Emergency shut-off safety device for fluid regulators

Abstract

An emergency shut-off mechanism is disclosed for operatively connecting an emergency shut-off control element of a fluid regulator to a controller for the control element. The mechanism includes a shaft and a cam, the cam being supported by a bearing and having a cam surface adapted for operative connection to the emergency shut-off control element. The mechanism also includes a latch pin supported by the bearing, a latch, and a lever operatively connected to the latch and adapted for selective engagement by the controller. When the controller engages the lever, the latch is movable from a first position to a second position, in which the latch securely holds the latch pin such that the cam surface is arranged to hold the emergency shut-off control element in a fully open position, and in the second position, the latch pin is released from the latch, thereby allowing the emergency shut-off control element to move from the fully open position to a closed position.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to European application 22465525.8, filed on 1 April 2022, entitled “Slam-Shut Safety Devices for a Fluid Regulator,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates in general to emergency shut-off safety devices, and more specifically to emergency shut-off safety devices for use with fluid regulators. Background Technology

[0004] The pressure of the fluid supplied by a typical fluid distribution system can vary depending on the demands placed on the system, climate, supply source, and / or other factors. However, most end-user facilities equipped with gas appliances (such as furnaces, ovens, etc.) require gas to be delivered at a predetermined pressure and at a level equal to or below the maximum capacity of the gas regulator. Therefore, fluid regulators are implemented in these distribution systems to ensure that the delivered gas meets the requirements of the end-user facility.

[0005] Fluid regulators (such as Tartarini) TM M-series pressure regulators are primarily designed for industrial and commercial applications supplying fluids (such as natural gas and propane) to furnaces, burners, and other appliances, and are generally well-known in the art. Fluid regulators are typically used to regulate the pressure of a supply fluid to a substantially constant value. Specifically, a fluid regulator has an inlet that typically receives the supply fluid at a relatively high pressure and provides a relatively low and substantially constant pressure at an outlet. To regulate downstream pressure, fluid regulators typically include a sensing element (e.g., a diaphragm) to sense the outlet pressure in fluid communication with the downstream pressure.

[0006] Fluid regulators may also include emergency shut-off devices (such as those that provide a safe stop when needed) to provide a safe stop. The OS / 66 series emergency shut-off device provides a safety stop in response to overpressure conditions (i.e., when the downstream pressure exceeds the maximum downstream pressure threshold) and / or underpressure conditions (i.e., when the downstream pressure is less than the minimum downstream pressure threshold). When the downstream pressure is at normal operating values, the emergency shut-off device remains open (i.e., no safety stop is provided). However, when the downstream pressure changes beyond its set limits, the emergency shut-off device closes and prevents fluid flow through the fluid regulator. One issue with typical emergency shut-off devices is the location of the integrated emergency shut-off device within the fluid regulator. A typical integrated emergency shut-off device is accessible from one side of the fluid regulator body between the input and output ends. Depending on the field installation and / or sliding design, the user may not be able to access the side of the fluid regulator where the emergency shut-off device is located, which can significantly complicate normal line startup, maintenance, and / or troubleshooting. Summary of the Invention

[0007] One aspect of this disclosure includes an emergency shut-off mechanism for operatively connecting an emergency shut-off control element of a fluid regulator to a controller for the emergency shut-off control element. The emergency shut-off mechanism includes: a shaft; and a cam carried by the shaft, the cam having a cam surface adapted for operative connection to the emergency shut-off control element. The emergency shut-off mechanism also includes a latch pin carried by the shaft, a latch, and a lever operatively connected to the latch, the lever being adapted for selective engagement by the controller. In response to the controller engaging the lever, the latch is movable from a first position to a second position, in which the latch securely holds the latch pin such that the cam surface is arranged to hold the emergency shut-off control element in a fully open position, and in the second position, the latch pin is released from the latch, thereby allowing the emergency shut-off control element to move from the fully open position to a closed position.

[0008] Another aspect of this disclosure includes an emergency shut-off mechanism for operatively connecting an emergency shut-off control element of a fluid regulator to a controller for the emergency shut-off control element. The emergency shut-off mechanism includes a housing adapted to be coupled to a regulator body of the fluid regulator. The emergency shut-off mechanism further includes: a shaft extending through an opening formed in the housing; and a cam carried by the shaft at a location outside the housing, the cam adapted to be operatively coupled to the emergency shut-off control element. The emergency shut-off mechanism further includes: a latch pin carried by the bearing; a latch pivotally coupled to the housing; and a lever pivotally coupled to the housing and operatively coupled to the latch, the lever adapted to be selectively engaged by the controller. In response to the controller engaging the lever, the latch is movable from a first position to a second position, in which the latch securely holds the latch pin such that the cam surface is arranged to hold the emergency shut-off control element in a fully open position, and in the second position, the latch pin is released from the latch, thereby allowing the emergency shut-off control element to be moved from the fully open position to a closed position.

[0009] Another aspect of this disclosure includes a fluid regulator. The fluid regulator includes a regulator body having an inlet, an outlet, and a flow path extending between the inlet and the outlet, the regulator body including a seat surrounding an orifice in the flow path. The fluid regulator includes an emergency shut-off control element disposed within the regulator body and movable between a fully open position and a closed position, in which the emergency shut-off control element is spaced apart from the seat, and in which the emergency shut-off control element is positioned against the seat in a closed position. The fluid regulator also includes a controller for moving the emergency shut-off control element between the fully open and closed positions, the controller being coupled to a first portion of the regulator body. The fluid regulator includes an emergency shut-off mechanism for operatively connecting the emergency shut-off control element to the controller. The emergency shut-off mechanism includes: a shaft; and a cam carried by the shaft, the cam having a cam surface adapted for operative connection to the emergency shut-off control element. The emergency shut-off mechanism also includes a latch pin carried by the shaft, a latch, and a lever operatively connected to the latch, the lever being configured to be selectively engaged by the controller. In response to the controller engaging the lever, the latch can move from a first position to a second position, in which the latch securely holds the latch pin such that the cam surface is arranged to hold the emergency cut-off control element in the fully open position, and in the second position, the latch pin is released from the latch. The movement of the latch from the first position to the second position allows the emergency cut-off control element to move from the fully open position to the closed position.

[0010] Another aspect of this disclosure includes an emergency cut-off mechanism for operatively connecting an emergency cut-off control element of a fluid regulator to a controller for the emergency cut-off control element. The emergency cut-off mechanism includes: a shaft; and a cam carried by the shaft, the cam having a cam surface adapted for operative connection to the emergency cut-off control element. The emergency cut-off mechanism includes a first emergency cut-off assembly and a second emergency cut-off assembly linked to the first emergency cut-off assembly. The first emergency cut-off assembly includes a first latching pin, a first latch, and a first lever operatively connected to the first latch, the first lever being adapted for selective engagement by the controller. The second emergency cut-off assembly includes a second latching pin, a second latch, and a second lever operatively connected to the second latch, the second lever being adapted for selective engagement by the controller. In response to the controller engaging the first lever, the first latch can move from a first position to a second position. In the first position, the first latch securely holds the first latch pin such that the cam surface is arranged to hold the emergency cut-off control element in the fully open position. In the second position, the first latch pin is released from the first latch, thereby allowing the emergency cut-off control element to move from the fully open position to the closed position. The movement of the first latch from the first position to the second position causes the second latch to move from a third position to a fourth position. In the third position, the second latch securely holds the second latch pin. In the fourth position, the second latch pin is released from the second latch.

[0011] Another aspect of this disclosure includes an emergency cut-off mechanism for operatively connecting an emergency cut-off control element of a fluid regulator to a controller for the emergency cut-off control element. The emergency cut-off mechanism includes: a housing; a shaft extending through an opening formed in the housing; and a cam carried by the bearing, the cam having a cam surface adapted for operative connection to the emergency cut-off control element. The emergency cut-off mechanism includes: a first emergency cut-off assembly coupled to a first portion of the housing; and a second emergency cut-off assembly coupled to a second portion of the housing and linked to the first emergency cut-off assembly. The first emergency cut-off assembly includes a first latching pin, a first latch, and a first lever operatively connected to the first latch, the first lever being adapted for selective engagement by the controller. The second emergency cut-off assembly includes a second latching pin, a second latch, and a second lever operatively connected to the second latch, the second lever being adapted for selective engagement by the controller. In response to the controller engaging the first lever or the second lever, the first latch can move from a first position to a second position. In the first position, the first latch securely holds the first latch pin such that the cam surface is arranged to hold the emergency cut-off control element in the fully open position. In the second position, the first latch pin is released from the first latch, thereby allowing the emergency cut-off control element to move from the fully open position to the closed position. The movement of the first latch from the first position to the second position causes the second latch to move from a third position to a fourth position. In the third position, the second latch securely holds the second latch pin. In the fourth position, the second latch pin is released from the second latch.

[0012] Another aspect of this disclosure includes a fluid regulator. The fluid regulator includes a regulator body having an inlet, an outlet, and a flow path extending between the inlet and the outlet, the regulator body including a seat surrounding an orifice in the flow path. The fluid regulator includes an emergency shut-off control element disposed within the regulator body and movable between a fully open position and a closed position, in which the emergency shut-off control element is spaced apart from the seat, and in which the emergency shut-off control element is positioned against the seat in a closed position. The fluid regulator also includes a controller for moving the emergency shut-off control element between the fully open and closed positions, the controller being coupled to a first portion of the regulator body. The fluid regulator also includes an emergency shut-off mechanism for operatively connecting the emergency shut-off control element of the fluid regulator to the controller. The emergency shut-off mechanism includes: a shaft; and a cam carried by the shaft, the cam having a cam surface adapted for operative connection to the emergency shut-off control element. The emergency shut-off mechanism includes a first emergency shut-off assembly and a second emergency shut-off assembly linked to the first emergency shut-off assembly. The first emergency cut-off assembly includes a first latching pin, a first latch, and a first lever operably connected to the first latch, the first lever being adapted to be selectively engaged by the controller. The second emergency cut-off assembly includes a second latching pin, a second latch, and a second lever operably connected to the second latch, the second lever being adapted to be selectively engaged by the controller. In response to the controller engaging the first lever, the first latch is movable from a first position to a second position, in which the first latch securely holds the first latching pin such that the cam surface is arranged to hold the emergency cut-off control element in a fully open position, and in the second position, the first latching pin is released from the first latch, thereby allowing the emergency cut-off control element to move from the fully open position to a closed position. The movement of the first latch from the first position to the second position causes the second latch to move from a third position to a fourth position, in which the second latch securely holds the second latching pin, and in the fourth position, the second latching pin is released from the second latch. The controller is removable from the first part of the regulator body and can be coupled to the second part of the regulator body, and when the controller is coupled to the second part of the regulator body, the controller is configured to selectively engage the second lever.

[0013] Another aspect of this disclosure includes a cam and shaft assembly for a fluid regulator. The cam and shaft assembly is adjustable based on the dimensions of the fluid regulator. The cam and shaft assembly includes: a shaft; and a cam coupled to the shaft, the cam having a cam surface adapted for operative connection to a control element of the fluid regulator. The cam is reconfigurable relative to the shaft to adjust the angle between the cam surface and the lateral axis of the shaft.

[0014] Another aspect of this disclosure includes a cam and shaft assembly for a fluid regulator. The cam and shaft assembly is adjustable based on the dimensions of the fluid regulator. The cam and shaft assembly includes: a shaft; and a cam coupled to the shaft, the cam having a cam surface adapted for operative connection to a control element of the fluid regulator. The shaft has a first hole corresponding to a first position of the cam surface relative to the shaft, and a second hole corresponding to a second position of the cam surface relative to the shaft. The cam and shaft assembly also includes a fastener removably disposed in the first hole or the second hole to engage the cam to the shaft such that the cam surface is in the first position or the second position, respectively.

[0015] Any of the foregoing aspects of this disclosure may include any or more of the following preferred forms.

[0016] In a preferred embodiment, the latch pin has a first contact surface, and the latch has a second contact surface configured to engage the first contact surface when the latch is in the first position, wherein the second contact surface is oriented at an angle relative to the axis of the latch pin.

[0017] In another preferred embodiment, a second lever operatively connects the lever and the latch, wherein the second lever is configured to pivot together with the lever. The second lever may include a pin that engages an inclined surface of the latch when the latch moves from the first position to the second position.

[0018] In another preferred embodiment, the spring is configured to apply a compressive force to the latch, wherein the spring is adjustable to adjust the compressive force applied to the latch.

[0019] In another preferred embodiment, the movement of the latch from the first position to the second position allows the shaft to rotate to a closed position in a first direction, and when the shaft is in the closed position, rotation of the shaft in a second direction opposite to the first direction causes the latch to move from the second position to the first position. Rotation of the shaft in the second direction causes the latch pin to engage a first apex of the lever, and engagement of the latch pin with the first apex causes a second apex of the lever to rotate into engagement with the controller, thereby moving the latch to the first position.

[0020] In another preferred embodiment, the cam can be reconfigured relative to the shaft to adjust the angle between the cam surface and the lateral axis of the shaft.

[0021] In another preferred embodiment, the controller can be removed from the first part of the regulator body and can be coupled to the second part of the regulator body.

[0022] In another preferred embodiment, a first flange is mounted to the regulator body, and a second flange is mounted to the emergency cut-off mechanism, wherein the second flange is configured to engage the first flange to connect the emergency cut-off mechanism to the regulator body.

[0023] In another preferred embodiment, the emergency cut-off mechanism is slidable relative to the regulator body, such that the emergency cut-off control element can be removed from the regulator body without being disturbed by the emergency cut-off mechanism.

[0024] In another preferred embodiment, the fluid regulator includes: a spring seat; and a spring disposed between the emergency cut-off control element and the spring seat, the spring being configured to bias the emergency cut-off control element away from the spring seat, wherein the cam surface engages the spring seat when the emergency cut-off control element moves from the fully open position to the closed position.

[0025] In another preferred embodiment, the first latch pin has a first contact surface, and the first latch has a second contact surface configured to engage the first contact surface when the first emergency cut-off mechanism is in the first position, wherein the second contact surface is oriented at an angle relative to the axis of the first latch pin.

[0026] In another preferred embodiment, the first emergency cut-off assembly further includes a third lever operatively connecting the first lever and the first latch, wherein the third lever is configured to pivot together with the first lever. The third lever may include a pin that engages an inclined surface of the first latch when the first latch moves from the first position to the second position.

[0027] In another preferred embodiment, the spring is configured to apply a compressive force to the first latch or the second latch, wherein the spring is adjustable to adjust the compressive force applied to the first latch or the second latch.

[0028] In another preferred embodiment, the movement of the first latch from the first position to the second position allows the shaft to rotate to a closed position in a first direction, and when the shaft is in the closed position, rotation of the shaft in a second direction opposite to the first direction causes the first latch to move from the second position to the first position and the second latch to move from the fourth position to the third position. Rotation of the shaft in the second direction causes the first latch pin to engage the first apex of the first lever, and engagement of the first latch pin with the first apex causes the second apex of the first lever to rotate into engagement with the controller, thereby moving the first latch to the first position.

[0029] In another preferred embodiment, the linkage connects the second emergency cut-off assembly to the first emergency cut-off assembly, wherein the linkage connects both the first lever and the second lever.

[0030] In another preferred embodiment, the cam can be rotated relative to the shaft to adjust the angle between the cam surface and the lateral axis of the shaft.

[0031] In another preferred embodiment, the cam is coupled to the end of the shaft.

[0032] In another preferred embodiment, the cam includes an opening sized to receive the end of the shaft.

[0033] In another preferred embodiment, fasteners are disposed in holes formed in the shaft to attach the cam to the shaft.

[0034] In another preferred embodiment, the cam can be reconfigured between a first position relative to the axis and a second position relative to the axis.

[0035] In another preferred embodiment, the cam can also be reconfigured relative to the shaft between a first position, a second position, and a third position.

[0036] In another preferred embodiment, a first hole and a second hole are formed in the end of the shaft, such that the cam is engaged with the end of the shaft.

[0037] In another preferred embodiment, the cam includes a first cut and a second cut adjacent to the opening, the first cut and the second cut corresponding to the first position and the second position, respectively.

[0038] In another preferred embodiment, the fastener is removably disposed in the first hole and the first notch to engage the cam to the shaft such that the cam surface is in the first position, and the fastener is removably disposed in the second hole and the second notch to engage the cam to the shaft such that the cam surface is in the second position. When the cam surface is in the first position, the first hole is alignable with the first notch and the second hole is at least partially misalignable with the second notch; and when the cam surface is in the second position, the second hole is alignable with the second notch and the first hole is at least partially misalignable with the first notch.

[0039] In another preferred embodiment, when the cam surface is in the first position, the cam surface is oriented at a first angle relative to the transverse axis of the shaft, and when the cam surface is in the second position, the cam surface is oriented at a second angle relative to the transverse axis of the shaft.

[0040] Additional optional aspects, arrangements, examples, and features are disclosed, which can be arranged in any functionally appropriate manner (alone or in any functionally feasible combination) consistent with the teachings of this disclosure. Other aspects and advantages will become apparent upon consideration of the following detailed description. Attached Figure Description

[0041] Figure 1 This is a perspective view of an example fluid regulator constructed in accordance with the teachings of this disclosure, which includes an emergency shut-off safety device;

[0042] Figure 2 yes Figure 1 A cross-sectional view of a portion of the fluid regulator;

[0043] Figure 3A yes Figure 1 A cross-sectional view of the fluid regulator, with the controller of the fluid regulator removed for clarity;

[0044] Figure 3B yes Figure 3A A close-up image of a portion of the fluid regulator, showing the internal components of the emergency shut-off assembly;

[0045] Figure 4 yes Figure 1 A close-up image of a portion of the fluid regulator, showing internal parts of the emergency shut-off assembly in the fully open position;

[0046] Figure 5 Is Figures 1 to 4 A plan view of the external emergency shut-off mechanism used in the fluid regulator;

[0047] Figure 6 yes Figure 5 A plan view of the latch of the emergency shut-off mechanism;

[0048] Figure 7 yes Figure 5 A perspective view of the emergency shut-off mechanism;

[0049] Figure 8 yes Figure 7 A close-up image of a portion;

[0050] Figure 9 yes Figures 1 to 4 A perspective view of the controller of the fluid regulator;

[0051] Figure 10 yes Figure 9 A cross-sectional view of the controller;

[0052] Figure 11A Examples are given when Figure 9 and Figure 10When the controller is in the untouched position Figures 5 to 8 Components of the emergency shut-off mechanism;

[0053] Figure 11B Examples Figure 11A Some components of the emergency shut-off mechanism;

[0054] Figure 12 Similar to Figure 11A However, it shows a movement from the first position to the second position in response to the controller being in the actuated position. Figures 5 to 8 Components of the emergency shut-off mechanism;

[0055] Figure 13A Similar to Figure 12 However, it shows the second position. Figures 5 to 8 Components of the emergency shut-off mechanism;

[0056] Figure 13B Similar to Figure 11B However, it shows the second position. Figures 5 to 8 Components of the emergency shut-off mechanism;

[0057] Figure 14 Similar to Figure 13A However, it shows the movement from the second position back to the first position. Figures 5 to 8 Components of the emergency shut-off mechanism;

[0058] Figure 15 Similar to Figure 14 However, it shows different points during the process of moving from the second position back to the first position. Figures 5 to 8 Components of the emergency shut-off mechanism;

[0059] Figure 16 This is a plan view of another example of an emergency cut-off mechanism constructed in accordance with the teachings of this disclosure;

[0060] Figure 17 This is a plan view of another example of an emergency cut-off mechanism constructed in accordance with the teachings of this disclosure;

[0061] Figure 18 yes Figure 17 Perspective view;

[0062] Figure 19 When removed from the housing of the emergency cut-off mechanism Figures 17 to 18 A perspective view of the components of the emergency cut-off mechanism;

[0063] Figure 20 Examples are shown that can be used for linking. Figures 17 to 19 The emergency cutting mechanism consists of multiple gear teeth;

[0064] Figure 21AAn example is illustrated when the controller pushes against the first emergency shut-off component of the emergency shut-off mechanism. Figures 17 to 20 Components of the emergency shut-off mechanism;

[0065] Figure 21B yes Figure 21A A close-up image of a portion;

[0066] Figure 21C It is in response to the controller push Figure 21A A close-up view of multiple gear teeth moving in the first emergency cut-off assembly of the emergency cut-off mechanism.

[0067] Figure 22A An example is illustrated when the controller pushes against the second emergency shut-off component of the emergency shut-off mechanism. Figures 17 to 20 Components of the emergency shut-off mechanism;

[0068] Figure 22B yes Figure 22A A close-up image of a portion;

[0069] Figure 22C It is in response to the controller push Figure 22A A close-up view of multiple gear teeth moving in the second emergency cut-off assembly of the emergency cut-off mechanism;

[0070] Figure 23A An example is shown when the controller pulls the first emergency cut-off component of the emergency cut-off mechanism. Figures 17 to 20 Components of the emergency shut-off mechanism;

[0071] Figure 23B yes Figure 23A A close-up image of a portion;

[0072] Figure 23C It is in response to the controller pulling. Figure 23A A close-up view of multiple gear teeth moving in the first emergency cut-off assembly of the emergency cut-off mechanism.

[0073] Figure 24A An example is shown when the controller pulls the second emergency cut-off assembly of the emergency cut-off mechanism. Figures 17 to 20 Components of the emergency shut-off mechanism;

[0074] Figure 24B yes Figure 24A A close-up image of a portion;

[0075] Figure 24C It is in response to the controller pulling. Figure 24A A close-up view of multiple gear teeth moving in the second emergency cut-off assembly of the emergency cut-off mechanism;

[0076] Figure 25AThis is a perspective view as part of another example of an emergency cut-off mechanism constructed in accordance with the teachings of this disclosure;

[0077] Figure 25B Similar to Figure 25A However, it shows Figures 17 to 20 Part of the emergency shut-off mechanism;

[0078] Figure 26 This is a plan view of another example of an emergency cut-off mechanism constructed in accordance with the teachings of this disclosure;

[0079] Figure 27 yes Figure 26 Perspective view;

[0080] Figure 28A When removed from the housing of the emergency cut-off mechanism Figure 26 and Figure 27 A perspective view of the components of the emergency cut-off mechanism;

[0081] Figure 28B yes Figure 28A Rear view;

[0082] Figure 29 Examples Figures 1 to 4 The controller of the fluid regulator can be relative to Figures 1 to 4 The regulator body of the fluid regulator is placed in several different orientations;

[0083] Figure 30 This is a plan view of another example of an emergency cut-off mechanism constructed according to the teachings of this disclosure, which shows Figure 6 The orientation of the latch relative to the latch pin attached to the main shaft of the mechanism;

[0084] Figure 31 This is a plan view as part of another example of an emergency cut-off mechanism constructed according to the teachings of this disclosure, showing that... Figure 6 The latch is brought to the appropriate position by the spring of the emergency cut-off mechanism;

[0085] Figure 32 yes Figure 31 A close-up image of a portion;

[0086] Figure 33A It is replaceable Figure 3B A close-up image of a portion of another example of the internal emergency cut-off assembly used in the internal emergency cut-off assembly;

[0087] Figure 33B and Figure 33C Examples of the fully open position are shown. Figure 33A Internal emergency shut-off components;

[0088] Figure 34A This illustrates the lack of [something] when the internal emergency shut-off assembly is in the fully closed position. Figures 33A to 33C The engagement between the cam surface of the internal emergency cut-off assembly and the emergency cut-off spring seat;

[0089] Figure 34B and Figure 34C yes Figure 34A Close-up image;

[0090] Figure 35A This is a perspective view as part of another example of an emergency cut-off mechanism constructed in accordance with the teachings of this disclosure;

[0091] Figure 35B Examples Figure 35A The shaft of the emergency cutting mechanism;

[0092] Figure 35C Examples Figure 35A The cam of the emergency cut-off mechanism;

[0093] Figure 36 An example is shown when the emergency shut-off mechanism is not activated. Figure 35C The engagement between the cam surface of the cam and the components of the emergency cutting mechanism;

