CN205350424U - High pressure ultra -low temperature upper assembling type ball valve composite seal disk seat - Google Patents
High pressure ultra -low temperature upper assembling type ball valve composite seal disk seat Download PDFInfo
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- CN205350424U CN205350424U CN201521075434.4U CN201521075434U CN205350424U CN 205350424 U CN205350424 U CN 205350424U CN 201521075434 U CN201521075434 U CN 201521075434U CN 205350424 U CN205350424 U CN 205350424U
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Abstract
The utility model discloses a high pressure ultra -low temperature upper assembling type ball valve composite seal disk seat, this ball valve composite seal disk seat include the sealed adoption lip seal circle of valve head -end composite seal disk seat and valve low reaches end composite seal disk seat, valve head -end composite seal disk seat and valve low reaches end composite seal disk seat and upper assembling type valve body. The utility model has the advantages that in the medium -term and long -term stable work of ultra -low temperature medium, it does not have any internal leakage at the ultra -low temperature medium to guarantee.
Description
Technical field
This utility model relates to a kind of combination sealing valve seat, particularly to a kind of high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat.
Background technology
The combination sealing valve seat of room temperature ball valve can realize two kinds of functions, and Applicable temperature is-29 DEG C～+150 DEG C.One is double; two cut-off and (Doubleblockandbleed) function of releasing, as it is shown in figure 1, include spheroid 1, opening ring for fixing 2, room temperature valve seat insert 3, seat ring 4, spring 5, fire-protection ring 6, "O"-ring back-up ring 7, "O"-ring I8, "O"-ring II9 and valve body 10.This function can make the upstream extremity of valve and downstream seal simultaneously, to the relatively low upstream extremity of pressure or downstream discharge during cavity superpressure.Another kind is double; two isolation and (Doubleisolationandbleed) function of releasing, as shown in Figure 2.Including spheroid 1, opening ring for fixing 2, room temperature valve seat insert 3, seat ring 4, spring 5, fire-protection ring 6, "O"-ring back-up ring 7, "O"-ring I8, "O"-ring II9, valve body 10.The difference maximum with the room temperature ball valve of drainage function combination seal valve seat with double; two cut-offs is that "O"-ring I8 two ends are respectively mounted "O"-ring back-up ring 7, it is achieved "O"-ring I8 all will not clamp-on in seat ring 4 cylindrical and valve body 10 fit clearance in two sealing directions under the effect of high-pressure medium.This function can make the upstream extremity of valve and downstream seal simultaneously, but cavity must be provided with pressure-relieving device, to ensure that chamber pressure is released from pressure-relieving device when exceeding 1.33 times of design pressure.
LNG is cooled to-162 DEG C by the natural gas of gaseous state at ambient pressure, so as to condense into liquid.Needing in gas deliquescence process to adopt substantial amounts of high-pressure ultra-low temperature upper-mounting type ball valve, the combination sealing valve seat of the room temperature ball valve of above two function all can not meet working condition requirement, and existing problems are as follows respectively:
There are three problems in the room temperature ball valve combination sealing valve of double; two cut-offs and drainage function: one when being cavity superpressure to the relatively low upstream extremity of pressure or downstream discharge, this mode of releasing has danger, particularly during the maintenance of valve downstream end, it is easy to maintainer and equipment are caused damage.Two is that room temperature valve seat insert is not suitable for ultralow-temperature operation conditions, and valve leak is very big.Three is at normal temperatures, and the sealing of seat ring and valve body adopts rubber "O"-ring, and in ultralow temperature medium, rubber easily embrittlement cannot seal.
The room temperature ball valve combination sealing valve of double; two isolation and drainage function equally exists three problems: one is that cavity must be provided with pressure-relieving device, adds the leakage point of valve body.Two is that room temperature valve seat insert is not suitable for ultralow-temperature operation conditions, and valve leak is very big.Three is at normal temperatures, and the sealing of seat ring and valve body adopts rubber "O"-ring, and in ultralow temperature medium, rubber easily embrittlement cannot seal.
Utility model content
Technical problem to be solved in the utility model is to provide for a kind of suitable in ultralow-temperature operation conditions, the high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat of favorable sealing property.
In order to solve above technical problem, this utility model provides a kind of high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat, this ball valve combination seal valve seat includes the sealing employing lip seal circle of valve downstream end combination sealing valve seat and valve downstream end combination sealing valve seat, valve downstream end combination sealing valve seat and valve downstream end combination sealing valve seat and upper dress formula valve body.
