CN217519464U - Fluorine-lined negative pressure resistant compensator - Google Patents
Fluorine-lined negative pressure resistant compensator Download PDFInfo
- Publication number
- CN217519464U CN217519464U CN202220809427.6U CN202220809427U CN217519464U CN 217519464 U CN217519464 U CN 217519464U CN 202220809427 U CN202220809427 U CN 202220809427U CN 217519464 U CN217519464 U CN 217519464U
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- Prior art keywords
- wall
- isostatic pressing
- negative pressure
- screw rod
- fluorine
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- 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.)
- Expired - Fee Related
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- 238000000462 isostatic pressing Methods 0.000 claims abstract description 47
- 230000003139 buffering effect Effects 0.000 claims abstract description 28
- 239000000872 buffer Substances 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000007853 buffer solution Substances 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 10
- 238000001125 extrusion Methods 0.000 abstract description 8
- 229910052731 fluorine Inorganic materials 0.000 abstract description 2
- 239000011737 fluorine Substances 0.000 abstract description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- 230000008602 contraction Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 101100450138 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-2 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
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- Joints Allowing Movement (AREA)
Abstract
The utility model discloses a resistant negative pressure compensator of lining fluorine relates to compensator technical field, including isostatic pressing tetrafluoro pipe, box hat, ring flange, the box hat cup joint in the outer wall of isostatic pressing tetrafluoro pipe, the ring flange is provided with two, two the ring flange cup joint in the outer wall of isostatic pressing tetrafluoro pipe, just the ring flange is located two tip of isostatic pressing tetrafluoro pipe, the outer wall of ring flange is provided with the fixing base. The utility model discloses a set up buffer gear, when isostatic pressing tetrafluoro pipe and box hat thermal expansion, make a screw rod promote the connecting seat along the spacing removal of the inner wall of adapter sleeve to make buffering primer piece atress extrusion deformation, thereby satisfy the demand that the expend with heat produced deformation displacement, when isostatic pressing tetrafluoro pipe and box hat meet the cold shrink, a screw rod drives the connecting seat along the spacing removal of the inner wall of adapter sleeve, and make buffering side primer piece atress extrusion deformation, satisfy the demand that the shrinkage produced deformation displacement.
Description
Technical Field
The utility model relates to a compensator technical field specifically is a resistant negative pressure compensator of lining fluorine.
Background
In daily life, tap water, natural gas, petroleum, cold air supply, heating and the like all adopt pipeline transportation modes, pipelines can expand with heat and contract with cold along with the change of temperature, the pipelines can grow with heat, the pipelines can shorten with the decrease of the temperature of the pipelines, the change can easily cause gaps at the joints of the pipelines to cause leakage, devices which are used for dealing with the phenomenon in the market are called compensators, which are also called expansion joints or expansion joints in a custom way, the effective expansion deformation of working main bodies of the expansion joints or expansion joints is utilized to absorb the size change of pipelines, conduits, containers and the like caused by the expansion with heat and the contraction with cold or compensate the axial, transverse and angular displacement of the pipelines, the conduits, the containers and the like, the compensators are required to be arranged on the pipelines to compensate the thermal expansion of the pipelines due to the thermal expansion or the temperature stress when the heating pipelines are heated, therefore, the stress of the pipe wall and the acting force acting on the valve or the support structure are reduced, the polytetrafluoroethylene compensator is an industrial instrument, is called as a polytetrafluoroethylene corrugated pipe compensator (also called as an expansion joint) and is used for compensating the displacement and installation deviation of expansion with heat and contraction with cold in a pipeline system of a strong corrosive medium, and therefore the vibration of the pipeline system is reduced.
Among the present compensator, the hot extension of compensation pipeline, when cold shortening, set screw can't adjust as required, and the outer wall depressed part of bellows bears the ability of malleation relatively poor, when receiving great from inside to outside positive pressure, often can lead to breaking of compensator to cause the outflow of the inside medium of compensator, influenced normal production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a fluorine-lined negative pressure resistant compensator.
The utility model discloses a realize through following mode:
a fluorine-lined negative pressure resistant compensator comprises an isostatic pressing tetrafluoro pipe, a steel shell and two flange plates, wherein the steel shell is sleeved on the outer wall of the isostatic pressing tetrafluoro pipe, the two flange plates are sleeved on the outer wall of the isostatic pressing tetrafluoro pipe and are positioned at two end parts of the isostatic pressing tetrafluoro pipe, fixed seats are arranged on the outer wall of the flange plates, the fixed seats are symmetrically provided with a plurality of screw rods, and buffer mechanisms are arranged at the end parts of the screw rods; buffer gear includes connecting seat, adapter sleeve, buffering base rubber block, buffering side rubber block, the connecting seat is located one the one end of screw rod, the adapter sleeve is located another the screw rod is close to the one end of connecting seat, buffering base rubber block is located the inside one end of adapter sleeve, buffering side rubber block is located the inside of adapter sleeve is located to be located the both sides of connecting seat.
So, when isostatic pressing tetrafluoro pipe and box hat are heated the thermal expansion, make a screw rod promote the connecting seat along the spacing removal of the inner wall of adapter sleeve to make buffering primer piece atress extrusion deformation, thereby satisfy the demand that the expend with heat produced deformation displacement, when isostatic pressing tetrafluoro pipe and box hat meet the cold contraction, a screw rod drives the connecting seat along the spacing removal of the inner wall of adapter sleeve, and make buffering side primer piece atress extrusion deformation, satisfy the demand that the shrink produced deformation displacement.
Furthermore, the middle parts of the isostatic pressing tetrafluoro pipe and the steel shell are of corrugated structures, and a negative pressure ring is arranged in the inner concave part of the corrugation in the isostatic pressing tetrafluoro pipe.
So, the middle part through isostatic pressing tetrafluoro pipe and steel casing is the ripple structure, and the inside of isostatic pressing tetrafluoro pipe is located the ripple concave part and is equipped with the negative pressure circle, makes the negative pressure circle protect the isostatic pressing tetrafluoro pipe ripple structure concave part, when avoiding external pressure to be greater than internal pressure, the concave part of isostatic pressing tetrafluoro pipe and steel casing inner wall breaks and damages, reinforcing compressive capacity.
Furthermore, the outer wall of the steel shell is sleeved with a limiting ring, the outer wall of the limiting ring is wound with a limiting spring, the limiting ring is provided with a plurality of limiting rings, and the plurality of limiting rings are respectively located in the concave parts of the corrugated structure of the steel shell.
So, the outer wall through the box hat has cup jointed the spacing collar, and the outer wall winding of spacing collar has spacing spring, and the spacing collar is provided with a plurality ofly, and a plurality of spacing collars are located the interior recess of box hat ripple structure respectively, realize that spacing collar and spacing spring protect the interior recess of box hat outer wall, when avoiding inside pressure to be greater than external pressure, the damage is broken to the interior recess of isostatic pressing tetrafluoro pipe and box hat outer wall, reinforcing compressive capacity.
Furthermore, the connecting seat is of a T-shaped structure, and limiting grooves are formed in two sides of the buffer bottom rubber block; the outer wall of connecting seat with the inner wall of adapter sleeve with the inner wall phase-match of spacing groove, the buffering side is glued the piece and is located the spacing groove top.
So, be T type structure through the connecting seat, the both sides of buffering end rubber block are provided with the spacing groove, and the outer wall of connecting seat and the inner wall of adapter sleeve and the inner wall phase-match of spacing groove, buffering side rubber block are located the spacing groove top, realize that the connecting seat is along the spacing removal of adapter sleeve inner wall to make buffering end rubber block or buffering side rubber block atress deformation, satisfy expend with heat and contract with cold's stroke removal needs.
Furthermore, the outer wall of the screw rod is positioned at the top end and the bottom end of the fixed seat and sleeved with nuts, and the inner wall of each nut is matched with the outer wall of the screw rod.
