CN103674782A - Circulating fluid collimation distributor for drum rheometer - Google Patents
Circulating fluid collimation distributor for drum rheometer Download PDFInfo
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- CN103674782A CN103674782A CN201310545975.8A CN201310545975A CN103674782A CN 103674782 A CN103674782 A CN 103674782A CN 201310545975 A CN201310545975 A CN 201310545975A CN 103674782 A CN103674782 A CN 103674782A
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Abstract
The invention discloses a circulating fluid collimation distributor which comprises a spiral inflow passage with distribution holes, wherein the distribution holes are distributed to form a circle along the lower part of the spiral inflow passage; perpendicular and downward vertical passages are communicated with the lower parts of the distribution holes respectively; a ring cylinder is formed between the vertical passages arranged continuously; the lower parts of the vertical passages are communicated with a space between a rotor and an outer barrel of a rheometer; the width of each vertical passage is preferably equal to that of a measurement space, namely the internal and external diameters of the cylinder are equal to those of the rotor and the outer barrel of the rheometer respectively to enable the width of each vertical passage equal to that of the measurement space. According to the circulating fluid collimation distributor, circulating fluid can perpendicularly enter the measurement space, and is equally distributed on an annular section when a drum rheometer is used for measuring rheological parameters of easy-to-settle suspension liquid, so that the rheometer runs according to an original working principle and an original computational model without correction.
Description
Technical field
The invention belongs to field of chemical engineering, be specifically related to a kind of measuring appliance to the collimation of circulating fluid and distribution while measuring free settling suspension flow variable element with drum-type rheometer.
Background technology
When measuring the sex change of free settling suspension flow with drum-type rheometer, the measurement space inner fluid heterogeneous body problem causing for overcoming the sedimentation of suspended particle, allowing measured suspending liquid cross measurement space through exterior line circular flow is a kind of effective solution (see the people's such as Xu Ji profit patent of invention: drum-type rheometer circulating system, the patent No. 201010107268.7).Drum-type rheometer circulating system, comprises rotor, urceolus, peristaltic pump and circulation pipe, and rotor is placed in urceolus, and urceolus bottom connects circulation pipe, and circulation pipe is connected with peristaltic pump, and the other end of circulation pipe is placed between rotor and urceolus.Use this invention and set and operate according to desired technology, can effectively measure the rheological parameter of free settling solid-liquid suspension system.But this drum-type rheometer circulating system, circulating fluid enters measurement space local location with vertical direction, at whole measurement space, have the speed component of radial direction and sense of rotation, the fluid that enters measurement space is difficult to realize equiblibrium mass distribution on the whole ring section between inside and outside cylinder.It can not guarantee that flow graph can be according to original principle work under the condition of Fluid Circulation, and will change computation model.
Summary of the invention
The present invention is just to provide the drum-type rheometer circulating system that a kind of like this rotating cylinder flow graph circulating fluid collimation divider forms, and realize equiblibrium mass distribution and elimination radially and the fluid velocity of sense of rotation, thereby assurance flow graph is normally worked while making Fluid Circulation.Guarantee that flow graph can be according to original principle work under the condition of Fluid Circulation, and do not change computation model.
Rotating cylinder flow graph circulating fluid collimation divider of the present invention, spirality influent stream passage with dispensing orifice, dispensing orifice distributes one week below spirality influent stream passage, below dispensing orifice, UNICOM perpendicular passage vertically downward respectively, between continuously arranged perpendicular passage and perpendicular passage, part forms annulated column shape, the space UNICOM below and between flow graph rotor and urceolus of perpendicular passage.Perpendicular channel width is preferably equal to measurement space width, and the inner and outer diameter of annulated column shape equates with flow graph rotor, urceolus interior diameter respectively, makes perpendicular channel width be equal to measurement space width.Rotating cylinder flow graph circulating fluid collimation divider of the present invention like this, by the fluid of circulation before entering measurement space, first form helical flow, be evenly distributed to again the dispensing orifice of a week, each perpendicular passage vertical below dispensing orifice becomes fluid vertically downward by direct fluid, the fluid that assurance enters measurement space only flows downward, and there is no the shunting of other directions.Different helix angles (tangential direction of spiral and horizontal angle) and equally distributed dispensing orifice can guarantee the equiblibrium mass distribution of circulating fluid on whole measurement space ring section.With the spirality influent stream passage of dispensing orifice, at streamwise, at the equal rectangle dispensing orifice of influent stream channel bottom setting space.
Different helix angles (tangential direction of spiral and horizontal angle) and different passage lengths vertically downward, adapt to different hydrometries, for same fluid, adopt the perpendicular passage vertically downward of different helix angles or different length simultaneously, realize different mensuration.Having designed the series helix shape passage with different helix angles selects during for different fluid internal circulating load.In order to prevent the sedimentation of suspended particle, suitable different pressures and adapt to the mensuration of the suspension of different spiral angles, the hypomere of annulated column shape is preferably separable connection.The remaining spirality influent stream passage with dispensing orifice, UNICOM the perpendicular passage of epimere vertically downward below dispensing orifice, can be called separately spirality influent stream passage.The annulated column shape hypomere of separable connection can be that flange connects or bonding or screw thread socket or transition socket with being connected of epimere.Annulated column shape hypomere and perpendicular passage can be called separately annulated column shape collimating apparatus.The annulated column shape collimating apparatus forming like this, below spirality influent stream passage, is a circular cylindrical fluid collimating apparatus, and its effect is the tangential and Radial Flow of further eliminating circulating fluid.The annular space width of annulated column shape collimating apparatus equates along endless belt, there is the perpendicular passage of arranged distribution with measurement space width, each passage below the dispensing orifice of each passage and spirality influent stream passage docks completely.The speed only from the fluid flowing out in collimating apparatus duct with vertical direction.Spirality influent stream passage and perpendicular passage with dispensing orifice consist of transparent material, and whether the balanced distributional effects that can observe spirality channel from outside completes.
Spirality influent stream passage, annulated column shape collimating apparatus, flow graph urceolus are arranged from top to bottom, preferably by ring flange, are connected between any two.Between annulated column shape collimating apparatus inwall lower edge and flow graph rotor, leave 1mm gap, both guaranteed that the rotation of rotor is interference-free, make again the circulating fluid overwhelming majority enter measurement space, from gap, flow on a small quantity unlikely the impacting of fluid of rotor upper end.Theoretical research proves, when fluid circulates in drum-type rheometer interval of internal and external tube, if meet following condition:
(1) circulating fluid enters measurement space with vertical direction,, except axial velocity, does not have the speed component of radial direction and sense of rotation;
(2) circulation enters fluid equiblibrium mass distribution on the whole ring section between inside and outside cylinder of measurement space;
Can guarantee that flow graph can be according to original principle work under the condition of Fluid Circulation, and not change computation model.
Beneficial effect of the present invention: use " circulating fluid collimation divider " of the present invention, when using drum-type rheometer to measure free settling suspension flow variable element, can make circulating fluid enter measurement space with vertical direction and when entering equiblibrium mass distribution in ring section, thereby make flow graph by original principle of work and computation model running, do not need any correction.
Accompanying drawing explanation
Fig. 1 is the integral body assembling schematic diagram of a kind of drum-type rheometer circulating fluid collimation divider of the present invention; Fig. 2 is the schematic diagram of the whole clearing of this drum-type rheometer circulating fluid collimation divider; Fig. 3 is the schematic diagram of transparent spiral shape influent stream passage the first half of this drum-type rheometer circulating fluid collimation divider; Fig. 4 is transparent spiral shape influent stream passage the latter half of this drum-type rheometer circulating fluid collimation divider and the schematic diagram of perpendicular channel part; Fig. 5 is the schematic diagram of the flow graph rotor urceolus of this drum-type rheometer circulating fluid collimation divider.Fig. 6 is the integral body assembling schematic diagram of another kind of drum-type rheometer circulating fluid collimation divider of the present invention; Fig. 7 is the schematic diagram of spirality influent stream passage the first half end cap of this drum-type rheometer circulating fluid collimation divider; Fig. 8 is spirality influent stream passage the latter half of this drum-type rheometer circulating fluid collimation divider and the schematic diagram of perpendicular channel part; Fig. 9 is the schematic diagram of the flow graph rotor urceolus of this drum-type rheometer circulating fluid collimation divider; Figure 10 is the schematic diagram of the annulated column shape collimating apparatus part of this drum-type rheometer circulating fluid collimation divider.
