CN206818566U - A kind of testing tube of crude oil wax deposition circuit experiment - Google Patents
A kind of testing tube of crude oil wax deposition circuit experiment Download PDFInfo
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- CN206818566U CN206818566U CN201720786130.1U CN201720786130U CN206818566U CN 206818566 U CN206818566 U CN 206818566U CN 201720786130 U CN201720786130 U CN 201720786130U CN 206818566 U CN206818566 U CN 206818566U
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Abstract
The utility model relates to a kind of testing tube of crude oil wax deposition circuit experiment, there is water-bath chuck outside the pipe main body of the testing tube of this crude oil wax deposition circuit experiment, differential pressure gauge is arranged on the both ends of pipe main body, along the axial arranged multiple thermometric groups of pipe main body, each thermometric group nearby installs sampler；Thermometric group includes temperature tube, and temperature tube is inserted into pipe main body, installs multiple temperature sensors along temperature tube length direction, multiple temperature sensors are distributed in pipe main body and water-bath chuck；Sampler includes probe tube, sampler, probe tube stretches out and is exposed to outside heat-insulation layer from pipe main body outer wall, the sample probe of sampler is inserted into pipe main body from probe tube, and sample probe is fixed by hold-doun nut, and seal rubber plug is set between hold-doun nut and probe tube.The utility model can be sampled to the deposit of oil pipe difference radial position, it is not necessary to dismantle testing tube, the test result of acquisition is more reliable.
Description
Technical field：
The utility model relates to the research for crude pipeline transportation process wax deposition, and in particular to a kind of crude oil wax
Deposit the testing tube of circuit experiment.
Background technology：
China abounds with waxy crude oil, and waxy crude oil is during pipe is defeated, and due to the temperature difference between external environment condition be present, crude oil leads to
Tube wall radiating is crossed, causes pipeline is radial and axial certain thermograde to be all present.When waxy crude oil temperature is less than wax precipitation point,
The wax crystalline substance being dissolved in crude oil gradually can be separated out and be deposited on tube wall, be extended with time of delivery, inner-walls of duct gradually forms one
Determine the deposit of thickness, reduce the circulation area of pipeline, reduce the conveying capacity of pipeline, even oil transportation can be caused when serious
Solidifying event of running affairs occurs for pipeline.Therefore, the wax deposition of oil pipeline is accurately grasped, specifies its influence factor and mechanism of action pair
It is all significant in prediction pipeline Wax Sediment Velocity, the rational pigging scheme of formulation.At present, to pipeline wax deposition
Research is mainly using theoretical and experimental method.Comparatively, experimental method can obtain real wax deposit data, and can be directly perceived
Acquisition to the understanding of pipeline wax deposition, and one can be turned at present as the checking means of theoretical study method
The not retrievable important research means of kind.According to existing research, the carbon number of the deposit on wax deposition layer different-thickness divides
The chemical compositions such as cloth are different, in order to analyse in depth the Forming Mechanism of wax deposition layer, it is necessary in different-thickness wax deposition layer it is different
The deposit of position is sampled, and the physicochemical property of deposit is obtained with gas chromatographic analysis or DSC experimental methods etc., conventional
Testing tube can only be sampled, sampling process is cumbersome, and is difficult to the accurate deposition for obtaining different layer thickness by dismantling testing tube
Thing sample, is analyzed, and this just further have impact on the experiment effect of circuit method.
Therefore, on the basis of existing circuit method advantageous feature is retained, if it is possible to test tubular construction is improved, obtained
More comprehensively wax deposition layer distributed data is obtained, it is more efficiently to hold actual temperature control effect, obtain more comprehensively deposit sample
Product, it is possible to further expand the scope of experiment of circuit method, improve the measuring accuracy of circuit method, be more beneficial for improving crude pipeline transportation
The level of process Study on wax deposition, expand its depth of investigation.
The content of the invention：
It is an object of the invention to provide a kind of testing tube of crude oil wax deposition circuit experiment, this crude oil wax deposition circuit
The testing tube of experiment is used to solve that the axial distributed data, no for tying wax-layer thickness in experiment pipeline section can not be obtained in the prior art
The problems such as being easy to Stratified Sampling, effective monitoring can not being carried out to the reliability of actual test result.
