WO2015185619A2 - Multiway valve, in particular a 6/2-way valve and multiway valve arrangement - Google Patents

Multiway valve, in particular a 6/2-way valve and multiway valve arrangement Download PDF

Info

Publication number
WO2015185619A2
WO2015185619A2 PCT/EP2015/062370 EP2015062370W WO2015185619A2 WO 2015185619 A2 WO2015185619 A2 WO 2015185619A2 EP 2015062370 W EP2015062370 W EP 2015062370W WO 2015185619 A2 WO2015185619 A2 WO 2015185619A2
Authority
WO
WIPO (PCT)
Prior art keywords
valve
multiway
control piston
valve chamber
valves
Prior art date
Application number
PCT/EP2015/062370
Other languages
German (de)
French (fr)
Other versions
WO2015185619A3 (en
Inventor
Matthias Leykauf
Original Assignee
Voith Patent 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
Priority to DE102014210415.7 priority Critical
Priority to DE102014210415 priority
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2015185619A2 publication Critical patent/WO2015185619A2/en
Publication of WO2015185619A3 publication Critical patent/WO2015185619A3/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401Valve members; Fluid interconnections therefor
    • F15B13/0402Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/20Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
    • F16K11/22Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D21/00Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/14Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to other specific conditions
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00Control
    • F05D2270/60Control system actuates means
    • F05D2270/64Hydraulic actuators

Abstract

The invention relates to a hydraulic multiway valve, consisting substantially of: a valve housing; at least one valve chamber which is integrated in the valve housing and extends along a longitudinal axis; an actuating mechanism; a control piston which can be moved by means of the actuating mechanism in order to assume at least two valve positions; and inlets and outlets which are connected to the valve chamber and can each be at least partially closed or opened depending on the position of the control piston. According to the invention, three inlets (Z1, Z3, Z5) and three outlets (A2, A4, A6) are provided on the valve housing (2), and the control piston (5) comprises piston faces for cooperating with the inner peripheral faces of the valve chamber (4) in order to couple and/or block the connections between the individual inlets and outlets (Z1, Z3, Z5, A2, A4, A6) via the valve chamber (4), the control piston (5), viewed in the direction of the longitudinal axis (L) of the valve chamber (4), consisting of at least of two interconnected part-pistons (5.1, 5.2), and each of the part-pistons (5,1, 5.2) comprising on its outer periphery a sealing face region (13.1, 13.2) which, in cooperation with a valve seat (14.1, 14.2) disposed in the valve housing (2), blocks at least one outlet (A2, A4, A6) of the valve chamber (4) in each valve position (I, II).

Description

 Multi-way valve, in particular a 6/2-way valve and

 Multi-way valve arrangement

The invention relates to a hydraulic multi-way valve, consisting essentially of a valve housing, at least one integrated in the valve housing valve chamber, an actuating mechanism, a movable by the actuating mechanism and arranged in the valve chamber control piston, and inflows and outflows, in particular inlet and Abiaufbohrungen , which are at least partially or completely shut off or released by the position of the control piston. The invention further relates to a multi-way valve arrangement and a hydraulic control device with a multi-way valve arrangement.

State of the art

Steam turbines, for example in power plants, in which live steam is expanded from a boiler and thereby drives one or more turbine stages, must not exceed certain maximum speeds, in particular to prevent damage to the turbine components. In order to avoid exceeding this maximum speed by the turbine in a load shedding, a clutch breakage or the like, it is known for example from DE 102004042891 B3 to provide a quick-closing valve that interrupts or reduces the steam mass flow to the turbine in the shortest possible time, if, for example the turbine speed exceeds a predetermined threshold or in any other way an imminent exceeding of the maximum speed is detected.

Accordingly, high availability, safety and reliability requirements are placed on such quick-closing valves and their activation. Conventionally, therefore, a quick-acting valve has a working cylinder or actuator which is vented by a hydraulic pressure against a biasing element, such as a spring, to actively open the quick-acting valve as long as the hydraulic pressure overcomes the bias of the biasing element. To close the quick-closing valve, this hydraulic pressure is reduced as quickly as possible, for example, shut down in a tank. The non-pressurized working cylinder is forced by the biasing member in the closed position of the quick-closing valve. To relieve a plurality of control devices is previously known, to ensure a high level of reliability redundant arrangements are selected.

For example, find row arrangements of two-way slide valves use, which can be brought with appropriate switching magnets in the necessary respectively for the opening and closing of the quick-closing valve position. A redundant arrangement causes actuation of the quick-acting valve when at least two two-way slide valves are actuated.

DE 102004042891 B3 discloses a control device for a quick-closing valve of a steam turbine with a module for reducing a hydraulic pressure by rapidly opening a discharge valve, wherein a control valve arrangement is provided with at least three safety directional valves, which are hydraulically connected so that the first quick-closing valve Close when at least two safety valves of the control valve assembly have moved to a quick-closing position. The control device is designed such that the hydraulic pressure can be reduced almost abruptly when a defined event occurs. One speaks in this case of a so-called 2oo3 circuit (two out of three). DE 102011082599 A1 shows a valve arrangement, as it can be used for example for turbines. This valve assembly has 2oo3 logic. For this purpose, a first, a second and a third pilot valve are provided, wherein each of these Vorschaltventile controls two safety valves. This results in three connecting branches, wherein the valve arrangement is characterized in that the safety valve is divided into inlet and outlet valves and These are coupled such that the inlet and outlet valves are connecting branches across. This means that in each case two of the inlet valves and two of the drain valves are connected in series with one another in order to jointly form the connecting branches. It is envisaged that three ball valves are each assigned two inlet valves and two drain valves. In this case, an arrangement is provided in which one of the two inlet valves and one of the two drain valves in the first connection branch and the other inlet valve and the other drain valve are arranged in the further connection branch, but the other drain valve is fed to the first connection branch.

A Vorschaltventil according to the prior art is thus associated with a plurality of inlet and outlet valves in different connection branches. If a pilot valve is defective, this therefore affects two connecting branches. A redundant switching technology, such as a "2oo3" circuit is then no longer functional.

If one of the feed valves is defective, for example the detection device on the multi-control valve, the sensor or the like, therefore, the current operation must be interrupted or at least waived the so-called TRIP function.

The TRIP function consists, for example, of immediately switching off a steam turbine in an emergency. Three safety valves are switched. The triggering takes place via a 2oo3 (two out of three) circuit. This means that the control liquid is shut off for rapid shutdown by actuation of at least two safety directional valves.

The document EP 0433 791 A1 discloses an embodiment with three safety valves in the form of safety-way valves and in each case the safety valves associated solenoid valves for actuating this known. In case of failure of one of the safety valves can be maintained by absteuern the associated actuating valve, the operation anyway. The actuation valves can not decouple the flow P of the safety valve. They serve only as an actuator of the safety valve and replacement of a safety valve during operation is also not possible.

Object of the invention

 The object of the invention is to develop a multi-way valve for indirect control of the quick-closing valve, that a simple cost-effective design can be realized. Furthermore, a multi-way valve for a control device with a quick-closing valve for the operation of a turbine is to provide, in the case of failure of a safety valve, the safety valve can be replaced during operation.

The solution according to the invention is characterized by the features of claims 1, 4 and 1 1. Advantageous embodiments are described in each case in the subclaims. A hydraulic multi-way valve consisting essentially of

 a valve housing,

 at least one valve chamber integrated in the valve housing and extending along a longitudinal axis,

 an actuating mechanism,

 one through the actuating mechanism along a longitudinal axis of the

Valve chamber movable and arranged in the valve chamber control piston for the realization of at least two valve positions,

associated with the valve chamber inflows and outflows, which are at least in each case partially shut off or released by the position of the control piston, according to the invention is characterized in that the valve housing in each case three Inlets and three processes are provided and the control piston has piston surfaces for cooperation with the valve chamber, in particular the inner peripheral surfaces for coupling and / or blocking the connections between the individual inlets and outlets via the valve chamber, wherein the control piston viewed in the direction of the longitudinal axis of the valve chamber at least consists of two interconnected sub-pistons and each of the sub-piston has on its outer circumference a sealing surface region which shuts off in cooperation with a valve housing arranged in the valve seat in each case a valve position at least one outlet of the valve chamber.

The solution according to the invention makes it possible to provide a multi-way valve, in particular a 6 / x-way valve, preferably a 6/2-way valve for use in control devices for actuating quick-acting valves, in particular for use in power plants. About the two-part design of the control piston, the formation of the sealing surface areas of these is ensured for the interaction with a valve seat of the valve chamber with a simple design. With such a multi-way valve, in particular 6/2-way valve as a feed valve for a safety valve, in particular safety directional valve can in a hydraulic control device for a quick-closing valve of a steam turbine with redundant valve arrangement, a hydraulic decoupling or shutting off the respective safety valve during operation, i. be realized without affecting the operation for the purpose of maintenance or replacement. For this purpose, the pilot valve, which is assigned to the defective safety valve, spent in a valve position in which the downstream safety valve can be removed, but still the pending pressure is passed, so that the current operation is not interrupted.

A preferred application is the use in a hydraulic control device with a module for reducing a hydraulic pressure by rapidly opening a discharge valve and / or unloading or loading an actuator for actuating the quick-closing valve, wherein in a Betriebsmittelversorgungs- and / or guide system, a control valve arrangement is provided with at least three safety valves, which are connected hydraulically such that they open the outflow valve or the actuator load or load, if a safety circuit by at least two safety valves of the control valve arrangement have moved into a quick-closing position. In this case, each safety valve is independent of the other safety valves Vorschaltventil connected upstream hydraulically, such that a respective Vorschaltventil downstream safety valve during operation is hydraulically decoupled from this. Under hydraulic precedence is understood as an upstream arrangement viewed in the flow direction from a pressure source to a pressure sink. "Hydraulically coupled" or "decoupled" includes in particular hydraulically directly or indirectly connected via further connecting channels, lines, rooms or intermediate components or ensuring or blocking a fluid connection.

The individual sub-pistons of the control piston are preferably detachably connected to each other for assembly and disassembly purposes, wherein the connection can be non-positively or positively formed.

The control device for the control piston can be performed manually operable in the preferred application in which the multi-way valve according to the invention only 2- switching positions, especially if the number of actuation is low, such as in control devices with safety valves in the case of replacement of such a safety valve. In this case, in one development, the multi-way valve according to the invention is designed such that in the longitudinal direction of the control piston this is supported with an end portion in the valve housing via at least one energy storage device, in particular spring unit and the actuator is arranged acting on the other end. For applications with a plurality of such multi-way valves, the invention provides to combine them in a hydraulic multi-way valve assembly with at least two, preferably three multi-way valves, the multi-way valves each having a valve housing, a valve housing integrated in the valve chamber, arranged in the individual valve chamber, along a longitudinal axis of the valve chamber movable Control piston for realizing at least two valve positions and an actuating mechanism per valve chamber include. Furthermore, associated with a single valve chamber inlets and outlets are provided, which are at least partially shut off or released by the position of the control piston. The individual multi-way valves are combined to form a structural unit, wherein at least one fluid connection between the valve chambers of the individual multi-way valves is provided and each individual actuating mechanism comprises an adjusting element, which in each case transfers the control piston of a multi-way valve from a first position I to a further position II or vice versa ,

The basic idea is to arrange a plurality of valves, which provide for a corresponding redundancy, in a valve housing. The summary of a multi-way valve assembly in the form of a structural unit has the advantage of providing them as a compact and easy to handle unit and easy to integrate into systems. Required brackets are easy to fix. Furthermore, the hydraulic connection can be made compact in a small space.

The present basic idea further pursues a hydraulic triple redundancy which protects against unwanted and consequently expensive shutdowns of the turbine. The new device is a supplement to the electronic speed monitoring. It is characterized by a threefold redundancy of the module. The designation is marked "2oo3" - two out of three (two out of three). It avoids turbine damage caused by turbines in overspeed, should the load to be driven suddenly disappear. As it is with such Damage can also be dangerous for people and the environment, steam turbines are subject to high safety requirements. This includes in particular a reliable shutdown of the turbine in an emergency. At an overspeed of, for example, ten percent triggers an electronic overspeed protection. The device is equipped with three identical solenoids with slide valves - preferably arranged in series 6/2-way valves - and immediately controls the pressure oil of a hydraulic cylinder with return spring. The spring return closes the quick-closing valve in less than 0.3 seconds and stops the process. If this process is triggered by mistake, for example due to a faulty cable break, unnecessary and, above all, expensive downtimes occur. Just such a device protects. The safety device can be tested during operation without causing interruption and allows the replacement of electrical components during operation.

The invention sees the three 6/2 - way valves in parallel as upstream shut-off of safety valves. In this case, the three way valves are advantageously arranged in a common valve housing. Such a hydraulic multi-way valve consists essentially of the said valve housing, a plurality of valve housings integrated in the valve chambers, each an actuating mechanism, a movable by the actuating mechanism and arranged in the valve chamber control piston, and inlet and Abiaufbohrungen, by the position of the control piston, a first or assume a further position and at least partially within the valve housing via the valve chamber fluidly coupled to each other.

Within the valve housing thus a plurality of valve chambers are arranged, wherein at least one fluid connection between the valve chambers is provided. For this purpose, an adjusting element is provided as the actuating mechanism, the each transferred the control piston from a first position I to another position II. The operating mechanism provided for this purpose consists of a spring which cooperates with the control piston of the multi-way valve and an adjusting element interacting with the control piston and arranged opposite the spring. By transferring position I to position II is moved by a relative movement, the adjustment against the force of the spring acting. The actuating element can preferably be operated by hand, for example with a commercially available tool. Preferably, the arrangement of the valve chambers is such that their longitudinal axes are arranged to run parallel to each other and the individual complementary terminals, ie respective inlets and outlets preferably each lie on a common theoretical connection line. The interaction of valve chamber and control piston with respect to the first position I of a multiway valve causes the first inlet bore Z1 are fluidly connected to the Abiaufbohrung A2, the second inlet bore Z3 with the Abiaufbohrung A4, and the inlet bore Z5 and the Abiaufbohrung A6 are locked. On the other hand causes the transfer to position II, that the first inlet bore Z1 and the further inlet bore Z5 is fluidly connected to the Abiaufbohrung A6, the other inlet and Abiaufbohrungen Z3 and A2 and A4 are locked.

The multi-way valve, consisting of a defined number of preferably 6/2-way valves thus has a common valve housing, which can be coupled in a flange to a valve block such that the respective inlet bores and Abiaufbohrungen the valve housing control lines can be for the control block. This eliminates the need for additional control lines. The manual operation also makes it easy to operate the multi-way valve. Due to a single valve housing a compact design is given, which can be easily attached to other control blocks or control modules flange.

Further advantageous embodiments will become apparent from the following description, the claims and the drawings.

Show it:

 Fig. 1 is a schematic representation of the function of the multi-way valve;

Fig. 2 shows a section through the multi-way valve of FIG. 1 in a first

 Switching position;

 Fig. 3 is a section through the multi-way valve of FIG. 1 in a second

 Switching position;

 4 shows a longitudinal section through the multi-way valve, according to FIGS. 1 to 3; Fig. 5 is a perspective view of the multi-way valve according to FIGS.

 1 to 4;

 Fig. 6 is a perspective view of the multi-way valve together with a control module.

Description of an embodiment

 FIGS. 4 and 5 show a multiway valve arrangement 1 according to the invention. This consists of three multi-way valves 3 (individually in Figs. 4-6 as 6/2-way valve with the reference numerals 3.1, 3.2, 3.3), which are connected in parallel to each other, the upstream shut-off of safety valves 10 of a hydraulic control device 12, as shown for example in Figure 6 serve for a quick-closing valve, not shown here.

Such a multi-way valve 3 is shown schematically in Fig. 1 as a 6/2-way valve. The illustrated in Fig. 1 6/2-way valve 3 has three inlets, in particular Zulaufbohrungen Z1, Z3 and Z5 and three processes, in particular Abiaufbohrungen A2, A4 and A6 and is designed such that it can optionally take one of the two possible positions I (Fig. 2) and II (Fig. 3).

The control piston 5 has according to the invention piston surfaces for cooperation with the inner peripheral surfaces of the valve chamber 4 for coupling and / or blocking the connections between the individual inlets and outlets Z1, Z3, Z5, A2, A4 and A6 via the valve chamber 4, wherein the control piston. 5 viewed in the direction of the longitudinal axis of the valve chamber 4 at least two interconnected sub-piston 5.1, 5.2 and each of the sub-piston 5.1, 5.2 at its outer periphery a sealing surface area 13.1, 13.2, which in cooperation with a valve housing 2 arranged in the valve seat 14.1, 14.2 in each case a valve position I or II shuts off at least one outlet A2, A4 or A6 of the valve chamber 4.

In this case, the three multi-way valves 3 in a multi-way valve assembly 1 by arrangement in a common valve housing 2, as shown in Figure 4, summarized according to a basic idea of the invention. Such a hydraulic multi-way valve arrangement 1 consists essentially of said valve housing 2, three valve chambers 4 integrated in the valve housing 2, three actuating mechanisms 6, one each by the actuating mechanism 6 movable and arranged in the valve chamber 4 at least two part pistons 5.1 and 5.2 formed control piston fifth , as well as said inlet bores Z1, Z3, Z5 and the Abiaufbohrungen A2, A4, A6, which occupy a position corresponding to the position of the control piston 5. The valve chambers 4 are fluidly connected by at least one connection 7. The actuating mechanism 6 consists of an adjusting element 6.2 and a spring element 6.1.

The control piston 5 extends into the one side of the valve chamber 4, on which the control piston 5 is connected to the adjusting element 6.2 in connection to the other side of the valve chamber 4, on which the control piston 5 is coupled to the spring element 6.1 and thus along the longitudinal axis L of the valve chamber 4. The Control piston 5 is round in its cross section and has different sections with different cross sections. These cross sections are used to lock or open the supply lines Z1, Z3, Z5 and the Abiaufbohrungen A2, A4, A6 accordingly. The respective positions I and II are shown in FIGS. 2 and 3, wherein the direction of flow of the open supply and discharge lines is indicated by arrows.

As part of the actuating mechanism 6, the adjusting element 6.2 is provided, which in each case transfers the control piston 5 from a first position I to a further position II against the spring force of the spring element 6.1. The adjusting element 6.2 can preferably be operated by hand, for example with a commercially available tool.

The interaction of valve chamber 4 and control piston 5 with respect to the first position I of a 6/2-way valve causes the first inlet bore Z1 with the

Abiaufbohrung A2, the second inlet bore Z3 are fluidly connected to the Abiaufbohrung A4, and the inlet bore Z5 and the Abiaufbohrung A6 are locked.

On the other hand causes the transfer to position II, that the first inlet bore Z1 and the further inlet bore Z5 is fluidly connected to the Abiaufbohrung A6, the other inlet and Abiaufbohrungen Z3 and A2 and A4 are locked.

 The individual multi-way valves 3.1 to 3.3 are here individually and independently operable.

The valve housing 2 is closed by a closure element 15, which is designed here as a cover element and all three valve chambers 4 of the multi-way valve assembly 1 is closed.

Preferably, the guide for the respective adjusting element 6.2 of the actuating mechanisms 6 is integrated in this closure element 15. The multi-way valve 1, consisting of a defined number of preferably 6/2-way valves has a common valve housing 2, the flange to a valve block 8 (FIG. 6) can be coupled such that the respective inlet bores and Abiaufbohrungen the valve housing 2 control lines for may be the valve block 8.

The application of the multi-way valve 1 is shown in Fig. 6. In this case, the valve housing 2 designed as a flange of the multi-way valve 1 is preferably designed as a rectangular body element. This shows a flange 9 (Fig. 5), which at least partially comes to rest during assembly with the valve block 8. The drain lines A2, A4, A6 correspond to corresponding supply lines in the valve block 8, on which the safety valves 10 of a control device 12 are arranged, for example, a quick-closing valve of a steam turbine arrangement, not shown here.

