EP3234426A1 - Druckbegrenzungsventil - Google Patents
DruckbegrenzungsventilInfo
- Publication number
- EP3234426A1 EP3234426A1 EP15816434.3A EP15816434A EP3234426A1 EP 3234426 A1 EP3234426 A1 EP 3234426A1 EP 15816434 A EP15816434 A EP 15816434A EP 3234426 A1 EP3234426 A1 EP 3234426A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure relief
- relief valve
- pressure
- housing
- valve seat
- 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
Links
- 230000007704 transition Effects 0.000 claims description 11
- 238000012805 post-processing Methods 0.000 claims description 6
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005495 investment casting Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D5/00—Heat treatments of cast-iron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7738—Pop valves
- Y10T137/774—Pop pressure reactor in inflow to valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
Definitions
- the invention relates to a pressure relief valve according to the preamble of patent claim 1.
- the housing is usually made of steel, in particular a solid steel block, with recordings for pressure adjustment and pressure medium channels must be drilled in the housing.
- bores introduced for manufacturing reasons must also be closed again, since they were only necessary for the production of the boreholes required for operation and would be a hindrance to operation. This usual procedure is
- Valve seat is but at the disclosed there for a hardening of the valve seat method, the work hardening, required on the one hand, the work hardening by means of suitable
- the invention is based on the object, a
- a pressure relief valve according to the present invention includes a housing and a valve seat formed in the housing which is spring loaded
- the housing is made of cast iron with nodular graphite, in particular GGG or GJS - called “ductile iron", wherein the housing at least in a region of the valve seat
- Surface hardening includes hardening processes such as induction hardening,
- An advantage of the pressure relief valve according to the invention is that
- the surface hardening is a cost-hardening method, because because of the good dimensional accuracy machining is usually not necessary or keeps at least within narrow limits and thus reducing a tool insert.
- the housing is advantageously produced by means of a precision or investment casting process, such as, for example, a lost wax process, in particular with a wax model enveloped in refractory molding material.
- a precision or investment casting process such as, for example, a lost wax process
- a wax model enveloped in refractory molding material such as, for example, a wax model enveloped in refractory molding material.
- sand cores made of sand and phenolic resin, as well as so-called print cores, made of plastic after the rapid prototyping and / or rapid manufacturing process
- At least one, in particular blind-hole-shaped, receptacle is advantageously provided in the housing, in which at least partially the pressure adjustment device is arranged, wherein the receptacle contains the valve seat.
- the receptacle is approximately rotationally symmetrical.
- rotating tools can be introduced into the receptacle, for example, for an optionally required post-processing of the valve seat before or after the surface hardening.
- thus can be a thread in the recording
- the receptacle is formed as a recess in the housing.
- the valve seat of the pressure adjustment of approximately in one
- Closing direction of the closing element arranged. This further achieves a compact and space-saving design of the pressure relief valve.
- the above-mentioned surface hardening has the further advantage that because of the resulting reduced use of tools for the
- valve seat can be arranged in such a way that it can be used exclusively from a single side, in particular via the receptacle, for surface hardening
- the closing element has a closing cone, from which, starting in the closing direction, a guide piston is arranged on the closing element.
- the closing cone in particular a contact surface of the closing cone, is in the closed state of the closing element in contact with the valve seat.
- the closing element and the guide piston are integrally formed.
- a spring plate of the pressure adjustment device starting from the closing cone, against the closing direction, a spring plate of the pressure adjustment device, in particular adjacent to, the
- Closing element arranged.
- the closing element and the spring plate can be formed in one piece or in several pieces.
- a transition of the receptacle between the spring plate and the valve seat is at least partially conical.
- the transition from a region of the spring plate in a closed position of the closing element to the valve seat is formed at least partially conically tapering. Due to the inventive design of the transition, the housing is weakened less.
- more housing material remains between the receptacle and a fastening recess provided adjacent to the receptacle in the housing, with which the pressure limiting valve can be fastened to one or between two plates.
- a plurality of mounting recesses are provided in the housing, which are preferably formed as through holes to attach the pressure relief valve in a simple manner, for example with through bolts. More preferably, the spring plate is at a portion of the spring
- Pressure adjustment protrudes designed to taper in the closing direction.
- the diameter of the receptacle may decrease in the closing direction, in particular gradually and / or continuously.
- the pressure relief valve is formed in an intermediate plate construction, wherein the housing advantageously two plane-parallel to each other Has contact surfaces.
- the housing advantageously two plane-parallel to each other Has contact surfaces.
- the pressure relief valve is directly controlled, which further favors a compact and space-saving design of the pressure relief valve according to the invention.
- Pressure limiting valve 1 includes a housing 2 in which a receptacle 4 is provided for a provided in the housing 2 pressure adjustment device 6.
- the pressure adjustment device 6 includes a reducer 8, a spring 10 which can be preloaded therein, and a spring plate 12.
- the spring plate 12 is formed integrally with a spring-loaded closing element 14 which, starting from the spring plate 12 in the closing direction 24, has a closing cone 16 and a guide piston 18.
- the reducer 8 is screwed into the receptacle 4, wherein in the receptacle 4, an internal thread is provided and a corresponding external thread on the
- the receptacle 4 contains a valve seat 20 and a transition 22 from a region of the spring plate 12 in a closed position of the closing element 14 to the valve seat 20.
- the housing 2 is whether surface-hardened to a sealing function between the valve seat 20 and closing cone 16 permanently to ensure and thus increase the life of the pressure relief valve.
- the closure member 14 is biased in its closing direction 24 against the valve seat 20.
- the transition 22 is formed in the closing direction 24 tapered.
- Spring plate 12 is at its over the spring 10 projecting portion in
- Recording 4 for the pressure adjusting device 6 is in the closing direction 24 of the
- Closing element 14 of the transition 22 is arranged to the valve seat and further in
- Closing direction 24 of the guide piston 18 is arranged in the receptacle 4.
- the closing cone 16 In its closed position, the closing cone 16 is in contact with a contact surface with the valve seat 20 and seals a high-pressure side against a low-pressure side.
- Between the guide piston 18 and the closing cone 16 is a rod portion of the
- Closing element 14 arranged with a reduced compared to the guide piston 18 and / or the contact surface of the closing cone 16 diameter.
- the annular gap serves to equalize the pressure medium between the annular space 26 and the piston chamber 28 as soon as the closing element moves in the receptacle.
- the size of the annular gap determines a degree of damping, with which the movement of the closing element 14 is damped in the receptacle 4, as it is in the interaction of spring 10 and closing element 14, in particular with the spring plate 12, physically considered a spring / mass system that could otherwise swing undamped.
- Pressure medium space 30 there is a low pressure. Exceeds the high pressure in
- the closing element 14 is opposite to the closing direction 24 with his
- Closing cone 16 lifted from the valve seat 20 and pressure medium can on the
- Pressure medium chamber 30 in a pressure medium sink (not shown) drain is thus limited to the value corresponding to the equivalent of the spring 10, wherein the value is adjustable or adjustable.
- Pressure relief valve 1 are arranged in the housing 2, two pressure adjustment devices 6, each with an associated receptacle 4 is substantially mirror-inverted.
- the receptacles 4 shown in the second embodiment correspond to the receptacle 4 of the first embodiment shown in FIG. 1 and described above.
- the pressure adjusting devices 6 used in the second exemplary embodiment largely correspond to those shown in FIG. 1 and described above
- Pressure adjustment device 6 of the first embodiment wherein two different variants of multi-piece closing elements 14 and spring plates 12 are shown. Below, these different variants will be described.
- Spring plate 12 and the closing element 14 so formed in several pieces that a spherical end portion of the closing element 14 comes with a correspondingly shaped mating surface of the spring plate 12 in abutment. This can advantageously misalignment between the spring 10 and the
- Spring plate 12 and the closing element 14 so formed in several pieces, that a cylindrical end portion of the closing element 14 comes with a correspondingly shaped counter surface of the spring plate 12 in abutment.
- the spring plate 12 is formed here approximately hat-shaped. This allows the closing element 14 with his
- a pressure relief valve with a cast housing the valve seat is surface hardened.
- a valve seat can be arranged such that it is accessible exclusively from a single side for surface hardening and / or for post-processing by means of a tool, in particular essentially in the closing direction of the closing element.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Safety Valves (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15816434T PL3234426T3 (pl) | 2014-12-16 | 2015-12-16 | Zawór ograniczający ciśnienie |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014225983.5A DE102014225983A1 (de) | 2014-12-16 | 2014-12-16 | Druckbegrenzungsventil |
PCT/EP2015/080020 WO2016097000A1 (de) | 2014-12-16 | 2015-12-16 | Druckbegrenzungsventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3234426A1 true EP3234426A1 (de) | 2017-10-25 |
EP3234426B1 EP3234426B1 (de) | 2019-06-26 |
Family
ID=55024111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15816434.3A Active EP3234426B1 (de) | 2014-12-16 | 2015-12-16 | Druckbegrenzungsventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US10890267B2 (de) |
EP (1) | EP3234426B1 (de) |
CN (1) | CN107002897B (de) |
DE (1) | DE102014225983A1 (de) |
PL (1) | PL3234426T3 (de) |
WO (1) | WO2016097000A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11835154B2 (en) * | 2021-07-23 | 2023-12-05 | Hamilton Sundstrand Corporation | Ringless zero clearance closure |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1578046A (en) * | 1924-02-16 | 1926-03-23 | Logan Henry Havelock | Safety valve for hot-water heaters |
US2071749A (en) * | 1936-02-20 | 1937-02-23 | Gen Fire Extinguisher Co | Valve |
US2227629A (en) * | 1937-12-14 | 1941-01-07 | Bliss E W Co | Pressure control valve and the like |
US2256365A (en) * | 1941-04-29 | 1941-09-16 | Foster Engineering Co | Dual relief valve |
JPS5524980A (en) * | 1978-08-14 | 1980-02-22 | Mitsubishi Heavy Ind Ltd | Cast iron and spheroidal graphite cast iron surface hardening |
DE4429804A1 (de) | 1994-08-23 | 1996-02-29 | Johnson Service Co | Verfahren zur Herstellung von in Heizungs-, Lüftungs- und Klimaanlage eingesetzten Serienventilen |
DE19644356C2 (de) | 1996-10-25 | 1999-02-18 | Baelz Gmbh Helmut | Sitzventil mit eingegossenem Ventilsitz |
DE19804752A1 (de) * | 1998-02-06 | 1999-08-12 | Mannesmann Rexroth Ag | Sitzventil |
DE102004040359B4 (de) | 2004-08-20 | 2011-06-16 | Helmut Bälz GmbH | Regelarmatur |
WO2006026564A2 (en) * | 2004-08-27 | 2006-03-09 | Vetco Gray Inc. | Low friction coatings for load bearing surfaces |
CN2786395Y (zh) * | 2005-04-07 | 2006-06-07 | 王新民 | 一种异型薄壁阀门 |
CN2839690Y (zh) | 2005-07-22 | 2006-11-22 | 上海立新液压有限公司 | 叠加式溢流阀 |
EP2463391A1 (de) * | 2010-12-09 | 2012-06-13 | Perkins Engines Company Limited | Induktiongehärtete Komponenten mit nicht-gehärteten Bohrungen |
CN202612661U (zh) * | 2012-01-19 | 2012-12-19 | 新昌县利永达制冷机械有限公司 | 球墨铸铁空调截止阀 |
FR3039620B1 (fr) * | 2015-07-28 | 2017-08-25 | Poclain Hydraulics Ind | Dispositif de limitation de pression notamment pour un systeme d'assistance de vehicule |
-
2014
- 2014-12-16 DE DE102014225983.5A patent/DE102014225983A1/de not_active Withdrawn
-
2015
- 2015-12-16 PL PL15816434T patent/PL3234426T3/pl unknown
- 2015-12-16 CN CN201580068495.4A patent/CN107002897B/zh active Active
- 2015-12-16 EP EP15816434.3A patent/EP3234426B1/de active Active
- 2015-12-16 WO PCT/EP2015/080020 patent/WO2016097000A1/de active Application Filing
- 2015-12-16 US US15/535,780 patent/US10890267B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20190093782A1 (en) | 2019-03-28 |
WO2016097000A1 (de) | 2016-06-23 |
CN107002897A (zh) | 2017-08-01 |
WO2016097000A9 (de) | 2017-03-30 |
CN107002897B (zh) | 2021-08-03 |
PL3234426T3 (pl) | 2019-11-29 |
DE102014225983A1 (de) | 2016-06-16 |
US10890267B2 (en) | 2021-01-12 |
EP3234426B1 (de) | 2019-06-26 |
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