CN103771329B - A kind of train auto-loading metering system - Google Patents
A kind of train auto-loading metering system Download PDFInfo
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- CN103771329B CN103771329B CN201210416352.6A CN201210416352A CN103771329B CN 103771329 B CN103771329 B CN 103771329B CN 201210416352 A CN201210416352 A CN 201210416352A CN 103771329 B CN103771329 B CN 103771329B
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Abstract
The present invention relates to the large loading arm quantitative car-loading metering system of a kind of train, comprise the flow counter of coal tar naphtha, gasoline and diesel oil three kinds, entrucking size valve, shutoff valve and oil filling riser, entrucking valve and shutoff valve are positioned at oil transportation house steward, coal tar naphtha pipeline and petrol line parallel connection share, and are provided with valve selection entrucking kind.Gasoline flowmeter is arranged on ground, and improve flow counter back pressure, prevent oil product from vaporizing, improve accuracy and the automatic gauge level of oil metering, entrucking metering system is controlled by DCS control unit.Oil transportation main pipe line is reserved stream gauge on-line calibration interface respectively.The present invention utilizes high precision mass flowmeter on-line calibration, reduces the inaccurate problem of metering because flow counter Off-line calibration causes.Bicycle entrucking metering after implementing, maximum < 200kg by mistake, permutation accuracy is better than 0.2, is subject to the approval of petroleum products client as trade transaction metering method and alignment method.
Description
Technical field
The invention belongs to oil entrucking and field of measuring techniques, relate to the large loading arm quantitative car-loading of train and metering system, be specifically related to the large loading arm quantitative car-loading metering system of a kind of train for trade transaction.
Background technology
Petroleum products entrucking metering is the important step of petrochemical complex production and trade.Petroleum products dispatch from the factory mainly through rail tank car transport dispatch from the factory, truck tanker need use crane tube load, metering method be track scale weigh or dipping measure.Track scale weighs as weighing weight when empty before entrucking, weighs loaded vehicle weight again, deduct weight when empty be oil product weight by loaded vehicle weight after entrucking.Dipping metering, for measuring level height with measuring stick after entrucking, loads the weight of oil product according to the density calculation of oil product.The problem of these two kinds of methods is that metering process is loaded down with trivial details, automatization level and the accuracy of measuring low, manual operation amount is large, is subject to external factor impact, can not meets the demand of Petrochemical Enterprises fine-grained management.Use large crane tube load, adopt coriolis mass flowmeters metering can solve above-mentioned entrucking, metering process Problems existing, but prior art adopts gauging table to be arranged on loading platform vertex, flow counter back pressure is lower than product vapour pressure, flow counter is caused to measure inaccurate, sometimes bicycle residual quantity is more than 200k, permutation entrucking metering error > 0.2%.Must examine and determine every year as trade transaction flow counter, flow counter must be pulled down and send flux experiment room to carry out Off-line calibration, need repeatedly to adjust flow counter installing condition after returning dress and carry out comparing, could accurate measurement be ensured, but also entrucking metering system accuracy can not be ensured.Therefore, the metering of train large loading arm quantitative car-loading is unstable, can not get the accreditation of client, is difficult to as trade transaction metering method, becomes restriction Petrochemical Enterprises finished oil railway entrucking hair oil metering bottleneck.
Summary of the invention
The object of this invention is to provide a kind of train auto-loading metering system, improve entrucking metering accuracy and automatization level, reduce labour intensity, realize the method for large crane tube load metering as trade settlement.
Train auto-loading metering system of the present invention, comprise coal tar naphtha pipeline, petrol line, oil transportation house steward, naphtha stream gauge, the large valve of entrucking, shutoff valve and oil filling riser, the large valve of entrucking and shutoff valve are positioned at oil transportation house steward, coal tar naphtha pipeline and petrol line are installed in parallel, and are respectively equipped with valve.Naphtha stream gauge is arranged on coal tar naphtha pipeline.Large crane tube load metering system is controlled by DCS control unit.Entrucking metering system is provided with gasoline flowmeter.Gasoline flowmeter is positioned at petrol line, and gasoline flowmeter is arranged on ground.
Coal tar naphtha pipeline and petrol line are respectively equipped with bypass, and bypass is provided with portable calibrating flow meter, for calibrating gasoline flowmeter and naphtha stream gauge.Calibrated fluxes counts 0.05 grade standard mass flowmeter.DCS control unit is provided with communication fastener.Oil transportation house steward is provided with pressure transformer.Gasoline flowmeter and naphtha stream gauge are furnished with impulse singla transmitter.
At DCS operation screen display entrucking volume, convenient operation personnel control tank car load factor, increases flow, density curve record simultaneously, is easy to analysis, the process of measuring abnormal condition; Master mete signal is used for the contrast of the daily loading of freight waggon.At DCS operation screen display entrucking volume, convenient operation personnel control tank car load factor, increases flow, density curve record simultaneously, is easy to analysis, the process of measuring abnormal condition.Master mete signal is used for the contrast of the daily loading of freight waggon.
