CN113599885B - Integrated anti-blocking screen device with continuously adjustable - Google Patents
Integrated anti-blocking screen device with continuously adjustable Download PDFInfo
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- CN113599885B CN113599885B CN202110825582.7A CN202110825582A CN113599885B CN 113599885 B CN113599885 B CN 113599885B CN 202110825582 A CN202110825582 A CN 202110825582A CN 113599885 B CN113599885 B CN 113599885B
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- 238000007873 sieving Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
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- 239000011148 porous material Substances 0.000 description 1
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- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
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Abstract
The invention discloses a continuously adjustable integrated anti-blocking screen device which comprises a screen framework, an upper screen joint and a lower screen joint, wherein the upper screen joint and the lower screen joint are arranged at two ends of the screen framework; the screen framework comprises a plurality of axial framework lines, oblique framework lines and adjustable framework lines; the axial skeleton lines are connected between the upper screen joint and the lower screen joint and are parallel to the axes of the upper screen joint and the lower screen joint, and a plurality of axial skeleton lines are uniformly distributed along the circumferential direction to form a cylindrical skeleton coaxial with the upper screen joint and the lower screen joint; the oblique framework lines are obliquely fixed on the cylindrical framework, a plurality of oblique framework lines are uniformly distributed along the circumferential direction, and an adjustable framework line with the same direction as the oblique framework lines is arranged between every two adjacent oblique framework lines; the adjustable frame line can move radially to change the gap between the adjustable frame line and the oblique frame lines on the two sides of the adjustable frame line, so that the porosity of the screen frame is adjusted. The sieving porosity of the invention can be adjusted in real time according to the change of working conditions, and meanwhile, the invention has the function of anti-blocking, thereby greatly improving the efficiency of repairing operation.
Description
Technical Field
The invention belongs to the technical field of water resource restoration and filtering equipment, and particularly relates to a continuously adjustable integrated anti-blocking screen device.
Background
In the well industry, screens, also known as strainer pipes, are a key component of water filtration and contaminated site remediation equipment. The screens are typically located in the lower-middle portion of the rehabilitation apparatus and are used primarily to filter and retain silt and provide a passage for the hydrodynamic circulation. The sieve tube needs to bear the action of high confining pressure from the stratum during the working process, therefore, in order to ensure higher working strength, the sieve tube mainly adopts the manufacturing processes of winding, binding, welding, laser cutting and the like at present, but the porosity of the sieve tube after the manufacturing is a fixed value and cannot be properly adjusted according to the change of the environment so as to achieve the optimal effect.
Meanwhile, after the device is used for a period of time, impurities in soil can be deposited in the pores of the screen mesh, so that the screen mesh is blocked, the porosity is reduced, and the smooth development of hydrodynamic circulation and repair operation is influenced. At the moment, the screen needs to be lifted out of the hole bottom regularly for maintenance and blockage removal, so that the auxiliary operation time is greatly increased, and the repair efficiency is reduced.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a continuously adjustable integrated anti-blocking screen device which is higher in strength than a conventional screen, can adapt to more repairing fields, can adjust the screening porosity in real time according to the change of working conditions, has a certain anti-blocking function and greatly improves the efficiency of repairing operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a continuously adjustable integrated anti-blocking screen device comprises a screen framework, and a cylindrical upper screen joint and a cylindrical lower screen joint which are arranged at two ends of the screen framework and are coaxial with each other; the screen framework comprises a plurality of axial framework lines, oblique framework lines and adjustable framework lines;
the axial skeleton lines are connected between the upper screen joint and the lower screen joint and are parallel to the axes of the upper screen joint and the lower screen joint, and a plurality of axial skeleton lines are uniformly distributed along the circumferential direction to form a cylindrical skeleton coaxial with the upper screen joint and the lower screen joint; the oblique framework lines are connected between the upper screen joint and the lower screen joint and are obliquely fixed on the cylindrical framework, a plurality of oblique framework lines are uniformly distributed along the circumferential direction, and an adjustable framework line with the same direction as the oblique framework lines is arranged between every two adjacent oblique framework lines; each adjustable framework line is connected with an adjusting assembly which can push the adjustable framework line to move radially so as to change the gap between the adjustable framework line and the oblique framework lines on the two sides of the adjustable framework line, thereby adjusting the porosity of the screen framework;
the adjusting assembly comprises a radial support rod and a radial support rod ring, wherein the radial support rod is connected with the adjustable framework line and is positioned in the screen framework; the conical outer wall of the adjusting ring is in contact with the axial supporting rod, and when the adjusting ring moves axially, the axial supporting rod moves radially under the pushing of the conical outer wall; and radial spring assemblies are arranged between the axial support rod and the upper screen joint and between the axial support rod and the lower screen joint so that the axial support rod can radially reset.
