DE1013135B - High pressure non-return valve made of forged steel - Google Patents

Description

GERMAN

It is known to manufacture check valves in cast steel. The housing receives an upper one Lid that can be flanged tightly. The housing thus has the shape of a T-piece, the upper nozzle is used as an expansion opening. The space created by the upper nozzle is partly used to accommodate the open flap.

In the case of non-return valves, it is also known to constrict the inlet nozzle so strongly that the disassembly the inner parts can take place through the non-constricted outlet nozzle. The Manufacture of these flaps from a forged block by machining deformation approximately ND 160 economical. With these high-pressure check valves made of forged steel, however, at least A flange can be provided on the outlet side to facilitate dismantling without separating a large one Ensure weld seam.

The use of pressure-sealing lids has been common in valve construction for a long time.

However, there is a desire among the operators of high-pressure systems to have a high-pressure non-return valve to be welded into the pipeline, using forged steel as material and dismantling the flap should be easily possible with the flap housing welded in.

The invention relates to such a check valve suitable for high pressures, which is very economical can be produced. The check valve according to the invention is machined from a forged block in such a rotationally symmetrical manner that the opened There is enough space for the flap in the upper housing space, while the dismantling opening is around 180 ° offset, is mounted in the lower part of the housing, the closure as a pressure-sealing Lid is formed.

With this design, the advantages of the well-known cast steel flap,

1. straight passage (low pressure loss),

2. Possibility of dismantling the inner parts, flap, etc., with the housing installed in the pipeline, using forged steel better suited for high pressures, without making production more expensive and increasing the weight of the material. Furthermore, the non-return valve according to the invention has the advantage that it can be firmly welded into the pipeline, since the interior can be checked and repaired at any time through the dismantling opening located below. The well-known advantage of the high-pressure non-return valve to the pipeline
made of forged steel

Applicant:

Rhenish

Armatures and machine factory

Albert Sempell,
M. Gladbach, Lürriper Str. 1-13

Dipl.-Ing. Alfred Kreuz, M. Gladbach,
has been named as the inventor

rigid housing is still included. It is also due to the external shape of the housing the isolation facilitates and improves.

The drawing shows an embodiment of this non-return valve. With the symmetrical housing block 1 with the welding ends 2 and 3 is the upper interior space to accommodate the opened Flap 4 used. The flap swings around a shaft 5. This shaft can, with the aid of a Stuffing box can be pulled outwards. The lower part of the housing 1 is used to accommodate the quickly releasable pressure-sealing lid closure 6 exploited.

Claims (1)

PATENT CLAIM: High-pressure non-return valve made of forged steel for welding into pipelines, thereby characterized in that the rotationally symmetrical manufactured from a single forging Housing in the upper housing interior has a recess for the open flap (4), while the expansion opening opposite the recess on the lower part of the housing (1) is attached, with its closure designed as a known pressure-sealing cover (6) is. Considered publications:
German patent specifications No. 545 142, 569 386, 927,664; Swiss Patent No. 291 596;
Magazine »BWK« (fuel-heat-power), Vol. 5 (1953), No. 12, pp. 429 to 431. 1 sheet of drawings