EP2644788A1 - Agencement de séparation de tuyaux - Google Patents

Agencement de séparation de tuyaux Download PDF

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Publication number
EP2644788A1
EP2644788A1 EP12198884.4A EP12198884A EP2644788A1 EP 2644788 A1 EP2644788 A1 EP 2644788A1 EP 12198884 A EP12198884 A EP 12198884A EP 2644788 A1 EP2644788 A1 EP 2644788A1
Authority
EP
European Patent Office
Prior art keywords
housing
piston
valve
pressure
inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12198884.4A
Other languages
German (de)
English (en)
Other versions
EP2644788B1 (fr
Inventor
Willi Hecking
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hans Sasserath GmbH and Co KG
Original Assignee
Hans Sasserath GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hans Sasserath GmbH and Co KG filed Critical Hans Sasserath GmbH and Co KG
Priority to PL12198884T priority Critical patent/PL2644788T3/pl
Priority to EP13151502.5A priority patent/EP2644789B1/fr
Priority to PL13151502T priority patent/PL2644789T3/pl
Priority to ES13151502.5T priority patent/ES2638348T3/es
Publication of EP2644788A1 publication Critical patent/EP2644788A1/fr
Application granted granted Critical
Publication of EP2644788B1 publication Critical patent/EP2644788B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/106—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using two or more check valves
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve

Definitions

  • Pipe separators or system separators serve to reliably prevent backflow of liquid from a downstream liquid system into an upstream liquid system.
  • the upstream fluid system may be a drinking water system.
  • the downstream fluid system may e.g. to be a heating system. It is essential to prevent contaminated water from the heating system from flowing back into the drinking water system when the heating system is being refilled or refilled, for example by the pressure in the drinking water system collapsing for some reason.
  • backflow preventer There are so-called backflow preventer. These are spring loaded valves which allow fluid flow in only one direction, namely from the upstream to the downstream system. Such backflow preventers can be leaking. Therefore, e.g. For drinking water and heating water a separation of the liquid systems alone by backflow preventer not allowed. There must be a physical separation of the fluid systems so that in case of failure between the systems a connection to a drain and to the atmosphere is made.
  • System or pipe dividers include an upstream backflow preventer connected to the upstream liquid system and a downstream backflow preventer connected to the downstream system.
  • a pressure controlled bleed valve is provided between the non-return valves to provide passage from the upstream liquid system to the downstream liquid system when there is a sufficient pressure differential between the two liquid systems so that the liquid can safely flow only from the upstream to the downstream liquid system. If this pressure drop does not exist, the drain valve establishes a connection of the space between the backflow preventers with the atmosphere and a drain.
  • the drain valve is a displaceable in a valve body piston.
  • This piston has a central passage and at its downstream end face an annular valve seat, which comes to a valve-tight ring seal axially to the plant.
  • the passage then establishes an atmosphere-closed connection between the upstream and downstream fluid systems.
  • the upstream backflow preventer sits in the passage.
  • acts on the piston against an effective spring in the opening direction acts on the piston against an effective spring in the opening direction, the pressure difference between the inlet pressure in the upstream fluid system and a medium pressure, which is established in a medium-pressure space between the piston and the downstream non-return valve.
  • the drain valve body is arranged coaxially with the non-return valve.
  • the inlet pressure in the drinking water system initially forces the piston of the discharge valve against the action of the spring acting on it into its operating position in which it connects to the drinking water system Atmosphere and interrupts the process and establishes a connection between drinking water system and heating system. Then, the upstream and downstream backflow preventers are pressed. It flows drinking water to the heating system and fills it up or down.
  • the heating system is then filled to an outlet pressure that is below the inlet pressure.
  • the difference between inlet pressure and outlet pressure is determined by the pressure drop at the backflow preventer, that is by the strength of the springs of the non-return valve.
  • the intermediate pressure is in accordance with the pressure drop across the upstream backflow preventer and the pressure drop across the upstream backflow preventer.
  • the pressure difference between the inlet pressure and the mean pressure must be greater than a limit determined by the loading spring of the valve body of the drain valve.
  • DE 10 2007 030 654 A1 discloses a pipe separator arrangement in which the valve seat of the drain valve is connected to a spring-loaded piston.
  • the stroke direction of the piston runs perpendicular to the center axis of the pipeline and the opening direction of the non-return valve.
  • the piston is acted upon by the action of a spring force from the inlet pressure.
  • U1 discloses a module assembly having a fitting housing to which one or more fitting modules can be flanged.
  • a pipe separator is listed as a valve module.
  • the same fitting housing, which is installed in the pipeline, is a connection fitting, which has no other functionalities except two shut-off valves.
  • DE 42 17 334 A1 discloses a two-piece pipe separator in which a drain valve in a second housing part is flanged to a first housing part.
  • the second housing part is rotatable so that the drain is always down.
  • the known arrangement comprises a piston which is acted upon on the one hand via a connection channel leading past the upstream backflow preventer with inlet pressure and on the other hand with medium pressure.
  • the piston is connected to a movable valve plate.
  • DE 20 2011 050 267 discloses a two-piece pipe separator with a drain valve having a piston disposed perpendicular to the flow direction of the liquid between the non-return valves.
  • a disadvantage of the arrangement is that the piston is located in the flow in the middle of the medium-pressure chamber. This is done an undesirable high pressure drop.
  • the arrangement is comparatively bulky. Especially at high pressures and large fittings this is disadvantageous.
  • the object of the invention is achieved in that the piston is guided in the housing neck outside of the prevailing in the medium pressure chamber flow.
  • the arrangement may include a first connection channel between the area in the housing socket above the piston and the area upstream of the upstream non-return valve and a second connection channel between the area in the housing socket below the piston and the medium pressure chamber.
  • the piston always has an open position when the mean pressure is greater than the inlet pressure. But he is no longer in the flow path within the medium-pressure chamber. Accordingly, the flow conditions are better.
  • the piston causes virtually no pressure drop. Since the piston is no longer between the non-return valve, they can be arranged closer to each other. As a result, the arrangement is particularly compact.
  • the backflow preventer can be arranged coaxially within an elongate housing coaxial with a pipeline. But they can also be arranged coaxially within a flange pipe separator, in which the pipe separator is flanged to a connection fitting in the pipeline.
  • a first housing part for example in the form of a connection fitting, a planar connection surface, with which it can be flanged to a corresponding connection surface on the second housing part, wherein the output channel in the region of the connection is an annular channel, which is arranged around a central input channel.
  • Such flange connections with coaxial arrangements of an annular channel around a central inlet channel are known from the prior art. They are also suitable for connecting a pipe separator in different angular positions.
  • the inlet is connected to a central channel and the outlet to an annular channel connected to the central channel.
  • the backflow preventer can be arranged coaxially in the central channel.
  • downstream non-return valve can be arranged in the outlet of the first housing part and does not need to be arranged in the annular channel. Even then, a conventional backflow preventer cartridge can be used. For maintenance or replacement of the backflow preventer the housing parts are separated. The backflow preventers are then open and easily accessible.
  • a first housing part also has a flat connection surface with which it can be flanged to a corresponding connection surface on the second housing part.
  • the input channel in the region of the connection is an annular channel, which is arranged around a central output channel. In this alternative, a higher flow area and lower flow resistance is achieved.
  • the housing neck comprises a detachable, housing-fixed adapter to which a drain funnel is attached.
  • the discharge funnel is molded onto the adapter.
  • the housing neck can also be completely formed on the housing.
  • a detachable adapter has the advantage that it can be made of less expensive material, such as plastic, instead of expensive brass, since there is no increased pressure. Furthermore, the production of complex geometries by means of injection molding is made possible.
  • the drain valve comprises a valve seat part connected to the piston, which cooperates with a housing-fixed valve disk.
  • the valve plate may be connected to the discharge funnel or to the housing-fixed adapter.
  • the adapter may have an upper edge forming a spring abutment for the loading spring of the piston.
  • the second housing part can always be fastened to the first housing part such that the opening of the drain valve and the outlet funnel points downwards.
  • the flow direction can be taken into account accordingly.
  • four angular positions are provided, in which the second housing part can be fastened to the first housing part.
  • a pressure reducer behind the downstream backflow preventer is provided. This will reduce the pressure in the Downstream system, for example, when filling a heating system controlled.
  • a particularly compact arrangement and simple assembly is achieved when the first housing part has an input-side and an output-side stopcock.
  • the shut-off valves then no longer have to be installed separately.
  • some components, in particular piston and valve seat of the drain valve are made of plastic. As a result, the valve can be made more economical.
  • the valve seat has a smaller diameter than the piston.
  • the input pressure acting on the piston thus generates a larger force in the closing direction of the drain valve than would be the case with the valve seat due to the larger diameter.
  • the sealing force of the drain valve is correspondingly better.
  • Fig.1 is a generally designated 10 fitting in the form of a pipe separator arrangement shown.
  • the pipe separator arrangement 10 comprises a housing with a first housing part 12 and a second housing part 13.
  • the first housing part 12 forms a connection fitting with an inlet designed as inlet connection 14 and an outlet connection 16 arranged coaxially therewith as an outlet.
  • the pipe separator assembly 10 is in a pipeline (not shown) for Example between a supply side arranged drinking water supply in front of a heating system arranged on the outlet side (not shown) installed. The water thus flows from the drinking water supply through the inlet 14 into the fitting and from there out of the outlet 16.
  • Ball valves (not shown) on both sides are used to shut off the inlet 14 and outlet 16.
  • a sieve 11 is inserted. This is in FIG. 5 to recognize.
  • the second housing part 13 is flanged to the first housing part 12 via a flange connection. This is in FIG. 1 . 3 . 4 . 5 and 6 clearly visible.
  • the figures show the flange on the first housing part with a flat surface 27.
  • the flange is fixed by means of screws in openings 19.
  • the inlet 14 is connected to a central inlet channel 21. This is in FIG. 3 clearly visible.
  • the outlet 16 is connected to an annular channel 23. The water thus flows from the inlet 14 through the central inlet channel 21 into the second housing part and through the annular channel 23 out again to the outlet 16.
  • an upstream backflow preventer 18 and a downstream backflow preventer 20 are provided.
  • FIGS. 3 to 5 show the upstream backflow preventer 18 in the central inlet channel 21 on the side of the second housing part immediately behind the flange connection. This is good in FIG. 3 recognizable.
  • FIG. 8 shows an exploded view of the backflow preventer and the other components, which are arranged in a common, horizontal housing bore in the second housing part 13.
  • the backflow preventer 18 and 20 open in the flow path in the direction of the outlet.
  • the non-return valve 18 is seated in a non-return valve cartridge 25.
  • the non-return valve cartridge 25 forms a spring abutment for the spring 27 of the non-return valve 18.
  • the non-return valve cartridge 25 is located inside a coaxial compensation piston 29.
  • the compensation piston 29 is internally provided with a peripheral edge 31 with a ring seal.
  • the edge 31 forms the valve seat of the non-return valve 18. This is in FIG. 3 clearly visible.
  • the downstream backflow preventer 20 is seated in a conventional backflow preventer cartridge 22.
  • the backflow preventer cartridge 22 is disposed in an insert 33 and sealed against it with a ring seal.
  • the compensation piston 29 is displaceably guided with a seal in a housing-fixed sleeve 35.
  • the sleeve 35 is seated in the horizontal housing bore in extension of the inlet channel 21 in the second housing part 13.
  • the insert 33 has on the downstream side an outwardly extending, circumferential edge 37. With the edge 37, the inserted into the sleeve 35 insert 33 closes the Sleeve 35 on the downstream side.
  • the edge 37 forms a spring abutment for a weak compensation spring 39.
  • the other end of the compensation spring 39 presses on the downstream end of the compensation piston 29.
  • the sleeve 35 has inside a shoulder 41 in the region of the downstream end of the compensation piston 29.
  • the shoulder 41 forms a stop for an axial movement of the compensation piston 29 against the spring force of the compensation spring 39.
  • a medium-pressure chamber 43 is formed between the backflow preventers 18 and 20, a medium-pressure chamber 43 is formed.
  • the compensation piston 29 With the compensation piston 29, the volume of the medium-pressure chamber 43 can be changed. As a result, slight pressure fluctuations of the inlet pressure can be compensated without the drain valve opens. The exact operation of such a compensation piston is already out of the DE 10 2005 031 422 known and therefore need not be further described here.
  • test connection 32 and 34 On the side of the housing, a test connection 32 and 34, which is closed with a plug 28 or 30, is provided in each case.
  • the test port 32 is connected to the inlet 14 via a channel 47 and the central inlet channel 21. This is in FIG. 6 to recognize.
  • test port 34 is connected via a channel 45 with the medium-pressure chamber 43 between the backflow preventers 18 and 20. This is in FIG. 4 to recognize.
  • a provided at the upper end of the housing test port 36 with plug 38 is connected via the annular channel 23 to the outlet 16. In this way, for example, by means of a manometer of the input, middle and output pressure can be determined.
  • the second housing part 13 has a housing stub 40 with a downwardly directed opening.
  • the housing stub 40 extends in the vertical direction, perpendicular to the flow direction through the upstream backflow preventer 18 and to the connection axis of the flange connection.
  • a generally designated 44 adapter made of plastic and sealed with a seal 45.
  • the adapter 44 is substantially cylindrical and has an external thread 48. With the thread 48 of the adapter 44 is screwed into the housing neck.
  • An inwardly projecting rim 50 in the upper region of the adapter forms a spring abutment for a loading spring 52.
  • the vertical part of the rim 50 forms a cylindrical guide for a valve seat part 54 to be described.
  • a substantially conventional plastic discharge funnel 56 is provided with a thread 58 screwed into the adapter 44.
  • the valve seat part 54 is connected to a piston 60 at the upper end.
  • the piston 60 is movably guided in a vertical bore 66 within the housing wall with a seal 62 in the vertical direction.
  • a downwardly projecting pin 64 is provided on the bore 66 upwardly bounding the housing wall.
  • To the pin 64 engages an annular projection 68 at the top of the piston 60.
  • the pin 64 also serves as a guide for the piston 60 and the valve seat member 54 formed element.
  • the annular projection 68 is provided off-center on the top of the piston 60. Accordingly, the piston 60 is guided against rotation in the bore 66.
  • the outlet funnel 56 has radial ribs 70 below the nozzle 44.
  • the ribs 70 extend inwardly and hold a valve seal 72 in a valve core 74.
  • the valve seal 72 is secured to a valve disk 76 which fits into the valve core 74 is screwed.
  • the lower end 78 of the axially movable valve seat portion 54 forms with the valve seal 72, a drain valve.
  • valve seat part 54 is guided with a seal 80 in the edge 50 of the adapter 44. Above the seal 80, the valve seat part 54 in the region of the spring 52 has ribs which connect the lower end 78 with the piston 60. The region 82 below the piston 60 is thus connected to the interior 84 of the valve seat part 54. The region 82 is further connected via the connecting channel 45 with the medium-pressure chamber 43. This is in FIG. 4 to recognize. That is, below the piston there is medium pressure.
  • the bore 66 is connected via a channel 86 to the central input channel 21.
  • the channel 86 passes through the housing of the housing part 13 and recesses 88 in the sleeve 35 and recesses 90 in the compensation piston 29. These are in FIG. 7 and in FIG. 8 clearly visible. Above the piston 60 therefore prevails inlet pressure.
  • the spring 52 is supported on the one hand on the underside of the piston 60. On the other hand, the spring 52 is supported on the upper side of the rim 50 on the adapter 44. The spring 52 tries the piston 60 up in FIG. 3 to press and thus to hold the valve seat 54 connected to the piston 76 in an open position of the drain valve.
  • the backflow preventer 18 and 20 are closed.
  • the piston 60 is in an upper position.
  • the valve seat 78 of the drain valve is in an upper, open position. Now, when the downstream backflow preventer 20 is leaking, the water flows down into the medium pressure chamber and down through the drain valve into the atmosphere.
  • the barriers at the inlet and the outlet are opened. Then there is an increased inlet pressure in the inlet 14.
  • the piston 60 is always acted on the channel 86 against the spring action of the loading spring 52 with input pressure.
  • the piston 60 is pressed down. Then open the backflow preventer 18 and 20.
  • the Water flows through the upstream backflow preventer 18 into the medium pressure chamber and from there through the downstream backflow preventer 20 to the outlet 16.
  • the force of the inlet pressure acting on the piston is greater than the spring force and the force acting from below on the piston medium pressure.
  • the drain valve is thereby closed. When the inlet pressure drops, the drain valve opens.
  • the backflow preventer are arranged directly behind each other. As a result, the flow is only slightly affected.
  • Fig.1 shows the arrangement in perspective view. It can be seen that the arrangement is particularly compact. The overall length is low compared to known arrangements. The diameters are also small. Since all internal components are made of plastic, the material consumption for metal is low.
  • FIG. 1 It can be seen that the flange connection between the housing parts 12 and 13 is identical in four orientations.
  • the second housing part can thus be installed in four different orientations.
  • the second housing part 13 is rotated by 90 ° about the connecting axis.
  • the drain funnel 56 also projects downwardly as required.
  • connection fitting 12 can be completely rotated by 180 ° about the connection axis of the flange connection. There is also the possibility of rotation through 180 ° about the tube axis, so that the flange "back" in FIG. 2 is arranged
  • Embodiment 2 generally corresponds to the embodiment 1. Again, a central input channel and an annular channel is provided as an output channel. Furthermore, a pressure reducer 100 is provided. This is in the FIGS. 10 to 14 shown. The pressure reducer 100 is inserted into a nozzle 102 in the region of the outlet 116 behind the downstream non-return valve 20. The nozzle 102 is formed in the present embodiment in the first housing part 112. The pressure reducer 100 regulates the output pressure to a desired value.
  • Fig.15 to 30 is also a generally designated 210 fitting in the form of a Rohrtrenneran extract shown.
  • the pipe separator arrangement 210 comprises a housing with a first housing part 212 and a second housing part 213.
  • the first housing part 212 forms a connection fitting with an inlet formed as inlet port 214 and a coaxially arranged outlet nozzle 216 as an outlet.
  • the pipe separator arrangement 210 is installed in a pipeline (not shown), for example, between a drinking water supply arranged on the inlet side in front of a heating system (not shown) arranged on the outlet side. The water thus flows from the drinking water supply through the inlet 214 into the fitting and from there out of the outlet 216. Ball valves (not shown) on both sides are used to shut off the inlet 214 and outlet 216.
  • the present fitting 210 does not differ from the fitting 10 of the first embodiment.
  • the second housing part 213 is flanged to the first housing part 212 via a flange connection.
  • FIGS. 15 to 22 clearly visible.
  • the figures show the flange on the first housing part with a flat surface 227.
  • the flange connection is by means of screws 211 in openings 219 (FIGS. Figure 22 ) fixed.
  • the inlet 214 is not connected to a central input port but to an annular port 221. This is in FIG. 21 clearly visible.
  • the outlet 216 is thus connected to a central outlet channel 223 instead of an annular channel. The water flows from the inlet 214 through the annular channel 221 into the second housing part 213 and through the central outlet channel 223 back to the outlet 216.
  • an upstream backflow preventer 218 and a downstream backflow preventer 220 are provided between the inlet and outlet. These are in FIG. 20 and 21 to recognize. It can be seen that, unlike the above embodiments, the backflow preventers 218 and 220 flow through from right to left in the illustration.
  • FIGS. 27 to 30 show the backflow preventer 218 and 220, and the other components which are arranged in a common, horizontal housing bore in the first and second housing part.
  • the backflow preventers 218 and 220 open in the flow path in the direction of the outlet, ie to the left in FIG. 20 and 21 , FIG. 29 and 30 show the arrangement of the backflow preventer in detail.
  • the backflow preventer 220 is seated in a backflow preventer cartridge 225.
  • the backflow preventer cartridge 225 forms a spring abutment for the spring 227 of the backflow preventer 220.
  • the spring 227 urges a valve disk 229 of the backflow preventer 220 against a valve seat formed by a valve seat portion 231 and a seal 202. This is in FIG. 29 clearly visible.
  • the valve seat part 231 has an annular groove on the outside. In the annular groove sits a ring seal 208.
  • the valve seat part 231 is sealingly inserted into an insert 206.
  • the valve seat part 231 bears against an inwardly projecting edge 201 of the insert 206.
  • the insert 206 has an annular groove on the outside. In the annular groove, a ring seal 203 is arranged.
  • the insert member 206 is inserted with the ring seal 203 in the downstream region of a housing-fixed sleeve 235.
  • the sleeve 235 is provided with a downstream annular groove with a ring seal 205.
  • the sleeve 235 is further provided with an upstream annular groove having a Ring seal 207 provided.
  • the sleeve 235 is seated in a horizontal housing bore in extension of the outlet channel 221 in the first and second housing part.
  • the sleeve 235 is sealed with the ring seal 205 against the first housing part and with the ring seal 207 against the second housing part.
  • the sleeve 235 In the area between the ring seals 205 and 207, the sleeve 235 has an open area with ribs 209. These are in FIG. 27 . 28 and 30 clearly visible.
  • the insert 206 is connected to a radially outwardly projecting edge portion 237. The edge portion is externally adjacent to the downstream end of the sleeve 235 and holds the insert in place. This is in FIG. 29 to recognize.
  • the upstream backflow preventer 218 includes a valve plate 239 which cooperates with a seal 204 in a valve seat portion 233.
  • the valve seat part 233 is fixed to the housing and sleeve-shaped.
  • the sleeve 235 has an inwardly projecting edge at the upstream end.
  • the valve seat portion 233 of the upstream non-return valve 218 is inserted to the edge of the sleeve 235 and sealed with the seal 204 against this.
  • the valve seat portion 233 forms a collar 200 at the inner end.
  • the collar 200 forms a spring abutment for the spring 241 of the non-return valve.
  • the spring 241 presses the valve plate 239 of the non-return valve 218 against the seal 204.
  • an intermediate pressure chamber 243 is formed.
  • a test connection 232 and 234 sealed with a plug 228 or 230 is provided at the top of the housing.
  • the test port 232 is connected to the inlet 214 via the annular channel 221. There prevails inlet pressure. This is in FIG. 20 to recognize.
  • the test port 234 is connected to the central outlet 216 via a channel 247. There is initial pressure.
  • test port 236 On the side of the housing, a test port 236 is provided with a plug 238. This one is in FIG. 19 good to see.
  • the test port 236 is connected via a channel 245 to the medium pressure chamber 243 between the backflow preventers 218 and 220. There is medium pressure. In this way, for example, by means of pressure gauges at the test ports of the input, middle and output pressure can be determined.
  • the second housing part 213 has a housing neck 240 with a downwardly directed opening.
  • the housing stub 240 extends in the vertical direction, perpendicular to the flow direction through the upstream backflow preventer 218 and to the connection axis of the flange connection.
  • funnel 256 made of plastic is screwed at the lower end and sealed with a seal 245.
  • the housing socket 240 is provided with an external thread 258.
  • the piston assembly includes an axially movable piston 260.
  • the piston 260 is urged upward by the spring force of a loading spring 252.
  • the piston 260 is sealingly guided in a housing-fixed guide sleeve 248 with a seal 254.
  • the guide sleeve 248 has an upper sleeve part 268 and a lower sleeve part 269 formed thereon.
  • the lower sleeve portion 269 is concentric with the housing neck 240.
  • the upper sleeve portion 268 is formed off-axis to the lower sleeve portion 269.
  • the lower sleeve part 269 is sealed with a arranged in an outer annular groove seal 242 relative to the housing neck 240.
  • the upper sleeve part 268 has an outer circumferential annular groove with a seal 246.
  • the second housing part 213 has an inner housing neck 250, which is arranged with a smaller diameter off-axis within the housing neck 240.
  • the upper sleeve part 268 is sealed with the seal 246 opposite the inner housing neck 250. This is in FIG. 25 to recognize.
  • the piston 260 is with the seal 254 axially displaceably guided within the upper sleeve part. Thus, no water can get past the piston 260 down.
  • the guide sleeve 248 is provided between the upper and lower sleeve members 268 and 269 with an inwardly projecting rim 258.
  • the rim 258 extends inwardly and holds a tubular inner guide member 262.
  • the inner guide member 262 is coaxial with the upper sleeve member 268.
  • the loading spring 252 is supported on the top of the rim 258, the loading spring 252 is supported.
  • the edge 258 thus forms a spring abutment.
  • the upper end of the loading spring 252 presses on the underside of the piston 260.
  • the piston 260 has at the lower end a threaded ring 264 which is connected via ribs 266 to the underside of the upper piston surface.
  • the threaded ring 264 is provided with an external thread.
  • a substantially tubular valve closing body 267 is screwed on the external thread.
  • valve closing body 267 together with a valve seal 272 forms a drain valve.
  • the valve seal 272 is fastened with a screw 270 on a valve seat 274 serving as a valve seat.
  • the plate 274 is held by means of radial ribs 276 off-axis in a ring 278.
  • the ring 278 is supported on an edge extending inwardly from the discharge throat. It can be seen that the valve seal 272, the screw 270 and the plate 274 are formed fixed to the housing.
  • the piston 260 with the valve closing body 267 are axially movable.
  • the medium-pressure space 243 is connected to the area below the upper piston surface and the interior of the valve closing body 267 via the intermediate space 280 formed between the housing stub 240 and the inner housing stub 250. Here is therefore medium pressure.
  • the valve closing body 267 pushes with its lower edge on the valve seal 272, the drain valve is closed. It can not leak water.
  • the region 282 upstream of the backflow preventers, and thus the inlet, is connected via a channel 284 to the region above the upper piston surface of the piston 260.
  • the spring 252 tries the Piston 260 up in FIG. 20 to press and so to hold the connected to the piston 260 valve closing body 267 in an open position of the drain valve.
  • the piston 260 is moved upward. Then the drain valve opens. Water flows out of the medium pressure chamber until the pressure is again lower than the inlet pressure.
  • the backflow preventer 218 and 220 are closed.
  • the piston 260 is in an upper position.
  • the valve closing body 269 of the drain valve is in an upper, open position. Now, when the downstream backflow preventer 20 is leaking, the water flows down into the medium pressure chamber 243 and down through the drain valve into the atmosphere.
  • the barriers at the inlet and the outlet are opened. Then there is an increased inlet pressure in the inlet 214.
  • the piston 260 is always acted upon via the channel 284 against the spring action of the loading spring 252 with inlet pressure. With increased inlet pressure, the piston 260 is first pressed down. Then open the backflow preventer 218 and 220. Then there is a differential pressure between the pressure in the medium pressure chamber and the inlet pressure.
  • the water flows through the upstream backflow preventer 218 into the medium pressure chamber 243 and from there through the downstream backflow preventer 220 to the outlet 216.
  • the force of the inlet pressure acting on the piston is greater than the spring force and that acting from below on the piston Force of medium pressure.
  • the drain valve is thereby closed. When the inlet pressure drops, the drain valve opens and the backflow preventer closes.
  • the backflow preventer are arranged directly behind each other. As a result, the flow is only slightly affected. It can be seen that the arrangement is particularly compact. The overall length is low compared to known arrangements. The diameters are also small. Since all internal components are made of plastic, the material consumption for metal is low. It can be seen that the effective piston area of the piston 260 is greater than the seat diameter of the piston-closing body 267. As a result, the force exerted on the piston at each pressure is greater than the force exerted on the valve.
  • a conventional drain valve would open constantly.
  • the present embodiment therefore uses a valve seal 272, which has a peripheral lip 600 at the edge.
  • the lip 600 extends upward in FIG FIG. 25 and something inside.
  • the lip 600 abuts the outside slightly above the lower edge of the valve closing body 267. This is in FIG. 56 to recognize.
  • the valve closing body must make a small stroke before the drain valve opens. This hub is indicated by an arrow 604 in FIG FIG. 56 illustrated.
  • the last end 602 of the lower edge of the valve closing body 267 passes over the lip 600.
  • the drain valve remains closed. This means that the drain valve does not open at small pressure fluctuations of the inlet pressure. As long as the pressure fluctuations do not trigger a stroke of the valve closing body, in which the lower edge leaves the valve seal 272, a drop is avoided.
  • the mean pressure is greater than the inlet pressure.
  • the piston 260 moves upward. Thereby, the valve closing body 267 is moved upward.
  • the drain valve opens. Water from the medium pressure space flows.
  • the spring 252 holds the drain valve in the open state until the inlet pressure rises again. If, on the other hand, the outlet pressure rises and, at the same time, the downstream non-return valve should be defective, this increased outlet pressure also prevails in the medium-pressure chamber. Then the mean pressure is greater than the inlet pressure.
  • the piston is also moved up here and the drain valve opens. Heating water is drained.
  • the present embodiment enables the assembly to be installed in virtually any orientation.
  • the arrangement according to this embodiment has an even lower flow resistance than the arrangement with a central inlet channel. All parts requiring maintenance, in particular the backflow preventer are provided on the second housing part 213. It will allows to easily exchange the second housing part 213 and to wait in the factory. The installer involved in maintenance only needs to loosen the screws and does not need to know the device any further. This reduces the training required and the risk of incorrect installation and maintenance.
  • FIGS. 31 to 38 show a variant of the third embodiment.
  • the pipe separator is not installed in a pipeline, but screwed to an existing, lockable faucet (not shown).
  • the generally designated 310 pipe separator consists of a first housing part 312 and a second housing part 313.
  • the second housing part 313 and all its components and functions installed therein are identical to the housing part 213 of the third embodiment and therefore need not be further explained here.
  • the first housing part 312 has a flange 327, with which the second housing part 313 is flanged to the first housing part 312 as in the third embodiment. Between the housing parts 312 and 313, a seal 315 is arranged. This is in Figure 38 clearly visible.
  • the inlet 314 is connected to an annular channel 321.
  • the outlet 316 is connected to a central outlet channel 323. This is further connected to a plugged with test port 330. At the test port 330, the output pressure can be determined.
  • the assembly 310 is bolted to the inlet 314 at an existing water connection.
  • the outlet 316 is designed as a hose connection. An attached hose can be firmly connected to the heating system, which would not be standard without a pipe separator.
  • the hose can also be removed and water at the outlet 316 tapped.
  • FIGS. 39 to 46 show a further variant of the third embodiment.
  • the pipe separator is not integrated into a pipe, but connected to the end of a pipe (not shown).
  • the generally designated 410 pipe separator consists of a first housing part 412 and a second housing part 413.
  • the second housing part 413 and all its components and functions installed therein are identical to the housing part 213 of the third embodiment and therefore need not be further explained here.
  • the first housing part 412 has a flange 427, with which the second housing part 413 is flanged to the first housing part 412 with a seal 415, as in the third embodiment.
  • the first housing portion 412 includes a tubular inlet 414.
  • the tubular inlet 414 rests on a post having a downwardly extending neck 486.
  • the nozzle 486 is plugged onto the test port 434 without plugs, which serves in the embodiments 3 and 4 as a test port for checking the inlet pressure.
  • the comparatively long, tubular inlet 414 is supported and held in its position. This is in FIG. 46 to recognize.
  • the tubular inlet 414 forms at its device-side end (on the right in FIG. 44 ) a shoulder 487.
  • the shoulder 487 serves as a valve seat for a manually operated shut-off valve.
  • the shut-off valve comprises a control handle 488, a spindle 489 and a valve head 490 which can be adjusted by means of the control handle. Turning the control handle 488, the valve can be closed and thus the inlet 414 shut off.
  • a test connection 491 closed with a stopper is molded onto the first housing part 412. This replaces that in the exemplary embodiments 3 and 4 test port provided on the housing part 413, which is used to check the input pressure.
  • a channel 492 is further provided, which is connected to an annular channel 421.
  • the annular channel 421 is connected as an inlet as described above with the annular channel in the second housing part 413.
  • the outlet 416 is connected behind the two backflow preventers with the central channel in the second housing part 413.
  • the outlet 416 has the form of a hose connection as in the above embodiment.
  • the arrangement 410 can be used on the one hand as a pipe separator for filling, for example, heating systems. At the same time, however, the arrangement also offers the possibility of tapping water at the outlet 416. For this purpose, only the control handle 488 must be actuated.
  • FIGS. 47 to 54 show a further variant of the third embodiment.
  • the pipe separator is integrated into a pipeline.
  • the generally designated 510 pipe separator consists of a first housing part 512 and a second housing part 513.
  • the second housing part 513 and all its components and functions installed therein are identical to the housing part 513 of the third embodiment and therefore need not be further explained here.
  • the first housing part 512 has a flange 527, with which the second housing part 513 is flanged to the first housing part 512 with a seal 515 as in the third embodiment.
  • this sixth embodiment has a pressure reducer 580 and a pressure gauge 582.
  • the pressure reducer 580 as a pressure reducer insert into a housing stub 584 in the first Housing part 512 is formed.
  • the pressure reducer insert is already known from numerous publications and patents of the applicant and therefore need not be described in detail here.
  • the housing stub 584 is disposed with the outlet and the central portion 586 downstream of the backflow preventers. In this way, the pressure at the outlet 516 is regulated.
  • the pressure gauge 582 is seated in a housing neck, which is integrally formed with the area behind the pressure reducer 580 to the first housing part 512. This is in FIG. 54 to recognize.
  • FIG. 55 illustrates how the components of the pipe separator assemblies described above form a modular kit from which various pipe separators can be formed.
  • the present exemplary embodiments integrate the different components in the first housing parts 212, 312, 412 and 512, respectively. All of these first housing parts can be connected to a housing part 213 that is identical for all assemblies. This has the advantage that the production and storage costs can be significantly reduced. In addition, only the second housing part 213 needs to be removed and maintained or replaced for maintenance and renewal of the pipe separator. The handling is made easier for the installer and the training effort is reduced.
  • FIG. 56 illustrates a drain valve in which, as described above, a drop can be prevented with slightly fluctuating input pressure without using a separate compensation piston.
  • FIGS. 57 to 59 show an alternative embodiment of such a drain valve.
  • a piston 660 is connected to a valve closing body 667.
  • the valve closing body 667 cooperates with a valve seat portion 631 and an O-ring 632 as a gasket.
  • the valve closing body 667 is, as in the above embodiments 3-6 formed by a cylindrical hollow body. This is good in FIG. 58 to recognize.
  • the valve seat portion 631 includes an upper ring 633 from which two webs 634 extend downwardly. With the ring 633, the valve seat part 631 is a tubular, inner guide member 662 written down, which is fixed to the housing with the sleeve already described above and immovably connected.
  • valve plate 639 is held between the webs 634.
  • the valve plate 639 extends upwardly to form a substantially vertical transition region 636.
  • an annular groove is provided for the O-ring 632 as a valve seal.
  • FIG. 60 shows a generally designated 710 fitting in the form of a pipe separator assembly.
  • the pipe separator assembly 710 includes a one-piece housing 712.
  • the housing 712 has a first flange 713 with an inlet 714 and a coaxially arranged flange 715 with an outlet 716.
  • the pipe separator arrangement 710 is installed in a pipeline (not shown), for example, between a drinking water supply arranged on the inlet side in front of a heating system (not shown) arranged on the outlet side.
  • the design of inlet 714 and outlet 716 allow installation in conventional flange fittings, which are manufactured for example by the applicant. In this case, other functionalities, such as water treatment or pressure reducer in the valve can be realized.
  • the water flows through the inlet 714 into the fitting and from there out of the outlet 716.
  • the housing 712 forms in the interior obliquely extending walls 701 and 702 with openings.
  • An inlet chamber 721, a medium pressure chamber 743 and an outlet chamber 723 are formed by the walls.
  • Backflow preventers 718 and 720 form valves which control the flow through the openings in the walls 701 and 702.
  • the backflow preventer 718 and 720 sit in also obliquely upwardly extending housing stub 722 and 724. It can be seen that in this way large flow cross sections for applications with special pressure and flow conditions can be realized.
  • a housing stub 740 is formed at the bottom of the housing 712.
  • a channel 745 connects the upper portion 782 within the housing stub with the inlet chamber 721.
  • a piston 760 is guided in the housing stub 740.
  • a channel 747 connects the interior of the housing stub 740 with the medium-pressure chamber 743. With the piston 760, a drain valve is controlled in the manner described above. The mode of operation need therefore not be described further here.
EP12198884.4A 2012-03-29 2012-12-21 Agencement de séparation de tuyaux Active EP2644788B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL12198884T PL2644788T3 (pl) 2012-03-29 2012-12-21 Układ przerywacza rurowego
EP13151502.5A EP2644789B1 (fr) 2012-03-29 2013-01-16 Ensemble modulaire d'un agencement de séparation de tuyaux
PL13151502T PL2644789T3 (pl) 2012-03-29 2013-01-16 Modułowy zestaw konstrukcyjny do układów separatora rurowego
ES13151502.5T ES2638348T3 (es) 2012-03-29 2013-01-16 Kit modular para disposiciones de separación de tubos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012102701A DE102012102701B3 (de) 2012-03-29 2012-03-29 Rohrtrenneranordnung

Publications (2)

Publication Number Publication Date
EP2644788A1 true EP2644788A1 (fr) 2013-10-02
EP2644788B1 EP2644788B1 (fr) 2015-11-04

Family

ID=47522332

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EP12198884.4A Active EP2644788B1 (fr) 2012-03-29 2012-12-21 Agencement de séparation de tuyaux

Country Status (4)

Country Link
EP (1) EP2644788B1 (fr)
DE (1) DE102012102701B3 (fr)
ES (1) ES2556078T3 (fr)
PL (1) PL2644788T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3919792A1 (fr) * 2020-06-04 2021-12-08 A. u. K. Müller GmbH & Co. KG Corps de soupape

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013102460A1 (de) 2013-03-12 2014-09-18 Hans Sasserath & Co. Kg Heizungsarmatur
DE102017105435A1 (de) 2017-03-14 2018-09-20 Hans Sasserath Gmbh & Co Kg Heizungsarmatur

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478778A (en) * 1967-05-25 1969-11-18 Hersey Sparling Meter Co Clapper valve with changing bias
US4945940A (en) * 1989-08-21 1990-08-07 Stevens Robert B Tamper proof backflow prevention assembly
US5107888A (en) * 1989-11-13 1992-04-28 Cmb Industries, Inc. N-shaped backflow preventor
DE4217334A1 (de) 1992-05-26 1993-12-02 Waletzko Armaturen Gmbh Systemtrennungsarmatur
DE10214747A1 (de) 2002-04-03 2003-10-16 Sasserath & Co Kg H Ventilanordnung für einen Rohrtrenner
US20060213556A1 (en) * 2005-03-28 2006-09-28 Royse David L Single-piece manifold with reduced pressure arrangement
DE102005031422B3 (de) 2005-07-04 2006-12-21 Hans Sasserath & Co. Kg Systemtrenner
DE102007030654A1 (de) 2007-07-02 2009-01-08 Hans Sasserath & Co. Kg Rohrtrenneranordnung
DE202009001951U1 (de) 2008-10-02 2010-03-04 M T W - Endoskopie Inhaber Wolfgang Haag E.K. Medizinisches Instrument

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478778A (en) * 1967-05-25 1969-11-18 Hersey Sparling Meter Co Clapper valve with changing bias
US4945940A (en) * 1989-08-21 1990-08-07 Stevens Robert B Tamper proof backflow prevention assembly
US5107888A (en) * 1989-11-13 1992-04-28 Cmb Industries, Inc. N-shaped backflow preventor
DE4217334A1 (de) 1992-05-26 1993-12-02 Waletzko Armaturen Gmbh Systemtrennungsarmatur
DE10214747A1 (de) 2002-04-03 2003-10-16 Sasserath & Co Kg H Ventilanordnung für einen Rohrtrenner
US20060213556A1 (en) * 2005-03-28 2006-09-28 Royse David L Single-piece manifold with reduced pressure arrangement
DE102005031422B3 (de) 2005-07-04 2006-12-21 Hans Sasserath & Co. Kg Systemtrenner
DE102007030654A1 (de) 2007-07-02 2009-01-08 Hans Sasserath & Co. Kg Rohrtrenneranordnung
DE202009001951U1 (de) 2008-10-02 2010-03-04 M T W - Endoskopie Inhaber Wolfgang Haag E.K. Medizinisches Instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3919792A1 (fr) * 2020-06-04 2021-12-08 A. u. K. Müller GmbH & Co. KG Corps de soupape

Also Published As

Publication number Publication date
ES2556078T3 (es) 2016-01-12
EP2644788B1 (fr) 2015-11-04
DE102012102701B3 (de) 2013-06-20
PL2644788T3 (pl) 2016-04-29

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