DE202018105082U1 - ball valve - Google Patents

Abstract

A ball valve (10) comprising a housing and at least three fluidic ports (12, 14, 16), namely an inlet port (12), a first outlet port (14) and a second outlet port (16), the first outlet port (14) and second port (16) via a piggable connector (18) are connected, wherein the inlet port (12) at an angle in the piggable connector (18), wherein in this transition between the inlet port (12) and the connector (18) to a a shut-off element axis of rotation (D) rotatable shut-off element (20) is arranged, characterized in that the shut-off element (20) is formed in its sealing region by a spherical segment (26) having a central axis (KM), which is parallel to Absperrelementdrehachse (D) and parallel to the base of the ball segment (26), wherein the ball central axis (KM) and the Absperrelementdrehachse (D) are arranged spaced from each other.

Description

The invention relates to a ball valve according to the preamble of claim 1.

The DE 93 09 917 U1 discloses a fitting for a piggable pipeline. The fitting comprises a ball valve having a first input port and two output ports, wherein a piggable connector is provided between the two output ports. In the transition from the input port into the connecting piece between the output ports a rotatable shut-off element is provided which has a recess in its intended to seal the transition spherical segment surface, which is in the closed position of the ball valve in the connector, so that even in the closed position the connector is piggable.

It is an object of the invention to provide a piggable ball valve, in which a nucleation is reduced in the ball valve.

In a known manner, a piggable ball valve comprises at least three fluidic connections, namely an inlet port, a first outlet port and a second outlet port, wherein the first outlet port and the second port are connected via a piggable connector.

The inlet port opens at an angle in the piggable connector, wherein further in the transition between the inlet and the connector is a rotatable about a Absperrelementdrehachse shut-off element is arranged.

According to the invention, it is provided that the shut-off element is formed in its sealing area by a spherical segment which has a central axis of the ball parallel to the shut-off element axis of rotation and parallel to the base of the ball segment, the central axis of the ball and the shut-off element axis of rotation being parallel to each other and spaced from one another.

This has the advantage that the shut-off element is spaced in the open position of the housing assembly, so that the shut-off is completely washed around, as there is no dead volume between the housing and the shut-off.

The base of the ball segment does not have to be physically present, but can be so excepted that results in a hollow ball-like design.

According to one embodiment of the invention can be provided that the housing in the transition from the inlet port to the connector in the sealing region has a part-spherical recess, wherein the ball center of the recess corresponds to the center of the ball segment of the shut-off. In this way, an excellent sealing function is ensured and still allows a flushing of the shutoff in the open position.

Preferably, the ball segment of the shutoff in its ball segment having a recess which is adapted in its contour to the contour of the wall of the piggable connector, so that when the ball valve is closed, a continuous wall is formed on the connector, so that a reliable use of a pig in This connector can be guaranteed.

In particular, the angle between the inlet port and the connecting piece, which runs in particular in a straight line, is 90 °.

The shut-off element is preferably arranged so that the Absperrelementdrehachse intersects the central axis of the input terminal. This ensures a particularly favorable flow behavior and ensures the distance to the housing in the open position. The ball central axis is in the closed position preferably in the transverse direction to the flow direction spaced from the Absperrelementdrehachse.

Preferably, the distance from the ball central axis to Absperrelementdrehachse is between 2% and 15% of the spherical radius of the ball segment.

Further advantages, features and possible applications of the present invention will become apparent from the following description in conjunction with the embodiments illustrated in the drawings.

• 1a eine Draufsicht auf einen erfindungsgemäßen Kugelhahn;
• 1b eine Seitenansicht eines erfindungsgemäßen Kugelhahns;
• 2 eine Schnittansicht B-B des erfindungsgemäßen Kugelhahns gemäß 1a;
• 3 eine Schnittansicht E-E des erfindungsgemäßen Kugelhahns gemäß 1b;
• 4a Detailansicht des Ausschnitts A gemäß 3 in Geschlossen-Stellung;
• 4b Detailansicht des Ausschnitts A gemäß 3 in einer ersten teilweise geöffneten Stellung;
• 4c Detailansicht des Ausschnitts A gemäß 3 in einer zweiten teilweise geöffneten Stellung, und;
• 4d Detailansicht des Ausschnitts A gemäß 3 in geöffneter Stellung.

In the description, the claims, and the drawing, the terms and associated reference numerals used in the list of reference numerals below are used. In the drawing:

• 1a a plan view of a ball valve according to the invention;
• 1b a side view of a ball valve according to the invention;
• 2 a sectional view BB of the ball valve according to the invention according to 1a ;
• 3 a sectional view EE of the ball valve according to the invention according to 1b ;
• 4a Detail view of the detail A according to 3 in closed position;
• 4b Detail view of the detail A according to 3 in a first partially open position;
• 4c Detail view of the detail A according to 3 in a second partially open position, and;
• 4d Detail view of the detail A according to 3 in open position.

1a shows a plan view of the ball valve according to the invention 10 with an inlet connection 12 , a first outlet port 14 and a second outlet port 16 , where the two outlet ports 14 . 16 via a tube-like piggable connector 18 are connected. Furthermore, the location of the shut-off element 20 in the transition from the inlet connection 12 into the piggable connector 18 shown. The embodiment of the shut-off element 20 is described in more detail in the following figures.

1b shows a side view of a ball valve according to the invention 10 with an actuating shaft 22 with which the shut-off element 20 in a rotational movement about the Absperrelementdrehachse D is operable.

2 shows a sectional view BB of the ball valve 10 in closed position, with the axis of rotation D is shown. Furthermore, the groove-shaped recess 24 in the front area of the ball segment 26 to recognize, which is designed such that when the shut-off element 20 the contour of the wall of the connector 18 completes, making the connector 18 with closed shut-off 20 is pigmile.

3 shows a sectional view EE of 1b in a half-open position. The sphere segment 26 gives the passage to the connector 18 partly free. In 3 is indicated that the Absperrelementdrehachse D and the ball central axis KM parallel to the shut-off element axis of rotation D lies, are spaced, so that the shut-off 20 with its the sealing edge / sealing surface forming spherical segment 26 is moved eccentrically to the axis of rotation. This results in a movement behavior of the ball segment 26 relative to the wall in the housing, as in the 4a to 4d , which is an enlarged view of the detail A shown in different valve positions.

4a shows the shut-off element 20 in closed position. The shut-off element axis of rotation D of the shutoff element 20 is, viewed transversely to the flow direction F, spaced from the central axis of the ball KM of the ball segment 26 , The distance here is about 6% of the ball radius of the ball segment 26 ,

4a to 4d show how with increasing opening angle the ball center axis KM of the ball segment 26 in their distance, always farther the midline M of the input terminal 12 that the shut-off element axis of rotation D the shutoff cuts, approaches. This will change the distance of the ball segment 26 raised to the wall, so with open ball valve, as shown in 4d is shown, the shut-off 20 is completely lapped. This creates no dead volume between the wall of the valve and the ball segment 26 in which germs can form.

LIST OF REFERENCE NUMBERS

10

ball valve

12

inlet port

14

first outlet port

16

second outlet port

18

joint

20

shut-off

22

actuating shaft

24

recess

26

ball segment

D

Absperrelementdrehachse

KM

Ball central axis

M

center line

A

neckline

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 9309917 U1 [0002]

Claims (6)

A ball valve (10) comprising a housing and at least three fluidic ports (12, 14, 16), namely an inlet port (12), a first outlet port (14) and a second outlet port (16), the first outlet port (14) and second port (16) via a piggable connector (18) are connected, wherein the inlet port (12) at an angle in the piggable connector (18), wherein in this transition between the inlet port (12) and the connector (18) to a a shut-off element axis of rotation (D) rotatable shut-off element (20) is arranged, characterized in that the shut-off element (20) is formed in its sealing region by a spherical segment (26) having a central axis (KM), which is parallel to Absperrelementdrehachse (D) and parallel to the base of the ball segment (26), wherein the ball central axis (KM) and the Absperrelementdrehachse (D) are arranged spaced from each other. Ball valve after Claim 1 , characterized in that the housing in the transition from inlet port (12) to the connector (18) has a part spherical in its sealing area recess (24), wherein the ball center of the recess corresponds to the center of the ball segment (26) of the shut-off element (20). Ball valve after Claim 1 or 2 , characterized in that the ball segment (26) of the shut-off element (20) has a recess (24) which is adapted to the contour of the wall of the piggable connecting piece (18). Ball valve after one of the Claims 1 to 3 , characterized in that the angle between the inlet port and connector is 90 °. Ball valve according to one of the preceding claims, characterized in that the ball central axis (KM) in the closed position, transversely, in particular orthogonal to the flow direction, to Absperrelementdrehachse (D) is spaced. Ball valve according to one of the preceding claims, characterized in that the distance from the central axis of the ball (KM) to Absperrelementdrehachse (D) is between 2% and 15% of the spherical radius of the ball segment (26).

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