CN208076339U - A kind of experiment circuit device of waxy crude oil wax deposit test - Google Patents
A kind of experiment circuit device of waxy crude oil wax deposit test Download PDFInfo
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- CN208076339U CN208076339U CN201820416138.3U CN201820416138U CN208076339U CN 208076339 U CN208076339 U CN 208076339U CN 201820416138 U CN201820416138 U CN 201820416138U CN 208076339 U CN208076339 U CN 208076339U
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- wax deposit
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Abstract
The utility model discloses a kind of waxy crude oil wax deposit test experiment circuit device, it can be achieved that waxy crude oil and water-oil emulsion the wax deposit characteristic under pipe flow condition test.Three pipelines in parallel are respectively set in test section and reference section, and caliber is different, can study affecting laws of the caliber to waxy crude oil wax deposit.Valve is arranged in the pipe ends of test section and reference section, and detachable experimental channel weighing measurement wax deposit keeps experimental result more accurate, while can directly observe wax deposit state.Sampling valve is arranged in circuit end, can obtain tube fluid in real time.Compared with existing wax deposit measuring device, the utility model have the characteristics that can to carry out the experiment of multi-pipe-diameter wax deposit, the visualization of wax deposit form, result it is accurate it is reliable, on-line period, functional, degree of variation are high, flow is simple, flexible and convenient operation.
Description
Technical field
The utility model belongs to the technical field of waxy crude oil physical characteristic, more particularly to a kind of waxy crude oil wax deposit
The experiment circuit device of test.
Background technology
Pipeline transportation is the most important means of transportation of crude oil, there is that throughput rate is big, low energy consumption, fed distance is long.From pipe
The angle of road conveying can substantially be divided into crude oil low low viscous crude oil, gelatinous crude oil, the height of coagulating of lightweight by flow behavior and glue heavy original
Oil.The condensation point of gelatinous crude oil is higher, generally higher related with its wax content.Wax mass fraction is usually less than to 2.5% crude oil
Referred to as low wax crude oil, 2.5%~10% referred to as waxy crude oil are known as high-wax oil higher than 10%.The crude oil of domestic product
In the majority with easily solidifying high glutinous waxy crude oil, waxy crude oil generally has the characteristics such as condensation point is high, viscosity is big, mobility is poor, in conveying work
The method that heating is typically chosen in skill improves its mobility, and often in the presence of conveying cost, higher, throughput rate changes such conveying technique
The problem that area requirement is higher, stopped flow injection analysis is more difficult.During wax-containing oil pipe heated transportation, oil temperature is gradually reduced,
Wax crystalline substance solubility is gradually reduced, wax after oil temperature is down to wax precipitation point in crude oil start crystallization be precipitated, often can on the inside of tube wall shape
At wax deposit layer, to reduce pipeline flow section, increase pipe friction, reduction conveying capacity, for the safe transport band of pipeline
Carry out hidden danger.Wax crystallization is reduced with constant temperature, finally mutually is connected to form reticular structure, seriously affects crude oil fluidity, even
Pipeline is caused to arrhea accident.The measure for reducing security risk in engineering is generally regular pigging.Therefore, the wax of waxy crude oil is studied
Deposition characteristics are particularly important the determination of period of removing the wax.
For the wax deposit characteristic of research waxy crude oil in the duct, Huang opens jade and proposes a kind of wax deposit experiment circuit device
(Huang Qiyu, Zhang Jingjun, Gao Xuefeng wait Study on wax deposition of Daqing crude oil [J] petroleum journals, 2006,27 (4):125-
129.).It is based on surveying to circuit, mass flowmenter metered flow is tested using the crude oil in peristaltic pump or screw pump driving oil tank
The pressure drop of examination section and reference section can obtain wax deposit thickness.There are main problems to be for it, and wax deposit thickness, knot are calculated merely with pressure drop
Fruit error is larger, and can not directly observe wax deposit state.One group of test section and reference section is only arranged in experiment circuit, can not study
Under the conditions of different tube diameters, changing rule of the waxy crude oil in Guan Liuzhong wax deposits.The experimental provision flow is complicated, and equipment is superfluous
It is remaining, it is unfavorable for experimental implementation.
