• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A double cylinder screen comprises an inner reinforcing cylinder (1) which performs a pressure-­resisting function against an external pressure and an outer screen cylinder (2) which performs a screen function. The inner reinforcing screen comprises inner rods (3) disposed cylindrically at a predetermined interval in the axial direction of the screen and a spiral reinforcing member (4) wound on the outside of the inner rods and welded to the inner rods. The outer screen cylinder comprises screen rods (5) disposed at a predetermined interval in the axial direction on the outer periphery of the inner reinforcing member and a wire (6) wound spirally about the outside of the screen rods and welded to the screen rods. The width of a slit of the reinforcing member is larger than the width of a slit of the wire. The double screen cylinder is improved in its strength and can be manufactured without requiring a costly jig.
    公开号:SU1729299A3
    申请号:SU864028801
    申请日:1986-12-26
    公开日:1992-04-23
    发明作者:Нагаока Тадаеси
    申请人:Нагаока Канаами Кабусики Кайся (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the mining industry and can be used in wells, such as oil wells, water wells, wells for natural gas, wells for using geothermal electricity, and so on, in particular, as a filter in deep wells that is subjected to extremely high pressure, stress, compression and torsional forces.
    The aim of the invention is to simplify the design and reduce manufacturing costs.
    Figure 1 shows a double filter, about-. general view; figure 2 - the same, end view; FIG. 3 shows a filter with a distant part, a type of side tilt; 4 and 5, the process
    making a double filter; Figure 6 shows the position in which the reinforced filter element Yu is held horizontally; 7 and 8 are instruments using a backwash; figure 9 - filter triple sQ cylinder; in fig. 10 - the process will produce a Q-VA filter of a ring design; FIG. 11 shows a clamp used for the production process of a filter with a ring ring / J structure; in fig. 12 shows the positions in which the reinforced filter element of the ring structure is held horizontally.
    The double filter (Figures 1 and 2) consists of an internal reinforced cylinder 1, which performs the function of countering external pressure, and an external cylinder 2, which performs the function of a shield. The internal reinforced cylinder consists of internal rods 3, arranged around the circumference of the cylinder the gaps between them in the axial direction of the shield A and the spiral reinforced element 4, having an oblong section, where the length along the radius is greater than the length along the axis, and wound outside the inner rods 3 with a predetermined pitch. The reinforced element 4 and the inner rods 3 are welded together at the places where they come into contact with each other. The inner surface of each of the inner rods 3 (FIG. 2) is substantially recessed into the inner surface of the circle 46 of the reinforced element 4. The reinforced element 4 is welded to the inner rods m 3 at all contact points between them.
    The outer cylinder 2 consists of shield rods 5, located in the axial direction of the outer circumference of the inner reinforced cylinder 1 at predetermined intervals, and the wire with a wedge-shaped profile 6 is wound in a spiral with a specified pitch on the outer surface of these shield rods 5. The wire with the wedge-shaped profile 6 is welded into integrally with the rods of the shield 5 at the places where they come into contact with each other. The wire with a wedge-shaped profile 6 is welded to the terminals of the shield 5 at all contact points between them. The slot width of the reinforced element 4 of the inner reinforced cylinder 1 is wider than the slot b of the outer cylinder of the shield 2.
    Dual filter has common parts 7 and
    8 on both ends (fig.Z). A plurality of shields A, connected in series, are used to drill a well of the required depth.
    Rotary type welding machine
    9 is a known structure consisting of an outer electrode 10 in the form of a disk and an inner tubular welding electrode 11, the electrode 10 is located on the end portion of the inner electrode 11. First, the inner rods 3 of a certain number are set around the circumference of the cylinder at specified intervals between them The electrode 11 and one end of the inner rods 3 (the part of the end to the right is shown in Fig. 4) is held by a cartridge holder (not shown). A rotating type cartridge holder is installed in the axial direction of the filter A.
    In the next step, the end portion of the reinforced element 4, made of a flat bar, is inserted between the outer electrode 10 and the inner rods 3. When the welding machine 9 is turned on, the end portion of the reinforced member 4 is welded to the inner rods m 3 where they contact each other. with a friend.
