivery, is set all in accordance with industry data accumulation,
Then judge, start there may be at the t2 moment and steal gas behavior, combustion gas may lead to from the opening before voltage adjusting device
Cross after decompression facility and be transported to user with gas facility, or combustion gas is by from the pipeline tapping between voltage adjusting device and measuring equipment
Place is delivered directly to user with gas facility.
A kind of investigation method that behavior is stolen for combustion gas, wherein, it is first with the pipeline of gas facility from gas ductwork to user
By the pressure regulation of voltage adjusting device, then after the metering of measuring equipment accessing user with gas facility, it is characterised in that
If at the t1 moment, the pressure of measuring equipment collection is PAt1, instantaneous delivery Ft1；
In the last moment t0 at t1 moment, the pressure of measuring equipment collection is PAt0, instantaneous delivery Ft0；
In the subsequent time t2 at t1 moment, the pressure of measuring equipment collection is PAt2, instantaneous delivery Ft2If
PAt0-PAt1≤ a, and
Ft1/Ft0≤ b, and
Ft2/Ft0<c
Then judge, start there may be at the t1 moment and steal gas behavior, steal people by combustion gas from positioned at voltage adjusting device and meter
Measure and be delivered directly to user with gas facility at the pipeline tapping of equipment room；Or people is stolen by combustion gas from opening before voltage adjusting device
After mouthful place is depressurized by user's decompression facility, user is supplied to gas facility,
Here, a is pressure differential, and b is two adjacent instantaneous delivery ratios, and c is two alternate instantaneous delivery ratios, all in accordance with
Industry data is accumulated to set.
The present invention be directed to the investigation side of the pilferage gas behavior of " on steam line take over privately, around metering facility "
Method, data model is mainly established on the basis of the changing value (rate) of different time by gaseous-pressure and instantaneous delivery, passes through information
Change system is judged.
The present invention steals gas situation for industry and commerce user for gas industry and provides a kind of based on data, science
, effective analysis method.For general industry and commerce user, it can be quickly analyzed with the presence or absence of pilferage gas behavior.The pilferage
Gas investigation method is realized by information system, and substantial amounts of data can be investigated automatically, and gas company can tie according to analysis
Fruit, targetedly carries out scene inspection, greatly alleviates the burden of patrolman, improves the efficiency of inspection.Pass through analysis
Investigation, find to steal gas behavior in time, it is poor to reduce the production and marketing of gas company, ensures interests, can find to steal gas in time illegal
Behavior, potential safety hazard existing for timely elimination.
Brief description of the drawings
Detailed description below, above-mentioned and other mesh of exemplary embodiment of the invention are read by reference to accompanying drawing
, feature and advantage will become prone to understand.In the accompanying drawings, if showing the present invention's by way of example, and not by way of limitation
Dry embodiment, wherein：
Fig. 1 is a kind of supply facility artwork in the embodiment of the present invention.
Fig. 2 is another supply facility artwork in the embodiment of the present invention.
Embodiment
The present invention is mainly realized for stealing gas investigation method by tolerance management system.Pass through technological means (such as SCADA
System, teletransmission meter reading etc.), all kinds of creation datas (temperature, the pressure, flow etc.) storage of user's field instrumentation instrument to collect is arrived
In tolerance Management System Data storehouse, it is some can not the data of automatic data collection can be by being manually entered after manual metering.System user leads to
Cross system and choose any industry and commerce gas user (user can multiselect) data in section at any time, according to stealing gas investigation side
Method carries out calculating analysis, and Automatic sieve selects the industry and commerce gas user that there may be within the taken period and steal gas.
Two kinds of Data Analysis Models are mainly included for stealing gas investigation method, first, the data analysis mould based on pressure
Type, second, the Data Analysis Model based on flow.
1. the Data Analysis Model based on pressure
When industry and commerce gas user is the situation of " first measuring, rear pressure regulation ", as Fig. 1 " first measuring, rear pressure regulation " when, mainly
To the pressure P before pressure regulationBAnalyzed.If industry and commerce gas user, which exists, steals gas behavior, stealing gas behavior should occur
Before metering facility.
