WO2019184010A1 - 一种半球形卷吸式大流量自吸离心泵 - Google Patents
一种半球形卷吸式大流量自吸离心泵 Download PDFInfo
- Publication number
- WO2019184010A1 WO2019184010A1 PCT/CN2018/082953 CN2018082953W WO2019184010A1 WO 2019184010 A1 WO2019184010 A1 WO 2019184010A1 CN 2018082953 W CN2018082953 W CN 2018082953W WO 2019184010 A1 WO2019184010 A1 WO 2019184010A1
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- Prior art keywords
- entrainment
- section
- pipe
- spherical
- slip
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type
- F04D9/065—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type the driving fluid being a gas or vapour, e.g. exhaust of a combustion engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/044—Means for rendering the priming pump inoperative
Definitions
- the present invention provides a hemispherical entrainment type large-flow self-priming centrifugal pump.
- the large-flow self-priming centrifugal pump sucks the gas in the pump chamber while entraining the inlet pipe.
- the gas allows the air in the large-flow self-priming centrifugal pump to be quickly discharged, and the self-priming process is completed efficiently and quickly.
- the top end and the bottom end of the slip-stop core are respectively limited by an upper limit spring and a lower limit spring, wherein the slip-stop core is provided with a plurality of primary coilers and a secondary coiler, the first stage
- the take-up pipe and the second-stage take-up pipe are in one-to-one correspondence, and are evenly distributed circumferentially around the axis of the slip-stop core, and both ends of the first-stage take-up pipe are located on the side of the slip-stop core, in an initial state,
- the top outlet of the primary coiler is facing the primary separator, the bottom inlet is facing the secondary suction chamber, the top port of the secondary coil is connected to the primary coiler, and the bottom port is located in the slippery The bottom surface of the core;
- the sliding stop core is provided with a plurality of drainage nozzles, the drainage nozzles are evenly distributed around the central axis of the outlet section of the first-order circular table, and the drainage nozzle is led out from the outlet section of the first-order circular table to the exit section of the second-order circular table.
- a constricted jet nozzle at the outlet of the drainage nozzle is a constricted jet nozzle, so that at the end of self-priming, the high-speed gas-liquid two-phase jet generated by the drainage nozzle causes a radial uniform impact on the gas-liquid two-phase flow discharged from the outlet section of the second-order circular table.
- the liquid phase is coagulated and collected in the three-stage suction chamber to avoid clogging of the entrainment line.
- the primary coiling pipe is a tilting contracting section and a first bending section from the bottom port to the top port
- the secondary coiling pipe sequentially tilts the contraction section and the vertical contraction section from the bottom port to the top port, the secondary stage
- the top port of the take-up tube is in communication with the inclined contraction section of the primary take-up tube.
- the top end of the sliding stop core is provided with an upper positioning groove
- the bottom end of the upper limit spring is installed in the upper positioning groove
- the top end of the upper limit spring is connected with the positioning ball
- the positioning ball is installed through the limit bracket.
- the bottom end of the sliding stop core is provided with a positioning groove
- the top end of the lower limit spring is fixed in the positioning groove
- the bottom end is fixed under the inner surface of the elliptical cross-section pipe In the slot.
- the space limit of the sliding stop core is realized by the upper limit spring and the lower limit spring, and the opening degree adjustment of the suction pipe is completed.
- the water stored in the three-stage entrainment chamber that collides due to collision during the self-priming process can be returned to the first-stage entrainment chamber by the take-up line, and further returned to the pump chamber, thereby reducing the system.
- the accumulation of water avoids corrosion of the structure and affects the next self-priming start.
- the invention adopts a sliding valve with an elliptical cylindrical structure, so that no twist is generated in the elliptical cross-section pipeline, so that the inner pipe inlet and the pump cavity winding hole cannot be docked; and the slip valve can be based on the gas storage cavity and
- the pressure difference between the first-stage suction chambers adjusts the rising height of the sliding valve in the elliptical pipeline, thereby adjusting the opening degree of the pumping cavity, and realizing the opening adjustment of the pumping cavity in the self-priming process. , improved the suction performance.
- Figure 3 is a partial enlarged view of B in Figure 2.
- Figure 6 is a schematic view showing the structure of the slip valve of the present invention.
- the sliding valve 26 and the bottom end surface of the elliptical cross-section pipe 19 constitute an air storage chamber 27, the gas storage chamber 27 is ellipsoidal, and the bottom end surface of the elliptical cross-section pipe 19 is provided with a vent hole 28, and the vent hole 28 is connected.
- the gas storage chamber 27 is in the atmosphere.
- the pressure in the third-stage entrainment chamber 11 is lowered, which is lower than the gas pressure of the first-stage entrainment chamber 29, so that the slip-stop core 23 slides upward, and the upper limit is reached.
