EP0096366A2 - Dispositif de dérivation de charges électrostatiques pour robinet à boisseau sphérique - Google Patents

Dispositif de dérivation de charges électrostatiques pour robinet à boisseau sphérique Download PDF

Info

Publication number
EP0096366A2
EP0096366A2 EP83105457A EP83105457A EP0096366A2 EP 0096366 A2 EP0096366 A2 EP 0096366A2 EP 83105457 A EP83105457 A EP 83105457A EP 83105457 A EP83105457 A EP 83105457A EP 0096366 A2 EP0096366 A2 EP 0096366A2
Authority
EP
European Patent Office
Prior art keywords
ball
spindle
sleeve
contact
spring
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
EP83105457A
Other languages
German (de)
English (en)
Other versions
EP0096366B1 (fr
EP0096366A3 (en
Inventor
Hans Braig
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.)
Chemat GmbH Armaturen fuer Industrie und Nuklearanlagen
Original Assignee
Chemat GmbH Armaturen fuer Industrie und Nuklearanlagen
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 claimed from DE19823221258 external-priority patent/DE3221258C1/de
Application filed by Chemat GmbH Armaturen fuer Industrie und Nuklearanlagen filed Critical Chemat GmbH Armaturen fuer Industrie und Nuklearanlagen
Priority to AT83105457T priority Critical patent/ATE32010T1/de
Publication of EP0096366A2 publication Critical patent/EP0096366A2/fr
Publication of EP0096366A3 publication Critical patent/EP0096366A3/de
Application granted granted Critical
Publication of EP0096366B1 publication Critical patent/EP0096366B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/02—Carrying-off electrostatic charges by means of earthing connections

Definitions

  • the invention relates to a device for electrostatic discharge in ball valves by means of a contact element between the ball and the spindle and a contact element between the spindle and the stuffing box or nut.
  • the ball must be grounded via the spindle in ball valves used in the chemical industry. This is necessary because the ball can become electrostatically charged and explosions can occur when using explosive or other dangerous media.
  • the slip rings used lose tension very quickly, so that a lifting, even if only very slight, from the spindle is detected.
  • the contact spring can be damaged unnoticed, so that this their functionality is restricted.
  • the object of the invention is to provide inexpensive devices for electrostatic discharge in a ball valve of the type mentioned, which are no longer exposed to external influences and influences of the media used.
  • the devices must be easy to install and be protected from damage during maintenance work.
  • the contact pins used are about 90% cheaper than the usual spring arrangements. The reason for this is that the contact pins for the watch industry are manufactured in very large numbers. These are used as holding pins for bracelets on wristwatches.
  • the contact pins are very easy to use and are used between the ball and the spindle. It is no longer necessary to carry easily damaged parts with you during maintenance work, just the insensitive pins.
  • the spring Due to the coating of the pens, the spring is no longer exposed to the often very aggressive media found in the chemical industry. Even during maintenance work, damage to the contact pins can no longer occur.
  • the pins and the sleeves can be made of stainless steel and are therefore ideal for use of aggressive media. It has also been shown that the time required for attaching the contact pins is considerably less than when using the previously customary contact arrangements. In addition to the advantage of the lower purchase price, there is also time savings during assembly.
  • the sprung ball is also a part that is found very often in industry and is therefore available on the market at very low cost. It has been found to be advantageous that the sleeve has a thread on the outside for screwing into the part surrounding the spindle. A slot for engaging a screwdriver is made in the end of the sleeve opposite the contact ball.
  • the sleeve can be made of stainless steel.
  • the pin mentioned above can also be attached. Due to the electrostatic discharge by means of two metal pins or a metal pin and a spring-loaded ball, the solution to the underlying task is reliably guaranteed in both cases with the ball valve according to the invention.
  • the embodiment working with a pin and a ball ensures smooth operation and reliable wear-free operation while maintaining reliable contact.
  • the housing 1 of the ball valve there is a round opening in the middle on the upper side.
  • a spindle 3 which is surrounded by a stuffing box or nut 4, passes through this opening.
  • the ball has a square recess in the upper part, in which a pin 21 engages. This pin is at the lower end of the spindle. A hole is provided in this pin which receives the contact pin 5.
  • the contact pin consists of a sleeve 14, preferably made of metal, two metal pins 12, 13 and a spring 15.
  • the sleeve has an inwardly directed flanged edge 18, 19 on both sides.
  • a spring is arranged between the two metal pins and tends to push the two metal pins away from one another.
  • the two metal pins each have a shoulder 16, 17 at their inner ends. Thus, the two metal pins cannot be pressed out of the sleeve by the spring force.
  • the spindle 3 is surrounded by a stuffing box or nut 4. This stuffing box or nut is firmly connected to the housing. As a result, the spindle is firmly guided in the opening of the housing.
  • a hole is provided in the stuffing box or nut, which has a thread and has the same diameter as the bore which receives the contact pin 5. This bore in the stuffing box or nut receives the sprung ball 6.
  • the spring-loaded ball 6 is seated in a sleeve 21, preferably made of metal, which is closed at one end and has an opening at the other end, which has an inwardly directed flanged edge 22.
  • a sleeve 21 preferably made of metal, which is closed at one end and has an opening at the other end, which has an inwardly directed flanged edge 22.
  • the spring 23 being supported at one end against the closed sleeve, with the other end pushing the ball 20 outwards.
  • the ball 20 has a larger diameter than the opening formed by the flange 22. Thus, the ball 20 cannot be pressed out of the sleeve 21 by the spring force.
  • a pin as shown in FIG. 2 can also be used between the spindle and the stuffing box or nut.

Landscapes

  • Taps Or Cocks (AREA)
EP83105457A 1982-06-04 1983-06-01 Dispositif de dérivation de charges électrostatiques pour robinet à boisseau sphérique Expired EP0096366B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83105457T ATE32010T1 (de) 1982-06-04 1983-06-01 Vorrichtung zur elektrostatischen ableitung bei kugelhaehnen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3221258 1982-06-04
DE19823221258 DE3221258C1 (de) 1982-06-04 1982-06-04 Kugelhahn mit Vorrichtungen zur elektrostatischen Ableitung zum geerdeten Gehäuse
DE8311255U 1983-04-15
DE8311255 1983-04-15

Publications (3)

Publication Number Publication Date
EP0096366A2 true EP0096366A2 (fr) 1983-12-21
EP0096366A3 EP0096366A3 (en) 1985-06-12
EP0096366B1 EP0096366B1 (fr) 1988-01-13

Family

ID=25802271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105457A Expired EP0096366B1 (fr) 1982-06-04 1983-06-01 Dispositif de dérivation de charges électrostatiques pour robinet à boisseau sphérique

Country Status (2)

Country Link
EP (1) EP0096366B1 (fr)
DE (1) DE3375354D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636513A1 (fr) * 1988-09-20 1990-03-23 Maurel Jacques Pietement antistatique de siege de bureau
EP1369566A1 (fr) * 2002-06-07 2003-12-10 Magneti Marelli Powertrain S.p.A. Soupape à papillon pour un moteur de combustion interne avec dissipation de charges électrostatiques et actionneur
CN103307303A (zh) * 2013-07-01 2013-09-18 自贡信赖泵阀制造有限公司 三位清管型三通球阀
DE202018105866U1 (de) 2018-10-12 2018-11-15 Samson Ag Ventil
DE202017105035U1 (de) 2017-08-22 2018-11-23 Samson Ag Stellventil
US11313890B2 (en) 2017-08-22 2022-04-26 Samsoon Ag Control valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR545514A (fr) * 1921-10-20 1922-10-13 Prise de courant électrique à rotule
GB381354A (en) * 1931-10-26 1932-10-06 Macintosh Cable Company Ltd An improved electrical joint, coupling or connection
FR2398241A1 (fr) * 1977-07-21 1979-02-16 Gachot Jean Robinet a boule de securite

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636513A1 (fr) * 1988-09-20 1990-03-23 Maurel Jacques Pietement antistatique de siege de bureau
EP1369566A1 (fr) * 2002-06-07 2003-12-10 Magneti Marelli Powertrain S.p.A. Soupape à papillon pour un moteur de combustion interne avec dissipation de charges électrostatiques et actionneur
US6845963B2 (en) 2002-06-07 2005-01-25 Magneti Marelli Powertrain S.P.A. Butterfly valve for an internal combustion engine with dissipation of electrostatic charges and a relative actuator
CN103307303A (zh) * 2013-07-01 2013-09-18 自贡信赖泵阀制造有限公司 三位清管型三通球阀
DE202017105035U1 (de) 2017-08-22 2018-11-23 Samson Ag Stellventil
US11293563B2 (en) 2017-08-22 2022-04-05 Samson Ag Control valve
US11313890B2 (en) 2017-08-22 2022-04-26 Samsoon Ag Control valve
DE202018105866U1 (de) 2018-10-12 2018-11-15 Samson Ag Ventil

Also Published As

Publication number Publication date
EP0096366B1 (fr) 1988-01-13
EP0096366A3 (en) 1985-06-12
DE3375354D1 (en) 1988-02-18

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