GB1409461A - Close clearance viscous fluid seal system - Google Patents

Close clearance viscous fluid seal system

Info

Publication number
GB1409461A
GB1409461A GB1663873A GB1663873A GB1409461A GB 1409461 A GB1409461 A GB 1409461A GB 1663873 A GB1663873 A GB 1663873A GB 1663873 A GB1663873 A GB 1663873A GB 1409461 A GB1409461 A GB 1409461A
Authority
GB
United Kingdom
Prior art keywords
chamber
pump
zone
pressure
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
Application number
GB1663873A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Priority to GB1663873A priority Critical patent/GB1409461A/en
Publication of GB1409461A publication Critical patent/GB1409461A/en
Application status is Expired legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162Adaptations of cylinders
    • F04B53/164Stoffing boxes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/40Sealings between relatively-moving surfaces by means of fluid
    • F16J15/406Sealings between relatively-moving surfaces by means of fluid by at least one pump

Abstract

1409461 Pump plunger seals UNION CARBIDE CORP 6 April 1973 16638/73 Heading F2B The plunger 104, Fig. 1, of a high pressure pump 101 is sealed by means comprising circulating sealing liquid under pressure to an annular clearance seal zone 110 surrounding the plunger, the zone being sealingly separated from the pumped liquid chamber 103 by a floating piston whereby the sealing liquid is subjected to the pressure of the pumped liquid in the chamber 103. The piston is sealed in a chamber in the pump body 102 by seals 108 and 109 and divides the chamber into two parts 106a and 106b communicating respectively with the pump chamber 103 and via the seal zone 110 with a leakage chamber 111 sealed by seals 112 and connected by a conduit 113 with a sealing liquid reservoir 114. A pump 115 pumps liquid from the reservoir to the zone 110 at a constant pressure controlled by a regulator 119 to be slightly above the minimum pressure of the liquid in the chamber 103 during the suction stroke. In operation, during the compression stroke the pressure of the pumped liquid moves the piston 107 to the left to impose the same pressure on the sealing liquid in the chamber part 106b and in the zone 110, and during the suction stroke, the piston is returned to the right by the pressure of sealing liquid supplied by the pump 115. A vent passage 120 and valve 121 may be fitted. In a modification, Fig. 2 (not shown), the piston (207) is located in a bore in the pump body (202) and the seal chamber parts (206a and 206b) communicate with the pump chamber (203) and seal zone (214) through passages (205, 213) in the body. In a further modification, Fig. 3 (not shown), sealing liquid is supplied to the seal zone (320) through a passage (316) and a spring-loaded valve (315) in the plunger (304). In the embodiment shown in Fig. 4, the seal zone 416 is separated from the pump chamber 403 by a seal ring 419 and the floating piston 407 is housed in a chamber 406 external to the pump body 402 and connected to the chamber 403 and zone 416 by conduits 405 and 414, 417 respectively.
GB1663873A 1973-04-06 1973-04-06 Close clearance viscous fluid seal system Expired GB1409461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1663873A GB1409461A (en) 1973-04-06 1973-04-06 Close clearance viscous fluid seal system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1663873A GB1409461A (en) 1973-04-06 1973-04-06 Close clearance viscous fluid seal system

Publications (1)

Publication Number Publication Date
GB1409461A true GB1409461A (en) 1975-10-08

Family

ID=10080924

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1663873A Expired GB1409461A (en) 1973-04-06 1973-04-06 Close clearance viscous fluid seal system

Country Status (1)

Country Link
GB (1) GB1409461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130235A2 (en) * 1983-07-01 1985-01-09 Wakatsuki Kikai Kabushiki Kaisha Apparatus for producing ultrahigh pressure water jet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130235A2 (en) * 1983-07-01 1985-01-09 Wakatsuki Kikai Kabushiki Kaisha Apparatus for producing ultrahigh pressure water jet
EP0304964A2 (en) * 1983-07-01 1989-03-01 Shibuya Kogyo Co., Ltd Apparatus for producing ultrahigh pressure water jet
EP0304964A3 (en) * 1983-07-01 1989-05-17 Wakatsuki Kikai Kabushiki Kaisha Apparatus for producing ultrahigh pressure water jet
EP0130235B1 (en) * 1983-07-01 1990-04-04 Wakatsuki Kikai Kabushiki Kaisha Apparatus for producing ultrahigh pressure water jet

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee