DE102015016357A1 - Control valve of a process plant, method for operating the control valve - Google Patents

Abstract

In a control valve, in particular lifting valve, for adjusting a process fluid flow of a process plant, in particular petrochemical plant, such as a brewery, a nuclear power plant or the like, comprising a control valve housing which defines the position of a stationary valve seat, a valve member with the valve seat for opening and Closing of the control valve cooperates, and a bearing for particular translational guiding of the valve member relative to the valve seat in the direction of adjustment, it is provided that this storage additionally allows a rotational movement of the valve member relative to the valve seat.

Description

The invention is in the field of process engineering plants, with which thermally and / or chemically aggressive fluids are processed. In cooling processes, fluids are processed at temperatures well below 100 ° C, where in the chemical or petrochemical process technology for the environment and health hazardous substances are to be treated. There are in the handling of such fluids specific to be observed production regulations, such as the standardized ignition safety. In process engineering plants for processing food fluids, such as in breweries, dairies or the like, there are certain production requirements for the control valve, in particular with respect to its sealing function, Notschließfunktion and compliance with hygiene regulations, etc.

The invention relates to a control valve, such as a lifting valve, for adjusting a process fluid flow of the process plant. The control valve has a housing-fixed valve seat and a valve member usually designed as a valve cone. The valve member is mounted for adjustment in a translatory actuator valve travel direction on a valve stem or valve stem which may be operated by a pneumatic, electric or hydraulic drive. In the process engineering plant, hydraulic and pneumatic drives are preferred insofar as they have a lower risk of ignition than electric drives. Furthermore, it is necessary that the drive side, for example, the pneumatic or hydraulic, is sealed hermetically against the process fluid side in each adjustment position of the control valve, even if a large number of actuating movements are to be taken during the operating time of the process plant.

Modern control valves may be subjected to a control circuit which is electrically operated. For this purpose, the control valve according to the invention with a nearby arranged, in particular directly flanged, in particular electropneumatic positioner be operatively coupled, which can deliver, for example via auxiliary energy, such as pneumatics or hydraulics, a corresponding, auxiliary energy control signal to an actuator coupled to the control valve. It is desirable that the electrical components of the lift valve assembly, in particular the position control system, are not only fed by a central power supply, but merely receive a power supply operationally. A decentralized energy supply has the disadvantage that it is not easy due to ignition protection requirements to keep a self-sufficient power supply to the valve areas in stock.

It is known to provide local power generation cells in the process technology for energy self-sufficient energy generation, and it can be used, for example, as a source of energy, a pneumatic or hydraulic source. It is also known to generate electrical energy from the process fluid flow as such.

Out DE 196 01 917 A1 is an arrangement for powering electrical equipment by means of pneumatic auxiliary power known. This arrangement should be integrated for decentralized power supply in a control engineering device. To realize a sufficient continuous operating reliability with reduction of noise generation and with the greatest possible freedom from maintenance, a piston / cylinder arrangement which is self-reversing via a spring is provided with a piston movably arranged in a fixed cylinder. The piston / cylinder assembly is connected to a source of pneumatic energy, the spring being positioned between a piston rod disposed on the piston / cylinder assembly and a stationary piezoelectric element. With the translational, initiated by the pneumatic reciprocation electrical energy is generated at the terminals of the auxiliary element and tapped to provide the electrical equipment with energy.

DE 20 2012 010 675 U1 discloses an energy converter that converts auxiliary pneumatic energy for a positioner into electrical energy by introducing a pressure pulse in a working chamber in which a reciprocating working piston is disposed. By means of a magnetic restoring force, a reciprocating motion is imposed on the piston, which carries a permanent magnet, which in turn cooperates with a coil for generating electric current.

Further disclosed DE 10 2012 002 316 A1 a thermoelectric element in the housing interior of a control valve, which generates based on the pressure difference and temperature difference electrical energy for transmission to electrical consumers.

Such decentralized power generation devices require a precise assembly and a larger number of components. Furthermore, a translational reciprocation, for example, is associated with a non-negligible susceptibility to function, in particular when different pneumatic flows act differently on the piston.

A control valve with an energy recovery device is off WO 2014/132187 A2 known. In this case, a closure element in the form of a radial shutter slide is the Energy conversion device downstream in the flow direction. This arrangement of an energy conversion device in the region of the control valve requires due to the high number of parts of a high assembly cost and also greatly influences the process fluid flow, so that an application of the known arrangement is not suitable for a variety of process engineering situations.

