CN101008638A - Method and device for accurate testing of petroleum products questionable points - Google Patents
Method and device for accurate testing of petroleum products questionable points Download PDFInfo
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- CN101008638A CN101008638A CN 200610002626 CN200610002626A CN101008638A CN 101008638 A CN101008638 A CN 101008638A CN 200610002626 CN200610002626 CN 200610002626 CN 200610002626 A CN200610002626 A CN 200610002626A CN 101008638 A CN101008638 A CN 101008638A
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Abstract
This invention relates to one oil product inclination point accurate test method and its device without other type, which comprises temperature control oil tar and constant ring tube path through micro meter pump to form recycle oil sample tube, wherein, the recycle tube uses multiple parallel branch connected to relative closed sample container; it heats the oil tar into 50+-1DEG C for recycle in tube to observe whether there is flow; If the flow temperature is lowered to second observe point, keeping it constant to observe second container till certain observe point sample not move.
Description
Technical field
The present invention is the method for accurate testing and the device of the petroleum products questionable points of test petroleum products questionable points, relates to test not to be covered of other class and petroleum industry technical field.
Background technology
Petroleum products questionable points is a crucial technical indicator in the oil quality characteristic test, its expression be that petroleum products is cooled to the maximum temperature of liquid level when not mobile under test condition.For crude oil, condensation point has determined inlet temperature necessary in pipe conveying procedure, thereby determined also which kind of delivery technology whole delivery line adopts, in case and stopping transportation can allow time of stopping transportation, be the parameter of must emphasis in pipe design and the operational process considering; For product oil diesel oil particularly, it has determined product oil to allow the ambient temperature conditions of using.No matter from which kind of angle, the test of petroleum products questionable points all is crucial.Moreover, precision of test result has directly determined equipment disposition and operation process on engineering, and with operating cost and energy-saving and cost-reducing directly related.Given this, various countries formulate the testing standard that petroleum products questionable points is arranged mostly, with the foundation of following as industry.As according to People's Republic of China's " petroleum products questionable points determination method " (GB/T 510-83), its condensation point assay method is defined as: the test tube (height 160 ± 10mm that oil sample is contained in regulation, internal diameter 20 ± 1mm, outer wall at 30mm at the bottom of the distance has an annular graticule) in, earlier oil sample is heated to 50 ± 1 ℃, when test tube is put into the temperature that is cooled to expect in the sleeve pipe, test tube was tilted 45 ° through 1 minute, whether the observation liquid level moves, then reheat 50 ± 1 ℃ as moving, continue to be cooled to than test temperature last time low 4 ℃ or low temperature more, till its test temperature makes liquid level can stop to move, reheat 50 ± 1 ℃ afterwards again, continue to be cooled to than test temperature last time high 4 ℃ or higher temperature mensuration, till certain test temperature has had liquid level to move, after finding the condensation point temperature range like this, hang down 2 ℃ or the mobile high 2 ℃ of tests again of temperature of ratio with regard to employing than the temperature that moves, so repeatedly, can make liquid level motionless and improve 2 ℃ when liquid level is moved up to definite certain test temperature, just get the condensation point of the motionless temperature of liquid level as sample.And the necessary replication of regulation condensation point, begin test temperature for the second time than measured condensation point is high 2 ℃ for the first time.The difference that its repeatability requires same operator to measure two results is no more than 2 ℃, and the difference of two laboratory results is no more than 4 ℃.As seen from the above, it is numerous and diverse and may cause than mistake to measure program according to national standard.Therefore, in People's Republic of China's oil and gas industry standard " condensation point of crude oil determination method " (SY/T 0541-94), carried out simplifying significantly and having adjusted the criterion of condensation point: regulation is preheating to 50 ± 1 ℃ oil sample behind the test tube of packing into, with the cooling velocity cooling samples of 0.5～1.0 ℃/min when being higher than 8 ℃ of expection condensation points, the flowability of a sample of 2 ℃ of observation is whenever fallen, until with test tube horizontal positioned 5s and the maximum temperature of sample when not flowing is condensation point.In the sector standard, 2～4 test tubes of general use, tilt slightly during regulation observation liquid level, if liquid level moves, then in 3s, put back to sleeve pipe and continue cooling, and as with test tube horizontal positioned 5s and sample when also having mobile sign, then put back to sleeve pipe rapidly and continue 1 ℃ or 2 ℃ of cooling, if do not move, then this temperature is a condensation point, otherwise the sample revision test of changing oil.The same national standard of its repeatability regulation.