Train auto-loading metering system of the present invention, by increasing gasoline flowmeter, coal tar naphtha and gasoline with the metering of respective flow counter, improve accuracy and the automatization level of oil metering respectively, reduce labour intensity.Gasoline flowmeter is arranged on ground, improve the back pressure of flow counter, 4.4.2 is to the requirement of mass flowmeter back pressure to meet JJG1038 " coriolis mass flowmeters code " 7.1.1.4 and SYT6682 " with coriolis mass flow meter measurement liquid hydrocarbon flow ", and it is more accurate to measure.With 0.05 grade standard mass flowmeter composition " portable coriolis mass flowmeters calibrating/calibrating installation ", carry out on-line calibration according to JJG643 " Flow Standard Device With Standard Meter Method vertification regulation ", GB/T17286 " liquid hydrocarbon dynamic measurement volume metering verification system ", keep flow counter metering accuracy and stability.Entrucking metering statistics shows, after implementing the present invention, bicycle maximum error controls within 200kg, permutation accuracy < 0.2%, large crane tube load mass flowmeter metering is subject to the approval of petroleum products client as trade transaction metering method.
Implement to invention increases railway to dispatch from the factory the gentle accuracy of Automated water of metering control system, to production and operation fine-grained management, improve production efficiency and product quality, reduction productive costs, there is facilitation, obtain good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is train auto-loading metering system schematic flow sheet of the present invention;
The schematic flow sheet of another embodiment of Fig. 2 the present invention.
Wherein:
1-valve, 2-naphtha stream gauge, the large valve of 3-entrucking, 4-shutoff valve, 5-oil filling riser, 6-gasoline flowmeter, 7-tank car, 8-coal tar naphtha pipeline, 9-petrol line, 10-oil transportation house steward, 11-bypass, 12-calibrating flow meter.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1
Train auto-loading metering system of the present invention as shown in Figure 1, comprise coal tar naphtha pipeline 8, petrol line 9, oil transportation house steward 10, naphtha stream gauge 2, gasoline flowmeter 6, the large valve 3 of entrucking, shutoff valve 4 and oil filling riser 5, the large valve of entrucking and shutoff valve are positioned at oil transportation house steward, coal tar naphtha pipeline and petrol line are installed in parallel, and are respectively equipped with valve 1.Naphtha stream gauge 2 is arranged on coal tar naphtha pipeline, and gasoline flowmeter 6 is arranged on petrol line, and gasoline flowmeter 6 is positioned at ground.It is back pressure in order to improve flow counter that gasoline flowmeter is arranged on ground, improves the accuracy of measuring.Large crane tube load metering system is controlled by DCS control unit, and DCS control unit is provided with communication fastener.Flowmeter pulses signal is used for fixing quantity and metering clearing, and flow counter communication signal is used for metrological management and breakdown judge.Train auto-loading metering system of the present invention is used for trade transaction metering system.
The operational process of train auto-loading metering system of the present invention is, shutoff valve 4, entrucking large valve 3 is first opened during dress gasoline, start gasoline flowmeter 6, then open the valve of petrol line 9, make gasoline enter tank car by gasoline flowmeter 6, the large valve 3 of entrucking, shutoff valve 4 and oil filling riser 5.Table 1 is the nominal data of No. 97 gasoline entrucking meterings, is the comparative data that flow counter metering and track scale measure.Data show, mass flowmeter metering is less than 200kg with track scale metering error per car, and relative error is less than 0.2%, meets oil entrucking measuring requirement.
Table 1 gasoline entrucking gauging calibration data
Embodiment 2
As shown in Figure 2, petrol line 9 and coal tar naphtha pipeline 8 are respectively equipped with bypass 11 to another embodiment of the present invention, and calibrating flow meter 12 is equipped with in bypass.It is 0.05 grade standard mass flowmeter that calibrated fluxes is counted, and the entrance and exit of calibrating flow meter is provided with valve 1.With 0.05 grade standard mass flowmeter composition " portable coriolis mass flowmeters calibrating/calibrating installation ", carry out on-line calibration according to JJG643 " Flow Standard Device With Standard Meter Method vertification regulation ", GB/T17286 " liquid hydrocarbon dynamic measurement volume metering verification system ".Calibrating flow meter 12 on-line calibration gasoline flowmeter 6, can adjust the parameter of flow counter in time, improves accuracy and the quantification stability of flow counter.Other is identical with embodiment 1.Oil transportation house steward 10 is provided with pressure transformer.Real-time display entrucking pressure, the best loading time of convenient operation personnel control, reduces because of delayed with connection school, tank field, causes entrucking to measure inaccurate, also can realize interlocked control with entrucking.Gasoline flowmeter 6 and naphtha stream gauge 2 are furnished with impulse singla transmitter.
Claims (5)
1. a train auto-loading metering system, comprise coal tar naphtha pipeline (8), petrol line (9), oil transportation house steward (10), naphtha stream gauge (2), the large valve of entrucking (3), shutoff valve (4) and oil filling riser (5), the large valve of entrucking and shutoff valve are positioned at oil transportation house steward, coal tar naphtha pipeline and petrol line are installed in parallel, and be respectively equipped with valve (1), naphtha stream gauge is arranged on coal tar naphtha pipeline; Described entrucking metering system is controlled by DCS control unit, it is characterized in that: described entrucking metering system is provided with gasoline flowmeter (6); Described gasoline flowmeter is positioned at petrol line, and described gasoline flowmeter (6) is arranged on ground; Described gasoline flowmeter (6) and naphtha stream gauge (2) are furnished with impulse singla transmitter.
2. train auto-loading metering system according to claim 1, is characterized in that: described coal tar naphtha pipeline (8) and petrol line (9) are respectively equipped with bypass (11), and bypass is provided with portable calibrating flow meter (12).
3. train auto-loading metering system according to claim 2, is characterized in that: described calibrating flow meter (12) is 0.05 grade standard mass flowmeter.
4. train auto-loading metering system according to claim 1, is characterized in that: described DCS control unit is provided with communication fastener.
5. train auto-loading metering system according to claim 1, is characterized in that: described oil transportation house steward (10) is provided with pressure transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210416352.6A CN103771329B (en) | 2012-10-26 | 2012-10-26 | A kind of train auto-loading metering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210416352.6A CN103771329B (en) | 2012-10-26 | 2012-10-26 | A kind of train auto-loading metering system |
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| CN103771329A CN103771329A (en) | 2014-05-07 |
| CN103771329B true CN103771329B (en) | 2016-04-20 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106241717A (en) * | 2016-08-29 | 2016-12-21 | 广饶科力达石化科技有限公司 | Ration loading system |
| CN106228691A (en) * | 2016-08-29 | 2016-12-14 | 广饶科力达石化科技有限公司 | A kind of ration loading system |
| CN108195437A (en) * | 2018-01-26 | 2018-06-22 | 湖北艾度科技有限公司 | A kind of movable type oil filling riser flow measurement vehicle |
| CN108346350B (en) * | 2018-05-17 | 2024-01-05 | 广州工程技术职业学院 | Novel oil metering training device |
| CN111487078A (en) * | 2020-04-28 | 2020-08-04 | 上海敬邦机电设备有限公司 | Detection device and method for quantitative loading system |
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| EP0296648A1 (en) * | 1987-06-02 | 1988-12-28 | Pumptech N.V. | Liquid metering system with a broad range of volumes, viscosities and applications chiefly for oil-sector fluids |
| CN201190100Y (en) * | 2007-11-28 | 2009-02-04 | 蓝星（天津）化工有限公司 | Loading control facility with digital communication |
| CN101857182A (en) * | 2009-04-07 | 2010-10-13 | 李小磊 | Automobile loading skid-mounted oil delivery device |
| CN102070116A (en) * | 2009-11-19 | 2011-05-25 | 上海轻叶工程科技有限公司 | Distributed quantitative loading control system |
| CN102530817A (en) * | 2010-12-12 | 2012-07-04 | 湖北弘仪电子科技有限公司 | Skid-mounted system |
| CN202358905U (en) * | 2011-12-12 | 2012-08-01 | 中国石油集团工程设计有限责任公司 | Integrated petroleum loading and unloading device for automobiles |
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2012
- 2012-10-26 CN CN201210416352.6A patent/CN103771329B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0296648A1 (en) * | 1987-06-02 | 1988-12-28 | Pumptech N.V. | Liquid metering system with a broad range of volumes, viscosities and applications chiefly for oil-sector fluids |
| CN201190100Y (en) * | 2007-11-28 | 2009-02-04 | 蓝星（天津）化工有限公司 | Loading control facility with digital communication |
| CN101857182A (en) * | 2009-04-07 | 2010-10-13 | 李小磊 | Automobile loading skid-mounted oil delivery device |
| CN102070116A (en) * | 2009-11-19 | 2011-05-25 | 上海轻叶工程科技有限公司 | Distributed quantitative loading control system |
| CN102530817A (en) * | 2010-12-12 | 2012-07-04 | 湖北弘仪电子科技有限公司 | Skid-mounted system |
| CN202358905U (en) * | 2011-12-12 | 2012-08-01 | 中国石油集团工程设计有限责任公司 | Integrated petroleum loading and unloading device for automobiles |
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| CN103771329A (en) | 2014-05-07 |
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