[0094] Figure 37 Similar to Figure 36 However, it shows the engagement when the emergency cut-off mechanism is triggered;

[0095] Figure 38A This is a perspective view as part of another example of an emergency cut-off mechanism constructed in accordance with the teachings of this disclosure;

[0096] Figure 38B Similar to Figure 38A However, for illustrative purposes, some components have been removed;

[0097] Figure 39A An example is shown when the emergency shut-off mechanism is not activated. Figure 38A and Figure 38B The engagement between the cam surface of the cam and the components of the emergency cutting mechanism;

[0098] Figure 39B yes Figure 39A Close-up image;

[0099] Figure 39C Similar to Figure 39A However, it shows the engagement when the emergency cut-off mechanism is triggered;

[0100] Figure 39D yes Figure 39C Close-up image;

[0101] Figure 40Examples are shown that can be used to... Figures 5 to 8 The emergency shut-off mechanism is connected to Figures 1 to 4 A single flange of the regulator body of the fluid regulator;

[0102] Figure 41 Examples are illustrated in which the teachings of this disclosure are constructed and can be used to... Figures 5 to 8 The emergency shut-off mechanism is connected to Figures 1 to 4 The first flange of the flange assembly of the regulator body of the fluid regulator;

[0103] Figure 42 Examples Figure 41 The second flange of the flange assembly;

[0104] Figure 43 An example is shown that is connected to the regulator body. Figure 41 The first flange of the flange assembly;

[0105] Figure 44 It is connected to the main body of the regulator. Figure 41 Front view of the first flange of the flange assembly;

[0106] Figure 45 yes Figure 44 Rear view;

[0107] Figure 46 An example is shown that is connected to the emergency shut-off mechanism. Figure 41 The second flange of the flange assembly;

[0108] Figures 47 to 52 Examples of using Figures 41 to 46 The process of connecting the emergency cut-off mechanism to the regulator body via the flange assembly;

[0109] Figure 53 This is a cross-sectional view as part of another example of an emergency shut-off mechanism constructed in accordance with the teachings of this disclosure, which is coupled to... Figures 1 to 4 The fluid regulator includes a bushing;

[0110] Figure 54 yes Figure 53 A close-up image of the emergency shut-off mechanism;

[0111] Figure 55 Examples of fasteners that can be removed from the bushing to allow movement of the emergency cut-off mechanism are shown;

[0112] Figure 56 This is a cross-sectional view of the emergency cut-off mechanism, showing that several fasteners have been removed from the bushing;

[0113] Figure 57 Similar to Figure 56 However, it shows the emergency cut-off mechanism that moves to different locations;

[0114] Figure 58 Examples are given for those in Figure 57 Different positions and connections to Figures 1 to 4 Emergency shut-off mechanism of fluid regulator;

[0115] Figure 59 yes Figure 58 A close-up image of a portion;

[0116] Figure 60 This is a perspective view of the shaft of another example of a cam and shaft assembly constructed in accordance with the teachings of this disclosure;

[0117] Figure 61 yes Figure 60 A perspective view of the cam and shaft assembly;

[0118] Figure 62 It is when the cam is connected to the shaft in the first position. Figure 60 and Figure 61 A top view of the cam and shaft assembly;

[0119] Figure 63 Similar to Figure 62 However, it shows a cam connected to the shaft in the second position;

[0120] Figure 64 Similar to Figure 63 However, it shows a cam connected to the shaft in the third position; and

[0121] Figure 65 This is a perspective view of an example lever constructed in accordance with the teachings of this disclosure and applicable in any emergency cut-off mechanism described herein. Detailed Implementation

[0122] This disclosure relates to devices for use with fluid regulators and is intended to address issues related to known emergency shut-off safety devices (e.g., the aforementioned). This document discusses several issues related to emergency shut-off safety devices (OS / 66 series emergency shut-off devices). For example, the emergency shut-off safety devices described herein are accessible to the user, thereby facilitating normal line startup, maintenance, and / or troubleshooting. As another example, the emergency shut-off safety devices described herein can be moved to facilitate maintenance of other components of the fluid regulator without having to open or remove the emergency shut-off safety devices.

[0123] Figures 1 to 15An example of a fluid regulator 100 constructed in accordance with the teachings of this disclosure is illustrated. The fluid regulator 100 is configured to regulate the pressure of a supply fluid flowing through it to a substantially constant value, but also includes an emergency shut-off safety device 104 configured to provide a safe stop capability in the event of an overpressure condition (i.e., the pressure downstream of the fluid regulator 100 is greater than a maximum downstream pressure threshold) or an underpressure condition (i.e., the pressure downstream of the fluid regulator 100 is less than a minimum downstream pressure threshold). In this example, the fluid regulator 100 typically includes the emergency shut-off safety device 104, as well as a regulator body 108, a control element 112, and an actuator assembly 116. However, in other examples, the fluid regulator 100 may include different regulator bodies 108, different control elements 112, or different actuator assemblies 116.

[0124] First refer to Figures 1 to 4 The regulator body 108 has a fluid inlet 120 and a fluid outlet 124 connected by a fluid passage forming a flow path 128. A seat 130 is disposed within the regulator body 108 and defines a flow orifice 132 forming a portion of the flow path 128. The seat 130 may be removably or fixedly disposed in a suitable position within the regulator body 108. It should be understood that fluid flowing through the regulator body 108 flows from the fluid inlet 120 to the fluid outlet 124 via or through the flow path 128 (including the flow orifice 132). A control assembly 112 is arranged for displacement within the regulator body 108 to control the flow of fluid therethrough. The control assembly 112 includes a control element 136, which may be in the form of, for example, a valve plug or valve disc, and a valve stem 140 connected to the control element 136.

[0125] Actuator assembly 116 is a diaphragm-based actuator assembly operatively connected to regulator body 108 to control the position of control assembly 112 relative to seat 130. For example... Figure 3A As best illustrated, actuator assembly 116 typically includes actuator housing 141 and diaphragm 144 disposed within housing 141. Actuator housing 141 is coupled to regulator body 108 via a plurality of fasteners and is formed by a first housing or spring housing 146 and a second housing or diaphragm housing 148 fixed together, such as by one or more bolts connecting respective outer flanges of the first housing 146 and the second housing 148. Diaphragm 144 divides housing 141 into a first chamber 150 and a second chamber 152. First chamber 150 is at least partially defined by one side of diaphragm 144 and spring housing 146. Second chamber 152 is at least partially defined by the other side of diaphragm 144 and diaphragm housing 148.

[0126] Still referencing Figure 3AThe valve stem 140 has a first end operatively connected to a diaphragm 144 and a second end operatively connected to a control element 136. Movement of the diaphragm 144 in response to a pressure change at the fluid outlet 124 causes the valve stem 140 to move the control element 136 in such a manner that the process fluid pressure at the fluid outlet 124 is maintained within a preselected range. The actuator assembly 116 also includes a control spring 156 operatively connected to the diaphragm 144. The spring 156 is arranged to bias the diaphragm 144 against fluid pressure with a selected force to maintain a preselected pressure range at the fluid outlet 124. The force applied by the control spring 156 can be adjusted via an adjusting screw 160.

[0127] Subsequently, the diaphragm-based actuator assembly 116 is used to position the control element 136 relative to the flow path 128 to meet desired process control parameters (e.g., desired setpoint pressure). The spring 156 naturally rests relative to... Figure 3A The diaphragm 144 is oriented downwards and biased, which translates into movement of the control assembly 112 along the longitudinal axis A and toward the open position (i.e., away from the seat 130). To move the control assembly 112 from the open position to the closed position, where the control element 136 sealably engages the bottom surface of the seat 130 (and more specifically, the valve mounting surface 162), a pneumatic signal can be supplied to the second chamber 152 to increase the pressure in the second chamber 152. For example, the pneumatic signal can be supplied in response to or based on a pressure at the fluid outlet 124 that is greater than the desired setpoint pressure detected by a feedback pressure sensor. In any case, this pressure increase is sensed by the diaphragm 144 and ultimately overcomes the force exerted by the spring 156, thereby moving the diaphragm 144 in the upward direction (at least relative to the seat 130). Figure 3A The spring 156 can expand and cause the diaphragm 144 to move along the longitudinal axis A toward the closed position. When the pneumatic signal supplied to the second chamber 152 decreases and / or is eliminated, the spring 156 can expand and cause the diaphragm 144 to move downward, and in turn cause the control element 136 and the valve plug 140 to return to the open position.

[0128] As discussed above, the fluid regulator 100 includes an emergency shut-off safety device 104 configured to provide a safe stop capability when the pressure downstream of the fluid regulator 100 is greater than a maximum pressure threshold or less than a minimum pressure threshold. The emergency shut-off safety device 104 typically includes an internal emergency shut-off assembly 200 and an emergency shut-off mechanism 204 operatively connected to the internal emergency shut-off assembly 200, and a controller 208 operatively connected via the emergency shut-off mechanism 204 to the internal emergency shut-off assembly 200 for controlling the internal emergency shut-off assembly 200. Figure 2 , Figure 3A and Figure 3BAs best exemplified, the emergency shut-off safety device 104 is coupled to the regulator body 108 such that the internal emergency shut-off assembly 200 is disposed within the regulator body 108 (i.e., the emergency shut-off assembly 200 is inside the regulator body 108). More specifically, the internal emergency shut-off assembly 200 is disposed around a valve stem 140 extending through the regulator body 108, but it should be understood that the internal emergency shut-off assembly 200 is operatively disengaged from the valve stem 140. Also as Figure 2 , Figure 3A and Figure 3B As illustrated, the emergency shut-off mechanism 204 is partially disposed within and partially disposed outside the regulator body 108, and the controller 208 is connected to the external portion of the emergency shut-off mechanism 204.

[0129] In some examples, the emergency shut-off safety device 104 may be partially or completely removed from the regulator body 108 (e.g., to facilitate maintenance of the emergency shut-off safety device 104 or other components of the fluid regulator 100). In some examples, the emergency shut-off safety device 104 may be coupled to the regulator body 108 during the manufacture of the fluid regulator 100. However, in other examples, the emergency shut-off safety device 104 may be field-positionable and / or adjustable during the installation or maintenance of the fluid regulator 100.

[0130] refer to Figures 2 to 4 The internal emergency cut-off assembly 200 typically includes an emergency cut-off support 212, an emergency cut-off control element 216 (e.g., an emergency cut-off disc or plug), and an emergency cut-off spring seat 220. For example... Figure 2 , Figure 3A and Figure 3BIn the best example, the emergency cut-off support 212 is coupled to both a portion of the fluid regulator 100 and the seat 130. In this example, the emergency cut-off support 212 has a first end coupled (e.g., bolted) to a portion of the actuator assembly 116. The emergency cut-off support 212 has a second end disposed abutting against the top surface 228 of the seat 130 to retain the seat 130 within the regulator body 108. The emergency cut-off support 212 also serves to guide the emergency cut-off spring seat 220 within the regulator body 108. The emergency cut-off control element 216 is secured to the emergency cut-off spring seat 220 in any known manner (e.g., via a retaining pin). The emergency cut-off spring seat 220 is coupled to the emergency cut-off control element 216 such that the emergency cut-off spring seat 220 generally moves in unison with (and vice versa) the emergency cut-off control element 216. When the emergency shut-off safety device 104 is in operation, the emergency shut-off control element 216 and the emergency shut-off spring seat 220 are movable relative to the seat 130 to control the fluid flow through the regulator body 108. More specifically, the emergency shut-off control element 216 and the emergency shut-off spring seat 220 are movable along the longitudinal axis A and within the regulator body 108. Figure 2 , Figure 3A and Figure 3B The device moves between a first fully open position and a second closed position. In the first position, the emergency shut-off control element 216 is spaced apart from the seat 130 (and more specifically, the emergency shut-off mounting surface 232 formed on the top surface 228 opposite to the valve mounting surface 162), thereby opening the flow orifice 132 and allowing fluid flow between the fluid inlet 120 and the fluid outlet 124. Conversely, in the second position, the emergency shut-off control element 216 is positioned to form a sealing engagement with the seat 130 (and more specifically, the emergency shut-off mounting surface 232), thereby closing the flow orifice 132 and preventing fluid flow between the fluid inlet 120 and the fluid outlet 124.

[0131] In this example, the internal emergency cut-off assembly 200 also includes a pair of biasing elements—a first biasing element 236 and a second biasing element 240. The first biasing element 236, in the form of a spring in this example, is configured to apply a biasing force to the emergency cut-off spring seat 220 to cause the emergency cut-off spring seat 220 (and consequently the emergency cut-off control element 216) toward the seat 130 and toward the second position. For this purpose, the first biasing element 236 has one end supported against a portion of the emergency cut-off support 212 and another end supported against the top surface of the emergency cut-off spring seat 220. In this example, the second biasing element 240 also takes the form of a spring, but is configured to apply a biasing force to the emergency cut-off control element 216 to maintain a minimum distance between the emergency cut-off control element 216 and the emergency cut-off spring seat 220, sufficient to accommodate a portion of the emergency cut-off mechanism 204, as will be discussed in more detail below. For this purpose, the second biasing element 240 has one end supported against the bottom surface (also referred to as the underside) of the emergency cut-off spring seat 220 and another end supported against a portion of the emergency cut-off control element 216. The second biasing element 240 also functions in the reset of the emergency cut-off mechanism 204 (after it is triggered).

[0132] Now for reference Figure 2 , Figure 3A and Figures 5 to 8 The emergency shut-off mechanism 204 typically includes a housing 244, a stuffing box 246, a shaft 248, a cam 252, a latch pin 256, a latch 260, and a lever 264. In this example, the housing 244, in the form of a mechanism box, is removably coupled to the regulator body 108 (although the housing 244 is fixedly coupled to the regulator 108). Figure 3A In the best example, the stuffing box 246 is partially disposed within the regulator body 108 and partially disposed within the housing 244. The stuffing box 246 is then coupled to the housing 244 to connect the housing 244 to the regulator body 108, even though the majority of the housing 244 is located outside the regulator body 108. In this example, the stuffing box 246 is coupled to the housing 244 via one or more bolts extending through the opposing flange surfaces of the housing 244 and the stuffing box 246, respectively. However, in other examples, the stuffing box 246 may be coupled to the housing 244 in different ways. Also, Figure 3A As illustrated, one or more sealing elements are arranged between housing 244 and stuffing box 246 to prevent fluid leakage therebetween.

[0133] Shaft 248 typically extends through both housing 244 and stuffing box 246. Therefore, when housing 244 is connected to regulator body 108 via stuffing box 246, shaft 248 extends along transverse axis B perpendicular to longitudinal axis A, such that shaft 248 is perpendicular to valve stem 140. Additionally, as... Figure 3A As best illustrated, a first portion of shaft 248 is disposed within regulator body 108, a second portion of shaft 248 is disposed outside regulator body 108 but within housing 244, and a third portion of shaft 248 (including end 272 of shaft 248) is disposed outside both regulator body 108 and housing 244. Therefore, when the emergency shut-off mechanism 204 needs to be reset, end 272 of shaft 248 can be accessed by the end user of fluid regulator 100, as will be discussed in more detail below.

[0134] The cam 252 is carried by the shaft 248 at or near the end 276 of the shaft 248, which is opposite to the end 272 of the shaft 248. Therefore, as... Figure 2 and Figure 3A As best illustrated, cam 252 is carried by shaft 248 at a position within regulator body 108 and outside housing 244. Furthermore, cam 252 has a cam surface 280 extending outward from shaft 248, such that cam surface 280 is positioned operatively connected to emergency cut-off control element 216. More specifically, as... Figure 2 and Figure 3A In the best example, cam surface 280 extends outward in a direction parallel to the transverse axis B. Cam surface 280 is then positioned to selectively engage the bottom surface of emergency cut-off spring seat 220. As discussed above, emergency cut-off spring seat 220 moves in unison with emergency cut-off control element 216, such that cam surface 280 is positioned operatively connected to emergency cut-off control element 216 via emergency cut-off spring seat 220.

[0135] The latch pin 256 is also carried by the shaft 248, but at a position spaced apart from the cam 252, such that the latch pin 256 is positioned closer to the end 272 than the cam 252. More specifically, the latch pin 256 is carried by the shaft 248 at a position along the second surface of the shaft 248 (i.e., between the ends 272 and 276 of the shaft 248). The latch pin 256 is then positioned within the housing 244. In this example, the latch pin 256, having a substantially cylindrical shape, extends outward from the shaft 248 and has a recess defining a first contact surface 282 (see [link to housing 248]). Figure 7 and 8 ).

[0136] The latch 260 is pivotally connected to the housing 244 such that the latch 260 is configured to selectively engage the latch pin 256. For example... Figure 6 and Figure 7In the best example, latch 260 has a base 284 and an arm 286 extending outwardly from the base 284. The base 284 (which in this example has a substantially cylindrical shape) is disposed within a housing 244 and extends in a direction substantially parallel (if not entirely parallel) to the transverse axis B. In this example, latch 260 is pivotally coupled to housing 244 via a pin 285 inserted through an opening 287 formed in the base 284; however, in other examples, latch 260 may be pivotally coupled to housing 244 in a different manner. In this example, the L-shaped arm 286 defines a second contact surface 288 positioned near a first end 292 of latch 260 and configured to selectively engage the first contact surface 282 of latch pin 256 to selectively retain latch pin 256 relative to latch 260. Figure 5 , Figure 7 and Figure 8 In the position shown.

[0137] exist Figure 5 , Figure 7 and Figure 8 In the positions shown, both the first contact surface 282 and the second contact surface 288 are parallel to the emergency cut-off axis C (which is parallel to the longitudinal axis A and perpendicular to the transverse axis B). Then, as... Figure 5 In the best example, when latch 260 engages latch pin 256, the second contact surface 288 is substantially flush with the first contact surface 282. However, in other examples, the first contact surface 282 and the second contact surface 288 may be oriented differently, as will be described in more detail below.

[0138] Similar to latch 260, lever 264 is pivotally coupled to housing 244. Lever 264 is also operatively connected to latch 260 and configured to be selectively engaged by controller 208. Figure 5 , Figure 7 and Figure 8In the best-illustrative example, in this example, lever 264 has a generally triangular shape with three vertices or nodes (first vertex 294, second vertex 296, and third vertex 300). First vertex 294 is generally positioned adjacent to opening 304 formed in housing 244. Thus, first vertex 294 is positioned to be selectively engaged by a portion of controller 208, as will be discussed in more detail below. Meanwhile, second vertex 296 is generally configured to facilitate the reset of emergency cut-off mechanism 204 and is therefore positioned to selectively engage a portion of latch pin 256 when first vertex 294 is engaged by controller 208, as will also be discussed in more detail below. Finally, although partially concealed and not visible, third vertex 300 is generally configured to facilitate the unlocking of emergency cut-off mechanism 204 and is therefore operably connected to latch 260 (in) via second lever 308 also disposed in housing 244. Figure 8 (Best visible in the middle). The second lever 308 may have a symmetrical or asymmetrical configuration. In any case, the second lever 308 operatively connects the lever 264 to the latch 260 (or vice versa) through contact with both components. In this example, the second lever 308 is pivotally connected to the latch 260 via a pin 312 that extends through the second lever 308 and engages an inclined surface 316 formed near the second end 318 of the latch 260 opposite the first end 316. In this example, the second lever 308 is fixedly connected to the lever 264 by a third apex 300 disposed around a portion of the second lever 264. However, in other examples, the second lever 308 may be integrally formed with the lever 264, such that the lever 264 and the second lever 308 form a single component. Figure 65 An example of such a single lever 6500 is shown, which effectively combines lever 264 with a second lever 308.

[0139] Now for reference Figure 2 , Figure 5 , Figure 7 and Figure 8 The emergency cut-off mechanism 204 also optionally includes a plate 320 and a torsion spring 324. The plate 320 is typically configured to help support and hold the components of the emergency cut-off mechanism 204 in place. For this purpose, the plate 320 is securely fixed to the housing 244 (e.g., via a plurality of bolts 322), as... Figures 5 to 7As illustrated, in this example, plate 320 is substantially Z-shaped and spans the width of the emergency cut-off mechanism 204. In this example, plate 320 includes a first opening 328 sized to receive the end 272 of shaft 248 and a second opening 332 sized to receive a portion of second lever 264 for pivoting second lever 308 and lever 308. However, in other examples, plate 320 may be sized, shaped, and / or arranged differently. On the other hand, torsion spring 324 is configured to bias latch 260 (and more specifically, second contact surface 288) into engagement with latch pin 256 (and more specifically, first contact surface 282). For this purpose, torsion spring 324 has one end coupled to latch 260 (specifically, arm 286) and the other end attached to plate 320. However, in other examples, torsion spring 324 may be coupled to different components of the emergency cut-off mechanism 204. For example, the torsion spring 324 may alternatively have one end connected to the latch 260 and the other end connected to the lever 264 or the second lever 308.

[0140] Now for reference Figure 9 and Figure 10 Controller 208 is a known controller manufactured by Fisher Controls International LLC. In this example, controller 208 is a VSX8 controller. Therefore, for the sake of brevity, further details of controller 208 will be omitted. However, it is important for the purposes of this application to understand that controller 208 is coupled to a portion of housing 244 and has plug 336. When the pressure downstream of fluid regulator 100 is greater than a maximum pressure threshold or less than a minimum pressure threshold, controller 208 is actuated or activated, causing plug 336 to selectively engage lever 264 so that emergency shut-off mechanism 204 interacts with internal emergency shut-off assembly 200, causing emergency shut-off safety device 104 to close fluid regulator 100.

[0141] For example, when the pressure downstream of the fluid regulator 100 is greater than the minimum pressure threshold but less than the maximum pressure threshold, the emergency shut-off safety device 104 is in the unactivated or open position (i.e., the emergency shut-off safety device 104 does not provide any safety stop), and the fluid regulator 100 is open and regulates the pressure of the supply fluid flowing through it as normally intended. When the emergency shut-off safety device 104 is in this unactivated position, components of the internal emergency shut-off assembly 200, emergency shut-off mechanism 204, and controller 208, as... Figure 11A and Figure 11B Positioned as illustrated. More specifically, the plug 336 of the controller 208 is spaced apart from the lever 264 (and more specifically, from the first vertex 294), as shown. Figure 11A As illustrated. Then, as... Figure 11A As illustrated, latch 260 is in a first position, wherein latch pin 256 extends in a direction substantially perpendicular to the transverse axis B, and the second contact surface 288 of latch 260 engages the first contact surface 282 of latch pin 256. Thus, latch 260 securely (but releasably) holds latch pin 256 abutting against latch 260 in place. Due to this positioning of latch pin 256, shaft 248 and cam 252 are positioned such that cam surface 280 engages the bottom surface of emergency cut-off spring seat 220, as... Figure 11B As illustrated. Subsequently, the cam surface 280 holds the emergency cut-off control element 216 and the emergency cut-off spring seat 220 in the first fully open position, which also... Figure 11B (as well as Figure 3A and Figure 4 As shown in the diagram, since the emergency shut-off safety device 104 is in the untouched position, the diaphragm-based actuator assembly 116 operates to position the control element 136 relative to the flow path 128 to meet desired process control parameters. More specifically, the diaphragm-based actuator assembly 116 moves the control element 112 between the open and closed positions as needed to meet desired process control parameters.

[0142] However, when the pressure downstream of the fluid regulator 100 decreases below the minimum pressure threshold or increases above the maximum pressure threshold, the emergency shut-off safety device 104 is actuated or activated to stop the fluid regulator 100. First, the controller 208 detects the pressure increase or decrease, and in response to this detection, the controller 208 is actuated or activated, causing the plug 336 to move outward toward the emergency shut-off mechanism 204 (in... Figure 10 and Figure 11A (In the orientation shown, to the left). The movement of plug 336 in this manner causes plug 336 to pass through opening 304 and engage lever 264, and more specifically, engage the first apex 294 of lever 264. This engagement causes lever 264 to rotate counterclockwise, which in turn causes the second lever 308 (which is fixed to lever 264) to rotate counterclockwise as well. The rotation of the second lever 308 in this manner causes latch 260 (which is pivotally connected to the second lever 308) to rotate counterclockwise from... Figure 11A The first position shown is rotated to Figure 12 The second position shown. Although in Figure 11A or Figure 12 While not visible, it should be understood that when latch 260 moves from the first position to the second position, pin 312 slidably engages the inclined surface 316 of latch 260. Furthermore, the movement of latch 260 from the first position to the second position disengages latch 260 (and more specifically, the second contact surface 288) from latch pin 256 (and more specifically, the first contact surface 282).

[0143] With latch 260 disengaged from latch pin 256, latch 260 no longer securely holds latch pin 256. Subsequently, latch pin 256 rotates clockwise from... Figure 12 Rotate to the position shown Figure 13A The position shown. This rotation of the latch pin 256 subsequently causes the shaft 248 and the cam 252 carried by the shaft 248 to rotate in a similar manner. Although in Figure 13A While not visible, it should be understood that the rotation of cam 252 in this manner causes cam surface 280 to move out of engagement and away from the bottom surface of emergency cut-off spring seat 220. Nothing remains to hold emergency cut-off control element 216 or emergency cut-off spring seat 220 in the fully open position (e.g., Figure 11B In the case of (as illustrated), the emergency cut-off control element 216 and the emergency cut-off spring seat 220 are allowed to move from the fully open position to the... Figure 13B The illustrated closed position (in some cases, when the emergency cut-off control element 216 and the emergency cut-off spring seat 220 reach the closed position, the cam surface 280 can re-engage with the bottom surface of the emergency cut-off spring seat 220). In this closed position, the emergency cut-off control element 216 is positioned to seal against the seat 130 (and more specifically, the emergency cut-off mounting surface 232), thereby closing the flow orifice 132 and preventing any fluid flow between the fluid inlet 120 and the fluid outlet 124. Therefore, the emergency cut-off safety device 104 prevents any fluid flowing through the fluid inlet 120 from flowing downstream of the fluid regulator 100.

[0144] The emergency shut-off safety device 104 continues to provide this safety stop until the overvoltage or undervoltage condition has been corrected and the stop is no longer needed, at which point the emergency shut-off safety device 104 can be opened, i.e., returned to its unactivated position. Advantageously, the emergency shut-off safety device 104 can be reset or returned to its unactivated position in a single step. More specifically, the emergency shut-off safety device 104 can be opened by rotating shaft 248 counterclockwise from... Figure 13A Rotate to the position shown Figure 14 The axis 248 is rotated in such a manner (which can be achieved by the end user of the fluid regulator 100 using a tool (e.g., a wrench) or in some other way) that (i) a portion of the latch pin 256 engages the lever 264 (and more specifically, the second apex 296), and (ii) the cam surface 280 re-engages the bottom surface of the emergency cut-off spring seat 220 and causes the emergency cut-off control element 216 and the emergency cut-off spring seat 220 to return to their untouched position. Figure 13B The closed position shown has been moved back. Figure 11B The fully open position shown.

[0145] The engagement between latch pin 256 and lever 264 further allows lever 264 to rotate clockwise from Figure 13A Rotate to the position shown Figure 15 The position shown. Lever 264 to Figure 15 The rotation of the indicated position causes the second lever 308 to also rotate clockwise, which in turn allows the spring 324 to rotate the latch 260 clockwise. Figure 15 The position shown. Lever 264 to Figure 15 The rotation to the indicated position also causes lever 264 (and more specifically, the first apex 294 of lever 264) to engage again with plug 336 of controller 208, but this time the engagement causes plug 336 to move inward (in... Figure 14 Move to the right (as shown in the orientation) away from the outer shell 244 (e.g.) Figure 15 (as illustrated in the example) and eventually disengages from lever 264.

[0146] When shaft 248 is released (e.g., released from a tool), latch pin 256 will attempt to rotate clockwise from... Figure 15 Rotate back to the position shown Figure 13A The position shown. However, because it is operatively connected to lever 264 and has been rotated to... Figure 15 In the position shown, latch 260 prevents latch pin 256 from doing so. Instead, latch 260 engages latch pin 256 and re-engages latch pin 256 via first contact surface 282 and second contact surface 288, as shown. Figure 11A As illustrated, this again securely holds the latch pin 256 against the latch 260 in the appropriate position. Subsequently, the cam surface 280 engaging the bottom surface of the emergency cut-off spring seat 220 again holds the emergency cut-off control element 216 and the emergency cut-off spring seat 220 in the fully open position.

[0147] Now for reference Figure 16 It should be understood that some components of the emergency shut-off mechanism 204 within housing 244 can be repositioned to provide an emergency shut-off mechanism 1604 that effectively serves as a mirror image of the emergency shut-off mechanism 204. This repositioning allows the controller 208 to be located in a different position relative to the fluid regulator 100, for example, when this is necessary due to space constraints in the environment housing the fluid regulator 100. More specifically, by repositioning some components of the emergency shut-off mechanism 204, the controller 208 can be detached from the first portion 1606 of housing 244 and alternatively coupled to the second portion 1610 of housing 244. Consequently, the controller 208 will occupy a different position relative to housing 244 (and consequently, regulator body 108).

[0148] Still referencing Figure 16It should be understood that the emergency cut-off mechanism 1604 includes a different plate than the plate 320 fixed to the housing 244 in the emergency cut-off mechanism 204. Instead, the emergency cut-off mechanism 1604 includes a substantially T-shaped plate 1620. While the plate 1620 is similarly and securely fixed to the housing 244 (e.g., via a plurality of bolts 1622), the plate 1620 includes three openings (instead of the two openings included in the plate 320)—a first opening 1628 sized to receive the end 272 of the shaft 248, a second opening 1632 sized to receive a portion of the second lever 308 so as to pivot the second lever 308 and lever 264 when the controller 208 is engaged with the first portion 1606 of the housing 244, and a third opening 1636 sized to receive a portion of the second lever 308 so as to pivot the second lever 308 and lever 264 when the controller 208 is engaged with the second portion 1610 of the housing 244.

[0149] Figures 17 to 20 Another example of an emergency shut-off mechanism 1704, which can be used in place of emergency shut-off mechanisms 204 and 1604, is illustrated. It should be understood that emergency shut-off mechanism 1704 effectively combines the arrangement of some components of emergency shut-off mechanism 204 with the arrangement of some components of emergency shut-off mechanism 1604 to provide a pair of linked emergency shut-off assemblies 1708A, 1708B within housing 244, either of which can be actuated by controller 208 to close fluid regulator 100. Therefore, controller 208 can be coupled to a first portion 1712 or a second portion 1716 of housing 244 of emergency shut-off mechanism 1704, and controller 208 can be easily and quickly coupled to either first portion 1712 or second portion 1716, and controller 208 can be easily and quickly moved between the first portion 1712 and second portion 1716 of housing 244 as needed. It should be understood that when controller 208 is connected to the first part 1712, controller 208 will engage emergency shut-off assembly 1708A to close the fluid regulator 100, and when controller 208 is connected to the second part 1716, controller 208 will engage emergency shut-off assembly 1708B to close the fluid regulator 100. However, in either case, because emergency shut-off assemblies 1708A and 1708B are linked together, regardless of which emergency shut-off assembly 1708A or 1708B is engaged by controller 208, emergency shut-off assemblies 1708A and 1708B will move uniformly.

[0150] like Figures 17 to 19As best exemplified, the emergency cut-off mechanism 1704 includes the shaft 248, cam 252, and plate 1620 discussed above, and each of the emergency cut-off assemblies 1708A and 1708B includes a latch pin 256, a latch 260, a lever 264, a pin 285, a second lever 308, and a pin 312. Therefore, the emergency cut-off mechanism 1704 includes two latch pins 256, two latches 260, two levers 264, two pins 285, two second levers 308, and two pins 312. Figure 19 and Figure 20 As best exemplified herein, the emergency cut-off mechanism 1704 also includes a plurality of gear teeth 1720 that facilitate linking the emergency cut-off assemblies 1708A and 1708B together. More specifically, the emergency cut-off mechanism 1704 includes two convex gear teeth 1720A and two concave gear teeth 1720B, the two concave gear teeth selectively engaging the two convex gear teeth 1720A respectively when the controller 208 engages either the emergency cut-off assembly 1708A or the emergency cut-off assembly 1708B. The gear teeth 1720A and 1720B of the first emergency cut-off assembly 1708A are operatively coupled to both the latch 260 and the lever 264 of the first emergency cut-off assembly 1708A. Similarly, the gear teeth 1720A and 1720B of the second emergency cut-off assembly 1708B are operatively coupled to both the latch 260 and the lever 264 of the second emergency cut-off assembly 1708B.

[0151] Therefore, in a similar manner to that discussed above, when the first emergency cut-off assembly 1708A (and more specifically, lever 264) is actuated by controller 208, as... Figure 21A As illustrated, lever 264 of the first emergency cut-off assembly 1708A will rotate (counterclockwise), which in turn will rotate the second lever 308 and pin 312 of the first emergency cut-off assembly 1708A, and this will cause the latch 260 of the first emergency cut-off assembly 1708A to move from a first position to a second position. As discussed above, the movement of the latch 260 of the first emergency cut-off assembly 1708A from the first position to the second position closes the fluid regulator 100. More specifically, the movement of the latch 260 of the first emergency cut-off assembly 1708A from the first position to the second position causes the latch 260 (and more specifically, the second contact surface 288) to disengage from the latch pin 256 (and more specifically, the first contact surface 282), which ultimately causes the cam surface 280 to move out of engagement and away from the bottom surface of the emergency cut-off spring seat 220. This then allows the emergency cut-off control element 216 and the emergency cut-off spring seat 220 to move from the fully open position to the closed position.

[0152] Simultaneously, the movement of latch 260 causes the gear teeth 1720A and 1720B of the first emergency cut-off assembly 1708A (which are connected to latch 260 via pin 285) to rotate counterclockwise. This rotation of the gear teeth 1720A and 1720B in this direction causes the gear teeth 1720A and 1720B of the second emergency cut-off assembly 1708B to rotate clockwise. This rotation of the gear teeth 1720A and 1720B in this direction causes the latch 260 of the second emergency cut-off assembly 1708B (which is connected to gear teeth 1720A and 1720B of the second emergency cut-off assembly 1708B via pin 285) to move from a first position to a second position.

[0153] Beneficial, such as Figures 22A to 22C As illustrated, when controller 208 is connected to the second part 1716, actuated, and pushes the second emergency shut-off assembly 1708B instead of the first emergency shut-off assembly 1708A, the emergency shut-off mechanism 1704 functions in the same manner. Additionally, it should be understood that when controller 208 is actuated and pulls the first emergency shut-off assembly 1708A (when connected to the first part 1712) (as shown in the illustration), the emergency shut-off mechanism 1704 also functions in the same manner. Figures 23A to 23C (as illustrated) or pull the second emergency shut-off assembly 1708B (when connected to the second part 1716) (as shown) Figures 24A to 24C When (as illustrated), the emergency shut-off mechanism 1704 functions in the same manner. In other words, the emergency shut-off mechanism 1704 is operable whether the controller 208 is pulled (and pulled from the left or right) or pushed (and pushed from the left or right).

[0154] Figure 25A A portion of another example of an emergency cut-off mechanism 2504, which can be used in place of any of the emergency cut-off mechanisms 204, 1604, and 1704 described herein, is illustrated. Emergency cut-off mechanism 2504 is substantially similar to emergency cut-off mechanism 1704, except that the cam 252 of emergency cut-off mechanism 2504 is positioned differently from the cam 252 of emergency cut-off mechanism 1704. More specifically, the cam 252 of emergency cut-off mechanism 2504 is rotated approximately 180 degrees relative to the cam 252 of emergency cut-off mechanism 1704, as can be seen by comparison. Figure 25A and Figure 25B (This is illustrated by showing the position of the cam 252 of the emergency cut-off mechanism 1704.) Subsequently, the cam surface 280 of the emergency cut-off mechanism 2504 also rotates approximately 180 degrees relative to the cam surface 280 of the emergency cut-off mechanism 1704, as can be seen by comparison. Figure 25A and Figure 25BFor example. Therefore, it should be understood that when the latch 260 moves between the first and second positions to open or close the fluid regulator 100, the shaft 248 of the emergency shut-off mechanism 2504 rotates in the opposite direction to the shaft 248 of the emergency shut-off mechanism 1704.

[0155] Figures 26 to 28B Another example of an emergency cut-off mechanism 2604, which can be used in place of any of the emergency cut-off mechanisms 204, 1604, 1704, and 2504 described herein, is illustrated. Emergency cut-off mechanism 2604 is substantially similar to emergency cut-off mechanism 1704, specifically in that it further includes a first emergency cut-off assembly 2608A and a second emergency cut-off assembly 2608B linked together, such that regardless of which emergency cut-off assembly 2608A, 2608B is engaged by controller 208, the first emergency cut-off assembly 2608A and the second emergency cut-off assembly 2608B move together in a consistent manner. However, the first emergency cut-off assembly 2608A and the second emergency cut-off assembly 2608B are linked together in a different manner than the first emergency cut-off assembly 1708A and the second emergency cut-off assembly 1708B. More specifically, instead of using gear teeth 1720, the first emergency cut-off assembly 2608A and the second emergency cut-off assembly 2608B are connected together via a link 2610, which connects to both the lever 264 of the first emergency cut-off assembly 2608A and the lever 264 of the second emergency cut-off assembly 2608B. Figures 26 to 28B As illustrated in this example, link 2610 is connected to lever 264 via pin 2612 positioned near the first apex 294 of lever 264. However, in other examples, link 2610 may be connected to different portions of lever 264 to connect the first emergency cut-off assembly 2608A and the second emergency cut-off assembly 2608B. In any case, the use of link 2610 advantageously allows the emergency cut-off mechanism 2604 to be fully assembled outside the housing 244.

[0156] Emergency shut-off mechanisms 2504 and 2604 are particularly advantageous because both mechanisms 2504 and 2604 allow the housing 244 to be coupled to different parts of the regulator body 108, enabling the controller 208 (which itself can be coupled to different parts of the housing 244) to be positioned relative to the regulator body 108 in several different orientations. For example, as Figure 29As illustrated, the controller 208 can be positioned relative to the regulator body 108 in at least four different orientations: (1) a first orientation 1a, wherein the housing 244 is coupled to a first portion of the regulator body 108 and the controller 208 is coupled to the top of the housing 244; (2) a second orientation 1b, wherein the housing 244 is coupled to the first portion of the regulator body 108 but the controller 208 is coupled to the bottom of the housing 244; (3) a third orientation 1c, wherein the housing 244 is coupled to a second portion of the regulator body 108 and the controller 208 is coupled to the bottom of the housing 244; and (4) a fourth orientation 1d, wherein the housing 244 is coupled to a second portion of the regulator body 108 and the controller 208 is coupled to the top of the housing 244. It should be understood that the controller 208 can be easily and quickly moved between any of these different orientations (or other orientations) as needed.

[0157] In some examples, any emergency cut-off mechanism described herein may be modified to ensure that the latch pin 256 is not unintentionally released from the latch 260 (e.g., due to vibration or shock occurring during operation of the fluid regulator 100). For example, any emergency cut-off mechanism described herein may be modified such that the first contact surface 282 of the latch pin 256 is inclined relative to the second contact surface 288 of the latch 260, because it has been found that orienting the first contact surface 282 and the second contact surface 288 in this manner prevents the emergency cut-off mechanism from unintentionally releasing the latch (e.g., when subjected to vibration or shock), but still allows the emergency cut-off mechanism to release the latch when needed. More specifically, the first contact surface 282 of the latch pin 256 may be oriented at a first angle β1 relative to the emergency cut-off axis C (which is parallel to the longitudinal axis A), and the second contact surface 288 may be oriented at a second angle β2 relative to the emergency cut-off axis C, as... Figure 30 As illustrated in the illustration. Preferably, the first and second angles are selected such that the second contact surface 288 is tilted relative to the first contact surface 282 at an angle between approximately 1.5 degrees and approximately 2.5 degrees, because it has been found that values ​​below 1.5 degrees still allow such unintentional latching, while values ​​above 2.5 degrees impede the ability of the emergency cut-off mechanism to unlock when needed.

[0158] In some examples, any emergency cut-off mechanism described herein can be modified to replace the torsion spring 324 with a different biasing element that applies a biasing force to the latch 260, preventing the emergency cut-off mechanism from unintentionally unlocking (e.g., when subjected to vibration or shock), but still allowing the emergency cut-off mechanism to unlock when desired. For example, the housing 244 can be modified to include a compression spring 3000 having an end disposed against the underside of the latch 260, such that the compression spring 3000 applies a compressive force to the underside of the latch 260 to bias the latch 260 to its first position (i.e., engaging the latch pin 256), as... Figure 31 and Figure 32 As illustrated in the example. In some cases, any emergency shut-off mechanism may also be modified to include a force adjuster located adjacent to one end of the compression spring 3000 and configured to adjust the compressive force applied by the compression spring 3000 when needed (e.g., taking into account different tolerances). Figure 31 and Figure 32 In the illustrated example, the force adjuster takes the form of a threaded pin 3004, which is threaded into a threaded opening 3008 formed in the housing 244 and has one end positioned against a compression spring 3000 opposite the latch 260. It should be understood that by moving (e.g., rotating) the threaded pin 3004 toward the latch 260, the threaded pin 3004 will further compress the compression spring 3000, thereby increasing the compressive force exerted by the compression spring 3000 on the underside of the latch 260. Conversely, by moving the threaded pin 3004 away from the latch 260, the threaded pin 3004 will allow the compression spring 3000 to expand, thereby reducing the compressive force exerted by the compression spring 3000 on the underside of the latch 260.

[0159] Figures 33A to 33CAnother example of an internal emergency cut-off assembly 3300 that can be used in place of internal emergency cut-off assembly 200 is illustrated. Internal emergency cut-off assembly 3300 is specifically configured for use with emergency cut-off mechanism 1704; however, it should be understood that internal emergency cut-off assembly 3300 can be used with other emergency cut-off mechanisms (e.g., emergency cut-off mechanism 204). Internal emergency cut-off assembly 3300 is similar to internal emergency cut-off assembly 200 because it includes an emergency cut-off support 3312, an emergency cut-off control element 3316, and an emergency cut-off spring seat 3320. However, internal emergency cut-off assembly 3300 is different because the emergency cut-off spring seat 3320 has a different shape than the emergency cut-off spring seat 220 of internal emergency cut-off assembly 200. More specifically, the emergency cut-off spring seat 3320 has a flange portion 3324 that is narrower than the flange portion of the emergency cut-off spring seat 220, and the flange portion 3324 is located at the top end of the emergency cut-off spring seat 3320, while the flange portion of the emergency cut-off spring seat 3320 is located between the top end and the bottom end of the emergency cut-off spring seat 220.

[0160] It should be understood that, due to the design of the emergency cut-off spring seat 3320, the selectively engaged flange portion 3324 is rotated to bring the emergency cut-off control element 3316 into its fully open position. Figure 33B and Figure 33C (as illustrated) and its closed position ( Figures 34A to 34C The rotation of the cam surface 280 moving between (as illustrated) is less than the rotation of the cam surface 280 used to move the emergency cut-off control element 216 between its fully open and closed positions. In one example, the cam surface 280 rotates approximately 60 degrees to move the emergency cut-off control element 216 between its fully open and closed positions, while the cam surface 280 rotates approximately 70 degrees to move the emergency cut-off control element 216 between its fully open and closed positions. Consequently, the shaft 248 and latch pin 256 of the emergency cut-off mechanism 1704 do not need to rotate as far, thereby helping to ensure that the latch pin 256 does not unintentionally move other components of the emergency cut-off mechanism 1704.

[0161] At the same time, such as Figures 34A to 34CAs illustrated, when the emergency cut-off safety device 104 employing the emergency cut-off mechanism 1704 is in the actuated position, the use of the emergency cut-off spring seat 3320 may increase the likelihood that the cam surface 280 will disengage from the emergency cut-off spring seat 3320. Accidental disengagement may also occur in other cases when the contact surface between the cam surface 280 and the emergency cut-off spring seat 220 is small and the emergency cut-off safety device 104 employing any other emergency cut-off mechanism described herein is in the actuated position. In any case, disengagement of the cam surface 280 from the emergency cut-off spring seat (220 or 3320) will cause the emergency cut-off mechanism described herein to not function as intended, and the cam surface 280 and / or the emergency cut-off spring seat (220 or 3320) may be damaged. Therefore, in some examples, the emergency cut-off mechanism described herein may be modified such that the cam 252 (which carries the cam surface 280) can slide along the shaft 248 to facilitate engagement between the cam surface 280 and the emergency cut-off spring seat (220 or 3320) at all times, particularly when the emergency cut-off safety device 104 is actuated.

[0162] Figures 35A to 35C An example of this type is illustrated, wherein the emergency cut-off mechanism further includes a biasing element 3500, and the shaft 248 is modified to receive the biasing element 3500 and allow adjustment of the cam surface 280 relative to the shaft 248. In this example, the shaft 248 is modified to include a plurality of stepped radial surfaces with different diameters and includes a travel stop 3504 fixedly attached to an end 3508 of the shaft 248, which in this example is an elastic ring. Figure 35A In the best example, cam 252 is movably disposed on one of the radial surfaces (radial surface 3512 closest to end 3508). Meanwhile, in this example, a biasing element 3500, in the form of a spring, is disposed between one of the radial surfaces (innermost stepped surface 3512) and the lower side of cam 252 opposite to cam surface 280. The biasing element 3500 then biases cam 252 (and more specifically, cam surface 280) outward toward travel stop 3504, preventing cam 252 from moving beyond end 3508 of shaft 248 (which would disengage cam 252 from shaft 248).

[0163] like Figure 36 and Figure 37 As illustrated, the biasing element 3500 helps maintain engagement between the cam surface 280 and the bottom surface of the emergency cut-off spring seat (e.g., emergency cut-off spring seat 220), regardless of whether the emergency cut-off safety device 104 is in the unactivated position. Figure 36 ) or is still in the triggered position ( Figure 37 For example, when the emergency shut-off safety device 104 is in the untouched position ( Figure 36When the cam surface 280 engages the bottom surface of the emergency cut-off spring seat 220, the cam 252 is spaced apart from the end 3508 of the shaft 248. The biasing element 3500 then biases the cam surface 280 to engage with the bottom surface of the emergency cut-off spring seat 220. On the other hand, when the emergency cut-off safety device 104 moves to the activated position ( Figure 37 When activated, the biasing element 3500 biases the cam 252 outward toward the end 3508, causing the cam surface 280 to be pushed into engagement with the bottom surface of the emergency cut-off spring seat 220. Therefore, it should be understood that in the unactivated position, the distance between the stepped surface 3512 and the lower side of the cam 252 is equal to D1, while in the activated position, the distance between the stepped surface 3512 and the lower side of the cam 252 is equal to D2, where D2 is greater than D1.

[0164] Figure 38A and Figure 38B Examples of alternatives are given. Figures 35A to 35C The example shown uses another example. Figure 38A and Figure 38B In the illustrated example, the emergency cut-off mechanism also includes a biasing element 3800 and a bushing 3802, the bushing being coupled to the shaft 248 to accommodate the biasing element 3800 and to facilitate adjustment of the cam surface 280 relative to the shaft 248. Similar to... Figures 35A to 35C The example illustrated in the text shows shaft 248, which includes a travel stop 3804 fixedly attached to end 3808 of shaft 248. This travel stop is, in this example, an elastic ring. However, compared to... Figures 35A to 35C The shaft 248 in this example differs from the one in that it comprises only a single stepped surface, namely stepped surface 3814. Cam 252 is movably disposed on shaft 248 between travel stop 3804 and stepped surface 3814. Figure 38B As best illustrated, bushing 3802 is coupled to shaft 248 near end 3808 (e.g., via any known means) such that bushing 3802 surrounds a portion of shaft 248. Meanwhile, as Figure 38A In the best example, a biasing element 3800 in the form of a spring is disposed in a recess 3818 of a bushing 3802, wherein one end of the biasing element 3800 is positioned against a shoulder 3820 of the bushing 3802, which helps to define the recess 3818. Thus, the biasing element 3800 surrounds a portion of the shaft 248 within (or substantially inside) the bushing 3802. The biasing element 3800 then biases the cam 252 (and more specifically, the cam surface 280) outward toward the travel stop 3804, which prevents the cam 252 from moving beyond the end 3808 of the shaft 248 (which would disengage the cam 252 from the shaft 248).

