Valve sealing structure

Abstract

The invention discloses a valve sealing structure. An example apparatus includes: a valve body including a seat, and a valve plug including a disc holder, the disc holder including a recess; a seat ring located in the recess, the seat ring including a first surface and a second surface abutting the first surface, the first surface contacting the seat when the valve plug is in the closed position; and a disk cover coupled to the disk holder, the disk cover including a third surface and a fourth surface abutting the third surface, the third surface being flush with the first surface, the fourth surface contacting the second surface and applying an axial preload force to the seat ring.

Description

Technical Field

[0001] The present invention relates generally to valves and, more particularly, to valve sealing arrangements. Background Art

[0002] In recent years, disc seals (e.g., disc-shaped sealing structures, seat rings, etc.) have been used in valves to control fluid flow through an opening. The disc seal may be part of a plug that blocks a central portion of the opening, and the disc seal may define a perimeter of a portion of the plug and contact a seat (e.g., a plug seat) to block the perimeter of the opening. Thus, when the valve is in a closed position, the disc seal prevents fluid from flowing through the opening. Summary of the Invention

[0003] A valve typically includes a seat ring (e.g., a seal, a disc seal structure) to contact a seat of the valve body (e.g., the periphery of a pipe). When the valve is in a closed position, the seat ring prevents fluid from flowing between the seat and the seat ring. For example, the plug of the valve may include a seat ring, a disc retainer, and a disc cover. The disc retainer may include a groove (e.g., a recess) for the seat ring. In addition, the disc cover may be coupled to the disc retainer and compress the seat ring to provide an axial preload force to the seat ring. Preloading the seat ring improves the sealing ability associated therewith. For example, preloading can cause the seat ring to conform to irregularities and defects in the contact surface to ensure a tighter seal and reduce leakage. In addition, preloading can help reduce seal or gasket slack, improve load distribution and resilience to temperature changes, and prevent seat ring movement to increase the pressure at which the seat ring can maintain sealing ability.

[0004] During operation, the valve plug can move (e.g., translate) along an axis (e.g., the longitudinal axis of the valve) to move the seat ring toward and away from the seat to control fluid flow through the valve. In some cases, a surface of the disc cover is positioned at an angle relative to the longitudinal axis of the valve such that when the valve is in the closed position, the surface at least partially faces the conduit through which fluid flow is blocked.

[0005] In some known embodiments, the surface of the seat ring that contacts the seat when the valve is in the closed position (e.g., the sealing surface) is positioned at the same angular orientation as the first surface of the disc cover. However, in some such embodiments, the adjacent ends of the sealing surface and the surface of the disc cover are separated by a gap, so that the boundaries of the flow path defined by the seat ring and the disc cover are not flat, which causes the fluid flowing through the valve to exhibit undesirable flow properties, such as vortexes or other inefficient and / or unpredictable flow.

[0006] In some other known embodiments, the sealing surface is adjacent to the surface of the disc cover. However, in such known embodiments, the other surface of the seat ring adjacent to the sealing surface (e.g., the non-sealing surface) is substantially parallel to the longitudinal axis of the valve so that the sealing surface can abut the surface of the disc cover. Thus, a relatively small angle is defined between the sealing surface and the non-sealing surface at the top end of the seat ring. Several factors can cause the top end to rupture or protrude from the groove of the disc retainer, which adversely affects the sealing ability and / or fluid flow. For example, the rupture or protrusion can be caused by an area difference between the seat ring and a portion of the disc cover extending through the seat ring. Additionally or alternatively, the rupture or protrusion can be caused by thermal expansion of a valve component (e.g., an O-ring) that contacts the seat ring.

[0007] Examples disclosed herein provide a valve plug that defines a smooth flow path boundary while also maintaining sealing capabilities at relatively high pressures. Examples disclosed herein include a seat ring having a sealing surface that is aligned along the same geometric plane as an adjacent surface of a disc cover and is adjacent to the adjacent surface of the disc cover (e.g., flush with the adjacent surface of the disc cover). The example seat ring disclosed herein also has a non-sealing surface that is adjacent to the sealing surface and is not parallel to the longitudinal axis of the valve. In this way, the non-sealing surface receives a preload force from the disc cover near the end of the sealing surface, which increases the contact area of ​​the disc cover to apply the preload to the seat ring. Therefore, the seat ring receives preload over a larger portion of the seat ring width (e.g., between its inner diameter and outer diameter). Therefore, the seat ring can provide sealing at relatively high pressures while also providing a smooth flow path boundary at the transition between the seat ring and the disc cover to minimize undesirable flow properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 An exemplary valve including a disc retainer, a seat ring, and a disc cover according to examples disclosed herein is illustrated.

[0009] Figure 2 The diagram shows the first example position Figure 1 valve.

[0010] Figure 3 The second example position is shown Figure 1 valve.

[0011] Figure 4 The diagram shows the Figure 3 The second example position Figure 1-Figure 3 An enlarged view of a portion of the valve.

[0012] Figure 5 Pictured Figure 1-Figure 4 Separate view of the seat ring.

[0013] Figure 6 Pictured Figure 1-Figure 3Separate view of the valve disc cover.

[0014] Figure 7 Pictured Figure 1-Figure 3 An isolated view of the valve disc holder.

[0015] Figure 8 The diagram shows an example of a method that can be implemented in accordance with the examples disclosed herein. Figure 1 Another example seat ring in a valve.

[0016] Figure 9 The diagram shows an example of a method that can be implemented in accordance with the examples disclosed herein. Figure 1 Another example seat ring in a valve.

[0017] Figure 10 The diagram shows an example of a method that can be implemented in accordance with the examples disclosed herein. Figure 1 Another example seat ring in a valve.

[0018] Figure 11 The diagram shows an example of a method that can be implemented in accordance with the examples disclosed herein. Figure 1 Another example seat ring in a valve.

[0019] Figure 12 The diagram shows an example of a method that can be implemented in accordance with the examples disclosed herein. Figure 1 Another example seat ring in a valve.

[0020] Generally, the same reference numbers are used throughout the drawings and accompanying written description to refer to the same or like parts.The drawings are not necessarily drawn to scale. DETAILED DESCRIPTION

[0021] Turning to the accompanying drawings, Figure 1 An example valve 100 is shown that includes a valve body 102 and a valve plug 104 (e.g., a seat seal structure). The valve plug 104 includes a valve stem 105, a disc retainer 106, a seat ring 108 (e.g., a seal or gasket), and a disc cover 110. The valve body 102 includes an inner wall 112 and a seat 114 (e.g., a plug seat) positioned around an orifice. In some examples, the seat 114 is located at the end of the inner wall 112.

[0022] exist Figure 1 In the example shown, the seat ring 108 is located between the disc holder 106 and the disc cover 110. Specifically, the disc holder 106 includes a recess 116 (e.g., a recessed portion, a groove, etc.) in which the seat ring 108 is located. The seat ring 108 is disc-shaped (e.g., annular). A first portion 118 (e.g., an inner portion, at Figure 110 (a lower portion in the orientation of the valve 100 in FIG. 1 ) extends through the inner diameter (e.g., opening) of the seat ring 108 and couples to the disc holder 106. In this example, the first portion 118 includes threads 119 to couple the disc cover 110 to the disc holder 106.

[0023] exist Figure 1 In the example shown, the second portion 120 (eg, the outer portion, Figure 1 106 , and the disc cover 110 is threadably coupled to the disc holder 106. The disc cover 110 is preferably a substantially parallel disc, e.g., a substantially parallel disc, e.g., a substantially parallel disc. The disc cover 110 is preferably a substantially parallel disc, e.g., a substantially parallel disc, e.g., a substantially parallel disc. The disc cover 110 is preferably a substantially parallel disc, e.g., a substantially parallel disc, e.g., a substantially parallel disc. The disc cover 110 is preferably a substantially parallel disc, e.g., a substantially parallel disc, e.g., a substantially parallel disc. The disc cover 110 is preferably a substantially parallel disc, e.g., a substantially parallel disc, e.g., a substantially parallel disc. The disc cover 110 is preferably a substantially parallel disc, e.g., a substantially parallel disc, e.g., a substantially parallel disc. The disc cover 110 is preferably a substantially parallel disc, e.g., a substantially parallel disc, e.g., a substantially parallel disc.

[0024] exist Figure 1 In the example shown, the valve plug 104 can be moved between (i) a first position (e.g., an open position) in which the seat ring 108 is separated from the seat 114 to enable fluid to flow therebetween, and (ii) a second position (e.g., a closed position) in which the seat ring 108 contacts the seat 114 to block or prevent fluid from flowing through the orifice in the valve body 102. Specifically, when the valve plug 104 is in the first position, the valve plug 104 opens a flow path between the seat ring 108 and the seat 114 to enable fluid to flow from the first conduit 122 to the second conduit 124, as shown in conjunction with the valve body 102. Figure 2 When the valve plug 104 is in the second position, the valve plug 104 prevents the fluid in the first conduit 122 of the valve body 102 from flowing through the seat 114 and into the second conduit 124 downstream of the first conduit 122, as shown in conjunction with Figure 3 and Figure 4 In some examples, the position of the valve plug 104 can be adjusted to one or more intermediate positions between the first position and the second position to adjust the space provided between the seat ring 108 and the seat 114 and, accordingly, adjust the flow rate of the fluid flowing from the first conduit 122 to the second conduit 124 .

[0025] exist Figure 1In the illustrated example, valve 100 includes a spring 126 to facilitate movement of valve plug 104. Specifically, spring 126 urges valve plug 104 along axis 128 (e.g., the longitudinal axis of valve plug 104) between a first position and a second position. That is, valve plug 104 is translatably coupled to valve body 102. In some examples, spring 126 moves valve plug 104 to the second position when pressure downstream of valve plug 104 satisfies (e.g., is greater than, greater than, or equal to) a pressure threshold. For example, when the pressure satisfies the pressure threshold, spring 126 can be released from the biased configuration to translate valve plug 104 and press seat ring 108 against seat 114 to close the flow path defined by valve 100. In some other examples, valve 100 includes another actuator (e.g., a servo motor) to translate valve plug 104 along axis 128 between the first position and the second position based on a desired flow rate.

[0026] Figure 2 Pictured Figure 1 The valve 100 includes a valve plug 104 in an example open position 200. Figure 2 In the embodiment, the seat ring 108 is separated from the seat 114 to allow fluid to flow therebetween. Figure 2 , an orifice 202 defined by the seat 114 is aligned along a geometric plane 204 that is substantially perpendicular to the axis 128 along which the valve plug 104 translates. In this example, the orifice 202 has a diameter of approximately 10 millimeters (mm).

[0027] Figure 3 Pictured Figure 1 The valve 100 includes a valve plug 104 in an example closed position 300. Figure 3 In the closed position 300, the seat ring 108 contacts the seat 114 to prevent fluid flow therebetween (eg, through the orifice 202 ( Figure 2 For example, the valve plug 104 can be translated along the axis 128 to Figure 2 The open position 200 moves to Figure 3 The closed position 300 is configured to reduce the flow rate of the fluid flowing from the first conduit 122 to the second conduit 124.

[0028] Figure 4 Pictured Figure 1-Figure 3 An enlarged view of a portion of the valve 100 including the Figure 3 1. The valve plug 104 is in the closed position 300 of the example. As a result, the seat ring 108 contacts the seat 114. In some examples, when the valve plug 104 is in the closed position 300, the seat ring 108 is pressed against the seat 114 to increase the contact area therebetween and maintain the seal at relatively high pressures. In some such examples, the seat ring 108 undergoes elastic deformation.

[0029] exist Figure 4 In the example shown, the seat ring 108 includes a first surface 402 (e.g., a first face, a first inclined face), a second surface 404 (e.g., a second face, a second inclined face), a third surface 406 (e.g., a third face), a fourth surface 408 (e.g., a fourth face), a fifth surface 410 (e.g., a fifth surface), and a sixth surface 412. When the valve plug 104 is in the closed position 300, the first surface 402 contacts the seat 114. The second surface 404, the third surface 406, and the fourth surface 408 contact the disc cover 110. The fifth surface 410 and the sixth surface 412 contact the disc retainer 106.

[0030] exist Figure 4 In the example shown, first surface 402 is adjacent to second surface 404. Adjacent surfaces herein can be connected by sharp edges or curved edges (e.g., chamfers or fillets) at respective ends of the surfaces. As used herein, a first surface and a second surface adjacent to the first surface are distinct and are referred to as being separated from the second surface when a change in angular orientation exists between the first surface and the second surface.

[0031] exist Figure 4 In the example shown, the first surface 402 and the second surface 404 comprise inclined surfaces that are inclined relative to the axis 128 along which the valve plug 104 translates. Thus, the first surface 402 and the second surface 404 are non-perpendicular and non-parallel to the axis 128. Similarly, the first surface 402 and the second surface 404 are non-perpendicular to the geometric plane 204 ( Figure 2 ) is inclined, and the seat 114 is positioned about the aperture. In some examples, the first surface 402 is positioned (e.g., oriented) at a first angle between 15 degrees (°) and 90° relative to the axis 128. In some examples, the second surface 404 is positioned (e.g., oriented) at a second angle between 0° and 150° relative to the axis 128. For example, the first angle can be approximately 45° relative to the axis 128 in a first direction, and the second angle can be approximately 45° relative to the axis 128 in a second direction opposite the first direction.

[0032] In some examples, the third surface 406 abuts the second surface 404; the fourth surface 408 abuts the third surface 406; the fifth surface 410 abuts the fourth surface 408; and / or the sixth surface 412 abuts the first surface 402 and / or the fifth surface 410. In some examples, the third surface 406 and / or the fifth surface 410 are substantially parallel to the axis 128 along which the valve plug 104 translates. In some examples, at least a portion of the fourth surface 408 is substantially perpendicular to the axis 128.

[0033] exist Figure 4In the example shown, disk cover 110 includes a seventh surface 414 (e.g., the seventh face, the third bevel surface), an eighth surface 416 (e.g., the eighth face, the fourth bevel surface), a ninth surface 418 (e.g., the ninth face), and a tenth surface 420. In some examples, seventh surface 414 abuts eighth surface 416; eighth surface 416 abuts ninth surface 418; and / or ninth surface 418 abuts tenth surface 420. Seventh surface 414 is flush with first surface 402. That is, first surface 402 and seventh surface 414 abut and are aligned along the same geometric plane 424. Therefore, seventh surface 414 is positioned (e.g., oriented) at a first angle (e.g., the same angle as first surface 402) relative to axis 128. Thus, when fluid flows through the transition region 422, the transition region 422 in the flow path boundary between the seat ring 108 and the disk cover 110 (e.g., between the first surface 402 and the seventh surface 414) does not create eddies in the fluid flow or affect the flow characteristics in an undesirable manner (e.g., in an unpredictable manner, in a manner that reduces the controllability of the flow properties).

[0034] exist Figure 4 In the example shown, eighth surface 416 is in contact with second surface 404, and ninth surface 418 is in contact with third surface 406. Eighth surface 416 is positioned at a second angle relative to axis 128 (e.g., at the same angle as second surface 404). In some examples, ninth surface 418 is positioned substantially perpendicular to axis 128. In such examples, the angle of eighth surface 416 relative to ninth surface 418 is greater than 90°. In some examples, tenth surface 420 is substantially parallel to axis 128.

[0035] exist Figure 4 In the example shown, the eighth surface 416 and the ninth surface 418 apply an axial preload force to the seat ring 108. That is, the eighth surface 416 and the ninth surface 418 apply a force that presses the seat ring 108 against the disc holder 106. Specifically, the eighth surface 416 applies a first force perpendicular to the second surface 404 to the second surface 404, and the ninth surface 418 applies a second force perpendicular to the third surface 406 to the third surface 406. Therefore, the first force is oblique with respect to the axis 128, while the second force is substantially parallel to the axis 128. In this way, the threads 119 ( Figure 1 ) is capable of converting the rotation of the disk cover 110 into a linear motion that applies a first force and a second force.

[0036] Advantageously, the angular orientation of the second surface 404 and the eighth surface 416 increases the surface area over which the disc cover 110 can apply a preload to the seat ring 108. Additionally, when the first surface 402 is flush with the seventh surface 414, the surfaces 404, 416 adjacent to the first surface 402 and the seventh surface 414, respectively, can receive and apply a preload proximate the first surface 402. In this manner, the seat ring 108 and the disc cover 110 enable an increased preload to be applied to the seat ring 108 for improved alignment with the orifice 202 ( Figure 2 ) while avoiding negatively impacting the fluid flow properties.

[0037] exist Figure 4 In the example shown, disc retainer 106 includes an eleventh surface 426 (e.g., the eleventh face), a twelfth surface 428 (e.g., the twelfth face), and a thirteenth surface 430 (e.g., the thirteenth face). In some examples, eleventh surface 426 is contiguous with twelfth surface 428 and thirteenth surface 430. In some examples, eleventh surface 426 is substantially parallel to axis 128. In some examples, at least a portion of twelfth surface 428 is substantially perpendicular to axis 128. Thirteenth surface 430 defines a portion of the boundary of the flow path in valve body 102. Eleventh surface 426 and twelfth surface 428 define a recess 432 (e.g., a groove or trench) in disc retainer 106, in which seat ring 108 is positioned. Specifically, eleventh surface 426 contacts sixth surface 412, and twelfth surface 428 contacts fifth surface 410.

[0038] exist Figure 4In the example shown, the fifth surface 410 includes a raised portion 434 (e.g., a raised edge, a recess, a notch), and the twelfth surface 428 includes a protrusion 436 that extends past a portion (e.g., a flat portion) of the fifth surface 410 and into a cavity defined by the raised portion 434. Specifically, the raised portion 434 can define a first serrated portion of the fifth surface 410, and the protrusion 436 can define a second serrated portion of the twelfth surface 428 that engages with the first serrated portion. For example, the raised portion 434 and the protrusion 436 can define concentric serrations. Advantageously, the raised portion 434 and the protrusion 436 block fluid leakage between the fifth surface 428 and the twelfth surface 428, which can eliminate the need for an O-ring between the bottom surface of the seat ring 108 (e.g., the fifth surface 410) and the disc retainer 106. Furthermore, O-rings typically require the seat ring (e.g., seat ring 108) to have a relatively long width (e.g., between fourth surface 408 and sixth surface 412) to provide sufficient contact area between the seat ring and the O-ring to prevent such leakage. Thus, raised portion 434 and protrusion 436 also enable a reduction in the size of seat ring 108 and, therefore, valve plug 104. Although Figure 4 The illustrated example depicts two of the raised portions 434 and corresponding protrusions 436 therein, but the fifth surface 410 and the twelfth surface 428 may each include a different number of raised portions 434 and protrusions 436. For example, the fifth surface 410 and the twelfth surface 428 may each include one raised portion 434 and one protrusion 436. Alternatively, the fifth surface 410 and the twelfth surface 428 may each include more than two raised portions 434 and more than two protrusions 436 therein.

[0039] In some examples, the seat ring 108 includes a first temporary surface 438 (e.g., a first pre-installation surface) between the third surface 406 and the fourth surface 408; a second temporary surface 440 (e.g., a second pre-installation surface) between the fourth surface 408 and the fifth surface 410; and a third temporary surface 442 (e.g., a third pre-installation surface) between the fifth surface 410 and the sixth surface 412. In such examples, when the disc cover 110 presses the seat ring 108 against the disc holder, the temporary surfaces 438, 440, 442 flex to fill gaps between (i) the seat ring 108 and the disc holder 106 and (ii) the seat ring 108 and the disc cover 110. Thus, when the temporary surfaces 438, 440, 442 flex, the temporary surfaces 438, 440, 442 become (e.g., deform, transform) into curved edges between (i) the third surface 406 and the fourth surface 408, (ii) the fourth surface 408 and the fifth surface 410, and (iii) the fifth surface 410 and the sixth surface 412. Thus, the third surface 406 becomes adjacent to the fourth surface 408; the fourth surface 408 becomes adjacent to the fifth surface 410; and when the disc cover 110 presses the seat ring 108 against the disc holder 106, the fifth surface 410 becomes adjacent to the sixth surface 412.

[0040] Figure 5 An isolated view of the seat ring 108 is illustrated, including the first surface 402 , the second surface 404 , the third surface 406 , the fourth surface 408 , the sixth surface 412 , the first temporary surface 438 , the second temporary surface 440 , and the third temporary surface 442 . Figure 6 An isolated view of the disc cover 110 is illustrated, which includes a seventh surface 414 , an eighth surface 416 , a ninth surface 418 , and a tenth surface 420 . Figure 7 An isolated view of the disk holder 106 is illustrated, including the eleventh surface 426 , the twelfth surface 428 , the thirteenth surface 430 , the recess 432 , and the protrusion 436 .

[0041] Figure 8 Another example valve 800 is shown including another example valve body 802 and another example valve plug 804. The valve plug 804 includes a disc retainer 806, a seat ring 808, and a disc cover 810. The valve body 802 includes an inner wall 812 and a seat 814 located around an orifice 816. Figure 1-Figure 4 The orifice 202 of the valve 100 ( Figure 2 ), the valve 800 is substantially similar to Figure 1-Figure 4 Thus, the disc retainer 806, seat ring 808 and disc cover 810 comprise a valve 100 with respect to Figure 1-Figure 4 The valve plug 104 (eg, relative to the disc holder 106 ( Figure 1-Figure 4 and Figure 7 )、Seat ring 108( Figure 1-Figure 5 ) and the tray cover 110( Figure 1-Figure 4 and Figure 6 )) increased width (e.g., larger diameter) to allow for the valve plug 804 to be in the closed position (e.g., Figure 3-Figure 4 Due to the increased width, in addition to the raised portion 434 ( Figure 4 ) and protrusion 436 ( Figure 4 and Figure 7 ) in addition to or in place of the raised portion 434 ( Figure 4 ) and protrusion 436 ( Figure 4 and Figure 7 ), Figure 8 The valve plug 804 includes an O-ring 818 positioned between a portion of a first surface 820 (e.g., a first face, a lower surface) of the seat ring 808 and a second surface 822 (e.g., a second face, an upper surface) of the disc retainer 806 to prevent fluid from flowing between the first surface 820 and the second surface 822.

[0042] Figure 9 The diagram shows an example of a method that can be implemented in Figure 1 The valve body 102 and / or Figure 8 Another example of a valve plug in the valve body 802 of the valve body 802 and a separate view of the disc cover 904. Figure 9 In the example shown, the seat ring 902 includes a first surface 906 (e.g., a first face), a second surface 908 (e.g., a second face), a third surface 910 (e.g., a third face), a fourth surface 912 (e.g., a fourth face), a fifth surface 914 (e.g., a fifth face), a sixth surface 916 (e.g., a sixth face), and a seventh surface 918 (e.g., a seventh face). Figure 9 In the example shown, first surface 906 is contiguous with second surface 908 and seventh surface 918. In some examples, second surface 908 is contiguous with third surface 910; third surface 910 is contiguous with fourth surface 912; fourth surface 912 is contiguous with fifth surface 914; fifth surface 914 is contiguous with sixth surface 916; and / or sixth surface 916 is contiguous with seventh surface 918.

[0043] exist Figure 9 In the example shown, first surface 906 is inclined relative to axis 128, along which seat ring 902 and disk cover 904 translate. Second surface 908, fourth surface 912, and / or sixth surface 916 are substantially perpendicular to axis 128. Third surface 910, fifth surface 914, and / or seventh surface 918 are substantially parallel to axis 128.

[0044] exist Figure 9In the example shown, when the valve plug associated with the seat ring 902 is in the closed position (e.g., Figure 3-Figure 4 When the valve is in the closed position 300), the first surface 906 contacts the seat (not shown) of the valve body (e.g., Figure 1-Figure 4 Seat 114, Figure 8 Thus, when the valve plug is in the open position (e.g., Figure 2 When the valve is in the open position 200), the fluid contacts and flows through the first surface 906. The sixth surface 916 and the seventh surface 918 contact the disc retainer (e.g., Figure 1-Figure 4 and Figure 7 In some examples, the valve plug includes an O-ring positioned between a portion of the sixth surface 916 and the disc retainer. In some examples, the sixth surface 916 and the disc retainer include serrations (e.g., raised portion 434 ( Figure 4 ) and protrusion 436 ( Figure 4 and Figure 7 The second surface 908, the third surface 910, the fourth surface 912, and the fifth surface 914 are in contact with the disk cover 904, as discussed in further detail below.

[0045] exist Figure 9 In the example shown, the disk cover 904 includes an eighth surface 920 (e.g., the eighth side), a ninth surface 922 (e.g., the ninth side), a tenth surface 924 (e.g., the tenth side), an eleventh surface 926 (e.g., the eleventh side), and a twelfth surface 928 (e.g., the twelfth side). Figure 9 , the ninth surface 922 is adjacent to the eighth surface 920 and the tenth surface 924 , and the eleventh surface 926 is adjacent to the tenth surface 924 and the twelfth surface 928 .

[0046] exist Figure 9 In the example shown, the eighth surface 920 is inclined relative to the axis 128. Specifically, the eighth surface 920 is flush with the first surface 906 (e.g., adjacent to and along the same geometric plane as the first surface 906 (e.g., geometric plane 424 ( Figure 4 )) Positioning). The ninth surface 922 and the eleventh surface 926 are substantially perpendicular to the axis 128. The tenth surface 924 and the twelfth surface 928 are substantially parallel to the axis 128.

[0047] exist Figure 9In the example shown, the ninth surface 922 contacts the second surface 908; the tenth surface 924 contacts the third surface 910; the eleventh surface 926 contacts the fourth surface 912; and the twelfth surface 928 contacts the fifth surface 914. The ninth surface 922 applies a first preload compressive force to the second surface 908, and the eleventh surface 926 applies a second preload compressive force to the fourth surface 912. Thus, the disc cover 904 applies the first preload compressive force to the contact seat (e.g., seat 114 ( Figure 1-Figure 4 )、Seat 814( Figure 8 )) of the seat ring 902 (e.g., first surface 906) to abut a surface (e.g., second surface 908) to increase the contact area over which the preload is applied. Consequently, the seat ring 902 receives preload over an increasing distance between its inner and outer diameters, which increases the received preload force and increases the pressure that the seat ring 902 can withstand during operation. When the second surface 908 is raised relative to the fourth surface 912, the first and second preload compressive forces are applied to the seat ring 902 at different heights (e.g., distances from the sixth surface 916). The first and second preload compressive forces are substantially parallel to the axis 128, along which the seat ring 902 and the disc cover 904 translate during operation.

[0048] Figure 10 The diagram shows an example of a method that can be implemented in Figure 1 The valve body 102 and / or Figure 8 Another example of a valve plug in the valve body 802 of the valve body 802 and a separate view of the seat ring 1002 and the disc cover 1004. Figure 10 In the example shown, the seat ring 1002 includes a first surface 1006 (e.g., a first face, a first bevel surface), a second surface 1008 (e.g., a second face, a second bevel surface), a third surface 1010 (e.g., a third face), a fourth surface 1012 (e.g., a fourth face), a fifth surface 1014 (e.g., a fifth face), a sixth surface 1016 (e.g., a sixth face), a seventh surface 1018 (e.g., a seventh face), and an eighth surface 1020 (e.g., an eighth face). Figure 10 In the example shown, first surface 1006 is contiguous with second surface 1008 and eighth surface 1020, and second surface 1008 is contiguous with third surface 1010. In some examples, third surface 1010 is contiguous with fourth surface 1012; fourth surface 1012 is contiguous with fifth surface 1014; fifth surface 1014 is contiguous with sixth surface 1016; sixth surface 1016 is contiguous with seventh surface 1018; and / or seventh surface 1018 is contiguous with eighth surface 1020.

[0049] exist Figure 10In the example shown, first surface 1006 and second surface 1008 are inclined relative to axis 128, along which seat ring 1002 and disk cover 1004 translate during operation. Third surface 1010, fifth surface 1014, and seventh surface 1018 are substantially perpendicular to axis 128. Fourth surface 1012, sixth surface 1016, and eighth surface 1020 are substantially parallel to axis 128.

[0050] exist Figure 10 In the example shown, when the valve plug associated with the seat ring 1002 is in the closed position (e.g., Figure 3-Figure 4 When the valve is in the closed position 300), the first surface 1006 contacts the seat (not shown) of the valve body (e.g., Figure 1-Figure 4 Seat 114, Figure 8 Thus, when the valve plug is in the open position (e.g., Figure 2 When the valve is in the open position 200), the fluid contacts and flows through the first surface 1006. The seventh surface 1018 and the eighth surface 1020 contact the disc retainer of the valve plug (e.g., Figure 1-Figure 4 and Figure 7 In some examples, the valve plug includes an O-ring positioned between a portion of the seventh surface 1018 and the disc retainer. In some examples, the seventh surface 1018 and the disc retainer include serrations (e.g., raised portion 434 ( Figure 4 ) and protrusion 436 ( Figure 4 and Figure 7 The second surface 1008, the third surface 1010, the fourth surface 1012, the fifth surface 1014, and the sixth surface 1016 are in contact with the disk cover 1004, as discussed in further detail below.

[0051] exist Figure 10 In the example shown, the disk cover 1004 includes a ninth surface 1022 (e.g., the ninth surface), a tenth surface 1024 (e.g., the tenth surface), an eleventh surface 1026 (e.g., the eleventh surface), a twelfth surface 1028 (e.g., the twelfth surface), a thirteenth surface 1030 (e.g., the thirteenth surface), and a fourteenth surface 1032 (e.g., the fourteenth surface). The tenth surface 1024 is adjacent to the ninth surface 1022 and the eleventh surface 1026. The eleventh surface 1026 is adjacent to the twelfth surface 1028. The thirteenth surface 1030 is adjacent to the twelfth surface 1028 and the fourteenth surface 1032. Figure 10 In the example shown, the ninth surface 1022 and the tenth surface 1024 are inclined relative to the axis 128. The ninth surface 1022 is flush with the first surface 1006 (e.g., adjacent to and along the same geometric plane as the first surface 1006 (e.g., geometric plane 424 ( Figure 4)) Positioning). The eleventh surface 1026 and the thirteenth surface 1030 are substantially perpendicular to the axis 128. The twelfth surface 1028 and the fourteenth surface 1032 are substantially parallel to the axis 128.

[0052] exist Figure 10 In the example shown, the tenth surface 1024 contacts the second surface 1008; the eleventh surface 1026 contacts the third surface 1010; the twelfth surface 1028 contacts the fourth surface 1012; the thirteenth surface 1030 contacts the fifth surface 1014; and the fourteenth surface 1032 contacts the sixth surface 1016. The tenth surface 1024 applies a first preload compressive force to the second surface 1008 in a direction perpendicular to the second surface 1008 (e.g., in a direction inclined relative to the axis 128). Thus, the disk cover 1004 applies the first preload compressive force to the contact seat (e.g., seat 114 ( Figure 1-Figure 4 )、Seat 814( Figure 8 )) of the seat ring 1002 (e.g., first surface 1006) abuts a surface (e.g., second surface 1008) to increase the contact area for applying preload. Furthermore, the eleventh surface 1026 applies a second preload compressive force to the third surface 1010 in a direction substantially parallel to the axis 128, and the thirteenth surface 1030 applies a third preload compressive force to the fifth surface 1014 in a direction substantially parallel to the axis 128. Thus, the seat ring 1002 receives preload over an increased distance between its inner and outer diameters, which increases the received preload force and increases the pressure that the seat ring 1002 can withstand during operation.

[0053] Figure 11 A portion of another example valve 1100 is shown, which includes a seat 1102 (eg, seat 114 ( Figure 1-Figure 4 )、Seat 814( Figure 8 )) and a valve plug 1104 in a closed position 1106. The valve plug 1104 includes another example seat ring 1108 and another example disc cover 1110. The seat ring 1108 includes a first surface 1112 (eg, a first face, a first bevel surface, Figure 4 a first surface 402 of the embodiment of the present invention), a second surface 1114 (eg, a second surface, a second inclined surface), a third surface 1116 (eg, a third surface), a fourth surface 1118 (eg, a fourth surface, Figure 4 410) and the fifth surface 1120 (e.g., the fifth side, Figure 4 The sixth surface 412). Figure 11In the example shown, first surface 1112 is contiguous with second surface 1114 and fifth surface 1120. In some examples, third surface 1116 is contiguous with second surface 1114 and fourth surface 1118. Thus, second surface 1114 spans from the end of first surface 1112 to the inner diameter of seat ring 1108. In some examples, fourth surface 1118 is contiguous with fifth surface 1120. In some examples, second surface 1114 is contiguous with fourth surface 1118 at its inner diameter (e.g., seat ring 1108 does not include third surface 1116).

[0054] exist Figure 11 In the example shown, first surface 1112 and second surface 1114 are inclined relative to axis 128, along which valve plug 1104 translates during operation. In some examples, third surface 1116 and fifth surface 1120 are substantially parallel to axis 128. In some examples, at least a portion of fourth surface 1118 is substantially perpendicular to axis 128.

[0055] exist Figure 11 In the example shown, when the valve plug 1104 is in the closed position 1106, the first surface 1112 contacts the seat 1102. Figure 2 When the valve plug 1104 is in the open position 200 (e.g., the open position 200), the fluid contacts and flows through the first surface 1112. The fourth surface 1118 and the fifth surface 1120 contact the disc retainer 1106. In this example, the fourth surface 1118 includes the raised portion 434, and the disc retainer 1106 includes the protrusion 436, as described above. In some other examples, the valve plug 1104 includes an O-ring positioned between at least a portion of the fourth surface 1118 and the disc retainer 1106. The second surface 1114 and the third surface 1116 contact the disc cover 1110, as discussed in further detail below.

[0056] exist Figure 11 In the example shown, the disk cover 1110 includes a seventh surface 1124 (eg, a seventh side, Figure 4 The eighth surface 1126 is adjacent to the seventh surface 1124 and the ninth surface 1128. Figure 11 In the example shown, the seventh surface 1124 and the eighth surface 1126 are inclined relative to the axis 128. The seventh surface 1124 is flush with the first surface 1112 (e.g., adjacent to and along the same geometric plane as the first surface 1112 (e.g., geometric plane 424 ( Figure 4 )) Positioning). The ninth surface 1128 is substantially parallel to the axis 128.

[0057] exist Figure 11 In the example shown, eighth surface 1126 contacts second surface 1114, and ninth surface 1128 contacts third surface 1116. Eighth surface 1126 applies a preload compressive force to second surface 1114 in a direction perpendicular to second surface 1114 (e.g., in a direction oblique to axis 128). Thus, disc cover 1110 applies a preload compressive force to a surface (e.g., second surface 1114) adjacent to a surface (e.g., first surface 1112) contacting seat 1102, thereby increasing the contact area over which the preload is applied. Consequently, seat ring 1108 receives preload over the increased distance between its inner and outer diameters, which increases the received preload force and the pressure that seat ring 1108 can withstand during operation. Furthermore, as the second surface 1114 spans from the end of the first surface 1112 to the inner diameter of the seat ring 1104 , preload is applied in the same direction from the end of the first surface 1112 and the inner diameter of the seat ring 1104 to increase the uniformity of preload of the seat ring 1108 .

[0058] Figure 12 A portion of another example valve 1200 is shown, which includes a seat 1202 (e.g., seat 114 ( Figure 1-Figure 4 )、Seat 814( Figure 8 )) and the valve plug 1204 in the closed position 1206. The valve plug 1204 includes another example seat ring 1208 and another example disc cover 1210. The seat ring 1208 includes a first surface 1212 (e.g., a first face, a first bevel surface, Figure 4 a first surface 402 of the first surface 402), a second surface 1214 (eg, a second face, a second bevel surface, Figure 4 The second surface 404), the third surface 1216 (eg, the third side, Figure 4 The third surface 406 of the embodiment of the present invention is provided, the fourth surface 1218 (eg, the fourth surface), the fifth surface 1220 (eg, the fifth surface, the third inclined surface) and the sixth surface 1222 (eg, the sixth surface). Figure 12 In the example shown, first surface 1212 is contiguous with second surface 1214 and sixth surface 1222, and second surface 1214 is contiguous with third surface 1216. In some examples, fourth surface 1218 is contiguous with third surface 1216 and / or fifth surface 1220. In some examples, fifth surface 1220 is contiguous with sixth surface 1222.

[0059] exist Figure 12In the example shown, first surface 1212, second surface 1214, and fifth surface 1220 are inclined relative to axis 128, along which valve plug 1204 translates. In some examples, third surface 1216 is substantially perpendicular to axis 128. In some examples, fourth surface 1218 and sixth surface 1222 are substantially parallel to axis 128. In this example, fifth surface 1220 is oriented at an angle greater than 90° relative to sixth surface 1222.

[0060] exist Figure 12 In the example shown, when the valve plug 1204 is in the closed position 1206, the first surface 1212 contacts the seat 1202. Figure 2 When the disc is in the open position 200, the fluid contacts and flows through the first surface 1212. The second surface 1214, the third surface 1216, and the fourth surface 1218 are in contact with the disc cover 1210. The fifth surface 1220 and the sixth surface 1222 are in contact with the disc holder 1206.

[0061] exist Figure 12 In the illustrated example, disc retainer 1206 includes a seventh surface 1224 (e.g., a seventh face, a fourth beveled surface) and an eighth surface 1226 (e.g., an eighth face) adjacent to seventh surface 1224. Eighth surface 1226 is substantially parallel to axis 128 and contacts sixth surface 1222. Seventh surface 1224 is inclined relative to axis 128 and contacts fifth surface 1220. Specifically, seventh surface 1224 is oriented at an angle greater than 90° relative to eighth surface 1226. Due to the angular orientation of fifth and seventh surfaces 1220, 1224, the size (e.g., volume) of seat ring 1208 is increased, which can enable seat ring 1208 to withstand higher pressures. Furthermore, the angular orientation of fifth and seventh surfaces 1220, 1224 increases the contact area between them. This increased contact area can improve the seal between fifth and seventh surfaces 1220, 1224 and / or improve the pressure distribution within seat ring 1208 caused by preload, further preventing cracking of seat ring 1208. In some examples, fifth surface 1220 includes a raised portion (eg, raised portion 434 ( Figure 4 )), and the seventh surface 1224 includes a protrusion (e.g., protrusion 436 ( Figure 4 )). In this example, the raised portion and the protrusion extend in a direction perpendicular to the seventh surface 1224 and the fifth surface 1220. In some examples, the valve plug 1204 includes an O-ring (e.g., O-ring 818 ( Figure 8 )).

[0062] exist Figure 12In the example shown, the disk cover 1210 includes a ninth surface 1228 (eg, a ninth surface, a fifth bevel surface, Figure 4 The seventh surface 414), the tenth surface 1230 (eg, the tenth surface, the sixth bevel surface, Figure 4 The eighth surface 416), the eleventh surface 1232 (for example, the eleventh surface, Figure 4 1234 (e.g., the twelfth surface). Tenth surface 1230 is adjacent to ninth surface 1228 and eleventh surface 1232, and eleventh surface 1232 is adjacent to twelfth surface 1234. Ninth surface 1228 and tenth surface 1230 are inclined relative to axis 128. Eleventh surface 1232 is substantially perpendicular to axis 128. Twelfth surface 1234 is substantially parallel to axis 128.

[0063] exist Figure 12 In the example shown, the ninth surface 1228 is flush with the first surface 1212 (eg, adjacent to and along the same geometric plane as the first surface 1212 (eg, geometric plane 424 ( Figure 4 )) position). The tenth surface 1230 contacts the second surface 1214; the eleventh surface 1232 contacts the third surface 1216; and the twelfth surface contacts the fourth surface 1218. The tenth surface 1230 applies a first preload force to the second surface 1214, and the eleventh surface 1232 applies a second preload force to the third surface 1216 to improve the seal provided by the seat ring 1208 in the closed position 1206 and maintain its structural integrity against high pressures, as discussed in further detail above.

[0064] "Include" and "comprising" (and all forms and tenses thereof) are used herein as open-ended terms. Thus, whenever a claim employs any form of "include" or "comprising" (e.g., includes, comprises, includes, contains, having, etc.) as a preamble or within any kind of claim recitation, it should be understood that additional elements, terms, etc. may be present without falling outside the scope of the corresponding claim or recitation. As used herein, when the phrase "at least" is used as a transition term, such as in the preamble of a claim, it is open-ended in the same manner that the terms "include" and "comprising" are open-ended. When used, for example, in a form such as A, B, and / or C, the term "and / or" refers to any combination or subset of A, B, C, such as (1) A alone, (2) B alone, (3) C alone, (4) A and B, (5) A and C, (6) B and C, or (7) A and B and C. As used herein in the context of describing structures, components, items, objects, and / or things, the phrase "at least one of A and B" is intended to refer to implementations that include any of (1) at least one A, (2) at least one B, or (3) at least one A and at least one B. Similarly, as used herein in the context of describing structures, components, items, objects, and / or things, the phrase "at least one of A or B" is intended to refer to implementations that include any of (1) at least one A, (2) at least one B, or (3) at least one A and at least one B. As used herein in the context of describing the execution or performance of a process, instruction, action, activity, etc., the phrase "at least one of A and B" is intended to refer to implementations that include any of (1) at least one A, (2) at least one B, or (3) at least one A and at least one B. Similarly, as used herein in the context of describing the execution or performance of a process, instruction, action, activity, etc., the phrase "at least one of A or B" is intended to refer to implementations that include any of (1) at least one A, (2) at least one B, or (3) at least one A and at least one B.

[0065] As used herein, singular references (e.g., "a," "an," "first," "second," etc.) do not exclude a plurality. As used herein, the term "a" or "an" object refers to one or more of the object. The terms "a" (or "an"), "one or more," and "at least one" are used interchangeably herein. Furthermore, although listed separately, multiple devices, elements, or actions may be implemented by, for example, the same entity or object. Additionally, although individual features may be included in different examples or claims, these features may be combined, and inclusion in different examples or claims does not mean that a combination of features is not feasible and / or disadvantageous.

[0066] As used herein, unless otherwise specified, the term "above" describes the relationship of two parts relative to the Earth. A first part is above a second part if the second part has at least one portion between the Earth and the first part. Similarly, as used herein, a first part is "below" a second part when the first part is closer to the Earth than the second part. As described above, a first part can be above or below a second part, have one or more of the following: another portion between them, no other portion between them, the first and second parts in contact, or the first and second parts not in direct contact with each other.

[0067] As used in this patent, stating that any part (e.g., a layer, film, region, area, or plate) is in any way on another part (e.g., is positioned on another part, is located on another part, is arranged on another part, or is formed on another part, etc.) indicates that the referenced part is in contact with the other part, or that the referenced part is above the other part with one or more intermediate parts located therebetween.

[0068] As used herein, unless otherwise specified, connection references (e.g., attached, coupled, connected, and joined) may include intermediate members between the elements referenced by the connection reference and / or relative movement between those elements. As such, connection references do not necessarily mean that two elements are directly connected and / or in a fixed relationship to each other. As used herein, the statement that any part is "in contact with" another part is defined to mean that there are no intermediate parts between the two parts.

[0069] Unless otherwise expressly stated, descriptors such as "first," "second," "third," etc., are used herein without implying or otherwise indicating any meaning of priority, physical order, arrangement in a list, and / or sorting, but are merely used as labels and / or arbitrary names to distinguish elements to facilitate understanding of the disclosed examples. In some examples, the descriptor "first" may be used to refer to an element in a specific embodiment, while the same element may be referred to by a different descriptor such as "second" or "third" in the claims. In such cases, it should be understood that such descriptors are only used to clearly identify those elements in the context of the discussion (e.g., in the claims), where the elements may, for example, share the same name in other ways.

[0070] As used herein, "approximately" and "about" modify the subject matter / value to recognize the potential for variations that occur in real-world applications. For example, as one of ordinary skill in the art will understand, "approximately" and "about" may modify dimensions that may not be exact due to manufacturing tolerances and / or other real-world imperfections. For example, "approximately" and "about" may indicate that such a dimension may be within a tolerance range of + / - 10%, unless otherwise indicated herein.

[0071] As used herein in the context of describing the position and / or orientation of a first object (e.g., a first surface, a first plane, a first axis, etc.) relative to a second object (e.g., a second surface, a second plane, a second axis, etc.), the term "substantially perpendicular" encompasses the term perpendicular, and more broadly encompasses the meaning that the first object is positioned and / or oriented relative to the second object at an absolute angle of no more than five degrees (5°) from the perpendicular. For example, a first axis that is substantially perpendicular to a second axis is positioned and / or oriented relative to the second axis at an absolute angle of no more than five degrees (5°) from the perpendicular.

[0072] As used herein in the context of describing the position and / or orientation of a first object (e.g., a first surface, a first plane, a first axis, etc.) relative to a second object (e.g., a second surface, a second plane, a second axis, etc.), the term "substantially parallel" encompasses the term parallel, and more broadly encompasses a meaning in which the first object is positioned and / or oriented relative to the second object at an absolute angle that differs from parallel by no more than five degrees (5°). For example, a first axis that is substantially parallel to a second axis is positioned and / or oriented relative to the second axis at an absolute angle that differs from parallel by no more than five degrees (5°).

[0073] From the foregoing, it can be appreciated that there have been disclosed example systems, apparatus, articles, and methods for increasing the pressure at which a valve plug maintains sealing capabilities while maintaining a flush flow path boundary to avoid undesirable flow characteristics in a valve.

[0074] This document discloses exemplary valve sealing structures. Other examples and combinations thereof include the following:

[0075] Example 1 includes an apparatus comprising: a valve body including a seat; and a valve plug including a disc retainer including a recess; a seat ring located in the recess, the seat ring including a first surface and a second surface adjacent to the first surface, the first surface for contacting the seat when the valve plug is in a closed position; and a disc cover coupled to the disc retainer, the disc cover including a third surface and a fourth surface adjacent to the third surface, the third surface for being flush with the first surface, the fourth surface for contacting the second surface and applying an axial preload force to the seat ring.

[0076] Example 2 includes an apparatus according to Example 1, wherein the axial preload force is a first axial preload force in a first direction, wherein the seat ring includes a fifth surface, and wherein the disc cover includes a sixth surface, wherein the sixth surface contacts the fifth surface to apply a second axial preload force to the seat ring in a second direction different from the first direction.

[0077] Example 3 includes the device of Example 2, wherein the fifth surface is adjacent to the second surface, and wherein the sixth surface is adjacent to the fourth surface.

[0078] Example 4 includes the apparatus of Example 1, wherein the seat ring includes a fifth surface that contacts the disc retainer, and wherein the fifth surface includes a raised portion.

[0079] Example 5 includes the apparatus of Example 4, wherein the raised portion is a first serration, and wherein the disk holder includes a second serration that engages the first serration.

[0080] Example 6 includes the apparatus of Example 4, wherein the raised portions are concentric serrations.

[0081] Example 7 includes the apparatus of Example 1, wherein the second surface comprises a slope that is non-parallel to a longitudinal axis of the valve plug.

[0082] Example 8 includes the apparatus of Example 1, wherein the second surface comprises a sloped surface that is inclined relative to a longitudinal axis of the valve plug.

[0083] Example 9 includes an apparatus comprising: a valve body including an inner wall defining a seat positioned about an orifice; a disc retainer; a disc cover coupled to the disc retainer, the disc cover including a first surface and a second surface adjacent to the first surface, the first surface at least partially facing the inner wall; and a seat ring positioned between the disc cover and the disc retainer, the seat ring including a third surface and a fourth surface adjacent to the third surface, the third surface for contacting the second surface, the third surface including an angular orientation that is not perpendicular to a plane defined by the orifice, the fourth surface being flush with the first surface.

[0084] Example 10 includes the apparatus of Example 9, wherein the seat ring, disc retainer, and disc cover are movable between a first position in which the fourth surface contacts the seat to prevent fluid from flowing between the seat and the seat ring, and a second position in which the fourth surface is separated from the seat.

[0085] Example 11 includes the apparatus of Example 9, wherein at least a portion of the second surface faces the disc holder.

[0086] Example 12 includes the apparatus of Example 9, wherein the angular orientation of the third surface is non-parallel to a plane defined by the aperture.

[0087] Example 13 includes the apparatus of Example 9, wherein the seat ring includes a fifth surface, wherein the disc cover includes a sixth surface contacting the fifth surface, wherein the disc cover compresses the seat ring with a first force on the fifth surface and a second force on the third surface.

[0088] Example 14 includes the apparatus of Example 13, wherein the fifth surface and the sixth surface are substantially parallel to a plane defined by the orifice.

[0089] Example 15 includes the device of Example 14, wherein the fifth surface is adjacent to the third surface, and wherein the sixth surface is adjacent to the second surface.

[0090] Example 16 includes the apparatus of Example 13, wherein the first force is approximately perpendicular to the third surface and the second force is approximately perpendicular to the fifth surface.

[0091] Example 17 includes the apparatus of Example 13, wherein the tray cover includes threads for coupling the tray cover to the tray holder, and wherein the threads are capable of converting rotation of the tray cover into linear motion applying the first force and the second force.

[0092] Example 18 includes the apparatus of Example 9, wherein the seat ring includes a fifth surface that contacts the disc retainer, and wherein the fifth surface includes the recess.

[0093] Example 19 includes the apparatus of Example 18, wherein the disc holder includes a protrusion extending into the cavity defined by the recess.

[0094] Example 20 includes a device comprising a seat ring comprising a first face, a second face, and a third face, the first face and the third face being adjacent to the second face, the first face being for contacting a disc retainer, the third face being for contacting a disc cover, the second face being flush with a surface of the disc cover, the seat ring being movable along an axis between a first position and a second position, the second face being for contacting a periphery of an orifice when the seat ring is in the first position, the second face comprising a first inclined face that is not parallel to the axis, and the third face comprising a second inclined face that is not parallel to the axis.

[0095] The appended claims are incorporated by reference into this detailed description. Although certain example systems, devices, articles, and methods have been disclosed herein, the scope of coverage of this patent is not limited thereto. Rather, this patent covers all systems, devices, articles, and methods that fully fall within the scope of the claims of this patent.

Claims

1. A device, characterized in that include: a valve body, the valve body including a seat; as well as Valve plug, including: a disc holder, the disc holder comprising a recess; a seat ring positioned in the recess, the seat ring including a first surface and a second surface adjacent to the first surface, the first surface being configured to contact the seat when the valve plug is in the closed position; and A disc cover is coupled to the disc holder, the disc cover comprising a third surface and a fourth surface adjacent to the third surface, the third surface being configured to be flush with the first surface, the fourth surface being configured to contact the second surface and apply an axial preload force to the seat ring.

2. The device according to claim 1, characterized in that The axial preload force is a first axial preload force in a first direction, wherein the seat ring includes a fifth surface, and wherein the disc cover includes a sixth surface, wherein the sixth surface contacts the fifth surface to apply a second axial preload force to the seat ring in a second direction different from the first direction.

3. The device according to claim 2, characterized in that The fifth surface is adjacent to the second surface, and wherein the sixth surface is adjacent to the fourth surface.

4. The device according to claim 1, characterized in that The seat ring includes a fifth surface that contacts the disc retainer, and wherein the fifth surface includes a raised portion.

5. The device according to claim 4, characterized in that The raised portion is a first serration, and wherein the disc retainer includes a second serration that engages with the first serration.

6. The device according to claim 4, characterized in that The raised portions are concentric serrations.

7. The device according to claim 1, characterized in that The second surface includes an inclined surface that is non-parallel to a longitudinal axis of the valve plug.

8. The device according to claim 1, characterized in that The second surface includes a sloped surface that is inclined relative to a longitudinal axis of the valve plug.

9. A device, characterized in that include: a valve body including an inner wall defining a seat positioned about the orifice; disc holder; a tray cover coupled to the tray holder, the tray cover comprising a first surface and a second surface adjacent to the first surface, the first surface at least partially facing the inner wall; as well as A seat ring is positioned between the disc cover and the disc retainer, the seat ring including a third surface and a fourth surface adjacent to the third surface, the third surface being configured to contact the second surface, the third surface including an angular orientation that is not perpendicular to a plane defined by the orifice, the fourth surface being flush with the first surface.

10. The device according to claim 9, characterized in that The seat ring, the disc retainer, and the disc cover are movable between a first position in which the fourth surface contacts the seat to prevent fluid from flowing between the seat and the seat ring, and a second position in which the fourth surface is separated from the seat.

11. The device according to claim 9, characterized in that At least a portion of the second surface faces the disc holder.

12. The device according to claim 9, characterized in that The angular orientation of the third surface is non-parallel to the plane defined by the aperture.

13. The device according to claim 9, characterized in that The seat ring includes a fifth surface, wherein the disk cover includes a sixth surface contacting the fifth surface, wherein the disk cover compresses the seat ring with a first force on the fifth surface and a second force on the third surface.

14. The device according to claim 13, characterized in that The fifth surface and the sixth surface are substantially parallel to the plane defined by the orifice.

15. The device according to claim 14, characterized in that The fifth surface is adjacent to the third surface, and wherein the sixth surface is adjacent to the second surface.

16. The device according to claim 13, characterized in that The first force is approximately perpendicular to the third surface, and the second force is approximately perpendicular to the fifth surface.

17. The device according to claim 13, characterized in that The disc cover includes threads coupling the disc cover to the disc holder, and wherein the threads are capable of converting rotation of the disc cover into linear motion applying the first force and the second force.

18. The device according to claim 9, characterized in that The seat ring includes a fifth surface that contacts the disc retainer, and wherein the fifth surface includes a recess.

19. The device according to claim 18, characterized in that The disc holder includes a protrusion extending into a cavity defined by the recess.

20. A device, characterized in that include: A seat ring comprises a first face, a second face and a third face, wherein the first face and the third face are adjacent to the second face, the first face is used to contact a disc holder, the third face is used to contact a disc cover, and the second face is flush with the surface of the disc cover. The seat ring is movable along an axis between a first position and a second position. When the seat ring is in the first position, the second face is used to contact the periphery of the orifice, the second face comprises a first inclined face that is not parallel to the axis, and the third face comprises a second inclined face that is not parallel to the axis.

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