EP1826322B1 - Hydrant - Google Patents

Description

The present invention relates to a hydrant and more particularly, according to the preamble of independent claim 1, a jacket tube for supplying water from a valve housing to one or more water connections of such a hydrant.

Hydrants have been known for a long time and in many different versions. They serve primarily as valves for water extraction from a public supply network and supply, for example, the fire department with extinguishing water. There are mainly two different types known, namely the underfloor hydrant and the above-ground hydrant. Both can consist of a 1- or 2-part casing pipe, or valve housing, which can be connected, for example with its lower end to a supply line. At least one detachable lid can close off the hydrant at its top. On the inside hydrants have at least one barrier, which is designed as a valve. For actuating, or opening and closing of this valve or conclusion can serve an externally operable, rotatable spindle, which runs as part of an trim mostly axially in the hydrant. Often, hydrants have an actuating rod, which is mounted in the cover or casing tube and a, on the casing tube axially guided, spindle nut moves (see, for example Fig. 1 in CH 675 139 A5 ). A connecting tube can transmit the movement of the spindle to the valve. To prevent frost damage caused by expanding, freezing water such hydrants usually have a drainage system, through which the remaining after closing the valve in the jacket tube water can flow.

An overground hydrant may e.g. be designed as a freestanding column or as arranged on or at least partially in a building wall fitting. Each hydrant includes one or more water connections, most of which are located on the side of the hydrant. The various water connections can be equipped with additional shut-off devices so that each water connection can be individually opened and closed. The shut-off of the individual connections can, however, also be effected by fittings outside the hydrants.

Above-ground hydrants are preferably equipped with a predetermined breaking point because of their exposed position. In case of damage to the hydrant, z. B. by a colliding with the overflight column vehicle, the hydrant - without its jacket tube is significantly deformed or damaged - simply overturned. This allows, for example, specially shaped fastening screws or Briden, with which the so-called (tiltable) attachment tube with the fixed, largely arranged underground pipe jacket tube is connected. At the same level, the trim is formed separable, so that when you drop the attachment tube, the spindle extension is pulled out of the spindle attachment. The spindle bearing is arranged below the predetermined breaking point, so that when a top tube of a hydrant overturned the main valve remains securely closed and thus water losses are avoided.

The water from the various water connections or water extraction openings is often activated by an additional, removal-side obturator or a Nebenabsperrorgan. This makes it possible that when connecting another reference line an existing water transport does not have to be interrupted. Also, regulating or metering functions can not be perceived with the inlet-side main shut-off device described above. Such additional Nebenabsperrorgane may be installed in the overflow column or in the extension tube of the hydrant.

In the past, hydrants were mainly used as taps for liquids, preferably water, for fire fighting purposes or sprinkler systems in agriculture, used. Today, however, hydrants are an integral part of modern public drinking water supplies. For example, they are increasingly being used for tasks such as the removal of water by public or private consumers, the production of temporary connections in the case of external supply to the pipeline network, the ventilation of the pipeline network and the flushing of the pipeline network for reasons of hygiene. Apart from the demand for hydrants in terms of high reliability, ease of use, high water performance and a long service life is now also the ease of maintenance, and optimal corrosion protection in the center of attention. To avoid corrosion damage, the inner surface of the usually made of cast iron casing pipe is usually coated with plastic, hot-dip galvanized or e-mailliert.

Other hydrants include a standpipe or several jacket tubes made of chrome steel. On the flanged, upper end of the tube, a head part is set, in which a ring seal is partially embedded and acts on the flange sealing. To assemble the chrome steel tubes, mutually screwable flanges are welded to the ends, between which usually seals are inserted. The valve housing, which has a flange for connection to a component of the pipeline network, is welded to the lowermost jacket tube (cf. WO 02/04752 A1 ). If such hydrants meet more stringent hygiene requirements, then their manufacture and assembly is quite complex.

It is also known leak detectors for permanent monitoring of the water supply network at certain points of this network, especially in hydrants (see. DE 197 57 581 A1 ) or other components of the supply network, such as in pipe or fittings (see. EP 1 052 492 A1 ).

The object of the present invention is to propose an alternative hydrant which by its design eliminates or at least minimizes most of the disadvantages known from the prior art.

This object is achieved according to a first aspect by the features of independent claim 1 by a jacket tube for supplying water from a valve housing to one or more water connections of a hydrant with other Hydrantenteilen and clamping elements is proposed. The jacket pipe according to the invention is characterized in that it is designed as a profile with a main wall, which can be braced with the other hydrant parts by means of clamping elements acting on these hydrant parts. Preferably, the jacket tube is formed as a profile which comprises an interior space at least partially surrounding the main wall and with respect to this interior spatially isolated, at least partially enclosed by auxiliary tubes clamping tubes.

According to a second aspect, this object is achieved by proposing a hydrant with such a tubular casing profile. The hydrant according to the invention is additionally characterized in that it comprises, as upper end, a cast-iron head part with a sealing surface, which is acted upon sealingly by a substantially annular seal adapted to the cross section of the tubular casing profile.

Further preferred and inventive features emerge from the dependent claims.

The tubular casing profile according to the invention has, inter alia, the advantage that, in spite of high stability and pressure resistance, it can be produced simply by means of extrusion. Especially casing profiles made of aluminum or aluminum alloys are very easy to transport and install because of their low weight. The design of the jacket pipe as a profile makes it possible to easily adapt the hydrant's height to local conditions. If necessary, the casing pipe profile can be shortened or cut to length in a simple manner and at any time, for example by sawing.

One of the advantages of the hydrant according to the invention is that it has a modular construction like a modular system. This allows retrofitting of one or more additional water extraction elements with one or more lateral water extraction openings. The casing pipe profile can be shortened here in a simple manner and at any time to the installation height of these water extraction elements, so that the original height of the hydrant despite the additional water extraction elements virtually does not change. An attachment tube of a hydrant according to the invention has a total weight of approximately 15 to 25 kg, depending on the number of water removal openings on the cast head and depending on the number of additional water removal elements, which results in a weight reduction compared to a conventional top pipe of a cast iron hydrant of about 50 -65% means. This weight reduction is achieved by the extremely lightweight casing tube, which preferably consists of light metal or composite materials; especially preferred are aluminum and aluminum alloys. To this weight reduction contribute casting head parts and water extraction elements, which preferably consist essentially of light metal materials, such as aluminum or aluminum alloys. Casting head and water extraction elements can also be made of cast iron, in particular of ductile cast iron; however, such materials are heavier than the preferred lightweight metal materials.

Fig. 1-9

Querschnitte durch je ein erfindungsgemässes Mantelrohrprofil mit Spannrohren, wobei in:
Fig. 1 vier Spannrohre gemäss einer ersten, runden Ausführungsform aussen liegen und geschlossen sind;
Fig. 2 vier Spannrohre gemäss einer zweiten, runden Ausführungsform aussen liegen und teilweise offen sind;
Fig. 3 vier Spannrohre gemäss einer dritten, runden Ausführungsform dazwischen liegen und geschlossen sind;
Fig. 4 vier Spannrohre gemäss einer vierten, runden Ausführungsform innen liegen und geschlossen sind;
Fig. 5 drei Spannrohre gemäss einer fünften, runden Ausführungsform aussen liegen und geschlossen sind;
Fig. 6 sechs Spannrohre gemäss einer sechsten, runden Ausführungsform aussen liegen und geschlossen sind;
Fig. 7 vier Spannrohre gemäss einer siebten, auswärts gebauchten Ausführungsform aussen liegen und geschlossen sind;
Fig. 8 vier Spannrohre gemäss einer achten, quadratischen Ausführungsform aussen liegen und geschlossen sind;
Fig. 9 vier Spannrohre gemäss einer neunten, einwärts gebauchten Ausführungsform aussen liegen und geschlossen sind;

Fig. 10

einen senkrechten Teilschnitt durch ein Gusskopfteil eines Hydranten gemäss einer ersten Ausführungsform, mit zwei seitlichen Wasserentnahmeöffnungen;

Fig. 11

einen senkrechten Teilschnitt durch das Fussteil des Hydranten nach Fig. 10, mit unterem Gehäuse;

Fig. 12

einen senkrechten Teilschnitt durch ein Gusskopfteil eines Hydranten gemäss einer zweiten Ausführungsform, mit zwei seitlichen Wasserentnahmeöffnungen;

Fig. 13

eine teilweise aufgeschnittene 3-D Ansicht eines Hydranten gemäss einer ersten Ausführungsform mit einem Kopfteil gemäss Fig. 10, einem Mantelrohrprofil gemäss Fig. 1 und einem Fussteil nach Fig. 11;

Fig. 14

eine Frontansicht eines Hydranten mit zwei seitlichen Wasseranschlüssen und mit einem Kopfteil gemäss einer zweiten Ausführungsform;

Fig. 15

eine Seitenansicht des Hydranten gemäss Fig. 14;

Fig. 16

eine Frontansicht eines Hydranten mit einem seitlichen Wasseranschluss im Kopfteil gemäss einer dritten Ausführungsform;

Fig. 17

eine Frontansicht eines Hydranten mit einem seitlichen Wasseranschluss im Kopfteil und einem tiefsitzenden, zusätzlichen Wasserentnahme-Element mit einem seitlichen Wasseranschluss gemäss einer vierten Ausführungsform;

Fig. 18

eine Frontansicht eines Hydranten mit zwei seitlichen Wasseranschlüssen im Kopfteil und einem hochsitzenden, zusätzlichen Wasserentnahme-Element mit einem frontalen Wasseranschluss gemäss einer fünften Ausführungsform;

Fig. 19

eine Frontansicht eines Hydranten mit zwei seitlichen Wasseranschlüssen im Kopfteil und einem halbhochsitzenden, zusätzlichen Wasserentnahme-Element mit einem frontalen Wasseranschluss gemäss einer sechsten Ausführungsform.

The casing pipe profile according to the invention for supplying water from a valve housing to one or more water connections of a hydrant and the hydrant according to the invention with such a casing pipe profile will now be explained with reference to exemplary, non-limiting, schematic drawings. Showing:

Fig. 1-9

Cross sections through one inventive jacket pipe profile with clamping tubes, wherein in:
Fig. 1 four clamping tubes according to a first, round embodiment are outside and closed;
Fig. 2 four tension tubes according to a second, round embodiment are outside and partially open;
Fig. 3 four chuck tubes according to a third, round embodiment lie therebetween and are closed;
Fig. 4 four tension tubes according to a fourth, round embodiment lie inside and are closed;
Fig. 5 lying three clamping tubes according to a fifth, round embodiment outside and are closed;
Fig. 6 six tension tubes according to a sixth, round embodiment are outside and closed;
Fig. 7 four tension tubes according to a seventh, outwardly bulged embodiment are outside and closed;
Fig. 8 four clamping tubes according to an eighth, square embodiment are outside and closed;
Fig. 9 four instep tubes according to a ninth, inwardly bulged embodiment lie outside and are closed;

Fig. 10

a vertical partial section through a cast head part of a hydrant according to a first embodiment, with two lateral water extraction openings;

Fig. 11

a vertical section through the foot part of the hydrant after Fig. 10 , with lower housing;

Fig. 12

a vertical partial section through a cast head part of a hydrant according to a second embodiment, with two lateral water extraction openings;

Fig. 13

a partially cutaway 3-D view of a hydrant according to a first embodiment with a head part according to Fig. 10 , a casing pipe profile according Fig. 1 and a foot part after Fig. 11 ;

Fig. 14

a front view of a hydrant with two side water connections and with a head part according to a second embodiment;

Fig. 15

a side view of the hydrant according to Fig. 14 ;

Fig. 16

a front view of a hydrant with a lateral water connection in the head part according to a third embodiment;

Fig. 17

a front view of a hydrant with a side water connection in the head part and a deep-seat, additional water extraction element with a side water connection according to a fourth embodiment;

Fig. 18

a front view of a hydrant with two side water connections in the head part and a high-sitting, additional water extraction element with a frontal water connection according to a fifth embodiment;

Fig. 19

a front view of a fire hydrant with two side water connections in the head part and a semi-high level, additional water extraction element with a frontal water connection according to a sixth embodiment.

FIG. 1 shows a cross section through an inventive casing pipe profile. This is as one with other Hydrantenteilen, such as with the head part 15 and the lower housing 37 (see. Fig. 10 to 19 ) by means of these hydrant parts engaging clamping elements 36 (see. Fig. 11 ) Verspannbares profile 4 formed with a main wall 6. In a preferred embodiment of the jacket tube profile are four clamping tubes according to a first, round outside and are closed. This jacket tube for supplying water from a valve housing to one or more water connections 2 of a hydrant 3 is thus formed as a jacket tube profile 4. The tubular casing profile 4 comprises a main wall 6 which at least partially surrounds an interior space 5. In this first embodiment of the tubular casing profile 4, this main wall 6 has a circular cross section and completely surrounds the interior space 5. In addition, the inventive casing pipe profile 4 with respect to this interior 5 spatially insulated, by auxiliary walls 7 at least partially enclosed clamping tubes 8. In this first embodiment of the tubular casing profile 4, the secondary walls 7 surround the clamping tubes 8 only partially, because part of these clamping tubes 8 enclosing walls through the Main wall 6 is provided. The four clamping tubes 8 are arranged here on the outside of the main wall 6 at the same distance from each other. As a result, the inner side 9 of the main wall 6 has a cylindrical surface 11 and the clamping tubes are located in the corners of a square placed by the cross section.

Because the main wall 6 has to withstand much greater pressure loads than the water-carrying part of the hydrant completely insulated clamping tubes 8, this is thicker than the auxiliary wall 7 and holds a respective national regulations corresponding test pressure of for example 24 bar and a standard pressure of 16 bar was standing. Quite generally, a hydrant is created by combining a jacket pipe profile 4 according to the invention with a head part 15 designed in accordance with national regulations, which complies with the national regulations of most countries.

That in the FIG. 1 illustrated casing pipe profile 4 has a central inner space 5 and four round, uniformly spaced from each other and parallel to the inner space 5 extending clamping tubes 8. Alternatively to this embodiment, the clamping tubes 8 may also have a deviating from the circular shape, for example, oval, cross-section (not shown).

Preferably, the casing pipe profile 4 according to the invention is produced as a straight, one-piece extrusion profile and formed from a material which is selected from aluminum, aluminum alloys and composite materials. Other light metal materials, such as magnesium may be at least part of the mentioned alloys. Preferred composites include glass fiber reinforced polymers approved for drinking water delivery.

FIG. 2 shows a cross section through an inventive casing pipe section 4 with four clamping tubes, which lie outside according to a second, round embodiment and are partially open. In this second embodiment of the jacket tube profile 4, this main wall 6 is also circular in cross section and surrounds the interior 5 completely. In contrast to the first embodiment of the tubular casing profile 4, the auxiliary walls 4 surround the clamping tubes 8 only partially, because a part of the auxiliary walls 7 has been omitted. As a result, these four clamping tubes 8 are open on one side.

FIG. 3 shows a cross section through an inventive casing pipe section 4 with four clamping tubes, which lie in between and are closed according to a third, round embodiment. In this third embodiment of the tubular casing profile 4, this main wall 6 is formed only partially circular in cross-section and surrounds the interior 5 only partially. The relative to the interior space 5 spatially insulated clamping tubes 8 lie on a defined by the main wall 6 circle. The walls which surround the clamping tubes 8 are formed as secondary walls 7 and visible as thickening from outside and within the casing tube profile 4. The casing pipe profile 4 has for this reason (in contrast to those in the Figures 1-2 and 4-6 shown embodiments) neither inside nor outside an exactly cylindrical surface.

FIG. 4 shows a cross section through an inventive casing pipe section 4 with four clamping tubes, which lie inside and are closed according to a fourth, round embodiment. In this fourth embodiment of the jacket tube profile 4, this main wall 6 is circular in cross-section and surrounds the interior 5 only partially, because the secondary walls 7 protrude into this interior. The relative to the interior space 5 spatially insulated clamping tubes 8 are located in the corners of a cross-section laid by the square. The walls which surround the clamping tubes 8 are visible as thickening only from within the outside exactly cylindrical trained tubular casing section 4.

FIG. 5 shows a cross section through an inventive casing pipe section 4 with three clamping tubes, which lie outside according to a fifth, round embodiment and are closed. In this fifth embodiment of the jacket tube profile 4, this main wall 6 is circular in cross-section and surrounds the interior 5 completely. The relative to the interior space 5 spatially insulated clamping tubes 8 are located in the corners of a triangle defined by the cross section. This can be, for example, an isosceles triangle (as shown) or even an equilateral triangle. A triangle with only one axis of symmetry (as shown) or with no axis of symmetry (not shown) on the one hand has the advantage that the mounting direction of at least all above-ground components of a hydrant is clearly predetermined, so that no confusion is possible. On the other hand, the flexibility is limited in a later change and reassembly of the hydrant, so that an additional water extraction element 31 can not be aligned arbitrarily. The secondary walls 7, which surround the clamping tubes 8, are visible as thickening only from outside the inside exactly cylindrical trained tubular casing profile 4.

FIG. 6 shows a cross section through an inventive casing pipe section 4 with six clamping tubes, which lie outside according to a sixth, round embodiment and are closed. In this sixth embodiment of the tubular casing profile 4, this main wall 6 is circular in cross-section and surrounds the interior 5 completely. The opposite the interior 5 spatially insulated clamping tubes 8 are located in the corners of a hexagon placed by the cross section. This can be, for example, an equilateral hexagon (not shown) or even a non-equilateral hexagon (as shown). The hexagon shown has the advantage that with three clamping elements 36 (as in Fig. 5 ) the mounting direction of at least all above-ground components of a hydrant can be rotated by 180 °. If the casing pipe profile 4 even has eight tensioning tubes 8 which are located in the corners of an equilateral octagon set by the cross section, then all components of a hydrant arranged above ground can be arranged in orientations rotated by 45 °. In this case, any number of clamping elements 36 can be used in each case, wherein this number must naturally be within a range of 1 to 8. Preferably, at least two, but more preferably three or four, tension members 36 are used to hold the above-ground components of a hydrant together.

According to the previously discussed embodiments 1 to 6, the main wall 6 of the inventive jacket tube profile 4 is formed as a substantially round tube. In particular, in the embodiments 1 and 2 and 4 to 6, the casing pipe profile 4 either inside or outside a cylindrical surface 11. Particular preference is given to embodiments 1, 2, 5 and 6, in which the cylindrical surface 11 lies on the inner side 9 of the main wall 6. This is because an annular seal 17 (for example, an annular lip seal or an O-ring) fitting inside the casing pipe profile 4 can sealingly connect this cylindrical surface 11 with the head part 15 and the lower casing 37 of a hydrant (cf. Fig. 10-13 ). If this cylindrical surface 11 lies on the outer side 10 of the main wall 6 (not shown), then an outer annular seal 17 resting on the outer casing profile 4 would sealingly connect this cylindrical surface 11 with the head part 15 and the lower casing 37 of a hydrant. Preferably, the head part is designed as a cast head part 15, wherein the sealing surface 16 of the cast head part 15 is arranged in a groove 18, in which the seal 17 is at least partially inserted. As a result, the hydrant 3 as upper end comprises a head part 15 with a sealing surface 16 which extends from one substantially annular, adapted to the cross section of the tubular casing profile 4 seal 17 is sealingly acted upon.

FIG. 7 shows a cross section through an inventive casing pipe section 4 with four chuck tubes, which lie outside according to a seventh, outwardly bulged embodiment and are closed. In this seventh embodiment of the tubular casing profile 4, this main wall 6 is approximately octagonal in cross-section and surrounds the interior 5 completely. The relative to the interior space 5 spatially insulated clamping tubes 8 are in an angle of preferably about 96-106 ° enclosing corners of the tubular casing section 4 and thus on the corners of a laid by the cross section square. The angles of the lying between the clamping tubes 8, blunt corners are in this case about 164-174 °. The secondary walls 7, which surround the clamping tubes 8 are visible as thickening only from outside the casing tube profile 4. Such jacket tube profiles 4 are particularly preferred, in which the blunt corners do not project beyond the clamping tubes 8 located in the almost rectangular corners to the outside. This has the advantage that in most cases in which a collision of a moving object (such as a motor vehicle) takes place, this collides only with the side walls never under water pressure. Should these auxiliary walls be slightly damaged by the impact, the safety and functionality of such a hydrant would still be guaranteed.

