DE7826588U1 - TRIPLE VALVE BLOCK - Google Patents

Description

11 I I I

June 22, 1978

Phönix Armaturen-Werke Bregel GmbH
Prankfurt am Main-Rödelheiia

Dr e if a chvent ilTalo ck

The present innovation relates to a Dreifachventil- j block with three in a common housing in a plane NE \

i valves arranged next to one another, with each of the outer Ab-!

Check valves block the passage between one of the throttle device- i

pressure inlet chamber and a

Dominated in a measuring pressure outlet space and the middle connection i dungsventil dominates a connection path between the two measuring pressure j outlet chambers, which consists of two inclined drilled '

th channels. I.

Such a valve block is known, namely as type 628 j

I of the applicant. This \ Tentilblock serves for the interposition ι

between a throttle valve belonging to a flow measuring system

advises, e.g. B. a built-in in a pipeline measuring orifice j Order, and a flow meter, e.g. B. a from the throttle j

device generated difference of the hot pressure measuring device or j

also a so-called differential pressure transmitter, which uses a bellows arrangement to generate an electrical signal from the differential pressure generated by the throttle device, which is then transmitted to
further processed in the necessary manner.

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By means of the external shut-off valves, the flow meter can be separated from the pipeline and the medium flowing in it will. The measuring pressures reach the measuring pressure inlet chambers from the side of the housing facing the throttle device via channels. namely the sub-valve chambers of the outer shut-off valves.

The term sub-valve space is intended to mean the space below valve-j Designate the seat or the valve closure member in the closed position.

From the overflow chambers of the external shut-off valves, i. H. from the spaces located above their valve seats, ducts go to measuring pressure outlet spaces, their connection openings the opposite side of the housing, d. H. on the flowmeter connection side must lie.

The middle connecting valve is used for control and if necessary to calibrate the flow meter - If at least one | outer shut-off valve is closed and the middle connection j If the valve is opened, the differential pressure between the measuring pressure outlet spaces and the flow meter must disappear Show zero. If he does not, he can be adjusted accordingly will. One of the obliquely drilled connecting pathway

I must therefore establish the connection between the one draft printout |

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> valve manufacture and the passage space of the central IJnterventilraum VerMndungs- and the other obliquely drilled connecting displacement channel i, the connection between the other Meßdruck-;

i outlet space and the over valve space of the middle connection i

νentils. ·

The G-housing of the known valve is made from a solid square block by milling and drilling, with various connecting pieces having to be welded in. Such welds ' [ seams are not or only with great effort with the means of non-destructive material testing (X-ray, ultrasound) |

verifiable. j

In addition, the channels running inside the housing; can only be drilled from the throttle device connection side.!

The measuring pressure outlet spaces are therefore as between the ven! tilen bores running right through the entire housing

formed, from which the connecting channels extend obliquely. The !

I the opening of the measuring pressure outlet chamber, which is not required, j

Hole on the throttle device connection side of the housing must j

be closed by a stopper, which also expands j

I dig is T "id can give rise to malfunctions and deficiencies. J

It is the task of the present innovation. a triple valve j

To create block that has no unnecessary surface drilling with little material and simple production. ι

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To solve this problem is' according to the innovation as the housing Molded body with integrally molded nozzle for channels for Formed measuring pressure inlet space and the connecting path channels, starting from the middle connecting valve, to the the hot pressure outlet spaces located on the flow meter connection side apart.

With such a design, the triple valve block has a pleasing appearance, the material required for production is minimal and, above all, the measuring pressure outlet spaces can be used as short blind bores on the flow meter connection side of the housing, from which both those leading to the relief valve chambers of the outer shut-off valves Channels, as well as the connecting path channels leading to the central connecting valve, are drilled so that the housing surface is not drilled unnecessarily and the associated sealing problems are eliminated. Hs can now also be done by the entire valve train housed within the housing and no longer need to screw threaded sockets for this purpose, which cause additional sealing problems.

If test connections are to be available, it is advisable to if the housing has an integrally molded nozzle for a test connection channel above each measuring pressure inlet nozzle, which in the overvalve chamber of the associated external shut-off valve flows out. These nozzles for the test connection ducts

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can expediently have a cylindrical outer surface with an external thread onto which a closure cap can be screwed is.

The innovation is further explained below by the description of an exemplary embodiment. It shows:

Pig. 1 is a plan view of the housing of a triple valve block according to the invention;

Pig. 2 the section A-A from Pig. 1 with built-in valves; Pig. 3 the section B-B from Pig. 1;

Fig. 4 is a side view of the housing with dashed lines Connection path channels.

The housing 1 is a forged or cast molding with three projections 2 for receiving the valve trains and two Connection piece J, in which channels 4 to the measuring pressure inlet space 5 run.such as connecting pieces 6, in which test connection channels 7 run.

The left-hand side of the housing in the drawings faces a throttle device (not shown) or is connected to such a device

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connected, so that this side is to be called the throttle device connection side.

The channels 4 lead to the "already as measuring pressure entry space designated lower valve chamber 5 below the valve seat 8 of the outer shut-off valves, the chambers of which are designated by 10 and 11 in FIG are, while the test connection channels 7 have connection with the respective overvalve chamber 9.

With the side opposite the throttle device connection side of the housing, this faces a (not shown) flow meter or is connected to such, which is why this Side should be called the flowmeter connection side. In this side there are two measuring pressure outlet spaces 13 and 14 designed in the form of short blind holes of relatively large diameter. From the valve chambers 9 of the shut-off valves 10 and 11 go obliquely bored measuring pressure outlet channels 15 and 16 to the closest measuring pressure outlet space 13 or 14th

A connecting valve, the space of which is designated by 12 in FIG. 1, is located between the shut-off valves. This is used to create a Establish a connection between the measuring pressure outlet spaces 13 and 14. For this purpose go from the measuring pressure outlet spaces 13 and 14 drilled diagonally towards the connecting valve

connection path channels 17 and 18, tfobei the connection path channel 17 the measuring pressure outlet chamber 1 3 with the valve chamber of the Connecting valve connects and the connecting path channel 18 connects the measuring pressure outlet space 14 with the lower valve space of the connecting valve.

The triple valve block is fastened using screws, which are inserted through the holes 19 (Pig. 3).

All three valve chambers 10, 11 and 12 are designed so that Both valves with a stuffing box seal and valves with a bellows seal can be used.

In normal measuring operation, the shut-off valves are open and the connecting valve is closed. The from the throttle device, ζ. Β. one The pressures taken from the measuring orifice arrangement are above the open ones Shut-off valves in the measuring pressure outlet spaces 1 3 and 14 and from there to the flow meter, which shows the differential pressure or an electrical signal for further processing is generated from the differential pressure.

If the flow meter is to be checked or adjusted, at least one of the shut-off valves 10 or 11 must be closed and the connecting valve 12 are opened. then there is no pressure difference between the measuring pressure outlet

clear 13 and 14 and the flow meter should show a zero or provide a zero output signal and can be used accordingly if necessary be readjusted.

When both Sporrventile 10 and 11 are closed, is
the medium flowing in the throttle device is shut off and z. B. assembly or maintenance work can be carried out.

Claims (3)

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• · · 22nd June 1 978 SO HAT ZA N SAYS . Triple valve block with three in a common housing
valves arranged next to one another in one plane, wherein
each of the outer shut-off valves clears the passage between one
from the throttle device connection side acted upon measuring pressure inlet chamber and a measuring pressure outlet chamber dominated and
the middle connecting valve dominates a connection path between the two measuring pressure outlet spaces, which is
composed of two diagonally drilled channels, characterized in that the housing (1) as a molded body with
integrally formed nozzle (3) for channels (4) to the measuring pressure inlet space and the connecting path channels
(17, 18) diverge from the central connecting valve to the measuring pressure outlet spaces (13 »14) located on the flowmeter connection side. j 2. Triple valve block according to claim 1, characterized in that the housing above each measuring ι pressure inlet connection (3) an integrally formed | Nozzle (6) for a test connection channel (7) which j into the over valve chamber (9) of the associated outer valve! (10, 11) opens. j ft « it η 3. Dreifachventirblock according to claim 2, characterized in that the nozzle (6) for the test connection channels (7) have a cylindrical outer surface with an external thread onto which a closure cap can be screwed is.