CN104624403A - Hydrocyclone - Google Patents
Hydrocyclone Download PDFInfo
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- CN104624403A CN104624403A CN201510001766.6A CN201510001766A CN104624403A CN 104624403 A CN104624403 A CN 104624403A CN 201510001766 A CN201510001766 A CN 201510001766A CN 104624403 A CN104624403 A CN 104624403A
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- hydrocyclone
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Abstract
The invention discloses a hydrocyclone. The hydrocyclone is provided with a separating cavity with openings in two ends, wherein the separating cavity is provided with a central axis; a cylindrical section, a large tapered section and a small tapered section which are communicated with each other and gradually reduced in inner diameter are arranged in the separating cavity from top to bottom along a central axis direction in sequence; a tangential hydrocyclone inlet is formed in the cylindrical section; along the central axis, an overflow tube is arranged on the upper part of the cylindrical section; a position connecting the large tapered section and the small tapered section adopts circular-arc transition; the inner radius of the cylindrical section is 0.3-1 time the curvature radius of the circular arc. The technology disclosed by the invention can be used for improving the separating effects of the hydrocyclone.
Description
Technical field
The present invention relates to the separator in the fields such as a kind of oil, chemical industry, particularly a kind of hydrocyclone.
Background technology
Hydrocyclone is as a kind of separator of field of petrochemical industry, and its cardinal principle is under the influence of centrifugal force, utilizes the density contrast between material or particle diameter difference to realize two-phase or multiphase and is separated.Hydrocyclone, because having easy to operate, advantages of simple structure and simple, is now widely used in the operating modes such as water-oil separating.
At present, the hydrocyclone majority of existing water-oil separating adopts Thew formula structure, i.e. bicone structure.As shown in Figure 1, the hydrocyclone of described bicone structure comprises the cylindrical section 11, large cone section 12, the small cone section 13 that are communicated with successively from top to bottom.Described cylindrical section 11 is provided with tangential cyclone inlet 14.Along the central axis O1 of described hydrocyclone, the top of described cylindrical section 11 is provided with overflow pipe 15.During use, after oil-water mixture tangentially enters cyclone by entrance 14, at cylindrical section 11 High Rotation Speed, produce strong eddy current, under continuous later and oil-water mixture that is that come promotes, the helically type rotary motion of oil-water mixture in cyclone, the oil-water mixture of rotation enters large cone section 12, small cone section 13 downwards.Because the internal diameter of cyclone reduces gradually, oil-water mixture swirl velocity is accelerated relatively, and there is density contrast due to water-oil phase medium, make the centrifugal force suffered by water-oil phase medium different, the less fluid of density moves to the low-pressure area of near axis, be gathered near axis, rotation limit, limit moves up, and finally discharges from the overflow pipe 15 at top; The water that density is larger is discharged downwards along the inwall of cyclone, thus reaches the object of water-oil separating.
But in the hydrocyclone of existing bicone structure, its large cone section 12 is directly crossing with form of straight lines with small cone section 13 junction, forms a spike A.The flow field of hydrocyclone inside under the impact of described spike A, can be formed turbulent flow, thus affects the separating effect of hydrocyclone.
Summary of the invention
The object of this invention is to provide a kind of hydrocyclone, for improving the separating effect of hydrocyclone.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
A kind of hydrocyclone, it has the separation cavity of a both ends open, described separation cavity has a central axis, described separation cavity is disposed with along described central axial direction from top to bottom and is interconnected and the internal diameter cylindrical section, large cone section, the small cone section that reduce gradually, and described cylindrical section is provided with tangential cyclone inlet; Along described central axis, the top of described cylindrical section is provided with overflow pipe, arc transition is passed through in the position that described large cone section, small cone section connect; Described cylindrical section internal diameter is 0.3 times of the radius of curvature of described circular arc to 1 times.
In a preferred embodiment, described cylindrical section internal diameter is 0.6 times of the radius of curvature of described circular arc to 0.7 times.
In a preferred embodiment, the radius of curvature of described circular arc and the ratio of described cylindrical section internal diameter are 1:0.625.
In a preferred embodiment, the internal diameter of described cylindrical section is 45 millimeters, and the length of described cylindrical section is 48 millimeters, and the length of described large cone section is 64 millimeters, and the length of described small cone section is 428 millimeters.
In a preferred embodiment, the treating capacity of described hydrocyclone be 2.5 cubes per hour.
The features and advantages of the invention are: hydrocyclone of the present invention, in the position that described large cone section, small cone section connect by arc transition, reasonable in design, greatly reduce the turbulent flow at large cone section, small cone section place, have higher separative efficiency; And there is longer service life, solving conventional hydrocyclone, making the long-time impacting with high pressure wall of liquid because there is a large amount of bubble, the problem that the enhance faster wear life-span is short.Further the present invention also specify that described transition arc with the concrete size relationship of cylindrical section: described cylindrical section 21 internal diameter D is 0.3 times of the radius of curvature R of described circular arc B to 1 times.Hydrocyclone processing of the present invention is simple, with low cost, practical in addition, and can be applicable to the separation of other kinds incompatible medium, has considerable popularizing application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of hydrocyclone in prior art;
Fig. 2 is the schematic diagram that the flow field of hydrocyclone inside forms turbulent flow under the impact of spike A;
Fig. 3 is the structural representation of a kind of hydrocyclone in the embodiment of the present invention;
Fig. 4 is the inner laminar motion schematic diagram of a kind of hydrocyclone in the embodiment of the present invention;
Fig. 5 is a kind of hydrocyclone of the present invention and existing hydrocyclone separating effect comparison diagram;
Fig. 6 is the separating effect figure of a kind of hydrocyclone of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is elaborated, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen in the application's claims limited range.
The invention provides a kind of hydrocyclone, for improving the separating effect of hydrocyclone.
In the hydrocyclone of existing bicone structure, its large cone section 12 is directly crossing with form of straight lines with small cone section 13 junction, forms a spike A.From boundary-layer flowing and boundary-layer analysis theories known: at this spike A, can there is non-fit motion due to the existence of spike A in fluid flow fields, thus generation boundary-layer separation, form turbulent phenomenon, have impact on the separating effect of hydrocyclone to a great extent.As shown in Figure 2, when being formed with spike on the inwall of described hydrocyclone, originally the water flowed downward along inwall is fit moving, and be in laminar motion state, when running into spike A, can form whirlpool at spike A place, water changes turbulent motion into by laminar motion, thus the axial velocity profile upset in hydrocyclone flow field, its separating effect is deteriorated.
In addition when forming whirlpool at spike A place, when the appearance in hydrocyclone is turbulent, bubble can be produced under the stirring collision of liquid.Hydrocyclone wall can be impacted when the bubbles burst that turbulent flow produces to the crunch that liquid produces, by action of turbulent flow if long-term in hydrocyclone will cause the destruction of wall material and degrade.
Referring to Fig. 3, is a kind of in embodiment of the present invention structural representation of hydrocyclone.
Hydrocyclone of the present invention has the separation cavity of a both ends open, described separation cavity has a central axis O2, described separation cavity is disposed with along described central axis O2 direction from top to bottom and is interconnected and the internal diameter cylindrical section 21, large cone section 22, the small cone section 23 that reduce gradually, and described cylindrical section 21 is provided with tangential cyclone inlet 24; Along described central axis O2, the top of described cylindrical section 21 is provided with overflow pipe 25, the position that described large cone section 22, small cone section 23 connect is by circular arc B transition; Described cylindrical section 21 internal diameter D is 0.3 times of the radius of curvature R of described circular arc B to 1 times.
Further, by separating property test and structure optimization test, the preferred structure of hydrocyclone of the present invention is of a size of the radius of curvature R of described circular arc B and the ratio of described cylindrical section 21 internal diameter D is 1:0.625.The internal diameter D of described cylindrical section 21 specifically can be 45 millimeters, the treating capacity of described hydrocyclone be 2.5 cubes per hour.The length L1 of described cylindrical section 21 can be 48 millimeters, and the length L2 of described large cone section 22 can be 64 millimeters, and the length L3 of described small cone section 23 can be 428 millimeters.
