Additional device and regulating valve

Abstract

The utility model relates to an additional device and a regulating valve, the additional device is provided with at least one main body comprising a cover part, the cover part is used for closing an opening of a valve shell of the regulating valve, the main body is provided with a central axis extending and penetrating through the cover part, and the main body forms a connecting wall; the connecting wall is formed as part of the cover part and is used for integrally connecting to a valve housing, in particular a wall of the valve housing, the connecting wall extends substantially completely around the central axis when viewed along the central axis, the main body delimits a recess through the connecting wall on the cover part up to the central axis, and the additional device further comprises at least one accommodating projection, and a receiving projection provided for receiving a regulating rod of the regulating valve and extending at the cover part to one end side of the main body, the receiving projection being arranged at least partially in front of the connecting wall when viewed from the end side along the central axis and defining a recess on one outer side surface. The accommodating projection forms at least one circulation guiding mechanism which is used for communicating fluid of the fluid cavity of the valve housing to the recess in a state of being connected with the valve housing.

Description

Technical Field

[0001] The utility model relates to an additional device for a regulating valve and the regulating valve. Background Art

[0002] Attachments for control valves are already known, which can usually be mounted on the housing part of the control valve by means of a flange system or a similar electrical connection system. Such connections may have sealing problems under special process conditions, such as high or low temperatures, use of special media, etc. Attachments are also known which are welded to the housing of the control valve, but are connected to the housing via a connection plane, wherein the connection directly separates the exterior space from the internal through-channel. Utility Model Content

[0003] The utility model originates from an additional device for a regulating valve of a process equipment such as a chemical equipment, a power plant, a food processing equipment and the like, and comprises at least one main body including a cover part, wherein the cover part is arranged to close an opening of a valve housing of the regulating valve, wherein the main body has a central axis extending through the cover part, wherein the main body forms a connecting wall, the connecting wall is constituted as a part of the cover part and is arranged to be connected to the valve housing, in particular the valve housing wall, in a material-jointed manner, wherein the connecting wall extends substantially completely around the central axis as viewed along the central axis, wherein the main body defines a recessed portion through the connecting wall on the cover part up to the central axis, and further comprises at least one accommodating protrusion, which is arranged to accommodate an adjusting rod of the regulating valve and extends to one end side of the main body on the cover part, wherein the accommodating protrusion is at least partially arranged in front of the connecting wall as viewed along the central axis from the end side and defines the recessed portion on the outer side.

[0004] It is proposed that the receiving projection forms at least one circulation guide which is provided for fluidly connecting a fluid chamber of the valve housing to the recess in a state connected to the valve housing.

[0005] By designing the attachment according to the utility model, it is possible to advantageously prevent the formation of a separate useless space in the regulating valve when connected to the regulating valve. The recessed portion advantageously designed to be welded on the inner side of the connecting wall can be fluidically connected to the fluid chamber of the valve housing via the at least one circulation guide mechanism. This allows flushing of the recessed portion after the attachment is connected to the valve housing. By means of the recessed portion and the circulation guide mechanism connecting the recessed portion, it is possible to achieve the back side of the weld bead bottom surface when the attachment is welded to the valve housing. This advantageously prevents oxidation of the weld seam that occurs at this time, which maintains the corrosion resistance of the weld seam.

[0006] The additional device is preferably arranged for fixing, in particular, being mounted on a valve housing of the regulating valve. Preferably, the additional device forms a cover for the valve housing, in particular by means of a body cover, which is in particular arranged for closing a valve housing opening. The additional device, in particular the body, preferably forms a through-channel for a valve member of the regulating valve. Preferably, the additional device is arranged between the in particular pneumatic drive of the regulating valve and the valve housing in a state mounted on the valve housing. The additional device is preferably arranged for closing the through-channel in a fluid-tight manner, in particular pressure-tight, in the mounted state. The receiving projection preferably delimits the through-channel at least in the region of the cover.

[0007] The connecting wall is preferably designed essentially as a hollow cylinder. Preferably, the connecting wall preferably extends completely around the accommodating projection, especially when viewed along the center axis. Preferably, the recess is formed by the connecting wall in the radial direction toward the center axis, especially surrounded by the connecting wall, when viewed along the center axis. In particular, the accommodating projection defines the recess until the center axis, wherein in particular the connecting wall defines the recess in a direction radially facing away from the center axis. In particular, the recess is formed between the accommodating projection and the connecting wall. The recess preferably extends at least to one end of the connecting wall facing the end side of the main body, especially when viewed perpendicularly to the center axis. Preferably, the connecting wall includes a predetermined connection portion for connecting to the valve housing, wherein the connection portion is at least partially arranged at one end of the connecting wall facing the end side of the main body.

[0008] The receiving projection preferably has a basic shape that is substantially tubular or hollow cylindrical. The receiving projection preferably extends at least from the end side of the main body along the central axis through the entire height of the recess, wherein in particular the height of the recess extends parallel to the central axis. In particular, the maximum height of the recess extends from one end of the connecting wall facing the end side of the main body to one end of the receiving projection facing away from the end side of the main body when the additional device is separated from the valve housing. The end side of the main body is the outer side of the main body, which includes the main body end formed along the central axis. Preferably, the additional device is arranged to be installed on the valve housing with the end side in advance when connected to the valve housing, wherein in particular the end side of the main body or the receiving projection is arranged to at least partially move into the valve housing.

[0009] At least one circulation guide preferably extends from the recessed portion to the end side of the body, in particular partially or completely along the receiving projection and / or through the receiving projection. Preferably, the body and in particular the receiving projection form at least one bearing surface, which is arranged to abut against the valve housing in the form of a surface when connected to the valve housing. Particularly preferably, the at least one circulation guide is designed to be spaced apart from the at least one bearing surface. In particular, the body and in particular the receiving projection are arranged to at least substantially prevent the medium from flowing through the valve housing opening by abutting against at least one bearing surface. Preferably, the receiving projection forms a plurality of circulation guides. In particular, it is conceivable that the body and in particular the receiving projection form more than one bearing surface.

[0010] It is also proposed that at least one circulation guide mechanism is formed as a recessed portion in the outer wall of the receiving projection, which extends substantially parallel to the central axis. It is possible to achieve advantageously simple, particularly fast and low-cost manufacturing of additional devices, particularly receiving projections, especially because the circulation guide mechanism can be added completely from the outside, preferably different from adding through-channels, etc. In addition, it is possible to ensure a preferably large wall thickness between the circulation guide mechanism or the recessed portion and the receiving opening formed in the receiving projection. An advantageous and durable receiving projection design can be achieved. In particular, the at least one circulation guide mechanism is designed as a recess in the receiving projection relative to the bearing surface formed on the receiving projection. Preferably, the at least one circulation guide mechanism extends substantially parallel to the central axis. Preferably, the at least one circulation guide mechanism extends substantially straight. Alternatively, it is conceivable that the at least one circulation guide mechanism is designed to pass through a through-channel of the receiving projection and / or is formed in an arc shape. It is particularly conceivable that the circulation guide mechanism designed to pass through a through-channel of the receiving projection includes at least one outflow port adjacent to the recessed portion. In particular, it is conceivable that the circulation guide mechanism designed to pass through the through channel of the accommodating protrusion includes at least one inlet, which is arranged on the inner side surface of the accommodating protrusion facing the central axis, the outer side surface of the accommodating protrusion spaced apart from the recess, in particular facing away from the central axis, and / or the end face of the accommodating protrusion facing the end side.

[0011] It is also proposed to design the main body in such a way that at least one circulation guide mechanism has a substantially circular cross section, especially along the central axis. Advantageous flow properties for flushing the concave portion via the circulation guide mechanism can be obtained. Advantageously simple, particularly fast and low-cost manufacturing of the receiving projection can be achieved, especially because the circulation guide mechanism can be milled / drilled. Preferably, the main body is designed in such a way that at least one circulation guide mechanism has a circular or elliptical cross section, especially along the central axis. Preferably, the main body is designed in such a way that at least one circulation guide mechanism has a substantially constant cross section, especially parallel to the central axis, along the longitudinal extension of the circulation guide mechanism. Or it is conceivable that the at least one circulation guide mechanism has a variable cross section, wherein in particular the cross section is reduced toward the concave portion along the longitudinal extension of the circulation guide mechanism, or has a cross section that is not substantially circular. Preferably, the receiving projection forms a rounding or chamfer on the outer side facing the end side. It is conceivable that the receiving projection forms a rounding or chamfer extending along the cross-sectional profile of the circulation guide mechanism in the end area facing the end side of at least one circulation guide mechanism.

[0012] It is further proposed that the receiving projection has a basic shape that is essentially hollow cylindrical, wherein a cavity for the fusion regulating rod is provided around the central axis formed by the inner surface of the receiving projection, wherein the outer surface of the receiving projection facing away from the central axis at least partially defines the recess. A preferably compact design of the additional device can be achieved, wherein in particular the at least one circulation guide mechanism is only partially defined by the additional device itself when the additional device is mounted on the regulating valve. Preferably, the outer surface of the receiving projection that defines the recess facing away from the central axis at least partially defines the circulation guide mechanism. In particular, it is conceivable that at least one circulation guide mechanism and the recess partially transition.

[0013] It is also proposed to design the main body in such a way that the at least one circulation guide mechanism basically extends to the end of the receiving projection facing the main body end side. A flow performance that is favorable for the flushing of the concave portion via the circulation guide mechanism can be obtained. A favorable simple, especially fast and low-cost manufacturing of the receiving projection can be achieved, especially because the circulation guide mechanism can be continuously added to the main body from the outer side of the additional device. Preferably, the at least one circulation guide mechanism extends to the end of the receiving projection facing away from the main body end side. In particular, the main body is designed in such a way that the at least one circulation guide mechanism basically completely extends through the maximum height of at least one supporting surface, wherein in particular the maximum height of the supporting surface is basically oriented parallel to the central axis. The at least one circulation guide mechanism preferably extends along the central axis to the main body end side until an edge of the receiving projection. The at least one circulation guide mechanism "basically extends to the end side of the receiving projection facing the main body end side" should especially mean that the circulation guide mechanism extends to the bottom side of the receiving projection facing the end side, which defines the outer peripheral surface of the receiving projection. It is conceivable that the body, in particular the receiving projection, extends further along the central axis in the region around the central axis at this end side, in particular beyond the bottom side, but in particular has a maximum outer diameter in this region viewed along the central axis, like an outermost circumference.

[0014] It is also proposed to design the body in such a way that the at least one circulation guide extends parallel to the central axis at least through a large part of the maximum height of the recess. Advantageous flow properties for flushing the recess by the circulation guide can be obtained. Advantageously simple, especially fast and low-cost manufacturing of the receiving protrusion can be achieved, especially because the circulation guide can be formed continuously into the recess. Preferably, at least one circulation guide extends parallel to the central axis through at least 70%, preferably at least 80% and especially preferably at least 90% of the maximum height of the recess. Preferably, at least one circulation guide extends completely through the maximum height of the recess parallel to the central axis, especially until one end of the receiving protrusion opposite to the end side. In particular, the connecting wall is connected to the receiving protrusion or transitions to it at the end of the receiving protrusion opposite to the end side. In particular, the body is designed as an integral body. In particular, the receiving protrusion has at least one interface, which at least partially defines the recess and is designed to be spaced apart from at least one circulation guide, wherein the minimum radial distance of the interface from the central axis is greater than the minimum radial distance of the outer surface of the receiving protrusion defining the circulation guide from the central axis.

[0015] It is further proposed that the receiving projection forms a plurality of circulation guide mechanisms, which are particularly designed to be substantially identical in structure, wherein the circulation guide mechanisms are distributed around the central axis as viewed along the central axis. Advantageous flow properties for flushing the concave portion via the circulation guide mechanism can be obtained. In particular, uniform annular flow flushing in the concave portion can be obtained when the regulating valve with an additional device is operated. Preferably, undesirable eddies and / or interfering fluid flows can be advantageously prevented when used in the regulating valve. Preferably, the receiving projection forms at least four, preferably at least six, and particularly preferably at least eight circulation guide mechanisms. The circulation guide mechanisms are preferably substantially uniformly distributed around the central axis as viewed along the central axis, and are particularly arranged with substantially constant mutual angle offsets around the central axis. In particular, in the design in which the circulation guide mechanisms are incorporated into the outer surface of the receiving projection, the same maximum width of the circulation guide mechanisms is equal to at most 40%, preferably at most 50%, and particularly preferably at most 60% of the maximum outer circumference of the receiving projection as viewed in the circumferential direction around the central axis.

[0016] In addition, a regulating valve for a process device is proposed, which has a valve housing with a throttling point, a regulating rod, wherein an opening formed by the valve housing allows the regulating rod to move through, and an additional device of the utility model, wherein the additional device is connected to the valve housing in a material-joined manner via a connecting wall of the additional device, wherein at least one circulation guide mechanism of the additional device connects the fluid chamber fluid of the valve housing to a recess formed at the connecting wall.

[0017] By designing the regulating valve according to the utility model, it is advantageously possible to prevent the formation of a separate useless space in the regulating valve. The recessed portion on the inner side of the connecting wall, which is advantageously designed for welding, can be fluidically connected to the fluid chamber of the valve housing through at least one circulation guide mechanism. This allows the recessed portion to be swept when the fluid flows through the regulating valve. The recessed portion and the circulation guide mechanism connecting the recessed portion can achieve shaping of the back side of the weld bottom during welding of the attachment to the valve housing. This can advantageously prevent oxidation of the weld that occurs here, which maintains the corrosion resistance of the weld.

[0018] The valve housing is preferably a one-piece object, which is preferably made of one or more media-resistant and / or temperature-resistant materials. For example, the valve housing can be a one-piece metal casting or forging body, which has a processed surface, such as polished and / or coated, such as painted, powder-coated, chrome-plated, enameled, electroplated, etc. The valve housing forms at least one fluid chamber, which is formed as a valve housing inner chamber. The fluid chamber extends in particular through the throttling point. The fluid chamber of the valve housing is preferably opened to the outside only through a process fluid inlet such as an inlet, a process fluid outlet such as an outlet and in particular the aforementioned opening. However, it is conceivable that the valve housing has other openings leading to the fluid chamber or another inner chamber of the valve housing, such as an opening for introducing a sensor device or one or more other process fluid inlets or outlets.

[0019] The regulating valve comprises in particular a drive device, which is fixed or can be fixed on the valve housing by an additional device. Preferably, the drive device is connected to the valve housing by the additional device and other additional components, such as a yoke. Preferably, the regulating valve comprises at least one sealing member, such as a bellows and an additional sealing ring, etc., for sealing the through-channel in the additional device or another additional component up to the drive device. Preferably, the additional device is connected to the valve housing by a connecting wall in a material-joined manner, in particular welded to the valve housing. Preferably, the valve housing forms a connecting wall, which is designed to correspond to the connecting wall of the additional device. In particular, the connecting walls are connected to each other in a material-joined manner in the installed state, in particular welded to each other. The connecting wall of the valve housing preferably extends around the opening of the valve housing on the outer side of the valve housing, in particular in the direction facing away from the fluid chamber. Preferably, the connecting wall of the valve housing is basically designed as a hollow cylinder. In particular, the opening of the valve housing and / or the connecting wall of the valve housing have a maximum inner diameter, which is greater than the maximum outer diameter of the accommodating protrusion of the additional device. The at least one circulation guide mechanism preferably extends from the fluid chamber to the concave portion or extends into the concave portion. In particular, the at least one circulation guide mechanism extends through the opening of the valve housing. Preferably, the recess is arranged in the connecting region of the attachment device and the valve housing, in particular relative to a center axis of the attachment device, at the height of the connecting point. Preferably, the recess is at least partially delimited by a valve housing connecting wall.

[0020] It is also proposed that the fluid chamber is fluidically connected via at least one circulation guide through the valve housing opening to a recess formed by the additional device at the connecting wall, wherein the recess is bounded by the connecting wall, the valve housing wall, in particular the valve housing connecting wall and the receiving projection of the additional device. An advantageously compact design can be achieved, in particular because the valve housing defines the circulation guide and the recess together. In particular, the valve housing is designed in such a way that the medium flowing into the fluid chamber at least partially enters the recess through the circulation guide when the medium flows through the throttling point. In particular, a flow path for the medium that is essentially unimpeded in terms of fluid technology is formed between the throttling point and the inlet of the circulation guide into the fluid chamber, which is in particular essentially free of obstacles.