No matter be national standard or industry standard, all there is very big defective: for industry standard, after tilting, continue cooling test science not, because moving, liquid level destroyed the structure that crude oil low temperature forms down, surveying can not be accurately again, and is difficult to avoid shaking in moving process or temperature variation does not impact the structure that forms under the crude oil low temperature.For national standard, in case just reheat 50 ± 1 ℃ although its regulation liquid level moves, eliminated the influence of structural failure, but like this numerous and diverse running program time and effort consuming, and under non-airtight condition, will cause the light constituent volatilization and influence test result along with repeating heating.In addition,, under rate of temperature fall faster, be difficult to guarantee that the oil sample central temperature is consistent with the edge, and be difficult to guarantee that the oil sample liquid level is smooth and give and observe liquid level move making troubles because the two all adopts circular test tube.Like this, final condensation point test result is difficult to the accuracy and the degree of accuracy that reach higher.
Summary of the invention
The objective of the invention is to invent a kind of simple to operate, save time, method for accurate testing and device that the oil sample non-structure destroys the high petroleum products questionable points of history, accuracy and accuracy.
With reference to existing standard regulation with container PetroChina Company Limited. product by heating to 50 ± 1 ℃, slowly cool, until with 45 ° of container leans through 1 minute, obtain the oil sample temperature when the oil sample liquid level is motionless in the container, be the clause of condensation point, the present invention realizes that the technical scheme of above-mentioned purpose is to constitute oil sample circulation line through the annulus line 27 of miniature volume pump 26 and insulation with oil tank 30 by the oil tank 30 of temperature-controlled, sample holder 10 with a plurality of arms arranged side by side same number corresponding with placing cryostat 8 in the oil sample circulation line is connected, oil sample in the oil tank 30 is heated to 50 ± 1 ℃, opening miniature volume pump 26 circulates oil sample 3 in circulation line, pipeline to be recycled and cryostat 8 are preheating to when consistent with the oil temperature through temperature controlled water bath, keep sample holder 10 vertical, and oil sample 3 liquid levels are slowly evenly risen, up to cryostat 8 in close when oil sample graticule 36 is concordant on the sample holder 10.Then, regulating temperature controlled water bath makes cryostat 8 temperature be reduced to first observed temperature point of expection condensation point with the speed that is not higher than 0.5 ℃/min, keep constant temperature, will pull and position, level angle at 45, observe whether liquid level flows in this sample holder 10 with first sample holder 10.If liquid level flows, then abandon observing this sample holder 10, and continue to cool to second observed temperature point, keep constant temperature, second sample holder 10 pulled and position, level angle at 45, observe whether liquid level flows in this sample holder 10.By that analogy, till no longer flowing at some observed temperature point oil sample 3 liquid levels.At this moment, satisfy the requirement of measuring accuracy as the difference of this temperature spot observed temperature point last with it, then this temperature spot is the condensation point of the oil sample of testing 3; Do not satisfy the requirement of measuring accuracy as the difference of this temperature spot observed temperature point last with it, then oil sample 3 in the oil tank 30 must be warmed up to 50 ± 1 ℃ again, change oil sample in the sample holder 10, and turn down expection observed temperature point, again test by initial step, up to solidify at some observed temperature point oil samples 3 and with it on till the difference of an observed temperature point satisfies the requirement of measuring accuracy.At some observed temperature points, in a single day only allow to pull the adjuster bar of a sample holder 10 usually, and pull the adjuster bar of some sample holders 10, find that its liquid level flows, then each temperature observation point that reduces is gradually afterwards no longer observed.If all sample holder 10 is all pulled and is not found the sign that liquid level solidifies, then must test again by initial step, turn down each observation station temperature to proper range, till solidifying at some observed temperature point liquid levels.It is prudent that the selection of expection condensation point and observed temperature point is wanted, and not so, the number of times of test will be many, will increase the time of test.If the closing to reality condensation point that the expection condensation point is selected and the quantity of sample holder 10 are abundant, so from the expection condensation point first observed temperature point, the order of magnitude that just can claimed accuracy is the difference between each observed temperature point, observed temperature point time several sample holders 10 that quantity begins for first observed temperature point of reducing to the expection condensation point from oil sample 3 temperature are set, and sample holder 10 that just can be less and less repeated test number of times are finished whole tests.Certainly, if the actual condensation point difference of distance that the expection condensation point is selected is bigger, this is common occurrence in test job, can with the observed temperature point difference choosing in when beginning greatly, the order of magnitude that promptly selects claimed accuracy subsequently is the difference of observed temperature point, so also can reduce the number of times of repeated test,, should avoid the number of times of repeated test as far as possible because repeated test is more time-consuming.In fact because the unlikely too many sample holder 10 that is provided with, also only repeated test is repeatedly under the certain situation of sample holder 10 numbers sometimes.The accuracy of test result and degree of accuracy are to show that by temperature control accuracy and degree of accuracy, temperature accuracy and degree of accuracy, human eye may observe liquid level move the limit of sign and sample holder 10 numbers or the test multiplicity under sample holder 10 numbers one stable condition and determine.
The hot water that program control water-bath is adopted in the control of oil sample 3 temperature of oil tank 30 is being wrapped in round-robin method in the cyclic water jacket 2 outside the oil tank 30 through hot water inlet 1 and hot water outlet 6; All pipelines in the oil sample annulus line 27 all adopt the heat preserving method of outsourcing heat-insulation layer 15; The cool-down method of cryostat 8 is cooling coil 7 is installed in cryostat 8 and is connect with the program control water-bath of low temperature.Clear for observation, or can install the method for magnifier additional in the observation front of cryostat 8, simultaneously the observation front of sample holder 10 with the plane for well.
With the accurate proving installation of the petroleum products questionable points of the method for accurate testing of above-mentioned petroleum products questionable points is the oil tank 30 of outsourcing cyclic water jacket 2 is made of oil sample 3 annulus line 27 of miniature volume pump 26 and insulation circulation line, on oil sample 3 circulation lines, pick out many pipeline sections side by side to 8 li of cryostats, termination one airtight sample holder 10 on the every pipeline section.Concrete formation as shown in Figure 1, be exactly outsourcing cyclic water jacket 2 and have the bottom center of the oil tank 30 that hot water inlet 1 and hot water outlet 6 be connected with program control water-bath to have pipeline section to connect miniature volume pump 26 through oil tank outlet valve 29, miniature volume pump 26 outlet T-Ring shape pipelines 27 also are communicated with it to oil tank 30 tops, begin out a plurality of mouthfuls of a plurality of sample holder valves 25 of connection upwards arranged side by side from miniature volume pump 26 exits of annulus line 27,24,23,22,21, enter cryostat 8 backs are respectively connect a sample holder 10 in cryostat 8 respectively by flexible pipe 11 bottom, be provided with the cooling coil 7 that is connected the program control water-bath of low temperature by the cold liquid of cooling coil inlet 31 and the cold liquid outlet 32 of cooling coil in the cryostat 8, in the cryostat 8 liquid coolant is arranged, and the thermometer 4 of packing at the top.Wherein the forward plane of structure of a row sample holder 10 is clear glass or organic glass observation window or can installs magnifier again additional in the cryostat 8 of cuboid container, and can observe oil sample graticule 36 in each sample holder 10, cooling coil 7 is installed behind the sample holder 10, between cooling coil 7 and the sample holder 10 background light can be installed, with convenient observation.There is cryostat inlet 9 at cryostat 8 tops so that pour into liquid coolant and rectangular mouthful 14 of a plurality of cryostat, and in the inboard of each mouthful or the outside paste lid and face the flexible heat-insulating layer that mouth has joint-cutting so that the adjuster bar 34 of regulating fixing sample holder 10 is by upright position inclination 45.Sample holder 10 (see figure 3)s are cuboid closed containers of clear glass or organic glass material, and its bottom center has oil sample 3 to import and export pipe, and the bottom is seated at the bracket 35 interior and chuckings of sample holder frame 13.The structure of sample holder frame 13 as shown in Figure 2, it is made up of support plate 33, adjuster bar 34, bracket 35 and hinge axis 12, become the porose bracket of flute profile and bottom land central authorities 35 to be connected by hinge axis 12 hinges with the top of rectangle support plate 33 on one side, the bottom of support plate 33 and cryostat 8 inner bottom parts are connected, and bracket 35 is connected at the hinge place and one stretches out adjuster bar 34 outside the cryostat 8 vertically upward and from cryostat rectangular mouthful 14 with bracket 35.Cooperate with adjuster bar 34, the cryostat that cryostat 8 top adjuster bars 34 stretch out corrects and sample holder 10 is in vertical position and 45 ° the position of tilting for rectangular mouthfuls 14 liang.The groove of the bracket 35 here will with sample holder 10 wringing fits.
Description of drawings
The accurate proving installation pie graph of Fig. 1 petroleum products questionable points
Fig. 2 sample holder shelf structure figure
Fig. 3 sample holder synoptic diagram
Wherein
1-hot water advances the 2-cyclic water jacket
3-oil sample 4-temperature juice
5-stirrer 6-hot water outlet
7-cooling coil 8-cryostat
9-cryostat inlet 10-sample holder
11-flexible pipe 12-hinge axis
Rectangular mouthful of 13-sample holder frame 14-cryostat
15-heat-insulation layer 16-pipeline rebound valve
17-recycling can inlet valve 18-recycling can
19-recycling can outlet valve 20-cryostat tapping valve
21-sample holder valve 22-sample holder valve
23-sample holder valve 24-sample holder valve
The miniature volume pump of 25-sample holder valve 26-
27-annulus line 28-valve
29-oil tank outlet valve 30-oil tank
The cold liquid outlet of the cold liquid inlet of 31-cooling coil 32-cooling coil
33-support plate 34-adjuster bar
35-bracket 36-oil sample graticule
Embodiment
Embodiment. also the present invention is further illustrated with this example concrete enforcement of the present invention to be described.The formation of this example as shown in Figure 1, from outside be surrounded by the oil tank 30 bottom center openings of cyclic water jacket 2 to external oil tank outlet valve 29, after threeway connects valve 28 downwards, other end T-Ring shape pipeline 27, miniature volume pump 26, pipeline rebound valve 16 turns back to oil tank 30 tops and constitutes the oil sample circulation line of test, behind miniature volume pump 26, upwards connect 5 sample holder valves 25,24,23,22,21 and respectively connect respectively in the ECL of a sample holder 10 to the cryostat 8, cooling coil 7 is installed in the cryostat 8, the front is a clear glass, sample holder 10 is equipped with background light behind, the rectangular mouth 14 of the cryostat of cryostat inlet 9 and corresponding 5 sample holders 10 is arranged at cryostat 8 tops, cryostat tapping valve 20 is arranged at cryostat 8 bottoms, and circulation line connects recycling can 18 through recycling can inlet valve 17.Wherein oil tank 30 volumes are 1 liter, annulus line 27 is a Φ 10mm steel pipe, the thick poly-ethylbenzene pipe of outsourcing 10mm, miniature volume pump 26 is selected MS-CA ISMATEC wriggling volume pump for use, pipeline rebound valve 16, recycling can inlet valve 17, recycling can outlet valve 19, cryostat tapping valve 20, sample holder valve 21,22,23,24,25, the model of oil tank outlet valve 29 and valve 28 is the manual stainless steel through type of Q41F ball valves, cryostat 8 is 800 * 200 * 100mm cuboid container, the high 80mm of cooling liquid level in the cryostat 8, sample holder 10 is high 100mm, wide 20mm, the cuboid transparent glass container of thick 5mm, the top is airtight, bottom center has outside Φ 3mm, the long 10mm mouth of pipe, flexible pipe 11 is Φ 5mm, long 50mm stainless steel flexible hose, one end is enclosed within outside the mouth of pipe under the sample holder 10, the other end is placed on the outlet of each sample holder valve, and fixedly the sample holder frame 13 of sample holder 10 is welded on the metal base plate in the cryostat 8.The structure of sample holder frame 13 as shown in Figure 2, wherein bracket 35 is converted into 5 * 5mm flute profile and is made a call to a Φ 4mm hole in bottom land central authorities by thick 2mm steel plate, so that the mouth of pipe at 10 ends of sample holder stretches out, support plate 33 is the steel plate of wide 5mm, high 70mm, thick 3mm, its following and cryostat 8 inner bottom platings welding, the top is connected with bracket 35 hinges by the hinge axis 12 of Φ 3mm, up vertically welds the adjuster bar 34 of Φ 3mm, long 160mm at bracket 35 hinge places.The strip mouth at cryostat 8 tops is wide 3mm, long 130mm.In oil tank 30, insert 0.5 liter of Daqing crude oil, starting temperature controlled water bath heats to 50 ℃ to the oil sample in the oil tank 30 3, shut-off valve 28, recycling can inlet valve 17, open oil tank outlet valve 29, pipeline rebound valve 16, starting miniature volume pump 26 makes oil sample 3 enter the oil sample circulation line, be preheating to when consistent with oil temperature to circulation line, order is opened sample holder valve 25,24,23,22,21 and is made oil sample 3 enter 5 sample holders 10 to arrive oil sample graticule 36 positions, close sample holder valve 25,24,23,22,21; Starting the program control water-bath of low temperature starts working cooling coil 7, because of the expection condensation point of Daqing crude oil is approximately about 31 ℃, stop cooling when dropping to 32.5 ℃ so treat cryostat 8 temperature, keep constant temperature 2min, with first sample holder 10 inclination 45s, keep 1min, it is significantly mobile to observe the oil sample liquid level, continues 0.5 ℃ to 32.0 ℃ constant temperature 2min of cooling, and second sample holder 10 tilted 45 °, observing liquid level still has mobile, continuation is with 0.5 ℃ of gradient cooling, constant temperature, step before repeating, reach 1min to the 5th sample holder 10 inclination 45s after, observe the oil sample liquid level and do not move, illustrate that condensation point is between 30.5 ℃ to 31.0 ℃.From the beginning test again, when cryostat 8 temperature drop to 32 ℃, stop cooling specifically, keep constant temperature 2min,, keep 1min, observe liquid level and still have mobile first sample holder 10 inclination 45s; Continue to cool to 31.0 ℃ of constant temperature 2min, second sample holder 10 tilted 45 ° to keep 1min, observe liquid level and still have trace to move; Continue to cool to 30.8 ℃ of constant temperature 2min, the 3rd sample holder 10 tilted 45 ° to keep not observe any mobile of liquid level behind the 1min, therefore testing the condensation point value is 30.8 ℃.This test is successively shared just to be finished smoothly less than two hours.Tested twice again as stated above, the condensation point value is respectively 30.6 ℃, 31.0 ℃ as a result.The repeatability of three test results is no more than 0.5 ℃.Different testers use same device and same method in another laboratory, and same Daqing crude oil is tested, and the difference of test result is no more than 1.5 ℃.
As seen, the inventive method is simple, and is easy and simple to handle, quick, and the device assembling is easy to realize that test oil sample non-structure destroys history, degree of accuracy height, good reproducibility easily.
Claims (8)
1. method for accurate testing of testing the petroleum products questionable points of petroleum products questionable points, comprise container PetroChina Company Limited. product by heating to 50 ± 1 ℃, slowly cool, until with 45 ° of container leans through 1 minute, obtain the oil sample temperature when the oil sample liquid level is motionless in the container, it is characterized in that:
(1) oil tank (30) by temperature-controlled constitutes the oil sample circulation line through the annulus line (27) of miniature volume pump (26) and insulation with oil tank (30), airtight sample holder (10) with a plurality of arms arranged side by side same number corresponding with placing cryostat (8) in circulation line is connected, oil sample in the oil tank (30) is heated to 50 ± 1 ℃, opening miniature volume pump (26) circulates oil sample (3) in circulation line, pipeline to be recycled and cryostat (8) are preheating to when consistent with the oil temperature through temperature controlled water bath, keep sample holder (10) vertical, and make the oil sample liquid level slowly evenly rise up to cryostat (8) in sample holder (10) upward oil sample graticule (36) is concordant;
(2) regulate the temperature controlled water bath temperature, make cryostat (8) temperature be reduced to first observed temperature point of expection condensation point with the speed that is not higher than 0.5 ℃/min, keep constant temperature, first sample holder (10) is pulled and position, level angle at 45, observe whether liquid level flows in this sample holder (10), if liquid level flows, then abandon observing this sample holder (10), and continue to cool to second observed temperature point, keep constant temperature, second sample holder (10) pulled and position, level angle at 45, observe whether liquid level flows in this sample holder (10), by that analogy, till no longer flowing at some observed temperature point liquid levels;
The difference of the observed temperature point observed temperature point last with it when (3) not flowing as oil sample (3) liquid level satisfies the requirement of measuring accuracy, and then this temperature spot is the condensation point of the oil sample of testing;
The difference of the observed temperature point observed temperature point last with it when (4) not flowing as oil sample (3) liquid level does not satisfy the requirement of measuring accuracy, then oil sample (3) in the oil tank (30) must be warmed up to 50 ± 1 ℃ again, change oil sample in the sample holder (10), and turn down expection observed temperature point, again test by initial step, up to solidifying at some observed temperature point oil samples (3) and till the difference of an observed temperature point last with it satisfies the requirement of measuring accuracy;
(5) if all sample holder (10) is all pulled and do not found the sign that liquid level solidifies, then must test again, turn down each observation station temperature to proper range, till solidifying at some observed temperature point liquid levels by initial step.
2. the method for accurate testing of petroleum products questionable points according to claim 1, it is characterized in that from first observed temperature point of expection condensation point, the order of magnitude with claimed accuracy is the difference between each observed temperature point, quantity inferior several sample holders (10) of observed temperature point for first observed temperature point beginning of reducing to the expection condensation point from oil sample (3) temperature are set, or repeated test is repeatedly under the certain situation of sample holder (10) number.
3. the hot water that the method for accurate testing of petroleum products questionable points according to claim 1, oil sample (3) the temperature control that it is characterized in that described oil tank (30) adopt program control water-bath is being wrapped in round-robin method in the cyclic water jacket (2) outside the oil tank (30) through hot water inlet (1) and hot water outlet (6); All pipelines in the annulus line (27) all adopt the heat preserving method of outsourcing heat-insulation layer (15); The cool-down method of cryostat (8) is to be connect with the program control water-bath of low temperature by cooling coil (7) in cryostat (8).
4. accurate proving installation with a kind of petroleum products questionable points of the method for accurate testing of the described petroleum products questionable points of claim 1, it is characterized in that the oil tank (30) of outsourcing cyclic water jacket (2) is made of the annulus line (27) of miniature volume pump (26) and insulation the circulation line of oil sample (3), on circulation line, pick out many pipeline sections side by side to cryostat (8) lining, termination one airtight sample holder (10) on the every pipeline section.
5. the accurate proving installation of petroleum products questionable points according to claim 4, it is characterized in that at outsourcing cyclic water jacket (2) and have the bottom center of the oil tank (30) that hot water inlet (1) and hot water outlet (6) be connected with program control water-bath to have pipeline section to connect miniature volume pump (26) through oil tank outlet valve (29), miniature volume pump (26) outlet T-Ring shape pipeline (27) also is communicated with it to oil tank (30) top, open a plurality of mouthfuls from miniature volume pump (26) exit of annulus line (27) and upwards connect a plurality of sample holder valves (25) side by side, (24), (23), (22), (21), enter cryostat (8) back is respectively connect the sample holder (10) in cryostat (8) respectively by flexible pipe (11) bottom, the cooling coil (7) that connects the program control water-bath of low temperature is arranged in the cryostat (8), and in liquid coolant is housed, thermometer (4) is equipped with at the top.
6. according to the accurate proving installation of claim 4 or 5 described petroleum products questionable points, it is characterized in that described cryostat (8) is the cuboid container, cryostat (8) is clear glass or organic glass at the forward plane of structure of a row sample holder (10), or can install magnifier again additional, sample holder (10) back is equipped with cooling coil (7) simultaneously, between cooling coil (7) and the sample holder (10) background light can be installed, cryostat inlet (9) and rectangular mouthful of a plurality of cryostat (14) are arranged at cryostat (8) top, and inboard or outside subsides lid in each cryostat rectangular mouthful (14) face the flexible heat-insulating layer that mouth has joint-cutting, and cryostat tapping valve (20) is arranged at the bottom.
7. according to the accurate proving installation of claim 4 or 5 described petroleum products questionable points, it is characterized in that described sample holder (10) is the cuboid closed container of clear glass or organic glass material, its bottom center has oil sample (3) to import and export pipe.
8. according to the accurate proving installation of claim 4 or 5 described petroleum products questionable points, it is characterized in that described sample holder frame (13) is by support plate (33), adjuster bar (34), bracket (35) and hinge axis (12) are formed, become the porose bracket (35) of flute profile and bottom land central authorities to be connected by hinge axis (12) hinge with the top of rectangle support plate (33) on one side, the bottom of support plate (33) and cryostat (8) inner bottom part are connected, bracket (35) is connected at the hinge place and one stretches out adjuster bar (34) cryostat (8) outside vertically upward and from cryostat rectangular mouthful (14) with bracket (35), and in the inboard of cryostat rectangular mouthful (14) or the outside post flexible heat-insulating layer with the isometric joint-cutting of mouth.
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| CN2006100026261A CN101008638B (en) | 2006-01-26 | 2006-01-26 | Method and device for accurate testing of petroleum products questionable points |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384926A (en) * | 2010-09-03 | 2012-03-21 | 洪清喜 | Full-automatic freezing point testing method and full-automatic freezing point testing instrument |
| CN105136841A (en) * | 2015-09-22 | 2015-12-09 | 东北石油大学 | Novel crude oil condensation point measurement device and measurement method thereof |
| CN110132903A (en) * | 2019-05-24 | 2019-08-16 | 中国石油大学(北京) | A kind of full-automatic solidification point test device and method |
| CN113866208A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Method and system for determining condensation point of petroleum product |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100247355B1 (en) * | 1996-07-03 | 2000-04-01 | 나가시마 카쭈시게, 노미야마 아키히코 | Freezing point meter and freezing point measuring method |
| CN2722237Y (en) * | 2004-08-06 | 2005-08-31 | 唐祥元 | Condensation (or flow point) detector of petroleum or petroleum product |
| CN2896280Y (en) * | 2006-01-26 | 2007-05-02 | 中国石油天然气股份有限公司 | Precise testing device of condensation point of petroleum product |
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2006
- 2006-01-26 CN CN2006100026261A patent/CN101008638B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384926A (en) * | 2010-09-03 | 2012-03-21 | 洪清喜 | Full-automatic freezing point testing method and full-automatic freezing point testing instrument |
| CN105136841A (en) * | 2015-09-22 | 2015-12-09 | 东北石油大学 | Novel crude oil condensation point measurement device and measurement method thereof |
| CN105136841B (en) * | 2015-09-22 | 2018-08-21 | 东北石油大学 | A kind of novel crude oil crude oil solidifying point measuring device and its measurement method |
| CN110132903A (en) * | 2019-05-24 | 2019-08-16 | 中国石油大学(北京) | A kind of full-automatic solidification point test device and method |
| CN113866208A (en) * | 2020-06-30 | 2021-12-31 | 中国石油化工股份有限公司 | Method and system for determining condensation point of petroleum product |
| CN113866208B (en) * | 2020-06-30 | 2023-12-12 | 中国石油化工股份有限公司 | Method and system for determining condensation point of petroleum product |
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| Publication number | Publication date |
|---|---|
| CN101008638B (en) | 2010-09-29 |
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