CN211206150U - Test tube for wax deposition loop experiment of wax-containing crude oil - Google Patents
Test tube for wax deposition loop experiment of wax-containing crude oil Download PDFInfo
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- CN211206150U CN211206150U CN201922273179.9U CN201922273179U CN211206150U CN 211206150 U CN211206150 U CN 211206150U CN 201922273179 U CN201922273179 U CN 201922273179U CN 211206150 U CN211206150 U CN 211206150U
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- pipe fitting
- wax
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- crude oil
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Abstract
The utility model discloses a test tube that wax-bearing crude oil wax deposit ring says and experiments usefulness, this kind of test tube main part that wax-bearing crude oil wax deposit ring says and experiments usefulness passes through threaded connection by five sections pipe fittings and constitutes. The one end of test tube main part left end pipe fitting is provided with the internal thread, and the one end of right-hand member pipe fitting is provided with the external screw thread, and the both ends of middle part pipe fitting are provided with internal thread and external screw thread respectively. The utility model can disassemble the main body of the test tube, measure the wax deposition amount by sectional weighing, and is convenient for analyzing the wax deposition rule of the test tube along the axis direction; the wax deposition condition of each section of pipe fitting can be directly observed, so that the wax deposition state and the wax deposition form are visualized; meanwhile, wax deposits at different axial and radial positions of each section of pipe fitting can be sampled, and more comprehensive deposit sample and wax deposition layer distribution characteristics can be obtained.
Description
Technical Field
The utility model relates to a be arranged in the research of wax deposit law of wax-bearing crude oil transportation in-process, concretely relates to test tube that wax-bearing crude oil wax deposit ring road was used in experiments.
Background
In a pipeline conveying system of the wax-containing crude oil, when the temperature of the pipe wall is lower than the oil temperature and lower than the wax precipitation point temperature of the crude oil, wax molecules dissolved in the crude oil can be separated out to form crystal grain agglomeration, and move to the pipe wall under the driving of factors such as temperature difference and the like to form a wax precipitation layer, namely wax deposition. The wax deposition reduces the flow cross section of the pipeline and increases the pipeline conveying pressure, thereby reducing the pipeline transportation capacity, increasing the pipeline cleaning frequency and even blocking the pipeline in serious cases, which inevitably causes great loss to the petroleum economy and seriously damages the environment. Therefore, the method has important practical significance for accurately mastering the wax deposition rule of the oil pipeline and determining the influence factors and action mechanism of the wax deposition rule, predicting the wax deposition rate of the pipeline, ensuring the safe transportation of the pipeline and formulating a reasonable pipeline cleaning scheme. At present, theoretical analysis, numerical simulation and experimental methods are mainly adopted for researching the wax deposition rule of the pipeline. In contrast, the experimental method can obtain real wax deposition data, intuitively obtain knowledge of the pipeline wax deposition rule, and serve as a verification means of a theoretical analysis method, so that the experimental method becomes an indispensable necessary research means at present. According to the existing research, the chemical compositions such as carbon number distribution and the like of deposits on different axial and radial positions of a wax deposition layer of a pipeline are different, in order to deeply analyze the formation mechanism of the wax deposition layer, the deposits at different positions in the wax deposition layer need to be sampled, the physicochemical properties of the deposits are obtained by a gas chromatography method or a DSC experimental method and the like, the conventional test tube can only sample the deposits close to two ends of the pipeline, the analysis of the deposits at different positions in the wax deposition layer in the middle of the pipeline is difficult to obtain, and the test effect of a loop experimental method is influenced.
Therefore, on the basis of keeping the advantages and the characteristics of the existing loop experiment method, if the test tube structure can be improved to obtain more comprehensive wax precipitation layer distribution characteristics and obtain more comprehensive sediment samples, the test range of the loop experiment method can be further expanded, the test precision of the loop experiment method is improved, the level of researching the wax precipitation law in the wax-bearing crude oil pipe transportation process is favorably improved, and the research depth of the wax precipitation law is expanded.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a test tube for wax-containing crude oil wax deposition loop experiment in order to solve the above-mentioned problem.
The utility model discloses a following technical scheme realizes above-mentioned purpose, and this kind of test tube that wax-bearing crude oil wax deposit ring says that experiments are used includes left end pipe fitting, middle part pipe fitting one, middle part pipe fitting two, middle part pipe fitting three, right-hand member pipe fitting.
The pipe fitting comprises a left end pipe fitting and a right end pipe fitting, and is characterized in that a double-groove I is arranged on the outer wall of one end of the left end pipe fitting, an external thread I is arranged on the inner wall of one end of the inner thread I and the inner wall of one end of the middle pipe fitting, the other end of the middle pipe fitting is provided with an external thread II which is arranged on the inner wall of one end of the inner thread II and the inner wall of one end of the middle pipe fitting II, the other end of the middle pipe fitting is provided with an external thread III which is arranged on the inner wall of one end of the inner thread III and the inner wall of one end of the middle pipe fitting III, the.
The pipe fitting comprises a left end pipe fitting and a right end pipe fitting, and is characterized in that a single groove I is arranged on the outer wall of the left end pipe fitting, a single groove II is arranged on the outer wall of the middle pipe fitting I, a single groove III is arranged on the outer wall of the middle pipe fitting II, a single groove IV is arranged on the outer wall of the middle pipe fitting III, and a single groove V is arranged on the outer wall of the right end pipe fitting.
The utility model discloses following beneficial effect has:
1. the utility model discloses the test tube main part passes through threaded connection by five sections pipe fittings and constitutes, and threaded connection department leakproofness is good.
2. The utility model discloses the test tube main part can be dismantled in the segmentation to can take a sample to the deposit of the different radial and axial position of oil pipe, obtain more comprehensive deposit sample, but while direct observation wax deposition state and distribution characteristic.
3. The utility model discloses all be provided with single recess on each section pipe fitting outer wall of constituteing the test tube main part, be convenient for clip the pipe fitting with the pliers and dismantle and assemble.
4. The utility model discloses all be provided with the double flute on left end pipe fitting and right-hand member pipe fitting outer wall, be convenient for be connected with other parts of loop experiment device.
Drawings
FIG. 1 is an axial sectional view of the whole structure of the test tube of the present invention;
FIG. 2 is an axial sectional view of the left end pipe fitting of the test tube of the present invention;
FIG. 3 is an axial sectional view of the middle pipe fitting of the test tube of the present invention;
FIG. 4 is a two-axial sectional view of the middle pipe fitting of the test tube of the present invention;
fig. 5 is a three-axial sectional view of the middle pipe fitting of the test tube of the present invention;
figure 6 is the utility model discloses test tube right-hand member pipe fitting axial cross-section.
In the figure: 1. left end pipe fitting, 2, middle part pipe fitting one, 3, middle part pipe fitting two, 4, middle part pipe fitting three, 5, right-hand member pipe fitting, 6, double flute one, 7, double flute two, 8, single flute one, 9, single flute two, 10, single flute three, 11, single flute four, 12, single flute five, 13, left end pipe fitting internal thread one, 14, middle part pipe fitting external thread one, 15, middle part pipe fitting internal thread two, 16, middle part pipe fitting external thread two, 17, middle part pipe fitting two internal thread three, 18, middle part pipe fitting three external thread three, 19, middle part pipe fitting three internal thread four, 20, right-hand member pipe fitting external thread four.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-6, the test tube for wax-containing crude oil wax deposition loop experiment comprises a left end tube (1), a middle tube (2), a middle tube (3), a middle tube (4) and a right end tube (5).
Be provided with double flute one (6) on the one end outer wall of left end pipe fitting (1), the other end is provided with external screw thread one (14) that sets up on the one end inner wall of internal thread one (13) and middle part pipe fitting (2) and is connected, the other end of middle part pipe fitting (2) is provided with external screw thread two (16) that sets up on the one end inner wall of internal thread two (15) and middle part pipe fitting two (3) and is connected, the other end of middle part pipe fitting two (3) is provided with external screw thread three (18) that set up on the one end inner wall of internal thread three (17) and middle part pipe fitting three (4) and is connected, the other end of middle part pipe fitting three (4) is provided with external screw thread four (20) that set up on the one end inner wall of internal thread four (19) and right-hand member pipe fitting (5) and is connected, is.
The pipe fitting is characterized in that a single groove I (8) is arranged on the outer wall of the left end pipe fitting (1), a single groove II (9) is arranged on the outer wall of the middle pipe fitting I (2), a single groove III (10) is arranged on the outer wall of the middle pipe fitting II (3), a single groove IV (11) is arranged on the outer wall of the middle pipe fitting III (4), and a single groove V (12) is arranged on the outer wall of the right end pipe fitting (5).
The utility model discloses when using, need to be connected test tube main part and other each parts and constitute wax-bearing crude oil wax deposit ring road experimental apparatus, during the experiment, at first heat the experiment oil appearance, make it reach the experiment temperature. And simultaneously, adjusting the temperature of the constant-temperature water bath tank to enable the pipe wall of the test pipe immersed in the constant-temperature water bath to reach a preset temperature. The heated oil sample is pressurized by an oil transfer pump and then enters a test tube, and a deposition layer is gradually formed on the tube wall while the oil flow flows through the oil tube. And when the experiment is carried out to a certain degree, the oil transfer pump is closed, so that the oil flow in the test pipe stops flowing. After the air with certain pressure sweeps the loop experiment device, the test tube is taken down, the whole test tube is weighed to calculate the wax deposition amount, each section of the disassembled pipe fitting is also respectively weighed to calculate the wax deposition amount of each section, and simultaneously, the wax deposition condition can be directly observed. And (3) sampling the sediments at different axial and radial positions of each section of the disassembled pipe fitting by adopting a scraper, obtaining an oil sample, measuring the physicochemical property of the sediments according to a gas chromatographic analysis method or a DSC (differential scanning calorimetry) experiment, judging the property of wax deposition of the pipeline, and analyzing the formation and development mechanism of the wax deposition.
The utility model discloses can be applied to in the wax-bearing crude oil wax deposit ring channel experimental apparatus, acquire wax layer thickness distribution law in the wax-bearing crude oil pipe transportation process to can sample the deposit of the different radial and axial position of pipe wall, test physicochemical property helps the wax deposit law of analysis wax-bearing crude oil pipeline, explore the sedimentary formation mechanism of wax, it is visual to have the wax deposit situation, test tube structure is reasonable, the design is exquisite, the test data that can acquire is abundant, advantages such as the sampling point is comprehensive.
Claims (3)
1. The utility model provides a test tube that experimental usefulness of wax-containing crude oil wax deposit ring road which characterized in that: the test tube for the wax-containing crude oil wax deposition loop experiment comprises a left end pipe fitting (1), a middle pipe fitting I (2), a middle pipe fitting II (3), a middle pipe fitting III (4) and a right end pipe fitting (5).
2. The test tube for wax-containing crude oil wax deposition loop experiment according to claim 1, wherein: be provided with double flute one (6) on the one end outer wall of left end pipe fitting (1), the other end is provided with external screw thread one (14) that sets up on the one end inner wall of internal thread one (13) and middle part pipe fitting (2) and is connected, the other end of middle part pipe fitting (2) is provided with external screw thread two (16) that sets up on the one end inner wall of internal thread two (15) and middle part pipe fitting two (3) and is connected, the other end of middle part pipe fitting two (3) is provided with external screw thread three (18) that set up on the one end inner wall of internal thread three (17) and middle part pipe fitting three (4) and is connected, the other end of middle part pipe fitting three (4) is provided with external screw thread four (20) that set up on the one end inner wall of internal thread four (19) and right-hand member pipe fitting (5) and is connected, is.
3. The test tube for wax-containing crude oil wax deposition loop experiment according to claim 1, wherein: the pipe fitting is characterized in that a single groove I (8) is arranged on the outer wall of the left end pipe fitting (1), a single groove II (9) is arranged on the outer wall of the middle pipe fitting I (2), a single groove III (10) is arranged on the outer wall of the middle pipe fitting II (3), a single groove IV (11) is arranged on the outer wall of the middle pipe fitting III (4), and a single groove V (12) is arranged on the outer wall of the right end pipe fitting (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273179.9U CN211206150U (en) | 2019-12-17 | 2019-12-17 | Test tube for wax deposition loop experiment of wax-containing crude oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273179.9U CN211206150U (en) | 2019-12-17 | 2019-12-17 | Test tube for wax deposition loop experiment of wax-containing crude oil |
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| Publication Number | Publication Date |
|---|---|
| CN211206150U true CN211206150U (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922273179.9U Expired - Fee Related CN211206150U (en) | 2019-12-17 | 2019-12-17 | Test tube for wax deposition loop experiment of wax-containing crude oil |
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| CN (1) | CN211206150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029882A (en) * | 2021-03-23 | 2021-06-25 | 西南石油大学 | Wash convenient visual combination formula constant temperature particle settlement experimental apparatus |
-
2019
- 2019-12-17 CN CN201922273179.9U patent/CN211206150U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029882A (en) * | 2021-03-23 | 2021-06-25 | 西南石油大学 | Wash convenient visual combination formula constant temperature particle settlement experimental apparatus |
| CN113029882B (en) * | 2021-03-23 | 2022-02-25 | 西南石油大学 | Wash convenient visual combination formula constant temperature particle settlement experimental apparatus |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200807 Termination date: 20201217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |