WO2014012191A1 - 潜油螺杆泵机组的节能启动装置 - Google Patents

潜油螺杆泵机组的节能启动装置 Download PDF

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Publication number
WO2014012191A1
WO2014012191A1 PCT/CN2012/000978 CN2012000978W WO2014012191A1 WO 2014012191 A1 WO2014012191 A1 WO 2014012191A1 CN 2012000978 W CN2012000978 W CN 2012000978W WO 2014012191 A1 WO2014012191 A1 WO 2014012191A1
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WO
WIPO (PCT)
Prior art keywords
rotor
energy
prime mover
screw
screw pump
Prior art date
Application number
PCT/CN2012/000978
Other languages
English (en)
French (fr)
Inventor
赵锡寰
张瑞琪
Original Assignee
Zhao Xihuan
Zhang Ruiqi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhao Xihuan, Zhang Ruiqi filed Critical Zhao Xihuan
Priority to PCT/CN2012/000978 priority Critical patent/WO2014012191A1/zh
Publication of WO2014012191A1 publication Critical patent/WO2014012191A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/008—Pumps for submersible use, i.e. down-hole pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/17—Tolerance; Play; Gap

Definitions

  • the invention relates to a submersible screw pump unit, and in particular to an energy-saving starting device for a submersible screw pump unit.
  • the operating efficiency of the submersible screw pump unit should be significantly higher than that of a conventional oil extraction equipment such as a rod pump or a submersible centrifugal pump, and the power demand of the prime mover group during the operation of the submersible screw pump unit. It is very small, so it can save a lot of energy; however, because the static resistance torque between the stator and the rotor of the configured screw pump is significantly higher than the running resistance torque, the screw pumping unit is difficult to start, in order to overcome the difficulty of starting the submersible screw pump unit.
  • the prior art generally adopts a prime mover group equipped with a larger capacity.
  • the submersible screw pump unit only needs to be equipped with a small-capacity prime mover group, a prime mover group having a larger capacity is required for normal start-up. Therefore, a large amount of electric energy is wasted, which seriously affects the energy-saving advantages of the electric submersible screw pump unit; hinders the expansion of the application of the submersible screw pump.
  • the present invention provides that the static resistance torque between the screw pumping pump and the rotor can be greatly reduced at the beginning of starting, so that the capacity of the prime mover group of the submersible screw pump unit is reasonably reduced.
  • An energy-saving starting device for a submerged screw pump unit that improves the operating efficiency of the unit and reduces energy consumption.
  • the technical solution adopted by the present invention is - an energy-saving starting device for a submersible screw pump unit, comprising: a prime mover group for setting an outer casing, a screw pumping pump set for providing a casing, and a rotor of the screw pumping pump being output shaft of the prime mover group Driven, an energy-saving starting device is connected in series between the prime mover group and the screw pumping unit, and the energy-saving starting device comprises a casing and a rotor which is freely rotatable along the rotation direction of the prime mover group output shaft and the screw pump rotor.
  • the rotor in the energy-saving starter housing is composed of an active element and a passive element.
  • the active element and the passive element form a helical pair with a fixed stroke.
  • the active element is coupled to an output shaft of the prime mover set, and the passive element is coupled to a rotor of the screw pump.
  • the starting device housing is a hollow cavity body, and the two ends are respectively connected with the outer casing of the prime mover group and the outer casing of the screw pump unit.
  • the length change in the stroke range produced by the spiral element having the fixed stroke formed by the active element and the passive element causes the screw pumping pump to generate an axial displacement between the rotors sufficient to reduce the relationship between the stator and the rotor of the screw pump Static resistance torque present.
  • the invention is connected in series between the prime mover group and the screw pumping pump set.
  • the power supply provided by the submarine cable can control the rotation direction of the output shaft of the prime mover group, so that the output shaft of the prime mover group rotates.
  • the direction conforms to the direction of the spiral rotation of the starter rotor.
  • the output shaft of the prime mover group only drives the active component rotation of the rotor of the starter; since the passive component has been fixed to the screw pump with a large static resistance torque Therefore, only the axial movement of the rotor of the screw pump can be driven, so that the axial displacement between the rotor and the stator of the screw pump is caused.
  • Figure 1 is a schematic longitudinal sectional view of the present invention.
  • FIG. 1 is a schematic diagram of an energy-saving starting device for a submersible screw pump unit, comprising: a prime mover group 10 for setting a submerged screw pump unit of the outer casing 12, and a screw pump unit 30 for setting a submerged screw pump unit of the outer casing 321