It is assumed that at the t1 moment, the pressure of metering zone collection is PBt1, instantaneous delivery Ft1；Subsequent time t2, metering region
The pressure of collection is PBt2, instantaneous delivery Ft2.If
PBt1-PBt2＞ a, and
0≤Ft2＜ b
Then, start there may be at the t2 moment and steal gas behavior, it is probably Fig. 1 middle pipes 2 to steal gas behavior.User opens valve
Door 2, after the supply in gas ductwork is stolen into the decompression of gas decompression facility by user, user is directly supplied to gas facility.Now,
Valve 1 may close or reach certain aperture.
A (pressure differential) and b (instantaneous delivery) is set all in accordance with actual conditions.My company is voltage regulating station equipment supplier,
Year supply more than 2000, there are the industry experience and data accumulation of more than 20 years, by process pipe data and production run
Data such as pipe diameter, production run pressure and range, production run average discharge, flowmeter range etc. carry out big data point
Analysis, obtain average value a, b.For example, the industry and commerce gas user of side of day gas consumption 50,000 or so, pipe diameter D=100 are raw
Produce within operating pressure 3kPa, the side of production run average discharge 2000, within the side of flowmeter range 5000, the pressure difference a before pressure regulation
>=100kPa, instantaneous delivery b≤100m3During/h, it is possible to exist and steal gas behavior.
When the situation that industry and commerce gas user is " first pressure regulation, rear metering ", as Fig. 2 " first pressure regulation, rear metering " when, mainly
To the pressure P after pressure regulationAAnalyzed.If industry and commerce gas user, which exists, steals gas behavior, stealing gas behavior should occur
Before metering facility.
It is assumed that at the t1 moment, the pressure of metering zone collection is PAt1, instantaneous delivery Ft1；Subsequent time t2, metering zone are adopted
The pressure integrated is PAt2, instantaneous delivery Ft2.If
PAt1-PAt2＞ a, and
0≤Ft2＜ b
Then, start there may be at the t2 moment and steal gas behavior, it is probably the pipe 2 or pipe 3 in Fig. 2 to steal gas behavior.With
Family open valve 2, by gas ductwork for gas be delivered directly to user's gas facility；Or valve 3 is opened, by gas ductwork
After the gas of confession is depressurized by user's decompression facility, user is directly supplied to gas facility.Now, valve 1 may close or reach one
Determine aperture.
A (pressure differential) and b (instantaneous delivery) is set all in accordance with actual conditions.My company is voltage regulating station equipment supplier,
Year supply more than 2000, there are the industry experience and data accumulation of more than 20 years, by process pipe data and production run
Data such as pipe diameter, production run pressure and range, production run average discharge, flowmeter range etc. carry out big data point
Analysis, obtain average value a, b.For example, the industry and commerce gas user of side of day gas consumption 50,000 or so, pipe diameter D=100 are raw
Produce within operating pressure 3kPa, the side of production run average discharge 2000, within the side of flowmeter range 5000, pressure difference a after pressure regulation
>=5kPa, instantaneous delivery b≤50m3During/h, it is possible to exist and steal gas behavior.
2. the Data Analysis Model based on flow
Data Analysis Model based on flow is primarily adapted for use in the situation of " first pressure regulation, rear metering ", to being gathered after pressure regulation
Instantaneous delivery carry out calculating analysis.If industry and commerce gas user, which exists, steals gas behavior, stealing gas behavior should occur
Before metering facility.
It is assumed that at the t1 moment, the pressure of metering zone collection is PAt1, instantaneous delivery Ft1；Its last moment t0, metering zone
The pressure of collection is PAt0, instantaneous delivery Ft0；Its subsequent time t2, the pressure of metering zone collection is PAt2, instantaneous delivery is
Ft2.If
PAt0-PAt1≤ a, and
Ft1/Ft0≤ b, and
Ft2/Ft0＜ c
Then, start there may be at the t1 moment and steal gas behavior, it is probably the pipe 2 or pipe 3 in Fig. 2 to steal gas behavior.With
Valve 2 is opened at family, and the supply in gas ductwork is delivered directly into user with gas facility；Or valve 3 is opened, by gas ductwork
Supply by user's decompression facility depressurize after, be directly supplied to user with gas facility.Now valve 1 may be closed or reached and be certain
Aperture.
