CN104847995B - A kind of high pressure sealing three-way device realizing fast insert-pull docking - Google Patents
A kind of high pressure sealing three-way device realizing fast insert-pull docking Download PDFInfo
- Publication number
- CN104847995B CN104847995B CN201510247793.1A CN201510247793A CN104847995B CN 104847995 B CN104847995 B CN 104847995B CN 201510247793 A CN201510247793 A CN 201510247793A CN 104847995 B CN104847995 B CN 104847995B
- Authority
- CN
- China
- Prior art keywords
- cavity
- sealing
- pull
- entrance
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
A kind of high pressure sealing three-way device realizing fast insert-pull docking, it comprises: threeway main body, and it comprises valve body, is provided with the first cavity, buffering cavity and the second cavity in described valve body；Sealing plug-in and pull-off device, it is connected with described threeway main body, and ambient pressure is entered in the second cavity by this sealing plug-in and pull-off device；One-way sealing assembly, it is located in described cushion chamber body；Two way seal assembly, it is located in the first described cavity.Its advantage is: in addition to having general tee-joint function, also achieves the rapid abutting joint plug under special environment condition.
Description
Technical field
The present invention relates to high pressure sealing field, be specifically related to the three-way device of a kind of fast insert-pull docking.
Background technology
Nowadays, in high pressure sealing field, generally require such a three-way device: have only to two under normal operation and lead to
Just disclosure satisfy that demand, but under particular/special requirement (such as, under conditions of having quickly startup, fast-refrigerating requirement, equipment or load
Body itself can not meet rapidity requirement owing to volume, weight etc. limit the pressure provided), need ground or extraneous offer more
High pressure is to meet rapidity requirement, after once reaching rapidity requirement, withdraws from ambient pressure, and normal work continues by setting
On standby or carrier two lead to maintain, though traditional various technology maturation of triple valve product category, it can only realize simply
Pipeline tee-joint function, it is impossible to meet use demand under these conditions.
Accordingly, it is desirable to provide a kind of high pressure sealing three-way device realizing fast insert-pull docking, and it is ensured that at high pressure
In the case of docking time external plug-in and pull-off device will not be extruded by high pressure.
Summary of the invention
It is an object of the invention to provide a kind of high pressure sealing three-way device realizing fast insert-pull docking, it is capable of
Threeway and the rapid abutting joint of extrapolation means under the conditions of high pressure sealing.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
A kind of high pressure sealing three-way device realizing fast insert-pull docking, is characterized in that, comprise:
Threeway main body, it comprises valve body, is provided with the first cavity, the second cavity in described valve body；Described valve body is provided with
The first entrance of connecting with described first cavity, outlet；Connected by the second entrance between the second described cavity and the first cavity；
Sealing plug-in and pull-off device, it is connected with described threeway main body, and ambient pressure is entered into by this sealing plug-in and pull-off device
In second cavity；
Two way seal assembly, it is located in the first described cavity, and its one end is connected with the internal face of described first cavity,
And formation seals to seal the pressure from the first described entrance in junction, its other end and the inwall of described first cavity
Face connects, and forms sealing in junction to seal the pressure from the second described entrance；The external world in the second cavity
Pressure in pressure and the first entrance is applied to the two ends of this two way seal assembly respectively, and one end that stress is bigger is open, pressure
Power enters the first cavity from the entrance corresponding to this one end.
The above-mentioned high pressure sealing three-way device realizing fast insert-pull docking, wherein:
It is additionally provided with buffering cavity between the second described entrance and the first cavity, logical between this buffering cavity and second cavity
Cross the second entrance connection, connected by the 3rd entrance between this buffering cavity and first cavity；
One-way sealing assembly, it is located in described cushion chamber body, and its one end is connected with the internal face of described buffering cavity,
And form sealing in junction to seal the second described entrance；In the second cavity, it is passed through ambient pressure makes this pressure effect
To one end of described one-way sealing assembly, this one end is open, and ambient pressure enters into buffering cavity from the second entrance.
The above-mentioned high pressure sealing three-way device realizing fast insert-pull docking, wherein, described sealing plug-in and pull-off device comprises:
First rubber gasket, it is connected with the internal face of described second cavity, and junction is formed and seals, this first rubber
The second pilot hole it is provided with in sealing gasket；
Locking nut, its second cavity described in connection, for compressing the first described rubber gasket and making first
Rubber gasket and the second cavity fit tightly in junction；Flat recess, the circle being sequentially communicated it is provided with in described locking nut
Cylindrical cavity and the first pilot hole；
Plug-pull tube, is provided with the word wedge that the flat recess with described locking nut mates outside it；Described plug-pull tube inserts
First pilot hole of described locking nut and the second pilot hole of the first rubber gasket, a word wedge of plug-pull tube is through locking
Coordinate fixing after the flat recess of nut with cylindrical cavity；Being provided with through hole in this plug-pull tube, ambient pressure is entered by this through hole
Second cavity.
The above-mentioned high pressure sealing three-way device realizing fast insert-pull docking, wherein, described two way seal assembly comprises:
Second rubber gasket, its one end is connected with the internal face of described first cavity, for sealing from described the
The pressure of one entrance；
3rd rubber gasket；Its one end is connected with the internal face of described first cavity, for sealing from described the
The pressure of two entrances；
First spring, its one end connects the other end of described second rubber gasket, and its other end connects described 3rd rubber
The other end of glue sealing gasket.
The above-mentioned high pressure sealing three-way device realizing fast insert-pull docking, wherein, described one-way sealing assembly comprises:
4th rubber gasket, its one end is connected with the internal face of described buffering cavity, for sealing from described the
The pressure of two entrances；
Second spring, its one end connects the internal face of described buffering cavity, and its other end connects described 4th rubber seal
The other end of pad.
The above-mentioned high pressure sealing three-way device realizing fast insert-pull docking, wherein: described first rubber gasket and the
Conical surface sealing structure is used between two cavitys；The conical surface of described first rubber gasket is higher than the conical surface of described second cavity.
The above-mentioned high pressure sealing three-way device realizing fast insert-pull docking, wherein: the two ends of described two way seal assembly
And it is respectively adopted conical surface sealing structure between the first cavity.
The above-mentioned high pressure sealing three-way device realizing fast insert-pull docking, wherein: one end of described one-way sealing assembly
And use conical surface sealing structure between described buffering cavity.
The present invention compared with prior art has the advantage that
1, in addition to there is general tee-joint function, the rapid abutting joint plug under special environment condition is also achieved；
2, the docking of its fast insert-pull is easy to operate, reliably, and good seal performance；
3, rubber gasket and the cavity of particular design is able to ensure that sealing reliably, and the biggest sealing effectiveness of pressure is the best；
4, simple in construction, it is easy to accomplish, corresponding change in design can be carried out according to desirable pressure and assembling needs.
Accompanying drawing explanation
Fig. 1 is the stereochemical structure sectional view of the present invention；
Fig. 2 is the perspective view of the locking nut of the present invention；
Fig. 3 is the perspective view of the plug-pull tube of the present invention；
Fig. 4 is that embodiments of the invention use state reference map；
Fig. 5 is that embodiments of the invention use state reference map.
Detailed description of the invention
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
Realizing, as it is shown in figure 1, a kind of, the high pressure sealing three-way device that fast insert-pull docks, it comprises: threeway main body, its bag
Containing valve body 1, in described valve body 1, it is provided with first cavity the 11, second cavity 12；Described valve body 1 is provided with and described first cavity
First entrance 111 of 11 connections, outlet 112, i.e. two in threeway are led to；Pass through between the second described cavity 12 and the first cavity 11
Second entrance 121 connects；Sealing plug-in and pull-off device, it is connected with described threeway main body, and ambient pressure is by this sealing plug dress
Put and enter in the second cavity 12；Two way seal assembly, it is located in the first described cavity 11, its one end and described first chamber
The internal face of body 11 connects, and forms sealing in junction to seal the pressure from the first described entrance 111, its other end
It is connected with the internal face of described first cavity 11, and forms sealing in junction to seal from the second described entrance 121
Pressure；This two way seal assembly it is applied to respectively from the pressure in the ambient pressure in the second cavity 12 and the first entrance 111
Two ends, one end that stress is bigger is open, and pressure enters the first cavity 11 from the entrance corresponding to this one end.
For improving sealing further, between described the second entrance 121 and the first cavity 11, it is additionally provided with buffering cavity
13, connected by the second entrance 121 between this buffering cavity 13 with the second cavity 12, logical between this buffering cavity 13 and first cavity 11
Cross the 3rd entrance 131 to connect；One-way sealing assembly, it is located in described buffering cavity 13, its one end and described buffering cavity
The internal face of 13 connects, and forms sealing in junction to seal the second described entrance 121；Outside being passed through in the second cavity 12
Boundary's pressure makes this pressure be applied to one end of described one-way sealing assembly, and this one end is open, and ambient pressure is from the second entrance
121 enter into buffering cavity 13.
As shown in Figure 1,2,3, 4, in order to realize the fast insert-pull under high pressure sealing, described sealing plug-in and pull-off device comprises:
First rubber gasket 21, it is connected with the internal face of described second cavity 12, and junction is formed and seals, this first rubber seal
It is provided with the second pilot hole 211 in pad 21；Locking nut 3, its second cavity 12 described in connection, in the present embodiment, described lock
Jack panel 3 is threaded connection and is fixed in threeway main body, for compressing the first described rubber gasket 21 and making first
Rubber gasket 21 fits tightly in junction with the second cavity 12；The word being sequentially communicated it is provided with in described locking nut 3
Groove 33, cylindrical cavity 32 and the first pilot hole 31；Plug-pull tube 4, is provided with outside it and the flat recess 33 of described locking nut 3
One word wedge 41 of coupling；Described plug-pull tube 4 inserts the first pilot hole 31 and the first rubber gasket of described locking nut 3
Second pilot hole 211 of 21, a word wedge 41 of plug-pull tube 4 is joined with cylindrical cavity 32 after the flat recess 33 of locking nut 3
Closing fixing, during assembling, flat recess 33 enters 90-degree rotation after circular cavity 32, i.e. can ensure that plug-pull tube 4 will not be by high-pressure fluid
Go out；Being provided with through hole 42 in this plug-pull tube 4, ambient pressure enters the second cavity 12 by this through hole 42.
Described two way seal assembly comprises: the second rubber gasket 22, its one end and the inwall of described first cavity 11
Face connects, for sealing the pressure from the first described entrance 111；3rd rubber gasket 23；Its one end and described first
The internal face of cavity 11 connects, for sealing the pressure from the second described entrance 121；First spring 51, its one end connects
The other end of described second rubber gasket 22, its other end connects the other end of described 3rd rubber gasket 23；First bullet
The elastic force of spring 51 can ensure that in the case of without ambient pressure sealing gasket preferably seals with cavity inner wall face and coordinates.
Described one-way sealing assembly comprises: the 4th rubber gasket 24, its one end and the inwall of described buffering cavity 13
Face connects, for sealing the pressure from the second described entrance 121；Second spring 52, its one end connects described buffering cavity
The internal face of 13, its other end connects the other end of described 4th rubber gasket 24；The elastic force of the second spring 52 can ensure that
Preferably seal with cavity inner wall face without sealing gasket in the case of ambient pressure and coordinate.
Conical surface sealing structure is used between described first rubber gasket 21 and the second cavity 12；Described first rubber seal
The conical surface of pad 21 is higher than the conical surface of described second cavity 12；Owing to plug-pull tube 4 coordinates the outer wall at place with the first rubber gasket 21
Relative smooth, when coordinating with the inwall of the first rubber gasket 21 by easier gas leakage, by the cone of the first rubber gasket 21
After face is designed into the conical surface higher than the second cavity 12, high-pressure fluid is once applied to the tapered portion exceeded, and will make the first rubber
What in rubber cushion 21, the inwall of the second pilot hole 211 and the outer wall of plug-pull tube 4 were fitted is more tight, improves further and seals reliably
Property.
It is respectively adopted conical surface sealing structure between two ends and first cavity 11 of described two way seal assembly；Described one-way sealing
Conical surface sealing structure is used between one end and the described buffering cavity 13 of sealing assembly.
As shown in Figure 4, it is the present invention in the case of relying on pressure itself, two logical use state reference when playing a role
Figure, now, the second rubber gasket 22 at the first entrance 111 is pushed open by equipment pressure itself, and by outlet 112 outflow；
When needs extraneous offer higher pressure, the operation principle of the present invention refer to shown in Fig. 5, by plug-pull tube 4 from locking nut 3 He
The pilot hole of the first rubber gasket 21 inserts, and word wedge 41 90-degree rotation and cylindrical cavity 32 is locked, now
Extraneous high-pressure fluid is passed through the through hole 42 of plug-pull tube 4, and high-pressure fluid will quickly fill with the second cavity 12, due to the second cavity 12
In high-pressure fluid will act on the tapered portion that the first rubber gasket exceeds, it is ensured that after docking, Fluid Sealing is not revealed；With
This simultaneously, high-pressure fluid is pushed the most rapidly the 4th rubber gasket 24 and the 3rd rubber gasket 23 open and enters the first cavity
Finally from outlet 112 inflow workspace, now, under the double action of the first spring 51 and high-pressure fluid, the second rubber in 11
It is more tight that first entrance 111 is sealed by sealing ring 22；When external world's high pressure is withdrawn from by needs, it is only necessary to the pressure of equipment self
During work, by plug-pull tube 4 90-degree rotation, a word wedge 41 of plug-pull tube 4 and flat recess 32 alignment is made to extract, then ambient pressure disappears
Losing, the pressure on equipment continues through the first entrance 111 and pushes and enter the second rubber gasket 22 open first cavity 11 and complete
Work.
The present invention can need according to assembling and operating pressure needs be designed amendment, such as increases multiple described the
One cavity the 11, second cavity 12 and buffering cavity 13, and rubber gasket and the spring of correspondence is set in cavity, to be formed
Multi-stage sealed, improve its dependability further；Can also be by strengthening intensity and the bonding strength, such as material of self structure
Material and thickness etc., to meet the need of work under ultra-high voltage environment.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. the high pressure sealing three-way device realizing fast insert-pull docking, it is characterised in that comprise:
Threeway main body, it comprises valve body (1), is provided with the first cavity (11), the second cavity (12) in described valve body (1)；Described
Valve body (1) is provided with the first entrance (111), the outlet (112) connected with described first cavity (11)；The second described cavity
(12) connected by the second entrance (121) with between the first cavity (11)；
Sealing plug-in and pull-off device, it is connected with described threeway main body, and ambient pressure enters into second by this sealing plug-in and pull-off device
In cavity (12)；
Two way seal assembly, it is interior that it is located at described the first cavity (11), its one end and the internal face of described first cavity (11)
Connect, and form sealing in junction to seal the pressure from described the first entrance (111), its other end and described first
The internal face of cavity (11) connects, and forms sealing in junction to seal the pressure from described the second entrance (121)；Come
Ambient pressure in the second cavity (12) and the pressure in the first entrance (111) are applied to the two of this two way seal assembly respectively
End, one end that stress is bigger is open, and pressure enters the first cavity (11) from the entrance corresponding to this one end；
Buffering cavity (13), this buffering cavity (13) it is additionally provided with between described the second entrance (121) and the first cavity (11)
Connected by the second entrance (121) with between the second cavity (12), by the 3rd between this buffering cavity (13) and first cavity (11)
Entrance (131) connects；
One-way sealing assembly, it is interior that it is located at described buffering cavity (13), its one end and the internal face of described buffering cavity (13)
Connect, and form sealing in junction to seal described the second entrance (121)；It is passed through ambient pressure in the second cavity (12)
Making this pressure be applied to one end of described one-way sealing assembly, this one end is open, and ambient pressure enters from the second entrance (121)
Enter to buffering cavity (13).
Realize the high pressure sealing three-way device of fast insert-pull docking the most as claimed in claim 1, it is characterised in that described is close
Envelope plug-in and pull-off device comprises:
First rubber gasket (21), it is connected with the internal face of described second cavity (12), and junction is formed and seals, and this is first years old
The second pilot hole (211) it is provided with in rubber gasket (21)；
Locking nut (3), its second cavity (12) described in connection, for compressing described the first rubber gasket (21) and making
Obtain the first rubber gasket (21) to fit tightly in junction with the second cavity (12)；It is provided with in described locking nut (3) and depends on
The flat recess (33) of secondary connection, cylindrical cavity (32) and the first pilot hole (31)；
Plug-pull tube (4), is provided with the word wedge (41) that the flat recess (33) with described locking nut (3) mates outside it；Described
Plug-pull tube (4) inserts first pilot hole (31) of described locking nut (3) and the second guiding of the first rubber gasket (21)
Hole (211), a word wedge (41) of plug-pull tube (4) is joined with cylindrical cavity (32) afterwards through the flat recess (33) of locking nut (3)
Close fixing；Being provided with through hole (42) in this plug-pull tube (4), ambient pressure enters the second cavity (12) by this through hole (42).
Realize the high pressure sealing three-way device of fast insert-pull docking the most as claimed in claim 1, it is characterised in that described is double
Comprise to black box:
Second rubber gasket (22), its one end is connected with the internal face of described first cavity (11), is used for sealing from described
The pressure of the first entrance (111)；
3rd rubber gasket (23)；Its one end is connected with the internal face of described first cavity (11), is used for sealing from described
The pressure of the second entrance (121)；
First spring (51), its one end connects the other end of described second rubber gasket (22), and its other end connects described the
The other end of three rubber gaskets (23).
Realize the high pressure sealing three-way device of fast insert-pull docking the most as claimed in claim 2, it is characterised in that described list
Comprise to black box:
4th rubber gasket (24), its one end is connected with the internal face of described buffering cavity (13), is used for sealing from described
The pressure of the second entrance (121)；
Second spring (52), its one end connects the internal face of described buffering cavity (13), and its other end connects described 4th rubber
The other end of sealing gasket (24).
