CN207018695U - A kind of coaxial-type self-sealing joint - Google Patents
A kind of coaxial-type self-sealing joint Download PDFInfo
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- CN207018695U CN207018695U CN201720747741.5U CN201720747741U CN207018695U CN 207018695 U CN207018695 U CN 207018695U CN 201720747741 U CN201720747741 U CN 201720747741U CN 207018695 U CN207018695 U CN 207018695U
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Abstract
The utility model provides a kind of coaxial-type self-sealing joint, it is characterised in that：Including two through-type male and female joints being mutually inserted, the male and female joint is connected with pipeline respectively；The pin end has the adapter of one section of protrusion, and the female joint has sleeve pipe corresponding with adapter, and for its internal diameter slightly larger than the external diameter of adapter, socket is realized in energy and adapter；There is telescopic valve element inside the pin end, in axial direction have fluid passage between valve element and the public access casing；The pin end inner walls have the step backwards to interface direction, and the diameter of the valve element is more than the internal diameter at casing step, passes through elastomer seal between the step at the outer edge of the valve element；Pass through elastomer seal between described sleeve pipe and the adapter；The male and female connector exterior also has locking device.The utility model uses soft or hard dual-seal, good sealing effect, can bear the condition of work of HTHP.
Description
Technical field
Pipeline connecting part technical field is the utility model is related to, specifically, is related to a kind of coaxial-type self-sealing joint.
Background technology
Self-sealing joint is generally used for pipeline and quickly connected, and two joints is docked when in use, and connecting and tearing open
During unloading, minimum Fluid Overflow can be reached.Self-sealing joint is generally made up of parts such as joint housing, valve element, springs.Existing
Have in technology, the sealing of corresponding two joints, it is common practice to rubber ring is set in the port of valve element, inclined-plane knot is set in housing
Structure, by spring compression valve element, it is tightly pressed together the rubber ring of its end face and the inclined-plane of enclosure interior, so as to play sealing effect
Fruit.When two joints connect, valve element is opened by top backward, and the rubber ring of valve element and the inclined-plane of enclosure interior depart from, so that fluid
Conducting.But this structure, has one disadvantage in that：When Fluid pressure is very big, the power acted on joint valve element can be very big, causes valve
Core can not be opened, and connect extremely difficult, operation extremely inconvenience.
Chinese patent 201110410760.6 discloses a kind of Quick butt joint, including male and female joint, valve element, elasticity
Element, silently, the part such as sliding sleeve, valve seat, the prior art can bear larger pipeline inner pressure, and sealing effectiveness also compared with
It is good, but in docking, the problem of being still difficult to connect there is two joints.
Chinese patent 201120269034.2, which discloses, a kind of determines core joint, including valve body, valve seat, sliding sleeve, back-moving spring
Deng part, the prior art substantially improves the sealing property for determining core joint valve, solves existing self-sealing joint poor sealing performance
The problem of, but the joint design of the prior art, it is also no to solve the problems, such as two joints difficult connection when pressure is excessive.
Utility model content
The problem of to overcome the excessive joint of Fluid pressure present in prior art to be difficult to connection, the utility model provides
A kind of coaxial-type self-sealing joint, using self-sealing joint of the present utility model, no matter Fluid pressure is much, and valve element is all easy to be pushed up
Open, realize that pipeline is easily and fast connected.
The technical solution of the utility model is：A kind of coaxial-type self-sealing joint, it is characterised in that：It is mutually inserted including two
Through-type male and female joint, the pin end, female joint are connected with pipeline respectively；The pin end have one section protrusion connect
Pipe, the female joint have sleeve pipe corresponding with adapter, and its internal diameter can realize socket slightly larger than the external diameter of adapter with adapter；Institute
Stating has the valve element of telescopic action inside pin end, in axial direction have fluid to lead between valve element and the public access casing
Road；The pin end inner walls have the step backwards to interface direction, and the diameter of the valve element is more than interior at casing step
Footpath, pass through elastomer seal between the step at the outer edge of the valve element；Lead between described sleeve pipe and the adapter
Cross elastomer seal；Also there is locking device outside the pin end, female joint.
On this basis, also having in the pin end has sealing shroud, has stream between its outer wall and pin end inner walls
Body passage, the sealing shroud have the cavity of depression, and the opening of cavity is in towards adapter, the housing of the sealing shroud and pin end
It is fixedly connected.
