US3797963A - Sealing apparatus for gas compressor - Google Patents

Sealing apparatus for gas compressor Download PDF

Info

Publication number
US3797963A
US3797963A US00205918A US3797963DA US3797963A US 3797963 A US3797963 A US 3797963A US 00205918 A US00205918 A US 00205918A US 3797963D A US3797963D A US 3797963DA US 3797963 A US3797963 A US 3797963A
Authority
US
United States
Prior art keywords
chambers
pressure
gas
head tank
sealing liquid
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.)
Expired - Lifetime
Application number
US00205918A
Other languages
English (en)
Inventor
S Sugimura
T Endo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3797963A publication Critical patent/US3797963A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
    • F04D29/104—Shaft sealings especially adapted for elastic fluid pumps the sealing fluid being other than the working fluid or being the working fluid treated

Definitions

  • ABSTRACT Apparatus for sealing the rotor shaft of gas compressor by sealing liquid fed under pressure comprising equalizing gas chambers, sealing liquid chambers. a head tank to feed the sealing liquid into the sealing liquid chambers, and means for regulating the pressure in the head tank according to the operating condition of the gas compressor.
  • This invention relates to a rotary gas compressor, and more particularly to a sealing mechanism for the gas compressor.
  • An object of this invention is to provide a novel sealing apparatus for adjusting pressure of sealing liquid. which is simplified construction.
  • FIG. 1 is a diagrammatic illustration of a gas compressor provided with a conventional sealing apparatus
  • FIG. 2 is an enlarged sectional view of sealing apparatus in FIG. 1;
  • FIG. 3 is a diagrammatic illustration of a gas compressor provided with the sealing apparatus according to the present invention.
  • the conventional rotary gas compressor generally designated by A in FIGS. 1 and 2 are provided with equalizing gas chambers C, sealing liquid chambers D and atmospheric chambers E which are arranged in side by side relation on both sides of rotor B, was to prevent leakage of operating fluid by suitably selected pressure relation among these chambers.
  • each sealing liquid chamber D is provided with a sealing sleeve F such as shown in FIG. 2, and sealing liquid under pressure is fed into the chambers D from a head tank G positioned at a higher level than the chamber assemblies.
  • To the head tank G is supplied sealing liquid, from a sealing liquid tank H located at a lower position than the gas compressor A, under control of a liquid level controller I. Since the head tank G is connected to the equalizing chambers C of the gas compressor.
  • sealing liquid is supplied under higher pressure than that of the equalizing chambers by the pressure corresponding to the difference of height between the tank G and the chamber C. Accordingly, the sealing liquid supplied to the sealing liquid chambers D through a sealing liquid supply pipe line J and the spaces between the rotor and partition walls of the respective chambers flows into equalizing gas chambers C and atmospheric chambers E respectively. The liquid flown into the atmospheric chambers E is returned to the tank H through drain pipes K. The liquid flows into the equalizing gas chambers C is discharged into a waste liquid tank M through drain pipes L. because the liquid may be contaminated by operating fluid in the gas compressor A.
  • the sealing liquid discarded into the waste liquid tank M must be limited to a small amounts for operating economy of the gas compressor. Accordingly it has been usually practiced to adjust pressure of the sealing liquid by changing the mounting position of the head tank G according to the operating condition of the compressor. Such measures, however, entail manufacturing cost of the apparatus for adjusting the mounting position of the head tank G and additionally, it is difficult to change the mounting position without stopping operation of the compressor.
  • the present invention provides a simple apparatus which can adjust the pressure of the sealing liquid.
  • a feature of the present invention resides in an arrangement in which pressure gas in the gas compressor is fed into the head tank correspondingly to the difference between pressures in the top space in the head tank and in the equalizing gas chambers. thereby to maintain pressure in the head tank at a desired level.
  • a pressure supply pipe line 2 branched off from an exhaust pipe 1 of the gas compressor A is connected to the top of the head tank G, and a flow rate control valve 3 is incorporated in the pressure supply pipe line 2.
  • a pressure pipe line 4 Also connected into the top space in the head tank G is a pressure pipe line 4 the other end of which is connected to the equalizing gas chambers C of the gas compressor A, and an orifice 5 is provided in the pressure pipe line 4.
  • On the upand down-stream sides of the orifice 5 are connected the pressure detecting pipe lines 6 and 7, respectively, and a pressure controller 8 operated in response to the difference of pressure between said pressure detecting pipe lines 6 and 7 is connected to the other ends of the pipe lines 6 and 7, the output of the pressure controller 8 being adapted to regulate the pilot section of the flow rate control valve 3.
  • a check valve 9 may be incorporated in parallel to the orifice 5.
  • the present invention prevents a danger of burning of seal sleeve F in the sealing liquid chambers D due to shortage of sealing liquid supplied into the equalizing gas chambers as often experienced in the conventional sealing devices. Moreover, it is possible with the present invention to freely change the sealing pressure during operation of the gas compressor.
  • Sealing apparatus for a rotary gas compressor having a rotor shaft and an exhaust pipe for the compressed gas.
  • said apparatus comprising equalizing gas chambers, sealing liquid chambers and atmospheric chambers which are arranged adjacent each other in succession along the axis of the rotor shaft, a fixed head tank having a liquid outlet directly connected to said sealing liquid chambers to feed the sealing liquid into said sealing liquid chambers and a gas inlet to receive gas therein to control the pressure of said liquid.
  • a pressure supply pipe line connecting exhaust pipe of said gas,,compressor to the gas inlet of said head tank, a flow rate control valve in the pressure supply pipe line, and

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
US00205918A 1970-12-16 1971-12-08 Sealing apparatus for gas compressor Expired - Lifetime US3797963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45112107A JPS4934211B1 (ja) 1970-12-16 1970-12-16

Publications (1)

Publication Number Publication Date
US3797963A true US3797963A (en) 1974-03-19

Family

ID=14578310

Family Applications (1)

Application Number Title Priority Date Filing Date
US00205918A Expired - Lifetime US3797963A (en) 1970-12-16 1971-12-08 Sealing apparatus for gas compressor

Country Status (2)

Country Link
US (1) US3797963A (ja)
JP (1) JPS4934211B1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909012A (en) * 1973-03-14 1975-09-30 Technip Cie Gas sealing assembly
US4587076A (en) * 1981-05-21 1986-05-06 Framatome & Cie Sealing device for the drive shaft of a high pressure fluid pump
US20110100473A1 (en) * 2004-08-26 2011-05-05 GM Global Technology Operations LLC Sealing System Assembly For High Pressure Fluid Handling Devices
WO2014037149A1 (de) * 2012-09-06 2014-03-13 Siemens Aktiengesellschaft Turbomaschine und verfahren zum betrieb
CN107687420A (zh) * 2017-03-21 2018-02-13 深圳市宝安东江环保技术有限公司 混合密封介质的碳环密封系统和方法
US11067320B2 (en) * 2014-12-26 2021-07-20 Mitsubishi Heavy Industries Compressor Corporation Gas recovery system for compressor, compressor system, and refrigeration cycle system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347751A (en) * 1941-06-02 1944-05-02 Phillips Petroleum Co Pumping system
US2608380A (en) * 1947-12-03 1952-08-26 Union Carbide & Carbon Corp Shaft seal for low-temperature expansion engines
FR1125782A (fr) * 1954-06-19 1956-11-07 Tech Studien Ag Dispositif pour assurer l'étanchéité par joint hydraulique de l'arbre d'une machine rotative pour installations thermiques de force motrice à fluide de travail gazeux
US3532444A (en) * 1967-08-18 1970-10-06 Sulzer Ag Gas pumping apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347751A (en) * 1941-06-02 1944-05-02 Phillips Petroleum Co Pumping system
US2608380A (en) * 1947-12-03 1952-08-26 Union Carbide & Carbon Corp Shaft seal for low-temperature expansion engines
FR1125782A (fr) * 1954-06-19 1956-11-07 Tech Studien Ag Dispositif pour assurer l'étanchéité par joint hydraulique de l'arbre d'une machine rotative pour installations thermiques de force motrice à fluide de travail gazeux
US3532444A (en) * 1967-08-18 1970-10-06 Sulzer Ag Gas pumping apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909012A (en) * 1973-03-14 1975-09-30 Technip Cie Gas sealing assembly
US4587076A (en) * 1981-05-21 1986-05-06 Framatome & Cie Sealing device for the drive shaft of a high pressure fluid pump
US20110100473A1 (en) * 2004-08-26 2011-05-05 GM Global Technology Operations LLC Sealing System Assembly For High Pressure Fluid Handling Devices
US8506266B2 (en) * 2004-08-26 2013-08-13 GM Global Technology Operations LLC Sealing system assembly for high pressure fluid handling devices
WO2014037149A1 (de) * 2012-09-06 2014-03-13 Siemens Aktiengesellschaft Turbomaschine und verfahren zum betrieb
CN104603467A (zh) * 2012-09-06 2015-05-06 西门子公司 涡轮机和用于运行的方法
CN104603467B (zh) * 2012-09-06 2016-06-29 西门子公司 涡轮机和用于运行的方法
US11067320B2 (en) * 2014-12-26 2021-07-20 Mitsubishi Heavy Industries Compressor Corporation Gas recovery system for compressor, compressor system, and refrigeration cycle system
CN107687420A (zh) * 2017-03-21 2018-02-13 深圳市宝安东江环保技术有限公司 混合密封介质的碳环密封系统和方法
CN107687420B (zh) * 2017-03-21 2019-04-19 深圳市宝安东江环保技术有限公司 混合密封介质的碳环密封系统和方法

Also Published As

Publication number Publication date
JPS4934211B1 (ja) 1974-09-12

Similar Documents

Publication Publication Date Title
US2599680A (en) Liquid distributing system
US3591188A (en) Slide ring seal for rotating shafts
US4466778A (en) Ejector device
US3975123A (en) Shaft seals for a screw compressor
US4245844A (en) Apparatus for removing leakage flow of a pressurized medium from gap type seals
US3339574A (en) Pressurizing and drain valve
US3797963A (en) Sealing apparatus for gas compressor
US2781027A (en) Rotary actuating device
US2393691A (en) Pumping unit
US6238180B1 (en) Leak reducing structure in a steam turbine
US3606905A (en) Pressure-maintaining and drainage valve of a gas turbine engine
GB1116292A (en) Seal assembly
US2781726A (en) Reversible fuel pump for oil burners
US2249206A (en) Relief valve
US2944597A (en) Fuel system
KR850001044B1 (ko) 안전작동을 하는 유체정압베아링
US3096785A (en) Pipe line pump
US4608945A (en) Apparatus for recirculating boiler fluid
US2463460A (en) Thrust balanced screw pump
US2662479A (en) Turbine pump or motor
US4545732A (en) Radial piston pump with a star-shaped connecting piece
US813723A (en) Packing.
US2982217A (en) Pump and accumulator unloader assembly
US2879716A (en) Control means for motor driven pumps
US4589821A (en) High-head multistage pump-turbine