WO2017220723A2

WO2017220723A2 - Flange kit, fitting, and filling installation

Info

Publication number: WO2017220723A2
Application number: PCT/EP2017/065393
Authority: WO
Inventors: Florian Justl; Willi Wiedenmann; Torsten Runge; Johann Justl
Original assignee: Krones Ag
Priority date: 2016-06-22
Filing date: 2017-06-22
Publication date: 2017-12-28
Also published as: DE102016211116A1; WO2017220723A3

Abstract

The invention relates to a flange kit (B) comprising first, second and third flange types (A, B, C), each type consisting of a flange plate (1) with at least one contact surface (6, 6a-6d) on the front face (2) and a pipe connection (3) on the rear face, the first flange type (A) having a level continuous contact surface (6), the second flange type (B) having at least one first centring shoulder (8) and a sealing groove (10) along the inner diameter, and the third flange type (C) having at least one second centring shoulder (11) that fits the first centring shoulder (8). In said kit, at least the second flange type (B) can be combined selectively in a modular connection (V1, V2) with either the first or the third flange type (A, C). A fitting (R) has at least one housing flange (18, 19) with a front-face contour matching that of the second flange type (B), the housing flange being combinable with the first flange type (A) or the third flange type (C). A filling installation contains flange connections, each of which comprises at least one of the flange types (A, B, C).

Description

Flange kit and fitting and filling system

The invention relates to a flanges kit according to claim 1, and a fitting according to claim 14 and a filling plant according to claim 17.

Flange connections of two, for example, screwed together or fixed with a union nut or clamped with a clamp flanges are well-known machine elements and form detachable separation points in pipes, fittings or sensors. In bottling plants such flange connections are generally classified as unhygienic, hygienic or aseptic. "Unhygienic" means, for example, that between the mutually clamped flanges deposits can arise, which can not be or not reliably eliminated by a cleaning. "Hygienic" means that the flange connection is sealed to the outside and has no dead spaces inside, in which removable deposits can not settle by cleaning. The two flanges are not positively centered on each other transversely to the flange axis. "Aseptic" means that the flange connection has no dead spaces inside, is sealed to the outside, and the two flanges center each other transversely to the flange axis, e.g. As a rule, two mating flanges are made for each type of flange connection, the flanges for an unhygienic or a hygienic or an aseptic flange are not mutually combinable. This means increased production costs, for example if several hygienic and aseptic flange connections are required in filling systems depending on demand.

A hygienic flange connection offers the important advantage of being radially separable after loosening of connecting elements or clamping screws, which simplifies maintenance or replacement work in installations, because axial detachment of the flanges and other components installed in the filling installation is eliminated. An aseptic flange connection, in contrast, offers the advantage of the aseptic nature, as is often required, for example, in bottling plants to meet certain requirements, but requires for separation for maintenance or replacement axial displacement, for which optionally further components installed in the filling system must be solved.

The invention has for its object to provide a flanges kit for the production of different, for example, both hygienic and aseptic, flange, to design a fitting so that it can be combined either in a hygienic or aseptic connection with the flanges kit, and a To create filling plant, in which different flange connections are modularly produced with reduced manufacturing costs.

The stated object is achieved with the features of claim 1, of claim 14 and of claim 17.

Since in the flan kit the second flange type can be combined optionally with the first flange type or the third flange type, with only three flange types two different, e.g. produce both hygienic and aseptic, flange connections.

The fitting is designed with its housing flanges so that it can be mounted in a connection with the aid of either the first or the third flanges of the flanges kit, without the need for a specially tailored for the fitting flange.

In the bottling plant, the technical complexity of manufacturing different flange connections is reduced since, with the three flange types of the flange kit, either hygienic or aseptic flange connections can be set up.

In an expedient embodiment, the first or the third flange type of the flanges kit is optionally modular in combination with a formed with the front contour of the second flange flange housing flange of a valve, preferably an intermediate clamping disc valve combined. By manufacturing technically simple design of the housing flange a specially for this connection otherwise required flange is saved.

Another field of use of at least the second flange type is given by the fact that two second types of flanges can be combined in a hygienic connection, including a further element such as a diaphragm.

The second type of flange of the flanges kit can be very easily combined with dome lids or block flanges, with or without centering, which allows direct connection of disc valves or piping, e.g. allowed on tanks. In addition, the second flange type can in principle be attached to various components for the production of hygienic or aseptic flange connections, such as expansion compensators, check valves, and the like.