So, the nut has been cup jointed to the top and the bottom that the outer wall through the screw rod is located the fixing base, and the inner wall of nut and the outer wall phase-match of screw rod are fixed in the fixing base inside through the nut with the screw rod.
Furthermore, the isostatic pressing tetrafluoro pipe and the sealing surface of the flange plate are integrally formed by hot melting flanging, and the isostatic pressing tetrafluoro pipe and the steel shell are integrally formed by a pressure die.
So, adopt hot melt turn-ups integrated into one piece through static pressure tetrafluoro pipe and the sealed face of ring flange, isostatic pressure tetrafluoro pipe and steel casing adopt pressure mould integrated into one piece, and the special technology of static pressure tetrafluoro pipe ensures that the compensator is not inhaled flatly by the vacuum under the area temperature negative pressure condition, has solved the compensator and also can be used for taking temperature vacuum piping system.
The beneficial effects of the utility model reside in that: 1. through setting up buffer gear, when isostatic pressing tetrafluoro pipe and box hat are heated the inflation, make a screw rod promote the connecting seat along the spacing removal of the inner wall of adapter sleeve to make buffering primer piece atress extrusion deformation, thereby satisfy the demand that the expend with heat produced deformation displacement, when isostatic pressing tetrafluoro pipe and box hat meet the cold shrink, a screw rod drives the connecting seat along the spacing removal of the inner wall of adapter sleeve, and make buffering side primer piece atress extrusion deformation, satisfy the demand that the shrinkage produced deformation displacement.
2. Through setting up spacing collar and spacing spring, realize that spacing collar and spacing spring protect the interior concave part of box hat outer wall, when avoiding inside pressure to be greater than external pressure, the damage is broken to the interior concave part of isostatic pressing tetrafluoro pipe and box hat outer wall, reinforcing compressive capacity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view of the utility model at a in fig. 1;
FIG. 3 is a sectional view of the structure of the present invention;
fig. 4 is an enlarged schematic view of the utility model at the position B in fig. 3;
fig. 5 is a schematic view of the connection of the buffer mechanism of the present invention.
In the figure: 1. isostatic pressing a tetrafluoro pipe; 2. a steel shell; 3. a flange plate; 4. a fixed seat; 5. a screw; 6. a buffer mechanism; 601. a connecting seat; 602. connecting sleeves; 603. buffering the bottom rubber block; 604. buffering the side rubber block; 7. a negative pressure ring; 8. a limiting ring; 9. and a limiting spring.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1 to 5, in the embodiment of the present invention, a fluorine-lined negative pressure resistant compensator comprises an isostatic pressing tetrafluoro pipe 1, a steel shell 2 and two flange plates 3, wherein the steel shell 2 is sleeved on the outer wall of the isostatic pressing tetrafluoro pipe 1, the two flange plates 3 are sleeved on the outer wall of the isostatic pressing tetrafluoro pipe 1, the flange plates 3 are located at two end portions of the isostatic pressing tetrafluoro pipe 1, the outer wall of the flange plate 3 is provided with a fixing base 4, the fixing base 4 is symmetrically provided with a plurality of, a screw rod 5 is arranged inside the fixing base 4, and the end portion of the screw rod 5 is provided with a buffer mechanism 6; the buffer mechanism 6 comprises a connecting seat 601, a connecting sleeve 602, a buffer bottom rubber block 603 and a buffer side rubber block 604, wherein the connecting seat 601 is located at one end of one screw rod 5, the connecting sleeve 602 is located at one end of the other screw rod 5 close to the connecting seat 601, the buffer bottom rubber block 603 is located at one end of the inside of the connecting sleeve 602, and the buffer side rubber block 604 is located inside the connecting sleeve 602 and located at two sides of the connecting seat 601.
In this embodiment: when isostatic pressing tetrafluoro pipe 1 and steel casing 2 are heated the inflation, make a screw rod 5 promote connecting seat 601 along the spacing removal of the inner wall of adapter sleeve 602, and make buffering end gum piece 603 atress extrusion deformation, thereby satisfy the demand that the thermal expansion produced deformation displacement, when isostatic pressing tetrafluoro pipe 1 and steel casing 2 meet the cold contraction, a screw rod 5 drives connecting seat 601 along the spacing removal of the inner wall of adapter sleeve 602, and make buffering side gum piece 604 atress extrusion deformation, satisfy the demand that the shrinkage produced deformation displacement.
As shown in fig. 3 and 4, the middle parts of the isostatic pressing tetrafluoro-pipe 1 and the steel shell 2 are in a corrugated structure, and a negative pressure ring 7 is arranged in the corrugated concave part inside the isostatic pressing tetrafluoro-pipe 1.
In this embodiment: the middle part of the isostatic pressing tetrafluoro pipe 1 and the steel shell 2 is of a corrugated structure, the negative pressure ring 7 is arranged in a concave part in the corrugation inside the isostatic pressing tetrafluoro pipe 1, the negative pressure ring 7 protects the concave part in the isostatic pressing tetrafluoro pipe 1 in the corrugated structure, and when the external pressure is higher than the internal pressure, the concave parts in the inner walls of the isostatic pressing tetrafluoro pipe 1 and the steel shell 2 are broken and damaged, and the compressive capacity is enhanced.
As shown in fig. 1 and 2, the outer wall of the steel shell 2 is sleeved with a limiting ring 8, the outer wall of the limiting ring 8 is wound with a limiting spring 9, the limiting ring 8 is provided with a plurality of limiting rings 8, and the plurality of limiting rings 8 are respectively located in the concave parts of the corrugated structure of the steel shell 2.
In this embodiment: the outer wall through box hat 2 has cup jointed spacing collar 8, spacing collar 8's outer wall winding has spacing spring 9, spacing collar 8 is provided with a plurality ofly, a plurality of spacing collars 8 are located 2 corrugated structure's of box hat interior concave department respectively, realize that spacing collar 8 and spacing spring 9 protect the interior concave department of 2 outer walls of box hat, when avoiding inside pressure to be greater than external pressure, the damage of bursting of the interior concave department of isostatic pressing tetrafluoro pipe 1 and 2 outer walls of box hat, reinforcing compressive capacity.
As shown in fig. 3 and 5, the connecting seat 601 is a T-shaped structure, the two sides of the buffer bottom rubber block 603 are provided with a limiting groove, the outer wall of the connecting seat 601 is matched with the inner wall of the connecting sleeve 602 and the inner wall of the limiting groove, and the buffer side rubber block 604 is located at the top end of the limiting groove.
In this embodiment: be T type structure through connecting seat 601, the both sides of buffering end rubber block 603 are provided with the spacing groove, the outer wall of connecting seat 601 and the inner wall of adapter sleeve 602 and the inner wall phase-match of spacing groove, buffering side rubber block 604 is located the spacing groove top, realizes that connecting seat 601 moves along adapter sleeve 602 inner wall is spacing to make buffering end rubber block 603 or buffering side rubber block 604 atress deformation, satisfy expend with heat and contract with cold's stroke removal needs.
As shown in fig. 1 and 5, the outer wall of the screw rod 5 is located at the top end and the bottom end of the fixed seat 4, and nuts are sleeved on the outer wall of the screw rod 5, and the inner wall of each nut is matched with the outer wall of the screw rod 5.
In this embodiment: the nut has been cup jointed through the top and the bottom that the outer wall of screw rod 5 is located fixing base 4, and the inner wall of nut and screw rod 5's outer wall phase-match are fixed in inside fixing base 4 with screw rod 5 through the nut.
As shown in fig. 3 and 4, the sealing surface of the isostatic pressing tetrafluoro pipe 1 and the flange 3 is formed integrally by hot melting and flanging, and the isostatic pressing tetrafluoro pipe 1 and the steel shell 2 are formed integrally by a pressure die.
