WO2009092300A1 - Agencement d'étanchéité de type n à joints multiple - Google Patents

Agencement d'étanchéité de type n à joints multiple Download PDF

Info

Publication number
WO2009092300A1
WO2009092300A1 PCT/CN2009/070029 CN2009070029W WO2009092300A1 WO 2009092300 A1 WO2009092300 A1 WO 2009092300A1 CN 2009070029 W CN2009070029 W CN 2009070029W WO 2009092300 A1 WO2009092300 A1 WO 2009092300A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
ring
sealing device
sealing ring
type
Prior art date
Application number
PCT/CN2009/070029
Other languages
English (en)
Chinese (zh)
Inventor
Chenghui Zhou
Lei Zhou
Xiang'an Zhang
Xiangxin Zhang
Original Assignee
Beijing New Seal Institute Of Hydraulic Technology
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 Beijing New Seal Institute Of Hydraulic Technology filed Critical Beijing New Seal Institute Of Hydraulic Technology
Publication of WO2009092300A1 publication Critical patent/WO2009092300A1/fr

Links

Classifications

    • 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/106—Shaft sealings especially adapted for liquid pumps
    • 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/14—Shaft sealings operative only when pump is inoperative
    • F04D29/146—Shaft sealings operative only when pump is inoperative especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/164—Sealings between relatively-moving surfaces the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
    • F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed

Definitions

  • the present invention relates to a sealing device, and more particularly to a multiple n-type sealing device, which belongs to the field of sealing technology. Background technique
  • Sealing technology is of great significance for preventing "three leaks" of oil and gas products (oil, gas, water), ensuring safe operation, improving work performance and efficiency, saving energy and protecting the environment.
  • the conventional rubber seals such as Type 0, Yx, and U are commonly used.
  • the rubber sealing element When the working pressure exceeds a certain value, the rubber sealing element will undergo yield deformation, and the working medium will pass through the sealing tape to cause leakage of the medium.
  • the failure of the seal will gradually reduce the working efficiency of the equipment, increase the energy consumption, form a pollution of the working environment, and cause serious production safety accidents, resulting in economic losses and casualties.
  • the sealing ring is squeezed from the outside of the sealing ring body, the conventional rubber sealing device is pre-stressed by the extrusion deformation during assembly to achieve the sealing effect, so that the rubber sealing member is in a deformed state for a long time, and the permanent deformation is easily lost.
  • the inventive idea of the invention is as follows: a sealing device block having a groove on the working surface of the cylinder and having a plurality of sealing ring seating grooves, and the passage hole on the end surface of the sealing device block guiding the medium into the inner cavity of each sealing ring and the working surface has The hollow n-shaped sealing ring of the boss constitutes the sealing device of the present invention.
  • a multiple n-type sealing device wherein: the sealing device block and the n-type sealing ring; the sealing device block is provided with at least one sealing ring seating groove 4; the sealing device block is provided with a passage hole for communicating the sealing ring seating groove and The end face of the sealing block; the n-shaped sealing ring is located in the sealing groove.
  • the working surface of the sealing device block is provided with a groove.
  • one passage hole communicates with a plurality of sealed seating grooves or one passage hole communicates with a sealed seating groove.
  • the n-shaped sealing ring is a shaft structure or a hole structure.
  • the multiple n-type sealing device according to claim 1, wherein the inner side of the working face of the n-shaped seal ring and the both sides of the seal ring constitute a hollow inner cavity.
  • the sealing surface of the sealing ring is provided with a boss.
  • n-type sealing device for the shaft sealing device and the hole sealing device characterized in that: the working face of the multi-n-type sealing device for the shaft is the outer ring; the working face of the multi-n-type sealing device for the hole is the inner ring; 3) There are a plurality of sealing ring mounting grooves on the sealing device block, and the number of the channels is determined according to the process performance requirements, and the number is not limited; 4) the end face of the sealing device block has a passage hole leading to each sealing ring to place the groove, guiding the medium into the n-shaped sealing The inner cavity of the ring, the passage holes can be shared, or can be separated separately; 5) The n-shaped seal ring has two types of shaft seal ring and hole seal ring; 6) the inner side of the n-type seal ring and the seal ring The side constitutes
  • the sealing device of the invention adopts a plurality of n-shaped sealing rings to form multiple seals, a better sealing effect can be obtained, the medium leakage is greatly reduced, and the working life is further extended. Compared with various types of existing sealing devices, it has excellent pressure resistance, good sealing effect, small leakage and long life. It can be used in a variety of different types of equipment, equipment that originally uses other types of sealing devices, and the sealing device of the present invention can be used as long as it is simply modified.
  • Figure 1 is a cross-sectional view of a multiple n-type sealing device sharing the same passage hole
  • Figure 2 is a cross-sectional view of a multiple n-type sealing device with independent passage holes
  • Figure 3 is a schematic view of the n-shaped seal ring for the shaft (left) and a cross-sectional view of the A-A (right);
  • Figure 4 is a cross-sectional view of the hole with an n-shaped seal (left) and a cross-section of the A-A (right);
  • Figure 5 is a cross-sectional view of a multiple n-type sealing device used as a piston seal in a hydraulic cylinder.
  • a sealing device block 5 having a plurality of sealing ring seating grooves 4 having a groove 8 on a cylindrical working surface, and a passage hole for guiding the medium into the inner cavity of each sealing ring on the end surface of the sealing device block 5 9 and hollow n-shaped sealing rings 1, 2 having bosses 3 on the working surface constitute the sealing device of the present invention. Its characteristics are as follows: 1) There are a certain number of grooves 8 on the cylindrical working surface of the sealing device block 5; the number is from zero to the required number.
  • the sealing device block 5 is provided with a plurality of sealing ring mounting grooves 4, the number of the channels is determined according to the process performance requirements, and the number is not limited; 4) the end surface of the sealing device block 5 has a passage hole 9 leading to each sealing ring to place the groove 4, guiding The medium enters the inner cavity of the n-shaped sealing ring 1, 2, and the passage holes 9 can be shared or separated separately; 5) the n-shaped sealing ring 1 and 2 have two types of shaft sealing ring 1 and hole sealing ring 2; The inner side of the working surface of the n-type sealing ring 1, 2 and the two sides of the sealing ring constitute a hollow inner cavity, and the sealing working surface of the sealing ring has a boss 3, and the number of the boss 3 is
  • a plurality of sealing ring seating grooves 4 are formed in the sealing device block 5, and a certain number of grooves 8 are formed on the cylindrical working surface of the sealing device block 5, and the n-shaped sealing ring 1 is 2 is installed in the seal ring seating groove 4; the end face of the seal block 5 has a plurality of passage holes 9 and each seal ring seating groove 4 communicates with each other.
  • the passage holes 9 can be used in combination or separately.
  • the shaft in Fig. 3 has an n-shaped sealing ring 1 having a certain number of bosses 3 on the sealing working surface, and the outer diameter L of the shaft-shaped n-ring 1 is similar to the inner diameter of the cylinder 7.
  • the hole in Fig. 4 uses an n-shaped sealing ring 2 having a certain number of bosses 3 on the sealing working surface, and the inner diameter D of the hole-shaped n-ring 2 is similar to the outer diameter of the piston rod 6.
  • a plurality of sealing ring seating grooves 4 are respectively opened at the end faces of the piston block 10, and the n-shaped sealing ring 1 is They are respectively installed in the respective mounting slots 4; a plurality of passage holes 9 are formed in the two end faces of the piston block 10 to the respective sealing ring seating slots 4, and the medium can be introduced into the inner cavity of the n-shaped sealing ring 1 for the shaft, the liquid and the pneumatic cylinder After starting work, the inner cavity of the seal is filled with media.
  • the working face of the n-shaped sealing ring 1 abuts against the sealing working surface of the cylinder block 7.
  • the medium pressure is transmitted from the medium to the inner cavity of the sealing ring through the end passage hole 9, so that the sealing surface of the shaft with the n-shaped sealing ring 1 and the sealing working surface of the cylinder 7 are in close contact with each other.
  • the n-shaped sealing ring for the shaft 1 The sealing table 3 on the sealing working surface and the groove 8 on the cylindrical working surface of the piston block 10 form a labyrinth seal, and the pressure is gradually attenuated when the medium passes, and no medium crossing occurs. Leakage, excellent sealing results.
  • n-type seals can also be used as end cap seals for liquid and pneumatic cylinders.
  • the end caps are multi-n-type seals with multiple n-type seals.
  • Figure 5 shows an end cap n-type sealing device.
  • the corresponding end of the cylinder inner end surface of the end cap 11 is provided with a passage hole 9 leading to each sealing ring seating groove 4, and the medium introduction hole can be sealed with an n-shape.
  • the hollow inner cavity of the sealing ring is filled with the medium.
  • the medium pressure is transmitted from the medium to the inner cavity of the sealing ring through the end passage hole 9 so that the sealing surface of the n-shaped sealing ring 2 and the sealing working surface of the piston rod 6 are in close contact with each other.
  • Each hole uses an n-shaped sealing ring 2, and the hole seals the boss 3 on the working surface with the n-shaped sealing ring 2 and the groove 8 on the cylindrical working surface of the end cover 11 to form a labyrinth seal, and the pressure gradually decreases when the medium passes. No media traverse leakage occurs and an excellent sealing effect is achieved. And the greater the medium pressure, the tighter the sealing surface of the hole with the n-shaped sealing ring 2 and the sealing working surface of the piston rod 6, the better the sealing effect, as long as the sealing ring body is not crushed, the sealing effect is always good.
  • the number of holes for the n-shaped seal ring 2 is determined by the process performance requirements.
  • the medium pressure exerts pressure on the sealing ring body from the inner cavity of the sealing ring, so that the sealing sealing working surface is tightly attached to the joint portion to be sealed of the device.
  • the n-shaped sealing ring, the boss 3 on the working surface of the n-shaped sealing ring and the groove 8 on the cylindrical working surface of the sealing device block 5 form a labyrinth seal, effectively preventing the leakage of the medium and achieving a very good sealing effect. Therefore, the pressure range of multiple n-type seals is far greater than that of conventional rubber seals. At the same time, the medium pressure is sealed from the inside by pressing the sealing ring body.
  • the sealing device of the invention has the advantages of high pressure resistance, small medium leakage and long service life.
  • the sealing device can be used as a sealing device for piston devices, end caps and various types of equipment.
  • the n-ring can be used directly.
  • the sealing device of the invention adopts a plurality of n-shaped sealing rings to form multiple seals, a better sealing effect can be obtained, the medium leakage is greatly reduced, and the working life is further extended. Compared with various types of existing sealing devices, it has excellent pressure resistance, good sealing effect, small leakage and long life. It can be used in a variety of different types of equipment, equipment that originally used other types of sealing devices, and the sealing device of the present invention can be used as long as it is simply modified.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Fluid Mechanics (AREA)
  • Sealing Devices (AREA)

Abstract

La présente invention concerne un agencement d'étanchéité de type n à joints multiple comportant un élément de joint (5) et un anneau d'étanchéité de type n (1, 2). L'élément de joint (5) est muni d'au moins une rainure de montage (4) pour l'anneau d'étanchéité et un trou traversant (9) pour la connexion de la rainure de montage (4) à la surface d'extrémité de l'élément de joint (5), l'anneau d'étanchéité de type n (1, 2) étant situé dans la rainure de montage (4) de l'anneau d'étanchéité. En outre, des rainures (8) sont prévues sur la surface de travail de l'élément de joint (5) et des saillies (3) sont prévues sur la surface de travail de l'anneau d'étanchéité de type n (1, 2). Le trou traversant (9) peut être connecté à une pluralité de rainures de montage (4) de l'anneau d'étanchéité ou sur une unique rainure de montage (4) de l'anneau d'étanchéité. L'anneau d'étanchéité de type n (1, 2) présente une structure d'axe d'assemblage et une structure d'alésage. L'agencement d'étanchéité selon la présente invention présente les avantages suivants : une résistance élevée à la compression, une fuite minimale et une longue durée de vie.
PCT/CN2009/070029 2008-01-08 2009-01-05 Agencement d'étanchéité de type n à joints multiple WO2009092300A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2008100557274A CN101482179A (zh) 2008-01-08 2008-01-08 多重n型密封装置
CN200810055727.4 2008-01-08

Publications (1)

Publication Number Publication Date
WO2009092300A1 true WO2009092300A1 (fr) 2009-07-30

Family

ID=40879409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/070029 WO2009092300A1 (fr) 2008-01-08 2009-01-05 Agencement d'étanchéité de type n à joints multiple

Country Status (2)

Country Link
CN (1) CN101482179A (fr)
WO (1) WO2009092300A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106936250A (zh) * 2017-05-09 2017-07-07 泰州市姜堰德力电机有限公司 自密封式潜水电机
CN108131387A (zh) * 2018-02-07 2018-06-08 徐工集团凯宫重工南京有限公司 一种复合密封盾构机用注浆轴承包
EP2679824B1 (fr) * 2011-02-25 2019-03-06 Mitsubishi Heavy Industries Compressor Corporation Compresseur
CN112648019A (zh) * 2021-02-02 2021-04-13 昆明理工大学 一种柔性密封装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588608A (zh) * 2011-01-14 2012-07-18 北京纽希液压技术研究所 一种复合密封装置
CN102954225B (zh) * 2011-11-30 2015-01-28 三峡大学 往复运动内压补偿式密封件
CN103388604A (zh) * 2012-05-07 2013-11-13 北京纽希液压技术研究所 一种液压缸
CN103387192A (zh) * 2012-05-07 2013-11-13 北京纽希液压技术研究所 一种新型千斤顶
CN103352979B (zh) * 2013-08-03 2015-11-18 刘立起 鼓型增压多环复合密封柱塞
CN104314911A (zh) * 2014-08-20 2015-01-28 青岛开世密封工业有限公司 一种气动密封装置
CN109653272B (zh) * 2018-11-20 2021-05-11 广州文冲船厂有限责任公司 一种耙吸式挖泥船的耙管对接密封结构
CN109737204B (zh) * 2019-03-07 2020-10-02 兰州理工大学 一种组合活塞密封件

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890849A (en) * 1983-05-17 1990-01-02 James Walker & Company Limited Shaft seals
CN2414257Y (zh) * 1999-12-21 2001-01-10 南京奥亿达液压气动技术有限公司 活塞h型油封装置
CN2483560Y (zh) * 2001-07-10 2002-03-27 蒋国华 压力补偿型径向密封装置
CN2509383Y (zh) * 2001-08-15 2002-09-04 南京奥亿达液压气动技术有限公司 往复自换向密封活塞装置
CN2520436Y (zh) * 2002-01-23 2002-11-13 周磊 W型内腔介质压力自补偿密封圈
CN2540525Y (zh) * 2002-04-29 2003-03-19 上海日立电器有限公司 具有润滑覆膜层的活塞
CN1904416A (zh) * 2005-07-25 2007-01-31 周承惠 内腔介质压力自补偿组合密封圈

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890849A (en) * 1983-05-17 1990-01-02 James Walker & Company Limited Shaft seals
CN2414257Y (zh) * 1999-12-21 2001-01-10 南京奥亿达液压气动技术有限公司 活塞h型油封装置
CN2483560Y (zh) * 2001-07-10 2002-03-27 蒋国华 压力补偿型径向密封装置
CN2509383Y (zh) * 2001-08-15 2002-09-04 南京奥亿达液压气动技术有限公司 往复自换向密封活塞装置
CN2520436Y (zh) * 2002-01-23 2002-11-13 周磊 W型内腔介质压力自补偿密封圈
CN2540525Y (zh) * 2002-04-29 2003-03-19 上海日立电器有限公司 具有润滑覆膜层的活塞
CN1904416A (zh) * 2005-07-25 2007-01-31 周承惠 内腔介质压力自补偿组合密封圈

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2679824B1 (fr) * 2011-02-25 2019-03-06 Mitsubishi Heavy Industries Compressor Corporation Compresseur
CN106936250A (zh) * 2017-05-09 2017-07-07 泰州市姜堰德力电机有限公司 自密封式潜水电机
CN108131387A (zh) * 2018-02-07 2018-06-08 徐工集团凯宫重工南京有限公司 一种复合密封盾构机用注浆轴承包
CN112648019A (zh) * 2021-02-02 2021-04-13 昆明理工大学 一种柔性密封装置
CN112648019B (zh) * 2021-02-02 2024-06-07 昆明理工大学 一种柔性密封装置

Also Published As

Publication number Publication date
CN101482179A (zh) 2009-07-15

Similar Documents

Publication Publication Date Title
WO2009092300A1 (fr) Agencement d'étanchéité de type n à joints multiple
CN202012621U (zh) 一种复合密封装置
CN201661684U (zh) 复合摩擦式密封装置
CN101435509A (zh) n型密封装置
CN201801346U (zh) 一种新型液压千斤顶
CN101532523A (zh) 一种新型液压缸
CN101451615A (zh) n型组合密封装置
CN201606335U (zh) 一种新型液压缸
CN2497115Y (zh) 活塞杆μ型密封装置
CN201934780U (zh) 一种改进型填料压套装置
CN214063975U (zh) 提升阀填料室密封结构
CN201606343U (zh) 一种多级液压缸
CN211715887U (zh) 齿轮齿条式气动执行器
CN207018532U (zh) 一种das组合密封圈
CN202756333U (zh) 一种液压缸
CN2916288Y (zh) 三维偏心双向金属硬密封蝶阀
WO2012094954A1 (fr) Dispositif d'étanchéité composite
CN101482180A (zh) 多重n型组合密封装置
CN202560543U (zh) 一种高压柱塞泵自适应密封装置
CN210637412U (zh) 一种制动器
CN215445106U (zh) 一种密封性强的阀杆
CN110953133A (zh) 可回收废弃流体中压力能的曲轴连杆型径向活塞泵
CN202971907U (zh) 用于填料密封改造的机械密封
CN202542772U (zh) 一种新型千斤顶
CN221195583U (zh) 一种具有组合式密封结构的液压缸

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09704703

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 02/11/2010)

122 Ep: pct application non-entry in european phase

Ref document number: 09704703

Country of ref document: EP

Kind code of ref document: A1