CN108443539A

CN108443539A - Check valve

Info

Publication number: CN108443539A
Application number: CN201810436874.XA
Authority: CN
Inventors: 冯森蕾
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-09
Filing date: 2018-05-09
Publication date: 2018-08-24

Abstract

The present invention relates to a kind of check valve bodies efficiently supplied for inhibiting the generation trembled and capable of realizing fluid.The check valve body (48) is being set as upstream or downstream side displacement, and to abut with the valve seat by the pre- sealing process power towards upstream side out of the downstream-side channel (42) that downstream extends of valve seat (36) with the opening for importing fluid.The check valve body includes：Fastener (48d) is arranged on the peripheral surface (48b) of check valve body；Resistance to sliding applies member supporting portion (48b 1), and applying component (52) to resistance to sliding supports, and the check valve body upstream or when downstream side displacement wall for making resistance to sliding apply component and downstream-side channel slides；And force application component supporting part (48b 2), it supports the force application component (50b) to exert a force to the upstream side, the force application component applies component to the resistance to sliding and exerts a force to the upstream side, to increase in the outer diameter for being kept for the in the state of of making resistance to sliding application component be engaged with the fastener (48d) resistance to sliding is made to apply component.

Description

Check valve

Technical field

The present invention relates to a kind of check valves, more particularly, it relates to a kind of check valve of so-called actuating formula, being set as can It is exerted a force relative to valve seat in the valve body (check valve body) of shell intrinsic displacement, makes valve body from valve seat by the Fluid pressure of upstream side Separation, so as to realize the one-way flow from upstream side downstream of fluid.

Background technology

It, will be from the gas or liquid for being stored with high pressure low temperature such as in the hydrogen supply station for supplying hydrogen to Hydrogen Energy motor vehicle The box member (socket) for the supply pipe front end that the station hold-up tank of hydrogen extends with positioned at from the hydrogen hold-up tank of Hydrogen Energy motor vehicle The pin member (plug) of the outer end for the hydrogen reception pipe extended links, to carry out the supply of hydrogen.In the male contact structure The list for only allowing to prevent flowing in contrast to the flowing of the hydrogen hold-up tank of Hydrogen Energy motor vehicle from supply pipe is provided in part To valve.

In the case where using the check valve of actuating formula as the check valve, there is a problem of generating following possibility Property.That is, when carrying out filling of the hydrogen to the hydrogen hold-up tank of Hydrogen Energy motor vehicle, the confession of pressure in hydrogen hold-up tank close to hydrogen supply station To the pressure in pipe, the upstream side of the check valve and the pressure difference in downstream side become smaller, therefore as valve body exerts a force to valve seat The state of active force and the pressure difference containing generates and frequently repeats valve body and be seated at the so-called of valve seat or the state detached with valve seat Tremble.Supply in the state of such stabilization for interfering hydrogen of trembling, will produce the durable of the generation of noise, valve body or valve seat Reduction this problem of property；In order to eliminate involved problem, following check valve is developed, forms stream in valve body Road makes to circulate in the flow path by fluid that valve seat flows into valve body, and increases the flow path resistance of the flow path to anti- Pressure oscillation drastically is only led to the problem of before and after the valve body to eliminate (patent document 1) as above.

Citation

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2011-7275.

Invention content

Problems to be solved by the invention

Check valve disclosed in Patent Document 1 is effective in terms of inhibiting the generation trembled, however with increase flow path resistance pair The supply of ground fluid is answered to spend the time.For example, due to it is expected that carry out supply station at high speed supplies to the hydrogen of Hydrogen Energy motor vehicle, because This needs the countermeasure for the problem；The present invention is completed in view of the above subject, and its purpose is to provide a kind of inhibition shakes That quivers generates and can carry out the check valve of fluid efficiently supplied and the check valve body applied to the check valve.

Solution for solving the problem

That is, the present application provides a kind of check valve body, being set as can be in the downstream-side channel marked off by cylindrical wall Upstream or downstream side displacement, it and is abutted with valve seat by the pre- sealing process power towards upstream side, the cylindrical wall is from tool There is the valve seat for the opening for importing the fluid from upstream-side channel downstream to extend,

The check valve body has：

Fastener is arranged on the peripheral surface of the check valve body；

Resistance to sliding applies member supporting portion, is abutted with the downstream side of the fastener of the peripheral surface, and hinder sliding Power applies component and is supported, and the check valve body upstream or when downstream side displacement makes the resistance to sliding apply structure Part slides in the cylindrical wall；And

Force application component supporting part, the resistance to sliding for being located at the peripheral surface apply the downstream side in member supporting portion, and right The force application component to exert a force to the upstream side is supported, and the force application component applies component to the resistance to sliding to be applied to the upstream side Power makes the resistance to sliding apply to make the resistance to sliding apply in the state that component is engaged with the fastener in holding The outer diameter of component is added to increase.

The check valve body can apply component to resistance to sliding as described above and support, and resistance to sliding can be made to apply The peripheral wall of component and the downstream-side channel for being set with the check valve body slides, to apply before and after because to the check valve body The variation of the differential pressure of Fluid pressure and so that the check valve body is wanted to the upstream side or when the displacement of downstream side, generate the cunning fought therewith Thus dynamic resistance inhibits the check valve body to be changed and sensitive displacement for above-mentioned differential pressure, can inhibit to tremble as described above.

The present invention provides a kind of check valve, has：

Check valve body described in claim 1；

Shell has the valve seat and the downstream-side channel；

Resistance to sliding applies component, and the resistance to sliding for being set in the check valve applies in member supporting portion；And

Force application component is set on the force application component supporting part of the check valve body, and by the resistance to sliding Apply component to exert a force to the upstream side, in the state for keeping that the resistance to sliding is made to apply component and fastener locking Under so that the resistance to sliding is applied component outer diameter increase,

The force application component has：

Fastened component applies component with the resistance to sliding and engages；And

The fastened component is pressed on the resistance to sliding from downstream side and applies component by spring member.

The check valve has the resistance to sliding installed in check valve body as described above and applies component and force application component, because This can play with about the identical effect of effect illustrated by above-mentioned check valve body；Specifically, may be used following Mode, that is,

The fastened component is configured to the upstream side displacement on the peripheral surface of the check valve body, and There is protrusion on the inner peripheral surface that the fastened component and the peripheral surface of the check valve body slide,

Has recess portion on the peripheral surface of the check valve body, the recess portion accepts the protrusion of the fastened component And enable protrusion displacement in the longitudinal direction, and with by preventing described to engage with the protrusions snap The front-end edge of the displacement of component forwards.

This is because, by preventing resistance to sliding from applying the excessive deformation of component so that apply component by the resistance to sliding The resistance to sliding of generation is suitable, and increases the usage time that the resistance to sliding applies component；More specifically, may be used as Under mode, that is, the fastened component has from downstream side and the press section that engages of resistance to sliding application component, described Press section have press surface, the press surface be formed as surrounding the ring-type of the peripheral surface of the check valve body and from downstream side with The resistance to sliding applies component engaging, and the press surface be formed as with towards the upstream side and tip attenuates.

The press surface to be attenuated by the way that tip as described above is arranged applies component to diameter to be easy to carry out resistance to sliding To deformation.

Specifically, resistance to sliding, which applies component, can be formed as the segmentation ring-type that a circumferential part is cut off.Thus It is easy to carry out that following mode may be used to radial deformation, that is, the resistance to sliding applies component and is formed as described in encirclement The ring-type of the peripheral surface of check valve body, and there is the outside circumference slided in the cylindrical wall, be formed in the outside circumference And the recess portion in gap is formed between the cylindrical wall；When resistance to sliding applies component displacement together with check valve, The resistance to sliding applies the fluid flowed between component and the peripheral wall of downstream-side channel and passes through in the recess portion, to inhibit to flow Foreign matter in body enters the slipper between resistance to sliding application component and peripheral wall, so that the resistance to sliding is applied component long Phase suitably functions.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Description of the drawings

Fig. 1 be mounted to the outboard end of the hydrogen reception pipe of Hydrogen Energy motor vehicle, have the plug of the check valve of the present invention Longitudinal section view.

Fig. 2 is the end view drawing of the check valve body out of upstream side observation chart 1 check valve.

Fig. 3 is mounted to the end view drawing that the resistance to sliding in check valve body applies component.

Fig. 4 is the solid for the fastened component for being formed in the force application component for applying component force in check valve body to resistance to sliding Figure.

Fig. 5 is the figure of the variation for the fastened component for indicating Fig. 4.

Specific implementation mode

Fig. 1 is that have to extend with from the hydrogen hold-up tank of (not shown) Hydrogen Energy motor vehicle in (when observing in figure) right end The plug (pin member) 12 for the threaded portion 10 that the outboard end of hydrogen reception pipe is screwed, setting are supplied in (also (not shown)) hydrogen It is chimeric with plug 12 from the left side of Fig. 1 to the socket (box member) of the front end of the hydrogen supply pipe in station, to which plug 12 connects Receive the supply of hydrogen.Here, as socket (box member), plug (pin member), it is assumed that be mounted in hydrogen supply station The box member (socket) of the front end of hydrogen supply pipe is entrenched in same heart shaped to be extended from the hydrogen hold-up tank of Hydrogen Energy motor vehicle Around the pin member (plug) of the outboard end of hydrogen reception pipe, furthermore, it is assumed that being carried out relative to plug 12 in socket this In the state of chimeric, by the hydrogen supply nozzle extended along the central axis of the socket the left end institute (not shown) for being inserted into plug 12 In the nozzle insert port 16 of setting.

In addition, in the example in the figures, the nozzle insert port 16 of plug 12 has：The first jet receiving part 18 of major diameter, It is used to accept the hydrogen supply nozzle of socket, and the hydrogen supply nozzle of the socket is for supplying the relatively low pressure such as 35MPa Hydrogen；The second nozzle receiving part 20 of path is used to accept the supply nozzle of socket, and the supply nozzle of the socket is for supplying Such as 70MPa etc. compare high pressure hydrogen, these first and second nozzle receiving part 18,20 on be respectively arranged with o-ring 22 With o-ring 24, washer 26 is provided with before and after o-ring 24；Plug 12 has the length along the plug from nozzle insert port 16 The flow path 28 that direction extends, the exit opening 29 of right end when observing in the figure of the flow path 28 are store with from the hydrogen of Hydrogen Energy motor vehicle Deposit the outboard end connection for the hydrogen reception pipe that tank extends.In flow path 28, be provided with towards downstream filter 30 and The check valve 32 of the present invention.

In the illustrated embodiment, the shell 34 for dividing the flow path 28 of the plug 12 has：The shell upstream structure of tubular Part 34a divides the upstream-side channel 28a of the flow path 28；Cricoid intermediate member 34b supports filter 30 and constitutes The valve seat 36 of check valve 32；And the housing downstream component 34c of tubular, pass through threaded portion 40 and shell upstream member 34a spiral shells It closes, intermediate member 34b is fixed in the shell 34, and divide the downstream-side channel 42 from valve seat 36 to exit opening 29；It crosses Filter 30 has：The downstream component 30b of solid upstream end component 30a and tubular, it is arranged in upstream end and downstream The filter member 30c of tubular between component 30a, 30b and between upstream end and downstream component 30a, 30b Its length direction mutually vacates the multiple discoid filter component 30d being positioned apart from, and downstream component 30b is screwed on centre In component 34b, which keeps same heart shaped with upstream-side channel 28a.The hydrogen supplied in flow path 28a to the upstream side is at this It is flowed around the periphery of filter 30, passes through the filter member 30c, discoid filter component 30d and downstream of tubular The axial flow path 30e of component 30b and flow further downstream.

Intermediate member 34b has the axis of the axial flow path 30e cooperations with the downstream component 30b of filter 30 in the axial direction To flow path 44, the end of downstream side of the axial flow path 44 is formed with the valve seat 36 extended towards downstream.The list of the present invention Include to valve 32：The valve seat 36；Check valve body 48, being set as can be in the downstream effluent downstream extended from the valve seat 36 In road 42 upstream or downstream side displacement；And force application component (helical spring) 50, which is applied to the upstream side Power presses the upstream side end 48a of the check valve body 48 to valve seat 36, to be used to close to the check valve body 48 application The pre- sealing process power of the exit opening 44a of the axial flow path 44 surrounded by the valve seat 36.

Check valve body 48 has：The first slide protrusion on peripheral surface 48b near upstream side end 48a is set 48c, the second slide protrusion 48d being arranged on peripheral surface 48b from the position that slide protrusion 48c is downstream detached, edge Internal flow path 48e that the axis of check valve body 48 extends, by the check valve body 48 of internal flow path 48e and downstream-side channel 42 Peripheral part 42a connection radial flow path 48f.First and second slide protrusion 48c, 48d is all formed as cricoid protrusion, And the peripheral wall surfaces 42b of their peripheral surface and downstream-side channel 42 has small gap, check valve body 48 is as in downstream side Guiding piece when 42 intrinsic displacement of flow path and function.In addition, as shown in Fig. 2, the first slide protrusion 48c in the circumferential each other every Open compartment of terrain be provided with for make fluid circulate four recess portion 48c-1, from valve seat 36 downstream into fluid (hydrogen) pass through The recess portion 48c-1 of first slide protrusion 48c, and flowed to exit opening 29 across radial flow path 48f and internal flow path 48e； The downstream side of the second slide protrusion 48d on the peripheral surface 48b of check valve body 48 is equipped with：Cricoid resistance to sliding is supported to apply The resistance to sliding of component 52 is added to apply member supporting portion 48b-1, branch honours the resistance to sliding and applies component 52 towards the second sliding The force application component supporting part 48b-2 of the force application component 50 of protrusion 48d forces.Force application component 50 includes：It can be in force application component branch On bearing portion 48b-2 sliding and engage from downstream side and resistance to sliding application component 52 cricoid fastened component 50a, by the card It closes component 50a and applies the spring member 50b that component 52 presses towards resistance to sliding.

Second slide protrusion 48d applies component 52 as limit slippage resistance and is intended to upwards because of the active force of force application component 50 It swims the fastener of side displacement and plays a role, which applies component 52 in the state of applying the active force by as card Second slide protrusion 48d locking of stop and deformed to radial outside, thus for the check valve body 48 to the upstream side with And the displacement in downstream side applies resistance to sliding.

Specifically, as shown in figure 3, resistance to sliding, which applies component 52, is formed as point that the part in circumferential direction has been cut off The form for cutting ring, as shown in Fig. 1 and Fig. 4, fastened component 50a have snap-latch surface 50a-1, snap-latch surface 50a-1 be formed as with It towards upstream and taper surface that tip attenuates and applies component 52 with resistance to sliding and engage, snap-latch surface 50a-1 is formed as prolonging The radially inner side that resistance to sliding applies component 52 is extended to, power of the application of component 52 towards radial outside is applied to the resistance to sliding. Resistance to sliding applies component 52 and is not necessarily required by the way of dividing ring, as long as being used as fastener by force application component 50 Second slide protrusion 48d is pressed and can be deformed radially, then can be arbitrary mode；Fastened component 50a has to bullet Downstream side path the part 50a-2, spring member 50b that the upstream side of spring component 50b is supported are from the downstream side small diameter portion Divide 50a-2 to rise downstream to extend, side engages with the stepped part 42c formed on downstream-side channel 42 downstream, the spring structure Part 50b is compressed between stepped part 42c and fastened component 50a.In the example in the figures, force application component 50 as it is above-mentioned that Sample makes the resistance to sliding apply structure so that resistance to sliding is applied component 52 to the second slide protrusion 48d pressings as fastener The mode that part 52 is extended to radial outside functions, meanwhile, also being pressed the check valve body 48 to valve seat 36 to apply The mode of the pre- sealing process power of the above-mentioned check valve body 48 functions.However, it is also possible to by respectively by different Force component carries out the two functions.

Fig. 5 shows the variation of fastened component 50a.Fastened component 50a has the rear end along inner circumferential surface 50a-3 Edge towards radially inner side cricoid protrusion 50a-4, in the peripheral surface 48b of the force application component supporting part 48b-2 of check valve body 48 On, it is provided with and accepts protrusion 50a-4 to be capable of the cricoid recess portion 48b-4 of displacement in the longitudinal direction.Protrusion 50a-4 can It is moved between the front-end edge 48b-5 and end edge 48b-6 of recess portion 48b-4, fastened component 50a can be relative to check valve body 48 displacements in a certain range.It prevents to make resistance to sliding apply 52 excessive deformation of component because of the force of force application component 50 in this way, and And prevent because apply from the upstream side of fastened component 50a hydrogen pressure due to downstream significantly displacement lead to not suitably by Resistance to sliding is pressed to apply component 52.

As described above, it is illustrated that plug be mounted on the outside of hydrogen reception pipe extended from the hydrogen hold-up tank of Hydrogen Energy motor vehicle End, it is chimeric with mounted on the socket of front end of hydrogen supply pipe of hydrogen supply station, when the hydrogen supply nozzle is inserted into nozzle insert port 16 When supply that is interior and starting liquid or gaseous hydrogen, by the pressure of the hydrogen supplied, check valve body 48 overcomes by force application component 50 apply pre- sealing process power and downstream displacement and detached with valve seat 36, to carry out the supply of hydrogen.When carrying out to hydrogen The hydrogen supply of the hydrogen hold-up tank of energy motor vehicle when the pressure in the hydrogen reception pipe extended from the tank being made to increase, is applied to unidirectional The pressure difference of upstream side and downstream side on valve body 48 becomes smaller, and the final check valve body 48 is seated at by pre- sealing process power On valve seat, the fluid flowing path 42 in the plug is closed.When the pressure difference of the upstream side and downstream side that are applied in check valve body 48 Become smaller close to pre- sealing process power make they become containing state when, be applied to check valve body 48 above-mentioned pressure difference generate change It is dynamic, however in the check valve 32 of the present invention, it is provided with resistance to sliding as described above in the check valve body 48 and applies component 52, therefore the check valve body 48 is inhibited to become for the pressure and move and sensitively react, as a result, can inhibit above-mentioned Tremble.

More than, to the embodiment party of check valve using the present invention in the plug in the hydrogen reception pipe of Hydrogen Energy motor vehicle is arranged Formula is illustrated, however the check valve of the present invention is not limited to this, additionally it is possible to for various fluids the problem of trembling In pipeline.

Reference sign

10 threaded portions；12 plugs (male contact)；16 nozzle insert ports；18 first jet receiving parts；20 second nozzle receiving parts； 22,24 o-ring；26 washers；28 flow paths；28a upstream-side channels；29 exit openings；30 filters；The upstream ends 30a component； The downstreams 30b component；30c filter members；30d discoid filter components；30e axial flow paths；32 check valves；34 shells；34a Shell upstream member；34b intermediate members；34c housing downstream components；36 valve seats；40 threaded portions；42 downstream-side channels；Around 42a Part；42b peripheral wall surfaces；42c stepped parts；44 axial flow paths；44a exit openings；48 check valve bodies；48a upstream side ends；48b Peripheral surface；48b-1 resistances to sliding apply member supporting portion；48b-2 force application component supporting parts；The cricoid recess portions of 48b-3；48b-4 Front-end edge；The first slide protrusions of 48c；48c-1 recess portions；48d fasteners (the second slide protrusion)；48e internal flow paths；48f is radial Flow path；50 force application components (helical spring)；50a fastened components；50a-1 snap-latch surfaces；The downstream sides 50a-2 path part；In 50a-3 Circumferential surface；50a-4 protrusions；50b spring members；52 resistances to sliding apply component.

Claims

1. a kind of check valve, has：

Check valve body, be set as can in the downstream-side channel marked off by cylindrical wall upstream or downstream side displacement, and Abutted with valve seat by the pre- sealing process power towards upstream side, the cylindrical wall from import from upstream-side channel The valve seat of the opening of fluid downstream extends, and there is the check valve body fastener, resistance to sliding to apply member supporting Portion and force application component supporting part, the fastener are arranged on the peripheral surface of the check valve body, and the resistance to sliding applies Member supporting portion and the downstream side of the fastener of the peripheral surface abut, and apply component to resistance to sliding and support, And the check valve body upstream or when downstream side displacement makes the resistance to sliding apply component to slide in the cylindrical wall, The force application component supporting portion applies the downstream side in member supporting portion in the resistance to sliding of the peripheral surface, and to upward The force application component of trip side force is supported, and the force application component applies component to the resistance to sliding and exerts a force to the upstream side, from And so that the resistance to sliding is applied in the state that component is engaged with the fastener in holding makes the resistance to sliding apply component Outer diameter increase；

Shell has the valve seat and the downstream-side channel；

Resistance to sliding applies component, and the resistance to sliding for being set in the check valve body applies in member supporting portion；And

Force application component is set on the force application component supporting part of the check valve body, and by the resistance to sliding Apply component to exert a force to the upstream side, in the state of keeping that the resistance to sliding application component is made to engage with the fastener The outer diameter that the resistance to sliding applies component is set to increase,

The force application component has：

The fastened component is pressed on the resistance to sliding from downstream side and applies component by spring member,

The fastened component is configured to the upstream side displacement on the peripheral surface of the check valve body, and in institute State fastened component has protrusion on the inner peripheral surface of the peripheral surface sliding of the check valve body,

Has recess portion on the peripheral surface of the check valve body, the recess portion accepts the protrusion of the fastened component simultaneously And enable protrusion displacement in the longitudinal direction, and with by preventing the fastened component with the protrusions snap The front-end edge of displacement forwards.

2. check valve according to claim 1, wherein

The fastened component has applies the press section that component engages from downstream side with the resistance to sliding, and the press section has Press surface, the press surface are formed as surrounding the ring-type of the peripheral surface of the check valve body and from downstream sides and the resistance to sliding Apply component engaging, and the press surface be formed as with towards the upstream side and tip attenuates.

3. a kind of check valve, has：

4. check valve according to any one of claim 1 to 3, wherein

The resistance to sliding applies component and is formed as the segmentation ring-shaped that a circumferential part is cut off.

5. check valve according to claim 4, wherein

The resistance to sliding applies the ring-type that component is formed as surrounding the peripheral surface of the check valve body, and in the tubular The outside circumference slided on wall, the recess portion for being formed in the outside circumference and being formed with gap between the cylindrical wall.