    Then the cartridge holder and the internal welding electrode 11 rotate synchronously in a counterclockwise direction, while the cartridge holder is shifted to the right by a predetermined pitch for
    0 of each rotation of the electrode 11. The inner rods 3 are therefore displaced to the right, and the reinforced element 4 is wound from the drum and spirally wound around the inner rods 3 arranged along
    5 to the cylinder on the inner welding electrode 11. As the helix of the reinforced element 4 forms, the contact points between the reinforced element 4 and the inner rods 3 are boiled one by one by the welding machine 9. The outer welding electrode 10 rotates in a counterclockwise direction. After manufacturing the inner reinforced cylinder
    The cartridge holder moves to the beginning of the end position of the inner welding electrode 1. Then the plurality of rods of the shield 5 is set at predetermined intervals on the outer circumference of the inner reinforced cylinder 1, and the right end portion of the inner reinforced cylinder 1 and the right end portion of the rods of the shield 5 are retained by the cartridge the holder. Then the end part of the wire with a wedge-shaped profile 6, wound
    5, in the form of a drum, protrudes between the external welding electrode 10 and the shields of the shield 5 and the end of the wire 6 is welded to the shanks of the shield 5 at the places where they come into contact with each other. Then, in a logical way (FIG. 4), the cartridge holder and the internal welding electrode
    The II rotates synchronously in a counterclockwise direction while the cartridge holder moves to the right. it
    5 causes the inner reinforced cylinder 1 and the shields of the shield 5 to move to the right, disconnect from the inner welding electrode 11, and the wire of the wedge-shaped profile 6 enters from the drum and is wound in a spiral on the shafts of the shield 5. As the helix of the wire of the wedge-shaped profile is formed, it and the rods of the shield 6 are welded with each other in the places where they are in contact with each other. Subsequently, the outer cylinder of the shield 2 is formed on the outer circumference of the inner reinforced cylinder 1. The outer cylinder 2 is pressed against the inner reinforced cylinder 1 by compressive forces that occur during the winding of the wire
    the wedge-shaped profile 6 and acting on the outer cylinder 2, moreover, the outer cylinder 2, which is subjected to welding operations, is pressed with the inner strengthened cylinder in the expanded state due to the heat from welding, and therefore is pressed in with the inner strengthened cylinder 1 as a result of cooling, after which eliminates the need to weld the outer cylinder of the shield to the internal reinforced cylinder.
    After the outer cylinder 2 has been formed on the outer circumference of the inner reinforced cylinder 1, the entire cylinder assembly is disconnected from the cartridge holder, and the joints 7 and 8 are boiled by welding at both ends of the cylinder assembly (Fig. 3, where the shield of the double cylinder A is shown at the completion stage manufacturing).
    Double filter works as follows.
    In the case that filter A is used to collect oil, water or other liquid, this liquid penetrates into the cylinder from slot b in the wire mesh 6 of the outer cylinder 2 through the slot of the reinforced element 4 of the inner reinforced cylinder 1 and is collected from the outside. 4 more slots in the wire mesh 6, the liquid penetrates into the filter A with less resistance. When the opening rate of the hole decreases as a result of clogging with sand or other materials, the filter A can be back flushed, i.e. a flow of fluid directed in the opposite direction from the inside to the outside of the filter A. Back-flushing can be carried out just as effectively, since the slot a is larger than the slot b.
    Since reinforced element 4 is welded together with internal rods 3, reinforced element 3 can maintain its horizontal position even with a strong external pressure (Fig. 6), therefore filter A can withstand large external pressure. The distance between the inner surface of the circumference of the inner rods 3 and the outer surface of the circumference of the wire mesh (T, Fig 2) imparts resistance to external pressure, which is equivalent to the transfer of resistance by the thickness of a steel pipe used for construction purposes. In addition, filter A is very resistant to twisting forces.
    Backwashing of the filter A is usually carried out by using the known backwash device shown in Fig.7 or 8. The backwash device 12 (Fig.7) is made by putting a rubber washing tip 14 onto the tube 13. For
    backwash water is ejected from the flushing hole 15 of the pipe 13 during its lifting.
    The backflow jet device 16 (Fig. 8) is manufactured by mounting on
    0 the pipe 17 of the guide elements 18 with the blades 19, the reverse jet is formed by the ejection of water from the nozzles 20 of the pipe 17. Whatever device is used, the internal rods 3 of the filter A shield act as
    5 guides for water tips 14 or vanes 19 in order to ensure normal installation and removal of device 12 or 16 for back flow.
    0 Shield 5 can be of any section (oblong, elliptical, and in the shape of a letter;}.
    Preferably, the wire of the wedge-shaped profile is used as the wire 6.
    Reinforced element 4 has an elongated cross section, where. radius length is longer than the axis. The profile of the reinforced element 4 is not limited to this form only;
    0 also use other cross section profiles. nor, such as in the form of a letter, in the form of a wedge and ellipse. Preferably, the reinforced element 4 was longer along the radius than the axial length, however, the profile
    The 5 sections of the reinforced element 4 is not limited to this form only. For example, a square profile may be used. Triangle profile rods are used as internal rods 3; other profiles, such as a round profile, can also be used. The inner side of the inner rods 3 is recessed into the inner surface of the circumference of the reinforced element 4. This is particularly convenient
    5 for normal installation and removal of a reverse jet device. However, the inner rods 3 can be welded to the reinforced element 4 with their inner sides directed inwardly to the inner circumferential surface .4 b of the reinforced element 4.
    The reinforced element 4 and the inner rods 3 of the inner reinforced cylinder 1 are welded to each other in all places,
    5 where they are in contact with each other, the wedge-shaped wire 6 and the shields of the shield 5 of the outer cylinder of the shield 2 are welded to each other in all places where they are in contact with each other. This design is particularly preferred because
    the inner reinforced cylinder 1 and the outer cylinder of the shield 2 are respectively transformed into very rigid structures. Depending on the conditions of use of the shield, these elements may not be welded in all the places in which they come into contact with each other, but, for example, through one. The outer cylinder of the shield 2 is pressed in with the inner reinforced cylinder 1 in the manufacturing process, so there is no need to weld cylinders 1 and 2 to each other. However, depending on the operating conditions of the shield, cylinders 1 and 2 can be welded to each other.
    The double filter manufacturing method can be used to produce a multi-shield filter, such as a three cylinder filter. The primary internal reinforced cylinder (Fig. 9), consisting of internal rods 3 and reinforced element 4, is manufactured first, and then secondary external reinforced cylinder 1 is manufactured in a similar way on the outer circumference of the primary internal strengthened cylinder 1. In Ultimately, the outer cylinder 2, consisting of the shields of the shield 5 and the wire of the wedge-shaped profile 6, is formed on the outer circumference of the secondary inner reinforced cylinder 1, on the basis of which a cylinder with three shields can be manufactured e shield double cylinder. With regard to materials for the manufacture of shield elements, any suitable material can be used here.
    Rials, including metal, plastics and fiberglass of choice.
    权利要求:
    Claims (1)
    [1]
    Formula of the Invention A double filter comprising an inner reinforced cylinder consisting of inner rods circumferentially spaced apart from each other in the axial direction of the filter and a spiral reinforcing element whose coils are wound with a gap relative to each other on the outer side of the inner rods, welded in one piece with the inner rods, and an outer cylinder mounted on the outside of the inner reinforced cylinder and containing rods located circumferentially apart from an ax in the axial direction on the outer periphery of the inner reinforced cylinder and the wire spirally wound with a gap relative to each other around the outer side of the rods, while the wire is welded integrally to the rods, and the gap width of the spiral reinforcing element is greater than the width of the gap between the wire of the outer cylinder, characterized in that, in order to simplify the design and reduce manufacturing costs, the rods of the outer cylinder are made of shield, radially located outer circumference STI internal power cylinder with pressure contact to the helical reinforcement element, the latter has a cross-sectional radius of length greater than the length along the axis.
    N
    about -
    & & I 0 About
    /
    FIG. 12
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    IN168440B|1991-04-06|
    JPS62156493A|1987-07-11|
    JPH0154516B2|1989-11-20|
    DE3684685D1|1992-05-07|
    AU6698886A|1987-07-02|
    CA1271415A|1990-07-10|
    KR870006288A|1987-07-10|
    CN86108799A|1987-08-05|
    CN1006820B|1990-02-14|
    EP0228262B1|1992-04-01|
    AU597018B2|1990-05-24|
    EP0228262A2|1987-07-08|
    EP0228262A3|1988-09-21|
    US4818403A|1989-04-04|
    KR930001720B1|1993-03-12|
    BR8606390A|1987-10-13|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP60293916A|JPH0154516B2|1985-12-27|1985-12-27|
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