CN1690504A - High pressure sealing ring current type crude oil wax deposition simulating device - Google Patents
High pressure sealing ring current type crude oil wax deposition simulating device Download PDFInfo
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- CN1690504A CN1690504A CN 200410034180 CN200410034180A CN1690504A CN 1690504 A CN1690504 A CN 1690504A CN 200410034180 CN200410034180 CN 200410034180 CN 200410034180 A CN200410034180 A CN 200410034180A CN 1690504 A CN1690504 A CN 1690504A
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Abstract
The invention provides a high-pressure sealing circulatory imitating wax deposition device for wax deposition imitation in long petroleum pipeline. It comprises a sealing kettle (26) which has an oil inlet (15) and an oil outlet (27), an electric stirrer (23) inserted in kettle (26), a temperature-control and a detector. The temperature-control has an inner heater which is fixed on the stirrer (23) and inserted in the kettle (26), a clamping sheath (4) which covers the inner container (6), a heat-insulating layer (3) and an outer cover (2). The detector comprises a piezometer (10) which is inserted in the kettle (26) through the kettle cover (7), a plurality of temperature sensor (21-2) in the kettle (26), a temperature sensor slideway (14), a plurality of temperature sensor drive pipe (20) which is through the outer cover (2), heat-insulating layer (3), clamping sheath (4) and close to the outer wall of inner container (6). Said simulator has small structure, volume, little apparatuses, large experiment space of oil sample, while the equivalent sheared intensity of oil sample equals the intensity of on-site oil of channel in the simulating experiment that the geometrical and dynamical condition is close to the on-site reality. The experiment has real simulating course, accurate data, and lower cost.
Description
Technical field
The present invention is the high pressure sealing ring-current wax deposition simulator that is used for the simulation of crude oil long-distance transmission pipeline wax deposition.Relate to the pipe-line system technical field.
Background technique
Wax deposition in the crude oil long-distance transmission pipeline has a strong impact on the safety and economic operation of pipeline, and the wax deposition situation of grasping in the pipeline has great importance for the pipeline network operator.The oil transportation scene mainly is to ask average wax deposition thickness between the station by pressure drop inverse between the station at present, and owing to the pipeline Operational Limits often is in the fluctuation, thereby the wax deposition data degree of accuracy that obtains in this way is not high, and can't reflect that real wax deposition distributes in the pipeline.Another kind method is to utilize indoor simulation device to predict that by simulation test the wax deposition in the pipeline distributes, this method obtains test data by simulated field conditions, obtaining in the on-the-spot pipeline wax deposition after test data analyzer handled along pipe range and rule over time, is the main method of predicting the interior wax deposition of pipeline at present.The simulator that adopts is commonly the circuit device, utilizes small-sized screw pump or gear pump as circulation power.Though this class device is similar with on-the-spot pipeline on the type of flow, but owing to be subjected to the restriction of temperature control ability and oil sample, general caliber is all done very for a short time, internal diameter is greatly about about 10～12mm, cause the oil sample running space littler dozens or even hundreds of times like this, and the wall shear stress that oil sample is subjected to will be greatly tens times than on-the-spot.Secondly, because the circuit limited length, so the oil sample number of times that stands pump-shear effect therein is than scene much more (between an on-the-spot station only once).Pump-shear effect intensity is very big, influences wax crystalline form attitude, thereby also has influence on oil sample and cross the wax deposition in pipeline behind the pump.All these influences the accuracy of circuit simulation, must carry out a large amount of physics to the processing of test data with on amplifying and Mathematical treatment is proofreaied and correct, thereby utilize circuit simulation wax deposition process loaded down with trivial details, has shortcoming.
Summary of the invention
The equivalent shear strength that oily stream is subjected in the equivalent shear strength that the objective of the invention is to invent that a kind of oil sample test space is big, oil sample is subjected in the test and the on-the-spot pipeline is suitable, the geometry of simulation test and the mechanical condition scene of more approaching truly, high pressure sealing ring-current crude oil wax simulator accurately.
In view of the deficiency that present circuit wax deposition simulator exists, the present invention proposes a kind of device that under still inner high voltage, airtight and temperature controlled conditions, makes crude oil form circulation and carry out the wax deposition simulation, the structure of this device is as shown in Figure 1 and Figure 2.It comprises that one has the seal pot 26 of filler opening 15, oil outlet 27, electric mixer 23, temperature control system and the detection system in the insertion still 26.Airtight still 26 is that jar shape inner bag 6 places suitable for reading connect an oval kettle cover 7 by kettle cover flange 17, motor 13 through coupling 14 connect stirrers 23 and from kettle cover 7 center of top by outer insertion still 26 in; Temperature control system comprises being connected with stirrer 23 to be inserted the internal heater in the still 26 in the lump and is wrapped in inner bag 6 outer chuck 4, thermal insulation layer 3 and shell 2; Detection system comprise from kettle cover 7 feed the pressure gauge 10 in the stills 26, the temperature transducer 21-2 that surveys the oil temperature, temperature transducer slideway 14 and from outside pass thermal insulation layer 3, chuck 4 be affixed on a plurality of temperature transducer sleeve pipes 20 of inner bag 6 outer walls, a plurality of temperature transducer 21-1 and with the supporting patrolling-checking instrument of all temperature transducers.Still 26 in this device covers 7 usefulness flanges 17 and connects sealing, certainly be good seal, can also between flange 17, add seal ring, and filler opening has control valve 16 for 15 times, oil outlet 27 and nitrogen are gone into still mouth 8, nitrogen goes out the control that still mouth 9 also has valve, stirrer 23 is worn kettle cover 7 places and is also wanted encapsulation process, so still 26 can reach the environmental conditions of sealing.Also adopt the measure of inflated with nitrogen in the still 26, make the oil stream secluding air of simulation, this electric heating, electrical testing that also can be in the still provides safer condition certainly.Still internal heater in the temperature control system is to be fixed on the anchor frame anchor formula circulation maker 25 of 23 outer perpendicular sleeve pipes of stirrer at the lower end bifurcated, on frame, be wound with electric-heating belt (line) 18, perpendicular sleeve pipe upper end two annulus that are connected have on it that each links to each other with electric-heating belt (line) 18 two ends with two parallel ring electrical contact slideways 11 of annulus insulation.Again by be fixed on the annulus insert electrode 29 in two arc-spark stands and by extension spring 28 with electrode 29 and 11 sliding contacts of electrical contact slideway.Chuck 4 profiles outside the still 26 are similar to inner bag, be enclosed within inner bag 6 outer backs and around inner bag 6 and in the cover between the chuck 4, coil spiral deflector 5 from top to bottom, and connect with the weldering of inner bag 6 outer walls and chuck 4 inwalls, be connected in chuck 4 bottoms and stretch out a cooling medium and go into running-on 1, be connected in chuck 4 tops one side and stretch out a cooling medium and go out running-on 19; The thermal insulation layer 3 of same bag one similar figures outside chuck 4, the outsourcing steel casing 2 again, fill insulant material in the thermal insulation layer 3.Such temperature control system both can evenly be warmed to required temperature with the test crude oil in the still 26, and still 26 outer walls have chuck 4 to pass to cooling medium simulated environment temperature again and with thermal insulation layer 3 maintenances, realized two kinds of temperature controlling simultaneously.The flow speed control of crude oil is finished by electric mixer 23 in the still 26.The paddle 24 that is installed in stirrer 23 lower ends is anchor formula or closed-in construction.This kind paddle 24 can produce simple circulation, is equipped with the rotation of anchor formula circulation maker 25 in the still again, also is the circulation power-assisted.Still 26 interior crude oil circularize mobile under the drive of electric mixer 23, are equal to crude oil and flow at the pipeline of endless.The rotating speed of regulating motor 13 can be adjusted the speed and the intensity of circulation easily, simulates the flowing state of crude oil in pipeline under various flow velocitys and the pressure.
