RU95112054A - Contactless end face seal - Google Patents

Contactless end face seal

Info

Publication number
RU95112054A
RU95112054A RU95112054/06A RU95112054A RU95112054A RU 95112054 A RU95112054 A RU 95112054A RU 95112054/06 A RU95112054/06 A RU 95112054/06A RU 95112054 A RU95112054 A RU 95112054A RU 95112054 A RU95112054 A RU 95112054A
Authority
RU
Russia
Prior art keywords
ring
sealing
seal
rotation
shaft
Prior art date
Application number
RU95112054/06A
Other languages
Russian (ru)
Other versions
RU2099618C1 (en
Inventor
В.Б. Балякин
Д.К. Новиков
С.В. Фалалеев
Original Assignee
В.Б. Балякин
Д.К. Новиков
С.В. Фалалеев
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 В.Б. Балякин, Д.К. Новиков, С.В. Фалалеев filed Critical В.Б. Балякин
Priority to RU95112054A priority Critical patent/RU2099618C1/en
Publication of RU95112054A publication Critical patent/RU95112054A/en
Application granted granted Critical
Publication of RU2099618C1 publication Critical patent/RU2099618C1/en

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  • Mechanical Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)

Abstract

FIELD: hydraulic mechanical engineering. SUBSTANCE: contactless end face seal consists of limiter of the flow rate of gas made up as labyrinth 2 and two steps of seals 3 and 4 mounted in series inside a united housing,. Each of the steps has sealing ring 17 with projection 27. The ring is fixed against rotation and movable in the axially direction. The projection is defined by the step of the ring from the side of the inner diameter which is tightly mounted inside the housing on flexible members 20 through secondary rubber seal and forms a sealing gap with ring 3 flexibly mounted on shaft 8. The seal is also has a device for control of the gap made up as a sealing ring step surface provided with a hollow from the side of periphery on the end face working rotation surface of the ring with ribs 24 arranged in the zone of the hollow in the step surface from the step to the periphery of the ring. The height of the ribs is less than the height of the step. The ribs point to the high pressure space and are inclined in the direction of rotation of the shaft. The outer cylindrical surface of rotation ring 3 is provided with grooves 26. Thin-walled projection 27 on the seal ring has groove 28 at its base from the back side of the ring. EFFECT: enhanced reliability.

Claims (1)

Торцовое бесконтактное уплотнение, состоящее из последовательно установленных в едином корпусе ограничителя расхода рабочего газа в виде лабиринта и двух ступеней уплотнения, каждая из которых содержит зафиксированное от проворота подвижное в осевом направлении уплотнительное кольцо с выступом, образованным ступенчатым изменением толщины кольца со стороны внутреннего диаметра, которое установлено герметично посредством вторичного резинового уплотнения в корпусе на упругих элементах и образует уплотнительную щель с упруго установленным на валу вращающимся кольцом, и устройство регулирования зазора, отличающееся тем, что устройство регулирования зазора выполнено в виде уплотнительной кольцевой поверхности ступенчатой формы с углублением со стороны периферии на торцовой рабочей поверхности вращающегося кольца с ребрами, расположенными в зоне углубления ступенчатой поверхности от ступеньки до периферии кольца и выполненными меньшей высоты по сравнению со ступенькой, направленными в сторону полости высокого давления и наклоненными в направлении вращения вала, а также в виде кольцевых проточек на наружной цилиндрической поверхности вращающегося кольца, тонкостенного выступа на уплотнительном кольце с проточкой у его основания с обратной стороны кольца, установленного под вторичное резиновое уплотнение со стороны уплотнительного кольца и корпуса подвижного кольцевого элемента из полимера с повышенными антифрикционными свойствами и с разгрузкой по внутренней цилиндрической опорной поверхности элемента.A non-contact mechanical seal, consisting of a labyrinth and two sealing stages, sequentially installed in a single enclosure of a working gas flow rate limiter, each of which contains an axially movable o-ring seal with a protrusion formed by a stepwise change in the thickness of the ring from the side of the inner diameter, which installed tightly by means of a secondary rubber seal in the housing on the elastic elements and forms a sealing gap with elastically installed a rotating ring on the shaft, and a clearance adjustment device, characterized in that the clearance adjustment device is made in the form of a stepped annular sealing surface with a recess from the periphery side on the end working surface of the rotating ring with ribs located in the stepped surface recess zone from the step to the periphery rings and made of a lower height compared to the step, directed towards the high-pressure cavity and inclined in the direction of rotation of the shaft as well as in the form of annular grooves on the outer cylindrical surface of the rotating ring, a thin-walled protrusion on the sealing ring with a groove at its base on the reverse side of the ring, mounted under the secondary rubber seal on the side of the sealing ring and the body of the movable ring element made of polymer with increased antifriction properties and with unloading on the inner cylindrical supporting surface of the element.
RU95112054A 1995-07-05 1995-07-05 Contactless end seal RU2099618C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU95112054A RU2099618C1 (en) 1995-07-05 1995-07-05 Contactless end seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU95112054A RU2099618C1 (en) 1995-07-05 1995-07-05 Contactless end seal

Publications (2)

Publication Number Publication Date
RU95112054A true RU95112054A (en) 1997-06-27
RU2099618C1 RU2099618C1 (en) 1997-12-20

Family

ID=20170048

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95112054A RU2099618C1 (en) 1995-07-05 1995-07-05 Contactless end seal

Country Status (1)

Country Link
RU (1) RU2099618C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU173972U1 (en) * 2016-12-20 2017-09-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" DEVICE FOR SEALING SHELVES INTENDED FOR PASSING COMMUNICATIONS

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1397059B1 (en) * 2009-11-23 2012-12-28 Nuovo Pignone Spa SEAL SYSTEM FOR DRY GAS, LOW EMISSION FOR COMPRESSORS
RU2443921C1 (en) * 2011-02-07 2012-02-27 Закрытое акционерное общество "Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров им. В.Б. Шнеппа" End gas dynamic seal of shaft of centrifugal compressor
RU2598966C1 (en) * 2015-07-03 2016-10-10 федеральное государственное автономное образовательное учреждение высшего образования "Самарский государственный аэрокосмический университет имени академика С.П. Королева (национальный исследовательский университет)" (СГАУ) End gas dynamic seal of turbomachine rotor support

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU173972U1 (en) * 2016-12-20 2017-09-22 Общество с ограниченной ответственностью "Газпром трансгаз Казань" DEVICE FOR SEALING SHELVES INTENDED FOR PASSING COMMUNICATIONS

Also Published As

Publication number Publication date
RU2099618C1 (en) 1997-12-20

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