[0021] It is further proposed that the regulating valve comprises a connection part, in particular a weld, for materially connecting the additional device and the valve housing, wherein the connection part is arranged on the outer side of the connecting wall facing away from the recess. An advantageous simple and quick connection of the additional device to the valve housing can be achieved, in particular because the connection part is designed to be advantageously accessible from the outside. The connection can be achieved without tools for holding or orienting the valve housing or the additional device. The connection of the valve housing and the additional device can be advantageously carried out directly at the place of use in the process equipment. In particular, the connection part is arranged at the outer edges of the connecting wall of the additional device and the valve housing that are abutted against each other. Particularly preferably, the connection part is arranged perpendicular to the central axis of the additional device and is spaced from the opening of the valve housing or the outer wall of the valve housing. Particularly preferably, the connecting wall of the valve housing is designed in such a way that the maximum inner diameter of the connecting wall of the valve housing is substantially equal to the maximum inner diameter of the connecting wall of the additional device. Particularly preferably, the connecting wall of the valve housing is designed in such a way that the maximum inner diameter of the connecting wall of the valve housing is greater than the minimum inner diameter of the valve housing opening.

[0022] The additional device according to the present invention and / or the regulating valve according to the present invention should not be limited to the above-mentioned applications and embodiments. In particular, the additional device according to the present invention and / or the regulating valve according to the present invention can have a number of individual elements, components and units other than the number mentioned here in order to meet the working method described here. In addition, values ​​within the numerical range known in this article and also within the limits should be regarded as public and can be adopted arbitrarily. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Further advantages are derived from the following description of the drawings. An embodiment of the utility model is shown in the drawings. The drawings and the description contain a large number of combined features. The technician can also appropriately view the features individually and combine them into other meaningful combinations, among which:

[0024] Figure 1 An external perspective view of a regulating valve according to the invention with an additional device according to the invention, which is connected to the valve housing of the regulating valve in a material-joined manner,

[0025] Figure 2 A schematic cross-sectional view of the regulating valve of the utility model in the region of the additional device of the utility model is shown,

[0026] Figure 3 A perspective view showing the attachment device of the invention in a state separated from the valve housing, and

[0027] Figure 4 A schematic cross-sectional view of a regulating valve having an attachment device according to the present invention in the connection region between the attachment device and the valve housing is shown.

[0028] Reference numerals list

[0029] 10. Regulating valve

[0030] 12 valve housing

[0031] 14 Throttling Point

[0032] 16 Additional devices

[0033] 18 Inlet

[0034] 20 Outlet

[0035] 22 Valve seat

[0036] 24 Valve components

[0037] 26 Adjustment lever

[0038] 28 Yoke

[0039] 30 Opening

[0040] 32 First connecting wall

[0041] 34 Second connecting wall

[0042] 36 Main Body

[0043] 38 cover

[0044] 40 Through the channel

[0045] 42 Central axis

[0046] 44 Concave part

[0047] 46 Accommodate protrusions

[0048] 48 End side

[0049] 50 Circulation guide mechanism

[0050] 52 Fluid chamber

[0051] 54 End

[0052] 56 Inner wall

[0053] 58 First inner diameter

[0054] 60 Second inner diameter

[0055] 64 Guide surface

[0056] 66 end

[0057] 68 Other ends

[0058] 70 Embedded part

[0059] 72 Sealing bellows

[0060] 74 First Height

[0061] 76 Height

[0062] 78 Support surface

[0063] 80 Edge Sealing Bellows

[0064] 84 Cross section

[0065] 86 Vertical extension

[0066] 88 Chamfer

[0067] 90 Edge

[0068] 92 bottom side

[0069] 94 Interface

[0070] 95 First minimum radial distance

[0071] 96 Second minimum radial distance

[0072] 98 Connection parts

[0073] 100 Outer edge

[0074] 102 outer wall DETAILED DESCRIPTION

[0075] exist Figure 1 FIG. 1 shows a control valve 10 for use in process equipment such as chemical equipment, power plants, food processing equipment, etc. The control valve 10 includes a throttling point 14 (see FIG. Figure 2 ) and an additional device 16 fixed to the valve housing 12. The additional device 16 forms a housing cover for the valve housing 12. The valve housing 12 has an inlet 18 and an outlet 20, wherein the throttling point 14 is substantially arranged between the inlet 18 and the outlet 20. The regulating valve 10 also has a valve seat 22 (see Figure 2The regulating valve 10 includes a valve member 24 and a regulating rod 26 (see Figure 2 ), which is provided for connecting the valve member 24 to a drive device (not shown in the figure) of the regulating valve 10. In particular, the drive device is set up to drive the movement of the valve member 24 so as to open or close the valve housing 12 or the throttling point 14 of the regulating valve 10. The additional device 16 forms a through-hole for the adjusting rod 26. The additional device 16 is opposite to the throttling point 14 or is arranged above the throttling point. The valve member 24 can be translated along the lifting axis by the adjusting rod 26 or the drive device. The valve member 24 is preferably designed as a lifting valve member, such as a valve plug or a valve cone. The valve member is set up to regulate the process fluid flow flowing through the regulating valve 10 of the process equipment. According to the utility model, the regulating valve 10 is equipped with a mounting structure for guiding the valve member 24.

[0076] The valve housing 12 and the additional device 16 are connected to each other in a material-joined manner, in particular, welded to each other. The regulating valve 10 also includes other additional components fixed to the additional device 16. The additional device 16 is arranged between the valve housing 12 and the drive device. The regulating valve 10 includes a load-bearing component designed as a yoke 28, which is placed on the additional device 16 and is suitable for carrying various attached devices such as a position regulator. Preferably, the additional device 16 is arranged between the valve housing 12 and the load-bearing component designed as a yoke 28. Figure 1 The regulating valve 10 shown is particularly suitable for use with media at relatively high or relatively low temperatures, for example in cold areas or at temperatures above 200-300° C., as in applications using liquid lithium, wherein the distance between the valve housing 12 guiding the respective medium and the drive device can be kept relatively large due to the additional device 16, the yoke 28 and / or other additional components.

[0077] The valve housing 12 defines an opening 30 (see Figure 2 ), through which the adjusting rod 26 can move, wherein the additional device 16 is particularly designed to cover the opening 30 substantially completely, in particular with the exception of the through-channel for the adjusting rod 26. In the installed state, the opening 30 of the valve housing 12 is substantially completely covered by the additional device 16. The additional device 16 is connected to the valve housing 12, in particular to a second connecting wall 34 of the valve housing 12, in a materially connected manner via a first connecting wall 32 of the additional device 16 (see also Figure 4 ).

[0078] Figure 2A cross-sectional view of the regulating valve 10 in the region of the additional device 16 is shown. The additional device 16 comprises a main body 36, which comprises a cover 38, wherein the cover 38 is provided for closing the opening 30 of the valve housing 12 of the regulating valve 10. The additional device 16 is provided for being at least partially moved into the valve housing 12 when connected to the valve housing 12. The valve member 24 can be placed in a sealing engagement with the valve seat 22, in particular through a drive device and an adjusting rod 26, in order to close the throttle point 14. The valve seat 22 and the valve member 24 are coordinated with each other for sealing engagement. The additional device 16 is provided for fixing, in particular, being mounted on the valve housing 12 of the regulating valve 10. Preferably, the additional device 16, in particular the main body 36, forms a through-channel 40 for the valve member 24 of the regulating valve 10. The additional device 16 is arranged between the drive device of the regulating valve 10 and the valve housing 12 in the state in which it is mounted on the valve housing 12. The additional device 16 is preferably provided for closing the through-channel 40 in a fluid-tight, in particular, pressure-tight manner in the installed state.

[0079] The main body 36 has a central axis 42, which extends through the cover 38. The central axis 42 of the main body 36 or the central axis of the first connecting wall 32 of the additional device 16, especially the cover 38 and / or the additional device 16 is oriented substantially parallel to the stroke axis of the regulating valve 10. In the design shown in the figure, the central axis 42 of the main body 36 and / or the central axis of the first connecting wall 32 of the additional device 16, especially the cover 38 and / or the additional device 16 is substantially the lifting axis of the regulating valve 10. The main body 36 forms the first connecting wall 32 of the additional device 16, which is formed as a part of the cover 38 and is provided for being connected to the valve housing 12, especially the second connecting wall 34 of the valve housing 12 in a material-joined manner. Each connecting wall (the first connecting wall 32, the second connecting wall 34) extends substantially completely around the central axis 42 as seen along the central axis 42. The first connecting wall 32 and the second connecting wall 34 are respectively designed to be annular, especially as seen along the central axis 42. The first connecting wall 32 and the second connecting wall 34 are respectively designed to be hollow cylindrical.

[0080] The main body 36 defines a recess 44 through the first connecting wall 32 on the cover 38 up to the central axis 42. The additional device 16 includes a receiving protrusion 46, which is provided for receiving the regulating rod 26 of the regulating valve 10 and extends on the cover 38 to an end side 48 of the main body 36. Preferably, the receiving protrusion 46 defines the through-channel 40 to the outside at least in the area of ​​the cover 38. The receiving protrusion 46 is designed to be integral with the main body 36. The receiving protrusion 46 is arranged at least partially in front of the first connecting wall 32 as seen along the central axis 42 from the end side 48 and defines the recess 44 through the outer side of the receiving protrusion 46. The receiving protrusion 46 forms a plurality of circulation guide mechanisms 50, which are provided for connecting the fluid chamber 52 of the valve housing 12 to the recess 44 in a state connected to the valve housing 12. The circulation guide mechanisms 50 are constructed in substantially the same structure. The circulation guide mechanisms 50 are substantially evenly distributed around the central axis 42 as seen along the central axis 42 (see also). Figure 3 ).

[0081] The first connecting wall 32 of the additional device 16 extends completely around the receiving projection 46 as seen along the center axis 42. The recess 44 is formed by the first connecting wall 32 of the additional device 16 in the radial direction toward the center axis 42 as seen along the center axis 42, and is particularly surrounded by the connecting wall. The receiving projection 46 delimits the recess 44 up to the center axis 42, wherein the first connecting wall 32 of the additional device 16 delimits the recess 44 in a direction radially facing away from the center axis 42. The recess 44 is formed between the receiving projection 46 and the first connecting wall 32 of the additional device 16. The recess 44 extends, in particular perpendicularly to the center axis 42, beyond an end 54 of the first connecting wall 32 of the additional device 16 facing the end side 48 of the main body 36 to an inner wall 56 of the valve housing 12 that delimits the opening of the valve housing 12.

[0082] The fluid chamber 52 is fluidically connected to the recess 44 formed on the first connecting wall 32 by the additional device 16 through the opening 30 of the valve housing 12 by means of the circulation guide 50, wherein the recess 44 is bounded by the first connecting wall 32 of the additional device 16, the second connecting wall 34 of the valve housing 12 and the receiving protrusion 46 of the additional device 16. The circulation guide 50 is bounded outwardly by the valve housing 12, in particular the inner wall 56 of the valve housing 12 forming the opening 30 of the valve housing 12, at least in the area between the fluid chamber 52 and the recess 44. Preferably, the second connecting wall 34 of the valve housing 12 has a first medium inner diameter 58 substantially the same as the first connecting wall 32 of the additional device 16 perpendicular to the center axis 42. Preferably, the medium inner diameter and / or the smallest first inner diameter 58 of the second connecting wall 34 of the valve housing 12 is larger than the medium inner diameter and / or the largest second inner diameter 60 of the inner wall 56 of the valve housing 12 that at least partially defines the circulation guide 50.