The test system of this simulator has test two-part of pressure and temperature.Pressure test is realized by the pressure gauge 10 that is installed on the kettle cover 7.It is complicated that the test of temperature is then wanted.Should measure the temperature gradient of still 26 walls, measure in the still 26 temperature gradient of 26 inwalls from the center to the still again.The temperature gradient of surveying still 26 walls is realized by layout temperature transducer 21-1 in a plurality of temperature transducer sleeve pipes 20 of still 26 outer walls.The temperature gradient of surveying in the still 26 then becomes a plurality of temperature transducer 21-2 in 90 ° of tubulose temperature transducer framves that are connected 22 to realize by being installed in anchor formula circulation maker 25 frames with 23 in stirrer.Because stirrer 23, temperature transducer frame 22 and still 26 internal heaters are in rotary state when working always, temperature transducer 21-2 lead-in wire must pass through temperature transducer slideway 14 from temperature transducer frame 22 and perpendicular sleeve pipe and pick out, so lead-in wire can not be many, otherwise temperature transducer slideway 14 will be too many, and it is very complicated that structure can become.Therefore will be harsh in the selection of instrument and circuit, the most satisfactory is exactly to select one-wire bus instrument and related circuit for use.Sensor can be selected a line digital temperature sensor for use, as DS1820, DS18S20, DS18B20, DS1822 etc., is equipped with the monobus temperature polling instrument again, as DZT-512 monobus temperature polling instrument.These type of sensors all are installed in temperature transducer frame 22, in general 10 just passable, temperature transducer 21-2 is as long as two lighting outlets are just passable, temperature transducer slideway 14 also has only 2 certainly, on structure is handled just much more simply.Identical with the electrical contact slideway 11 of still 26 internal heater lighting outlets, promptly above electrical contact slideway 11 annulus, fix two annulus again, two parallel ring temperature transducer slideways 14 with annulus insulation are also arranged on it, also by insert electrode 29 in two arc-spark stands that are fixed on the annulus and by extension spring 28 with electrode 29 and 14 sliding contacts of temperature transducer slideway.The connection of temperature transducer 21-2 and monobus temperature polling instrument is seen product descritption.In fact, a plurality of temperature transducer 21-1 of still 26 outer walls insertion temperature transducer sleeve pipe 20 also adopt a line digital temperature sensor of same model, can a shared monobus temperature polling instrument be patrolled and examined by still 26 inside and outside temperature transducer measured temperatures fully.
Embodiment
Embodiment: with still 26 internal diameter 400mm, high 200mm is an example, and its concrete structure as shown in Figure 1 and Figure 2.Capital equipment and being of a size of: the high 150mm of inner bag, thick 10mm, kettle cover 7 high 50mm, chuck 4 wide 50mm, spiral deflector 5 coil 5 circles in chuck 4, thermal insulation layer 3 wide 50mm, and shell 2 wall thickness 5mm fill asbestos in the thermal insulation layer 3.Motor 13 is selected 1KW's for use, 23 steel pipes of stirrer with Φ 20mm * 2, long 200mm, the outer tube of the outer perpendicular sleeve pipe of axle selects Φ 30 * 5mm steel pipe, long 100mm, anchor formula circulation maker 25 wide 300mm, high 120mm, select for use Φ 10 * 2mm steel pipe curve the anchor shape and with the welding of perpendicular sleeve pipe, electric-heating belt (line) 18 passes perpendicular Socket welding on slideway 11 after twining on the anchor formula circulation maker 25.The steel annulus of four Φ 100mm of parallel weldering outside the still 26 of perpendicular sleeve pipe upper end, the copper ring slideway that after the annulus inboard adds insulation, respectively is connected, the arc-spark stand that on the steel annulus, respectively is connected, interpolation graphite electrode 29 is pressed to slideway by extension spring 28 with electrode 29.Paddle 24 is selected anchor formula oar for use, and the temperature transducer frame 22 that is connected on stirring shaft is selected the steel pipe of Φ 20 * 2mm for use, long 140mm, and mounting temperature sensor 21-2 is totally 6 in it, promptly every one of 20mm cloth.Temperature transducer 21-1 in temperature transducer 21-2 and the temperature transducer sleeve pipe 20 all selects DS1820 one line digital temperature sensor for use, is equipped with DZT-512 monobus temperature polling instrument and makes temperature indication usefulness.This high pressure sealing ring-current crude oil wax simulator is compared with the circular track test device through probationary certificate, and experiment effect is good, can satisfy requirement of experiment fully.
