CN102628853A - Resistance reduction effect tester for viscoplastic material pipeline convey surface film - Google Patents
Resistance reduction effect tester for viscoplastic material pipeline convey surface film Download PDFInfo
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- CN102628853A CN102628853A CN201210076098XA CN201210076098A CN102628853A CN 102628853 A CN102628853 A CN 102628853A CN 201210076098X A CN201210076098X A CN 201210076098XA CN 201210076098 A CN201210076098 A CN 201210076098A CN 102628853 A CN102628853 A CN 102628853A
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Abstract
The invention which relates to a resistance reduction effect tester for a s viscoplastic material pipeline convey surface film belongs to experiment equipment. The tester comprises an experiment table, a mobile plate, a lifting device, a horizontal adjustment system, an air compressor and a vacuum machine. The tester is characterized in that a test plate is fixed on the mobile plate, the surface film to be tested is sprayed, and a test piece is arranged on the surface film; one end of the mobile plate is connected with the lifting device and is provided with a vertical height scale; and a frequency and amplitude adjustable vibrator is arranged on the lower surface of the mobile plate. The tester has the characteristics of simple principle, convenient calculation, real condition approach, and strong comparability. The application of the selected surface film in engineering makes the convey amount be large, the convey distance be long and consumed energy be saved. The tester is suitable for selecting and testing various resistance reduction surface films in the convey of the viscoplastic material pipeline.
Description
Technical field
The surface film that the present invention relates in the conveying of visco-plasticity material pipe is selected testing tool, belongs to experimental facilities.
Background technology
Chinese patent surface film drag reduction method and visco-plasticity material pipe conveying technology (ZL20071026557.X) are the achievements of inventor's early-stage Study.Be the surface film drag reduction method of the epidermal mucus of bionic animal enteron aisle film and alepidote, be employed in material and pipeline enclosure be provided with surface film by film method, a kind of inwall of feeding pipe reduces the surface treatment method of wall friction power.Make the internal friction of material be much higher than tube wall frictional force, highlight the principal contradiction that becomes in the pipe-line transportation system reducing wall friction power problem, other a lot of complicated problems are all reduced to negligible secondary contradiction in pipeline transportation.One very complicated problems oversimplified, just emphatically research reduces wall friction power problem, overcomes the glutinousness of soft sticking material and inner-walls of duct, the difficult problem of the remote pipeline transportation of visco-plasticity material just is able to solution.
Because feeding pipe is high energy surface, the surface energy of tube wall is very big, then tube wall and material between adhesion work also very big, the adhesive attraction of material on tube wall is very strong, causes the feeding pipe resistance very big.When feeding pipe is handled, on tube wall, increase adsorbed layer, and add surfactant.Surfactant gets into and is adsorbed on the inwall of pipeline in course of conveying, thereby forms the firm surface film of one deck.Make to be lined with one deck suspension film between tube wall and the material, avoid the direct friction between material and the pipeline, reach and the tube wall viscosity resistance, make material and pipeline isolated simultaneously, also reduced the wearing and tearing of pipeline to reduce the disturbance of visco-plasticity material.Surfactant that adds during like transporting clay and water; Just can on tube wall, sprawl; Surfactant just is adsorbed on the tube wall with hydrophobic hydrocarbon chain, and the polar group that has the layer of surface film stretches into and is adsorbed in the pipe on the tube wall, and the tube wall of original high energy surface is covered by surface film; This moment, moving on surface film of clay carried out, and its adhesion reduces, makes transporting resistance to reduce.The visco-plasticity material is carried under the prerequisite of low energy consumption, realized the remote pipeline transportation of various visco-plasticity materials.
The selection of surface film is to carry one of gordian technique of visco-plasticity material at a distance, selects the different surface film according to convey materials, makes an experiment most important to the drag-reduction effect of the surface film of different formulations.But the selection testing tool relatively that does not have surface film up to now.
Summary of the invention
In order to address this problem, the natural science fund in Zhejiang Province " the visco-plasticity mud tubes is carried the research of new method and mechanism " (M503164), under " soft clay---visco-plasticity material pipe post stream conveying characteristic research " subsidy (Y505041).Invented the drag reduction surface film selection tester that the visco-plasticity material pipe is carried.
The surface film drag-reduction effect tester that visco-plasticity material pipe of the present invention is carried; Comprise experiment table, moving plate, lifting gear, level adjustment system, air compressor machine and vacuum machine; It is characterized in that: be fixed on test plate (panel) on the moving plate, spray surface film to be tested, and put test specimen; One end of moving plate connects lifting gear, is provided with the scale of vertical height; The Vib. of an adjustable frequency and amplitude is set under moving plate.
Moving plate and level adjustment system, fixedly lifting gear, tensimeter and vacuum meter are set on the described Platform board for experiment.
Described moving plate is used for fixing test plate (panel), and an end connects lifting gear, can regulate the angle of inclination of test plate (panel).
Described test specimen can adopt and conveying pipeline inner wall same material and same surface-treated surface plate, also can adopt the bent plate close with conveyance conduit curvature, or directly adopt conveyance conduit.Make test more near actual feed status.
Advantage of the present invention
1. owing to adopted an end of moving plate to connect lifting gear, be provided with the scale of vertical height, can obtain the various angles of inclination of test specimen.Under the known situation of the contact area of weight, test specimen and the test plate (panel) of test specimen and moving board size; Not only available relative method draws best superficial film; But also can calculate, test specimen is to the parameters such as wall friction power of sliding force, test plate (panel) and horizontal angle, viscous friction coefficient and material and the pipeline of the normal pressure of test plate (panel), test specimen.
2. because the Vib. of an adjustable frequency and amplitude is set, is chosen in different frequency and the various amplitude and tests out different drag-reduction effects.The problem that a lot of complicated mechanics are arranged in pipeline transportation; The present invention catches the principal contradiction that reduces in this pipe-line transportation system of wall friction power; Just emphatically research reduces wall friction power problem, overcomes the glutinousness of soft sticking material and inner-walls of duct, one very complicated problems oversimplified.Not only can draw best superficial film, but also can measure the correlation parameter of frequency and amplitude and pipeline transportation.
Since on moving plate fixing test plate (panel), sprayed surface film on the test plate (panel), and put test specimen.Select the best surface film of specific material thus, the comparison of surface film drag-reduction effect just becomes light, convenient, accurate.
4. because the actual conditions in the model engineering adopt the bent plate identical with conveyance conduit curvature, or directly make test plate (panel) with the conveyance conduit in the actual engineering, and the experimental data of gained more approaches the operating mode in the actual engineering, has directiveness preferably.
So it is simple that the present invention has principle, convenience of calculation, near live, the characteristics that comparability is strong.The surface film of selecting is applied to make in the engineering throughput rate bigger, and defeated apart from farther, energy consumption is more economized.
Description of drawings
Fig. 1 is that embodiment plane test plate (panel) surface film is selected test pattern, and Fig. 2 selects test pattern for the pipe surface film, and Fig. 3 is a curved surface test plate (panel) sectional view.Comprise superficial film (1), test plate (panel) (2), test specimen (3), hinge (4), scale (5), top board (6), hydraulic control lever (7), hydraulic cylinder (8), push rod (9), level meter (10), Vib. (11), moving plate (12), Platform board for experiment (13) among the figure, regulate knob (14), air compressor machine (15), vacuum machine (16), tensimeter (17), vacuum table (18), climbing (19), pipeline (20), curved surface test plate (panel) (21), circular test specimen (22).
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Embodiment is as shown in Figure 1, and surface film selects tester to comprise: the experiment table that level adjustment system is arranged, level meter (10) are embedded on the Platform board for experiment (13), and the experiment table pin is respectively equipped with horizontal adjusting knob (14); Platform board for experiment (13) is gone up the moving plate (12) that is provided with, and a side is provided with the scale (5) of lifting gear and vertical height, and Platform board for experiment (13) is installed air compressor machine (15), vacuum machine (16) down; Moving plate (12) one ends connect lifting gear, and the Vib. (11) of an adjustable frequency and amplitude is set under moving plate (12), go up fixedly test plate (panel) (2) at moving plate (12); Spraying superficial film (1) to be tested on the test plate (panel), and place test specimen (3).
Lifting gear adopts hydraulic mandril (9), and top board (6) is connected by hinge (4) with moving plate (12).
Superficial film (1) selects environmental protection to be prone to degradable material according to the material of carrying, and the drag-reduction effect of different surface rete (1) is different, can adopt the potpourri of water, lubricated activating agent, gas-development agent etc.When carrying soft clay, surface film liquid adopts the WS of one or more mixing in polyacrylamide (PAM), sodium n-alkylbenzenesulfonate (LAS), sodium sulfate of polyethenoxy ether of fatty alcohol (AES), AESA (AESA), sldium lauryl sulfate (K12), dispersing agent NNO, the dispersing agent MF.
In order to make test more near actual feed status, the test plate (panel) of employing (2) is with the conveying pipeline inner wall identical materials and do same surface treatment, also can adopt the curved surface test plate (panel) (21) close with conveyance conduit curvature, or directly adopt conveyance conduit (20).
