EP0717201B1 - Système de protection dans une installation sous pression - Google Patents

Système de protection dans une installation sous pression Download PDF

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Publication number
EP0717201B1
EP0717201B1 EP95116660A EP95116660A EP0717201B1 EP 0717201 B1 EP0717201 B1 EP 0717201B1 EP 95116660 A EP95116660 A EP 95116660A EP 95116660 A EP95116660 A EP 95116660A EP 0717201 B1 EP0717201 B1 EP 0717201B1
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EP
European Patent Office
Prior art keywords
valve
pressure
consumer
load circuit
additional
Prior art date
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Application number
EP95116660A
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German (de)
English (en)
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EP0717201A3 (fr
EP0717201A2 (fr
Inventor
Stefan Herzog
Henning Förster
Karl-Heinz Deike
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ZF CV Systems Hannover GmbH
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Wabco GmbH
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Publication of EP0717201A3 publication Critical patent/EP0717201A3/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems

Definitions

  • the invention relates to a protection system according to the preamble of claim 1.
  • the overflow valves of a protection system of the type mentioned kind usually have when filling the pressure medium system opening pressures different from atmospheric pressure, what inevitable manufacturing and adjustment tolerances is due. That can except for one uneven pressure build-up when filling the consumer circuit cause that in the event of a defect in the consumer circuit, whose overflow valve when filling the pressure medium system of atmospheric pressure the lower opening pressure, the total flow of Supply device in the defective consumer group and from this flows into the atmosphere and the intact Consumer group is not operational.
  • the invention has for its object a protection system of the type mentioned above with simple means to train that it is both large and small Flow rates of the supply facility when intact Consumer circles an even pressure build-up and good filling safety in the event of a defective consumer circuit of the intact consumer group guaranteed.
  • the invention enables a universally applicable Protection system and thereby a considerable rationalization effect.
  • the invention is for pressure medium systems of the type mentioned Type for use in all technical fields and in connection with all liquid and gaseous Suitable for pressure media.
  • Compressed air is often used as a pressure medium used.
  • An important area of application in connection with compressed air offer vehicle pressure systems.
  • the protection system mentioned at the beginning can be one or more additional overflow valves for one or more additional, compared to those in the preamble of the claim 1 mentioned original consumer groups subordinate, consumer groups are supplemented. This will below using the example of an additional overflow valve and an additional group of consumers. These statements apply to one or more further additional overflow valves and the assigned Consumer groups in full with.
  • the overflow valve of the subordinate consumer circuit to the overflow valves of the original consumer groups arranged in parallel.
  • the second option is the overflow valve of the additional consumer circuit the relief valves and the assigned Direct connections from the original consumer groups each one towards the additional Subordinate consumer circuit permeable check valve.
  • a pressure medium system is given by a vehicle pressure medium system
  • the original (and priority) consumer circles service brake circuits and their additional (and subordinate) Consumer circuit
  • a spring-loaded parking brake circuit is when filling the pressure medium system from atmospheric pressure a certain performance of the service brake circuits is requested before the spring-loaded parking brake circuit sufficient pressure to release the spring brake having.
  • Fig. 1 shows the solid lines schematically Basic version of a protection system for a pressure medium system with two consumer groups (10, 21), which by Storage containers are symbolized.
  • the protection system contains for one consumer group (10) an overflow valve (4), a direct connection (29) and a shut-off device (12).
  • the overflow valve (4) is between a supply device (1) and the Consumer group (10) arranged.
  • the supply device (1) contains in a known manner a pressure generator and any necessary pressure treatment devices, Pressure control and pressure limiting devices.
  • the direct connection (29) is bypassing the protective valve (4), i.e. parallel to this, also between the supply facility (1) and the consumer group (10) arranged.
  • the overflow valve (4) and the direct connection (29) are connected to the supply device (1) connected via a supply line (2, 28).
  • the shut-off device (12) is in the direct connection (29) arranged so that it controls their passage.
  • the shut-off device (12) is not closer by means of two designated pressure-dependent control devices from two pressures controllable. Your is a control device via a control line (11) with one consumer circuit (10), their other control device is over one Control line (20) with the other consumer circuit (21) connected.
  • the shut-off device (12) is designed that in the case of pressure equality, i.e. also at atmospheric pressure, the passage of the Direct connection (29) opens and this passage at one higher pressure in the control line (20) than in the Control line (11) closes. In other words: the shut-off device (12) is in favor of a pressure difference of the consumer group not assigned to it (21) into a direct connection passage (29) closing blocking position switched.
  • the transmission capacity of the direct connections (26, 29) is so limited that in the event of a defect in one Consumer group (10 or 21) with every possible flow rate the supply device (1) in the defective Consumer circuit (10 or 21) flow rate in the assigned direct connection (29 or 26) one Back pressure creates the effect described below he brings.
  • This limitation in transmission capacity by appropriate dimensioning of the direct connections, but also by throttling in the direct connections, such as they are indicated with the reference symbols (31 or 24), be achieved.
  • Possible chokes can, like shown, upstream of the shut-off devices (12 or 19), but also arranged downstream of the same his.
  • shut-off devices (12, 19) The inevitable unevenness of pressure build-up in consumer circles would be increased. This can be done through further training of the shut-off devices (12, 19) be that these only at a predetermined value of Pressure difference are switched into the blocking position. By this training will be pressure differences up to the predetermined one Value permitted, switching of the shut-off device (12 or 19) delayed accordingly, the one described Increase in the unevenness of the pressure build-up avoided.
  • shut-off devices (12, 19) must this training be specially trained. Your switching must already be in the blocking position at the pressure difference insert that are caused by the dynamic pressure who - as described above - with a defective consumer group (10 or 21) in its direct connection (29 or 26) and in the intact consumer group (21 or 10) builds up. With increasing pressure difference the shut-off devices must be in the locked position continuously approach them until they reach the predetermined one Reach the pressure difference value. With others Words the shut-off devices (12, 19) in this Training for pressure differences below the predetermined Worth as continuously narrowing chokes be formed at the predetermined value of Pressure difference reach the (complete) blocking position. This training also builds up in this Case in the intact consumer group (26 or 29) to safely open the assigned overflow valve (23 or 4) leading consumer circuit pressure.
  • shut-off devices (12 or 19) are trained in this way.
  • the dashed line shows further developments of the Embodiment.
  • Direct connections (29 or 26) can have auxiliary check valves (30 or 27) may be arranged.
  • This Secondary check valve or these secondary check valves prevent that via the respectively assigned direct connection from the assigned consumer group (10th or 21) pressure medium to the supply device (1) or in the other consumer group (21 or 10) can flow.
  • the - albeit very low - flow resistance of the secondary check valve (s) (30 or 27) causes an increase in the above-mentioned dynamic pressure and therefore affects the behavior of the protection system advantageous in the event of a defective consumer circuit pressure.
  • the embodiment shows as further developments two arrangements of additional relief valves and these assigned additional consumer groups. These orders can exist alternatively, but also simultaneously his.
  • this is additional Overflow valve (8) via an additional branch (5) in this case with (2, 5, 28) supply line between the supply device (1) and the associated additional consumer circuit (9) arranged.
  • the additional overflow valve (8) and the associated one additional consumer groups (9) are suitable Measures compared to the original overflow valves (4, 23) and the assigned consumer groups (10, 21) subordinate, for example by one opposite the opening pressures of the overflow valves (4, 23) of the original Consumer groups (10, 21) increased opening pressure.
  • the additional overflow valve (15) In the second arrangement of the additional overflow valve (15) are the original overflow valve (4) and the associated direct connection (29) a check valve (14) and the other original overflow valve (23) and the assigned direct connection (26) downstream of a check valve (18).
  • the additional Overflow valve (15) with the outputs of the Check valves (14, 18) connected, and consequently between each check valve (14, 18) and the additional one Consumer circuit (17) arranged.
  • the check valves (14, 18) are arranged so that they are in the direction of additional overflow valve (15) or the additional Consumer group (17) are permeable. In this arrangement receives the additional consumer group (17) Pressure medium, which was previously one of the original overflow valves (4, 23) or one of them Direct connections (29, 26) has happened.
  • the additional overflow valve also in this arrangement (15) and the associated additional consumer group (17) compared to the original overflow valves (4, 23) and the assigned consumer groups (10.21) secondary.
  • the opening pressure of the additional overflow valve (15) between the Pressure which is at its entrance when filling atmospheric pressure only set via direct connections can always be up to full or nominal pressure. In this arrangement it is determined by considerations who are not interested in the present context.
  • Check valves (14, 18) are responsible for one (Back) flow from the additional consumer group (17) into the original consumer groups (10, 21), but also a (cross) flow between the original ones To prevent consumer groups (10, 21).
  • the overflow valves (8, 15) are direct connections not provided. Such direct connections but are possible in a manner not shown and can by appropriate design of their flow capacity for Interpretation of subordination.
  • the additional overflow valve can (8 or 15) and the respective assigned consumer group (9 or 17) for several additional consumer groups stand. This is due to broken off and with (7) or (13) designated lines indicated. In this case it can be appropriate, a cross flow between the additional Consumer circles through the relevant overflow valves upstream or downstream check valves prevent.
  • check valves are with the reference numerals (6 or 16).
  • the additional Overflow valve (s) which is a parallel arrangement to the original Overflow valves (4, 23)
  • the original overflow valves (4, 23) can also Check valves (3, 25) are connected upstream or downstream, a backflow to the supply device (1) as well as a cross flow between the consumer circles, including roughly parallel additional ones, prevent.
  • the illustration shows the protection system in dissolved form Construction.
  • the existing overflow valves, the shutdown devices and the existing check valves are independent units and the associated ones Pressure medium lines and the existing direct connections, including the chokes, an open one Form line system.
  • an overflow valve comes in any known suitable type of construction, z. B. according to the WABCO Westinghouse publication "Overflow valve 434 100", August 1973 edition.
  • the there shown version "without backflow” includes an approximately assigned check valve.
  • a shut-off device comes, for example, any suitable pressure difference controlled 2/2-way valve into consideration. The shut-off devices but must be linked so that one remains consistent when the other is in the locked position is.
  • All components of the protection system can also be in compact design combined into a "multi-circuit protection valve" be and then form an assembly similar of those already mentioned in Fig. 3 DE 34 34 884 A1 is shown.
  • Fig. 2 shows an embodiment of the shut-off devices (12 and 19).
  • the housing (42) can Specially provided for the shut-off devices (12 and 19) but it can, in the case of the compact design of the protection system, including that common to all components Housing.
  • each consumer circuit chamber (46 or 41) opens out the viewer's point of view, from the right or from the left one of the direct connections (29 or 26).
  • the mouths Valve seats are surrounding in the housing in a known manner arranged. The following are simplicity for the sake of this valve seats labeled "mouth (s)".
  • the mouths (47 and 40) of the direct connections to be understood in this way (29 and 26) are coaxial with each other.
  • the consumer circuit chambers (41, 46) are through one Housing opening running coaxially to the mouths (40, 47) (43) connected to each other. Besides, they are Consumer circuit chambers (41, 46) each with one of the original consumer groups (10 or 21) and with the outlet of the assigned overflow valve (4th or 23) connected.
  • each has its own unspecified, sealing element more common Design for sealing against each consumer circuit chamber (41 and 46) are provided.
  • This type of sealing secures the consumer groups (10, 21) against each other from, as a penetrating approximately on a sealing element Leakage not in the other consumer group can cross, but via an unspecified breathing opening the housing opening (43) to the atmosphere, or, depending on the type of pressure medium, in a collection container can escape with atmospheric pressure.
  • the sealing of the closing body can be based on this advantage (44) but can also be carried out with only one sealing element.
  • the right end position of the Closing body (44) is by striking the Mouth (47) of the direct connection (29) determined.
  • Corresponding is the left end position from the viewer's point of view of the closing body (44) is determined.
  • the stop faces or stop lines of the closing body (44) are dimensional and formed from the material so that the closing body (44) over these areas or lines with the respective assigned mouth (47 or 40) of the direct connections (29 and 26) each form a valve (44, 47 or 44, 40), which is the passage between the respective direct connection (29 or 26) and the respective consumer circuit chamber (46 or 41) and thus the respective Consumer group (10 or 21) controlled. It's on hand that the mouths (47 and 40) of the material forth to form these valves (44, 47 and 44, 40) must be suitable.
  • the consumer circuit pressure predominates in a consumer circuit chamber (46 or 41) the consumer circuit pressure in the other consumer circuit chamber (41 or 46), so moves the higher consumer circuit pressure the closing body (44) into the end position, which is defined by the mouth (40 or 47) the other consumer group (10 or 21) assigned direct connection (29 or 26) is determined. If the pressure in the consumer circuit chambers (41, 46), also at atmospheric pressure in the same the shooting body (44) has a central position releasing both valves one, but not necessarily the geometric Must be middle position.
  • shut-off devices (12 or 19) 1 in a general form Shut-off devices as two pressure difference controlled Designate 2/2-way valves that are linked so that one is in its open position when that other is in its locked position.
  • At least one shut-off device (12 or 19) only at a predetermined value of the pressure difference between the consumer circuit presses in their locked position, in which the relevant valve (44, 47 or 44, 40) is closed, is switched, for example by a switch spring (45).
  • the switch spring (45) is supported on the one hand on the closing body (44) and on the other hand on the housing (42) and determined by their Force in the assigned end position of the closing body (44) the pressure difference at which the higher consumer circuit pressure the closing body against the force of the switching spring (45) has moved to this end position.
  • the switch spring (45) is necessary to achieve the above-mentioned characteristic the continuously narrowing throttle in its spring characteristic be designed accordingly.
  • Switch springs (45) are in the configuration described shown on both sides, but it can, if the Use case this requires, even on one side only Switch spring (45) may be provided.
  • FIG. 3 shows the example of, from the perspective of the viewer, on the right-hand side a training course on the design with switching spring (45) according to FIG. 2.
  • the closing body (52) is favored by a pressure difference the consumer circuit pressure in the, not shown, connected to the other consumer group (21), Consumer circuit chamber (41) from the perspective of the beholder shifted to the right, shifts end facing the secondary valve member (54) against the secondary valve member (54), press this against the muzzle (47), thereby closes the auxiliary check valve (30) and keep it closed regardless of the pressures in the direct connection (29) and in the consumer circuit chamber (46).
  • the closing spring (51) can be in a not shown Support way directly on the housing (42). In the illustration but is between the closing spring (51) and the housing (42) a spring plate (50) is arranged.
  • the spring plate (50) is due to the switching spring (45). He offers a simple solution for simultaneous arrangement the closing spring (51) and the switching spring (45). is the closing body (52), as shown, in one Middle position, support both springs (45) and (51) on the spring plate (50) on the housing (42).
  • the characteristic of the shut-off device (12) follows the advantage that the switching spring (45) is correspondingly weaker and thus be made cheaper and smaller can.
  • the aforementioned gripping of the spring plate (50) by the Carrying shoulder (53) of the valve body (52) takes place, after doing an empty shift (x) Has.
  • the empty shift (x) serves to compensate for any Manufacturing tolerances between the closing body (52) and Housing (42).
  • the configuration according to FIG. 3 is a configuration trained, in which the for subordination of the additional overflow valve (15) and the associated one additional consumer group (17) required Check valves (14, 18) are integrated.
  • the housing opening (43) in FIG. 2 and 3 to an additional consumer circuit chamber (64) trained.
  • To form the additional consumer circuit chamber (64) is between the consumer circuit chamber (46) and the interior of the housing opening in the here with (65) designated housing the inside of the Breakthrough opening facing the valve seat (62) arranged, namely coaxial to the mouth (47) of the Direct connection (29) and thus also coaxial to the mouth (40) on the left, from the perspective of the beholder Page.
  • the additional consumer circuit chamber (64) is one unspecified connection with the additional Additional consumer group (17) Overflow valve (15) connected to the inlet.
  • an axially displaceable valve body (60) is arranged within the additional consumer circuit chamber (64). This forms with the valve seat fixed to the housing (62) the check valve (14) of FIG. 1, with its output - About the additional consumer circuit chamber (64) - that additional overflow valve (15), namely its inlet, connected is.
  • the valve body (60) has a not designated Cavity that extends axially through the valve body (60) extends through and coaxial to the mouth (47) of the Direct connection (29) and to the valve seat (62). This cavity is sealed and axially displaceable the closing body (52) guided.
  • the valve body (60) is one in the additional Consumer circuit chamber (64) arranged closing spring (63) against the valve seat (62) and thus in the closing direction of the check valve (14) biased.
  • the closing spring (63) is based on the corresponding valve body from the viewer's perspective, the left Side off and therefore also serves as a closing spring check valve (18) on the left.
  • the empty displacement is to be carried out (x) of the closing body (52) may be possible, so how shown within the cavity of the valve body (60) to be provided.
  • the overflow valve (14) When filling the pressure medium system from atmospheric pressure the overflow valve (14) opens when the Direct connection (29) in the consumer circuit chamber (46) and thus in the assigned consumer group (10) Consumer circuit pressure has built up that of the Closing spring (63) exerted on the valve body (62) Closing force overcomes.
  • the Closing spring (63) exerted on the valve body (62) Closing force overcomes.
  • the closing spring (63) are designed so strongly that they are one over the one to perfect Closing the check valve (14) required Closing force force exerted on the valve body (60) exercises. This is when filling the pressure medium system of atmospheric pressure the value of the consumer circuit pressure in the consumer group (10) and in the assigned consumer circuit chamber (46) which can be opened of the overflow valve (4) is raised. As a result, the priority of the consumer group (10) compared to the additional consumer group (17) and the associated additional overflow valve (15), measured in pressure units, is enlarged.
  • additional consumer group 1 can between the assigned Overflow valve (8) and the supply device (1) other facilities such as a pressure limiting device, be arranged in In the event of subordination of the additional consumer group (17) such additional facilities can be set up between the Check valves (14) and (18) and the associated additional Overflow valve (15) can be arranged without the above statements would be affected.
  • additional facilities such as a pressure limiting device

