CN206738582U

CN206738582U - Inner valve and internal valve system

Info

Publication number: CN206738582U
Application number: CN201720232842.9U
Authority: CN
Inventors: 陈静; L·李; 季菲菲
Original assignee: Emerson Process Management Regulator Technologies Inc
Current assignee: Emerson Process Management Regulator Technologies Inc
Priority date: 2017-03-10
Filing date: 2017-03-10
Publication date: 2017-12-12
Anticipated expiration: 2027-03-10
Also published as: CN206738582U8

Abstract

It the utility model is related to inner valve and internal valve system.Valve rod that inner valve includes being arranged in valve body, it is couple to the poppet of valve rod and dump valve is couple to valve rod.The 3rd position that valve rod can be moved to the second place of dump valve opening from the first position that poppet and dump valve are all closed and dump valve is closed and poppet is opened, and poppet can move closing in response to pressure change.Valve body includes shoulder, and shoulder is arranged for being sealingly engaged with vessel flange, and is spaced apart between the entrance and flange of valve body and with entrance, and shoulder is arranged on valve body, at the desired distance for the inwall that entrance is disposed away to fluid container.

Description

Inner valve and internal valve system

Technical field

Briefly, present disclosure is related to inner valve, and more specifically, is related to and is arranged such that entering for inner valve Mouth can be located at from the inner valve at the desired distance of container feed entrance.

Background technology

Inner valve is used for various commercial and industrial applications, to control in fluid-storing container and another container, flexible pipe, pipe Flow of fluid between road etc..Especially, inner valve can prevent hazardous material, compressed liquid and gas (such as propane, butane And NH₃(anhydrous ammonia)) discharge, when shifting this material between the first location and the second location.Inner valve is using flowing Controlling organization, its unexpected overflow situation in response to the flow path due to for example rupturing, cutting off or otherwise damaging And close.It is this flowing controlling organization be commonly referred to as poppet or overflow valve, be commonly used for need in response to it is potential leakage or The spilling of potential danger fluid and automatically, safely block in the application of flow of fluid.

Poppet is typically based on the pressure differential across inner valve to operate.For example, when inlet pressure is substantially equal to outlet pressure When, poppet is opened.Before main valve is opened, generally use dump valve is carried out balanced or balance across flow control components by inner valve Pressure.In one example, inner valve can be with the entrance of large-scale storage tank or outlet, and prevents tank due to excessive Interior pressure tank and rupture.Dump valve allows tank to discharge or discharge gas-pressurized by exhaust flow path, and eventually through carrying Lift valve, until pressure tank drops to acceptable level before valve is opened completely.

Utility model content

In view of there are shortcomings in inner valve of the prior art, according to the first illustrative aspect, for for being connected to For the inner valve of fluid container, fluid container has opening, inwall and is fed into the distance of spaced apart from inner walls first Mouthful, the opening is surrounded by mounting flange, and the inner valve can include the valve body with upper part, the upper part It is dimensioned to be adapted to extend through the opening in the fluid container.The valve body can have upper part, institute State the opening being dimensioned to be adapted to extend through in fluid container of upper part.The valve body can include entrance And outlet.The valve body can include flange, and the flange, which is arranged to, allows the valve body directly to pacify via flange fastener It is attached to the mounting flange of the container.The valve body can include the valve rod being slidably disposed in the valve body.It is interior Portion's valve can include poppet, and the poppet includes poppet body, and the poppet body is operatively coupled to by the first spring It is arranged to open and close the valve body to the valve rod and including lifting valve inlet and lifting valve outlet, the poppet Entrance.The inner valve can include dump valve, the dump valve be operatively coupled to the valve rod and be arranged to open and Close the lifting valve inlet.The inner valve can include actuator, and the actuator is operatively coupled to the valve rod, and And opened suitable for the valve rod is moved into the dump valve from the first position that the poppet and the dump valve are all closed The second place and the dump valve close and poppet open the 3rd position.When the valve rod is in three positions, ring Should be in pressure change, the poppet can be arranged to close, and the dump valve can be arranged to open.The valve body can With including the shoulder for being arranged for being sealingly engaged with the mounting flange.The shoulder can be arranged on the described of the valve body It is spaced apart between entrance and the flange and with the entrance.The shoulder can be arranged on the valve body, with described Inner valve when being connected to the fluid container entrance be placed on away from the fluid container the inwall second At distance, the second distance is less than first distance.