On this basis, the valve element has a cavity of depression, and the opening of cavity is towards sealing shroud；Omit in the external footpath of spool chamber
Less than sealing shroud cavity internal diameter, the gap setting between the valve element chamber outer wall and sealing shroud cavity inner wall has sealing ring；Institute
State and spring is installed between valve element cavity and sealing shroud cavity；The bottom of the valve element cavity is additionally provided with through hole, in the valve
Core bottom is provided with core handle back to the side of cavity.
On this basis, according to the technical solution of the utility model, when the pin end, female joint are connected, fluid is from public affairs
Joint flows to female joint, and the passage outside pin end sealing jacket wall and outside valve element cavity wall flows vertically, at valve element cavity bottom
Change flow direction at the outer edge in portion radially to flow, flowed vertically after reaching the core handle of valve element cavity, into female joint.
On this basis, the elastomeric material is rubber, and the sealing means are at least in the outer of step end face or valve element
Acies has elastomeric material；The elastomeric material uses pouring type.
On this basis, be provided with annular seal groove on the end face of the step, the sealed groove is embedded be cased with it is close
Packing.
On this basis, the outer wall or sealing shroud cavity inner wall of the valve element cavity are at least provided with annular seal ditch
Groove, the sealed groove is embedded to be cased with sealing ring：Annular seal groove can be set on the outer wall of valve element cavity, in ring-type
Sealed groove is nested with sealing ring；Annular seal groove can also be set in sealing shroud cavity inner wall, in annular seal groove
Nested sealing ring；Or annular seal groove is set in the outer wall or sealing shroud cavity inner wall of valve element cavity simultaneously, it is close in ring-type
Envelope groove is nested with sealing ring.Further, the shape sealed groove and nested sealing ring at least 1, in order to reach more preferable sealing
Effect, may also set up it is multiple-sealed, such as 2,3.
On this basis, as a kind of preferred embodiment of utility model, the bottom surface tool at the outer edge of the valve element
There is depressed area, and be in knife edge structure at bottom end rib, form sealed knife, the sealed knife closely connects with described sealing ring
Touch.
On this basis,
As a kind of optional embodiment of utility model, the female joint casing length is more than the length of pin end adapter
Degree, annular seal groove, the sealing ditch are provided with least on the inwall of female joint sleeve pipe or on the outer wall of pin end adapter
Groove is embedded to be cased with sealing ring：The sealed groove and sealing ring may be provided at internal surface of sleeve pipe or adapter outer wall, everywhere sealing ring
Groove 1 seals, and in order to strengthen sealing effectiveness, can be set multiple-sealed.
As another optional embodiment of utility model, the female joint internal surface of sleeve pipe has towards interface direction
Step, it is less than the length of pin end adapter to the length of sleeve port from the step, the internal diameter at the step is less than public access
The internal diameter of head adapter, the step end face are in close contact with adapter end face；At least in step end face and the contact surface or set of adapter
Elaxtic seal is provided between inside pipe wall and adapter outer wall：Sealing material can be set in step end face and the contact surface of adapter
Material, rubber washer is such as set；It can also set in sealed groove and sealing ring, can set between internal surface of sleeve pipe and adapter outer wall
Multiple-sealed circle.
On this basis, there is connecting pole, the connecting pole is with passing through gland and joint on the outside of the sealing shroud cavity bottom
Housing in being fixedly connected, the gland is cross-shaped configuration, and cross four ends are connected with joint housing, in cross
There is a circular through hole at the heart, the through hole is used for fixing seal set.
On this basis, sealing shroud has some through holes, the sealing shroud cavity port in the side wall of cavity port
Pass through elastomer seal with the step of pin end cavity.
On this basis, the pin end and the outside of adapter junction have a step, and the step end face is towards the mouth of pipe
Direction, and be in contact with the port surface of female joint sleeve pipe；At least in pin end outer steps end face or female joint sleeve port
Face forms the sphere ring structure of projection, and forms matched circular groove groove knot with the other end that sphere ring structure is in contact
Structure：The sphere ring structure of projection can be formed in pin end outer steps end face, and is formed therewith in female joint sleeve port face
Supporting circular groove slot structure；The sphere ring structure of projection can also be formed in female joint sleeve port face, and outside pin end
Step end face forms matched circular groove slot structure.
On this basis, the locking device can be screw thread, i.e., set lock by the outer wall in pin end and female joint
Tight set ring, locking collar inwall are threaded, and pin and box sub is locked by screw thread；The inwall in the locking collar can also be passed through
Annular groove and joint on elastic steel ball circle realize push-in locking；Latch hook and button can also be set respectively in pin and box sub
Ring, pin and box sub is locked by latch hook mode.
On this basis, have as utility model another preferred embodiment, the female joint inside in reverse
Arrangement, and with pin end internal structure and function identical valve element, sealing shroud, spring, gland part.
On this basis, the self-sealing joint is applied to Self-sealing valve field, especially using inflation field, is specifically for use in
SF6 air seals field.
On this basis, there are the core handle three mutually to set each two plate in the plate leaf of 120 angular distributions, the through hole
Valve element cavity bottom between leaf.
Compared with prior art, the beneficial effects of the utility model are：
1) coaxial-type self-sealing joint provided by the utility model, soft or hard dual-seal is used between the joint of male and female two：Inside
Portion carries out soft seal using elastomeric material, and outer face uses the hard sealing that metal material is formed.Good sealing effect, operating temperature
For -20 DEG C~100 DEG C, maximum working pressure can reach 0~25MPa.Under 25MPa operating pressure, slip is less than 10- 7mbar·L/s。
2) coaxial-type self-sealing joint provided by the utility model, using the Combination Design of valve element and sealing shroud, stream is changed
Fluid is changed to the radial pressure of side surface circumference, valve body axle to the pressure direction of valve element by body to the axial sectional pressure of valve element
To stress balance, regardless of shunt pressure and pressure difference factor, thus higher pressure can be born.
Brief description of the drawings
Fig. 1 is the pin end of coaxial-type self-sealing joint of the present utility model, female joint structural representation；
Fig. 2 is the structural representation after the pin end of coaxial-type self-sealing joint of the present utility model, female joint conducting；
Fig. 3, Fig. 4 are the valve core structure schematic diagrames in the utility model；
Fig. 5 is the sealing shroud structural representation in the utility model；
Fig. 6, Fig. 7 are the gland structural representations in the utility model.
Reference in figure：Female joint 1, female joint sleeve pipe 11, sphere ring structure 114, pin end 2, locking device 3；Connect
Pipe 21, valve element 22, sealing gasket 23, sealing ring 24, spring 25, sealing shroud 26, gland 27, pressure ring 28, valve core through hole 29, core handle
210th, the valve element edge of a knife 211, sealing shroud through hole 212, annular ditch groove 215, valve element outer wall annular seal groove 216.
Embodiment
Below in conjunction with drawings and examples, the utility model is further elaborated.It should be appreciated that this place is retouched
The specific embodiment stated only to explain the utility model, is not used to limit the utility model.
Embodiment 1
As shown in figure 1, a kind of coaxial-type self-sealing joint, including two the through-type pin ends 2 being mutually inserted, female joints 1,
Pin end 2, female joint 1 are connected with pipeline respectively；Pin end 2 has the adapter 21 of one section of protrusion, and female joint has and adapter pair
Supporting sleeve pipe 11 is answered, the internal diameter of sleeve pipe 11 is slightly larger than the external diameter of adapter 21, and both can realize socket, gap 1-3mm.Public access
First 2 inside has the valve element 22 of telescopic action, in axial direction has fluid passage between valve element 22 and public access casing 2, should
The circular passage that fluid passage is made up of the outer wall of valve element 22 and the inner walls of pin end 2.Pin end inner walls have
Step backwards to interface direction, being formed for the step can be a part for thickness of shell, can also pass through the past excurvation of housing
Folding is formed.The external diameter that pin end goes out at step is more than the internal diameter of adapter 21.
In order to realize that valve element 22 can be more than at pin end casing step with step end face contact sealing, the external diameter footpath of valve element 22
Internal diameter, and at the outer edge of valve element 22 between step by elastomer seal, the elastomeric material is rubber, by rubber
The mode for acting on valve element and step faying face has two kinds：A kind of is by the way of cast, i.e., on step end face or valve element
Outer edge at pour into a mould elastomeric material, at least ensure have one side is cast with elastomeric material；Another way is, on step end face
Groove is set, ring-shaped groove is so formed on the step end face inside pin end, it is then that Gask-O-Seal 23 is nested
In groove.