Select the use of tester to be further described to surface film below.
1. test plate (panel) surface film in plane is selected test:
The 1st step is test plate (panel) (2) fixedly: making test plate (panel) (2) with the conveying pipeline inner wall identical materials, be fixed on the moving plate (12) of tester, rotate and regulate knob (14), see level meter (10), adjust to horizontality to Platform board for experiment (13);
The 2nd step sprayed surface film: be divided into several zones to test plate (panel) (2), and be sprayed at several kinds of surface film liquid on the zone separately of test plate (panel) (2) respectively, form superficial film (1);
The 3rd step was confirmed the weight of test specimen (3) and the contact area of test specimen (3) and test plate (panel) (2) by following formula:
The weight of W-test specimen, unit: g,
The contact area of S-test specimen and test plate (panel), unit: cm
2,
The internal diameter of d-conveyance conduit, unit: cm,
The density of ρ-convey materials, unit: g/cm
3,
The inwall value length of l-conveyance conduit, unit: cm;
The 4th step was put test specimen (2): the material of carrying need is filled in the container of making by following formula as test specimen (2), and is inverted in test specimen (2) in the zone separately of test plate (panel);
The 5th step started tester: an end of stirring the moving plate (12) of push rod (9) promotion top board (6) drive on hydraulic control lever (7) hydraulic cylinder (8) slowly raises; When test specimen (2) stops when beginning to slide rising; Surface film with on the sliding area at first is good; Record scale (5) reading, contingency is got rid of in repeated multiple times checking like this;
The vibration of the 6th step is compared: select Vib. (11) different frequency and amplitude to carry out above-mentioned test, repeat so repeatedly, the record reading is averaged, and relatively draws best surface film and correlation parameter that this material pipe is carried.
2. pipeline is selected test as the surface film of test plate (panel):
As shown in Figure 2, at first go up with the fixing feeding pipe (20) of climbing (19) at moving plate (12), be sprayed at pipeline (20) inwall to surface film liquid, put test specimen (3).An end slowly raises then,, this section material test specimen stops to rise when beginning to slide, and record scale (5) reading, repeated multiple times checking like this, the superficial film (1) minimum with scale (5) reading is good.Open Vib. (11), select different frequency and amplitude to carry out above-mentioned test, draw best surface film and correlation parameter that this material pipe is carried.
3. the surface film in the pipeline (20) and the test of thrust:
One section material is housed in a feeding pipe (20), between material and tube wall, is provided with surface film liquid layer (1), the internal friction that makes material is greater than the wall friction power between material and feeding pipe.End connection air compressor machine (15) at pipeline (20) connects tensimeter (17), applies one by low gradually high pressure.When material is pushed, record in this root feeding pipe, the thrust that the promotion material under the surface film condition is required be:
F-promotes the thrust of material in the pipeline, units,
The internal diameter of d-conveyance conduit, unit: cm,
P-applies port pressure, unit: kg/cm
2,
The length of material in the L-pipeline, unit: cm,
γ-viscosity resistance coefficient, unit: kg/cm
2,
The thrust of gained is exactly the viscosity resistance of feeding pipe inwall and material.The minimum superficial film (1) of thrust is good.Be placed as different angles to pipeline (20), can record the relation of thrust and angle.Open Vib. (11) and can record thrust and superficial film (1) in different frequency and relationship of amplitude.
4. the test of the surface film in the pipeline suction material:
Connect vacuum table (18) at an end of pipeline (20) the vacuum machine (16) that is tightly connected, be provided with surface film liquid layer (1), insert material to pipeline (20) with different angles at tube wall.The relation of superficial film (1) and angle in the time of can recording the suction material.Open Vib. (11) and can record suction material and superficial film (1) in different frequency and relationship of amplitude.
5. curved surface test plate (panel) upper surface film is selected test.
As shown in Figure 3, on moving plate (12), fixing 3 curved surface test plate (panel)s (21), its curvature is identical with conveyance conduit curvature, and with the conveying pipeline inner wall identical materials and do same surface treatment.Go up 3 kinds of different surface film liquid of spraying at each curved surface test plate (panel) (21), form superficial film (1), put 3 identical circular test specimens (22) then gently.Experimental technique selects test identical with plane test plate (panel) surface film.Like this experimental data of gained more near with actual fed in operating mode.