In this embodiment: the static pressure tetrafluoro pipe 1 and the sealing surface of the flange plate 3 are integrally formed through hot melting and flanging, the isostatic pressure tetrafluoro pipe 1 and the steel shell 2 are integrally formed through a pressure die, the special process of the static pressure tetrafluoro pipe 1 ensures that the compensator is not shrunken by vacuum under the condition of negative pressure with temperature, and the problem that the compensator can also be used for a vacuum pipeline system with temperature is solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A fluorine-lined negative pressure resistant compensator comprises an isostatic pressing tetrafluoro pipe (1), a steel shell (2) and a flange plate (3), wherein the steel shell (2) is sleeved on the outer wall of the isostatic pressing tetrafluoro pipe (1), the flange plate (3) is sleeved on the outer wall of the isostatic pressing tetrafluoro pipe (1), and the outer wall of the flange plate (3) is provided with a fixed seat (4), and the fluorine-lined negative pressure resistant compensator is characterized in that a screw rod (5) is arranged inside the fixed seat (4), and the end part of the screw rod (5) is provided with a buffer mechanism (6);
buffer gear (6) are including connecting seat (601), adapter sleeve (602), buffering end rubber block (603), buffering side rubber block (604), connecting seat (601) are located one the one end of screw rod (5), adapter sleeve (602) are located another screw rod (5) are close to the one end of connecting seat (601), buffering end rubber block (603) are located the inside one end of adapter sleeve (602), buffering side rubber block (604) are located the inside of adapter sleeve (602).
2. The fluorine-lined negative pressure-resistant compensator according to claim 1, wherein the middle parts of the isostatic pressing tetrafluoro-tube (1) and the steel shell (2) are of corrugated structures, and a negative pressure ring (7) is arranged inside the isostatic pressing tetrafluoro-tube (1) and positioned in the concave part of the corrugation.
3. The fluorine-lined negative pressure resistant compensator according to claim 2, wherein a limiting ring (8) is sleeved on the outer wall of the steel shell (2), a limiting spring (9) is wound on the outer wall of the limiting ring (8), and the limiting ring (8) is located in an inward concave part of the corrugated structure of the steel shell (2).
4. The fluorine-lined negative pressure-resistant compensator according to claim 1, wherein the connecting seat (601) is of a T-shaped structure, and limiting grooves are arranged on two sides of the buffer base rubber block (603).
5. The fluorine-lined negative pressure-resistant compensator according to claim 4, wherein the outer wall of the connecting seat (601) is matched with the inner wall of the connecting sleeve (602) and the inner wall of the limiting groove, and the buffering side rubber block (604) is positioned at the top end of the limiting groove.
6. The fluorine-lined negative pressure-resistant compensator according to claim 1, wherein nuts are sleeved on the outer wall of the screw rod (5) at the top end and the bottom end of the fixed seat (4), and the inner wall of the nut is matched with the outer wall of the screw rod (5).
7. The fluorine-lined negative pressure resistant compensator according to claim 1, wherein the sealing surface of the isostatic pressing tetrafluoro pipe (1) and the flange plate (3) is formed integrally by hot melting flanging, and the isostatic pressing tetrafluoro pipe (1) and the steel shell (2) are formed integrally by a pressure die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220809427.6U CN217519464U (en) | 2022-04-08 | 2022-04-08 | Fluorine-lined negative pressure resistant compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220809427.6U CN217519464U (en) | 2022-04-08 | 2022-04-08 | Fluorine-lined negative pressure resistant compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217519464U true CN217519464U (en) | 2022-09-30 |
Family
ID=83371059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220809427.6U Expired - Fee Related CN217519464U (en) | 2022-04-08 | 2022-04-08 | Fluorine-lined negative pressure resistant compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217519464U (en) |
-
2022
- 2022-04-08 CN CN202220809427.6U patent/CN217519464U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |