• 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:
    The invention consists of a centrifugal mixer with an upper rotor (3) for projection of particles, which is hard-mounted to rotor (4) allowing centrifuging of fluid (15). The invention lies in the creation of a low-pressure zone within the high-pressure zone of enclosure (23), for introduction of particles (20); this in turn requires the use of disturber (27). The result is a remarkable degree of mixing of the water and cement and has applications for oil field services.
    公开号:SU1662342A3
    申请号:SU874202207
    申请日:1987-03-26
    公开日:1991-07-07
    发明作者:Шервуд Рональд
    申请人:Компани Де Сервис Довель Шлюмберже (Фирма)；
    IPC主号:
    专利说明:

    A weighing device for solid particles is located in the cavity 8 formed by the housing cover 9 and the upper impeller. The loading device is equipped with an adjustable valve 10. The loading device can be made in the form of a cylindrical pipe, installed at an angle to the axis
    the rotor shaft or parallel to it, and also in the form of a cylindrical tube mounted coaxially to the rotor 2. The cylindrical tube is provided with an outlet section in the form of a cone 14 connected to it with a smaller base. The body has ventilation holes 15. 5 e.p. f-ly, 3 ill.
    The invention relates to devices for mixing a powdered material with a liquid, mainly powdered cement and water for cementing petroleum gas squash.
    The purpose of the invention is to increase the efficiency of the device when using fine powder due to its supply to the area of reduced pressure.
    1 shows a schematic of the proposed device; in FIG. 2, it is shown as a mustache, with a loading device in the form of a pipe, coaxial to the rotor; in FIG. 3, a loading device in the form of a pipe disposed at an angle to the axis of the rotor.
    The mixer of liquid and solid particles contains a housing 1 with a high-speed rotor 2 on the shaft 3, consisting of two horizontal impellers 4 and 5 rigidly interconnected, a loading device for solid particles placed above the upper impeller 4, a device 6 for pumping ready mix and a device 7 for fluid supply. The loading device for solid particles is located in the cavity 8 formed by the cover 9 of the housing 1 and the upper impeller 4.
    The boot device is equipped with an adjustable valve 10. It can be made in the form of a cylindrical pipe 11, installed at an angle to the axis of the rotor shaft (fig.Z) or a pipe 12 parallel to it (Fig. 1), as well as a cylindrical pipe 13 installed coaxially the rotor 2 (figure 2). The cylindrical tube is provided with an outlet section in the form of a cone 14 connected to it with a smaller base. Vent holes 15 are provided in the housing.
    The mixer works as follows.
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    The rotor 2 rotates from the engine 16. The lower impeller 5 is designed such that its rotation forms a vortex, which in turn forms a suction zone 17 in the region of the hole 18 located in the center of the head 19. The device 7 for supplying water or any fluid flow , possibly saturated or containing additives, is mounted at this opening. Water is sucked in and the impeller 5 is directed towards the peripheral zone of the rotor and for the most part is distributed throughout the entire peripheral zone 20 of the mixer.
    The upper (spreading) end surface 21 of the impeller 4 is essentially oriented in the transverse radial direction, i.e. perpendicular to shaft 3. This surface is toroidal, concave and directed towards the housing cover 9. Vertical blades (not shown) can be successfully used in this impeller. The centering surface of the impeller is calculated so as to take the powdered material from the loading device and, when rotated, advance it under the action of centrifugal force in the direction of the peripheral zone of the impeller and further into the peripheral zone 20 of the mixer. A pressurized mixture of liquid and powder is pumped out even at device 6, located in the peripheral zone of the mixer.
    The mixer is combined into a mixing system consisting of a tank 22 for the mixture of water used in the preparation, which flows through the device 7 into the lower part of the mixer, the feed hopper 23 with powdered material that is fed into the mixer of the system described below, high pressure pump 24, which takes the mixture supplied from the device 6, for example slag cement, and supplies it to the working section (for example, an oil well for cementing).
    Cavity 8 contains an inner pocket exposed to atmospheric pressure and surrounded by a zone of relatively high pressure. The dimensions and relative positions of these zones depend on the geometry of the mixer (in particular, the shape of the rotor 2) and the height of the cavity 8, as well as the speed of rotation. However, when the mixer has a normal working speed, this pocket is mostly limited to the central part of cavity 8e. The peripheral zone of high pressure starts very close to the center.
    There are the following phenomena in cavity 8: liquid and solid phase are rotated at high speed with a large tangential component determined by the direction of rotation of the rotor. The centrifugal radial flow 25 exists in the immediate vicinity of the upper impeller 4, directly created by rotating the latter, and the radial centripetal flow 26 in the area of the housing cover 9, which is generated by reaction to the centrifugal flow 23. In the direction of the center of the high pressure zone, this flow has a vertically decreasing speed 27,
    which links threads 25 and 26. i
    According to the boot design
    the device is made in the form of a cylindrical pipe installed in the lid 9. The pipe 11 can be installed at an angle to the axis of the shaft with a slope relative to the flow. The nozzle 12 can also be installed parallel to the axis of the shaft perpendicular to the cover. This nozzle is attached to the lid 9 by clamping or welding and communicating with the lower part of the feed hopper, the flow from the hopper is controlled by the valve 10, for example, a butterfly valve or a gate valve.