US 2009/0165866 A1 discloses a ball valve in which within the ball valve member, a turbine is arranged, which is rotatably mounted relative to the ball valve member. This arrangement is also susceptible to damage and contributes to a significant influence of the process flow through the turbine within the passage of the control valve, so that an extensive use in the field of process technology is not possible.

It is an object of the invention to provide a decentralized power supply for electrical devices in the vicinity of a control valve, wherein the flow characteristics of the control valve can remain as uninfluenced, especially the flow is independent of the regulated position of the control valve is adjustable, without the maintenance of the control valve and / or to increase the probability of default.

This object is solved by the features of claim 1 and / or claim 2. Preferred embodiments are specified in the subclaims.

Thereafter, a control valve, in particular a lifting valve, preferably for linear locations, in particular raising and lowering, a valve member is provided to adjust a process fluid flow of the process plant, as defined above. The process plant comprises a chemical or petrochemical plant, a plant for processing food fluids, such as a brewery, or a power plant, such as a nuclear power plant. The control valve according to the invention comprises a valve housing which defines the position of a stationary valve seat. In particular, can be provided for fixing the valve seat in the interior of the channel passage of the control valve, an inner fin, which define a particular circular passage opening, which may constitute the base of the valve seat. It is known to form the valve seat by an inserted, separate seal seat in particular from a different material to the valve housing. Furthermore, the control valve according to the invention has a valve member which cooperates with the valve seat for opening and closing the control valve, wherein in particular the valve member on the valve seat and can be moved away, in particular in the vertical direction on or can be lifted. The valve member may have a rotationally symmetrical shape, such as a conical shape or a truncated cone shape, wherein in particular a rotational symmetry axis of the valve member may coincide with a linear actuating movement axis of the valve member. The particular rotationally symmetrical valve member cooperates with the likewise rotationally symmetrical shaped valve seat to form a closed, circumferential, in particular circular or cylindrical sealing surface engagement in the closed state. The valve member forms the adjustable valve body of the control valve, which cooperates for the opening and closing of the control valve with the stationary valve seat. Furthermore, a bearing, in particular an axial sliding bearing, for the particular translational, linear guiding of the valve member relative to the valve seat is provided. This bearing for the valve member with respect to the valve seat and consequently with respect to the valve housing can also be designed to prevent a process fluid from escaping from the valve housing or the entry of a medium foreign from the process fluid into the valve housing. According to the invention, this particular linear bearing additionally has the ability to rotate the valve member relative to the valve seat, in particular around the Stellbewegungsachse of the control valve, so that in addition to the leadership of the valve member in an axial direction of adjustment, a rotational movement of the valve member is allowed to the Stellrichtungsachse.

Alternatively or additionally, the invention relates to a control valve, in particular a stroke valve, which comprises a control valve housing which defines a stationary valve seat to be flowed through by the process fluid, in particular as already indicated above. Furthermore, the control valve according to the invention has a valve member, which is in particular translationally movable relative to the valve seat for opening and closing of the control valve, in particular adjustable according to regulations, is. In addition, the valve member has a sealing surface which flows around the outside of the process fluid at least in the open state of the control valve and cooperates with the valve seat in order to substantially hermetically close off the valve passage in the closed state of the valve member. According to the invention, the valve member has a turbine blade profile at its outside, in particular in the flow direction, which is flowed around by the process fluid, in particular in the direction of flow, in relation to the sealing surface. In addition, the valve member is movably mounted relative to the valve housing such that the process fluid flowing past the active surface entrains the particular freely rotatable valve member and causes it to rotate. The "open or unclosed" valve member can rotate within the control valve housing and is exposed to the fluid flow which causes the rotatably mounted valve member in a rotational movement. That from outside (independently of the Fluid flow) rotatably driven valve member can also influence the fluid flow - regardless of the respective position of the valve member along the direction of the actuator axis. With the free rotatability of the valve member with respect to the control valve housing, the flow behavior can be influenced in particular downstream of the valve seat. For example, by introducing external rotational forces in the valve member, which are communicated from the outside of the valve member, a pumping effect on the control valve passage can be achieved, which can cause additional control valve individual influencing, in particular strengthening or weakening, the process fluid flow.

The valve member may in particular indirectly via an output shaft with a braking device such as an electric generator, be coupled to stop, for example, the valve member shortly before the closing of the control valve, so the Ineingriffkommen the valve member with the valve seat, with respect to the rotational movement about the Stellrichtungsachse, so that a sliding friction between the valve member and the valve seat and thus increased wear between the two components is avoided. In particular, the turbine blade profile can achieve throttling of the fluid flow, in particular independently of the respective valve position, until the closure is sealed off. The rotational movement of the valve member caused by the process fluid flow, and in particular an output shaft adjacent to the valve member, can be used to convert flow energy of the process fluid flow into another such as electrical, power, even pneumatic power output shaft side, particularly outside the control valve housing. Corresponding energy converters, which convert kinematic rotational energy of the valve member into electrical energy or pneumatic energy, are known per se. The respective energy converter can be assigned an energy store, such as an accumulator, which stores the converted energy and can deliver it again depending on the operating situation.

In a preferred embodiment of the invention, the control valve comprises an actuating rod, which is in particular coupled to an actuator, such as a pneumatic actuator, to transmit a force for performing the translational or linear actuating movement on the valve member. The actuating force is generated in particular outside the valve housing in the above-mentioned actuator and communicated to the control rod. The actuating rod protrudes into the valve housing and is rigidly coupled to the valve member in such a way that the process fluid flow forces acting on the valve member, in particular on the turbine blade profile, are introduced into the control rod for transmission to the outside of the valve housing or vice versa, that generated outside the valve housing Actuating forces and rotational drive forces can be transmitted to operate the valve member in the control rod. Alternatively, the valve member may be rotatably supported in the actuating rod responsible for the movement along the direction of adjustment, so that a rotational movement of the valve member relative to a control rod rigidly mounted in the direction of rotation about the actuating direction axis can be realized. In this case, a rotatable mounting of the valve member relative to a stationary in the direction of rotation control rod an additional output shaft is provided, on which the valve member is fixed and which is rotatably mounted in particular on or in the control rod. For this purpose, the control rod may be formed as a hollow tube in which the output shaft is rotatably mounted. It is clear that the output shaft can be designed as a hollow shaft, in which the adjusting rod can be performed in the axial direction of adjustment.

In a further development of the invention, the valve member of the control valve is rotatably mounted on a valve rod which transmits the actuating movement in the direction of adjustment. The rotary bearing of the valve member with respect to the stationary in the direction of rotation control rod is designed to take the valve member in both translational adjustment directions. Alternatively, the valve member may be rigidly fastened to a valve rod, wherein a valve rod displacement allows both a translational Ventilstellbewegung and a rotational movement, on the one hand to be able to occupy each position relative to the valve seat in the direction of adjustment and on the other hand to allow the rotational movement about the Stellrichtungsachse.

In a preferred embodiment of the invention, the valve member comprises a conical shape, in particular a truncated cone shape. In this case, the valve member having a conical, in particular frusto-conical, at least in the open state of the control valve on the process fluid flow around the outer effective surface, on the sections, a turbine blade profile and a turbine blade profile free circumferential sealing region is formed. The turbine blade profile serves to either influence the process fluid flow as a pump part by means of externally imposed rotary motion or to be passively driven by the process fluid flow, whereby the resulting kinetic rotational energy can be transmitted to the outside via the output shaft. The control valve sealing area is preferably cone-shaped or cylindrically shaped. The sealing region is designed to form a fully circumferential sealing engagement with the valve seat of the control valve, in particular in the closed state of the valve member, wherein in particular the turbine blade profile section of the outer effective surface in process fluid flow direction upstream of the process fluid Turbine blade profile-free sealing region of the valve member is arranged.

In a further development of the invention, a particularly hollow executed control rod, in particular a hollow tube is provided as an actuating rod, which is coupled mitnehmend to the valve member in the axial, translational actuating direction, so that a linear movement of the control rod leads to a linear movement of the valve member. Preferably, an output shaft, in particular concentrically associated with the control rod, is provided which is non-rotatably connected to the valve member so that the output shaft can transmit a rotational movement of the valve member and vice versa. To realize the rotational movement of the output shaft relative to the control rod, a rotary bearing between the control rod and the output shaft is provided for example by means of one or more rolling bearings.

Preferably, the control rod is attached to a chamber divider of a pneumatic actuator with at least one pneumatic working chamber and a return chamber. A chamber divider may be a diaphragm-plate assembly movably disposed in the actuator housing. The actuator housing and the valve housing are preferably flanged together to require a small volume of construction. In addition, the actuator housing and the control valve housing for carrying out the control rod and possibly the output shaft substantially aligned housing passages.

In a further development of the invention, the valve housing has a valve housing, in particular coaxial with the valve seat and / or the valve seat diametrically opposite valve housing passage for passing the valve rod and optionally the output shaft to the outside of the valve housing. Preferably, the control rod in the valve housing passage and / or the actuator housing passage is designed as a bearing sleeve, which arranged for forming an axial sliding bearing in the valve housing passage and / or the drive housing passage. Preferably, the bearing sleeve takes on the inside at least one pivot bearing, such as a rolling bearing, for a rotational movement guidance of the output shaft against the bearing sleeve.

In a preferred embodiment of the invention, the valve member is fixed to a relative to the valve housing translationally mounted output shaft, which is supported in particular on a hollow running control rod. Preferably, the output shaft is divided into two parts, wherein a valve member-side output shaft part in particular carries the valve member on the end side and the further, outer output shaft part carries a permanent magnet arrangement. Both output parts are rotationally mounted so that they can rotate independently. Both output shaft parts are supported on the inside of the hollow control rod. In this case, a drive shaft part coupling can be provided for mutual rotational driving of the output shaft parts. Preferably, the coupling should be designed to be contactless, in particular realized by a magnetic coupling, wherein in particular the output shaft parts rotary bearing receiving control rod comprises two separated by an inner wall Sacklochabteile in which the respective output shaft part is rotatably mounted, but not displaceable in the direction of adjustment relative to the blind hole department is.

In a further development of the invention, an electric motor is provided, which is coupled to the valve member such that the valve member can be driven to realize a pump function. Alternatively, the valve member may be connected to an electric generator such that rotational movement of the valve member induced in the fluid flow by the fluid flow may be converted into electrical energy in the electric generator.

In a preferred embodiment of the invention, a coil arrangement of the electric motor or electric generator is attached to a rotatably and axially displaceably mounted control rod, in particular outside of the control valve housing and preferably within a return chamber of a pneumatic actuator. The coil arrangement is moved back and forth in accordance with the adjusting movement. Preferably, a permanent magnet arrangement is rotatably attached to the output shaft fixed to the valve member relative to the coils, which is a common translational adjusting movement of the coil of the electric motor or the electric generator and the permanent magnet assembly and a relative rotational movement between the coil and the magnet assembly is allowed. In this way, regardless of the setting position, a pump function or a generator function is always provided.

In a further development of the invention, an electric motor or an electric generator which cooperates with a non-rotatably coupled to the valve member magnet assembly outside of the valve housing, in particular in an actuator housing, such as a pneumatic actuator housing in particular in the pneumatic working chamber or return chamber arranged. Preferably, the electric motor or electric generator with respect to a valve member rotatably coupled to the output shaft and in particular with respect to a translational, axially mounted control rod fixed to the housing. The magnet arrangement may have such an axial longitudinal extent in the direction of adjustment, in particular on an output shaft, that over the entire travel of the control valve, a coil of the electric motor or electric generator is in electromagnetic engagement with the magnet assembly, so that a pump function or a generator function is allowed and guaranteed independent of the control valve position. Preferably, the longitudinal extent of the magnet arrangement is at least equal to the maximum control amplitude of the control valve.

Furthermore, the invention relates to a method for generating electrical energy and / or the control valve individually influencing the process fluid flow in the region of a control valve passage of a control valve, in particular for achieving a relation to the process fluid flow additional pumping in the range of the control valve passage, such as the valve seat. The method is designed so that it can proceed according to the above-mentioned operation of the control valve. The rotatably mounted valve member of the control valve is in particular set around its Stellbewegungsachse by the process fluid flow and / or by externally introduced rotational forces in a rotational movement, which is transmitted from the outside to the valve member and / or from the valve member to the outside of the valve housing. On the outside of the control valve, the rotational movement can be converted by means of an electric motor into electrical energy and optionally supplied to an electrical energy store. upon application of a rotational movement from the outside, the rotational movement is transmitted to the rotatably mounted valve member in order to achieve in the region of the valve seat influencing the process fluid flow. For this purpose, the valve member may be provided with a turbine structure on the outside around which it flows.

It is clear that the method according to the invention can be concretized according to the functional and method steps mentioned above and / or later.

Further characteristics, advantages and features of the invention are explained by the following description of preferred embodiments of the invention with reference to the accompanying drawings, in which:

1 a cross-sectional view of the control valve according to the invention in a Hubventilausgestaltung in an open valve position;

2 a cross-sectional view according to 1 wherein the control valve is in a closed valve position;

3 a cross-sectional view of another embodiment of the control valve according to the invention; and

4 a cross-sectional view of a still further embodiment of the control valve according to the invention.

In 1 to 4 Several embodiments of the control valve according to the invention are shown in an overall arrangement, wherein the following components are common to all embodiments: a control valve 1 , a pneumatic actuator 3 and an electric motor / generator arrangement 5 , wherein in particular hereinafter on the generator function of the arrangement 5 Reference is made.

The control valve 1 includes a control valve housing 7 , each at a flow inlet 11 and flow outlet 13 determines, and a mounting flange 15 for mounting system lines, which are not shown in detail in the figures.

Between the flow inlet 11 and the flow outlet 13 is a flow passage 17 defined, which is aligned in the vertical direction, which coincides with a vertical adjustment direction S. The flow passage 17 is in an inner rib 21 of the valve housing 7 trained and takes an inserted sleeve-shaped seal seat 23 on, made of a different material, especially stainless steel or plastic, such as the valve body 7 is formed, which is preferably realized from cast metal. The sealing sleeve 23 forms the housing-fixed valve seat 25 of the control valve 1 which in turn has a circular sealing surface 27 sets. The valve seat 23 cooperates to open and close the flow passage 17 the process fluid flow with a valve member 31 which has a truncated cone shape.

The valve member 31 has an upstream truncated cone shaped turbine section 33 that with several one-piece turbine blades 35 is formed so that the process fluid flow (not shown) rotational forces the valve member 31 communicates and the valve member 31 rotated as the process fluid from the flow inlet 11 towards the flow outlet 13 the flow passage 17 happens. Downstream of the turbine section 35 includes the valve member 31 a circumferential sealing surface 37 , which seals with the circumferential seat sealing surface 27 of the valve seat 25 process fluid sealing cooperates when the valve member 31 positively in the optionally elastically deformable seal seat 23 is included ( 2 and 3 ).

The valve member 31 is on an output shaft 41 attached by the process fluid flow through the turbine section 33 induced rotary drive forces towards the electric generator 5 transfers. The electric generator 5 includes this one coil assembly 43 acting as a magnet coil with a magnet arrangement 45 interacts electromagnetically to a rotational movement of the magnet assembly 45 opposite the non-rotatable coil assembly 43 To induce electricity. The magnet arrangement 45 is non-rotatable on the output shaft 41 attached.

Thus the output shaft 41 can perform a free rotation, this is compared to a control rod 51 rotatably mounted. The control rod 51 is designed as a hollow body or hollow tube and takes the output shaft 41 in its cavity, which extends along the direction of adjustment S, on. For the rotary bearing of the output shaft 41 opposite the control rod 51 may be provided rolling bearing, which may be formed as ball bearings or other rolling bearings, which in the drawings generally with the reference numeral 53 are provided. In the area of rolling bearings, dynamic process fluid seals may be provided to prevent entry of the process fluid into the interior region of the actuating rod cavity. Avoidance of a seal within the adjustable hollow rod 51 can be realized by a dead-end cavity formation for the control rod 51 is provided as they are in the execution 3 is apparent.

The control rod 51 leads through a housing passage 55 of the valve housing 7 in a drive housing 57 of the actuator 3 , The actuator 3 has a pneumatic working chamber 61 which have a connection 63 can be acted upon with a particular regulated pneumatic control pressure to the control rod 51 in the direction S in particular between the closed position ( 2 and 3 ) and an open position ( 1 and 4 ). In a hermetically airtight to the pneumatic working chamber 61 completed return chamber 65 is a compression spring arrangement 67 installed, which is the control rod 51 in the closed position ( 2 and 3 ) forces. To the return chamber 65 from the working chamber 61 to separate pneumatically is a diaphragm-plate arrangement 71 provided, which is a roller diaphragm 63 and a stiffener 75 includes, on which the control rod 51 is attached.

Will the pneumatic working chamber 61 pressurized with a pneumatic pressure, the pneumatic pressure acts against the spring force of the spring assembly 67 and shifts the control rod 51 and entraining the valve member 31 from the closed position to an open position upwards.

So the control rod 51 can be displaced in the direction S, is an axial sliding bearing 77 in the housing passage 55 provided which receives a process fluid-tight dynamic seal for axial positioning movement.

As in 1 to 4 it can be seen, is the housing passage 55 coaxial (with respect to the actuator axis S) to the flow passage 17 arranged to safely open and close the control valve 1 to realize.

When flowing through the control valve 1 and in the open state of the control valve 1 act due to the turbine blade 35 Rotational forces on the valve member 31 , which is a rotation of the valve member 31 including the output shaft 41 causes which Drehabtriebsbewegung on the magnet assembly 45 is transmitted. Inside the coils 43 of the electric generator 5 are induced currents, which via an electrical line 81 an electrical load or an electrical storage (not shown in detail) can be supplied. The electrical line 81 can through the pneumatic connection 63 the pneumatic working chamber 61 be carried out as in 4 is indicated.

Now with specific reference to the embodiment according to 1 and 2 is a power generation system in the control armature consisting of the pneumatic drive 3 and the control valve 1 integrated and based on the rotating valve member 31 , which is used to open and close the valve seat 25 serves. The rotary bearing is in this example by means of a running in a hollow rod actuator rod 51 rotatably mounted output shaft 41 realized, which is rotatably supported about the Stellrichtungsachse S. These are two rolling bearings 53 , especially in combination with seals on the inside of the control rod 51 attached, allowing a free twistability of the output shaft 41 opposite the control rod 51 is allowed. As in 1 and 2 it can be seen, the control rod extends 51 through the valve body passage 55 into the interior of the actuator 3 , in particular in the pneumatic working chamber 61 , and includes a mounting portion 81 to which the coils of the electric generator 43 are attached. In a rotational movement between the at the output shaft 41 attached magnet arrangement 45 and the electric generator 43 Electric current is induced in the coil and to an electrical load (not shown) or an electrical energy storage (not shown) dissipated. At the in 1 and 2 illustrated embodiment, the electric generator moves 5 together with the control rod 51 and the valve member 31 in direction S.

The control rod 51 comprises a valve-side, substantially tubular portion with a constant cylindrical outer and inner side along the direction of adjustment. The cylindrical outer face serves as a sliding bearing with respect to the valve housing passage 55 using several sealing elements 75 to realize. The cylindrical outer side is as far as in Axial direction (S) extended that along the complete travel of the control valve 1 a sealing / guiding contact between the valve housing passage 55 and the control rod 51 is provided. In the middle area of the control rod 51 is a cross-sectional thickening 85 provided, which serves to the diaphragm plate 75 attach it to a pressure-tight coupling between the diaphragm-plate assembly 71 and the control rod 51 sure.

As in 1 and 2 can be seen includes the frustoconical outer side of the valve member 31 turbine blade-shaped elevations or depressions that serve to bypass fluid flow from the inlet 11 to the outlet 13 of the control valve 1 the freely rotating valve member 31 to drive, so that electric current in the electric generator 5 can be produced.

In the execution after 3 is the output shaft 41 divided into two parts, namely a valve member side shaft portion 87 and an electric generator side shaft portion 89 , In this way is at the transition / separation area, ie at the two opposite free ends of the shaft sections 87 . 89 a dead-end closure of the cavity of the control rod 51 realized by a Stellstangeninnenwandung 91 is executed. The inner wall 91 divides the cavity of the control rod 51 in two blind hole-like cavities in which the respective output shaft section 87 . 89 is rotatably arranged.

So that the drive movements of the valve member 31 in the open state of an output shaft section 87 in the separate, opposite output shaft section 89 Both are opposite, through the inner wall 91 separate output shaft ends of the output shaft sections 87 . 89 Permanent magnet, by which a magnetic coupling 93 between the output shaft sections 87 is realized. Should be very strong abrupt drive movements on the valve member 31 act, reaches the magnetic coupling 93 a non-abrupt driving of the shaft sections 87 . 89 but a gradual driving, causing electrical voltage spikes within the electric generator 5 be avoided. In addition, it requires the addition of the inner wall 91 no sealing with regard to the rotational movement between the output shaft 41 and the control rod 51 ,

At the in 4 shown embodiment is in addition to the one-piece design of the output shaft 41 in addition to mention that the electric motor or electric generator 5 fixed drive housing is mounted so that, in contrast to the above embodiments, a movement of the electric motor or electric generator 5 in the direction S does not go along. In this way, the removal of the electrical energy or the supply of electrical energy via the line 81 much easier. The electric motor or electric generator 5 is in the pneumatic working chamber 61 of the actuator 3 arranged and adjacent to the passage 55 through which the control rod 51 and the output shaft 41 therethrough. For the appropriate sealing of the area between the output shaft 41 and the control rod 51 is a seal 95 in the field of rolling bearings 53 intended.

As already explained above, for this embodiment of a stationary electric motor / electric generator is a magnet assembly 45 ' provided, which has such an axial extent that during the displacement of the control rod 51 always ensures that the magnet assembly 45 ' in electromagnetic influence with the coils 43 the electric motor or electric generator 5 stands.

The features disclosed in the foregoing description, the figures and the claims may be of importance both individually and in any combination for the realization of the invention in the various embodiments.

LIST OF REFERENCE NUMBERS

1

Control valve

3

actuator

5

Electric motor / electric generator

7

Control valve housing

11

flow inlet

13

flow outlet

15

mounting flange

17

Flow passage

21

internal rib

23

Seal seat, sealing sleeve

25

valve seat

27

sealing surface

31

valve member

33

turbine section

35

turbine blade

41

output shaft

43

coil assembly

45, 45 '

magnet assembly

51

control rod

53

Bearings / Bearing

55

Housing passage

57

drive housing

61

pneumatic working chamber

63

Connection, roller diaphragm

65

Return chamber

67

Compression spring arrangement

71

Membrane-plate assembly

75

diaphragm plate

77

bearings

81

electric cable, mounting section

87, 89

shaft section

91

inner wall

93

magnetic coupling

95

poetry

S

setting direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19601917 A1 [0005]
• DE 202012010675 U1 [0006]
• DE 102012002316 A1 [0007]
• WO 2014/132187 A2 [0009]
• US 2009/0165866 A1 [0010]

Claims (12)

Control valve ( 1 ), in particular lifting valve, for adjusting a process fluid flow of a process plant, in particular petrochemical plant, such as a brewery, a nuclear power plant or the like, comprising a control valve housing ( 7 ), which determines the position of a fixed valve seat ( 25 ) defines a valve member ( 31 ) connected to the valve seat ( 25 ) for opening and closing the control valve ( 1 ), and a bearing for the particular translational guiding of the valve member relative to the valve seat ( 25 ) in the direction of adjustment (S), characterized in that this storage additionally rotational movement of the valve member ( 31 ) relative to the valve seat ( 25 ) allows. Control valve ( 1 ), in particular a lifting valve, for adjusting a process fluid flow of a process plant, in particular according to the preamble of claim 1 or claim 1, comprising a control valve housing ( 7 ), which is a stationary valve seat to be flowed through by the process fluid ( 25 ) defines a valve member ( 31 ), which relative to the valve seat ( 25 ) for opening and closing the control valve ( 1 ) is in particular translationally adjustable and at least in the open state of the control valve ( 1 ) flowed around by the process fluid, with the valve seat ( 25 ) cooperating sealing surface ( 27 ), characterized in that the valve member ( 31 ) has in sections a turbine blade profile and in such a way relative to the control valve housing ( 7 ) is mounted, that at the sealing surface ( 27 ) passing process fluid, the valve member ( 31 ) is set in a rotational movement. Control valve ( 1 ) according to claim 1 or 2, characterized in that it additionally comprises an actuating rod ( 51 ) for transmitting a force, in particular outside of the control valve housing ( 7 ) is produced and / or the control rod ( 51 ), into the control valve housing ( 7 ) and the valve member ( 31 ) so rigidly on the control rod ( 51 ) is attached to the valve member ( 31 ), in particular on the turbine blade profile, acting process fluid driving forces in the control rod ( 51 ) for transmission to the outside of the control valve housing ( 7 ), or the valve member ( 31 ) on the control rod ( 51 ) is rotatably mounted, wherein in the case of a rotatable mounting of the valve member ( 31 ) on the control rod ( 51 ) an additional output shaft ( 41 ) is provided, on which the valve member ( 31 ) is mounted and the rotatable in particular on or in the control rod ( 51 ) is stored. Control valve ( 1 ) according to claim 3, characterized in that the valve member ( 31 ) on a valve rod ( 51 ) is rotatably mounted, wherein the pivot bearing with respect to the valve rod ( 51 ) is adapted to the valve member ( 31 ) in both translational valve actuating directions (S), or the valve member ( 31 ) on a valve rod ( 51 ), wherein a valve rod bearing allows both a translational valve actuating movement (S) and a rotational movement. Control valve ( 1 ) according to one of the preceding claims, characterized in that the valve member ( 31 ) has a conical shape with a conical, at least in the open state of the control valve ( 1 ) of the process fluid flow around the outer effective surface, on which a turbine blade profile and a turbine blade profile free circumferential sealing area ( 27 ) is formed, which is preferably cone-shaped or cylindrically shaped and with the valve seat ( 25 ) of the control valve ( 1 ) a fully circumferential sealing engagement in the closed state of the valve member ( 31 In particular, the turbine blade profile section of the outer effective surface in the process fluid flow direction upstream of the turbine blade profile-free sealing region (FIG. 27 ) is arranged. Control valve ( 1 ) according to one of the preceding claims, characterized in that a particularly hollow executed control rod ( 51 ) is provided, which is connected to the valve member ( 31 ) is coupled mitnehmend in the axial, translatory actuating direction (S), wherein in particular also in particular a concentric to the control rod ( 51 ) arranged output shaft ( 41 ) provided with the valve member ( 31 ) is rotatably connected, wherein a pivot bearing between the control rod ( 51 ) and the output shaft ( 41 ) is provided. Control valve ( 1 ) according to claim 6, characterized in that the control rod ( 51 ) on a chamber divider of a pneumatic actuator ( 3 ) with at least one pneumatic working chamber ( 61 ) and a return chamber ( 65 ), wherein an actuator housing ( 57 ) and the control valve housing ( 7 ) are flanged together and for carrying out the control rod ( 51 ) have substantially aligned housing passages. Control valve ( 1 ) according to one of the preceding claims, characterized in that the control valve housing ( 7 ) one in particular with the valve seat ( 25 ) coaxial and / or the valve seat ( 25 ) diametrically opposed valve housing passage for performing an actuating rod ( 51 ) to the outside of the valve housing, wherein the control rod ( 51 ) is arranged in the valve housing passage as a bearing sleeve for an axial sliding bearing relative to the valve housing passage, wherein in particular the bearing sleeve on the inside at least pivot bearing, such as a rolling bearing, receives for a rotational movement of an output shaft relative to the bearing sleeve. Control valve ( 1 ) according to one of the preceding claims, characterized in that the valve member ( 31 ) at one opposite the valve housing ( 7 ) rotatably mounted output shaft ( 41 ), which is divided into two parts, wherein a valve member-side output shaft part, in particular the end of the valve member ( 31 ) and the further, outer-side output shaft part carries a permanent magnet arrangement ( 45 ), wherein in particular both driven parts are rotationally mounted such that they can rotate independently of each other, wherein in particular a clutch for mutual rotation driving the output shaft parts is provided, in particular the clutch is made contactless, in particular by a magnetic coupling ( 93 ) is realized, wherein in particular the output shaft parts rotatably bearing receiving control rod ( 51 ) two through an inner wall ( 91 ) comprises separate blind hole compartments, in which the respective output shaft part is rotatably mounted. Control valve ( 1 ) according to one of the preceding claims, characterized in that an electric motor or an electric generator ( 5 ) in such a way with the valve member ( 31 ) that a rotational drive force between the valve member ( 31 ) and the electric generator or electric motor ( 5 ) can be transmitted. Control valve ( 1 ) according to claim 9, characterized in that a coil arrangement ( 43 ) of the electric motor or electric generator ( 5 ) on a rotatably and axially displaceably mounted control rod ( 51 ) especially outside of the control valve housing ( 7 ) and preferably within a return chamber ( 65 ) of a pneumatic actuator ( 3 ), wherein in particular at one with the valve member ( 31 ) fixedly connected output shaft ( 41 ) a permanent magnet arrangement ( 45 ) relative to the coil arrangement ( 43 ) is rotatably mounted, so that a common translational adjusting movement of the coil arrangement ( 43 ) of the electric motor or electric generator ( 5 ) and the permanent magnet arrangement ( 45 ) and a relative translational movement between the coil assembly ( 43 ) and the permanent magnet arrangement ( 45 ) allowed are. Control valve ( 1 ) according to one of the preceding claims, characterized in that an electric motor or an electric generator ( 5 ) connected to one of the valve member ( 31 ) non-rotatably coupled permanent magnet arrangement ( 45 ) cooperates outside of the valve housing ( 7 ), in particular in an actuator housing ( 57 ), such as a pneumatic actuator housing, especially in its pneumatic working chamber ( 61 ) or return chamber ( 65 ), wherein in particular the electric motor or electric generator ( 5 ) with respect to one with the valve member ( 31 ) rotatably coupled output shaft ( 41 ) and in particular with respect to a translational, axially mounted control rod ( 51 ) is arranged fixed to the housing, wherein the permanent magnet arrangement ( 45 ) in particular on the output shaft ( 41 ) has such an axial longitudinal extent in the adjustment direction (S) that over an entire travel of the control valve ( 1 ) a coil of the electric motor or electric generator ( 5 ) in electromagnetic influence with the magnet arrangement ( 45 ' ), in particular the longitudinal extent of the magnet arrangement ( 45 ' ) at least one maximum control amplitude of the control valve ( 1 ) corresponds.

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