CN105772455B - Cleaning solution clean method for petroleum pipeline - Google Patents
Cleaning solution clean method for petroleum pipeline Download PDFInfo
- Publication number
- CN105772455B CN105772455B CN201610321013.8A CN201610321013A CN105772455B CN 105772455 B CN105772455 B CN 105772455B CN 201610321013 A CN201610321013 A CN 201610321013A CN 105772455 B CN105772455 B CN 105772455B
- Authority
- CN
- China
- Prior art keywords
- petroleum pipeline
- traction rope
- bracket
- cleaning solution
- bracket cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 55
- 239000003208 petroleum Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000006210 lotion Substances 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 6
- 239000004519 grease Substances 0.000 description 3
- 238000007790 scraping Methods 0.000 description 3
- 244000273618 Sphenoclea zeylanica Species 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007688 edging Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses the cleaning solution clean methods for petroleum pipeline, and it is longer to solve petroleum pipeline, thus longer push-pull rod is needed to be cooperated the problem of capable of just effectively removing substance in pipeline.The present invention includes the easy cleaning device that (1) assembling has the petroleum pipeline of cleaning body and stationary body；(2) there are both ends on petroleum pipeline, be respectively designated as inserting end and extension end, petroleum pipeline is protruded into from inserting end in the free end of the first traction rope and the second traction rope, and stretches out petroleum pipeline from extension end；(3) cleaning body is protruded into petroleum pipeline from inserting end, and stationary body is fixed on to the inserting end of petroleum pipeline；(4) the first traction rope and the second traction rope is pulled to realize the movement of bracket cylinder respectively, the first traction rope and third traction rope are pulled simultaneously, the cleaning solution in cleaning solution putting bag is discharged, the inner tubal wall of petroleum pipeline is cleared up by the collective effect of clean body and cleaning solution in moving process.The present invention has many advantages, such as easy to operate.
Description
Technical field
The present invention relates to a kind of clean methods, and in particular to the cleaning solution clean method for petroleum pipeline.
Background technique
With the continuous development of petroleum industry, the substantial increase of various petroleum note bilge wells, so that various oil pipelines,
Aqueduct demand also increases, and grease pipe tube inner wall after being used for a long time will adhere to there are many impurity such as grease stain, dirt,
It is just more blocked when surveying the dynamics monitoring works such as pressure and oil-field flooding using the test that grease pipe carries out oil well, influences monitoring knot
Fruit, while difficulty is brought to water filling, it needs to re-replace pipeline toward contact sometimes, brings inconvenience to well maintenance.It is right
Petroleum transmission pipeline carries out periodic cleaning maintenance, is conducive to extend pipeline life, improves efficiency of transmission, reduces energy consumption and leakage.
It is a kind of petroleum pipeline cleaning device disclosed in patent CN201520628436.5, including scrubs mechanism, becomes
Diameter mechanism and casing, scrub mechanism and diameter changing mechanism is each provided with motor, and motor is mounted in casing, before casing both ends are respectively
End cap and rear end cap scrub mechanism and are provided with main shaft, and main shaft passes through drive end bearing bracket, and lantern ring is arranged in spindle nose, and lantern ring, which is hinged with, to be washed
Brush connecting rod is scrubbed connecting rod and is hinged with and scrubs；Diameter changing mechanism is provided with screw rod, and threaded shaft is arranged in rear end cap, and threaded shaft is parallel to silk
Sliding block is fixed in bar, feed screw nut and threaded shaft, sliding block, drive end bearing bracket, rear end cap are hinged with variable diameter connecting rod, variable diameter connecting rod hinge
It is connected to variable diameter bar；The main shaft, screw rod are wound on same straight line rotation with electronic.Structure is complicated for this, with high costs；And due to petroleum
Pipeline is longer, thus needs longer push-pull rod to be cooperated just to effectively remove substance in pipeline, thus picks and places, clean behaviour
It is inconvenient.
A kind of cleaning device for petroleum pipeline in patent CN201520074508.6, including successively lead to from front to back
Cross dirt scraping equipment, cleaning device and the edging device being threadedly coupled；Dirt scraping equipment, cleaning device and edging device are cavity knot
Structure and inside communicate connected；Dirt scraping equipment includes the rotary shaft body for cylindrical body, is offered on rotary shaft body through rotary shaft body front and back end
The threaded hole in face further includes the hollow stem being connected on rotary shaft body by threaded hole, is uniformly provided with leak hole on hollow stem；Also wrap
The circular groove being uniformly arranged on rotary shaft body periphery is included, the part between adjacent circular groove constitutes blade.It should
Although structure structure is simple with respect to CN201520628436.5, it is also required to another longer push-pull rod when operating and is matched
Close the purpose that could effectively realize cleaning.
Summary of the invention
The technical problems to be solved by the present invention are: since petroleum pipeline is longer, thus longer push-pull rod is needed to carry out
Cooperation can just effectively remove substance in pipeline, thus pick-and-place, clean operation are inconvenient；It is designed to provide a kind of solution
The cleaning solution clean method for petroleum pipeline of the above problem.
The present invention is achieved through the following technical solutions:
Cleaning solution clean method for petroleum pipeline, comprising:
The first step assembles the easy cleaning device with the petroleum pipeline of cleaning body and stationary body；
Fixed pulley is provided on the stationary body；The cleaning body includes cylindrical bracket cylinder, and setting is being propped up
Clean body on one week side wall of frame cylinder, is arranged in line three-way hole of the bracket cylinder at axial centerline, one end is fixed on
At bracket cylinder top center position, the other end be free end the first traction rope, one end is fixed in bracket cylinder top
At heart point position, the other end is around the second traction rope for extending to bracket cylinder top after fixed pulley from line three-way hole.The fixation
Main body includes fixed pulley, for the bracket of fixed pulley installation, and the limit latch being arranged on bracket；
The bracket cylinder is hollow structure, is additionally provided with rinse liquid outlet on the side wall of the bracket cylinder, the hollow knot
It is additionally provided with the cleaning solution putting bag being connected to rinse liquid outlet in structure, is gone back on the cleaning solution putting bag at adjacent threads lead to the hole site
It is provided with perforation, is additionally provided with pressing plate in the rack tube body, one end third traction rope connected to it is provided on the pressing plate, it should
The third traction rope other end extends line three-way hole after passing through perforation；Perforation corresponding position is provided on the pressing plate leads convenient for second
The string holes that messenger passes through；
Second step has both ends on petroleum pipeline, is respectively designated as inserting end and extension end, the first traction rope and the second traction
Petroleum pipeline is protruded into from inserting end in the free end of rope, and stretches out petroleum pipeline from extension end；
Cleaning body is protruded into petroleum pipeline from inserting end, and stationary body is fixed on petroleum pipeline by third step
Inserting end；
4th step pulls the first traction rope and the second traction rope that can effectively realize the cleaning of petroleum pipeline, simultaneously respectively
Pull the cleaning solution in third traction rope release cleaning solution putting bag.
By the cooperation of the first traction rope, the second traction rope and fixed pulley, bracket cylinder and clean body can be effectively set to follow
The movement of rope and move, and then achieve the purpose that cleaning.And passes through the effect of the rope, effectively convenient for picking and placing, and grasp
Make more convenient.
Further, the bracket is circular ring type, which is installed to the center position of bracket by connecting rod.It is described
The quantity of bracket upper limit latch is 3 or more, and 3 or more limit latches (8) are rounded is evenly spaced on bracket for this.Institute
It states and is additionally provided with bearing bar on bracket.
By the setting of above-mentioned optimization, stationary body is set to be fixed on one end of petroleum pipeline, and then effectively convenient for rope body
Freely operate.
In order to effectively promote bracket cylinder and clean body is stable moves in pipeline, so make clean body everywhere with pipe
Pressure between road inside is almost the same, effectively improves clean effect.First traction rope is fixed on by being stably connected with rope
On bracket cylinder, this is stably connected with rope and is made of three ropes body consistent in length, and one end of this three rope bodies is fixed on rack tube
On body, the other end is fixed as one and connect with the fixing end of the first traction rope.Three ropes body consolidating on bracket cylinder
Pinpoint shaped formation in equilateral triangle.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention is by the cooperation of the first traction rope, the second traction rope and fixed pulley, can effectively make bracket cylinder and clear
Clean body follows the movement of rope and moves, and then achievees the purpose that cleaning；
2, the present invention passes through the effect of the rope, effectively convenient for picking and placing, and operates more convenient；
3, it can effectively promote bracket cylinder in the present invention and clean body is stable moves in pipeline, and then keep clean body each
Pressure between place and pipeline inside is almost the same, effectively improves clean effect.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the schematic diagram of internal structure of cleaning body in the present invention.
Label and corresponding parts title in attached drawing:
1- bracket cylinder, 2- clean body, 3- line three-way hole, the first traction rope of 4-, the second traction rope of 5-, 6- fixed pulley, 7- branch
Frame, 8- limit latch, 9- connecting rod, 10- bearing bar, 11- are stably connected with rope, 12- rinse liquid outlet, and 13- perforates, 14- pressing plate,
15- third traction rope.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As Figure 1-Figure 2, the present invention is used for the cleaning solution clean method of petroleum pipeline, comprising:
The first step assembles the easy cleaning device with the petroleum pipeline of cleaning body and stationary body；
Stationary body described in the present embodiment includes fixed pulley 6, is being propped up for the bracket 7 that fixed pulley 6 is installed, and setting
Limit latch 8 on frame 7.The bracket 7 is circular ring type, which is installed to the center of bracket 7 by connecting rod 9
Place.The quantity of the 7 upper limit latch 8 of bracket is 3 or more, and 3 or more limit latches 8 are rounded is evenly spaced in branch for this
On frame 7.Bearing bar 10 is additionally provided on the bracket 7.
The described cleaning body includes cylindrical bracket cylinder 1, and the clean body on 1 one weeks side walls of bracket cylinder is arranged in
2, line three-way hole 3 of the bracket cylinder 1 at axial centerline is set, and one end is fixed on 1 top center point of bracket cylinder
Set place, the first traction rope 4 that the other end is free end, one end is fixed at 1 bottom center point position of bracket cylinder, the other end around
It crosses after fixed pulley 6 and extends to second traction rope 5 on 1 top of bracket cylinder from line three-way hole 3；
First traction rope 4 is fixed on bracket cylinder 1 by being stably connected with rope 11, this, which is stably connected with rope 11, length
One end of consistent three rope bodies composition, this three rope bodies is fixed on bracket cylinder 1, and the other end is fixed as one and with first
The fixing end of traction rope 4 connects.Fixed point in equilateral triangle shaped formation of the three ropes body on bracket cylinder 1.
The bracket cylinder 1 is hollow structure, is additionally provided with rinse liquid outlet 12 on the side wall of the bracket cylinder 1, in this
The cleaning solution putting bag being connected to rinse liquid outlet 12 is additionally provided in hollow structure, the cleaning solution at neighbouring 3 position of line three-way hole is put
It is additionally provided with perforation 13 on bagging, is additionally provided with pressing plate 14 in the bracket cylinder 1, is provided with one end on the pressing plate 14 and is connected thereto
Third traction rope 15,15 other end of third traction rope pass through perforation 13 after extend line three-way hole 3；Perforate 13 on the pressing plate 14
Corresponding position is provided with the string holes 16 passed through convenient for the second traction rope 5.
Second step has both ends on petroleum pipeline, is respectively designated as inserting end and extension end, the first traction rope and the second traction
Petroleum pipeline is protruded into from inserting end in the free end of rope, and stretches out petroleum pipeline from extension end.
Cleaning body is protruded into petroleum pipeline from inserting end, and stationary body is fixed on petroleum pipeline by third step
Inserting end.
4th step pulls the first traction rope and the second traction rope to realize the movement of bracket cylinder respectively, while pulling first
Traction rope and third traction rope discharge the cleaning solution in cleaning solution putting bag, pass through the clean body and cleaning solution in moving process
Collective effect the inner tubal wall of petroleum pipeline is cleared up.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (7)
1. being used for the cleaning solution clean method of petroleum pipeline characterized by comprising
The first step assembles the easy cleaning device with the petroleum pipeline of cleaning body and stationary body；
Fixed pulley (6) are provided on the stationary body；
The described cleaning body includes cylindrical bracket cylinder (1), the clean body being arranged on (1) one week side wall of bracket cylinder
(2), the line three-way hole (3) at bracket cylinder (1) neighbouring axial centerline is set, and one end is fixed on bracket cylinder (1) top
At center position, the other end be free end the first traction rope (4), one end is fixed on bracket cylinder (1) bottom center point
The place of setting, the other end are around the second traction rope (5) for extending to bracket cylinder (1) top after fixed pulley (6) from line three-way hole (3)；
The bracket cylinder (1) is hollow structure, is additionally provided with rinse liquid outlet (12) on the side wall of the bracket cylinder (1), should
The cleaning solution putting bag being connected to rinse liquid outlet (12) is additionally provided in hollow structure, it is clear at neighbouring line three-way hole (3) position
It is additionally provided with perforation (13) on washing lotion putting bag, is additionally provided with pressing plate (14) in the bracket cylinder (1), is arranged on the pressing plate (14)
There is one end third traction rope (15) connected to it, which passes through perforation (13), and extension outlet is logical afterwards
Hole (3)；Perforation (13) corresponding position is provided with the string holes (16) passed through convenient for the second traction rope (5) on the pressing plate (14)；
Second step has both ends on petroleum pipeline, is respectively designated as inserting end and extension end, the first traction rope and the second traction rope
Petroleum pipeline is protruded into from inserting end in free end, and stretches out petroleum pipeline from extension end；
Cleaning body is protruded into petroleum pipeline from inserting end, and stationary body is fixed on protruding into for petroleum pipeline by third step
End；
4th step pulls the first traction rope and the second traction rope to realize the movement of bracket cylinder respectively, while pulling the first traction
Rope and third traction rope discharge the cleaning solution in cleaning solution putting bag, pass through being total to for clean body in moving process and cleaning solution
Same-action clears up the inner tubal wall of petroleum pipeline.
2. the cleaning solution clean method according to claim 1 for petroleum pipeline, which is characterized in that the stationary body
Including fixed pulley (6), for the bracket (7) of fixed pulley (6) installation, and the limit latch (8) being arranged on bracket (7).
3. the cleaning solution clean method according to claim 2 for petroleum pipeline, which is characterized in that the bracket (7)
For circular ring type, which is installed to the center position of bracket (7) by connecting rod (9).
4. the cleaning solution clean method according to claim 2 for petroleum pipeline, which is characterized in that the bracket (7)
The quantity of upper limit latch (8) is 3 or more, and 3 or more limit latches (8) are rounded is evenly spaced on bracket (7) for this.
5. the cleaning solution clean method according to claim 3 for petroleum pipeline, which is characterized in that the bracket (7)
On be additionally provided with bearing bar (10).
6. the cleaning solution clean method according to claim 2 for petroleum pipeline, which is characterized in that first traction
Rope (4) is fixed on bracket cylinder (1) by being stably connected with rope (11), this, which is stably connected with rope (11), three ropes consistent in length
Body composition, this three rope bodies one end be fixed on bracket cylinder (1), the other end be fixed as one and with the first traction rope (4)
Fixing end connection.
