WO2016150831A1 - Soupape de limitation de pression - Google Patents

Soupape de limitation de pression Download PDF

Info

Publication number
WO2016150831A1
WO2016150831A1 PCT/EP2016/055906 EP2016055906W WO2016150831A1 WO 2016150831 A1 WO2016150831 A1 WO 2016150831A1 EP 2016055906 W EP2016055906 W EP 2016055906W WO 2016150831 A1 WO2016150831 A1 WO 2016150831A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
pressure
housing body
valve housing
pressure relief
Prior art date
Application number
PCT/EP2016/055906
Other languages
German (de)
English (en)
Inventor
Toni Jankowski
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN201680025977.6A priority Critical patent/CN107532738A/zh
Publication of WO2016150831A1 publication Critical patent/WO2016150831A1/fr

Links

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
    • 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

Definitions

  • the invention relates to a pressure relief valve having a valve piston, which is movably guided in a valve housing body against a closing force of a closing spring to a pressure-dependent connection between a loadable by a high pressure through hole and at least one
  • Pressure limiting valve in particular for a common rail system, known, with a valve carrier, a valve insert connected to the valve carrier, a valve insert in a guide bore slidably mounted valve piston and a closing spring, with a closing force in the closing direction of the valve piston and the valve piston acts via the closing force on a valve seat, via which a hydraulic connection via a valve chamber between a high-pressure chamber and a low-pressure space is established as soon as the force acting in the opening direction on the valve piston hydraulic force exceeds the closing force of the closing spring, wherein between the valve chamber and the low-pressure chamber in the closed Valve seat one
  • the object of the invention is to provide a pressure relief valve with a
  • Valve piston which is movably guided in a valve housing body against a closing force of a closing spring to a pressure-dependent connection between to provide a can be acted upon by a high pressure through hole and at least one through hole, which is acted upon by a low pressure to create, which is simple and / or inexpensive to produce.
  • the object is at a pressure relief valve with a valve piston which is guided in a valve housing body against a closing force of a closing spring movable to a pressure-dependent connection between a can be acted upon by a high pressure through hole and at least one
  • valve housing body thus performs at least one double function.
  • the valve housing body serves to guide the valve piston.
  • the valve housing body receives the closing spring.
  • the valve housing body is advantageously acted upon only with low pressure. As a result, the manufacturing requirements for the valve body reduce considerably.
  • a preferred embodiment of the pressure relief valve is characterized in that the valve housing body has substantially the shape of a circular cylinder jacket which is open at a piston leading end and closed at an opposite end to the piston leading end.
  • the pressure equalization passage is performed, for example, as a central bore and allows pressure equalization between the receiving space for the closing spring and an environment of the pressure relief valve when the valve piston in the
  • Valve housing body moves.
  • the through-hole acted upon by low pressure preferably extends in a radial direction.
  • the term radial refers to a longitudinal axis of the pressure relief valve.
  • the longitudinal axis of the pressure relief valve preferably corresponds to a movement axis of
  • Valve piston Radial means transverse to the longitudinal axis or axis of movement.
  • the arrangement of the pressurizable through-hole through hole in the piston guide, the construction of the pressure relief valve can be further simplified.
  • a sealing plate having a sealing geometry, which cooperates for the representation of a valve seat with a sealing geometry on the valve piston.
  • the sealing geometry on the sealing plate comprises for
  • a sealing edge or a sealing surface which cooperates with a sealing surface or a sealing edge on the valve piston, which
  • Sealing geometry represents the valve piston.
  • the combination of the described valve housing body with the sealing plate is a simple way of clearly differentiating the components of the
  • valve piston a part of the valve piston, in particular an end of a pressure pin, which is formed on the valve piston.
  • End face has a circumferential sealing edge.
  • the shape of the circular disc is simple and inexpensive to produce.
  • the circumferential sealing edge simplifies the High pressure seal during assembly of the pressure relief valve.
  • the high-pressure through-hole is preferably a central through-hole in the circular disk.
  • Valve body is centered. As a result, the assembly and transport of the pressure relief valve are considerably simplified.
  • the shape of the recess is advantageously adapted to the shape of the sealing plate.
  • a further preferred embodiment of the pressure relief valve is characterized in that the sealing plate, preferably by a
  • Flare transport safe connected to the valve body.
  • the sealing plate is clamped between the valve housing body and a corresponding mounting body or
  • Another preferred exemplary embodiment of the pressure limiting valve is characterized in that the sealing plate has a circumferential contact and / or adjustment shoulder on an end face facing the valve housing body. Due to the investment function of the shoulder is a sufficient
  • the invention further relates to a valve housing body and / or a sealing plate for a previously described pressure relief valve.
  • Valve body and sealing plate are sold separately.
