JPS62501685A - cyclone separator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] cyclone separator The present invention is a method for separating more concentrated components from less concentrated components of a liquid mixture. Regarding cyclone separators. This separator has an axially extending separation chamber, one of which a separation chamber, having means for inlet of the mixture with a tangential flow component towards the end; has an overflow outlet located axially adjacent said one end, and further said separation chamber has a front end. From a portion having a relatively large cross-sectional area at one end to the opposite side of the one end of relatively small size with an axially located lower outlet at the end of the separation chamber. It is approximately tapered up to the part that has a cross-sectional area, and components with higher concentrations are actually more concentrated. The lower part flows out in a form that surrounds the core located in the inner axial direction, which is a thinner component. It moves towards the mouth, with less concentrated components (and for most of its length) is subjected to a pressure difference over the area, causing its components to flow to the overflow outlet Ru.

According to one aspect of the invention, the cyclone separator described above is characterized in that the inlet means are in the separation chamber. defined by the portion and at least one inlet tube communicating with the portion; section is a section of the separation chamber at the same longitudinal position as the or each inlet tube; , and the or each inlet tube is contoured. The contour according to the invention One special configuration is an inlet arranged so that the liquid flows into a spiral channel. It is volute shaped.

In another embodiment, the or each inlet pipe is an inner and outer part when viewed in the axial direction of the separator. exhibits a contour. an outer contour extends from a first position to match the perimeter of said portion of the separation chamber; ing. At least an inner projection of said inner contour is such that said inner contour or a projection thereof is the outer contour extends from a second location that matches the outer contour; a point located in a plane perpendicular to the axis and having the origin at the first position; 1 vector T becomes larger than this vector T as the size of vector T increases. The angle θ between the first position and a line tangent to the periphery does not substantially decrease. The cross-sectional area perpendicular to the direction of flow is approximately It contracts in the direction of flow.

The outer contour was found to be more important than the inner contour. But long In a preferred form, the inner contour is characterized by a second vector U; the vector U describes a particular point on the inner contour and has its origin at said second position; , as the magnitude of the vector U increases, the vector U and the second position are and a line tangent to said perimeter is at least equal to the substantial size of the vector U. and never less than -0,52 radians .

In an inlet with a profile according to the invention, it is possible to provide more than one inlet opening. It was found that it was not necessary.

According to another aspect of the present invention, the overflow outlet portion penetrates an end wall of the separation chamber to The cyclone separator, as mentioned at the beginning, is connected to the separation chamber end wall. It provides:

According to another aspect, the invention provides that the overflow outlet extends through an end wall of the separation chamber and A cyclone, as mentioned at the outset, constructed in the form of a duct projecting into the separation chamber. The purpose of the present invention is to provide a ion separator.

Next, the present invention will be described in detail based on embodiments with reference to the accompanying drawings.

FIG. 1 is a sectional view of a separator constructed according to the present invention, and FIG. 2 is taken along line n--n in FIG. 3 and 4 show a modification of the end wall of the separation chamber of FIG. 1. figure, FIG. 5 is a diagram showing a modification of the overflow port of the separator shown in FIG. 1, and FIG. a detailed axial cross-sectional view of the inlet means of the separator constructed with FIG. 7 is a diagram similar to FIG. 6, but showing a preferred form of the inflow pipe; FIG. 8 is a schematic axial view of the deformed inlet tube.

The separator 10 comprises three cylindrical separation chamber sections 14 arranged along a common axis; It includes a separation chamber 12 having 16 and 18. Each of these separation chamber parts has a diameter and the length is dl,lI:dz.

12; and d2,13. Portion 14 is larger in diameter than portion 16 and portion 1 8 is smaller in diameter than portion 16. Details of international application PCT/AU8310002B Install a flow control means (not shown) at the exit from the cylindrical section as described in the book. However, in this embodiment, the outlet end has an overflow opening 2 from the cylindrical portion 18. 4 is shown as being provided. Tapered portion between portions 14 and 16 17 can be provided. The illustrated section 16 is the first parallel shape following the tapered section. Although the portion 16 is shown as a shaped portion, in practice the portion 16 is shown as having a constant temperature along its entire length. It is also possible to form it as a part with a material.