The invention also comprises the following technical characteristics:
specifically, the axial skeleton line is a round rod body;
the cross section of the oblique framework line is an isosceles triangle, three vertexes are in transition with arcs of adjacent sides, and arcs corresponding to vertex angles of the isosceles triangle in the cross section of the oblique framework line always lean against the axial framework line;
the section of the adjustable skeleton line is circular and is positioned in a gap between the axial skeleton line and the two oblique skeleton lines.
Specifically, an adjusting nut, an adjusting ring and a first annular bulge I and a second annular bulge I are sequentially arranged on the inner wall of the upper screen joint along the direction close to the screen framework; a first annular bulge II and a second annular bulge II are sequentially arranged on the inner wall of the lower screen joint along the direction close to the screen framework;
the adjusting nut is of an annular structure, is coaxial with the upper screen joint and is in threaded connection with the inner wall of the upper screen joint so as to adjust the axial position of the adjusting nut;
radial grooves which are uniformly distributed in the axial direction are formed in the first annular bulge I, the second annular bulge I, the first annular bulge II and the second annular bulge II, and the radial grooves correspond to the axial support rods one by one so as to place the axial support rods; the radial spring assemblies are arranged between the first annular bulge I and the second annular bulge I and between the first annular bulge II and the second annular bulge II.
Specifically, the adjusting ring is of a structure with a central through hole, and the outer wall of the adjusting ring is sequentially provided with a cylindrical outer wall, a shoulder and a conical outer wall with the outer diameter gradually reduced from top to bottom.
Specifically, the axial support rods are provided with a plurality of axial support rods which correspond to the adjustable skeleton lines one by one, the axial support rods are uniformly distributed in the circumferential direction and enclose a cylindrical frame, and the cylindrical frame is coaxial with the screen skeleton, the upper screen joint and the lower screen joint and is positioned in the three parts; one end of the cylindrical frame leans against the conical outer wall of the adjusting ring;
one end of the axial support rod is of a spherical structure and is positioned in the upper screen joint, and the other end of the axial support rod is a cylindrical plug and is positioned in the lower screen joint; and the axial support rod is provided with an upper chuck and a lower chuck, the upper chuck and the lower chuck are both positioned between the second annular bulge I and the second annular bulge II, the upper chuck abuts against the second annular bulge I, and the lower chuck abuts against the second annular bulge II, so that the axial limit is performed on the axial support rod.
Specifically, the radial spring assembly comprises a first arc-shaped inner plate, a first arc-shaped outer plate coaxially sleeved outside the first arc-shaped inner plate, a plurality of springs arranged between the first arc-shaped inner plate and the first arc-shaped outer plate, a second arc-shaped inner plate, a second arc-shaped outer plate coaxially sleeved outside the second arc-shaped inner plate, and a plurality of springs arranged between the second arc-shaped inner plate and the second arc-shaped outer plate; the first arc-shaped inner plate and the second arc-shaped inner plate are opposite but not in contact with each other and are sleeved outside a cylindrical frame formed by the axial supporting rods, and the first arc-shaped outer plate and the second arc-shaped outer plate are opposite but not in contact with each other and lean against the inner wall of an upper screen joint between the first annular bulge I and the second annular bulge I or the inner wall of a lower screen joint between the first annular bulge II and the second annular bulge II.
Specifically, a compression spring is arranged between the shoulder of the adjusting ring and the first annular bulge I, and the compression spring is coaxial with the upper screen joint; under the action of the axial force of the compression spring, the adjusting ring abuts against the adjusting nut, and the compression spring can be used for axial resetting of the adjusting ring.