Embodiment
As shown in Figure 1, a kind of rotating cylinder flow graph circulating fluid collimation divider of the present invention, it is characterized in that: with the spirality influent stream passage of dispensing orifice, dispensing orifice distributes one week below spirality influent stream passage, below dispensing orifice, UNICOM perpendicular passage vertically downward respectively, between continuously arranged perpendicular passage and perpendicular passage, part forms annulated column shape, the space UNICOM below and between flow graph rotor and urceolus of annulated column shape.The hypomere of annulated column shape is annulated column shape and the perpendicular passage of separable connection, and annulated column shape hypomere and perpendicular passage form separately annulated column shape collimating apparatus.Epimere annulated column shape and perpendicular passage and spirality influent stream passage also can be called spirality influent stream passage jointly.For the ease of forming the passage of spirality type, spirality influent stream passage can divide spirality influent stream passage the first half (Fig. 3) and spirality influent stream passage the first half (Fig. 4), after two parts combinations, form spirality influent stream passage, below the spirality influent stream passage of spirality influent stream passage the latter half with dispensing orifice and perpendicular passage.Below spirality influent stream passage, through flange, be connected with annulated column shape collimating apparatus, annulated column shape collimating apparatus is connected with flow graph urceolus (Fig. 5) through flange again.Flow graph rotor is placed in urceolus, and urceolus bottom joins through peristaltic pump, circulation pipe and spirality influent stream channel entrance, realizes Fluid Circulation.This specially designed circulating fluid collimation divider while measuring free settling suspension flow variable element for drum-type rheometer, the utilization of this collimation divider, can make flow graph according to its original principle and computation model work, and not be subject to the impact of Fluid Circulation.Circulating fluid collimation divider of the present invention consists of two parts.First spirality circulating fluid influent stream passage, the rectangle dispensing orifice evenly arranging in channel bottom and the spiral current flowing mode of circulating fluid, can make fluid through dispensing orifice equiblibrium mass distribution on the annular measurement space cross section at flow graph; It two is annulated column shape fluid collimating apparatuss, has the vertical channel of certain distance in this collimating apparatus, can make circulating fluid radially and tangential flow velocity eliminated, and only retain the work to flow graph, do not have influential axia flow.For guaranteeing that circulating fluid flows with vertical speed and balanced being allocated on the ring section of flow graph measurement space in collimation divider, designed the series helix shape feeding-passage of interchangeable different helix angles, and the design of annulated column shape fluid collimating apparatus is made by transparent material, to directly observe the flow condition of fluid.See Fig. 2.
As shown in Figure 6, another kind of rotating cylinder flow graph circulating fluid collimation divider of the present invention, it is characterized in that: with the spirality influent stream passage of dispensing orifice, dispensing orifice distributes one week below spirality influent stream passage, below dispensing orifice, UNICOM perpendicular passage vertically downward respectively, between continuously arranged perpendicular passage and perpendicular passage, part forms annulated column shape, the space UNICOM below and between flow graph rotor and urceolus of annulated column shape.The hypomere of annulated column shape is annulated column shape and the perpendicular passage of separable connection, and annulated column shape hypomere and perpendicular passage form separately annulated column shape collimating apparatus.Epimere annulated column shape and perpendicular passage and spirality influent stream passage also can be called spirality influent stream passage jointly.For the ease of the passage of processing spirality type, with the spirality influent stream passage of dispensing orifice, divide spirality influent stream passage the first half end cap (Fig. 7) and spirality influent stream passage the latter half (Fig. 8), formation spirality influent stream passage after two parts combination.Below the spirality influent stream passage of spirality influent stream passage the latter half with dispensing orifice and perpendicular passage.Being connected with annulated column shape collimating apparatus (Figure 10) through flange below of spirality influent stream passage the latter half, annulated column shape collimating apparatus is connected with flow graph urceolus (Fig. 9) through flange again.Flow graph rotor is placed in urceolus, and urceolus bottom joins through peristaltic pump, circulation pipe and spirality influent stream channel entrance, realizes Fluid Circulation.The hypomere of annulated column shape is separated annulated column shape and the perpendicular passage connecting, and annulated column shape hypomere and perpendicular passage form separately annulated column shape collimating apparatus; Below part annulated column shape above it and perpendicular passage and spirality influent stream passage and dispensing orifice be jointly called spirality influent stream passage the latter half.
Circulating fluid, after spirality influent stream passage 5 and annulated column shape collimating apparatus 8, has been eliminated tangential and radial velocity, and on the xsect of annular measurement space equiblibrium mass distribution.With the spirality influent stream passage of dispensing orifice, at streamwise, at the equal rectangle dispensing orifice of channel bottom setting space, the long limit of dispensing orifice and measurement space are wide, half that minor face is long limit.Annulated column shape collimating apparatus when measurement space is connected above flow graph, leaves 1mm gap between annulated column shape collimating apparatus inwall lower edge and flow graph rotor.Spirality influent stream passage integral passage whole and annulated column shape collimating apparatus with dispensing orifice consists of transparent material.
For investigating the impact on measurement result after Fluid Circulation, respectively with traditional drum-type rheometer and collimate with above-mentioned circulating fluid the apparent viscosity that the same flow graph of divider is the PAM Polymer Solution of 20 ℃ to temperature and measure, result is as table 1.Table 1 shows, both measurement results are basically identical, thereby realized basic object of the present invention.This uses after " circulating fluid collimation divider " of the present invention with regard to indirect proof, and drum-type rheometer can directly be measured free settling suspension system, and does not need instrument itself and measurement result to revise.