An involute type entry vibe 20 is provided in the separation chamber portion 14 and an inlet opening 23 There is an opening in the side wall of the separation chamber. An overflow outlet 25 is provided on the axis of the separation chamber portion 14. and is led to an axial overflow pipe 27. As shown in Figure 2, The involute-type entry vibe 20 is spiral-shaped around the separation chamber portion 14 and has an opening. The cross-sectional area gradually decreases as it approaches 23. pipe 20 and opening 2 3 can have a rectangular cross section.

In use, separator 10 functions generally in accordance with conventional practice. That is, the entrance vibe The liquid mixture flowing into the separation chamber through 20 is subjected to centrifugal force, resulting in separation. The liquid component is discharged from the outlet 24 on the one hand and via the outlet 25 on the other hand.

In this way, the more concentrated phase component forms an annular cross-sectional flow around the walls of the separation chamber. while the lighter phase component forms a central core 40, and this central core is subjected to a differential pressure which forces the liquid therein out of the overflow port 25.

By using an involute pipe 20, only a single opening 23 can be used. It was discovered that there is a good thing. By the way, conventionally many entrance openings were provided. Ta. This means that the assembled device The disadvantage is that it is relatively large and complex. Therefore, single entrance vibe By reducing the number of vibrator connections that need to be assembled. It will be possible to do so. Further, the inflowing liquid mixture advances in a spiral manner to the separation chamber 14. When it is removed, it has already been subjected to some separation action based on centrifugal force, so It can be seen that the separation action is facilitated by using the volute pipe 20. Served.

The separation chamber 12 is constructed in accordance with Australian Patent Specification No. 47105/79. The disclosure of the patent shall constitute part of the patent specification (hereinafter referred to as the conclusion). It matches. In specification No. 47105/79, the separation chamber is as follows: It is described as having a dimensional relationship.

10≦1□/d2<　25 0.04≦4 Ai/d+”<0.100.1≦d o/dz<0. 25 Here, A is the total cross-sectional area of the supply inlet defined by the inlet opening 23, and do is the overflow. This is the diameter of the outlet portion 25, and the other symbols have the meanings given above. Also, Aus In the specification of Tralia patent application no. 84713/82, a modified configuration is as described above, except that the ratio specified by o/dz is in this case less than 0.1. It is described as having such parameters.

A separator constructed according to this variation is also suitable for use in the present invention. Ru. In any case, the separator of the invention generally has a ratio of lz/dz of at least Advantageously, also equal to 10. Also, it is possible to obtain a more concentrated form, such as water. From a relatively large amount of liquid to a relatively small amount of less concentrated liquid, such as oil For separators intended to separate the ratio d, > d, from 1.5 to 3.0 range, for example 2.0.

However, in practice, it is not necessary to adhere to the above-mentioned size range of the overflow outlet. Something was discovered.

In FIG. 6 the outline of the inlet of the invention is shown in more detail. , where the separation The inlet means of the vessel include an inlet pipe 8 with a part of the separation chamber of the longitudinally adjacent separator. It is shown as consisting of 0. In this regard, -C-wise, the separation shown in FIG. The vessel is described as having three distinct sections of successively decreasing diameter. For example, from the large-diameter end adjacent to the overflow opening to the small-diameter end adjacent to the lower outflow It is a wood requirement that the wood be constructed so that it has a substantially tapered shape from end to end. There isn't. Tube 80 is shown as having an outer contour 82 and an inner contour 84. There is. Here, the diameter of the cyclone separator as shown in Figure 6 is as shown in Figure 1. It corresponds to the diameter d.

This is because the inlet tube 80 (as in the structure of FIG. 1) is connected to the separation chamber at its large diameter end. This is because it is connected to

A tube 80 extends inwardly from a location indicated schematically by reference numeral 85 towards the separation chamber. Conceivable. Point 85 is calculated inward toward the separation chamber, and beyond this point, It is defined that the inflow flow rate cannot be expressed by a simple flow rate equation. Ru. More specifically, regions 83, 8 on the outer and inner contours that match region 85 7 is if the contour is projected outward from there in a parallel relationship. separator in much the same way as if the contours of This is the part where the function is activated. The term ``projected outward'' refers to the confluence of each contour. It means the projection from each contour that is approximately tangent in position. each outside and From the respective parts 83 and 87 on the inner contour, these contours It extends radially and meets the circumferential surface 86 of the separator. Contour like this The positions where the curves meet the circumferential surface 86 are indicated by the letters rCJ and rEJ, respectively.

