FR2314534A1 - Hydraulic pressure control device using linked PTFE bellows - for remote control of pressures in cells at extreme temps. - Google Patents

Hydraulic pressure control device using linked PTFE bellows - for remote control of pressures in cells at extreme temps.

Info

Publication number
FR2314534A1
FR2314534A1 FR7518019A FR7518019A FR2314534A1 FR 2314534 A1 FR2314534 A1 FR 2314534A1 FR 7518019 A FR7518019 A FR 7518019A FR 7518019 A FR7518019 A FR 7518019A FR 2314534 A1 FR2314534 A1 FR 2314534A1
Authority
FR
France
Prior art keywords
pressure
bellows
temps
cell
linked
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.)
Granted
Application number
FR7518019A
Other languages
French (fr)
Other versions
FR2314534B1 (en
Inventor
Daniel Tremblay
Andre Boissier
Christiane Ribon
Michel Forestier
Jacques Guitton
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Priority to FR7518019A priority Critical patent/FR2314534A1/en
Publication of FR2314534A1 publication Critical patent/FR2314534A1/en
Application granted granted Critical
Publication of FR2314534B1 publication Critical patent/FR2314534B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
    • G05D23/121—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid characterised by the sensing element
    • G05D23/122—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid characterised by the sensing element using a plurality of sensing elements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/0616—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a bellow
    • G05D16/0619—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a bellow acting directly on the obturator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

Equipment for maintaining the pressure on a liq. maintained under monophase conditions using elevated pressures at high temps., when the liq. in the hot cell is connected via capillary tubes to ancillary devices for monitoring the pressure and adjusting the col. of the system to compensate for any effects tending to vary the pressure. The volume compensation device incorporate a pair of linked bellows filled with an incompressible fluid, one bellows being in a chamber on line with the pressurised capillary, the other bellows being surrounded by a reservoir for an independently adjustable hydraulic pressure source which can be used to vary the relative volumes of the two linked bellows. Esp. suitable for equipment conducting experiments at critical point cell conditions, e.g. 374 degrees C/221 bar pressure for water. The pressure compensation device is remote from the temps. in the cell, allowing use of pressure compensation bellows made of materials such as PTFE which can perform well, but not at the (high or low) temps. maintained in the cell. Heat transfer between the cell and the pressure control system is inhibited by use of capillary tubing for the pressure line link.
FR7518019A 1975-06-10 1975-06-10 Hydraulic pressure control device using linked PTFE bellows - for remote control of pressures in cells at extreme temps. Granted FR2314534A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7518019A FR2314534A1 (en) 1975-06-10 1975-06-10 Hydraulic pressure control device using linked PTFE bellows - for remote control of pressures in cells at extreme temps.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7518019A FR2314534A1 (en) 1975-06-10 1975-06-10 Hydraulic pressure control device using linked PTFE bellows - for remote control of pressures in cells at extreme temps.

Publications (2)

Publication Number Publication Date
FR2314534A1 true FR2314534A1 (en) 1977-01-07
FR2314534B1 FR2314534B1 (en) 1979-02-16

Family

ID=9156248

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518019A Granted FR2314534A1 (en) 1975-06-10 1975-06-10 Hydraulic pressure control device using linked PTFE bellows - for remote control of pressures in cells at extreme temps.

Country Status (1)

Country Link
FR (1) FR2314534A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1432213A (en) * 1965-04-30 1966-03-18 Negretti & Zambra Ltd Improvements to hydraulic accumulators

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1432213A (en) * 1965-04-30 1966-03-18 Negretti & Zambra Ltd Improvements to hydraulic accumulators

Also Published As

Publication number Publication date
FR2314534B1 (en) 1979-02-16

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Legal Events

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