CN204176053U - Doublely put safety valve - Google Patents
Doublely put safety valve Download PDFInfo
- Publication number
- CN204176053U CN204176053U CN201420576331.5U CN201420576331U CN204176053U CN 204176053 U CN204176053 U CN 204176053U CN 201420576331 U CN201420576331 U CN 201420576331U CN 204176053 U CN204176053 U CN 204176053U
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- Prior art keywords
- valve
- valve disc
- spring
- axle
- disc
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Abstract
The utility model discloses and a kind of doublely put safety valve, comprising: shell, the first valve disc controlling mechanism, the second valve disc controlling mechanism, the first valve disc and the second valve disc; Described shell lower end is socketed on valve nozzle; Described first valve disc controlling mechanism, the second valve disc controlling mechanism, the first valve disc and the second valve disc are arranged on described enclosure; Described first valve disc controlling mechanism is fixedly connected with described first valve disc; Described second valve disc controlling mechanism is fixedly connected with described second valve disc; The one that the utility model provides is double puts safety valve, by the valve disc design of the independent take-off of two cover energy, realizes the independently discharge structure that two discharge capacities are identical, thus improves the reliability of safety valve itself, and avoid the inadequate problem of discharge area simultaneously.
Description
Technical field
The utility model relates to valve production technical field, and particularly one is double puts safety valve.
Background technique
Safety valve is last one barrier of a guarantee Petro-chemical equipment safety, and its significance is self-evident.The reliability of safety valve structure itself is design, manufactures, the basis of handling safety valve.So the reliability improving safety valve structure is very necessary.
At present, various types of safety valve is all made up of one group of processing medium discharging mechanism, the poor reliability of safety valve, and in this case, the safety valve inefficacy caused due to a variety of causes can bring huge loss to whole Petro-chemical device.
Model utility content
Technical problem to be solved in the utility model is to provide that one is structurally double more reliably puts safety valve.
For solving the problems of the technologies described above, the utility model provides a kind of doublely puts safety valve, comprising:
Shell, the first valve disc controlling mechanism, the second valve disc controlling mechanism, the first valve disc and the second valve disc;
Described shell lower end is socketed on valve nozzle;
Described first valve disc controlling mechanism, the second valve disc controlling mechanism, the first valve disc and the second valve disc are arranged on described enclosure;
Described first valve disc controlling mechanism is fixedly connected with described first valve disc;
Described second valve disc controlling mechanism is fixedly connected with described second valve disc;
Described first valve disc and the second valve disc are used in normal conditions, and described first valve disc and the second valve disc cover the top at valve nozzle, stop processing medium to leak;
Described second valve disc controlling mechanism is used for when safety valve inlet pressure equals the release pressure of described second valve disc, and described second valve disc controlling mechanism drives described second valve disc to promote, and described second valve disc is opened and carries out processing medium discharge;
Described first valve disc controlling mechanism is used for when the second valve disc opens failure or discharge area is inadequate, when safety valve inlet pressure continues to increase to the release pressure equaling described first valve disc, described first valve disc controlling mechanism drives described first valve disc to promote, and described first valve disc is opened and carried out processing medium discharge.
Further, described shell comprises:
Bonnet, valve bonnet, valve body and valve seat;
Described bonnet lower end is fixedly connected with described valve bonnet upper end;
Described valve body upper end is fixedly connected with described valve bonnet lower end, and lower end is socketed on described valve nozzle;
Described valve seat is fixedly connected with described valve nozzle, and described valve seat top is provided with first row discharge hole and second row discharge hole, described first valve disc sealing covers on described first row discharge hole, described second valve disc sealing covers on described second row discharge hole, and described first valve disc and the second valve disc are used for stoping fluid to leak in normal conditions.
Further, described first valve disc controlling mechanism comprises:
First axle, the first spring adjusting screw, the first upper spring plate, the first lower spring plate and the first spring;
Described first spring adjusting screw, the first upper spring plate, the first spring and the first lower spring plate are socketed on described first axle successively, are fixedly connected with bottom described first axle with described first valve disc;
Described first spring upper end is fixedly connected with described first upper spring plate, and lower end is fixedly connected with described first lower spring plate;
Described first spring adjusting screw is peripheral to be spirally connected with described valve bonnet, and is positioned on described first upper spring plate, for the setting pressure regulating the reduction length of described first spring to change the first spring, thus changes the release pressure that described first valve disc is opened;
Described first spring is used for when safety valve inlet pressure equals the release pressure of described first valve disc, and described first spring is extruded thus drives described first valve disc to promote by described first axle, and described first valve disc is opened and carries out processing medium discharge.
Further, described second valve disc controlling mechanism comprises:
Second axle, the second spring adjusting screw, the second upper spring plate, the second lower spring plate and the second spring;
Described second spring adjusting screw, the second upper spring plate, the second spring and the second lower spring plate are socketed on described second axle successively, are fixedly connected with bottom described second axle with described second valve disc;
Described second spring upper end is fixedly connected with described second upper spring plate, and lower end is fixedly connected with described second lower spring plate;
Described second spring adjusting screw is peripheral to be spirally connected with described valve bonnet, and is positioned on described second upper spring plate, for regulating the reduction length of the second spring to change the setting pressure of the second spring, thus changes the release pressure that described second valve disc is opened;
Described second spring is used for when safety valve inlet pressure equals the release pressure of described second valve disc controlling mechanism, described second spring is extruded thus drives described second valve disc to promote by described second axle, and described second valve disc is opened and carries out processing medium discharge.
Further, described doublely put safety valve, also comprise:
First positioning work piece, it is peripheral that described first positioning work piece is arranged on described first axle, and be fixed by described valve bonnet and valve body, the first positioning work piece is for ensureing that described first axle keeps vertical when moving up and down.
Further, described doublely put safety valve, also comprise:
Second positioning work piece, it is peripheral that described second positioning work piece is arranged on described second axle, and be fixed by described valve bonnet and valve body, the second positioning work piece is for ensureing that described second axle keeps vertical when moving up and down.
Further, described doublely put safety valve, also comprise:
First positioning block, described first positioning block is arranged on described first axle, and being positioned at described first positioning work piece lower end, described first positioning block is used for positioning with the lifting height of described first locators to described first valve disc in the process promoted at described first valve disc.
Further, described doublely put safety valve, also comprise:
Second positioning block, described second positioning block is arranged on described second axle, and being positioned at described second positioning work piece lower end, described second positioning block is used for positioning with the lifting height of described second locators to described second valve disc in the process promoted at described second valve disc.
Further, described first valve disc semicircular in shape, and bottom is provided with a circle projection, the projection of described first valve disc seals described first row discharge hole for enclosing protrusions match with on described valve seat;
Described second valve disc semicircular in shape, and bottom is provided with a circle projection, the projection of described first valve disc seals described second row discharge hole for enclosing protrusions match with on described valve seat.
Further, described valve body side is provided with relieving device.
The one that the utility model provides is double puts safety valve, and by the improvement of structure, adopt the valve disc design of the independent take-off of two cover energy to realize the identical independently discharge structure of two discharge capacities, the reliability of safety valve itself is significantly improved, and beneficial effect is as follows:
1, double two exhaust outlet discharge amounts of putting safety valve are identical, and discharge action is independent, and be independent of each other, for subsequent use each other, namely when an exhaust outlet can not use, another can come into operation immediately, and without the need to human intervention.
2, actual emission is caused to be greater than amount of calculation if there is fortuitous event, the problem that the elimination discharge area of the double design energy high degree put is inadequate.
Accompanying drawing explanation
The one that Fig. 1 provides for the utility model embodiment is double puts safety valve structure schematic diagram;
Fig. 2 is the plan view of the valve seat in structure shown in Fig. 1.
Fig. 3 is for the double safety valve of putting shown in Fig. 1 is at P < P
sLtime fundamental diagram;
Fig. 4 is for the double safety valve of putting shown in Fig. 1 is at P
sH>=P>=P
sLtime fundamental diagram;
Fig. 5 puts the fundamental diagram of safety valve when the second valve disc is opened unsuccessfully for double shown in Fig. 1;
Fig. 6 is for the double safety valve of putting shown in Fig. 1 is at P>=P
sH, and fundamental diagram when the second valve disc discharge area is inadequate;
Wherein, 1, bonnet, 2, first axle, 3, second axle, 4, first spring adjusting screw, 5, second spring adjusting screw, 6 valve bonnets, 7, second upper spring plate, 8, first upper spring plate, 9, second spring, 10, first spring, 11, relieving device (blocking), 12, first lower spring plate, 13, second lower spring plate, 14, first positioning work piece, 15, valve body, 16, second positioning work piece, 17, second positioning block, 18, first positioning block, 19, second valve disc, 20, first valve disc, 21, valve nozzle, 24, valve seat, A is first row discharge hole, B is second row discharge hole,
P is safety valve inlet pressure, P
sLfor the release pressure of safety valve second valve disc, P
sHfor the release pressure of safety valve first valve disc, P
sL< P
sH.
Embodiment
See Fig. 1, the one that the utility model embodiment provides is double puts safety valve, comprising: shell, the first valve disc 20 controlling mechanism, the second valve disc controlling mechanism, the first valve disc 20 and the second valve disc 19; Shell lower end is socketed on valve nozzle 21; First valve disc controlling mechanism, the second valve disc controlling mechanism, the first valve disc 20 and the second valve disc 19 are arranged on enclosure; First valve disc controlling mechanism is fixedly connected with the first valve disc 20; Second valve disc controlling mechanism is fixedly connected with the second valve disc 19.
In normal conditions, first valve disc 20 and the second valve disc 19 cover on the top of valve nozzle 21, processing medium is stoped to leak, when safety valve inlet pressure equals the release pressure of the second valve disc 19, second valve disc controlling mechanism drives the second valve disc 19 to promote, and the second valve disc 19 is opened and carries out processing medium discharge; When the second valve disc 19 opens failure or discharge area is inadequate, when safety valve inlet pressure continues to increase to the release pressure equaling the first valve disc 20, the first valve disc controlling mechanism drives the first valve disc 20 to promote, and the first valve disc 20 is opened and carried out processing medium discharge.
Wherein, shell comprises: bonnet 1, valve bonnet 6, valve body 15 and valve seat 22; Bonnet 1 lower end is fixedly connected with valve bonnet 6 upper end; Valve body 15 upper end is fixedly connected with valve bonnet 6 lower end, and lower end is socketed on valve nozzle 21, and valve body 15 side is provided with relieving device 11; Valve seat 22 is fixedly connected with valve nozzle 21, and valve seat 22 top is provided with first row discharge hole A and second row discharge hole B, first valve disc 20 sealing covers in first row emptying, second valve disc 19 sealing covers on second row discharge hole B, first valve disc 20 and the second valve disc 19 semicircular in shape, and bottom is provided with a circle projection, encloses protrusions match by projection and valve seat 22 and first row discharge hole A and second row discharge hole B is sealed, stop fluid to leak in normal conditions.
First valve disc controlling mechanism comprises: the first axle 2, first spring adjusting screw 4, first upper spring plate 8, first lower spring plate 12 and the first spring 10; First spring adjusting screw 4, first upper spring plate 8, first spring 10 and the first lower spring plate 12 are socketed on the first axle 2 successively, are fixedly connected with bottom the first axle 2 with the first valve disc 20; First spring 10 upper end is fixedly connected with the first upper spring plate 8, and lower end is fixedly connected with the first lower spring plate 12; First spring adjusting screw 4 is peripheral to be spirally connected with valve bonnet 6, and is positioned on the first upper spring plate 8, for the setting pressure regulating the reduction length of the first spring 10 to change the first spring 10, thus the release pressure that change the first valve disc 20 is opened; When safety valve inlet pressure equals the release pressure of the first valve disc 20, the first spring 10 is extruded thus drives the first valve disc 20 to promote by the first axle 2, and the first valve disc 20 is opened and carries out processing medium discharge.
Second valve disc controlling mechanism comprises: the second axle 3, second spring adjusting screw 5, second upper spring plate 7, second lower spring plate 13 and the second spring 9; Second spring adjusting screw 5, second upper spring plate 7, second spring 9 and the second lower spring plate 13 are socketed on the second axle 3 successively, are fixedly connected with bottom the second axle 3 with the second valve disc 19; Second spring 9 upper end is fixedly connected with the second upper spring plate 7, and lower end is fixedly connected with the second lower spring plate 13; Second spring adjusting screw 5 is peripheral to be spirally connected with valve bonnet 6, and is positioned on the second upper spring plate 7, for the setting pressure regulating the reduction length of the second spring 9 to change the second spring 9, thus the release pressure that change the second valve disc 19 is opened; When safety valve inlet pressure equals the release pressure of the second valve disc controlling mechanism, the second spring 9 is extruded thus drives the second valve disc 19 to promote by the second axle 3, and the second valve disc 19 is opened and carries out processing medium discharge.
What the utility model embodiment provided doublely puts safety valve, also comprise: the first positioning work piece 14, first positioning block 18, second positioning work piece 16 and the second positioning block 17, it is peripheral that first positioning work piece 14 is arranged on the first axle 2, being fixed by valve bonnet 6 and valve body 15, ensureing that the first axle 2 keeps vertical when moving up and down.First positioning block 18 is arranged on the first axle 2, and is positioned at the first positioning work piece 14 lower end, and the first positioning block 18 positions the lifting height of the first valve disc 20 for coordinating with the first positioning work piece 14 in the process of the first valve disc 20 lifting.
It is peripheral that second positioning work piece 16 is arranged on the second axle 3, being fixed, ensureing that the second axle 3 keeps vertical when moving up and down by valve bonnet 6 and valve body 15.Second positioning block 17 is arranged on the second axle 3, and is positioned at the second positioning work piece 16 lower end, and the second positioning block 17 positions the lifting height of the second valve disc 19 for coordinating with the second positioning work piece 16 in the process of the second valve disc 19 lifting.
A kind of double working principle of putting full valve that the utility model embodiment provides is as follows:
Because main spring and auxiliary spring are the spring that two thicknesses are different, the first valve disc 20 can be respectively and the second valve disc 19 arranges different release pressures, and the release pressure P of the second valve disc 19
sLbe less than the first valve disc 20 release pressure P
sH.
P is safety valve inlet pressure, P
sLfor the release pressure of safety valve second valve disc 19, P
sHfor the release pressure of safety valve first valve disc 20, P
sL< P
sH.
See Fig. 3, when safety valve inlet pressure P is less than P
sLtime, the second spring 9 passes to the power F of the second valve disc 19 by the second axle 3
bbe greater than the power that P acts on the second valve disc 19 bottom surface, the first spring 10 passes to the power F of the first valve disc 20 by the first axle 2
abe greater than the power that P acts on the first valve disc 20 bottom surface, this makes safety valve first valve disc 20 and the second valve disc 19 enclosing cover on valve seat 22, stops and leaks and discharge.
See Fig. 4, when safety valve inlet pressure P is more than or equal to P
sLand be less than P
sHtime, because the second spring 9 to pass to the power F of the second valve disc 19 by the second axle 3
bbe less than the power that P acts on the second valve disc 19 bottom surface, the second spring 9 is compressed, and the second valve disc 19 promotes thereupon, provides discharge passage; First spring 10 passes to the power F of the first valve disc 20 by the first axle 2 simultaneously
abe greater than the power that P acts on the first valve disc 20 bottom surface, therefore the second valve disc 19 starts discharge, and the first valve disc 20 is still closed.Second valve disc 19 lifting height is determined by the second positioning work piece 16 and the second positioning block 17 relative position, and when both contact, the second valve disc 19 rises to the highest, and now the amount of releasing of safety valve is determined by the second row discharge hole B on valve seat 22.
See Fig. 5, Fig. 6, when the second valve disc 19 is opened unsuccessfully, or when certain reason causes the second valve disc 19 discharge area inadequate, and P continues to rise, and reaches P
sHtime, the first spring 10 passes to the power F of the first valve disc 20 by the first axle 2
abe less than the power that P acts on the first valve disc 20 bottom surface, the first spring 10 is compressed, and the first valve disc 20 is opened thereupon.First valve disc 20 lifting height, determined by the first positioning work piece 14 and the first positioning block 18 relative position, now the amount of releasing of safety valve is determined by first row discharge hole A on valve seat 22 or the first and second discharge orifice B.
When P declines, when reaching P
sHshi Shouxian closes the first valve disc 20; When P continues to decline, reach P
sLtime, close the second valve disc 19.
This process is the inverse process that safety valve is opened.
Current various types of safety valve is all made up of one group of processing medium discharging mechanism, and the one that the utility model embodiment provides is double puts safety valve, and by the improvement of structure, the reliability of safety valve itself is significantly improved, and beneficial effect is as follows:
1, double two exhaust outlet discharge amounts of putting safety valve are identical, and discharge action is independent, and be independent of each other, for subsequent use each other, namely when an exhaust outlet can not use, another can come into operation immediately, and without the need to human intervention.
2, actual emission is caused to be greater than amount of calculation if there is fortuitous event, the problem that the elimination discharge area of the double design energy high degree put is inadequate.
3, by increasing spring adjusting screw, bonnet 1, inner shaft, outer shaft etc., be all in order to spanner can be added at safety valve top or retaining screw makes valve disc locked.In use, screw or spanner can also be installed additional on the first axle 2 and the second axle 3, the first valve disc 20 and the second valve disc 19 can be fixed on a certain position (locked) like this, make both not change with inlet pressure position.
It should be noted last that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (10)
1. doublely put a safety valve, it is characterized in that, comprising:
Shell, the first valve disc controlling mechanism, the second valve disc controlling mechanism, the first valve disc and the second valve disc;
Described shell lower end is socketed on valve nozzle;
Described first valve disc controlling mechanism, the second valve disc controlling mechanism, the first valve disc and the second valve disc are arranged on described enclosure;
Described first valve disc controlling mechanism is fixedly connected with described first valve disc;
Described second valve disc controlling mechanism is fixedly connected with described second valve disc;
Described first valve disc and the second valve disc are used in normal conditions, and described first valve disc and the second valve disc cover the top at valve nozzle, stop processing medium to leak;
Described second valve disc controlling mechanism is used for when safety valve inlet pressure equals the release pressure of described second valve disc, and described second valve disc controlling mechanism drives described second valve disc to promote, and described second valve disc is opened and carries out processing medium discharge;
Described first valve disc controlling mechanism is used for when the second valve disc opens failure or discharge area is inadequate, when safety valve inlet pressure continues to increase to the release pressure equaling described first valve disc, described first valve disc controlling mechanism drives described first valve disc to promote, and described first valve disc is opened and carried out processing medium discharge.
2. doublely as claimed in claim 1 put safety valve, it is characterized in that, described shell comprises:
Bonnet, valve bonnet, valve body and valve seat;
Described bonnet lower end is fixedly connected with described valve bonnet upper end;
Described valve body upper end is fixedly connected with described valve bonnet lower end, and lower end is socketed on described valve nozzle;
Described valve seat is fixedly connected with described valve nozzle, and described valve seat top is provided with first row discharge hole and second row discharge hole, described first valve disc sealing covers on described first row discharge hole, described second valve disc sealing covers on described second row discharge hole, and described first valve disc and the second valve disc are used for stoping fluid to leak in normal conditions.
3. doublely as claimed in claim 2 put safety valve, it is characterized in that, described first valve disc controlling mechanism comprises:
First axle, the first spring adjusting screw, the first upper spring plate, the first lower spring plate and the first spring;
Described first spring adjusting screw, the first upper spring plate, the first spring and the first lower spring plate are socketed on described first axle successively, are fixedly connected with bottom described first axle with described first valve disc;
Described first spring upper end is fixedly connected with described first upper spring plate, and lower end is fixedly connected with described first lower spring plate;
Described first spring adjusting screw is peripheral to be spirally connected with described valve bonnet, and is positioned on described first upper spring plate, for the setting pressure regulating the reduction length of described first spring to change the first spring, thus changes the release pressure that described first valve disc is opened;
Described first spring is used for when safety valve inlet pressure equals the release pressure of described first valve disc, and described first spring is extruded thus drives described first valve disc to promote by described first axle, and described first valve disc is opened and carries out processing medium discharge.
4. doublely as claimed in claim 2 put safety valve, it is characterized in that, described second valve disc controlling mechanism comprises:
Second axle, the second spring adjusting screw, the second upper spring plate, the second lower spring plate and the second spring;
Described second spring adjusting screw, the second upper spring plate, the second spring and the second lower spring plate are socketed on described second axle successively, are fixedly connected with bottom described second axle with described second valve disc;
Described second spring upper end is fixedly connected with described second upper spring plate, and lower end is fixedly connected with described second lower spring plate;
Described second spring adjusting screw is peripheral to be spirally connected with described valve bonnet, and is positioned on described second upper spring plate, for regulating the reduction length of the second spring to change the setting pressure of the second spring, thus changes the release pressure that described second valve disc is opened;
Described second spring is used for when safety valve inlet pressure equals the release pressure of described second valve disc controlling mechanism, described second spring is extruded thus drives described second valve disc to promote by described second axle, and described second valve disc is opened and carries out processing medium discharge.
5. doublely as claimed in claim 3 put safety valve, it is characterized in that, also comprise:
First positioning work piece, it is peripheral that described first positioning work piece is arranged on described first axle, and be fixed by described valve bonnet and valve body, the first positioning work piece is for ensureing that described first axle keeps vertical when moving up and down.
6. doublely as claimed in claim 4 put safety valve, it is characterized in that, also comprise:
Second positioning work piece, it is peripheral that described second positioning work piece is arranged on described second axle, and be fixed by described valve bonnet and valve body, the second positioning work piece is for ensureing that described second axle keeps vertical when moving up and down.
7. doublely as claimed in claim 5 put safety valve, it is characterized in that, also comprise:
First positioning block, described first positioning block is arranged on described first axle, and being positioned at described first positioning work piece lower end, described first positioning block is used for positioning with the lifting height of described first locators to described first valve disc in the process promoted at described first valve disc.
8. doublely as claimed in claim 6 put safety valve, it is characterized in that, also comprise:
Second positioning block, described second positioning block is arranged on described second axle, and being positioned at described second positioning work piece lower end, described second positioning block is used for positioning with the lifting height of described second locators to described second valve disc in the process promoted at described second valve disc.
9. doublely as claimed in claim 2 put safety valve, it is characterized in that:
Described first valve disc semicircular in shape, and bottom is provided with a circle projection, the projection of described first valve disc seals described first row discharge hole for enclosing protrusions match with on described valve seat;
Described second valve disc semicircular in shape, and bottom is provided with a circle projection, the projection of described first valve disc seals described second row discharge hole for enclosing protrusions match with on described valve seat.
10. doublely as claimed in claim 2 put safety valve, it is characterized in that:
Described valve body side is provided with relieving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576331.5U CN204176053U (en) | 2014-09-30 | 2014-09-30 | Doublely put safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576331.5U CN204176053U (en) | 2014-09-30 | 2014-09-30 | Doublely put safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204176053U true CN204176053U (en) | 2015-02-25 |
Family
ID=52564863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420576331.5U Expired - Fee Related CN204176053U (en) | 2014-09-30 | 2014-09-30 | Doublely put safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204176053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111201088A (en) * | 2017-10-11 | 2020-05-26 | 株式会社利富高 | Fluid discharge mechanism and fluid ejection device |
-
2014
- 2014-09-30 CN CN201420576331.5U patent/CN204176053U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111201088A (en) * | 2017-10-11 | 2020-05-26 | 株式会社利富高 | Fluid discharge mechanism and fluid ejection device |
| CN111201088B (en) * | 2017-10-11 | 2021-07-23 | 株式会社利富高 | Fluid discharge mechanism and fluid ejection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |