WO2022237104A1 - Dispositif de mélange permettant d'améliorer la précision de mesure d'un dispositif de mesure de densité de suspension deprotection - Google Patents

Dispositif de mélange permettant d'améliorer la précision de mesure d'un dispositif de mesure de densité de suspension deprotection Download PDF

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Publication number
WO2022237104A1
WO2022237104A1 PCT/CN2021/130603 CN2021130603W WO2022237104A1 WO 2022237104 A1 WO2022237104 A1 WO 2022237104A1 CN 2021130603 W CN2021130603 W CN 2021130603W WO 2022237104 A1 WO2022237104 A1 WO 2022237104A1
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WIPO (PCT)
Prior art keywords
mud
inner drum
drum
density meter
outer cylinder
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2021/130603
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English (en)
Chinese (zh)
Inventor
曾垂刚
吕乾乾
张彦伟
李治国
杨振兴
张兵
赵海雷
孙飞祥
王利明
翟乾智
张继超
王发民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Key Laboratory of Shield Machine and Boring Technology
China Railway Tunnel Group Co Ltd CRTG
Original Assignee
State Key Laboratory of Shield Machine and Boring Technology
China Railway Tunnel Group Co Ltd CRTG
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 State Key Laboratory of Shield Machine and Boring Technology, China Railway Tunnel Group Co Ltd CRTG filed Critical State Key Laboratory of Shield Machine and Boring Technology
Publication of WO2022237104A1 publication Critical patent/WO2022237104A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/60—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers
    • B01F29/63—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers with fixed bars, i.e. stationary, or fixed on the receptacle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/24—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by observing the transmission of wave or particle radiation through the material

Definitions

  • the invention relates to the technical field of shield tunneling, in particular to a mixing device for improving the measurement accuracy of a shield mud density meter.
  • a radioactive densitometer In the field of shield construction technology, a radioactive densitometer is usually used to measure the density of shield mud.
  • the emission source in the radioactive densitometer emits gamma rays to the receiving probe. There is a certain relationship, and the density of the medium is measured non-contact according to the above principles.
  • the mud in the mud pipe is usually a non-uniform two-component liquid, and the mud flows in layers, and the density between the upper liquid and the lower liquid is different, which gives the radioactive density installed on the mud pipe.
  • the measurement work of the shield machine brings large errors, and the measurement accuracy of the shield mud density is poor.
  • the purpose of the present invention is to propose a mixing device for improving the measurement accuracy of the shield mud density meter, which can solve the measurement error caused by the stratification of the shield mud density meter in the prior art. problem, improve the measurement accuracy of shield mud density.
  • the present invention provides the following technical solutions: a mixing device for improving the measurement accuracy of the shield mud density meter, which is installed between two mud pipes and located upstream of the radioactive density meter in the flow direction of the mud, including the mud
  • the external motor on the outside of the pipe, the inner drum and the outer drum coaxial with the mud pipe, the inner drum is rotatably assembled inside the outer drum, the outer wall of the inner drum is fixed or integrally formed with a drum gear, and the output end of the external motor is locked
  • the driving gear is connected, and the position corresponding to the roller gear on the outer cylinder is provided with an insertion port for the driving gear to extend into and mesh with the roller gear;
  • the outer cylinder is used for fixed connection with the two mud pipes.
  • the two ends of the inner drum extend into the two mud pipes respectively, and the outer walls of the two ends of the inner drum are respectively provided with sealing rings for sealing and matching with the two mud pipes.
  • the inner drum is driven by the driving gear.
  • the transmission rotates, and the mud rotates with the inner drum and mixes evenly.
  • the external motor drives the drive gear to rotate. Since the drive gear extends into the mouth and meshes with the drum gear for transmission, the inner drum can rotate relative to the outer drum. When the mud flows through the inner drum, it can follow the The inner drum rotates together, and then mixes evenly and flows to the radioactive density meter at the downstream position. Since the mud is evenly mixed at this time, the radioactive densitometer can measure the density of the mud more accurately, and the mud measurement error is small, which greatly improves the quality of the mud. Density measurement accuracy.
  • a mixing device of the present invention for improving the measurement accuracy of the shield mud density meter is installed at the upstream position of the radioactive densitometer when in use, and it can well mix the layered mud in the mud pipeline, and the concept is ingenious, which can avoid mud layering
  • the error brought to the density measurement solves the problem of low measurement accuracy of the radiodensity meter in the prior art.
  • the inner wall of the inner drum is provided with helical blades.
  • outer cylinder and the inner cylinder are rotationally connected by self-aligning roller bearings.
  • the outer ring and inner ring of the spherical roller bearings are respectively in interference fit with the inner wall of the outer cylinder and the outer wall of the inner roller.
  • the self-aligning roller bearing can not only bear the radial load, but also bear the axial load. Since in the present invention, both the inner drum and the outer drum will be subjected to axial force during the mud being transported and stirred, the adoption of Self-aligning roller bearings, the rotation and cooperation between the outer cylinder and the inner cylinder are relatively stable, and the self-aligning roller bearings are not easy to be damaged.
  • the outer wall of the inner drum is provided with installation grooves on both sides of the two self-aligning roller bearings away from each other. Inside the installation grooves, a retaining ring for one-way limiting the axial movement of the spherical roller bearings is installed.
  • the inner wall of the outer cylinder An annular stepped surface is provided between the two self-aligning roller bearings and is respectively used for the axial stop and cooperation of the two self-aligning roller bearings.
  • the adoption of the above structure not only ensures that the self-aligning roller bearing is not easy to move in the axial direction, the axial force transmission between the self-aligning roller bearing, the outer cylinder and the inner cylinder is relatively stable, and the structure is relatively firm.
  • sealing ring is a VDS type sealing ring.
  • VDS sealing ring has a good sealing effect and can better prevent mud seepage.
  • the two ends of the outer cylinder are provided with flanges for connecting with two mud pipes with bolts.
  • Fig. 1 is the use state schematic diagram of the specific embodiment 1 of the mixing device for improving the measurement accuracy of the shield mud density meter of the present invention
  • Fig. 2 is a sectional view at A-A place in Fig. 1;
  • the present invention is installed between two mud pipes 1 when in use, and is positioned at the upstream position of radioactive density meter (not shown in the figure) in the flow direction of mud, mainly consists of inner drum 2, outer Cylinder 3 and an external motor 4, the inner cylinder 2 is assembled inside the outer cylinder 3 through the self-aligning roller bearings 6 located outside the two ends of the inner cylinder 2, and the outer ring and inner ring of the spherical roller bearing 6 are respectively connected with the The inner wall of the drum and the outer wall of the inner drum are interference fit.
  • the retaining ring 7 On the outer wall of the inner drum 2, there are installation grooves for installing the retaining ring 7 on the two sides of the two self-aligning roller bearings 6 facing away from each other.
  • the retaining ring 7 is used for one-way Limit the axial displacement of the self-aligning roller bearing 6; in addition, the inner wall of the outer cylinder 3 is provided between the two self-aligning roller bearings 6, which are used to cooperate with the two self-aligning roller bearings 6 in the axial direction.
  • the step surface 8 through the above-mentioned structural arrangement, not only plays the role of restricting the axial movement of the spherical roller bearing 6, but also enables the axial force to be transmitted well among the spherical roller bearing 6, the outer cylinder 3, and the inner cylinder 2,
  • the structure is stable.
  • the two ends of the outer cylinder 3 are provided with flanges 12 respectively.
  • the ends of the two mud pipes are also provided with pipe flanges for use in conjunction with the flanges 12.
  • the outer cylinder 3 is connected with the two flanges 12, bolts, nuts
  • the mud pipe is fixedly connected.
  • the two ends of the inner drum 2 extend into the two mud pipes respectively, and the outer wall of the inner drum 2 is provided with a sealing groove, and the sealing groove is provided with a sealing ring for maintaining a tight fit between the inner drum 2 and the mud pipe.
  • the sealing ring is a VDS type sealing ring 10, which has good sealing performance and can prevent mud from seeping out from between the inner drum 2 and the mud pipe.
  • the output end of the external motor 4 is connected to the drive gear 5 through key fit and anti-rotation.
  • the outer wall of the inner drum 3 is integrally provided with a drum gear 11.
  • the outer drum 3 is at a position corresponding to the drum gear 11.
  • the drive gear 5 extends into the outer cylinder 3 from the insertion opening 13 and engages with the drum gear 11 for transmission.
  • the external motor 4 can drive the inner drum 2 to rotate through the drive gear 5. Then the mud passing through the inside of the inner drum 2 is rotated together to mix the mud evenly.
  • the inner wall of the inner drum 2 is provided with a helical blade 9 for stirring the mud.
  • a mixing device for improving the measurement accuracy of the shield mud density meter according to the present invention when in use, the mud is mixed and stirred by the rotating inner drum 2, so as to eliminate the mud stratification phenomenon as much as possible, so that the mud density after mixing is relatively uniform, Afterwards, the density measurement is carried out by the radioactive densitometer located in the downstream position, which can obtain high-precision measurement results, effectively eliminate the error caused by mud stratification to the density measurement, and improve the measurement accuracy.
  • the invention has ingenious concept and unique structure.
  • the inner drum and the outer drum are rotated and matched by the self-aligning roller bearing.
  • the self-aligning roller bearing can not only bear the radial force, but also bear the bidirectional force.
  • Axial force, bearing effect is good, to ensure that the rotation of the inner drum is relatively stable;
  • the outer drum is provided with a ring-shaped step surface, which can play the role of an over-push bearing, and the inner drum and the mud pipe are dynamically sealed by a VDS type sealing ring. , Good anti-seepage effect.
  • Embodiment 1 The difference from Embodiment 1 is that the drum gear is fixed on the outer side wall of the inner drum.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Radiation (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

L'invention concerne un dispositif de mélange pour améliorer la précision de mesure d'un dispositif de mesure de densité de suspension de protection, comprenant un moteur externe (4) situé sur le côté extérieur d'un tuyau de suspension (1), et un rouleau interne (2) et un cylindre externe (3) coaxial avec le tuyau de suspension (1). Le rouleau interne (2) est assemblé de manière rotative à l'intérieur du cylindre externe (3). Un engrenage à rouleaux (11) est fixé ou formé d'un seul tenant sur la paroi latérale externe du rouleau interne (2). Un engrenage d'entraînement (5) est raccordé à l'extrémité de sortie du moteur externe (4) dans un mode d'arrêt de rotation. Une ouverture (13) qui permet à l'engrenage d'entraînement (5) de s'étendre dans et à être en transmission enclenchée avec l'engrenage à rouleaux (11) est formée sur le cylindre externe (3) à la position correspondant à l'engrenage à rouleaux (11). Le cylindre externe (3) est utilisé pour être raccordé de manière fixe à deux tuyaux de suspension (1). Deux extrémités du rouleau interne (2) s'étendent respectivement dans les deux tuyaux de suspension (1), et les parois latérales externes des deux extrémités du rouleau interne (2) sont respectivement pourvues de bagues d'étanchéité (10) utilisées pour faire correspondre les deux tuyaux de suspension (1) dans un mode d'étanchéité. Lors de l'utilisation, le rouleau interne (2) est entraîné par l'engrenage d'entraînement (5) pour tourner, et la suspension est mélangée uniformément avec le rouleau interne (2).
PCT/CN2021/130603 2021-05-13 2021-11-15 Dispositif de mélange permettant d'améliorer la précision de mesure d'un dispositif de mesure de densité de suspension deprotection Ceased WO2022237104A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110523957.4 2021-05-13
CN202110523957.4A CN113069968A (zh) 2021-05-13 2021-05-13 一种用于提高盾构泥浆密度计测量精度的混合装置

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WO2022237104A1 true WO2022237104A1 (fr) 2022-11-17

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113069968A (zh) * 2021-05-13 2021-07-06 盾构及掘进技术国家重点实验室 一种用于提高盾构泥浆密度计测量精度的混合装置

Citations (8)

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US4384807A (en) * 1979-12-18 1983-05-24 Tekken Construction Co., Ltd. Excavation controlling method in hydraulic shield tunnelling
US20090193889A1 (en) * 2007-12-22 2009-08-06 Precision Energy Services, Inc. Measurement tool and method of use
CN202748288U (zh) * 2012-05-17 2013-02-20 陈亚萍 一种连续测定管道内流动泥浆的密度仪
CN202854001U (zh) * 2012-07-30 2013-04-03 昆明理工大学 一种复合式矿浆密度在线检测装置
CN105705931A (zh) * 2013-11-07 2016-06-22 阿里阿房地产有限责任公司 用于泥浆的密度计
CN205896429U (zh) * 2016-07-21 2017-01-18 中山中舟海洋科技有限公司 一种具有实时自清洗功能的钢管
CN208406869U (zh) * 2018-05-31 2019-01-22 攀枝花学院 高效搅拌装置
CN113069968A (zh) * 2021-05-13 2021-07-06 盾构及掘进技术国家重点实验室 一种用于提高盾构泥浆密度计测量精度的混合装置

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CN102441336B (zh) * 2011-09-24 2013-08-14 太原理工大学 一种直线电动机驱动的固体物料混料器
CN204772978U (zh) * 2015-06-29 2015-11-18 王冲 一种泡沫混凝土密度调控装置
CN205616752U (zh) * 2016-03-21 2016-10-05 华南理工大学 一种污泥湿包干混合装置
CN111467989A (zh) * 2019-12-30 2020-07-31 江苏汉邦科技有限公司 一种新型循环式动态在线混合器
CN111948094A (zh) * 2020-09-16 2020-11-17 山东东山王楼煤矿有限公司 一种覆岩隔离注浆充填浆液密度检测装置及其系统

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384807A (en) * 1979-12-18 1983-05-24 Tekken Construction Co., Ltd. Excavation controlling method in hydraulic shield tunnelling
US20090193889A1 (en) * 2007-12-22 2009-08-06 Precision Energy Services, Inc. Measurement tool and method of use
CN202748288U (zh) * 2012-05-17 2013-02-20 陈亚萍 一种连续测定管道内流动泥浆的密度仪
CN202854001U (zh) * 2012-07-30 2013-04-03 昆明理工大学 一种复合式矿浆密度在线检测装置
CN105705931A (zh) * 2013-11-07 2016-06-22 阿里阿房地产有限责任公司 用于泥浆的密度计
CN205896429U (zh) * 2016-07-21 2017-01-18 中山中舟海洋科技有限公司 一种具有实时自清洗功能的钢管
CN208406869U (zh) * 2018-05-31 2019-01-22 攀枝花学院 高效搅拌装置
CN113069968A (zh) * 2021-05-13 2021-07-06 盾构及掘进技术国家重点实验室 一种用于提高盾构泥浆密度计测量精度的混合装置

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