A (pressure differential), b (two adjacent instantaneous delivery ratio), c (two alternate instantaneous delivery ratio) is all in accordance with actual feelings
Condition is set.My company is voltage regulating station equipment supplier, year supply more than 2000, have industry experience and the data of more than 20 years
Accumulation, by being put down to process pipe data and production run data such as pipe diameter, production run pressure and range, production run
Equal flow, flowmeter range etc. carry out big data analysis, obtain average value a, b.For example, side of day gas consumption 50,000 or so
Industry and commerce gas user, within pipe diameter D=100, production run pressure 3kPa, the side of production run average discharge 2000, stream
Within the side of gauge range 5000, pressure difference a≤5kPa after pressure regulation, b≤0.5, c≤0.8, i.e., at the t1 moment, there is pressure differential (a),
Instantaneous delivery rapid drawdown is to less than 50%, and when later moment in time instantaneous delivery does not go back up to 80%, it is possible to exists steathily
Steal gas behavior.
As long as meet any one in the Data Analysis Model based on pressure and the Data Analysis Model based on flow
Kind of situation, system all can Automatic sieve select and be identified as and steal gas behavior.
What deserves to be explained is although foregoing teachings describe the essence of the invention by reference to some embodiments
God and principle, it should be appreciated that, the present invention is not limited to disclosed embodiment, the also unawareness of the division to each side
The feature that taste in these aspects can not combine, and this division is merely to the convenience of statement.It is contemplated that cover appended power
Included various modifications and equivalent arrangements in the spirit and scope that profit requires.
Claims (1)
1. a kind of investigation method that behavior is stolen for combustion gas, wherein, with the pipeline of gas facility from gas ductwork to user, first pass through
Cross the pressure regulation of voltage adjusting device, then after the metering of measuring equipment accessing user with gas facility, it is characterised in that
If at the t1 moment, the pressure of measuring equipment collection is PAt1, instantaneous delivery Ft1；
In the last moment t0 at t1 moment, the pressure of measuring equipment collection is PAt0, instantaneous delivery Ft0；
In the subsequent time t2 at t1 moment, the pressure of measuring equipment collection is PAt2, instantaneous delivery Ft2If
PAt0-PAt1≤ a, and
Ft1/Ft0≤ b, and
Ft2/Ft0＜ c
Then judge, start there may be at the t1 moment and steal gas behavior, steal people and set combustion gas from positioned at voltage adjusting device and metering
User is delivered directly to gas facility at pipeline tapping between standby；Or people is stolen by combustion gas from the opening before voltage adjusting device
After being depressurized by user's decompression facility, user is supplied to gas facility,
Here, a is pressure differential, and b is two adjacent instantaneous delivery ratios, and c is two alternate instantaneous delivery ratios, all in accordance with industry
Data accumulation is set.
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|---|---|---|---|
| CN201710983951.9A CN107859880A (en) | 2017-10-20 | 2017-10-20 | A kind of flow investigation analysis method that behavior is stolen for metering process after the pressure regulation of combustion gas elder generation |
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| CN201710983951.9A CN107859880A (en) | 2017-10-20 | 2017-10-20 | A kind of flow investigation analysis method that behavior is stolen for metering process after the pressure regulation of combustion gas elder generation |
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| CN107859880A true CN107859880A (en) | 2018-03-30 |
Family
ID=61697655
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| CN201710983951.9A Pending CN107859880A (en) | 2017-10-20 | 2017-10-20 | A kind of flow investigation analysis method that behavior is stolen for metering process after the pressure regulation of combustion gas elder generation |
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Cited By (4)
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| CN110425429A (en) * | 2019-09-09 | 2019-11-08 | 山东拙诚智能科技有限公司 | A kind of real-time monitoring regulator valve port state and the method that downstream flow is estimated |
| CN110566821A (en) * | 2019-09-09 | 2019-12-13 | 山东拙诚智能科技有限公司 | method for realizing downstream pipe network leakage detection by monitoring pressure state of pressure regulating device |
| CN111578149A (en) * | 2020-05-25 | 2020-08-25 | 重庆西美仪器仪表有限公司 | Gas pipeline leakage monitoring method, device and system and storage medium |
| CN113154258A (en) * | 2020-05-29 | 2021-07-23 | 威海同天信息科技有限公司 | Method for monitoring characteristic flow of low-pressure gas pipeline |
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