Tested known by separating property, when the parameters of cyclone of the present invention is above-mentioned numerical value, the performance of cyclone reaches best.
During use, after oil-water mixture tangentially enters cyclone by cyclone inlet 24, at cylindrical section 21 High Rotation Speed, produce strong eddy current, under continuous later and oil-water mixture that is that come promotes, the helically type rotary motion of oil-water mixture in cyclone, the oil-water mixture of rotation enters large cone section 22, small cone section 23 downwards.Refer to Fig. 4, hydrocyclone of the present invention, in the position that described large cone section 22, small cone section 23 connect by circular arc B transition, when being formed with spike on the inwall of described hydrocyclone, the water flowed downward along inwall is fit moving, and is in laminar motion state all the time, avoids existing hydrocyclone and forms whirlpool at spike A place, water changes turbulent motion into by laminar motion, the situation that separating effect is deteriorated.Because the internal diameter of cyclone reduces gradually, oil-water mixture swirl velocity is accelerated relatively, and there is density contrast due to water-oil phase medium, make the centrifugal force suffered by water-oil phase medium different, the less fluid of density moves to the low-pressure area of near axis, be gathered near axis, rotation limit, limit moves up, and finally discharges from the overflow pipe 25 at top; The water that density is larger is discharged downwards along the inwall of cyclone, thus reaches the object of water-oil separating.
Hydrocyclone of the present invention, in the position that described large cone section 22, small cone section 23 connect by circular arc B transition, reasonable in design, greatly reduce the turbulent flow at large cone section 22, small cone section 23 place, there is higher separative efficiency.As shown in Figure 5, be a kind of hydrocyclone of the present invention and existing hydrocyclone separating effect comparison diagram.Wherein abscissa split ratio represents: overflow pipe 25 exit rich oil flow account for total treating capacity number, described split ratio is the procedure parameter of optimum results, is generally used for and controls optimal processing amount.Ordinate represents separative efficiency.Can obviously find out from Fig. 5 under the prerequisite that split ratio is identical, the hydrocyclone of the direct form of straight transitions of large cone section 12 conventional in prior art and small cone section 13, its separative efficiency is less than large cone section 22 of the present invention and small cone section 23 on the whole with the form of circular arc B transition.And the form due to described arc transition B substantially reduces the generation of turbulent flow, hydrocyclone of the present invention is made to have longer service life, solving conventional hydrocyclone, making the long-time impacting with high pressure wall of liquid because there is a large amount of bubble, the problem that the enhance faster wear life-span is short.
Further, the present invention also specify that described transition arc B with the concrete size relationship of cylindrical section 21: described cylindrical section 21 internal diameter D is 0.3 times of the radius of curvature R of described circular arc B to 1 times.As shown in Figure 6, for the separating effect figure of a kind of hydrocyclone of the present invention, wherein abscissa is the ratio of described cylindrical section 21 internal diameter and described circular arc B radius of curvature R, ordinate represents separative efficiency, can obviously find out in curve map from figure, when described cylindrical section 21 internal diameter D is 0.3 times to 1 times of the radius of curvature R of described circular arc B, the separative efficiency of hydrocyclone is in the efficient released state of more than 95% all the time.Time particularly between 0.6 times to 0.7 times that described cylindrical section 21 internal diameter D is the radius of curvature R of described circular arc B, the separative efficiency of described hydrocyclone is between best result abscission zone, usually all up to more than 99%.Particularly preferred, when described cylindrical section 21 internal diameter D is 0.625 times of the radius of curvature R of described circular arc B, the separative efficiency of hydrocyclone is the highest.
Hydrocyclone processing of the present invention is simple, with low cost, practical in addition, and can be applicable to the separation of other kinds incompatible medium, has considerable popularizing application prospect.
