valve trim

Abstract

A valve internal includes a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite the first end. Each flow channel includes a throat and an expansion chamber, and each throat is nested between the expansion chambers of directly adjacent flow channels.

Description

Technical Field

[0001] This disclosure generally relates to valve internals for control valves, and more specifically, to valve internals for cavitation control and noise reduction. Background Technology

[0002] In typical control valves, cavitation occurs when the liquid flowing through the valve experiences a high pressure drop, resulting in noise and vibration. Cavitation occurs when the fluid evaporates and then returns to a liquid state, for example, when the fluid passes through a restrictor, such as between the valve plug / disc and the valve seat. Due to the pressure drop and velocity increase at the restrictor, the fluid may reach its vaporization point. Cavitation causes noise and vibration, which can damage the control valve. This phenomenon is particularly prone to occur in ball valves and butterfly valves because the pressure drop only occurs in one stage.

[0003] In some control valves, valve internals have been used to regulate fluid flow through the control valve and in an attempt to reduce noise, cavitation, and turbulence. For example, valve internals exist that consist of multiple cylindrical tubes welded together and positioned directly after the valve plug or disc of the control valve. However, the cross-sections of the flow channels in these valve internals are relatively isomorphic, with all tubes or cells having uniform and comparable dimensions and shapes, which does not provide any pressure drop chambers to aid in cavitation and noise reduction.

[0004] Multistage cavitation control and noise reduction valve internals have also been used, in which identical flow passages with one or more expansion chambers are formed adjacent to each other through the valve internals. However, the dimensions of adjacent expansion chambers require the flow passages to be spaced apart and limit the flow rate through the valve internals.

[0005] Therefore, there is a need for a valve internal for control valves that provides flow passages, each with one or more expansion chambers to reduce cavitation and the noise and vibration caused by cavitation, while still maximizing the flow rate through the valve internal. Summary of the Invention

[0006] According to one exemplary aspect of the invention, a valve internal includes: a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite to the first end. Each flow channel includes a throat and an expansion chamber, and each throat is nested between expansion chambers of directly adjacent flow channels.

[0007] Furthermore, according to any one or more of the foregoing exemplary aspects of the invention, the valve internals may also include any one or more of the following preferred forms in any combination.

[0008] In a preferred embodiment, each expansion chamber is offset in the flow direction from the expansion chamber of the directly adjacent flow channel, such that each expansion chamber is directly adjacent to the throat of the directly adjacent flow channel in a direction perpendicular to the flow direction.

[0009] In another preferred embodiment, the body is a single integral piece.

[0010] In another preferred embodiment, each throat has a constant square cross-sectional shape and each expansion chamber has a first portion having a constant octagonal cross-sectional shape.

[0011] In another preferred embodiment, each expansion chamber has a second portion having an octagonal cross-sectional shape at a first end of the second portion and tapering to a square cross-sectional shape at a second end of the second portion to a throat.

[0012] In another preferred embodiment, each throat has four sides, each side having a first length, and each first portion of each expansion chamber includes each side parallel to the sides of the corresponding throat and has four sides having a second length equal to the first length.

[0013] According to another exemplary aspect of the invention, a ball valve includes: a valve body having an inlet and an outlet; and a valve plug positioned within the valve body and rotatable between an open position and a closed position. A valve internal is positioned within the valve plug and rotates with the valve plug. The valve internal includes a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite the first end. Each flow channel includes a throat and an expansion chamber, and each throat is nested between the expansion chambers of directly adjacent flow channels.

[0014] According to another exemplary aspect of the invention, a ball valve includes: a valve body having an inlet and an outlet; and a valve plug positioned within the valve body and rotatable between an open position and a closed position. The valve internal has a first portion positioned in the outlet and a second portion extending from the first portion and into the valve plug. The valve internal includes a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite to the first end. Each flow channel includes a throat and an expansion chamber, and each throat is nested between expansion chambers of directly adjacent flow channels.

[0015] According to another exemplary aspect of the invention, a butterfly valve includes: a valve body having an inlet and an outlet; and a valve disc positioned within the valve body and rotatable between a closed position and an open position, wherein in the closed position the valve disc engages a valve seat and prevents fluid flow between the inlet and the outlet, and in the open position the valve disc is spaced apart from the valve seat and allows fluid flow between the inlet and the outlet. A valve internal is positioned downstream of the valve disc within the outlet. The valve internal includes a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite the first end. Each flow channel includes a throat and an expansion chamber, and each throat is nested between the expansion chambers of directly adjacent flow channels.

[0016] Furthermore, according to any one or more of the foregoing exemplary aspects of the invention, the butterfly valve may also include any one or more of the following preferred forms in any combination.

[0017] In a preferred embodiment, the first end of the valve internal has a concave arc shape corresponding to the outer surface of the valve disc.

[0018] According to another exemplary aspect of the invention, a valve internal includes: a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite to the first end. Each flow channel includes a throat and an expansion chamber, and each throat has a constant square cross-sectional shape and each expansion chamber has a first portion having a constant octagonal cross-sectional shape.

[0019] Furthermore, according to any one or more of the foregoing exemplary aspects of the invention, the valve internals may also include any one or more of the following preferred forms in any combination.

[0020] In a preferred embodiment, the body is a single integral part.

[0021] In another preferred embodiment, each expansion chamber has a second portion having an octagonal cross-sectional shape at a first end of the second portion and tapering to a square cross-sectional shape at a second end of the second portion to a throat.

[0022] In another preferred embodiment, each throat is nested between expansion chambers of directly adjacent flow channels.

[0023] In another preferred embodiment, each expansion chamber is offset in the flow direction from the expansion chamber of the directly adjacent flow channel, such that each expansion chamber is directly adjacent to the throat of the directly adjacent flow channel in a direction perpendicular to the flow direction.

[0024] In another preferred embodiment, each throat has four sides, each side having a first length, and each first portion of each expansion chamber includes each side parallel to the sides of the corresponding throat and has four sides having a second length equal to the first length.

[0025] According to another exemplary aspect of the invention, a ball valve includes: a valve body having an inlet and an outlet; and a valve plug positioned within the valve body and rotatable between an open position and a closed position. A valve internal is positioned within the valve plug and rotates with the valve plug. The valve internal includes a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite the first end. Each flow channel includes a throat and an expansion chamber, and each throat has a constant square cross-sectional shape and each expansion chamber has a first portion having a constant octagonal cross-sectional shape.

[0026] According to another exemplary aspect of the invention, a ball valve includes: a valve body having an inlet and an outlet; and a valve plug positioned within the valve body and rotatable between an open position and a closed position. The valve internal has a first portion positioned in the outlet and a second portion extending from the first portion and into the valve plug. The valve internal includes a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite to the first end. Each flow channel includes a throat and an expansion chamber, and each throat has a constant square cross-sectional shape and each expansion chamber has a first portion having a constant octagonal cross-sectional shape.

[0027] According to another exemplary aspect of the invention, a butterfly valve includes: a valve body having an inlet and an outlet; and a valve disc positioned within the valve body and rotatable between a closed position and an open position, wherein in the closed position the valve disc engages a valve seat and prevents fluid flow between the inlet and the outlet, and in the open position the valve disc is spaced apart from the valve seat and allows fluid flow between the inlet and the outlet. A valve internal is positioned downstream of the valve disc within the outlet. The valve internal includes a body having a plurality of parallel flow channels extending from a first end of the body to a second end of the body opposite the first end. Each flow channel includes a throat and an expansion chamber, and each throat has a constant square cross-sectional shape and each expansion chamber has a first portion having a constant octagonal cross-sectional shape.

[0028] Furthermore, according to any one or more of the foregoing exemplary aspects of the invention, the butterfly valve may also include any one or more of the following preferred forms in any combination.

[0029] In a preferred embodiment, the first end of the valve internal has a concave arc shape corresponding to the outer surface of the valve disc. Attached Figure Description

[0030] Figure 1 This is a front view of the first exemplary valve internals.

[0031] Figure 2 It is along Figure 1 The line 2-2 in the middle is cut off Figure 1 A cross-sectional view of the valve internals.

[0032] Figure 3 It has Figure 1 A cross-sectional view of an exemplary ball valve with valve internals.

[0033] Figure 4 This is a front view of the second exemplary valve internals.

[0034] Figure 5 It is along Figure 4 The line 5-5 is cut off. Figure 4 A cross-sectional view of the valve internals.

[0035] Figure 6 It has Figure 4 A cross-sectional view of an exemplary ball valve with valve internals.

[0036] Figure 7 This is a front view of the third exemplary valve internals.

[0037] Figure 8 It is along Figure 7 The line 8-8 in the middle is cut off Figure 7 A cross-sectional view of the valve internals.

[0038] Figure 9 It has Figure 7 A cross-sectional view of an exemplary butterfly valve with valve internals.

[0039] Figure 10A -C can be used Figure 1 , 4 Examples of throats and expansion chambers of different sizes for exemplary valve internals, 7. Detailed Implementation

[0040] The exemplary valve internals shown and described herein utilize stacked or nested flow channels to provide multi-stage cavitation control and noise reduction, providing maximum flow area through the valve internals. The valve internals have multiple flow channels, each with multiple converging nozzles and rapidly expanding pressure drop (expansion) chambers, and the multi-stage pressure drop chambers are stacked as efficiently as possible within adjacent flow channels. This allows for maximizing the flow area through the valve internals, enabling higher flow capacity while still reducing noise and cavitation.

[0041] In the example shown in this article, to effectively stack or nest the flow channels, each flow channel has an octagonal shape and converges into a pressure drop chamber with a square cross-section at the throat. The number of converging and expanding stages in the valve internals can vary depending on the desired total pressure drop and flow rate. The arrangement of the octagonal expansion chamber with the square nozzle allows the flow channels to nest with each other, with the pressure drops staggered along the flow axis, thereby maximizing the flow area.

[0042] refer to Figures 1-2 The diagram illustrates a first exemplary valve internal 10, which can be used, particularly with a ball valve. The valve internal 10 has a body 15 with a peripheral shape 20 that allows the valve internal 10 to be positioned within and secured to the valve plug of the ball valve. The peripheral shape 20 can vary depending on the type and design of the valve plug and the ball valve. The body 15 of the valve internal 10 is preferably a single integral piece and can be manufactured using additive manufacturing techniques, such as direct metal laser sintering, full-melt powder bed fusion, etc. Using additive manufacturing processes, the 3D design of the body 15 is divided into multiple layers, for example, layers approximately 20-50 micrometers thick. A powder bed representing the first layer of the design, such as a powder-based metal, is then placed, and a laser or electron beam sinters the first layer of the design together. A second powder bed representing the second layer of the design is then placed on the first sintered layer, and the second layer is sintered together. This continues layer by layer to form the complete body 15. Using additive manufacturing technology to manufacture valve internals for control valves allows for the free production of flow channels with various shapes, geometries, and features that cannot be achieved using current standard casting or drilling techniques.

[0043] Multiple flow channels 35 extend from a first end 25 of the body 15 through the body 15 to a second end 30 opposite the first end 25, and can be used to characterize and / or regulate the fluid flowing through the valve internals 10, for example, by reducing the fluid pressure as the fluid flows through the flow channels 35. The flow channels 35 are preferably parallel, and each flow channel 35 includes at least one throat 40 and at least one expansion chamber 55 in fluid communication with the throat 40. Figure 2 As seen in the example shown, each flow channel 35 includes two throats 40 and two expansion chambers 55. However, the flow channel 35 can have any number of alternating throats 40 and expansion chambers 55 depending on the level of cavitation and noise reduction required for a particular application. Each throat 40 has a square cross-sectional shape, which in the flow direction (e.g., Figure 2The length along the throat 40 (as indicated by the arrow in the diagram) is constant. Each expansion chamber 55 has a first portion 60 and a second portion 75. The first portion 60 has an octagonal cross-sectional shape, and its length along the first portion 60 is constant in the flow direction. The second portion 75 has the octagonal cross-sectional shape of the first portion 60 at a first end 80 and tapers to a square cross-sectional shape of the throat 40 at the second end 85. Each expansion chamber 55 is offset in the flow direction from the expansion chamber 55 of the directly adjacent flow channel 35. For example, as shown... Figure 2 As shown, the expansion chamber 55a of the first flow channel 35a is longitudinally offset from the expansion chamber 55b of the second adjacent flow channel 35b in the flow direction, and the expansion chamber 55b of the second adjacent flow channel 35b is also longitudinally offset from the expansion chamber 55c of the third adjacent flow channel 35c in the flow direction. The preferred square, octagonal, and tapered shapes of the throats 40 and expansion chambers 55, as well as the offset positioning of the expansion chambers 55 of the flow channels 35, allow the expansion chambers 55 to be positioned directly adjacent to the throats 40 of the directly adjacent flow channels 35 in a direction perpendicular to the flow direction, and allow each throat 40 to be nested between the expansion chambers 55 of the directly adjacent flow channels 35. This staggering of the expansion chambers 55, the nesting of the throats 40 between the expansion chambers 55, and the complementary shapes of the throats 40 and expansion chambers 55 allow for the formation of a greater number of flow channels 35 through the body 15 of the valve internals 10, which maximizes the flow area through the valve internals 10 while maintaining multi-stage cavitation control and noise reduction.

[0044] refer to Figure 3 An exemplary ball valve 100 is shown, which includes a valve internal 10. The ball valve 100 has a valve body 105 having an inlet 110 and an outlet 115. A valve plug 120 is positioned within the valve body 105 between the inlet 110 and the outlet 115 and is rotatable within the valve body 105 between an open position and a closed position. In the open position, the valve plug 120 allows fluid flow between the inlet 110 and the outlet 115, and in the closed position, the valve plug 120 prevents fluid flow between the inlet 110 and the outlet 115. The valve internal 10 is positioned and secured within the valve plug 120 such that the valve internal 10 rotates with the valve plug 120.

[0045] refer to Figures 4-5The diagram illustrates a second exemplary valve internal 10A, which can be used, in particular, with a ball valve. Valve internal 10A is identical to valve internal 10 described above, except that the body 15A of valve internal 10A has an outer peripheral shape 20A that allows valve internal 10A to be positioned and secured within the outlet of the ball valve and extends into the valve plug of the ball valve. In this example, the body 15A of valve internal 10A has a first portion 90, preferably cylindrical, configured to be positioned in the outlet of the ball valve, and a second portion 95 extending from the first portion 90 and into the valve plug. Like valve internal 10, the body 15A of valve internal 10A is preferably a single integral piece and can be manufactured using additive manufacturing techniques, such as direct metal laser sintering, full-melt powder bed fusion, etc.

[0046] Similar to valve internal 10, flow passages 35 extend through the body 15A of valve internal 10A from a first end 25 of the body 15A to a second end 30 opposite the first end 25, and can be used to characterize and / or regulate the fluid flowing through valve internal 10A, for example, by reducing the fluid pressure as the fluid flows through the flow passages 35. The flow passages 35 are preferably parallel, and each flow passage 35 includes at least one throat 40 and at least one expansion chamber 55 in fluid communication with the throat 40. Figure 5 As seen in the illustrated example, each flow passage 35 may include any number of alternating throats 40 and expansion chambers 55, depending on the location of each flow passage 35 within the valve internals 10A. Each throat 40 has a square cross-sectional shape, which in the flow direction (e.g., Figure 5 The length along the throat 40 (as indicated by the arrow in the diagram) is constant. Each expansion chamber 55 has a first portion 60 and a second portion 75. The first portion 60 has an octagonal cross-sectional shape that is constant along its length in the flow direction. The second portion 75 has the octagonal cross-sectional shape of the first portion 60 at a first end 80 and tapers to a square cross-sectional shape of the throat 40 at the second end 85. Each expansion chamber 55 is offset in the flow direction from the expansion chamber 55 of the directly adjacent flow channel 35, as described above. The preferred square, octagonal, and tapered shapes of the throat 40 and expansion chambers 55, along with the offset positioning of the expansion chambers 55 of the flow channel 35, allow the expansion chambers 55 to be positioned directly adjacent to the throats 40 of the directly adjacent flow channel 35 in a direction perpendicular to the flow direction and allow each throat 40 to be nested between the expansion chambers 55 of the directly adjacent flow channel 35. The staggered expansion chambers 55, the nesting of throats 40 between expansion chambers 55, and the complementary shapes of throats 40 and expansion chambers 55 allow for the formation of a greater number of flow channels 35 through the body 15A of the valve inner element 10A. This maximizes the flow area through the valve inner element 10A while maintaining multi-stage cavitation control and noise reduction.

[0047] refer to Figure 6 An exemplary ball valve 200 is shown, which includes a valve internal 10A. The ball valve 200 has a valve body 205 having an inlet 210 and an outlet 215. A valve plug 220 is positioned within the valve body 205 between the inlet 210 and the outlet 215 and is rotatable within the valve body 205 between an open position and a closed position. In the open position, the valve plug 220 allows fluid flow between the inlet 210 and the outlet 215, and in the closed position, the valve plug 220 prevents fluid flow between the inlet 210 and the outlet 215. A first portion 90 of the valve internal 10A is positioned and secured within the outlet 215 of the valve body 205, and a second portion 95 extends from the first portion 90 and enters the valve plug 220.

[0048] refer to Figures 7-8 The diagram illustrates a third exemplary valve internal 10B, which can be used with a butterfly valve or a ball valve. Valve internal 10B is identical to valve internal 10 described above, except that the body 15B of valve internal 10B has a cylindrical outer peripheral shape 20B that allows valve internal 10B to be positioned downstream of the valve disc or valve plug and secured within the outlet of the butterfly or ball valve. When used in a butterfly valve, the first end 25 of the body 15B of valve internal 10B may have a concave arcuate shape that corresponds to the outer surface of the valve disc when the valve disc is rotated from the closed position to the open position. The body 15B of valve internal 10B is preferably a single integral piece and can be manufactured using additive manufacturing techniques, such as direct metal laser sintering, full-melt powder bed fusion, etc., as described above.

[0049] Similar to valve internal 10, flow passages 35 extend through the body 15B of valve internal 10B from a first end 25 of the body 15B to a second end 30 opposite the first end 25, and can be used to characterize and / or regulate the fluid flowing through valve internal 10B, for example, by reducing the fluid pressure as the fluid flows through the flow passages 35. The flow passages 35 are preferably parallel, and each flow passage 35 includes at least one throat 40 and at least one expansion chamber 55 in fluid communication with the throat 40. Figure 8 As seen in the illustrated example, each flow passage 35 may include any number of alternating throats 40 and expansion chambers 55, depending on the position of each flow passage 35 within the valve internals 10B. Each throat 40 has a square cross-sectional shape, which in the flow direction (e.g., ...) Figure 8The length along the throat 40 (as indicated by the arrow in the diagram) is constant. Each expansion chamber 55 has a first portion 60 and a second portion 75. The first portion 60 has an octagonal cross-sectional shape that is constant along its length in the flow direction. The second portion 75 has the octagonal cross-sectional shape of the first portion 60 at a first end 80 and tapers to a square cross-sectional shape of the throat 40 at the second end 85. Each expansion chamber 55 is offset in the flow direction from the expansion chamber 55 of the directly adjacent flow channel 35, as described above. The preferred square, octagonal, and tapered shapes of the throat 40 and expansion chambers 55, along with the offset positioning of the expansion chambers 55 of the flow channel 35, allow the expansion chambers 55 to be positioned directly adjacent to the throats 40 of the directly adjacent flow channel 35 in a direction perpendicular to the flow direction and allow each throat 40 to be nested between the expansion chambers 55 of the directly adjacent flow channel 35. The staggered expansion chambers 55, the nesting of throats 40 between expansion chambers 55, and the complementary shapes of throats 40 and expansion chambers 55 allow for the formation of a greater number of flow channels 35 through the body 15B of the valve inner element 10B. This maximizes the flow area through the valve inner element 10B while maintaining multi-stage cavitation control and noise reduction.

[0050] refer to Figure 9 An exemplary butterfly valve 300 is shown, which includes a valve internal 10B. The butterfly valve 300 has a valve body 305 having an inlet 310 and an outlet 315. A valve disc 320 is positioned within the valve body 305 between the inlet 310 and the outlet 315 and is rotatable within the valve body 305 between a closed position and an open position. In the closed position, the valve disc 320 engages a valve seat 330 and prevents fluid flow between the inlet 310 and the outlet 315. In the open position, the valve disc 320 is spaced apart from the valve seat 330 and allows fluid flow between the inlet 310 and the outlet 315. The valve internal 10B is positioned downstream of the valve disc 320 and fixed within the outlet 315 of the valve body 305, and a first end 25 of the valve internal 10B has a recessed arcuate shape that corresponds to the outer surface 325 of the valve disc 320 when the valve disc 320 is rotated from the closed position to the open position.

[0051] In all the exemplary valve internals 10, 10A, 10B, each throat 40 has four sides 45, each side 45 having an equal first length 50. Furthermore, each first portion 60 of each expansion chamber 55 has four sides 65 corresponding to and parallel to each side 45 of the corresponding adjacent throat 40, each side 65 having a second length 70, the second length 70 being the same as the first length 50 of the side 45 of the throat 40. (Reference) Figure 10A-C illustrates different variations in the first and second lengths 50, 70 of the sides 45, 65 of the throat 40 and the expansion chamber 55. These variations in the first and second lengths 50, 70 still allow the flow passages 35 to be nested as described above to maximize the flow area through the valve internals 10, 10A, 10B, while also allowing cavitation and noise reduction to be controlled by adjusting the pressure drop through the flow passages 35. For example, Figure 10B In the example shown, the first and second lengths, 50 and 70, are greater than... Figure 10A The first and second lengths in the example shown are 50 and 70, respectively. Therefore, in... Figure 10B In the example shown, the difference in cross-sectional area between the throat 40 and the expansion chamber 55 is less than [missing information]. Figure 10A The differences shown in the example, and when the fluid flows through a... Figure 10B The larger flow channels of 50 or 70 mm shown will not have such a large pressure drop. Instead, Figure 10C In the example shown, the first and second lengths, 50 and 70, are less than... Figure 10A The first and second lengths in the example shown are 50 and 70, respectively. Therefore, in... Figure 10C In the example shown, the difference in cross-sectional area between the throat 40 and the expansion chamber 55 is greater than that between the throat 40 and the expansion chamber 55. Figure 10A The differences shown in the example, and when the fluid flows through a... Figure 10C A larger pressure drop will occur when the flow channel 35 has a smaller length of 50, 70 as shown. Therefore, the lengths 50, 70 can be adjusted to meet any desired pressure drop through the flow channel 35 for a specific application.

[0052] Although various embodiments have been described above, this disclosure is not intended to be limited thereto. Variations may be made to the disclosed embodiments, which remain within the scope of the appended claims.

Claims

1. A valve internal component, comprising: The body has multiple parallel flow channels extending from a first end of the body to a second end of the body opposite to the first end. in Each flow channel includes a throat and an expansion chamber; and Each throat is nested between expansion chambers of directly adjacent flow channels; Each throat has a constant square cross-sectional shape and each expansion chamber has a first portion having a constant octagonal cross-sectional shape.

2. The valve trim of claim 1, wherein, Each expansion chamber is offset in the flow direction from the expansion chamber of the directly adjacent flow channel, such that each expansion chamber is directly adjacent to the throat of the directly adjacent flow channel in a direction perpendicular to the flow direction.