Invention content
In order to overcome the deficiencies of existing technologies, the purpose of this utility model is to provide a kind of test of waxy crude oil wax deposit
Test circuit device.
The utility model can realize the test of the wax deposit characteristic under pipe flow condition to waxy crude oil and water-oil emulsion.Oil
Electric mixing device is set in tank can prepare crude oil or water-oil emulsion, be driven using peristaltic pump in the fluid to circuit in oil tank,
Mass flowmenter metered flow, two differential pressure pick-ups measure the pressure drop data of test section and reference section.Test section and reference section
Three pipelines in parallel are respectively set, caliber is different, can study affecting laws of the caliber to waxy crude oil wax deposit.Test
Valve is arranged in the pipe ends of section and reference section, and detachable experimental channel weighing measurement wax deposit keeps experimental result more accurate,
It can directly observe wax deposit state simultaneously.Sampling valve is arranged in circuit end, can obtain tube fluid in real time.
The specific technical solution of the utility model is as follows：
A kind of experiment circuit device of waxy crude oil wax deposit test, including two parts of sample system and circuit system；
The sample system includes the first water-bath, oil tank and blowdown valve；First water-bath is connected with the outer layer chuck of oil tank, can control
Oil tank temperature；The blowdown valve is located at tank bottom, can discharge pot liquid；The circuit system includes mainly peristaltic pump, matter
Amount flowmeter, test pipeline section, the first differential pressure pick-up, third water-bath, reference pipeline section, the second differential pressure pick-up, takes the second water-bath
Sample valve and connecting line.The peristaltic pump and oil tank can provide power for system；The measurable fluid stream of mass flowmenter
Amount；The both ends of the first differential pressure pick-up connecting test pipeline section, test pipeline section are positioned in the second water-bath, the first differential pressure sensing
Device can measure the pressure drop of test pipeline section, the temperature of the second water-bath controllable testing pipeline section；The second differential pressure pick-up connection ginseng
Than the both ends of pipeline section, reference pipeline section is positioned in third water-bath, and the second differential pressure pick-up can measure the pressure drop of reference pipeline section, third
Water-bath can control the temperature of reference pipeline section；The sampling valve is placed in circuit end, can obtain fluid sample in real time.
The oil tank top is equipped with electric mixer, for stirring grease system, accelerates oil mixing with water speed.
The oil tank is equipped with outer layer chuck, and circulator bath is for controlling experimental temperature in tank.
The oil tank inlet and exit setting are across pipeline, it can be achieved that the more sealing and circulating flow of tank.
The test pipeline section is equipped with three pipelines in parallel, and the caliber of three pipelines is different, and every pipeline both ends setting
Two ball valves, can dismantle pipeline.
The reference pipeline section is equipped with three pipelines in parallel, and the caliber of three pipelines is different, and every pipeline both ends setting
Two ball valves, can dismantle pipeline.
If dry temperature sensor, pressure sensor are equipped with along the circuit, for acquiring circuit fluid flow parameters.
Compared with prior art, the present invention has the advantages that：
(1) device can carry out the wax deposit pipe flow experiment of waxy crude oil, water-oil emulsion.
(2) differential pressure calculating and two methods of weighing is used to measure wax deposit amount, experimental result is more accurate reliable.
(3) pipeline of three different tube diameters in parallel is set, affecting laws of the caliber to waxy crude oil wax deposit can be studied.
(4) circuit setting more tank pipeline is, it can be achieved that more tank sealing and circulating flowing.
(5) it uses peristaltic pump to drive fluid, can effectively avoid failure by shear of the pump to fluid.
(6) circuit end is equipped with sampling valve, can obtain the sample of fluid in real time.
Description of the drawings
Fig. 1 is the utility model overall structure diagram.
In figure：The first water-baths of 1-；2- oil tanks；3- blowdown valves；4- ball valves one；5- peristaltic pumps；6- mass flowmenters；7- second
Water-bath；8- ball valves two；9- ball valves three；10- ball valves four；11- ball valves five；12- ball valves six；13- ball valves seven；The first differential pressures of 14- pass
Sensor；15- ball valves eight；16- ball valves nine；17- ball valves ten；18- ball valves 11；19- ball valves 12；20- ball valves 13；21-
Two differential pressure pick-ups；22- third water-baths；23- sampling valves；24- ball valves 14；25- ball valves 15.
Specific implementation mode
The utility model is described in detail below in conjunction with the accompanying drawings and by specific embodiment.It is specific the following content is combining
Preferred embodiment further detailed description of the utility model is, and it cannot be said that be the specific implementation of the utility model
It is confined to these explanations.For those of ordinary skill in the art, without departing from the concept of the premise utility, also
Several simple deductions or replacement can be made, the scope of protection of the utility model is all shall be regarded as belonging to.
As shown in Figure 1, the utility model includes two parts of sample system and circuit system.
Wherein the sample system includes the first water-bath 1, oil tank 2, blowdown valve 3 and connection pipeline therein.Described
One water-bath 1 is connected with the outer layer chuck of oil tank 2, controls temperature in tank.Electric mixer is arranged in 2 top of the oil tank, can be to tank
Interior liquid is stirred, and lower part is equipped with blowdown valve 3, can discharge pot liquid.
The circuit system includes ball valve 1, peristaltic pump 5, mass flowmenter 6, the second water-bath 7, ball valve 28, ball valve three
9, ball valve 4 10, ball valve 5 11, ball valve 6 12, ball valve 7 13, the first differential pressure pick-up 14, ball valve 8 15, ball valve 9 16, ball valve
10, ball valve 11, ball valve 12, ball valve 13, the second differential pressure pick-up 21, third water-bath 22, sampling valve 23, ball
Valve 14, ball valve 15.The peristaltic pump 5 is connected by ball valve 1 with the lower part of oil tank 2, for driving fluid to flow.
The mass flowmenter 6 is connected with the outlet of peristaltic pump 5, for measuring fluid flow.The outlet of the mass flowmenter 6 is divided into
The different parallel pipeline of three calibers is connected with ball valve 28, ball valve 39, ball valve 4 10 respectively.The ball valve 5 11, ball valve six
12, one end of ball valve 7 13 is connected with ball valve 28, ball valve 39, ball valve 4 10 respectively by one section of pipeline, and the other end is collected to
One pipeline.The ball valve 28, ball valve 39, ball valve 4 10, ball valve 5 11, ball valve 6 12, ball valve 7 13 and pipe therein
Road together constitutes test section.The both ends of first differential pressure pick-up 14 are respectively connected to the both ends of test section, can measure fluid
In the pressure drop data of test section.It is corresponding with test section caliber that the test section by the circuit of one section of arc is divided into three calibers
Parallel pipeline is connected with ball valve 8 15, ball valve 9 16, ball valve 10 respectively.The ball valve 8 15, ball valve 9 16, ball valve 10
One end be connected respectively with ball valve 11, ball valve 12, ball valve 13 by one section of pipeline, the other end is collected to one
Pipeline.The ball valve 8 15, ball valve 9 16, ball valve 10, ball valve 11, ball valve 12, ball valve 13 and wherein
Pipeline together constitute reference section.The both ends of second differential pressure pick-up 21 are respectively connected to the both ends of reference section, can measure
Pressure drop data of the fluid in reference section.The reference section by being divided into two pipelines in parallel after one section of pipeline, respectively with ball valve
14, ball valve 15 is connected.The ball valve 15 is connected with 2 top of oil tank.The ball valve 14 enters with peristaltic pump 5
It is connected at mouthful.The sampling valve 23 is located at reference section rear portion, and the end of circuit can obtain fluid sample in real time.Cloth along circuit
Pressure sensor and four temperature sensors there are four setting, wherein P1、T1After mass flowmenter 6, P2、T2Positioned at test
Section rear portion, P3、T3Positioned at reference section front, P4、T4Positioned at sampling valve front.
The utility model specific operation process is described as follows：
The preparation of water-oil emulsion：The first water-bath 1 will be opened to oil in a certain amount of crude oil and water injection oil tank 2,2 into
Row heating, the electric mixing device for opening 2 top of oil tank are stirred grease, and stirring after a certain period of time, completes grease emulsus
The preparation of liquid.
Waxy crude oil wax deposit circuit is tested：Close ball valve 14, ball valve 39, ball valve 4 10, ball valve 6 12, ball valve
7 13, ball valve 8 15, ball valve 9 16, ball valve 11, ball valve 12 open ball valve 1, ball valve 28, ball valve 5 11, ball
Valve 10, ball valve 13, ball valve 15 start peristaltic pump 5 and drive crude oil/water-oil emulsion in oil tank 2 to circuit
It is interior, immediate boiling flow.After flowing is stablized, ball valve 14 is opened, closes ball valve 1, ball valve 15, flow, which is converted to, closes
Formula flow.Open the second water-bath 7 and third water-bath 22, set temperature to experimental temperature, sensor acquires fluid stream along circuit
Dynamic data, can get fluid sample by sampling valve 23.After data acquisition, peristaltic pump 5 is closed, by ball valve 28 and ball valve
Pipeline dismounting among 5 11 is weighed, and the quality of wax deposit, while the form of observable wax deposit are obtained.
To sum up, wax deposit experimental apparatus for testing can complete what waxy crude oil or water-oil emulsion were tested in Guan Liuzhong wax deposits
Circuit is tested.Water-oil emulsion can be prepared using self- poking arrangement, peristaltic pump drives fluid.The parallel transistor of three different tube diameters
Road can study affecting laws of the caliber to wax deposit, observe wax deposit form using dismountable pipeline, measure its quality, in conjunction with
Pressure decline method can determine wax deposit amount, as a result more accurate reliable.Circuit is equipped with sampler, can obtain Guan Liuzhong fluids in real time
Sample.Therefore, device, which has, can carry out the experiment of multi-pipe-diameter wax deposit, wax deposit form visualizes, result is accurate reliably, take online
The features such as sample, functional, degree of variation are high, flow is simple, flexible and convenient operation.
Claims (7)
1. a kind of experiment circuit device of waxy crude oil wax deposit test, it is characterised in that the device includes sample system and circuit
Two parts of system；The sample system includes the first water-bath, oil tank and blowdown valve；The outer layer of first water-bath and oil tank presss from both sides
Set is connected, and can control oil tank temperature；The blowdown valve is located at tank bottom, can discharge pot liquid；The circuit system is main
Including peristaltic pump, mass flowmenter, the second water-bath, test pipeline section, the first differential pressure pick-up, third water-bath, reference pipeline section, second
Differential pressure pick-up, sampling valve and connecting line；The peristaltic pump and oil tank can provide power for system；The mass flowmenter
Measurable fluid flow；The both ends of the first differential pressure pick-up connecting test pipeline section, test pipeline section are positioned in the second water-bath,
First differential pressure pick-up can measure the pressure drop of test pipeline section, the temperature of the second water-bath controllable testing pipeline section；Second differential pressure
Sensor connects the both ends of reference pipeline section, and reference pipeline section is positioned in third water-bath, and the second differential pressure pick-up can measure reference tube
The pressure drop of section, third water-bath can control the temperature of reference pipeline section；The sampling valve is placed in circuit end, can obtain fluid-like in real time
This.
2. the experiment circuit device of waxy crude oil wax deposit test according to claim 1, it is characterised in that：The oil tank
Top is equipped with electric mixer, for stirring grease system, accelerates oil mixing with water speed.