LIST OF REFERENCE NUMBERS

1 multiway valve arrangement

2 valve housing

 3 way valve

 3.1 6/2 way valve

 3.2 6/2 way valve

 3.3 6/2 way valve

4 valve chamber

 5 control piston

5.1, 5.2 partial piston

 6 operating mechanism

6.1 spring element

6.2 Adjustment element

 7 connection

 8 valve block

 9 flange surface

 10 safety valve

12 control device

 13.1, 13.2 sealing surface areas

 14.1, 14.2 Valve seat

 15 closure element

 Z1 inlet, in particular inlet bore Z3 inlet, in particular inlet bore

Z5 inlet, in particular inlet bore

A2 drain, especially drainage

A4 drain, especially drainage

A6 drain, in particular drain hole L longitudinal axis

Claims

claims
1 . Hydraulic multi-way valve (3.1, 3.2, 3.3), consisting essentially of
a valve housing,
 at least one valve chamber integrated in the valve housing and extending along a longitudinal axis,
 an actuating mechanism,
 a control piston which can be moved by the actuating mechanism along a longitudinal axis of the valve chamber and is arranged in the valve chamber for realizing at least two valve positions,
 - Connected to the valve chamber inflows and outflows, which are at least in each case partially shut off or released by the position of the control piston, characterized in that
 three inlets (Z1, Z3, Z5) and three outlets (A2, A4, A6) are provided on the valve housing (2) and the control piston (5) has piston surfaces for interacting with the inner peripheral surfaces of the valve chamber (4) for coupling and / or blocking the connections between the individual inlets and outlets (Z1, Z3, Z5, A2, A4, A6) via the valve chamber (4), wherein the control piston (5) viewed in the direction of the longitudinal axis (L) of the valve chamber (4) at least consists of two interconnected partial pistons (5.1, 5.2) and each of the partial pistons (5.1, 5.2) has on its outer circumference a sealing surface region (13.1, 13.2), in cooperation with a in the valve housing (2) arranged valve seat (14.1, 14.2) in in each case one valve position (I, II) shuts off at least one outlet (A2, A4, A6) of the valve chamber (4).
2. multiway valve (3.1, 3.2, 3.3) according to claim 1,
 characterized in that
the individual sub-pistons (5.1, 5.2) are non-positively or positively connected with each other.
3. multiway valve (3.1, 3.2, 3.3) according to claim 1 or 2,
 characterized in that
 viewed in the longitudinal direction of the control piston (5), the latter is supported by an end region in the valve housing (2) via at least one energy storage device, in particular spring unit (6.1), and the actuating mechanism (6) comprises an adjusting element (6.2) acting on the other end region.
4. Hydraulic multiway valve arrangement (1)
 with at least two multiway valves (3.1, 3.2, 3.3), each comprising
 - A valve housing (2);
 - A in the valve housing (2) integrated valve chamber (4);
 - One in the individual valve chamber (4) arranged along a longitudinal axis (L) of this valve chamber (4) movable control piston (5) for the realization of at least two valve positions (I, II);
 - An actuating mechanism (6) for the control piston (5) per valve chamber (4);
- Connected to a single valve chamber (4) inflows and outflows (Z1, Z3, Z5, A2, A4, A6), which are at least in each case partially shut off or released by the position of the control piston (5);
 characterized in that
 the individual multiway valves (3.1, 3.2, 3.3) are combined to form a structural unit, at least one fluidic connection (7) being provided between the valve chambers (4) of the individual multiway valves (3.1, 3.2, 3.3) and each individual actuating mechanism (6) an adjusting element (6.2), which in each case transfers the control piston (5) of a multiway valve (3.1, 3.2, 3.3) from a first position I to a further position II or vice versa.
5. Hydraulic multiway valve arrangement (1) according to claim 4,
characterized in that the single multiway valve (3.1, 3.2, 3.3) is designed according to one of claims 1 to 3.
6. Hydraulic multiway valve arrangement (1) according to one of claims 4 to 5, characterized in that
 the actuating mechanism (6) consists of an energy storage unit cooperating with the control piston (5), in particular a spring (6.1) and an adjusting element (6.2) cooperating with the control piston (5) and arranged opposite the spring (6.1), the adjusting element being displaced by a relative movement (6.2) acts against the force of the spring (6.1).
7. Hydraulic multiway valve arrangement (1) according to one of claims 4 to 6, characterized in that
 the valve chambers (4) of the at least two multiway valves (3.1, 3.2, 3.3), preferably three multiway valves (3.1, 3.2, 3.3) are arranged in a common valve housing (2).
8. Hydraulic multiway valve arrangement (1) according to claim 7,
 characterized in that
 the valve housing (2) has a flange surface (9) which can be fluidly coupled to a flange surface of a valve block (8).
9. Hydraulic multiway valve arrangement (1) according to one of claims 4 to 8, characterized in that
the single multiway valve (3.1, 3.2, 3.3) is designed as a 6/2-way valve and three inlet bores (Z1, Z3, Z5) and three Abiaufbohrungen (A2, A4, A6), wherein the interaction of the valve chamber (4) and control piston (5) and actuating mechanism (6) of a single multiway valve, in particular a 6/2-way valve (3.1 to 3.3), a first position I causes so that the first inlet bore Z1 fluidly connected to the Abiaufbohrung A2, the second inlet bore Z3 with the Abiaufbohrung A4 and the inlet bore Z5 and the Abiaufbohrung A6 are locked.
10. Hydraulic multiway valve arrangement (1) according to one of claims 4 to 9, characterized in that
 the single multiway valve (3.1, 3.2, 3.3) is designed as a 6/2-way valve and three inlet bores (Z1, Z3, Z5) and three Abiaufbohrungen (A2, A4, A6), wherein the interaction of the valve chamber (4) and control piston (5) and actuating mechanism (6) causes a second position II of the 6/2-way valve (3.1 to 3.3), so that the first inlet bore Z1 and the further inlet bore Z5 fluidly connected to the Abiaufbohrung A6, wherein the further inlet and Abiaufbohrungen Z3 and A2 and A4 are locked.
1 1. Hydraulic control device (12) for a quick-closing valve of a steam turbine with a module for reducing a hydraulic pressure by quickly opening a discharge valve and / or unloading or loading an actuator for actuating the quick-acting valve, wherein in a Betriebsmittelsversorgungs- and / or guide system Control valve assembly with three safety valves (10) is provided, which are connected in such a hydraulic manner that they open the outflow valve or load or load the actuator when a safety circuit passed through at least two safety valves of the control valve assembly in a quick-closing position,
 characterized in that
each safety valve (10) from the other safety valves (10) independent Vorschaltventil (3.1, 3.2, 3.3) is hydraulically connected upstream, such that a respective a Vorschaltventil (3.1, 3.2, 3.3) downstream safety valve (10) during operation hydraulically this is decoupled, wherein the single ball valve is formed by a 6/2-way valve and the pilot valves (3.1, 3.2, 3.3) are arranged in a multi-way valve arrangement according to one of claims 4 to 10.
PCT/EP2015/062370 2014-06-03 2015-06-03 Multiway valve, in particular a 6/2-way valve and multiway valve arrangement WO2015185619A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102014210415.7 2014-06-03
DE102014210415 2014-06-03

Publications (2)

Publication Number Publication Date
WO2015185619A2 true WO2015185619A2 (en) 2015-12-10
WO2015185619A3 WO2015185619A3 (en) 2016-03-03

Family

ID=53442733

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/062370 WO2015185619A2 (en) 2014-06-03 2015-06-03 Multiway valve, in particular a 6/2-way valve and multiway valve arrangement

Country Status (2)

Country Link
DE (1) DE102015210274A1 (en)
WO (1) WO2015185619A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9897113B2 (en) * 2016-05-02 2018-02-20 Hallco Industries, Inc. Switching valve control system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433791A1 (en) 1989-12-21 1991-06-26 Asea Brown Boveri Ag Actuator for a feeding valve
DE102004042891B3 (en) 2004-08-31 2005-10-06 Hydac System Gmbh Safety circuit for media-powered consumers and method of operation thereof
DE102011082599A1 (en) 2011-09-13 2013-03-14 KEICHER Hydraulik UG Valve arrangement i.e. trip blocks, for switching of connections between hydraulic oil-filled pipes in atomic power plant, has inlet and drain values, where each of adjacent inlet and drain valves are serially connected with one another

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9501794L (en) * 1995-05-15 1996-08-19 Nordwin Ab Hydraulic control valve
WO2009088504A1 (en) * 2008-01-07 2009-07-16 Vanderbilt University Solenoid valve assembly
JP5316263B2 (en) * 2009-06-30 2013-10-16 株式会社ジェイテクト Solenoid valve
DE102009050007A1 (en) * 2009-10-21 2011-05-05 Alpha Fluid Hydrauliksysteme Müller GmbH Hydraulic valve for use as multi-way-switchover valve in hydraulic connection with base valve, has three-way region designed in seat valve technique
JP5543236B2 (en) * 2010-02-10 2014-07-09 東芝機械株式会社 Hydraulic control valve for construction machinery
CN101893011A (en) * 2010-07-30 2010-11-24 三一重工股份有限公司 Hydraulic valve, hydraulic valve bank and control method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433791A1 (en) 1989-12-21 1991-06-26 Asea Brown Boveri Ag Actuator for a feeding valve
DE102004042891B3 (en) 2004-08-31 2005-10-06 Hydac System Gmbh Safety circuit for media-powered consumers and method of operation thereof
DE102011082599A1 (en) 2011-09-13 2013-03-14 KEICHER Hydraulik UG Valve arrangement i.e. trip blocks, for switching of connections between hydraulic oil-filled pipes in atomic power plant, has inlet and drain values, where each of adjacent inlet and drain valves are serially connected with one another

Also Published As

Publication number Publication date
WO2015185619A3 (en) 2016-03-03
DE102015210274A1 (en) 2015-12-03

Similar Documents

Publication Publication Date Title
DE602004009493T2 (en) Hydraulic control device for a construction machine
EP1593893B1 (en) Emergency valve
CA1122880A (en) Hydraulic control valve unit
US20130074955A1 (en) Fluid valve arrangement
US9482365B2 (en) Rotary valve
CN102549273B (en) Electrofluidic control device
CA2540346C (en) Electronically controllable and testable turbine trip system
JP2015523528A (en) Hydraulic system with dynamic seal
JP5320120B2 (en) Multifunctional relief valve and emergency hydraulic power unit for aircraft equipped with the same
US20130118595A1 (en) Pressure Regulating Device and Method of Operating a Pressure Regulating Device
US7478884B2 (en) Hydraulic switching mechanism for longwall supports
DE102009059816B3 (en) An electrically operable parking brake system and method for controlling an electrically actuatable parking brake system
KR101901121B1 (en) Hydraulic or pneumatic drive for actuating a fitting comprising a control valve or selector valve
DK166551B1 (en) Valve equipment for a hydraulic pressure cumulator
CN103597219B (en) hydraulic actuator
US5769113A (en) Dual pilot manifold assembly for a safety relief valve
JP2016106204A (en) Apparatus to increase force of actuator having override apparatus
US8418958B2 (en) Landing gear actuation control system
US3139109A (en) Valve control system
EP2598782B1 (en) High pressure mechanical safety valve
EP2592318B1 (en) Pipeline protection systems
JP4768855B2 (en) Safety valve drive system
US20060042250A1 (en) Safety circuit for media-operated consumers and process for its operation
JP2016538493A6 (en) Manifold and related method for providing hydraulic fluid to an underwater jet prevention device
ES2285366T3 (en) Double valve built through unit individual valves.

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15730419

Country of ref document: EP

Kind code of ref document: A2

122 Ep: pct application non-entry in european phase

Ref document number: 15730419

Country of ref document: EP

Kind code of ref document: A2