  • the rotor 31 of the screw pump is connected to the output shaft 11 of the prime mover group.
  • An energy-saving starting device 20 is connected in series between the prime mover group 10 and the screw pumping unit 30.
  • the energy-saving starting device 20 includes a casing 22 and a rotor 21 that is freely rotatable along the direction of rotation of the prime mover group output shaft 11 and the screw pump rotor 31.
  • the rotor 21 in the energy-saving starter housing is composed of an active element 211 and a passive element 212; the active element 211 and the passive element 212 constitute a spiral pair having a fixed stroke; the active element 211 and the output shaft of the prime mover group 11 connected, the passive component 212 is connected to the rotor 31 of the screw pump; the starting device housing 22 is a hollow cavity body, and the two ends are respectively connected with the outer casing 12 of the prime mover group and the screw pump unit casing 321;
  • the change in length produced by the helical element having a fixed stroke formed by the active element 211 and the passive element 212 causes the screw pumping pump to have a displacement between the rotors sufficient to reduce the static resistance torque generated between the screw pumping stator 32 and the rotor 31.
  • FIG. 1 is a first embodiment of the present invention, in which the active element 211 is a screw or a screw constituting a screw pair, and the passive element 212 is a nut constituting a screw pair.
  • a second embodiment of the invention the active element is a nut and the passive element is a lead screw or a screw.
  • the second embodiment is identical to the working principle of the first embodiment. The following is a description of the first embodiment.
  • the energy-saving starting device 20 of the submersible screw pump unit is connected in series between the prime mover group 10 of the submersible screw pump unit and the screw pumping unit 30, and the control system passes when the prime mover group 10 of the submersible screw pump unit starts.
  • the power supply provided by the submersible cable 13 of the submersible screw pump unit can control the rotation direction of the output shaft 11 of the prime mover group, so that the rotation direction of the output shaft 11 of the prime mover group conforms to the direction in which the screw of the starter rotor 21 is loosened.
  • the direction of rotation of the output shaft 11 of the prime mover group corresponds to the direction of the spiral subspinning tendency of the energy-saving starting device rotor 21, that is, the initial rotation moment of the output shaft of the prime mover group, if the passive component 212 is at the active component 211 and the passive component
  • the upper limit position of the helical pair formed by 212, then the direction of rotation of the prime mover group output shaft 11 will cause the passive element 212 to move downward; the original moment of rotation of the output shaft of the prime mover group, if the passive element 212 is at the active element 211 and passive
  • the lower limit position of the helical pair formed by the element 212, then the direction of rotation of the prime mover set output shaft 11 causes the passive element 212 to move upward.
  • the output shaft of the prime mover group only drives the active component rotation of the rotor of the starting device; since the passive component has been fixed on the rotor of the screw pump with a large static resistance torque, only the screw pair drive
  • the axial movement of the rotor of the screw pump can be driven to cause axial displacement between the rotor and the stator of the screw pump, and as the axial displacement increases, the between the rotor of the screw pump and the stator thereof is gradually reduced.
  • the static resistance so that the prime mover group does not need to drive the screw pump rotor with a very large static resistance torque when starting up; After the end of the stroke, the main and passive components are tightened, and then the screw of the screw pump is started.
  • the prime mover group capacity of the submersible screw pump unit can improve the operating efficiency of the submersible screw pump unit and make full use of its energy saving advantages.
  • the energy-saving starting device of the submersible screw pump unit of the invention is connected between the prime mover group of the submersible screw pump unit and the screw pump; but is not affected by the relative position or installation manner between the prime mover group and the screw pumping unit Restricted, for example: the screw pump can be above the prime mover group or below the prime mover group; the unit can be vertical or horizontal or at any angle; it can be submersible or rod-type,
  • the active component of the rotor of the starting device is connected with the output shaft of the prime mover group, and the passive component is connected with the rotor of the screw pump to achieve the purpose of solving the starting difficulty.
  • the energy-saving starting device of the submersible screw pump unit of the present invention is applicable to other types of single-screw pumping units, such as screw ground pump, which are difficult to start due to large static resistance torque, in addition to the submersible screw pump unit.