In practice, contour 84 coincides with circumference 86 at site rEJ for mechanical reasons. is shown as a circumference 86 joined by a continuous contour inward until ( By providing a rounded portion 84a (shown with a broken line), the contour 84 and circumference 86 are It is often easier and more effective to go around the connection points between.

The inner and outer contours are generally preferably expressed by the following equations.

(a) α × η × 2π + α (b) 0.35<α<1.5 Here, η0 is the inflow as seen from the axial direction of the separation chamber. is the length of the outer contour 82 of the tube, and D is the diameter of the part of the separation chamber that defines the circumference 86. be. This contour length extends between positions "C" and 83. αD is minute This is the length of the inner contour 84 when viewed from the axial direction of the separation room. This contour length is determined by the position rEJ and 87.

In general, the outer contour 82 is such that a vector T describes the location of a particular point on this outer contour. and which is included in a plane perpendicular to the axis and has its origin at position 1rCJ. , and when the magnitude of vector T increases, vector T and the above position WrcJ are The angle θ between the tangent line 92 of the circumference 86 passing through is less than Dη for all magnitudes of T. (and not less than -0,1 radians) It is set as follows.

(d) Similarly, draw the position of a specific point on the inner contour 84 and place its origin at the position rEJ. A vector U with points becomes smaller than the vector U when the magnitude of this vector increases. The angle f between the tangent line 93 of the circumference passing through the position rEJ is α. smaller than For all magnitudes of vector U, i.e. at least for most of vector U Never less than 0.52 radians in any size It is set so that it does not become smaller. The approximate size of vector U is In the vicinity of position rEJ, as mentioned above, due to the possible roundness of the inner contour, vector U means that it cannot be defined.

Cross-sectional area A1 of the tube 80 measured in the radial and axial plane passing through the position ffrEJ is preferably defined as follows.

0.04<4Az/πD”<0.1 Also, between the constants η and α, the following It is preferable to maintain a good relationship.

α × η × 2π + α The above relationship between the constants α and η shows that when the separator is lower It is most suitable if it has a maximum diameter relatively larger than the diameter of the outlet.

However, if this ratio is relatively small, e.g. less than 3, then the constant α It is preferable to place a larger limit on the relative value to η.

Therefore, the following formula is appropriate.

1) / d < 3 α〈η〈2π+α 0.35<α<2 Here, d indicates the diameter of the lower outlet corresponding to the diameter d2 in FIG.

With reference to FIG. 7, in one configuration according to the invention, the The angle ρ measured between sites “C” and “E” was 86°. The inner contour 84 is terminating in a curved section 84a joining the circumference 86, which section has a diameter of approximately 0.5 with a degree of curvature of am and approximately 110° from point "c" around the axis of the separator. It is located in ro. In this example, to create a contour of 82°84, the following steps are taken: The mathematical relationship was found to be appropriate.

r　0-0.50〇,0143[IZO'-'　+0.0057DZ,'・” + 0.00286oZo'' II + O,0O157DZo'・Sri = 0.5D+0.0714DZ, "+0.00714DZ="+0.0143DZ , '+0.00714DZi' where ro is on the outer contour 82 from the axis of the separator and ri is the distance from the axis of the separator to a particular point on the inner contour 84. , and Zo is calculated from the line 91 connecting the separator axis and point rCJ, is the angle clockwise around the axis of the separator to a specific point on the outer contour 82, Z, is the angle starting from line 91 and clockwise to a particular point on inner contour 84.

The formula defining these contours 82, 84 is angle 2. ．． 2° is within the following range It is preferable that there be.

0°kuZ. <150° 0°>Z,>5Q° or at least 24°〉Z5〉60° The tube 80 has a long side with a length W extending parallel to the axis of the separator and a separation t, where XW=A5. and D/35<t<D/6 Generally, W is greater than t.

FIG. 8 shows yet another embodiment of the separator according to the present invention, in which the flow The entry tube 80 is not perpendicular to the separator axis 95 as shown in FIG. It is shown as extending at an angle with a mean channel 93 for liquid flow. this In this case, the axis 93 of the tube 80 makes an angle with respect to the axis in the following range:

80° ρ〈95゜ If this tube has a rectangular cross-sectional shape, at least the length q, assuming q is smaller than α. A rectangular cross section exceeding D is desirable.

In this specification, all angles are expressed in radians unless otherwise specified. It should be noted that

The shape of the inlet of the separator described above also applies when two or more pipes 80 are provided. Can be easily adopted. In this case, one half of the separator passes through each point rEJ. The total cross-sectional area of all tubes measured radially should be equal to the area A, For example, if the formula tXW=At is the number of tubes 80, then Ai/n It is obvious that it should be replaced with Also, all pipes are not necessarily the same. It should be noted that there is no need to Especially if they are not identical, the sum The area A, is a function of the length and width of the feed pipe at a considerable cross-sectional area as follows: .

Σtn　X　Wn　=A　=　, where tn and Wn are respectively of the n-th tube convergence and length.

The separator described above exhibits excellent performance characteristics when separating a small amount of oil from a large amount of water. Ru.

FIG. 3 is a modification of the separator shown in FIG. Here, the portion adjacent to the overflow outlet portion 25 is The end wall 5o of the room separating portion 14 is formed in a concave shape. In FIG. 4, the end wall 50 is Another variant is shown which exhibits a convex shape when viewed in axial section.

FIG. 5 shows yet another modification in which the overflow inlet section 25 penetrates the wall 50 and has a short distance. A portion 27a extending into the separation chamber 14 (in this embodiment, in the axial cross section) (shown as a straight line).

A single inlet is adopted to form the inlet means of the separator in the shape described above. Although the illustration is only for the case where the It can be advantageously employed even in cases where

In this specification, the term "involute" refers to winding in a coil-like manner from a basic circle. It is used to represent the trajectory curve of one string in the case of Of the above or each inflow pipe The side and outer contours are generally formed as involute curves. however , each contour is defined by a combined involute curve that respectively defines basic circles of various diameters. or the projected starting position on each base circle is relative. There are gaps in the circumferential direction.

The arrangements described above have been advanced for illustrative purposes only and are defined in the appended claims. Without departing from the spirit and scope of the present invention (various modifications may be made thereto). I can do it.

FIG Pisho 6 international search report Continuation of page 1 Priority claim 0198 January 22nd O Philippines (PH) ■317540198 ``April 4th [phase] Australia (AU) ■40909/85 special edition Showa 62-5 01685 (8)

Claims (1)

[Claims] 1. Cylinders for separating more concentrated components from less concentrated components of liquid mixtures A Chron separator, the separator having a separation chamber extending in the axial direction, and having a separation chamber at one end thereof. the separation chamber has a means for inlet of the mixture with a tangential flow component; an overflow outlet located axially adjacent one end; separation of the opposite side of said one end from a portion having a cross-sectional area of relatively large size in Relatively small size cross-sectional area with axially located lower outlet at the chamber end It has a nearly tapered shape up to the part where it has a toward the lower outlet in a form that surrounds the core located in the inner axial direction, which is the main component. The less concentrated components flow over at least most of their length. The inflow means is configured to flow into the overflow port under the influence of the pressure difference, and the inflow means defined by a portion of the separation chamber and at least one inlet tube communicating with the portion; , the part is a part of the separation chamber at the same longitudinal position as the or each inlet pipe; The or each inlet pipe has an inner and outer contour when viewed in the axial direction of the separator. and the outer contour extends from a first position to match the perimeter of the portion of the separation chamber. and at least an inner projection of the inner contour is such that the inner contour or its projection is on the circumference. extending from a matching second location, the outer contour extending from a second matching location; a first base that is in a plane perpendicular to the axis and has the first position as the origin; As the magnitude of vector T increases, this vector T and the The angle θ between the line passing through one position and tangent to the circumference does not substantially decrease. -0.1 radian, and the cross-sectional area perpendicular to the direction of flow is approximately A cyclone separator characterized by contracting in the direction of. 2. The inner contour is characterized by a second vector U, which vector U depicting the position of a particular point on the contour and having its origin at said second position, a vector U As the magnitude of increases, the circumference passing through this vector U and the second position The angle L between the tangent lines decreases over the substantial magnitude of the vector U Claim 1: never less than -0.52 radians The cyclone separator described in . 3. The inflow means is smaller than ηD as the first vector T increases. For all magnitudes of the vector T, the angle θ does not substantially decrease. -0.1 radian, and as said second vector U increases, So, at least for the substantial size of vector U, α. smaller vector For all sizes of U, the angle does not decrease substantially and is −0.5 not less than 2 radians, where (c) α<η<2π+α, (d) 0.35<α<1.5, where ηD is the length of the external contour of the inlet pipe in the axial direction of the separator, and D is the length of the external contour of the separation chamber. diameter of the section, αD is the length of the internal contour of the inlet pipe in the axial direction of the separation chamber, ηD is the external Measured from the first position where the contour matches the perimeter of that part of the separation chamber, αD is at least as measured from a second position where the inward protrusion of the internal contour conforms to said periphery; 3. A cyclone separator according to claim 2. 4. (e) 0.04<4Ai/πD2<0.1, where Ai is the cross-sectional area of the tube Or, if there are two or more pipes, it is the sum of the cross-sectional areas of all said pipes, and the said or each cross-section The area is measured in planes approximately perpendicular to the flow of the inlet pipe and alternating with the end points of said inner contour. A cyclone separator according to claim 3. 5. (f) The cyclone separator according to claim 4, wherein α<η<π+α. 6. The or each tube has a rectangular cross section over at least a length qD for q<α has a shape, the cross section has a length Wn and a width tn, (g) ΣtnXWn=Ai and (h) D/35<t<D/6, Claims where Wn is the cross-sectional length of the n-th pipe, and tn is the width of the n-th pipe. Cyclone separator according to item 4 or 5. 7. The sides of said or each cross section of length W are generally aligned in the axial direction of the separator and have a width t. The size according to claim 6, wherein the sides are aligned generally perpendicular to the axial direction of the separator. Chron separator. 8. 8. The cyclone separator according to claim 7, wherein W>t. 9. The or each tube extends at a respective angle to the axis of the separator, viewed perpendicular to said axis. and the average flow of the liquid mixture as it flows through the shaft and the inlet tube. The angle between In terms of (j) 80°<ρ<95° where the angle ρ is, for values smaller than 90°, practically along the flow path to the separation chamber. Incoming liquid is directed from the larger diameter section of the separation chamber to the smaller diameter end The cyclone according to any one of claims 1 to 8, which has a motion component that separator. 10. D/d>3, where d is the diameter of the overflow outlet. The cyclone separator according to any one of Items 1 to 9. 11. D/d≦3, α<η<2π+α, big 0.35<α<2 A cyclone separator according to any one of claims 1 to 9. 12. Claims 1 to 11, wherein the or each inflow pipe has a substantially involute shape. Cyclone separator according to any one of paragraphs. 13. Claim 1, wherein the inflow tube has a generally involute outer contour. Cyclone separator according to any one of items 1 to 12. 14. A service for separating more concentrated components from less concentrated components of a liquid mixture. An Ikron separator, the separator having an axially extending separation chamber, one end of which The separation chamber has an inlet means for the mixture with a tangential flow component towards the an overflow outlet located axially adjacent the one end; From the portion having a relatively large cross-sectional area at the end to the portion on the opposite side of the one end. Relatively small size cross-section with axially located lower outlet at the exit end It has a substantially tapered shape up to the part where the At the bottom outlet in a form that surrounds the core located in the inner axial direction, which is a thin component. the more concentrated components flow at least over most of their length. The component is caused to flow to the overflow port under the influence of the pressure difference, and the inflow means is defined by a portion of the separation chamber and at least one inlet tube communicates with the portion. and the part is a part of the separation chamber at the same longitudinal position as the or each inlet pipe. and the or each inlet pipe has an inner and an outer profile when viewed in the axial direction of the separator. and the outer contour extends from a first position to match the periphery of the portion of the separation chamber. and at least an inner projection of the inner contour is such that the inner contour or a projection thereof is , and the outer contour extends from a second position coincident with the outer contour, and the outer contour , and is in a plane perpendicular to the axis, and has the first position as the origin. As the magnitude of vector T increases, this vector T and the above The angle θ between the first position and a line tangent to the circumference is 0.1 radian from O. within the range, and the cross-sectional area perpendicular to the direction of flow is approximately contracted in the direction of flow. A cyclone separator featuring: 15. Said inner contour is characterized by a second vector U, which vector U is draw the position of a particular point on the inner contour and have its origin at the second position; As the magnitude of torque U increases, this vector U and the The angle L between the line tangent to the surrounding area is within the range of 0 to 0.52 radian. Cyclone separator according to scope 14.