FIG. 8 shows a cross section through an inventive casing pipe section 4 with four chuck tubes, which lie outside according to an eighth, square embodiment and are closed. In this eighth embodiment of the jacket tube profile 4, this main wall 6 is square in cross-section and surrounds the interior 5 completely. The relative to the interior 5 spatially insulated clamping tubes 8 are thus located on the corners of a laid by the cross section square. The secondary walls 7, which surround the clamping tubes 8 are visible as thickening only from outside the casing tube profile 4. Even more than at the Fig. 7 In the embodiment shown, the tensioning tubes 8 project beyond the outer surfaces 10 of the tubular casing profile 4. This improves the protection of the main wall 6 from damage.

FIG. 9 shows a cross section through an inventive casing pipe section 4 with four chuck tubes, which lie outside according to a ninth, inwardly bulged embodiment and are closed. In this ninth embodiment of the jacket tube profile 4, this main wall 6 is approximately star-shaped in cross-section and surrounds the interior 5 completely. The relative to the interior space 5 spatially insulated clamping tubes 8 are in an angle of preferably about 74-78 ° enclosing corners of the casing pipe section 4 and thus on the corners of a laid by the cross section square. The angles of the between the clamping tubes 8 lying, obtuse corners are in this case about 192-196 °. The secondary walls 7, which surround the clamping tubes 8 are visible as thickening only from outside the casing tube profile 4. Even more than the in Fig. 7 or 8 In the embodiment shown here, the tensioning tubes 8 project beyond the outer surfaces 10 of the casing tube profile 4. This additionally improves the protection of the main wall 6 against damage.

According to the embodiments 3 and 7 to 9, no inside or outside on the casing pipe profile 4 fitting, annular seal 17 (eg an annular lip seal or an O-ring) the casing pipe profile 4 sealingly connect with the head part 15 and the lower housing 37 of a hydrant. The jacket tube profile 4 has at its upper end 12 and at its lower end 13 a sectional surface 1a, 1b, which is preferably perpendicular to the profile axes defined by the respective respective ends 14,14 'extends (see. 10 and 11 ). In the embodiments 3 and 7 to 9 discussed here, the seal 17 adjoins one of these cut surfaces 1a, 1b. Preferably, the head part is designed as a cast head part 15, wherein the sealing surface 16 of the cast head part 15 is arranged in a groove 18, in which the seal 17 is at least partially inserted. As a result, the hydrant 3 comprises, as the upper end, a head part 15 with a sealing surface 16, which is acted upon in a sealing manner by a substantially annular seal 17 adapted to the cross-section of the tubular casing profile 4.

FIG. 10 shows a vertical partial section through a cast head part 15 of a hydrant 3 according to a first embodiment, with two lateral water removal openings 20 which are closed with closure lids 19. In the middle axis of this casting head part 15 also extends the upper profile axis 14 of the bottom of the casting head 15 subsequent jacket tube profile 4. The cast head part 15 has for this purpose on its underside a groove 18 which includes a sealing surface 16 and into which a seal 17 in shape an O-ring is partially inserted. Slid on this seal 17 is the upper end 12 of the casing tube profile 4, the upper sectional surface 1a abuts against a mating surface of the cast head part 15. The seal 17 has an outer circumference, which is slightly larger than the inner circumference of the casing tube profile 4, so that the seal 17 is slightly deformed by this deferred casing tube section 4 and sealingly on the sealing surface 16 of the cast head part 15 and on the cylindrical surface 11 of the inside 9 of the main wall 6 of the casing tube profile 4 is applied. Two of the outside walls 10 of the main wall 6 protruding auxiliary walls 7 are shown in the view.

An intermediate bottom 21 hermetically separates a sensor space 22 from the water connections 2 of the two water removal openings 20. In this sensor space 22, a leak detector 23 is preferably arranged, which is designed to detect leaks in the pipeline network of the drinking water supply, to which the hydrant 3 is connected. At its center, the cast head part 15 comprises a guide bush 24 for an actuating rod 25 for actuating the main valve spindle 26 of the hydrant 3. This guide bush 24 is preferably fixed in the intermediate bottom 21 of the cast head part 15. The sensor space 22 in the cast head part 15 can be closed by a sensor space cover 27, which can preferably only be opened when at least one closure lid 19 of a water removal opening 20 is opened. This successfully prevents unwanted third parties or even vandals the sensor space cover 27 can open easily and without special tools. The cast head part 15 consists essentially of cast iron, in particular of ductile cast iron, aluminum or an aluminum or light metal alloy. The cast head part 15 defines a certain height of the circumference 28 and the casing pipe section 4 is so on a Längenmaß 29 cut to length, that at least one water removal opening 20 at a certain water extraction height 30 is above ground (see. FIGS. 14 to 19 ). In this for international use (eg for Germany) certain hydrant 3 sits on the spindle extension 25, the country-typical operating screw 33, which prevents here that the sensor space cover 27 can be opened without special tools.

FIG. 11 shows a vertical section through the foot part of the hydrant 3 according to Fig. 10 , with lower housing 37 and connecting flange 34 for mounting the above-ground tower tube with Mantelrohprofil 4 and cast iron part 15 on the underground riser (not shown) or on the main valve body (not shown) of the hydrant 3. In the central axis of the lower housing 37 also runs The lower housing 37 has at its upper side a groove 18, which comprises a sealing surface 16 and in which a seal 17 in the form of an O-ring is partially inserted. Slid on this seal 17, the lower end 13 of the tubular casing profile 4, the lower sectional surface 1b abuts against a counter surface of the lower housing 37. The seal 17 may be performed, for example, al O-ring or lip seal and has an outer circumference, which is slightly larger than the inner circumference of the casing tube profile 4, so that the seal 17 is slightly deformed by this deferred casing tube profile 4 and sealed to the sealing surface 16th of the lower housing 37 and on the cylindrical surface 11 of the inner side 9 of the main wall 6 of the casing tube profile 4 is applied.

Two of the outside walls 10 of the main wall 6 protruding auxiliary walls 7 are shown in the view. On the right side of the invisible from the outside, in which formed by the auxiliary wall 7 clamping tube 8 extending clamping element 36 (dashed) is indicated. The connecting flange 34 shown here also has anchors 35 in which engage the clamping elements 36 which engage the casting head part 15 and extend at least partially in the clamping tubes 8 These clamping elements 36 stabilize the attachment tube of the hydrant 3 by means of this Spann- Elements 36 essential part of this essay tube, such as cast head part 15, casing tube profile 4 and lower housing 37 are connected to each other under tension of the clamping elements 36. These clamping elements 36 are preferably designed as solid rods, threaded rods, tubes or ropes. As materials come on train claimable materials in question, which preferably do not corrode. Particularly preferred are threaded rods or ropes made of metal, in particular steel or steel wire. In casing tube profiles 4 with closed clamping tubes (see. Fig. 1 and 3-9 ) are the preferred clamping elements 36 additionally protected against mechanical effects, weather conditions and chemical stress (eg road salt). The lower, visible conclusion of a hydrant 3 according to the invention forms a cover 38, which may be adapted in height to the local conditions and which partially dips into the soil, the tar or other passable or walkable coverings. The predetermined breaking point between the spindle extension 25 and the main valve stem 26 of the hydrant 3 is (as in Fig. 11 indicated) at the height of the lower housing 37th

FIG. 12 shows a vertical partial section through a cast head part 15 of a hydrant 3 according to a second embodiment, with two lateral water removal openings 20 which are closed with closure lids 19. Like the similar, in Fig. 10 shown casting head part 15 extends here also the upper profile axis 14 of the subsequent below to the casting head part 15 casing tube profile 4 in the center axis of the hydrant. This casting head part 15 also comprises in its center (preferably in the intermediate bottom 21) a guide bush 24 for an actuating rod 25 for actuating the main valve spindle 26 of the hydrant 3. The sensor space 22 in the cast head part 15 can be closed by a sensor space cover 27, which can preferably only be opened when at least one closure lid 19 of a water removal opening 20 is opened. This successfully prevents unwanted third parties or even vandals the sensor space cover 27 can open easily and without special tools. The cast head part 15 again consists essentially of cast iron, in particular of ductile cast iron, of aluminum or of an aluminum or light metal alloy. The casting head part 15 defines a certain height of the circumference 28 and the jacket tube profile 4 is cut to a length dimension 29 that at least one water removal opening 20 at a certain water extraction height 30 is above ground (see. FIGS. 14 to 19 ). In this hydrant 3, which is preferably intended for national use in Switzerland, no operating screw is seated on the spindle extension 25, so that the sensor space cover 27 is locked only via the two closure lids 19.

FIG. 13 shows a partially cutaway 3-D view of a hydrant 3 according to a first embodiment with a head part 15 according to Fig. 10 , a casing pipe profile 4 according Fig. 1 and a foot part according to Fig. 11 , All parts are provided with reference numerals in accordance with these figures. In general, the same reference numerals designate like elements, even if they are not described in detail in each case.

FIG. 14 shows a front view of a hydrant 3 with two lateral water connections 2 and with a head part 15 according to the second embodiment, eg for Switzerland. The cover 38, preferably straight jacket profile tube 4 and the cast head part 15, are visible over terrain. The cast head part 15 defines a certain height enclosure 28 and the jacket tube profile 4 is cut to a length dimension 29 such that at least one water removal opening 20, or at least one water connection 2 is above ground at a certain water level 30. The clamping elements 36 are invisible here, because the secondary walls completely close the clamping tubes to the outside. Notwithstanding this representation, the sheath profile tube 4 can also form an arc, so that the upper and lower profile axis 14,14 'are not adjacent to each other but include an angle of, for example, 90 ° or 135 °. For bracing a hydrant 3 with such a bent jacket tube steel wire ropes are preferably used. The operation of the main valve is then preferably via a spindle extension 25 which is installed in the building element, which sits on the hydrant. Such a building element can be eg a bridge part, a retaining wall or a house wall.

FIG. 15 shows a side view of the hydrant 3 according Fig. 14 , The hydrants 3 visually against bottom closing cover 38 is held together by a visible here Abdeckungsverschraubung 39. According to one of the alternative embodiment shown here (not shown), the cover 38, the so-called "foundation ring", is made in one piece. This Fundamentring is slidably fitted during assembly of the hydrant on the casing pipe section 4 and pushed after the stepless alignment and tightening of the lower housing 37 on the riser down to the stop on the lower housing.

FIG. 16 shows a front view of a hydrant 3 with a side water connection 2 in the head part 15 according to a third embodiment. The hydrants 3 optically against bottom cover 38 is held together by two visible here Abdeckungsverschraubungen 39.

FIG. 17 shows a front view of a hydrant 3 with a side water connection 2 in the head part 15 and a deep-seat, additional water extraction element 31 with a lateral water connection 2 according to a fourth embodiment. This hydrant 3 can be planned from the beginning and the casing pipe section 4 cut to length accordingly. The additional water extraction element 31 with a lateral water removal opening or a lateral water connection 2 has a height 32, is arranged here at the lower end 13 of the casing tube profile 4 and comprises the casing pipe profile 4 corresponding clamping tubes. Thereby, the same clamping elements 31 can be used for bracing the hydrant as in the type of Fig. 16 , However, this hydrant can also be rebuilt during an on-site inspection by inserting the additional water extraction element 31 and the casing pipe section 4 is cut to its height 32. This cutting can be carried out by a well master on site simply by sawing off the required piece of casing pipe profile 4. Again, jacket tube profiles 4 are preferred with a cylindrical surface, because not the newly created lower sectional area 1b, but - according to the first embodiment of the tubular casing profile 4 - the inner side 9 of the main wall 6 is sealingly acted upon by the seal 17. The water connection 2 of the additional Water extraction element 31 could also be aligned against the front, right or rear (not shown).

FIG. 18 shows a front view of a hydrant 3 with two lateral water connections 2 in the head part 15 and a high-sitting, additional water extraction element 31 with a frontal water connection 2 according to a fifth embodiment. The additional water extraction element 31 has a height 32, is arranged here at the upper end 12 of the casing tube profile 4 and comprises the casing tube profile 4 corresponding clamping tubes. Again, the same clamping elements 31 can be used for bracing the hydrant as in the type of Fig. 16 or 17 , This hydrant can also be rebuilt on site by inserting the additional water extraction element 31 and the casing pipe section 4 is cut to its height 32. The water connection 2 of the additional water extraction element 31 could also be directed towards the rear (not shown).

FIG. 19 shows a front view of a fire hydrant 3 with two side water connections 2 in the head part 15 and a semi-high, additional water extraction element 31 with a frontal water connection 2 according to a sixth embodiment. The additional water extraction element 31 also has a height 32, is arranged here approximately in the middle of the casing tube profile 4 and comprises the casing tube profile 4 corresponding clamping tubes. As a result, in turn, the same clamping elements 31 can be used for bracing the hydrant as in the type of Fig. 16, 17 or 18th , This hydrant can also be converted on site by inserting the additional water extraction element 31 and dividing the casing pipe profile 4 and cut to its height 32. Also this cutting can be done by a well master on site. Alternatively, however, he can (as with all other hydrant modifications) take the necessary pieces of the tubular casing profile to the installation site, which is no problem thanks to their low weight. The water connection 2 of the additional water extraction element 31 could also be directed towards the front, to the right or to the back (not shown).

In the context of the present invention, the described and shown elements can be exchanged or combined with each other in virtually any manner.

Reference numerals:

1a, 1b cut surfaces 22 sensor chamber 2 water connections 23 leak detector 3 hydrant 24 guide bush 4 Casing profile 25 stem extension 5 inner space 26 Main valve poppet 6 main wall 27 Sensor lid 7 In addition to walls 28 Höhenzumass 8th tension tubes 29 Length of 4 9 Inside the main wall 30 Water removal height 10 Outside the main wall 31 additional water extraction element 11 cylindrical surface 32 Height of 31 12 upper end of 4 33 operating screw 13 lower end of 4 34 connecting flange 14.14 ' upper, lower profile axis 35 anchorages 15 Cast headboard 36 Clamping elements 16 sealing surface 37 lower housing 17 poetry 38 cover 18 groove 39 Abdeckungsverschraubung 19 cap 20 Water removal opening 21 false floor

Claims (24)

1. Jacketed pipe for supplying water from a valve housing to one or more water connections (2) of a hydrant (3) comprising further hydrant parts (15,37) and clamping elements (36), characterized in that the jacketed pipe is configured as a profile (4) with a main wall (6) which can be braced to the further hydrant parts (15,37) by means of clamping elements (36) acting on these hydrant parts (15,37).
2. The jacketed pipe according to claim 1, characterized in that the main wall (6) of the jacketed pipe configured as a profile (4) which can be braced, at least partially surrounds an inner chamber (5) and comprises tensioning pipes (8) at least partially enclosed by secondary walls (7) and spatially isolated from the inner chamber (5).
3. The jacketed pipe according to claim 1 or 2, characterized in that the jacketed pipe profile (4) is configured as a straight one-piece extrusion profile and formed from a material, that is selected from aluminum, aluminum alloys and composite materials.
4. The jacketed pipe according to one of claims 1 to 3, characterized in that the main wall (6) is configured as a substantially round pipe.
5. The jacketed pipe according to claim 4, characterized in that the tensioning pipes (8) are disposed entirely on the outer side or inner side of the main wall (6) so that the inner side (9) or the outer side (10) have a cylindrical surface (11).
6. The jacketed pipe according to any one of the preceding claims, characterized in that the jacketed pipe profile (4) comprises a central inner chamber (5) and four tensioning pipes (8) running parallel to the inner chamber (5) and spaced uniformly apart from one another.
7. The jacketed pipe according to any one of the preceding claims, characterized in that the jacketed pipe profile (4) has a sectional surface (1a,1b) at its upper end (12) and at its lower end (13), which runs at right angles to the profile axes (14,14') defined by the respectively corresponding ends.
8. Hydrant (3) having a jacketed pipe profile (4) according to one of the preceding claims, characterized in that it comprises a head portion with a sealing surface (16) as the upper termination, which is sealingly acted upon by a substantially annular seal (17) adapted to the cross-section of the jacketed pipe profile (4).
9. The hydrant (3) according to claim 8, characterized in that the head portion is configured as a cast head portion (15) wherein the sealing surface (16) of the cast head portion (15) is disposed in a groove (18) in which the seal (17) is at least partially inserted.
10. The hydrant (3) according to one of claims 8 or 9, characterized in that the cast head portion (15) at least comprises a lateral water connection (2) with a water withdrawal opening (20) which can be closed with a closure cover (19).
11. The hydrant (3) according to claim 10, characterized in that the cast head portion (15) has an intermediate base (21) which hermetically separates a water supply to the water withdrawal openings (20) from a sensor chamber (22).
12. The hydrant (3) according to claim 11, characterized in that the sensor chamber (22) in the cast head portion (15) has a leak detector (23) for detecting leaks in the pipeline network of the drinking water supply to which the hydrant (3) is connected.
13. The hydrant (3) according to one of claims 11 or 12 characterized in that the sensor chamber (22) in the cast head portion (15) can be closed with a sensor chamber cover (27) which can only be opened when at least one closure cover (19) of a water withdrawal opening (20) is opened.
14. The hydrant (3) according to one of claims 8 to 13, characterized in that the cast head portion (15) substantially consists of cast iron, aluminum or an aluminum alloy.
15. The hydrant (3) according to one of claims 8 to 14, characterized in that the cast head portion (15) defines a specific height dimension (28) and the jacketed pipe profile (4) is cut to length, to a length dimension (29) such that at least a water withdrawal opening (20) lies at a specific water withdrawal height (30) above ground.
16. The hydrant according to claim 15, characterized in that it comprises an additional water withdrawal element (31) with at least one lateral water withdrawal opening (20), wherein this water withdrawal element (31) has an overall height (32), is preferably disposed at the upper or at the lower end (12,13) of the jacketed pipe profile (4) and comprises tensioning pipes corresponding to the jacketed pipe profile (4).
17. The hydrant according to claim 16, characterized in that the water withdrawal element (31) as upper and/or lower termination comprises a connection profile (33) corresponding to the jacketed pipe profile (4) or a sealing surface (16) which can be sealingly acted upon by a substantially annular seal (17) adapted to the cross-section of the jacketed pipe profile (4).
18. The hydrant according to one of claims 8 to 17, characterized in that it comprises a connecting flange (34) which adjoins the lower end (13) of the jacketed pipe profile (4) or a lower additional water withdrawal element (31), wherein this connecting flange (34) has anchorings (35) in which clamping elements (36) engage which act on the cast head portion (15) and run at least partially in the tensioning pipes (8).
19. The hydrant according to claim 18, characterized in that the clamping elements (36) are configured as solid rods, threaded rods, pipes or cables.
20. The hydrant according to claim 19, characterized in that the clamping elements (36) are formed from metal, preferably from steel.
21. Hydrant system comprising at least one jacketed pipe according to one of claims 1 to 7 and comprising further hydrant parts and clamping elements (36) which can be joined to a hydrant, characterized in that it comprises a head portion, a lower housing (37) and clamping elements (36) to which the head portion can be connected with a connecting flange (34) under tension, wherein the clamping elements (36) are configured for acting on the head portion and for engaging on the lower housing (37).
22. The hydrant system according to claim 21, characterized in that it comprises at least one additional water withdrawal element (31) having at least one water connection (2) and one water withdrawal opening (20).
23. The hydrant system according to claim 22, characterized in that the head portion and the additional water withdrawal element (31) are formed from cast aluminum, cast iron or aluminum alloys.
24. The hydrant system according to claim 22 or 23, characterized in that the water withdrawal element (31) comprises tensioning pipes corresponding to the jacketed pipe profile (4) and comprises as upper and/or lower termination a connection profile (33) corresponding to the jacketed pipe profile (4) or a sealing surface (16) which can be sealingly acted upon by a substantially annular seal (17) adapted to the cross-section of the jacketed pipe profile (4).

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