In an expedient embodiment of the flanges kit, the first centering lug of the second flange type is limited either by an annular groove in the front side or by a first annular shoulder which springs back from the front side and has the second centering Approach of the third flange either on the front projecting, can be fitted into the annular groove or on the front projecting, on the first annular shoulder matching second annular shoulder, wherein, preferably, the extensions of the annular groove, the annular bead and the annular shoulders in the direction of the flange are each about the same. For example, the annular shoulders can be cylindrical or, for better centering, also mutually conical. For example, with a nominal diameter of about 66 mm, the extension can be about 1.5 mm. All flange types of the flanges kit are easy to manufacture.

Suitably, the first and second centering lugs are placed at radial distances from the inner diameter and the seal groove and the outer periphery of the flange plate. In the annular groove or seal groove molded gaskets such as O-ring-shaped, T-shaped, triangular, square-shaped seals can be used.

The front side of the flange plate and the respective contact surface can be perpendicular to the flange axis.

In a further embodiment, in the contact surface of at least the second flange type, a leakage detection groove extends from the sealing groove, for example, approximately radially to the first centering shoulder. In this way, a simple monitoring of the sealing effect of a seal installed in the seal groove is possible.

Incidentally, the annular groove and the annular bead may have approximately triangular or quadrangular cross-section, wherein it is important that the annular groove and the annular bead ensure proper centering transversely to the flange axis.

The flange plate of each flange type among the flange types for a screw connection may have aligned through holes for tightening screws. Alternatively, the flange can be clamped in accordance with DIN 1 1864-1 with groove-union nuts or clamped according to DIN 1 1864-3.

The flanges kit is preferably used for a nominal diameter range between about 10 mm to about 150 mm.

In an expedient embodiment of the fitting may be provided in the clamping surface of the housing flange at least one leakage Erkennungsnut either forms with the contact surface of the first flange or the contact surface of the third flange type an outwardly open leakage detection channel, which provides a simple monitoring of tightness in allows the connection. Suitably, the first and second centering lugs of the second and third flange types are each concentric to the flange axis.

In the plane of contact of the first flange type, a sealing annular groove may be arranged, such as on the inner bore of the first flange type, e.g. To form a sealing zone with an inserted seal with the second flange type or a housing flange of a valve.

Instead of the flange axis concentric first and second centering lugs could have the necessary centering of at least one, better two or more centering pins in the front of a flange and at least one, more preferably two or more, with respect to the flange on the centering alignable centering pin insertion holes in the front of the other flange type, which form, so to speak, first and second centering approaches. The centering pins can be used as required. This centering principle can also be used with a connection of the second flange type with the first flange type or the third flange type with the housing flange of a valve.

In the embodiment according to claim 6, a sealing ring groove could be provided in the contact surface of the third flange type.

Reference to the drawings, embodiments of the subject invention will be explained. Show it:

1 shows a first embodiment of a flanges kit of first, second and third, mutually mating flange types, each in an axial section,

2 shows another embodiment of a flanges kit,

3 shows another embodiment of a flanges kit,

4 shows a connection of a combination of a second flange type and a first flange type,

5 shows a connection of a combination of a second flange type and a third flange type,

6 shows a connection of a fitting with two first flange types, FIG. 7 shows a connection of a fitting with two third flange types, FIG. Fig. 8 shows a detail of Fig. 6, and

Fig. 9 shows a connection with two second flange types including another functional component, here a diaphragm plate as a non-limiting example.

A flanged assembly B shown in FIG. 1 comprises first, second and third flange types A, B, C of a specific nominal diameter 5, of which, for example, the second flange type B can be optionally combined with the first flange type A or the third flange type C. The second flange type B may be combined with another second flange type B of the same nominal diameter 5, for example including a functional component such as an aperture plate 22 (Figure 9) to provide a hygienic, i. non-centered radially separable connection V5 (FIG. 9).

Each flange type A, B, C has, for example, a disc-shaped flange plate 1, which has a front side 2, and at the rear a pipe socket 3 with an inner bore 4, which defines the nominal diameter 5. The pipe socket 3 is, for example, designed so that it is suitable for orbital welding technology for connection to a secondary pipeline or the like. In the flange plate 1, z. B. for flange according to DIN 1 1864-2 with screws, parallel to the flange axis X through holes 7 are provided for the clamping screws, the through holes 7 of the flange types A, B, C are aligned. The flange plates 1 could alternatively be designed for flange connections according to DIN1 1864-1 or -3 (pipe fitting with groove union nut or clamping connection with clamps).