Table 1: the measurement result contrast that solution concentration is 60ppm
Claims (8)
1. a circulating fluid collimates divider, it is characterized in that: with the spirality influent stream passage of dispensing orifice, dispensing orifice distributes one week below spirality influent stream passage, below dispensing orifice, UNICOM perpendicular passage vertically downward respectively, erects below passage and the space UNICOM between flow graph rotor and urceolus.
2. circulating fluid collimates divider as claimed in claim 1, it is characterized in that: the part between continuously arranged perpendicular passage and adjacent perpendicular passage forms annulated column shape, and the inner and outer diameter of annulated column shape equates with flow graph rotor, urceolus interior diameter respectively.
3. circulating fluid collimates divider as claimed in claim 1, it is characterized in that: spirality influent stream passage and perpendicular passage with dispensing orifice consist of transparent material.
4. circulating fluid collimates divider as claimed in claim 1, it is characterized in that: with the spirality influent stream passage of dispensing orifice, at streamwise, at the equal rectangle dispensing orifice of channel bottom setting space.
5. circulating fluid collimates divider as claimed in claim 1, it is characterized in that: the hypomere of annulated column shape is separable connection, and the perpendicular passage of annulated column shape hypomere forms annulated column shape collimating apparatus.
6. circulating fluid collimation divider as claimed in claim 5, is characterized in that: annulated column shape collimating apparatus when measurement space is connected above flow graph, leaves 1mm gap between annulated column shape collimating apparatus inwall lower edge and flow graph rotor.
7. as claim 1,2,3,4 or 5 said circulating fluid collimation dividers, it is characterized in that: with spirality influent stream passage minute spirality influent stream passage the first half and spirality influent stream passage the latter half of dispensing orifice, after two parts combinations, form spirality influent stream passage, below the spirality influent stream passage of spirality influent stream passage the latter half with dispensing orifice and perpendicular passage.
8. circulating fluid collimates divider as claimed in claim 2, it is characterized in that: with spirality influent stream passage minute spirality influent stream passage the first half and spirality influent stream passage the latter half of dispensing orifice, after two parts combinations, form spirality influent stream passage, below the spirality influent stream passage of spirality influent stream passage the latter half with dispensing orifice and perpendicular passage; The hypomere of annulated column shape is separated annulated column shape and the perpendicular passage connecting, and annulated column shape hypomere and perpendicular passage form separately annulated column shape collimating apparatus; Below part annulated column shape above it and perpendicular passage and spirality influent stream passage and dispensing orifice be jointly called spirality influent stream passage the latter half.
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| CN201310545975.8A CN103674782B (en) | 2013-11-07 | 2013-11-07 | Rotating cylinder flow graph circulation of fluid collimation distributor |
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| CN201310545975.8A CN103674782B (en) | 2013-11-07 | 2013-11-07 | Rotating cylinder flow graph circulation of fluid collimation distributor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788445A (en) * | 2010-02-06 | 2010-07-28 | 大连大学 | Drum-type rheometer circulating system |
| CN102095670A (en) * | 2010-12-20 | 2011-06-15 | 聚合物加工研究所 | Improved spiral cylinder rheometer and test method |
| CN102323184A (en) * | 2011-08-12 | 2012-01-18 | 哈尔滨理工大学 | Visual testing device for liquid metal fluidity and testing method based on it |
| US8424368B2 (en) * | 2010-03-11 | 2013-04-23 | Halliburton Energy Services, Inc. | Method for estimating proppant transport and suspendability of viscoelastic liquids |
-
2013
- 2013-11-07 CN CN201310545975.8A patent/CN103674782B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788445A (en) * | 2010-02-06 | 2010-07-28 | 大连大学 | Drum-type rheometer circulating system |
| US8424368B2 (en) * | 2010-03-11 | 2013-04-23 | Halliburton Energy Services, Inc. | Method for estimating proppant transport and suspendability of viscoelastic liquids |
| CN102095670A (en) * | 2010-12-20 | 2011-06-15 | 聚合物加工研究所 | Improved spiral cylinder rheometer and test method |
| CN102323184A (en) * | 2011-08-12 | 2012-01-18 | 哈尔滨理工大学 | Visual testing device for liquid metal fluidity and testing method based on it |
Non-Patent Citations (4)
| Title |
|---|
| J. MEISSNER ET AL.: "A new elongational rheometer for polymer melts and other highly viscoelastic liquids", 《RHEOLOGICA ACTA》 * |
| 徐继润等: "旋转流变仪测定易沉降悬浮液流变性的初步探讨", 《过滤与分离》 * |
| 徐继润等: "旋转流变仪测量空间的探讨", 《过滤与分离》 * |
| 徐继润等: "易沉降悬浮液流变性测定时循环速度的理论分析", 《过滤与分离》 * |
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