7. the cleaning solution clean method according to claim 6 for petroleum pipeline, which is characterized in that three ropes body
Fixed point shaped formation in equilateral triangle on bracket cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321013.8A CN105772455B (en) | 2016-05-16 | 2016-05-16 | Cleaning solution clean method for petroleum pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610321013.8A CN105772455B (en) | 2016-05-16 | 2016-05-16 | Cleaning solution clean method for petroleum pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105772455A CN105772455A (en) | 2016-07-20 |
| CN105772455B true CN105772455B (en) | 2019-02-26 |
Family
ID=56378843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610321013.8A Expired - Fee Related CN105772455B (en) | 2016-05-16 | 2016-05-16 | Cleaning solution clean method for petroleum pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105772455B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714165B (en) * | 2021-11-01 | 2022-02-08 | 东营浩辰石油技术开发有限公司 | Steel wire rope cleaning equipment for oil extraction pumping unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2052233A (en) * | 1978-05-12 | 1981-01-28 | Currah I | Dispensing apparatus and method |
| CN2169495Y (en) * | 1993-07-08 | 1994-06-22 | 广东省英德县英龙水泥厂 | Horizontal pipeline ash removal device |
| CN101564727A (en) * | 2009-06-01 | 2009-10-28 | 孟祥德 | Dirt rain pipe dredging tube-pulling apparatus |
| CN203955661U (en) * | 2014-07-17 | 2014-11-26 | 咸阳职业技术学院 | For cleaning the oil stain washing brush of petroleum container |
| CN204685603U (en) * | 2015-05-05 | 2015-10-07 | 中石化南京工程有限公司 | A kind of pipe cleaning device |
-
2016
- 2016-05-16 CN CN201610321013.8A patent/CN105772455B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2052233A (en) * | 1978-05-12 | 1981-01-28 | Currah I | Dispensing apparatus and method |
| CN2169495Y (en) * | 1993-07-08 | 1994-06-22 | 广东省英德县英龙水泥厂 | Horizontal pipeline ash removal device |
| CN101564727A (en) * | 2009-06-01 | 2009-10-28 | 孟祥德 | Dirt rain pipe dredging tube-pulling apparatus |
| CN203955661U (en) * | 2014-07-17 | 2014-11-26 | 咸阳职业技术学院 | For cleaning the oil stain washing brush of petroleum container |
| CN204685603U (en) * | 2015-05-05 | 2015-10-07 | 中石化南京工程有限公司 | A kind of pipe cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105772455A (en) | 2016-07-20 |
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Address after: 618000 Fuzhou Road, Deyang, Guanghan, China, the two paragraph of the city of Sichuan Applicant after: SICHUAN XIPU PETROLEUM MATERIALS EQUIPMENT CO.,LTD. Address before: 618300 Fuzhou Road, Deyang, Guanghan, China, the two paragraph of the city of Sichuan Applicant before: SICHUAN XILIN PETROLEUM MATERIAL EQUIPMENT CO.,LTD. |
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Effective date of registration: 20190227 Address after: 610000 No. 10, 2 2, 88 Jiao Zi Road, Chengdu high tech Zone, Sichuan. Patentee after: Sichuan Xingzhi Zhihui Intellectual Property Operation Co.,Ltd. Address before: 618000 Second Section of Fuzhou Road, Guanghan City, Deyang City, Sichuan Province Patentee before: SICHUAN XIPU PETROLEUM MATERIALS EQUIPMENT CO.,LTD. |
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Effective date of registration: 20230426 Address after: No. 147, Qingjiang Middle Road, Qingbaijiang District, Chengdu, Sichuan 610000 (in Chengdu Europe Entrepreneurship Yard) Patentee after: Chengdu Zhirong Zhichuang Intellectual Property Operation Co.,Ltd. Address before: 610000 No. 10, 2 2, 88 Jiao Zi Road, Chengdu high tech Zone, Sichuan. Patentee before: Sichuan Xingzhi Zhihui Intellectual Property Operation Co.,Ltd. |
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