The technical solution adopted for the present invention to solve the technical problems is：The test of this crude oil wax deposition circuit experiment
Pipe includes pipe main body, differential pressure gauge, temperature sensor, there is water-bath chuck outside pipe main body, and water-bath chuck is heat-insulation layer outside, differential pressure
Table is arranged on the both ends of pipe main body, and along the axial arranged multiple thermometric groups of pipe main body, each thermometric group nearby installs sampling
Device；Thermometric group includes temperature tube, and temperature tube is inserted into pipe main body, and multiple TEMPs are installed along temperature tube length direction
Device, multiple temperature sensors are distributed in pipe main body and water-bath chuck, the temperature sensor in pipe main body, from pipeline
On main center to tube wall direction, the distance between two neighboring temperature sensor successively decreases successively；Sampler include probe tube,
Sampler, probe tube stretch out and are exposed to outside heat-insulation layer from pipe main body outer wall, and the sample probe of sampler inserts from probe tube
Into pipe main body, sample probe is fixed by hold-doun nut, and seal rubber plug is set between hold-doun nut and probe tube.
Water-bath chuck is provided with circulating water intake and circulating water outlet in such scheme, passes through circulating water intake and recirculated water
Outlet be connected with constant water bath box, can by constant water bath box into water-bath chuck driving cycle water, control test tube wall
Temperature.
The utility model has the advantages that：
1st, the utility model has adjustable length due to setting probe tube in the axially distinct position of pipe main body in probe tube
Sample probe, so as to be sampled to the deposit of oil pipe difference radial position, this kind of sampling mode implementation process is simple,
Testing tube need not be dismantled, avoids to testing tube inside deposit form and structural damage, can be obtained test result
It is more reliable.
2nd, the utility model is disposed with thermometric group on the axially different position of pipe main body, available for water-bath outside oil pipe
The test of circulating water temperature in chuck, it is possible thereby to which more efficiently grasp actual temperature control effect, temperature control is adjusted on this basis
Temperature, the experimental data of acquisition can be made more reliable..
3rd, the thermometric group of the axially distinct position of the utility model pipe main body can be realized to oil pipe radial temperature profile
Test, based on the oil pipe radial temperature data obtained, according to the thermal conductivity factor of wax deposition layer, wax deposition layer can be calculated indirectly
Thickness, while be also beneficial to analyze wax deposition to the affecting laws of pipe heat-transfer characteristic.Due to being axially distinct in pipe main body
Location arrangements thermometric group, so the wax deposition layer thickness profile data of testing tube axial direction can be obtained.
Brief description of the drawings：
Fig. 1 is sectional view of the utility model along testing tube axial direction；
Fig. 2 is sectional view of the utility model along testing tube radial direction；
Fig. 3 is the schematic diagram of sampler in the utility model.
1-pipe main body, 2-differential pressure gauge, 3-thermometric group, 4-temperature sensor, 5-probe tube, 6-sampler, 7-
Water-bath chuck, 8-circulating water intake, 9-circulating water outlet, 10-heat-insulation layer, 11-computer, 12-pull bar, 13-take
Sample device socket, 14-seal rubber plug, 15-hold-doun nut, 16-sample probe.
Embodiment：
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1 and Figure 2, the testing tube of this crude oil wax deposition circuit experiment include pipe main body 1, differential pressure gauge 2,
Temperature sensor 4, pipe main body 1 have water-bath chuck 7 outside, are heat-insulation layer 10 outside water-bath chuck 7, water-bath chuck 7 is provided with circulation
Water inlet 8 and circulating water outlet 9, are connected by circulating water intake 8 and circulating water outlet 9 with constant water bath box, can pass through perseverance
Warm water bath cabinet driving cycle water into water-bath chuck 7, the temperature of control test tube wall.Differential pressure gauge 2 is arranged on pipe main body 1
Both ends, for testing the pressure differential at testing tube both ends.Along the axial arranged multiple thermometric groups 3 of pipe main body 1, each thermometric
Group 3 nearby all installs sampler.The sample probe 16, Ke Yiyong of an adjustable length is fitted with each sampler
In the sampling to oil pipe difference radial position deposit.After obtaining sample, it would know that by gas chromatographic analysis or DSC experiments
The physicochemical property of different tube wall diverse location deposits.