The foregoing is only several embodiments of the present invention, although the embodiment disclosed by the present invention as above, the embodiment that described content just adopts for the ease of understanding the present invention, is not intended to limit the present invention.Any those skilled in the art; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done on the formal of embodiment and details; but scope of patent protection of the present invention, the scope that still must define with appended claims is as the criterion.
Claims (5)
1. a hydrocyclone, it is characterized in that: it has the separation cavity of a both ends open, described separation cavity has a central axis, described separation cavity is disposed with along described central axial direction from top to bottom and is interconnected and the internal diameter cylindrical section, large cone section, the small cone section that reduce gradually
Described cylindrical section is provided with tangential cyclone inlet; Along described central axis, the top of described cylindrical section is provided with overflow pipe,
Arc transition is passed through in the position that described large cone section, small cone section connect; Described cylindrical section internal diameter is 0.3 times of the radius of curvature of described circular arc to 1 times.
2. hydrocyclone as claimed in claim 1, is characterized in that: described cylindrical section internal diameter is 0.6 times of the radius of curvature of described circular arc to 0.7 times.
3. hydrocyclone as claimed in claim 2, is characterized in that: the radius of curvature of described circular arc and the ratio of described cylindrical section internal diameter are 1:0.625.
4. hydrocyclone as claimed in claim 2, it is characterized in that: the internal diameter of described cylindrical section is 45 millimeters, the length of described cylindrical section is 48 millimeters, and the length of described large cone section is 64 millimeters, and the length of described small cone section is 428 millimeters.
5. hydrocyclone as claimed in claim 4, is characterized in that: the treating capacity of described hydrocyclone be 2.5 cubes per hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001766.6A CN104624403A (en) | 2015-01-04 | 2015-01-04 | Hydrocyclone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510001766.6A CN104624403A (en) | 2015-01-04 | 2015-01-04 | Hydrocyclone |
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| CN104624403A true CN104624403A (en) | 2015-05-20 |
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| CN201510001766.6A Pending CN104624403A (en) | 2015-01-04 | 2015-01-04 | Hydrocyclone |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108124430A (en) * | 2016-12-26 | 2018-06-05 | 江门市蓬江区鑫浩源科技有限公司 | A kind of vortex solid-liquid separator |
| CN110577298A (en) * | 2019-10-12 | 2019-12-17 | 江苏中嘉华新环保科技有限公司 | Vertical oil, water, solid three-phase separation composite set |
| CN115475707A (en) * | 2022-09-19 | 2022-12-16 | 湖南三友环保科技有限公司 | Low-density-difference composite powder biological carrier particle hydraulic screening device |
| CN115569746A (en) * | 2022-09-19 | 2023-01-06 | 湖南三友环保科技有限公司 | Secondary hydraulic screening device for high-concentration low-density-difference composite powder biological carrier particles |
-
2015
- 2015-01-04 CN CN201510001766.6A patent/CN104624403A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 李枫等: "三次曲线的液-液水力旋流器管形设计", 《化工机械》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108124430A (en) * | 2016-12-26 | 2018-06-05 | 江门市蓬江区鑫浩源科技有限公司 | A kind of vortex solid-liquid separator |
| CN108124430B (en) * | 2016-12-26 | 2020-08-28 | 江门市蓬江区鑫浩源科技有限公司 | Vortex solid-liquid separator |
| CN110577298A (en) * | 2019-10-12 | 2019-12-17 | 江苏中嘉华新环保科技有限公司 | Vertical oil, water, solid three-phase separation composite set |
| CN115475707A (en) * | 2022-09-19 | 2022-12-16 | 湖南三友环保科技有限公司 | Low-density-difference composite powder biological carrier particle hydraulic screening device |
| CN115569746A (en) * | 2022-09-19 | 2023-01-06 | 湖南三友环保科技有限公司 | Secondary hydraulic screening device for high-concentration low-density-difference composite powder biological carrier particles |
| WO2024060535A1 (en) * | 2022-09-19 | 2024-03-28 | 湖南三友环保科技有限公司 | Hydraulic screening device for low-density-difference composite powder biological carrier particles |
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Application publication date: 20150520 |