- the position spring 22 is in a compressed state, and the lower limit spring 17 is in a stretched state.
- the first-stage crimping pipe 34 is connected to the contraction section, and the gas is accelerated by the contraction section of the primary coiler 34, and the pressure is lowered, thereby achieving secondary entrainment of the gas in the secondary coiler 35, enhancing the entrainment of the hemispherical entrainment system. ability.
- the slip-stop core 23 gradually falls under the action of its own gravity and the upper limit spring 22 and the lower limit spring 17, when the bottom end of the second-order circular table exit section 32 is lower than the upper surface of the primary separation plate 12
- the liquid accumulated in the three-stage entrainment chamber 11 during the self-priming process is returned to the first-stage entrainment chamber 29 through the second-order circular table outlet section 32, the first-order circular table outlet section 33, and the secondary-stage suction pipe 35. Since the inlet of the primary coiler 34 is located below the lower surface of the secondary separator 16, the liquid in the tertiary cylinder 11 is returned to the primary coiling chamber 29 via the primary coiler 34.
Abstract
Description
Claims (10)
- 一种半球形卷吸式大流量自吸离心泵,其特征在于,包括半球形卷吸系统(1)、泵体(2)和泵进口管(3),所述半球形卷吸系统(1)设置于泵体(2)的上方,半球形卷吸系统(1)包括椭圆截面管路(19)、壳体(39)、一级分离板(12)、二级分离板(16)、球面卷吸上盖板(8)、球面卷吸下盖板(10)和滑移止通芯(23),所述椭圆截面管路(19)向上倾斜一定的角度,椭圆截面管路(19)的顶端与壳体(39)的底端连接,所述壳体(39)竖直设置,所述二级分离板(16)设置于壳体(39)内,二级分离板(16)的四周与壳体(39)的内壁连接,所述一级分离板(12)设置于壳体(39)的顶端,所述一级分离板(12)和二级分离板(16)的中心均设有通孔,所述滑移止通芯(23)与一级分离板(12)和二级分离板(16)中心的通孔滑动副连接,所述一级分离板(12)和二级分离板(16)以及壳体(39)之间构成二级卷吸腔(13),所述二级分离板(16)与椭圆截面管路(19)之间构成一级卷吸腔(12),所述二级卷吸腔(13)与泵进口管(3)连通;所述球面卷吸上盖板(8)和球面卷吸下盖板(10)的底端均与一级分离板(12)连接,所述球面卷吸上盖板(8)与球面卷吸下盖板(10)相互扣合形成球面卷吸内腔(21),所述球面卷吸内腔(21)的横截面为双圆形,所述球面卷吸内腔(21)为螺旋重叠上升的包裹半球形的双圆形管路,双圆形管路底端进口与进气口(20)连接,顶端出口与排气口(5)连接,所述球面卷吸下盖板(10)与一级分离板(12)之间构成三级卷吸腔(11),所述球面卷吸下盖板(10)上均匀分布有球面卷吸通孔(9),所述球面卷吸通孔(9)连通三级卷吸腔(11)和球面卷吸内腔(21);所述滑移止通芯(23)的顶端和底端分别通过上限位弹簧(22)和下限位弹簧(17)限位,所述滑移止通芯(23)内设有多个一级卷吸管(34)和二级卷吸管(35),所述一级卷吸管(34)和二级卷吸管(35)一一对应连通,且均绕滑移止通芯(23)的轴线周向均匀分布,初始状态时,所述一级卷吸管(34)的顶端出口正对一级分离板(12),底端进口正对二级卷吸腔(13),所述二级卷吸管(35)的顶端口与一级卷吸管(34)连通,底端口位于滑移止通芯(23)的底面上;所述椭圆截面管路(19)内设有滑移阀(26),所述滑移阀(26)为椭圆柱结构,滑移阀(26)中开设有内管路,内管路出口(37)的方向与椭圆截面管路中轴线平行,内管路进口(38)的方向垂直于椭圆截面管路(19)的中轴线,所述滑移阀(26)与椭圆截面管路(19)的内壁构成滑动副连接,所述椭圆截面管路(19)上设有泵腔卷吸孔(25), 滑移阀(26)上下滑移过程中,内管路进口(38)与泵腔卷吸孔(25)连通或错位,所述椭圆截面管路(19)的内壁上设有止推阀(24),所述止推阀(24)位于滑移阀(26)的上方,限制滑移阀(26)向上滑动的位置,所述滑移阀(26)与椭圆截面管路(19)底端面构成储气腔(27),所述椭圆截面管路(19)底端面上设有通气孔(28),所述通气孔(28)连通储气腔(27)与大气。
- 根据权利要求1所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述滑移止通芯(23)上位于一级卷吸管(34)的顶端出口处,依次设有二阶圆台出口段(32)和一阶圆台出口段(33),所述二阶圆台出口段(32)、一阶圆台出口段(33)同中心轴,且二阶圆台出口段(32)直径大于一阶圆台出口段(33),初始状态时,所述二阶圆台出口段(32)正对一级分离板(12),。
- 根据权利要求2所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述滑移止通芯(23)内设有多个引流喷嘴(31),所述引流喷嘴(31)绕一阶圆台出口段(33)中心轴沿圆周均匀分布,引流喷嘴(31)由一阶圆台出口段(33)引出至二阶圆台出口段(32),且在引流喷嘴(31)出口处为收缩形射流喷嘴。