  • a major advantage is the cost reduction of the overall assembly. On the one hand, this is achieved by minimizing the material which bears against the high pressure. Thus, the price of the raw material is reduced, namely due to the lower mass and the smaller dimensions of the components. Furthermore, the processing steps required for the high-pressure-resistant material, such as grinding, hard turning, are eliminated or shortened.
  • Another cost-cutting measure is the flange, which serves as a transport protection of the components. This further simplifies the manufacturing process.
  • Figure 1 shows an embodiment of a pressure relief valve in longitudinal section
  • FIG. 2 shows the pressure relief valve of Figure 1 in a ninety-degree offset longitudinal section.
  • a pressure relief valve 1 is shown with a valve piston 3 in two different longitudinal sections.
  • the valve piston 3 is movable in the direction of a longitudinal axis 4 in a valve housing 5 back and forth.
  • a closing spring 6, which is designed as a helical compression spring, the valve piston 3 is biased in the valve housing 5 in Figures 1 and 2 downwards.
  • the valve housing 5 comprises a valve housing body 8 and a sealing plate
  • the valve piston 3 has a pressure pin 10 at its lower end in FIGS. 1 and 2. With the pressure pin 10, the valve piston 3 protrudes into a central through hole 12, which is provided in the sealing plate 9. At one in the figures 1 and 2 upper end of the through hole 12, a valve seat 11 is provided.
  • the valve seat 11 is closed in Figures 1 and 2. When the valve seat 11 is closed, one at the lower end in FIGS. 1 and 2.
  • Valve piston 3 in particular of the pressure pin 10, formed sealing surface on a sealing edge, which at the upper end of the through hole 12 at the
  • valve seat 11 When the valve seat 11 is open, the connection between the through hole 12 and the interior 14 of the valve housing 5 is released.
  • the interior 14 of the valve housing 5 communicates with through-holes 15, 16, which, as seen in FIG. 2, are provided in the valve housing body 8.
  • the valve housing body 8 has substantially the shape of a
  • Circular cylinder shell 20 which is open at a piston leading end 21. At an opposite end 22 of the circular cylinder shell 20 is closed by a bottom 23. In the bottom 23 is a central
  • Pressure equalization port 24 is provided, which represents a pressure equalization passage between a receiving space 25 for the closing spring 6 and the environment of the pressure relief valve 1.
  • the receiving space 25 for the closing spring 6 extends in the axial direction between the bottom 23 and a guide portion 26 in the
  • Valve housing body 8 The term axial refers to the longitudinal axis 4. Axial means in the direction or parallel to the longitudinal axis 4. Analog means radially transversely to the longitudinal axis 4th
  • the guide section 26 serves to guide a guide sleeve 13, which is provided on the valve piston 3. With the guide sleeve 13, the valve piston 3 in the guide portion 26 of the valve body 8 back and forth, that is, in Figures 1 and 2 down and up, out.
  • the guide sleeve 13 With the guide sleeve 13, the valve piston 3 in the guide portion 26 of the valve body 8 back and forth, that is, in Figures 1 and 2 down and up, out.
  • Guide sleeve 13 of the valve piston 3 is integrally connected to the pressure pin 10.
  • the lower end of the closing spring 6 in FIGS. 1 and 2 is received in the guide sleeve 13 of the valve piston 3.
  • the flats 27, 28 represent, for example, attack surfaces for a tool, with the aid of which the pressure relief valve 1 can be mounted.
  • the circular cylinder jacket 20 of the valve housing body 8 has a threaded portion 29 on the outside.
  • the threaded portion 29 allows screwing the pressure relief valve 1 in a corresponding
  • Threaded recess in particular threaded bore.
  • the sealing plate 9 has the shape of a circular disk 30 with a sealing edge 31 on its outer end face.
  • the circular disc 30 is accommodated in a recess 34 at the piston guide end 21 or at the lower end of the valve housing body 8 in FIGS. 1 and 2.
  • the sealing plate 9 or circular disk 30 has an abutment and / or adjusting shoulder 36 on its end face 35 facing the valve housing body 8.
  • the sealing plate 9 rests against the valve housing body 8 with the contact and / or adjustment shoulder 36.
  • a pressure-tight connection between the sealing plate 9 and the valve housing body 8 is created.
  • the closing force or opening force of the pressure relief valve 1 can be adjusted via the height of the contact and / or adjustment shoulder 36, that is to say over a dimension of the shoulder in the axial direction.
  • an optional dial 40 between the upper end of the closing spring 6 and the bottom 23 of the valve body 8 can be omitted.
  • the sealing plate 9 is secured by means of a flange 38 transport safe to the valve housing 8. During assembly, the sealing plate 9 between a mounting surface (not shown) and the valve body 8 is clamped when it is screwed, for example by means of the threaded portion 29, in a corresponding threaded hole.
  • a mounting surface not shown
  • the valve body 8 is clamped when it is screwed, for example by means of the threaded portion 29, in a corresponding threaded hole.
  • Valve housing body 8 inserted and braced by the sealing plate 9 from below.
  • the sealing plate 9 in the recess 34 which represents a fit, centered and by the flare 38 with the
  • Valve housing body 8 securely connected transport.
  • sealing plate 9 which is also referred to as a high-pressure low-pressure sealing plate
  • valve piston 3 in this structure, the only components with contact to the high pressure. All other elements of the pressure relief valve 1 are surrounded by low pressure.
  • the sealing plate 9 in the form of the circular disc 30 has a simple contour.
  • Three important elements of the sealing plate 9 are the sealing edge 31, the

Abstract

L'invention concerne une soupape de limitation de pression (1) qui comporte un piston de soupape (3) qui est guidé mobile dans un corps de soupape (8) à l'encontre de la force de fermeture d'un ressort de fermeture (6) pour libérer en fonction de la pression une liaison entre un trou débouchant (12) pouvant être soumis à une haute pression et au moins un trou débouchant (15, 16) pouvant être soumis à une basse pression. L'objectif de l'invention est de créer une soupape de limitation de pression qui soit de conception simple et/ou de fabrication économique. À cet effet, le corps de soupape (8) dans lequel le piston de soupape (3) est guidé mobile à l'encontre de la force de fermeture du ressort de fermeture (6) délimite un espace de réception (25) pour le ressort de fermeture (6).
PCT/EP2016/055906 2015-03-25 2016-03-18 Soupape de limitation de pression WO2016150831A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680025977.6A CN107532738A (zh) 2015-03-25 2016-03-18 限压阀

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015205376.8 2015-03-25
DE102015205376.8A DE102015205376A1 (de) 2015-03-25 2015-03-25 Druckbegrenzungsventil

Publications (1)

Publication Number Publication Date
WO2016150831A1 true WO2016150831A1 (fr) 2016-09-29

Family

ID=55587273

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/055906 WO2016150831A1 (fr) 2015-03-25 2016-03-18 Soupape de limitation de pression

Country Status (3)

Country Link
CN (1) CN107532738A (fr)
DE (1) DE102015205376A1 (fr)
WO (1) WO2016150831A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29716274U1 (de) * 1997-09-10 1999-01-14 Lorentz Bernt Überströmventil
DE202006009403U1 (de) * 2006-06-14 2006-08-17 Marco Systemanalyse Und Entwicklung Gmbh Druckbegrenzungsventil
EP1895213A1 (fr) * 2006-09-04 2008-03-05 HAWE Hydraulik GmbH & Co. KG Soupape
DE102009005768A1 (de) * 2009-01-23 2010-07-29 Sauer-Danfoss Gmbh & Co Ohg Druckregelung einer hydraulischen Antriebseinheit
DE102011083475A1 (de) * 2011-09-27 2013-03-28 Robert Bosch Gmbh Hydraulikventil für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem
DE102011089844A1 (de) 2011-12-23 2013-06-27 Robert Bosch Gmbh Druckbegrenzungsventil
FR2989430A1 (fr) * 2012-04-13 2013-10-18 Schrader Valve de limitation de pression a double seuil
EP2728163A1 (fr) * 2012-10-30 2014-05-07 Delphi International Operations Luxembourg S.à r.l. Agencement de soupape

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1016212B (zh) * 1988-02-01 1992-04-08 理查德福斯古鲁宾劳斯包股份有限公司 带乾式弹簧腔的限压阀
ZA927976B (en) * 1992-04-21 1993-04-26 Dams Joern Maschf Pressure relief valve.
CN2833288Y (zh) * 2005-08-16 2006-11-01 浙江大学 油脂集中润滑系统的溢流阀
KR20080015653A (ko) * 2006-08-16 2008-02-20 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 압력제어밸브

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29716274U1 (de) * 1997-09-10 1999-01-14 Lorentz Bernt Überströmventil
DE202006009403U1 (de) * 2006-06-14 2006-08-17 Marco Systemanalyse Und Entwicklung Gmbh Druckbegrenzungsventil
EP1895213A1 (fr) * 2006-09-04 2008-03-05 HAWE Hydraulik GmbH & Co. KG Soupape
DE102009005768A1 (de) * 2009-01-23 2010-07-29 Sauer-Danfoss Gmbh & Co Ohg Druckregelung einer hydraulischen Antriebseinheit
DE102011083475A1 (de) * 2011-09-27 2013-03-28 Robert Bosch Gmbh Hydraulikventil für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem
DE102011089844A1 (de) 2011-12-23 2013-06-27 Robert Bosch Gmbh Druckbegrenzungsventil
FR2989430A1 (fr) * 2012-04-13 2013-10-18 Schrader Valve de limitation de pression a double seuil
EP2728163A1 (fr) * 2012-10-30 2014-05-07 Delphi International Operations Luxembourg S.à r.l. Agencement de soupape

Also Published As

Publication number Publication date
CN107532738A (zh) 2018-01-02
DE102015205376A1 (de) 2016-09-29

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