3. The valve internals as described in claim 1, wherein, The body is a single integral component.

4. The valve internals as claimed in claim 1, wherein, Each expansion chamber has a second portion, which has an octagonal cross-sectional shape at a first end of the second portion and tapers to a square cross-sectional shape at a second end of the throat.

5. The valve internals as claimed in claim 1, wherein: Each larynx has four sides, each side having a first length; and Each first section of each expansion chamber includes each of the sides parallel to the corresponding throat and has four sides of a second length equal to the first length.

6. A ball valve comprising the valve internals as described in claim 1, wherein the ball valve comprises: The valve body has an inlet and an outlet; as well as A valve plug, which is positioned within the valve body and is rotatable between an open position and a closed position; in The valve internals are positioned within the valve plug and rotate with the valve plug.

7. A ball valve comprising the valve internals as claimed in claim 1, wherein the ball valve comprises: The valve body has an inlet and an outlet; as well as A valve plug, which is positioned within the valve body and is rotatable between an open position and a closed position; in The valve internals have a first portion located in the outlet and a second portion extending from the first portion and into the valve plug.

8. A butterfly valve, comprising the valve internals as described in claim 1, wherein the butterfly valve comprises: The valve body has an inlet and an outlet; as well as A valve disc, positioned within the valve body and rotatable between a closed position and an open position, wherein in the closed position the valve disc engages the valve seat and prevents fluid flow between the inlet and the outlet, and in the open position the valve disc is spaced apart from the valve body and allows fluid flow between the inlet and the outlet; wherein The valve internals are positioned downstream of the valve disc within the outlet.

9. The butterfly valve as described in claim 8, wherein, The first end of the valve internal has a concave arc shape corresponding to the outer surface of the valve disc.

10. A valve internal component, comprising: The body has multiple parallel flow channels extending from a first end of the body to a second end of the body opposite to the first end. in Each flow channel includes a throat and an expansion chamber; and Each throat has a constant square cross-sectional shape and each expansion chamber has a first portion having a constant octagonal cross-sectional shape.

11. The valve internals as claimed in claim 10, wherein, The body is a single integral component.

12. The valve internals as claimed in claim 10, wherein, Each expansion chamber has a second portion, which has an octagonal cross-sectional shape at a first end of the second portion and tapers to a square cross-sectional shape at a second end of the throat.

13. The valve internals as claimed in claim 12, wherein, Each throat is nested between expansion chambers of directly adjacent flow channels.

14. The valve internals as claimed in claim 13, wherein, Each expansion chamber is offset in the flow direction from the expansion chamber of the directly adjacent flow channel, such that each expansion chamber is directly adjacent to the throat of the directly adjacent flow channel in a direction perpendicular to the flow direction.

15. The valve internals as claimed in claim 10, wherein: Each larynx has four sides, each side having a first length; and Each first section of each expansion chamber includes each of the sides parallel to the corresponding throat and has four sides of a second length equal to the first length.

16. A ball valve comprising the valve internals as claimed in claim 10, the ball valve comprising: The valve body has an inlet and an outlet; as well as A valve plug, which is positioned within the valve body and is rotatable between an open position and a closed position; in The valve internals are positioned within the valve plug and rotate with the valve plug.

17. A ball valve comprising the valve internals as claimed in claim 10, the ball valve comprising: The valve body has an inlet and an outlet; as well as A valve plug, positioned within the valve body and rotatable between an open and a closed position; wherein... The valve internals have a first portion located in the outlet and a second portion extending from the first portion and into the valve plug.

18. A butterfly valve comprising the valve internals as described in claim 10, the butterfly valve comprising: The valve body has an inlet and an outlet; as well as A valve disc, positioned within the valve body and rotatable between a closed position and an open position, wherein in the closed position the valve disc engages the valve seat and prevents fluid flow between the inlet and the outlet, and in the open position the valve disc is spaced apart from the valve seat and allows fluid flow between the inlet and the outlet; wherein... The valve internals are positioned downstream of the valve disc within the outlet.

19. The butterfly valve as claimed in claim 18, wherein, The first end of the valve internal has a concave arc shape corresponding to the outer surface of the valve disc.

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