Specifically, the inner wall of the adjusting nut is provided with four notches which are uniformly distributed in the circumferential direction and used for installing and adjusting the tool during manual adjustment.
Specifically, the upper screen joint, the lower screen joint, the axial skeleton line and the oblique skeleton line are welded together.
Compared with the prior art, the invention has the beneficial technical effects that:
1. according to the invention, the confining pressure resistance of the screen device for water resource restoration is further improved, the main structure of the screen device is formed by connecting and fixing the upper screen joint, the lower screen joint, the axial skeleton line and the oblique skeleton line together through a special welding process, the cross section of the oblique skeleton line tightly attached to and wound on the axial skeleton line is in a triangle shape with arc transition, and the triangle is most stable in each shape, so that the viability of the screen device in different stratum environments is enhanced.
2. The screen device can adjust the porosity of the screen in real time according to the change of the working condition so as to achieve the optimal working effect suitable for the working condition and enhance the dynamic adaptability of the screen device during working.
3. The integrated screen has the anti-blocking function, and the anti-blocking function can be automatically switched to the automatic adjustment of the porosity of the screen after being normally implemented, so that the auxiliary operation time is reduced, and the working efficiency is increased.
Drawings
FIG. 1 is a quarter sectional schematic view of the present invention;
FIG. 2 is a schematic view of the adjusting nut of the present invention;
FIG. 3 is a schematic cross-sectional view of the adjusting ring of the present invention;
FIG. 4 is a schematic view of a radial spring assembly according to the present invention;
FIG. 5 is a schematic cross-sectional view of a first annular projection I of the upper screen attachment of the present invention;
FIG. 6 is a schematic cross-sectional view of an oblique skeleton line and an adjustable skeleton line according to the present invention;
FIG. 7 is a schematic diagram illustrating the principle of the automatic adjustment and anti-blocking method of the present invention.
Reference signs mean:
1. the device comprises a screen framework, an upper screen joint, a lower screen joint, a regulating ring, a radial spring assembly, a regulating nut, a compression spring, an upper well column outer pipe, a lower well column outer pipe, a driving rod body, a circular water passing port, an axial driving device, a displacement sensor, a circulating water monitoring device, a control module and a construction stratum, wherein the screen framework comprises 2 parts of an upper screen joint, 3 parts of a lower screen joint, 4 parts of a regulating ring, 5 parts of a radial spring assembly, 6 parts of a regulating nut, 7 parts of a compression spring, 8 parts of an upper well column outer pipe, 9 parts of a lower well column outer pipe, 10 parts of a driving rod body, 11 parts of a circular water passing port, 12 parts of an axial driving device, 13 parts of a displacement sensor, 14 parts of a circulating water monitoring device, 15 parts of a control module and 16 parts of a construction stratum;
101. the structure comprises an axial skeleton line, 102, an oblique skeleton line, 103, an adjustable skeleton line, 104, a radial support rod, 105, an axial support rod, 1051, an upper chuck, 1052, a lower chuck, 201, a first annular bulge I, 202, a second annular bulge I, 203, a radial groove, 301, a first annular bulge II, 302, a second annular bulge II, 401, a conical outer wall, 402, a cylindrical outer wall, 403, a shoulder, 501, a first arc-shaped inner plate, 502, a first arc-shaped outer plate, 503, a spring, 504, a second arc-shaped inner plate, 505, a second arc-shaped outer plate, 601 and a notch.
The invention is described in detail below with reference to the drawings and the detailed description.
Detailed Description
The present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention fall within the protection scope of the present invention. The present invention will be described in further detail with reference to examples.
Example 1:
the embodiment provides a continuous adjustable integrated anti-blocking screen device, which comprises a screen framework 1, and a cylindrical upper screen joint 2 and a cylindrical lower screen joint 3 which are arranged at two ends of the screen framework 1 and are coaxial with each other; the screen frame 1 comprises a plurality of axial frame lines 101, oblique frame lines 102 and adjustable frame lines 103.
The axial skeleton lines 101 are connected between the upper screen joint 2 and the lower screen joint 3 and are parallel to the axes of the upper screen joint and the lower screen joint, and a plurality of axial skeleton lines 101 are uniformly distributed along the circumferential direction to form a cylindrical skeleton coaxial with the upper screen joint 2 and the lower screen joint 3; the oblique framework lines 102 are connected between the upper screen joint 2 and the lower screen joint 3 and are obliquely fixed on the cylindrical framework, a plurality of oblique framework lines 102 are uniformly distributed along the circumferential direction, and an adjustable framework line 103 with the same direction as the oblique framework lines 102 is arranged between every two adjacent oblique framework lines 102; each adjustable frame line 103 is connected with an adjusting component, and the adjusting component can push the adjustable frame line 103 to move radially to change the gap between the adjustable frame line 103 and the oblique frame lines 102 on the two sides of the adjustable frame line, so as to adjust the porosity of the screen frame 1.
The adjusting assembly comprises a radial supporting rod 104 which is connected with an adjustable skeleton line 103 and is positioned in the screen framework 1, an axial supporting rod 105 which is vertically connected with the radial supporting rod 104 and is positioned in the screen framework 1, the upper screen joint 2 and the lower screen joint 3, and an adjusting ring 4 which is positioned at one end of the axial supporting rod 105, is coaxially arranged on the inner wall of the upper screen joint 2 and can axially move; the conical outer wall 401 of the adjusting ring 4 is in contact with the axial support rod 105, the upper part and the lower part of the axial support rod 105 are respectively limited in the radial grooves 203 on the inner walls of the upper screen joint 2 and the lower screen joint 3, and when the adjusting ring 4 moves axially, the axial support rod 105 moves radially under the push of the conical outer wall 401; a radial spring assembly 5 is provided between the axial support bar 105 and the upper and lower screen joints 2, 3 to enable radial repositioning of the axial support bar 105.
The axial skeleton line 101 is a round rod body; the cross section of the oblique framework line 102 is an isosceles triangle, three vertexes are in arc transition with adjacent sides, and the arc corresponding to the vertex angle of the isosceles triangle of the cross section of the oblique framework line 102 always leans against the axial framework line 101; the cross section of the adjustable skeleton line 103 is circular and is located in the gap between the axial skeleton line 101 and the two oblique skeleton lines 102.
The inner wall of the upper screen joint 2 is sequentially provided with an adjusting nut 6, a placing adjusting ring 4, a first annular bulge I201 and a second annular bulge I202 along the direction close to the screen framework 1; a first annular bulge II301 and a second annular bulge II302 are sequentially arranged on the inner wall of the lower screen joint 3 along the direction close to the screen framework 1; the adjusting nut 6 is of an annular structure, is coaxial with the upper screen joint 2 and is in threaded connection with the inner wall of the upper screen joint 2 so as to adjust the axial position of the adjusting nut; radial grooves 203 which are uniformly distributed in the axial direction are formed in the first annular bulge I201, the second annular bulge I202, the first annular bulge II301 and the second annular bulge II302, and the radial grooves correspond to the axial support rods 105 one by one to place the axial support rods 105; radial spring assemblies 5 are provided between the first and second annular bosses I201 and I202 and between the first and second annular bosses II301 and II 302.
The adjusting ring 4 is a structure with a central through hole, and the outer wall of the adjusting ring 4 is sequentially provided with a cylindrical outer wall 402, a shoulder 403 and a conical outer wall 401 with gradually reduced outer diameter from top to bottom.
The axial support rods 105 are arranged in a plurality and correspond to the adjustable skeleton lines 103 one by one, the plurality of axial support rods 105 are uniformly distributed in the circumferential direction and enclose a cylindrical frame, and the cylindrical frame is coaxial with the screen skeleton 1, the upper screen joint 2 and the lower screen joint 3 and is positioned in the three parts; one end of the cylindrical frame rests on the conical outer wall 401 of the adjusting ring 4.
One end of the axial support rod 105 is of a spherical structure and is positioned in the upper screen joint 2, the other end of the axial support rod is a cylindrical plug and is positioned in the lower screen joint 3, and the cylindrical plug is used for connecting a screen device at the lower part of the well column, so that the upper screen device and the lower screen device of the well column can reach a synchronous state when being adjusted; an upper chuck 1051 and a lower chuck 1052 are arranged on the axial support rod 105, the upper chuck 1051 and the lower chuck 1052 are both positioned between the second annular bulge I202 and the second annular bulge II302, the upper chuck 1051 abuts against the second annular bulge I202, and the lower chuck 1052 abuts against the second annular bulge II302, so that the axial support rod 105 is axially limited.
The radial spring assembly 5 comprises a first arc-shaped inner plate 501, a first arc-shaped outer plate 502 coaxially sleeved outside the first arc-shaped inner plate 501, a plurality of springs 503 arranged between the first arc-shaped inner plate 501 and the first arc-shaped outer plate 502, a second arc-shaped inner plate 504, a second arc-shaped outer plate 505 coaxially sleeved outside the second arc-shaped inner plate 504, and a plurality of springs 503 arranged between the second arc-shaped inner plate 504 and the second arc-shaped outer plate 505; the first arc-shaped inner plate 501 and the second arc-shaped inner plate 504 are opposite but not in contact with each other and are sleeved outside a cylindrical frame surrounded by the axial support rod 105, and the first arc-shaped outer plate 502 and the second arc-shaped outer plate 505 are opposite but not in contact with each other and lean against the inner wall of the upper screen joint 2 between the first annular bulge I201 and the second annular bulge I202 or the inner wall of the lower screen joint 3 between the first annular bulge II301 and the second annular bulge II 302; specifically, the first arched outer plate 502 and the second arched outer plate 505 of the radial spring assembly 5 disposed in the upper screen joint 2 lean against the inner wall of the upper screen joint 2 between the first annular protrusion I201 and the second annular protrusion I202, and the first arched outer plate 502 and the second arched outer plate 505 of the radial spring assembly 5 disposed in the lower screen joint 3 lean against the inner wall of the lower screen joint 3 between the first annular protrusion II301 and the second annular protrusion II 302. The first and second arcuate outer plates 502 and 505 are opposed to each other without contact and the first and second arcuate inner plates 501 and 504 are opposed to each other without contact to allow room for the first and second arcuate inner plates 501 and 504 to move radially.
A compression spring 7 is arranged between the shoulder 403 of the adjusting ring 4 and the first annular bulge I201, and the compression spring 7 is coaxial with the upper screen joint 2; under the axial force of the compression spring 7, the adjusting ring 4 abuts against the adjusting nut 6, and the compression spring 7 can be used for axial resetting of the adjusting ring 4.
The inner wall of the adjusting nut 6 is provided with four circumferentially and uniformly distributed notches 601 for installing and adjusting the tool during manual adjustment.
The upper screen joint 2, the lower screen joint 3, the axial skeleton line 101 and the oblique skeleton line 102 are welded together.
The working principle of the embodiment is as follows: the top end of the axial support rod 105 in the upper screen joint 2 is abutted against the conical outer wall 401 of the adjusting ring 4, due to the radial change of the conical outer wall 401, the axial movement of the adjusting ring 4 in the axial direction can change the position of the axial support rod 105 in the radial direction, at this time, the adjustable skeleton line 103 welded integrally with the axial support rod 105 is changed synchronously in the radial direction, and meanwhile, the radial position change of the adjustable skeleton line 103 changes the gap between the adjustable skeleton line 103 and the oblique skeleton lines 102 on the two sides of the adjustable skeleton line, so that the purpose of adjusting the porosity of the screen is achieved; when the above change is set to a certain frequency, the adjusting function of the porosity of the screen is switched to the anti-blocking function of the vibration dredging.
Example 2:
this example provides a method for manually adjusting the porosity of a continuously adjustable integrated anti-clogging screen apparatus, which is implemented by the screen apparatus of example 1, and the initial state of the screen apparatus is as follows: under the action of a compression spring, an adjusting ring abuts against an adjusting nut, the adjusting nut is rotated to set an initial position for the adjusting ring in the axial direction, a top end spherical structure of an axial supporting rod in an upper screen joint abuts against the position of the minimum outer diameter of the conical outer wall of the adjusting ring, the axial supporting rod is closest to the central axis X of the screen device in the radial direction at the moment, an adjustable skeleton line welded and fixed with the axial supporting rod through the radial supporting rod is also closest to the central axis X in the radial direction, conversely, the circular section of the adjustable skeleton line is farthest from the sections of oblique skeleton lines on two sides, and the porosity of the screen device is also maximized at the moment;
the manual porosity adjustment method comprises the following steps:
a1, before the screen device is put into a well, the adjusting nut is rotated through a special tool to change the position of the adjusting ring in the axial direction, so that the position of an axial supporting rod which is close to the conical outer wall of the adjusting ring in the radial direction is changed, the position of an adjustable skeleton line which is fixedly connected with the axial supporting rod in a gap between the axial skeleton line and an inclined skeleton line is changed, and the porosity of the screen device is changed and reaches a set value;
and a2, connecting the manually adjusted screen device with the upper well column outer pipe and the lower well column outer pipe, and then putting the screen device into a working position in the well, wherein construction operation can be started at the moment.
Example 3:
the embodiment provides a mechanical automatic adjustment method for porosity of a continuously adjustable integrated anti-clogging screen device, the manual adjustment method of the embodiment 2 is suitable for determining the optimal porosity of the screen during working according to field data and working conditions, if the porosity of the screen needs to be continuously adjusted in real time in the working process, mechanical automatic adjustment is needed,
the mechanical automatic porosity adjusting method comprises the following steps:
b1, as shown in fig. 7, connecting an upper screen joint of a screen device with an upper well column outer pipe 8, connecting a lower screen joint with a lower well column outer pipe 9, and then placing the lower screen joint into a working position in a well, arranging a driving rod body 10 with a central through hole in the upper well column outer pipe 8, wherein the lower end face of the driving rod body 10 passes through the through hole of the adjusting nut and is tightly attached to the upper end face of the adjusting ring, a certain number of circular water passing ports 11 are arranged on the outer wall near the lower end face of the driving rod body 10 and are used for an overflowing channel of water circulation, the upper part of the driving rod body 10 is directly communicated to the outside of the well head and is connected with an axial driving device 12 of the well head, and meanwhile, a displacement sensor 13 is arranged on the driving rod body to monitor the axial movement of the driving rod body 10;
step b2, the screen mesh device in the well starts to work, and the circulating water monitoring device 14 monitors the parameters of the porosity of the screen mesh to be adjusted so as to meet the technical requirements;
step b3, starting the axial driving device 12 of the wellhead to drive the driving rod body 10 to push the adjusting ring along the axial direction, changing the radial position of the axial supporting rod which is close to the conical outer wall of the adjusting ring, changing the position of the adjustable skeleton line which is fixedly connected with the axial supporting rod in the gap between the axial skeleton line and the oblique skeleton line, and indirectly changing the porosity of the screen mesh; before the screen device is connected, a functional relation is established between the axial moving distance of the adjusting ring, the radial moving distance of the adjustable skeleton line and the porosity change of the screen device, and a relation function between the moving distance of the driving rod body 10 and the porosity change of the screen device is established on the basis;
b4, transmitting the axial movement distance of the driving rod 10 to the control module 15 through the displacement sensor 13, the control module 15 moving the driving rod 10 in the axial direction at a proper position through the axial driving device 12 of the wellhead according to the functional relation between the movement distance of the driving rod 10 and the porosity of the screen device, and after the movement is completed, stopping the axial driving device 12;
step b5, the porosity of the screen apparatus needs to be adjusted again, and the control module 15 will adjust the porosity of the screen apparatus again according to the set porosity value requirement according to step b3 and step b 4.
Example 4:
the embodiment provides an anti-blocking method of a continuously adjustable integrated anti-blocking screen device, which comprises the following steps:
step one, the content of step b1 is the same as that of step b1 of the mechanical automatic adjustment of embodiment 3;
step two, in the working process, the detected result shows that the screen device needs to be started to obtain the anti-blocking function, at the moment, the control module 15 instructs the axial driving device 12 at the wellhead to output axial motion with certain frequency, the driving rod body 10 transmits the axial motion with certain frequency to the adjusting ring, the adjusting ring transmits the axial supporting rod again, the adjustable skeleton line fixedly connected with the axial supporting rod continuously moves and changes in the radial direction according to the frequency, the radial vibration and dredging effect is formed, and impurities blocked in the gap between the adjustable skeleton line and the axial skeleton line as well as the oblique skeleton line are cleaned;
and step three, after the anti-blocking function is started, the control module 15 is switched to a mechanical adjustment step according to specific requirements, and the porosity of the screen reaches the working requirement at the moment.
Claims (9)
1. A continuously adjustable integrated anti-blocking screen device is characterized by comprising a screen framework (1), and a cylindrical upper screen joint (2) and a cylindrical lower screen joint (3) which are arranged at two ends of the screen framework (1) and are coaxial with each other; the screen framework (1) comprises a plurality of axial framework lines (101), oblique framework lines (102) and adjustable framework lines (103);
the axial skeleton lines (101) are connected between the upper screen joint (2) and the lower screen joint (3) and are parallel to the axes of the upper screen joint and the lower screen joint, and a plurality of axial skeleton lines (101) are uniformly distributed along the circumferential direction to form a cylindrical skeleton coaxial with the upper screen joint (2) and the lower screen joint (3); the oblique framework lines (102) are connected between the upper screen joint (2) and the lower screen joint (3) and are obliquely fixed on the cylindrical framework, a plurality of oblique framework lines (102) are uniformly distributed along the circumferential direction, and an adjustable framework line (103) with the same direction as the oblique framework lines (102) is arranged between every two adjacent oblique framework lines (102); each adjustable framework line (103) is connected with an adjusting assembly, and the adjusting assembly can push the adjustable framework line (103) to move radially to change the gap between the adjustable framework line (103) and the oblique framework lines (102) on the two sides of the adjustable framework line so as to adjust the porosity of the screen framework (1);
the adjusting assembly comprises a radial supporting rod (104) which is connected with an adjustable skeleton line (103) and is positioned in the screen skeleton (1), an axial supporting rod (105) which is vertically connected with the radial supporting rod (104), and an adjusting ring (4) which is positioned at one end of the axial supporting rod (105), coaxially arranged on the inner wall of the upper screen joint (2) and can axially move; the conical outer wall (401) of the adjusting ring (4) is in contact with the axial supporting rod (105), and when the adjusting ring (4) moves axially, the axial supporting rod (105) moves radially under the pushing of the conical outer wall (401); and radial spring assemblies (5) are arranged between the axial support rod (105) and the upper screen joint (2) and the lower screen joint (3) so that the axial support rod (105) can radially reset.
2. The continuously adjustable integrated anti-clogging screen device according to claim 1, wherein the axial skeleton line (101) is a round rod body;
the cross section of the oblique framework line (102) is an isosceles triangle, three vertexes are in arc transition with adjacent sides, and arcs corresponding to vertex angles of the isosceles triangle of the cross section of the oblique framework line (102) always lean against the axial framework line (101);
the section of the adjustable skeleton line (103) is circular and is positioned in a gap between the axial skeleton line (101) and the two oblique skeleton lines (102).
3. The continuously adjustable integrated anti-clogging screen device as claimed in claim 1, wherein the inner wall of the upper screen joint (2) is provided with an adjusting nut (6), the adjusting ring (4) and a first annular bulge I (201) and a second annular bulge I (202) in sequence along the direction close to the screen framework (1); a first annular bulge II (301) and a second annular bulge II (302) are sequentially arranged on the inner wall of the lower screen joint (3) along the direction close to the screen framework (1);
the adjusting nut (6) is of an annular structure, is coaxial with the upper screen joint (2) and is in threaded connection with the inner wall of the upper screen joint (2) so as to adjust the axial position of the adjusting nut;
radial grooves (203) which are uniformly distributed in the axial direction are formed in the first annular bulge I (201), the second annular bulge I (202), the first annular bulge II (301) and the second annular bulge II (302) and correspond to the axial support rods (105) one by one to place the axial support rods (105); the radial spring assemblies (5) are arranged between the first annular bulge I (201) and the second annular bulge I (202) and between the first annular bulge II (301) and the second annular bulge II (302).
4. The continuously adjustable integrated anti-clogging screen device according to claim 3, wherein the adjusting ring (4) is a structure with a central through hole, and the outer wall of the adjusting ring (4) sequentially comprises a cylindrical outer wall (402), a shoulder (403) and a conical outer wall (401) with gradually reduced outer diameter from top to bottom.
5. The continuously adjustable integrated anti-clogging screen device according to claim 4, wherein the axial support rods (105) are provided in plurality and correspond to the adjustable frame lines (103) one by one, the plurality of axial support rods (105) are uniformly distributed in the circumferential direction and enclose a cylindrical frame, and the cylindrical frame is coaxial with and located inside the screen frame (1), the upper screen joint (2) and the lower screen joint (3); one end of the cylindrical frame is leaned on the conical outer wall (401) of the adjusting ring (4);
one end of the axial support rod (105) is of a spherical structure and is positioned in the upper screen joint (2), and the other end of the axial support rod is provided with a cylindrical plug and is positioned in the lower screen joint (3); an upper chuck (1051) and a lower chuck (1052) are arranged on the axial supporting rod (105), the upper chuck (1051) and the lower chuck (1052) are both located between the second annular bulge I (202) and the second annular bulge II (302), the upper chuck (1051) abuts against the second annular bulge I (202), and the lower chuck (1052) abuts against the second annular bulge II (302), so that the axial limiting is carried out on the axial supporting rod (105).
6. The continuously adjustable integrated anti-clogging screen device according to claim 5, wherein the radial spring assembly (5) comprises a first arc-shaped inner plate (501), a first arc-shaped outer plate (502) coaxially sleeved outside the first arc-shaped inner plate (501), a plurality of springs (503) arranged between the first arc-shaped inner plate (501) and the first arc-shaped outer plate (502), a second arc-shaped inner plate (504), a second arc-shaped outer plate (505) coaxially sleeved outside the second arc-shaped inner plate (504), and a plurality of springs (503) arranged between the second arc-shaped inner plate (504) and the second arc-shaped outer plate (505); the first arc-shaped inner plate (501) and the second arc-shaped inner plate (504) are opposite but not in contact with each other and are sleeved outside a cylindrical frame formed by the axial support rods (105), and the first arc-shaped outer plate (502) and the second arc-shaped outer plate (505) are opposite but not in contact with each other and lean against the inner wall of an upper screen joint (2) between the first annular bulge I (201) and the second annular bulge I (202) or the inner wall of a lower screen joint (3) between the first annular bulge II (301) and the second annular bulge II (302).
7. The continuously adjustable integrated anti-clogging screen device according to claim 4, characterized in that a compression spring (7) is arranged between the shoulder (403) of the adjusting ring (4) and the first annular protrusion I (201), the compression spring (7) being coaxial with the upper screen joint (2); under the action of the axial force of the compression spring (7), the adjusting ring (4) abuts against the adjusting nut (6), and the compression spring (7) can be used for axial resetting of the adjusting ring (4).
8. The continuously adjustable integrated anti-clogging screen device as claimed in claim 3, wherein the inner wall of the adjusting nut (6) is provided with four circumferentially and uniformly distributed notches (601) for installing an adjusting tool during manual adjustment.
9. The continuously adjustable integrated anti-clogging screen device according to claim 1, wherein the upper screen joint (2), the lower screen joint (3), the axial skeleton line (101) and the oblique skeleton line (102) are welded together.
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| CN202110825582.7A CN113599885B (en) | 2021-07-21 | 2021-07-21 | Integrated anti-blocking screen device with continuously adjustable |
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| CN202110825582.7A CN113599885B (en) | 2021-07-21 | 2021-07-21 | Integrated anti-blocking screen device with continuously adjustable |
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| CN113599885B true CN113599885B (en) | 2022-06-24 |
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|---|---|---|---|---|
| US10180047B2 (en) * | 2016-12-13 | 2019-01-15 | Michael Brent Ford | Screen filter assembly and method therefor |
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|---|---|---|---|---|
| CN101637761A (en) * | 2009-08-28 | 2010-02-03 | 庞红顺 | Sieve mesh with adjustable sieve pore gaps |
| US9957782B1 (en) * | 2016-12-13 | 2018-05-01 | Michael Brent Ford | Screen filter assembly and method therefor |
| CN108526007A (en) * | 2018-05-25 | 2018-09-14 | 安徽省公路桥梁工程有限公司 | Sieve and certainly tensioning choke-preventing screen |
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