Thermometric group 3 includes temperature tube, and temperature tube is inserted into pipe main body 1, and multiple temperature are installed along temperature tube length direction
Sensor 4 is spent, multiple temperature sensors 4 are distributed in pipe main body 1 and water-bath chuck 7, and the temperature in pipe main body 1 passes
Sensor, from the center of pipe main body 1 to tube wall direction, the distance between two neighboring temperature sensor 4 successively decreases successively.Pipeline master
Temperature sensor 4 in body 1, in addition to temperature sensor 4 is arranged in inside pipe wall, according to further away from tube wall, adjacent sensors spacing
Bigger principle is along oil pipe radial arrangement, and this group of sensor can obtain the radial symmetry gradient of oil pipe, so as to according to knot
The fuel factor of wax layer calculates knot wax-layer thickness indirectly.Operative sensor is arranged in the water-bath chuck 7 of testing tube, for following
Ring coolant-temperature gage is tested, and can monitor actual temperature control effect, and it is more reliable to adjust circulating water temperature on this basis.Temperature passes
Sensor 4 uses temperature sensors of high precision.
Refering to Fig. 3, sampler includes probe tube 5, sampler 6, and probe tube 5 stretches out and exposed from the outer wall of pipe main body 1
In outside heat-insulation layer 10, the sample probe 16 of sampler 6 is inserted into pipe main body 1 from probe tube 5, and sample probe 16 passes through fixation
Nut 15 is fixed, and seal rubber plug 14 is set between hold-doun nut 15 and probe tube 5.Sampler 6 is by pull bar 12, sampler socket
13, sample probe 16 forms, and hold-doun nut 15 is placed on seal rubber plug 14 and tightened, and pressure is excessive when preventing from running in pipeline
And pushed up out plug.
Each temperature sensor 4 need to be connected with computer 11 using the utility model experiment, and the other each parts of connection
Connect and compose crude oil wax deposition circuit experimental provision, during experiment, first, experiment oil sample is heated, reaches experiment temperature
Degree.The temperature of regulating thermostatic water bath simultaneously, its recirculated water driven is set to be followed by assigned temperature in the water-bath chuck 7 of testing tube
Ring,, can be according to the thermometric of the axially distinct position of testing tube during this so as to control test tube wall to reach predetermined temperature
The data that degree obtains judge temperature control effect.By the oil sample of heating, enter after the pressurization of pump in testing tube, oil stream flows through oil
Sedimentary is slowly formed while pipe on tube wall.Increase with the thickness of sedimentary, the pressure difference increase at testing tube both ends, Ke Yigen
The average knot wax-layer thickness on flowline is calculated according to the pressure difference change at testing tube both ends.In addition, according to axially distinct on testing tube
The thermometric group 3 of position on the premise of wax deposition layer thermal conductivity factor is obtained, can calculate testing tube axial direction according to thermal conduction study formula
Knot wax-layer thickness at diverse location.After experiment is carried out to a certain extent, oil transfer pump can be closed, stops oil stream in testing tube
Fluid stopping is moved, and the deposit that oil pipe difference radial position is inserted using sampler 6 is sampled, can be according to gas after obtaining oil sample
Chromatography analysis method or DSC experiments measure the physicochemical property of deposit, judge the property of pipeline wax deposit, analyze the shape of wax deposit
Into and development mechanism.
The utility model may apply in crude oil wax deposition circuit experimental provision, obtain crude pipeline transportation process wax deposition thickness
The regularity of distribution of degree, and test physicochemical property can be sampled to the deposit of tube wall different layers position, help to analyze crude oil pipe
The wax deposition in road, the formation mechenism of wax deposit to be sought, there is rational in infrastructure, deft design, experiment condition control is more accurate,
The advantages that test data that can be obtained is enriched, sample point is comprehensive.
Claims (2)
- A kind of 1. testing tube of crude oil wax deposition circuit experiment, it is characterised in that：This crude oil wax deposition circuit experiment Testing tube includes pipe main body（1）, differential pressure gauge（2）, temperature sensor（4）, pipe main body（1）There is water-bath chuck outside（7）, water-bath Chuck（7）Outer is heat-insulation layer（10）, differential pressure gauge（2）Installed in pipe main body（1）Both ends, along pipe main body（1）It is axial arranged Multiple thermometric groups（3）, each thermometric group（3）Sampler is all nearby installed；Thermometric group（3）Including temperature tube, temperature tube insertion To pipe main body（1）In, multiple temperature sensors are installed along temperature tube length direction（4）, multiple temperature sensors（4）It is distributed in Pipe main body（1）With water-bath chuck（7）In, in pipe main body（1）Interior temperature sensor（4）, from pipe main body（1）Center To tube wall direction, two neighboring temperature sensor（4）The distance between successively decrease successively；Sampler includes probe tube（5）, take Sample device（6）, probe tube（5）From pipe main body（1）Outer wall stretches out and is exposed to heat-insulation layer（10）Outside, sampler（6）Sampling visit Pin（16）From probe tube（5）It is inserted into pipe main body（1）It is interior, sample probe（16）Pass through hold-doun nut（15）It is fixed, fixed spiral shell Cap（15）With probe tube（5）Between seal rubber plug is set（14）.
- 2. the testing tube of crude oil wax deposition circuit experiment according to claim 1, it is characterised in that：Described water-bath folder Set（7）It is provided with circulating water intake（8）And circulating water outlet（9）, pass through circulating water intake（8）And circulating water outlet（9）With perseverance Warm water bath cabinet connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720786130.1U CN206818566U (en) | 2017-07-02 | 2017-07-02 | A kind of testing tube of crude oil wax deposition circuit experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720786130.1U CN206818566U (en) | 2017-07-02 | 2017-07-02 | A kind of testing tube of crude oil wax deposition circuit experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206818566U true CN206818566U (en) | 2017-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720786130.1U Expired - Fee Related CN206818566U (en) | 2017-07-02 | 2017-07-02 | A kind of testing tube of crude oil wax deposition circuit experiment |
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| CN (1) | CN206818566U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506737A (en) * | 2018-03-26 | 2018-09-07 | 山西省交通建设工程监理有限责任公司 | Portable tunnel fire protection pipeline leakage temperature-detecting device and its detection method |
| CN110108512A (en) * | 2019-04-28 | 2019-08-09 | 辽宁石油化工大学 | A kind of sampling measuring thickness device and method suitable for different spatial wax deposit in petroleum pipeline |
| CN111623896A (en) * | 2020-05-24 | 2020-09-04 | 西安交通大学 | Supercritical water on-line flow testing device |
| CN112816517A (en) * | 2019-11-18 | 2021-05-18 | 中国石油天然气股份有限公司 | Wax precipitation experiment system and wax precipitation cylinder |
-
2017
- 2017-07-02 CN CN201720786130.1U patent/CN206818566U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506737A (en) * | 2018-03-26 | 2018-09-07 | 山西省交通建设工程监理有限责任公司 | Portable tunnel fire protection pipeline leakage temperature-detecting device and its detection method |
| CN110108512A (en) * | 2019-04-28 | 2019-08-09 | 辽宁石油化工大学 | A kind of sampling measuring thickness device and method suitable for different spatial wax deposit in petroleum pipeline |
| CN110108512B (en) * | 2019-04-28 | 2021-09-24 | 辽宁石油化工大学 | Sampling thickness measuring device and method suitable for wax deposits at different spatial positions in oil pipe |
| CN112816517A (en) * | 2019-11-18 | 2021-05-18 | 中国石油天然气股份有限公司 | Wax precipitation experiment system and wax precipitation cylinder |
| CN112816517B (en) * | 2019-11-18 | 2022-12-02 | 中国石油天然气股份有限公司 | Wax precipitation experiment system and wax precipitation cylinder |
| CN111623896A (en) * | 2020-05-24 | 2020-09-04 | 西安交通大学 | Supercritical water on-line flow testing device |
| CN111623896B (en) * | 2020-05-24 | 2021-11-16 | 西安交通大学 | Supercritical water on-line flow testing device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 Termination date: 20180702 |
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| CF01 | Termination of patent right due to non-payment of annual fee |