    Fig. 3 shows the function of the socket 1-1. This pipe creates a local disturbance in the stream. At a certain distance behind the nozzle, the flow is not subjected to any disturbance.
    Inside a restricted perturbed zone, this perturbation can be analyzed as follows.
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    The flow enters said volume according to lines shown parallel to zone 28. Due to the protrusion formed by nozzle 12 and its leading edge 29, the streamlines gradually group together in the direction of zones 30 and 31, since the same flow must pass through a smaller volume, the flow rate increases , reaching a maximum in the area of 31, bordering the leading edge. This flow then diverges, creating a perturbed low pressure zone, directly downstream of the leading edge. It then stabilizes until it completely leaves the disturbed zone. The low pressure zone 32 communicates through the nozzle 12 with the feed hopper 23 or at least with the cross section of the valve 10 and sucks in powder, which is then drawn together with the flow of liquid and material directly into zone 32. This not only improves the mixing, but also contributes to more efficient separation of powder from trapped air. The air leaves the mixer through the hole 15.
    Any air that is not able to come out of the powder during the initial mixing, when the powder enters, is separated during the subsequent mixing in zone 20 and out through channels 33 connecting this zone to cavity 8 through the upper
    impeller 4.
    i
    The valve 10 may be a valve of any type, preferably its implementation in the form of an annular plate 34, mounted flush with the cover 9, forming a part of this cover. This plate contains an opening 35, an annular segment, which is closed by a gate 36, a larger annular segment, moving in the annular track 37.
    It is also possible to install a circulation circuit 38 between the mixture pumping device 7 and the pump 24, thus ensuring that the mixture can return to the beginning of the cycle, either because it has not reached the required density or in order to provide a density measurement in highway 38 return through the meter 39 density.
    During, for example, cementing an oil well or similar
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    The volume of cement delivered by pump 24 is constant and is determined by the speed of the pump. The volumetric rate of removal of the mixed material through the device 6 is either standing or can easily be supported. As a result of the preceding argument and because of the mixer flow pattern, the incoming water flow is a direct, incoming powder flow function that can be easily controlled and adjusted by the valve 10.
    It is possible to regulate the flow of cement, rather than the flow of water, since the supply of cement due to the created effect of suction and gravity is forced at the same time as the supply of water is not such. Thus, the flow of cement takes precedence over the flow of water. All this greatly simplifies on-site operations required for accurate
    control the density of slag cement ..
    "The invention allows to result in
    The valve 11, the water flow is automatically regulated. It is easy to maintain the density of the cement close to optimal throughout the mixture preparation process. The feed hopper 23 may be gravitational or pneumatic.
    In another embodiment of the loading device, there is a coaxial rotor cylindrical tube 13 with an upper conical section 40 opening upward to unload the powder supplied from the hopper 23 through the valve and the outlet section in the form of a cone 14.
    The lower edge of the cone 14 reaches almost the lower part of the cavity 8, as well as the lower edge of the nozzle 12 and its radial distance from the axis of the shaft B1. A liquid and solid particle mixer containing a high-speed rotor housing on a shaft consisting of two rigidly interconnected horizontal impellers, a solid particle loading device placed above the upper impeller, a device for supplying liquid and pumping the finished mixture, characterized in that , in order to increase efficiency in operation when using fine powder by feeding it into the area, it is understood so as to place its internal pressure, the loading device of the peripheral zone s high pressure volume, and not in the pocket.
    The centripetal flow 26 and the vertical falling material flow collide inside the cone 14, creating a zone of negative pressure upstream of the cone edge, which means that the powder is fed directly into the turbulent mixing zone. The air in the mixing process can escape through the opening 15.
    Due to the proposed powder material supply system, the mixing process can be regulated
    55
    The solid particle is located in the cavity formed by the body cap and the upper impeller.
    2. A mixer according to claim 1, characterized in that the loading device is equipped with an adjustable valve.
    3.Mixer according to paragraphs. t and 2, characterized in that the loading device is made in the form of a cylindrical pipe installed at an angle to the axis of the rotor shaft or parallel with it.
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    50

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    in one parameter, for example, the volumetric flow rate of the powder material. Consequently, . It is possible to apply fully automated technical means to the cement mixer.
    The proposed device provides for the production of mixtures of higher quality. The system directly uses the forces and flow rates that exist inside the mixer to suck up (intake) the powdered material, which is introduced directly into the zone of high degree of turbulence, where mixing is most effective. Thus, this material becomes
    able to lose most trapped air.
    By way of example, a negative pressure zone could be at a pressure of 0.6 bar, while the pressure inside the zone below 2.5 bar could be a negative pressure that allows using different powder feed systems, including pneumatic or gravity feed.
    Invention Formula
    1. A liquid and solid particle mixer containing a housing with a high-speed rotor on a shaft consisting of two rigidly interconnected horizontal impellers, a solid particle loading device placed above the upper impeller, a device for supplying liquid and pumping the finished mixture, characterized by that, in order to increase the efficiency in operation when using fine powder by feeding it into the region of reduced pressure, the loading device
    five
    The solid particle is located in the cavity formed by the body cap and the upper impeller.
    2. A mixer according to claim 1, characterized in that the loading device is equipped with an adjustable valve.
    3.Mixer according to paragraphs. t and 2, characterized in that the loading device is made in the form of a cylindrical pipe installed at an angle to the axis of the rotor shaft or parallel with it.
    A. Mixer on PP. 1 and 2, about t - l and h and s. And with the fact that the loading device is made in the form of a cylindrical tube installed coaxially to the rotor.
    5. A mixer according to claim 4, characterized in that
    LTD
    22
    The cube pipe is provided with an outlet section in the form of a cone connected to it with a smaller base.
    I
    6. Mixer on PP. 1-5, which is due to the fact that there are ventilation openings in the housing.
    16Fig .1
    Rig.Z
    32
    权利要求:
    Claims (6)
    [1]
    Claim
    1. A mixer of liquid and solid particles, comprising a housing with a high-speed rotor on a shaft, consisting of two horizontal impellers rigidly interconnected, a loading device for. solid particles placed above the upper impeller, devices for supplying liquid and pumping out the finished mixture, with the aim that, in order to increase, work efficiency when using finely dispersed powder by feeding it to a low pressure, the loading device for solid particles is located in the cavity formed by the housing cover and the upper impeller.
    [2]
    2. The mixer according to claim 1, with the fact that the loading device is equipped with an adjustable valve.
    [3]
    3. The mixer according to paragraphs. 1. and 2, characterized in that the loading device is made in the form of a cylindrical pipe mounted at an angle to the axis of the rotor shaft or in parallel with it.
    [4]
    4. The mixer according to paragraphs. 1 and 2, distinguished by the fact that the loading device is made in the form of a cylindrical pipe mounted coaxially with the rotor.
    [5]
    5. The mixer according to claim 4, characterized in that the cylindrical pipe is provided with an outlet section in the form of a cone connected to it by a smaller base. ,
    [6]
    6. The mixer according to paragraphs. 1-5, characterized in that the housing has ventilation holes.
    Figure 1]
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    同族专利:
    公开号 | 公开日
    JPH0533092B2|1993-05-18|
    FR2596291B1|1990-09-14|
    EP0239148B1|1992-04-22|
    US4834542A|1989-05-30|
    CN87102245A|1987-12-16|
    FR2596291A1|1987-10-02|
    JPS631507A|1988-01-06|
    NO871264D0|1987-03-26|
    BR8701382A|1987-12-22|
    IN169404B|1991-10-12|
    EP0239148A1|1987-09-30|
    NO170261B|1992-06-22|
    NO170261C|1992-09-30|
    CN1011488B|1991-02-06|
    DE3778407D1|1992-05-27|
    CA1295608C|1992-02-11|
    NO871264L|1987-09-28|
    AR244572A1|1993-11-30|
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    US4592658A|1984-09-25|1986-06-03|Claxton Raymond J|Material entrainment and circulation impeller and method for submerging and entraining material in a media|
    US4614435A|1985-03-21|1986-09-30|Dowell Schlumberger Incorporated|Machine for mixing solid particles with a fluid composition|US4989987A|1989-04-18|1991-02-05|Halliburton Company|Slurry mixing apparatus|
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    CA2220972C|1996-11-29|1999-03-09|Canadian Fracmaster Ltd.|Homogenizer/high shear mixing technology for on-the-fly hydration of fracturing fluids and on-the-fly mixing of cement slurries|
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    US6116769A|1998-11-30|2000-09-12|Dewall; Harold O.|Mud mixing machine with lifting coupler|
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    US10173184B2|2015-03-25|2019-01-08|Schlumberger Technology Corporation|Blender for mixing and pumping solids and fluids and method of use thereof|
    CN105251403A|2015-11-06|2016-01-20|四机赛瓦石油钻采设备有限公司|Pressurized mixing device|
    US10087709B2|2016-02-26|2018-10-02|Baker Hughes, A Ge Company, Llc|Well cementing methods and apparatuses|
    CA3032113A1|2018-02-02|2019-08-02|Ag Growth International Inc.|Atomizer mixing chamber for a seed treater|
    CN110713192B|2019-11-28|2020-12-22|常州北化澳联环保科技有限公司|Preparation method of spherical silicon dioxide nanoparticle slurry|
    CN111011902B|2019-12-02|2021-04-30|六安恒佳生物科技有限公司|Grease-added livestock and poultry feed centrifugal preparation system, preparation process and proportion|
    CN111589314A|2020-05-29|2020-08-28|中国石油天然气集团有限公司|Flushing and mixing device capable of preparing high-viscosity fracturing acid liquid|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8604671A|FR2596291B1|1986-03-27|1986-03-27|POWDER MATERIAL AND LIQUID MIXER, ESPECIALLY CEMENT AND WATER, OR LIQUID-LIQUID|
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