The first flange type A has a contact surface 6 which extends over the entire diameter and which is perpendicular to the flange axis X. The abutment surface 6 may include a sealing annular groove (not shown), e.g. on the inner bore 4.

The second flange type B has on the front side 2 adjacent to the inner bore 4 a flush sealing groove (annular groove or seal recess) 10, which, for example, as shown, at the outer diameter obliquely inwardly into a subsequent contact surface 6a. The intersection edge 10 'between the seal groove 10 and the inner bore 4 is here at a distance from the contact surface 6a. In the front side 2 here at a radial distance from the seal groove 10 and at a radial distance from the outer periphery of the flange 1, a first spigot 8 is formed, which is formed for example by an axis concentric to the flange X, eg conical annular shoulder 9. The annular shoulder 9 is adjoined by a further contact surface 6b, which is set back relative to the contact surface 6a. Each through hole 7 can be positioned here within the first spigot 8. The third flange type C has on the front side a second centering lug 1 1, which is formed by a, relative to a contact surface 6 d projecting, eg conical annular shoulder 12, which fits on the annular shoulder 9 of the second flange type B, to effect a centering. The contact surface 6d may include a sealing annular groove (not shown), eg in the inner bore 4. To the outside, the annular shoulder 12 is followed by a further contact surface 6c. The contact surfaces 6a-6d are, expediently, perpendicular to the flange axis X.

In the embodiment of the flanged kit B in FIG. 2, the first flange type A corresponds to that of the embodiment of FIG. 1.

The second flange type B in FIG. 2 has, in the front side and in a contact surface 6 ', which extends continuously from the sealing groove 10 to the outside diameter of the flange plate 1, e.g. a concentric with the flange X annular groove 13 as the first spigot 8 'on. The cross section of the annular groove 13 may be rectangular or approximately triangular. In the embodiment shown, the annular groove 13 at the outer diameter, for example, approximately parallel to the flange axis X. Each through hole 7 may be placed outside of the annular groove 13.

The third type of flange C in FIG. 2 has, on the planar contact surface 6 "of the front side 2, a second centering projection 11 'in the form of an annular bead 14, which in cross-section can substantially correspond to the cross section of the annular groove 13.

With a nominal diameter 5 of, for example, about 66 mm of the flange types A, B, C in FIGS. 1 to 3, the extensions of the first and second centering lugs 8, 11, 8 ', 11' in the direction of the flange axis X can be about 1, 5 mm.

In the flange kit B in FIG. 3, the first flange type A corresponds to that of the embodiment of FIG. 1.

The second flange type B differs from that of the first embodiment in FIG. 1 in that the first centering lug 8 in the form of the possibly conical annular shoulder 9 is placed close to the outside diameter of the flange plate 1, and the contact surface 6 'passes just up to the annular shoulder 9.

The third flange type C in FIG. 3 has the second centering lug 1 1 as, for example, a conical annular shoulder 12 also close to the outside diameter of the flange plate 1, matching the annular shoulder 9 of the second flange type B. The contact surface 6 "just goes through to the annular shoulder 12. With reference to FIGS. 4-9, different connections V1-V5 will be explained using at least one flange type of the flanged kit B of FIG. However, functionally similar connections can also be made using the flanged kit of FIG. 2 or FIG.

Figures 4 and 5 illustrate connections V1 and V2 typically in a pipeline, for example a bottling plant.

In the connection V1 in Fig. 4, the second flange type B is combined on the right with the first flange type A (left). In the seal groove 10, a seal 15 is arranged. The contact surface 6a of the second flange type B is pressed in this case by means of clamping screws 16 in the through holes 7 against the contact surface 6 of the first flange type A. The connection V1 is hygienic because adjacent to the inner diameter seal 15 in the seal groove 10 does not create dead spaces, however, the combined flange types A, B are not transverse to the flange axis directly to each other, but centered on the tension screws 16 in the through holes 7. This offers the advantage of the connection V1 after loosening and removing z. B. the clamping screws 16 to separate radially. The clamping screws 16 inserted into the through bores 7 when the connection V1 is made thus form a centering device between two types of flange.