[0165] like Figures 39A to 39D As illustrated, the biasing element 3800 helps maintain engagement between the cam surface 280 and the bottom surface of the emergency cut-off spring seat (e.g., emergency cut-off spring seat 3320), regardless of whether the emergency cut-off safety device 104 is in the unactivated position. Figure 39A and Figure 39B ) or is still in the triggered position ( Figure 39C and Figure 39D For example, when the emergency shut-off safety device 104 is in the untouched position ( Figure 39A and Figure 39B When the cam surface 280 engages with the bottom surface of the emergency cut-off spring seat 3320, the cam 252 is spaced apart from the end 3808 of the shaft 248. The biasing element 3800 then biases the cam surface 280 to engage with the bottom surface of the emergency cut-off spring seat 3320. On the other hand, when the emergency cut-off safety device 104 moves to the activated position ( Figure 39C and Figure 39D When activated, the biasing element 3800 biases the cam 252 outward toward the end 3808, causing the cam surface 280 to be pushed into engagement with the bottom surface of the emergency cut-off spring seat 3320. Therefore, it should be understood that in the unactivated position, the distance between the shoulder 3820 and the lower side of the cam 252 is equal to D3, while in the activated position, the distance between the shoulder 3820 and the lower side of the cam 252 is equal to D4, where D4 is greater than D3.

[0166] In some examples, the emergency cut-off mechanism described herein may be via a single flange (e.g., Figure 40 The flange 4000 illustrated herein is coupled to the regulator body 108 of the fluid regulator 100. This single flange is coupled to and disposed between the housing 244 of the corresponding emergency shut-off mechanism and the regulator body 108. However, it should be understood that this single flange prevents the housing 244 from separating from the regulator body 108 without first opening the housing 244. Therefore, in some examples, and as shown in the illustration, Figures 41 to 52 As illustrated herein, the emergency shut-off mechanism can be coupled to the regulator body 108 of the fluid regulator 100 via a flange assembly that allows the housing 244 of the corresponding emergency shut-off mechanism to be quickly and easily coupled to or detached from the regulator body 108 without having to open the housing 244.

[0167] refer to Figures 41 to 52 A flange assembly typically includes a first flange 4108 and a second flange 4112, the second flange being configured to matingly engage the first flange 4108. For example... Figures 43 to 45As illustrated, the first flange 4108 is mounted to the regulator body 108 via a plurality of fasteners 4116, which are respectively inserted into a plurality of circumferential openings 4120 formed in the first flange 4108 and then into a plurality of corresponding openings 4124 formed in the regulator body 108. The first flange 4108 has a central opening 4128 surrounded by the plurality of circumferential openings 4120. Meanwhile, as... Figure 46 As illustrated, the second flange 4112 is mounted to the outer portion of the housing 244 via a plurality of fasteners 4130, which are respectively inserted into a plurality of circumferential openings 4132 formed in the second flange 4112 and then into a plurality of corresponding openings formed in the housing 244. However, in other examples, the second flange 4112 may be integrally formed on the outer portion of the housing 244.

[0168] Still referencing Figure 46 In this example, the second flange 4112 has an outwardly extending connector 4140, a plurality of tabs 4144 carried by the ends of the outwardly extending connector 4140, and a central opening 4148 defined by the outwardly extending connector 4140. When the second flange 4112 is coupled to the housing 244, the shaft 248 extends through the central opening 4148, such that the cam 252 and cam 280 extend outward from the second flange 4112 and the outwardly extending connector 4140 surrounds a portion of the cam 252. Thus, as Figure 44 and Figure 45 As illustrated, the central opening 4128 of the first flange 4108 has a shape and size that match the shape and size of the second flange 4112, particularly the outwardly extending connecting member 4140 and a plurality of tabs 4144.

[0169] In order to connect the housing 244 of the emergency cut-off mechanism to the regulator body 108 of the fluid regulator 100 via the flange assembly, the second flange 4112 (mounted to the housing 244) is positioned adjacent to the first flange 4108 (mounted to the regulator body 108) such that the outwardly extending connecting member 4140 and tab 4144 of the second flange 4112 are aligned with the central opening 4128 of the first flange 4108, as follows. Figure 47 and Figure 48 As illustrated. Then, the shaft 248 and cam 252 are inserted through the central opening 4128 of the first flange 4108 until (1) the peripheral edge 4152 of the second flange 4112 engages (and surrounds) the peripheral edge 4156 of the first flange 4108, and (2) the outwardly extending connecting member 4140 and tab 4144 of the second flange 4112 are inserted into the central opening 4128 of the first flange 4108, as shown. Figure 49 and Figure 50As illustrated, the outwardly extending connector 4140 and tab 4144 are then rotated (e.g., clockwise) until tab 4144 is no longer aligned with the central opening 4128 of the first flange 4108, as shown. Figure 51 and Figure 52 As illustrated. Multiple fasteners 4160 (in Figure 52 (Only one of them is shown in the image) is then inserted into a plurality of openings formed in each of peripheral edges 4152 and 4156, thereby securing the second flange 4112 in that position relative to the first flange 4108 (and securing the housing 244 to the regulator body 108). It should be understood, of course, that the housing 244 can be separated from the regulator body 108 in a similar (but reversed) manner, all without having to open the housing 244.

[0170] In some cases (e.g., for maintenance), it may be necessary to remove the actuator assembly 116 from the regulator body 108. To remove the actuator assembly 116 from the regulator body 108, multiple fasteners connecting the actuator housing 240 to the regulator 108 are removed, and the actuator assembly 116 can be lifted away from the regulator body 108. Lifting the actuator assembly 116 in this manner also lifts components of the control assembly 112 and the internal emergency cut-off assembly 200 outside the regulator body 108. However, in some cases, components of the emergency cut-off mechanism 204 may interfere with the removal of the actuator assembly 116 from the regulator body 108. For example, when removing the actuator assembly 116 from the regulator body 108, the shaft 248 and the cam surface 280 may interact with the seat 130 and the emergency cut-off control element 216.

[0171] Therefore, in some examples, any emergency cut-off mechanism described herein may be modified to include a bushing that allows the emergency cut-off mechanism to move outward (e.g., slide) away from the internal emergency cut-off assembly 200 so as to allow the actuator assembly 116, control assembly 112 and components of the internal emergency cut-off assembly 200 to be removed from the regulator body 108 without interfering with or removing the emergency cut-off mechanism. Figures 53 to 59 An example of such a bushing 5300 that can be used in conjunction with the emergency cut-off mechanism 204 for this purpose is illustrated. First, it should be understood that the bushing 5300 is removably coupled to the regulator body 108 via a plurality of fasteners (not illustrated), such that the bushing 5300 engages a portion of the regulator body 108, as... Figure 53 and Figure 54 As illustrated in the examples. Furthermore, as in... Figure 53 and Figure 54As illustrated, bushing 5300 is also removably coupled to filler box 246 at a location between housing 244 and cam 252 (and more specifically, at a location immediately adjacent to the outer portion of housing 244) via a plurality of fasteners (e.g., bolts 5304). Thus, when bushing 5300 is coupled to regulator body 108, housing 244, which is coupled to bushing 5300 via filler box 246, is spaced apart from regulator body 108 and is completely disposed outside of regulator body.

[0172] When bushing 5300 is located Figure 53 and Figure 54 In the illustrated position, bushing 5300 is fixed relative to housing 244 and stuffing box 246, and emergency shut-off safety device 104 can operate as described above. However, when it is necessary to remove actuator assembly 116 from regulator body 108, emergency shut-off mechanism 204 can be removed from... Figure 53 and Figure 54 The illustrated position is moved to Figure 55 and Figure 56 The illustrated location. For example... Figure 55 and Figure 56 As illustrated, this is achieved by removing bolts 5304 from the stuffing box 246 and bushing 5300. Subsequently, the housing 244 and stuffing box 246 can be moved outward relative to the regulator body 108, away from the regulator body 108, as... Figure 57 and Figure 58 As illustrated, the movement of the housing 244 and the stuffing box 246 in this manner also drives the cam surface 280 outward away from the seat 130 and the components of the internal emergency cut-off assembly 200, so that the emergency cut-off mechanism 204 does not interfere with the removal of the actuator assembly 116. As... Figure 59 As illustrated, for example, clearance G will now exist between cam surface 280 and seat 130. Meanwhile, bushing 5300 continues to engage regulator body 108, such that emergency cut-off mechanism 204 remains connected to regulator body 108. Conversely, when it is time to reconnect actuator assembly 116 to regulator body 108, housing 244 and stuffing box 246 can be moved inward toward regulator body 108, and bolt 5304 can again be used to secure bushing 5300 to stuffing box 246, as... Figure 53 and Figure 54 exemplified.

[0173] In some examples, shaft 248 and cam 252 (which may also be referred to herein as cam and shaft assemblies) may be modified such that an emergency cut-off mechanism employing the modified shaft and cam can be used interchangeably with multiple fluid regulators of different sizes. More specifically, shaft 248 and cam 252 may be modified to be adjustable relative to each other such that the emergency cut-off mechanism can be used interchangeably with multiple fluid regulators of different sizes. As an example, the modified shaft and cam may be configured such that an emergency cut-off mechanism employing the modified shaft and cam can be used interchangeably with: a first fluid regulator having a first size (e.g., fluid regulator 100) (e.g., 1" fluid regulator, 3" fluid regulator), a second fluid regulator having a second size larger than the first size (e.g., 1.5" fluid regulator, 4" fluid regulator, 4.5" fluid regulator), or a third fluid regulator having a third size larger than both the first and second sizes (e.g., 2" fluid regulator, 2.5" fluid regulator, 5" fluid regulator, 6" fluid regulator).

[0174] Figure 60 and Figure 61 An example of such a modified shaft 6048 and modified cam 6052 is shown. Figure 60 As illustrated, shaft 6048 typically includes a plurality of holes corresponding to different positions of cam 6052 relative to shaft 6048 to accommodate fluid regulators of different sizes. In this example, shaft 6048 includes three threaded holes 6056A, 6056B, and 6056C formed in an end portion 6060 of shaft 6048, wherein each threaded hole 6056A-6056C corresponds to a fluid regulator of a different size. In this example, the first threaded hole 6056A corresponds to a first fluid regulator (having a first size), the second threaded hole 6056B corresponds to a second fluid regulator (having a second size), and the third threaded hole 6056C corresponds to a third fluid regulator (having a third size). The three threaded holes 6056A-6056C are circumferentially spaced around the end portion 6060 of shaft 6048. However, in other examples, shaft 6048 may include more or fewer holes, such that shaft 6048 can accommodate different numbers of fluid regulators of different sizes. Furthermore, in other examples, the hole does not need to be threaded.

[0175] At the same time, such as Figure 61As illustrated, cam 6052 typically includes a cam body 6064 having an opening 6068, and a cam surface 6080 projecting outward from the cam body 6064 and structurally and functionally identical to the aforementioned cam surface 280. Therefore, cam surface 6080 is also adapted to be operatively connected to an emergency cut-off control element 216 (via an emergency cut-off spring seat 220). Opening 6068 is typically defined by a central opening 6072 and a plurality of semi-circular cutouts surrounding the central opening 6072. In this example, opening 6068 includes three semi-circular cutouts 6076A-6076C, each corresponding to a different sized fluid regulator and arranged to be substantially aligned with a corresponding one of the three threaded holes 6056A-6056C when cam 6052 is coupled to shaft 6048. Therefore, in this example, the first semicircular cutout 6076A corresponds to the first fluid regulator (having a first size), the second semicircular cutout 6076B corresponds to the second fluid regulator (having a second size), and the third semicircular cutout 6076C corresponds to the third fluid regulator (having a third size). However, in other examples, the opening 6068 may be defined by different arrangements of openings (e.g., fewer or more than three semicircular cutouts).

