EP0096366B1 - 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

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Publication number
EP0096366B1
EP0096366B1 EP83105457A EP83105457A EP0096366B1 EP 0096366 B1 EP0096366 B1 EP 0096366B1 EP 83105457 A EP83105457 A EP 83105457A EP 83105457 A EP83105457 A EP 83105457A EP 0096366 B1 EP0096366 B1 EP 0096366B1
Authority
EP
European Patent Office
Prior art keywords
ball
spring
spindle
contact
bushing
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
EP83105457A
Other languages
German (de)
English (en)
Other versions
EP0096366A3 (en
EP0096366A2 (fr
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 Armaturen fur Industrie- und Nuklearanlagen GmbH
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 Armaturen fur Industrie- und Nuklearanlagen GmbH, Chemat GmbH Armaturen fuer Industrie und Nuklearanlagen filed Critical Chemat Armaturen fur Industrie- und Nuklearanlagen GmbH
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 a valve ball and a spindle and a second contact element between the spindle and a 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. Even during maintenance work on the housing of the ball valves, the contact spring can be damaged unnoticed, so that its 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 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 as well as the sleeves can be made of stainless steel and are therefore ideal when using 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 dissipation by means of two metal pins or a metal pin and a spring-loaded ball, the solution to the underlying is thus in both cases in the ball valve according to the invention Task reliably guaranteed.
  • 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 bore 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.

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  • Taps Or Cocks (AREA)

Claims (7)

1. Dispositif pour la dérivation de charges électrostatiques pour robinets à boisseau sphérique au moyen d'un élément de contact entre une bille de soupape (2) et une broche (3) ainsi que par un deuxième élément de contact entre la broche (3) et une douille ou un écrou presse-étoupe (4),
caractérisé en ce que
au moins l'élément de contact (5) entre la bille (2) et la broche (3) consiste en deux pointes métalliques (12,13) qui sont guidées dans une douille (14) et qui sont pressées au moyen d'un ressort (15) disposé entre les deux pointes métalliques contre la bille (2) et la broche (3) de sorte que le ressort n'est pas exposé à des fluides aggressifs.
2. Dispositif selon la revendication 1,
caractérisé en ce que
le deuxième élément de contact (6) consiste en deux pointes métalliques (12,13) qui sont guidées dans und douille (14) et qui sont pressées vers l'extérieur par un ressort (15) disposé entre les deux pointes métalliques de sorte que le ressort n'est pas exposé à des fluides aggressifs.
3. Dispositif selon les revendications 1 ou 2,
caractérisé en ce que
les deux pointes métalliques (12, 13) présentent chacune à leur extrémité intérieure un épaulement (16, 17) et sont tenues dans la douille (14) par un collet rabattu vers l'intérieur (18, 19) se trouvant aux deux extrémités de la douille (14).
4. Dispositif selon la revendication 1
caractérisé en ce que
le deuxième élément de contact (6) se trouvant dans la douille ou l'écrou presse-étoupe (4) consiste en une bille de contact (20) qui est guidée dans une douille (21) et est pressée vers l'extérieur par un ressort (23).
5. Dispositif selon la revendication 4
caractérisé en ce que
la bille de contact (20) possède un diamètre supérieur à l'ouverture de la douille (21) formée par un collet rabattu (22) par lequel la bille de contact (20) est tenue dans la douille (21).
6. Dispositif selon l'une des revendications 1 à 5,
caractérisé en ce que
la douille (14) pour le guidage des pointes de métal est en métal.
7. Dispositif selon l'une des revendications 4 ou 5
caractérisé en ce que
la douille (21) pour le guidage de la bille de contact est en métal.
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 EP0096366A2 (fr) 1983-12-21
EP0096366A3 EP0096366A3 (en) 1985-06-12
EP0096366B1 true 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)

Families Citing this family (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
ITBO20020358A1 (it) * 2002-06-07 2003-12-09 Magneti Marelli Powertrain Spa Valvola a farfalla per un motore a combustione interna con dissipatore di cariche elettrostatiche e relativo attuatore
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
DE102017119205A1 (de) 2017-08-22 2019-02-28 Samson Ag Stellventil
DE202017105035U1 (de) 2017-08-22 2018-11-23 Samson Ag Stellventil
DE202018105866U1 (de) 2018-10-12 2018-11-15 Samson Ag Ventil

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

Also Published As

Publication number Publication date
EP0096366A3 (en) 1985-06-12
DE3375354D1 (en) 1988-02-18
EP0096366A2 (fr) 1983-12-21

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