Described valve downstream end combination sealing valve seat, including expansion controlling ring-shaped insert, stop pin, single C type lip seal circle, lip seal circle back-up ring, ultra-low temperature valves seat ring, ultralow temperature valve base sealing ring, valve seat snap ring, anti-rotation baffle plate, butterfly spring, pressure ring and ultralow temperature fire-protection ring；Described single C type lip seal circle is arranged on the cylindrical of dress formula valve body inner bore and ultra-low temperature valves seat ring, single C type lip is towards valve downstream end, after single C type lip seal circle, lip seal circle back-up ring is set, ultralow temperature valve base sealing ring is by external force press-in ultra-low temperature valves race shape seal groove, ultra-low temperature valves seat ring cylindrical is provided with screw thread, and rotary valve base snap ring dress makes ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring be close to or recess ultralow temperature spheroid.
The chuck embedded metal energy-storaging spring that described single C type lip seal circle is polymeric material is constituted.
Described single C type lip seal circle is arranged on the cylindrical of dress formula valve body inner bore and ultra-low temperature valves seat ring, and embedded metal energy storage spring is in compressive state, the sealing lip of chuck can be forced to be close to and need sealing surfaces, provides and seal required section lotus when without pressure medium.When there being pressure medium, pressure medium puts on the sealing lip of chuck and realizes sealing, and pressure is more high, and sealing property is more good, any deformation of chuck or abrasion, is recompensed by embedded metal energy storage spring.During high pressure operating mode, the lip seal circle back-up ring arranged after single C type lip seal circle, it is prevented that damage single C type lip seal circle under high pressure.
Described valve downstream end combination sealing valve seat, including expansion controlling ring-shaped insert, stop pin, ultra-low temperature valves seat ring, ultralow temperature valve base sealing ring, valve seat snap ring, anti-rotation baffle plate, butterfly spring, pressure ring, ultralow temperature fire-protection ring and double C-type lip seal circle；Described double C-type lip seal circle is arranged on the cylindrical of dress formula valve body inner bore and ultra-low temperature valves seat ring, double C-type lip is towards valve downstream end, ultralow temperature valve base sealing ring is by external force press-in ultra-low temperature valves race shape seal groove, ultra-low temperature valves seat ring cylindrical is provided with screw thread, and rotary valve base snap ring dress makes ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring be close to or recess ultralow temperature spheroid.The double C-type lip seal circle of downstream combination sealing valve seat all can realize excellent sealing in the two directions, it is achieved isolation features.
Described expansion controlling ring-shaped insert is welded on dress formula valve body, and axial circumference is processed several pin-and-holes, stop pin and expansion controlling ring-shaped insert and the assembling of ultra-low temperature valves seat ring, and restriction ultra-low temperature valves seat ring does axially-movable, does not allow to rotate.
Described screwing of valve seat snap ring cylindrical arranges anti-rotation baffle plate in groove, be fixed on dress formula valve body.
Ultralow temperature valve base sealing ring is by external force press-in ultra-low temperature valves race shape seal groove.Ultra-low temperature valves seat ring cylindrical is processed screw thread, makes ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring be close to or recess ultralow temperature spheroid by rotary valve base snap ring.After ultralow temperature spheroid recessed by ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring, ultralow temperature spheroid can be taken out from upper dress formula valve body, it is achieved On line inspection and maintenance.After the realization sealing of ultralow temperature spheroid is close to by ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring, for avoiding the screw thread of ultra-low temperature valves seat ring and valve seat snap ring under the pressure effect of medium to occur to loosen, cause seal failure, anti-rotation baffle plate is set in groove screwing of valve seat snap ring cylindrical, and is fixed on upper dress formula valve body with holding screw.
Described butterfly spring is arranged in the middle of anti-rotation baffle plate and pressure ring, is close to ultralow temperature spheroid for ultralow temperature valve base sealing ring and continues to provide pretightning force.
Described ultralow temperature fire-protection ring is arranged on the cylindrical of dress formula valve body inner bore and ultra-low temperature valves seat ring and compresses with pressure ring, it is achieved fire-proof function.
Described ultralow temperature valve base sealing ring is polytrifluorochloroethylene material, or is tetrafluoroethene material, long-term steady operation in ultralow temperature medium, it is ensured that at ultralow temperature medium without any internal leakage.
This utility model cavity overpressure relief principle: when after the abnormal boosting of the medium remaining in cavity, the active force that the active force that chamber pressure produces at upstream extremity valve seat back active area produces at upstream extremity sealing surface of seat active area less than chamber pressure, upstream extremity combination sealing valve seat departs from ultralow temperature spheroid, and chamber pressure is upstream held and released.Now, the active force that the active force that chamber pressure produces at downstream valve seat back active area produces at downstream sealing surface of seat active area more than chamber pressure, chamber pressure will not downstream end be released.When downstream is overhauled, maintainer and equipment will not be caused damage.