Abstract

一种潜油螺杆泵机组的节能启动装置，包括外壳（22）和在外壳（22）内自由旋转的转子（21）组成。转子（21）包括构成螺旋副的主动元件（211）和被动元件（212）。节能启动装置串接于潜油螺杆泵机组的原动机组（10）与螺杆抽油泵机组（30）之间；外壳（22）两端分别与原动机组（10）的外壳（12）和螺杆抽油泵机组（30）的外壳（321）相连接；主动元件（211）与原动机组（10）的输出轴（11）相连接，被动元件（212）与螺杆抽油泵的转子（31）相连接。在泵机组启动初期，该装置使螺杆抽油泵的转子与定子之间产生轴向位移，减小了转子和定子之间的静止阻力矩，因此不需要加大原动机组容量。该装置可提高潜油螺杆泵机组运行效率，使潜油螺杆泵节能优势充分发挥。

Description

潜油螺杆泵机组的节能启动装置 技术领域
本发明涉及潜油螺杆泵机组， 具体的说， 是涉及一种潜油螺杆泵机组 的节能启动装置。
背景技术
在现有技术中， 潜油螺杆泵机组的运行效率应明显高于杆抽螺杆泵或 潜油离心泵等传统石油抽采设备， 潜油螺杆泵机组的运行过程中对原动机 组的功率需求很小， 因此可以节约大量能源； 但是由于配置的螺杆抽油泵 的定、 转子之间的静止阻力矩明显高于运行阻力矩， 致使螺杆抽油泵组启 动困难， 为了克服潜油螺杆泵机组启动困难， 现有技术普遍采用配备较大 容量的原动机组， 这样， 虽然潜油螺杆泵机组运行时只需要配备小容量的 原动机组， 但是为了能够正常启动不得不配备较大容量的原动机组， 从而 浪费大量的电能， 严重的影响了电动潜油螺杆泵机组节能优势的发挥； 阻 碍了潜油螺杆泵应用领域的扩展。
发明内容
针对上述现有技术中的不足， 本发明提供一种在启动之初可大幅度降 低螺杆抽油泵定、 转子之间的静止阻力矩， 使潜油螺杆泵机组的原动机组 容量合理降低， 从而提高机组运行效率， 降低能耗的一种潜油螺杆泵机组 节能启动装置。
本发明所采取的技术方案是- 一种潜油螺杆泵机组的节能启动装置， 包括： 设置外壳的原动机组， 设置外壳的螺杆抽油泵组， 螺杆抽油泵的转子被原动机组的输出轴所驱 动， 原动机组与螺杆抽油泵组之间串接有节能启动装置， 节能启动装置包 括外壳及其内沿原动机组输出轴与螺杆泵转子的旋转方向自由旋转的转 子。
所述节能启动装置外壳内的转子由主动元件和被动元件构成。
所述主动元件和被动元件构成具有固定行程的螺旋副。
所述主动元件与原动机组的输出轴相连接， 被动元件与螺杆抽油泵的 转子相连接。
所述启动装置外壳呈中空腔体， 两端分别与原动机组的外壳和螺杆抽 油泵机组的外壳相连接。
所述主动元件与被动元件构成的具有固定行程的螺旋副所产生的在行 程范围内的长度变化使螺杆抽油泵定、 转子之间产生的轴向位移足以降低 螺杆抽油泵定子和转子之间所存在的静止阻力矩。 本发明相对现有技术的有益效果：
本发明串接于原动机组与螺杆抽油泵组之间， 原动机组开始启动时， 通过潜油电缆所提供的电源可控制原动机组输出轴的旋转方向， 使原动机 组输出轴的旋转方向顺应启动器转子螺旋副旋松趋势的方向， 原动机组启 动初期， 原动机组输出轴只驱动启动装置转子的主动元件旋转； 由于被动 元件己被固定在静止阻力矩很大的螺杆抽油泵的转子上， 因此， 只能带动 螺杆抽油泵的转子发生轴向运动， 使螺杆抽油泵的转子与定子之间发生轴 向位移， 随着轴向位移的增大， 从而逐步降低了螺杆抽油泵的转子与其定 子之间的静止阻力， 原动机组启动时就不必带动静止阻力矩很大的螺杆泵 转子旋转； 待转子螺旋副行程结束一 -主、 被动元件旋紧后， 再启动螺杆 抽油泵转子旋转， 此时螺杆抽油泵的定、 转子之间的静止阻力矩已大为降 低， 这样就不再需要为克服启动困难而加大潜油螺杆泵机组的原动机组容 量， 从而可提高潜油螺杆泵机组运行效率， 使其节能优势充分发挥。
附图说明
图 1是本发明纵剖结构示意图。
附图中主要部件符号说明- 图中：
10、 潜油螺杆泵机组的原动机组
11、 原动机组的输出轴
12、 原动机组的外壳
13、 潜油螺杆泵机组的潜油电缆
20、 节能启动装置
21、 启动装置的转子
211、 转子的主动元件
212、 转子的被动元件
22、 启动装置的外壳
30、 潜油螺杆泵机组的螺杆抽油泵组
31、 螺杆抽油泵的转子
32、 螺杆抽油泵的定子
321、 螺杆抽油泵外壳。
具体实施方式
以下参照附图及实施例对本发明进行详细的说明：
附图 1 可知， 一种潜油螺杆泵机组的节能启动装置， 包括： 设置外壳 12 的潜油螺杆泵机组的原动机组 10, 设置外壳 321 的潜油螺杆泵机组的 螺杆抽油泵组 30， 螺杆抽油泵的转子 31与原动机组的输出轴 11相连接， 原动机组 10与螺杆抽油泵组 30之间串接有节能启动装置 20， 节能启动装 置 20包括外壳 22及其内沿原动机组输出轴 11与螺杆泵转子 31的旋转方 向自由旋转的转子 21 ; 所述节能启动装置外壳内的转子 21 由主动元件 211和被动元件 212构成； 所述主动元件 211和被动元件 212构成具有固 定行程的螺旋副； 所述主动元件 211 与原动机组的输出轴 11 相连接， 被 动元件 212与螺杆抽油泵的转子 31相连接； 所述启动装置外壳 22呈中空 腔体， 两端分别与原动机组的外壳 12 和螺杆抽油泵机组外壳 321 相连 接； 所述主动元件 211与被动元件 212构成的具有固定行程的螺旋副所产 生的长度变化使螺杆抽油泵定、 转子之间产生的位移足以降低螺杆抽油泵 定子 32和转子 31之间所产生的静止阻力矩。
图 1是本发明的第一实施例， 主动元件 211 为构成螺旋副的丝杠或螺 杆， 被动元件 212 为构成螺旋副的螺母。 本发明的第二实施例： 主动元件 为螺母， 被动元件为丝杠或螺杆。 第二实施例与第一实施例的工作原理相 同， 以下围绕第一实施例展开说明， 当丝杠或螺杆作为主动元件与原动机 组的输出轴 11 相连接， 被动元件螺旋副的螺母将沿着丝杠或螺杆轴线上 下移动， 使螺旋副的轴向长度在固定行程范围内发生变化； 同理， 当螺旋 副的螺母作为主动元件与原动机组的输出轴 11 相连接， 螺母沿轴线位置 相对固定， 丝杠或螺杆沿轴线上下移动。
潜油螺杆泵机组的节能启动装置 20 串接于潜油螺杆泵机组的原动机 组 10与螺杆抽油泵组 30之间， 潜油螺杆泵机组的原动机组 10幵始启动 时， 控制系统通过潜油螺杆泵机组的潜油电缆 13 所提供的电源可控制原 动机组输出轴 11的旋转方向， 使原动机组输出轴 11的旋转方向顺应启动 器转子 21螺旋副旋松趋势的方向。 所谓原动机组输出轴 11 的旋转方向顺 应节能启动装置转子 21 构成的螺旋副旋松趋势的方向， 即： 原动机组输 出轴的转动初始时刻， 如果被动元件 212 处在主动元件 211 和被动元件 212构成的螺旋副的上方极限位置， 那么原动机组输出轴 11的旋转方向将 使得被动元件 212 向下方移动； 原动机组输出轴的转动初始时刻， 如果被 动元件 212处在主动元件 211和被动元件 212构成的螺旋副的下方极限位 置， 那么原动机组输出轴 11的旋转方向使得被动元件 212向上方移动。
原动机组启动初期， 原动机组输出轴只驱动启动装置转子的主动元件 旋转； 由于被动元件已被固定在静止阻力矩很大的螺杆抽油泵的转子上， 因此， 在螺旋副的驱动下只能带动螺杆抽油泵的转子发生轴向运动， 使螺 杆抽油泵的转子与定子之间发生轴向位移， 随着轴向位移的增大， 从而逐 步降低了螺杆抽油泵的转子与其定子之间的静止阻力， 这样， 原动机组启 动时就不必带动静止阻力矩非常大的螺杆泵转子旋转； 待启动装置螺旋副 行程结束一主、 被动元件旋紧后， 再启动螺杆抽油泵转子旋转， 此时螺 杆抽油泵的定、 转子之间已基本不存在静止阻力矩， 这样就不再需要为克 服启动困难而加大潜油螺杆泵机组的原动机组容量， 从而可提高潜油螺杆 泵机组运行效率， 使其节能优势充分发挥。
本发明潜油螺杆泵机组的节能启动装置是串接于潜油螺杆泵机组的原 动机组与螺杆抽油泵之间； 但不受原动机组与螺杆抽油泵组之间的相对位 置或安装方式所限制， 例如： 螺杆抽油泵可以在原动机组上方， 也可以在 原动机组的下方； 机组可以是垂直装置也可以是水平或任意角度装置的； 可以是潜没式也可以是杆抽式的， 本启动装置转子的主动元件与原动机组 输出轴相连接， 被动元件与螺杆抽油泵的转子相连接， 都可以达到解决启 动困难的目的。
本发明潜油螺杆泵机组的节能启动装置除适用于潜油螺杆泵机组之 外， 也同样适用于因静止阻力矩大而启动困难的其他类型单螺杆抽油泵机 组， 例如螺杆地面输送泵等。
以上所述， 仅是本发明的较佳实施例而己， 并非对本发明作任何形式 上的限制， 虽然本发明已以较佳实施例公开如上， 然而， 并非用以限定本 发明，任何熟悉本专业的技术人员， 在不脱离本发明技术方案范围内，当然 会利用揭示的技术内容作出些许更动或修饰， 成为等同变化的等效实施例, 但凡是未脱离本发明技术方案的内容， 依据本发明的技术实质对以上实施 例所作的任何简单修改、 等同变化与修饰， 均属于本发明技术方案的范围 内。

Claims

1、 一种潜油螺杆泵机组的节能启动装置， 包括： 设置外壳的原动机 组， 设置外壳的螺杆抽油泵组， 螺杆抽油泵的转子被原动机组的输出轴所 驱动， 其特征在于： 原动机组与螺杆抽油泵组之间串接有节能启动装置， 节能启动装置包括外壳及其内沿原动机组输出轴与螺杆泵转子的旋转方向 自由旋转的转子。
2、 根据权利要求 1 所述潜油螺杆泵机组的节能启动装置， 其特征在 于： 所述节能启动装置外壳内的转子由主动元件和被动元件构成。
3、 根据权利要求 2 所述潜油螺杆泵机组的节能启动装置， 其特征在 于： 所述主动元件和被动元件构成具有固定行程的螺旋副。
4、 根据权利要求 2 所述潜油螺杆泵机组的节能启动装置， 其特征在 于： 所述主动元件与原动机组的输出轴相连接， 被动元件与螺杆抽油泵的 转子相连接。
5、 根据权利要求 1 所述潜油螺杆泵机组的节能启动装置， 其特征在 于： 所述启动装置外壳呈中空腔体， 两端分别与原动机组的外壳和螺杆抽 油泵机组的外壳相连接。
6、 根据权利要求 2 所述潜油螺杆泵机组的节能启动装置， 其特征在 于： 所述主动元件与被动元件构成的具有固定行程的螺旋副所产生的在行 程范围内的长度变化使螺杆抽油泵定、 转子之间产生的轴向位移足以降低 螺杆抽油泵定子和转子之间所存在的静止阻力矩。
PCT/CN2012/000978 2012-07-20 2012-07-20 潜油螺杆泵机组的节能启动装置 WO2014012191A1 (zh)

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Publication number Priority date Publication date Assignee Title
US2267459A (en) * 1939-01-09 1941-12-23 Fmc Corp Deep well pump
US5015162A (en) * 1989-11-28 1991-05-14 Heppner Terry D Attachment for an oil well screw pump system
CN2432358Y (zh) * 2000-06-28 2001-05-30 孙平 聚合物注入螺杆泵
CN2436694Y (zh) * 2000-06-23 2001-06-27 崔乃林 可投捞式电动潜油螺杆泵
CN102734155A (zh) * 2012-07-20 2012-10-17 赵锡寰 潜油螺杆泵机组的节能启动装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267459A (en) * 1939-01-09 1941-12-23 Fmc Corp Deep well pump
US5015162A (en) * 1989-11-28 1991-05-14 Heppner Terry D Attachment for an oil well screw pump system
CN2436694Y (zh) * 2000-06-23 2001-06-27 崔乃林 可投捞式电动潜油螺杆泵
CN2432358Y (zh) * 2000-06-28 2001-05-30 孙平 聚合物注入螺杆泵
CN102734155A (zh) * 2012-07-20 2012-10-17 赵锡寰 潜油螺杆泵机组的节能启动装置

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