DE2037757A1 - Safety valve with aerodynamic guidance - Google Patents

Description

Safety valve with aerodynamic guidance

The invention relates to a safety valve whose movable Parts are not mechanically guided when opening and closing.

Figure 1 according to the accompanying drawing shows a type of valve z. B. with flange body

Safety valves are known and depending on the pressure, tempe-. rature or medium in different versions and subdivided and manufactured depending on how they work. The opening and closing, d. In other words, the stroke movement of the valve cone is now mainly controlled by a valve spring. Is the force from the operating pressure Under the valve cone greater than the set counterforce from the pretensioned valve spring, the valve opens. On the other hand, is that The force from the operating pressure is less than the force from the valve spring, closes the valve.

It is common practice to guide the moving internal parts mechanically.

Well-known tours are:

1.) 2 guides for the valve spindle in the area of the two spindles

end up.
2.) Guiding of the valve spindle on the one hand in the area at a spindle end and on the other hand on the valve cone by means of conical blades in

the valve seat bushing,

The inner parts, which slide back and forth in their bearings , are inhibited in their freedom of movement by the friction that occurs. The generally occurring friction can also be increased in a disruptive manner by the formation of graphs and transverse forces from the valve spring.

109886 / Ö9A2

This phenomenon, which hinders the puncture of opening and closing is disadvantageous for achieving a desired percentage of small opening and closing times.

The invention according to the accompanying drawings is as follows:

The flange body 1 receives the valve cone 2 with the conical disk 9. The valve spring 3 supported on one side of the flange body 1 finds its counter bearing on the spring plate 4 on the other side. The valve cone 2 and the spring plate 4 are pushed over the valve spindle 5. Both components are also non-displaceable lent connected to it by the thrust bearing 6 and 7 and by means of the force from the upstream W tensioned valve spring 3 during the movement in the direction of the valve stem axis.

Figure 1 also shows that the moving inner parts 2, 3, 4, 5 and 9 are not mechanically guided in the direction of the valve spindle axis.

However, proper functioning of the safety valve is achieved with an aerodynamic guide as follows:

The part of the valve cone 2 in the admission pressure chamber 8 that is blown when the safety valve responds is used to direct the flow on the conical disk 9 symmetrically arranged guide slots A are present, which the non-mechanically guided relative internal parts 2, 3 »4i 5 and 9 keep calm while blowing off.

The perfect function as well as a fast closing time of the valve after blowing out a test certificate «= tests from the Technical University, Aachen, Department of Aerodynamics on Io. 6. 197ο has been certified.

According to Figure 2 is the safety valve with an inlet housing 11 and can also be used with or without discharge housing 12 *

Claims (2)

Patent protection claims Safety valve with aerodynamic guidance according to the enclosed Figure 1, characterized in that the movable inner parts 2, 3, 4, 5 and 9 are not guided by one or more mechanical guides in the direction of the valve spindle axis. 2. Safety valve according to claim 1, characterized in that that the conical disk 9, which is mounted on the valve cone 2 and faces the flow and thus the pre-pressure chamber 8, has guide slots Io has the stabilization of the movable inner parts 2, 3 »4, 5 u. cause. β safety valve according to claim 1 and 2, characterized in that that the valve according to Figure 2 also with an inlet housing 11 and also with an inlet 11 and an outlet housing 12 can be mounted. Here, the valve connections at the inlet and outlet can be provided as flange or threaded connections. 109886/0942