Claims (5)
1. the surface film drag-reduction effect tester carried of visco-plasticity material pipe, it is characterized in that: the experiment table that level adjustment system is arranged, level meter (10) are embedded on the Platform board for experiment (13), and the experiment table pin is respectively equipped with horizontal adjusting knob (14); Platform board for experiment (13) is gone up the moving plate (12) that is provided with, and a side is provided with the scale (5) of lifting gear and vertical height; Platform board for experiment (13) is installed air compressor machine (15), vacuum machine (16) down; Moving plate (12) one ends connect lifting gear, and the Vib. (11) of an adjustable frequency and amplitude is set under moving plate (12); Go up fixedly test plate (panel) (2) at moving plate (12), spraying superficial film (1) to be tested on the test plate (panel), and place test specimen (3).
2. the surface film drag-reduction effect tester that visco-plasticity material pipe as claimed in claim 1 is carried; It is characterized in that: the test plate (panel) of employing (2) is with the conveying pipeline inner wall identical materials and do same surface treatment; Also can adopt the curved surface test plate (panel) (21) close, or directly adopt conveyance conduit (20) with conveyance conduit curvature.
3. the surface film drag-reduction effect tester that visco-plasticity material pipe as claimed in claim 1 is carried is characterized in that: surface film liquid adopts the WS of one or more mixing in polyacrylamide (PAM), sodium n-alkylbenzenesulfonate (LAS), sodium sulfate of polyethenoxy ether of fatty alcohol (AES), AESA (AESA), sldium lauryl sulfate (K12), dispersing agent NNO, the dispersing agent MF.
4. the surface film drag-reduction effect tester that visco-plasticity material pipe as claimed in claim 1 is carried is characterized in that: the weight of test specimen (3) and test specimen (3) are calculated as follows with the contact area of test plate (panel) (2):
The weight of W-test specimen, unit: g,
The contact area of S-test specimen and test plate (panel), unit: cm
2,
The internal diameter of d-conveyance conduit, unit: cm,
The density of ρ-convey materials, unit: g/cm
3,
The inwall value length of l-conveyance conduit, unit: cm.
5. the surface film drag-reduction effect tester that visco-plasticity material pipe as claimed in claim 1 is carried is characterized in that: the thrust that the promotion material under the surface film condition is required be:
F-promotes the thrust of material in the pipeline, units,
The internal diameter of d-conveyance conduit, unit: cm,
P-applies port pressure, unit: kg/cm
2,
The length of material in the L-pipeline, unit: cm,
γ-viscosity resistance coefficient, unit: kg/cm
2,
The thrust of gained is exactly the viscosity resistance of feeding pipe inwall and material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210076098.XA CN102628853B (en) | 2012-03-12 | 2012-03-12 | The surface film drag-reduction effect tester of visco-plasticity material pipe conveying |
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| CN201210076098.XA CN102628853B (en) | 2012-03-12 | 2012-03-12 | The surface film drag-reduction effect tester of visco-plasticity material pipe conveying |
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| CN102628853B CN102628853B (en) | 2015-09-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975180A (en) * | 2019-04-18 | 2019-07-05 | 龙岩学院 | Goaf resistance coefficient test device and method under impact load |
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| CN201091276Y (en) * | 2007-10-15 | 2008-07-30 | 陈元水 | Shoes lining and inner-pad surface friction resistance dynamic angle experimental apparatus |
| CN202057575U (en) * | 2011-03-08 | 2011-11-30 | 宁波大学 | Measuring device for friction factor of materials |
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| CN102302249A (en) * | 2011-07-26 | 2012-01-04 | 广州市质量监督检测研究院 | Tester for testing surface frictional property of shoe lining and insole |
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2012
- 2012-03-12 CN CN201210076098.XA patent/CN102628853B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201091276Y (en) * | 2007-10-15 | 2008-07-30 | 陈元水 | Shoes lining and inner-pad surface friction resistance dynamic angle experimental apparatus |
| CN202057575U (en) * | 2011-03-08 | 2011-11-30 | 宁波大学 | Measuring device for friction factor of materials |
| CN102279145A (en) * | 2011-06-30 | 2011-12-14 | 云南三环中化化肥有限公司 | Device for determining relative roundness of granular material and determination method thereof |
| CN102302249A (en) * | 2011-07-26 | 2012-01-04 | 广州市质量监督检测研究院 | Tester for testing surface frictional property of shoe lining and insole |
Non-Patent Citations (3)
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| 姚同玉等: "用原子力显微镜研究聚丙烯酰胺膜的结构形貌", 《2003年纳米和表面科学与技术全国会议（北京）论文摘要集》, 31 December 2003 (2003-12-31), pages 106 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975180A (en) * | 2019-04-18 | 2019-07-05 | 龙岩学院 | Goaf resistance coefficient test device and method under impact load |
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