In addition, also having in pin end has sealing shroud 26, annular fluid is formed between its outer wall and pin end inner walls
The housing of passage, cavity of the sealing shroud 26 with depression, the opening direction adapter 21 of cavity, sealing shroud 26 and pin end 2 is in admittedly
Fixed connection.
Valve element 22 also has a cavity of depression, and the opening of cavity is towards sealing shroud 26, i.e. the opening of the cavity of valve element 22 and close
The opening direction of big envelope 26 it is relative, but the external footpath of spool chamber is slightly less than sealing shroud cavity internal diameter, to ensure that valve element 22 can be with
The axially retractable movement in the cavity of sealing shroud 26, what valve element 22 realized that telescopic moving leans on is the bullet being connected between two cavitys
Spring 25.In order to realize the sealing between two cavitys, prevent the fluid in pipeline from entering valve core inside, in the chamber outer wall of valve element 22 and
Gap between the cavity inner wall of sealing shroud 26 sealing is realized by elastic seal ring 24.The mode of sealing is：In the chamber of valve element 22
Annular seal groove 216 (as shown in Figure 3) is set on the outer wall of body, sealing ring 24 is nested with annular seal groove；Or
The cavity inner wall of sealing shroud 26 sets annular seal groove, and sealing ring is nested with annular seal groove.It is of course also possible to simultaneously
In the outer wall or sealing shroud cavity inner wall of valve element cavity, annular seal groove and sealing ring, but at least one group of sealed groove are set
And sealing ring, each group of sealing ring form one of seal line.In order to reach more preferable sealing effectiveness, multiple-sealed line can be set,
Such as 2,3 etc..
To ensure the pressure balance of 26 liang of inside cavities of valve element 22 and sealing shroud and axially outer, in the cavity of valve element 22
Bottom is additionally provided with through hole 29, and so, when valve element 22 is when with 26 relative motion of sealing shroud, two are enclosed in the stream of two inside cavities
Body can be flowed out with via through holes 29, ensure that the cavity internal and external pressure balance of valve element 22, be allowed to only need to overcome the bullet of spring 25 axially
Power, without shunt pressure and pressure difference factor must be considered.When two joints dock, even Fluid pressure is big again, it is not necessary to very big
Power valve element can be pushed open, so as to realize pin end, female joint fluid communication.
For convenience when two joints dock, valve element 22 is easily pushed open, is set in the bottom of valve element 22 back to the side of cavity
Core handle 210 is equipped with, the center of core handle 210 is an axle, and one end is welded at the outer side center of the cavity bottom of valve element 22, other end weldering
Top cap is connected to, there are some through holes in top cap.There are three on the central shaft in core handle 210 mutually in the plate leaf of 120 angular distributions
217 (as shown in Figure 4), the one end of plate leaf 217 are welded on the outside of the cavity bottom of valve element 22, and the other end is welded in top cap, top cap
External diameter be less than adapter 21 internal diameter, if dry lattice or through hole can also be set in top cap, be easy to fluid to circulate.Three are in mutually
On the one hand the plate leaf of 120 angular distributions plays strengthening core handle, on the other hand form fluid passage between every adjacent two plate leaf, institute
Three fluid passages are furnished with the surrounding centimetre of core handle 210.The distribution of the through hole 29 of the cavity bottom of valve element 22 just corresponds to three streams
Body passage.
Shaft type self-sealing joint provided by the utility model is effectively ensured close by the way of soft seal and hard sealing are combined
Sealing property.
For soft seal, soft seal is present between female joint sleeve pipe 11 and pin end adapter 21.Encapsulant uses bullet
Property material, such as elastomeric material.The filling position of soft sealing material can have two positions：A kind of situation is in the outer of adapter 21
Between the inwall of wall and sleeve pipe 11, in this case, the length of female joint sleeve pipe 11 is more than the length of pin end adapter 21, is covering
The inwall of pipe 11 sets annular seal groove, and embeds and be cased with sealing ring 113, or sets ring in the outer wall of pin end adapter
Shape sealed groove, and embed and be cased with sealing ring, everywhere sealing ring forms 1 sealing, in order to strengthen sealing effectiveness, can set
It is multiple-sealed.Another situation is that the inwall of female joint sleeve pipe 11 has the step towards interface direction, from step to sleeve port
Length be less than the length of pin end adapter, the internal diameter at step is less than the internal diameter of pin end adapter 21, and so, step end face is just
It can be in close contact with the end face of adapter 21, elaxtic seal, Ke Yidan then are set in step end face and the contact surface of adapter 21
Face is sealed, for example annular ditch groove is set on step end face, packing ring is set in groove, or pour into a mould rubber material in the port of adapter 21
Material, can also dual face seals, i.e., in step end face and the port of adapter 21 while elastomeric material is set；In addition, while also may be used
Between the inwall of sleeve pipe 11 and the outer wall of adapter 21 set sealed groove in and sealing ring, so form double-deck soft seal, sealing effectiveness
More preferably.
For hard sealing, hard sealing is present between the port interface and pin end of female joint sleeve pipe 11.This design knot
Structure, has step in pin end 2 and the junction of adapter 21, and step is located at the outside of pin end, step end face towards mouth of pipe direction,
When pin end, female joint are connected, the step end face is in contact with the port interface of female joint adapter 11.Hard sealing is just set
On this contact surface, the material sealed firmly is metal, and mechanism is integrated with adapter, suits to be formed by the shape of metal material
Sealing.That answers sealing structure is designed with two ways：Formed in pin end outer steps end face projection sphere ring structure, and
Female joint sleeve port face forms matched circular groove slot structure；Or as shown in figure 1, formed in female joint sleeve port face
Raised sphere ring structure 114, and matched circular groove slot structure 215 is formed in pin end outer steps end face.
In the present embodiment, in addition to said structure, also there is locking device 3 outside the pin end, female joint.Lock
Tight device can be screw thread, i.e., by setting the locking collar in the outer wall of pin end and female joint, locking collar inwall sets spiral shell
Line, pin and box sub is locked by screw thread；The elastic steel ball on the annular groove and joint of the inwall of the locking collar can also be passed through
Enclose to realize push-in locking；Latch hook and clasp can also be respectively set in pin and box sub, public affairs are locked by latch hook mode
Female joint.
In the present embodiment, fluid flows to female joint 1 from pin end 2, outside the wall of pin end sealing shroud 26 and the chamber of valve element 22
Passage outside body wall flows vertically, changes flow direction at the outer edge of valve element cavity bottom and radially flows, Ran Houyan
The core handle of valve element cavity is in axially flowing, into female joint.
Embodiment 2
With reference to shown in figure 1 and Fig. 2, a kind of coaxial-type self-sealing joint, including two through-type pin ends 2 being mutually inserted,
Female joint 1, and the portion such as sleeve pipe 11, adapter 21, valve element 22, sealing gasket 23, sealing ring 24, spring 25, sealing shroud 26, handle 210
Part, modular construction and function are same as Example 1.
Difference is, have in the present embodiment, inside female joint in it is reversely arranging and with pin end internal structure
With function identical valve element, sealing shroud, spring, gland part.This pin and box sub all structures with valve core device are more suitable
Close and be applied to the fluid transmission that leakage has greater environmental impacts.
In the present embodiment, in order to reach better seal effect, it is designed in the cavity outer bottom of public access head spool 22 recessed
Area is fallen into, the cocked bead of depressed area is distributed in the edge of cavity outer bottom, forms the valve element edge of a knife 211, the whole valve element edge of a knife 211
Just cavity outer bottom formed a ring in sealed knife, the sealed knife just with the annular ditch in common terminal interior step
Groove forms contact sealing.Female joint can also use same structure.
In the present embodiment, 26 1 comparison preferred embodiments of sealing shroud are, in sealing shroud 26 close to cavity port
Side wall on design some through holes 218 (as shown in Figure 5), to by fluid, and the cavity port of sealing shroud 26 directly with public affairs
Elastic seal ring 23 on the step of joint cavity forms Elastic Contact sealing.The external bottom of the mantle cavity of sealing shroud 26 has connection
Post, connecting pole is connected with the center of gland 27, and as shown in Fig. 6, Fig. 7, gland 27 is cross-shaped configuration, at cross center
There is a circular through hole, just the connecting pole with the outer bottom of sealing shroud 26 is socketed.There is screw thread in four cross end sections,
Coordinate with pin end inner walls screw thread.By turn gland 27, sealing shroud 26 can be promoted slowly to move, so that sealing shroud
26 and elastic seal ring 23 be in impaction state, reach sealing effectiveness.The left side of sealing shroud 26, which is pressed on sealing gasket 23, plays sealing work
With, and active force acts on spool end caused by isolation fluid pressure.The fixing seal set of gland 27 acts on, outside gland 27
Side also has pressure ring 28.
In the present embodiment, the valve element 22 as sealing key component, through being changed to the design of coaxial balancing pressure, makes valve element
Stress balance, it is no longer influenceed by Fluid pressure size.
Self-sealing joint provided by the utility model is applied to Self-sealing valve field, especially using inflation field, is specifically for use in
SF6 air seals field.
Using coaxial-type self-sealing joint provided by the utility model, soft or hard dual-seal is used between the joint of male and female two：
Inside carries out soft seal using elastomeric material, and outer face uses the hard sealing that metal material is formed.This sealing means, work temperature
Spend for -20 DEG C~100 DEG C, maximum working pressure can reach 0~25MPa.Good sealing effect：Under 25MPa operating pressure, let out
Leak rate is less than 10-7mbar·L/s。
Coaxial-type self-sealing joint provided by the utility model, using the Combination Design of valve element and sealing shroud, changes fluid
To the pressure direction of valve element, fluid is changed to the radial pressure of side surface circumference, valve body axial direction to the axial sectional pressure of valve element
Stress balance, regardless of shunt pressure and pressure difference factor.Higher pressure thus can be born.
Preferred embodiment of the present utility model has shown and described in described above, as previously described, it should be understood that this practicality is new
Type is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and available for various other groups
Conjunction, modification and environment, and above-mentioned teaching or the technology of association area can be passed through in utility model contemplated scope described herein
Or knowledge is modified.And the change and change that those skilled in the art are carried out do not depart from spirit and scope of the present utility model, then
All should be in the protection domain of the appended claims for the utility model.
Claims (10)
- A kind of 1. coaxial-type self-sealing joint, it is characterised in that：Including two the through-type pin ends being mutually inserted, female joints, institute State pin end, female joint is connected with pipeline respectively；The pin end has the adapter of one section of protrusion, and the female joint has with connecing Sleeve pipe corresponding to pipe, its internal diameter and can be taken over slightly larger than the external diameter of adapter and realize socket；Have inside the pin end scalable The valve element of activity, in axial direction there is fluid passage between valve element and the public access casing；The pin end inner walls tool Have a step backwards to interface direction, the diameter of the valve element is more than the internal diameter at casing step, at the outer edge of the valve element with Pass through elastomer seal between the step；Pass through elastomer seal between described sleeve pipe and the adapter；The public access Also there is locking device outside head, female joint；Also having in the pin end has sealing shroud, its outer wall and pin end inner walls Between have a fluid passage, the sealing shroud has a cavity of depression, and the opening of cavity is towards adapter, the sealing shroud and pin end Housing be fixedly connected.
- 2. coaxial-type self-sealing joint according to claim 1, it is characterised in that：The valve element has the cavity of depression, chamber The opening of body is towards sealing shroud；The external footpath of spool chamber is slightly less than footpath in envelope cavity body, the valve element chamber outer wall and big envelope cavity Gap setting between inwall has sealing ring；Spring is installed between the valve element cavity and sealing shroud cavity；The spool chamber The bottom of body is additionally provided with through hole, and the side of cavity is provided with core handle in the valve element bottom.
- 3. coaxial-type self-sealing joint according to claim 1 or 2, it is characterised in that：The pin end, female joint are connected When, fluid flows to female joint from pin end, and the passage outside pin end sealing jacket wall and outside valve element cavity wall flows vertically, Change flow direction at the outer edge of valve element cavity bottom radially to flow, in axially after the core handle of the external bottom of arrival spool chamber Flowing, into female joint；Before and after the fluid communication, valve element axial direction stress balance, do not influenceed by Fluid pressure size.
- 4. coaxial-type self-sealing joint according to claim 1, it is characterised in that：The elastomeric material is rubber, described close Envelope mode is at least to have elastomeric material in the outer edge of step end face or valve element；Or that ring-type is provided with step end face is close Groove is sealed, the sealed groove is embedded to be cased with sealing gasket.
- 5. coaxial-type self-sealing joint according to claim 3, it is characterised in that：At least the valve element cavity outer wall or Sealing shroud cavity inner wall is provided with annular seal groove, and the sealed groove is embedded to be cased with sealing ring.
- 6. coaxial-type self-sealing joint according to claim 5, it is characterised in that：Bottom surface tool at the outer edge of the valve element There is depressed area, and be in knife edge structure at bottom end rib, form sealed knife, the sealed knife is realized and sealed by spring force Circle is in close contact.
- 7. coaxial-type self-sealing joint according to claim 1, it is characterised in that：The female joint casing length is more than public access The length of head adapter, annular seal groove is provided with least on the inwall of female joint sleeve pipe or on the outer wall of pin end adapter, The sealed groove is embedded to be cased with sealing ring.
- 8. coaxial-type self-sealing joint according to claim 1, it is characterised in that：The female joint internal surface of sleeve pipe has direction The step in interface direction, it is less than the length of pin end adapter to the length of sleeve port from the step, it is interior at the step Footpath is less than the internal diameter of pin end adapter, end face and the adapter end contact of the step；At least connecing in step end face and adapter In contacting surface or internal surface of sleeve pipe elaxtic seal is provided between adapter outer wall.
- 9. coaxial-type self-sealing joint according to claim 2, it is characterised in that：Sealing shroud is in the side wall of cavity port With some through holes, the sealing shroud cavity port and the step of pin end cavity pass through elastomer seal；The sealing shroud There is connecting pole, for the connecting pole with the housing of joint being in be fixedly connected by gland, the gland is ten on the outside of cavity bottom Font structure, cross four ends are connected with joint housing, there is a circular through hole at cross center, and the through hole is used Carry out fixing seal set.
- 10. according to the coaxial-type self-sealing joint described in claim any one of 4-9, it is characterised in that：The pin end and adapter The outside of junction has step, and step end face is in contact towards the direction of the mouth of pipe, and with the port surface of female joint sleeve pipe；At least The sphere ring structure of projection is formed in pin end outer steps end face or female joint sleeve port face, and is connected with sphere ring structure Tactile other end forms matched circular groove slot structure.
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| CN201720747741.5U CN207018695U (en) | 2017-06-26 | 2017-06-26 | A kind of coaxial-type self-sealing joint |
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|---|---|---|---|
| CN201720747741.5U CN207018695U (en) | 2017-06-26 | 2017-06-26 | A kind of coaxial-type self-sealing joint |
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| CN207018695U true CN207018695U (en) | 2018-02-16 |
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| CN201720747741.5U Active CN207018695U (en) | 2017-06-26 | 2017-06-26 | A kind of coaxial-type self-sealing joint |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152575A (en) * | 2017-06-26 | 2017-09-12 | 南通虹登机械设备有限公司 | A kind of coaxial-type self-sealing joint |
| CN109630781A (en) * | 2018-11-19 | 2019-04-16 | 唐波 | A kind of environment-friendly antirust pipe fitting for building |
| CN111288239A (en) * | 2020-03-31 | 2020-06-16 | 宁波奥克斯电气股份有限公司 | Pipe joint assembly and air conditioner |
| CN113217731A (en) * | 2020-12-03 | 2021-08-06 | 咏晟科技股份有限公司 | Fluid connector |
| CN114992401A (en) * | 2022-05-20 | 2022-09-02 | 中航光电科技股份有限公司 | Fluid connector capable of being operated under large pressure difference and socket thereof |
-
2017
- 2017-06-26 CN CN201720747741.5U patent/CN207018695U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152575A (en) * | 2017-06-26 | 2017-09-12 | 南通虹登机械设备有限公司 | A kind of coaxial-type self-sealing joint |
| CN109630781A (en) * | 2018-11-19 | 2019-04-16 | 唐波 | A kind of environment-friendly antirust pipe fitting for building |
| CN111288239A (en) * | 2020-03-31 | 2020-06-16 | 宁波奥克斯电气股份有限公司 | Pipe joint assembly and air conditioner |
| CN113217731A (en) * | 2020-12-03 | 2021-08-06 | 咏晟科技股份有限公司 | Fluid connector |
| CN114992401A (en) * | 2022-05-20 | 2022-09-02 | 中航光电科技股份有限公司 | Fluid connector capable of being operated under large pressure difference and socket thereof |
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