[0176] Generally, it should be understood that the cam 6052 can be connected to the shaft 6048 by setting the end 6060 of the shaft 6048 in the central opening 6072, and depending on the size of the shaft 6048 and the fluid regulator in which the cam 6052 will be housed, the semi-circular cutouts 6076A-6076C corresponding to the size of the fluid regulator are aligned with the corresponding threaded holes 6056A-6056C. Subsequently, a fastener 6084 (which is threaded in this example) is inserted into the desired semi-circular cutouts 6076A-6076C and the corresponding threaded holes 6056A-6056C.

[0177] For example, when the emergency cut-off mechanism employing shaft 6048 and cam 6052 is used in conjunction with a first fluid regulator (having a first size), cam 6052 is configured (or reconfigured) relative to shaft 6048 in a first position. In this first position, the first semi-circular notch 6076A is aligned with the first threaded hole 6056A, and a fastener 6084 is inserted into the first semi-circular notch 6076A and the first threaded hole 6056A, as... Figure 62As illustrated. Subsequently, the center of the cam surface 6080 is spaced apart from the center of the shaft 6048 by a first height H1. It should be understood that the height H1 is equal to the height by which the cam surface 6080 descends (or ascends) when the emergency cut-off control element 216 moves from the fully open position to the closed position (and vice versa) in the first fluid regulator. Furthermore, the second semi-circular notch 6076B and the third semi-circular notch 6076C are generally not aligned with the second threaded hole 6056B and the third threaded hole 6056C, respectively. Additionally, the cam surface 6080 is oriented at a first angle θ1 relative to the transverse axis B of the shaft 6048. It should be understood that the first angle θ1 is related to the amount of rotation experienced by the shaft 6048 and the cam surface 6080 when the emergency cut-off control element 216 moves from the fully open position to the closed position (and vice versa) in the first fluid regulator. Figure 62 In the illustrated example, the first fluid regulator is a 1" fluid regulator such that the first height H1 is equal to 7.5 inches and the first angle θ1 is equal to approximately 59.6 degrees, because when the emergency cut-off control element 216 moves from the fully open position to the closed position (and vice versa) in the first fluid regulator, the shaft 6048 and the cam surface 6080 rotate approximately 30.4 degrees.

[0178] However, when the emergency cut-off mechanism employing shaft 6048 and cam 6052 is used in conjunction with a second fluid regulator (having a second size larger than the first size), cam 6052 is configured (or reconfigurable to) a second position relative to shaft 6048 for use with the larger second fluid regulator. In this second position, the second semi-circular notch 6076B is aligned with the second threaded hole 6056B, and fastener 6084 is inserted into the second semi-circular notch 6076B and the second threaded hole 6056B, as... Figure 63 As illustrated. Subsequently, the center of the cam surface 6080 is spaced a second height H2 from the center of the shaft 6048. It should be understood that the height H2 is equal to the height by which the cam surface 6080 descends (or ascends) when the emergency cut-off control element 216 moves from the fully open position to the closed position (and vice versa) in the second fluid regulator. Furthermore, the first semi-circular notch 6076A and the third semi-circular notch 6076C are generally not aligned with the first threaded hole 6056A and the third threaded hole 6056C, respectively. Furthermore, the cam surface 6080 is oriented at a second angle θ2 relative to the transverse axis B of the shaft 6048. It should be understood that the second angle θ2 is related to the amount of rotation experienced by the shaft 6048 and the cam surface 6080 when the emergency cut-off control element 216 moves from the fully open position to the closed position (and vice versa) in the second fluid regulator. Figure 63In the illustrated example, the second fluid regulator is a 1.5" fluid regulator, such that the second height H2 is equal to 10.5 inches and the second angle θ2 is equal to approximately 45.1 degrees, because when the emergency cut-off control element 216 moves from the fully open position to the closed position (and vice versa), the shaft 6048 and the cam surface 6080 rotate approximately 44.9 degrees. Therefore, the second height H2 is greater than the first height and the second angle θ2 is less than the first angle, consistent with the fact that in the second fluid regulator, the emergency cut-off control element 216 has a greater stroke length than the emergency cut-off control element 216 in the first fluid regulator.

[0179] On the other hand, when the emergency cut-off mechanism employing shaft 6048 and cam 6052 is used in conjunction with a third fluid regulator (having a third size larger than the first and second sizes), cam 6052 is configured (or reconfigurable to) a third position relative to shaft 6048 for use with the larger third fluid regulator. In this third position, the third semi-circular notch 6076C is aligned with the third threaded hole 6056C, and fastener 6084 is inserted into the third semi-circular notch 6076C and the third threaded hole 6056C, as... Figure 64 As illustrated. Subsequently, the center of the cam surface 6080 is spaced a third height H3 from the center of the shaft 6048. It should be understood that the height H3 is equal to the height by which the cam surface 6080 descends (or ascends) when the emergency cut-off control element 216 moves from a fully open position to a closed position (and vice versa) in the third fluid regulator. Furthermore, the first semi-circular notch 6076A and the second semi-circular notch 6076B are generally not aligned with the first threaded hole 6056A and the second threaded hole 6056B, respectively. Additionally, the cam surface 6080 is oriented at a third angle θ3 relative to the transverse axis B of the shaft 6048. It should be understood that the third angle θ3 is related to the amount of rotation experienced by the shaft 6048 and the cam surface 6080 when the emergency cut-off control element 216 moves from a fully open position to a closed position (and vice versa) in the third fluid regulator. Figure 64 In the illustrated example, the third fluid regulator is a 2" or 2.5" fluid regulator, such that the third height H3 is equal to 12.5 inches and the third angle θ3 is equal to approximately 33.1 degrees, because when the emergency cut-off control element 216 moves from the fully open position to the closed position (and vice versa) in the third regulator, the shaft 6048 and the cam surface 6080 rotate approximately 56.9 degrees. Therefore, the third height H3 is greater than the first and second heights and the third angle θ3 is smaller than the first and second angles, consistent with the fact that the emergency cut-off control element 216 in the third fluid regulator has a greater stroke length than the emergency cut-off control element 216 in the first and second fluid regulators.

[0180] It should be understood that cam 6052 can be reconfigured any number of times relative to shaft 248 between a first position, a second position, and a third position. For example, cam 6052 can be configured in a first position for a first fluid regulator and then reconfigured to a second position for a second fluid regulator. For this purpose, depending on the position of cam 6052, fastener 6084 can be removed from the first semi-circular notch 6076A, the second semi-circular notch 6076B, or the third semi-circular notch 6076C, and the first threaded hole 6056A, the second threaded hole 6056B, or the third threaded hole 6056C. Cam 6052 can then be repositioned as needed, and depending on the desired new position of cam 6052, fastener 6084 is disposed in the first semi-circular notch 6076A, the second semi-circular notch 6076B, or the third semi-circular notch 6076C, and the first threaded hole 6056A, the second threaded hole 6056B, or the third threaded hole 6056C.

[0181] Finally, it should be understood that any of the examples described herein can be combined in any number of different ways. As an example, combining... Figures 60 to 64 The described cam and shaft assembly has a combination Figure 30 The components and combinations described Figure 31 and 32 The described components, in conjunction with Figures 35 to 36 Figure 37 The described components or combinations Figures 41 to 46 The components described. As will be understood by those skilled in the art, other combinations are also possible.

Claims

1. An emergency cut-off mechanism (204) for operatively connecting an emergency cut-off control element (216) of a fluid regulator (100) to a controller (208) for the emergency cut-off control element, the emergency cut-off mechanism comprising: Axis (248); Cam (252), the cam being carried by the bearing, the cam having a cam surface (280) adapted to be operatively connected to the emergency cut-off control element; A latching pin (256), the latching pin being carried by the bearing; Latch (260); and A lever (264), operably connected to the latch, the lever being adapted to be selectively engaged by the controller. In response to the controller engaging the lever, the latch can move from a first position to a second position. In the first position, the latch securely holds the latch pin such that the cam surface is arranged to hold the emergency cut-off control element in the fully open position. In the second position, the latch pin is released from the latch, thereby allowing the emergency cut-off control element to move from the fully open position to the closed position.

2. The emergency cut-off mechanism (204) according to claim 1, further comprising: A housing (244) adapted to be coupled to the regulator body (108) of the fluid regulator (100); wherein the shaft (248) extends through an opening formed in the housing; wherein the cam (252) is carried by the shaft at a location outside the housing; wherein the latch (260) is pivotally coupled to the housing; and wherein the lever (264) is pivotally coupled to the housing.

3. The emergency cut-off mechanism (204) according to any one of the preceding claims, wherein the latch pin (256) has a first contact surface (282) and the latch (260) has a second contact surface (288), the second contact surface being configured to engage the first contact surface when the latch is in the first position, and wherein the second contact surface is oriented at an angle relative to the axis of the latch pin.

4. The emergency cut-off mechanism (204) according to any one of the preceding claims further includes a second lever (308) operatively connected to the lever (264) and the latch (260), wherein the second lever is configured to pivot together with the lever.

5. The emergency cut-off mechanism (204) according to claim 4, wherein the second lever (308) includes a pin that engages an inclined surface (316) of the latch (260) when the latch moves from the first position to the second position.

6. The emergency cut-off mechanism (204) according to any one of the preceding claims further includes a spring (3000) configured to apply a compressive force on the latch, wherein the spring is adjustable to adjust the compressive force applied to the latch.

7. The emergency cut-off mechanism (204) according to any one of the preceding claims, wherein the movement of the latch (260) from the first position to the second position allows the shaft (248) to rotate to a closed position in a first direction, and wherein when the shaft is in the closed position, rotation of the shaft in a second direction opposite to the first direction causes the latch to move from the second position to the first position.

8. The emergency cutting mechanism (204) according to any one of the preceding claims, wherein the cam (252) is reconfigurable relative to the shaft (248) to adjust the angle between the cam surface (280) and the transverse axis (B) of the shaft.

9. The emergency cut-off mechanism (204) according to claim 7, wherein rotation of the shaft (248) in the second direction causes the latch pin (256) to engage the first vertex (294) of the lever (264), and wherein engagement of the latch pin (256) with the first vertex causes the second vertex (296) of the lever to rotate to engage with the controller (208), thereby causing the latch to move to the first position.

10. A fluid regulator (100), comprising: A regulator body (108) having an inlet (120), an outlet (124) and a flow path (128) extending between the inlet and the outlet, the regulator body including a seat (130) surrounding an orifice (132) in the flow path; An emergency cut-off control element (216) is disposed within the regulator body and is movable between a fully open position and a closed position. In the fully open position, the emergency cut-off control element is spaced apart from the seat, and in the closed position, the emergency cut-off control element is positioned against the seat. A controller (208) is configured to move the emergency cut-off control element between the fully open position and the closed position, the controller being coupled to a first part (1606) of the regulator body; and According to claim 1, the emergency cutting-off mechanism (204) The movement of the latch (260) from the first position to the second position allows the emergency cut-off control element to move from the fully open position to the closed position.

11. The fluid regulator (100) of claim 10, wherein the controller (208) is removable from the first portion (1606) of the regulator body (108) and is connectable to a second portion (1610) of the regulator body.

12. The fluid regulator (100) of claim 10 further includes a first flange (4108) mounted to the regulator body (108) and a second flange (4112) mounted to the emergency cut-off mechanism (204), wherein the second flange is configured to engage the first flange to connect the emergency cut-off mechanism to the regulator body.

13. The fluid regulator (100) according to claim 10, wherein the emergency cut-off mechanism (204) is slidable relative to the regulator body (108) such that the emergency cut-off control element (216) can be removed from the regulator body (108) without being disturbed by the emergency cut-off mechanism.

14. The fluid regulator (100) according to claim 10, further comprising: Spring seat (220); and A spring (240) is disposed between the emergency cut-off control element (216) and the spring seat, the spring being configured to bias the emergency cut-off control element away from the spring seat. When the emergency cut-off control element moves from the fully open position to the closed position, the cam surface (280) engages the spring seat.

15. The fluid regulator (100) of claim 10, wherein the cam (252) is reconfigurable relative to the shaft (248) to adjust the angle between the cam surface (280) and the transverse axis (B) of the shaft.

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