The connection V2 in Fig. 5 is an aseptic connection and consists of a combination of the second flange type B (right) with the third flange type C (left), in this case via the clamping screws 16, including the seal 15 at least with their contact surfaces 6d and 6a are pressed against each other and are centered by the mating first and second centering approaches or annular shoulders 9, 12 to each other. To disconnect the connection V2, the flange plates of the second and third flange types B, C must be moved axially away from each other after loosening and removing the clamping screws 16.

In Fig. 6, for example, in the course of a pipeline, a valve R between two first flange types A is mounted, for. B. so that two hygienic connections V3 arise. For this purpose, housing flanges 18, 19, for example, an intermediate clamping disc valve Z with an adjustable closing member 17 in this case by clamping screws 16 'between two mirror-inverted arranged first flange A braced. Each housing flange 18, 19 has a front contour corresponding to the front contour of the second flange B of the flanges B, ie adjacent to the inner diameter of a flush seal groove 10, in which a seal 15 is housed, and a vertical axis to the flange contact surface 6a ' , and a first centering lug 9 ', whose outer diameter the outer diameter of the first spigot 8 of the second flange B corresponds. In the connections V3 in FIG. 6, the contact surfaces 6a 'are pressed against the abutment surfaces 6 of the first flange types A with centering by the clamping screws 16'.

In the highlighted detail of FIG. 6, an approximately radial leakage detection groove 20 is formed in the abutment surface 6a 'extending from the seal groove 10 to the first spigot 9' and (FIG. 8) with the abutment surface 6 of the first flange type A. a leakage detection channel 21 limited, which is open to the outside. The first centering lug 9 'of the housing flange 18 is for example as e.g. designed conical ring shoulder.

Fig. 7 illustrates aseptic connections V4, for example, the same fitting R as in Fig. 6, preferably an intermediate clamping disc valve Z, with two third flange types C, wherein the housing flanges 18, 19 are centered on the third flange types C. The contact surfaces 6a 'of the housing flanges 18, 19 are clamped here via the clamping screws 16' against the contact surfaces 6d of the third flange types C. The first centering lug 9 'of each housing flange 18, 19 is inserted in the second centering lug, i. the ring flange 12 of the third flange type C fitted to ensure the centering.

In the embodiment in Fig. 9, the two second flange types B are each equipped with a seal 15 in the seal groove 10, including an aperture plate 22 combined together, for. B. so that here two hygienic compounds V5 arise, which are radially separable. The orifice plate 22 includes an Innbohrung 23 whose diameter 24 is smaller than the nominal diameter 5 of the inner bore 4 of the two second flange B.

In summary, with the flanged kit B consisting of only three different flange types A, B, C create different hygienic or aseptic connections, and also make connections with valves, sensors, and the like, without each one tailored for the type of connection Flanschgattung have to. The joints may use turnbuckles, as shown, or grooved union nuts on an external thread of a flange plate, or brackets on roof surfaces of both flange plates to be separable.

As first and second centering lugs of the second and third flange types B, C, insertable centering pins and centering pin insertion holes (also through holes) on or in the front sides 2 of the second and / or third flange types B, C could be provided. For example, two centering pins are provided in two each in the front sides 2 of the second and third flange types B, C provided, parallel to the flange axis X Zentrierstift- Einsteckbohrungen.

Claims

claims

1 . Flange kit (B) for producing various externally sealed and separable connections (V1 to V5) each of a nominal diameter (5) in piping and / or piping with fittings (R) such as valves, in particular butterfly valves (Z), and / or sensors, in particular in filling plants of the food, beverage or pharmaceutical industry, comprising first, second and third flange types (A, B, C), each consisting of a flange plate (1) with at least one contact surface on the front side (2) and one Pipe neck (3) on the back, of which the first flange type (A) on the front side just continuous contact surface (6), the second flange type (B) on the front side (2) at least a first spigot (8, 8 ') and a front-flush sealing groove (10) on the inner diameter, and the third flange type (C) on the front side (2) at least one second centering shoulder (1 1, 2) matching the first centering shoulder (8, 8 ') of the second flange type (B) 1 1 '), and of which the second flange type (B) can optionally be modularly combined with the first flange type (A) or the third flange type (C) in at least one connection (V1, V2).

2. Flange kit according to claim 1, characterized in that the first and second centering lugs (8, 8 '; 1 1, 1 1') of the second and third flange types (B, C) are each concentric with the flange axis (X).

3. flanges kit according to claim 1, characterized in that in the above continuous contact surface (6) of the first flange type (A) a sealing annular groove is arranged, preferably a flange to the axis (X) concentric sealing annular groove on the inner bore (4 )

4. Flange kit according to at least one of claims 1 to 3, characterized in that the first or the third flange type (A, C) optionally modular in a connection (V3, V4) with one with the front contour of the second flange (B ) formed housing flange (18, 19) of a valve (R), preferably an intermediate clamping disc valve (Z), can be combined.

5. flanges kit according to at least one of claims 1 to 3, characterized in that two second flange types (B) in a hygienic connection (V5) including a functional element, such as a diaphragm plate (22) can be combined.

6. flanges kit according to claim 1, characterized in that the first spigot (8, 8 ') of the second flange type (B) either of an annular groove (13) in one Bearing surface 6 'of the front side (2) or from one of the front side (2) between abutment surfaces (6a, 6b) recessed, preferably conical annular shoulder (9) is limited, and that the second spigot (1 1) of the third flange (C ) either one against a contact surface (6 ") of the front (2) projecting into the annular groove (13) adjustable annular bead (14) or between abutment surfaces (6c, 6d) from the front side (2) projecting on the first annular shoulder (9 ), wherein, preferably, the extensions (Y) of the annular groove (8 '), the annular bead (14) and the annular shoulders (9, 12) in the direction of the flange axis (X) is approximately equal are.

7. flanges kit according to claim 1, characterized in that the first and second centering lugs of the second and third Flanschtypen (B, C) of at least one local centering pin in the front side (2) of a flange type (B or C) and at least one Centering pin insertion hole in the front of the other flange type (C or B) are formed, preferably of two centering pins and two Zentrierstift- Einsteckbohrungen.

8. flanges kit according to at least one of the preceding claims, characterized in that the first and second centering lugs (8, 8 ', 1 1, 1 1') at radial distances from the inner bore (4) and the outer diameter of the flange plate (1 ) are placed.

9. flanges kit according to claim 1, characterized in that the front side (2) and the respective contact surface (6, 6 ', 6 ", 6a, 6b, 6c, 6d) to the flange axis (X) are perpendicular.

10. flanges kit according to claim 1, characterized in that in the contact surface (6a) at least the second flange (B) a leakage-Erkennungsnut (20) in approximately radially from the sealing groove (10) to the first spigot (8) extends.

1 1. flanges kit according to claim 6, characterized in that the annular groove (13) and the annular bead (14) have approximately triangular or quadrangular cross-section.

12. flanges kit according to claim 1, characterized in that the flange plates (1) under the flange types (A, B, C) of the flanges kit (B) either aligned through holes (7) for clamping screws (16, 16 ') or have an external thread for a Nut-union nut or roof surfaces for a clip.

13. Flange kit according to at least one of the preceding claims, characterized in that the respective nominal width (5) of the flange types (A, B, C), preferably, in a range between about 10 mm to about 150 mm.

14. Fitting, in particular intermediate clamping disc valve (Z) for a filling installation, wherein the fitting (R) is provided with at least one housing flange (18, 19) in a connection (V3, V4) with a first or a third flange type (A, C) the flanged kit (B) according to claim 1 is mountable, and the housing flange (18, 19) of the fitting (R) a matching the third flange type (C) contour corresponding to the front side contour of the second flange type (B) with a flush sealing groove (10) at the inner diameter and an adjoining the sealing groove (10) clamping surface (20), wherein the housing flange (18, 19) optionally also on the contact surface (6) of the first flange (A) can be mounted.

15. Fitting according to claim 14, characterized in that the newly formed clamping surface (20) to a second centering shoulder (1 1) of the housing flange (18, 19) connected to the third flange type (C) matching, third centering projection (9 ') of the housing flange, (18, 19).

16. Fitting according to claim 14, characterized in that in the clamping surface (20) of the housing flange (18, 19) at least one leakage-Erkennungsnut (20) is provided, extending from the sealing groove (10) to the outside, preferably to a third Spigot (9 ') of the housing flange (18, 19) extends and forms either with the contact surface (6) of the first flange (A) or the contact surface (6a) of the third flange (C) a leakage detection channel (21).

17. Filling of the food, beverage or pharmaceutical industry, with separable connections of screwed flanges having pipes and / or fittings, characterized in that each compound (V1 to V5) optionally at least one flange type (A, B, C) of Flange kit (B) according to claim 1 encompassed.

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