CN109780245A - Dual-valve body fluid erosion prevention core pipe valve - Google Patents

Abstract

Dual-valve body fluid erosion prevention core pipe valve of the invention be wrapped in outer valve inner cavity valve core tube be the coaxial sleeve II through the sleeve I of valve body, body cavity and valve body of fixing piece；There is axial interlayer in the middle part of valve core tube, the axially adjacent both sides of interlayer are the radial recirculation hole of input section and deferent segment respectively；One end of the annular inner wall package fluid erosion prevention set of at least one sleeve of sleeve I and sleeve II, fluid erosion prevention set protrude into body cavity, and the radial duct of fluid erosion prevention set is corresponding at least one section of recirculation hole of input section and deferent segment and through-lumen；Sealing pair is constituted around the annular spool of interlayer and the ring-shaped valve seats of II throat of sleeve；Input section outer diameter is greater than deferent segment outer diameter；There is driving element at least one end face direction of valve body；Under the effect of both direction potential energy, valve body makees axial reciprocating movement in outer body cavity.Adaptation granule medium, poisonous and harmful, inflammable and explosive, ultralow temperature, nuclear energy medium, fluid erosion prevention, securely and reliably, zero leakage.

Description

Dual-valve body fluid erosion prevention core pipe valve

Technical field

Dual-valve body fluid erosion prevention core pipe valve of the invention belongs to valve field, is my original invention core pipe valve (patent Shen Please number 201810267863.3) in series dual-valve body core pipe valve (201810269121.4) plate a series of branches, be related to Pressure opens and closes valve, safety valve, check-valves, opening and closing valve, pin hole pressure reducing valve, regulating valve, pressurization pressure retaining valve, quick action emergency valve and two-way Booster quick action emergency valve etc..

Using fluid erosion prevention set, performance advantage ensures high reliability, high security, zero leakage, deduction and exemption maintenance, longevity Life；The valve body structure of the diadactic structure core pipe valve (201810271335.5) of application more previous than me is simpler, and flow resistance is smaller, more Convenient for manufacturing, more save the cost, more rationally.

Suitable for various media, including granule medium, corrosive media, poisonous and harmful, inflammable and explosive, ultralow temperature, nuclear energy Equal media.

Background technique

Currently, the sealing pair of various valves, is easy the erosion by high-pressure medium and granule medium, abrasion, influences to seal Property, safety, working efficiency and service life.

Summary of the invention

The object of the present invention is to provide dual-valve body fluid erosion prevention core pipe valves, avoid medium to sealing pair erosion and abrasion, full Production, energy conservation and the security needs of foot harshness operating condition.

Dual-valve body fluid erosion prevention core pipe valve is mainly technically characterized by: the valve core tube for being wrapped in outer valve inner cavity is to fix The coaxial sleeve II through the sleeve I of valve body, body cavity and valve body of part；There are axial interlayer, interlayer in the middle part of valve core tube It is made of the intermediate pipeline section of the valve core tube of kernel and kernel radial radiation；The axially adjacent both sides of interlayer are input section respectively and defeated At least one radial recirculation hole of section out；Sealing pair is constituted around the annular spool of interlayer and the ring-shaped valve seats of II throat of sleeve； It is that shaft hole mode cooperates in conjunction with its that the outer diameter of input section, which is greater than the outer diameter of deferent segment, input section and sleeve I and deferent segment with sleeve II, Portion is respectively provided with sealing；The end of one of sleeve of sleeve I and sleeve II is at least connected with a valve rod and passes through outside corresponding Sealing is arranged in the engaging portion of the valve rod base of valve end, valve rod and valve rod base；The end of at least one sleeve of sleeve I and sleeve II There is driving element in face direction；Under the action of both direction potential energy, the valve body of outer valve inner cavity is made axial past relative to valve core tube It is multiple mobile；One end of the annular inner wall package fluid erosion prevention set of at least one sleeve of sleeve I and sleeve II, fluid erosion prevention set protrude into valve Intracoelomic cavity, when valve opening, the radial duct of fluid erosion prevention set is corresponding at least one section of recirculation hole of input section and deferent segment And through-lumen, when valve is closed, at least one section of recirculation hole of annular inner wall the closing input section and deferent segment of fluid erosion prevention set.

The radial backstop of at least one section of ring wall of the input section and deferent segment setting, wherein input section ring wall A backstop being arranged, after valve is closed, backstop is corresponding with body cavity, and the pressure of body cavity passes through non-return Device is discharged to input section inner cavity；Backstop can be any structure, such as: the backstop of unidirectional sheet, single-direction balls only Return device, the backstop of sleeve side opening, backstop of inflater type etc.；It is corresponding with body cavity after valve is closed The setting of backstop is designed primarily directed to the ultralow temperature high pressure valve such as LNG, in the case of preventing shutdown, is enclosed in The liquid medium vaporized expanding design of body cavity；Under normal circumstances, the non-high-pressure medium of non-cryogenic may not necessarily input Backstop is set on Duan Huanbi.

The ring wall of the outer valve has a communicating pipe to pass through and connects the rear pressure of outer valve inner cavity and valve, in the middle part of communicating pipe Setting check-valves can prevent completely the infiltration of reverse media using the check-valves with rupture disk when necessary, in outer body cavity It can be with dump when there is pressure suddenly；When needing to clean outer valve inner cavity, check-valves can be laid down, connects cleaning connection Pipe.

The sealing that the engaging portion of the input section and sleeve I and deferent segment and sleeve II is arranged is at least one of: one, Sealing ring；Two, bellows seal；Three, it is close around the annular spool of input section and the flexibility of I end of sleeve when valve is closed It seals component and constitutes secondary sealing pair；Four, it when valve opening, is also constituted around the annular spool of deferent segment and the lip of II end of sleeve Secondary sealing pair；The end of one of sleeve of sleeve I and sleeve II is at least connected with a valve rod across corresponding outer valve Sealing is arranged in the engaging portion of the valve rod base of end, valve rod and valve rod base.

One and the guide sleeve of the same axis of valve rod is arranged in the outer valve end, and the effect of guide sleeve is one of them: One, valve rod passes through guide sleeve and connect with the end of sleeve I and one of sleeve of sleeve II；Two, its of sleeve I and sleeve II In the end of sleeve connect a guide rod, in the other end insertion guide sleeve of guide rod.

It is described between I end face of sleeve and corresponding outer valve inner face and sleeve II and corresponding outer valve inner end The ripple blind pipe of more than two well-balanced arrangements is respectively provided between face, the ripple blind pipe inner cavity rotation on axial both sides is full of and bleeds off drive The mobile opening and closing for realizing valve of axial reciprocating of the driving valve body such as dynamic medium such as high pressure dry air, tap water, hydraulic oil.

It is described between I end face of sleeve and corresponding outer valve inner face and sleeve II and corresponding outer valve inner end The ripple blind pipe of more than two well-balanced arrangements is respectively provided between face, the ripple blind pipe inner cavity on one side is full of driving medium, one side Ripple blind pipe lumen shaft is to built-in compressed spring.

Bellows pressure chamber is arranged in the engaging portion of the input section and sleeve I, and bellows pressure chamber inner cavity is passed through by channel The preceding pressure of port valve；The engaging portion of deferent segment and sleeve II is arranged annular corrugated its inner cavity of blind pipe and is full of driving medium；It is annular corrugated The annular cavity axial end face area of blind pipe is greater than bellows pressure chamber inner cavity axial direction face area.

It is another that annular corrugated blind pipe is arranged in one of engaging portion of the input section and sleeve I and deferent segment and sleeve II Bellows seal is arranged in a engaging portion, and annular corrugated blind pipe inner cavity is full of driving medium；One of them of sleeve I and sleeve II Compressed spring is set between sleeve end face and corresponding outer valve inner face.

Bellows pressure chamber is arranged in the engaging portion of the input section and sleeve I, and inner cavity penetrates through the preceding pressure of valve by channel； Bellows seal is arranged in the engaging portion of deferent segment and sleeve II；Between II end of sleeve and corresponding outer valve inner face Compressed spring is set.

The bellows pressure chamber and annular corrugated blind pipe are both sealing element and driving element；Bellows pressure chamber is There is the annular cavity of radial spacing between singel-ply bellows and valve core tube external annulus, annular corrugated blind pipe is inside and outside double-ply bellows Between have the annular cavity of radial spacing.

The mode that the annular corrugated blind pipe inner cavity and ripple blind pipe inner cavity are full of driving medium is one of them: one, even Holding vessel is connect, when the pressure medium of holding vessel inner cavity is lower than setting pressure, pipe network supplements pressure medium to holding vessel；In holding vessel When the pressure medium of chamber is higher than setting pressure, the pressure medium of annular corrugated blind pipe inner cavity and ripple blind pipe inner cavity forms thrust and drives Moving valve closes valve；Two, full of driving medium when annular corrugated blind pipe inner cavity and ripple blind pipe inner cavity are opened, when closing, is bled off Drive medium；Three, full of driving medium when annular corrugated blind pipe inner cavity and ripple blind pipe inner cavity are closed, when unlatching, bleeds off driving and is situated between Matter.

The outer valve inner cavity can use vacuum, can also be full of dry gas, can also be full of fire-retardant indifferent gas Body can also be the fluid for making mainstream medium cooling or heating.

The outer ring surface covered by the fluid erosion prevention that sleeve I and II inner ring surface of sleeve wrap up and are affixed can be less than 8 degree Slope surface cooperation, can achieve self-locking compact state in this way.

In conclusion dual-valve body fluid erosion prevention core pipe valve of the invention has the active effect that

1, highly reliable；

2, high safety；

3, zero leakage；

4, non-maintaining；

5, the long-life；

It 6, is suitable for short distance operation, long-range control and from power drive.

Detailed description of the invention

Attached drawing 1,2 is longitudinal complete section face structural representation two states figure of first embodiment of the invention.

Attached drawing 3,4 is longitudinal complete section face structural representation two states figure of second embodiment of the invention.

Attached drawing 5 is a kind of state diagram of longitudinal complete section face structural representation of third embodiment of the invention.

Attached drawing 6 is a kind of state diagram of longitudinal complete section face structural representation of four embodiment of the invention.

Attached drawing 7 is a kind of state diagram of longitudinal complete section face structural representation of fifth embodiment of the invention.

Attached drawing 8 is a kind of state diagram of longitudinal complete section face structural representation of sixth embodiment of the invention.

Attached drawing 9,10 is longitudinal complete section face structural representation two states figure of seventh embodiment of the invention.

Attached drawing 11 is a kind of state diagram of longitudinal complete section face structural representation of eighth embodiment of the invention.

Attached drawing 12 is a kind of state diagram of longitudinal complete section face structural representation of ninth embodiment of the invention.

Attached drawing 13,14 is longitudinal complete section face structural representation two states figure of tenth embodiment of the invention.

Attached drawing 15 is a kind of state diagram of longitudinal complete section face structural representation of eleventh embodiment of the invention.

Attached drawing 16 is a kind of state diagram of longitudinal complete section face structural representation of twelveth embodiment of the invention.

Attached drawing 17,18,19 is three kinds of state diagrams of longitudinal complete section face structural representation of thirteenth embodiment of the invention.

Attached drawing 20 is a kind of state diagram of longitudinal complete section face structural representation of fourteenth embodiment of the invention.

Attached drawing 21,22 is longitudinal complete section face structural representation two states figure of fifteenth embodiment of the invention.

Attached drawing 23 is a kind of state diagram of longitudinal complete section face structural representation of sixteenth embodiment of the invention.

Attached drawing 24 is a kind of state diagram of longitudinal complete section face structural representation of seventeenth embodiment of the invention.

Attached drawing 25,26,27 is three kinds of state diagrams of longitudinal complete section face structural representation of eighteenth embodiment of the invention.

Attached drawing 28,29,30 is three kinds of state diagrams of longitudinal complete section face structural representation of nineteenth embodiment of the invention.

1- valve core tube, 1 '-input section, 1 in figure "-deferent segment, 100- interlayer, 100 '-ligulate triangle slope surfaces, 101- Annular spool, 101 '-annular spools, 103- recirculation hole, 105 "-intercommunicating pore, 2- valve body, 2 '-sleeves I, 2 "-sleeves II, The inner cavity 200-, 200 "-duct, 201- ring-shaped valve seats, 201 '-fluid erosion prevention sets, 3- mobile bellows seal, 300- bellows Sealing element, 302- sealing ring, 302 '-sealing rings II, 305- ring-shaped sealing sleeve, 308- ripple blind pipe, 4- compressed spring, 503 '- Fastening screw, 504- valve rod, 504 '-valve rod bases, 504 "-guide rod, 507- push-rod electric machine, 507 '-screw rods, 600- communicating pipe, 601- communicating pipe I, 602- communicating pipe II, 605- control valve, 606- control valve II, 608- check-valves, 609- backstop, 701- Bracket, 707- ball, 8- outer valve, 8 '-inner cavities, 808- guide sleeve.

Specific embodiment

Embodiment summary:

The valve core tube 1 for being wrapped in 8 inner cavity 8 ' of outer valve be the coaxial sleeve I 2 through valve body 2 of fixing piece ', valve 2 inner cavity 200 of body and valve body 2 sleeve II 2 "；There is axial interlayer 100 in the middle part of valve core tube 1, interlayer 100 is by kernel and kernel diameter It is constituted to the intermediate pipeline section of the valve core tube 1 of radiation；The axially adjacent both sides of interlayer 100 are input section 1 ' and deferent segment 1 respectively " At least one radial recirculation hole 103；The outer diameter of input section 1 ' is greater than deferent segment 1 " outer diameter, input section 1 ' and sleeve I 2 ' and defeated Section 1 " with sleeve II 2 " is that shaft hole mode cooperates its engaging portion to be respectively provided with sealing out；Sleeve I 2 ' and sleeve II 2 " at least one sleeve One end of the annular inner wall package fluid erosion prevention set 201 ' of pipe, fluid erosion prevention set 201 ' protrude into 2 inner cavity 200 of valve body, when valve opening, prevent At least one section of the recirculation hole 103 in radial duct 200 " with input section 1 ' and deferent segment 1 " of erosion set 201 ' is corresponding and penetrates through Inner cavity 200, valve close when, fluid erosion prevention set 201 ' annular inner wall closing input section 1 ' and deferent segment 1 " at least one section of stream Through-hole 103；During valve opening, so that the annular inner wall of fluid erosion prevention set 201 ' is covered annular spool 101 always, avoid medium Erosion；In closing process, annular spool 101 also not will receive the erosion of medium；When the recirculation hole for being moved across input section 1 ' When 103 aperture length, fluid erosion prevention cover 201 ' annular inner walls closing input section 1 ' and deferent segment 1 " at least one section of recirculation hole 103, it is ensured that sealing pair service life；After valve is closed, the axial ends of sealing pair is in closed state, and pressure at two ends is close Or it is equal to zero, it is ensured that the sealing effect of sealing pair.

The sleeve I 2 ' annular inner wall package fluid erosion prevention set 201 ' one end and constitute sleeve I 2 ' a part, erosion control The other end of erosion set 201 ' protrudes into 2 inner cavity 200 of valve body, and when valve opening, the radial duct 200 of fluid erosion prevention set 201 ' is " with input Section 1 ' recirculation hole 103 is corresponding and through-lumen；Around the annular spool 101 and the " annular of throat of sleeve II 2 of interlayer 100 Valve seat 201 constitutes sealing pair.

The sleeve II 2 " annular inner wall package fluid erosion prevention set 201 ' one end and constitute sleeve II 2 " a part, prevent The other end of erosion set 201 ' protrudes into 2 inner cavity 200 of valve body, when valve opening, the radial duct 200 of fluid erosion prevention set 201 ' " with it is defeated Section 1 out " recirculation hole 103 is corresponding and through-lumen；Sealing surface around the annular spool 101 of interlayer 100 is unidirectional slope surface Covering 201 ' inner ring, that is, sleeve II 2 with insertion fluid erosion prevention, " ring-shaped valve seats 201 of throat constitutes sealing pair.

The sleeve I 2 ' and sleeve II 2 " annular inner wall respectively wrap up one end of fluid erosion prevention set 201 ' and respectively constitute sleeve I 2 ' and sleeve II 2 " a part, fluid erosion prevention covers 201 ' middle parts and is located at 2 inner cavity 200 of valve body, when valve opening, fluid erosion prevention set 201 ' the recirculation hole 103 in radial duct 200 " respectively with input section 1 ' and deferent segment 1 " is corresponding and through-lumen；Around every The sealing surface of the annular spool 101 of layer 100 is unidirectional slope surface and the insertion fluid erosion prevention set 201 ' inner ring i.e. " ring of throat of sleeve II 2 Shape valve seat 201 constitutes sealing pair.

Embodiment one

Referring to attached drawing 1,2, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for opening and closing；It is described to be wrapped in outer valve The valve core tube 1 of 8 inner cavity 8 ' of body be the coaxial sleeve I 2 through valve body 2 of fixing piece ', 2 inner cavity 200 of valve body and valve body 2 Sleeve II 2 "；Have axial interlayer 100 in the middle part of valve core tube 1, interlayer 100 by kernel and the valve core tube 1 of kernel radial radiation centre Pipeline section is constituted, and two axial end faces of 100 kernel of interlayer are circular conical surfaces；The axially adjacent both sides of interlayer 100 are input section respectively 1 ' and " four of the well-balanced arrangement radial recirculation holes 103 of deferent segment 1；Input section 1 ' and sleeve I 2 ' and deferent segment 1 " with sleeve II 2 " Engaging portion be respectively provided with bellows seal 300；Sleeve I 2 ' and sleeve II 2 " annular inner wall respectively wrap up fluid erosion prevention set 201 ' One end simultaneously respectively constitute sleeve I 2 ' and sleeve II 2 " a part, fluid erosion prevention set 201 ' middle part be located at 2 inner cavity 200 of valve body, valve When door is opened, 103 phase of recirculation hole in the radial ducts of fluid erosion prevention set eight of 201 ' 200 " respectively with input section 1 ' and deferent segment 1 " Corresponding and through-lumen 200；Sealing surface around the annular spool 101 of interlayer 100 is unidirectional slope surface and insertion fluid erosion prevention set " ring-shaped valve seats 201 of throat constitutes sealing pair to 201 ' inner ring, that is, sleeve II 2；A piece valve rod 504 passes through the valve of 8 end of outer valve " end connects pole socket 504 ' with sleeve II 2；" the setting compression bullet between end face and corresponding 8 inner face of outer valve of sleeve II 2 Spring 4 wraps up valve rod 504；504 ' inner ring surface of valve rod base setting sealing ring II 302 '；I 2 ' end of sleeve of the same axis of valve rod 504 Connect a guide rod 504 ", " other end is embedded in the guide sleeve 808 of 8 end of outer valve guide rod 504；1 ' ring wall of input section Radial backstop 609 is set, and after valve is closed, backstop 609 is corresponding with 2 inner cavity 200 of valve body；1 ' ring wall of input section Intercommunicating pore 105 is set and " penetrates through 1 ' inner cavity of input section and 300 inner cavity of bellows seal；" intercommunicating pore is arranged in ring wall to deferent segment 1 105 " perforation deferent segment 1 " 300 inner cavities of inner cavity and bellows seal；One communicating pipe II 602 passes through outer valve 8 and connects inner cavity 8 ' and valve rear pressure, communicating pipe II 602 middle part one check-valves 608 is set, inner cavity 8 ' will by check-valves 608 when there is high pressure Pressure venting, into the rear pressure of valve.

It is open state shown in attached drawing 1, at this point, to deferent segment 1, " direction is mobile, sleeve with moving valve 2 for dragging valve rod 504 II 2 " ring-shaped valve seats 201 of throat leaves annular spool 101, and the duct 200 of fluid erosion prevention set 201 ' is " with input section 1 ' and deferent segment 1 " recirculation hole 103 is opposite to be communicated；Recirculation hole 103 of the medium through input section 1 ', duct 200 ", inner cavity 200, duct 200 " and defeated Section 1 out " recirculation hole 103, into the rear pressure of valve, flow of media.

It shown in attached drawing 2, is in off state, at this point, unclamping force, the elastic force of compressed spring 4 pushes valve body 2 to input section 1 ' Direction is mobile, sleeve II 2, and " ring-shaped valve seats 201 of throat is closely affixed with annular spool 101, cuts off medium flow field；In closing process In, when being moved across 103 aperture length of recirculation hole of input section 1 ', the annular inner wall of fluid erosion prevention set 201 ' covers input section 1 ' With deferent segment 1 " recirculation hole 103.

Embodiment two

Referring to attached drawing 3,4, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment is depressurized for pin hole；The interlayer 100 Two axial end faces of kernel are planes；The axially adjacent both sides of interlayer 100 are input section 1 ' and 1 " phase up and down of deferent segment respectively The radial recirculation hole 103 of wrong one；Two basic change portion is respectively provided with bellows seal 300；Sleeve I 2 ' annular inner wall package it is anti- One end of erosion set 201 ', fluid erosion prevention set 201 ' have a radial duct 200 "；A piece valve rod 504 passes through 8 end of outer valve Valve rod base 504 ' is connected with I 2 ' end of sleeve；504 head of valve rod is connected with push-rod electric machine 507；504 ' inner ring surface of valve rod base is set Set sealing ring II 302 '；" compressed spring 4 is arranged in sleeve II 2 between end face and corresponding 8 inner face of outer valve.

It is open state shown in attached drawing 3, at this point, push-rod electric machine 507 promotes and to deferent segment 1, " direction is moved with moving valve 2 Dynamic, " ring-shaped valve seats 201 of throat leaves annular spool 101 to sleeve II 2, and the duct 200 of fluid erosion prevention set 201 ' is " with input section 1 ' Recirculation hole 103 opposite communicate；Medium decompression circulation.

Shown in attached drawing 4, be in off state, at this point, push-rod electric machine 507 is shunk, the elastic force of compressed spring 4 push valve body 2 to 1 ' direction of input section is mobile, sleeve II 2, and " ring-shaped valve seats 201 of throat is closely affixed with annular spool 101, cuts off medium flow field.

Embodiment three

Referring to attached drawing 5, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment is suitable for remote fuel gas control for opening and closing System；Two axial end faces of 100 kernel of interlayer are spherical surfaces；" there are six radial recirculation holes for input section 1 ' and deferent segment 1 103；Two basic change portion is respectively provided with bellows seal 300；Sleeve II 2 " annular inner wall package fluid erosion prevention set 201 ' one end, There are six radial ducts 200 for fluid erosion prevention set 201 ' "；A piece valve rod 504 passes through the valve rod base 504 ' and guide sleeve of 8 end of outer valve 808 connect with I 2 ' end of sleeve, valve rod base 504 ' and 808 inner ring surface of guide sleeve have sealing ring II 302 ', 504 head of valve rod It is connected with push-rod electric machine 507；" compressed spring 4 is arranged in sleeve II 2 between end face and corresponding 8 inner face of outer valve；It can also To replace push-rod electric machine 507 with electromagnet.

It is open state, the promotion valve rod 504 of push-rod electric machine 507 with moving valve 2, to deferent segment 1, " move by direction shown in attached drawing 5 Dynamic, " ring-shaped valve seats 201 of throat leaves annular spool 101, the duct 200 " with deferent segment 1 " of fluid erosion prevention set 201 ' to sleeve II 2 Recirculation hole 103 opposite communicate；Flow of media.

Example IV

Referring to attached drawing 6, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for opening and closing；100 kernel of interlayer Two axial end faces are circular conical surfaces；" there are four radial recirculation hole 103, recirculation hole 103 has fair current for input section 1 ' and deferent segment 1 Inclination angle；Two basic change portion is respectively provided with bellows seal 300；Sleeve II 2 " annular inner wall package fluid erosion prevention set 201 ' one End, there are four radial ducts 200 for fluid erosion prevention set 201 ' "；A piece valve rod 504 passes through the valve rod base 504 ' and sleeve of 8 end of outer valve " the end connection of pipe II 2；" compressed spring 4 is arranged in sleeve II 2 between end face and corresponding 8 inner face of outer valve；Input section 1 ' The backstop 609 of two radial directions is arranged in ring wall, after valve is closed, one of backstop 609 and 2 inner cavity of valve body, 200 phase It is corresponding, it can be discharged to 1 ' inner cavity of input section when 300 inner cavity of bellows seal and 2 inner cavity 200 of valve body generation pressure；Output " backstop 609 is arranged in ring wall to section 1；Pass through the rear pressure that outer valve 8 connects inner cavity 8 ' and valve one communicating pipe II 602, even A check-valves 608 is arranged in II 602 middle part of siphunculus；Ball 707 and attached is set between 8 inner ring surface of 2 outer ring surface of valve body and outer valve In 2 outer ring surface of valve body.

It is open state shown in attached drawing 6, at this point, to deferent segment 1, " direction is mobile, sleeve with moving valve 2 for dragging valve rod 504 II 2 " ring-shaped valve seats 201 of throat leaves annular spool 101, the recirculation hole in the duct 200 " with deferent segment 1 " of fluid erosion prevention set 201 ' 103 communicate relatively, flow of media.

Embodiment five

Referring to attached drawing 7, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for opening and closing；It is described to be wrapped in outer valve 8 The valve core tube 1 of inner cavity 8 ' be fixing piece perpendicular to the ground sleeve I 2 through valve body 2 coaxial from bottom to up ', 2 inner cavity of valve body 200 and valve body 2 sleeve II 2 "；Two axial end faces of 100 kernel of interlayer are circular conical surfaces；Input section 1 ' and deferent segment 1 " There are four radial recirculation holes 103；Two basic change portion is respectively provided with sealing ring 302；Sleeve I 2 ' annular inner wall wrap up fluid erosion prevention set 201 ' one end, there are four radial ducts 200 for fluid erosion prevention set 201 ' "；When valve is closed, around 1 ' end of input section, that is, outer valve The spherical surface annular spool 101 ' of 8 inner ends and flexible seal member, that is, ring-shaped sealing sleeve 305 of I 2 ' end of sleeve constitute secondary sealing It is secondary；When valve opening, the lip around deferent segment 1 " annular spool 101 ' and sleeve II 2 " end also constitutes secondary sealing pair；Two " end connects valve rod base 504 ' of the root valve rod 504 across 8 end of outer valve with sleeve II 2；Sleeve II 2 " end face with it is corresponding Bellows seal 300 is set between 8 inner face of outer valve and wraps up valve rod 504；Sealing ring II is arranged in 504 ' inner ring surface of valve rod base 302′；504 head of valve rod passes through the bracket 701 of annular, and the fastening screw 503 ' of 701 end of bracket setting can be fixed and be adjusted The axial position of bracket 701；Compressed spring 4 is set between bracket 701 and corresponding 8 outer end face of outer valve, is applied to bracket 701 Power closes valve；Pass through the rear pressure that outer valve 8 connects inner cavity 8 ' and valve, II 602 middle part setting of communicating pipe one communicating pipe II 602 One check-valves 608.

It is open state shown in attached drawing 7, at this point, the elastic force of compressed spring 4 pushes valve body 2 is axial to move up, II 2 " larynx of sleeve The ring-shaped valve seats 201 in portion leaves annular spool 101, four ducts 200 " recirculation hole with input section 1 ' of fluid erosion prevention set 201 ' 103 communicate relatively, flow of media；Meanwhile the lip around deferent segment 1 " annular spool 101 ' and sleeve II 2 " end is close It is affixed.

Embodiment six

Referring to attached drawing 8, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for opening and closing；It is described to be wrapped in outer valve 8 The valve core tube 1 of inner cavity 8 ' be fixing piece perpendicular to ground from top to bottom the coaxial sleeve I 2 through valve body 2 ', 2 inner cavity of valve body 200 and valve body 2 sleeve II 2 "；Two axial end faces of 100 kernel of interlayer are circular conical surfaces；Input section 1 ' and deferent segment 1 " There are four radial recirculation holes 103；Two basic change portion is respectively provided with sealing ring 302；Sleeve II 2 " annular inner wall wrap up fluid erosion prevention One end of set 201 ', there are four radial ducts 200 for fluid erosion prevention set 201 ' "；When valve is closed, around the annular spool of input section 1 ' 101 ' constitute secondary sealing pair with the i.e. mobile bellows seal 3 of the flexible seal member of I 2 ' end of sleeve；When valve opening, ring Lip around deferent segment 1 " annular spool 101 ' and sleeve II 2 " end also constitutes secondary sealing pair；Two valve rods 504 pass through outer The valve rod base 504 ' of 8 end of valve body is connected with I 2 ' end of sleeve；504 head of valve rod passes through the bracket 701 of annular, 701 end of bracket The fastening screw 503 ' of portion's setting can fix the axial position with adjusting bracket 701；I 2 ' end face of sleeve and corresponding outer valve Bellows seal 300 is set between 8 inner face of body and wraps up valve rod 504, bracket 701 and corresponding 8 outer end face of outer valve it Between setting bellows seal 300 wrap up valve rod 504；Its head is set between bracket 701 and corresponding 8 outer end face of outer valve Push-rod electric machine 507 with compressed spring 4 drives compressed spring 4 and bracket 701 to move down simultaneously when push-rod electric machine 507 is shunk； After push-rod electric machine 507 is boosted in place, compressed spring 4 supplements upward holding power；1 ' ring wall of input section is equipped with radial stop Return device 609, when valve is closed, the power for being enclosed in the very low temperature flow vaporization generation of 2 inner cavity 200 of valve body opens backstop 609, pressure is discharged into 1 ' inner cavity of input section；Pass through the rear pressure that outer valve 8 connects inner cavity 8 ' and valve one communicating pipe II 602, even A check-valves 608 is arranged in II 602 middle part of siphunculus.

Shown in attached drawing 8, be open state, at this point, push-rod electric machine 507 shrink and drive compressed spring 4 and bracket 701 and Valve body 2 is axial to be moved down, sleeve II 2 " ring-shaped valve seats 201 of throat leaves annular spool 101, the duct 200 of fluid erosion prevention set 201 ' " With deferent segment 1 " recirculation hole 103 it is opposite communicate, flow of media；Meanwhile around deferent segment 1 " annular spool 101 ' and sleeve II 2 " lip of end is closely affixed.

Embodiment seven

Referring to attached drawing 9,10, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for opening and closing；In the interlayer 100 Two axial end faces of core are circular conical surfaces；" there are four radial recirculation holes 103 for input section 1 ' and deferent segment 1；When valve is closed, Secondary sealing pair is constituted around the annular spool 101 ' of input section 1 ' and the mobile bellows seal 3 of I 2 ' end of sleeve；Valve is opened Qi Shi, the lip around deferent segment 1 " annular spool 101 ' and sleeve II 2 " end also constitute secondary sealing pair；Sleeve I 2 ' ring Shape inner wall wraps up one end of fluid erosion prevention set 201 ', and there are four radial ducts 200 for fluid erosion prevention set 201 ' "；In I 2 ' end face of sleeve and phase Between corresponding 8 inner face of outer valve and sleeve II 2 " is respectively provided with two well-balanced rows between corresponding 8 inner face of outer valve The ripple blind pipe 308 of cloth, 308 inner cavity of ripple blind pipe with side is penetrated through by communicating pipe 600, in the ripple blind pipe 308 on axial both sides Chamber rotation is full of and bleeds off driving medium；A backstop 609 is arranged in the ring wall of input section 1 ', when valve is closed with Inner cavity 200 is corresponding, conducive to inner cavity 200 liquid vaporized expanding when to 1 ' inner cavity of input section discharge pressure；One communicating pipe II 602 pass through the rear pressure that outer valve 8 connects inner cavity 8 ' and valve, and communicating pipe, a check-valves 608 was arranged in II 602 middle part.

It is open state shown in attached drawing 9, at this point, 308 inner cavity of ripple blind pipe in 1 ' direction of input section is full of driving medium, Making valve body 2 to deferent segment 1, " direction is mobile, and " ring-shaped valve seats 201 of throat leaves annular spool 101, fluid erosion prevention set to sleeve II 2 201 ' " opposite with the recirculation hole 103 of input section 1 ' to communicate, the flow of media of duct 200.

Shown in attached drawing 10, it is in off state, at this point, deferent segment 1 " 308 inner cavity of ripple blind pipe in direction is full of driving medium, Push valve body 2 mobile to 1 ' direction of input section, " ring-shaped valve seats 201 of throat is closely affixed sleeve II 2 with annular spool 101, is cut Disconnected medium flow field.

Embodiment eight

Referring to attached drawing 11, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, two axial directions of 100 kernel of interlayer End face is circular conical surface；" there are four radial recirculation holes 103 for input section 1 ' and deferent segment 1；When valve is closed, around input section 1 ' Annular spool 101 ' and I 2 ' end of sleeve mobile bellows seal 3 constitute secondary sealing pair；When valve opening, around defeated The lip of section 1 " annular spool 101 ' and sleeve II 2 " end also constitutes secondary sealing pair out；Sleeve I 2 ' annular inner wall package One end of fluid erosion prevention set 201 ', there are four radial ducts 200 for fluid erosion prevention set 201 ' "；In I 2 ' end face of sleeve and corresponding outer valve Between 8 inner face of body and sleeve II 2 is " blind with the ripple for being respectively provided with two well-balanced arrangements between corresponding 8 inner face of outer valve Pipe 308；" 308 lumen shaft of ripple blind pipe in end face direction is to built-in compressed spring 4 for sleeve II 2；The ring wall setting two of input section 1 ' A backstop 609；After a piece communicating pipe II 602 of the middle part with check-valves 608 passes through the connection inner cavity 8 ' of outer valve 8 and valve Pressure；308 inner cavity of ripple blind pipe in I 2 ' end face of sleeve direction: one, by pipeline perforation valve preceding pressure, be related to pressure opening and closing, safety, Non-return, two, simultaneously, by the rear pressure of another root canal road perforation valve, it is related to two-way booster emergency cut-off, three, be full of or bleed off it Its driving medium, is related to opening and closing.

It is open state, at this point, the driving that 308 inner cavity of ripple blind pipe in I 2 ' end face of sleeve direction is full of shown in attached drawing 11 The thrust that medium is formed is greater than the elastic force of compressed spring 4, makes valve body 2 to deferent segment 1, and " direction is mobile, " the ring of throat of sleeve II 2 Shape valve seat 201 leaves annular spool 101, the duct 200 of fluid erosion prevention set 201 ' " it is opposite with the recirculation hole 103 of input section 1 ' to communicate, Flow of media.

Embodiment nine

Referring to attached drawing 12, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, two axial directions of 100 kernel of interlayer End face is circular conical surface；" there are four radial recirculation holes 103 for input section 1 ' and deferent segment 1；When valve is closed, around input section 1 ' Annular spool 101 ' and I 2 ' end of sleeve mobile bellows seal 3 constitute secondary sealing pair；When valve opening, around defeated The lip of section 1 " annular spool 101 ' and sleeve II 2 " end also constitutes secondary sealing pair out；Sleeve I 2 ' annular inner wall package One end of fluid erosion prevention set 201 ', there are four radial ducts 200 for fluid erosion prevention set 201 ' "；I 2 ' end face of sleeve and corresponding outer valve Between 8 inner faces and sleeve II 2 is " with the ripple blind pipe for being respectively provided with two well-balanced arrangements between corresponding 8 inner face of outer valve 308；308 lumen shaft of ripple blind pipe in I 2 ' end face of sleeve direction is to built-in compressed spring 4；The ring wall of input section 1 ' is arranged two Backstop 609；Pass through the rear pressure that outer valve 8 connects inner cavity 8 ' and valve one communicating pipe II 602, communicating pipe, II 602 middle part was set Set a check-valves 608；Sleeve II 2 " 308 inner cavity of ripple blind pipe in end face direction: one, by the preceding pressure of pipeline perforation valve, is related to Emergency cut-off, two, connection holding vessel are related to being pressurized pressure maintaining, and three, be full of or bleed off other driving media, it is related to opening and closing.

Shown in attached drawing 12, " driving medium that ripple blind pipe 308 inner cavity in end face direction be full of is in off state, sleeve II 2 The thrust of formation is greater than the elastic force of compressed spring 4, pushes valve body 2 mobile to 1 ' direction of input section, " the annular of throat of sleeve II 2 Valve seat 201 is closely affixed with annular spool 101, cuts off medium flow field.

Embodiment ten

Referring to attached drawing 13,14, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for adjusting；In the interlayer 100 Two axial end faces of core are ligulate triangle slope surfaces 100 '；" there are two radial recirculation holes 103 for input section 1 ' and deferent segment 1；Sleeve Pipe I 2 ' and sleeve II 2 " annular inner wall respectively wrap up one end of fluid erosion prevention set 201 ', fluid erosion prevention set 201 ' has facing each other four A radial direction duct 200 "；Input section 1 ' and sleeve I 2 ' engaging portion bellows pressure chamber 306 is set, 1 ' ring wall of input section has diameter To intercommunicating pore 105 "；Its inner cavity of annular corrugated blind pipe 308 ' is arranged full of dry height in the engaging portion of deferent segment 1 " with sleeve II 2 " Air is pressed, air spring is formed；Deferent segment 1 " ring wall also has radial intercommunicating pore 105 "；Annular corrugated 308 ' inner cavity of blind pipe is axial Face area is greater than 306 inner cavity axial direction face area of bellows pressure chamber；It is set between 2 outer ring surface of 8 inner ring surface of outer valve and valve body It sets ball 707 and is attached to 2 outer ring surface of valve body.

It is open state, at this point, pipe network pressure medium is normal, into 306 inner cavity of bellows pressure chamber shown in attached drawing 13 The thrust that pressure medium is formed is greater than the thrust that annular corrugated 308 ' inner cavity pressure-air of blind pipe is formed, and pushes valve body 2 to output Section 1 " direction is mobile, sleeve II 2 " ring-shaped valve seats 201 of throat leaves annular spool 101, the duct 200 of fluid erosion prevention set 201 ' " With input section 1 ' and deferent segment 1 " recirculation hole 103 it is opposite communicate, flow of media.

Shown in attached drawing 14, to adjust decompression state, at this point, pipe network pressure medium is higher than normal pressure, into bellows pressure The thrust that the pressure medium of 306 inner cavity of power cabin is formed is higher than the thrust that annular corrugated 308 ' inner cavity pressure-air of blind pipe is formed, after Continuous to push valve body 2 to deferent segment 1 " direction is mobile, and the annular inner wall of fluid erosion prevention set 201 ' has covered input section 1 ' and deferent segment 1 " The a part of recirculation hole 103, medium decompression circulation.

Embodiment 11

Referring to attached drawing 15, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for opening and closing；100 kernel of interlayer Two axial end faces be circular conical surface；" there are four radial recirculation hole 103, recirculation hole 103 has suitable for input section 1 ' and deferent segment 1 The inclination angle of stream；Sleeve II 2 " annular inner wall package fluid erosion prevention set 201 ' one end, there are four radial ducts for fluid erosion prevention set 201 ' 200″；Input section 1 ' and sleeve I 2 ' engaging portion setting bellows pressure chamber 306 and sealing ring 302,1 ' ring wall of input section have diameter To intercommunicating pore 105 "；Annular corrugated blind pipe 308 ' is arranged in the engaging portion of deferent segment 1 " with sleeve II 2 ", when closing valve, circumferential wave 308 ' inner cavity of line blind pipe injection driving medium, when unlatching, bleeds off driving medium；" ring wall has radial intercommunicating pore to deferent segment 1 105″；Annular corrugated 308 ' inner cavity axial direction face area of blind pipe is greater than 306 inner cavity axial direction face area of bellows pressure chamber；One Connect the rear pressure of 8 inner cavity 8 ' and valve of outer valve communicating pipe II 602, communicating pipe, II 602 middle part was check-valves 608.

It is open state, at this point, the driving medium of annular corrugated 308 ' inner cavity of blind pipe is bled off, ripple shown in attached drawing 15 The thrust that the pressure medium of 306 inner cavity of pipe pressure cabin is formed makes valve body 2 to deferent segment 1, and " direction is mobile, " the ring of throat of sleeve II 2 Shape valve seat 201 leaves annular spool 101, and the recirculation hole 103 in the duct 200 " with deferent segment 1 " of fluid erosion prevention set 201 ' is opposite to be communicated, Flow of media.

Embodiment 12

Referring to attached drawing 16, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for being pressurized pressure maintaining；The interlayer 100 Two axial end faces of kernel are circular conical surfaces；" there are four radial recirculation holes 103 for input section 1 ' and deferent segment 1；Sleeve I 2 ' Annular inner wall wraps up one end of fluid erosion prevention set 201 ', and there are four radial ducts 200 for fluid erosion prevention set 201 ' "；Input section 1 ' and sleeve I Bellows pressure chamber 306 is arranged in 2 ' engaging portion, and 1 ' ring wall of input section has radial backstop 609 and radial communication hole 105″；The engaging portion of deferent segment 1 " with sleeve II 2 " is arranged annular corrugated its inner cavity of blind pipe 308 ' and connect with holding vessel；Deferent segment 1 " ring wall also has radial intercommunicating pore 105 "；Annular corrugated 308 ' inner cavity axial direction face area of blind pipe is greater than bellows pressure chamber 306 inner cavity axial direction face areas.

It is open state shown in attached drawing 16, at this point, the pressure medium in holding vessel is lower than demand pressure, it is annular corrugated blind The thrust that the pressure medium of 308 ' inner cavity of pipe is formed is less than the thrust that the pressure medium of 306 inner cavity of bellows pressure chamber is formed, valve Body 2 leaves annular spool 101 to deferent segment 1 " direction is mobile, the sleeve II 2 " ring-shaped valve seats 201 of throat, fluid erosion prevention set 201 ' Radial duct 200 is " opposite with the recirculation hole 103 of input section 1 ' to communicate；Recirculation hole 103 of the medium through input section 1 ', duct 200 ", Inner cavity 200 and deferent segment 1 " recirculation hole 103 inject holding vessel into the rear pressure of valve；Pressure medium in holding vessel, which is higher than, to be needed When seeking pressure, the thrust that the pressure medium of annular corrugated 308 ' inner cavity of blind pipe is formed is greater than Jie of 306 inner cavity of bellows pressure chamber The thrust of matter pressure initiation, valve are closed.

Embodiment 13

Referring to attached drawing 17,18,19, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment is promptly cut for two-way booster It is disconnected；Two axial end faces of 100 kernel of interlayer are ligulate triangle slope surfaces 100 '；Input section 1 ' and deferent segment 1 are " there are two Radial recirculation hole 103；Sleeve I 2 ' annular inner wall package fluid erosion prevention set 201 ' one end, there are two radial for fluid erosion prevention set 201 ' Duct 200 "；Input section 1 ' and sleeve I 2 ' engaging portion setting sealing ring 302 and bellows pressure chamber 306, bellows pressure chamber The perforation of the preceding pressure of communicating pipes 600 of 306 inner cavity connecting band control valves 605 and valve, and with the communicating pipe I 601 with control valve II 606 It is penetrated through with the rear pressure of valve；The engaging portion of deferent segment 1 " with sleeve II 2 " is arranged its inner cavity of annular corrugated blind pipe 308 ' and is full of drying Pressure-air forms air spring；Deferent segment 1 " ring wall also has radial intercommunicating pore 105 "；Annular corrugated 308 ' lumen shaft of blind pipe It is greater than 306 inner cavity axial direction face area of bellows pressure chamber to face area.

It is open state shown in attached drawing 17, opens control valve 605, the pressure medium of pipe network enters wave by communicating pipe 600 306 inner cavity of line pipe pressure cabin, the thrust that the pressure medium of 306 inner cavity of bellows pressure chamber is formed are greater than annular corrugated blind pipe 308 ' The thrust that inner cavity pressure-air is formed pushes valve body 2 to deferent segment 1, and " direction is mobile, " the ring-shaped valve seats 201 of throat of sleeve II 2 It leaves annular spool 101, the duct 200 of fluid erosion prevention set 201 ' and " is communicated relatively with the recirculation hole 103 of input section 1 ', flow of media； Close to balance and then control valve II 606, communicating pipe I 601 and bellows pressure are opened in the pressure of the preceding pressure of the rear pressure and valve of valve The perforation of 306 inner cavity of power cabin, valve are in the open state always.

It is emergency cut-off state shown in attached drawing 18, at this point, the rear pressure pipeline of valve bursts, the medium entered from the preceding pressure injection of valve Pressure passes through communicating pipe 600 and flows directly into the rear pressure of valve communicating pipe I 601, and 306 inner cavity of bellows pressure chamber, which can not be formed, to push away Power, the thrust that annular corrugated 308 ' inner cavity pressure-air of blind pipe is formed push valve body 2 mobile to 1 ' direction of input section, sleeve II 2 " The ring-shaped valve seats 201 of throat is closely affixed with annular spool 101, cuts off upstream medium flow field；Then, control is successively closed in long-range control Valve 605 and control valve II 606 processed.

It is emergency cut-off state shown in attached drawing 19, at this point, the preceding pressure pipeline of valve bursts, the medium entered from the rear pressure injection of valve Pressure passes through communicating pipe I 601 and flows directly into the preceding pressure of valve communicating pipe 600, and 306 inner cavity of bellows pressure chamber, which can not be formed, to push away " ring-shaped valve seats 201 of throat is closely affixed with annular spool 101, cuts off downstream media stream for power, sleeve II 2；Then, long-range control System closes control valve II 606 and control valve 605.

Embodiment 14

Referring to attached drawing 20, dual-valve body blind pipe described in the present embodiment drives fluid erosion prevention core pipe valve, for opening and closing；The interlayer Two axial end faces of 100 kernels are circular conical surfaces；" there are four radial recirculation hole 103, recirculation holes for input section 1 ' and deferent segment 1 103 have the inclination angle of fair current；Sleeve II 2 " annular inner wall package fluid erosion prevention set 201 ' one end, fluid erosion prevention set 201 ' is there are four diameter To duct 200 "；Input section 1 ' and sleeve I 2 ' engaging portion bellows seal 300 is set, deferent segment 1 " with sleeve II 2 " Annular corrugated blind pipe 308 ' is arranged in engaging portion；When closing valve, annular corrugated 308 ' inner cavity of blind pipe injection driving medium is such as dry Pressure-air；When Open valve, driving medium is bled off；The setting of 8 end of outer valve two corresponding with I 2 ' end face of sleeve right The circular hole of title, compressed spring 4 pass through circular hole, then, by 507 ' back segment of screw rod be threaded into circular hole its reduce diameter leading portion insert Enter 4 inner ring of compressed spring, compressed spring 4 directes reach I 2 ' end face of sleeve, and adjusting screw rod 507 ' can change the axial direction of compressed spring 4 Elastic dynamics；Two radial backstops 609, after valve is closed, one of 609 He of backstop are arranged in 1 ' ring wall of input section Inner cavity 200 is corresponding；" backstop 609 of a radial direction is arranged in ring wall to deferent segment 1.

It is open state shown in attached drawing 20, at this point, the dry pressure-air in annular corrugated 308 ' inner cavity of blind pipe is bled off, The elastic force of compressed spring 4 pushes valve body 2 to deferent segment 1, and " direction is mobile, and " ring-shaped valve seats 201 of throat leaves annular to sleeve II 2 Spool 101, the recirculation hole 103 in the duct 200 " with deferent segment 1 " of fluid erosion prevention set 201 ' is opposite to be communicated, flow of media；By high pressure sky Gas injects annular corrugated 308 ' inner cavity of blind pipe, and valve is closed.

Embodiment 15

Referring to attached drawing 21,22, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment is used for emergency cut-off；The interlayer Two axial end faces of 100 kernels are circular conical surfaces；" there are four radial recirculation holes 103 for input section 1 ' and deferent segment 1；Sleeve I 2 ' Annular inner wall package fluid erosion prevention set 201 ' one end, there are four radial ducts 200 for fluid erosion prevention set 201 ' "；Input section 1 ' and sleeve Pipe I 2 ' engaging portion bellows seal 300 is set, annular corrugated blind pipe is arranged in the engaging portion of deferent segment 1 " with sleeve II 2 " 308 ', annular corrugated 308 ' inner cavity of blind pipe passes through the perforation of the preceding pressure of communicating pipe 600 and valve；It is corresponding with I 2 ' end face of sleeve outer Two symmetrical circular holes are arranged in 8 end of valve body, and compressed spring 4 passes through circular hole and 507 ' back segment of screw rod is then threaded into circular hole Its leading portion for reducing diameter is inserted into 4 inner ring of compressed spring, and compressed spring 4 directes reach I 2 ' end face of sleeve；1 ' ring wall of input section is provided with Two radial backstops 609, after valve is closed, one of backstop 609 and inner cavity 200 are corresponding；1 " ring of deferent segment The backstop 609 of a radial direction is arranged in wall.

It is open state, at this point, pipe network pressure medium is normal, into annular corrugated 308 ' inner cavity of blind pipe shown in attached drawing 21 The thrust that medium is formed is less than the elastic force of compressed spring 4, and " direction is mobile, " the annular of throat of sleeve II 2 to deferent segment 1 for valve body 2 Valve seat 201 leaves annular spool 101, the duct 200 of fluid erosion prevention set 201 ' " it is opposite with the recirculation hole 103 of input section 1 ' to communicate, it is situated between Mass flow is logical.

It is emergency cut-off state shown in attached drawing 22, at this point, pipe network pressure medium exception superelevation, into annular corrugated blind pipe The thrust that 308 ' inner cavity high-pressure mediums are formed is greater than the elastic force of compressed spring 4, and valve body 2 is mobile to 1 ' direction of input section, sleeve II 2 " ring-shaped valve seats 201 with annular spool 101 of throat are closely affixed, and cut off medium flow field.

Embodiment 16

Referring to attached drawing 23, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for safety, non-return, pressure opening and closing；Institute Two axial end faces for stating 100 kernel of interlayer are circular conical surfaces；" there are four radial recirculation holes 103 for input section 1 ' and deferent segment 1； Sleeve I 2 ' annular inner wall package fluid erosion prevention set 201 ' one end, there are four radial ducts 200 for fluid erosion prevention set 201 ' "；Input section 1 ' with sleeve I 2 ' engaging portion its inner cavity of annular corrugated blind pipe 308 ' be set penetrated through by the preceding pressure of communicating pipe 600 and valve；Output Bellows seal 300 is arranged in the engaging portion of section 1 " with sleeve II 2 "；" corresponding 8 end of outer valve in end face is set with sleeve II 2 Set two symmetrical circular holes, compressed spring 4 passes through circular hole, then, 507 ' back segment of screw rod is threaded into circular hole its minor diameter Leading portion is inserted into 4 inner ring of compressed spring, and compressed spring 4 directes reach II 2 " end face of sleeve；It is non-return that two radial directions are arranged in 1 ' ring wall of input section Device 609, after valve is closed, one of backstop 609 and inner cavity 200 are corresponding；" diameter is arranged in ring wall to deferent segment 1 To backstop 609.

Shown in attached drawing 23, be open state, at this point, into annular corrugated 308 ' inner cavity of blind pipe pressure medium formed push away Power is greater than the elastic force of compressed spring 4, and " direction is mobile, and " ring-shaped valve seats 201 of throat leaves ring to sleeve II 2 to deferent segment 1 for valve body 2 Shape spool 101, the duct 200 of fluid erosion prevention set 201 ' " opposite with the recirculation hole 103 of input section 1 ' to communicate, flow of media.

Embodiment 17

Referring to attached drawing 24, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, for safety, non-return, pressure opening and closing；Institute Two axial end faces for stating 100 kernel of interlayer are circular conical surfaces；Input section 1 ' and deferent segment 1 " radial recirculation hole 103 there are four, Recirculation hole 103 has the inclination angle of fair current；Sleeve II 2 " annular inner wall package fluid erosion prevention set 201 ' one end, fluid erosion prevention set 201 ' has Four radial ducts 200 "；Input section 1 ' and sleeve I 2 ' engaging portion bellows pressure chamber 306 is set, 1 ' ring wall of input section has Radial intercommunicating pore 105 is " with radial backstop 609；Sylphon seal is arranged in the engaging portion of deferent segment 1 " with sleeve II 2 " Part 300, deferent segment 1 " ring wall also have radial communication hole 105 "；Sleeve II 2 " end face and corresponding 8 inner face of outer valve it Between be arranged compressed spring 4.

It is open state shown in attached drawing 24, at this point, the pressure medium into 306 inner cavity of bellows pressure chamber is greater than compression The elastic force of spring 4 pushes valve body 2 to deferent segment 1, and " direction is mobile, and " ring-shaped valve seats 201 of throat leaves annular spool to sleeve II 2 101, the recirculation hole 103 in the duct 200 " with deferent segment 1 " of fluid erosion prevention set 201 ' is opposite to be communicated, flow of media.

Embodiment 18

Referring to attached drawing 25,26,27, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment is promptly cut for two-way booster It is disconnected；Two axial end faces of 100 kernel of interlayer are circular conical surfaces；" there are four radial recirculation holes for input section 1 ' and deferent segment 1 103；Sleeve I 2 ' annular inner wall package fluid erosion prevention set 201 ' one end, there are four radial ducts 200 for fluid erosion prevention set 201 ' "；It is defeated Enter section 1 ' and sleeve I 2 ' engaging portion be arranged its inner cavity of annular corrugated blind pipe 308 ' by the communicating pipe 600 with control valve 605 and The preceding pressure of valve penetrates through, and penetrates through with the rear pressure of the communicating pipe I 601 with control valve II 606 and valve, meanwhile, in the middle part of communicating pipe I 601 There is branch pipe connection 8 inner cavity 8 ' of outer valve with check-valves 608；Bellows is arranged in the engaging portion of deferent segment 1 " with sleeve II 2 " Sealing element 300；" two symmetrical circular holes of corresponding 8 end of the outer valve setting in end face, compressed spring 4 pass through circle with sleeve II 2 Then 507 ' back segment of screw rod is threaded into its leading portion insertion 4 inner ring of compressed spring for reducing diameter of circular hole, compressed spring 4 by hole Direct reach II 2 " end face of sleeve；Two radial backstops 609 are arranged in 1 ' ring wall of input section, and after valve is closed, one of them is non-return Device 609 and inner cavity 200 are corresponding；" backstop 609 of a radial direction is arranged in ring wall to deferent segment 1.

It is open state shown in attached drawing 25, at this point, opening control valve 605, the medium of pipe network is by entering communicating pipe 600 The thrust that its pressure medium of annular corrugated 308 ' inner cavity of blind pipe is formed is greater than the elastic force of compressed spring 4, and valve body 2 is " square to deferent segment 1 To movement, " ring-shaped valve seats 201 of throat leaves annular spool 101 to sleeve II 2, and the duct 200 of fluid erosion prevention set 201 ' is " with input The recirculation hole 103 of section 1 ' is opposite to be communicated, flow of media；It close to balance and then is beaten in the pressure of the preceding pressure of the rear pressure and valve of valve Control valve II 606 is opened, communicating pipe I 601 and the perforation of 308 ' inner cavity of annular corrugated blind pipe, valve are in the open state always.

It is emergency cut-off state shown in attached drawing 26, the rear pressure pipeline of valve bursts, and the pressure medium entered from the preceding pressure injection of valve is logical It spends communicating pipe 600 and flows directly into the rear pressure of valve communicating pipe I 601, bullet is compressed in annular corrugated 308 ' inner cavity no pressure of blind pipe support The elastic force of spring 4 pushes the axial return of valve body 2, and " ring-shaped valve seats 201 of throat is closely affixed sleeve II 2 with annular spool 101, is cut Disconnected medium flow field；Then, control valve 605 and control valve II 606 are successively closed in long-range control.

It is emergency cut-off state shown in attached drawing 27, at this point, the preceding pressure pipeline of valve bursts, the medium entered from the rear pressure injection of valve Pressure passes through communicating pipe I 601 and flows directly into the preceding pressure of valve communicating pipe 600, annular corrugated 308 ' inner cavity no pressure of blind pipe support, The elastic force of compressed spring 4 pushes the axial return of valve body 2, sleeve II 2 " ring-shaped valve seats 201 of throat and the close phase of annular spool 101 Patch cuts off medium flow field；Then, control valve II 606 and control valve 605 are successively closed in long-range control.

Embodiment 19

Referring to attached drawing 28,29,30, dual-valve body fluid erosion prevention core pipe valve described in the present embodiment, attached drawing 28,29, for safety, Non-return, pressure opening and closing；Attached drawing 30, one, for the artificial control emergency cut-off under emergency case, two, for opening and closing；The interlayer Two axial end faces of 100 kernels are ligulate triangle slope surfaces 100 '；" there are two radial recirculation holes for input section 1 ' and deferent segment 1 103；Sleeve I 2 ' annular inner wall package fluid erosion prevention set 201 ' one end, there are two radial ducts 200 for fluid erosion prevention set 201 ' "；It is defeated Enter section 1 ' and sleeve I 2 ' engaging portion setting bellows pressure chamber 306,1 ' ring wall of input section has radial intercommunicating pore 105 " and diameter To backstop 609；Bellows seal 300, deferent segment 1 is arranged in the engaging portion of deferent segment 1 " with sleeve II 2 " " ring wall Also there is radial communication hole 105 "；" two symmetrical circular holes of corresponding 8 end of the outer valve setting in end face, compress bullet with sleeve II 2 Spring 4 passes through circular hole, then, 507 ' back segment of screw rod is threaded into its leading portion insertion 4 inner ring of compressed spring for reducing diameter of circular hole, Compressed spring 4 directes reach II 2 " end face of sleeve；Be equipped with the screw rod 507 ' of two kinds of different length sizes, short screw 507 ' for safety, The flexible adjustment for the compressed spring 4 that non-return, pressure open and close, long bolt 507 ' is in emergency circumstances artificially closing valve；Outer valve Ball 707 is set between 2 outer ring surface of 8 inner ring surface of body and valve body and is attached to 2 outer ring surface of valve body.

For safety, non-return, pressure opening and closing:

It is open state shown in attached drawing 28, at this point, the pressure medium into 306 inner cavity of bellows pressure chamber is greater than compression The elastic force of spring 4 pushes valve body 2 to deferent segment 1, and " direction is mobile, and " ring-shaped valve seats 201 of throat leaves annular spool to sleeve II 2 101, the duct 200 of fluid erosion prevention set 201 ' " opposite with the recirculation hole 103 of input section 1 ' to communicate, flow of media.

It shown in attached drawing 29, is in off state, at this point, the pressure medium into 306 inner cavity of bellows pressure chamber is less than compression The elastic force of spring 4, the axial return of valve body 2, " ring-shaped valve seats 201 of throat is closely affixed sleeve II 2 with annular spool 101, cutting Medium flow field.

The setting of fluid erosion prevention set 201 ', terminates safety valve and continues absolutely what pressure medium continuously emerged when facing point of release Continuous release phenomenon.

For closing:

It shown in attached drawing 30, is in off state, at this time, it may be necessary to close valve, lays down short screw 507 ' and compressed spring 4, make The axial return of valve body 2 is pushed with long bolt 507 ', cuts off medium flow field.

Claims (10)

1. dual-valve body fluid erosion prevention core pipe valve, the valve core tube (1) for being wrapped in outer valve (8) inner cavity (8 '), which is that fixing piece is coaxial, to be run through In the sleeve II (2 ") of the sleeve I (2 ') of valve body (2), valve body (2) inner cavity (200) and valve body (2)；Have in the middle part of valve core tube (1) Axial interlayer (100), interlayer (100) are made of the intermediate pipeline section of kernel and the valve core tube (1) of kernel radial radiation；Interlayer (100) axially adjacent both sides are at least one radial recirculation hole (103) of input section (1 ') and deferent segment (1 ") respectively；It surround The annular spool (101) of interlayer (100) and the ring-shaped valve seats (201) of sleeve II (2 ") throat constitute sealing pair；Input section (1 ') Outer diameter be greater than the outer diameter of deferent segment (1 "), input section (1 ') and sleeve I (2 ') and deferent segment (1 ") and sleeve II (2 ") are axis Cellular type cooperates its engaging portion to be respectively provided with sealing；There is drive in the end face direction of at least one sleeve of sleeve I (2 ') and sleeve II (2 ") Dynamic element；Under the action of both direction potential energy, the valve body (2) of outer valve (8) inner cavity (8 ') is wrapped in relative to valve core tube (1) It is mobile to make axial reciprocating；It is characterized in that, the annular inner wall package of at least one sleeve of sleeve I (2 ') and sleeve II (2 ") is anti- One end of erosion set (201 '), fluid erosion prevention set (201 ') protrude into valve body (2) inner cavity (200), when valve opening, fluid erosion prevention set The radial duct (200 ") and at least one section of recirculation hole (103) of input section (1 ') and deferent segment (1 ") of (201 ') are corresponding simultaneously Through-lumen (200), when valve is closed, annular inner wall closing input section (1 ') of fluid erosion prevention set (201 ') and deferent segment (1 ") At least one section of recirculation hole (103).

2. dual-valve body fluid erosion prevention core pipe valve described in accordance with the claim 1, which is characterized in that the input section and deferent segment (1 ") The radial backstop (609) of at least one section of ring wall setting.

3. dual-valve body fluid erosion prevention core pipe valve described in accordance with the claim 1, which is characterized in that the ring wall of the outer valve (8) has It passes through and connects the rear pressure of inner cavity (8 ') and valve one communicating pipe (602), check-valves (608) are set in the middle part of communicating pipe (602).

4. according to any dual-valve body fluid erosion prevention core pipe valve of claims 1 to 3, which is characterized in that the input section (1 ') The sealing being arranged with the engaging portion of sleeve I (2 ') and deferent segment (1 ") and sleeve II (2 ") is at least one of: one, sealing ring (302)；Two, bellows seal (300)；Three, annular spool (101 ') and sleeve when valve is closed, around input section (1 ') The flexible seal member of I (2 ') end constitutes secondary sealing pair；Four, annular spool when valve opening, around deferent segment (1 ") The lip of (101 ') and sleeve II (2 ") end also constitutes secondary sealing pair；One of sleeve of sleeve I (2 ') and sleeve II (2 ") The end of pipe is at least connected with the valve rod base (504 ') that a valve rod (504) passes through corresponding outer valve (8) end, valve rod (504) it is sealed with the engaging portion of valve rod base (504 ') setting.

5. dual-valve body fluid erosion prevention core pipe valve according to claim 4, which is characterized in that outer valve (8) the end setting One with the guide sleeve (808) of valve rod (504) same axis, the effect of guide sleeve (808) is one of them: one, valve rod (504) It is connect across guide sleeve (808) with the end of sleeve I (2 ') and one of sleeve of sleeve II (2 ")；Two, sleeve I (2 ') and The end of one of sleeve of sleeve II (2 ") connects a guide rod (504 "), and the other end insertion of guide rod (504 ") is led Into set (808).

6. according to any dual-valve body fluid erosion prevention core pipe valve of claims 1 to 3, which is characterized in that the input section (1 ') The sealing being arranged with the engaging portion of sleeve I (2 ') and deferent segment (1 ") and sleeve II (2 ") is at least one of: one, sealing ring (302)；Two, bellows seal (300)；Three, annular spool (101 ') and sleeve when valve is closed, around input section (1 ') The flexible seal member of I (2 ') end constitutes secondary sealing pair；Four, annular spool when valve opening, around deferent segment (1 ") The lip of (101 ') and sleeve II (2 ") end also constitutes secondary sealing pair；In sleeve I (2 ') end face and corresponding outer valve (8) More than two well-balanced arrangements are respectively provided between inner face between (the 2 ") end face of sleeve II and corresponding outer valve (8) inner face Ripple blind pipe (308), ripple blind pipe (308) the inner cavity rotation on axial both sides is full of and bleeds off driving media drive valve body (2) The mobile opening and closing for realizing valve of axial reciprocating.

7. according to any dual-valve body fluid erosion prevention core pipe valve of claims 1 to 3, which is characterized in that the input section (1 ') The sealing being arranged with the engaging portion of sleeve I (2 ') and deferent segment (1 ") and sleeve II (2 ") is at least one of: one, sealing ring (302)；Two, bellows seal (300)；Three, annular spool (101 ') and sleeve when valve is closed, around input section (1 ') The flexible seal member of I (2 ') end constitutes secondary sealing pair；Four, annular spool when valve opening, around deferent segment (1 ") The lip of (101 ') and sleeve II (2 ") end also constitutes secondary sealing pair；In sleeve I (2 ') end face and corresponding outer valve (8) More than two well-balanced arrangements are respectively provided between inner face between (the 2 ") end face of sleeve II and corresponding outer valve (8) inner face Ripple blind pipe (308), ripple blind pipe (308) inner cavity on one side is full of driving medium, ripple blind pipe (308) lumen shaft on one side To built-in compressed spring (4).

8. according to any dual-valve body fluid erosion prevention core pipe valve of claims 1 to 3, which is characterized in that the input section (1 ') Bellows pressure chamber (306) are set with the engaging portion of sleeve I (2 '), bellows pressure chamber (306) inner cavity penetrates through valve by channel Preceding pressure；The engaging portion of deferent segment (1 ") and sleeve II (2 ") is arranged annular corrugated its inner cavity of blind pipe (308 ') and is full of driving Jie Matter；Annular corrugated blind pipe (308 ') inner cavity axial direction face area is greater than bellows pressure chamber (306) inner cavity axial direction face area.

9. according to any dual-valve body fluid erosion prevention core pipe valve of claims 1 to 3, which is characterized in that the input section (1 ') It is another that annular corrugated blind pipe (308 ') is set with one of engaging portion of sleeve I (2 ') and deferent segment (1 ") and sleeve II (2 ") Bellows seal (300) are arranged in a engaging portion, and annular corrugated blind pipe (308 ') inner cavity is full of driving medium；Sleeve I (2 ') and Compressed spring (4) are set between one of sleeve end face of sleeve II (2 ") and corresponding outer valve (8) inner face.

10. according to any dual-valve body fluid erosion prevention core pipe valve of claims 1 to 3, which is characterized in that the input section (1 ') Bellows pressure chamber (306) are set with the engaging portion of sleeve I (2 '), inner cavity penetrates through the preceding pressure of valve by channel；Deferent segment Bellows seal (300) are arranged in the engaging portion of (1 ") and sleeve II (2 ")；In (the 2 ") end of sleeve II and corresponding outer valve Compressed spring (4) are set between body (8) inner face.