Realize the high pressure sealing three-way device of fast insert-pull docking the most as claimed in claim 2, it is characterised in that: described first
Conical surface sealing structure is used between rubber gasket (21) and the second cavity (12)；The conical surface of described first rubber gasket (21)
The conical surface higher than described second cavity (12).
6. the high pressure sealing three-way device realizing fast insert-pull docking as described in any one in claim 1 ~ 4, its feature
It is: between two ends and first cavity (11) of described two way seal assembly, be respectively adopted conical surface sealing structure.
Realize the high pressure sealing three-way device of fast insert-pull docking the most as claimed in claim 2, it is characterised in that: described unidirectional
Conical surface sealing structure is used between one end and the described buffering cavity (13) of black box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247793.1A CN104847995B (en) | 2015-05-15 | 2015-05-15 | A kind of high pressure sealing three-way device realizing fast insert-pull docking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510247793.1A CN104847995B (en) | 2015-05-15 | 2015-05-15 | A kind of high pressure sealing three-way device realizing fast insert-pull docking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104847995A CN104847995A (en) | 2015-08-19 |
| CN104847995B true CN104847995B (en) | 2016-08-31 |
Family
ID=53847854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510247793.1A Active CN104847995B (en) | 2015-05-15 | 2015-05-15 | A kind of high pressure sealing three-way device realizing fast insert-pull docking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104847995B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533430A (en) * | 1969-01-01 | 1970-01-01 | Otis Eng Corp | Shuttle valve |
| US6257268B1 (en) * | 1999-12-01 | 2001-07-10 | Gilmore Valve Company | Pressure biased shuttle valve |
| CN201301988Y (en) * | 2008-11-25 | 2009-09-02 | 东莞市格瑞机械有限公司 | Three-way bidirectional check valve |
| CN102003424A (en) * | 2009-09-02 | 2011-04-06 | 捷锐企业(上海)有限公司 | Double-gas source airflow switching valve and control box and gas supply system |
-
2015
- 2015-05-15 CN CN201510247793.1A patent/CN104847995B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3533430A (en) * | 1969-01-01 | 1970-01-01 | Otis Eng Corp | Shuttle valve |
| US6257268B1 (en) * | 1999-12-01 | 2001-07-10 | Gilmore Valve Company | Pressure biased shuttle valve |
| CN201301988Y (en) * | 2008-11-25 | 2009-09-02 | 东莞市格瑞机械有限公司 | Three-way bidirectional check valve |
| CN102003424A (en) * | 2009-09-02 | 2011-04-06 | 捷锐企业(上海)有限公司 | Double-gas source airflow switching valve and control box and gas supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104847995A (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW201411020A (en) | Sealing material, pressing ring, coupling, and valve | |
| CN106931260A (en) | A kind of pressure piping snap joint | |
| CN107152575A (en) | A kind of coaxial-type self-sealing joint | |
| CN206669186U (en) | A kind of pressure piping snap joint | |
| CN108625815B (en) | Filling type external pipe packer | |
| WO2020015350A1 (en) | Charging valve, air conditioning system and electric vehicle | |
| CN102777642A (en) | Nose seal for surge relief valves | |
| CN204042273U (en) | A kind of rapid pipe joint | |
| CN108561648A (en) | Pipe joint | |
| CN208311717U (en) | Multi-sealed flange assembly | |
| CN103470886B (en) | The pipeline clamp connected system of single groove double card structure | |
| CN104847995B (en) | A kind of high pressure sealing three-way device realizing fast insert-pull docking | |
| CN206530312U (en) | A kind of inflatable packer | |
| CN107061902B (en) | A kind of anti-pulling flexible tube interface | |
| CN108374915A (en) | A kind of automatic locking type charge valve | |
| CN206246088U (en) | It is a kind of can deblocking with pressure inflatable packer | |
| CN201925538U (en) | Oxygen valve | |
| CN204829047U (en) | Glue connection with expandable sealing circle | |
| CN209164828U (en) | A kind of dish tubular type membrane component | |
| CN205578960U (en) | Male joint with wiper seal structure | |
| CN208010989U (en) | A kind of automatic locking type charge valve | |
| CN206592610U (en) | Manual movable joint safety valve | |
| CN205806760U (en) | A kind of new work engine quick connector | |
| CN207315174U (en) | Interior gas-flow closure adhesive tape | |
| CN220247412U (en) | Vertical pipeline sedimentation compensation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |