CA2428072C - Fluid flow management system - Google Patents

Abstract

A fluid flow management system that includes a feedback system in communication with a fluid system component having discrete elements that, when joined together, define a joint and chamber. The fluid flow management system further includes a feedback fluid source in fluid communication with the chamber and with a pressure transducer. The feedback fluid source, transducer, and chamber collectively define a substantially closed system so that fluid introduced by the feedback fluid source eventually reaches static equilibrium. Separation of, or relative movement between, the discrete elements of the fluid system components permits fluid to escape the chamber, thereby causing a pressure change that is detected by the pressure transducer. The pressure transducer then generates and transmits a signal indicating a loss of joint integrity. The signal may be used to aid in the implementation of various actions concerning the system wherein the fluid system component is employed.

Description

FLUID FLUW N1ANAC~EMENT SYSTEM
BACKGRU Ci htU
Technolosical Field The present invention relates genertrlly to fluid systems. Mare particularly, embodiments of the present invention relate to a fluid flow management system that includes a dry break valve assembly which automatically terminates flow in the event constituent portions of the dry break valve assembly are separated far any reason. The fluid flow management system also includes a feedback system that, among other things, facilitates both the monitoring of the integrity of orw c:~r more .joints of the dry break valve assembly, as well as the implementation of varioxrs actions corresponding to the data obtained as a result of such monitoring.
Related Technology In recent years, eravironxnental concerts have been receiving significantly more attention, and various governmental agencies have r~;spaxrded by implementing stringent regulations to reduce or prevent pollution. Many of° these regulations and concerns are directed towards those industries that transport fluids. 1~~or example, it is very difficult to transport a fluid without spilling or leaking son ~e of tlxe tlrrid into the environment. Thus, Page l some environmental regulations require that minimal leaking occur during handling, processing, or transportation of the fluid.
These environmental concerns become especially clear when considering the magnitude of the industries that handle hazardous fluids that, if allowed to escape even in relatively small quantities, c:an cause significant damage. There is a concern, therefore, to protect both the public and the environment from tlmse types of fluids. While some fluids that are transported, such as water and milk, may not pollute the environment when they are leaked or spilled, the loss of fluid into the environment is nevertheless viewed as a general waste of resources. More generally, the loss of fluid into the environment is not desirable even if the fluid does not contribute to pollution.
Within the transportation industry, a varioay of~clifferec3t devices are used to transport a fluid from a source to a destination. These dev ices i>fterr use valve assemblies and conduits of various types to both connect the source to the destination as well as to manage fluid flow through the conduit. 'Cypically, the conduit is pressurized to direct fluid toward the desired destination. With each transfer of fluid, there is a risk that leakage will occur due to human error, equipment malfunctions, or the hke.
A Gammon source of fluid leaks and fluid spills are the ~lalves and other components and devices employed in fluid systems. k3y way of example, some valves may have leaks that permit flow through the valve even when the valve is secured in the closed position. In other instances, one or more joints defined lay constituent c°,lements of the valve, such as in the case of valves designed to be taken down in two or more pieces, andlor one or more joints at least partially defined by the valve, such as a valve-to-flange connection, may be defective, resulting in leakage of some car all of the system fluid.
IJnforiunately, problems P age such as these often do not manifest themselves tmtil after flow has been established through the valve, component, or device.
Thus, in many instances, the system operator is limited in teens of the affirmative steps that can be taken to prevent a spill that may result frt~n~ one or mare defective joints, and oftentimes can only correct the spill when it occurs. 'this is true in the c.°ase of joints that are defectively assembled, or are otherwise defective upon assembly, as well as in the case of joints that become defective over a period of time due to rlperating, or other, conditions.
Other problems exist as well. For example, various t~,~res of valves have been designed to stop, or "check," fluid flow through the valve wheel the valve is taken down into two or more constituent parts or assemblies. C)ne known device for checking fluid flow is a ball check valve. A ball check valve is essentially a bald which rests against a ball seat to form a valve. An operator may use the ball check valve t:o initiate or terminate the fluid flow.
Despite the check feature of the ball chock valve, a problem exists in the;
integrity of the fluid transfer system when the valve or conduit undcrgc~os stress.
When the conduit and the valve are subjected to forces such as stretching, pulling, twisting, and the like, the fluid being transferred through the conduit and the valve may leak or spill into the environment. More particularly, t11~° canduit, rather than the ball check valve, is likely to rupture or otherwise walfunction in the presence of these forces. Thus, while the ball check valve is appropriate for claecki~~g fluid flow, it does not: prevent spillage or leakage when subjected to external stress. f3ecauso the conduit is likely to rupture, or otherwise malfunction, in these types of si uations, the spillage or leakage of fluid into the environment can be significant because the fluid flow can n<7 langer be checked.
For example, when a fuel transport vehicle is delivering liduid through a hose into a fuel tank, one end of the hose is attached to the fool transport vehicle, and the other end of the hose is attached to a fuel tank. A valve such as a ball check valve may be disposed at the vehicle end of the hose such that fluid communication through the hose may be established or checked.
In the event the fuel transport vehicle drives away with the hose still connected, the connection will likely break or rupture. Because the hose is typically the werakest part of the connection, the break usually occurs somewhere iti the hose and fluid escapes into the environment. In this example, the ball check valve typically does not disassemble because it is much stronger than the hose. )~Vt;n if the ball check valve were to bre~xk instead of the hose, fluid would still leak from the system. Such problerz~s are particularly acute in the context of automated environments and operations ~evhere few, or no, humans may be present, and a leak may go unnoticed for a relatively lorng period of time.
Accordingly, what is needed is a fluid flow management system having features directed to addressing the foregoing exemplary consideratiocls, as well as other considerations not disclosed herein. An c~~c~mplary fluid flow management system includes a dry break valve assembly that automatically disassenablcs when excessive;
force is applied to the system to which the dry break valve assembly is conryected. Moreover, the dry break valve assembly should be constructed to aut~:~rnatic4rlly terminate flow at substantially the same time as such disassembly occurs. Finally, the fluid 1'low management system should allow an operator to monitor the integrity oh one or more cof~ the dry break valve assembly joints, and to implement appropriate actions conc~c7~ing the system in conjunction with which the fluid flow management system is enxplayed, in the event such integrity is compromised.
Page ~.

BRIEF SUMMARY OF AN E~EMPI,A~i:Y EMBI~I)~MEN'T OF 'THE INVENTION
In general, embodiment; of the ir~ventiort arc concerned with a fluid flow management system that, among other things, facilitates control of fluids before, during, and after transfer.
In one exemplary embodiment of' tlae invention, a fluid flow management system is provided that includes a dry break valve assembly lrav~ng first and second housing portions removably joined to each other and configured so that, when joined together, they collectively define a chamber. A flow control assembly is disposed in cac:h of the first and second housing portions and each of the flow control assemblies are operably connected with an actuating mechanism which permits the sirnuttaneous opening, and closing, of the flow control assemblies so as to permit, ~>r prevent, respectively, flow through the dry break valve assembly. The dry break valve assembly is also configured so that upon separation of the first and second housing portions, the flow control assemblies each automatically assume a "closed" configuration, thereby preventing further fluid flow.
Additionally, the fluid flow management system irncludes a feedback system that among other things, facilitates both the monit:or-ing of the integrity of one car more joints of the dry break valve assembly, as well as the tmhlementation of various actions cUrresponding to the data obtained as a result of such monitoring. One exemplary embodiment of the feedback system includes a feedback system fluid source configured for communication with the chamber by way of°a sensor lisle, as well as a pressure transducer in fluid communication with the sensor line, atad a processor irr electronic communication with the pressure transducer.
In this exemplary embodiment, the feedback system fluid source introduces fluid into the chamber and the pressure transducer until the chamber and pressure transducer are Page S

in static equilibrium with the feedback system fluid source. Because the chamber is formed proximate to the joint defined by the first and second housing portions, a relative movement between, or separation of; the first and s~crand lousing portions, will permit at least some of the pressurized feedback system fluid to cescape.
In operation, a separation of the first and second housing portions causes the flow control assemblies to automatical iy assume the "c losed" position, thereby preventing further fluid flow through the dry break valve assembly. At s~tbsta~~tially the same tune, separation of the first and second housing portions causes fluid to escape from the chamber, thereby upsetting the static equilibrium of the pressurized feedback system fluid.
This disruption of the static equilibrium results in a pressure change that causes the pressure transducer to generate and transmit a corresponding signal whiclx rrray then be employed to cause various actions to be taken respecting the system in conjunction with which the fluid flow management system is employed. In o~~e exeimhlary embadiment, a processor in communication with the pressure transducer causes a visual and audible warning signal to be generated, indicating that the first and second housing portions have separated.
These and other, aspects of embodiments of the present invention will become more fully apparent from the following description a~ud appended claims.
f age Ci BRIEF DESCI~IP'TI4N OF 'THE DRAWINGS
A mare particul~~r description of vaa-iaus aspecta of the embodiments of the invention illustrated in the appended drawings wili now fe rendered. Understanding that such drawings depict only exemplary embodiments of the inventian, and are nat therefore to be considered limiting of the scope al~ the invention in any way, various leat:ures of such exemplary embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:
Figure 1 depicts an exemplary operating ~nvirornnent far at least sane embodiments of the present invention;
Figure 2 is a perspective view of an ezaabodiment of the dry break: valve assembly which includes a source housing and a destination housing that can be releasably connected to each other using a sleeve;
Figure 3 depicts an embodiment of° a sleeve which releasably seals and connects a source housing with a destination housing;
Figure 4 is a perspective view indicating various details of a breakable link assembly that is an integral portion of a collar;
Figure 5 is a perspective cutaway view of an embodiment of the prese;nt invention, illustrating various features of an actuating mechanism;
Figure 6 is a cross section vic;w of an exemplary sealing interface within an embodiment of a dry break valve assembly;
Figure 7 is a perspective view illustrating various features of an exemplary embodiment of an actuating mechanism diseased within an embodiment. of' a dry break valve assembly;
Page, Figure 7A is a side view illustrating various f~.atures of an embodiment of an actuating mechanism positioned so as to allow fluid flow through the dry break valve assembly;
Figure 7B is a side view illustrating various features of an embodiment of an actuating mechanism positioned so as to substantially prevent fluid flow through the dry break valve assembly;
Figure 8 is a schematic view that illustrates vac°ious features of an embodiment of a feedback system;
Figure 8A is a schematic view of selected asp9";cts of an alternative embodiment of the feedback system illustrated in Figure ?3;
Figure 8B is a schematic view of selected aspects <:~f another alternative embodiment of"the feedback systems illustrated in Figures 8 and 8A, respectively;
Figure 9A is a cutaway view of an embodi~taent ofd an exemplary fluid system component, specifically a dry break valve assembly, configured for use with a feedback system;
Figure 9B is a cutaway view of an alternative; embodiment of an exemplary fluid system component, specifically a dry l7reak valve assembly, configured for use with a feedback system;
Figure 10 is a schematic view of an embodiment of' a Feedback system employed in conjunction with a control system;
Figure 11 is a schematic view of an umbodimer~t of a feedback system configured to generate line fluid leakage data; and Figure 12 is a schematic view of art alternative, embodiment of a feedback system configured to generate line fluid leakage data"
Page ~3 DETAILED DESCRIPTION OF VAR1O~S EMBODIMENTS OF THE INVENTION
Reference will now be made to figures wherein like structures will be provided with like reference designations. It is to be understc>od that the drawings are diaguammatic and schematic representations of various embodiments c>f the invention, and are not to be construed as limiting the present invention, nor are the drawings necessarily drawn to scale.
With reference first to Figure 1. orre embodiment cai a fluid transfer systerr~ is indicated generally at 100. Note that, as contemplated herein, "fluid'" includes liquids, gases, liquid-gas combinations, slurries, liquid-solid corrrbinations, gas-solid combinations, and liquid-solid-gas combinations. In the exemplary enibodimerrt depicted in Figure 1, fluid transfer system 100 includes a fluid source 1()2 configured for fluid communication with a dry break valve assembly 200. Dry break valve assembly °?0(t, in turn, is configured for selective fluid communication with a fluid destination 1 C)4, by way of a tluid conduit 106.
As discussed elsewhere herein, it will be appreciated that dry break valve assembly 200 may be located, in its entirety, at fluid source I t)',~, or alternatively at fluid destination 104. In one embodiment, discussed in detail below, clry break valve assembly comprises at least two discrete portions, one of which may be located at fluid source 102, and the other of which may be located at fluid conduit 106, or vice versa in a fluid loading situation.
As contemplated herein, the term '"conduit" is meant to include any structure or device adapted to facilitate transportatiejn ~~f a l7uid, wherein such structures and devices include, but are not limited to, pipes, hoses, tubes, or the like. Fluid conduit 106 may be constructed of a variety of materials, or combinations thereof; including, but not limited to, metal, plastic, rubber, and the like.
Page t) With continuing reference to figure l, the ftuid source 102 is illustrated as a fluid transport vehicle, and the tluid destination 1 ()4 is illustrated as an underground tank.
However it will be appreciated that fluid source 10~' and/or fluid destination 104, may comprise any of a variety of different static or nrrobile structures and vehicles. Such structures and vehicles include, but are riot limited to, air, ~avater, or land vehicles, such as, but not limited to, trucks, boats, acttomobiles, motorcycles, ships, railcars, aircraft, and the like, as well as structures such as tanks, reservoirs, and t1e like.
In operation, a pressure differential is established between fluid source 102 and fluid destination 104 so as to cause flow of the fluid through fluid conduit 1 C)6 in the desired direction. Lt will be appreciated that the pressure differential may be established in such a way as to cause flow to proceed in the opposite direction as well. "The pressure differential may result lxom the force of gravity, or r~iay alternatively b~ established by various types of equipment and devices including, but riot limited to, pumps and the like.
In general, dry break valve assembly 2Ci() facilitates management and control of fluid flow between fluid source 102 and fluid destination 1 ()4. Ira particular, valve assembly 200 allows for selective est:ablishmerrt and termination of l7uicl communication between fluid source 102 and fluid destination 1 ()4. Additionally, dry break valve assembly 200 facilitates releasable engagement of two different fluid system components, for example, fluid conduit 106 and fluid source 102. 1~inally, dry break valve assembly 200 includes various features which substantially prevent fluid leakage should the discrete portions of dry break valve assembly 200 be separated for any reason.
With reference now to Figure 2, dry break valve assembly 200 includes a first housing portion 202 and second housing portion 2()4. As used herein, the portion of the valve assembly closest to the fluid source is referred to as the source housing while the other housing portion is referred to as tlae destination portion. Either portion of the dry break valve assembly can be the source housing or the destir~akion housing.
C'.ouplirrg 500 serves to removably secure first housing portion 2()2 and second housing portion 204 in a substantially leakproof engagement.
Substantially disposed within first housing portion 2(>2 and second housing portion 204, respectively, are flow control assemblies 30t)A and 300B. Ln general, flow control assemblies 30UA and 300B facilitate management of fhrid flow through conduits, or the like, connected to first housing portion 202 and second housing portion 204, respectively. Also disposed within first housing portion 202, and discrzssed in greater detail below, is an actuating mechanism (not shown in Figure 2), which servers to manipulate; the position of flow control assemblies 30()A and 3i)OB in reaponle tea input provided by way of actuating lever 402. Thus, the position of the flow control assemblies 300A and 300B may vary between fully open and fully closed.
First housing portion 202 includes a conduit connector 202A. Conduit connector 202A is configured to attach to fluid conduit 106 shown in Figure 1 ), wherein such attachment rnay be accomplished in a variety c~f ways incluGling, but not limited to, welding, brazing, soldering, and the like. Alten~atively, conclrait connector 202A tnay comprise a compression fitting, threaded fitting, or the like for attaching to fluid conduit 106.
In similar fashion, second hauling portion 204 lras a conduit connector 204A.
Conduit connector 204A is configured to attach tea fluid conduit lOf>, wherein such attachment may be accomplished in a variety of ways including, but not lirTri ed to, welding, brazing, soldering, and the like. Alten~ra.tively, conduit c<:mnector 204A may comprise a compression fitting, threaded fitting, or the like fiar attaching tc~ fluid conduit 106. It will be Page t I

appreciated that conduit: connector 202A andior conduit connector 204A may, alternatively, be connected directly to fluid source 102 or t'luid destination 10~G.
Directing attention now to 1~igur~: 3, and with continuing attention to Figure

2, additional details regarding coupling 50C) are provid~,d. As indicated in Figure 3, coupling 5(70 includes a first engaging poa~tion 500A and a second engaging portion SOOB joined together by collar 502 which serves to slabstantially prevent relative motion between first engaging portion 500A and a second engaging portion 5()0B. Preferably, first engaging portion 500,A and a second engaging poa-tion 5()0B each c:onaprise an outward extending annular ridge or the like which, when brought into a confronting relation wil:h each other, are collectively configured to mate with corresponding structure defined by collar 502, as suggested in Figure 3. It will be appreciated h owever, that coupling 500 and collar 502, either individually or collectively, may be configured in any number of alternate ways that would facilitate achievement of the functionality disclosed herein. In addition the connecting portions of the engaging portions SODA anil 50t)8 may be ridged to ensure that relative motion between the portions does not occur.
In one embodiment, fast engaging portioal 54)0A and a second engaging portion 5008 each further includes a plurality c~f~ pins 504 that mate with corresponding grooves 2()28 and 2048, defined by first housing portion '202 <cnd second housing portion 204, respectively. Thus, a rotary motion imparted to coupling 500 by way of handles releasably joins first engaging portion S00A and a second engaging portion 5008 to first housing portion 202 and second housing portioaa 204, respectively, by causing pins 504 to travel to the respective ends of grooves 202B and 2(:)4B. Preferably, grooves 2028 and 2048 are of such a length that a rotary motion of about 90 degrees is adequate to releasably couple first housing portion 202 to second hol0.sirag pc>rtion 104. It will be appreciated that a 0.'slge 12 rotary motion of about 120 degrees in tl~e opposite direction will be effective to disengage coupling 500 and thus release first housing portion 2(:12 from second housing portion 204.
It will be appreciated that the arrangement of cavpling 500 with respect to first housing portion 202 and second housing portion 204 may b4 varied in a number of ways.
Far example, in one embodiment, Frst engaging parkion 500A is integral with first housing portion 202, so that only second engaging portion 500B comprises pins 504.
Correspondingly, only grooves 204B are present and grooves 202B are not required. In this embodiment, a rotation, preferably abut 12() degrees, unparted to coupling 5170 by way of handles 506 causes rotating pins 504, aa- bearings ix~ another embodiment, to travel the length of grooves 204B so that coupling 500 thereby releasably joins first housing portion 202 to second housing portion 204.
Yet another embodiment employs essentially a reverse configuration of that just discussed. In particular, in this embodiment, second engaging portion 50UI3 is integral with second housing portion 204, and only first engaging portion 500A includes pins 504.
Correspondingly, only grooves 2C12B are present and groavc 204B are not required. In this embodiment, a rotation, preferably about ~.1() degrees, imparted to coupling;
500 by way of handles 506 causes pins 504 to travel the length of grooves 2028 so that coupling 500 thereby releasably joins first housing portion 2012 to second housing portion ~?04.
Finally, it will be appreciated that other typc;s af' structure and devices may be usefully employed to achieve the functionality coliective.ly provided by pins 504 and grooves 202B and 204B. Accordingly, other structures and devices that provide such functionality are contemplated as being within the scope of the present invention, wherein such other structures and devices include, but are not limited to, threaded connections, spring-biased connections, and the like.

Directing attention now to Figure 4, and with continuing attention to Figure

3, additional details regarding collar 502 of coupling S00 are provided. In particular, collar 502 further includes a breakable link assembly 6U0. Generally, breakable link assembly 600 serves two primary purposes. First, breakable link assembly 6()0 serves to retain collar 502 securely in place about fast engaging portion 500A acrd second engaging portion SOOB of collar 502. Further, breakable link assembly f~00 includes a sacrificial element that is designed to break, thereby allowing first engaging portion SODA and second engaging portion 5008 to separate from each other, when a force, or forces, of predetermined magnitude are applied to particular elements at fluid transfer system 100, such as to valve assembly 200, or to fluid conduit 106.
In effect, when the sacrificial element breaks, then the coupling 500 is no longer capable of joining the first and second housings of tlae valve assembly and the valve assembly disassembles into two separate components. As previously described, fluid flow from each separate housing may be checked ar~r~ when Ll7e valve assembly separates in this manner, fluid flow is checked and fluid spillage or leakage is thereby minimized.
As suggested in Figure 4, collac° 5()2 is esserstially C:-shaped, having an opening between its two ends. Breakahle link assembly 60() is disposed across i:he opening thus defined and includes a threaded member 602, such as a bolt or the like, defining a bore (not shown) near one end. Preferably., the bore tlws detinecl is substantially perpendicular to the longitudinal axis of threaded member 602. A Shear pixy 604 is slidably disposed in the bore and the opposing ends of shear pin 604 are received irr collar 502 as indicated. Preferably, shear pin 604 is prevented from exiting the bare by way of cotter pins (i06, or the like, disposed at either end of shear pin 604. It will be appreciated that shear pin 604 may I age 14 alternatively be glued, welded, brazed, or catherwise bonded to collar 502 so as to prevent it from exiting the bore in threaded member f~()2.
Breakable link assembly 60() further includes a nut 608, or the like, engaged for advancement along threaded mernbea~ 602. In operation, rout 608 is rotated so as to advance along threaded member 602 and thus draw the opposing ends of collar 502 securely together.
The operation of breakable link assembly 600 lrro~ceeds generally a;a follows.
In the event a force, or forces, of predetermined magnitude in either a tensile or axial load are applied to valve assembly 200 and/or to fluid coavduit 1 C16, shear pin 604 will fracture and the valve assembly will disassemble. I will be appreciated that the materials and/or geometry of shear pin 604 may desirably he varied to adjust the point at which fracture will occur. It will further be appreciated that sacrificial elements other than shear pin 604 may usefully be employed. In genera(, any sacrificial element and/or breakable link assembly that provides the functionality, disclosed herein, of shear pin 604 and/or breakable link assembly 600 is contemplated as being within the scolaes of tlae present invention.
Upon fracture of shear pin f>04, threaded member separates from collar 502, thus permitting the ends of collar 502 ~o move apart and thereby allow separation of first housing portion 202 and second housing portion 2()4. The functionality provided by breakable link assembly 6()0 thus ensures that in the event a predetor~nined level of force is applied to dry break valve assembly 200, or to components to which it is connected, dry break valve assembly 200 will break dry, and thus substantially prevent any material leakage of fluid.
Further, breakable link assembly 600 substantially ensures that in the event such forces are applied, no material damage occurs to the components oiY fluid transfer system 100 (see Figure 1). Thus, in addition to xz~inimizing the fluid loss that would otherwise occur, the conduit 106 is preserved and damage is not done to the l7uid source or the fluid destination.
Note that a variety of moans may be profitably o.mployed to perform the functions enumerated herein, of sealingly engaging first housi~ag 204 with second housing 206 using coupler 500. Coupler SOU is an example of~ means far sealingly engagizig first housing pardon 202 and second housing portion 2()4. <Acc;ardingly, the structure disclosed herein simply represents one embodiment of 4wtructure capable of performing this function. It should be understood that this structure is presented solely by way of example and should not be construed as limiting the scope of the present invention in any way.
The valve assembly 200 and its various parts tnay be made of a range of materials depending on the type of fluid being transferred. Prolerably, a material is chosen that can withstand corrosion and high temperature thermal cycling, such as carbon steel or stainless steel. Generally, valve assembly 20U may be constructed tram Austenitic steel.
Figure S shows an exploded perspective view c~f various features of the flow control assemblies of valve assembly 20i). ~Tho followic~g description of the housing configuration and flow control assemblies is by illustration only and xlot by way of limitation. Generally, flow control assembly 300A may comprise a flaw central member 3U2A, a guide 322A, a resilient member 344A, a fitting member 34~, and a snap ring 3fi4A. Similarly, flow control assembly 300B may comprise a flaw control member 3028, a guide 3228, a resilient member 3448, a sealing member 350, and a snap ring ~fi4B.
Flow control assemblies 300A and 304B have a flcaw coatral member 302A and 302B, respectively. As shown in FIG. 3, flaw control members 302A and 302B
have a round disc-like valve gate 304A and 304F3, respectively. Valve gate 304A
contains a bore 320 substantially in the center of the valve gate so as to allow a substantially cylindrical Fage 1 G

piece to pass through the bore. l will be understood that bore 320 may be any geometrical shape (e.g., square, rectangular, polygonal, etc.) that will allow passage of a corresponding geometrical-shaped piece to pass through the bore.
Attached to valve gate 304A is a hollow driver shaft 316. Driver sl3aft 316 is placed in transverse relation to valve gato 3048. Preferably, driver sl~aaft :31 f~
is substantially concentric with bore 320 and contairs substantially the same geometric shape as bore 320.
Attached to valve gate 3048 is a member 318, which may be solid or hollow.
Driver shaft 316 and member 318 may be attached to valve gate 304A and 3048 by any means known in the art, such as, but not limited to, welding, adhosive bonding, or may be formed integrally with valve gates 304A and 3048.
Figure S further illustrates guides 322A a.nd 32.28. Guides 322A and 3228 essentially add structural support to flow control assemblies 300A and 30013.
Guides 322A
and 3228 contain bores 326A and 326B whose inner diameters correspond respectively with the outer diameters of driver shaft 316 and member 318. In practice, driver shaft 316 slidably passes through bore 326A, and, similarly, member ;318 slidably passes through bore 3268. Preferably, guides 322A and :i2'?11 are. esseaatially follow ~;xcept for three support bars generally designated as 340A and 340B. 'flee hollow structure allows for structural members to pass through guides 322A and 3228 and to be movably connected to valve gates 304A and 3048, which will be discussed in further detail later in this specification.
However, it will be appreciated that guides 322A a~vd 3228 may be constructed having a partially solid configuration as long as tho requisite area is presort to allow for movement of parts.
Figuro 5 shows resilient member 344A and 3448 which are placed onto driver shaft 316 and solid member 318, respectively. Resilient members 344A and 3448 are shown in Yage I

Figure 5 to be springs. However, one skilled in the art will understand that resilient members 344A and 3448 may be any structure which maintains a bias such as, but not limited to, a rubber material, an elastic material, polished metal, and the like.
Figure 5 further depicts fitting member 348 and corresponding sealing member 350.
The configuration of fitting member 348 and sealing meoraber 350 will be discussed in more detail later in this specification. However, in general terms, fitting member 348 is tapered on one side to provide a valve seat for valve gate 3()2A. Similarly, sealing member 350 is tapered on one side to provide a valve seat for valve gate 3028. Preferably, valve gates 302A and 3028 have corresponding tapers to allow toz° bettor sealing engagement.
As shown in Figure 2, first housing portion 20 ;? arid second housin;e;
portion 204 are configured to allow for placement of flow control assemblies 30()A and ;30(>B
to be disposed substantially within each housing. Figure S shows ridge 3b0 placed on the interior surface of first housing portion 202. Ridge 3fi0 acts as structural support for flow control assembly 300A. During assembly, guide 322A rests on ridge 3fi0. Resilient member 344A
is slid onto driver shaft 31G, after which flow control member 302A is placed into first housing portion 202 with driver shaft 316 passing through bore 32(iA. Finally, fitting member 348 is placed into first housing portion 202 to complete the; llr:~w ccantrol assembly 300A. It will be understood .from the drawings and l;orel;oing discussion that flow control assembly 3008 may be assembled in a manner similar to that for flow control assembly 300.
It will be noted from Figure 5, that second housing portion 204 has a ledge 362 to provide a similar structural funetic~n as ridge 36(a. 7t will 'be appreciated that first housing portion 202 and second housing portion ?()4 may have structural ridges and grooves on the interior surface of the housing to provide for batter structural engagement of corresponding parts of flow control assemblies 300A and 3()0B.

In one embodiment, snap rings 364A and 3648 care provided for a better sealing engagement when flow central assembly 300 A and 3008 are assembled and for easier disassembly during maintenance of the valve assembly. In anather embodiment, valve gate 304A and 3048 may have an O-ring placed along the taper to provide for better sealing engagement.
Figure 6 is a crass-section of an exemplary embodiment of the dry break valve assembly, illustrating the sealing engagement between first housing portion 202 and second housing portion 204. First housing portion 202 and second housing portion 204 are joined in sealing engagement preferably in at least two ways - at their outer rims and between fitting member 348 and sealing member 350, Figure 6 shows the outer rims of' first housing portion 202 and second housing portion 204 in sealing engagement. During assembly of dry break valve assembly 200, coupler 500 acts to join the outer rims of first housing portion 202 and second housing portion 204 to join them in sealing engagement. Tightening of the coupler 500 further acts to seal valve assembly 200. Preferably, La-shaped grooves 2048 are configured such that sealing engagement occurs when pins 504 are engaged with L-shaped grooves 2048.
Preferably, a sealing feature is also provided between fitting member 348 and sealing member 350. As shown in Figure (~, fitting member 348 is provided with a tapered ridge 368 running circumferentially around fitting merraber 348. Similarly, sealing member 350 is provided with a corresponding tapered channel 370 running circumferentially around sealing member 35U. The terms "peripheral" and "circumferential"' are adopted herewith to describe tapered ridge 368 and tapered channel 370 since tapered ridge 368 is disposed around the perimeter of an interior cavity formed within fitting m~;rnber 348. 'thus, peripheral tapered ridge 368 peripherally defines the opening of a cavity formed through xitticig member 350.

By providing ridge 3ti8 and channel 370 with tapered surfaces, greater surface area is provided which allows an improved sealing e,ngagemont without increasing the diameter of fhe embodiment as is required, for example, t:o increase the sealing surface;
area when using a common flange joint.
Coupler 500 is provided with compressing edge 372 which biases compensating washers) 374 against abutting edge 376 of° fitting member 348. Coupler 50U attaches to the external surface of seating memlyer 350 by the twist coupling method discussed previously and described in more detail hereinafter. C'omlaensa ing washers) 374, shown best in Figure 6, serves a dual purpose. Compensating washers) 3 ~4 provides compensation due to "creeping" (degradation of the seal due to thermal contraction) which occurs at low temperatures. Compensating washers) 374 also serves to bias coupler 5()0 in a direction which will hold pins 504 in the L-shaped grooves 2048 and thus provides the tension necessary for proper operation of the twist coupling. In this regard, when pins 504 are seated in the L-shaped grooves 2048, compensating washers) 374 biases fitting member 348 towards sealing member 350, and thus assists in forming a proper seal.
As can be seen best in Figure 6, fitting member 348 is provided with an abutting edge 37G while coupler 500 is provided with a compressing edge 372. One pin 504 and L-shaped groove 204B can be seen in the lower portion caf' Figure 6.
Compensating washers) 374 is positioned so that compressing edge :~72 anci abutting edge 376 are urged apart. Pins 504, grooves 2048, and compensating washer(s.1 374 are ar~rangod such that sealing contact between tapered ridge 368 and tapered channel 370 <:xccur;s when pins 504 are situated in grooves 2048. This arrangement provides that when pins 504 are received in the grooves 2048, compensating washers) 374 is par~iially or fully canapressed.

It should be understood that compensating washers) 374 rnay be replaced by structures other than that shown and described in c~:>nr~e~tion with Figure 6 above. For example, if the embodiment is to be usrd only under n Moderate temperature and pressure conditions, compensating washers) 374 may be a washer of a resilient or elastic material, such as rubber. Depending upon the application, these :~lci~led i:n the aa-t will be able to determine what alternative structures and materials may be used for compensating washers) 374. The washers) 374 is preferably compressible so as to allaw pins S04 to seat in grooves 204B while urging tapered ridge 308 in o sealii g engagement with tapered channel 370.
This arrangement provides a coupling which is highly resistant to loosening due to vibration, By the above-described arrangement, tapered ridge 368 is held in tight sealing arrangement with tapered channel '370. Note that a vasviety of means may be profitably employed to perform the functions enumerated herein, of providing a sealing engagement between first housing portion 202 and second housing portion 204. Fitting member 348 and sealing member 350 are examples of means fc>r sealirtgly c~t~gaging first hoi.ising portion 202 and second housing portion 204. Accordingly, thc; structure disclosed herein simply represents one embodiment of structure capable of performing these functions.
It should be understood that this structure is presented solely by way of example and should not be construed as limiting the scope of the present invention in army way.
In one embodiment, an actuating mechanism is used to operate the flow control assemblies 300A and 3008. Figt0.re ? illustrates a perspective view of an actuating mechanism SUI. Preferably, actuating n:~echariism S()1 uses carry action in operation. Cam action refers generally to a sliding piece in a mechmical linkage used especially in transforming rotary motion into linear motion or vice versa.

As depicted in Figure 7, actuating mechanism 5()1 has a cam handle 5(:>3. Cam handle 503 provides three attachment sites, 512, S 16 A, and 516B. Attached to site 512 is cam arm 518, which in turn is connected to driver 5()S at attachment site 514.
Driver 505 has a first and 526 and a second end 528. Driver 505 is shown in Figure '7 to be essentially cylindrical in shape. However, it will be understood that ~:iriver 505 may be any geometric shape which will correspond with driver Shat°t 316 and guide bore 326A.
Driver 505 is essentially a mechanical piece for imparting motion to components of the dry break valve assembly as will be discussed in further detail later i~~ the specification.
Attached to sites 516A and S 16B are displacement shafts 50bA and 5()613. Displacement shafts 506A and 506B are shown in Figure 7 to be essentially uectangular~ ire shape. However, it will be understood that displacement shafts 506A and 506B may be manufactured in any geometric shape, such as cylindrical, elliptical, square, and the like, without departing from the scope of the present invention.
Preferably the connections of driver 505 and displacement shafla SI)6A and 506B to cam handle SU3 at sites 512, 516A and 516B are pin connections such that the parts may be movably connected. However, it will be understood that such connections may be done in a variety of ways known to tl~t art including, but not limited to a bolt, a screw, pins, and the like.
As shown in Figure 2, cam handle 402, also refet~rcd to as an actuating lever, is connected to an actuating arm 510, which, in turn, is connected to an actvaating lever 508.
Actuating arm 510 is substantially disposed wi hin firsi housing portion '20~'. Actuating arm 510 is preferably placed such that it is substantially over the center of actuating mechanism 501. Preferably actuating a~~rn 510 arid canx handle 5()T~ are connected such that cam handle 503 Cannot move independently oi' actuating arm 51 ().

Figure 7 also shows valve gates 3()4A and 3U4B ire relation to actuating mechanism 501. Valve gate 304A is shown operably connected to actuating mechanism 501 while valve gate 3048 is disposed in operative relation to the actuating mechsanism.
Actuating mechanism 501 effects motion in both valve gate 304A and 3048 at substantially the same time.
Valve gate 304A is shown with second end 523 of driver 505 disposed through bore 320. Preferably, in the resting position, second end 528 is substantially disposed within bore 32U. However, it will be understood that second end 52~ may be partly out of bore 320 without departing from the scope of the present invention. The driver 505 is sized to slidably pass through bore 320 without substantial c~bstrucaion from bore 32().
Displacement shafts 506A and 5U6B are shown to be connected to valve gate 304A
at attachment sites S2C>A and 5208. Bore 3'?() arid sites :52()A and 5 20B are placed in a triangular configuration with sites 52UA and 52UB being placed substantially equidistant from bore 320. Sites 52()A and 520B are also placed substantially equidistant from actuating arm 510 such that displacement shafts 5U6A aaad 5068 are in substantial alignment with one another. Preferably the connections between displacement shafts 506A
and 5068 and connection sites 520A and 52U8 are pin curanectiorrs such that the parts may be movably connected. However, it will be understood that the parts may be connected by known means in the art, such as, but not limited to, welding, bolting, and the like, without exceeding from scope of the present invention.
Referring now to Figures '7A and 7B, the operation of actuating mechanism 501 will be discussed in detail. Figure 7A shows a side view of a4tuating mechanism 501 at rest.
Attachment site 512, cam arm 518, and attaclrrnent site 514 create a joint 53U. Generally, actuating mechanism 5U1 operates as follows: the operator depresses the actuating lever 402 Page ?3 (shown in Figure 2) and then t:he operator rotates actuating lever 402 which transmits a torque force (TF) through actuating arm 510 (not shown). 'fhe torque farce (TF) is shown in Figure 7B in the direction of the arrows.. Such torque force (TF;I rotates cam handle S03 which in turn rotates sites 512, 516A, and 5168 ( not shown). Thus, driver 505, and displacement shafts 506A and 5t)68 (not shown) will be ira motion at substantially the same tame.
As cam handle 503 rotates, site S 12 rotates in a downward direction forcing motion through cam arm S 1$ and, in turn, forcing driver 505 in a downward direction.
Driver 505 passes through bore 320 such that second end S28 of the driver comes into contact with valve gate 3048. The downward motion o1' driver SOS pushes against valve gate 3048, which displaces valve gate 3048. The displacement of valve gate 304B forces resilient member 3448 in a biased position. In oxae embodiment, located substantially at the center of valve gate 3048 is a groove 524. 'fhe shape of groovy: S24 corresponds with the geometric shape of the end face of driver SOS such that driver 505 engages groove 524.
At substantially the same ti rye as situ S 12 is irr motion, sites S 16A and 5168 are rotating in an upward direction, thus pulling displaconrerrt shafts S06A. and S06B in an upward direction. This upward rnotiorl pulls at attacllmerlt sites 520A and 5208 (not shown), which in turn pulls valve gate 304A upward, displacing valve gate 304A. The displacement of valve gate 304A forces resilient member 344A in a biased position. Thus, at substantially the same time, valve gates 3t)4A and 3048 are displaced or opened to establish fluid communication between the valere gates. 1'~igure 7B shows a side view of the actuating mechanism in full operation (i.e., fully opened) with valve gates 304A and 3048 being displaced or opened. Thus, at least irrdirec~tly, actuating mechanism SUl acts to open bath valve gates 304A and 3048 at substantially the same time.

When actuating mechanism SO1 is in fully open, with valve assembly 200 completely assembled, actuating mechanism 5()1 will lock into place automatically. This automatic locking feature is provided by the equilibrium of forces provided by the torque force (TF) and an equal and opposite retention force (RF) created by resilient member 344B.
Luring actuation, cam arm 518 acts to shift attachment site S 12 frorr~
attachment site 514, such that the sites are offset from one another as shown in Figure 78.
In other words, when actuatioag naecl~arusrn 5(:71 is completely actual.ed, joint 530 is in an overextended position. When actuating mechanism S01 is fully actuated, resilient member 3448 is depressed in a biased position. The ~°etention force (RF) created by biased resilient member 3448 acts upwardly through valve gate 3048 to driver 50S to keep joint 530 locked in an overextended position. Once the retention force (RF) is applied, the torque force (TF) is no longer required and actuating ra~echar~isrn 501 will remain locked until the retention force (RF) is removed. 'Thus, the present invention provides for an automatic locking mechanism when the actuating rnoc:hanism S01 is l:ully opened aalcl dry break valve assembly 200 is fully assembled.
In one embodiment, dry break valve assembly 20(J has an automatic check valve feature (i.e., fail closed feature). When the sealing engagement between first housing portion 202 and second housing portion 204 is broken, valve assembly 2()0 automatically closes to prevent substantial leakage of fluid. As discussc,d above, valve gates 304A and 3048 are maintained in the open position by applying a torque force (TF) andlor a retention force (RF). When actuating mechanism 501 is fully activated, and the i:orclue force (TF) is removed, actuating mechanism :501 remains locked due to tl~e retentio~u force (RF) as discussed above. Releasing the retention force (RF) will cause actuating mechanism 501 to automatically close. Essentially, if no torque force ('fF) or retention force (RF) is applied, Page ?5 actuating mechanism SOl is predisposed to spring back into its original position because resilient members 344A and 344B are biased in tlae closed position, i.e., valve gates 304A
and 3U4B close at substantially the same time. Release of the retention force (RFC may occur when first housing portion 202 is separated from sealing engagement with second housing portion 204. It will be understood that separation of first housing portion 202 from second housing portion 204 may occur manually or automatically. Thus, the present invention provides for automatic checking c>f fluid flow whenever the valve assembly is disassembled, whether automatically or manually.
Directing attention ~iow to Figure 8, vat°ious details are provided regarding aspects of an alternative embodiment. In the exemplary emboctimor~t illustrated in Figure 8, a fluid system apparatus 7U0 is provided that comprises a dry break valve assembly 20U
with associated coupling 500 (see, e.g., Figure 7A), and feedback system 800.
In general, feedback system 800 comprises a feedback fluid source 802 arranged for fluid communication with v pressure transducer 8(>4 cror other suitable device, and with dry break valve assembly 200, by w°ay of a sensor line 806 which may comprise any type of pipe, conduit, or tubing suitable for the particular application or environment where fluid system apparatus 700 is to be employed, and which may be constructed of a variety of materials, or combinations thereof; including, but nat limited to, metals, plastics, or rubber.
Feedback system 800 further includes a processor 808 in communication with pressure transducer 804, a memory 810 and display 812.
In applications where valatile materials such as hydrocarbons may be present, it is desirable to locate devices such as pressure; transducer 80:1, which may produce sparks in some conditions, in an explosion-proof' enclosure or atl~er location where such hydrocarbons would be unlikely to come intca contaua wi h pressure transducer 8U4. 'The same is likewise Page 2fi true with regard to any other components disclosed herein that could, under certain conditions, generate a spark.
As indicated above, bath feedback fluid source 802 and pressure transducer 804 are arranged for fluid communication witU dr°y break valve assembly 200.
Specific details concerning the interface between dry break valve assembly 200 and feedback system 800, and their related operational features, are pr°ovided below in the context af° the discussion of Figures 9A and 9B. In general however, dry break valve: assembly 200 includes two, or more, discreet portions (see Figures 9A and ~B) that, when joined together, cooperate to define a chamber 813 (see Iiigures ~)A and 98) capable of' fluid communication, by way of sensor line 806, with pressure transducer 804 and feedback fluid source 802.
In this exemplary embodiment then, the chamber 813 defined by dry break valve assembly cooperates with feedback fluid source 802, pressure transducer 804, and sensor line 806 to collectively define the boundaries of a closed system having no outlet. In some embodiments, sealing devices including, but Trot limited to, gaskets and oTrings, comprising any suitable material(s), may be employed to facilitate formation and/or sealing of the chamber 813.
In addition to the aforementioned components, at least some embodiments of fluid system apparatus 700 further include a plurality of isolation valves 814 that permit feedback fluid source 802, pressure transducer 804, and/or airy break valve assembly 200 to be isolated for maintenance or replacement. Isolation valves 814, individually or collectively, may comprise gate valves, ball valves, globe valves, or any other devices) that facilitate implementation of the functionality disclosed herein, and isolation valves 814 may comprise any materials) compatible with the rc~uirernents of a particular application.
Finally, various types of instrumentation including, but not limited to, pressure gauges and temperature gauges, may be included in fluid system apparatus 700 as appropriate.
Directing more specifjc attention naw to feedback fluid source 8()2, the volume of fluid provided by feedback fluid source 802 ma.y camprise any fluids) cansistent with the functionality disclosed herein, wherein such fluids imay include, but are not limited to, liquids, gases, or combinations thereof. In one exemplary embodiment of the invention, the fluid provided by feedback fluid source 802 comprises a substantially inert gas, nitrogen for example. However, any other suitable gas or liquid, ~.rr combing ion thereof, may be employed as necessary to suit the requirements of a particular application.
Further, in at least some embodiments of the invention, feedback fluid source also includes a check valve or similar device or feature which allows feedback fluid to flow out of feedback fluid source 802 tc> pressure transducear 804 and to the chamber defined by dry break valve assembly 200, but does not allaw fluid flow in the reverse direction.
Feedback fluid source 802 may comer°ise a pump, ~.ampressor, or any other equipment capable of implementing the functionality disclased herein.
Note that in one alternative embodiment, no feedback fluid source 802 is necessary.
In this exemplary embodiment, a closed system is defined that is bounded by pressure transducer 804 or other suitable device, the chamber 813 defined by dry break valve assembly 200, and sensor line 806. A vacuum connection is provided in this Closed system to enable a predetermined vaeuurn, or negative pressu~°e, to be drawn, such as by a vacuum pump or any other equipment, system, ar device capable of drawing a vacuum, generally referred to herein as "vacuum devices."' Pressure gages and/or other suitable instrumentation are employed to verify the existence and magnitude of the vacuum.

