AT25965B - Shut-off valve. - Google Patents
Shut-off valve.Info
- Publication number
- AT25965B AT25965B AT25965DA AT25965B AT 25965 B AT25965 B AT 25965B AT 25965D A AT25965D A AT 25965DA AT 25965 B AT25965 B AT 25965B
- Authority
- AT
- Austria
- Prior art keywords
- valve
- shut
- seat
- angle
- disk
- Prior art date
Links
Landscapes
- Lift Valve (AREA)
Description
<Desc/Clms Page number 1>
EMI1.1
Absperrventile für Dampfleitungen ohne besonderes Dichtungsmaterial, bei denen die Dichtung durch den gegen oben stumpfwinklig oder rechtwinklig zulaufenden Ventilsitz selbst bewirkt wird, der in eine entsprechende Nut im Ventilteller eingreift, sind bekannt. Während bei diesen Ventilen die abdichtenden Metallflächen nur durch den von aussen ausgeübten Druck aufeinander gepresst werden, wird beim Erfindungsgegenstand durch besondere Wahl des Querschnittswinkels fit,) des Ventilsitzes (b) überdies noch eine zusätzliche Abdichtung durch eine von den äusseren Kräften unabhängige Keilwirkung erzielt.
Das Wesen der Erfindung besteht darin, dass bei solchen Ventilen der Querschnittswinkel ( ,) des Ventilsitzes nur so gross gemacht wird, dass beim Niederschrauben des Ventiltellers ein Klemmen des Sitzes in der entsprechenden Nut (a) des Ventiltellers stattfindet, wodurch eine doppelte Abdichtung, nämlich an beiden Seiten des Sitzes (b), entsteht.
Um dies zu erreichen, muss der Winkel kleiner als der doppelte Reibungswinkel des jeweilig verwendeten Materials sein (für Bronze z. Il. kleiner als zirka 220).
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
EMI1.1
Shut-off valves for steam lines without special sealing material, in which the seal is effected by the valve seat itself which tapers at an obtuse angle or at right angles towards the top and which engages in a corresponding groove in the valve disk, are known. While in these valves the sealing metal surfaces are only pressed against one another by the pressure exerted from the outside, in the subject matter of the invention an additional seal is achieved through a wedge effect independent of the external forces through a special selection of the cross-sectional angle fit,) of the valve seat (b).
The essence of the invention is that in such valves, the cross-sectional angle (,) of the valve seat is only made so large that when the valve disk is screwed down, the seat jams in the corresponding groove (a) of the valve disk, creating a double seal, namely on both sides of the seat (b).
In order to achieve this, the angle must be smaller than twice the angle of friction of the respective material used (for bronze z. Il. Smaller than about 220).
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT25965T | 1905-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT25965B true AT25965B (en) | 1906-10-10 |
Family
ID=3537117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT25965D AT25965B (en) | 1905-11-29 | 1905-11-29 | Shut-off valve. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT25965B (en) |
-
1905
- 1905-11-29 AT AT25965D patent/AT25965B/en active
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