- 根据权利要求1所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述一级卷吸管(34)从底端口至顶端口依次为倾斜收缩段以及一次弯转段,二级卷吸管(35)从底端口至顶端口依次倾斜收缩段和竖直收缩段,所述二级卷吸管(35)的顶端口与一级卷吸管(34)的倾斜收缩段连通。
- 根据权利要求1所述的半球形卷吸式大流量自吸离心泵,其特征在于,滑移止通芯(23)顶端设有上定位槽(30),所述上限位弹簧(22)的底端安装于上定位槽(30)内,上限位弹簧(22)的顶端与定位球(6)连接,所述定位球(6)通过限位支架(7)安装在滑移止通芯(23)顶端上方;所述滑移止通芯(23)的底端开设有定位凹槽(36),所述下限位弹簧(17)顶端固定在定位凹槽(36)内,底端固定在椭圆截面管路(19)内表面的下定位槽(18)中。
- 根据权利要求5所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述上限位弹簧(22)与下限位弹簧(17)弹性模量比为1:2。
- 根据权利要求1所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述止推阀(24)的截面为直角三角形,沿椭圆截面管路(19)的轴向,所述止推阀(24)的顶端面与滑移阀(26)内管路出口(37)的底端面平齐。
- 根据权利要求5所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述止推阀(24)在椭圆截面管路(19)内表面扫过120°的椭圆环体。
- 根据权利要求1所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述储气腔(27)为半椭球形。
- 根据权利要求1所述的半球形卷吸式大流量自吸离心泵,其特征在于,所述一级分离板(12)的上表面为倾斜向下的斜平面,下表面为倾斜向下的弧面。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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GB2011543.2A GB2585279C (en) | 2018-03-26 | 2018-04-13 | Hemispherical entrainment-type high-flow self-priming centrifugal pump |
AU2018415410A AU2018415410B2 (en) | 2018-03-26 | 2018-04-13 | Semi-spherical entrainment type high flow self-priming centrifugal pump |
US16/966,007 US11078914B2 (en) | 2018-03-26 | 2018-04-13 | Hemispherical entrainment-type high-flow self-priming centrifugal pump |
Applications Claiming Priority (2)
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CN201810250634.0A CN108591071B (zh) | 2018-03-26 | 2018-03-26 | 一种半球形卷吸式大流量自吸离心泵 |
CN201810250634.0 | 2018-03-26 |
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US (1) | US11078914B2 (zh) |
CN (1) | CN108591071B (zh) |
AU (1) | AU2018415410B2 (zh) |
GB (1) | GB2585279C (zh) |
WO (1) | WO2019184010A1 (zh) |
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CN110397599B (zh) * | 2019-07-19 | 2020-09-25 | 江苏大学 | 一种应用于离心泵的自吸启动装置 |
CN113107858B (zh) * | 2021-04-13 | 2022-05-13 | 江苏大学镇江流体工程装备技术研究院 | 一种应用于离心泵的快速启动装置 |
CN113464450B (zh) * | 2021-07-14 | 2022-08-23 | 江苏大学 | 一种应用于离心泵的快速无水启动装置 |
CN114087205A (zh) * | 2021-10-28 | 2022-02-25 | 江苏大学 | 一种快速无水启动自吸装置 |
CN114370404A (zh) * | 2021-12-23 | 2022-04-19 | 江苏大学 | 一种气动式无水启动自吸装置 |
CN115163501A (zh) * | 2022-07-13 | 2022-10-11 | 江苏大学镇江流体工程装备技术研究院 | 一种应用于离心泵的高效无水启动自吸装置 |
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- 2018-03-26 CN CN201810250634.0A patent/CN108591071B/zh active Active
- 2018-04-13 US US16/966,007 patent/US11078914B2/en active Active
- 2018-04-13 GB GB2011543.2A patent/GB2585279C/en active Active
- 2018-04-13 WO PCT/CN2018/082953 patent/WO2019184010A1/zh active Application Filing
- 2018-04-13 AU AU2018415410A patent/AU2018415410B2/en active Active
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CN204663902U (zh) * | 2015-04-21 | 2015-09-23 | 江苏大学 | 一种自吸式离心泵 |
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