3. the experiment circuit device of waxy crude oil wax deposit test according to claim 1, it is characterised in that：The oil tank
Equipped with outer layer chuck, circulator bath is for controlling experimental temperature in tank.
4. the experiment circuit device of waxy crude oil wax deposit test according to claim 1, it is characterised in that：The oil tank
Inlet and exit setting are across pipeline, it can be achieved that the more sealing and circulating flow of tank.
5. the experiment circuit device of waxy crude oil wax deposit test according to claim 1, it is characterised in that：The test
Pipeline section is equipped with three pipelines in parallel, and the caliber of three pipelines is different, and two ball valves are arranged in every pipeline both ends, can be to pipeline
It is dismantled.
6. the experiment circuit device of waxy crude oil wax deposit test according to claim 1, it is characterised in that：The reference
Pipeline section is equipped with three pipelines in parallel, and the caliber of three pipelines is different, and two ball valves are arranged in every pipeline both ends, can be to pipeline
It is dismantled.
7. the experiment circuit device of waxy crude oil wax deposit test according to claim 1, it is characterised in that：The circuit
If dry temperature sensor, pressure sensor are equipped with along the line, for acquiring circuit fluid flow parameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820416138.3U CN208076339U (en) | 2018-03-26 | 2018-03-26 | A kind of experiment circuit device of waxy crude oil wax deposit test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820416138.3U CN208076339U (en) | 2018-03-26 | 2018-03-26 | A kind of experiment circuit device of waxy crude oil wax deposit test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208076339U true CN208076339U (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820416138.3U Expired - Fee Related CN208076339U (en) | 2018-03-26 | 2018-03-26 | A kind of experiment circuit device of waxy crude oil wax deposit test |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458566A (en) * | 2018-12-21 | 2019-03-12 | 西安石油大学 | A kind of device and method measuring solid precipitation characteristic at pipeline difference wall surface |
| CN110108444A (en) * | 2019-04-28 | 2019-08-09 | 辽宁石油化工大学 | A kind of sulfur-containing gas pipeline sulphur sedimentation experiment device |
| CN110608868A (en) * | 2019-10-22 | 2019-12-24 | 中国海洋石油集团有限公司 | Device and method for measuring change of outage state and restarting stress of oil-water mixed transportation sea pipe |
| CN111175167A (en) * | 2020-02-20 | 2020-05-19 | 西南石油大学 | Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil |
| CN111855513A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Experimental device for be used for simulating wax deposit |
| CN112945963A (en) * | 2021-02-01 | 2021-06-11 | 中国石油大学(北京) | Observation sample and observation method |
-
2018
- 2018-03-26 CN CN201820416138.3U patent/CN208076339U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458566A (en) * | 2018-12-21 | 2019-03-12 | 西安石油大学 | A kind of device and method measuring solid precipitation characteristic at pipeline difference wall surface |
| CN110108444A (en) * | 2019-04-28 | 2019-08-09 | 辽宁石油化工大学 | A kind of sulfur-containing gas pipeline sulphur sedimentation experiment device |
| CN110108444B (en) * | 2019-04-28 | 2020-12-01 | 辽宁石油化工大学 | Sulfur deposition experimental device for sulfur-containing natural gas pipeline |
| CN111855513A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Experimental device for be used for simulating wax deposit |
| CN110608868A (en) * | 2019-10-22 | 2019-12-24 | 中国海洋石油集团有限公司 | Device and method for measuring change of outage state and restarting stress of oil-water mixed transportation sea pipe |
| CN111175167A (en) * | 2020-02-20 | 2020-05-19 | 西南石油大学 | Wax deposition characteristic and pipe flow characteristic simulation experiment device for wax-containing crude oil |
| CN112945963A (en) * | 2021-02-01 | 2021-06-11 | 中国石油大学(北京) | Observation sample and observation method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 Termination date: 20190326 |