Moreover, the vacuum may be defined with respect to any suitable reference point. In one embodiment of the invention, the vacuum is def ned with respect to atmospheric pressure.
As suggested by the foregoing; discussion, equipment and devices such as the feedback fluid source 802 and vacuum pumps disclosed herein are but exemplary structures that function as a means for exerting pressure, which may be either positive;
or negative with respect to a predetermined reference pressure. As disclosed herein, such means for exerting pressure generally serve to, among other things, establish and maintain a predetermined pressure in a substantially closed system. Accordingly, it should be understood that such structural configurations are presented herein solely by way of example and should not be construed as limiting the scope of the present invention in any way. Rather, any other structure or device that is eh fictive in inrpl~merrting tlro Iiznctionality disclosed heroin may alternatively be employed.
With respect now to pressure transducer 804, it was suggested earlier that a variety of means may be employed to ianplemont the functionality of pressure transducer 804.
Thus, pressure transducer 804 is but an exemplary structure that functions as a means for sensing fluid flow. Accordingly, it should be understood that such structural configurations ar~o presented herein solely by way of example and should not be construed as limiting the scope of the present invention in any way. Rather, any other structure or device that is effective in implementing the functionality disclosed lwrein may alternatively be employed.
By way of example, soma embodiments of the inventicpn may employ a flow switch instead of a pressure transducer. Such a canfrguration is illustrated in Figure 8A. As suggested by its name, flow switch 804A would permit a detoxmination to be made as to whether or not there was fluid flow through sensor line 8(»i. Since fluid glow can only c>ccur in response to a pressure differential, such as would be detected by a pressure transducer, flow switch laago ~~

804A can be effectively substituted for pressure switch 804. Note that the sensitivity, and/or other operational variables, of flaw switch 804A may be adjusted as necessary to suit the requirements of a particular application.
As another example, a differential pressure, gauge 8048 may alternatively be employed in place of pressure transducer 804, as indicated in Figure 8B. In such an arrangement, the high pressure side of~ differential pressure gauge 8048 is connected to sensor line 806 and the low pressure side of differential pressure gauge 8048 is exposed to atmospheric pressure. Any change in a prcdetermir~~,d pressure differential between the high pressure side (sensor line 806) and the law pressu~°e side (atmospheric) of the differential pressure gauge, would serve to indicate that flow was accurnng through sensor line 806.
Other arrangements of differential pressure gauge 8()48 that would be effective in implementing such functionality may alternatively be employed. For example, differential pressure gauge 8048 ntay be configured so that both the high and law pressure ports are in fluid communication with sensc7r li«~ 8C)(a. In a '"na flaw" condition, the differential pressure reading would be zero. In the event of flaw through sensor line 806, a non-zero differential pressure would be indicated at differential pressure gauge 8U4B.
As in the case of flow switch 804A, the sensitivity, andlor other R;oper~~tianal variables, of differential pressure gauge 8048 may be adjusted as necessary to suit the requirements of a particular application. Like pressure transducer 804, flaw switch 804A and differential pressure gauge 8048 each comprise an exemplary structure that fur~~ctican as a means for sensing fluid flow.
Note that the exemplary flow switch and differential pressure gauge configurations illustrated in Figures 8A and 8B, respectively, c~nay each b~ employed using feedback fluid source 802, or may alternatively be employed in a vacuum configuration, at least one embodiment of which is disclosed herein.
1'agc; :3() With continuing attention to .Figures 8 through 8)3, and directing; attention now to Figure 9A, details are provided concerning various aspects of the relation between feedback system 800 and dry break valve assembly 200 of fluid system apparatus i'00. As disclosed elsewhere herein and as indicated in the exemplary embodiment of dry break valve assembly 200 illustrated in Figure 9A, first housing portion 2(72 defines a tapered ridge 368 that is received within a tapered channel 370 defined by second housing portion 204 when first housing portion 202 and second housing pardon 204 are joined together.
b1 the embodiment illustrated in Faigure 9A, tapered ridge 368 anti tapered channel 370 are configured so that when tapered ridge 368 is folly rc:.ceived within tapered channel, an annular gap, or chamber 813, is defined by the bottom ~~f tapered ridge 368, and tapered channel 370. Note however that the embodiment illustrated in Figure 9A is exemplary only and variables including, but not limited to, the geometry and arrangement of tapered ridge 368, tapered channel 37U, and chamber 813 may be modified or adjusted as necessary to suit the requirements of a particular application, equipment, or environment.
By way of example, components of dry break valve, assembly 200 other than, or in addition to, first housing portion 202 and second housing portion 204, may be employed to define chamber 813. As another example, more than one chamber 8l3 may be defined, depending on the requirements of a particular application. As yet anather example, it may be desirable in some embodiments to configure clmmbc~r 813 in such a way that it is in fluid communication with one or more p~~rtions of fluid passageway 201 defined by dry break valve assembly 200. However, any configuration that facilitates implementation of the functionality disclosed herein may be employed. Accordingly, the scope of the invention should not be construed to be limited solely to the disclosed embodiments.
f age 31 Directing continuing attention to li~igure ~;~A, attd with continued reference to Figures 8 through 8B, further details are provided concerning the interface between dry break valve assembly 200 and feedback systetrc 800. As indicated in the exemplary embodiment illustrated in Figure 9A, a feedback part 2040 is defined that extends through second housing portion 204 and communicates with chamber 813. One or mare titting(s), such as fitting 806B, serve to facilitate connection of sc;nsor line 806 to feedback port 204C, and thereby enable fluid communication between sensor line 8()6 and chamber 8I3.
In one embodiment of the invention, fittings) 8(76E~ comprise removable compression-type fittings.
In yet other embodiments, one or more al' fittings 806B may be permanently attached to sensor line 806 and/or second housing portion 204 to allow, for example, selective fluid communication between chamber 813 and feedback port 2(?4C'. However, any other type of fittings and/or connection may be employed that are consistent with the functionality disclosed herein. lVloreover, in the event the ieed.back port is defined in the housing portion of dry break valve assembly 200 that is attached to ~ molaile unit, such as a tanker truck, fittings 806B, for example, permit a user to connect and discoumeet feedback fluid source 802 with chamber 813 as!'if required, as suggested above.
Similarly, various aspects of feedback port 2040 rnay be varied as necessary to suit the requirements of a particular application. For example, feedback port 204C
may be constructed so that it can be capped. As at~otlaer example, feedback poet 2040 may alternatively be defined by first housing portion 202, as discussed below.
Further, it may be desirable in some cases to employ rnultipl~ parts 2(>4C'. Generally however, any configuration and/or arrangement of feedback port 2040 that facilitates implementation of the functionality disclosed herein nay be en yployed.

Directing attention now to Figure ~1B, aspects of an alternative embodiment of dry break valve assembly 200 and feedback system 800 are illustrated. Uenerally, the operational aspects of the embodiment illustrated in Figure 9B are substantially the same as those of the embodiment illustrated i~u F"igur~:. 9.A. M~~r~ca~~Er, the embodiment illustrated in Figure 9B is generally similar in other regards to the embodiment illustrated in Figure 9A
except that the feedback port, denoted at 2020 in Figure: t~B, is defined in first housing portion 202 instead of being defined in second housing portion 2U4 (Figure !aA). Such an arrangement may be desirable where, ~i~r example, second housing portion 204 comprises part of a fluid delivery system attached to a tanker truck and it would be impractical to provide a hard pipe connection between feedback fluid source 802, located at a fluid transfer facility, and second housing portion 21.14.
With continued attention to Figures 8 through 9, details are prr,>vided regarding various operational aspects of fluid system apparatus 700, directing attention initially to an exemplary embodiment of feedback system 800. Nate in this regard that various alternative embodiments of feedback system 800 (aspects of which are illustrated in Figures 1 l and 12) are discussed below as they relate to, among other things, measurement of line fluid leakage from fluid system 1000 (Figures 1 f) throta.gh 12).
With respect to the embodiment illustrated in Figures 8 through 9, at least, feedback system 800 serves to give an operator or other personnel some assurance a.s to the integrity of the joint cooperatively farmed, for example, by first housing portion 202 and second housing portion 204 of dry break valve assembly 200. Note however that, while feedback system 800 may be employed in ec>r~jun~;tion with dry break valve assembly 200, as in the case of fluid system apparatus 70U, such employrxaent is exemplary only and feedback system 800 may, more generally, be employed in any application or environment where it is desired to obtain information, and/or implement one or more actions, concerning the integrity of one or more joints.
In operation, isolation valves 814 are opened, and feedback fluid source 802 transfers feedback fluid to the closed system hounded 1>y feedback fluid so~.arce 802, pressure transducer 804, sensor line 80t>, and chamber 813, until such time as a predetermined pressure level is reached. The pressure of the feedback system fluid provided by feedback fluid source 802 may be selected as required based ran floe requirements of the particular application. As noted earlier, feedback tyuid source 802 may not be required in all instances and, instead, a vacuum arrangement may be used in various embodiments of feedback system 800.
After a predetermined pressure l~a.s been established, the closed system collectively defined by feedback fluid source 802, pressure tt°ansducer 804, sensor Line f306, and chamber 813, will then be in a condition of static #luid equilibrium, that is, a condition where the pressure of the feedback system t~luid is co~natant throughout the closed system and, accordingly, no pressure dif"ferential will be sensed by pressure transducer 804. This static fluid pressure will be maintained. at least in part by feedback fluid source 802, in the closed system so long as first housing parlicrn 2()2 and second housing portion 204 are properly joined together.
Thus, a signal generated and transmitted by pressure transducer 804 under such static equilibrium conditions serves to indicate that, in the case of first housing portion 202 and second housing portion 204 for example, tapered ridge 368 of first housing portion 202 is fully received, and properly seated, within tapered charane:l 370 defined by second housing portion 204.
fags 34 Because first housing portion 202 and second llcjusing pardon 204 can be verified in this way to be properly joined together, a system open°atar can obtain a relatively high level of assurance as to the integrity of the joint farmed by first housing portion 2()2 and second housing portion 204 and can, .accordingly, transfer florid through dry break valve assembly 200 with a relatively high level of° confidence that no leaks will occur. Thus, it is a feature of at least some embodiments of the irwentian that a system operator can prospectively, and reliably, ensure the integrity of the joint(sj dcfi~ned by dry break valve assembly 200. This feature is particularly useful where, for example, dry break valve assembly 200 is to be used in conjunction with the processing of harar does mat~riuls.
A related feature is that embodiments of the irmention are effective in providing joint integrity feedback to the system operator during and offer fluid processing operations, as well as beforehand. With specific reference. to l~igurexh ~.)A and 98, the integrity of the joint formed by first and second housing portions 202 and 204. respectively, can be monitored without regard to whether valve gates 304A and 304f3 are in the "open" or "closed"
position. As another example, in the event that a change occurs to the pressure of the feedback fluid during pumping operations, thus indicating a loss of joint integrity, a system operator may take appropriate remedial action cc>r~~;ernin f; the system within which dry break valve assembly 200 is employed, such as, but not limited to, shutting down the pump.
As discussed in greater detail below, such remedial actions may alternatively be performed automatically and substantially in real-time:.
As suggested above, it is also a feature of° embodiments of the invention that feedback system 8t)0 can be configured to be quite sensitive, as even a slight misalignment or separation of first housing portion 20', and second t~ousi~~g portion 204 may permit feedback fluid to leak from chamber 813, thereby triggering a feedback fluid pressure Page: 3 S

change that would be sensed by pressure transducer $04. Such sensitivity is useful at least because such slight misalignments or separations would be unlikely to be identified during a simple visual inspection for example. Woreover, such sensitivity is desirable in those cases where hazardous materials are being processed and even very small spills are unacceptable.
Of course, in other applications, slight misalignments or other conditions may be permissible, and the sensitivity, and/or «ther pertinent operating parameters, of pressure transducer $04, or other components of" feedback system $00, can be adjusted accordingly.
It may also be desirable in some cases to adjust the sensitivity, andlor other pertinent operating parameters, of pressure transduc;ert° $04 to ccottvpensate for thermal expansion and/or contraction, and the attendant pressure changes, of the feedback fluid.
As noted above, static equilibrium in the closed system should be maintained so long as first housing portion 2()2 and second hoo,tsirxg portion 204 are properly joined together and so long as there are no significant leaks elsewhere. However, in the event first housing portion 202 and second housing portion 204 are not pra~porly",joined together, or separate for some reason (thereby causing flow control assemblies :30()A and 3008 to automatically shut and prevent further flow through dry break valve assembly 200), some or all of the pressurized feedback system fluid will leak fion~ charmber $13, for example, past tapered ridge 36$ and into fluid passageway 701. Depending upotl the nature of the defect in the joint formed by first housing portion 2t)2 and second housing portion 204, the feedback system fluid may additionally, or alternatively, escape Pram dry break valve assembly 200 into the surrounding environment.
It was noted earlier that fluid flow in this case implicates a change in pressure that will be sensed by pressure transducer $04. Accordingly, pressure transducer $04 then generates and transmits a signal, which rx~ay be cLigital. on analog, to processor $08, that Page 3fi serves to signify that the integrity of the joint being monitored, in this case, the joint cooperatively defined by first housing portion 202 and second housing porl.ion 204, has been compromised in some way. As discussed below with reference to Figure '10, this signal can then acted upon by processor 808 so as to enable appropriate actions) to be taken concerning the system within which dry break valve; assembly 200 is employed.
With continuing attention to Figures 8 the°ougl~ 9, further details are provided regarding the operational aspects of feedback system BUp. As noted earlier, feedback system 800 includes one or mare processors 808 in communication with a memory 810 and display 812. dote that processor 808, memory 810, and displa:~y 812 collectively comprise, in some embodiments, a computer or similar device, and that such computer or device may further comprise components such as, but not limited to, input devices such as keyboards, output devices, modems, and media readers and writers such as optical or magn~~aic disk drives.
Further, such computer may be a portable device, and may be employed in a stand-alone configuration, or in conjunction with a computer network.
As discussed in further detail below, p~°ocessor 808 is also configured for communication with, among other things, an equipment controller 902 (Figure 10).
Communication between processor 808 and oquil~ment controller X702, as well as communication among the various ccompanents of' firedbac,k system 800, and control system 900 (Figure 10), may comprise wireless communication, and/or hardwire-based commumcanon.
In operation, one or more signals generated b~~ pressure transducer 804 are transmitted to processor 808. As described elsewhere herein, such signals) generally serve to indicate the status of the pressure in the closed system c~ollectiv~ly defia~ed by feedback system fluid source 802, pressure trarasduc;er 8t)4, arnl clamber 8L3, wherein such status may include, but is not limited to, static feedback fluid pressure, and a change in feedback fluid pressure. Note that, as disclosed herein, pressure transducer 804 m~.y also be used to monitor, and generate and send corresponding signals relating to, a vacuum present in the closed system collectively defined by feedback system fluid source 802, pressure transducer 804, and chamber 813. Finally, the signals) transmitted by pressure transducer 844 may be transmitted substantially continuously or on a predetermined intermittent basis. One or more pressure transducers 804 may be used to monitor a single ,joint, or multiple joints, depending upon the requirements of a particular application.
As suggested in Figures 8 through 9, the value, and/or other variables concerning the signals) produced by pressure transducer 804 or any other component in communication either directly or indirectly with processor 8fj8, may 'be stored in memory 810 so that a historical record of data concerning the integrity of the joint formed in dry break valve assembly 200, and/or any other joint{s) of interest whether or not such joints are defined either in whole or in part by dry break valve assembly 20(:), may be created and preserved.
Examples of data types that may be gathered and/or stored include, but a~°e not limited to, the pressure of the feedback fluid, the time at which such pressure was measured, the magnitude of the change irt pressure o1' the feedback fluid, and the time at which such change in pressure occurred.
As further suggested in Figures 8 through y, one or more aspects of the signals) produced by pressure transducer 804 and transmitted to processor 808 may be presented on display 812 in a form and manner consistent with the particular application with which feedback system 800 is employed. By way of example, the ~nagrxitude c>f the pressure of the feedback fluid as a function of time may tie plotted and displayed.

Moreover, a variety of means may be employed to perform the functions of feedback system 800. Thus, the embodiments of feedback system 800 disclosed herein are but exemplary structures that function as a nmazas for nzorzitor~izzg joint integrity. Accordingly, it should be understood that the structural configurations of feedback system 800 disclosed herein are presented solely by way of example and should not be construed as limiting the scope of the present invention in any way. Rather, any other structure, feature, or combination thereof, that is effective in impleznentizig the functionality of feedback system 800 may alternatively be employed. By way of example, and as suggested above, some embodiments of the present invention are directed to a feedback system 800 that includes a flow switch 804A, or differential pressure gauge 804F3, in place of pressure transducer 804.
Note that while at least ane embodiment. o1' feedback system 800 rnay be employed in conjunction with dry break valve assembly '~00, the scope of the invention should not be construed to be limited solely to that application. lz~ fact, feedback system 800 may be employed in conjunction with any fluid system component which includes discrete elements that cooperate to form a joint whose integrity is o,f interest or concern.
Accordingly, embodiments of feedback system 8t:)0 may be employed in conjunction with fluid system components such as, but not limited to, a pair of pipe flanges that, when joined together, form a joint and associated chamber. Alternatively, feedback system 800 may be employed in conjunction with a joint fornied by two distinct fluid system components, such as the joint formed by a valve flange and a tank flange. The foregoing are exemplary only however, and the scope of the present invention should not be construed to be limited to any particular arrangement of one or more fluid system components. In fact, as discussed below, the scope of the present invention is not limited to flzzid systems.
Page 3~

Specifically, the joints) to be monitored need not be concerned at all with the fluid systems, and may, in fact, comprise any .joint whose integrity is of interest or concern. By way of example, a joint in a machine may be designed so as to form a chamber when two discrete elements of the machine are fastened together. Moreover, the chamber need not necessarily be defined by the joint. Instead, any chamber that is configured such that a pressure change in the chamber corresponds in some manner to a loss of joint integrity may be employed. Note that while, in the case of dtvi~es su~l~ as dry break valve assembly 200, where the chamber is substantially defined solely by the device itself, other configurations and devices may be employed wherein the chamber is only partially defined by the device, and wherein additional structures or devices are employed to more completely define the chamber.
As the foregoing example suggests, etlibodiments of feedback system 800 may be employed with any device having two ar more discrete elements that cooperate to form a joint. Note that, as contemplated herein, "device" may comprise either a single structure or multiple structures, and the "discrete elements'" of such device may refer to separate portions of a single structure that comprises the device, or rnay° alternatively refer to separate structures that collectively comprise the device.
In view of the foregoing, feedback system 800 may be empl.ayed with any joint and chamber configuration, without being lix~iited to a specific manner or structure concerning the formation and/or configuration of such joint and/or chamber. Accordingly, embodiments of the invention should not be construed to be limited to any particular structural configuration or arrangement.
With continuing attention now to Figures 8 through ~), and directing attention now to Figures 10 through 12, details are provided coaacerniag various aspects c~f an exemplary Page 4!) embodiment of a control system 900. As indicated in those figures, control system 900 includes one or more equipment controllers 902 in commutaication with processor 808. One feature of such an arrangement is that the signals) p~°oduced by, for example, pressure transducer 804, can be used to implement various actions with respect to fluid. flow through dry break valve assembly 200 or, more generally, the fluid system 1000 within which dry break valve assembly 200 is employed.
In the illustrated embodiment, the signals) received by processor 808 from pressure transducer 804 causes processor 808 to generate one or more appropriate sets of instructions which are then transmitted to equipment controller ~?02. In response, equipment contxoller 902 generates a corresponding cantrol signal whit;h is then used to implement, by way of equipment 904 including, but not limited to" pumps, valves, and other ec)uipment, one or more particular actions with respect t:o fluid system 10()0.
The response of fluid system 1000 is returned to equipment controller 902 in the form of a feedback signal. By comparing the feedback signal with the instructions received from processor 808, equipment controller 902,, if'necessary, generates another control signal so as to cause the associated equipment 9()4 to adjust, fc:rr example, the performance or operational characteristics of fluid system 1000. Thus, the integrity, or lack thereof of the joint defined either in whole or in part by dry break valve assembly 200, or by any other component or device to be monitored, can be used to cause various actions or omissions of action, as applicable, with respect to the system within which such component or device is employed. In other embodiments, the control signal generation and comparison is performed by processor 808.
Note that, as contemplated herein, "equipment controller" refers to any circuits, systems, and/or devices that use input from feedback system 800 and from equipment 904 to regulate or manage any aspect of the performance or operation of fluid system 1000.
Consistent with the foregoing, at least orzc emlaodirrr~nt o!" the invention, discussed below, includes an equipment controller !)02 that comprises a startistop controller caf a fluid pump.
Specifically, in one exemplary embodiment of control system 900, pressure transducer 804 is interlocked with an equipment cantroTler 902 that comprises a start/stop controller of a fluid pump which is irz fluid cc>zz~murai~;ation wi h dry break valve assembly 200. One feature of such an exemplary arrangement is that in the overt pressure transducer 804 generates, and transmits to processor 8(>8, a signal indicating a loss of integrity in the monitored joint, processor 808 will then generate and send appropriate instructions to the start/stop controller associated with tyre fluid pump, thereby preventing startup of the fluid pump and thus, preventing leakage from dry break valve assembly 2U0. ~ related feature is that such an arrangement affords substantially real-tune control of fluid system 1000 within which the fluid pump and dry break valve assembly 20() are employed. The real time control feature is also germane to those embodiments wherein feedback system 800 and/or control system 900 is employed with other than t~luid systems.
Control system 900 is rat, however, limited solely to the foregoing exemplary functionality. In other embodiments of the invention, control system 900 may be employed to reduce the pressure of the flow through dry break valve assembly 200 to a level that would substantially foreclose, or at least reduce, leakage, every in the event that integrity of the joint is lost, and/or control system 9()C) may he used to vary the flow rate or other variables of the flow associated with dry break valve assembly 200.
In general, embodiments of' control system 900 may be employed to, among other things, cause the performance of various actions corrz;sponding to a particular state of joint integrity. Accordingly, embodiments of the invention should root be construed to limited Pogo 4?

solely to the exemplary functiona:lities o~° features disclosed herein.
Moreover, embodiments of control system 900 are not limited solely to fluid systems applications but, more generally, may be employed in the context of any system where it is desired to monitor the integrity of one or more joints and/or cause the implementation of one or more actions, corresponding to various states of joint integrity, concerning the system or device within which the monitored joints) are present. Finally, enlbodirnents of control system 90U may be combined with embodiments of feedback system 800 to form a fluid management and control system 1100.
With more specific attention now to Figures 1l and 12, details are provided concerning various aspects of alternative embodiments of feedback system 800.
Specifically, some embodiments of° the invention may include provisions for using the signals) generated by pressure transducer 804 (see, e.g., Figure 10), or other equipment or devices, to generate quantitative data concerning any leakage that may occur, for example, from chamber 813 of dry break valve assembly 200. As an example, in the event leakage is occurring from chamber 813, pressure differential data gathered by pressure transducer 804 over a period of time can be transmitted to processor 808 and used to determine, among other things, the rate at which such leakage is occurring, as well as the specific amount of feedback system fluid that is lost, and/or the amount of line fluid that is lost from fluid system 1000, wherein "line fluid" refers to the fluid or material passing through and/or processed by way of, fluid system 1000, as distinct from the feedback system fluid discussed elsewhere herein. As discussed below, the ability to make such determinations may prove useful in some applications.
At least in cases where the feedback system fluid comprises a compressible fluid, conservation of mass principles for compressible fluids can be used to derive the rate at which feedback system k7uid is leaking frorr~ chamber 81 ~. such principles can also be employed in conjunction with those embodiments where a ~~a~uum arrangement is employed in the place of a feedback. system t7uid because, i~o the event of a loss of joint integrity, a flow of atmospheric air, a compressible 1'luid, into tl~e chamber 813 will occur.
The following gas dynamics equations may be used in conjunction with the determination of mass flow rates of compressible fluids (note that it is implicit in Equations 1 and 2 below that the feedback system lJuid or atmospheric air, as applicable, acts as a perfect gas and that any flow of the feedback. system fluid is substantially frictionless):
Equation 1: Y' x ( p~ t) _.. ~yl :~ t) --~-. ran = Y x ( jW t ) Equation 2: p~6 t = ( p/ t)!RT =:> m = Y' x (( p/ t)lRT) where:
Y'= volume of space containing the feedback system fluid (known) m = mass flow rate (to be calculated) R = feedback system fluid constant (given) T'= feedback system fluid temperature (measured) p = pressure of the feedback system fluid (measured) t = tine (measured >
p% t -- rate of pressure change (measured) p = feedback system fluid density (known) ~ak~ t ~ rate of feedback system fluid density change (c:alculated) In this exemplary embodiment, the volume Y' c~wn be readily determined by metering the amount of feedback system t7uid that is introd.uc~°d by feedback fluid source 802 (or removed by a vacuum device, as applicable) it7to the closed system collectively defined, for example, by feedback fluid source 802, thec~rnorneter 81 f3, pressure gauge 818, sensor line lm'age 44 806, and chamber 813. Moreover, the gas constant l~ for nitrogen, for example, is 0.2968 kJ/kg x K and can be easily obtained frown a gas table, and the temperakure T
of the feedback system fluid is readily ascertained by way of a thermometer 816 (Figure 11) in fluid communication with sensor line 806. In the illustrated embodiment, thermometer 816 is configured to transmit feedback system fluid temperature data to processor 808. Similarly, pressure gauge 818 is arranged far fluid communication with sensor line 806 and is configured to transmit feedback system i~luid pressure data to processor 808.
By receiving, on a substantially continual basis, or other desirable time basis, the feedback system fluid temperature ~' data from thermometer 816 and feedback system fluid pressure p data from pressure gauge 818, correlating at least the feedback system fluid pressure data to time t, and by coW bining such data with the known values of ~' and R, in the manner suggested by Equations 1 and 2, processor 808 is able to use an algorithm embodying Equations 1 and ~ to calculate, on a real-time basis, the mass flow rate m, if any, of the feedback system fluid out of ohami~er 813.
Note that because the presence of pressure gauge 818 permits the value of pressure p to be measured, on a continual or other basis, as a function of time t, the pressure differentials, as well as changes in pressure with respect to time, can be readily calculated by processor 808, thereby obviating the reed, at least in tlae exemplary embodiment illustrated in Figure 11, For pressure transducer 804, It may be desirable in other cases however, to employ both pressure transducer 80Q, or other equipment, and pressure gauge 818.
Further, because feedback system 8()(> is able gather and process feedback system fluid temperature data, some embodirrienls of' feedback system 800 are configured to compensate for changes in the pressure of the feedback system fluid that result from conditions other than a loss of joint integrity. ~s ago example, a decrease in ambient temperature would likely cause the pressure of the feedback system fluid to drop, thereby resulting in generation of a pressure drop signal that could erroneously be interpreted to indicate a loss of joint integrity.
Moreover, the ability of feedback systett~ 80U to monitor and collect various types of feedback system fluid data an an ongoing basis permits feedback system 80() to interact with control system 900 and respond in a desired manner tc~ various predefined feedback system fluid conditions, such as by facilitating the implementaLian of appropriate corresponding actions, disclosed elsewhere herein, concerning fluid system 1000. By way of example, embodiments of feedback system 800 c°an be confil;ured to monitor the feedback system fluid for the presence or occurrence of various conditions such as, but not limited to, a predetermined rate of pressure drop, a pressure drop ~~f predetermined magnitude, and the occurrence of any change in pressure.
Similar to the case of other exemplary embodiments disclosed herein, the data collected by feedback system 800 through the use of thermometer 816 and pressure gauge 818 may be stored in memory 810, presented on display 812, and<'or processed in various ways by processor 808. As discussed herein, processor 808 serves to calculate, among other things, pressure differentials and changes in pressure with respect to time, or any other parameters that can be derived from known and/or measured data and information.
As noted elsewhere herein, a flow of feedback system fluid usually indicates that the integrity of the associated joint has been compromised in same way, or that the joint was improperly formed in the first instance. In 1:he event such a compromise occurs, the line fluid present in fluid passage 210 see;, e.1;., Figures 9A and 98) of dry break valve assembly 200, for example, will in many cases tend to flow into chamher 813 at substantially the same rate at which the feedback system fluid flaws out of chamber 813. Thus, the leak rate of the line fluid can be closely approximated, in real tune, by determining the mass flow rate m of the feedback system fluid which, as discussed above, caax be readily performed with various embodiments of the invention.
The ability to determine, in real time and on a continual basis, the leak rate, if any, of the line fluid is useful in a number c>f applications. By way of example, in some hydrocarbon processing evolutions, spe~i~c parts per million (ppm) figures for permissible line fluid discharge have been established by various regulatory bodies, and failure of the processing plant operator to conform with such standards may result in substantial fines and/or plant shutdown, Thus, this exemplary embodiment of feedback system 800 serves not only to provide feedback to the processing plant operator concerning joint integrity, and to facilitate implementation of corresponding remedial actions if required, but also to enhance the ability of the processing plant operator to verify and maintain compliance with relevant operational standards through the monitoring and determination of line fluid leak rates. Note that in at least one embodiment, flow switch 804A (Figure 8A) may be configured to generate an alarm sigtxal in the event the line fluid leak rate exceeds a predetermined value. Further, feedback system 800 may be readily reconfigured or adjusted as required for consistency with changes in permissible discharge ppm, or other, standards.
In the exemplary embodiment of feedback system 800 illustrated in Figure I 1, mass flow rates m of the feedback system florid are derived at least in part through the use of feedback system fluid pressure data supplied by a pressure gauge or similar device.
However, it may be desirable in some cases to measure such mass flow rates m directly.
Various features of an exemplary embodiment of a feedback system 800 conf guyed in this way are illustrated in Figure 12.
Page ~.7 As indicated in Figure 12, the illustrated ernboclirnent of feedback system includes a flow meter 820, in fluid communication with sensor line 806, drat permits direct measurement of mass flow rates ni, F'urthor, flow meter 820 is in electronic communication with processor 808 so that signals generated and trtansmitted by flow meter 82() can be received and processed by processor 808 generally as disclosed elsewhere herein. In some cases, processor 808 causes the storage, marripulatior~r, and/or display of data received by processor 808 from flow meter 820. .4s another ~;~arnple, processor 808 may use data received from flow meter 820 to facilitate the implementation of various actions, such as by way of various equipment controllers, ec>rrc~°nairrg the !'laid system 1000 in conjunction with which feedback system 800 is employed.
The specific type, and/or operational characteristics, of flow meter 820 employed in a given application may be selected dep~,nding c:~n upo~~ various factors, such as whether the feedback system fluid comprises a gas or a liquid. 1?~cemplary types of flow meters that may be employed include, but are not limited to, tlrernial mass flow meters, and induction-based flow meters. In general however, any type of flow rrreter or other device useful in implementing the functionality disclosed herein may be employed, and the scope of the present invention should net be canstrGrecl to be limited to any particular type of flow meter.
Further, the operational characteristics of the flow meter may likewise be selected and/or adjusted based upon particular application requirements. By way of example, the flow meter may be conf guyed to store a predetermined number of real time data points that can be transmitted to a processor such as processar 8t)8, for example.
Further, the flow meter may be configured to measure, in addition to llow rate at a particular point in time, the total volume of flow that has occurred through the flow meter over a given period of time.
Moreover, the flow meter can be set to generate an alarm or other signal under various Page ~8 specified conditions concerning the feedback system fluid and/or line fluid wherein such conditions include, but are not limited to, passage of a predetermined volume of flow, passage of a predetermined volume of" flowv over a defined time interval, or upon the occurrence of any flaw.
As suggested by the discussion herein concerning the determination of mass flow rates m, and various other characteristics, of the feedback system fluid, various approaches may be utilized in making such determinations. In particular, a computational approach, as exemplified by the use of pressure data, and gas dynamics consewation of mass principles and equations, examples of which are disclosed herein, may be desirable in some cases. In other cases however, an empirical approach may be desirable. In at least one embodiment disclosed herein, such an empirical apps°oaeh is exemplified by the use of" devices and instruments such as flow meters to directly measure the mass flaw rate m of the feedback system fluid. In view of the foregoing, the scope of the invention should not be construed to be limited solely to a particular computational ar empirical technique, or to a particular type of technique. Rather, any technique or approach, ar combination thereof, useful in implementing the functionality disclosed herein may k~c employed.
It should be noted that e~uipmerat and devices such as the pressure gauge 818 and flow meter 820 disclosed herein are but exemplary structures that function as a means for producing line fluid leakage rate data. As disclosed herein, such means far producing line fluid leakage rate data serve to, among other things, measure a line fluid leakage rate directly, as in the case of t7aw meter 820, car generate data, such as feedback system fluid pressure data for example, that can be used to derive the line fluid leakage rate, as in the case of pressure gauge 818. Accordingly, it should be understood that such structural configurations are presented herein safely by way of example and should not be construed as limiting the scope of the present invention is any way. Rather, any other structure or device that is effective in implementing the functionality disclosed herein may alternatively be employed.
The described embodiments are to be considered in all respects only as exemplary and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. 1~~11 changes which come within the meaning and range of equivalency crf the claims are tc7 ~~e embraced wii:hin their scope.

Claims (45)

WHAT IS CLAIMED IS:

1. A fluid system apparatus suitable for use in conjunction with a fluid system, comprising:

(a) a valve assembly disposed between a fluid source and a fluid destination for facilitating a transfer of fluid between the fluid source and the fluid destination such that leakage of the fluid is minimized when the valve assembly is disassembled, the valve assembly comprising:
(i) a housing including a source housing and a destination housing that cooperate to at least partially define a fluid passage, wherein a coupler releasably engages the source housing with the destination housing;

(ii) a source flow control assembly including a source resilient member disposed within the source housing, wherein the source flow control assembly controls the transfer of the fluid through the source housing;
(iii) a destination flow control assembly including a destination resilient member disposed within the destination housing, wherein the destination flow control assembly controls the transfer of the fluid through the destination housing;
(iv) an actuating lever operably connected with the housing;
(v) an actuating mechanism operably connected with the actuating lever, wherein the actuating mechanism includes a driver and at least one displacement shaft, the at least one displacement shaft connected with the source flow control assembly, wherein the driver and the at least one displacement shaft cause the destination flow control assembly and the source flow control assembly to open at substantially the same time when the actuating lever is rotated, and wherein the source flow control assembly and the destination flow control assembly close when the source housing separates from the destination housing, said actuating mechanism being configured to lock in an overextended position when fully actuated; and (b) a feedback system including:

(i) means for exerting a predetermined pressure on at least said passage;
(ii) means for sensing fluid flow, said means for sensing fluid flow being in at least indirect communication with said means for exerting a predetermined pressure; and (iii) a processor in operative communication with said means for sensing fluid flow.

2. The fluid system apparatus as recited in claim 1, wherein said means for sensing fluid flow is configured to detect changes in said predetermined pressure.

3. The fluid system apparatus as recited in claim 1, wherein said means for sensing fluid flow generates a signal corresponding to a change from said predetermined pressure.

4. The fluid system apparatus as recited in claim 1, wherein said means for sensing fluid flow is selected from the group consisting of. a pressure transducer, a flow switch, and a differential pressure gauge.

5. The fluid system apparatus as recited in claim 1, wherein said means for exerting a predetermined pressure comprises a feedback system fluid source that provides a volume of feedback fluid and is configured for fluid communication with said passage by way of a sensor line.

6. The fluid system apparatus as recited in claim 1, wherein said means for exerting a predetermined pressure is selected from the group consisting of: vacuum devices, compressors, and pumps.

7. The fluid system apparatus as recited in claim 1, wherein said means for exerting a predetermined pressure facilitates maintenance of said predetermined pressure in said passage.

8. The fluid system apparatus as recited in claim 1, wherein said feedback system further includes a means for producing line fluid leakage rate data concerning the fluid system.

9. A fluid system apparatus suitable for use in conjunction with a fluid system, comprising:

(a) a valve assembly suitable for use in managing fluid flow, the valve assembly comprising:
first and second housing portions configured to be releasably joined together by a coupling, the first and second housing portions collectively defining at least one fluid flow passage and a joint when joined together;
first and second flow control assemblies disposed within the first and second housing portions, respectively;
an actuating mechanism configured to automatically lock in an overextended position substantially disposed in the at least one fluid flow passage, and the actuating mechanism comprising:
a cam mechanism;
at least one displacement shaft connected to the cam mechanism, the at least one displacement shaft being operably connected with the first flow control assembly;
a driver connected to the cam mechanism, the driver being arranged for operational contact with the second flow control assembly; and an actuating lever operably connected with the cam mechanism; and (b) means for monitoring integrity of said joint defined by said first and second housing portions when said first and second housing portions are joined together.

10. The fluid system apparatus as recited in claim 9, wherein said means for monitoring integrity of said joint exerts a predetermined pressure.

11. The fluid system apparatus as recited in claim 10, wherein said means for monitoring integrity of said joint generates a signal corresponding to a status of said predetermined pressure.

12. The fluid system apparatus as recited in claim 10, wherein said means for monitoring integrity of said joint generates a signal when said predetermined pressure changes to a specified magnitude.

13. The fluid system apparatus as recited in claim 10, wherein said means for monitoring integrity of said joint determines a line fluid leakage rate from the fluid system.

14. The fluid system apparatus as recited in claim 13, wherein said line fluid leakage rate is determined substantially in real time.

15. The fluid system apparatus as recited in claim 10, wherein said predetermined pressure is positive with respect to atmospheric pressure.

16. The fluid system apparatus as recited in claim 10, wherein said predetermined pressure is negative with respect to atmospheric pressure.

17. The fluid system apparatus as recited in claim 10, wherein said means for monitoring integrity of said joint comprises a feedback system, said feedback system comprising:
(a) a feedback system fluid source that provides a volume of feedback fluid and is configured for fluid communication with said joint by way of a sensor line;
(b) means for sensing fluid flow, said means for sensing fluid flow being in at least indirect communication with said feedback system fluid source; and (c) a processor in operative communication with said means for sensing fluid flow.

18. The fluid system apparatus as recited in claim 17, wherein said means for sensing fluid flow is selected from the group consisting of. a pressure transducer, a flow switch, and a differential pressure gauge.

19. A fluid system apparatus suitable for use in conjunction with a fluid system, comprising:

(a) a dry break valve assembly, comprising:

first and second housing portions configured to be releasably joined together, the first and second housing portions collectively defining at least one fluid flow passage and a joint when joined together;
first and second flow control assemblies disposed within the first and second housing portions, respectively, said first and second flow control assemblies each further comprising a valve gate biased into a predetermined position by a corresponding resilient member;
an actuating mechanism operably connected with the first and second flow control assemblies and substantially disposed in the at least one fluid flow passage; means for automatically locking said actuating mechanism in an overextended position upon full engagement of said actuating mechanism; and an actuating lever operably connected with the actuating mechanism; and (b) means for monitoring integrity of said joint formed by said first and second housing portions.

20. The fluid flow management system as recited in claim 19, wherein said means for monitoring integrity of said joint exerts a predetermined pressure.

21. The fluid flow management system as recited in claim 20, wherein said means for monitoring integrity of said joint generates a signal corresponding to a status of said predetermined pressure.

22. The fluid flow management system as recited in claim 20, wherein said means for monitoring integrity of said joint generates a signal when said predetermined pressure changes to a specified magnitude.

23. The fluid system apparatus as recited in claim 20, wherein said means for monitoring integrity of said joint determines a line fluid leakage rate from the fluid system.

24. The fluid flow management system as recited in claim 19, wherein said means for monitoring integrity of said joint comprises a feedback system, said feedback system comprising:
(a) a feedback system fluid source that provides a volume of feedback fluid and is configured for fluid communication with said joint by way of a sensor line;
(b) means for sensing fluid flow, said means for sensing fluid flow being in at least indirect communication with said feedback system fluid source; and (c) a processor in operative communication with said means for sensing fluid flow.

25. A fluid system apparatus suitable for use in conjunction with a fluid system, comprising:
(a) a valve assembly suitable for use in managing fluid flow, the valve assembly comprising:
first and second housing portions configured to be releasably joined together by a coupling, the first and second housing portions collectively defining at least one fluid flow passage when joined together;
first and second flow control assemblies disposed within the first and second housing portions, respectively;
an actuating mechanism configured to automatically lock in an overextended position and operably connected with the first and second flow control assemblies and substantially disposed in the at least one fluid flow passage; and an actuating lever operably connected with the actuating mechanism, wherein the actuating mechanism causes the first and second flow control assemblies to automatically assume a closed position upon removal of the coupling.

(b) means for exerting a predetermined pressure in said;
(c) means for sensing fluid flow, said means for sensing fluid flow being in at least indirect communication with said means for exerting a predetermined pressure;
and (d) a processor in communication with said means for sensing fluid flow.

26. The fluid system apparatus as recited in claim 25, further comprising a means for producing line fluid leakage rate data concerning the device.

27. The fluid system apparatus as recited in claim 25, wherein said means for exerting a predetermined pressure is selected from the group consisting of: vacuum devices, compressors, and pumps.

28. The fluid system apparatus as recited in claim 25, wherein said means for sensing fluid flow is configured to detect changes in said predetermined pressure.

29. The fluid system apparatus as recited in claim 25, wherein said means for sensing fluid flow generates a signal corresponding to a status of said predetermined pressure.

30. The fluid system apparatus as recited in claim 25, wherein said means for sensing fluid flow generates a signal in the event of a change in said predetermined pressure.

31. The fluid system apparatus as recited in claim 25, wherein said means for sensing fluid flow is selected from the group consisting of: a pressure transducer, a flow switch, and a differential pressure gauge.

32. The fluid system apparatus as recited in claim 25, wherein said means for exerting a predetermined pressure facilitates maintenance of said predetermined pressure.

33. A fluid system apparatus suitable for use in conjunction with a fluid system, the fluid system apparatus comprising:
(a) a valve assembly for use in managing flow between a fluid source and a fluid destination, the valve assembly comprising:
a source housing having a source flow control assembly substantially disposed within the source housing;
a destination housing having a destination flow control assembly substantially disposed within the destination housing;

means for releasably joining the source housing and the destination housing, the source and destination housings collectively defining at least one fluid flow passage when joined together; and means for activating an actuating mechanism, wherein the activating of the actuating mechanism at least indirectly causes the actuating mechanism to displace at substantially the same time the source flow control assembly and the destination flow control assembly in an open position, establishing fluid communication between the fluid source and the fluid destination; and means for automatically locking said actuating mechanism in an overextended position upon full engagement of said actuating mechanism; and (b) a feedback system fluid source that provides a volume of feedback fluid and is configured for fluid communication with said means for releasably joining by way of a sensor line;
(c) a means for producing line fluid leakage rate data; and (d) a processor in communication with said means for producing line fluid leakage rate data.

34. The fluid system apparatus as recited in claim 33, wherein said means for producing line fluid leakage rate data either measures said line fluid leakage rate directly or gathers data that can be used to derive said line fluid leakage rate.

35. The fluid system apparatus as recited in claim 33, wherein said means for producing line fluid leakage rate data gathers pressure data concerning said feedback fluid.

36. The fluid system apparatus as recited in claim 33, wherein said means for producing line fluid leakage rate data gathers pressure data concerning said feedback fluid on an intermittent basis.

37. The fluid system apparatus as recited in claim 33, wherein said means for producing line fluid leakage rate data gathers pressure data concerning said feedback fluid on substantially continuous basis.

38. The fluid system apparatus as recited in claim 33, wherein said means for producing line fluid leakage, rate data cooperates with said processor to generate line fluid leakage rates in substantially real time.

39. The fluid system apparatus as recited in claim 33, wherein said means for producing line fluid leakage rate data comprises one of: a flow meter in fluid communication with said sensor line and said processor; and a pressure gauge in fluid communication with said sensor line and said processor.

40. A fluid management and control system, comprising:
(a) a valve assembly suitable for use in managing fluid flow, the valve assembly comprising:
(i) first and second housing portions configured to be releasably joined together by a coupling, the first and second housing portions collectively defining at least one fluid flow passage when joined together;
(ii) first and second flow control assemblies disposed within the first and second housing portions, respectively;
(iii) an actuating mechanism configured to automatically lock in an overextended position and operably connected with the first and second flow control assemblies and substantially disposed in the at least one fluid flow passage; and (iv) an actuating lever operably connected with the actuating mechanism, wherein at least one of the first and second flow control assemblies exerts a retention force on the actuating mechanism when the first and second flow control assemblies are in an open position; and (b) a feedback system, comprising:
(i) a feedback system fluid source that provides a volume of feedback fluid and is configured for fluid communication with said coupling by way of a sensor line;
(ii) means for sensing fluid flow, said means for sensing fluid flow being in at least indirect communication with said feedback system fluid source; and (iii) a processor in operative communication with said means for sensing fluid flow;
and (c) a control system in operative communication with said processor and comprising at least one piece of equipment in operative communication with an equipment controller.

41. The fluid management and control system as recited in claim 40, further comprising a means for producing line fluid leakage rate data concerning said fluid system component.

42. The fluid management and control system as recited in claim 40, wherein said means for producing line fluid leakage rate data comprises one of: a flow meter in fluid communication with said sensor line and said processor; and a pressure gauge in fluid communication with said sensor line and said processor.

43. The fluid management and control system as recited in claim 40, wherein said means for sensing fluid flow is selected from the group consisting of: a pressure transducer, a flow switch, and a differential pressure gauge.

44. The fluid management and control system as recited in claim 40, wherein said means for producing line fluid leakage rate data either measures said line fluid leakage rate directly or gathers data that can be used to derive said line fluid leakage rate.

45. The fluid management and control system as recited in claim 40, wherein said means for exerting a predetermined pressure is selected from the group consisting of: vacuum devices, compressors, and pumps.