CN103982707A - Laying-in-site concrete-enveloped flexible pipe diversion system - Google Patents
Laying-in-site concrete-enveloped flexible pipe diversion system Download PDFInfo
- Publication number
- CN103982707A CN103982707A CN201410068779.0A CN201410068779A CN103982707A CN 103982707 A CN103982707 A CN 103982707A CN 201410068779 A CN201410068779 A CN 201410068779A CN 103982707 A CN103982707 A CN 103982707A
- Authority
- CN
- China
- Prior art keywords
- concrete
- soft pipe
- flexible pipe
- soft
- pipe
- 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.)
- Granted
Links
- 239000004567 concrete Substances 0.000 claims abstract description 44
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 4
- 230000007480 spreading Effects 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000011109 contamination Methods 0.000 abstract 1
- 238000005336 cracking Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000002699 waste material Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012946 outsourcing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewage (AREA)
Abstract
The invention relates to a laying-in-site concrete-enveloped flexible pipe diversion system which easily and universally bends and is seamlessly communicated to various soft and hard appliances like a household fuel hose, is externally filled with concrete for enveloping to be suitable for a lot of more remote dredging after inflating and positioning of a flexible pipe, has no joints when being laid about 100 meters, is specifically equipped with an inner surface layer to prevent from being corroded and damaged, and is capable of greatly reducing fluid contamination. The system is resistant to frost cracking and general earthquakes, and automatically shrinks and reduces the damage when being subjected to mistaken digging or ultrahigh pressure. The flexible pipe is more durable, and is leakproofly, safely and cheaply communicated with various environmental climate geological terrains. The system is especially beneficial to being communicated to the remote mountain villages to widely help farmers to use water and healthily use gas so as to facilitate deforestation reduction; the concrete surface is also used as a road surface, or helps to keep water and soil. Even the system is matched with the 200,410,077,216.4 patent term to greatly facilitate West-to-East gas transmission or introduction of Russian oil and gas. The flexible pipe is very extremely matched with multiple branch pipes to serve for downtowns, and even the middle section can be randomly connected with branch pipes to be suitable for real transition. After the insulating flexible pipe is filled with water, the flexible pipe is matched with a common resistance meter to obtain the leakage condition by measurement and the flexible pipe is cut to be quickly repaired. The flexible pipe can replace old dilapidated and runaway hard pipes in Guangzhou and other old cities.
Description
Technical field:
The present invention is that a kind of rugged region of suitable leap of leading is removed the remote honest and clean just durable pipeline to hundred Ф 100 to the Ф 400mm latus rectums as for residential area, family feed flow air feed and set up using method.
Background technique:
How again the conventional pipeline of carrying water or gas is many is embedded in underground forming by iron and steel or concrete prefabricated hard tube, and cost is high and construction is difficult, and connecting port easy to leak, not only wastes but also be easily in danger; This pipeline is easily corroded again and is short-lived.For example the gas ductwork that each household hands over 2,000 yuan of installation fees also to need government subsidy to build is wanted in Guangzhou, only used about ten years and heard again and changed, no wonder all see everyday dig more than.If not too concentrated samll cities and towns of the rugged resident family again of distance are rural area even, this pipeline is more difficult laying just so that vast rural area now still difficulty use tap water and make many ills; More difficult extravagant hope pipeline gas or heated.
And hard tube is easily by bursting by freezing or impaired with foundation deformation, one is dug by mistake and has no buffering and gush to let out, and has many accidents just therefore to give birth to.
Though 200410077216.4 patent applications provide the concept that replaces part hard tube with the soft pipe of growing up, yet applicable be embedded in underground a large amount of in small-bore pipe network.
Summary of the invention:
For overcoming the deficiency of above-mentioned pipeline, the invention provides a kind of Lian Yi and manufacture the soft pipe flow guide system of encirclement of now spreading concrete when participating in the cintest that is easily laid in various landform region.
The present invention solves the technical measures that its technical problem adopts:
1, along the circuit of wanting pipe laying, on ground, dig out tunnel and slightly flatten compacting hole wall and the end, hole, more inferior and can contain the concrete of masonry and make to its upper surface more smooth again without spine more at the end, hole paving one deck.
2, with common needn't the be thick or easy autocratic pipe of scratching soft flexibility, drag it along this tunnel, to launch, and Zhan Shen limit, limit entirely holds some waste and old clothing cloth plastic bag films etc. outside it, and to be formed to thick be approximately 1/300 to 1/100 lamination of pipe outer perimeter, this lamination should be adjacent to soft pipe but unlikely its distortion, with bag, protecting after soft pipe, taking advantage of a situation and lie in that above concrete layer having solidified.
3, allow each port of this section of soft pipe all be connected with adjacent members, then manage the soft pipe of inflation as far as possible but few dilatancy.
4, the outer injection compared with high-quality and containing the concrete of pressing the soft pipe of thorn to be out of shape of soft pipe that keeps inflation at this, forms suitable thickness outward to the soft pipe of total incapsulation.After solidifying, add again conventional concrete [can contain masonry], to solidifying, reach the i.e. success of intensity of pressing in enough expansions.
Beneficial effect of the present invention is:
1, low cost easily construction again---be first soft Guan Changlian in hard tube [being iron pipe especially], and all branchiess any paragraphs are as long as rationally choose trend, avoid anxious complications curved, just can entirely exempt from the mouth of pipe of plugging into, and even entirely exempt from hard parts.Only along the ditch soft pipe of cloth of lying.This makes the larger saving again of accessory and operating expenses, can offset the cost of multiplex that common more honest and cleaner concrete completely and have a surplus.If adapted autocracy many take less by cheap glass fibre looping, plastic cement is more tough to be thinly suitable for disposable expansion and to set the soft pipe of no longer displacement and just more saved cost.For example supplied the Ф 400mm of ten thousand family waters to grow the soft pipe of 200 meters, internal layer is made by thick about 0.5mm high-quality plastics, approximately 3 tons of weights only after the sticky glass fibre of outsourcing and at a low price plastic cement binding, have winch or tractor to coordinate its along the line laying to can be jointless in 200 meters of easily carrying, and it is convenient as seen.What diameter was thinner just more easily does.
2, being especially suitable for rural area geology landform complicated and changeable leads safely thin---and be first to hold soft Guan Yin to have and must go along with sb. to guard him by more tough glass fibre, Yi Lingrou pipe dilates that to split the curved hard tube being welded into of the equal iron plate of force rate higher; Outside holding concurrently, there is concrete to surround just stronger.Can give full play to the effective capacity of materials.When running into foundation deformation or being dug by mistake, obviously than hard tube, there is much better than expansion to damage ability.While firmly invaded by external force because of soft pipe again, must contract to keep away and be difficult for breaking; And it is outer adds again the bags such as duds thing waste plastics and protects and can exempt from and concrete layer adhesion [certainly easier by demand, cause adhesion], even if concrete layer is by extremely fracture of earth mover pick [if mistake pick, allowed already pick person's vigilance], this soft pipe is not easily followed concrete fission entirely yet, has telescopic resilience with soft anti-broken.This performance has more obviously been better than hard tube in the wilderness of rugged fluctuating, and soft pipe is not afraid of severe cold bursting by freezing.
3, can reduce the mutual corrosion between pipeline and contained fluid---the few joint of first soft pipe, can make fluid only contact with pipe internal surface to subtract with other object contact to cause complicated bad reaction to greatest extent.Just so again this fluid of the Yi Zaorou pipe ad hoc Cheng Buyu in inner surface layer produces bad reaction, and needn't be subject to tying down of other performance requirement.Realize specially material special use, ensure the purity of institute's deflector, increase again pipeline life and subtract leakage loss.
4, multi-functional---it both can be used for mountain village, also can be used for big city; Both can send benefit stream here, also can drain dirty stream; And be not afraid of general earthquake or floods; Also anti-erosion; Also extremely should develop into thicker going helps the south water to north, western gas east to send or even introduce the Engineering Service of Russia's rock gas.Formed concrete upper surface also can double as the guide rail of road or ridge or even following new-type machinery.
Accompanying drawing explanation:
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 surrounds soft pipe flow guide system and has installed into the water supply of a straight section Shallow-Embedded Under-Ground or gas pipeline along its tubular axis line place vertical guide cross-sectional schematic according to provided by the invention now spreading concrete when participating in the cintest, and Fig. 2 is that the A-A of Fig. 1 is to sectional view.
In figure: 1, carry out source capsule; 2, strangle hoop; 3, soft pipe; 4, base concrete; 5, all concrete; 6, guard beam; 7, upper concrete; 8, backfill; 9, pipe joint; 10, add and twine layer; 11, ground.
Embodiment:
As shown: allow the extraneous pipeline of supplying with user's water of the present invention or gas only expose a bit of and process or mix suitable rigidity and come source capsule 1 as port, be placed on the port of source capsule 1 to form connecting tube form outward the strong equal of head end of soft pipe 3 to be buried underground again, and strangle hoop 2 jails to not leaking.Along setting path, 11 dig out width than more than the wide 5cm of going out of this soft pipe 3 and " U " tee section ditch of dark approximately 1 meter earthward again, again along this bottom of trench paving fill with cheap base concrete 4 that approximately several cm thicks of thick layer needn't high-quality and its upper surface make to without point protruding try one's best smooth; After it solidifies, launch soft pipe 3 and twine layer 10 in its additional even folded close adding of discharge value of but not strangling the soft pipe 3 of change to approximately several millimeters thick as far as possible that twines waste and old clothing cloth plastic bag film and so on; Limit adds wrapped edge and takes advantage of a situation these Guan Fangzhi ditch central authorities are located immediately.
To being filled with suitable water in this soft pipe 3 to sealed against leakage after making soft Guan Quan bulge, just can outside it, spread all concrete 5 of filling with even and fine compared with high-quality again.This paving in filling with, must keep as far as possible soft pipe 3 locate and manage in sectional area try one's best small deformation [this easy-regulating interior water content of soft pipe 3 and pressure fitted successively suitably intermittently the height of all concrete 5 of paving filling reach].Allow the upper surface paving of all concrete 5 to grasping depending on live apart from soft pipe 3 tops approximately 5 to 15cm[] and solidify after, surface is put larger Iron And Steel Scrap or the old building of some Length Ratios " U " shape ditch width and is pulled down into the stronger native stone of piece as guard beam 6 thereon, and pouring upper concrete seven is to entirely covering guard beam 6 and can preventing damaging by pressure again.After solidifying, insert backfill 8 and completed the laying of this section of soft pipe 3 to putting down in 11 of original grounds.Because this soft pipe 3 easily causes, grew hundred meters of rolling, length of run can be any, and this tail end that does not launch still rolling up is very easily clamped to and does not leak again, and discharging amount easily chooses at random deacclimatizes the length of successively excavating pipe laying, to subtract, hinder land operations.
If this ground 11, place needs sclerosis, can estimate " U " shape ditch depth, on relief, concrete seven upper surface is put down in ground 11 and can have been saved backfill 8.Even allow on this concrete seven upper surface just more save trouble as road surface etc.And be less than 20cm for buried soft pipe 3 diameters, guard beam 6 also can have been economized.
When this section (volume) soft pipe 3 is to the greatest extent or when bifurcated answered by pipeline, can allow the tail end of this soft pipe 3 be tightly placed in that prefabricated supporting pipe joint 9 is outer and to strangle hoop 2 firm.This pipe joint 9 can cause similar town gas three form of pipe joint again, and prewired multiple applicable specification and not only have trident, also should have spider or two logical various ways; With just very easily allow soft pipe 3 arbitrarily be communicated with other any recanalization.Adopted the recanalization place of pipe joint 9 or alternate manner equally easily to add to protect with coagulation mount, just for rigid member is wherein easy to dismounting or repacking in the future, should be first in its appearance, has also wrapped to add and twine layer 10 and contact and be advisable with concrete again.One has to add and twines layer and 10 separate, and the concrete of hard parts outsourcing is when the time comes just easily by cutter stripping.And will chisel bag, be fixed in concrete [first watering Waste Sulfuric Acid easier] outside soft pipe 3 and at middle segment, therefrom add inserting again and refute new pipe joint 9 and in the stage casing of this soft pipe 3, reequip to increase and join branch road, must than to take apart hard tube that routine can only install and remove in order reequip again convenient.Visible the present invention is also stronger to the flexibility of adaptation social development resident transition.Until this pipe network as after being communicated with as routine can work.Soft pipe 3 also can be embedded among the concrete structure of other road surface, terrace or building as stated above so as to surrounding, and subtracts the ad hoc concrete consumption of assuring.
This soft pipe 3 easily causes again nonconducting, even if buried, during side's its water-filling leak detection, easily by commonly using resistance measurement instrument etc., predicts leak source; Section again wherein and can Lian Yi to add rapidly pipe-fitting joint 9 and so on and repair.If establish again the intensity of attached increasing people guard beam 6 and the support force of below thereof, can establish thicker soft pipe 3.
For better reaching object of the present invention, should accomplish: allow flexible or flexible long tube put into the hole that ground pick is opened as far as possible, the concrete that allows again this soft pipe be injected into hole under the state of inflation is surrounded, the soft pipe bulging until this concrete around congeals into after integral body, can replace the common underground rigid conduit that is laid on.By soft plastic, cause length to be greater than 30 meters, diameter is no less than the soft pipe 3 that 10cm, wall thickness be greater than 0.2 millimeter and puts into the hole that ground excavates, and by concrete grout, is surrounded under the state of inflation.This soft pipe 3 contains the pressure of fluid than the large 0.5kg/cm of the pressure of extratubal fluid
2after surround being surpassed 24 hours by concrete grout when above, just allow pressure reduction in soft pipe 3.Soft pipe 3 concrete thickness is around greater than 2cm, and the top of this soft pipe 3 be provided with across guard beam 6.
Claims (3)
1. now spread concrete when participating in the cintest and surround soft pipe flow guide system for one kind, allow flexible or flexible long tube put into the hole that ground pick is opened, the concrete that allows again this soft pipe be injected into hole under the state of inflation is surrounded, the soft pipe bulging until this concrete around congeals into after integral body, can replace the common underground rigid conduit that is laid on, it is characterized in that: by soft plastic, cause length to be greater than 30 meters, diameter is no less than the soft pipe (3) that 10cm, wall thickness be greater than 0.2 millimeter and puts into the hole that ground excavates, and by concrete grout, is surrounded under the state of inflation.
2. according to claim 1 now spreading concrete when participating in the cintest surrounded soft pipe flow guide system, it is characterized in that: this soft pipe (3) contains the pressure of fluid than the large 0.5kg/cm of the pressure of extratubal fluid
2after being surpassed 24 hours by concrete grout encirclement when above, just allow the interior pressure of soft pipe (3) reduce.
3. according to claim 1 now spreading concrete when participating in the cintest surrounded soft pipe flow guide system, it is characterized in that: soft pipe (3) concrete thickness is around greater than 2cm, and the top of this soft pipe (3) be provided with across guard beam (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068779.0A CN103982707B (en) | 2014-02-27 | 2014-02-27 | The most now spread concrete and surround soft pipe flow guide system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410068779.0A CN103982707B (en) | 2014-02-27 | 2014-02-27 | The most now spread concrete and surround soft pipe flow guide system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982707A true CN103982707A (en) | 2014-08-13 |
| CN103982707B CN103982707B (en) | 2016-08-17 |
Family
ID=51274793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410068779.0A Active CN103982707B (en) | 2014-02-27 | 2014-02-27 | The most now spread concrete and surround soft pipe flow guide system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103982707B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776278A (en) * | 2015-04-14 | 2015-07-15 | 四川三江港口航道工程建设有限公司 | Pipe section type steel pipe joint and underwater mounting construction method |
| CN107630500A (en) * | 2017-09-27 | 2018-01-26 | 广东景源建设工程有限公司 | A kind of water supply and drainage construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2232174A (en) * | 1989-05-16 | 1990-12-05 | Tanaka Homes Co Ltd | Concrete flooring base |
| CN1706611A (en) * | 2005-05-09 | 2005-12-14 | 许连科 | Concrete member with embedded filling and its production process |
| CN201081328Y (en) * | 2006-12-15 | 2008-07-02 | 北京建筑工程学院 | Energy storage floor heating device made of phase-change material |
| CN101255690A (en) * | 2008-01-16 | 2008-09-03 | 区国雄 | Method for producing covering type driven cast-in-place pile |
-
2014
- 2014-02-27 CN CN201410068779.0A patent/CN103982707B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2232174A (en) * | 1989-05-16 | 1990-12-05 | Tanaka Homes Co Ltd | Concrete flooring base |
| CN1706611A (en) * | 2005-05-09 | 2005-12-14 | 许连科 | Concrete member with embedded filling and its production process |
| CN201081328Y (en) * | 2006-12-15 | 2008-07-02 | 北京建筑工程学院 | Energy storage floor heating device made of phase-change material |
| CN101255690A (en) * | 2008-01-16 | 2008-09-03 | 区国雄 | Method for producing covering type driven cast-in-place pile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776278A (en) * | 2015-04-14 | 2015-07-15 | 四川三江港口航道工程建设有限公司 | Pipe section type steel pipe joint and underwater mounting construction method |
| CN107630500A (en) * | 2017-09-27 | 2018-01-26 | 广东景源建设工程有限公司 | A kind of water supply and drainage construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103982707B (en) | 2016-08-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Digang Inventor before: Luo Xiaohui Inventor before: Luo Fengxi |
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| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171222 Address after: 201900 Baoshan District, Shanghai, Gubei East Road, No. 427, room 2, room 210 Patentee after: Yang Di steel (Shanghai) assembly building Limited by Share Ltd Address before: West River beads Island Garden 510163 Guangzhou city in Guangdong province 18 unit 802 Patentee before: Luo Xiaohui |
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| TR01 | Transfer of patent right |