WO2017222404A1 - Торцевое уплотнение - Google Patents

Торцевое уплотнение Download PDF

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Publication number
WO2017222404A1
WO2017222404A1 PCT/RU2016/000373 RU2016000373W WO2017222404A1 WO 2017222404 A1 WO2017222404 A1 WO 2017222404A1 RU 2016000373 W RU2016000373 W RU 2016000373W WO 2017222404 A1 WO2017222404 A1 WO 2017222404A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator element
piston
seal
housing
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/RU2016/000373
Other languages
English (en)
French (fr)
Russian (ru)
Inventor
Андрей Николаевич АГРИНСКИЙ
Тимур Дмитриевич ВОРОНОВ
Андрей Владимирович ГОРОНКОВ
Родион Петрович КАЗАНЦЕВ
Сергей Юрьевич ШУЦКИЙ
Алексей Михайлович КУЗЬМИН
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.)
Science and Innovations JSC
Central Design Bureau of Machine Building JSC
Original Assignee
Science and Innovations JSC
Central Design Bureau of Machine Building JSC
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
Priority to CN201680038582.XA priority Critical patent/CN107923537A/zh
Priority to UAA201713089A priority patent/UA120883C2/uk
Priority to CA2991118A priority patent/CA2991118C/en
Priority to JP2018500712A priority patent/JP6908584B2/ja
Priority to PCT/RU2016/000373 priority patent/WO2017222404A1/ru
Priority to KR1020177037914A priority patent/KR20190046589A/ko
Priority to EP16905690.0A priority patent/EP3473897A4/en
Priority to US15/741,101 priority patent/US20180195614A1/en
Priority to BR112017028612-2A priority patent/BR112017028612A2/pt
Application filed by Science and Innovations JSC, Central Design Bureau of Machine Building JSC filed Critical Science and Innovations JSC
Publication of WO2017222404A1 publication Critical patent/WO2017222404A1/ru
Priority to ZA2018/00091A priority patent/ZA201800091B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings 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
    • F04D29/16—Sealings between pressure and suction sides
    • 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
    • F16J15/002—Sealings comprising at least two sealings in succession
    • 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
    • F16J15/002—Sealings comprising at least two sealings in succession
    • F16J15/008—Sealings comprising at least two sealings in succession with provision to put out of action at least one sealing; One sealing sealing only on standstill; Emergency or servicing sealings
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
    • F16J15/3408—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface
    • F16J15/3412—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal at least one ring having an uneven slipping surface with cavities
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3452—Pressing means the pressing force resulting from the action of a spring
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/346—Pressing means the pressing force varying during operation
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3464—Mounting of the seal
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3464—Mounting of the seal
    • F16J15/348—Pre-assembled seals, e.g. cartridge seals
    • F16J15/3484—Tandem seals
    • 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
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/38—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
    • 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
    • F04D29/12—Shaft sealings using sealing-rings

Definitions

  • the invention relates to mechanical seals of the rotors of pumping units for separating media or differential pressure.
  • the invention can be used in the design of pumps used in nuclear power plants, in particular main circulation pumps.
  • a known block of mechanical seals (RF Patent ⁇ réelle 2084730 publ. 07.20.1997, IPC F16J 15/34).
  • This design is a multi-stage mechanical seal containing sequentially installed working stages and an end stage, each of which includes a rotor element located on the shaft and a spring-loaded axially movable stator element in contact with it, sealed with a sealing ring relative to the housing, and high and low pressure cavities of the workers steps are connected in series by throttle holes in the stator housing.
  • a stepped cylindrical bore is made in the housing parallel to the shaft axis, communicating in a smaller diameter with a high-pressure cavity, and in larger - with a low-pressure cavity, in which axially movable stepped cylindrical pistons are installed, sealed in bores of a larger and smaller diameter with the possibility of interaction of the piston end smaller diameter with a stator element.
  • This design serves to force each seal stage to be closed, if opened, by supplying the unit with power step pistons in addition to the springs.
  • the design drawback is the presence of an additional mechanical assembly - a piston, which can affect the product’s performance if it is jammed, for example, in the lowest position. This can lead to the destruction of the friction pair of the seal.
  • the housing in turn, consists of an external cylinder, in which a stepped and a thrust ring are installed sequentially, one per step. The thrust ring serves to abut the spring between it and the stator element.
  • the stator element and the stepped ring of the housing are made so that the stator element acts as an axially movable step piston sealed with rubber seals, while a part of the piston with a smaller diameter is located in the high-pressure region - before the seal, and the second part with a large outer diameter is on the smaller side pressure or behind the seal.
  • a low is made on the stator element.
  • a through hole is made in the stepped ring corresponding to the stator element in the area of transitions of the cylinder diameters corresponding to the piston of the stator element, so that, at any position of the stator element, it does not go beyond the borders of the casing on it. This hole serves to compensate for vacuum-compression in the volume of the cavity formed during movements of the stator element.
  • the seal of the hole in the housing is realized between the outer cylinder and the stepped ring by two rubber rings between which it is located.
  • the operation of the seal is as follows. During normal operation of the block of mechanical seals using throttle openings at each working stage of the seal, a part of the working pressure is activated, depending on the capacity of the throttle. As a result, a force acts on the piston of the stator element from the side before the seal
  • F x R g x l: 1 0 , where Di is the smaller piston diameter of the stator element, D 0 is the internal diameter of the stator element, Pi is the pressure before the seal, from the side behind the seal to
  • the invention is illustrated in the drawing, which shows a General view (axial section) of the mechanical seal.
  • the multi-stage mechanical seal consists of a housing 10 made in the form of an external cylinder, in which step 11 and thrust 12 rings are installed one at a time, one as well as rotor elements 3 located on the shaft with contact surfaces 1 and spring-loaded axially movable stator elements in contact with them 4 with contact surfaces 2.
  • springs 13 are mounted, providing a force pressed between the contact surfaces 1 and 2.
  • the high pressure cavities 7 formed by the stepped rings 11, the stator elements 4 and the rotor elements 3 are connected to the low pressure cavities 8 formed between the thrust rings 12, the stepped rings 11, the stator elements 4 and the rotor elements 3, the throttle openings 9 made in the stator elements 4.
  • the stator element 4 and the stepped ring 11 are made so that the stator element acts as an axially movable stepped piston, with a part of the piston with a smaller diameter located in the high pressure region — before the seal, and the second part with a large outer diameter — from the side of the lower pressure or behind seal.
  • the stator element 4 is lowered 14.
  • a through hole 15 is made in the region of transitions of the diameters of the cylinders so that at any position of the stator element it does not go beyond the borders downs on it. This hole serves to compensate for the vacuum-compression in the volume between the stepped ring 11 and the stator element 4 limited by the rubber rings 6 of the cavity formed when the stator element 4 is moved.
  • the seal of this volume between the outer cylinder 10 and the stepped ring 11 is made of two rubber rings 5.
  • the force F 2 ⁇ 2 * ⁇ 2 4 ° acts on the piston of the stator element, where D 2 is the larger diameter of the piston of the stator element, ⁇ 2 is the pressure from the side of the low-pressure cavity, equal to kP where k (0 ⁇ k ⁇ 1) is the coefficient of pressure reduction due to the throttle in the stator element.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Mechanical Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
PCT/RU2016/000373 2016-06-20 2016-06-20 Торцевое уплотнение Ceased WO2017222404A1 (ru)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US15/741,101 US20180195614A1 (en) 2016-06-20 2016-06-20 Face Seal
UAA201713089A UA120883C2 (uk) 2016-06-20 2016-06-20 Торцеве ущільнення
CA2991118A CA2991118C (en) 2016-06-20 2016-06-20 Face seal
JP2018500712A JP6908584B2 (ja) 2016-06-20 2016-06-20 メカニカルシール
PCT/RU2016/000373 WO2017222404A1 (ru) 2016-06-20 2016-06-20 Торцевое уплотнение
CN201680038582.XA CN107923537A (zh) 2016-06-20 2016-06-20 端面密封
EP16905690.0A EP3473897A4 (en) 2016-06-20 2016-06-20 End seal
KR1020177037914A KR20190046589A (ko) 2016-06-20 2016-06-20 페이스 시일
BR112017028612-2A BR112017028612A2 (pt) 2016-06-20 2016-06-20 selagem mecânica
ZA2018/00091A ZA201800091B (en) 2016-06-20 2018-01-05 End seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2016/000373 WO2017222404A1 (ru) 2016-06-20 2016-06-20 Торцевое уплотнение

Publications (1)

Publication Number Publication Date
WO2017222404A1 true WO2017222404A1 (ru) 2017-12-28

Family

ID=60783408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2016/000373 Ceased WO2017222404A1 (ru) 2016-06-20 2016-06-20 Торцевое уплотнение

Country Status (10)

Country Link
US (1) US20180195614A1 (enExample)
EP (1) EP3473897A4 (enExample)
JP (1) JP6908584B2 (enExample)
KR (1) KR20190046589A (enExample)
CN (1) CN107923537A (enExample)
BR (1) BR112017028612A2 (enExample)
CA (1) CA2991118C (enExample)
UA (1) UA120883C2 (enExample)
WO (1) WO2017222404A1 (enExample)
ZA (1) ZA201800091B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7590181B2 (ja) 2018-02-21 2024-11-26 キャンドゥ・エナジー・インコーポレーテッド 原子力冷却剤ポンプの封止部、および封止する方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1603115A1 (ru) * 1989-01-30 1990-10-30 Предприятие П/Я М-5356 Многоступенчатое торцовое уплотнение
RU2084730C1 (ru) 1995-02-10 1997-07-20 Центральное конструкторское бюро машиностроения Блок торцовых уплотнений

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813103A (en) * 1972-04-12 1974-05-28 Borg Warner Mechanical seal with improved leakage control
US5217233A (en) * 1989-10-30 1993-06-08 John Crane Inc. Spiral groove seal system for sealing a high pressure gas
US20050242515A1 (en) * 2004-04-28 2005-11-03 Brooks Melvin D Dry gas seal and method for making the same
EP1914387A1 (de) * 2006-10-19 2008-04-23 Siemens Aktiengesellschaft Turbomaschine und Verfahren zum Turnen einer Turbomaschine
CN102072322A (zh) * 2011-01-31 2011-05-25 江苏金鹰流体机械有限公司 双端面组合式密封装置
US10598222B2 (en) * 2012-01-03 2020-03-24 New Way Machine Components, Inc. Air bearing for use as seal
JP6198636B2 (ja) * 2014-02-28 2017-09-20 日本ピラー工業株式会社 静圧形の非接触形メカニカルシール

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1603115A1 (ru) * 1989-01-30 1990-10-30 Предприятие П/Я М-5356 Многоступенчатое торцовое уплотнение
RU2084730C1 (ru) 1995-02-10 1997-07-20 Центральное конструкторское бюро машиностроения Блок торцовых уплотнений

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3473897A4

Also Published As

Publication number Publication date
BR112017028612A2 (pt) 2018-09-04
EP3473897A4 (en) 2020-03-11
JP2019518173A (ja) 2019-06-27
US20180195614A1 (en) 2018-07-12
ZA201800091B (en) 2019-06-26
EP3473897A1 (en) 2019-04-24
JP6908584B2 (ja) 2021-07-28
CN107923537A (zh) 2018-04-17
CA2991118C (en) 2021-11-09
UA120883C2 (uk) 2020-02-25
KR20190046589A (ko) 2019-05-07
CA2991118A1 (en) 2017-12-28

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