[0083] The receiving projection 46 has a basic shape that is essentially a hollow cylinder, in which a cavity for receiving the adjustment rod 26 is formed around the central axis 42 by the inner surface of the receiving projection 46, wherein the outer surface of the receiving projection 46 facing away from the central axis 42 at least partially defines the recess 44. The receiving projection 46 forms a plurality of guide surfaces 64, each of which defines one of the circulation guide mechanisms 50. Each guide surface 64 is arranged on the outer side of the receiving projection 46 facing away from the central axis 42. Each guide surface 64 preferably extends all the way into the recess 44 or at least partially defines it.

[0084] The main body 36 is designed in such a way that each circulating guide 50 extends substantially to an end 66 of the receiving projection 46 facing the end side 48 of the main body 36. Each circulating guide 50 extends substantially over the entire length of the receiving projection 46, in particular from an end 66 of the receiving projection 46 facing the end side 48 of the additional device 16 to another end 68 of the receiving projection 46 facing away from the end side 48, and is particularly formed along the central axis 42 at the height of an end with the recess 44 and an end of the first connecting wall 32 of the additional device 16. The main body 36 is substantially designed in one piece, wherein in particular the receiving projection 46 and the first connecting wall 32 are jointly designed in one piece, in particular as part of a casting or connected by material bonding. However, it is also conceivable that some parts of the additional device 16, in particular the receiving projection 46 and the first connecting wall 32 are connected or can be connected to each other by a force-fitting and / or form-fitting connection.

[0085] The regulating valve 10 comprises an embedded portion 70, which is arranged to guide the regulating rod 26. The embedded portion 70 is arranged, in particular fixed, on the receiving attachment of the attachment 16. The embedded portion 70 forms a plurality of flow channels to connect the fluid chamber 52 of the valve housing 12 to the through-channel 40 in the attachment 16. The regulating rod 26 and the valve member 24 are integrally formed. However, other designs of the valve member 24 are also conceivable. The regulating valve 10 comprises a sealing unit for sealing the fluid chamber 52 and the inner chamber for driving connected thereto. The sealing unit comprises a sealing bellows 72, which is connected to the main body 36 of the attachment 16 or another additional member of the regulating valve 10 (not shown in the figure) at the upper end and is connected to the regulating rod 26 at the lower end. Preferably, the sealing bellows 72 is connected to the main body 36 or other additional members of the regulating valve 10 in a material-bonded manner. Preferably, the sealing bellows 72 is connected to the regulating rod 26 by a compression joint or a material-bonded connection.

[0086] Figure 3A perspective view of the additional device 16 in a state separated from the valve housing 12 is shown. Each circulation guide mechanism 50 is designed as a recessed portion in the outer wall of the receiving projection 46, which extends substantially parallel to the central axis 42. The circulation guide mechanism 50 is defined by one of the guide surfaces 64 of the receiving projection 46. Each guide surface 64 is designed to be arc-shaped. In particular, the guide surfaces 64 form the circulation guide mechanism 50 in a groove-like manner, which extends substantially straight and substantially parallel to the central axis 42 along the extension height of the receiving projection 46. The circulation guide mechanism 50 preferably extends through the entire first height 74 of the receiving projection 46.

[0087] The receiving projection 46 has a basic shape that is essentially tubular or hollow cylindrical. The receiving projection 46 extends from the end side 48 of the main body 36 along the central axis 42 through the entire height 76 of the recess 44 (see also Figure 2 In particular, the maximum height of the recess 44 is when the attachment device 16 is separated from the valve housing 12 (eg Figure 3 The attachment 16 is provided with a first connecting wall 32 (shown in the figure) extending from an end of the first connecting wall 32 of the attachment 16 facing the end side 48 of the main body 36 to an end of the receiving projection 46 facing away from the end side 48 of the main body 36. The end side 48 of the main body 36 is an outer side of the main body 36, which includes an end of the main body 36 formed along the center axis 42. Preferably, the attachment 16 is provided for being mounted on the valve housing 12 with the end side 48 facing forward when connected to the valve housing 12, wherein in particular the end side 48 of the main body 36 or the receiving projection 46 is provided for at least partially moving into the valve housing 12.

[0088] The receiving projection 46 forms a plurality of bearing surfaces 78, each bearing surface being arranged in particular on the outer side of the receiving projection 46 facing away from the central axis 42. Each of the bearing surfaces 78 adjoins two guide surfaces 64. In particular, each of the guide surfaces 64 adjoins two of the bearing surfaces 78, respectively. The bearing surfaces 78 are preferably uniformly distributed along the central axis 42, preferably substantially around the central axis 42. The guide surfaces 64 are preferably uniformly distributed along the central axis 42, preferably substantially around the central axis 42. In particular, the following design is also conceivable, in which the additional device 16 comprises only one circulating guide mechanism 50. The bearing surface 78 and the guide surface 64 are preferably adjacent to each other via an edge 80. Alternatively, it is conceivable that a chamfer is provided between the guide surface 64 and the bearing surface 78, respectively, or that the guide surface 64 and the bearing surface 78 are connected and transitioned, wherein in particular the outer surface of the receiving projection 46 is continuously arc-shaped.

[0089] Each circulation guide mechanism 50 is designed as a recess in the accommodating projection 46 relative to the bearing surface 78. Each circulation guide mechanism 50 extends substantially parallel to the central axis 42. Each circulation guide mechanism 50 is designed to be substantially linear. Alternatively, it is conceivable that the circulation guide mechanism 50 is designed to pass through the through-channel of the accommodating projection 46, for example, it is designed as a flow channel and / or is formed in an arc shape (not shown in the figure). It is particularly conceivable that the circulation guide mechanism 50 constituted as a through-channel that penetrates the accommodating projection 46 includes at least one outlet adjacent to the concave hollow portion 44. It is particularly conceivable that the circulation guide mechanism 50 constituted as a through-channel that penetrates the accommodating projection 46 includes at least one inlet, which is arranged on the inner side of the accommodating projection 46 toward the central axis 42, on the outer side of the accommodating projection 46 that is spaced apart from the concave hollow portion 44, especially facing away from the central axis 42, and / or on the end face of the accommodating projection 46 toward the end side 48.

[0090] The main body 36 or the receiving projection 46, in particular the guide surface 64, is designed so that each circulating guide mechanism 50 has a substantially circular, in particular a perfectly circular or elliptical cross section 84, in particular along the central axis 42. The main body 36 is designed so that each circulating guide mechanism 50 has a perfectly circular cross section 84, in particular along the central axis 42, wherein an elliptical cross section is also conceivable. The main body 36 is designed so that each circulating guide mechanism 50 has a substantially constant cross section 84, in particular parallel to the central axis 42, along the longitudinal extension 86 of the respective circulating guide mechanism 50. Alternatively, it is conceivable that the circulating guide mechanism 50 has a variable cross section, in particular, the cross section is reduced toward the recess 44 along the longitudinal extension 86 of the circulating guide mechanism 50, or has a cross section different from the substantially circular cross section 84. The receiving projection 46 forms a chamfer 88 on the outer side facing the end side 48. It is also conceivable to design the receiving projection 46 to have a rounded shape. Alternatively or additionally, it is conceivable that the receiving projections 46 in the end regions of the endless guides 50 facing the end sides 48 each form a rounding or chamfer which extends along the cross-sectional contour of the respective endless guide 50 (not shown in the figures).

[0091] The body 36, in particular the receiving projection 46, is designed in such a way that a recirculating guide 50 in each case substantially completely extends over the maximum height of the bearing surface 7, wherein in particular the maximum height of the bearing surface 78 is oriented substantially parallel to the central axis 42. The recirculating guide 50 in each case extends along the central axis 42 to the end side 48 of the body 36 as far as an edge 90 of the receiving projection 46, in particular forming a chamfer 88, preferably to a bottom side 92 of the receiving projection 46 facing the end side 48, which defines the outermost circumference of the receiving projection 46. In particular, the outermost circumference of the receiving projection 46 is formed by the guide surface 64 and the supporting surface 78. The body 36, in particular the receiving projection 46, extends at the end side 48 in a proximal region around the central axis 42 beyond the bottom side 92 of the receiving projection 46 along the central axis 42, wherein in particular the receiving projection 46 in this region, viewed along the central axis 42, has a maximum outer diameter which is smaller than the minimum outer diameter of the outermost circumference of the receiving projection 46, at which the recirculating guide 50 is in particular arranged.

[0092] The receiving projections 46 form interfaces 94, which respectively at least partially delimit the recesses 44 and are designed to be spaced apart from the circulation guide mechanism 50. The interfaces 94 are in particular formed by the bearing surfaces 78 of the receiving projections 46 or are designed to be congruent therewith as viewed along the center axis 42. It is also conceivable that the interfaces 94 and the bearing surfaces 78 of the receiving projections 46 are designed to be separated from each other and / or to be radially offset relative to the center axis 42 as viewed along the center axis 42. The first minimum radial distance 95 of these interfaces 94 or bearing surfaces 78 from the center axis 42 is greater than the second minimum radial distance 96 of the outer surface / guide surface 64 of the receiving projections 46 that delimits the circulation guide mechanism 50 from the center axis 42.

[0093] The endless guide means 50 are substantially uniformly distributed around the central axis 42 as viewed along the central axis 42. The endless guide means 50 are arranged offset around the central axis 42 at substantially constant mutual angles as viewed along the central axis 42. The body 36, in particular the receiving projection 46, is designed such that the same maximum width of the endless guide means 50 corresponds to at most 40%, preferably at most 50%, and particularly preferably at most 60% of the maximum outer circumference of the receiving projection 46 as viewed in the circumferential direction around the central axis 42.

[0094] Figure 4A detailed schematic diagram of the connection area between the additional device 16 and the valve housing 12 is shown. The regulating valve 10 includes a connection location 98, in particular a weld seam, for materially connecting the additional device 16 and the valve housing 12, wherein the connection location 98 is arranged on the outer side of the additional device 16 facing away from the recess 44. Preferably, the regulating valve 10 does not include other seals such as sealing rings in the area of ​​the connection location 98 for sealing the connection location 98 to the outside. The connection location 98 is arranged at the outer edges 100 of the first connecting wall 32 of the additional device 16 and the second connecting wall 34 of the valve housing 12 that abut against each other. The connection location 98 is spaced apart from the opening 30 of the valve housing 12 or the outer wall and / or upper outer wall 102 of the valve housing 12, in particular facing the additional device, when viewed perpendicularly to the central axis 42 of the additional device 16. The second connecting wall 34 of the valve housing 12 is designed so that the maximum first inner diameter 58 of the second connecting wall 34 of the valve housing 12 is substantially the same as the maximum inner diameter of the first connecting wall 32 of the additional device 16. The second connecting wall 34 of the valve housing 12 is designed such that the maximum first inner diameter 58 of the second connecting wall 34 of the valve housing 12 is greater than the minimum second inner diameter 60 of the opening 30 of the valve housing 12. Particularly preferably, the connecting portion 98 is arranged on the outer side of the first connecting wall 32 and the second connecting wall 34, wherein the first connecting wall 32 and the second connecting wall 34 preferably do not extend beyond the outer side of the first connecting wall 32 and the second connecting wall 34 surrounding the connecting portion 98 as viewed along the center axis 42.

[0095] The body 36 is designed in such a way that each endless guide 50 extends parallel to the center axis 42 over a large portion of the maximum height 76 of the recess 44. Preferably, each endless guide 50 extends over the entire height 76 of the recess 44. Preferably, each endless guide 50 extends at least to the height of the connection point 98, viewed perpendicularly to the center axis 42. In particular, each endless guide 50 extends beyond the connection point 98, viewed perpendicularly to the center axis 42.

[0096] Other embodiments of the present invention are also conceivable, in which the additional device 16 or the regulating valve 10 has a different number of elements and / or components and / or a different size or shape than the exemplary embodiment shown above.

Claims

1. An attachment device for a regulating valve (10) of a process plant, the attachment device having at least one body (36) including a cover (38), wherein: The cover (38) is provided for closing an opening (30) of a valve housing (12) of the regulating valve (10), wherein the body (36) has a central axis (42) extending through the cover (38), wherein the body (36) forms a first connecting wall (32), which is formed as a part of the cover (38) and is provided for being connected to the valve housing (12) in a materially joined manner, wherein the first connecting wall (32) extends completely around the central axis (42) as seen along the central axis (42), wherein the body (36) delimits a recess (44) up to the central axis (42) via the first connecting wall (32) on the cover (38), and wherein the attachment The device comprises at least one accommodating protrusion (46), which is configured to accommodate the regulating rod (26) of the regulating valve (10) and extends from the cover portion (38) to an end side (48) of the main body (36), wherein the accommodating protrusion (46) is at least partially arranged in front of the first connecting wall (32) as viewed along the center axis (42) from the end side (48) and defines the recess (44) on an outer side, and is characterized in that the accommodating protrusion (46) forms at least one circulation guide mechanism (50), which is configured to connect the fluid chamber (52) of the valve housing (12) to the recess (44) when connected to the valve housing (12).

2. The attachment according to claim 1, characterized in that: At least one of the circulation guides (50) is designed as a recess in the outer wall of the receiving projection (46), and the recess extends parallel to the center axis (42).

3. The attachment according to claim 1 or 2, characterized in that: The main body (36) is designed such that at least one of the circulation guides (50) has a circular cross section (84).

4. The attachment according to claim 1, characterized in that: The receiving projection (46) has a basic shape of a hollow cylinder, wherein a cavity for receiving the adjusting rod (26) is provided around the center axis (42) and is formed by the inner surface of the receiving projection (46), wherein the outer surface of the receiving projection (46) facing away from the center axis (42) at least partially delimits the recess (44).

5. The attachment according to claim 1, characterized in that: The main body (36) is designed such that at least one of the circulation guides (50) extends to an end (66) of the receiving projection (46) facing the end side (48) of the main body (36).

6. The attachment according to claim 1, characterized in that: The body (36) is designed such that at least one of the circulation guides (50) extends parallel to the center axis (42) over at least a majority of the maximum height (76) of the recess (44).

7. The attachment according to claim 1, characterized in that: The receiving projection (46) forms a plurality of circulating guides (50), wherein the circulating guides (50) are distributed around the central axis (42) when viewed along the central axis (42).

8. The attachment according to claim 1, characterized in that: The first connecting wall (32) is formed as a part of the cover part (38) and is provided for being connected to a wall of the valve housing (12) in a materially bonded manner.

9. The attachment according to claim 3, characterized in that: The main body (36) is designed such that at least one of the circulation guides (50) has a circular cross section (84) viewed along the center axis (42).

10. The attachment according to claim 7, characterized in that: The circulation guide mechanisms (50) are designed to have the same structure.

11. A regulating valve for use in a process plant, the regulating valve comprising a valve housing (12) forming a throttling point (14), the regulating valve comprising a regulating rod (26), wherein: The valve housing (12) forms an opening (30), the regulating rod (26) is able to move through the opening (30), and the regulating valve has an additional device according to any one of claims 1 to 10, wherein the additional device (16) is connected to the valve housing (12) in a material-joined manner via a first connecting wall (32) of the additional device (16), and wherein at least one circulation guide mechanism (50) of the additional device (16) connects the fluid chamber (52) of the valve housing (12) to a recess (44) formed at the first connecting wall (32).

12. The regulating valve according to claim 11, characterized in that: The fluid chamber (52) is fluidically connected to a recess (44) formed on the first connecting wall (32) by the additional device (16) through the opening (30) of the valve housing (12) via at least one of the circulation guide mechanisms (50), wherein the recess (44) is defined by the first connecting wall (32), the wall of the valve housing (12) and the receiving protrusion (46) of the additional device (16).

13. The regulating valve according to claim 11 or 12, characterized in that: A connecting point (98) is provided for connecting the additional device to the valve housing (12) in a materially bonded manner, wherein the connecting point (98) is arranged on an outer side of the first connecting wall (32) facing away from the recess (44).

14. The regulating valve according to claim 13, characterized in that: A weld seam is provided for connecting the additional device and the valve housing (12) in a materially bonded manner.

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