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US 8,602,321 B2Granted
Ball valve with reduced erosion behavior
AssigneeRobert Bosch GmbH
InventorsGerhard Girlinger, Frank Traxel, Roland Mitter
Life of this patent
Estimating the term…
Abstract
The invention relates to a ball valve for adjusting a flow of a fluid medium. The ball valve includes a valve seat and a rounded closing element, in particular a valve ball. Furthermore, the ball valve has an inlet with a choke valve and one diffuser arranged between the choke valve and the valve seat. The diffuser includes a constriction on the side facing the valve seat.
Claims15
A ball seat valve for adjusting a flow of a fluid medium, comprising:
- a valve seat;
- a rounded ball-shaped closure member for the valve seat;
- an inlet with a choke valve;
- a diffusor situated between the choke valve and the valve seat, wherein the diffusor has a constriction at its end oriented toward the valve seat, and wherein the constriction has a reduction of a cross section of the inlet, relative to a maximum cross section of the diffusor, of 30 to 70%;
- wherein the diffusor has a cylindrical diffusor section upstream of the constriction and a conical diffuser section upstream of the constriction, and wherein the ball seat valve has a valve body with a parting line that extends through the valve body at a transition between the cylindrical diffusor section and the conical diffusor section to divide the valve body into two units.
2 more elements
A ball seat valve for adjusting a flow of a fluid medium, comprising:
- a valve seat;
- a rounded ball-shaped closure member for the valve seat;
- an inlet with a choke valve;
- a diffusor situated between the choke valve and the valve seat, wherein the diffusor has a constriction at its end oriented toward the valve seat and extending to the valve seat, and wherein the constriction has a length along an inlet axis of between 0% and 50% of a maximum cross section of the diffusor.
1 more element
A ball seat valve for adjusting a flow of a fluid medium, comprising:
- a valve seat;
- a rounded ball-shaped closure member for the valve seat;
- an inlet with a choke valve;
- a diffuser situated between the choke valve and the valve seat, wherein the diffuser has a constriction at its end oriented toward the valve seat, and wherein the constriction has a reduction of a cross section of the inlet, relative to a maximum cross section of the diffuser, of 30% to 70%;
- wherein the constriction has a conical constriction section at its end oriented away from the valve seat, and wherein the constriction also has a cylindrical constriction section between the conical constriction section and the valve seat, the cylindrical constriction section having a length of between 5% and 45% of the total length of the constriction.
2 more elements
Dependencies are inferred from the claim text.