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)

Claims (10)

  1. Système de protection pour une installation sous pression comprenant deux circuits utilisateurs (10, 21), avec une soupape de décharge (4 ou 23) pour chacun des circuits utilisateurs (10 ou 21), disposée entre une source d'alimentation (1) et le circuit utilisateur respectif correspondant (10 ou 21) dans lequel, pour chaque circuit utilisateur (10 ou 21) est prévue une liaison directe (29, 26) entourant la soupape de décharge respective (4 ou 23) avec une capacité de passage limitée, caractérisée en ce que , dans chacune des liaisons directes (29 ou 26) est monté un dispositif d'arrêt (12 ou 19) commandé par les pressions des deux circuits utilisateurs (10, 21) et qui est commuté en position de fermeture lorsque la pression dans le circuit utilisateur (21 ou 10) qu'il ne contrôle pas, est supérieure à celle du circuit utilisateur (10 ou 21) qu'il contrôle.
  2. Système de protection selon la revendication 1,
    caractérisé en ce que, dans l'une, au moins, des liaisons directes (29 ou 26) est placé en direction du circuit utilisateur (10 ou 21) correspondant, un clapet anti-retour (30 ou 27) secondaire perméable.
  3. Système de protection selon l'une des revendications précédentes,
    caractérisé en ce que l'un, au moins, des dispositifs d'arrêt (12, 19) n'est commuté en position de fermeture que pour une valeur prédéterminée de la différence de pression.
  4. Système de protection selon la revendication 1 ou 2,
    caractérisé en ce qu'il présente, pour la configuration des dispositifs d'arrêt (12, 19), les caractéristiques suivantes :
    a) à l'intérieur d'un carter (42), chacune des liaisons directes (29 ou 26), respectivement coaxiale à l'autre liaison directe (26 ou 29), débouche dans une chambre de circuit utilisateur (46 ou 41) reliée au moins à la sortie de la soupape de décharge (4 ou 23) respective;
    b) les chambres de circuit utilisateur (46 ou 41) sont en communication par l'intermédiaire d'un perçage (43) du carter coaxial aux embouchures (47 ou 40) des liaisons directes (29 ou 26);
    c) dans le perçage (43) du carter est guidé, d'une façon étanche, un élément de fermeture (44) mobile dans le sens axial, fermant, dans une position terminale, l'embouchure (47 ou 40) d'une liaison directe (29 ou 26).
  5. Système de protection selon l'une des revendications précédentes,
    caractérisé en ce qu'il comporte au moins une soupape de décharge (8) supplémentaire, disposée entre la source d'alimentation (1) et un circuit utilisateur supplémentaire (9) et ayant une pression d'ouverture supérieure aux pressions d'ouverture des soupapes de décharge (4, 23) mentionnées précédemment.
  6. Système de protection selon l'une des revendications précédentes,
    caractérisé en ce que, à chacune des liaisons directes (29 ou 26) et des soupapes de décharge correspondantes (4 ou 23) est assujetti un clapet anti-retour (14 ou 18) et que le système de protection comprend au moins une soupape de décharge supplémentaire (15), disposée entre les clapets anti-retour (14, 18) et un circuit utilisateur supplémentaire (17), dans la direction duquel les clapets anti-retour (14, 18) sont perméables.
  7. Système de protection selon l'une des revendications 1 à 3 et 6 ou 5 et 6,
    caractérisé en ce qu'il présente, pour la configuration des dispositifs d'arrêt (12, 19), les caractéristiques suivantes :
    a) à l'intérieur d'un carter (65) débouche chacune des liaisons directes (29 ou 26), coaxialement à l'autre liaison directe respective (26 ou 29), dans une chambre de circuit utilisateur (46 ou 41) reliée au moins à la sortie de la soupape de décharge (4 ou 23) qui la contrôle;
    b) en position coaxiale aux embouchures (47 ou 40) des liaisons directes (29 ou 26) sont disposés des sièges de soupape (62) solidaires du carter, délimitant respectivement une chambre de circuit utilisateur (46 ou 41) d'une chambre de circuit utilisateur supplémentaire (64) reliée à la soupape de décharge supplémentaire (15) ;
    c) les clapets anti-retour (14, 18), placés en aval d'une liaison directe respective (29 ou 26) et de la soupape de décharge (4 ou 23) correspondante, sont constitués respectivement par l'un des sièges de soupape (62) solidaires du carter et un corps de soupape (60) ;
    d) les corps de soupapes (60) présentent des espaces creux coaxiaux aux embouchures (47 ou 40) des liaisons directes (29 ou 26);
    e) dans les espaces creux des corps de soupapes (60) est guidé d'une façon étanche, un élément de fermeture (52) mobile dans le sens axial, traversant la chambre de circuit utilisateur supplémentaire (64) et fermant à ses positions terminales l'embouchure respective (47 ou 40) d'une liaison directe (29 ou 26).
  8. Système de protection selon les revendications 2 et 4 ou 2 et 7,
    caractérisé en ce que, pour la configuration du clapet anti-retour secondaire (30 ou 27), il est disposé entre l'embouchure (47 ou 40) de la liaison directe (29 ou 26) correspondante et l'élément de fermeture (44 ; 52) coaxialement à cette embouchure (47 ou 40) et à l'élément de fermeture (52) un corps de soupape secondaire (54), mobile dans le sens axial.
  9. Système de protection selon les revendications 3 et 4 ou une des revendications 7 et 8
    caractérisé en ce que l'élément de fermeture (44 ; 52) est précontraint par rapport au carter (42 ; 65) au moins dans une direction de déplacement.
  10. Système de protection selon la revendication 9,
    caractérisé en ce que, pour réaliser la précontrainte, il est prévu un ressort de contact (45) s'appuyant d'une part sur l'élément de fermeture (44 ; 52) et d'autre part sur le carter (42 ; 65) si l'on se place dans la direction de déplacement de l'élément de fermeture (44 ; 52).
EP95116660A 1994-12-17 1995-10-23 Système de protection dans une installation sous pression Expired - Lifetime EP0717201B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445146A DE4445146A1 (de) 1994-12-17 1994-12-17 Schutzsystem für eine Druckmittelanlage
DE4445146 1994-12-17

Publications (3)

Publication Number Publication Date
EP0717201A2 EP0717201A2 (fr) 1996-06-19
EP0717201A3 EP0717201A3 (fr) 1998-07-01
EP0717201B1 true EP0717201B1 (fr) 2002-09-11

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Application Number Title Priority Date Filing Date
EP95116660A Expired - Lifetime EP0717201B1 (fr) 1994-12-17 1995-10-23 Système de protection dans une installation sous pression

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EP (1) EP0717201B1 (fr)
BR (1) BR9505889A (fr)
DE (2) DE4445146A1 (fr)

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DE19733778B4 (de) * 1997-08-05 2004-05-06 Bosch Rexroth Ag Hydraulischer Pumpenabsicherungsblock
EP2674338B2 (fr) * 2011-02-10 2021-10-27 Nabtesco Automotive Corporation Soupape de protection
DE102017000694A1 (de) * 2017-01-17 2018-07-19 Wabco Gmbh Mehrkreisschutzventil einer Druckluftbremsanlage
CN113530782B (zh) * 2021-07-15 2022-07-08 中铁工程装备集团有限公司 一种具有快速压力切断保护功能的大排量泵及其保护方法
DE102022110263A1 (de) 2022-04-27 2023-11-02 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Bremssystem für ein Schienenfahrzeug und Verfahren zur Ansteuerung eines solchen Bremssystems

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DE2206975C3 (de) * 1972-02-14 1978-12-07 Knorr-Bremse Gmbh, 8000 Muenchen Schutzvorrichtung für Mehrkreisdruckluftleitungssysteme, insbesondere für Mehrkreisbremsanlage!! von Kraftfahrzeugen
DE2553818A1 (de) * 1975-11-29 1977-06-02 Wabco Westinghouse Gmbh Mehrkreis-schutzventil fuer mehrkreis- bremsanlagen in kraftfahrzeugen
DE2754219C3 (de) * 1977-12-06 1981-02-26 Graubremse Gmbh, 6900 Heidelberg Mehrkreisschutzventil für Bremsanlagen von Kraftfahrzeugen
DE3434884C2 (de) * 1984-09-22 2000-03-16 Wabco Gmbh Schutzsystem für eine Kraftfahrzeug-Druckluftanlage
DE4206172A1 (de) * 1992-02-28 1993-09-02 Bosch Gmbh Robert Mehrkreis-schutzventil

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DE4445146A1 (de) 1996-06-20
BR9505889A (pt) 1998-01-06
EP0717201A3 (fr) 1998-07-01
EP0717201A2 (fr) 1996-06-19
DE59510368D1 (de) 2002-10-17

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