According to the second illustrative aspect, internal valve system can include fluid container, and the fluid container has opening, interior Wall and the feed entrance with the distance of spaced apart from inner walls first, the opening are surrounded by mounting flange.The internal valve system Inner valve can be included.The inner valve can include the valve body with upper part, and the size of the upper part is set Into the opening being adapted to extend through in the fluid container.Valve body can have upper part, the chi of the upper part The very little opening for being configured to be adapted to extend through in the fluid container.The valve body can include an inlet and an outlet.Institute Flange can be included by stating valve body, and the flange, which is arranged to, allows the valve body to be mounted directly to the appearance via flange fastener The mounting flange of device.The valve body can include valve rod, and the valve rod is slidably disposed in the valve body.In described Portion's valve can include poppet, and the poppet includes poppet body, and the poppet body is operatively coupled to by the first spring To the valve rod and including lifting valve inlet and lifting valve outlet, the poppet, which is arranged to, opens and closes the valve body The entrance.The inner valve can include dump valve, and the dump valve is operatively coupled to the valve rod and is arranged to Open and close the lifting valve inlet.The inner valve can include actuator, and the actuator is operatively coupled to described Valve rod, and beaten suitable for valve rod is moved into the dump valve from the first position that the poppet and the dump valve are all closed The second place opened and the 3rd position that the dump valve is closed and the poppet is opened.When the valve rod is in the described 3rd During position, in response to pressure change, the poppet can be arranged to close, and the dump valve can be arranged to open. The valve body can include being arranged to the shoulder being sealingly engaged with the mounting flange.The shoulder can be arranged on the valve body The entrance and the flange between and be spaced apart with the entrance.The shoulder can be arranged on the valve body, with When the inner valve is connected to the fluid container, the entrance is placed on the inwall away from the fluid container Second distance at, the second distance is less than first distance.The internal valve system can include outlet, it is described go out Mouth pipe is arranged for being connected to the valve body in the outlet adjacent with the valve body.

Further any one or more in aforementioned first aspect and second aspect, the internal valve components and/ Or inner valve can also include any one or more of following preferred form.

In a preferred form, the shoulder can have the diameter of the diameter of the flange less than the valve body, and The flange of the valve body can be arranged to receive multiple flange fasteners, and the multiple flange fastener may be coupled directly to The mounting flange of the fluid container.

In a preferred form, the valve body can be arranged for being connected in the outlet adjacent with the valve body Outlet, and the outlet can be fixed to the valve body by the multiple flange fastener.

In a preferred form, the flange of the valve body can include multiple apertures to receive the multiple flange fastening Part, and the mounting hole that the multiple aperture can be arranged in the mounting flange with the fluid container is aligned.

In a preferred form, the valve body can include upper part, and the upper part has a diameter and size It is configured to be adapted to extend into the opening of the fluid container, the diameter of the upper part of the valve body is less than institute State the diameter of the opening of fluid container, so as to the valve body the upper part with being opened described in the fluid container Clearance space is formed between mouthful.

In a preferred form, the upper part of the valve body can include installation region and filter, the filter At least a portion around the poppet and the dump valve is dimensioned to, the filter includes extension, institute State being dimensioned to be positioned in the clearance space and being arranged to be fixed to the peace by fastener for extension Fill region.

In a preferred form, first spring can be overflow spring, and the overflow spring includes supporting via spring base The Part I being supported by the Part I of the valve rod, the overflow spring include being propped up against the poppet body The Part II of support, and the inner valve can also include being arranged on second spring in the valve body, the second spring It is couple to the valve rod and is arranged towards the first position and biases the valve rod, and at least the one of the overflow spring Part can be nested in the inside of the second spring.

In a preferred form, the poppet can include valve seat and valve disc, and the dump valve can include valve seat and valve Disk, and when the valve rod is in the first position, the valve seat and valve disc of the dump valve can be arranged on the lifting Above the valve seat and valve disc of valve.

In a preferred form, the poppet can include valve seat and valve disc, and the dump valve can include valve seat and valve Disk, overflow spring can be arranged on above the valve seat of the dump valve, and when the valve rod is in the first position, institute Stating the valve seat of dump valve and valve disc can be arranged on below the valve seat and valve disc of the poppet.

In a preferred form, the shoulder of the body can be the upper face of the flange of the valve body.

The actuator of the inner valve proposed according to the utility model can be the rotatable driving of automatic or manual operation Mechanism or linear driving mechanism, it is arranged between first position, the second place and the 3rd position mobile valve rod.In addition, Another embodiment of valve can include additional operating position, wherein, valve rod is moved to first position, second by actuator Put and the 3rd position in any two position between position.Such additional operations position, dump valve and lifting Valve can be opened.

Brief description of the drawings

Fig. 1 is section form, shows being constructed according to the training centre of the of the present utility model first open example and have There is the inner valve of poppet and dump valve and show and be attached to fluid container and fluid container is operatively coupled to pipeline The inner valve system diagram.

Fig. 2 is to illustrate in greater detail the inner valve of Fig. 1 and exemplified with valve rod the putting in first position of inner valve Heavy in section figure, wherein poppet and dump valve are all closed.

Fig. 3 is the inner valve of Fig. 2 and shows that valve rod is in the sectional view of the second place, in the second place, Dump valve is opened and poppet is closed.

Fig. 4 is the inner valve of Fig. 2 and shows that valve rod is in the sectional view of the 3rd position, in the 3rd position, Dump valve is closed and poppet is opened.

Fig. 5 is the internal valve components of Fig. 2 and shows that valve rod is in the 3rd position but poppet moves towards closed position And the sectional view for opening dump valve.

Fig. 6 A are the sectional views of Fig. 2 internal valve components, and it also includes filter, and the filter, which has, to be arranged to by tight Firmware is fixed to the extension of the installation region of valve body.

Fig. 6 B are the perspective views for showing the filter of Fig. 6 A and illustrating extension in more detail.

Fig. 7 is the equidistant cross-sectional view of the inner valve with two springs (overflow spring and second spring), overflow spring A part be nested in inside second spring.

Fig. 8 is the isometric sectional view of inner valve, wherein, when valve rod is in first position, the valve seat of dump valve and valve disc are set Put below the valve seat and valve disc of poppet.

Embodiment

Although hereafter text elaborates the detailed description to one or more exemplary embodiments of the present utility model, It should be appreciated that the scope of law of the present utility model is limited by the word of the claim illustrated at the ending of this patent.Hereafter Detailed description be to be interpreted as being merely exemplary and and non-depicted each possible embodiment of the present utility model because Even if each possible embodiment of description is not impossible but is unpractical.Current techniques or special at this can be used The technology developed after the applying date of profit realizes many alternate embodiments, and these alternate embodiments will fall into restriction this In the range of the claim of utility model.

Fig. 1 is exemplified with the example internal valve system 300 including outlet 132, fluid container 131 and inner valve 100.Stream Body container 131 includes the feed entrance 308 of opening 302, inwall 306 and the conduit 134 surrounded by mounting flange 304, wherein, enter Material entrance 308 is spaced apart the first distance D1 with inwall 306.Also referred herein as the inner valve 100 of internal valve components includes lifting Valve 102, dump valve 104, valve rod 106, actuator 108 and valve body 110.Valve body 110 includes entrance 112, exports 114, and Major fluid flow path 116 is limited between entrance 112 and outlet 114.

Valve rod 106 is slidably disposed in valve body 110.Poppet 102 is arranged to pressure and/or stream based on system Body flow rate opens and closes the entrance 112 of valve body 110, wherein, inner valve 100 is coupled to or installed within the system.Carry Lift valve 102 includes poppet body 312, and it is operatively coupled to valve rod 106 by second spring 146.Poppet body 312 includes carrying Lift valve entrance 314 and lifting valve outlet 316.In high-pressure environment, it may be necessary to fluid be pumped through inner valve 100 it Pressure between forward horizontal stand upstream fluid source and downstream fluid source or fluid container.This equilibrium can by dump valve 104 come Realize, dump valve 104 is arranged to opening and closing lifting valve inlet 314.Dump valve 104 includes exits valve body 118, dump valve Body 118 has discharge entrance 120, discharge outlet 122 and the discharge being limited between discharge entrance 120 and discharge outlet 122 Flow path 124.Valve rod 106 is slidably disposed in exits valve body 118, and is operatively coupled to dump valve 104 and is caused Dynamic device 108.

Actuator 108 is operatively coupled to valve rod 106.Actuator 108 is suitable for valve rod 106 from poppet 102 and is discharged The first position that valve 104 is all closed is moved to the second place of the opening of dump valve 104 and dump valve 104 is closed and poppet 102 the 3rd positions opened.When valve rod 106 is in three positions, in response to pressure change, poppet 102 is arranged to pass Close and dump valve 104 is arranged to opening.

Inner valve 100 may be mounted so that the Part I of the valve 100 or upper part 126 are arranged to and first Or upstream fluid source (such as fluid container 131) is in fluid communication, at first or upstream fluid source, relatively high force process fluid It can be introduced into.The opening 302 being dimensioned to be adapted to extend through in fluid container 131 of upper part 126.Valve 100 Part II or low portion 128 be arranged to and second or downstream fluid source (such as outlet 132) be in fluid communication, it is internal Valve 100 provides it process fluid.Valve body 110 includes flange 130, and flange 130 is used for inner valve via flange fastener 310 100 to be mounted directly to the mounting flange 304 of fluid container 131 and be additionally operable to inner valve 100 being installed to outlet 132, go out Mouth pipe 132 can be arranged in pipe-line system, storage tank, gas-tanker system or any other appropriate fuid distribution system.

The Part I 126 of inner valve 100 including whole dump valve 104 can be dipped into the fluid of relatively high force Or surrounded by the fluid of relatively high force.Part II 128 can be arranged on the outside of fluid container 131, with valve body 110 Export and outlet 132 (such as pipe, flexible pipe or any other appropriate conduit) is received at 114.Process fluid can hold from fluid Device 131 flows via conduit 134 (such as flexible pipe) and flows through inner valve 100.When dump valve 104 is opened, process streams Body can flow through exhaust flow path 124 and main flow path 116, by the outlet 114 of valve body 110 and flow to outlet Pipe 132.When poppet 102 is opened, process fluid can flow through entrance 112, by major fluid flow path 116, and Flow out the outlet 114 of valve body 110.

Valve body 110 includes being arranged to the shoulder 318 being sealingly engaged with the mounting flange of fluid container 131 304.Shoulder 318 are arranged between the entrance 112 of valve body 110 and flange 130.Shoulder 318 is spaced apart with entrance 112, and is disposed in valve On body 110, so that entrance 112 is placed in into the inwall 306 from fluid container 131 when internally valve 100 is connected to fluid container 131 In place of two distance D2.Second distance between entrance 112 and inwall 306 is less than the feed entrance 308 and inwall 306 of conduit 134 Between the first distance.

Shoulder 318 has the diameter D4 of the flange 130 less than valve body 110 diameter D3.So shoulder 318 does not interfere flange Connection between 130 and mounting flange 304, and the flange 130 of valve body is arranged to the multiple flange fasteners 310 of reception, should Multiple flange fasteners 310 may be coupled directly to the mounting flange 304 of fluid container 131.It is this that be directly connected to can be with a variety of Mode is realized.In the arrangement that Fig. 1 describes, fastened because the flange 130 of valve body includes multiple apertures 320 with receiving multiple flanges Part 310 and multiple apertures 320 are arranged to be aligned with the mounting hole 322 in the mounting flange of fluid container 131 304, institute It is directly connected to producing.Valve body 110 is arranged to be connected to outlet 132 in the adjacent of outlet 114 with valve body 110, and goes out Mouth pipe 132 also can be fixed to valve body 110 by multiple flange fasteners 310.

As shown in figure 1, at least one be dimensioned to around poppet 102 and dump valve 104 of filter 324 Point.The upper part 126 of valve body 110 has diameter D5, and be dimensioned to be adapted to extend into opening 302 with around At least a portion of poppet 102 and dump valve 104.The diameter D5 of the upper part 126 of valve body is less than opening for fluid container 131 The diameter D6 of mouth 302.Therefore, it is empty that gap is formed between the upper part 126 of valve body 110 and the opening 302 of fluid container 131 Between.The upper part 126 of valve body includes installation region 326.Filter 324 includes extension 328, and it is fixed to be dimensioned to Position is in clearance space and is arranged to be fixed to installation region 326 by fastener 330.

Fig. 2 is exemplified with the additional details on inner valve 100.Actuator 108 includes being couple to rotatable cam 222 Bar 220, rotatable cam 222 make cam 222 be rotated around axis D, to engage the bottom 140 of valve rod 106 and in axial side Move up valve rod 106.Although the actuator 108 in illustrated example includes rotatable bar 220 and cam 222, this public affairs The internal valve components 100 for opening content are not limited to illustrated actuator arrangement.For example, in other embodiments, actuator 108 can To be the rotatable drive mechanism or linear driving mechanism of automatic or manual operation, it is arranged in first position, second Put the mobile valve rod 106 between the 3rd position.In addition, another embodiment of valve 100 can include additional operating position, its In, valve rod 106 is moved between any two position in first position, the second place and the 3rd position by actuator 108 Position.Such additional operations position, dump valve 104 and poppet 102 can be opened.

As illustrated in fig. 2, poppet 102 also includes valve seat 160 and valve disc 168.Similarly, dump valve 104 includes valve seat 208 (referred to herein as discharge seats 208) and valve disc 204 (referred to herein as discharge tray 204).In the arrangement of fig. 2, When valve rod 106 is in first position, the valve seat 208 and valve disc 204 of dump valve 104 are arranged on the He of valve seat 160 of poppet 102 The top of valve disc 168.Illustrated in such as Fig. 6 A and in other arrangements for being discussed below, the valve seat 208 and valve disc of dump valve 104 204 can be arranged on the valve seat 160 of poppet 102 and the lower section of valve disc 168.

The function of internal valve components 100 and operation will be described in four continuous operative configurations：Closing structure shown in Fig. 2 Make, the injection discharge construction shown in Fig. 3, the open configuration shown in Fig. 4 and the restricted discharge shown in Fig. 5 construct.Valve 100 Operative configuration can be selected by actuator 108, actuator 108 is operatively coupled to the bottom 140 of valve rod 106.Actuator 108 Suitable for the mobile valve rod 106 between first position, the second place and the 3rd position.Valve rod 106 can be along the vertical of inner valve 100 Axle A moves along the axis parallel to longitudinal axis A.When valve rod 106 is in first position, poppet 102 and dump valve 104 All close and actuator 108 is not engaged or is connected with the bottom 140 of valve rod 106.Second or close spring 146 be arranged to by Inner valve 100 is biased in closed position.Relative with bottom 140, the top 144 of valve rod 106 is operatively coupled to dump valve 104, Actuator 108 enable by moving valve rod 106 along longitudinal axis A to control dump valve 104.First or the quilt of overflow spring 148 It is arranged to bias poppet 102 between an open position and a closed with fluid-responsive pressure change.Following article will enter one As step describes in detail, the first spring 148, which is arranged to, makes poppet 102 be moved towards closed position, and is arranged to Dump valve 104 is opened when valve rod 106 is in three positions.

The valve body 110 of inner valve 100 surrounds second spring 146 and a part for valve rod 106.Second spring 146 can be Spring is closed, and is operatively coupled to valve rod 106, and is arranged in upper offset valve rod 106 in downward direction and is carried with closing Lift valve 102 and dump valve 104.Second spring 146 provides downward elastic force to valve rod 106, promotes valve rod 106 to occupy shown in Fig. 2 First position.Second spring 146 is maintained between the first spring base 152 of valve body 110 and interior shoulder 156.In addition, valve Body 110 defines susceptor surface or valve seat 160 at entrance 112, and entrance 112 leads to aperture 164, and aperture 164 is by upstream fluid Source is connected to major fluid flow path 116.When poppet 102 is in an open position, major fluid flow path 116 is based upon Between entrance 112 and outlet 114.

Poppet 102 is couple to valve body 110 and the entrance 112 suitable for opening and closing valve body 110.Poppet 102 is also It is operatively coupled to exits valve body 118.When poppet 102 is opening pass of the open position of entrance 112 with closing entrance 112 When being moved between closed position, exits valve body 118 moves toward and away from the entrance 112 of valve body 110.In other words, illustrated Inner valve 100 example in, exits valve body 118 is inherently a part for the operation of poppet 102.In illustrated example In, exits valve body 118 is depicted as disc type valve module, and the disc type valve module includes or the valve disc 168 with poppet 102, valve Disk 168 engages valve seat 160 and passes through valve body 110 to limit flow of fluid.Poppet 102 can be in Fig. 4 valve disc 168 and dump valve The closed position that open position that body 118 is spaced apart with valve seat 160 and the valve disc 168 in Fig. 2,3,5 are taken a seat against valve seat 160 it Between move.The valve disc that valve disc 168 is couple to exits valve body 118 by one or more fasteners 180 by valve disc retainer 172 presss from both sides Holder part 176.

Dump valve 104 is couple to valve rod 106 and has the hole for accommodating the first spring 148 including valve body 118, valve body 118 184.First spring 148 can be overflow spring and be arranged to towards susceptor surface 160 bias exits valve body 118, with Flow rate (such as the overflow limitation of the valve 100 or speed) time limit specify or predetermined is exceeded by the flow rate of valve 100 Flow of fluid processed passes through hole 164.First spring 148 includes bottom 190 and top 192, and is maintained at second spring seat 194 Between keeping shoulder 196, shoulder 196 is kept to be limited by hole 184 and cylindrical part 198.The top 192 of first spring 148 It is supported against holding shoulder 196, and the bottom 190 of the first spring 148 is supported against second spring seat 194.The Two spring bases 194 are operatively coupled to valve rod 106 so that the second bullet when valve rod 106 moves in the axial direction along longitudinal axis A Spring abutment 194 moves with valve rod 106.Spring base 194 limits at least one of the flow orifice 210 being arranged in exhaust flow path Point, it allows the fluid communication between discharge entrance 120 and discharge outlet 122.Discharge port 200 can be with exits valve body 118 are integrally formed, and can specifically be defined as the opening formed by the cylindrical part 198 of exits valve body 118.Row Exit port 200 is arranged in exhaust flow path 124, and fluidly connects discharge entrance 120 and hole 184, and hole 184 Fluidly connect discharge entrance 120 and discharge outlet 122.Discharge tray 204 can be in discharge tray 204 and discharge seat 208 and outlet side The opening drain positions (as shown in Figure 2 and Figure 4) spaced apart of mouth 200 are arranged with the closing that discharge tray 204 is taken a seat against discharge seat 208 Out position moves between (as shown in figures 1 and 3), so as to which discharge port 200 and upstream fluid source be sealed.Sum it up, carry Lift valve 102 and dump valve 104 form inner valve 100.

Fig. 2 is turning now specifically to, inner valve 100 is in first or shutoff operation construction.In closed configuration, poppet 102 is in the closed position, and dump valve 104 be in close drain position so that outlet 114 with upstream fluid source seal every From.By the valve disc 168 that exits valve body 118 carries by the first spring 148 and/or the pressure in the upstream fluid source for passing through entrance 112 Power is towards closed position.The discharge tray 204 of dump valve 104 is arranged by second spring 146 via valve rod 106 towards closing Out position biases.When poppet 102 and dump valve 104 are all closed, it is dynamic logical to prevent fluid flow that valve disc 168 engages valve seat 160 Aperture 164 is crossed, and the engagement of discharge tray 204 discharge seat 208 passes through discharge port 200 to prevent fluid flow is dynamic.

In fig. 2, the action bars 220 of actuator 108 is in first position, so that rotatable cam 222 does not engage The bottom 140 of valve rod 106.However, when actuator 108 is operable to valve rod 106 on the axis direction along longitudinal axis A from figure When position shown in 2 is moved to the position shown in Fig. 3, bar 220 is moved to the second place, and this causes cam 222 to be revolved around axis D Turn, until cam 222 engages the bottom 140 of valve rod 106.In this example, the second place of bar 220 corresponds to relative to first Position positions the midpoint of 35 degree of the travel path of bar 220.The movement of valve rod 106 to the position shown in Fig. 3 is compressed in the first spring Second spring 146 between seat 152 and valve body 110 so that discharge tray 204 moves away from discharge valve seat 208, so as to by inner valve 100 are moved to injection discharge construction from shutoff operation construction.

In Fig. 3 injection discharge construction, valve rod 106 is in the second place, and poppet 102 remains turned-off, but arranges Go out that valve 104 is in an open position, so as to allow the fluid from upstream fluid source to enter discharge entrance 120, and balance across valve 100 pressure differential.A part for the valve rod 106 being arranged in discharge port 200 includes the diameter or recess 224 reduced, To allow fluid to be flowed between the cylindrical part 198 and valve rod 106 of exits valve body 118.It is recessed in injection discharge construction Part 224 forms clearance G 1 between valve rod 106 and discharge port 200.It is constructed so as to, dump valve 104 can allow more Flow of fluid arrives exhaust flow path 124 by discharge port 200, and this can cause the faster pressure balance across valve 100.Shape Exhaust flow path 124 is fluidly connected to the entrance of poppet 102 into the flow orifice 210 in second spring seat 194 112, it is allowed to which fluid flows in series through valve 100, until upstream pressure and downstream pressure are almost equal.Poppet 102 is kept In closed position, until the pressure in upstream fluid source is less than the elastic force of the first spring 148 so that the first spring 148 expand and In the axial direction exits valve body 118 is promoted upwardly toward open position.By the recess 224 of bar 106 relative to outlet side The clearance G 1 that the placement location of mouth 200 provides can accelerate inner valve 100 together with the flow orifice 210 of second spring seat 194 Equilibrium.

When fluid is flowed from upstream fluid source by dump valve 104 and enters the entrance 112 of poppet 102, the second bullet The spring 148 of spring 146 and first is compressed.First spring base 152 is operatively coupled to valve rod 106 so that when valve rod 106 is to moving up When dynamic, the first spring base 152 applies reaction force against second spring 146 so that second spring 146 is compressed against valve body 110 Interior shoulder 156.Second spring seat 194 is operatively couple to valve rod 106 via ring 230 (for example, clip), and with valve Bar 106 is moved up and further moved in the hole 184 of dump valve 104 in the axial direction.First spring 148 is in dump valve Compressed between the holding shoulder 196 and second spring seat 194 of body 118.As depicted in figure 3, applied by the first spring 148 The power of the pressure in the upstream fluid source for being also not enough to overcome to the power kept on shoulder 196 and spring base 194 on poppet 102, Therefore poppet 102 is maintained in its closed position.In another example, second spring seat 194 can be by extend through valve rod 106 Pin or be couple to valve rod 106 by forming recess in the surface of valve rod 106 or groove.

When actuator 108 is operable to that valve rod 106 is moved into the 3rd position from the second place (Fig. 3) in the axial direction When (Fig. 4), bar 220 is moved to the 3rd position by completing its travel path, so as to rotate cam 222 further around axis D And further drive up valve rod 106.Second spring 146 and are further compressed in the movement of valve rod 106 to the position shown in Fig. 4 One spring 148, when the pressure in upstream fluid source is approximately equal to the pressure in downstream fluid source, this forces poppet 102 to be opened, from And inner valve 100 is moved to opening operation construction from injection discharge construction.

Fig. 4 exemplified with the inner valve 100 constructed in opening operation, wherein, poppet 102 is in an open position, it is allowed to Fluid enters the entrance 112 of valve 100 from upstream pressure source flow, into aperture 164, by main flow path 116, and via Leave valve 100 in outlet 114.When the first spring 148 expands in the axial direction and makes exits valve body 118 up and away from entrance During 112 movement, the discharge seat 208 of exits valve body 110 connects with discharge tray 204.In response to the pressure differential across valve 100, the first bullet The expansion of spring 148 causes second spring seat 194 to be slid downwardly into hole 184.

However, when upstream pressure overcomes the elastic force of second spring 148, poppet 102 moves back to closed position.Substitute Ground, specific or predetermined flow rate can be exceeded by the flow rate of valve 100 so that exits valve body 118 is towards valve seat 160 move to close poppet 102.Under any circumstance, the closing of poppet 102 grasps valve 100 from the opening illustrated in Fig. 4 Make the restricted discharge that construction is moved to illustrated in Fig. 5 to construct.In restricted discharge construction, dump valve 104 is in and beaten Begin to rehearse out position.Therefore the recess 224 of valve rod 106 is placed on the top of discharge port 200.In the position, recess Divide 224 not to be sufficiently positioned in discharge port 200 to form clearance G 1, but limited between valve rod 106 and valve port 200 Fixed gap G2.Clearance G 2 is less than between being formed during injection discharge constructs by the recess 224 and valve port 200 of valve rod 106 Gap G1.Being formed for clearance G 2 allows relative to the fluid that the discharge of discharge port 200 is allowed through in injection discharge construction The fluid of restricted amount is discharged by discharge port 200 for amount.

According to the teaching of present disclosure, dump valve 104 and poppet 102 provide holding system safety and allow to discharge The relief function that valve 104 and poppet 102 open and close, as illustrated in Fig. 2-5.When the flow rate in valve 100 becomes too Gao Shi, relief function enter entrance 112 to protect system by volitional check flow of fluid.Specifically, poppet 102 be based on into Pressure differential between mouthful pressure and outlet pressure operates, and the first spring 148 has an overflow coefficient of elasticity, and it causes ought When exceeding specific or predetermined flow rate by the flow rate of valve 100, exits valve body 118 and valve disc 168 are towards base Move on surface 160.When inlet pressure is substantially greater than outlet pressure, the exits valve body 118 with valve disc 168 is retouched in Fig. 2 Keep biasing towards susceptor surface 160 in the closed configuration painted.Dump valve 104 is arranged to balanced or balance entrance 112 with going out Pressure between mouth 114, and dump valve 104 can discharge the injection that valve 100 is placed in shown in Fig. 4 in construction, to allow one Quantitative fluid is discharged in inner valve 100.When inlet pressure is approximately equal to outlet pressure, the first spring 148 opens lifting Valve 102 is to allow flow of fluid to pass through inner valve 100 as shown in Figure 4.Once poppet 102 is opened, more than the first spring 148 The flow of fluid of coefficient of elasticity poppet 102 can be forced to be closed against the first spring 148 shown in Fig. 5.Restricted In discharge construction, dump valve 104 is opened to allow less amount of fluid to be drained into valve 100.

Fig. 6 A are gone to, exemplified with the alternative arrangement of the inner valve 100 of present disclosure.In this arrangement, valve rod 106 includes First component 340 and second component 342.Poppet body 102 is operatively coupled to the first component 340 of valve rod 106, and discharges Valve 104 is operatively coupled to the second component 342 of valve rod 106.In this arrangement, first or overflow spring 148 be arranged on discharge The top of valve seat 208 of valve 104.In addition, the valve seat 208 and valve disc 204 of dump valve 104 are arranged on the He of valve seat 160 of poppet 102 The lower section of valve disc 168.At least a portion of filter 324 around poppet 102 and dump valve 104.The extension of filter 324 328 are arranged for being fixed to the installation region 326 of valve body 110 by fastener 330.Fastener can be screw, nail Or common any other fastener in this area.Fig. 6 B provide filter 324 view of itself, this view show that extension Part 328 and fastener 330.

Fig. 7 exemplified with the inner valve 100 of present disclosure alternative arrangement, wherein, the first spring 148 is overflow spring, And including the Part I 344 being supported via Part I of the spring base 194 against valve rod 106.The first of valve rod 106 Partly (Part I 344 of the first spring 148 is against which by spring base 194) is hidden in the figure 7, but this area Technical staff will readily appreciate that：Spring base 194 cause Part I 344 by it is conventional or it is any it is appropriate in a manner of against valve rod 106 Part I be supported.First spring 140 also includes the Part II 346 being supported against poppet body 312.It is internal Valve includes second be arranged in valve body 110 or closes spring 146.Second spring 146 is couple to valve rod 106 and is arranged to Valve rod 106 is biased towards first position.At least a portion of first spring 140 is nested in inside second spring 146.

Fig. 8 exemplified with inner valve 100 alternative arrangement, wherein, the shoulder 318 of body is the upper of the flange 130 of valve body 110 Portion surface.

Claims

1. a kind of be used to be connected to the inner valve of fluid container, it is characterised in that the fluid container have opening, inwall and with The feed entrance of the distance of spaced apart from inner walls first, the opening are surrounded by mounting flange, and the inner valve includes：

There is size to be suitable for the upper part through the opening in the fluid container, the valve for valve body, the valve body Body includes an inlet and an outlet；

The valve body includes flange, and the flange is arranged to that to allow the valve body to be mounted directly to via flange fastener described The mounting flange of container；

Valve rod, the valve rod are slidably disposed in the valve body；

Poppet, the poppet include poppet body, and the poppet body is operatively coupled to the valve by the first spring Bar and including lifting valve inlet and lifting valve outlet, the poppet is arranged to the entrance for opening and closing the valve body；

Dump valve, the dump valve are operatively coupled to the valve rod and are arranged to the opening and closing poppet enter Mouthful；

Actuator, the actuator are operatively coupled to the valve rod, and suitable for by the valve rod from the poppet and institute State the first position that dump valve is all closed and be moved to the second place and dump valve is closed and poppet is beaten that the dump valve opens The 3rd position opened；

Wherein, when the valve rod is in three position, in response to pressure change, the poppet is arranged to closing simultaneously And the dump valve is arranged to opening；And

The valve body includes shoulder, and the shoulder is arranged to be sealingly engaged with the mounting flange, and the shoulder is arranged on valve It is spaced apart between the entrance of body and flange and with the entrance, the shoulder is disposed on the valve body, with the inside Valve when being connected to the fluid container entrance be placed on away from the fluid container the inwall second distance at, The second distance is less than first distance.

2. inner valve according to claim 1, it is characterised in that the shoulder has the flange less than the valve body Diameter diameter, and wherein, the flange of the valve body, which is arranged to, receives multiple flange fasteners, and the flange is tight Firmware may be coupled directly to the mounting flange of the fluid container.

3. inner valve according to claim 2, it is characterised in that the valve body be arranged for the valve body The outlet adjacent is connected to outlet, and wherein, the outlet can be fixed to via the multiple flange fastener The valve body.

4. inner valve according to claim 3, it is characterised in that the flange of the valve body includes multiple apertures, with The multiple flange fastener is received, and wherein, the multiple aperture is arranged to the installation with the fluid container Mounting hole alignment in flange.

5. inner valve according to claim 1, it is characterised in that the valve body includes upper part, the upper part Be suitable for a diameter and size into the opening of the fluid container, the institute of the upper part of the valve body Diameter of the diameter less than the opening of the fluid container is stated, so as in the upper part of the valve body and the fluid Clearance space is formed between the opening of container.

6. inner valve according to claim 5, it is characterised in that the upper part of the valve body includes installation region, and And including filter, at least one be dimensioned to be suitable to around the poppet and the dump valve of the filter Point, the filter includes extension, and the extension is dimensioned to be suitable in the clearance space simultaneously And the extension is arranged to and is fixed to the installation region by flange fastener.

7. inner valve according to claim 1, it is characterised in that

Wherein, first spring is overflow spring, and the overflow spring includes first against the valve rod via spring base The Part I that part is supported, the overflow spring include the Part II being supported against the poppet body,

Wherein, the inner valve also includes the second spring being arranged in the valve body, and the second spring is couple to the valve Bar and it is arranged to towards the first position and biases the valve rod, and

Wherein, at least a portion of the overflow spring is nested in the inside of the second spring.

8. inner valve according to claim 7, it is characterised in that

Wherein, the poppet includes valve seat and valve disc, and wherein, the dump valve includes valve seat and valve disc, and

Wherein, when the valve rod is in the first position, the valve seat and valve disc of the dump valve are arranged on the lifting The valve seat of valve and the top of valve disc.

9. inner valve according to claim 7, it is characterised in that

Wherein, the overflow spring is arranged on above the valve seat of the dump valve, and when the valve rod is in described During first position, the valve seat and valve disc of the dump valve are arranged on the valve seat of the poppet and the lower section of valve disc.

10. inner valve according to claim 1, it is characterised in that the shoulder of the body is the institute of the valve body State the upper face of flange.

A kind of 11. internal valve system, it is characterised in that including：

Fluid container, the fluid container have opening, inwall and the feed entrance with the distance of spaced apart from inner walls first, institute Opening is stated to be surrounded by mounting flange；

Inner valve, including：

Valve body, the valve body have upper part, and the upper part is dimensioned to be adapted to extend through the fluid The opening in container, the valve body include an inlet and an outlet；

The valve body includes flange, and the flange is arranged to that to allow the valve body to be mounted directly to via flange fastener described The mounting flange of fluid container；

Valve rod, the valve rod are slidably disposed in the valve body；

Poppet, the poppet include poppet body, and the poppet body is operatively coupled to the valve by the first spring Bar and including lifting valve inlet and lifting valve outlet, the poppet be arranged to open and close the valve body it is described enter Mouthful；

Actuator, the actuator are operatively coupled to the valve rod, and suitable for by the valve rod from the poppet and institute State the first position that dump valve is all closed and be moved to the second place that the dump valve is opened, and the dump valve is closed and described The 3rd position that poppet is opened；And

Wherein, when the valve rod is in three position, in response to pressure change, the poppet is arranged to closing, And the dump valve is configured to open；And

The valve body includes being arranged for the shoulder being sealingly engaged with the mounting flange, and the shoulder is arranged on the valve body The entrance and the flange between and be spaced apart with the entrance, the shoulder is disposed on the valve body, with institute State entrance when inner valve is connected to the fluid container is placed on the inwall away from the fluid container second At distance, the second distance is less than first distance；And

Outlet, the outlet are arranged for being connected to the valve body in the outlet adjacent with the valve body.

12. internal valve system according to claim 11, it is characterised in that the shoulder has the institute less than the valve body The diameter of the diameter of flange is stated, and wherein, the flange of the valve body, which is arranged to, receives multiple flange fasteners, described Multiple flange fasteners may be coupled directly to the mounting flange of the fluid container.

13. internal valve system according to claim 12, it is characterised in that the outlet can be via the multiple flange Fastener is fixed to the valve body.

14. internal valve system according to claim 13, it is characterised in that the flange of the valve body includes multiple holes Mouthful, to receive the multiple flange fastener, and wherein, the multiple aperture be arranged to described in the fluid container Mounting hole alignment in mounting flange.

15. internal valve system according to claim 1, it is characterised in that the valve body includes upper part, the top Part has a diameter and is dimensioned to be adapted to extend into the opening of the fluid container, the institute of the valve body Diameter of the diameter less than the opening of the fluid container of upper part is stated, so as on the top of the valve body Clearance space is formed between part and the opening of the fluid container.

16. internal valve system according to claim 15, it is characterised in that the upper part of the valve body includes peace Region is filled, and is dimensioned to including filter, the filter suitable for surrounding the poppet and the dump valve At least a portion, the filter includes extension, and the extension is sized between described In the gap space and extension is arranged to is fixed to the installation region by fastener.

17. internal valve system according to claim 11, it is characterised in that

Wherein, at least a portion of the overflow spring is nested in inside the second spring.

18. internal valve system according to claim 17, it is characterised in that

19. internal valve system according to claim 17, it is characterised in that

Wherein, the overflow spring is arranged on the top of the valve seat of the dump valve, and when the valve rod is in described the During one position, the valve seat and valve disc of the dump valve are arranged on the valve seat of the poppet and the lower section of valve disc.