CN205991181U

CN205991181U - Shut-off valve for fluid transmission or stocking system

Info

Publication number: CN205991181U
Application number: CN201620408484.8U
Authority: CN
Inventors: J·M·迪亚兹
Original assignee: Emerson Process Management Regulator Technologies Inc
Current assignee: Emerson Process Management Regulator Technologies Inc
Priority date: 2015-05-07
Filing date: 2016-05-06
Publication date: 2017-03-01
Anticipated expiration: 2026-05-06
Also published as: CN106122490B; CN106122490A

Abstract

This utility model relates to the shut-off valve of fluid transmission or stocking system.A kind of shut-off valve for fluid transmission or stocking system, including：Valve body, described valve body limits ingress port, outlet port and the fluid flowing passage extending between described ingress port and described outlet port；Valve seat, described valve seat is arranged in described valve body and neighbouring described outlet port；Axle, described axle is at least partially disposed in described valve body；And control assembly, described control assembly arranges in sub described valve body and is operatively coupled to described axle.Described control assembly can move between make position and open position, described control assembly sealingly engages described valve seat to seal described outlet port in described make position, described control assembly in described open position away from described outlet port and substantially in the outside of described fluid flowing passage so that described control assembly provides minimum flowing restriction to flowing by the fluid of described fluid flowing passage.

Description

Shut-off valve for fluid transmission or stocking system

Technical field

Present disclosure is related to process transmission or control system, more particularly, it relates to for process transmission or control system The low flowing with overflow closing function of system limits shut-off valve.

Background technology

Gas storage and distribution system (being such as used for storing and distribute the system of liquefied natural gas or liquefied petroleum gas) are led to Often the gas from manufacturer is stored in one or more tanks and then along a series of pipelines and passes through series of valves By gas transport and be sent to client's tank body.In the application of liquefied petroleum (LP) gas, gas tank Transmission system generally includes one Or multiple overflow inner valve, this overflow inner valve is in response to the breakage in gas storage and distribution system (for example, due to downstream tube Damage in road) and close.However, high flowing is often undesirably limited introducing system by these overflow valves, this transfers to lead Flowing is caused to upset and cavitation.Meanwhile, in liquefied natural gas (LNG) application, gas distributing system generally includes and plays master One or more gate valves of shut-off valve function or ball valve.However, these gate valves or ball valve do not have the overflow being provided by overflow valve Valve function and more (if any) additional functionality is not provided.

Utility model content

In view of gas tank Transmission system generally includes one or more overflow inner valve, overflow inner valve is stored up in response to gas Deposit and close with the breakage (for example, due to the damage in downstream line) in distribution system, but these overflow valves often do not conform to Desirably high flowing is limited introducing system, this transfers leading to the problem of upset and cavitation that flows, at one of the present utility model In aspect, there is provided a kind of shut-off valve for fluid transmission or stocking system, described shut-off valve includes：Valve body, described valve body Limit ingress port, outlet port and the fluid flowing passage extending between described entrance and described outlet；Valve seat, described valve Seat is arranged in described valve body and neighbouring described outlet port；Axle, described axle is at least partially disposed in described valve body；Drive Element, described driving element is arranged in described valve body and is coupled to described axle；And valve member, described valve member is arranged on In described valve body and be operatively coupled to described axle, described valve member can move between make position and open position, Described valve member sealingly engages described valve seat to seal described outlet port in described make position, and described valve member is described Open position away from described outlet port and substantially in the outside of described fluid flowing passage so that described valve member to Flowing provides minimum flowing to limit by the fluid of described fluid flowing passage.

In one example, described valve member is in response to being more than predetermined pole by the fluid flow of described fluid flowing passage Limit and automatically move to described make position.

In one example, described valve member includes discharge port, and described discharge port is configured to：When by described stream When the described fluid flow of body flow channel is more than described preset limit, promote to be discharged by described fluid flowing passage.

In one example, described driving element is arranged between the outer wall of described valve body and described valve member.

In one example, described shut-off valve also includes the first biasing element, and described first biasing element is arranged on described Between driving element and described valve body, described first biasing element is configured to bias described driving element to make position.

In one example, described shut-off valve also includes the second biasing element, and described second biasing element is arranged to make Described driving element and described valve member bias towards each other.

In one example, described aixs cylinder goes out in the outside of described valve body and is operably coupled to for controlling described axle External actuator.

In one example, described axle can substantially move perpendicular to the near axis of described fluid flowing passage.

In one example, described axle can rotate around described axle, and wherein, described valve member includes swing type valve structure Part.

In one example, described axle can slide along described axis.

In one example, described shut-off valve also includes the actuator for adjusting overflow capacity, and described actuator is joined It is set to the described drive member of joint to change the position of the described drive member being in described make position.

In other side of the present utility model, there is provided a kind of shut-off valve for fluid transmission or stocking system, Described shut-off valve includes：Valve body, described valve body limits ingress port, outlet port and in described ingress port and the described port of export The fluid flowing passage extending between mouthful；Valve seat, described valve seat is arranged in described valve body and neighbouring described outlet port；Axle, institute State axle to be at least partially disposed in described valve body；And control assembly, described control assembly be arranged in described valve body and It is operatively coupled to described axle, described control assembly can move between make position and open position, described control assembly Sealingly engage described valve seat in described make position to seal described outlet port, described control assembly is in described open position Away from described outlet port and substantially in the outside of described fluid flowing passage, so that described control assembly is logical to flowing The fluid crossing described fluid flowing passage provides minimum flowing to limit.

In one example, described control assembly includes driving element and valve member, and described driving element is configured to ring The actuating of axle described in Ying Yu and between make position and open position mobile described valve member, described valve member is in described closure Position seals ground engages described valve seat to seal described outlet port, and described valve member is in described open position away from described outlet Port.

In one example, described valve member is in response to being more than described pass by the fluid flow of described fluid flowing passage The overflow capacity of disconnected valve and automatically move to described make position.

In one example, described axle can rotate around the axis being substantially perpendicular to described fluid flowing passage.

In one example, described axle can slide along the axis being substantially perpendicular to described fluid flowing passage.

In one example, described shut-off valve also includes slope, and described slope is arranged in described valve body, described slope limit Determine to be at an angle of, with respect to described axis, the path of navigation to orient, wherein, described axle is via the connection being guided by described slope Element is coupled to described control assembly.

In other side of the present utility model, there is provided a kind of shut-off valve for fluid transmission or stocking system, Described shut-off valve includes：Valve body, described valve body limits ingress port, outlet port and prolongs between described entrance and described outlet The fluid flowing passage stretched；Valve seat, described valve seat is arranged in described valve body and neighbouring described outlet port；Axle, described axle is extremely Partially it is arranged in described valve body；Driving element, described driving element is arranged in described valve body and is coupled to described Axle；Valve member, described valve member is arranged in described valve body and is operatively coupled to described axle, and described valve member can close Close and move between position and open position, it is described to seal that described valve member sealingly engages described valve seat in described make position Outlet port, described valve member is in described open position away from described outlet port and substantially in described fluid flowing passage Outside so that described valve member provides minimum flowing restriction to flowing by the fluid of described fluid flowing passage；With And disconnection release mechanism, described disconnection release mechanism include between described outlet port and described valve seat, be formed at described Circumferential passageway in valve body.

According to this utility model, overflow closing capacity protection is provided, provides the flowing of minimum to limit simultaneously, so that In the overflow valve known, recurrent flowing is upset and cavitation minimizes.

Brief description

Especially elaborate that of the present utility model is considered as novel feature in the dependent claims.This utility model Can be got the best understanding with reference to following description by combining accompanying drawing, in the accompanying drawings, similar reference mark is multiple Similar components in accompanying drawing, wherein：

Fig. 1 is the perspective view of an example of the overflow valve being constructed according to principle of the present utility model；

Fig. 2 is the bottom perspective view of the overflow valve in Fig. 1；

Fig. 3 is the front perspective view of the internal part of the overflow valve in Fig. 1；

Fig. 4 is the plane graph of the internal part of the overflow valve in Fig. 1, and wherein overflow valve is shown as the end company with welding Connect；

Fig. 5 is the partial close-up view of the control assembly shown in Fig. 4；

Fig. 6 is another partial close-up view of the control assembly shown in Fig. 4；

Fig. 7 is the plane graph of the internal part of overflow valve when the overflow valve of Fig. 1 is in the close position；

Fig. 8 shows the figure of the internal part of overflow valve when overflow valve is in the first exhaust position；

Fig. 9 shows the figure of the internal part of overflow valve when overflow valve is in an open position；

Figure 10 shows the figure of the valve actuator intraware of overflow valve when being opened or close when overflow valve；

Figure 11 shows the overflow valve that can be used in Fig. 1 to change the example of the actuator of the overflow capacity of overflow valve Figure；

Figure 12 A and Figure 12 B shows another example of the overflow valve constructing according to principle of the present utility model Figure；

Figure 13 is the perspective view of another example of the overflow valve being constructed according to principle of the present utility model；

Figure 14 is the front perspective view of the internal part of overflow valve when the overflow valve in Figure 13 is in an open position；

Figure 15 is the partial close-up view of the internal part of overflow valve when the overflow valve in Figure 13 is in the close position；

Figure 16 is the cause that can use in conjunction with another example of the overflow valve being constructed according to teaching of the present utility model The perspective view of one example of dynamic device assembly；

Figure 17 is the front perspective view of the internal part of overflow valve when the overflow valve in Figure 16 is in the close position；

Figure 18 is the front perspective view of the internal part of overflow valve when the overflow valve in Figure 16 is in an open position；

Figure 19 shows the internal part of the overflow valve in the Figure 16 of each position being in closure and open position Front perspective view；

Figure 20 shows the figure of another example of the overflow valve constructing according to principle of the present utility model；

Figure 21 shows the figure of another example of the overflow valve constructing according to principle of the present utility model；

Figure 22 shows the figure of another example of the overflow valve constructing according to principle of the present utility model；And

Figure 23 shows the figure of another example of the overflow valve constructing according to principle of the present utility model.

Specific embodiment

Fig. 1-Fig. 6 depicts the lower limit overflow valve 100 constructing according to principle of the present utility model.Overflow valve 100 leads to Often it is arranged to gas or liquid application (for example, liquefied petroleum application, liquefied natural gas application, liquid nitrogen application), but will manage Solution, valve 100 can alternately or in addition be used for other process control applications.In use, overflow valve 100 provides overflow closing Capacity is protected, and provides the flowing of minimum to limit simultaneously, so that recurrent flowing is upset and empty in known overflow valve Change and minimize (if eliminating).

Go out as shown in figs. 1-3, overflow valve 100 includes valve body 104, valve is arrived in coupling (for example, removably coupling) The valve gap 108 of body 104 and the axle 112 being operatively coupled to valve body 104 via valve gap 108.

Valve body 104 has the entrance connecting portion 116 limiting ingress port 118, the outlet connections limiting outlet port 122 120 and between ingress port 118 and outlet port 122 extend fluid flowing passage 124.Although not shown herein, It is that entrance connecting portion 116 is connected to tank (not shown), such as low-temperature storage tank, and goes out when flow valve 100 is used for gas application Mouth connecting portion 120 is connected to the pipeline in overflow valve 100 downstream.Certainly, when valve 100 is used for other process transmission or controls application When, entrance connecting portion 116 and/or outlet connections 120 can optionally be connected in the transmission of those processes or control system Part.Entrance connecting portion 116 and/or outlet connections 120 can be threaded, flange connections or be welded to connect.Work as overflow When valve 100 is connected, overflow valve 100 contributes to fluid (for example, gas, liquid) via fluid flowing passage 124 from arrangement The tank swum on valve 100 is transferred to the pipeline being arranged in valve 100 downstream.

At least in this example, valve gap 108 is removably coupled to valve body 104, so that valve gap 108 can be removed, and And the internal part of the valve 100 being arranged in valve 100 can be placed under repair or tie up while flow valve 100 keeps embedded Shield (and being replaced in some cases).Valve gap 108 be axle 112 provide support, axle 112 along with fluid flowing passage It is arranged in valve body 104 to the axis portion of 124 perpendicular and project in the outside of valve body 104 and valve gap 108.So Setting, the jag 128 of axle 112 may be coupled to external actuator (not shown), such as pneumatic actuator, manual actuator, Mechanical actuator or electric actuator.When axle 112 activated, axle 112 rotates to control by flow of fluid in valve body 104 The flow of fluid of passage 124, as will be described below.

With continued reference to Fig. 1-Fig. 3, overflow valve 100 also includes disconnecting release mechanism 132.In this example, disconnect safe machine Structure 132 is in the form of the region of the remainder being partly weaker than valve body 104 in stretching in valve body 104.Specifically, Release mechanism 132 is using the passage 136 extending circumferentially over upon around valve body 104 between valve gap 108 and outlet connections 120.Logical Tensile stress is concentrated in road 136, so that in the case of the accident of downstream line that is damaged, valve body 104 is in any other position Put and break down in the region of passage 136 before breaking down, thus protect the internal part of valve body 104 integrity and Any fluid-tight is in valve body 104.It is alternatively possible to externally reinforced gusset be added (disconnected to increase cut-off point to valve body 104 The position of opening mechanism 132) intensity of upstream and robustness.

As shown in Fig. 3-Fig. 6, overflow valve 100 also includes valve seat 150 and control assembly 154, this control assembly 154 It is operatively coupled to axle 112 can to move with respect to valve seat 150 to control the flow of fluid by fluid flowing passage 124. As being arranged in valve body 104 best seen from, valve seat 150 in Fig. 3 and neighbouring outlet port 122.Valve seat 150 can be with valve body 104 are integrally formed or can be removably coupled to valve body 104 (and therefore can be removed and replaced when needed).Valve Seat 150 can be made up of metal, plastics (for example, elastomeric material) or a combination thereof.Control assembly 154 shown in Fig. 3-Fig. 6 Including driving element 158, valve member 162, the first biasing element 166 being arranged between driving element 158 and valve body 104, with And it is arranged in the second biasing element 170 between driving element 158 and valve member 162.

As in Fig. 4-Fig. 6 best seen from this example, driving element 158 has base portion 174, arm 178 and cap portion 182.Arm 178 stretches out from base portion 174 and is fixed to and the part around axle 112, so that driving element 158 is grasped It is coupled to axle 112 with making.Meanwhile, middle body the middle body from base portion 174 of base portion 174 is coupled in cap portion 182 Stretch out.Cap portion 182 can be fixed to base portion 174 (for example, via securing member) or can be with the base portion of driving element 158 174 are integrally formed.In any case, when driving element 158 is in fully open position, cap portion 182 is configured to engagement valve body 104 Inwall 184, thus being used as the retainer of driving element 158 and preventing any of driving element 158 from moving further.

Referring still to Fig. 4-Fig. 6, in this example, in the form of baffle plate 186, baffle plate 186 has base portion to valve member 162 190 and a pair of parallel arm 194.In this example, base portion 190 have generally rectangular-shaped, but circular or other shape Shape is also possible.Base portion 190 limits or forms seat passage 198 to receive and to sealingly engage valve seat 150 to turn off By the flowing (that is, closure valve 100) of valve 100.Seating face 198 can be metal, plastics (for example, being made up of elastomeric material) or A combination thereof.Valve member 162 also includes discharge orifice 200, and discharge orifice 200 is defined or is formed in a part for base portion 190.Discharge Hole 200 is configured to contribute to limited discharge, to contribute to crossing over the pressure equilibrium of valve 100, as will be described below.At this In example, discharge orifice 200 is centrally disposed on base portion 190 and by seating face 198 cincture, but in other examples, discharge Hole 200 can be arranged elsewhere.Arm 194 stretches out from base portion 190 and is fixed to and the different portions around axle 112 Point, so that valve member 162 is operatively coupled to axle 112.As in figure 6 best seen from, in one example, driving element 158 arm 178 is fixed to axle 112 at the position of (i.e. radially-inwardly) between the arm 194 of valve member 162.

As in the diagram best seen from this example, the first biasing element 166 (although being not readily apparent) is using torsion The form of spring, this torsionspring has an end of the interior section being attached to valve body 104 and is attached to driving element 158 A part the other end.Therefore, the first biasing element 166 is configured to valve member 162 is biased away from valve body 104 Wall 184 simultaneously biases towards valve seat 150 (that is, to make position).

Refer again to Fig. 4-Fig. 6, in this example, the second biasing element 170 in the form of torsion spring, this moment of torsion bullet Spring has an end 204 of the part being coupled to driving element 158 and relative with this end 204, around valve member 162 The fixing the other end 208 of arm 194.It is arranged so as to, the second biasing element 170 is configured to make driving element 158 and valve Component 162 biases towards each other.

In the case of constructing valve 100 as described, valve 100 is configured to supply overflow closing function and simultaneously Minimum flowing is provided to limit.Additionally, overflow valve 100 is configured to：Feelings in the accident of the downstream line of the valve 100 that is damaged Under condition, protect the integrity in seat region of valve and any fluid is included in valve 100.Fig. 7-Figure 10 will be used for describing overflow How valve 100 can realize these functions in operation.

Fig. 7 shows that valve 100 is in its initial make position, and this generation is not activated by external actuator in axle 112 When (that is, do not have externally actuated be applied to axle 112).In the case of not having this actuating, control assembly 154 is oriented in closure position Put, in make position, driving element 158 and valve member 162 are substantially perpendicular to fluid flowing passage 124, and valve member 162 seals Ground engages valve seat 150, and driving element 158 and valve member 162 directly contact.Driving element 158 not only supports valve member 162, but also cover the discharge orifice 200 of valve member 162, thus preventing any between ingress port 118 and outlet port 122 Flow of fluid.Control assembly 154 so orients and is because that the first biasing element 166 is inclined towards valve seat 150 by driving element 158 Put, and the second biasing element 170 makes driving element 158 and valve member 162 bias towards each other.Exist there is no external actuation force In the case of, control assembly 154 is maintained at this closure position by the bias force that the first and second biasing elements 166,170 are applied Put.Additionally, any flow of fluid in control assembly 154 upstream of closure is net by applying on the downside 157 of driving element 158 Power (in left direction in the figure 7), contributes to for driving element 158 and valve member 162 being maintained at make position.

However, when the external actuation force of the power being applied more than the first biasing element 166 is applied to axle by external actuator When 112, axle 112 rotates by this way：Valve 100 (specifically, control assembly 154) is made to move to having shown in Fig. 8 The exhaust position of limit.More specifically, external actuation force makes axle 112 rotate by this way：Driving element 158 is around axis Rotate in a clockwise direction, the inwall 184 away from valve seat 150 and towards valve body 104, as shown in Figure 8.At least show at this In example, external actuation force is by rotary drive element 158 in a clockwise direction until the cap portion 182 of driving element 158 contacts inwall 184, this prevents any of driving element 158 from moving further.At least initially, driving element 158 will be moved away from valve structure Part 162 and therefore separating with valve member 162, until the pressure at outlet port 122 is substantially equal at ingress port 118 Pressure.This situation is occurred to be because that the pressure being associated with the flow of fluid of valve seat 150 upstream is initially exceeded and valve seat 150 The pressure that the flow of fluid in downstream is associated；Therefore flow of fluid will apply (to the left) resulting net force on valve member 162, thus protecting Hold valve member 162 and valve seat 150 sealing engagement.Because driving element 158 is moved away from valve member 162, thus not covering Discharge orifice 200, fluid flows (discharge) by beginning through the discharge orifice 200 being formed in valve member 162 to outlet port 122. This discharge will continue till achieving pressure equilibrium, thus have been realized in the pressure base at outlet port 122 Pressure at ingress port 118 is equal on basis.

When achieving pressure equilibrium, the flow of fluid in valve 100 will no longer apply any significant on valve member 162 Power, so that valve 100 (specifically, control assembly 154) can move to the fully open position shown in Fig. 9.More specifically Ground is said, pressure equilibrium enables valve member 162 to swing towards driving element 158 in a clockwise direction or rotates and first with driving Part 158 contacts.Driving element 158 and valve member 162 are subsequently arranged at an angle with respect to fluid flowing passage 124.This angle Degree may, for example, be approximate 5 degree, approximate 10 degree, approximate 15 degree or certain the other value between approximate 0 degree with approximate 90 degree. Therefore, control assembly 154, particularly valve member 162, are substantially landed in the outside of fluid flowing passage 124, wherein only control The end of assembly 154 is arranged in fluid flowing passage 124.Therefore, control assembly 154, particularly valve member 162, convection cell In flow channel 124, any fluid of flowing provides little restriction.It is true that this allows valve 100 to have than known overflow The flow coefficient C of internal valve_vBigger flow coefficient C_v.For example, valve 100 can have the flow coefficient of approximate 250-350 C_v, and known overflow internal valve generally has approximate 100 flow coefficient C_v.The size and/or shape of fluid flowing passage 124 Can change to increase or decrease flow coefficient C (if desired)_v.In any case, by providing minimum flow of fluid Limit, valve 100 substantially reduces the risk of (if eliminating) cavitation, the knot that its cavitation can be upset as flowing Really occur.

When being in the fully open position shown in Fig. 9 when control assembly 154, fluid can in fluid flowing passage 124 from Ingress port 118 freely flows to outlet port 122.However, in the flow of fluid entering valve 100 by ingress port 118 In the case of reaching overflow situation (condition), valve 100 (specifically, control assembly 154) moves to shown in Fig. 8 Limited exhaust position.As it is known in the art, there is overflow situation when fluid flow meets or exceeds preset limit, lead to Often transmitted by process or control system in pressure loss cause (for example, due to downstream line rupture etc.).This predetermined pole Limit can for example correspond to a certain percentage ratio (for example, 200%) of the capacity of valve 100 being designed to be processed.No matter why Sample, when having reached this overflow situation, from the drag (drag of the fluid entering valve 100 by input port 118 Force) the bias force that will be applied more than the second biasing element 170, and therefore, this drag will drive in a counterclockwise direction Valve member 162.This drag drive valve member 162 away from driving element 158 (this driving element 158 maintains in the fully-opened position) and And towards valve seat 150 and with valve seat 150 sealing engagement.Because driving element 158 maintains in the fully-opened position, therefore valve member 162 In discharge orifice 200 be exposed so that limited amount fluid can flow, (that is, discharge) passes through discharge orifice.

Will it is realized that because in fully open position, control assembly 154 is substantially landed in the outside of fluid flowing passage 124, Pressure drop hence across valve member 162 is substantially less than the pressure drop seen in known overflow internal valve.In other words, valve 100 There is the ability providing the overflow capacity higher than known overflow internal valve.

It is repaired in process transmission or control system breakage, thus in the case of mitigating overflow situation, by discharge orifice 200 Limited discharge persistently carry out, until recovered pressure equilibrium till.In other words, control assembly 154 keeps showing in fig. 8 The exhaust position going out, and flow of fluid passes through discharge orifice 200, and the pressure at outlet port 122 is substantially equal to entrance Pressure at port 118.When having recovered pressure equilibrium, the second biasing element 170 valve member 162 is withdrawn in Fig. 9 and shows The position going out, so that valve 100 (specifically, control assembly 154) is back to fully open position.

Can not be repaired or repair the transmission of this process or control system in process transmission or control system is undesirably In the case of, can be come easily and safely complete by release externally actuated (that is, removing the actuating power being applied to axle 112) Full shut-off valve 100.Do not have any externally actuated in the case of, driving element 158 also returns to the closure position shown in Fig. 7 Put.More specifically, driving element 158 is mobile and contact with valve member 162 towards valve member 162, valve member 162 with valve seat 150 sealing engagements.This movement of driving element 158 covers discharge orifice 200, thus eliminating the limited discharge by valve 100 And of completely closed valve 100.

Alternatively, overflow valve 100 (as shown in Figure 11) can include actuator 300 (for example, fixing screws), adjusts Section device 300 promotes the regulation of the overflow capacity to valve 100.In this example actuator 300 be an exposure to outer and can be by valve 100 operator activates.The side that actuator 300 can be in a direction substantially parallel to fluid flowing passage 124 moves up.When valve 100 Operator inwardly, towards outlet port 122 movement governor 300 when, actuator 300 drives driving element in a counterclockwise direction 158, this transfers to change the angle with respect to fluid flowing passage 124 for the valve member 162.Therefore, the more part of valve member 162 sets Put in fluid flowing passage 124.This is used for reduction, in the case of overflow situation, valve member 162 is moved to make position institute The amount of the pull strength needing, thus reduce the overflow capacity of valve 100.On the contrary, when the operator of valve 100 is outwardly and towards arrival end During mouth 118 movement governor 300, driving element 158 moves (that is, falling) in a clockwise direction so that valve member 162 is less Part is arranged in fluid flowing passage 124.This action thus be accordingly used in increase and moves valve member 162 in the case of overflow situation Move the amount of the pull strength required for make position, thus increasing the overflow capacity of valve 100.

In other examples, actuator 300 internal can be arranged in valve 100 and to activate (example in a different manner As using external actuator).Additionally, actuator 300 can be arranged with respect to control assembly 154 differently, so that Actuator 300 can may move (for example, perpendicular to fluid flowing passage 124) and/or in a different direction finally with difference Mode move valve member 162.Although additionally, the tune of the overflow capacity to valve 100 can be contributed to using actuator 300 Section, but the angle of valve member 162 can be adjusted in the case of not using actuator 300 to obtain similar effect.Equally, Biasing element 166,170 can be changed to change the overflow capacity of valve 100 in terms of structure and/or bias force.For example, partially Put element 166 and/or biasing element 170 can be using extension spring, compression spring, constant force spring, leaf spring or other biasing unit The form of part (for example, breech lock).

Will additionally appreciate, valve body 104, valve gap 108, axle 112 and/or disconnection axis mechanism 132 can be with institutes in Fig. 1-Figure 10 The difference that illustrates and still carry out expected function.More specifically, the shape of valve body 104, size and/or pattern can not With.In one example, for example when expectation utilizes overflow valve in having the varying environment of various sizes of tank and/or pipeline When 100, the shape of entrance connecting portion 116 and/or outlet connections 120 and/or size can be different.In some examples, may be used With disposed axle 112 in a different manner, for example, along different axis orientation or be located relative to the different position of flow path Put (for example, further away from each other outlet port 122).For example, as shown in Figure 12 A and Figure 12 B, axle 112 can be by It is supported in the different piece of valve body 104, and along the axis orientation different with respect to valve body 104.In another example, Axle 112 may be oriented such that axle 112 turn clockwise rather than rotate counterclockwise make control assembly 154 from open position move Move exhaust position and make position.Axle 112 can also be completely contained in valve body 104, so that axle 112 does not protrude past valve Body 104 outside (and valve 100 is inner valve).In this case, introduce the axle driven member of next-door neighbour's outlet port 122 (follower) be probably it is desirable that.If desired, disconnect release mechanism 132 and can also take other forms.Lift For example, disconnect the tapered part that release mechanism 132 can be formed valve body 104, by different, weaker materials Constitute, or provide major failure position to be formed using the installation stud with recess or groove.Can also reset disconnected Open the position of axis mechanism 132.For example, when valve 100 is designed to inner valve and includes the axle adjacent with outlet port 122 During driven member, disconnect axis mechanism 132 and may be located between valve seat 150 and axle driven member.

Alternately or in addition, the construction of control assembly 154 and/or activate can from different shown in Fig. 1-Figure 10 And still carry out expected function.In other examples, the shape of driving element 158 and/or valve member 162 and/or size Can be different, for example to change the overflow capacity of valve 100, to change necessary actuating power and/or one or more bias force, or Person is used for certain other reason.In another example, valve member 162 does not need including escape orifice 200, in this case, In response to process transmission or control system in problem when, valve 100 will not have any kind of discharge capacity again.Show in other In example, control assembly 154 can also activate in a different manner.Although in conjunction with the control assembly 154 described by Fig. 1-Figure 10 It is in rotary manner externally actuated, but alternatively, control assembly 154 can be with linear (for example, sliding) mode (example As shown in Figure 13-Figure 17) outside or internally activate.

Figure 13-Figure 15 depicts another of the lower limit overflow valve 400 constructing according to principle of the present utility model and shows Example.Similar to overflow valve 100, overflow valve 400 be typically configured to gas or liquid application in (for example, liquefied petroleum application, Liquefied natural gas application, liquid nitrogen application), it is to be understood that alternately or in addition, valve 400 can be used for other mistakes In process control application.In use, overflow valve 400 provides overflow closing capacity protection, provides the flowing of minimum to limit simultaneously, from And so that recurrent flowing in known overflow valve is upset and cavitation minimum (if not eliminating).

Go out as shown in figure 13 and figure 14, overflow valve 400 includes：Valve body 404, valve gap 408, wherein valve gap 408 couple (for example, removably coupling) arrives valve body 404 and sliding stem 410 and inner shaft 412, and the two all operates via valve gap 408 Be coupled to valve body 404.

Go out as shown in figure 13 and figure 14, valve body 404 includes limiting the entrance connecting portion 416 of ingress port 418, limits The outlet connections 420 of outlet port 422 and the flow of fluid extending between outlet port 418 and outlet port 422 are led to Road 424.Although not shown herein, when flow valve 400 is used in gas application, entrance connecting portion 416 is connected to tank (not Illustrate) (for example, cryogenic tank), and outlet connections 420 are connected to the pipeline in overflow valve 400 downstream.Certainly, when valve 400 is used When in the transmission of other processes or control application, entrance connecting portion 416 and/or outlet connections 420 can optionally be connected to Part in the transmission of those processes or control system.Entrance connecting portion 416 and/or outlet connections 420 can be threaded, convex Edge connects or welds.When overflow valve 400 is connected, overflow valve 400 contribute to by fluid (for example, gas, liquid) via Fluid flowing passage 424 is transferred to, from the tank being arranged in valve 400 upstream, the pipeline being arranged in valve 400 downstream.

Valve gap 408 (at least in this example) is removably coupled to valve body 404, so that valve gap 408 can be removed, and And the internal part of the valve 400 being arranged therein can be placed under repair or safeguard while flow valve 400 keeps embedded (and being replaced in some cases).In this example, valve gap 408 has base portion 426 and upwardly extends from base portion 426 Cylinder body 428.Base portion 426 is removably coupled to the top of valve body 404.Cylinder body 428 houses inner shaft 412, its Middle inner shaft 412 is arranged along perpendicular (for example, vertical) in the axis 429 of fluid flowing passage 424, and for sliding Valve rod 410 provides and supports, and wherein sliding stem arranges (that is, valve rod 410 and axle 412 are coaxial) also along axis 429.Slide Valve rod 410 is projected into the outside of valve gap 408, and more specifically, is projected into the outside of the cylinder body 428 of valve gap.So Setting, the jag 430 (or being coupled to certain other part of valve rod) of valve rod 410 may be coupled to external actuator (not Illustrate), such as pneumatic actuator, manual actuator, mechanical actuator or electric actuator, so that slide-valve can be controlled Bar 410.When sliding stem 410 activated, sliding stem 410 moves up or down, and this transfers to make inner shaft 412 with identical Mode move up or down.

With continued reference to Figure 13 and Figure 14, overflow valve 400 also includes disconnecting release mechanism 432.Similar to as described above Disconnect release mechanism 132, in this example, disconnect release mechanism 432 take in valve body 404 stretching on be partly weaker than valve The form in the region of the remainder of body 404.Specifically, release mechanism 432 takes the form of passage 436, wherein passage 436 Extend circumferentially over upon around valve body 404 between valve gap 408 and outlet connections 420.Passage 436 concentrates tensile stress, so that In the case of the accident of downstream line that is damaged, valve body 404 break down at any other position before in passage 436 Region in break down, thus protecting the integrity of the internal part of valve body 404 and by any fluid-tight in valve body 404 Interior.It is alternatively possible to externally reinforced gusset is added to valve body 404 to increase cut-off point (position of release mechanism 432) upstream Intensity and robustness.

Go out as shown in figure 14 and figure 15, overflow valve 400 also includes valve seat 450 and control assembly 454, wherein control group Part 454 may move with respect to valve seat 450, to control the flow of fluid by fluid flowing passage 424.Although valve seat 450 is neighbouring It is formed in valve body 404 in outlet port 422, but alternately or in addition, valve seat 450 can removably couple To valve body 404 (and therefore, can remove when needed and replace valve seat 450).Valve seat 450 can be by metal, plastics (example As elastomeric material) or a combination thereof make.Valve seat 450 can become a certain angle with respect to fluid flowing passage 424 with axis 429 Degree arranging (as shown in Figure 14), or can along substantially parallel with axis 429 (for example, parallel) (and because This, with fluid flowing passage 424 perpendicular) axis to arrange.

Control assembly 454 is commonly angled relative to valve seat 450 and can move between the open and the closed positions, is wherein opening Position, valve 400 is flow of fluid that is opening and allowing by fluid flowing passage 424, and in make position, valve 400 is to close Close and do not allow the flow of fluid by fluid flowing passage 424.In this example, control assembly 454 includes：Slide-valve Bar 410；Inner shaft 412；Driving element 458；Valve member 462；First biasing element 466, the wherein first biasing element 466 is arranged In the cylinder body 428 of valve gap 408 and be operatively coupled to sliding stem 410；And second biasing element, wherein second Biasing element is not shown but is arranged between driving element 458 and valve member 462 (and with inclined with as described above second Put element 170 identical mode to run).Inner shaft 412 couples (for example, fixing) and arrives sliding stem 410.458 turns of driving element And it is operatively coupled to inner shaft 412 via the first connector 470 and the second connector 472.When sliding stem 410 is in outside quilt Activate so that when sliding stem 410 is mobile, inner shaft 412 to be responded by moving in the same manner.This drives first Connector 470 and the second connector 472, these connectors contribute to driving element 458 and the expectation of valve member 462 is moved, such as It is described in more detail below.

As in Figure 14 and Figure 15 best seen from this example, driving element 458 has base portion 474, arm 478 and Cervical region 482.Arm 478 stretches out from base portion 474 and is fixed to and around bar 484, and wherein bar 484 is pivotally arranged at shape Become in the passage 485 in valve body 404, so that driving element 458 is pivotally coupled to valve body 404 and in valve body 404. Bar 484 and passage 485 are generally arranged to make minimize with respect to the rotary motion of valve body 404 and mass motion, thus excellent Change the sealing engagement between valve member 462 and valve seat 450.Cervical region 482 stretches out from the middle body of base portion 474.Although neck Portion is formed with base portion 474, but cervical region 482 can alternatively be coupled to base portion 474 (for example, via securing member).

Referring still to Figure 14 and Figure 15, in this example, valve member 462 takes the form of baffle plate 486, wherein baffle plate 486 There is base portion 490 and a pair of parallel arm 494 (in Figure 14, only one arm is visible).In this example, base portion 490 has There is substantially annular shape, although rectangle or other shapes alternatively can be used.Although being difficult to see that in Figure 14 and Figure 15, It is the periphery restriction along base portion 490 or formation seat passage 498, for receiving and sealingly engaging valve seat 450, to turn off By the flowing (that is, so that closure valve 400) of valve 400.Seating face 498 can be metal, plastics (for example, by elastomeric material system Become) or a combination thereof.Valve member 462 also includes limiting or be formed at the discharge orifice 500 in a part for base portion 490.Discharge orifice 500 are configured to contribute to limited discharge, to contribute to crossing over the pressure equilibrium of valve 400, as will be described below.Show at this In example, discharge orifice 500 is centrally disposed on base portion 490 and by seating face 498 cincture, although in other examples, discharge orifice 500 can be arranged in other places.Arm 494 stretches out from base portion 490 and is fixed to and the different portions around bar 484 Point, so that valve member 462 is pivotally coupled to valve body 404 and as driving element 458 in valve body 404.Although figure Be not explicitly depicted in 14 and Figure 15, but the arm 478 of driving element 458 between the arm 494 of valve member 462 (i.e., radially Ground is inwardly) position at be fixed to bar 484.

As in Figure 14 best seen from, in this example, the first biasing element 466 takes the form of coil spring 512, its Center line coil spring 512 is arranged in the cylinder body 428 of valve gap 408.More specifically, coil spring 512 is arranged in valve gap 408 Top 513 and seat 516 between, wherein seat 516 end relative with jag 430 with valve rod 410 518 is disposed adjacent to.As This arrangement, the first biasing element 466 is configured to make driving element 458 away from the base portion 426 of valve gap 408 and towards valve seat 450 (that is, to make position (see Figure 15)) biasing.

Although being not explicitly depicted herein, the second biasing element of valve 400 structurally and functionally with described above The second biasing element 170 identical.Therefore, the second biasing element of valve 400 takes the form of torsionspring, and this torsionspring has Have first end and second end relative with first end, wherein first end is coupled to a part for driving element 458, the second end around The arm 494 of valve member 462 is fixing.It is arranged so as to, the second biasing element of valve 400 is configured to make driving element 458 and valve Component 462 biases towards each other.

With particular reference to Figure 15, in this example, the first connector 470 takes the form of H-shaped element 520, wherein H-shaped element 520 have (for example, via securing member) be fixed to inner shaft 412 a part 521 and at pivot connection 523 pivotally It is coupled to another part 522 of the second connector 472.When control assembly 454 is in an open position, and for sliding stem The signal portion of 410 traveling stroke, connection element 520 is movably disposed along axis 429.However, working as sliding stem 410 Close to the end points of its traveling stroke, and control assembly 454 near make position when, pivot connection 523 is drawn along slope 524 Lead and supported by slope 524, wherein slope 524 is formed in valve body 404 and extends internally from valve body 404.In Figure 14 Shown, slope 524 limits the path of navigation being at an angle of with respect to axis 429.Path of navigation can be with respect to these axis To be oriented with about 5 degree, about 10 degree, about 15 degree or certain other angle.In any case, because slope 524 defines The path of navigation of slight curvature, the pivot connection 523 therefore being guided by slope 524 is forced along the path of navigation of this bending Advance.

Second connector 472 is typically configured as the translational motion of inner shaft 412 is converted into the rotation of driving element 458 Mobile.In this example, the second connector 472 takes the form of substantially cylindrical shape element 532, and wherein element 532 has Have the one end 536 being pivotally coupled to the first connector 470 at pivot connection 523 and at pivot connection 548 pivot It is coupled to the other end 544 of the cervical region 482 of driving element 458 with turning.It is arranged so as to, when valve 400 is in open position and closure position When moving between putting, connection element 532 pivots around pivot connection 523,548.

In the case of constructing valve 400 as described, valve 400 is configured to：Overflow closing function is provided, and with When provide minimum flowing to limit.Additionally, overflow valve 400 is configured to：In the accident that the pipeline damaging valve 400 downstream occurs In the case of, protect the integrity of valve sealing area and any fluid is included in valve 400.Figure 14 and Figure 15 also will be used for retouching State how overflow valve 400 can realize these functions in operation.

Figure 15 shows valve 400 in its initial make position, is similarly to as described above (and showing in the figure 7 Go out) make position of valve 100, and this generation (that is, do not having when sliding stem 410 not activated by external actuator Apply externally actuated to sliding stem 410).In the case of not having this actuating, control assembly 454 is fixed in make position To, wherein driving element 458 and valve member 462 slightly angled with respect to fluid flowing passage 424 (but perpendicular), Valve member 462 sealingly engages valve seat 450, and driving element 458 and valve member 462 directly contact.Driving element 458 is not only Support valve member 462, but also cover the discharge orifice 500 of valve member 162, thus preventing ingress port 418 and outlet port 422 Between any flow of fluid.Control assembly 454 so orients and is because, the first biasing element 466 by driving element 458 towards Valve seat 450 biases, and driving element 458 and valve member 462 are biased by the second biasing element of valve 400 towards each other.Do not depositing In the case of external actuation force, control assembly 454 is maintained at by this by the bias force that the first and second biasing elements apply and closes Close in position.Additionally, any flow of fluid of control assembly 454 upstream of closure is net by applying to the downside of driving element 458 Power, thus help driving element 458 and valve member 462 are maintained in make position.

As Figure 15 also illustrates that, when valve 400 is in the close position, connection element 520 is with respect to fluid flowing passage 424 To orient at an angle with axis 429, wherein this angle is corresponding with the angle of the path of navigation that slope 524 is limited.Connection Connect the vertical actuation force (and transmitting via valve rod 410 and axle 412) that external actuator applied by element 520 to be converted into transmitting Horizontal axis power to connection element 532.(it is arranged essentially parallel to fluid flowing passage 424 and substantially for connection element 532 Perpendicular to axis 429) apply this horizontal force (that is, in the direction being arranged essentially parallel to fluid flowing passage 424 to valve member 462 Upper applying power), thus keeping valve member 462 and valve seat 450 sealing engagement.Not only connection element 520 helps vertical actuation force Change or using the axial force becoming to make valve member 462 to remain closed, but also because the slope 524 of bending is described above Mode acts on pivot connection 523, therefore control assembly 454 can be made (special using the power less than the power that script needs It is not valve member 462) it is maintained in make position.Stated differently, since the slope 524 of bending, valve rod 410 and axle 412 are not required to Apply to make valve member 462 keep and valve seat 450 sealing engagement with the as many power of power required for routine.In turn, this Can allow using the external actuator less than the external actuator required for script.

However, when external actuator is applied above, to sliding stem 410, the bias force that the first biasing element 466 is applied During external actuation force, (it is not shown, but is analogous to institute above so that valve 400 moves to limited exhaust position for valve rod 410 The limited exhaust position of (and figure 8 illustrates) valve 100 of description) mode moving.More specifically, valve rod 410 are driven upwardly away from valve body 404, and this makes axle 412 also move up.External actuation force will drive up valve rod 410, directly To the end points that valve rod 410 reaches its traveling stroke.At least initially, driving element 458 will move away from and therefore with Valve member 462 separates, till the pressure that the pressure at outlet port 422 is substantially equal at ingress port 418.Occur This situation is because, the pressure being associated with the flow of fluid of valve seat 450 upstream initially exceedes the fluid with valve seat 450 downstream The associated pressure of flowing；Therefore, flow of fluid can apply resulting net force (to the left) to valve member 462, thus keep valve member 462 with Valve seat 450 sealing engagement.Because driving element 458 is moved away from valve member 462, thus not covering discharge orifice 500, fluid Flow (or discharge) by beginning through the discharge orifice 500 being formed in valve member 462 to outlet port 422.This discharge will continue Continuous, till pressure equalizes, thus achieve the pressure at outlet port 422 and be substantially equal to ingress port 418.

When achieving pressure equilibrium, the flow of fluid in valve 400 will no longer apply any significant to valve member 462 Power, so that valve 400 (specifically, control assembly 454) can move to the open position shown in Figure 14.More specifically Ground says, pressure equalize valve member 462 is swung towards driving element 458 in the clockwise direction or rotate and with driving Element 458 contacts.Driving element 458 and valve member 462 subsequently to be arranged at an angle with respect to fluid flowing passage 424. As shown in Figure 14, control assembly 454 (particularly valve member 462) is substantially landed in the outer of fluid flowing passage 424 Portion, the end of wherein only control assembly 454 is arranged in fluid flowing passage 424.Therefore, control assembly 454 (particularly valve structure Part 462) any fluid of flowing provides little restriction in fluid flow passage 424.It is true that this allows valve 400 to have Than the flow coefficient C for known overflow internal valve_vBigger flow coefficient C_v.For example, valve 400 can have about The flow coefficient C of 250-350_v, and known overflow internal valve generally has about 100 flow coefficient C_v.If desired, The size and/or shape of fluid flowing passage 424 can be changed, to increase or decrease flow coefficient C_v.In any case, by carrying Limit for minimum flow of fluid, valve 400 substantially reduces the risk that (if eliminating) cavitates, and wherein cavitation erosion can Occurred using the result upsetting as flowing.

When being in the fully open position shown in Figure 14 when control assembly 454, fluid can be in fluid flowing passage 424 Freely flow to outlet port 422 from ingress port 418.However, in the fluid stream entering valve 400 by ingress port 418 Move in the case of reaching overflow situation, valve 400 (specifically, control assembly 454) moves to row limited as discussed above Put position.As it is known in the art, there is overflow situation when fluid flow meets or exceeds preset limit, generally by process Pressure loss in transmission or control system causes (for example, due to downstream line rupture etc.).This preset limit can example The percentage ratio (for example, 200%) of the capacity as being designed to be processed corresponding to valve 100.In any case, when having reached this During overflow situation, the drag from the fluid entering valve 400 by ingress port 418 will exceed the second biasing element 470 institute The bias force applying, and therefore, this drag will drive valve member 462 in the counterclockwise direction.This drag drives valve structure Part 462 away from driving element 158 (it maintains in the fully-opened position) and towards valve seat 450 and with valve seat 450 sealing engagement.Due to Driving element 458 maintains in the fully-opened position, and therefore the discharge orifice 500 in valve member 462 is exposed, so that limited amount fluid (that is, discharging) can be flowed by discharge orifice 500.

Will be it is realized that due in fully open position, control assembly 454 be substantially landed in the outer of fluid flowing passage 424 Portion, the pressure drop hence across valve member 462 is substantially less than the pressure drop seen in known overflow internal valve.In other words, valve 400 There is the ability providing the overflow capacity higher than known overflow internal valve.

It is repaired in process transmission or control system breakage, thus in the case of mitigating overflow situation, by discharge orifice 500 Limited discharge persistently carry out, until recovered pressure equilibrium till.In other words, control assembly 454 is maintained at discharge position Put, and flow of fluid passes through discharge orifice 500, until the pressure at outlet port 422 is substantially equal at ingress port 418 Pressure.When having recovered pressure equilibrium, valve member 462 is withdrawn into the position shown in Figure 14 by the second biasing element, from And make valve 400 (specifically, control assembly 454) return to fully open position.

Can not be repaired in process transmission or control system or repair process transmits or control system is undesirably In the case of, can be come easily and safely complete by release externally actuated (that is, removing the actuating power being applied to valve rod 410) Full shut-off valve 400.Do not have any externally actuated in the case of, control assembly 454 returns to the closure position shown in Figure 15 Put.More specifically, driving element 458 is mobile and contact with valve member 462 towards valve member 462, and wherein valve member 462 has been Warp and valve seat 450 sealing engagement.This movement of driving element 458 covers discharge orifice 500, thus eliminating by valve 400 Limited discharge and of completely closed valve 400.

Figure 16-Figure 19 shows the lower limit overflow valve being operatively coupled to construct according to principle of the present utility model The actuator 600 of 604 another example.Overflow valve 604 is substantially similar to the overflow valve shown in Figure 13-Figure 15 400, common part is wherein referred to using common reference.

As shown in Figure 16, actuator 600 includes mounting assembly 608, and it is used for not increase hanging down of valve 604 Actuator 612 is installed to valve 604 by the mode of the straight area of coverage.Mounting assembly 608 includes installing sleeve 616 and mounting bracket 620. Sleeve 616 is installed and is removably coupled to valve rod 410 (and therefore, may move also relative to valve body 404).More specifically, The top that sleeve 616 is arranged on the basic portion of cylinder body 428 of valve gap 408 is installed, the upper end 621 of sleeve 616 is wherein installed It is fixed to the jag 430 of valve rod 410 via securing member 617；If desired, will be able to be pacified by removing securing member 617 Sleeved 616 is decoupling with valve rod 410.In any case, when installation sleeve 616 is coupled to valve rod 410 in the manner described, Valve rod 410 moves up or down together with installing sleeve 616, so that the movable lifting of sleeve 616 or reduction valve rod 410. Meanwhile, mounting bracket 620 (for example, via securing member) is detachably fixed to the base portion 426 of valve gap 408.When mounting bracket 620 When being fixed to valve gap 408, mounting bracket 620 is fixing with respect to valve body 404, so that installing sleeve 616 with respect to mounting bracket 620 may move.

Also illustrate that as in Figure 16, mounting assembly 608 also includes a pair of arm 618A, 618B, wherein arm 618A, 618B Direction perpendicular to the length of sleeve 616 stretches out.First arm 618A is coupled to mounting bracket 620 and from installation Support 620 stretches out, and the second arm 618B is coupled to the part of close upper end 621 installing sleeve 616 and from this portion Divide and stretch out.Therefore will be it is realized that at least in this example, the second arm 618B is with respect to mounting bracket 620 (and valve body 404) may move, and the first arm 618A is irremovable with respect to mounting bracket 620 (and valve body 404).

Actuator 612 is the adjustable damping device with cylinder body 622 and a pair of tubulated ends 624.Although figure Not shown in 16, but cylinder body 622 has the entrance being suitable to receive pressure source, so that cylinder body 622 is permissible It is pressurized to open valve 600.Cylinder body 622 includes the first main part 623A and the second main part 623B, and wherein second is main Body 623B is telescopically bonded in the first main part 623A.First main part 623A is coupled in tubulated ends 624 one Individual end (for example, being integrally formed therewith), and the second main part 623B is coupled to another end in tubulated ends 624 (for example, being integrally formed therewith).As shown in Figure 16, each end in tubulated ends 624 limits opening, described opens The size of mouth is configured to：When actuator 612 is installed to valve 604 via mounting assembly 608, receive in arm 618A, 618B A corresponding arm.The opening of the tubulated ends 624 of the first main part 623A receives arm 618A, and the second main part The opening of the tubulated ends 624 of 623B receives arm 618B.By this arrangement, in response to via entrance to cylinder body 622 Pressurization, the second main part 623B can move with respect to the first main part 623A, to increase or to reduce cylinder body 622 Interior zone.

Although being described as being substantially similar to overflow valve 400 by overflow valve 604 above, flow valve 604 is in two masters Want aspect different from flow valve 400.First, valve 604 includes the units that contribute to limited discharge different from valve 400.It is different from Valve 400 (it includes the openable discharge orifice of selectivity 500), valve 604 includes discharging mechanism 650, and wherein discharging mechanism 650 includes Discharge orifice 654 and check-valves or drain valve 658, go out as shown in figs. 17 and 18.Discharge orifice 654 limits or is formed at valve In the interior section of base portion 490 of valve member 462, and drain valve 658 be arranged in adjacent with discharge orifice 654 (for example, right with it Accurate) position at the interior section of base portion 474 of driving element 458 in.When higher pressure fluid is captured on sealing During the downstream of valve seat 450, discharging mechanism 650 passes through through drain valve 658 exhaust fluid, to contribute to back pressure release.Citing and Speech, when being captured on the steam that the fluid in downstream of valve seat 450 becomes elevated pressures, discharging mechanism 650 row of can aid in Put.Discharging mechanism is favourable, this is because which reducing (if eliminating) to the downstream being arranged on flow valve 604 Extra bleeder valve demand (for example, when the downstream fluid being captured becomes the steam of elevated pressures).Second, flow valve 604 include one or more instrument ports (gauge port) 662, and wherein instrument port 662 allows end subscriber monitoring to cross over valve 604 pressure drop, such as to determine blocking.Flow valve 604 shown in Figure 17 and Figure 18 includes a pair of instrument port 662, One of instrument port and entrance 418 are disposed adjacently, and an instrument port is disposed adjacently with outlet 422.However, In other examples, flow valve 604 can only include a this instrument port.Anyway, when instrument port 662 is not used in During monitoring pressure, instrument port 662 can be clogged.

Different despite these, but valve 604 can operate in the way of similar to valve 400.Figure 16 and Figure 17 illustrates Valve 604 is in the close position, and it is substantially similar to the make position of valve 400.However, here, when expectation by valve 604 from this When make position moves to open position (it is substantially similar to the open position of valve 400) shown in Figure 18, can be right Actuator 612 pressurizes (for example, via the entrance of main body 622).Pressurization to actuator 612 makes the second main part 623B relatively Move up (at least in figure 16) in the first main part 623A, thus extending actuator main body 622, this erection ＆ lift sleeve 616 (it is coupled to the second main part 623B), and then poppet stem 410 (it is coupled to sleeve 616).In this way to valve The actuating of bar 410 makes driving element 458 and valve member 462 move to shown in Figure 18 from the make position shown in Figure 17 Open position.On the contrary, by reducing pressure to actuator 612, valve 604 can move back to make position from open position.To cause The decompression of dynamic device 612 makes the second main part 623B move down (at least in this example) with respect to the first main part 623A, So that actuator body 622 contracts back to the position shown in Figure 16, this reduces installation sleeve 616, and (it is coupled to second Main part 623B), and then reduce valve rod 410.In this way driving element 458 and valve member are made to the actuating of valve rod 410 462 open positions shown in Figure 18 move back to the make position shown in Figure 17.Figure 19 shows and exists when valve 400 The part of control assembly 454 when closure and both open positions are middle.

Will additionally appreciate, valve 400 and/or valve 604 can be different and still carry out expected function.Valve body 404, valve gap 408th, valve rod 410, axle 412 and/or disconnect axis mechanism 432 can from shown different and still carry out expected function. More specifically, the shape of valve body 404, size and/or pattern can be different.In one example, for example when expectation has When in the varying environment of various sizes of tank and/or pipeline using overflow valve 400, entrance connecting portion 416 and/or outlet connections 420 shape and/or size can be different.In some instances, axle 412 can be arranged in a different manner, for example, along Different axis orientation or be located relative to the different position of flow path (for example, further away from each other outlet port 422).Replace Generation ground or additionally, the construction of control assembly 454 and/or activate can from shown different and still carry out expected work( Energy.In other examples, the shape of driving element 458 and/or valve member 462 and/or size can be different, for example to change The overflow capacity of valve, changes necessary actuating power and/or bias force, or for some other reason.In other examples, drive Dynamic element 458 and valve member 462 can be operatively coupled to valve rod 410 and axle 412 in a different manner.For example, as in Figure 20 Shown, can be using 2 linkages 670 rather than the connection element 472 with slide contact part 674.Certainly, guiding is slided The shape of the slot of connecting portion can different (for example, it is possible to adjusting angles), to change corresponding relation and the row of stroke and power Journey and the corresponding relation of opening.

Although not describing in detail, each of Figure 21, Figure 22 and Figure 23 respectively illustrate according to of the present utility model The overflow valve 700,800 and 900 of the replacement of one or more aspect constructions.Overflow valve 700,800 and 900 is with similar to institute above The mode of the overflow valve 100,400 and 604 of description is operating.

Finally by it is realized that any overflow valve in overflow valve described herein can include part described herein And/or herein be not explicitly depicted multiple other parts various combinations.For example, any excessive in described overflow valve The valve body of stream valve can include instrument port, and this instrument port allows end subscriber execution to reveal test.Lift another example, retouched Any overflow valve in the overflow valve stated can include being arranged on the flow filter at ingress port and/or outlet port, with Just reduce the amount of the solid impurity in process transmission or control system.Furthermore, it is possible in driving element 158 and valve member 162 weeks Enclose the one or more different components of introducing, so that completing opening action using " pressure balance " component.In an example In, pressure balance component can take the form of piston, and wherein piston abuts slidably against valve member 162 and arranges and initial Be only exposed to inlet pressure, but once piston slides through valve member 162 (see Figure 16), piston allow for flow.Another In one example, pressure balance component can be taken the form of butterfly-type element, wherein butterfly-type element and allow for flowing once pivoting. In another example, pressure balance component can take the form of flat elements, and wherein flat elements are sliding on valve member 162 Dynamic.In any case, by using one or more different pressure balance components, this eliminates needs in a balanced way to initial pressure Ask, this is because opening valve member be almost at static equilibrium after opening pressure balance component.

Based on described above it should be appreciated that valve described herein provides safely effectively overflow closing function, But complete this function in the case that minimal flow limits, so that flowing upsets and cavitation erosion minimizes (without elimination If), wherein flowing is upset and cavitation erosion is the problem being caused by known overflow valve, particularly when known overflow valve is arranged on When in pump supply connection.Valve described herein also has disconnection security feature, and this feature is in the thing of downstream line that is damaged Therefore in the case of contribute to turn off, this be used for protect valve sealing area integrity and by fluid-tight be included in valve with And the upstream of valve.

Claims

1. a kind of shut-off valve for fluid transmission or stocking system, including：

Valve body, described valve body limits ingress port, outlet port and the fluid stream extending between described entrance and described outlet Dynamic passage；

Valve seat, described valve seat is arranged in described valve body and neighbouring described outlet port；

Axle, described axle is at least partially disposed in described valve body；

Driving element, described driving element is arranged in described valve body and is coupled to described axle；And

Valve member, described valve member is arranged in described valve body and is operatively coupled to described axle, and described valve member can be Move between make position and open position, described valve member sealingly engages described valve seat to seal in described make position State outlet port, described valve member leads to away from described outlet port and substantially in described flow of fluid in described open position The outside in road, so that described valve member provides minimum flowing to limit to flowing by the fluid of described fluid flowing passage.

2. shut-off valve according to claim 1 is it is characterised in that described valve member is in response to being led to by described flow of fluid The fluid flow in road is more than preset limit and automatically moves to described make position.

3. shut-off valve according to claim 2 is it is characterised in that described valve member includes discharge port, described discharge end Mouth is configured to：When being more than described preset limit by the described fluid flow of described fluid flowing passage, promote to pass through institute State fluid flowing passage to be discharged.

4. shut-off valve according to claim 1 it is characterised in that described driving element be arranged on the outer wall of described valve body with Between described valve member.

5., it is characterised in that also including the first biasing element, described first biasing is first for shut-off valve according to claim 1 Part is arranged between described driving element and described valve body, and described first biasing element is configured to described to make position biasing Driving element.

6., it is characterised in that also including the second biasing element, described second biasing is first for shut-off valve according to claim 5 Part is arranged to make described driving element and described valve member bias towards each other.

7. shut-off valve according to claim 1 is it is characterised in that described aixs cylinder goes out the outside in described valve body and is suitable to It is coupled to the external actuator for controlling described axle.

8. shut-off valve according to claim 7 is it is characterised in that described axle can be substantially perpendicular to described fluid stream The near axis of dynamic passage move.

9. shut-off valve according to claim 8 be it is characterised in that described axle can rotate around described axle, and wherein, institute State valve member and include swing type valve member.

10. shut-off valve according to claim 8 is it is characterised in that described axle can slide along described axis.

11. shut-off valves according to claim 1 are it is characterised in that also include the actuator for adjusting overflow capacity, institute State actuator to be configured to engage described drive member to change the position of the described drive member being in described make position.

A kind of 12. shut-off valves for fluid transmission or stocking system, including：

Valve body, described valve body limits ingress port, outlet port and extends between described ingress port and described outlet port Fluid flowing passage；

Axle, described axle is at least partially disposed in described valve body；And

Control assembly, described control assembly is arranged in described valve body and is operatively coupled to described axle, described control assembly Can move between make position and open position, described control assembly sealingly engages described valve seat in described make position To seal described outlet port, described control assembly is in described open position away from described outlet port and substantially described The outside of fluid flowing passage, so that described control assembly provides minimum to flowing by the fluid of described fluid flowing passage Flowing limit.

13. shut-off valves according to claim 12 are it is characterised in that described control assembly includes driving element and valve structure Part, described driving element is configured to respond to the actuating of described axle and moves described valve between make position and open position Component, described valve member sealingly engages described valve seat to seal described outlet port, described valve member in described make position In described open position away from described outlet port.

14. shut-off valves according to claim 12 are it is characterised in that described valve member is in response to by described flow of fluid The fluid flow of passage is more than the overflow capacity of described shut-off valve and automatically moves to described make position.

It is characterised in that also including the first biasing element, described first biases 15. shut-off valves according to claim 12 Element is arranged between described driving element and described valve body, and described first biasing element is configured to bias institute to make position State driving element.

It is characterised in that also including the second biasing element, described second biases 16. shut-off valves according to claim 15 Element is arranged to make described driving element and described valve member bias towards each other.

17. shut-off valves according to claim 12 are it is characterised in that described axle can be around being substantially perpendicular to described fluid The axis rotation of flow channel.

18. shut-off valves according to claim 12 are it is characterised in that described axle can be along being substantially perpendicular to described stream The axis of body flow channel slides.

It is characterised in that also including slope, described slope is arranged in described valve to 19. shut-off valves according to claim 18 In body, described slope limits to be at an angle of, with respect to described axis, the path of navigation to orient, and wherein, described axle is via by described The connection element of slope guiding is coupled to described control assembly.

A kind of 20. shut-off valves for fluid transmission or stocking system, including：

Axle, described axle is at least partially disposed in described valve body；

Driving element, described driving element is arranged in described valve body and is coupled to described axle；

Valve member, described valve member is arranged in described valve body and is operatively coupled to described axle, and described valve member can be Move between make position and open position, described valve member sealingly engages described valve seat to seal in described make position State outlet port, described valve member leads to away from described outlet port and substantially in described flow of fluid in described open position The outside in road, so that described valve member provides minimum flowing to limit to flowing by the fluid of described fluid flowing passage； And

Disconnect release mechanism, described disconnection release mechanism include between described outlet port and described valve seat, be formed at institute State the circumferential passageway in valve body.