The present invention is in an airtight still 26 that fills nitrogen, make oil sample form circulation, Simulation of Crude Oil long distance in pipeline flows, warm by the oil of still 26 internal heaters heating oil sample simulation line transportation simultaneously, by the ambient temperature of cooling medium simulation pipeline, this has just simulated the actual conditions of long distance pipeline in a slight still 26 in chuck 4.Disposed the detection of necessary Pressure testing and temperature detection, particularly temperature in device again, existing still 26 wall temperature multiple spots detect, and the detection of oil stream temperature gradient in the still 26 is arranged again.Can running parameters such as working pressure, oil temperature, tube wall temperature be set in strict accordance with pre-provisioning request fully, can detect the wax deposition situation of crude oil under the various operating conditions simultaneously.
As known from the above, this simulator is small and exquisite, take up an area of few, device therefor is few, compares with the circuit simulator that but lab space is big, and the equivalent shear strength that oily stream is subjected in equivalent shear strength that oil sample is subjected in the test and the on-the-spot pipeline is suitable, the geometry of simulation test and mechanical condition more approach on-site actual situations, simulate trulyr, laboratory data is accurate, and experimental expenses is few.
Description of drawings
Fig. 1 high pressure sealing ring-current crude oil wax simulator overall pattern
Fig. 2 circulation maker and heating system figure
1---cooling medium is gone into running-on 2---shell wherein
3---thermal insulation layer 4---chuck
5---spiral deflector 6---inner bag
Nitrogen is gone into the still mouth to 7---kettle covers 8---
9---nitrogen goes out still mouth 10---pressure gauge
11---electrical contact slideway 12---coupling
13---motor 14---temperature transducer slideway
15---filler opening 16---control valve
17---kettle cover flange 18---electric-heating belts (line)
19---cooling medium goes out running-on 20---temperature transducer sleeve pipe
21---temperature transducer 22---temperature transducer frame
23---stirrer 24---paddle
25---anchor formula circulation maker 26---still
27---oil outlet 28---extension spring
29---electrode
Claims (8)
1, a kind of high pressure sealing ring-current crude oil wax simulator is characterized in that it comprises that one has the airtight still (26) of filler opening (15), oil outlet (27), electric mixer (23), temperature control system and the detection system in the insertion still (26).
2, according to the described high pressure sealing ring-current of claim 1 wax deposition simulator, it is characterized in that jar shape inner bag (6) place suitable for reading connects oval kettle cover (7) by kettle cover flange (17) and constitutes seal pot (26), motor (13) through coupling (12) connect stirrer (23) from kettle cover (7) center of top by outer insertion still (26) in and sealing, temperature control system comprises being connected with stirrer (23) to be inserted the internal heater in the still (26) in the lump and is wrapped in chuck (4), thermal insulation layer (3) and shell (2) outside the inner bag (6); Detection system comprise from kettle cover (7) lead to pressure gauge (10) in still (26), survey temperature transducer (21-2) in oil temperature a plurality of, temperature transducer slideway (14) and from outside pass a plurality of temperature transducer sleeve pipes (20) that shell (2), thermal insulation layer (3), chuck (4) be affixed on inner bag (6) outer wall, the temperature transducer (21-1) that is loaded on the survey still wall temperature in it and with the supporting patrolling-checking instrument of all temperature transducers.
3, according to claim 1,2 described high pressure sealing ring-current crude oil wax simulator, the paddle (24) that it is characterized in that being installed in stirrer (23) lower end is anchor formula or frame.
4, according to claim 1,2 described high pressure sealing ring-current crude oil wax simulator, it is characterized in that the still internal heater is for being fixed on the anchor frame anchor formula circulation maker (25) of the perpendicular sleeve pipe of stirrer (23) axle lower end bifurcated, on frame, be wound with electric-heating belt (line) (18), the perpendicular upper end of sleeve pipe outside still (26) two annulus that are connected, two electrical contact slideways (11) with the annulus insulation are arranged on it, each links to each other with electric-heating belt (line) (18) two ends, by insert electrode (29) in two arc-spark stands that are fixed on the annulus and by extension spring (28) with electrode (29) and electrical contact slideway (11) sliding contact.
5, according to claim 1,2 described high pressure sealing ring-current crude oil wax simulator, it is characterized in that chuck (4) profile is similar to inner bag (6), be placed in the outer back of inner bag (6) and laterally coil spiral deflector (5) in the cover between the chuck (4) from top to bottom all around at inner bag (6), and connect with the weldering of the inwall of inner bag (6) outer wall and chuck (4), be connected in chuck (4) bottom and stretch out a cooling medium and go into running-on (1), be connected in chuck (4) top one side and stretch out a cooling medium and go out running-on (19), the thermal insulation layer (3) of same bag one similar figures outside chuck (4), fill insulant material in the outsourcing steel casing (2), thermal insulation layer (3).
6, according to claim 1,2 described high pressure sealing ring-current crude oil wax simulator, it is characterized in that going out a pipeline section at a face down bonding of kettle cover (7), its outer end valve that is connected becomes nitrogen to go into still mouth (8), and the pipeline section middle part is welded out a little pipeline section again and become nitrogen to go out still mouth (9) with valve.
7, according to claim 1,2 described high pressure sealing ring-current crude oil wax simulator, the temperature transducer (21-2) that it is characterized in that the test oil temperature is installed in anchor formula circulation maker (25) frame to become in 90 ° of tubulose temperature transducer framves (22) that are connected with stirrer (23) axle, and install many at interval, the lead-in wire of temperature transducer (21-2) from temperature transducer frame (22) penetrate that stirrer (23) up is connected to outside the still (26) on two annulus that are connected outside the perpendicular sleeve pipe always and with the temperature transducer slideway (14) of its insulation on, by insert electrode (29) in two arc-spark stands that are fixed on the annulus and by extension spring (28) with electrode (29) and temperature transducer slideway (14) sliding contact; A plurality of temperature transducers (21-1) of surveying the still wall temperature are inserted into temperature transducer sleeve pipe (20) lining respectively and press close to still (26) outer wall place.
8, according to claim 1,2 described high pressure sealing ring-current crude oil wax simulator, it is characterized in that temperature transducer (21-1), (21-2) are a line digital temperature sensor, the patrolling-checking instrument supporting with it is the monobus temperature polling instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100341801A CN100376837C (en) | 2004-04-27 | 2004-04-27 | High pressure sealing ring current type crude oil wax deposition simulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100341801A CN100376837C (en) | 2004-04-27 | 2004-04-27 | High pressure sealing ring current type crude oil wax deposition simulating device |
Publications (2)
| Publication Number | Publication Date |
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| CN1690504A true CN1690504A (en) | 2005-11-02 |
| CN100376837C CN100376837C (en) | 2008-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100341801A Expired - Lifetime CN100376837C (en) | 2004-04-27 | 2004-04-27 | High pressure sealing ring current type crude oil wax deposition simulating device |
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| CN102309934A (en) * | 2011-07-08 | 2012-01-11 | 江苏秋林重工股份有限公司 | Agitator tank |
| CN102705711A (en) * | 2011-03-28 | 2012-10-03 | 上海空间推进研究所 | Method for suppressing pressure increase phenomenon in closed fluid path pipe network system |
| CN103116015A (en) * | 2013-01-28 | 2013-05-22 | 中国石油大学(华东) | Wax deposition rate measuring device for crude oil |
| CN103728439A (en) * | 2014-01-17 | 2014-04-16 | 中国石油大学(华东) | Shear history simulation experiment device and method for non-Newtonian crude oil |
| CN103968254A (en) * | 2014-04-29 | 2014-08-06 | 中国石油大学(北京) | Buried crude oil pipeline shutdown temperature drop experimental device |
| CN104515836A (en) * | 2014-11-03 | 2015-04-15 | 中国石油天然气集团公司 | Method and device to test anti-scaling and anti-wax precipitation properties of tubular product |
| CN107243311A (en) * | 2017-05-31 | 2017-10-13 | 张家港市科华化工装备制造有限公司 | The reactor of lower agitating device |
| CN110927199A (en) * | 2019-12-20 | 2020-03-27 | 西安石油大学 | Indoor experimental device for high-temperature scaling of crude oil heat exchanger |
| CN112934109A (en) * | 2021-01-29 | 2021-06-11 | 佛山市硕宸机械设备有限公司 | Negative electrode material high-temperature coating granulation equipment |
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| CN2163002Y (en) * | 1992-12-07 | 1994-04-27 | 康俊民 | Self-lubricating high speed magnetic stirring reactor |
| CN2262762Y (en) * | 1995-07-03 | 1997-09-17 | 马勋堂 | Common multifunctional durable lighting lamp bulb |
| CN2415830Y (en) * | 2000-03-17 | 2001-01-24 | 自贡市新源环保产业有限公司 | Agitated reactor |
| CN2569909Y (en) * | 2002-09-13 | 2003-09-03 | 张勇 | Novel autoclave having cooling jacket |
| CN2700882Y (en) * | 2004-04-27 | 2005-05-18 | 中国石油天然气股份有限公司 | High-pressure sealing ring flow type crude oil waxing stimulation device |
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- 2004-04-27 CN CNB2004100341801A patent/CN100376837C/en not_active Expired - Lifetime
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| CN102705711A (en) * | 2011-03-28 | 2012-10-03 | 上海空间推进研究所 | Method for suppressing pressure increase phenomenon in closed fluid path pipe network system |
| CN102309934A (en) * | 2011-07-08 | 2012-01-11 | 江苏秋林重工股份有限公司 | Agitator tank |
| CN103116015A (en) * | 2013-01-28 | 2013-05-22 | 中国石油大学(华东) | Wax deposition rate measuring device for crude oil |
| CN103116015B (en) * | 2013-01-28 | 2014-12-17 | 中国石油大学(华东) | Wax deposition rate measuring device for crude oil |
| CN103728439A (en) * | 2014-01-17 | 2014-04-16 | 中国石油大学(华东) | Shear history simulation experiment device and method for non-Newtonian crude oil |
| CN103968254A (en) * | 2014-04-29 | 2014-08-06 | 中国石油大学(北京) | Buried crude oil pipeline shutdown temperature drop experimental device |
| CN103968254B (en) * | 2014-04-29 | 2016-06-01 | 中国石油大学(北京) | Experimental installation falls in buried oil pipeline stopping transportation temperature |
| CN104515836A (en) * | 2014-11-03 | 2015-04-15 | 中国石油天然气集团公司 | Method and device to test anti-scaling and anti-wax precipitation properties of tubular product |
| CN107243311A (en) * | 2017-05-31 | 2017-10-13 | 张家港市科华化工装备制造有限公司 | The reactor of lower agitating device |
| CN110927199A (en) * | 2019-12-20 | 2020-03-27 | 西安石油大学 | Indoor experimental device for high-temperature scaling of crude oil heat exchanger |
| CN110927199B (en) * | 2019-12-20 | 2022-10-18 | 西安石油大学 | Indoor experimental device for high-temperature scaling of crude oil heat exchanger |
| CN112934109A (en) * | 2021-01-29 | 2021-06-11 | 佛山市硕宸机械设备有限公司 | Negative electrode material high-temperature coating granulation equipment |
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| Publication number | Publication date |
|---|---|
| CN100376837C (en) | 2008-03-26 |
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Effective date of registration: 20211108 Address after: Room 08-10, 6 / F, block a, No. 5, Dongtucheng Road, Chaoyang District, Beijing 100013 Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: 100011 Beijing city Dongcheng District No. 16 Andrew intercontinental building Patentee before: PETROCHINA Co.,Ltd. |