Superior effect of the present utility model is in that:
1) ultralow temperature valve base sealing ring of the present utility model adopts polytrifluorochloroethylene or tetrafluoroethene material, can in ultralow temperature medium long-term steady operation, it is ensured that at ultralow temperature medium without any internal leakage；
2) upstream extremity of this utility model valve seat and valve body seals and adopts single C type lip seal circle, embedded metal energy storage spring provides when without pressure medium and seals required section lotus, and when there being pressure medium, pressure medium puts on the sealing lip of chuck and realizes sealing, pressure is more high, and sealing property is more good；During high pressure operating mode, lip seal circle back-up ring is set, it is prevented that under high pressure, damage lip seal circle after lip seal circle；
3) downstream of this utility model valve seat and valve body seals and adopts double C-type lip seal circle, all can realize excellent sealing in the two directions, it is achieved isolation features；
4), after this utility model realization remains in the abnormal boosting of medium of cavity, chamber pressure is upstream held and is released, and will not downstream end release；When downstream is overhauled, maintainer and equipment will not be caused damage.
4) this utility model makes ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring be close to or recess ultralow temperature spheroid by rotary valve base snap ring, and maintenance is convenient.
Accompanying drawing explanation
The Figure of description constituting the part of the application is used for providing being further appreciated by of the present utility model, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the room temperature ball valve combination seal valve seat schematic diagram of existing double; two cut-off and drainage function；
Fig. 2 is the room temperature ball valve combination seal valve seat schematic diagram of existing double; two isolation and drainage function；
Fig. 3 is high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat schematic diagram of the present utility model；
Number in the figure explanation
1 spheroid；2 opening ring for fixings；
3 room temperature valve seat inserts；4 seat rings；
5 springs；6 fire-protection rings；
7 "O"-ring back-up rings；8 "O"-ring I；
9 "O"-ring II；10 valve bodies；
Formula valve body is filled on 11；12 expansion controlling ring-shaped inserts；
13 stop pins；14 single C type lip seal circles；
15 lip seal circle back-up rings；16 ultra-low temperature valves seat rings；
17 ultralow temperature valve base sealing rings；18 ultralow temperature spheroids；
19 valve seat snap rings；20 anti-rotation baffle plates；
21 butterfly springs；22 holding screws；
23 pressure rings；24 ultralow temperature fire-protection rings；
25 double C-type lip seal circles；A upstream extremity valve seat back active area；
B upstream extremity sealing surface of seat active area；C downstream valve seat back active area；
D downstream sealing surface of seat active area.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that this utility model can be defined by the claims and cover is implemented.
Embodiment of the present utility model is described in detail below in conjunction with Fig. 3.
Illustrate the structural representation of this utility model embodiment.As it is shown on figure 3, this utility model provides a kind of suitable in ultralow-temperature operation conditions, the high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat of favorable sealing property.The left side of Fig. 3 is valve downstream end combination sealing valve seat, including upper dress formula valve body 11, expansion controlling ring-shaped insert 12, stop pin 13, single C type lip seal circle 14, lip seal circle back-up ring 15, ultra-low temperature valves seat ring 16, ultralow temperature valve base sealing ring 17, ultralow temperature spheroid 18, valve seat snap ring 19, anti-rotation baffle plate 20, butterfly spring 21, holding screw 22, pressure ring 23 and ultralow temperature fire-protection ring 24.The right side of Fig. 3 is valve downstream end combination sealing valve seat, including upper dress formula valve body 11, expansion controlling ring-shaped insert 12, stop pin 13, ultra-low temperature valves seat ring 16, ultralow temperature valve base sealing ring 17, ultralow temperature spheroid 18, valve seat snap ring 19, anti-rotation baffle plate 20, butterfly spring 21, holding screw 22, pressure ring 23, ultralow temperature fire-protection ring 24 and double C-type lip seal circle 25.
Upper dress formula valve body 11 after pipeline pressure release can On line inspection and maintenance, make maintenance simplify.
Expansion controlling ring-shaped insert 12 is welded on dress formula valve body 11, processes several pin-and-holes on axial circumference.After stop pin 13 assembles with expansion controlling ring-shaped insert 12 and ultra-low temperature valves seat ring 16, restriction ultra-low temperature valves seat ring 16 does axially-movable, does not allow to rotate.
The chuck embedded metal energy-storaging spring that single C type lip seal circle 14 is polytrifluorochloroethylene or tetrafluoroethene is constituted, and chuck seals under the effect of pressure medium, belongs to self-energized seal.Due to polytrifluorochloroethylene or tetrafluoroethene, to have high chemical stability, resistance to low temperature good, and medium has good anti-swelling, and alternative rubber "O"-ring is used for ultralow-temperature operation conditions.Single C type lip seal circle 14 is arranged on the cylindrical of dress formula valve body 1 endoporus and ultra-low temperature valves seat ring 16, and C type lip is towards valve downstream end.After single C type lip seal circle 14 is installed, embedded metal energy storage spring is in compressive state, the sealing lip of chuck can be forced to be close to and need sealing surfaces, and what when without pressure medium, offer sealing was required cuts lotus.When there being pressure medium, pressure medium puts on the sealing lip of chuck and realizes sealing, and pressure is more high, and sealing property is more good, any deformation of chuck or abrasion, is recompensed by embedded metal energy storage spring.
During high pressure operating mode, the lip seal circle back-up ring 15 arranged after single C type lip seal circle 14, it is prevented that damage single C type lip seal circle 14 under high pressure.
Ultralow temperature valve base sealing ring 17 is by external force press-in ultra-low temperature valves seat ring 16 annular seal groove.Ultra-low temperature valves seat ring 16 cylindrical is processed screw thread, makes ultra-low temperature valves seat ring 16 and ultralow temperature valve base sealing ring 17 be close to or recess ultralow temperature spheroid 18 by rotary valve base snap ring 19.After ultralow temperature spheroid 18 recessed by ultra-low temperature valves seat ring 16 and ultralow temperature valve base sealing ring 17, ultralow temperature spheroid 18 can be taken out from upper dress formula valve body 11, it is achieved On line inspection and maintenance.After ultralow temperature spheroid 18 realization sealing is close to by ultra-low temperature valves seat ring 16 and ultralow temperature valve base sealing ring 17, for avoiding the screw thread of ultra-low temperature valves seat ring 16 and valve seat snap ring 19 under the pressure effect of medium to occur to loosen, cause seal failure, anti-rotation baffle plate 20 is set in groove screwing of valve seat snap ring 19 cylindrical, and is fixed on upper dress formula valve body 11 with holding screw 22.
Ultralow temperature valve base sealing ring 17 adopts polytrifluorochloroethylene or tetrafluoroethene material, can in ultralow temperature medium long-term steady operation, it is ensured that at ultralow temperature medium without any internal leakage.
Butterfly spring 21 is arranged in the middle of anti-rotation baffle plate 20 and pressure ring 23, is close to ultralow temperature spheroid 18 for ultralow temperature valve base sealing ring 17 and continues to provide pretightning force.
Ultralow temperature fire-protection ring 24 is arranged on the cylindrical of dress formula valve body 1 endoporus and ultra-low temperature valves seat ring 16 and compresses with pressure ring 23, it is achieved fire-proof function.
The combination sealing valve seat of downstream and the maximum difference of the combination sealing valve seat of upstream extremity are to adopt double C-type lip seal circle 25 to replace single C type lip seal circle 14 and lip seal circle back-up ring 15.Double C-type lip seal circle 25 all can realize excellent sealing in the two directions, it is achieved isolation features.
Cavity overpressure relief principle: when after the abnormal boosting of the medium remaining in cavity, chamber pressure at the upstream extremity valve seat back active area A active force produced less than chamber pressure at the upstream extremity sealing surface of seat active area B active force produced, upstream extremity combination sealing valve seat departs from ultralow temperature spheroid 18, and chamber pressure is upstream held and released.Now, chamber pressure at the downstream valve seat back active area C active force produced more than chamber pressure at the downstream sealing surface of seat active area D active force produced, chamber pressure will not downstream end be released.When downstream is overhauled, maintainer and equipment will not be caused damage.
The foregoing is only preferred embodiments of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.
Claims (9)
1. a high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat, it is characterized in that: this ball valve combination seal valve seat includes the sealing employing lip seal circle of valve downstream end combination sealing valve seat and valve downstream end combination sealing valve seat, valve downstream end combination sealing valve seat and valve downstream end combination sealing valve seat and upper dress formula valve body.
2. high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 1, it is characterized in that: described valve downstream end combination sealing valve seat, including expansion controlling ring-shaped insert, stop pin, single C type lip seal circle, lip seal circle back-up ring, ultra-low temperature valves seat ring, ultralow temperature valve base sealing ring, valve seat snap ring, anti-rotation baffle plate, butterfly spring, pressure ring and ultralow temperature fire-protection ring；Described single C type lip seal circle is arranged on the cylindrical of dress formula valve body inner bore and ultra-low temperature valves seat ring, single C type lip is towards valve downstream end, after single C type lip seal circle, lip seal circle back-up ring is set, ultralow temperature valve base sealing ring is by external force press-in ultra-low temperature valves race shape seal groove, ultra-low temperature valves seat ring cylindrical is provided with screw thread, and rotary valve base snap ring dress makes ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring be close to or recess ultralow temperature spheroid.
3. high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 2, it is characterised in that: the chuck embedded metal energy-storaging spring that described single C type lip seal circle is polymeric material is constituted.
4. high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 1, it is characterized in that: described valve downstream end combination sealing valve seat, including expansion controlling ring-shaped insert, stop pin, ultra-low temperature valves seat ring, ultralow temperature valve base sealing ring, valve seat snap ring, anti-rotation baffle plate, butterfly spring, pressure ring, ultralow temperature fire-protection ring and double C-type lip seal circle；Described double C-type lip seal circle is arranged on the cylindrical of dress formula valve body inner bore and ultra-low temperature valves seat ring, double C-type lip is towards valve downstream end, ultralow temperature valve base sealing ring is by external force press-in ultra-low temperature valves race shape seal groove, ultra-low temperature valves seat ring cylindrical is provided with screw thread, and rotary valve base snap ring dress makes ultra-low temperature valves seat ring and ultralow temperature valve base sealing ring be close to or recess ultralow temperature spheroid.
5. the high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 2 or 4, it is characterized in that: described expansion controlling ring-shaped insert is welded on dress formula valve body, axial circumference is processed several pin-and-holes, stop pin and expansion controlling ring-shaped insert and the assembling of ultra-low temperature valves seat ring, restriction ultra-low temperature valves seat ring does axially-movable.
6. high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 4, it is characterised in that: described screwing of valve seat snap ring cylindrical arranges anti-rotation baffle plate in groove, be fixed on dress formula valve body.
7. high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 4, it is characterised in that: described butterfly spring is arranged in the middle of anti-rotation baffle plate and pressure ring, is close to ultralow temperature spheroid for ultralow temperature valve base sealing ring and continues to provide pretightning force.
8. high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 4, it is characterised in that: described ultralow temperature fire-protection ring is arranged on the cylindrical of dress formula valve body inner bore and ultra-low temperature valves seat ring and compresses with pressure ring.
9. the high-pressure ultra-low temperature upper-mounting type ball valve combination sealing valve seat according to claim 2 or 4, it is characterised in that: described ultralow temperature valve base sealing ring is polytrifluorochloroethylene material, or is tetrafluoroethene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075434.4U CN205350424U (en) | 2015-12-22 | 2015-12-22 | High pressure ultra -low temperature upper assembling type ball valve composite seal disk seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521075434.4U CN205350424U (en) | 2015-12-22 | 2015-12-22 | High pressure ultra -low temperature upper assembling type ball valve composite seal disk seat |
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| Publication Number | Publication Date |
|---|---|
| CN205350424U true CN205350424U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521075434.4U Active CN205350424U (en) | 2015-12-22 | 2015-12-22 | High pressure ultra -low temperature upper assembling type ball valve composite seal disk seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205350424U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202176A (en) * | 2017-08-02 | 2017-09-26 | 上海凯工阀门股份有限公司 | Formula ultralow temperature fixing ball valve is filled in one kind |
| WO2022133900A1 (en) * | 2020-12-24 | 2022-06-30 | 浙江石化阀门有限公司 | High-pressure large-diameter two-way hard-sealing butterfly valve |
-
2015
- 2015-12-22 CN CN201521075434.4U patent/CN205350424U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202176A (en) * | 2017-08-02 | 2017-09-26 | 上海凯工阀门股份有限公司 | Formula ultralow temperature fixing ball valve is filled in one kind |
| WO2022133900A1 (en) * | 2020-12-24 | 2022-06-30 | 浙江石化阀门有限公司 | High-pressure large-diameter two-way hard-sealing butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170425 Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 138 building 4 Patentee after: SHK VALVE GROUP CO.,LTD. Address before: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee before: SHK VALVE GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181008 Address after: 201416 199 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee after: SHK VALVE GROUP Co.,Ltd. Address before: 201416 4 4 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee before: SHK VALVE GROUP CO.,LTD. |
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Effective date of registration: 20190821 Granted publication date: 20160629 |
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Date of cancellation: 20220821 Granted publication date: 20160629 |
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| PP01 | Preservation of patent right |
Effective date of registration: 20220821 Granted publication date: 20160629 |
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