CN103771329A - Large train crane pipe loading metering system - Google Patents
Large train crane pipe loading metering system Download PDFInfo
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- CN103771329A CN103771329A CN201210416352.6A CN201210416352A CN103771329A CN 103771329 A CN103771329 A CN 103771329A CN 201210416352 A CN201210416352 A CN 201210416352A CN 103771329 A CN103771329 A CN 103771329A
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Abstract
The invention relates to a large train crane pipe loading metering system which comprises a naphtha flowmeter, a gasoline flowmeter and a diesel oil flowmeter, a large loading valve, a small loading valve, a stop valve and a crane pipe. The loading valves and the stop valve are located on an oil conveying header pipe, a naphtha pipeline and a gasoline pipeline are connected in parallel to be used in common, and the valves are arranged for loading type selection. The gasoline flowmeter is installed on the ground, the backpressure of the flowmeter is improved, oil product vaporization is prevented, oil product metering accuracy and the automatic metering level are improved, and the loading metering system is controlled by a DCS control unit. Flowmeter on-line calibration ports are reserved in the oil conveying header pipe. According to the large train crane pipe loading metering system, high-precision mass flowmeter on-line calibration is utilized, the problems of inaccurate metering caused by off-line verification of the flowmeters are solved, single train loading metering is achieved after the system is implemented, the largest error is smaller than 200 kg, the accuracy of the whole train is larger than 0.2, and a trade custody transfer metering method and the calibration method are accepted by oil product clients.
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 dispatches from the factory and is mainly transported and dispatched from the factory by rail tank car, and truck tanker need be used crane tube load, and metering method is that track scale weighs or dipping metering.Track scale weighs as weighing weight when empty before entrucking, weighs loaded vehicle weight after entrucking again, deducts weight when empty be oil product weight by loaded vehicle weight.Dipping metering is to measure level height with measuring stick after entrucking, packs the weight of oil product according to the density calculation of oil product into.The problem of these two kinds of methods is, metering process is loaded down with trivial details, and automatization level and the accuracy of measuring are low, and manual work amount is large, is subject to external factor impact, can not meet the demand of Petrochemical Enterprises fine-grained management.Use large crane tube load, adopt coriolis mass flowmeters metering can solve the problem of above-mentioned entrucking, metering process existence, but prior art adopts gauging table to be arranged on loading platform vertex, flow counter back pressure is pressed lower than product vapour, cause flow counter metering inaccurate, sometimes bicycle residual quantity exceedes 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 flow laboratory to carry out Off-line calibration, after returning dress, need repeatedly to adjust flow counter installing condition and carry out comparing, could ensure accurate measurement, but also can not guarantee entrucking metering system accuracy.Therefore, the large loading arm quantitative car-loading metering of train is unstable, can not get client's approval, 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, coal tar naphtha flow meter, 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.Coal tar naphtha flow meter is arranged on coal tar naphtha pipeline.Large crane tube load metering system is by the control of 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 coal tar naphtha flow meter.Calibrated fluxes is counted 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 coal tar naphtha flow meter are furnished with impulse singla transmitter.
Show entrucking volume at DCS operation screen, convenient operation personnel control tank car load factor increases flow, density curve record simultaneously, is easy to measure analysis, the processing of abnormal condition; Master mete signal is for daily loading of freight waggon contrast.Show entrucking volume at DCS operation screen, convenient operation personnel control tank car load factor increases flow, density curve record simultaneously, is easy to measure analysis, the processing of abnormal condition.Master mete signal is for daily loading of freight waggon contrast.
Train auto-loading metering system of the present invention, by increasing gasoline flowmeter, coal tar naphtha and gasoline measure by flow counter separately respectively, have improved accuracy and the automatization level of oil metering, reduce labour intensity.Gasoline flowmeter is arranged on ground, improve the back pressure of flow counter, meet JJG 1038 " coriolis mass flowmeters rules " 7.1.1.4 and SYT 6682 " with the coriolis mass flow meter measurement liquid hydrocarbon flow " requirement of 4.4.2 to mass flowmeter back pressure, 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 JJG 643 " Flow Standard Device With Standard Meter Method vertification regulation ", GB/T 17286 " liquid hydrocarbon dynamic measurement volume metering verification system ", keep flow counter metering accuracy and stability.Entrucking quantitative statistics data show, after implementing the present invention, bicycle maximum error is controlled in 200kg, permutation accuracy < 0.2%, large crane tube load mass flowmeter metering is subject to petroleum products client's approval as trade transaction metering method.
Implement the present invention and improved the dispatch from the factory gentle accuracy of Automated water of metering control system of railway, to production and operation fine-grained management, improve production efficiency and product quality, reducing production costs has facilitation, obtains 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-coal tar naphtha flow meter, 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.
The specific embodiment
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, coal tar naphtha flow meter 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.Coal tar naphtha flow meter 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 the 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 by the control of DCS control unit, and DCS control unit is provided with communication fastener.Flow counter impulse singla is for quantitatively controlling and metering clearing, and flow counter communication signal is for metrological management and fault judgement.Train auto-loading metering system of the present invention is for trade transaction metering system.
The operational process of train auto-loading metering system of the present invention is, when dress gasoline, first open shutoff valve 4, the large valve 3 of entrucking, 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 entruckings metering, is the comparative data of flow counter metering and track scale metering.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 JJG 643 " Flow Standard Device With Standard Meter Method vertification regulation ", GB/T 17286 " liquid hydrocarbon dynamic measurement volume metering verification system ".Calibrating flow meter 12 on-line calibration gasoline flowmeters 6, can adjust the parameter of flow counter in time, improve accuracy and the quantification stability of flow counter.Other is identical with embodiment 1.Oil transportation house steward 10 is provided with pressure transformer.Show in real time entrucking pressure, the best loading time of convenient operation personnel control, reduces because lagging behind with connection school, tank field, causes entrucking metering inaccurate, also can realize interlocked control with entrucking.Gasoline flowmeter 6 and coal tar naphtha flow meter 2 are furnished with impulse singla transmitter.
Claims (6)
1. a train auto-loading metering system, comprise coal tar naphtha pipeline (8), petrol line (9), oil transportation house steward (10), coal tar naphtha flow meter (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), coal tar naphtha flow meter is arranged on coal tar naphtha pipeline; Described entrucking metering system, by the control of DCS control unit, 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.
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.
6. train auto-loading metering system according to claim 1, is characterized in that: described gasoline flowmeter (6) and coal tar naphtha flow meter (2) are furnished with impulse singla transmitter.
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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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| CN201210416352.6A CN103771329B (en) | 2012-10-26 | 2012-10-26 | A kind of train auto-loading metering system |
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| CN103771329A true CN103771329A (en) | 2014-05-07 |
| CN103771329B CN103771329B (en) | 2016-04-20 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106241717A (en) * | 2016-08-29 | 2016-12-21 | 广饶科力达石化科技有限公司 | 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 |
| CN108346350A (en) * | 2018-05-17 | 2018-07-31 | 广州工程技术职业学院 | A kind of Novel oil product metering actual training device |
| WO2021218054A1 (en) * | 2020-04-28 | 2021-11-04 | 上海敬邦机电设备有限公司 | Detection apparatus 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 |
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| 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
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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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106241717A (en) * | 2016-08-29 | 2016-12-21 | 广饶科力达石化科技有限公司 | 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 |
| CN108346350A (en) * | 2018-05-17 | 2018-07-31 | 广州工程技术职业学院 | A kind of Novel oil product metering actual training device |
| CN108346350B (en) * | 2018-05-17 | 2024-01-05 | 广州工程技术职业学院 | Novel oil metering training device |
| WO2021218054A1 (en) * | 2020-04-28 | 2021-11-04 | 上海敬邦机电设备有限公司 | Detection apparatus and method for quantitative loading system |
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| CN103771329B (en) | 2016-04-20 |
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